blob: c54aae364beebd38833151f97328c3edfe7c2337 [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>
Weston Andros Adamsondb8ac8b2012-02-17 15:20:24 -050047#include <linux/module.h>
48#include <linux/utsname.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070049#include <linux/sunrpc/clnt.h>
Alexandros Batsakis2449ea22009-12-05 13:36:55 -050050#include <linux/sunrpc/msg_prot.h>
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +000051#include <linux/sunrpc/gss_api.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070052#include <linux/nfs.h>
53#include <linux/nfs4.h>
54#include <linux/nfs_fs.h>
55#include <linux/nfs_idmap.h>
Trond Myklebust4ce79712005-06-22 17:16:21 +000056#include "nfs4_fs.h"
Alexandros Batsakis4882ef72009-12-05 13:30:21 -050057#include "internal.h"
Andy Adamsonb1f69b72010-10-20 00:18:03 -040058#include "pnfs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070059
60#define NFSDBG_FACILITY NFSDBG_XDR
61
62/* Mapping from NFS error code to "errno" error code. */
63#define errno_NFSERR_IO EIO
64
David Howells0a8ea432006-08-22 20:06:08 -040065static int nfs4_stat_to_errno(int);
Linus Torvalds1da177e2005-04-16 15:20:36 -070066
67/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
68#ifdef DEBUG
69#define NFS4_MAXTAGLEN 20
70#else
71#define NFS4_MAXTAGLEN 0
72#endif
73
Andy Adamson6c0195a2008-12-23 16:06:15 -050074/* lock,open owner id:
Trond Myklebust9f958ab2007-07-02 13:58:33 -040075 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
Linus Torvalds1da177e2005-04-16 15:20:36 -070076 */
Trond Myklebust95b72eb2012-04-20 19:24:51 -040077#define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
Trond Myklebustd035c362010-12-21 10:45:27 -050078#define lock_owner_id_maxsz (1 + 1 + 4)
Trond Myklebust9104a552007-07-17 21:52:42 -040079#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
Linus Torvalds1da177e2005-04-16 15:20:36 -070080#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
81#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
82#define op_encode_hdr_maxsz (1)
83#define op_decode_hdr_maxsz (2)
Trond Myklebust9104a552007-07-17 21:52:42 -040084#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
85#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
86#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
87#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
Linus Torvalds1da177e2005-04-16 15:20:36 -070088#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
89 (NFS4_FHSIZE >> 2))
90#define decode_putfh_maxsz (op_decode_hdr_maxsz)
91#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
92#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
93#define encode_getfh_maxsz (op_encode_hdr_maxsz)
94#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
95 ((3+NFS4_FHSIZE) >> 2))
Andy Adamsone5012d12011-07-11 17:17:42 -040096#define nfs4_fattr_bitmap_maxsz 4
J. Bruce Fields96928202005-06-22 17:16:22 +000097#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -070098#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
99#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
Trond Myklebustbd625ba2007-07-08 18:38:23 -0400100#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
101#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
J. Bruce Fields96928202005-06-22 17:16:22 +0000102/* This is based on getfattr, which uses the most attributes: */
103#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
Trond Myklebustbd625ba2007-07-08 18:38:23 -0400104 3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz))
J. Bruce Fields96928202005-06-22 17:16:22 +0000105#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
106 nfs4_fattr_value_maxsz)
107#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400108#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
109 1 + 2 + 1 + \
110 nfs4_owner_maxsz + \
111 nfs4_group_maxsz + \
112 4 + 4)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113#define encode_savefh_maxsz (op_encode_hdr_maxsz)
114#define decode_savefh_maxsz (op_decode_hdr_maxsz)
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400115#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
116#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
Fred Isaman2f42b5d2008-03-13 15:26:30 +0200117#define encode_fsinfo_maxsz (encode_getattr_maxsz)
Fred Isamandae100c2011-07-30 20:52:37 -0400118/* The 5 accounts for the PNFS attributes, and assumes that at most three
119 * layout types will be returned.
120 */
121#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
122 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
124#define decode_renew_maxsz (op_decode_hdr_maxsz)
125#define encode_setclientid_maxsz \
126 (op_encode_hdr_maxsz + \
Chuck Levercc38bac2007-12-10 14:56:54 -0500127 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
128 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
129 1 /* sc_prog */ + \
130 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
131 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
132 1) /* sc_cb_ident */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133#define decode_setclientid_maxsz \
134 (op_decode_hdr_maxsz + \
135 2 + \
136 1024) /* large value for CLID_INUSE */
137#define encode_setclientid_confirm_maxsz \
138 (op_encode_hdr_maxsz + \
139 3 + (NFS4_VERIFIER_SIZE >> 2))
140#define decode_setclientid_confirm_maxsz \
141 (op_decode_hdr_maxsz)
Trond Myklebuste6889622007-07-02 13:58:30 -0400142#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
143#define decode_lookup_maxsz (op_decode_hdr_maxsz)
Trond Myklebust2cebf822007-07-02 13:57:28 -0400144#define encode_share_access_maxsz \
145 (2)
Alexandros Batsakis4882ef72009-12-05 13:30:21 -0500146#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
Trond Myklebust2cebf822007-07-02 13:57:28 -0400147#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
148#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
149#define encode_open_maxsz (op_encode_hdr_maxsz + \
150 2 + encode_share_access_maxsz + 2 + \
151 open_owner_id_maxsz + \
152 encode_opentype_maxsz + \
153 encode_claim_null_maxsz)
154#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400155#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400156 decode_ace_maxsz)
157#define decode_change_info_maxsz (5)
158#define decode_open_maxsz (op_decode_hdr_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400159 decode_stateid_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400160 decode_change_info_maxsz + 1 + \
161 nfs4_fattr_bitmap_maxsz + \
162 decode_delegation_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400163#define encode_open_confirm_maxsz \
164 (op_encode_hdr_maxsz + \
165 encode_stateid_maxsz + 1)
166#define decode_open_confirm_maxsz \
167 (op_decode_hdr_maxsz + \
168 decode_stateid_maxsz)
169#define encode_open_downgrade_maxsz \
170 (op_encode_hdr_maxsz + \
171 encode_stateid_maxsz + 1 + \
172 encode_share_access_maxsz)
173#define decode_open_downgrade_maxsz \
174 (op_decode_hdr_maxsz + \
175 decode_stateid_maxsz)
176#define encode_close_maxsz (op_encode_hdr_maxsz + \
177 1 + encode_stateid_maxsz)
178#define decode_close_maxsz (op_decode_hdr_maxsz + \
179 decode_stateid_maxsz)
180#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
181 encode_stateid_maxsz + \
182 encode_attrs_maxsz)
183#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
184 nfs4_fattr_bitmap_maxsz)
185#define encode_read_maxsz (op_encode_hdr_maxsz + \
186 encode_stateid_maxsz + 3)
187#define decode_read_maxsz (op_decode_hdr_maxsz + 2)
188#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
189 2 + encode_verifier_maxsz + 5)
190#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
191 decode_verifier_maxsz)
192#define encode_readlink_maxsz (op_encode_hdr_maxsz)
193#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
194#define encode_write_maxsz (op_encode_hdr_maxsz + \
195 encode_stateid_maxsz + 4)
196#define decode_write_maxsz (op_decode_hdr_maxsz + \
197 2 + decode_verifier_maxsz)
198#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
199#define decode_commit_maxsz (op_decode_hdr_maxsz + \
200 decode_verifier_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201#define encode_remove_maxsz (op_encode_hdr_maxsz + \
202 nfs4_name_maxsz)
Benny Halevy6ce18392009-04-01 09:22:06 -0400203#define decode_remove_maxsz (op_decode_hdr_maxsz + \
204 decode_change_info_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205#define encode_rename_maxsz (op_encode_hdr_maxsz + \
206 2 * nfs4_name_maxsz)
Benny Halevy6ce18392009-04-01 09:22:06 -0400207#define decode_rename_maxsz (op_decode_hdr_maxsz + \
208 decode_change_info_maxsz + \
209 decode_change_info_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210#define encode_link_maxsz (op_encode_hdr_maxsz + \
211 nfs4_name_maxsz)
Benny Halevy6ce18392009-04-01 09:22:06 -0400212#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
Trond Myklebustdaccbde2010-06-25 18:11:43 -0400213#define encode_lockowner_maxsz (7)
Trond Myklebust9104a552007-07-17 21:52:42 -0400214#define encode_lock_maxsz (op_encode_hdr_maxsz + \
215 7 + \
Trond Myklebustdaccbde2010-06-25 18:11:43 -0400216 1 + encode_stateid_maxsz + 1 + \
217 encode_lockowner_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400218#define decode_lock_denied_maxsz \
219 (8 + decode_lockowner_maxsz)
220#define decode_lock_maxsz (op_decode_hdr_maxsz + \
221 decode_lock_denied_maxsz)
Trond Myklebustdaccbde2010-06-25 18:11:43 -0400222#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
223 encode_lockowner_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400224#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
225 decode_lock_denied_maxsz)
226#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
227 encode_stateid_maxsz + \
228 4)
229#define decode_locku_maxsz (op_decode_hdr_maxsz + \
230 decode_stateid_maxsz)
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -0400231#define encode_release_lockowner_maxsz \
232 (op_encode_hdr_maxsz + \
233 encode_lockowner_maxsz)
234#define decode_release_lockowner_maxsz \
235 (op_decode_hdr_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400236#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
237#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
239 1 + nfs4_name_maxsz + \
Chuck Lever94a6d752006-08-22 20:06:23 -0400240 1 + \
J. Bruce Fields96928202005-06-22 17:16:22 +0000241 nfs4_fattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
243#define encode_create_maxsz (op_encode_hdr_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400244 1 + 2 + nfs4_name_maxsz + \
245 encode_attrs_maxsz)
Trond Myklebust2cebf822007-07-02 13:57:28 -0400246#define decode_create_maxsz (op_decode_hdr_maxsz + \
247 decode_change_info_maxsz + \
248 nfs4_fattr_bitmap_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400249#define encode_statfs_maxsz (encode_getattr_maxsz)
250#define decode_statfs_maxsz (decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
252#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400253#define encode_getacl_maxsz (encode_getattr_maxsz)
254#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
255 nfs4_fattr_bitmap_maxsz + 1)
256#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
257 encode_stateid_maxsz + 3)
258#define decode_setacl_maxsz (decode_setattr_maxsz)
Trond Myklebuste6889622007-07-02 13:58:30 -0400259#define encode_fs_locations_maxsz \
260 (encode_getattr_maxsz)
261#define decode_fs_locations_maxsz \
262 (0)
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +0000263#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
Bryan Schumaker1650add2011-06-02 15:07:35 -0400264#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400265
266#if defined(CONFIG_NFS_V4_1)
Andy Adamsonfc931582009-04-01 09:22:31 -0400267#define NFS4_MAX_MACHINE_NAME_LEN (64)
268
Benny Halevy99fe60d2009-04-01 09:22:29 -0400269#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
270 encode_verifier_maxsz + \
271 1 /* co_ownerid.len */ + \
272 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
273 1 /* flags */ + \
274 1 /* spa_how */ + \
275 0 /* SP4_NONE (for now) */ + \
Weston Andros Adamsondb8ac8b2012-02-17 15:20:24 -0500276 1 /* implementation id array of size 1 */ + \
277 1 /* nii_domain */ + \
278 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
279 1 /* nii_name */ + \
280 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
281 3 /* nii_date */)
Benny Halevy99fe60d2009-04-01 09:22:29 -0400282#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
283 2 /* eir_clientid */ + \
284 1 /* eir_sequenceid */ + \
285 1 /* eir_flags */ + \
286 1 /* spr_how */ + \
287 0 /* SP4_NONE (for now) */ + \
288 2 /* eir_server_owner.so_minor_id */ + \
289 /* eir_server_owner.so_major_id<> */ \
290 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
291 /* eir_server_scope<> */ \
292 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
293 1 /* eir_server_impl_id array length */ + \
Weston Andros Adamson7d2ed9a2012-02-17 15:20:26 -0500294 1 /* nii_domain */ + \
295 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
296 1 /* nii_name */ + \
297 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
298 3 /* nii_date */)
Andy Adamsonfc931582009-04-01 09:22:31 -0400299#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
300#define decode_channel_attrs_maxsz (6 + \
301 1 /* ca_rdma_ird.len */ + \
302 1 /* ca_rdma_ird */)
303#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
304 2 /* csa_clientid */ + \
305 1 /* csa_sequence */ + \
306 1 /* csa_flags */ + \
307 encode_channel_attrs_maxsz + \
308 encode_channel_attrs_maxsz + \
309 1 /* csa_cb_program */ + \
310 1 /* csa_sec_parms.len (1) */ + \
311 1 /* cb_secflavor (AUTH_SYS) */ + \
312 1 /* stamp */ + \
313 1 /* machinename.len */ + \
314 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
315 1 /* uid */ + \
316 1 /* gid */ + \
317 1 /* gids.len (0) */)
318#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
319 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
320 1 /* csr_sequence */ + \
321 1 /* csr_flags */ + \
322 decode_channel_attrs_maxsz + \
323 decode_channel_attrs_maxsz)
Andy Adamson0f3e66c2009-04-01 09:22:34 -0400324#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
325#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
Andy Adamsonfc01cea2009-04-01 09:22:36 -0400326#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
327 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
328#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
329 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
Ricardo Labiaga18019752009-12-05 16:08:40 -0500330#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
331#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
Andy Adamson7f11d8d2011-07-30 20:52:35 -0400332#define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \
333 encode_verifier_maxsz)
334#define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \
335 2 /* nfs_cookie4 gdlr_cookie */ + \
336 decode_verifier_maxsz \
337 /* verifier4 gdlr_verifier */ + \
338 1 /* gdlr_deviceid_list count */ + \
339 XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \
340 NFS4_DEVICEID4_SIZE) \
341 /* gdlr_deviceid_list */ + \
342 1 /* bool gdlr_eof */)
Andy Adamsonb1f69b72010-10-20 00:18:03 -0400343#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
344 XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
345#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
346 1 /* layout type */ + \
347 1 /* opaque devaddr4 length */ + \
348 /* devaddr4 payload is read into page */ \
349 1 /* notification bitmap length */ + \
350 1 /* notification bitmap */)
351#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
352 encode_stateid_maxsz)
353#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
354 decode_stateid_maxsz + \
355 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
Andy Adamson863a3c62011-03-23 13:27:54 +0000356#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
357 2 /* offset */ + \
358 2 /* length */ + \
359 1 /* reclaim */ + \
360 encode_stateid_maxsz + \
361 1 /* new offset (true) */ + \
362 2 /* last byte written */ + \
363 1 /* nt_timechanged (false) */ + \
364 1 /* layoutupdate4 layout type */ + \
365 1 /* NULL filelayout layoutupdate4 payload */)
366#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
Benny Halevycbe82602011-05-22 19:52:37 +0300367#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
368 encode_stateid_maxsz + \
369 1 /* FIXME: opaque lrf_body always empty at the moment */)
370#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
371 1 + decode_stateid_maxsz)
Bryan Schumakerfca78d62011-06-02 14:59:07 -0400372#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
373#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
Bryan Schumaker7d974792011-06-02 14:59:08 -0400374#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
375 XDR_QUADLEN(NFS4_STATEID_SIZE))
376#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
Bryan Schumaker9aeda352011-06-02 14:59:09 -0400377#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
378 XDR_QUADLEN(NFS4_STATEID_SIZE))
379#define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1)
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400380#else /* CONFIG_NFS_V4_1 */
381#define encode_sequence_maxsz 0
382#define decode_sequence_maxsz 0
383#endif /* CONFIG_NFS_V4_1 */
384
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
386#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
387#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400388 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400390 encode_read_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400392 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400394 decode_read_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400396 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400398 encode_readlink_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400400 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400402 decode_readlink_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400404 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400406 encode_readdir_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400408 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400410 decode_readdir_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400412 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400414 encode_write_maxsz + \
Trond Myklebust4f9838c2005-10-27 22:12:44 -0400415 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400417 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400419 decode_write_maxsz + \
Trond Myklebust4f9838c2005-10-27 22:12:44 -0400420 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400422 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400424 encode_commit_maxsz + \
Trond Myklebust4f9838c2005-10-27 22:12:44 -0400425 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400427 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400429 decode_commit_maxsz + \
Trond Myklebust4f9838c2005-10-27 22:12:44 -0400430 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400432 encode_sequence_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400433 encode_putfh_maxsz + \
434 encode_savefh_maxsz + \
435 encode_open_maxsz + \
436 encode_getfh_maxsz + \
437 encode_getattr_maxsz + \
438 encode_restorefh_maxsz + \
439 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400441 decode_sequence_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400442 decode_putfh_maxsz + \
443 decode_savefh_maxsz + \
444 decode_open_maxsz + \
445 decode_getfh_maxsz + \
446 decode_getattr_maxsz + \
447 decode_restorefh_maxsz + \
448 decode_getattr_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400449#define NFS4_enc_open_confirm_sz \
450 (compound_encode_hdr_maxsz + \
451 encode_putfh_maxsz + \
452 encode_open_confirm_maxsz)
453#define NFS4_dec_open_confirm_sz \
454 (compound_decode_hdr_maxsz + \
455 decode_putfh_maxsz + \
456 decode_open_confirm_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400458 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 encode_putfh_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400460 encode_open_maxsz + \
461 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400463 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464 decode_putfh_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400465 decode_open_maxsz + \
466 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467#define NFS4_enc_open_downgrade_sz \
468 (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400469 encode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400470 encode_putfh_maxsz + \
471 encode_open_downgrade_maxsz + \
472 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473#define NFS4_dec_open_downgrade_sz \
474 (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400475 decode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400476 decode_putfh_maxsz + \
477 decode_open_downgrade_maxsz + \
478 decode_getattr_maxsz)
479#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400480 encode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400481 encode_putfh_maxsz + \
482 encode_close_maxsz + \
483 encode_getattr_maxsz)
484#define NFS4_dec_close_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_close_maxsz + \
488 decode_getattr_maxsz)
489#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400490 encode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400491 encode_putfh_maxsz + \
492 encode_setattr_maxsz + \
493 encode_getattr_maxsz)
494#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400495 decode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400496 decode_putfh_maxsz + \
497 decode_setattr_maxsz + \
498 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400500 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 encode_putfh_maxsz + \
502 encode_fsinfo_maxsz)
503#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400504 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505 decode_putfh_maxsz + \
506 decode_fsinfo_maxsz)
507#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
508 encode_renew_maxsz)
509#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
510 decode_renew_maxsz)
511#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
512 encode_setclientid_maxsz)
513#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
514 decode_setclientid_maxsz)
515#define NFS4_enc_setclientid_confirm_sz \
516 (compound_encode_hdr_maxsz + \
517 encode_setclientid_confirm_maxsz + \
518 encode_putrootfh_maxsz + \
519 encode_fsinfo_maxsz)
520#define NFS4_dec_setclientid_confirm_sz \
521 (compound_decode_hdr_maxsz + \
522 decode_setclientid_confirm_maxsz + \
523 decode_putrootfh_maxsz + \
524 decode_fsinfo_maxsz)
525#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400526 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400528 encode_lock_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400530 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400532 decode_lock_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400534 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400536 encode_lockt_maxsz)
537#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400538 decode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400539 decode_putfh_maxsz + \
540 decode_lockt_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400542 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400544 encode_locku_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700545#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400546 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400548 decode_locku_maxsz)
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -0400549#define NFS4_enc_release_lockowner_sz \
550 (compound_encode_hdr_maxsz + \
551 encode_lockowner_maxsz)
552#define NFS4_dec_release_lockowner_sz \
553 (compound_decode_hdr_maxsz + \
554 decode_lockowner_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400556 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557 encode_putfh_maxsz + \
Trond Myklebust76b32992007-08-10 17:45:11 -0400558 encode_access_maxsz + \
559 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400561 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562 decode_putfh_maxsz + \
Trond Myklebust76b32992007-08-10 17:45:11 -0400563 decode_access_maxsz + \
564 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400566 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567 encode_putfh_maxsz + \
568 encode_getattr_maxsz)
569#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400570 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571 decode_putfh_maxsz + \
572 decode_getattr_maxsz)
573#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400574 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575 encode_putfh_maxsz + \
576 encode_lookup_maxsz + \
577 encode_getattr_maxsz + \
578 encode_getfh_maxsz)
579#define NFS4_dec_lookup_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 + \
Trond Myklebuste6889622007-07-02 13:58:30 -0400582 decode_lookup_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583 decode_getattr_maxsz + \
584 decode_getfh_maxsz)
585#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400586 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587 encode_putrootfh_maxsz + \
588 encode_getattr_maxsz + \
589 encode_getfh_maxsz)
590#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400591 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592 decode_putrootfh_maxsz + \
593 decode_getattr_maxsz + \
594 decode_getfh_maxsz)
595#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400596 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597 encode_putfh_maxsz + \
Trond Myklebust16e42952005-10-27 22:12:44 -0400598 encode_remove_maxsz + \
599 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400601 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602 decode_putfh_maxsz + \
Benny Halevy6ce18392009-04-01 09:22:06 -0400603 decode_remove_maxsz + \
Trond Myklebust16e42952005-10-27 22:12:44 -0400604 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400606 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607 encode_putfh_maxsz + \
608 encode_savefh_maxsz + \
609 encode_putfh_maxsz + \
Trond Myklebust6caf2c82005-10-27 22:12:43 -0400610 encode_rename_maxsz + \
611 encode_getattr_maxsz + \
612 encode_restorefh_maxsz + \
613 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400615 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616 decode_putfh_maxsz + \
617 decode_savefh_maxsz + \
618 decode_putfh_maxsz + \
Trond Myklebust6caf2c82005-10-27 22:12:43 -0400619 decode_rename_maxsz + \
620 decode_getattr_maxsz + \
621 decode_restorefh_maxsz + \
622 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400624 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625 encode_putfh_maxsz + \
626 encode_savefh_maxsz + \
627 encode_putfh_maxsz + \
Trond Myklebust91ba2ee2005-10-27 22:12:42 -0400628 encode_link_maxsz + \
629 decode_getattr_maxsz + \
630 encode_restorefh_maxsz + \
631 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400633 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634 decode_putfh_maxsz + \
635 decode_savefh_maxsz + \
636 decode_putfh_maxsz + \
Trond Myklebust91ba2ee2005-10-27 22:12:42 -0400637 decode_link_maxsz + \
638 decode_getattr_maxsz + \
639 decode_restorefh_maxsz + \
640 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700641#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400642 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643 encode_putfh_maxsz + \
644 encode_symlink_maxsz + \
645 encode_getattr_maxsz + \
646 encode_getfh_maxsz)
647#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400648 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649 decode_putfh_maxsz + \
650 decode_symlink_maxsz + \
651 decode_getattr_maxsz + \
652 decode_getfh_maxsz)
653#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400654 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655 encode_putfh_maxsz + \
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400656 encode_savefh_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657 encode_create_maxsz + \
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400658 encode_getfh_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659 encode_getattr_maxsz + \
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400660 encode_restorefh_maxsz + \
661 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400663 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664 decode_putfh_maxsz + \
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400665 decode_savefh_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666 decode_create_maxsz + \
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400667 decode_getfh_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668 decode_getattr_maxsz + \
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400669 decode_restorefh_maxsz + \
670 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700671#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400672 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700673 encode_putfh_maxsz + \
674 encode_getattr_maxsz)
675#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400676 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 decode_putfh_maxsz + \
678 decode_getattr_maxsz)
679#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400680 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400682 encode_statfs_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400684 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400686 decode_statfs_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700687#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400688 encode_sequence_maxsz + \
Trond Myklebustab91f262007-02-02 14:47:17 -0800689 encode_putfh_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690 encode_getattr_maxsz)
691#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400692 decode_sequence_maxsz + \
Trond Myklebustab91f262007-02-02 14:47:17 -0800693 decode_putfh_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 decode_getattr_maxsz)
695#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400696 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697 encode_putfh_maxsz + \
Trond Myklebustfa178f22006-01-03 09:55:38 +0100698 encode_delegreturn_maxsz + \
699 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400701 decode_sequence_maxsz + \
Trond Myklebustfa178f22006-01-03 09:55:38 +0100702 decode_delegreturn_maxsz + \
703 decode_getattr_maxsz)
J. Bruce Fields029d1052005-06-22 17:16:22 +0000704#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400705 encode_sequence_maxsz + \
J. Bruce Fields029d1052005-06-22 17:16:22 +0000706 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400707 encode_getacl_maxsz)
J. Bruce Fields029d1052005-06-22 17:16:22 +0000708#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400709 decode_sequence_maxsz + \
J. Bruce Fields029d1052005-06-22 17:16:22 +0000710 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400711 decode_getacl_maxsz)
J. Bruce Fields23ec6962005-06-22 17:16:22 +0000712#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400713 encode_sequence_maxsz + \
J. Bruce Fields23ec6962005-06-22 17:16:22 +0000714 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400715 encode_setacl_maxsz)
J. Bruce Fields23ec6962005-06-22 17:16:22 +0000716#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400717 decode_sequence_maxsz + \
J. Bruce Fields23ec6962005-06-22 17:16:22 +0000718 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400719 decode_setacl_maxsz)
Trond Myklebust683b57b2006-06-09 09:34:22 -0400720#define NFS4_enc_fs_locations_sz \
721 (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400722 encode_sequence_maxsz + \
Trond Myklebust683b57b2006-06-09 09:34:22 -0400723 encode_putfh_maxsz + \
Trond Myklebuste6889622007-07-02 13:58:30 -0400724 encode_lookup_maxsz + \
725 encode_fs_locations_maxsz)
Trond Myklebust683b57b2006-06-09 09:34:22 -0400726#define NFS4_dec_fs_locations_sz \
727 (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400728 decode_sequence_maxsz + \
Trond Myklebust683b57b2006-06-09 09:34:22 -0400729 decode_putfh_maxsz + \
Trond Myklebuste6889622007-07-02 13:58:30 -0400730 decode_lookup_maxsz + \
731 decode_fs_locations_maxsz)
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +0000732#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
733 encode_sequence_maxsz + \
734 encode_putfh_maxsz + \
735 encode_secinfo_maxsz)
736#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
737 decode_sequence_maxsz + \
738 decode_putfh_maxsz + \
739 decode_secinfo_maxsz)
Benny Halevy99fe60d2009-04-01 09:22:29 -0400740#if defined(CONFIG_NFS_V4_1)
741#define NFS4_enc_exchange_id_sz \
742 (compound_encode_hdr_maxsz + \
743 encode_exchange_id_maxsz)
744#define NFS4_dec_exchange_id_sz \
745 (compound_decode_hdr_maxsz + \
746 decode_exchange_id_maxsz)
Andy Adamsonfc931582009-04-01 09:22:31 -0400747#define NFS4_enc_create_session_sz \
748 (compound_encode_hdr_maxsz + \
749 encode_create_session_maxsz)
750#define NFS4_dec_create_session_sz \
751 (compound_decode_hdr_maxsz + \
752 decode_create_session_maxsz)
Andy Adamson0f3e66c2009-04-01 09:22:34 -0400753#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
754 encode_destroy_session_maxsz)
755#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
756 decode_destroy_session_maxsz)
Andy Adamsonfc01cea2009-04-01 09:22:36 -0400757#define NFS4_enc_sequence_sz \
758 (compound_decode_hdr_maxsz + \
759 encode_sequence_maxsz)
760#define NFS4_dec_sequence_sz \
761 (compound_decode_hdr_maxsz + \
762 decode_sequence_maxsz)
Andy Adamson2050f0c2009-04-01 09:22:30 -0400763#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
764 encode_sequence_maxsz + \
765 encode_putrootfh_maxsz + \
766 encode_fsinfo_maxsz)
767#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
768 decode_sequence_maxsz + \
769 decode_putrootfh_maxsz + \
770 decode_fsinfo_maxsz)
Ricardo Labiaga18019752009-12-05 16:08:40 -0500771#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
772 encode_sequence_maxsz + \
773 encode_reclaim_complete_maxsz)
774#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
775 decode_sequence_maxsz + \
776 decode_reclaim_complete_maxsz)
Andy Adamson7f11d8d2011-07-30 20:52:35 -0400777#define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \
778 encode_sequence_maxsz + \
779 encode_putfh_maxsz + \
780 encode_getdevicelist_maxsz)
781#define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \
782 decode_sequence_maxsz + \
783 decode_putfh_maxsz + \
784 decode_getdevicelist_maxsz)
Andy Adamsonb1f69b72010-10-20 00:18:03 -0400785#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
786 encode_sequence_maxsz +\
787 encode_getdeviceinfo_maxsz)
788#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
789 decode_sequence_maxsz + \
790 decode_getdeviceinfo_maxsz)
791#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
792 encode_sequence_maxsz + \
793 encode_putfh_maxsz + \
794 encode_layoutget_maxsz)
795#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
796 decode_sequence_maxsz + \
797 decode_putfh_maxsz + \
798 decode_layoutget_maxsz)
Andy Adamson863a3c62011-03-23 13:27:54 +0000799#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
800 encode_sequence_maxsz +\
801 encode_putfh_maxsz + \
802 encode_layoutcommit_maxsz + \
803 encode_getattr_maxsz)
804#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
805 decode_sequence_maxsz + \
806 decode_putfh_maxsz + \
807 decode_layoutcommit_maxsz + \
808 decode_getattr_maxsz)
Benny Halevycbe82602011-05-22 19:52:37 +0300809#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
810 encode_sequence_maxsz + \
811 encode_putfh_maxsz + \
812 encode_layoutreturn_maxsz)
813#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
814 decode_sequence_maxsz + \
815 decode_putfh_maxsz + \
816 decode_layoutreturn_maxsz)
Bryan Schumakerfca78d62011-06-02 14:59:07 -0400817#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
818 encode_sequence_maxsz + \
819 encode_putrootfh_maxsz +\
820 encode_secinfo_no_name_maxsz)
821#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
822 decode_sequence_maxsz + \
823 decode_putrootfh_maxsz + \
824 decode_secinfo_no_name_maxsz)
Bryan Schumaker7d974792011-06-02 14:59:08 -0400825#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
826 encode_sequence_maxsz + \
827 encode_test_stateid_maxsz)
828#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
829 decode_sequence_maxsz + \
830 decode_test_stateid_maxsz)
Bryan Schumaker9aeda352011-06-02 14:59:09 -0400831#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
832 encode_sequence_maxsz + \
833 encode_free_stateid_maxsz)
834#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
835 decode_sequence_maxsz + \
836 decode_free_stateid_maxsz)
Alexandros Batsakis2449ea22009-12-05 13:36:55 -0500837
838const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
839 compound_encode_hdr_maxsz +
840 encode_sequence_maxsz +
841 encode_putfh_maxsz +
842 encode_getattr_maxsz) *
843 XDR_UNIT);
844
845const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
846 compound_decode_hdr_maxsz +
847 decode_sequence_maxsz +
848 decode_putfh_maxsz) *
849 XDR_UNIT);
Benny Halevy99fe60d2009-04-01 09:22:29 -0400850#endif /* CONFIG_NFS_V4_1 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851
Weston Andros Adamsondb8ac8b2012-02-17 15:20:24 -0500852static unsigned short send_implementation_id = 1;
853
854module_param(send_implementation_id, ushort, 0644);
855MODULE_PARM_DESC(send_implementation_id,
856 "Send implementation ID with NFSv4.1 exchange_id");
857
Trond Myklebustbca79472009-03-11 14:10:26 -0400858static const umode_t nfs_type2fmt[] = {
859 [NF4BAD] = 0,
860 [NF4REG] = S_IFREG,
861 [NF4DIR] = S_IFDIR,
862 [NF4BLK] = S_IFBLK,
863 [NF4CHR] = S_IFCHR,
864 [NF4LNK] = S_IFLNK,
865 [NF4SOCK] = S_IFSOCK,
866 [NF4FIFO] = S_IFIFO,
867 [NF4ATTRDIR] = 0,
868 [NF4NAMEDATTR] = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700869};
870
871struct compound_hdr {
872 int32_t status;
873 uint32_t nops;
Andy Adamsond0179312008-12-23 16:06:17 -0500874 __be32 * nops_p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700875 uint32_t taglen;
876 char * tag;
Benny Halevy0c4e8c12009-04-01 09:22:07 -0400877 uint32_t replen; /* expected reply words */
Benny Halevy66cc0422009-04-01 09:22:10 -0400878 u32 minorversion;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879};
880
Benny Halevy13c65ce2009-08-14 17:19:25 +0300881static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
882{
883 __be32 *p = xdr_reserve_space(xdr, nbytes);
884 BUG_ON(!p);
885 return p;
886}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887
Trond Myklebustcb17e552012-03-04 18:13:56 -0500888static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
889{
890 __be32 *p;
891
892 p = xdr_reserve_space(xdr, len);
893 xdr_encode_opaque_fixed(p, buf, len);
894}
895
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
897{
Al Viro8687b632006-10-19 23:28:48 -0700898 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700899
Trond Myklebust6fdfb0bc2012-03-04 18:13:57 -0500900 p = reserve_space(xdr, 4 + len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700901 xdr_encode_opaque(p, str, len);
902}
903
Trond Myklebust4ade9822012-03-04 18:13:57 -0500904static void encode_uint32(struct xdr_stream *xdr, u32 n)
905{
906 __be32 *p;
907
908 p = reserve_space(xdr, 4);
909 *p = cpu_to_be32(n);
910}
911
Trond Myklebustff2eb682012-03-05 11:40:12 -0500912static void encode_uint64(struct xdr_stream *xdr, u64 n)
913{
914 __be32 *p;
915
916 p = reserve_space(xdr, 8);
917 xdr_encode_hyper(p, n);
918}
919
Trond Myklebust4ade9822012-03-04 18:13:57 -0500920static void encode_nfs4_seqid(struct xdr_stream *xdr,
921 const struct nfs_seqid *seqid)
922{
923 encode_uint32(xdr, seqid->sequence->counter);
924}
925
Benny Halevy0c4e8c12009-04-01 09:22:07 -0400926static void encode_compound_hdr(struct xdr_stream *xdr,
927 struct rpc_rqst *req,
928 struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700929{
Al Viro8687b632006-10-19 23:28:48 -0700930 __be32 *p;
Trond Myklebusta17c2152010-07-31 14:29:08 -0400931 struct rpc_auth *auth = req->rq_cred->cr_auth;
Benny Halevy0c4e8c12009-04-01 09:22:07 -0400932
933 /* initialize running count of expected bytes in reply.
934 * NOTE: the replied tag SHOULD be the same is the one sent,
935 * but this is not required as a MUST for the server to do so. */
936 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700937
Linus Torvalds1da177e2005-04-16 15:20:36 -0700938 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
Trond Myklebust6fdfb0bc2012-03-04 18:13:57 -0500939 encode_string(xdr, hdr->taglen, hdr->tag);
940 p = reserve_space(xdr, 8);
Benny Halevye75bc1c2009-08-14 17:18:54 +0300941 *p++ = cpu_to_be32(hdr->minorversion);
Andy Adamsond0179312008-12-23 16:06:17 -0500942 hdr->nops_p = p;
Benny Halevy34558512009-08-14 17:19:30 +0300943 *p = cpu_to_be32(hdr->nops);
Andy Adamsond0179312008-12-23 16:06:17 -0500944}
945
Trond Myklebustab19b482012-03-04 18:13:57 -0500946static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
947 uint32_t replen,
948 struct compound_hdr *hdr)
949{
950 encode_uint32(xdr, op);
951 hdr->nops++;
952 hdr->replen += replen;
953}
954
Andy Adamsond0179312008-12-23 16:06:17 -0500955static void encode_nops(struct compound_hdr *hdr)
956{
Andy Adamsonfc931582009-04-01 09:22:31 -0400957 BUG_ON(hdr->nops > NFS4_MAX_OPS);
Andy Adamsond0179312008-12-23 16:06:17 -0500958 *hdr->nops_p = htonl(hdr->nops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700959}
960
Trond Myklebustea9d23f2012-03-04 18:13:56 -0500961static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
962{
Trond Myklebust2d2f24a2012-03-04 18:13:57 -0500963 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
Trond Myklebustea9d23f2012-03-04 18:13:56 -0500964}
965
Linus Torvalds1da177e2005-04-16 15:20:36 -0700966static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
967{
Trond Myklebustcb17e552012-03-04 18:13:56 -0500968 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700969}
970
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -0500971static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700972{
973 char owner_name[IDMAP_NAMESZ];
974 char owner_group[IDMAP_NAMESZ];
975 int owner_namelen = 0;
976 int owner_grouplen = 0;
Al Viro8687b632006-10-19 23:28:48 -0700977 __be32 *p;
978 __be32 *q;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700979 int len;
980 uint32_t bmval0 = 0;
981 uint32_t bmval1 = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700982
983 /*
984 * We reserve enough space to write the entire attribute buffer at once.
985 * In the worst-case, this would be
986 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
987 * = 36 bytes, plus any contribution from variable-length fields
J. Bruce Fields23ec6962005-06-22 17:16:22 +0000988 * such as owner/group.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700989 */
990 len = 16;
991
992 /* Sigh */
993 if (iap->ia_valid & ATTR_SIZE)
994 len += 8;
995 if (iap->ia_valid & ATTR_MODE)
996 len += 4;
997 if (iap->ia_valid & ATTR_UID) {
Trond Myklebuste4fd72a2011-02-22 15:44:31 -0800998 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999 if (owner_namelen < 0) {
Chuck Leverfe82a182007-09-11 18:01:10 -04001000 dprintk("nfs: couldn't resolve uid %d to string\n",
1001 iap->ia_uid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001002 /* XXX */
1003 strcpy(owner_name, "nobody");
1004 owner_namelen = sizeof("nobody") - 1;
1005 /* goto out; */
1006 }
1007 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1008 }
1009 if (iap->ia_valid & ATTR_GID) {
Trond Myklebuste4fd72a2011-02-22 15:44:31 -08001010 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001011 if (owner_grouplen < 0) {
Chuck Leverfe82a182007-09-11 18:01:10 -04001012 dprintk("nfs: couldn't resolve gid %d to string\n",
1013 iap->ia_gid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001014 strcpy(owner_group, "nobody");
1015 owner_grouplen = sizeof("nobody") - 1;
1016 /* goto out; */
1017 }
1018 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1019 }
1020 if (iap->ia_valid & ATTR_ATIME_SET)
1021 len += 16;
1022 else if (iap->ia_valid & ATTR_ATIME)
1023 len += 4;
1024 if (iap->ia_valid & ATTR_MTIME_SET)
1025 len += 16;
1026 else if (iap->ia_valid & ATTR_MTIME)
1027 len += 4;
Benny Halevy13c65ce2009-08-14 17:19:25 +03001028 p = reserve_space(xdr, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001029
1030 /*
1031 * We write the bitmap length now, but leave the bitmap and the attribute
1032 * buffer length to be backfilled at the end of this routine.
1033 */
Benny Halevye75bc1c2009-08-14 17:18:54 +03001034 *p++ = cpu_to_be32(2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001035 q = p;
1036 p += 3;
1037
1038 if (iap->ia_valid & ATTR_SIZE) {
1039 bmval0 |= FATTR4_WORD0_SIZE;
Benny Halevyb95be5a2009-08-14 17:19:01 +03001040 p = xdr_encode_hyper(p, iap->ia_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001041 }
1042 if (iap->ia_valid & ATTR_MODE) {
1043 bmval1 |= FATTR4_WORD1_MODE;
Benny Halevye75bc1c2009-08-14 17:18:54 +03001044 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001045 }
1046 if (iap->ia_valid & ATTR_UID) {
1047 bmval1 |= FATTR4_WORD1_OWNER;
Benny Halevy811652b2009-08-14 17:19:34 +03001048 p = xdr_encode_opaque(p, owner_name, owner_namelen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001049 }
1050 if (iap->ia_valid & ATTR_GID) {
1051 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
Benny Halevy811652b2009-08-14 17:19:34 +03001052 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001053 }
1054 if (iap->ia_valid & ATTR_ATIME_SET) {
1055 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
Benny Halevye75bc1c2009-08-14 17:18:54 +03001056 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1057 *p++ = cpu_to_be32(0);
Trond Myklebustd3f6baa2010-06-22 08:52:39 -04001058 *p++ = cpu_to_be32(iap->ia_atime.tv_sec);
1059 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001060 }
1061 else if (iap->ia_valid & ATTR_ATIME) {
1062 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
Benny Halevye75bc1c2009-08-14 17:18:54 +03001063 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001064 }
1065 if (iap->ia_valid & ATTR_MTIME_SET) {
1066 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
Benny Halevye75bc1c2009-08-14 17:18:54 +03001067 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1068 *p++ = cpu_to_be32(0);
1069 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
1070 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001071 }
1072 else if (iap->ia_valid & ATTR_MTIME) {
1073 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
Benny Halevye75bc1c2009-08-14 17:18:54 +03001074 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001075 }
Andy Adamson6c0195a2008-12-23 16:06:15 -05001076
Linus Torvalds1da177e2005-04-16 15:20:36 -07001077 /*
1078 * Now we backfill the bitmap and the attribute buffer length.
1079 */
1080 if (len != ((char *)p - (char *)q) + 4) {
Weston Andros Adamsonf9fd2d92012-01-26 13:32:22 -05001081 printk(KERN_ERR "NFS: Attr length error, %u != %Zu\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07001082 len, ((char *)p - (char *)q) + 4);
1083 BUG();
1084 }
1085 len = (char *)p - (char *)q - 12;
1086 *q++ = htonl(bmval0);
1087 *q++ = htonl(bmval1);
Benny Halevy34558512009-08-14 17:19:30 +03001088 *q = htonl(len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001089
Linus Torvalds1da177e2005-04-16 15:20:36 -07001090/* out: */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001091}
1092
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001093static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001094{
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001095 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1096 encode_uint32(xdr, access);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001097}
1098
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001099static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001100{
Trond Myklebustab19b482012-03-04 18:13:57 -05001101 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
Trond Myklebust4ade9822012-03-04 18:13:57 -05001102 encode_nfs4_seqid(xdr, arg->seqid);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001103 encode_nfs4_stateid(xdr, arg->stateid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001104}
1105
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001106static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001107{
Al Viro8687b632006-10-19 23:28:48 -07001108 __be32 *p;
Andy Adamson6c0195a2008-12-23 16:06:15 -05001109
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001110 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1111 p = reserve_space(xdr, 12);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001112 p = xdr_encode_hyper(p, args->offset);
Benny Halevy34558512009-08-14 17:19:30 +03001113 *p = cpu_to_be32(args->count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001114}
1115
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001116static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001117{
Al Viro8687b632006-10-19 23:28:48 -07001118 __be32 *p;
Andy Adamson6c0195a2008-12-23 16:06:15 -05001119
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001120 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1121 encode_uint32(xdr, create->ftype);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001122
1123 switch (create->ftype) {
1124 case NF4LNK:
Benny Halevy13c65ce2009-08-14 17:19:25 +03001125 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001126 *p = cpu_to_be32(create->u.symlink.len);
Chuck Lever94a6d752006-08-22 20:06:23 -04001127 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001128 break;
1129
1130 case NF4BLK: case NF4CHR:
Benny Halevy13c65ce2009-08-14 17:19:25 +03001131 p = reserve_space(xdr, 8);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001132 *p++ = cpu_to_be32(create->u.device.specdata1);
Benny Halevy34558512009-08-14 17:19:30 +03001133 *p = cpu_to_be32(create->u.device.specdata2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001134 break;
1135
1136 default:
1137 break;
1138 }
1139
Benny Halevy811652b2009-08-14 17:19:34 +03001140 encode_string(xdr, create->name->len, create->name->name);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001141 encode_attrs(xdr, create->attrs, create->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001142}
1143
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001144static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001145{
Andy Adamson05d564f2008-12-23 16:06:15 -05001146 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001147
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001148 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1149 p = reserve_space(xdr, 8);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001150 *p++ = cpu_to_be32(1);
Benny Halevy34558512009-08-14 17:19:30 +03001151 *p = cpu_to_be32(bitmap);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001152}
1153
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001154static 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 -07001155{
Andy Adamson05d564f2008-12-23 16:06:15 -05001156 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001157
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001158 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1159 p = reserve_space(xdr, 12);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001160 *p++ = cpu_to_be32(2);
1161 *p++ = cpu_to_be32(bm0);
Benny Halevy34558512009-08-14 17:19:30 +03001162 *p = cpu_to_be32(bm1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001163}
1164
Fred Isamandae100c2011-07-30 20:52:37 -04001165static void
1166encode_getattr_three(struct xdr_stream *xdr,
1167 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1168 struct compound_hdr *hdr)
1169{
1170 __be32 *p;
1171
Trond Myklebustab19b482012-03-04 18:13:57 -05001172 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
Fred Isamandae100c2011-07-30 20:52:37 -04001173 if (bm2) {
1174 p = reserve_space(xdr, 16);
1175 *p++ = cpu_to_be32(3);
1176 *p++ = cpu_to_be32(bm0);
1177 *p++ = cpu_to_be32(bm1);
1178 *p = cpu_to_be32(bm2);
1179 } else if (bm1) {
1180 p = reserve_space(xdr, 12);
1181 *p++ = cpu_to_be32(2);
1182 *p++ = cpu_to_be32(bm0);
1183 *p = cpu_to_be32(bm1);
1184 } else {
1185 p = reserve_space(xdr, 8);
1186 *p++ = cpu_to_be32(1);
1187 *p = cpu_to_be32(bm0);
1188 }
Fred Isamandae100c2011-07-30 20:52:37 -04001189}
1190
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001191static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001192{
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001193 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1194 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001195}
1196
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001197static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001198{
Fred Isamandae100c2011-07-30 20:52:37 -04001199 encode_getattr_three(xdr,
1200 bitmask[0] & nfs4_fsinfo_bitmap[0],
1201 bitmask[1] & nfs4_fsinfo_bitmap[1],
1202 bitmask[2] & nfs4_fsinfo_bitmap[2],
1203 hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001204}
1205
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001206static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
Manoj Naik830b8e32006-06-09 09:34:25 -04001207{
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001208 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1209 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
Manoj Naik830b8e32006-06-09 09:34:25 -04001210}
1211
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001212static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001213{
Trond Myklebustab19b482012-03-04 18:13:57 -05001214 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001215}
1216
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001217static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001218{
Trond Myklebustab19b482012-03-04 18:13:57 -05001219 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
Trond Myklebust6fdfb0bc2012-03-04 18:13:57 -05001220 encode_string(xdr, name->len, name->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001221}
1222
Trond Myklebust911d1aa2006-01-03 09:55:16 +01001223static inline int nfs4_lock_type(struct file_lock *fl, int block)
1224{
1225 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
1226 return block ? NFS4_READW_LT : NFS4_READ_LT;
1227 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1228}
1229
1230static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1231{
1232 if (fl->fl_end == OFFSET_MAX)
1233 return ~(uint64_t)0;
1234 return fl->fl_end - fl->fl_start + 1;
1235}
1236
Trond Myklebustdaccbde2010-06-25 18:11:43 -04001237static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1238{
1239 __be32 *p;
1240
Trond Myklebustd035c362010-12-21 10:45:27 -05001241 p = reserve_space(xdr, 32);
Trond Myklebustdaccbde2010-06-25 18:11:43 -04001242 p = xdr_encode_hyper(p, lowner->clientid);
Trond Myklebustd035c362010-12-21 10:45:27 -05001243 *p++ = cpu_to_be32(20);
Trond Myklebustdaccbde2010-06-25 18:11:43 -04001244 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
Trond Myklebustd035c362010-12-21 10:45:27 -05001245 *p++ = cpu_to_be32(lowner->s_dev);
Trond Myklebustdaccbde2010-06-25 18:11:43 -04001246 xdr_encode_hyper(p, lowner->id);
1247}
1248
Linus Torvalds1da177e2005-04-16 15:20:36 -07001249/*
1250 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1251 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1252 */
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001253static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001254{
Al Viro8687b632006-10-19 23:28:48 -07001255 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001256
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001257 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1258 p = reserve_space(xdr, 28);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001259 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1260 *p++ = cpu_to_be32(args->reclaim);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001261 p = xdr_encode_hyper(p, args->fl->fl_start);
1262 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
Benny Halevy34558512009-08-14 17:19:30 +03001263 *p = cpu_to_be32(args->new_lock_owner);
Trond Myklebust911d1aa2006-01-03 09:55:16 +01001264 if (args->new_lock_owner){
Trond Myklebust4ade9822012-03-04 18:13:57 -05001265 encode_nfs4_seqid(xdr, args->open_seqid);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001266 encode_nfs4_stateid(xdr, args->open_stateid);
Trond Myklebust4ade9822012-03-04 18:13:57 -05001267 encode_nfs4_seqid(xdr, args->lock_seqid);
Trond Myklebustdaccbde2010-06-25 18:11:43 -04001268 encode_lockowner(xdr, &args->lock_owner);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269 }
1270 else {
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001271 encode_nfs4_stateid(xdr, args->lock_stateid);
Trond Myklebust4ade9822012-03-04 18:13:57 -05001272 encode_nfs4_seqid(xdr, args->lock_seqid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001273 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001274}
1275
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001276static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001277{
Al Viro8687b632006-10-19 23:28:48 -07001278 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001279
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001280 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1281 p = reserve_space(xdr, 20);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001282 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
Benny Halevyb95be5a2009-08-14 17:19:01 +03001283 p = xdr_encode_hyper(p, args->fl->fl_start);
1284 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
Trond Myklebustdaccbde2010-06-25 18:11:43 -04001285 encode_lockowner(xdr, &args->lock_owner);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001286}
1287
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001288static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001289{
Al Viro8687b632006-10-19 23:28:48 -07001290 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001291
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001292 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1293 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
Trond Myklebust4ade9822012-03-04 18:13:57 -05001294 encode_nfs4_seqid(xdr, args->seqid);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001295 encode_nfs4_stateid(xdr, args->stateid);
1296 p = reserve_space(xdr, 16);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001297 p = xdr_encode_hyper(p, args->fl->fl_start);
Benny Halevy34558512009-08-14 17:19:30 +03001298 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001299}
1300
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04001301static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1302{
Trond Myklebustab19b482012-03-04 18:13:57 -05001303 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04001304 encode_lockowner(xdr, lowner);
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04001305}
1306
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001307static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001308{
Trond Myklebustab19b482012-03-04 18:13:57 -05001309 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
Trond Myklebust6fdfb0bc2012-03-04 18:13:57 -05001310 encode_string(xdr, name->len, name->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001311}
1312
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001313static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001314{
Al Viro8687b632006-10-19 23:28:48 -07001315 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001316
Benny Halevy13c65ce2009-08-14 17:19:25 +03001317 p = reserve_space(xdr, 8);
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001318 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
Andy Adamson05d564f2008-12-23 16:06:15 -05001319 case FMODE_READ:
Benny Halevye75bc1c2009-08-14 17:18:54 +03001320 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
Andy Adamson05d564f2008-12-23 16:06:15 -05001321 break;
1322 case FMODE_WRITE:
Benny Halevye75bc1c2009-08-14 17:18:54 +03001323 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
Andy Adamson05d564f2008-12-23 16:06:15 -05001324 break;
1325 case FMODE_READ|FMODE_WRITE:
Benny Halevye75bc1c2009-08-14 17:18:54 +03001326 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
Andy Adamson05d564f2008-12-23 16:06:15 -05001327 break;
1328 default:
Benny Halevye75bc1c2009-08-14 17:18:54 +03001329 *p++ = cpu_to_be32(0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001330 }
Benny Halevy34558512009-08-14 17:19:30 +03001331 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001332}
1333
1334static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1335{
Al Viro8687b632006-10-19 23:28:48 -07001336 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001337 /*
1338 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1339 * owner 4 = 32
1340 */
Trond Myklebust4ade9822012-03-04 18:13:57 -05001341 encode_nfs4_seqid(xdr, arg->seqid);
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001342 encode_share_access(xdr, arg->fmode);
Trond Myklebust95b72eb2012-04-20 19:24:51 -04001343 p = reserve_space(xdr, 36);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001344 p = xdr_encode_hyper(p, arg->clientid);
Trond Myklebust95b72eb2012-04-20 19:24:51 -04001345 *p++ = cpu_to_be32(24);
Benny Halevy93f0cf22009-08-14 17:19:06 +03001346 p = xdr_encode_opaque_fixed(p, "open id:", 8);
Trond Myklebustd035c362010-12-21 10:45:27 -05001347 *p++ = cpu_to_be32(arg->server->s_dev);
Trond Myklebust95b72eb2012-04-20 19:24:51 -04001348 *p++ = cpu_to_be32(arg->id.uniquifier);
1349 xdr_encode_hyper(p, arg->id.create_time);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001350}
1351
1352static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1353{
Al Viro8687b632006-10-19 23:28:48 -07001354 __be32 *p;
Alexandros Batsakis4882ef72009-12-05 13:30:21 -05001355 struct nfs_client *clp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001356
Benny Halevy13c65ce2009-08-14 17:19:25 +03001357 p = reserve_space(xdr, 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001358 switch(arg->open_flags & O_EXCL) {
Andy Adamson05d564f2008-12-23 16:06:15 -05001359 case 0:
Benny Halevy34558512009-08-14 17:19:30 +03001360 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
Andy Adamson05d564f2008-12-23 16:06:15 -05001361 encode_attrs(xdr, arg->u.attrs, arg->server);
1362 break;
1363 default:
Alexandros Batsakis4882ef72009-12-05 13:30:21 -05001364 clp = arg->server->nfs_client;
Trond Myklebusta4432342010-06-16 09:52:27 -04001365 if (clp->cl_mvops->minor_version > 0) {
Alexandros Batsakis4882ef72009-12-05 13:30:21 -05001366 if (nfs4_has_persistent_session(clp)) {
1367 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1368 encode_attrs(xdr, arg->u.attrs, arg->server);
1369 } else {
1370 struct iattr dummy;
1371
1372 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1373 encode_nfs4_verifier(xdr, &arg->u.verifier);
1374 dummy.ia_valid = 0;
1375 encode_attrs(xdr, &dummy, arg->server);
1376 }
1377 } else {
1378 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1379 encode_nfs4_verifier(xdr, &arg->u.verifier);
1380 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001381 }
1382}
1383
1384static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1385{
Al Viro8687b632006-10-19 23:28:48 -07001386 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001387
Benny Halevy13c65ce2009-08-14 17:19:25 +03001388 p = reserve_space(xdr, 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001389 switch (arg->open_flags & O_CREAT) {
Andy Adamson05d564f2008-12-23 16:06:15 -05001390 case 0:
Benny Halevy34558512009-08-14 17:19:30 +03001391 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
Andy Adamson05d564f2008-12-23 16:06:15 -05001392 break;
1393 default:
1394 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
Benny Halevy34558512009-08-14 17:19:30 +03001395 *p = cpu_to_be32(NFS4_OPEN_CREATE);
Andy Adamson05d564f2008-12-23 16:06:15 -05001396 encode_createmode(xdr, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001397 }
1398}
1399
Trond Myklebustbd7bf9d2008-12-23 15:21:53 -05001400static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001401{
Al Viro8687b632006-10-19 23:28:48 -07001402 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001403
Benny Halevy13c65ce2009-08-14 17:19:25 +03001404 p = reserve_space(xdr, 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001405 switch (delegation_type) {
Andy Adamson05d564f2008-12-23 16:06:15 -05001406 case 0:
Benny Halevy34558512009-08-14 17:19:30 +03001407 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
Andy Adamson05d564f2008-12-23 16:06:15 -05001408 break;
1409 case FMODE_READ:
Benny Halevy34558512009-08-14 17:19:30 +03001410 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
Andy Adamson05d564f2008-12-23 16:06:15 -05001411 break;
1412 case FMODE_WRITE|FMODE_READ:
Benny Halevy34558512009-08-14 17:19:30 +03001413 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
Andy Adamson05d564f2008-12-23 16:06:15 -05001414 break;
1415 default:
1416 BUG();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001417 }
1418}
1419
1420static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1421{
Al Viro8687b632006-10-19 23:28:48 -07001422 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001423
Benny Halevy13c65ce2009-08-14 17:19:25 +03001424 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001425 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001426 encode_string(xdr, name->len, name->name);
1427}
1428
Trond Myklebustbd7bf9d2008-12-23 15:21:53 -05001429static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001430{
Al Viro8687b632006-10-19 23:28:48 -07001431 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001432
Benny Halevy13c65ce2009-08-14 17:19:25 +03001433 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001434 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001435 encode_delegation_type(xdr, type);
1436}
1437
1438static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1439{
Al Viro8687b632006-10-19 23:28:48 -07001440 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001441
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001442 p = reserve_space(xdr, 4);
1443 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1444 encode_nfs4_stateid(xdr, stateid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001445 encode_string(xdr, name->len, name->name);
1446}
1447
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001448static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001449{
Trond Myklebustab19b482012-03-04 18:13:57 -05001450 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001451 encode_openhdr(xdr, arg);
1452 encode_opentype(xdr, arg);
1453 switch (arg->claim) {
Andy Adamson05d564f2008-12-23 16:06:15 -05001454 case NFS4_OPEN_CLAIM_NULL:
1455 encode_claim_null(xdr, arg->name);
1456 break;
1457 case NFS4_OPEN_CLAIM_PREVIOUS:
1458 encode_claim_previous(xdr, arg->u.delegation_type);
1459 break;
1460 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1461 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1462 break;
1463 default:
1464 BUG();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001465 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001466}
1467
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001468static 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 -07001469{
Trond Myklebustab19b482012-03-04 18:13:57 -05001470 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001471 encode_nfs4_stateid(xdr, arg->stateid);
Trond Myklebust4ade9822012-03-04 18:13:57 -05001472 encode_nfs4_seqid(xdr, arg->seqid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001473}
1474
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001475static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001476{
Trond Myklebustab19b482012-03-04 18:13:57 -05001477 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001478 encode_nfs4_stateid(xdr, arg->stateid);
Trond Myklebust4ade9822012-03-04 18:13:57 -05001479 encode_nfs4_seqid(xdr, arg->seqid);
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001480 encode_share_access(xdr, arg->fmode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001481}
1482
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001483static void
Andy Adamsond0179312008-12-23 16:06:17 -05001484encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001485{
Trond Myklebustab19b482012-03-04 18:13:57 -05001486 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
Trond Myklebust6fdfb0bc2012-03-04 18:13:57 -05001487 encode_string(xdr, fh->size, fh->data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001488}
1489
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001490static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001491{
Trond Myklebustab19b482012-03-04 18:13:57 -05001492 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001493}
1494
Trond Myklebust4fc87962012-03-08 17:42:01 -05001495static void encode_open_stateid(struct xdr_stream *xdr,
1496 const struct nfs_open_context *ctx,
1497 const struct nfs_lock_context *l_ctx,
1498 fmode_t fmode,
1499 int zero_seqid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001500{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001501 nfs4_stateid stateid;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001502
Linus Torvalds1da177e2005-04-16 15:20:36 -07001503 if (ctx->state != NULL) {
Trond Myklebust4fc87962012-03-08 17:42:01 -05001504 nfs4_select_rw_stateid(&stateid, ctx->state,
1505 fmode, l_ctx->lockowner, l_ctx->pid);
Andy Adamson89d1ea62011-03-01 01:34:09 +00001506 if (zero_seqid)
Trond Myklebust2d2f24a2012-03-04 18:13:57 -05001507 stateid.seqid = 0;
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001508 encode_nfs4_stateid(xdr, &stateid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001509 } else
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001510 encode_nfs4_stateid(xdr, &zero_stateid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001511}
1512
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001513static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001514{
Al Viro8687b632006-10-19 23:28:48 -07001515 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001516
Trond Myklebustab19b482012-03-04 18:13:57 -05001517 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
Trond Myklebustd0b496d2012-03-04 18:13:56 -05001518 encode_open_stateid(xdr, args->context, args->lock_context,
Trond Myklebust4fc87962012-03-08 17:42:01 -05001519 FMODE_READ, hdr->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001520
Benny Halevy13c65ce2009-08-14 17:19:25 +03001521 p = reserve_space(xdr, 12);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001522 p = xdr_encode_hyper(p, args->offset);
Benny Halevy34558512009-08-14 17:19:30 +03001523 *p = cpu_to_be32(args->count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001524}
1525
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001526static 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 -07001527{
Trond Myklebust28331a42011-04-27 13:47:52 -04001528 uint32_t attrs[2] = {
1529 FATTR4_WORD0_RDATTR_ERROR,
1530 FATTR4_WORD1_MOUNTED_ON_FILEID,
1531 };
Trond Myklebust6f7a35b2010-10-24 12:11:42 -04001532 uint32_t dircount = readdir->count >> 1;
Chuck Levercd937102012-03-02 17:14:31 -05001533 __be32 *p, verf[2];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001534
Bryan Schumaker82f2e542010-10-21 16:33:18 -04001535 if (readdir->plus) {
1536 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
Trond Myklebust28331a42011-04-27 13:47:52 -04001537 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
Bryan Schumaker82f2e542010-10-21 16:33:18 -04001538 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1539 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1540 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1541 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
Trond Myklebust6f7a35b2010-10-24 12:11:42 -04001542 dircount >>= 1;
Bryan Schumaker82f2e542010-10-21 16:33:18 -04001543 }
Trond Myklebust28331a42011-04-27 13:47:52 -04001544 /* Use mounted_on_fileid only if the server supports it */
1545 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1546 attrs[0] |= FATTR4_WORD0_FILEID;
Bryan Schumaker82f2e542010-10-21 16:33:18 -04001547
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001548 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
Trond Myklebustff2eb682012-03-05 11:40:12 -05001549 encode_uint64(xdr, readdir->cookie);
Chuck Levercd937102012-03-02 17:14:31 -05001550 encode_nfs4_verifier(xdr, &readdir->verifier);
1551 p = reserve_space(xdr, 20);
Trond Myklebust6f7a35b2010-10-24 12:11:42 -04001552 *p++ = cpu_to_be32(dircount);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001553 *p++ = cpu_to_be32(readdir->count);
1554 *p++ = cpu_to_be32(2);
Bryan Schumaker82f2e542010-10-21 16:33:18 -04001555
Benny Halevye75bc1c2009-08-14 17:18:54 +03001556 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
Benny Halevy34558512009-08-14 17:19:30 +03001557 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
Chuck Levercd937102012-03-02 17:14:31 -05001558 memcpy(verf, readdir->verifier.data, sizeof(verf));
Fred Isaman44109242008-04-02 15:21:15 +03001559 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1560 __func__,
Trond Myklebusteadf4592005-06-22 17:16:39 +00001561 (unsigned long long)readdir->cookie,
Chuck Levercd937102012-03-02 17:14:31 -05001562 verf[0], verf[1],
Trond Myklebusteadf4592005-06-22 17:16:39 +00001563 attrs[0] & readdir->bitmask[0],
1564 attrs[1] & readdir->bitmask[1]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001565}
1566
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001567static 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 -07001568{
Trond Myklebustab19b482012-03-04 18:13:57 -05001569 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001570}
1571
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001572static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001573{
Trond Myklebustab19b482012-03-04 18:13:57 -05001574 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
Trond Myklebust6fdfb0bc2012-03-04 18:13:57 -05001575 encode_string(xdr, name->len, name->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001576}
1577
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001578static 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 -07001579{
Trond Myklebustab19b482012-03-04 18:13:57 -05001580 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
Benny Halevy811652b2009-08-14 17:19:34 +03001581 encode_string(xdr, oldname->len, oldname->name);
1582 encode_string(xdr, newname->len, newname->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001583}
1584
Chuck Leverbb4dae52012-03-01 17:01:48 -05001585static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1586 struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001587{
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001588 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
Trond Myklebustff2eb682012-03-05 11:40:12 -05001589 encode_uint64(xdr, clid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001590}
1591
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001592static void
Andy Adamsond0179312008-12-23 16:06:17 -05001593encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
Trond Myklebust56ae19f2005-10-27 22:12:40 -04001594{
Trond Myklebustab19b482012-03-04 18:13:57 -05001595 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
Trond Myklebust56ae19f2005-10-27 22:12:40 -04001596}
1597
Chuck Lever9f06c712010-12-14 14:59:18 +00001598static void
Andy Adamsond0179312008-12-23 16:06:17 -05001599encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
J. Bruce Fields23ec6962005-06-22 17:16:22 +00001600{
Al Viro8687b632006-10-19 23:28:48 -07001601 __be32 *p;
J. Bruce Fields23ec6962005-06-22 17:16:22 +00001602
Trond Myklebustab19b482012-03-04 18:13:57 -05001603 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001604 encode_nfs4_stateid(xdr, &zero_stateid);
Benny Halevy13c65ce2009-08-14 17:19:25 +03001605 p = reserve_space(xdr, 2*4);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001606 *p++ = cpu_to_be32(1);
Benny Halevy34558512009-08-14 17:19:30 +03001607 *p = cpu_to_be32(FATTR4_WORD0_ACL);
Chuck Lever9f06c712010-12-14 14:59:18 +00001608 BUG_ON(arg->acl_len % 4);
Benny Halevy13c65ce2009-08-14 17:19:25 +03001609 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001610 *p = cpu_to_be32(arg->acl_len);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00001611 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00001612}
1613
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001614static void
Andy Adamsond0179312008-12-23 16:06:17 -05001615encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001616{
Trond Myklebustab19b482012-03-04 18:13:57 -05001617 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001618}
1619
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001620static 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 -07001621{
Trond Myklebustab19b482012-03-04 18:13:57 -05001622 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001623 encode_nfs4_stateid(xdr, &arg->stateid);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001624 encode_attrs(xdr, arg->iap, server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001625}
1626
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001627static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001628{
Al Viro8687b632006-10-19 23:28:48 -07001629 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001630
Trond Myklebust70019512012-03-04 20:49:32 -05001631 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
Chuck Levercd937102012-03-02 17:14:31 -05001632 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001633
1634 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
Benny Halevy13c65ce2009-08-14 17:19:25 +03001635 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001636 *p = cpu_to_be32(setclientid->sc_prog);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001637 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1638 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
Benny Halevy13c65ce2009-08-14 17:19:25 +03001639 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001640 *p = cpu_to_be32(setclientid->sc_cb_ident);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001641}
1642
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04001643static 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 -07001644{
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001645 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1646 decode_setclientid_confirm_maxsz, hdr);
Trond Myklebustff2eb682012-03-05 11:40:12 -05001647 encode_uint64(xdr, arg->clientid);
Chuck Levercd937102012-03-02 17:14:31 -05001648 encode_nfs4_verifier(xdr, &arg->confirm);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001649}
1650
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001651static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001652{
Al Viro8687b632006-10-19 23:28:48 -07001653 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001654
Trond Myklebustab19b482012-03-04 18:13:57 -05001655 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
Trond Myklebustd0b496d2012-03-04 18:13:56 -05001656 encode_open_stateid(xdr, args->context, args->lock_context,
Trond Myklebust4fc87962012-03-08 17:42:01 -05001657 FMODE_WRITE, hdr->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001658
Benny Halevy13c65ce2009-08-14 17:19:25 +03001659 p = reserve_space(xdr, 16);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001660 p = xdr_encode_hyper(p, args->offset);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001661 *p++ = cpu_to_be32(args->stable);
Benny Halevy34558512009-08-14 17:19:30 +03001662 *p = cpu_to_be32(args->count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001663
1664 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001665}
1666
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001667static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001668{
Trond Myklebustab19b482012-03-04 18:13:57 -05001669 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001670 encode_nfs4_stateid(xdr, stateid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001671}
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001672
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00001673static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1674{
Trond Myklebustab19b482012-03-04 18:13:57 -05001675 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
Trond Myklebust6fdfb0bc2012-03-04 18:13:57 -05001676 encode_string(xdr, name->len, name->name);
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00001677}
1678
Benny Halevy99fe60d2009-04-01 09:22:29 -04001679#if defined(CONFIG_NFS_V4_1)
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001680/* NFSv4.1 operations */
Benny Halevy99fe60d2009-04-01 09:22:29 -04001681static void encode_exchange_id(struct xdr_stream *xdr,
1682 struct nfs41_exchange_id_args *args,
1683 struct compound_hdr *hdr)
1684{
1685 __be32 *p;
Weston Andros Adamsondb8ac8b2012-02-17 15:20:24 -05001686 char impl_name[NFS4_OPAQUE_LIMIT];
1687 int len = 0;
Benny Halevy99fe60d2009-04-01 09:22:29 -04001688
Trond Myklebust70019512012-03-04 20:49:32 -05001689 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
Chuck Levercd937102012-03-02 17:14:31 -05001690 encode_nfs4_verifier(xdr, args->verifier);
Benny Halevy99fe60d2009-04-01 09:22:29 -04001691
1692 encode_string(xdr, args->id_len, args->id);
1693
Benny Halevy13c65ce2009-08-14 17:19:25 +03001694 p = reserve_space(xdr, 12);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001695 *p++ = cpu_to_be32(args->flags);
1696 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
Weston Andros Adamsondb8ac8b2012-02-17 15:20:24 -05001697
1698 if (send_implementation_id &&
1699 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1700 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1701 <= NFS4_OPAQUE_LIMIT + 1)
1702 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1703 utsname()->sysname, utsname()->release,
1704 utsname()->version, utsname()->machine);
1705
1706 if (len > 0) {
1707 *p = cpu_to_be32(1); /* implementation id array length=1 */
1708
1709 encode_string(xdr,
1710 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1711 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1712 encode_string(xdr, len, impl_name);
1713 /* just send zeros for nii_date - the date is in nii_name */
1714 p = reserve_space(xdr, 12);
1715 p = xdr_encode_hyper(p, 0);
1716 *p = cpu_to_be32(0);
1717 } else
1718 *p = cpu_to_be32(0); /* implementation id array length=0 */
Benny Halevy99fe60d2009-04-01 09:22:29 -04001719}
Andy Adamsonfc931582009-04-01 09:22:31 -04001720
1721static void encode_create_session(struct xdr_stream *xdr,
1722 struct nfs41_create_session_args *args,
1723 struct compound_hdr *hdr)
1724{
1725 __be32 *p;
1726 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1727 uint32_t len;
1728 struct nfs_client *clp = args->client;
Mike Sager8e0d46e2009-12-17 12:06:26 -05001729 u32 max_resp_sz_cached;
1730
1731 /*
1732 * Assumes OPEN is the biggest non-idempotent compound.
1733 * 2 is the verifier.
1734 */
1735 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1736 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
Andy Adamsonfc931582009-04-01 09:22:31 -04001737
Andy Adamsonfc931582009-04-01 09:22:31 -04001738 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1739 clp->cl_ipaddr);
Benny Halevy42edd692009-08-14 17:19:13 +03001740
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001741 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
1742 p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12);
Andy Adamson114f64b2011-03-09 13:13:45 -05001743 p = xdr_encode_hyper(p, clp->cl_clientid);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001744 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1745 *p++ = cpu_to_be32(args->flags); /*flags */
Andy Adamsonfc931582009-04-01 09:22:31 -04001746
Andy Adamsonfc931582009-04-01 09:22:31 -04001747 /* Fore Channel */
Benny Halevyc9c30dd2011-06-11 17:08:39 -04001748 *p++ = cpu_to_be32(0); /* header padding size */
Benny Halevye75bc1c2009-08-14 17:18:54 +03001749 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1750 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
Mike Sager8e0d46e2009-12-17 12:06:26 -05001751 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
Benny Halevye75bc1c2009-08-14 17:18:54 +03001752 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1753 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1754 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
Andy Adamsonfc931582009-04-01 09:22:31 -04001755
1756 /* Back Channel */
Benny Halevyc9c30dd2011-06-11 17:08:39 -04001757 *p++ = cpu_to_be32(0); /* header padding size */
Benny Halevye75bc1c2009-08-14 17:18:54 +03001758 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1759 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1760 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1761 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1762 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1763 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
Andy Adamsonfc931582009-04-01 09:22:31 -04001764
Benny Halevye75bc1c2009-08-14 17:18:54 +03001765 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
Benny Halevye75bc1c2009-08-14 17:18:54 +03001766 *p++ = cpu_to_be32(1);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001767 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
Andy Adamsonfc931582009-04-01 09:22:31 -04001768
1769 /* authsys_parms rfc1831 */
Benny Halevye75bc1c2009-08-14 17:18:54 +03001770 *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */
Benny Halevy811652b2009-08-14 17:19:34 +03001771 p = xdr_encode_opaque(p, machine_name, len);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001772 *p++ = cpu_to_be32(0); /* UID */
1773 *p++ = cpu_to_be32(0); /* GID */
Benny Halevy34558512009-08-14 17:19:30 +03001774 *p = cpu_to_be32(0); /* No more gids */
Andy Adamsonfc931582009-04-01 09:22:31 -04001775}
Andy Adamson0f3e66c2009-04-01 09:22:34 -04001776
1777static void encode_destroy_session(struct xdr_stream *xdr,
1778 struct nfs4_session *session,
1779 struct compound_hdr *hdr)
1780{
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001781 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1782 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
Andy Adamson0f3e66c2009-04-01 09:22:34 -04001783}
Ricardo Labiaga18019752009-12-05 16:08:40 -05001784
1785static void encode_reclaim_complete(struct xdr_stream *xdr,
1786 struct nfs41_reclaim_complete_args *args,
1787 struct compound_hdr *hdr)
1788{
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001789 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1790 encode_uint32(xdr, args->one_fs);
Ricardo Labiaga18019752009-12-05 16:08:40 -05001791}
Benny Halevy99fe60d2009-04-01 09:22:29 -04001792#endif /* CONFIG_NFS_V4_1 */
1793
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001794static void encode_sequence(struct xdr_stream *xdr,
1795 const struct nfs4_sequence_args *args,
1796 struct compound_hdr *hdr)
1797{
1798#if defined(CONFIG_NFS_V4_1)
1799 struct nfs4_session *session = args->sa_session;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04001800 struct nfs4_slot_table *tp;
1801 struct nfs4_slot *slot;
1802 __be32 *p;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001803
1804 if (!session)
1805 return;
1806
Andy Adamsonfc01cea2009-04-01 09:22:36 -04001807 tp = &session->fc_slot_table;
1808
1809 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1810 slot = tp->slots + args->sa_slotid;
1811
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001812 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04001813
1814 /*
1815 * Sessionid + seqid + slotid + max slotid + cache_this
1816 */
1817 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1818 "max_slotid=%d cache_this=%d\n",
1819 __func__,
1820 ((u32 *)session->sess_id.data)[0],
1821 ((u32 *)session->sess_id.data)[1],
1822 ((u32 *)session->sess_id.data)[2],
1823 ((u32 *)session->sess_id.data)[3],
1824 slot->seq_nr, args->sa_slotid,
1825 tp->highest_used_slotid, args->sa_cache_this);
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001826 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
Benny Halevy93f0cf22009-08-14 17:19:06 +03001827 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001828 *p++ = cpu_to_be32(slot->seq_nr);
1829 *p++ = cpu_to_be32(args->sa_slotid);
1830 *p++ = cpu_to_be32(tp->highest_used_slotid);
Benny Halevy34558512009-08-14 17:19:30 +03001831 *p = cpu_to_be32(args->sa_cache_this);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001832#endif /* CONFIG_NFS_V4_1 */
1833}
1834
Andy Adamsonb1f69b72010-10-20 00:18:03 -04001835#ifdef CONFIG_NFS_V4_1
1836static void
Andy Adamson7f11d8d2011-07-30 20:52:35 -04001837encode_getdevicelist(struct xdr_stream *xdr,
1838 const struct nfs4_getdevicelist_args *args,
1839 struct compound_hdr *hdr)
1840{
1841 __be32 *p;
1842 nfs4_verifier dummy = {
1843 .data = "dummmmmy",
1844 };
1845
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001846 encode_op_hdr(xdr, OP_GETDEVICELIST, decode_getdevicelist_maxsz, hdr);
1847 p = reserve_space(xdr, 16);
Andy Adamson7f11d8d2011-07-30 20:52:35 -04001848 *p++ = cpu_to_be32(args->layoutclass);
1849 *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM);
1850 xdr_encode_hyper(p, 0ULL); /* cookie */
1851 encode_nfs4_verifier(xdr, &dummy);
Andy Adamson7f11d8d2011-07-30 20:52:35 -04001852}
1853
1854static void
Andy Adamsonb1f69b72010-10-20 00:18:03 -04001855encode_getdeviceinfo(struct xdr_stream *xdr,
1856 const struct nfs4_getdeviceinfo_args *args,
1857 struct compound_hdr *hdr)
1858{
1859 __be32 *p;
1860
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001861 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
1862 p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04001863 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1864 NFS4_DEVICEID4_SIZE);
1865 *p++ = cpu_to_be32(args->pdev->layout_type);
1866 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
1867 *p++ = cpu_to_be32(0); /* bitmap length 0 */
Andy Adamsonb1f69b72010-10-20 00:18:03 -04001868}
1869
1870static void
1871encode_layoutget(struct xdr_stream *xdr,
1872 const struct nfs4_layoutget_args *args,
1873 struct compound_hdr *hdr)
1874{
Andy Adamsonb1f69b72010-10-20 00:18:03 -04001875 __be32 *p;
1876
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001877 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1878 p = reserve_space(xdr, 36);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04001879 *p++ = cpu_to_be32(0); /* Signal layout available */
1880 *p++ = cpu_to_be32(args->type);
1881 *p++ = cpu_to_be32(args->range.iomode);
1882 p = xdr_encode_hyper(p, args->range.offset);
1883 p = xdr_encode_hyper(p, args->range.length);
1884 p = xdr_encode_hyper(p, args->minlength);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001885 encode_nfs4_stateid(xdr, &args->stateid);
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001886 encode_uint32(xdr, args->maxcount);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04001887
1888 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1889 __func__,
1890 args->type,
1891 args->range.iomode,
1892 (unsigned long)args->range.offset,
1893 (unsigned long)args->range.length,
1894 args->maxcount);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04001895}
Andy Adamson863a3c62011-03-23 13:27:54 +00001896
1897static int
1898encode_layoutcommit(struct xdr_stream *xdr,
Benny Halevyac7db722011-05-22 19:53:48 +03001899 struct inode *inode,
Andy Adamson863a3c62011-03-23 13:27:54 +00001900 const struct nfs4_layoutcommit_args *args,
1901 struct compound_hdr *hdr)
1902{
1903 __be32 *p;
1904
1905 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1906 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1907
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001908 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
1909 p = reserve_space(xdr, 20);
Andy Adamson863a3c62011-03-23 13:27:54 +00001910 /* Only whole file layouts */
1911 p = xdr_encode_hyper(p, 0); /* offset */
Peng Tao3557c6c2011-07-30 20:52:34 -04001912 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001913 *p = cpu_to_be32(0); /* reclaim */
1914 encode_nfs4_stateid(xdr, &args->stateid);
1915 p = reserve_space(xdr, 20);
Andy Adamson863a3c62011-03-23 13:27:54 +00001916 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1917 p = xdr_encode_hyper(p, args->lastbytewritten);
1918 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1919 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
Benny Halevyac7db722011-05-22 19:53:48 +03001920
1921 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
1922 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
1923 NFS_I(inode)->layout, xdr, args);
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001924 else
1925 encode_uint32(xdr, 0); /* no layout-type payload */
Andy Adamson863a3c62011-03-23 13:27:54 +00001926
Andy Adamson863a3c62011-03-23 13:27:54 +00001927 return 0;
1928}
Benny Halevycbe82602011-05-22 19:52:37 +03001929
1930static void
1931encode_layoutreturn(struct xdr_stream *xdr,
1932 const struct nfs4_layoutreturn_args *args,
1933 struct compound_hdr *hdr)
1934{
1935 __be32 *p;
1936
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001937 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
1938 p = reserve_space(xdr, 16);
Benny Halevycbe82602011-05-22 19:52:37 +03001939 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
1940 *p++ = cpu_to_be32(args->layout_type);
1941 *p++ = cpu_to_be32(IOMODE_ANY);
1942 *p = cpu_to_be32(RETURN_FILE);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001943 p = reserve_space(xdr, 16);
Benny Halevycbe82602011-05-22 19:52:37 +03001944 p = xdr_encode_hyper(p, 0);
1945 p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
1946 spin_lock(&args->inode->i_lock);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001947 encode_nfs4_stateid(xdr, &args->stateid);
Benny Halevycbe82602011-05-22 19:52:37 +03001948 spin_unlock(&args->inode->i_lock);
Andy Adamson04a55542011-05-22 19:53:10 +03001949 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
1950 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
1951 NFS_I(args->inode)->layout, xdr, args);
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001952 } else
1953 encode_uint32(xdr, 0);
Benny Halevycbe82602011-05-22 19:52:37 +03001954}
Bryan Schumakerfca78d62011-06-02 14:59:07 -04001955
1956static int
1957encode_secinfo_no_name(struct xdr_stream *xdr,
1958 const struct nfs41_secinfo_no_name_args *args,
1959 struct compound_hdr *hdr)
1960{
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001961 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
1962 encode_uint32(xdr, args->style);
Bryan Schumakerfca78d62011-06-02 14:59:07 -04001963 return 0;
1964}
Bryan Schumaker7d974792011-06-02 14:59:08 -04001965
1966static void encode_test_stateid(struct xdr_stream *xdr,
1967 struct nfs41_test_stateid_args *args,
1968 struct compound_hdr *hdr)
1969{
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001970 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
1971 encode_uint32(xdr, 1);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001972 encode_nfs4_stateid(xdr, args->stateid);
Bryan Schumaker7d974792011-06-02 14:59:08 -04001973}
Bryan Schumaker9aeda352011-06-02 14:59:09 -04001974
1975static void encode_free_stateid(struct xdr_stream *xdr,
1976 struct nfs41_free_stateid_args *args,
1977 struct compound_hdr *hdr)
1978{
Trond Myklebustab19b482012-03-04 18:13:57 -05001979 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001980 encode_nfs4_stateid(xdr, args->stateid);
Bryan Schumaker9aeda352011-06-02 14:59:09 -04001981}
Andy Adamsonb1f69b72010-10-20 00:18:03 -04001982#endif /* CONFIG_NFS_V4_1 */
1983
Linus Torvalds1da177e2005-04-16 15:20:36 -07001984/*
1985 * END OF "GENERIC" ENCODE ROUTINES.
1986 */
1987
Benny Halevy66cc0422009-04-01 09:22:10 -04001988static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
1989{
1990#if defined(CONFIG_NFS_V4_1)
1991 if (args->sa_session)
Trond Myklebusta4432342010-06-16 09:52:27 -04001992 return args->sa_session->clp->cl_mvops->minor_version;
Benny Halevy66cc0422009-04-01 09:22:10 -04001993#endif /* CONFIG_NFS_V4_1 */
1994 return 0;
1995}
1996
Linus Torvalds1da177e2005-04-16 15:20:36 -07001997/*
1998 * Encode an ACCESS request
1999 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002000static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2001 const struct nfs4_accessargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002002{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002003 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002004 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002005 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002006
Chuck Lever9f06c712010-12-14 14:59:18 +00002007 encode_compound_hdr(xdr, req, &hdr);
2008 encode_sequence(xdr, &args->seq_args, &hdr);
2009 encode_putfh(xdr, args->fh, &hdr);
2010 encode_access(xdr, args->access, &hdr);
2011 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002012 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002013}
2014
2015/*
2016 * Encode LOOKUP request
2017 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002018static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2019 const struct nfs4_lookup_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002020{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002021 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002022 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002023 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002024
Chuck Lever9f06c712010-12-14 14:59:18 +00002025 encode_compound_hdr(xdr, req, &hdr);
2026 encode_sequence(xdr, &args->seq_args, &hdr);
2027 encode_putfh(xdr, args->dir_fh, &hdr);
2028 encode_lookup(xdr, args->name, &hdr);
2029 encode_getfh(xdr, &hdr);
2030 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002031 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002032}
2033
2034/*
2035 * Encode LOOKUP_ROOT request
2036 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002037static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2038 struct xdr_stream *xdr,
2039 const struct nfs4_lookup_root_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002040{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002041 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002042 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002043 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002044
Chuck Lever9f06c712010-12-14 14:59:18 +00002045 encode_compound_hdr(xdr, req, &hdr);
2046 encode_sequence(xdr, &args->seq_args, &hdr);
2047 encode_putrootfh(xdr, &hdr);
2048 encode_getfh(xdr, &hdr);
2049 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002050 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002051}
2052
2053/*
2054 * Encode REMOVE request
2055 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002056static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2057 const struct nfs_removeargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002058{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002059 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002060 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002061 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002062
Chuck Lever9f06c712010-12-14 14:59:18 +00002063 encode_compound_hdr(xdr, req, &hdr);
2064 encode_sequence(xdr, &args->seq_args, &hdr);
2065 encode_putfh(xdr, args->fh, &hdr);
2066 encode_remove(xdr, &args->name, &hdr);
2067 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002068 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002069}
2070
2071/*
2072 * Encode RENAME request
2073 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002074static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2075 const struct nfs_renameargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002076{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002077 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002078 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002079 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002080
Chuck Lever9f06c712010-12-14 14:59:18 +00002081 encode_compound_hdr(xdr, req, &hdr);
2082 encode_sequence(xdr, &args->seq_args, &hdr);
2083 encode_putfh(xdr, args->old_dir, &hdr);
2084 encode_savefh(xdr, &hdr);
2085 encode_putfh(xdr, args->new_dir, &hdr);
2086 encode_rename(xdr, args->old_name, args->new_name, &hdr);
2087 encode_getfattr(xdr, args->bitmask, &hdr);
2088 encode_restorefh(xdr, &hdr);
2089 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002090 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002091}
2092
2093/*
2094 * Encode LINK request
2095 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002096static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2097 const struct nfs4_link_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002098{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002099 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002100 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002101 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002102
Chuck Lever9f06c712010-12-14 14:59:18 +00002103 encode_compound_hdr(xdr, req, &hdr);
2104 encode_sequence(xdr, &args->seq_args, &hdr);
2105 encode_putfh(xdr, args->fh, &hdr);
2106 encode_savefh(xdr, &hdr);
2107 encode_putfh(xdr, args->dir_fh, &hdr);
2108 encode_link(xdr, args->name, &hdr);
2109 encode_getfattr(xdr, args->bitmask, &hdr);
2110 encode_restorefh(xdr, &hdr);
2111 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002112 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002113}
2114
2115/*
2116 * Encode CREATE request
2117 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002118static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2119 const struct nfs4_create_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002120{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002121 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
Chuck Lever9f06c712010-12-14 14:59:18 +00002125 encode_compound_hdr(xdr, req, &hdr);
2126 encode_sequence(xdr, &args->seq_args, &hdr);
2127 encode_putfh(xdr, args->dir_fh, &hdr);
2128 encode_savefh(xdr, &hdr);
2129 encode_create(xdr, args, &hdr);
2130 encode_getfh(xdr, &hdr);
2131 encode_getfattr(xdr, args->bitmask, &hdr);
2132 encode_restorefh(xdr, &hdr);
2133 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002134 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002135}
2136
2137/*
2138 * Encode SYMLINK request
2139 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002140static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2141 const struct nfs4_create_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002142{
Chuck Lever9f06c712010-12-14 14:59:18 +00002143 nfs4_xdr_enc_create(req, xdr, args);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002144}
2145
2146/*
2147 * Encode GETATTR request
2148 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002149static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2150 const struct nfs4_getattr_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002151{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002152 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002153 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002154 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002155
Chuck Lever9f06c712010-12-14 14:59:18 +00002156 encode_compound_hdr(xdr, req, &hdr);
2157 encode_sequence(xdr, &args->seq_args, &hdr);
2158 encode_putfh(xdr, args->fh, &hdr);
2159 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002160 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002161}
2162
2163/*
2164 * Encode a CLOSE request
2165 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002166static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2167 struct nfs_closeargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002168{
Andy Adamson05d564f2008-12-23 16:06:15 -05002169 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002170 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Andy Adamson05d564f2008-12-23 16:06:15 -05002171 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002172
Chuck Lever9f06c712010-12-14 14:59:18 +00002173 encode_compound_hdr(xdr, req, &hdr);
2174 encode_sequence(xdr, &args->seq_args, &hdr);
2175 encode_putfh(xdr, args->fh, &hdr);
2176 encode_close(xdr, args, &hdr);
2177 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002178 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002179}
2180
2181/*
2182 * Encode an OPEN request
2183 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002184static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2185 struct nfs_openargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002186{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002187 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002188 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002189 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002190
Chuck Lever9f06c712010-12-14 14:59:18 +00002191 encode_compound_hdr(xdr, req, &hdr);
2192 encode_sequence(xdr, &args->seq_args, &hdr);
2193 encode_putfh(xdr, args->fh, &hdr);
2194 encode_savefh(xdr, &hdr);
2195 encode_open(xdr, args, &hdr);
2196 encode_getfh(xdr, &hdr);
2197 encode_getfattr(xdr, args->bitmask, &hdr);
2198 encode_restorefh(xdr, &hdr);
Trond Myklebust6926afd2012-01-07 13:22:46 -05002199 encode_getfattr(xdr, args->dir_bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002200 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002201}
2202
2203/*
2204 * Encode an OPEN_CONFIRM request
2205 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002206static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2207 struct xdr_stream *xdr,
2208 struct nfs_open_confirmargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002209{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002210 struct compound_hdr hdr = {
Andy Adamsond0179312008-12-23 16:06:17 -05002211 .nops = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002212 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002213
Chuck Lever9f06c712010-12-14 14:59:18 +00002214 encode_compound_hdr(xdr, req, &hdr);
2215 encode_putfh(xdr, args->fh, &hdr);
2216 encode_open_confirm(xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002217 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002218}
2219
2220/*
2221 * Encode an OPEN request with no attributes.
2222 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002223static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2224 struct xdr_stream *xdr,
2225 struct nfs_openargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002226{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002227 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002228 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002229 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002230
Chuck Lever9f06c712010-12-14 14:59:18 +00002231 encode_compound_hdr(xdr, req, &hdr);
2232 encode_sequence(xdr, &args->seq_args, &hdr);
2233 encode_putfh(xdr, args->fh, &hdr);
2234 encode_open(xdr, args, &hdr);
2235 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002236 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002237}
2238
2239/*
2240 * Encode an OPEN_DOWNGRADE request
2241 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002242static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2243 struct xdr_stream *xdr,
2244 struct nfs_closeargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002245{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002246 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002247 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002248 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002249
Chuck Lever9f06c712010-12-14 14:59:18 +00002250 encode_compound_hdr(xdr, req, &hdr);
2251 encode_sequence(xdr, &args->seq_args, &hdr);
2252 encode_putfh(xdr, args->fh, &hdr);
2253 encode_open_downgrade(xdr, args, &hdr);
2254 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002255 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002256}
2257
2258/*
2259 * Encode a LOCK request
2260 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002261static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2262 struct nfs_lock_args *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002263{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002264 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002265 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002266 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002267
Chuck Lever9f06c712010-12-14 14:59:18 +00002268 encode_compound_hdr(xdr, req, &hdr);
2269 encode_sequence(xdr, &args->seq_args, &hdr);
2270 encode_putfh(xdr, args->fh, &hdr);
2271 encode_lock(xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002272 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002273}
2274
2275/*
2276 * Encode a LOCKT request
2277 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002278static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2279 struct nfs_lockt_args *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002280{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002281 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002282 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002283 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002284
Chuck Lever9f06c712010-12-14 14:59:18 +00002285 encode_compound_hdr(xdr, req, &hdr);
2286 encode_sequence(xdr, &args->seq_args, &hdr);
2287 encode_putfh(xdr, args->fh, &hdr);
2288 encode_lockt(xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002289 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002290}
2291
2292/*
2293 * Encode a LOCKU request
2294 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002295static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2296 struct nfs_locku_args *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002297{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002298 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002299 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002300 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002301
Chuck Lever9f06c712010-12-14 14:59:18 +00002302 encode_compound_hdr(xdr, req, &hdr);
2303 encode_sequence(xdr, &args->seq_args, &hdr);
2304 encode_putfh(xdr, args->fh, &hdr);
2305 encode_locku(xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002306 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002307}
2308
Chuck Lever9f06c712010-12-14 14:59:18 +00002309static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2310 struct xdr_stream *xdr,
2311 struct nfs_release_lockowner_args *args)
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04002312{
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04002313 struct compound_hdr hdr = {
2314 .minorversion = 0,
2315 };
2316
Chuck Lever9f06c712010-12-14 14:59:18 +00002317 encode_compound_hdr(xdr, req, &hdr);
2318 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04002319 encode_nops(&hdr);
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04002320}
2321
Linus Torvalds1da177e2005-04-16 15:20:36 -07002322/*
2323 * Encode a READLINK request
2324 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002325static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2326 const struct nfs4_readlink *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002327{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002328 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002329 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002330 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002331
Chuck Lever9f06c712010-12-14 14:59:18 +00002332 encode_compound_hdr(xdr, req, &hdr);
2333 encode_sequence(xdr, &args->seq_args, &hdr);
2334 encode_putfh(xdr, args->fh, &hdr);
2335 encode_readlink(xdr, args, req, &hdr);
Trond Myklebuste3a535e2007-07-19 10:03:38 -04002336
Benny Halevy28f56692009-04-01 09:22:09 -04002337 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
Trond Myklebuste3a535e2007-07-19 10:03:38 -04002338 args->pgbase, args->pglen);
Andy Adamsond0179312008-12-23 16:06:17 -05002339 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002340}
2341
2342/*
2343 * Encode a READDIR request
2344 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002345static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2346 const struct nfs4_readdir_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002347{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002348 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002349 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002350 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002351
Chuck Lever9f06c712010-12-14 14:59:18 +00002352 encode_compound_hdr(xdr, req, &hdr);
2353 encode_sequence(xdr, &args->seq_args, &hdr);
2354 encode_putfh(xdr, args->fh, &hdr);
2355 encode_readdir(xdr, args, req, &hdr);
Trond Myklebustd6ac02d2007-07-19 10:03:37 -04002356
Benny Halevy28f56692009-04-01 09:22:09 -04002357 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
Trond Myklebustd6ac02d2007-07-19 10:03:37 -04002358 args->pgbase, args->count);
2359 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
Benny Halevy28f56692009-04-01 09:22:09 -04002360 __func__, hdr.replen << 2, args->pages,
Trond Myklebustd6ac02d2007-07-19 10:03:37 -04002361 args->pgbase, args->count);
Andy Adamsond0179312008-12-23 16:06:17 -05002362 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002363}
2364
2365/*
2366 * Encode a READ request
2367 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002368static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2369 struct nfs_readargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002370{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002371 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002372 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002373 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002374
Chuck Lever9f06c712010-12-14 14:59:18 +00002375 encode_compound_hdr(xdr, req, &hdr);
2376 encode_sequence(xdr, &args->seq_args, &hdr);
2377 encode_putfh(xdr, args->fh, &hdr);
2378 encode_read(xdr, args, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002379
Benny Halevy28f56692009-04-01 09:22:09 -04002380 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002381 args->pages, args->pgbase, args->count);
\"Talpey, Thomas\4f22ccc2007-09-10 13:44:58 -04002382 req->rq_rcv_buf.flags |= XDRBUF_READ;
Andy Adamsond0179312008-12-23 16:06:17 -05002383 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002384}
2385
2386/*
2387 * Encode an SETATTR request
2388 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002389static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2390 struct nfs_setattrargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002391{
Andy Adamson05d564f2008-12-23 16:06:15 -05002392 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002393 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Andy Adamson05d564f2008-12-23 16:06:15 -05002394 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002395
Chuck Lever9f06c712010-12-14 14:59:18 +00002396 encode_compound_hdr(xdr, req, &hdr);
2397 encode_sequence(xdr, &args->seq_args, &hdr);
2398 encode_putfh(xdr, args->fh, &hdr);
2399 encode_setattr(xdr, args, args->server, &hdr);
2400 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002401 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002402}
2403
2404/*
J. Bruce Fields029d1052005-06-22 17:16:22 +00002405 * Encode a GETACL request
2406 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002407static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2408 struct nfs_getaclargs *args)
J. Bruce Fields029d1052005-06-22 17:16:22 +00002409{
J. Bruce Fields029d1052005-06-22 17:16:22 +00002410 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002411 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
J. Bruce Fields029d1052005-06-22 17:16:22 +00002412 };
Benny Halevy28f56692009-04-01 09:22:09 -04002413 uint32_t replen;
J. Bruce Fields029d1052005-06-22 17:16:22 +00002414
Chuck Lever9f06c712010-12-14 14:59:18 +00002415 encode_compound_hdr(xdr, req, &hdr);
2416 encode_sequence(xdr, &args->seq_args, &hdr);
2417 encode_putfh(xdr, args->fh, &hdr);
Andy Adamsonbf118a32011-12-07 11:55:27 -05002418 replen = hdr.replen + op_decode_hdr_maxsz + 1;
Chuck Lever9f06c712010-12-14 14:59:18 +00002419 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002420
Benny Halevy28f56692009-04-01 09:22:09 -04002421 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
J. Bruce Fields029d1052005-06-22 17:16:22 +00002422 args->acl_pages, args->acl_pgbase, args->acl_len);
Andy Adamsonbf118a32011-12-07 11:55:27 -05002423
Andy Adamsond0179312008-12-23 16:06:17 -05002424 encode_nops(&hdr);
J. Bruce Fields029d1052005-06-22 17:16:22 +00002425}
2426
2427/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002428 * Encode a WRITE request
2429 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002430static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2431 struct nfs_writeargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002432{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002433 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002434 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002435 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002436
Chuck Lever9f06c712010-12-14 14:59:18 +00002437 encode_compound_hdr(xdr, req, &hdr);
2438 encode_sequence(xdr, &args->seq_args, &hdr);
2439 encode_putfh(xdr, args->fh, &hdr);
2440 encode_write(xdr, args, &hdr);
\"Talpey, Thomas\4f22ccc2007-09-10 13:44:58 -04002441 req->rq_snd_buf.flags |= XDRBUF_WRITE;
Fred Isaman7ffd1062011-03-03 15:13:46 +00002442 if (args->bitmask)
2443 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002444 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002445}
2446
2447/*
2448 * a COMMIT request
2449 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002450static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2451 struct nfs_writeargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002452{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002453 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002454 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002455 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002456
Chuck Lever9f06c712010-12-14 14:59:18 +00002457 encode_compound_hdr(xdr, req, &hdr);
2458 encode_sequence(xdr, &args->seq_args, &hdr);
2459 encode_putfh(xdr, args->fh, &hdr);
2460 encode_commit(xdr, args, &hdr);
Fred Isaman988b6dc2011-03-23 13:27:52 +00002461 if (args->bitmask)
2462 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002463 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002464}
2465
2466/*
2467 * FSINFO request
2468 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002469static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2470 struct nfs4_fsinfo_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002471{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002472 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002473 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002474 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002475
Chuck Lever9f06c712010-12-14 14:59:18 +00002476 encode_compound_hdr(xdr, req, &hdr);
2477 encode_sequence(xdr, &args->seq_args, &hdr);
2478 encode_putfh(xdr, args->fh, &hdr);
2479 encode_fsinfo(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002480 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002481}
2482
2483/*
2484 * a PATHCONF request
2485 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002486static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2487 const struct nfs4_pathconf_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002488{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002489 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002490 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002491 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002492
Chuck Lever9f06c712010-12-14 14:59:18 +00002493 encode_compound_hdr(xdr, req, &hdr);
2494 encode_sequence(xdr, &args->seq_args, &hdr);
2495 encode_putfh(xdr, args->fh, &hdr);
2496 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002497 &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002498 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002499}
2500
2501/*
2502 * a STATFS request
2503 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002504static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2505 const struct nfs4_statfs_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002506{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002507 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002508 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002509 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002510
Chuck Lever9f06c712010-12-14 14:59:18 +00002511 encode_compound_hdr(xdr, req, &hdr);
2512 encode_sequence(xdr, &args->seq_args, &hdr);
2513 encode_putfh(xdr, args->fh, &hdr);
2514 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002515 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002516 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002517}
2518
2519/*
2520 * GETATTR_BITMAP request
2521 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002522static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2523 struct xdr_stream *xdr,
2524 struct nfs4_server_caps_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002525{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002526 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002527 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002528 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002529
Chuck Lever9f06c712010-12-14 14:59:18 +00002530 encode_compound_hdr(xdr, req, &hdr);
2531 encode_sequence(xdr, &args->seq_args, &hdr);
2532 encode_putfh(xdr, args->fhandle, &hdr);
2533 encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
Chuck Lever264e6352012-03-01 17:02:05 -05002534 FATTR4_WORD0_FH_EXPIRE_TYPE|
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002535 FATTR4_WORD0_LINK_SUPPORT|
2536 FATTR4_WORD0_SYMLINK_SUPPORT|
2537 FATTR4_WORD0_ACLSUPPORT, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002538 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002539}
2540
2541/*
2542 * a RENEW request
2543 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002544static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2545 struct nfs_client *clp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002546{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002547 struct compound_hdr hdr = {
Andy Adamsond0179312008-12-23 16:06:17 -05002548 .nops = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002549 };
2550
Chuck Lever9f06c712010-12-14 14:59:18 +00002551 encode_compound_hdr(xdr, req, &hdr);
Chuck Leverbb4dae52012-03-01 17:01:48 -05002552 encode_renew(xdr, clp->cl_clientid, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002553 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002554}
2555
2556/*
2557 * a SETCLIENTID request
2558 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002559static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2560 struct xdr_stream *xdr,
2561 struct nfs4_setclientid *sc)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002562{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002563 struct compound_hdr hdr = {
Andy Adamsond0179312008-12-23 16:06:17 -05002564 .nops = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002565 };
2566
Chuck Lever9f06c712010-12-14 14:59:18 +00002567 encode_compound_hdr(xdr, req, &hdr);
2568 encode_setclientid(xdr, sc, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002569 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002570}
2571
2572/*
2573 * a SETCLIENTID_CONFIRM request
2574 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002575static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2576 struct xdr_stream *xdr,
2577 struct nfs4_setclientid_res *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002578{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002579 struct compound_hdr hdr = {
Andy Adamsond0179312008-12-23 16:06:17 -05002580 .nops = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002581 };
Fred Isamandae100c2011-07-30 20:52:37 -04002582 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002583
Chuck Lever9f06c712010-12-14 14:59:18 +00002584 encode_compound_hdr(xdr, req, &hdr);
2585 encode_setclientid_confirm(xdr, arg, &hdr);
2586 encode_putrootfh(xdr, &hdr);
2587 encode_fsinfo(xdr, lease_bitmap, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002588 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002589}
2590
2591/*
2592 * DELEGRETURN request
2593 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002594static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2595 struct xdr_stream *xdr,
2596 const struct nfs4_delegreturnargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002597{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002598 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002599 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002600 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002601
Chuck Lever9f06c712010-12-14 14:59:18 +00002602 encode_compound_hdr(xdr, req, &hdr);
2603 encode_sequence(xdr, &args->seq_args, &hdr);
2604 encode_putfh(xdr, args->fhandle, &hdr);
2605 encode_delegreturn(xdr, args->stateid, &hdr);
2606 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002607 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002608}
2609
2610/*
Trond Myklebust683b57b2006-06-09 09:34:22 -04002611 * Encode FS_LOCATIONS request
2612 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002613static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2614 struct xdr_stream *xdr,
2615 struct nfs4_fs_locations_arg *args)
Trond Myklebust683b57b2006-06-09 09:34:22 -04002616{
Trond Myklebust683b57b2006-06-09 09:34:22 -04002617 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002618 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Trond Myklebust683b57b2006-06-09 09:34:22 -04002619 };
Benny Halevy28f56692009-04-01 09:22:09 -04002620 uint32_t replen;
Trond Myklebust683b57b2006-06-09 09:34:22 -04002621
Chuck Lever9f06c712010-12-14 14:59:18 +00002622 encode_compound_hdr(xdr, req, &hdr);
2623 encode_sequence(xdr, &args->seq_args, &hdr);
2624 encode_putfh(xdr, args->dir_fh, &hdr);
2625 encode_lookup(xdr, args->name, &hdr);
Benny Halevy28f56692009-04-01 09:22:09 -04002626 replen = hdr.replen; /* get the attribute into args->page */
Chuck Lever9f06c712010-12-14 14:59:18 +00002627 encode_fs_locations(xdr, args->bitmask, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002628
Benny Halevy28f56692009-04-01 09:22:09 -04002629 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
Trond Myklebust683b57b2006-06-09 09:34:22 -04002630 0, PAGE_SIZE);
Andy Adamsond0179312008-12-23 16:06:17 -05002631 encode_nops(&hdr);
Trond Myklebust683b57b2006-06-09 09:34:22 -04002632}
2633
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00002634/*
2635 * Encode SECINFO request
2636 */
2637static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2638 struct xdr_stream *xdr,
2639 struct nfs4_secinfo_arg *args)
2640{
2641 struct compound_hdr hdr = {
2642 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2643 };
2644
2645 encode_compound_hdr(xdr, req, &hdr);
2646 encode_sequence(xdr, &args->seq_args, &hdr);
2647 encode_putfh(xdr, args->dir_fh, &hdr);
2648 encode_secinfo(xdr, args->name, &hdr);
2649 encode_nops(&hdr);
2650}
2651
Benny Halevy99fe60d2009-04-01 09:22:29 -04002652#if defined(CONFIG_NFS_V4_1)
2653/*
2654 * EXCHANGE_ID request
2655 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002656static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2657 struct xdr_stream *xdr,
2658 struct nfs41_exchange_id_args *args)
Benny Halevy99fe60d2009-04-01 09:22:29 -04002659{
Benny Halevy99fe60d2009-04-01 09:22:29 -04002660 struct compound_hdr hdr = {
Trond Myklebusta4432342010-06-16 09:52:27 -04002661 .minorversion = args->client->cl_mvops->minor_version,
Benny Halevy99fe60d2009-04-01 09:22:29 -04002662 };
2663
Chuck Lever9f06c712010-12-14 14:59:18 +00002664 encode_compound_hdr(xdr, req, &hdr);
2665 encode_exchange_id(xdr, args, &hdr);
Benny Halevy99fe60d2009-04-01 09:22:29 -04002666 encode_nops(&hdr);
Benny Halevy99fe60d2009-04-01 09:22:29 -04002667}
Andy Adamson2050f0c2009-04-01 09:22:30 -04002668
2669/*
Andy Adamsonfc931582009-04-01 09:22:31 -04002670 * a CREATE_SESSION request
2671 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002672static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2673 struct xdr_stream *xdr,
2674 struct nfs41_create_session_args *args)
Andy Adamsonfc931582009-04-01 09:22:31 -04002675{
Andy Adamsonfc931582009-04-01 09:22:31 -04002676 struct compound_hdr hdr = {
Trond Myklebusta4432342010-06-16 09:52:27 -04002677 .minorversion = args->client->cl_mvops->minor_version,
Andy Adamsonfc931582009-04-01 09:22:31 -04002678 };
2679
Chuck Lever9f06c712010-12-14 14:59:18 +00002680 encode_compound_hdr(xdr, req, &hdr);
2681 encode_create_session(xdr, args, &hdr);
Andy Adamsonfc931582009-04-01 09:22:31 -04002682 encode_nops(&hdr);
Andy Adamsonfc931582009-04-01 09:22:31 -04002683}
2684
2685/*
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002686 * a DESTROY_SESSION request
2687 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002688static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2689 struct xdr_stream *xdr,
2690 struct nfs4_session *session)
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002691{
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002692 struct compound_hdr hdr = {
Trond Myklebusta4432342010-06-16 09:52:27 -04002693 .minorversion = session->clp->cl_mvops->minor_version,
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002694 };
2695
Chuck Lever9f06c712010-12-14 14:59:18 +00002696 encode_compound_hdr(xdr, req, &hdr);
2697 encode_destroy_session(xdr, session, &hdr);
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002698 encode_nops(&hdr);
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002699}
2700
2701/*
Andy Adamsonfc01cea2009-04-01 09:22:36 -04002702 * a SEQUENCE request
2703 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002704static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2705 struct nfs4_sequence_args *args)
Andy Adamsonfc01cea2009-04-01 09:22:36 -04002706{
Andy Adamsonfc01cea2009-04-01 09:22:36 -04002707 struct compound_hdr hdr = {
2708 .minorversion = nfs4_xdr_minorversion(args),
2709 };
2710
Chuck Lever9f06c712010-12-14 14:59:18 +00002711 encode_compound_hdr(xdr, req, &hdr);
2712 encode_sequence(xdr, args, &hdr);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04002713 encode_nops(&hdr);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04002714}
2715
2716/*
Andy Adamson2050f0c2009-04-01 09:22:30 -04002717 * a GET_LEASE_TIME request
2718 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002719static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2720 struct xdr_stream *xdr,
2721 struct nfs4_get_lease_time_args *args)
Andy Adamson2050f0c2009-04-01 09:22:30 -04002722{
Andy Adamson2050f0c2009-04-01 09:22:30 -04002723 struct compound_hdr hdr = {
2724 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2725 };
Fred Isamandae100c2011-07-30 20:52:37 -04002726 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
Andy Adamson2050f0c2009-04-01 09:22:30 -04002727
Chuck Lever9f06c712010-12-14 14:59:18 +00002728 encode_compound_hdr(xdr, req, &hdr);
2729 encode_sequence(xdr, &args->la_seq_args, &hdr);
2730 encode_putrootfh(xdr, &hdr);
2731 encode_fsinfo(xdr, lease_bitmap, &hdr);
Andy Adamson2050f0c2009-04-01 09:22:30 -04002732 encode_nops(&hdr);
Andy Adamson2050f0c2009-04-01 09:22:30 -04002733}
Ricardo Labiaga18019752009-12-05 16:08:40 -05002734
2735/*
2736 * a RECLAIM_COMPLETE request
2737 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002738static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2739 struct xdr_stream *xdr,
2740 struct nfs41_reclaim_complete_args *args)
Ricardo Labiaga18019752009-12-05 16:08:40 -05002741{
Ricardo Labiaga18019752009-12-05 16:08:40 -05002742 struct compound_hdr hdr = {
2743 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2744 };
2745
Chuck Lever9f06c712010-12-14 14:59:18 +00002746 encode_compound_hdr(xdr, req, &hdr);
2747 encode_sequence(xdr, &args->seq_args, &hdr);
2748 encode_reclaim_complete(xdr, args, &hdr);
Ricardo Labiaga18019752009-12-05 16:08:40 -05002749 encode_nops(&hdr);
Ricardo Labiaga18019752009-12-05 16:08:40 -05002750}
2751
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002752/*
Andy Adamson7f11d8d2011-07-30 20:52:35 -04002753 * Encode GETDEVICELIST request
2754 */
2755static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req,
2756 struct xdr_stream *xdr,
2757 struct nfs4_getdevicelist_args *args)
2758{
2759 struct compound_hdr hdr = {
2760 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2761 };
2762
2763 encode_compound_hdr(xdr, req, &hdr);
2764 encode_sequence(xdr, &args->seq_args, &hdr);
2765 encode_putfh(xdr, args->fh, &hdr);
2766 encode_getdevicelist(xdr, args, &hdr);
2767 encode_nops(&hdr);
2768}
2769
2770/*
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002771 * Encode GETDEVICEINFO request
2772 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002773static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2774 struct xdr_stream *xdr,
2775 struct nfs4_getdeviceinfo_args *args)
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002776{
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002777 struct compound_hdr hdr = {
2778 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2779 };
2780
Chuck Lever9f06c712010-12-14 14:59:18 +00002781 encode_compound_hdr(xdr, req, &hdr);
2782 encode_sequence(xdr, &args->seq_args, &hdr);
2783 encode_getdeviceinfo(xdr, args, &hdr);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002784
2785 /* set up reply kvec. Subtract notification bitmap max size (2)
2786 * so that notification bitmap is put in xdr_buf tail */
2787 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2788 args->pdev->pages, args->pdev->pgbase,
2789 args->pdev->pglen);
2790
2791 encode_nops(&hdr);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002792}
2793
2794/*
2795 * Encode LAYOUTGET request
2796 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002797static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2798 struct xdr_stream *xdr,
2799 struct nfs4_layoutget_args *args)
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002800{
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002801 struct compound_hdr hdr = {
2802 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2803 };
2804
Chuck Lever9f06c712010-12-14 14:59:18 +00002805 encode_compound_hdr(xdr, req, &hdr);
2806 encode_sequence(xdr, &args->seq_args, &hdr);
2807 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2808 encode_layoutget(xdr, args, &hdr);
Weston Andros Adamson35124a02011-03-24 16:48:21 -04002809
2810 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2811 args->layout.pages, 0, args->layout.pglen);
2812
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002813 encode_nops(&hdr);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002814}
Andy Adamson863a3c62011-03-23 13:27:54 +00002815
2816/*
2817 * Encode LAYOUTCOMMIT request
2818 */
Benny Halevycbe82602011-05-22 19:52:37 +03002819static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2820 struct xdr_stream *xdr,
2821 struct nfs4_layoutcommit_args *args)
Andy Adamson863a3c62011-03-23 13:27:54 +00002822{
Benny Halevyac7db722011-05-22 19:53:48 +03002823 struct nfs4_layoutcommit_data *data =
2824 container_of(args, struct nfs4_layoutcommit_data, args);
Andy Adamson863a3c62011-03-23 13:27:54 +00002825 struct compound_hdr hdr = {
2826 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2827 };
2828
2829 encode_compound_hdr(xdr, req, &hdr);
2830 encode_sequence(xdr, &args->seq_args, &hdr);
2831 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
Benny Halevyac7db722011-05-22 19:53:48 +03002832 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
Andy Adamson863a3c62011-03-23 13:27:54 +00002833 encode_getfattr(xdr, args->bitmask, &hdr);
2834 encode_nops(&hdr);
Benny Halevycbe82602011-05-22 19:52:37 +03002835}
2836
2837/*
2838 * Encode LAYOUTRETURN request
2839 */
2840static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2841 struct xdr_stream *xdr,
2842 struct nfs4_layoutreturn_args *args)
2843{
2844 struct compound_hdr hdr = {
2845 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2846 };
2847
2848 encode_compound_hdr(xdr, req, &hdr);
2849 encode_sequence(xdr, &args->seq_args, &hdr);
2850 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2851 encode_layoutreturn(xdr, args, &hdr);
2852 encode_nops(&hdr);
Andy Adamson863a3c62011-03-23 13:27:54 +00002853}
Bryan Schumakerfca78d62011-06-02 14:59:07 -04002854
2855/*
2856 * Encode SECINFO_NO_NAME request
2857 */
2858static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2859 struct xdr_stream *xdr,
2860 struct nfs41_secinfo_no_name_args *args)
2861{
2862 struct compound_hdr hdr = {
2863 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2864 };
2865
2866 encode_compound_hdr(xdr, req, &hdr);
2867 encode_sequence(xdr, &args->seq_args, &hdr);
2868 encode_putrootfh(xdr, &hdr);
2869 encode_secinfo_no_name(xdr, args, &hdr);
2870 encode_nops(&hdr);
2871 return 0;
2872}
Bryan Schumaker7d974792011-06-02 14:59:08 -04002873
2874/*
2875 * Encode TEST_STATEID request
2876 */
2877static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2878 struct xdr_stream *xdr,
2879 struct nfs41_test_stateid_args *args)
2880{
2881 struct compound_hdr hdr = {
2882 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2883 };
2884
2885 encode_compound_hdr(xdr, req, &hdr);
2886 encode_sequence(xdr, &args->seq_args, &hdr);
2887 encode_test_stateid(xdr, args, &hdr);
2888 encode_nops(&hdr);
2889}
Bryan Schumaker9aeda352011-06-02 14:59:09 -04002890
2891/*
2892 * Encode FREE_STATEID request
2893 */
2894static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
2895 struct xdr_stream *xdr,
2896 struct nfs41_free_stateid_args *args)
2897{
2898 struct compound_hdr hdr = {
2899 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2900 };
2901
2902 encode_compound_hdr(xdr, req, &hdr);
2903 encode_sequence(xdr, &args->seq_args, &hdr);
2904 encode_free_stateid(xdr, args, &hdr);
2905 encode_nops(&hdr);
2906}
Benny Halevy99fe60d2009-04-01 09:22:29 -04002907#endif /* CONFIG_NFS_V4_1 */
2908
Benny Halevy686841b2009-08-14 17:19:48 +03002909static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2910{
2911 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2912 "Remaining buffer length is %tu words.\n",
2913 func, xdr->end - xdr->p);
2914}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002915
Trond Myklebust683b57b2006-06-09 09:34:22 -04002916static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002917{
Al Viro8687b632006-10-19 23:28:48 -07002918 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002919
Benny Halevyc0eae662009-08-14 17:20:14 +03002920 p = xdr_inline_decode(xdr, 4);
2921 if (unlikely(!p))
2922 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03002923 *len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03002924 p = xdr_inline_decode(xdr, *len);
2925 if (unlikely(!p))
2926 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002927 *string = (char *)p;
2928 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03002929out_overflow:
2930 print_overflow_msg(__func__, xdr);
2931 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002932}
2933
2934static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2935{
Al Viro8687b632006-10-19 23:28:48 -07002936 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002937
Benny Halevyc0eae662009-08-14 17:20:14 +03002938 p = xdr_inline_decode(xdr, 8);
2939 if (unlikely(!p))
2940 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03002941 hdr->status = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03002942 hdr->taglen = be32_to_cpup(p);
Andy Adamson6c0195a2008-12-23 16:06:15 -05002943
Benny Halevyc0eae662009-08-14 17:20:14 +03002944 p = xdr_inline_decode(xdr, hdr->taglen + 4);
2945 if (unlikely(!p))
2946 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002947 hdr->tag = (char *)p;
2948 p += XDR_QUADLEN(hdr->taglen);
Benny Halevycccddf42009-08-14 17:20:19 +03002949 hdr->nops = be32_to_cpup(p);
Benny Halevyaadf6152008-12-23 16:06:13 -05002950 if (unlikely(hdr->nops < 1))
2951 return nfs4_stat_to_errno(hdr->status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002952 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03002953out_overflow:
2954 print_overflow_msg(__func__, xdr);
2955 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002956}
2957
2958static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2959{
Al Viro8687b632006-10-19 23:28:48 -07002960 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002961 uint32_t opnum;
2962 int32_t nfserr;
2963
Benny Halevyc0eae662009-08-14 17:20:14 +03002964 p = xdr_inline_decode(xdr, 8);
2965 if (unlikely(!p))
2966 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03002967 opnum = be32_to_cpup(p++);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002968 if (opnum != expected) {
Chuck Leverfe82a182007-09-11 18:01:10 -04002969 dprintk("nfs: Server returned operation"
2970 " %d but we issued a request for %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07002971 opnum, expected);
2972 return -EIO;
2973 }
Benny Halevycccddf42009-08-14 17:20:19 +03002974 nfserr = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002975 if (nfserr != NFS_OK)
Benny Halevy856dff32008-03-31 17:39:06 +03002976 return nfs4_stat_to_errno(nfserr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002977 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03002978out_overflow:
2979 print_overflow_msg(__func__, xdr);
2980 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002981}
2982
2983/* Dummy routine */
David Howellsadfa6f92006-08-22 20:06:08 -04002984static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002985{
Al Viro8687b632006-10-19 23:28:48 -07002986 __be32 *p;
Trond Myklebust683b57b2006-06-09 09:34:22 -04002987 unsigned int strlen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002988 char *str;
2989
Benny Halevyc0eae662009-08-14 17:20:14 +03002990 p = xdr_inline_decode(xdr, 12);
2991 if (likely(p))
2992 return decode_opaque_inline(xdr, &strlen, &str);
2993 print_overflow_msg(__func__, xdr);
2994 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002995}
2996
2997static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2998{
Al Viro8687b632006-10-19 23:28:48 -07002999 uint32_t bmlen;
3000 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003001
Benny Halevyc0eae662009-08-14 17:20:14 +03003002 p = xdr_inline_decode(xdr, 4);
3003 if (unlikely(!p))
3004 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003005 bmlen = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003006
Fred Isamandae100c2011-07-30 20:52:37 -04003007 bitmap[0] = bitmap[1] = bitmap[2] = 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003008 p = xdr_inline_decode(xdr, (bmlen << 2));
3009 if (unlikely(!p))
3010 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003011 if (bmlen > 0) {
Benny Halevy6f723f72009-08-14 17:19:37 +03003012 bitmap[0] = be32_to_cpup(p++);
Fred Isamandae100c2011-07-30 20:52:37 -04003013 if (bmlen > 1) {
3014 bitmap[1] = be32_to_cpup(p++);
3015 if (bmlen > 2)
3016 bitmap[2] = be32_to_cpup(p);
3017 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003018 }
3019 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003020out_overflow:
3021 print_overflow_msg(__func__, xdr);
3022 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003023}
3024
Al Viro8687b632006-10-19 23:28:48 -07003025static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003026{
Al Viro8687b632006-10-19 23:28:48 -07003027 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003028
Benny Halevyc0eae662009-08-14 17:20:14 +03003029 p = xdr_inline_decode(xdr, 4);
3030 if (unlikely(!p))
3031 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003032 *attrlen = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003033 *savep = xdr->p;
3034 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003035out_overflow:
3036 print_overflow_msg(__func__, xdr);
3037 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003038}
3039
3040static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3041{
3042 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
Roman Borisov3388bff2010-10-13 16:54:51 +04003043 int ret;
3044 ret = decode_attr_bitmap(xdr, bitmask);
3045 if (unlikely(ret < 0))
3046 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003047 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3048 } else
Fred Isamandae100c2011-07-30 20:52:37 -04003049 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3050 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3051 bitmask[0], bitmask[1], bitmask[2]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003052 return 0;
3053}
3054
3055static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3056{
Al Viro8687b632006-10-19 23:28:48 -07003057 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003058 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003059
3060 *type = 0;
3061 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3062 return -EIO;
3063 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003064 p = xdr_inline_decode(xdr, 4);
3065 if (unlikely(!p))
3066 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003067 *type = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003068 if (*type < NF4REG || *type > NF4NAMEDATTR) {
Harvey Harrison3110ff82008-05-02 13:42:44 -07003069 dprintk("%s: bad type %d\n", __func__, *type);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003070 return -EIO;
3071 }
3072 bitmap[0] &= ~FATTR4_WORD0_TYPE;
Trond Myklebust409924e2009-03-11 14:10:27 -04003073 ret = NFS_ATTR_FATTR_TYPE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003074 }
Trond Myklebustbca79472009-03-11 14:10:26 -04003075 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
Trond Myklebust409924e2009-03-11 14:10:27 -04003076 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003077out_overflow:
3078 print_overflow_msg(__func__, xdr);
3079 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003080}
3081
Chuck Lever264e6352012-03-01 17:02:05 -05003082static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3083 uint32_t *bitmap, uint32_t *type)
3084{
3085 __be32 *p;
3086
3087 *type = 0;
3088 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3089 return -EIO;
3090 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3091 p = xdr_inline_decode(xdr, 4);
3092 if (unlikely(!p))
3093 goto out_overflow;
3094 *type = be32_to_cpup(p);
3095 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3096 }
3097 dprintk("%s: expire type=0x%x\n", __func__, *type);
3098 return 0;
3099out_overflow:
3100 print_overflow_msg(__func__, xdr);
3101 return -EIO;
3102}
3103
Linus Torvalds1da177e2005-04-16 15:20:36 -07003104static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3105{
Al Viro8687b632006-10-19 23:28:48 -07003106 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003107 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003108
3109 *change = 0;
3110 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3111 return -EIO;
3112 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003113 p = xdr_inline_decode(xdr, 8);
3114 if (unlikely(!p))
3115 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003116 xdr_decode_hyper(p, change);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003117 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
Trond Myklebust409924e2009-03-11 14:10:27 -04003118 ret = NFS_ATTR_FATTR_CHANGE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003119 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003120 dprintk("%s: change attribute=%Lu\n", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003121 (unsigned long long)*change);
Trond Myklebust409924e2009-03-11 14:10:27 -04003122 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003123out_overflow:
3124 print_overflow_msg(__func__, xdr);
3125 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003126}
3127
3128static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3129{
Al Viro8687b632006-10-19 23:28:48 -07003130 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003131 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003132
3133 *size = 0;
3134 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3135 return -EIO;
3136 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003137 p = xdr_inline_decode(xdr, 8);
3138 if (unlikely(!p))
3139 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003140 xdr_decode_hyper(p, size);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003141 bitmap[0] &= ~FATTR4_WORD0_SIZE;
Trond Myklebust409924e2009-03-11 14:10:27 -04003142 ret = NFS_ATTR_FATTR_SIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003143 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003144 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
Trond Myklebust409924e2009-03-11 14:10:27 -04003145 return ret;
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_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3152{
Al Viro8687b632006-10-19 23:28:48 -07003153 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003154
3155 *res = 0;
3156 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3157 return -EIO;
3158 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003159 p = xdr_inline_decode(xdr, 4);
3160 if (unlikely(!p))
3161 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003162 *res = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003163 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3164 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003165 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003166 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003167out_overflow:
3168 print_overflow_msg(__func__, xdr);
3169 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003170}
3171
3172static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3173{
Al Viro8687b632006-10-19 23:28:48 -07003174 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003175
3176 *res = 0;
3177 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3178 return -EIO;
3179 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003180 p = xdr_inline_decode(xdr, 4);
3181 if (unlikely(!p))
3182 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003183 *res = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003184 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3185 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003186 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003187 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003188out_overflow:
3189 print_overflow_msg(__func__, xdr);
3190 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003191}
3192
Trond Myklebust8b4bdcf2006-06-09 09:34:19 -04003193static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003194{
Al Viro8687b632006-10-19 23:28:48 -07003195 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003196 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003197
3198 fsid->major = 0;
3199 fsid->minor = 0;
3200 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3201 return -EIO;
3202 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003203 p = xdr_inline_decode(xdr, 16);
3204 if (unlikely(!p))
3205 goto out_overflow;
Benny Halevy3ceb4db2009-08-14 17:19:41 +03003206 p = xdr_decode_hyper(p, &fsid->major);
Benny Halevycccddf42009-08-14 17:20:19 +03003207 xdr_decode_hyper(p, &fsid->minor);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003208 bitmap[0] &= ~FATTR4_WORD0_FSID;
Trond Myklebust409924e2009-03-11 14:10:27 -04003209 ret = NFS_ATTR_FATTR_FSID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003210 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003211 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003212 (unsigned long long)fsid->major,
3213 (unsigned long long)fsid->minor);
Trond Myklebust409924e2009-03-11 14:10:27 -04003214 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003215out_overflow:
3216 print_overflow_msg(__func__, xdr);
3217 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003218}
3219
3220static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3221{
Al Viro8687b632006-10-19 23:28:48 -07003222 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003223
3224 *res = 60;
3225 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3226 return -EIO;
3227 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003228 p = xdr_inline_decode(xdr, 4);
3229 if (unlikely(!p))
3230 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003231 *res = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003232 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3233 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003234 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003235 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003236out_overflow:
3237 print_overflow_msg(__func__, xdr);
3238 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003239}
3240
Trond Myklebustee7b75f2011-06-16 13:15:41 -04003241static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
Bryan Schumakerae42c702010-10-21 16:33:17 -04003242{
3243 __be32 *p;
3244
3245 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3246 return -EIO;
3247 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3248 p = xdr_inline_decode(xdr, 4);
3249 if (unlikely(!p))
3250 goto out_overflow;
3251 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
Trond Myklebustee7b75f2011-06-16 13:15:41 -04003252 *res = -be32_to_cpup(p);
Bryan Schumakerae42c702010-10-21 16:33:17 -04003253 }
3254 return 0;
3255out_overflow:
3256 print_overflow_msg(__func__, xdr);
3257 return -EIO;
3258}
3259
3260static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3261{
3262 __be32 *p;
3263 int len;
3264
Trond Myklebust7ad07352010-10-23 15:34:20 -04003265 if (fh != NULL)
3266 memset(fh, 0, sizeof(*fh));
Bryan Schumakerae42c702010-10-21 16:33:17 -04003267
3268 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3269 return -EIO;
3270 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3271 p = xdr_inline_decode(xdr, 4);
3272 if (unlikely(!p))
3273 goto out_overflow;
3274 len = be32_to_cpup(p);
3275 if (len > NFS4_FHSIZE)
3276 return -EIO;
Bryan Schumakerae42c702010-10-21 16:33:17 -04003277 p = xdr_inline_decode(xdr, len);
3278 if (unlikely(!p))
3279 goto out_overflow;
Trond Myklebust7ad07352010-10-23 15:34:20 -04003280 if (fh != NULL) {
3281 memcpy(fh->data, p, len);
3282 fh->size = len;
3283 }
Bryan Schumakerae42c702010-10-21 16:33:17 -04003284 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3285 }
3286 return 0;
3287out_overflow:
3288 print_overflow_msg(__func__, xdr);
3289 return -EIO;
3290}
3291
Linus Torvalds1da177e2005-04-16 15:20:36 -07003292static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3293{
Al Viro8687b632006-10-19 23:28:48 -07003294 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003295
3296 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3297 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3298 return -EIO;
3299 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003300 p = xdr_inline_decode(xdr, 4);
3301 if (unlikely(!p))
3302 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003303 *res = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003304 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3305 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003306 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003307 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003308out_overflow:
3309 print_overflow_msg(__func__, xdr);
3310 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003311}
3312
3313static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3314{
Al Viro8687b632006-10-19 23:28:48 -07003315 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003316 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003317
3318 *fileid = 0;
3319 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3320 return -EIO;
3321 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003322 p = xdr_inline_decode(xdr, 8);
3323 if (unlikely(!p))
3324 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003325 xdr_decode_hyper(p, fileid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003326 bitmap[0] &= ~FATTR4_WORD0_FILEID;
Trond Myklebust409924e2009-03-11 14:10:27 -04003327 ret = NFS_ATTR_FATTR_FILEID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003328 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003329 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
Trond Myklebust409924e2009-03-11 14:10:27 -04003330 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003331out_overflow:
3332 print_overflow_msg(__func__, xdr);
3333 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003334}
3335
Manoj Naik99baf622006-06-09 09:34:24 -04003336static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3337{
Al Viro8687b632006-10-19 23:28:48 -07003338 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003339 int ret = 0;
Manoj Naik99baf622006-06-09 09:34:24 -04003340
3341 *fileid = 0;
3342 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3343 return -EIO;
3344 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003345 p = xdr_inline_decode(xdr, 8);
3346 if (unlikely(!p))
3347 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003348 xdr_decode_hyper(p, fileid);
Manoj Naik99baf622006-06-09 09:34:24 -04003349 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
Trond Myklebust28331a42011-04-27 13:47:52 -04003350 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
Manoj Naik99baf622006-06-09 09:34:24 -04003351 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003352 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
Trond Myklebust409924e2009-03-11 14:10:27 -04003353 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003354out_overflow:
3355 print_overflow_msg(__func__, xdr);
3356 return -EIO;
Manoj Naik99baf622006-06-09 09:34:24 -04003357}
3358
Linus Torvalds1da177e2005-04-16 15:20:36 -07003359static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3360{
Al Viro8687b632006-10-19 23:28:48 -07003361 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003362 int status = 0;
3363
3364 *res = 0;
3365 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3366 return -EIO;
3367 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003368 p = xdr_inline_decode(xdr, 8);
3369 if (unlikely(!p))
3370 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003371 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003372 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3373 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003374 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003375 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003376out_overflow:
3377 print_overflow_msg(__func__, xdr);
3378 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003379}
3380
3381static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3382{
Al Viro8687b632006-10-19 23:28:48 -07003383 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003384 int status = 0;
3385
3386 *res = 0;
3387 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3388 return -EIO;
3389 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003390 p = xdr_inline_decode(xdr, 8);
3391 if (unlikely(!p))
3392 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003393 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003394 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3395 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003396 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003397 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003398out_overflow:
3399 print_overflow_msg(__func__, xdr);
3400 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003401}
3402
3403static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3404{
Al Viro8687b632006-10-19 23:28:48 -07003405 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003406 int status = 0;
3407
3408 *res = 0;
3409 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3410 return -EIO;
3411 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003412 p = xdr_inline_decode(xdr, 8);
3413 if (unlikely(!p))
3414 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003415 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003416 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3417 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003418 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003419 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003420out_overflow:
3421 print_overflow_msg(__func__, xdr);
3422 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003423}
3424
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003425static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3426{
Chuck Lever464ad6b2007-10-26 13:32:08 -04003427 u32 n;
Al Viro8687b632006-10-19 23:28:48 -07003428 __be32 *p;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003429 int status = 0;
3430
Benny Halevyc0eae662009-08-14 17:20:14 +03003431 p = xdr_inline_decode(xdr, 4);
3432 if (unlikely(!p))
3433 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003434 n = be32_to_cpup(p);
Andy Adamson33a43f22006-06-09 09:34:30 -04003435 if (n == 0)
3436 goto root_path;
Chuck Lever02a29762012-03-01 17:00:31 -05003437 dprintk("pathname4: ");
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003438 path->ncomponents = 0;
3439 while (path->ncomponents < n) {
3440 struct nfs4_string *component = &path->components[path->ncomponents];
3441 status = decode_opaque_inline(xdr, &component->len, &component->data);
3442 if (unlikely(status != 0))
3443 goto out_eio;
Trond Myklebust95a13f7b2012-03-14 21:55:01 -04003444 ifdebug (XDR)
Chuck Lever02a29762012-03-01 17:00:31 -05003445 pr_cont("%s%.*s ",
3446 (path->ncomponents != n ? "/ " : ""),
3447 component->len, component->data);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003448 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
3449 path->ncomponents++;
3450 else {
3451 dprintk("cannot parse %d components in path\n", n);
3452 goto out_eio;
3453 }
3454 }
3455out:
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003456 return status;
Andy Adamson33a43f22006-06-09 09:34:30 -04003457root_path:
3458/* a root pathname is sent as a zero component4 */
3459 path->ncomponents = 1;
3460 path->components[0].len=0;
3461 path->components[0].data=NULL;
Chuck Lever02a29762012-03-01 17:00:31 -05003462 dprintk("pathname4: /\n");
Andy Adamson33a43f22006-06-09 09:34:30 -04003463 goto out;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003464out_eio:
3465 dprintk(" status %d", status);
3466 status = -EIO;
3467 goto out;
Benny Halevyc0eae662009-08-14 17:20:14 +03003468out_overflow:
3469 print_overflow_msg(__func__, xdr);
3470 return -EIO;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003471}
3472
3473static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
Trond Myklebust683b57b2006-06-09 09:34:22 -04003474{
3475 int n;
Al Viro8687b632006-10-19 23:28:48 -07003476 __be32 *p;
Trond Myklebust683b57b2006-06-09 09:34:22 -04003477 int status = -EIO;
3478
3479 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3480 goto out;
3481 status = 0;
3482 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3483 goto out;
Trond Myklebust8b7e3f42012-01-30 15:43:56 -05003484 status = -EIO;
3485 /* Ignore borken servers that return unrequested attrs */
3486 if (unlikely(res == NULL))
3487 goto out;
Chuck Lever02a29762012-03-01 17:00:31 -05003488 dprintk("%s: fsroot:\n", __func__);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003489 status = decode_pathname(xdr, &res->fs_path);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003490 if (unlikely(status != 0))
3491 goto out;
Benny Halevyc0eae662009-08-14 17:20:14 +03003492 p = xdr_inline_decode(xdr, 4);
3493 if (unlikely(!p))
3494 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003495 n = be32_to_cpup(p);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003496 if (n <= 0)
3497 goto out_eio;
3498 res->nlocations = 0;
3499 while (res->nlocations < n) {
Chuck Lever464ad6b2007-10-26 13:32:08 -04003500 u32 m;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003501 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
Trond Myklebust683b57b2006-06-09 09:34:22 -04003502
Benny Halevyc0eae662009-08-14 17:20:14 +03003503 p = xdr_inline_decode(xdr, 4);
3504 if (unlikely(!p))
3505 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003506 m = be32_to_cpup(p);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003507
3508 loc->nservers = 0;
Chuck Lever02a29762012-03-01 17:00:31 -05003509 dprintk("%s: servers:\n", __func__);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003510 while (loc->nservers < m) {
3511 struct nfs4_string *server = &loc->servers[loc->nservers];
3512 status = decode_opaque_inline(xdr, &server->len, &server->data);
3513 if (unlikely(status != 0))
3514 goto out_eio;
3515 dprintk("%s ", server->data);
3516 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
3517 loc->nservers++;
3518 else {
Chuck Lever464ad6b2007-10-26 13:32:08 -04003519 unsigned int i;
3520 dprintk("%s: using first %u of %u servers "
3521 "returned for location %u\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003522 __func__,
Chuck Lever464ad6b2007-10-26 13:32:08 -04003523 NFS4_FS_LOCATION_MAXSERVERS,
3524 m, res->nlocations);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003525 for (i = loc->nservers; i < m; i++) {
Trond Myklebust2e42c3e2007-05-14 17:20:41 -04003526 unsigned int len;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003527 char *data;
3528 status = decode_opaque_inline(xdr, &len, &data);
3529 if (unlikely(status != 0))
3530 goto out_eio;
3531 }
3532 }
3533 }
3534 status = decode_pathname(xdr, &loc->rootpath);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003535 if (unlikely(status != 0))
3536 goto out_eio;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003537 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
Trond Myklebust683b57b2006-06-09 09:34:22 -04003538 res->nlocations++;
3539 }
Trond Myklebust409924e2009-03-11 14:10:27 -04003540 if (res->nlocations != 0)
Chuck Lever81934dd2012-03-01 17:01:57 -05003541 status = NFS_ATTR_FATTR_V4_LOCATIONS;
Trond Myklebust683b57b2006-06-09 09:34:22 -04003542out:
Harvey Harrison3110ff82008-05-02 13:42:44 -07003543 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003544 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003545out_overflow:
3546 print_overflow_msg(__func__, xdr);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003547out_eio:
3548 status = -EIO;
3549 goto out;
3550}
3551
Linus Torvalds1da177e2005-04-16 15:20:36 -07003552static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3553{
Al Viro8687b632006-10-19 23:28:48 -07003554 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003555 int status = 0;
3556
3557 *res = 0;
3558 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3559 return -EIO;
3560 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003561 p = xdr_inline_decode(xdr, 8);
3562 if (unlikely(!p))
3563 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003564 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003565 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3566 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003567 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003568 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003569out_overflow:
3570 print_overflow_msg(__func__, xdr);
3571 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003572}
3573
3574static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3575{
Al Viro8687b632006-10-19 23:28:48 -07003576 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003577 int status = 0;
3578
3579 *maxlink = 1;
3580 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3581 return -EIO;
3582 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003583 p = xdr_inline_decode(xdr, 4);
3584 if (unlikely(!p))
3585 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003586 *maxlink = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003587 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3588 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003589 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003590 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003591out_overflow:
3592 print_overflow_msg(__func__, xdr);
3593 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003594}
3595
3596static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3597{
Al Viro8687b632006-10-19 23:28:48 -07003598 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003599 int status = 0;
3600
3601 *maxname = 1024;
3602 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3603 return -EIO;
3604 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003605 p = xdr_inline_decode(xdr, 4);
3606 if (unlikely(!p))
3607 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003608 *maxname = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003609 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3610 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003611 dprintk("%s: maxname=%u\n", __func__, *maxname);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003612 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003613out_overflow:
3614 print_overflow_msg(__func__, xdr);
3615 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003616}
3617
3618static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3619{
Al Viro8687b632006-10-19 23:28:48 -07003620 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003621 int status = 0;
3622
3623 *res = 1024;
3624 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3625 return -EIO;
3626 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3627 uint64_t maxread;
Benny Halevyc0eae662009-08-14 17:20:14 +03003628 p = xdr_inline_decode(xdr, 8);
3629 if (unlikely(!p))
3630 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003631 xdr_decode_hyper(p, &maxread);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003632 if (maxread > 0x7FFFFFFF)
3633 maxread = 0x7FFFFFFF;
3634 *res = (uint32_t)maxread;
3635 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3636 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003637 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003638 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003639out_overflow:
3640 print_overflow_msg(__func__, xdr);
3641 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003642}
3643
3644static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3645{
Al Viro8687b632006-10-19 23:28:48 -07003646 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003647 int status = 0;
3648
3649 *res = 1024;
3650 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3651 return -EIO;
3652 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3653 uint64_t maxwrite;
Benny Halevyc0eae662009-08-14 17:20:14 +03003654 p = xdr_inline_decode(xdr, 8);
3655 if (unlikely(!p))
3656 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003657 xdr_decode_hyper(p, &maxwrite);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003658 if (maxwrite > 0x7FFFFFFF)
3659 maxwrite = 0x7FFFFFFF;
3660 *res = (uint32_t)maxwrite;
3661 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3662 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003663 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003664 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003665out_overflow:
3666 print_overflow_msg(__func__, xdr);
3667 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003668}
3669
Trond Myklebustbca79472009-03-11 14:10:26 -04003670static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003671{
Trond Myklebustbca79472009-03-11 14:10:26 -04003672 uint32_t tmp;
Al Viro8687b632006-10-19 23:28:48 -07003673 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003674 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003675
3676 *mode = 0;
3677 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3678 return -EIO;
3679 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003680 p = xdr_inline_decode(xdr, 4);
3681 if (unlikely(!p))
3682 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003683 tmp = be32_to_cpup(p);
Trond Myklebustbca79472009-03-11 14:10:26 -04003684 *mode = tmp & ~S_IFMT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003685 bitmap[1] &= ~FATTR4_WORD1_MODE;
Trond Myklebust409924e2009-03-11 14:10:27 -04003686 ret = NFS_ATTR_FATTR_MODE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003687 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003688 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
Trond Myklebust409924e2009-03-11 14:10:27 -04003689 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003690out_overflow:
3691 print_overflow_msg(__func__, xdr);
3692 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003693}
3694
3695static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3696{
Al Viro8687b632006-10-19 23:28:48 -07003697 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003698 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003699
3700 *nlink = 1;
3701 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3702 return -EIO;
3703 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003704 p = xdr_inline_decode(xdr, 4);
3705 if (unlikely(!p))
3706 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003707 *nlink = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003708 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
Trond Myklebust409924e2009-03-11 14:10:27 -04003709 ret = NFS_ATTR_FATTR_NLINK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003710 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003711 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
Trond Myklebust409924e2009-03-11 14:10:27 -04003712 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003713out_overflow:
3714 print_overflow_msg(__func__, xdr);
3715 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003716}
3717
Trond Myklebust80e52ac2009-08-09 15:06:19 -04003718static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
Trond Myklebust6926afd2012-01-07 13:22:46 -05003719 const struct nfs_server *server, uint32_t *uid,
3720 struct nfs4_string *owner_name)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003721{
Al Viro8687b632006-10-19 23:28:48 -07003722 uint32_t len;
3723 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003724 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003725
3726 *uid = -2;
3727 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3728 return -EIO;
3729 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003730 p = xdr_inline_decode(xdr, 4);
3731 if (unlikely(!p))
3732 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003733 len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03003734 p = xdr_inline_decode(xdr, len);
3735 if (unlikely(!p))
3736 goto out_overflow;
Trond Myklebust6926afd2012-01-07 13:22:46 -05003737 if (owner_name != NULL) {
3738 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3739 if (owner_name->data != NULL) {
3740 owner_name->len = len;
3741 ret = NFS_ATTR_FATTR_OWNER_NAME;
3742 }
Trond Myklebust80e52ac2009-08-09 15:06:19 -04003743 } else if (len < XDR_MAX_NETOBJ) {
Trond Myklebuste4fd72a2011-02-22 15:44:31 -08003744 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
Trond Myklebust409924e2009-03-11 14:10:27 -04003745 ret = NFS_ATTR_FATTR_OWNER;
3746 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07003747 dprintk("%s: nfs_map_name_to_uid failed!\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003748 __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003749 } else
Chuck Leverfe82a182007-09-11 18:01:10 -04003750 dprintk("%s: name too long (%u)!\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003751 __func__, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003752 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3753 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003754 dprintk("%s: uid=%d\n", __func__, (int)*uid);
Trond Myklebust409924e2009-03-11 14:10:27 -04003755 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003756out_overflow:
3757 print_overflow_msg(__func__, xdr);
3758 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003759}
3760
Trond Myklebust80e52ac2009-08-09 15:06:19 -04003761static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
Trond Myklebust6926afd2012-01-07 13:22:46 -05003762 const struct nfs_server *server, uint32_t *gid,
3763 struct nfs4_string *group_name)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003764{
Al Viro8687b632006-10-19 23:28:48 -07003765 uint32_t len;
3766 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003767 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003768
3769 *gid = -2;
3770 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3771 return -EIO;
3772 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003773 p = xdr_inline_decode(xdr, 4);
3774 if (unlikely(!p))
3775 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003776 len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03003777 p = xdr_inline_decode(xdr, len);
3778 if (unlikely(!p))
3779 goto out_overflow;
Trond Myklebust6926afd2012-01-07 13:22:46 -05003780 if (group_name != NULL) {
3781 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3782 if (group_name->data != NULL) {
3783 group_name->len = len;
3784 ret = NFS_ATTR_FATTR_GROUP_NAME;
3785 }
Trond Myklebust80e52ac2009-08-09 15:06:19 -04003786 } else if (len < XDR_MAX_NETOBJ) {
Trond Myklebuste4fd72a2011-02-22 15:44:31 -08003787 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
Trond Myklebust409924e2009-03-11 14:10:27 -04003788 ret = NFS_ATTR_FATTR_GROUP;
3789 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07003790 dprintk("%s: nfs_map_group_to_gid failed!\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003791 __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003792 } else
Chuck Leverfe82a182007-09-11 18:01:10 -04003793 dprintk("%s: name too long (%u)!\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003794 __func__, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003795 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3796 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003797 dprintk("%s: gid=%d\n", __func__, (int)*gid);
Trond Myklebust409924e2009-03-11 14:10:27 -04003798 return ret;
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
3804static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3805{
Al Viro8687b632006-10-19 23:28:48 -07003806 uint32_t major = 0, minor = 0;
3807 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003808 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003809
3810 *rdev = MKDEV(0,0);
3811 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3812 return -EIO;
3813 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3814 dev_t tmp;
3815
Benny Halevyc0eae662009-08-14 17:20:14 +03003816 p = xdr_inline_decode(xdr, 8);
3817 if (unlikely(!p))
3818 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03003819 major = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03003820 minor = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003821 tmp = MKDEV(major, minor);
3822 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3823 *rdev = tmp;
3824 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
Trond Myklebust409924e2009-03-11 14:10:27 -04003825 ret = NFS_ATTR_FATTR_RDEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003826 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003827 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
Trond Myklebust409924e2009-03-11 14:10:27 -04003828 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003829out_overflow:
3830 print_overflow_msg(__func__, xdr);
3831 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003832}
3833
3834static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3835{
Al Viro8687b632006-10-19 23:28:48 -07003836 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003837 int status = 0;
3838
3839 *res = 0;
3840 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3841 return -EIO;
3842 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003843 p = xdr_inline_decode(xdr, 8);
3844 if (unlikely(!p))
3845 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003846 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003847 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3848 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003849 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003850 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003851out_overflow:
3852 print_overflow_msg(__func__, xdr);
3853 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003854}
3855
3856static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3857{
Al Viro8687b632006-10-19 23:28:48 -07003858 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003859 int status = 0;
3860
3861 *res = 0;
3862 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3863 return -EIO;
3864 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003865 p = xdr_inline_decode(xdr, 8);
3866 if (unlikely(!p))
3867 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003868 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003869 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3870 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003871 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003872 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003873out_overflow:
3874 print_overflow_msg(__func__, xdr);
3875 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003876}
3877
3878static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3879{
Al Viro8687b632006-10-19 23:28:48 -07003880 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003881 int status = 0;
3882
3883 *res = 0;
3884 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3885 return -EIO;
3886 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003887 p = xdr_inline_decode(xdr, 8);
3888 if (unlikely(!p))
3889 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003890 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003891 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3892 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003893 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003894 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003895out_overflow:
3896 print_overflow_msg(__func__, xdr);
3897 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003898}
3899
3900static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3901{
Al Viro8687b632006-10-19 23:28:48 -07003902 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003903 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003904
3905 *used = 0;
3906 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3907 return -EIO;
3908 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003909 p = xdr_inline_decode(xdr, 8);
3910 if (unlikely(!p))
3911 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003912 xdr_decode_hyper(p, used);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003913 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
Trond Myklebust409924e2009-03-11 14:10:27 -04003914 ret = NFS_ATTR_FATTR_SPACE_USED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003915 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003916 dprintk("%s: space used=%Lu\n", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003917 (unsigned long long)*used);
Trond Myklebust409924e2009-03-11 14:10:27 -04003918 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003919out_overflow:
3920 print_overflow_msg(__func__, xdr);
3921 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003922}
3923
3924static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3925{
Al Viro8687b632006-10-19 23:28:48 -07003926 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003927 uint64_t sec;
3928 uint32_t nsec;
3929
Benny Halevyc0eae662009-08-14 17:20:14 +03003930 p = xdr_inline_decode(xdr, 12);
3931 if (unlikely(!p))
3932 goto out_overflow;
Benny Halevy3ceb4db2009-08-14 17:19:41 +03003933 p = xdr_decode_hyper(p, &sec);
Benny Halevycccddf42009-08-14 17:20:19 +03003934 nsec = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003935 time->tv_sec = (time_t)sec;
3936 time->tv_nsec = (long)nsec;
3937 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003938out_overflow:
3939 print_overflow_msg(__func__, xdr);
3940 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003941}
3942
3943static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3944{
3945 int status = 0;
3946
3947 time->tv_sec = 0;
3948 time->tv_nsec = 0;
3949 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
3950 return -EIO;
3951 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
3952 status = decode_attr_time(xdr, time);
Trond Myklebust409924e2009-03-11 14:10:27 -04003953 if (status == 0)
3954 status = NFS_ATTR_FATTR_ATIME;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003955 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
3956 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003957 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003958 return status;
3959}
3960
3961static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3962{
3963 int status = 0;
3964
3965 time->tv_sec = 0;
3966 time->tv_nsec = 0;
3967 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
3968 return -EIO;
3969 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
3970 status = decode_attr_time(xdr, time);
Trond Myklebust409924e2009-03-11 14:10:27 -04003971 if (status == 0)
3972 status = NFS_ATTR_FATTR_CTIME;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003973 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
3974 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003975 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003976 return status;
3977}
3978
Ricardo Labiaga55b6e772010-10-12 16:30:06 -07003979static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
3980 struct timespec *time)
3981{
3982 int status = 0;
3983
3984 time->tv_sec = 0;
3985 time->tv_nsec = 0;
3986 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
3987 return -EIO;
3988 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
3989 status = decode_attr_time(xdr, time);
3990 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
3991 }
3992 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
3993 (long)time->tv_nsec);
3994 return status;
3995}
3996
Linus Torvalds1da177e2005-04-16 15:20:36 -07003997static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3998{
3999 int status = 0;
4000
4001 time->tv_sec = 0;
4002 time->tv_nsec = 0;
4003 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4004 return -EIO;
4005 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4006 status = decode_attr_time(xdr, time);
Trond Myklebust409924e2009-03-11 14:10:27 -04004007 if (status == 0)
4008 status = NFS_ATTR_FATTR_MTIME;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004009 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4010 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07004011 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004012 return status;
4013}
4014
Al Viro8687b632006-10-19 23:28:48 -07004015static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004016{
4017 unsigned int attrwords = XDR_QUADLEN(attrlen);
4018 unsigned int nwords = xdr->p - savep;
4019
4020 if (unlikely(attrwords != nwords)) {
Chuck Leverfe82a182007-09-11 18:01:10 -04004021 dprintk("%s: server returned incorrect attribute length: "
4022 "%u %c %u\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07004023 __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004024 attrwords << 2,
4025 (attrwords < nwords) ? '<' : '>',
4026 nwords << 2);
4027 return -EIO;
4028 }
4029 return 0;
4030}
4031
4032static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4033{
Al Viro8687b632006-10-19 23:28:48 -07004034 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004035
Benny Halevyc0eae662009-08-14 17:20:14 +03004036 p = xdr_inline_decode(xdr, 20);
4037 if (unlikely(!p))
4038 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004039 cinfo->atomic = be32_to_cpup(p++);
Benny Halevy3ceb4db2009-08-14 17:19:41 +03004040 p = xdr_decode_hyper(p, &cinfo->before);
Benny Halevycccddf42009-08-14 17:20:19 +03004041 xdr_decode_hyper(p, &cinfo->after);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004042 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004043out_overflow:
4044 print_overflow_msg(__func__, xdr);
4045 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004046}
4047
4048static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
4049{
Al Viro8687b632006-10-19 23:28:48 -07004050 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004051 uint32_t supp, acc;
4052 int status;
4053
4054 status = decode_op_hdr(xdr, OP_ACCESS);
4055 if (status)
4056 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004057 p = xdr_inline_decode(xdr, 8);
4058 if (unlikely(!p))
4059 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004060 supp = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03004061 acc = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004062 access->supported = supp;
4063 access->access = acc;
4064 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004065out_overflow:
4066 print_overflow_msg(__func__, xdr);
4067 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004068}
4069
Benny Halevy07d30432009-08-14 17:19:52 +03004070static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004071{
Al Viro8687b632006-10-19 23:28:48 -07004072 __be32 *p;
Benny Halevy07d30432009-08-14 17:19:52 +03004073
4074 p = xdr_inline_decode(xdr, len);
4075 if (likely(p)) {
4076 memcpy(buf, p, len);
4077 return 0;
4078 }
4079 print_overflow_msg(__func__, xdr);
4080 return -EIO;
4081}
4082
4083static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4084{
Trond Myklebust2d2f24a2012-03-04 18:13:57 -05004085 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004086}
4087
4088static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4089{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004090 int status;
4091
4092 status = decode_op_hdr(xdr, OP_CLOSE);
Trond Myklebustc1d51932008-04-07 13:20:54 -04004093 if (status != -EIO)
4094 nfs_increment_open_seqid(status, res->seqid);
Benny Halevy07d30432009-08-14 17:19:52 +03004095 if (!status)
4096 status = decode_stateid(xdr, &res->stateid);
4097 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004098}
4099
Benny Halevydb942bb2009-08-14 17:19:56 +03004100static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4101{
Chuck Levercd937102012-03-02 17:14:31 -05004102 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004103}
4104
4105static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
4106{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004107 int status;
4108
4109 status = decode_op_hdr(xdr, OP_COMMIT);
Benny Halevydb942bb2009-08-14 17:19:56 +03004110 if (!status)
4111 status = decode_verifier(xdr, res->verf->verifier);
4112 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004113}
4114
4115static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4116{
Al Viro8687b632006-10-19 23:28:48 -07004117 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004118 uint32_t bmlen;
4119 int status;
4120
4121 status = decode_op_hdr(xdr, OP_CREATE);
4122 if (status)
4123 return status;
4124 if ((status = decode_change_info(xdr, cinfo)))
4125 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004126 p = xdr_inline_decode(xdr, 4);
4127 if (unlikely(!p))
4128 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004129 bmlen = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03004130 p = xdr_inline_decode(xdr, bmlen << 2);
4131 if (likely(p))
4132 return 0;
4133out_overflow:
4134 print_overflow_msg(__func__, xdr);
4135 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004136}
4137
4138static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4139{
Al Viro8687b632006-10-19 23:28:48 -07004140 __be32 *savep;
Fred Isamandae100c2011-07-30 20:52:37 -04004141 uint32_t attrlen, bitmap[3] = {0};
Linus Torvalds1da177e2005-04-16 15:20:36 -07004142 int status;
4143
4144 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4145 goto xdr_error;
4146 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4147 goto xdr_error;
4148 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4149 goto xdr_error;
4150 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4151 goto xdr_error;
Chuck Lever264e6352012-03-01 17:02:05 -05004152 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4153 &res->fh_expire_type)) != 0)
4154 goto xdr_error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004155 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4156 goto xdr_error;
4157 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4158 goto xdr_error;
4159 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4160 goto xdr_error;
4161 status = verify_attr_len(xdr, savep, attrlen);
4162xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07004163 dprintk("%s: xdr returned %d!\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004164 return status;
4165}
Andy Adamson6c0195a2008-12-23 16:06:15 -05004166
Linus Torvalds1da177e2005-04-16 15:20:36 -07004167static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4168{
Al Viro8687b632006-10-19 23:28:48 -07004169 __be32 *savep;
Fred Isamandae100c2011-07-30 20:52:37 -04004170 uint32_t attrlen, bitmap[3] = {0};
Linus Torvalds1da177e2005-04-16 15:20:36 -07004171 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05004172
Linus Torvalds1da177e2005-04-16 15:20:36 -07004173 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4174 goto xdr_error;
4175 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4176 goto xdr_error;
4177 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4178 goto xdr_error;
4179
4180 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4181 goto xdr_error;
4182 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4183 goto xdr_error;
4184 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4185 goto xdr_error;
4186 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4187 goto xdr_error;
4188 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4189 goto xdr_error;
4190 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4191 goto xdr_error;
4192
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_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4200{
Al Viro8687b632006-10-19 23:28:48 -07004201 __be32 *savep;
Fred Isamandae100c2011-07-30 20:52:37 -04004202 uint32_t attrlen, bitmap[3] = {0};
Linus Torvalds1da177e2005-04-16 15:20:36 -07004203 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05004204
Linus Torvalds1da177e2005-04-16 15:20:36 -07004205 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4206 goto xdr_error;
4207 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4208 goto xdr_error;
4209 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4210 goto xdr_error;
4211
4212 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4213 goto xdr_error;
4214 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4215 goto xdr_error;
4216
4217 status = verify_attr_len(xdr, savep, attrlen);
4218xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07004219 dprintk("%s: xdr returned %d!\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004220 return status;
4221}
4222
Bryan Schumakerae42c702010-10-21 16:33:17 -04004223static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4224 struct nfs_fattr *fattr, struct nfs_fh *fh,
Trond Myklebust8b7e3f42012-01-30 15:43:56 -05004225 struct nfs4_fs_locations *fs_loc,
Trond Myklebust6926afd2012-01-07 13:22:46 -05004226 const struct nfs_server *server)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004227{
Trond Myklebustbca79472009-03-11 14:10:26 -04004228 int status;
4229 umode_t fmode = 0;
Bryan Schumakerae42c702010-10-21 16:33:17 -04004230 uint32_t type;
Trond Myklebustee7b75f2011-06-16 13:15:41 -04004231 int32_t err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004232
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004233 status = decode_attr_type(xdr, bitmap, &type);
4234 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004235 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004236 fattr->mode = 0;
4237 if (status != 0) {
4238 fattr->mode |= nfs_type2fmt[type];
4239 fattr->valid |= status;
4240 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07004241
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004242 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4243 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004244 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004245 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004246
4247 status = decode_attr_size(xdr, bitmap, &fattr->size);
4248 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004249 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004250 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004251
4252 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4253 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004254 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004255 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004256
Trond Myklebustee7b75f2011-06-16 13:15:41 -04004257 err = 0;
4258 status = decode_attr_error(xdr, bitmap, &err);
Bryan Schumakerae42c702010-10-21 16:33:17 -04004259 if (status < 0)
4260 goto xdr_error;
4261
4262 status = decode_attr_filehandle(xdr, bitmap, fh);
4263 if (status < 0)
4264 goto xdr_error;
4265
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004266 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4267 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004268 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004269 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004270
Trond Myklebust8b7e3f42012-01-30 15:43:56 -05004271 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004272 if (status < 0)
Trond Myklebust683b57b2006-06-09 09:34:22 -04004273 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004274 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004275
4276 status = decode_attr_mode(xdr, bitmap, &fmode);
4277 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004278 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004279 if (status != 0) {
4280 fattr->mode |= fmode;
4281 fattr->valid |= status;
4282 }
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004283
4284 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4285 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004286 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004287 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004288
Trond Myklebust6926afd2012-01-07 13:22:46 -05004289 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004290 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004291 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004292 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004293
Trond Myklebust6926afd2012-01-07 13:22:46 -05004294 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004295 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004296 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004297 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004298
4299 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4300 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004301 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004302 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004303
4304 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4305 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004306 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004307 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004308
4309 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4310 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004311 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004312 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004313
4314 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4315 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004316 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004317 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004318
4319 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4320 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004321 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004322 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004323
Trond Myklebust28331a42011-04-27 13:47:52 -04004324 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004325 if (status < 0)
Manoj Naik99baf622006-06-09 09:34:24 -04004326 goto xdr_error;
Trond Myklebust28331a42011-04-27 13:47:52 -04004327 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004328
Bryan Schumakerae42c702010-10-21 16:33:17 -04004329xdr_error:
4330 dprintk("%s: xdr returned %d\n", __func__, -status);
4331 return status;
4332}
4333
4334static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
Trond Myklebust8b7e3f42012-01-30 15:43:56 -05004335 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4336 const struct nfs_server *server)
Bryan Schumakerae42c702010-10-21 16:33:17 -04004337{
4338 __be32 *savep;
4339 uint32_t attrlen,
Fred Isamandae100c2011-07-30 20:52:37 -04004340 bitmap[3] = {0};
Bryan Schumakerae42c702010-10-21 16:33:17 -04004341 int status;
4342
4343 status = decode_op_hdr(xdr, OP_GETATTR);
4344 if (status < 0)
4345 goto xdr_error;
4346
4347 status = decode_attr_bitmap(xdr, bitmap);
4348 if (status < 0)
4349 goto xdr_error;
4350
4351 status = decode_attr_length(xdr, &attrlen, &savep);
4352 if (status < 0)
4353 goto xdr_error;
4354
Trond Myklebust8b7e3f42012-01-30 15:43:56 -05004355 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc, server);
Bryan Schumakerae42c702010-10-21 16:33:17 -04004356 if (status < 0)
4357 goto xdr_error;
4358
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004359 status = verify_attr_len(xdr, savep, attrlen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004360xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07004361 dprintk("%s: xdr returned %d\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004362 return status;
4363}
4364
Bryan Schumakerae42c702010-10-21 16:33:17 -04004365static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
Trond Myklebust6926afd2012-01-07 13:22:46 -05004366 const struct nfs_server *server)
Bryan Schumakerae42c702010-10-21 16:33:17 -04004367{
Trond Myklebust8b7e3f42012-01-30 15:43:56 -05004368 return decode_getfattr_generic(xdr, fattr, NULL, NULL, server);
Bryan Schumakerae42c702010-10-21 16:33:17 -04004369}
Linus Torvalds1da177e2005-04-16 15:20:36 -07004370
Andy Adamson504913f2010-10-20 00:17:57 -04004371/*
4372 * Decode potentially multiple layout types. Currently we only support
4373 * one layout driver per file system.
4374 */
4375static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4376 uint32_t *layouttype)
4377{
4378 uint32_t *p;
4379 int num;
4380
4381 p = xdr_inline_decode(xdr, 4);
4382 if (unlikely(!p))
4383 goto out_overflow;
4384 num = be32_to_cpup(p);
4385
4386 /* pNFS is not supported by the underlying file system */
4387 if (num == 0) {
4388 *layouttype = 0;
4389 return 0;
4390 }
4391 if (num > 1)
Weston Andros Adamsona0308892012-01-26 13:32:23 -05004392 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
4393 "drivers per filesystem not supported\n", __func__);
Andy Adamson504913f2010-10-20 00:17:57 -04004394
4395 /* Decode and set first layout type, move xdr->p past unused types */
4396 p = xdr_inline_decode(xdr, num * 4);
4397 if (unlikely(!p))
4398 goto out_overflow;
4399 *layouttype = be32_to_cpup(p);
4400 return 0;
4401out_overflow:
4402 print_overflow_msg(__func__, xdr);
4403 return -EIO;
4404}
4405
4406/*
4407 * The type of file system exported.
4408 * Note we must ensure that layouttype is set in any non-error case.
4409 */
4410static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4411 uint32_t *layouttype)
4412{
4413 int status = 0;
4414
4415 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4416 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4417 return -EIO;
4418 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4419 status = decode_first_pnfs_layout_type(xdr, layouttype);
4420 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4421 } else
4422 *layouttype = 0;
4423 return status;
4424}
4425
Fred Isamandae100c2011-07-30 20:52:37 -04004426/*
4427 * The prefered block size for layout directed io
4428 */
4429static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4430 uint32_t *res)
4431{
4432 __be32 *p;
4433
4434 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4435 *res = 0;
4436 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4437 p = xdr_inline_decode(xdr, 4);
4438 if (unlikely(!p)) {
4439 print_overflow_msg(__func__, xdr);
4440 return -EIO;
4441 }
4442 *res = be32_to_cpup(p);
4443 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4444 }
4445 return 0;
4446}
4447
Linus Torvalds1da177e2005-04-16 15:20:36 -07004448static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4449{
Al Viro8687b632006-10-19 23:28:48 -07004450 __be32 *savep;
Fred Isamandae100c2011-07-30 20:52:37 -04004451 uint32_t attrlen, bitmap[3];
Linus Torvalds1da177e2005-04-16 15:20:36 -07004452 int status;
4453
4454 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4455 goto xdr_error;
4456 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4457 goto xdr_error;
4458 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4459 goto xdr_error;
4460
4461 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4462
4463 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4464 goto xdr_error;
4465 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4466 goto xdr_error;
4467 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4468 goto xdr_error;
4469 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4470 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4471 goto xdr_error;
4472 fsinfo->wtpref = fsinfo->wtmax;
Ricardo Labiaga55b6e772010-10-12 16:30:06 -07004473 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4474 if (status != 0)
4475 goto xdr_error;
Andy Adamson504913f2010-10-20 00:17:57 -04004476 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4477 if (status != 0)
4478 goto xdr_error;
Fred Isamandae100c2011-07-30 20:52:37 -04004479 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4480 if (status)
4481 goto xdr_error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004482
4483 status = verify_attr_len(xdr, savep, attrlen);
4484xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07004485 dprintk("%s: xdr returned %d!\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004486 return status;
4487}
4488
4489static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4490{
Al Viro8687b632006-10-19 23:28:48 -07004491 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004492 uint32_t len;
4493 int status;
4494
Trond Myklebust99367812007-07-17 21:52:41 -04004495 /* Zero handle first to allow comparisons */
4496 memset(fh, 0, sizeof(*fh));
4497
Linus Torvalds1da177e2005-04-16 15:20:36 -07004498 status = decode_op_hdr(xdr, OP_GETFH);
4499 if (status)
4500 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004501
Benny Halevyc0eae662009-08-14 17:20:14 +03004502 p = xdr_inline_decode(xdr, 4);
4503 if (unlikely(!p))
4504 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004505 len = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004506 if (len > NFS4_FHSIZE)
4507 return -EIO;
4508 fh->size = len;
Benny Halevyc0eae662009-08-14 17:20:14 +03004509 p = xdr_inline_decode(xdr, len);
4510 if (unlikely(!p))
4511 goto out_overflow;
Benny Halevy99398d02009-08-14 17:20:05 +03004512 memcpy(fh->data, p, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004513 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004514out_overflow:
4515 print_overflow_msg(__func__, xdr);
4516 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004517}
4518
4519static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4520{
4521 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05004522
Linus Torvalds1da177e2005-04-16 15:20:36 -07004523 status = decode_op_hdr(xdr, OP_LINK);
4524 if (status)
4525 return status;
4526 return decode_change_info(xdr, cinfo);
4527}
4528
4529/*
4530 * We create the owner, so we know a proper owner.id length is 4.
4531 */
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004532static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004533{
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004534 uint64_t offset, length, clientid;
Al Viro8687b632006-10-19 23:28:48 -07004535 __be32 *p;
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004536 uint32_t namelen, type;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004537
Bryan Schumakerbabddc72010-10-20 15:44:29 -04004538 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
Benny Halevyc0eae662009-08-14 17:20:14 +03004539 if (unlikely(!p))
4540 goto out_overflow;
Bryan Schumakerbabddc72010-10-20 15:44:29 -04004541 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
Benny Halevy3ceb4db2009-08-14 17:19:41 +03004542 p = xdr_decode_hyper(p, &length);
Bryan Schumakerbabddc72010-10-20 15:44:29 -04004543 type = be32_to_cpup(p++); /* 4 byte read */
4544 if (fl != NULL) { /* manipulate file lock */
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004545 fl->fl_start = (loff_t)offset;
4546 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4547 if (length == ~(uint64_t)0)
4548 fl->fl_end = OFFSET_MAX;
4549 fl->fl_type = F_WRLCK;
4550 if (type & 1)
4551 fl->fl_type = F_RDLCK;
4552 fl->fl_pid = 0;
4553 }
Bryan Schumakerbabddc72010-10-20 15:44:29 -04004554 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4555 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4556 p = xdr_inline_decode(xdr, namelen); /* variable size field */
Benny Halevyc0eae662009-08-14 17:20:14 +03004557 if (likely(p))
4558 return -NFS4ERR_DENIED;
4559out_overflow:
4560 print_overflow_msg(__func__, xdr);
4561 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004562}
4563
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004564static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004565{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004566 int status;
4567
4568 status = decode_op_hdr(xdr, OP_LOCK);
Trond Myklebustc1d51932008-04-07 13:20:54 -04004569 if (status == -EIO)
4570 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004571 if (status == 0) {
Benny Halevy07d30432009-08-14 17:19:52 +03004572 status = decode_stateid(xdr, &res->stateid);
4573 if (unlikely(status))
4574 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004575 } else if (status == -NFS4ERR_DENIED)
Trond Myklebustc1d51932008-04-07 13:20:54 -04004576 status = decode_lock_denied(xdr, NULL);
4577 if (res->open_seqid != NULL)
4578 nfs_increment_open_seqid(status, res->open_seqid);
4579 nfs_increment_lock_seqid(status, res->lock_seqid);
4580out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004581 return status;
4582}
4583
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004584static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004585{
4586 int status;
4587 status = decode_op_hdr(xdr, OP_LOCKT);
4588 if (status == -NFS4ERR_DENIED)
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004589 return decode_lock_denied(xdr, res->denied);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004590 return status;
4591}
4592
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004593static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004594{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004595 int status;
4596
4597 status = decode_op_hdr(xdr, OP_LOCKU);
Trond Myklebustc1d51932008-04-07 13:20:54 -04004598 if (status != -EIO)
4599 nfs_increment_lock_seqid(status, res->seqid);
Benny Halevy07d30432009-08-14 17:19:52 +03004600 if (status == 0)
4601 status = decode_stateid(xdr, &res->stateid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004602 return status;
4603}
4604
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04004605static int decode_release_lockowner(struct xdr_stream *xdr)
4606{
4607 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4608}
4609
Linus Torvalds1da177e2005-04-16 15:20:36 -07004610static int decode_lookup(struct xdr_stream *xdr)
4611{
4612 return decode_op_hdr(xdr, OP_LOOKUP);
4613}
4614
4615/* This is too sick! */
4616static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4617{
Andy Adamson05d564f2008-12-23 16:06:15 -05004618 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004619 uint32_t limit_type, nblocks, blocksize;
4620
Benny Halevyc0eae662009-08-14 17:20:14 +03004621 p = xdr_inline_decode(xdr, 12);
4622 if (unlikely(!p))
4623 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004624 limit_type = be32_to_cpup(p++);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004625 switch (limit_type) {
Andy Adamson05d564f2008-12-23 16:06:15 -05004626 case 1:
Benny Halevycccddf42009-08-14 17:20:19 +03004627 xdr_decode_hyper(p, maxsize);
Andy Adamson05d564f2008-12-23 16:06:15 -05004628 break;
4629 case 2:
Benny Halevy6f723f72009-08-14 17:19:37 +03004630 nblocks = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03004631 blocksize = be32_to_cpup(p);
Andy Adamson05d564f2008-12-23 16:06:15 -05004632 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004633 }
4634 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004635out_overflow:
4636 print_overflow_msg(__func__, xdr);
4637 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004638}
4639
4640static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4641{
Andy Adamson05d564f2008-12-23 16:06:15 -05004642 __be32 *p;
4643 uint32_t delegation_type;
Benny Halevy07d30432009-08-14 17:19:52 +03004644 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004645
Benny Halevyc0eae662009-08-14 17:20:14 +03004646 p = xdr_inline_decode(xdr, 4);
4647 if (unlikely(!p))
4648 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004649 delegation_type = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004650 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4651 res->delegation_type = 0;
4652 return 0;
4653 }
Benny Halevy07d30432009-08-14 17:19:52 +03004654 status = decode_stateid(xdr, &res->delegation);
4655 if (unlikely(status))
4656 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004657 p = xdr_inline_decode(xdr, 4);
4658 if (unlikely(!p))
4659 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004660 res->do_recall = be32_to_cpup(p);
Andy Adamson05d564f2008-12-23 16:06:15 -05004661
Linus Torvalds1da177e2005-04-16 15:20:36 -07004662 switch (delegation_type) {
Andy Adamson05d564f2008-12-23 16:06:15 -05004663 case NFS4_OPEN_DELEGATE_READ:
4664 res->delegation_type = FMODE_READ;
4665 break;
4666 case NFS4_OPEN_DELEGATE_WRITE:
4667 res->delegation_type = FMODE_WRITE|FMODE_READ;
4668 if (decode_space_limit(xdr, &res->maxsize) < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004669 return -EIO;
4670 }
David Howells7539bba2006-08-22 20:06:09 -04004671 return decode_ace(xdr, NULL, res->server->nfs_client);
Benny Halevyc0eae662009-08-14 17:20:14 +03004672out_overflow:
4673 print_overflow_msg(__func__, xdr);
4674 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004675}
4676
4677static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4678{
Andy Adamson05d564f2008-12-23 16:06:15 -05004679 __be32 *p;
Jeff Laytonaa53ed52007-06-05 14:49:03 -04004680 uint32_t savewords, bmlen, i;
Andy Adamson05d564f2008-12-23 16:06:15 -05004681 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004682
Andy Adamson05d564f2008-12-23 16:06:15 -05004683 status = decode_op_hdr(xdr, OP_OPEN);
Trond Myklebustc1d51932008-04-07 13:20:54 -04004684 if (status != -EIO)
4685 nfs_increment_open_seqid(status, res->seqid);
Benny Halevy07d30432009-08-14 17:19:52 +03004686 if (!status)
4687 status = decode_stateid(xdr, &res->stateid);
4688 if (unlikely(status))
Andy Adamson05d564f2008-12-23 16:06:15 -05004689 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004690
Andy Adamson05d564f2008-12-23 16:06:15 -05004691 decode_change_info(xdr, &res->cinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004692
Benny Halevyc0eae662009-08-14 17:20:14 +03004693 p = xdr_inline_decode(xdr, 8);
4694 if (unlikely(!p))
4695 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004696 res->rflags = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03004697 bmlen = be32_to_cpup(p);
Andy Adamson05d564f2008-12-23 16:06:15 -05004698 if (bmlen > 10)
4699 goto xdr_error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004700
Benny Halevyc0eae662009-08-14 17:20:14 +03004701 p = xdr_inline_decode(xdr, bmlen << 2);
4702 if (unlikely(!p))
4703 goto out_overflow;
Jeff Laytonaa53ed52007-06-05 14:49:03 -04004704 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4705 for (i = 0; i < savewords; ++i)
Benny Halevy6f723f72009-08-14 17:19:37 +03004706 res->attrset[i] = be32_to_cpup(p++);
Jeff Laytonaa53ed52007-06-05 14:49:03 -04004707 for (; i < NFS4_BITMAP_SIZE; i++)
4708 res->attrset[i] = 0;
4709
Linus Torvalds1da177e2005-04-16 15:20:36 -07004710 return decode_delegation(xdr, res);
4711xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07004712 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004713 return -EIO;
Benny Halevyc0eae662009-08-14 17:20:14 +03004714out_overflow:
4715 print_overflow_msg(__func__, xdr);
4716 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004717}
4718
4719static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4720{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004721 int status;
4722
Andy Adamson05d564f2008-12-23 16:06:15 -05004723 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
Trond Myklebustc1d51932008-04-07 13:20:54 -04004724 if (status != -EIO)
4725 nfs_increment_open_seqid(status, res->seqid);
Benny Halevy07d30432009-08-14 17:19:52 +03004726 if (!status)
4727 status = decode_stateid(xdr, &res->stateid);
4728 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004729}
4730
4731static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4732{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004733 int status;
4734
4735 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
Trond Myklebustc1d51932008-04-07 13:20:54 -04004736 if (status != -EIO)
4737 nfs_increment_open_seqid(status, res->seqid);
Benny Halevy07d30432009-08-14 17:19:52 +03004738 if (!status)
4739 status = decode_stateid(xdr, &res->stateid);
4740 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004741}
4742
4743static int decode_putfh(struct xdr_stream *xdr)
4744{
4745 return decode_op_hdr(xdr, OP_PUTFH);
4746}
4747
4748static int decode_putrootfh(struct xdr_stream *xdr)
4749{
4750 return decode_op_hdr(xdr, OP_PUTROOTFH);
4751}
4752
4753static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4754{
4755 struct kvec *iov = req->rq_rcv_buf.head;
Al Viro8687b632006-10-19 23:28:48 -07004756 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004757 uint32_t count, eof, recvd, hdrlen;
4758 int status;
4759
4760 status = decode_op_hdr(xdr, OP_READ);
4761 if (status)
4762 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004763 p = xdr_inline_decode(xdr, 8);
4764 if (unlikely(!p))
4765 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004766 eof = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03004767 count = be32_to_cpup(p);
Chuck Lever8111f372010-12-14 14:58:01 +00004768 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004769 recvd = req->rq_rcv_buf.len - hdrlen;
4770 if (count > recvd) {
Chuck Leverfe82a182007-09-11 18:01:10 -04004771 dprintk("NFS: server cheating in read reply: "
Linus Torvalds1da177e2005-04-16 15:20:36 -07004772 "count %u > recvd %u\n", count, recvd);
4773 count = recvd;
4774 eof = 0;
4775 }
4776 xdr_read_pages(xdr, count);
4777 res->eof = eof;
4778 res->count = count;
4779 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004780out_overflow:
4781 print_overflow_msg(__func__, xdr);
4782 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004783}
4784
4785static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4786{
4787 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004788 struct kvec *iov = rcvbuf->head;
Chuck Leverbcecff72007-10-26 13:32:03 -04004789 size_t hdrlen;
4790 u32 recvd, pglen = rcvbuf->page_len;
Chuck Leverbcecff72007-10-26 13:32:03 -04004791 int status;
Chuck Levercd937102012-03-02 17:14:31 -05004792 __be32 verf[2];
Linus Torvalds1da177e2005-04-16 15:20:36 -07004793
4794 status = decode_op_hdr(xdr, OP_READDIR);
Benny Halevydb942bb2009-08-14 17:19:56 +03004795 if (!status)
4796 status = decode_verifier(xdr, readdir->verifier.data);
4797 if (unlikely(status))
Linus Torvalds1da177e2005-04-16 15:20:36 -07004798 return status;
Chuck Levercd937102012-03-02 17:14:31 -05004799 memcpy(verf, readdir->verifier.data, sizeof(verf));
Fred Isaman44109242008-04-02 15:21:15 +03004800 dprintk("%s: verifier = %08x:%08x\n",
Chuck Levercd937102012-03-02 17:14:31 -05004801 __func__, verf[0], verf[1]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004802
Benny Halevydb942bb2009-08-14 17:19:56 +03004803 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004804 recvd = rcvbuf->len - hdrlen;
4805 if (pglen > recvd)
4806 pglen = recvd;
4807 xdr_read_pages(xdr, pglen);
4808
Jeff Layton7bda2cd2008-02-22 14:50:01 -05004809
Trond Myklebustac396122010-11-15 20:26:22 -05004810 return pglen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004811}
4812
4813static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4814{
4815 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4816 struct kvec *iov = rcvbuf->head;
Chuck Leverbcecff72007-10-26 13:32:03 -04004817 size_t hdrlen;
4818 u32 len, recvd;
Al Viro8687b632006-10-19 23:28:48 -07004819 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004820 int status;
4821
4822 status = decode_op_hdr(xdr, OP_READLINK);
4823 if (status)
4824 return status;
4825
4826 /* Convert length of symlink */
Benny Halevyc0eae662009-08-14 17:20:14 +03004827 p = xdr_inline_decode(xdr, 4);
4828 if (unlikely(!p))
4829 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004830 len = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004831 if (len >= rcvbuf->page_len || len <= 0) {
Chuck Leverfe82a182007-09-11 18:01:10 -04004832 dprintk("nfs: server returned giant symlink!\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07004833 return -ENAMETOOLONG;
4834 }
4835 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4836 recvd = req->rq_rcv_buf.len - hdrlen;
4837 if (recvd < len) {
Chuck Leverfe82a182007-09-11 18:01:10 -04004838 dprintk("NFS: server cheating in readlink reply: "
Linus Torvalds1da177e2005-04-16 15:20:36 -07004839 "count %u > recvd %u\n", len, recvd);
4840 return -EIO;
4841 }
4842 xdr_read_pages(xdr, len);
4843 /*
4844 * The XDR encode routine has set things up so that
4845 * the link text will be copied directly into the
4846 * buffer. We just have to do overflow-checking,
4847 * and and null-terminate the text (the VFS expects
4848 * null-termination).
4849 */
Chuck Leverb4687da2010-09-21 16:55:48 -04004850 xdr_terminate_string(rcvbuf, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004851 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004852out_overflow:
4853 print_overflow_msg(__func__, xdr);
4854 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004855}
4856
4857static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4858{
4859 int status;
4860
4861 status = decode_op_hdr(xdr, OP_REMOVE);
4862 if (status)
4863 goto out;
4864 status = decode_change_info(xdr, cinfo);
4865out:
4866 return status;
4867}
4868
4869static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
4870 struct nfs4_change_info *new_cinfo)
4871{
4872 int status;
4873
4874 status = decode_op_hdr(xdr, OP_RENAME);
4875 if (status)
4876 goto out;
4877 if ((status = decode_change_info(xdr, old_cinfo)))
4878 goto out;
4879 status = decode_change_info(xdr, new_cinfo);
4880out:
4881 return status;
4882}
4883
4884static int decode_renew(struct xdr_stream *xdr)
4885{
4886 return decode_op_hdr(xdr, OP_RENEW);
4887}
4888
Trond Myklebust56ae19f2005-10-27 22:12:40 -04004889static int
4890decode_restorefh(struct xdr_stream *xdr)
4891{
4892 return decode_op_hdr(xdr, OP_RESTOREFH);
4893}
4894
J. Bruce Fields029d1052005-06-22 17:16:22 +00004895static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
Andy Adamsonbf118a32011-12-07 11:55:27 -05004896 struct nfs_getaclres *res)
J. Bruce Fields029d1052005-06-22 17:16:22 +00004897{
Andy Adamsonbf118a32011-12-07 11:55:27 -05004898 __be32 *savep, *bm_p;
J. Bruce Fields029d1052005-06-22 17:16:22 +00004899 uint32_t attrlen,
Fred Isamandae100c2011-07-30 20:52:37 -04004900 bitmap[3] = {0};
J. Bruce Fields029d1052005-06-22 17:16:22 +00004901 struct kvec *iov = req->rq_rcv_buf.head;
4902 int status;
Sachin Prabhu5a006892012-04-17 14:35:39 +01004903 size_t page_len = xdr->buf->page_len;
J. Bruce Fields029d1052005-06-22 17:16:22 +00004904
Andy Adamsonbf118a32011-12-07 11:55:27 -05004905 res->acl_len = 0;
J. Bruce Fields029d1052005-06-22 17:16:22 +00004906 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4907 goto out;
Sachin Prabhu5a006892012-04-17 14:35:39 +01004908
Andy Adamsonbf118a32011-12-07 11:55:27 -05004909 bm_p = xdr->p;
Sachin Prabhu5a006892012-04-17 14:35:39 +01004910 res->acl_data_offset = be32_to_cpup(bm_p) + 2;
4911 res->acl_data_offset <<= 2;
4912 /* Check if the acl data starts beyond the allocated buffer */
4913 if (res->acl_data_offset > page_len)
4914 return -ERANGE;
4915
J. Bruce Fields029d1052005-06-22 17:16:22 +00004916 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4917 goto out;
4918 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4919 goto out;
4920
4921 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
4922 return -EIO;
4923 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
Chuck Leverbcecff72007-10-26 13:32:03 -04004924 size_t hdrlen;
J. Bruce Fields029d1052005-06-22 17:16:22 +00004925
Andy Adamsonbf118a32011-12-07 11:55:27 -05004926 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
4927 * are stored with the acl data to handle the problem of
4928 * variable length bitmaps.*/
4929 xdr->p = bm_p;
Andy Adamsonbf118a32011-12-07 11:55:27 -05004930
J. Bruce Fields029d1052005-06-22 17:16:22 +00004931 /* We ignore &savep and don't do consistency checks on
4932 * the attr length. Let userspace figure it out.... */
4933 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
Andy Adamsonbf118a32011-12-07 11:55:27 -05004934 attrlen += res->acl_data_offset;
Sachin Prabhu5a006892012-04-17 14:35:39 +01004935 if (attrlen > page_len) {
Andy Adamsonbf118a32011-12-07 11:55:27 -05004936 if (res->acl_flags & NFS4_ACL_LEN_REQUEST) {
4937 /* getxattr interface called with a NULL buf */
4938 res->acl_len = attrlen;
4939 goto out;
4940 }
Sachin Prabhu5794d212012-04-17 14:36:40 +01004941 dprintk("NFS: acl reply: attrlen %u > page_len %zu\n",
Sachin Prabhu5a006892012-04-17 14:35:39 +01004942 attrlen, page_len);
J. Bruce Fields029d1052005-06-22 17:16:22 +00004943 return -EINVAL;
4944 }
J. Bruce Fieldsc04871e2006-05-30 16:28:58 -04004945 xdr_read_pages(xdr, attrlen);
Andy Adamsonbf118a32011-12-07 11:55:27 -05004946 res->acl_len = attrlen;
J. Bruce Fields8c233cf2005-10-13 16:54:27 -04004947 } else
4948 status = -EOPNOTSUPP;
J. Bruce Fields029d1052005-06-22 17:16:22 +00004949
4950out:
4951 return status;
4952}
4953
Linus Torvalds1da177e2005-04-16 15:20:36 -07004954static int
4955decode_savefh(struct xdr_stream *xdr)
4956{
4957 return decode_op_hdr(xdr, OP_SAVEFH);
4958}
4959
Benny Halevy9e9ecc02009-04-01 09:22:00 -04004960static int decode_setattr(struct xdr_stream *xdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004961{
Al Viro8687b632006-10-19 23:28:48 -07004962 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004963 uint32_t bmlen;
4964 int status;
4965
Linus Torvalds1da177e2005-04-16 15:20:36 -07004966 status = decode_op_hdr(xdr, OP_SETATTR);
4967 if (status)
4968 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004969 p = xdr_inline_decode(xdr, 4);
4970 if (unlikely(!p))
4971 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004972 bmlen = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03004973 p = xdr_inline_decode(xdr, bmlen << 2);
4974 if (likely(p))
4975 return 0;
4976out_overflow:
4977 print_overflow_msg(__func__, xdr);
4978 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004979}
4980
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04004981static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004982{
Al Viro8687b632006-10-19 23:28:48 -07004983 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004984 uint32_t opnum;
4985 int32_t nfserr;
4986
Benny Halevyc0eae662009-08-14 17:20:14 +03004987 p = xdr_inline_decode(xdr, 8);
4988 if (unlikely(!p))
4989 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004990 opnum = be32_to_cpup(p++);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004991 if (opnum != OP_SETCLIENTID) {
Chuck Leverfe82a182007-09-11 18:01:10 -04004992 dprintk("nfs: decode_setclientid: Server returned operation"
Andy Adamson6c0195a2008-12-23 16:06:15 -05004993 " %d\n", opnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004994 return -EIO;
4995 }
Benny Halevycccddf42009-08-14 17:20:19 +03004996 nfserr = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004997 if (nfserr == NFS_OK) {
Benny Halevyc0eae662009-08-14 17:20:14 +03004998 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
4999 if (unlikely(!p))
5000 goto out_overflow;
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04005001 p = xdr_decode_hyper(p, &res->clientid);
5002 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005003 } else if (nfserr == NFSERR_CLID_INUSE) {
5004 uint32_t len;
5005
5006 /* skip netid string */
Benny Halevyc0eae662009-08-14 17:20:14 +03005007 p = xdr_inline_decode(xdr, 4);
5008 if (unlikely(!p))
5009 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03005010 len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03005011 p = xdr_inline_decode(xdr, len);
5012 if (unlikely(!p))
5013 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005014
5015 /* skip uaddr string */
Benny Halevyc0eae662009-08-14 17:20:14 +03005016 p = xdr_inline_decode(xdr, 4);
5017 if (unlikely(!p))
5018 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03005019 len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03005020 p = xdr_inline_decode(xdr, len);
5021 if (unlikely(!p))
5022 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005023 return -NFSERR_CLID_INUSE;
5024 } else
Benny Halevy856dff32008-03-31 17:39:06 +03005025 return nfs4_stat_to_errno(nfserr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005026
5027 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03005028out_overflow:
5029 print_overflow_msg(__func__, xdr);
5030 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005031}
5032
5033static int decode_setclientid_confirm(struct xdr_stream *xdr)
5034{
5035 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5036}
5037
5038static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
5039{
Al Viro8687b632006-10-19 23:28:48 -07005040 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005041 int status;
5042
5043 status = decode_op_hdr(xdr, OP_WRITE);
5044 if (status)
5045 return status;
5046
Benny Halevyc0eae662009-08-14 17:20:14 +03005047 p = xdr_inline_decode(xdr, 16);
5048 if (unlikely(!p))
5049 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03005050 res->count = be32_to_cpup(p++);
5051 res->verf->committed = be32_to_cpup(p++);
Chuck Levercd937102012-03-02 17:14:31 -05005052 memcpy(res->verf->verifier, p, NFS4_VERIFIER_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005053 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03005054out_overflow:
5055 print_overflow_msg(__func__, xdr);
5056 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005057}
5058
5059static int decode_delegreturn(struct xdr_stream *xdr)
5060{
5061 return decode_op_hdr(xdr, OP_DELEGRETURN);
5062}
5063
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005064static int decode_secinfo_gss(struct xdr_stream *xdr, struct nfs4_secinfo_flavor *flavor)
5065{
5066 __be32 *p;
5067
5068 p = xdr_inline_decode(xdr, 4);
5069 if (unlikely(!p))
5070 goto out_overflow;
5071 flavor->gss.sec_oid4.len = be32_to_cpup(p);
5072 if (flavor->gss.sec_oid4.len > GSS_OID_MAX_LEN)
5073 goto out_err;
5074
5075 p = xdr_inline_decode(xdr, flavor->gss.sec_oid4.len);
5076 if (unlikely(!p))
5077 goto out_overflow;
5078 memcpy(flavor->gss.sec_oid4.data, p, flavor->gss.sec_oid4.len);
5079
5080 p = xdr_inline_decode(xdr, 8);
5081 if (unlikely(!p))
5082 goto out_overflow;
5083 flavor->gss.qop4 = be32_to_cpup(p++);
5084 flavor->gss.service = be32_to_cpup(p);
5085
5086 return 0;
5087
5088out_overflow:
5089 print_overflow_msg(__func__, xdr);
5090 return -EIO;
5091out_err:
5092 return -EINVAL;
5093}
5094
Bryan Schumaker31e4dda2012-04-27 13:27:38 -04005095static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005096{
5097 struct nfs4_secinfo_flavor *sec_flavor;
5098 int status;
5099 __be32 *p;
Bryan Schumakerc3dfc282011-04-13 14:31:31 -04005100 int i, num_flavors;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005101
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005102 p = xdr_inline_decode(xdr, 4);
5103 if (unlikely(!p))
5104 goto out_overflow;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005105
Bryan Schumakerc3dfc282011-04-13 14:31:31 -04005106 res->flavors->num_flavors = 0;
5107 num_flavors = be32_to_cpup(p);
5108
5109 for (i = 0; i < num_flavors; i++) {
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005110 sec_flavor = &res->flavors->flavors[i];
Bryan Schumakerc3dfc282011-04-13 14:31:31 -04005111 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005112 break;
5113
5114 p = xdr_inline_decode(xdr, 4);
5115 if (unlikely(!p))
5116 goto out_overflow;
5117 sec_flavor->flavor = be32_to_cpup(p);
5118
5119 if (sec_flavor->flavor == RPC_AUTH_GSS) {
Bryan Schumaker613e9012011-04-27 15:28:44 -04005120 status = decode_secinfo_gss(xdr, sec_flavor);
5121 if (status)
5122 goto out;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005123 }
Bryan Schumakerc3dfc282011-04-13 14:31:31 -04005124 res->flavors->num_flavors++;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005125 }
5126
Bryan Schumaker31e4dda2012-04-27 13:27:38 -04005127 status = 0;
Bryan Schumaker613e9012011-04-27 15:28:44 -04005128out:
5129 return status;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005130out_overflow:
5131 print_overflow_msg(__func__, xdr);
5132 return -EIO;
5133}
5134
Bryan Schumaker31e4dda2012-04-27 13:27:38 -04005135static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5136{
5137 int status = decode_op_hdr(xdr, OP_SECINFO);
5138 if (status)
5139 return status;
5140 return decode_secinfo_common(xdr, res);
5141}
5142
Benny Halevy99fe60d2009-04-01 09:22:29 -04005143#if defined(CONFIG_NFS_V4_1)
Bryan Schumaker31e4dda2012-04-27 13:27:38 -04005144static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5145{
5146 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5147 if (status)
5148 return status;
5149 return decode_secinfo_common(xdr, res);
5150}
5151
Benny Halevy99fe60d2009-04-01 09:22:29 -04005152static int decode_exchange_id(struct xdr_stream *xdr,
5153 struct nfs41_exchange_id_res *res)
5154{
5155 __be32 *p;
5156 uint32_t dummy;
Benny Halevy2460ba52009-08-14 17:20:10 +03005157 char *dummy_str;
Benny Halevy99fe60d2009-04-01 09:22:29 -04005158 int status;
5159 struct nfs_client *clp = res->client;
Weston Andros Adamson7d2ed9a2012-02-17 15:20:26 -05005160 uint32_t impl_id_count;
Benny Halevy99fe60d2009-04-01 09:22:29 -04005161
5162 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5163 if (status)
5164 return status;
5165
Benny Halevyc0eae662009-08-14 17:20:14 +03005166 p = xdr_inline_decode(xdr, 8);
5167 if (unlikely(!p))
5168 goto out_overflow;
Andy Adamson114f64b2011-03-09 13:13:45 -05005169 xdr_decode_hyper(p, &clp->cl_clientid);
Benny Halevyc0eae662009-08-14 17:20:14 +03005170 p = xdr_inline_decode(xdr, 12);
5171 if (unlikely(!p))
5172 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03005173 clp->cl_seqid = be32_to_cpup(p++);
5174 clp->cl_exchange_flags = be32_to_cpup(p++);
Benny Halevy99fe60d2009-04-01 09:22:29 -04005175
5176 /* We ask for SP4_NONE */
Benny Halevycccddf42009-08-14 17:20:19 +03005177 dummy = be32_to_cpup(p);
Benny Halevy99fe60d2009-04-01 09:22:29 -04005178 if (dummy != SP4_NONE)
5179 return -EIO;
5180
5181 /* Throw away minor_id */
Benny Halevyc0eae662009-08-14 17:20:14 +03005182 p = xdr_inline_decode(xdr, 8);
5183 if (unlikely(!p))
5184 goto out_overflow;
Benny Halevy99fe60d2009-04-01 09:22:29 -04005185
5186 /* Throw away Major id */
Benny Halevy2460ba52009-08-14 17:20:10 +03005187 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5188 if (unlikely(status))
5189 return status;
Benny Halevy99fe60d2009-04-01 09:22:29 -04005190
Weston Andros Adamson78fe0f42011-05-31 19:05:47 -04005191 /* Save server_scope */
Benny Halevy2460ba52009-08-14 17:20:10 +03005192 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5193 if (unlikely(status))
5194 return status;
Benny Halevy99fe60d2009-04-01 09:22:29 -04005195
Weston Andros Adamson78fe0f42011-05-31 19:05:47 -04005196 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5197 return -EIO;
5198
5199 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5200 res->server_scope->server_scope_sz = dummy;
5201
Weston Andros Adamson7d2ed9a2012-02-17 15:20:26 -05005202 /* Implementation Id */
5203 p = xdr_inline_decode(xdr, 4);
5204 if (unlikely(!p))
5205 goto out_overflow;
5206 impl_id_count = be32_to_cpup(p++);
Benny Halevy99fe60d2009-04-01 09:22:29 -04005207
Weston Andros Adamson7d2ed9a2012-02-17 15:20:26 -05005208 if (impl_id_count) {
5209 /* nii_domain */
5210 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5211 if (unlikely(status))
5212 return status;
5213 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5214 return -EIO;
5215 memcpy(res->impl_id->domain, dummy_str, dummy);
5216
5217 /* nii_name */
5218 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5219 if (unlikely(status))
5220 return status;
5221 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5222 return -EIO;
5223 memcpy(res->impl_id->name, dummy_str, dummy);
5224
5225 /* nii_date */
5226 p = xdr_inline_decode(xdr, 12);
5227 if (unlikely(!p))
5228 goto out_overflow;
5229 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5230 res->impl_id->date.nseconds = be32_to_cpup(p);
5231
5232 /* if there's more than one entry, ignore the rest */
5233 }
Benny Halevy99fe60d2009-04-01 09:22:29 -04005234 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03005235out_overflow:
5236 print_overflow_msg(__func__, xdr);
5237 return -EIO;
Benny Halevy99fe60d2009-04-01 09:22:29 -04005238}
Andy Adamsonfc931582009-04-01 09:22:31 -04005239
5240static int decode_chan_attrs(struct xdr_stream *xdr,
5241 struct nfs4_channel_attrs *attrs)
5242{
5243 __be32 *p;
Benny Halevyc9c30dd2011-06-11 17:08:39 -04005244 u32 nr_attrs, val;
Andy Adamsonfc931582009-04-01 09:22:31 -04005245
Benny Halevyc0eae662009-08-14 17:20:14 +03005246 p = xdr_inline_decode(xdr, 28);
5247 if (unlikely(!p))
5248 goto out_overflow;
Benny Halevyc9c30dd2011-06-11 17:08:39 -04005249 val = be32_to_cpup(p++); /* headerpadsz */
5250 if (val)
5251 return -EINVAL; /* no support for header padding yet */
Benny Halevy6f723f72009-08-14 17:19:37 +03005252 attrs->max_rqst_sz = be32_to_cpup(p++);
5253 attrs->max_resp_sz = be32_to_cpup(p++);
5254 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5255 attrs->max_ops = be32_to_cpup(p++);
5256 attrs->max_reqs = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03005257 nr_attrs = be32_to_cpup(p);
Andy Adamsonfc931582009-04-01 09:22:31 -04005258 if (unlikely(nr_attrs > 1)) {
Weston Andros Adamsona0308892012-01-26 13:32:23 -05005259 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5260 "count %u\n", __func__, nr_attrs);
Andy Adamsonfc931582009-04-01 09:22:31 -04005261 return -EINVAL;
5262 }
Benny Halevyc0eae662009-08-14 17:20:14 +03005263 if (nr_attrs == 1) {
5264 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5265 if (unlikely(!p))
5266 goto out_overflow;
5267 }
Andy Adamsonfc931582009-04-01 09:22:31 -04005268 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03005269out_overflow:
5270 print_overflow_msg(__func__, xdr);
5271 return -EIO;
Andy Adamsonfc931582009-04-01 09:22:31 -04005272}
5273
Benny Halevye78291e2009-08-14 17:20:00 +03005274static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5275{
5276 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
Andy Adamsonfc931582009-04-01 09:22:31 -04005277}
5278
5279static int decode_create_session(struct xdr_stream *xdr,
5280 struct nfs41_create_session_res *res)
5281{
5282 __be32 *p;
5283 int status;
5284 struct nfs_client *clp = res->client;
5285 struct nfs4_session *session = clp->cl_session;
5286
5287 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
Benny Halevye78291e2009-08-14 17:20:00 +03005288 if (!status)
5289 status = decode_sessionid(xdr, &session->sess_id);
5290 if (unlikely(status))
Andy Adamsonfc931582009-04-01 09:22:31 -04005291 return status;
5292
Andy Adamsonfc931582009-04-01 09:22:31 -04005293 /* seqid, flags */
Benny Halevyc0eae662009-08-14 17:20:14 +03005294 p = xdr_inline_decode(xdr, 8);
5295 if (unlikely(!p))
5296 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03005297 clp->cl_seqid = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03005298 session->flags = be32_to_cpup(p);
Andy Adamsonfc931582009-04-01 09:22:31 -04005299
5300 /* Channel attributes */
5301 status = decode_chan_attrs(xdr, &session->fc_attrs);
5302 if (!status)
5303 status = decode_chan_attrs(xdr, &session->bc_attrs);
5304 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03005305out_overflow:
5306 print_overflow_msg(__func__, xdr);
5307 return -EIO;
Andy Adamsonfc931582009-04-01 09:22:31 -04005308}
Andy Adamson0f3e66c2009-04-01 09:22:34 -04005309
5310static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5311{
5312 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5313}
Ricardo Labiaga18019752009-12-05 16:08:40 -05005314
5315static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5316{
5317 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5318}
Benny Halevy99fe60d2009-04-01 09:22:29 -04005319#endif /* CONFIG_NFS_V4_1 */
5320
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005321static int decode_sequence(struct xdr_stream *xdr,
5322 struct nfs4_sequence_res *res,
5323 struct rpc_rqst *rqstp)
5324{
5325#if defined(CONFIG_NFS_V4_1)
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005326 struct nfs4_sessionid id;
5327 u32 dummy;
5328 int status;
5329 __be32 *p;
5330
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005331 if (!res->sr_session)
5332 return 0;
5333
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005334 status = decode_op_hdr(xdr, OP_SEQUENCE);
Benny Halevye78291e2009-08-14 17:20:00 +03005335 if (!status)
5336 status = decode_sessionid(xdr, &id);
5337 if (unlikely(status))
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005338 goto out_err;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005339
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005340 /*
5341 * If the server returns different values for sessionID, slotID or
5342 * sequence number, the server is looney tunes.
5343 */
Trond Myklebustfdcb4572010-02-08 09:32:40 -05005344 status = -EREMOTEIO;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005345
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005346 if (memcmp(id.data, res->sr_session->sess_id.data,
5347 NFS4_MAX_SESSIONID_LEN)) {
5348 dprintk("%s Invalid session id\n", __func__);
5349 goto out_err;
5350 }
Benny Halevye78291e2009-08-14 17:20:00 +03005351
Benny Halevyc0eae662009-08-14 17:20:14 +03005352 p = xdr_inline_decode(xdr, 20);
5353 if (unlikely(!p))
5354 goto out_overflow;
Benny Halevye78291e2009-08-14 17:20:00 +03005355
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005356 /* seqid */
Benny Halevy6f723f72009-08-14 17:19:37 +03005357 dummy = be32_to_cpup(p++);
Benny Halevydfb4f302010-09-24 09:17:01 -04005358 if (dummy != res->sr_slot->seq_nr) {
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005359 dprintk("%s Invalid sequence number\n", __func__);
5360 goto out_err;
5361 }
5362 /* slot id */
Benny Halevy6f723f72009-08-14 17:19:37 +03005363 dummy = be32_to_cpup(p++);
Benny Halevydfb4f302010-09-24 09:17:01 -04005364 if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) {
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005365 dprintk("%s Invalid slot id\n", __func__);
5366 goto out_err;
5367 }
5368 /* highest slot id - currently not processed */
Benny Halevy6f723f72009-08-14 17:19:37 +03005369 dummy = be32_to_cpup(p++);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005370 /* target highest slot id - currently not processed */
Benny Halevy6f723f72009-08-14 17:19:37 +03005371 dummy = be32_to_cpup(p++);
Alexandros Batsakis0629e372009-12-05 13:46:14 -05005372 /* result flags */
5373 res->sr_status_flags = be32_to_cpup(p);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005374 status = 0;
5375out_err:
5376 res->sr_status = status;
5377 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03005378out_overflow:
5379 print_overflow_msg(__func__, xdr);
5380 status = -EIO;
5381 goto out_err;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005382#else /* CONFIG_NFS_V4_1 */
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005383 return 0;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005384#endif /* CONFIG_NFS_V4_1 */
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005385}
5386
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005387#if defined(CONFIG_NFS_V4_1)
Andy Adamson7f11d8d2011-07-30 20:52:35 -04005388/*
5389 * TODO: Need to handle case when EOF != true;
5390 */
5391static int decode_getdevicelist(struct xdr_stream *xdr,
5392 struct pnfs_devicelist *res)
5393{
5394 __be32 *p;
5395 int status, i;
5396 struct nfs_writeverf verftemp;
5397
5398 status = decode_op_hdr(xdr, OP_GETDEVICELIST);
5399 if (status)
5400 return status;
5401
5402 p = xdr_inline_decode(xdr, 8 + 8 + 4);
5403 if (unlikely(!p))
5404 goto out_overflow;
5405
5406 /* TODO: Skip cookie for now */
5407 p += 2;
5408
5409 /* Read verifier */
Chuck Levercd937102012-03-02 17:14:31 -05005410 p = xdr_decode_opaque_fixed(p, verftemp.verifier, NFS4_VERIFIER_SIZE);
Andy Adamson7f11d8d2011-07-30 20:52:35 -04005411
5412 res->num_devs = be32_to_cpup(p);
5413
5414 dprintk("%s: num_dev %d\n", __func__, res->num_devs);
5415
5416 if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) {
Weston Andros Adamsona0308892012-01-26 13:32:23 -05005417 printk(KERN_ERR "NFS: %s too many result dev_num %u\n",
Andy Adamson7f11d8d2011-07-30 20:52:35 -04005418 __func__, res->num_devs);
5419 return -EIO;
5420 }
5421
5422 p = xdr_inline_decode(xdr,
5423 res->num_devs * NFS4_DEVICEID4_SIZE + 4);
5424 if (unlikely(!p))
5425 goto out_overflow;
5426 for (i = 0; i < res->num_devs; i++)
5427 p = xdr_decode_opaque_fixed(p, res->dev_id[i].data,
5428 NFS4_DEVICEID4_SIZE);
5429 res->eof = be32_to_cpup(p);
5430 return 0;
5431out_overflow:
5432 print_overflow_msg(__func__, xdr);
5433 return -EIO;
5434}
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005435
5436static int decode_getdeviceinfo(struct xdr_stream *xdr,
5437 struct pnfs_device *pdev)
5438{
5439 __be32 *p;
5440 uint32_t len, type;
5441 int status;
5442
5443 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5444 if (status) {
5445 if (status == -ETOOSMALL) {
5446 p = xdr_inline_decode(xdr, 4);
5447 if (unlikely(!p))
5448 goto out_overflow;
5449 pdev->mincount = be32_to_cpup(p);
5450 dprintk("%s: Min count too small. mincnt = %u\n",
5451 __func__, pdev->mincount);
5452 }
5453 return status;
5454 }
5455
5456 p = xdr_inline_decode(xdr, 8);
5457 if (unlikely(!p))
5458 goto out_overflow;
5459 type = be32_to_cpup(p++);
5460 if (type != pdev->layout_type) {
5461 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5462 __func__, pdev->layout_type, type);
5463 return -EINVAL;
5464 }
5465 /*
5466 * Get the length of the opaque device_addr4. xdr_read_pages places
5467 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5468 * and places the remaining xdr data in xdr_buf->tail
5469 */
5470 pdev->mincount = be32_to_cpup(p);
5471 xdr_read_pages(xdr, pdev->mincount); /* include space for the length */
5472
5473 /* Parse notification bitmap, verifying that it is zero. */
5474 p = xdr_inline_decode(xdr, 4);
5475 if (unlikely(!p))
5476 goto out_overflow;
5477 len = be32_to_cpup(p);
5478 if (len) {
Chuck Leveread00592010-12-14 14:58:21 +00005479 uint32_t i;
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005480
5481 p = xdr_inline_decode(xdr, 4 * len);
5482 if (unlikely(!p))
5483 goto out_overflow;
5484 for (i = 0; i < len; i++, p++) {
5485 if (be32_to_cpup(p)) {
5486 dprintk("%s: notifications not supported\n",
5487 __func__);
5488 return -EIO;
5489 }
5490 }
5491 }
5492 return 0;
5493out_overflow:
5494 print_overflow_msg(__func__, xdr);
5495 return -EIO;
5496}
5497
5498static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5499 struct nfs4_layoutget_res *res)
5500{
5501 __be32 *p;
5502 int status;
5503 u32 layout_count;
Weston Andros Adamson35124a02011-03-24 16:48:21 -04005504 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5505 struct kvec *iov = rcvbuf->head;
5506 u32 hdrlen, recvd;
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005507
5508 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5509 if (status)
5510 return status;
Trond Myklebustea9d23f2012-03-04 18:13:56 -05005511 p = xdr_inline_decode(xdr, 4);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005512 if (unlikely(!p))
5513 goto out_overflow;
Trond Myklebustea9d23f2012-03-04 18:13:56 -05005514 res->return_on_close = be32_to_cpup(p);
5515 decode_stateid(xdr, &res->stateid);
5516 p = xdr_inline_decode(xdr, 4);
5517 if (unlikely(!p))
5518 goto out_overflow;
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005519 layout_count = be32_to_cpup(p);
5520 if (!layout_count) {
5521 dprintk("%s: server responded with empty layout array\n",
5522 __func__);
5523 return -EINVAL;
5524 }
5525
Weston Andros Adamson35124a02011-03-24 16:48:21 -04005526 p = xdr_inline_decode(xdr, 28);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005527 if (unlikely(!p))
5528 goto out_overflow;
5529 p = xdr_decode_hyper(p, &res->range.offset);
5530 p = xdr_decode_hyper(p, &res->range.length);
5531 res->range.iomode = be32_to_cpup(p++);
5532 res->type = be32_to_cpup(p++);
Weston Andros Adamson35124a02011-03-24 16:48:21 -04005533 res->layoutp->len = be32_to_cpup(p);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005534
5535 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5536 __func__,
5537 (unsigned long)res->range.offset,
5538 (unsigned long)res->range.length,
5539 res->range.iomode,
5540 res->type,
Weston Andros Adamson35124a02011-03-24 16:48:21 -04005541 res->layoutp->len);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005542
Weston Andros Adamson35124a02011-03-24 16:48:21 -04005543 hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
5544 recvd = req->rq_rcv_buf.len - hdrlen;
5545 if (res->layoutp->len > recvd) {
5546 dprintk("NFS: server cheating in layoutget reply: "
5547 "layout len %u > recvd %u\n",
5548 res->layoutp->len, recvd);
5549 return -EINVAL;
5550 }
5551
5552 xdr_read_pages(xdr, res->layoutp->len);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005553
5554 if (layout_count > 1) {
5555 /* We only handle a length one array at the moment. Any
5556 * further entries are just ignored. Note that this means
5557 * the client may see a response that is less than the
5558 * minimum it requested.
5559 */
5560 dprintk("%s: server responded with %d layouts, dropping tail\n",
5561 __func__, layout_count);
5562 }
5563
5564 return 0;
5565out_overflow:
5566 print_overflow_msg(__func__, xdr);
5567 return -EIO;
5568}
Andy Adamson863a3c62011-03-23 13:27:54 +00005569
Benny Halevycbe82602011-05-22 19:52:37 +03005570static int decode_layoutreturn(struct xdr_stream *xdr,
5571 struct nfs4_layoutreturn_res *res)
5572{
5573 __be32 *p;
5574 int status;
5575
5576 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5577 if (status)
5578 return status;
5579 p = xdr_inline_decode(xdr, 4);
5580 if (unlikely(!p))
5581 goto out_overflow;
5582 res->lrs_present = be32_to_cpup(p);
5583 if (res->lrs_present)
5584 status = decode_stateid(xdr, &res->stateid);
5585 return status;
5586out_overflow:
5587 print_overflow_msg(__func__, xdr);
5588 return -EIO;
5589}
5590
Andy Adamson863a3c62011-03-23 13:27:54 +00005591static int decode_layoutcommit(struct xdr_stream *xdr,
5592 struct rpc_rqst *req,
5593 struct nfs4_layoutcommit_res *res)
5594{
5595 __be32 *p;
5596 __u32 sizechanged;
5597 int status;
5598
5599 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
Andy Adamsondb29c082011-07-30 20:52:38 -04005600 res->status = status;
Andy Adamson863a3c62011-03-23 13:27:54 +00005601 if (status)
5602 return status;
5603
5604 p = xdr_inline_decode(xdr, 4);
5605 if (unlikely(!p))
5606 goto out_overflow;
5607 sizechanged = be32_to_cpup(p);
5608
5609 if (sizechanged) {
5610 /* throw away new size */
5611 p = xdr_inline_decode(xdr, 8);
5612 if (unlikely(!p))
5613 goto out_overflow;
5614 }
5615 return 0;
5616out_overflow:
5617 print_overflow_msg(__func__, xdr);
5618 return -EIO;
5619}
Bryan Schumaker7d974792011-06-02 14:59:08 -04005620
5621static int decode_test_stateid(struct xdr_stream *xdr,
5622 struct nfs41_test_stateid_res *res)
5623{
5624 __be32 *p;
5625 int status;
5626 int num_res;
5627
5628 status = decode_op_hdr(xdr, OP_TEST_STATEID);
5629 if (status)
5630 return status;
5631
5632 p = xdr_inline_decode(xdr, 4);
5633 if (unlikely(!p))
5634 goto out_overflow;
5635 num_res = be32_to_cpup(p++);
5636 if (num_res != 1)
5637 goto out;
5638
5639 p = xdr_inline_decode(xdr, 4);
5640 if (unlikely(!p))
5641 goto out_overflow;
5642 res->status = be32_to_cpup(p++);
Bryan Schumaker1cab0652012-01-31 10:39:29 -05005643
5644 return status;
Bryan Schumaker7d974792011-06-02 14:59:08 -04005645out_overflow:
5646 print_overflow_msg(__func__, xdr);
5647out:
5648 return -EIO;
5649}
Bryan Schumaker9aeda352011-06-02 14:59:09 -04005650
5651static int decode_free_stateid(struct xdr_stream *xdr,
5652 struct nfs41_free_stateid_res *res)
5653{
5654 __be32 *p;
5655 int status;
5656
5657 status = decode_op_hdr(xdr, OP_FREE_STATEID);
5658 if (status)
5659 return status;
5660
5661 p = xdr_inline_decode(xdr, 4);
5662 if (unlikely(!p))
5663 goto out_overflow;
5664 res->status = be32_to_cpup(p++);
5665 return res->status;
5666out_overflow:
5667 print_overflow_msg(__func__, xdr);
5668 return -EIO;
5669}
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005670#endif /* CONFIG_NFS_V4_1 */
5671
Linus Torvalds1da177e2005-04-16 15:20:36 -07005672/*
Benny Halevy49c25592008-12-23 16:06:16 -05005673 * END OF "GENERIC" DECODE ROUTINES.
5674 */
5675
5676/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07005677 * Decode OPEN_DOWNGRADE response
5678 */
Chuck Leverbf269552010-12-14 14:59:29 +00005679static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
5680 struct xdr_stream *xdr,
5681 struct nfs_closeres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005682{
Andy Adamson05d564f2008-12-23 16:06:15 -05005683 struct compound_hdr hdr;
5684 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005685
Chuck Leverbf269552010-12-14 14:59:29 +00005686 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05005687 if (status)
5688 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005689 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005690 if (status)
5691 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005692 status = decode_putfh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05005693 if (status)
5694 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005695 status = decode_open_downgrade(xdr, res);
Trond Myklebust516a6af2005-10-27 22:12:41 -04005696 if (status != 0)
5697 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05005698 decode_getfattr(xdr, res->fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005699out:
Andy Adamson05d564f2008-12-23 16:06:15 -05005700 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005701}
5702
5703/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07005704 * Decode ACCESS response
5705 */
Chuck Leverbf269552010-12-14 14:59:29 +00005706static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5707 struct nfs4_accessres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005708{
Linus Torvalds1da177e2005-04-16 15:20:36 -07005709 struct compound_hdr hdr;
5710 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05005711
Chuck Leverbf269552010-12-14 14:59:29 +00005712 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005713 if (status)
5714 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005715 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005716 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005717 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005718 status = decode_putfh(xdr);
Trond Myklebust76b32992007-08-10 17:45:11 -04005719 if (status != 0)
5720 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005721 status = decode_access(xdr, res);
Trond Myklebust76b32992007-08-10 17:45:11 -04005722 if (status != 0)
5723 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05005724 decode_getfattr(xdr, res->fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005725out:
5726 return status;
5727}
5728
5729/*
5730 * Decode LOOKUP response
5731 */
Chuck Leverbf269552010-12-14 14:59:29 +00005732static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5733 struct nfs4_lookup_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005734{
Linus Torvalds1da177e2005-04-16 15:20:36 -07005735 struct compound_hdr hdr;
5736 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05005737
Chuck Leverbf269552010-12-14 14:59:29 +00005738 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005739 if (status)
5740 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005741 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005742 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005743 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005744 status = decode_putfh(xdr);
5745 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005746 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005747 status = decode_lookup(xdr);
5748 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005749 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005750 status = decode_getfh(xdr, res->fh);
5751 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005752 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05005753 status = decode_getfattr(xdr, res->fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005754out:
5755 return status;
5756}
5757
5758/*
5759 * Decode LOOKUP_ROOT response
5760 */
Chuck Leverbf269552010-12-14 14:59:29 +00005761static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
5762 struct xdr_stream *xdr,
5763 struct nfs4_lookup_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005764{
Linus Torvalds1da177e2005-04-16 15:20:36 -07005765 struct compound_hdr hdr;
5766 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05005767
Chuck Leverbf269552010-12-14 14:59:29 +00005768 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005769 if (status)
5770 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005771 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005772 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005773 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005774 status = decode_putrootfh(xdr);
5775 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005776 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005777 status = decode_getfh(xdr, res->fh);
5778 if (status == 0)
Trond Myklebust6926afd2012-01-07 13:22:46 -05005779 status = decode_getfattr(xdr, res->fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005780out:
5781 return status;
5782}
5783
5784/*
5785 * Decode REMOVE response
5786 */
Chuck Leverbf269552010-12-14 14:59:29 +00005787static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5788 struct nfs_removeres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005789{
Linus Torvalds1da177e2005-04-16 15:20:36 -07005790 struct compound_hdr hdr;
5791 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05005792
Chuck Leverbf269552010-12-14 14:59:29 +00005793 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005794 if (status)
5795 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005796 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005797 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005798 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005799 status = decode_putfh(xdr);
5800 if (status)
Trond Myklebust16e42952005-10-27 22:12:44 -04005801 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005802 status = decode_remove(xdr, &res->cinfo);
5803 if (status)
Trond Myklebust16e42952005-10-27 22:12:44 -04005804 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05005805 decode_getfattr(xdr, res->dir_attr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005806out:
5807 return status;
5808}
5809
5810/*
5811 * Decode RENAME response
5812 */
Chuck Leverbf269552010-12-14 14:59:29 +00005813static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5814 struct nfs_renameres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005815{
Linus Torvalds1da177e2005-04-16 15:20:36 -07005816 struct compound_hdr hdr;
5817 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05005818
Chuck Leverbf269552010-12-14 14:59:29 +00005819 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005820 if (status)
5821 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005822 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005823 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005824 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005825 status = decode_putfh(xdr);
5826 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005827 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005828 status = decode_savefh(xdr);
5829 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005830 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005831 status = decode_putfh(xdr);
5832 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005833 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005834 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
5835 if (status)
Trond Myklebust6caf2c82005-10-27 22:12:43 -04005836 goto out;
5837 /* Current FH is target directory */
Trond Myklebust6926afd2012-01-07 13:22:46 -05005838 if (decode_getfattr(xdr, res->new_fattr, res->server))
Trond Myklebust6caf2c82005-10-27 22:12:43 -04005839 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005840 status = decode_restorefh(xdr);
5841 if (status)
Trond Myklebust6caf2c82005-10-27 22:12:43 -04005842 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05005843 decode_getfattr(xdr, res->old_fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005844out:
5845 return status;
5846}
5847
5848/*
5849 * Decode LINK response
5850 */
Chuck Leverbf269552010-12-14 14:59:29 +00005851static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5852 struct nfs4_link_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005853{
Linus Torvalds1da177e2005-04-16 15:20:36 -07005854 struct compound_hdr hdr;
5855 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05005856
Chuck Leverbf269552010-12-14 14:59:29 +00005857 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005858 if (status)
5859 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005860 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005861 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005862 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005863 status = decode_putfh(xdr);
5864 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005865 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005866 status = decode_savefh(xdr);
5867 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005868 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005869 status = decode_putfh(xdr);
5870 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005871 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005872 status = decode_link(xdr, &res->cinfo);
5873 if (status)
Trond Myklebust91ba2ee2005-10-27 22:12:42 -04005874 goto out;
5875 /*
5876 * Note order: OP_LINK leaves the directory as the current
5877 * filehandle.
5878 */
Trond Myklebust6926afd2012-01-07 13:22:46 -05005879 if (decode_getfattr(xdr, res->dir_attr, res->server))
Trond Myklebust91ba2ee2005-10-27 22:12:42 -04005880 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005881 status = decode_restorefh(xdr);
5882 if (status)
Trond Myklebust91ba2ee2005-10-27 22:12:42 -04005883 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05005884 decode_getfattr(xdr, res->fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005885out:
5886 return status;
5887}
5888
5889/*
5890 * Decode CREATE response
5891 */
Chuck Leverbf269552010-12-14 14:59:29 +00005892static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5893 struct nfs4_create_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005894{
Linus Torvalds1da177e2005-04-16 15:20:36 -07005895 struct compound_hdr hdr;
5896 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05005897
Chuck Leverbf269552010-12-14 14:59:29 +00005898 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005899 if (status)
5900 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005901 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005902 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005903 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005904 status = decode_putfh(xdr);
5905 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005906 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005907 status = decode_savefh(xdr);
5908 if (status)
Trond Myklebust56ae19f2005-10-27 22:12:40 -04005909 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005910 status = decode_create(xdr, &res->dir_cinfo);
5911 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005912 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005913 status = decode_getfh(xdr, res->fh);
5914 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005915 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05005916 if (decode_getfattr(xdr, res->fattr, res->server))
Trond Myklebust56ae19f2005-10-27 22:12:40 -04005917 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005918 status = decode_restorefh(xdr);
5919 if (status)
Trond Myklebust56ae19f2005-10-27 22:12:40 -04005920 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05005921 decode_getfattr(xdr, res->dir_fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005922out:
5923 return status;
5924}
5925
5926/*
5927 * Decode SYMLINK response
5928 */
Chuck Leverbf269552010-12-14 14:59:29 +00005929static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5930 struct nfs4_create_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005931{
Chuck Leverbf269552010-12-14 14:59:29 +00005932 return nfs4_xdr_dec_create(rqstp, xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005933}
5934
5935/*
5936 * Decode GETATTR response
5937 */
Chuck Leverbf269552010-12-14 14:59:29 +00005938static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
5939 struct nfs4_getattr_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005940{
Linus Torvalds1da177e2005-04-16 15:20:36 -07005941 struct compound_hdr hdr;
5942 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05005943
Chuck Leverbf269552010-12-14 14:59:29 +00005944 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005945 if (status)
5946 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005947 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005948 if (status)
5949 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005950 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005951 if (status)
5952 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05005953 status = decode_getfattr(xdr, res->fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005954out:
5955 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005956}
5957
J. Bruce Fields23ec6962005-06-22 17:16:22 +00005958/*
5959 * Encode an SETACL request
5960 */
Chuck Lever9f06c712010-12-14 14:59:18 +00005961static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
5962 struct nfs_setaclargs *args)
J. Bruce Fields23ec6962005-06-22 17:16:22 +00005963{
Andy Adamson05d564f2008-12-23 16:06:15 -05005964 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04005965 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Andy Adamson05d564f2008-12-23 16:06:15 -05005966 };
J. Bruce Fields23ec6962005-06-22 17:16:22 +00005967
Chuck Lever9f06c712010-12-14 14:59:18 +00005968 encode_compound_hdr(xdr, req, &hdr);
5969 encode_sequence(xdr, &args->seq_args, &hdr);
5970 encode_putfh(xdr, args->fh, &hdr);
5971 encode_setacl(xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05005972 encode_nops(&hdr);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00005973}
Andy Adamson05d564f2008-12-23 16:06:15 -05005974
J. Bruce Fields23ec6962005-06-22 17:16:22 +00005975/*
5976 * Decode SETACL response
5977 */
5978static int
Chuck Leverbf269552010-12-14 14:59:29 +00005979nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
Benny Halevy73c403a2009-04-01 09:22:01 -04005980 struct nfs_setaclres *res)
J. Bruce Fields23ec6962005-06-22 17:16:22 +00005981{
J. Bruce Fields23ec6962005-06-22 17:16:22 +00005982 struct compound_hdr hdr;
5983 int status;
5984
Chuck Leverbf269552010-12-14 14:59:29 +00005985 status = decode_compound_hdr(xdr, &hdr);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00005986 if (status)
5987 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005988 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005989 if (status)
5990 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005991 status = decode_putfh(xdr);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00005992 if (status)
5993 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00005994 status = decode_setattr(xdr);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00005995out:
5996 return status;
5997}
Linus Torvalds1da177e2005-04-16 15:20:36 -07005998
5999/*
J. Bruce Fields029d1052005-06-22 17:16:22 +00006000 * Decode GETACL response
6001 */
6002static int
Chuck Leverbf269552010-12-14 14:59:29 +00006003nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
Benny Halevy663c79b2009-04-01 09:21:59 -04006004 struct nfs_getaclres *res)
J. Bruce Fields029d1052005-06-22 17:16:22 +00006005{
J. Bruce Fields029d1052005-06-22 17:16:22 +00006006 struct compound_hdr hdr;
6007 int status;
6008
Trond Myklebust331818f2012-02-03 18:30:53 -05006009 if (res->acl_scratch != NULL) {
6010 void *p = page_address(res->acl_scratch);
6011 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
6012 }
Chuck Leverbf269552010-12-14 14:59:29 +00006013 status = decode_compound_hdr(xdr, &hdr);
J. Bruce Fields029d1052005-06-22 17:16:22 +00006014 if (status)
6015 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006016 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006017 if (status)
6018 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006019 status = decode_putfh(xdr);
J. Bruce Fields029d1052005-06-22 17:16:22 +00006020 if (status)
6021 goto out;
Andy Adamsonbf118a32011-12-07 11:55:27 -05006022 status = decode_getacl(xdr, rqstp, res);
J. Bruce Fields029d1052005-06-22 17:16:22 +00006023
6024out:
6025 return status;
6026}
6027
6028/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07006029 * Decode CLOSE response
6030 */
Chuck Leverbf269552010-12-14 14:59:29 +00006031static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6032 struct nfs_closeres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006033{
Andy Adamson05d564f2008-12-23 16:06:15 -05006034 struct compound_hdr hdr;
6035 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006036
Chuck Leverbf269552010-12-14 14:59:29 +00006037 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006038 if (status)
6039 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006040 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006041 if (status)
6042 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006043 status = decode_putfh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006044 if (status)
6045 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006046 status = decode_close(xdr, res);
Trond Myklebust516a6af2005-10-27 22:12:41 -04006047 if (status != 0)
6048 goto out;
6049 /*
6050 * Note: Server may do delete on close for this file
6051 * in which case the getattr call will fail with
6052 * an ESTALE error. Shouldn't be a problem,
6053 * though, since fattr->valid will remain unset.
6054 */
Trond Myklebust6926afd2012-01-07 13:22:46 -05006055 decode_getfattr(xdr, res->fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006056out:
Andy Adamson05d564f2008-12-23 16:06:15 -05006057 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006058}
6059
6060/*
6061 * Decode OPEN response
6062 */
Chuck Leverbf269552010-12-14 14:59:29 +00006063static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6064 struct nfs_openres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006065{
Andy Adamson05d564f2008-12-23 16:06:15 -05006066 struct compound_hdr hdr;
6067 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006068
Chuck Leverbf269552010-12-14 14:59:29 +00006069 status = decode_compound_hdr(xdr, &hdr);
Trond Myklebust56ae19f2005-10-27 22:12:40 -04006070 if (status)
6071 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006072 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006073 if (status)
6074 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006075 status = decode_putfh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006076 if (status)
6077 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006078 status = decode_savefh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006079 if (status)
6080 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006081 status = decode_open(xdr, res);
Andy Adamson05d564f2008-12-23 16:06:15 -05006082 if (status)
6083 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006084 if (decode_getfh(xdr, &res->fh) != 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006085 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05006086 if (decode_getfattr(xdr, res->f_attr, res->server) != 0)
Trond Myklebust56ae19f2005-10-27 22:12:40 -04006087 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006088 if (decode_restorefh(xdr) != 0)
Trond Myklebust56ae19f2005-10-27 22:12:40 -04006089 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05006090 decode_getfattr(xdr, res->dir_attr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006091out:
Andy Adamson05d564f2008-12-23 16:06:15 -05006092 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006093}
6094
6095/*
6096 * Decode OPEN_CONFIRM response
6097 */
Chuck Leverbf269552010-12-14 14:59:29 +00006098static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6099 struct xdr_stream *xdr,
6100 struct nfs_open_confirmres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006101{
Andy Adamson05d564f2008-12-23 16:06:15 -05006102 struct compound_hdr hdr;
6103 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006104
Chuck Leverbf269552010-12-14 14:59:29 +00006105 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006106 if (status)
6107 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006108 status = decode_putfh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006109 if (status)
6110 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006111 status = decode_open_confirm(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006112out:
Andy Adamson05d564f2008-12-23 16:06:15 -05006113 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006114}
6115
6116/*
6117 * Decode OPEN response
6118 */
Chuck Leverbf269552010-12-14 14:59:29 +00006119static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6120 struct xdr_stream *xdr,
6121 struct nfs_openres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006122{
Andy Adamson05d564f2008-12-23 16:06:15 -05006123 struct compound_hdr hdr;
6124 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006125
Chuck Leverbf269552010-12-14 14:59:29 +00006126 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006127 if (status)
6128 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006129 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006130 if (status)
6131 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006132 status = decode_putfh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006133 if (status)
6134 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006135 status = decode_open(xdr, res);
Andy Adamson05d564f2008-12-23 16:06:15 -05006136 if (status)
6137 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05006138 decode_getfattr(xdr, res->f_attr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006139out:
Andy Adamson05d564f2008-12-23 16:06:15 -05006140 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006141}
6142
6143/*
6144 * Decode SETATTR response
6145 */
Chuck Leverbf269552010-12-14 14:59:29 +00006146static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6147 struct xdr_stream *xdr,
6148 struct nfs_setattrres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006149{
Andy Adamson05d564f2008-12-23 16:06:15 -05006150 struct compound_hdr hdr;
6151 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006152
Chuck Leverbf269552010-12-14 14:59:29 +00006153 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006154 if (status)
6155 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006156 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006157 if (status)
6158 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006159 status = decode_putfh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006160 if (status)
6161 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006162 status = decode_setattr(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006163 if (status)
6164 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05006165 decode_getfattr(xdr, res->fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006166out:
Andy Adamson05d564f2008-12-23 16:06:15 -05006167 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006168}
6169
6170/*
6171 * Decode LOCK response
6172 */
Chuck Leverbf269552010-12-14 14:59:29 +00006173static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6174 struct nfs_lock_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006175{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006176 struct compound_hdr hdr;
6177 int status;
6178
Chuck Leverbf269552010-12-14 14:59:29 +00006179 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006180 if (status)
6181 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006182 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006183 if (status)
6184 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006185 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006186 if (status)
6187 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006188 status = decode_lock(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006189out:
6190 return status;
6191}
6192
6193/*
6194 * Decode LOCKT response
6195 */
Chuck Leverbf269552010-12-14 14:59:29 +00006196static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6197 struct nfs_lockt_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006198{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006199 struct compound_hdr hdr;
6200 int status;
6201
Chuck Leverbf269552010-12-14 14:59:29 +00006202 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006203 if (status)
6204 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006205 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006206 if (status)
6207 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006208 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006209 if (status)
6210 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006211 status = decode_lockt(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006212out:
6213 return status;
6214}
6215
6216/*
6217 * Decode LOCKU response
6218 */
Chuck Leverbf269552010-12-14 14:59:29 +00006219static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6220 struct nfs_locku_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006221{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006222 struct compound_hdr hdr;
6223 int status;
6224
Chuck Leverbf269552010-12-14 14:59:29 +00006225 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006226 if (status)
6227 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006228 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006229 if (status)
6230 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006231 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006232 if (status)
6233 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006234 status = decode_locku(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006235out:
6236 return status;
6237}
6238
Chuck Leverbf269552010-12-14 14:59:29 +00006239static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6240 struct xdr_stream *xdr, void *dummy)
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04006241{
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04006242 struct compound_hdr hdr;
6243 int status;
6244
Chuck Leverbf269552010-12-14 14:59:29 +00006245 status = decode_compound_hdr(xdr, &hdr);
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04006246 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006247 status = decode_release_lockowner(xdr);
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04006248 return status;
6249}
6250
Linus Torvalds1da177e2005-04-16 15:20:36 -07006251/*
6252 * Decode READLINK response
6253 */
Chuck Leverbf269552010-12-14 14:59:29 +00006254static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6255 struct xdr_stream *xdr,
Benny Halevyf50c7002009-04-01 09:21:55 -04006256 struct nfs4_readlink_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006257{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006258 struct compound_hdr hdr;
6259 int status;
6260
Chuck Leverbf269552010-12-14 14:59:29 +00006261 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006262 if (status)
6263 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006264 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006265 if (status)
6266 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006267 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006268 if (status)
6269 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006270 status = decode_readlink(xdr, rqstp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006271out:
6272 return status;
6273}
6274
6275/*
6276 * Decode READDIR response
6277 */
Chuck Leverbf269552010-12-14 14:59:29 +00006278static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6279 struct nfs4_readdir_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006280{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006281 struct compound_hdr hdr;
6282 int status;
6283
Chuck Leverbf269552010-12-14 14:59:29 +00006284 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006285 if (status)
6286 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006287 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006288 if (status)
6289 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006290 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006291 if (status)
6292 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006293 status = decode_readdir(xdr, rqstp, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006294out:
6295 return status;
6296}
6297
6298/*
6299 * Decode Read response
6300 */
Chuck Leverbf269552010-12-14 14:59:29 +00006301static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6302 struct nfs_readres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006303{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006304 struct compound_hdr hdr;
6305 int status;
6306
Chuck Leverbf269552010-12-14 14:59:29 +00006307 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006308 if (status)
6309 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006310 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006311 if (status)
6312 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006313 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006314 if (status)
6315 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006316 status = decode_read(xdr, rqstp, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006317 if (!status)
6318 status = res->count;
6319out:
6320 return status;
6321}
6322
6323/*
6324 * Decode WRITE response
6325 */
Chuck Leverbf269552010-12-14 14:59:29 +00006326static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6327 struct nfs_writeres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006328{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006329 struct compound_hdr hdr;
6330 int status;
6331
Chuck Leverbf269552010-12-14 14:59:29 +00006332 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006333 if (status)
6334 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006335 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006336 if (status)
6337 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006338 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006339 if (status)
6340 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006341 status = decode_write(xdr, res);
Trond Myklebust4f9838c2005-10-27 22:12:44 -04006342 if (status)
6343 goto out;
Fred Isaman7ffd1062011-03-03 15:13:46 +00006344 if (res->fattr)
Trond Myklebust6926afd2012-01-07 13:22:46 -05006345 decode_getfattr(xdr, res->fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006346 if (!status)
6347 status = res->count;
6348out:
6349 return status;
6350}
6351
6352/*
6353 * Decode COMMIT response
6354 */
Chuck Leverbf269552010-12-14 14:59:29 +00006355static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6356 struct nfs_writeres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006357{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006358 struct compound_hdr hdr;
6359 int status;
6360
Chuck Leverbf269552010-12-14 14:59:29 +00006361 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006362 if (status)
6363 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006364 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006365 if (status)
6366 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006367 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006368 if (status)
6369 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006370 status = decode_commit(xdr, res);
Trond Myklebust4f9838c2005-10-27 22:12:44 -04006371 if (status)
6372 goto out;
Fred Isaman988b6dc2011-03-23 13:27:52 +00006373 if (res->fattr)
Trond Myklebust6926afd2012-01-07 13:22:46 -05006374 decode_getfattr(xdr, res->fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006375out:
6376 return status;
6377}
6378
6379/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006380 * Decode FSINFO response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006381 */
Chuck Leverbf269552010-12-14 14:59:29 +00006382static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
Benny Halevy3dda5e42009-04-01 09:21:57 -04006383 struct nfs4_fsinfo_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006384{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006385 struct compound_hdr hdr;
6386 int status;
6387
Chuck Leverbf269552010-12-14 14:59:29 +00006388 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006389 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006390 status = decode_sequence(xdr, &res->seq_res, req);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006391 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006392 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006393 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006394 status = decode_fsinfo(xdr, res->fsinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006395 return status;
6396}
6397
6398/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006399 * Decode PATHCONF response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006400 */
Chuck Leverbf269552010-12-14 14:59:29 +00006401static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
Benny Halevyd45b2982009-04-01 09:21:58 -04006402 struct nfs4_pathconf_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006403{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006404 struct compound_hdr hdr;
6405 int status;
6406
Chuck Leverbf269552010-12-14 14:59:29 +00006407 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006408 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006409 status = decode_sequence(xdr, &res->seq_res, req);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006410 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006411 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006412 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006413 status = decode_pathconf(xdr, res->pathconf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006414 return status;
6415}
6416
6417/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006418 * Decode STATFS response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006419 */
Chuck Leverbf269552010-12-14 14:59:29 +00006420static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
Benny Halevy24ad1482009-04-01 09:21:56 -04006421 struct nfs4_statfs_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006422{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006423 struct compound_hdr hdr;
6424 int status;
6425
Chuck Leverbf269552010-12-14 14:59:29 +00006426 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006427 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006428 status = decode_sequence(xdr, &res->seq_res, req);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006429 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006430 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006431 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006432 status = decode_statfs(xdr, res->fsstat);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006433 return status;
6434}
6435
6436/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006437 * Decode GETATTR_BITMAP response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006438 */
Chuck Leverbf269552010-12-14 14:59:29 +00006439static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6440 struct xdr_stream *xdr,
6441 struct nfs4_server_caps_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006442{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006443 struct compound_hdr hdr;
6444 int status;
6445
Chuck Leverbf269552010-12-14 14:59:29 +00006446 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006447 if (status)
6448 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006449 status = decode_sequence(xdr, &res->seq_res, req);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006450 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006451 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006452 status = decode_putfh(xdr);
6453 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006454 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006455 status = decode_server_caps(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006456out:
6457 return status;
6458}
6459
6460/*
6461 * Decode RENEW response
6462 */
Chuck Leverbf269552010-12-14 14:59:29 +00006463static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6464 void *__unused)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006465{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006466 struct compound_hdr hdr;
6467 int status;
6468
Chuck Leverbf269552010-12-14 14:59:29 +00006469 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006470 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006471 status = decode_renew(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006472 return status;
6473}
6474
6475/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006476 * Decode SETCLIENTID response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006477 */
Chuck Leverbf269552010-12-14 14:59:29 +00006478static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6479 struct xdr_stream *xdr,
6480 struct nfs4_setclientid_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006481{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006482 struct compound_hdr hdr;
6483 int status;
6484
Chuck Leverbf269552010-12-14 14:59:29 +00006485 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006486 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006487 status = decode_setclientid(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006488 return status;
6489}
6490
6491/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006492 * Decode SETCLIENTID_CONFIRM response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006493 */
Chuck Leverbf269552010-12-14 14:59:29 +00006494static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6495 struct xdr_stream *xdr,
6496 struct nfs_fsinfo *fsinfo)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006497{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006498 struct compound_hdr hdr;
6499 int status;
6500
Chuck Leverbf269552010-12-14 14:59:29 +00006501 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006502 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006503 status = decode_setclientid_confirm(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006504 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006505 status = decode_putrootfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006506 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006507 status = decode_fsinfo(xdr, fsinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006508 return status;
6509}
6510
6511/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006512 * Decode DELEGRETURN response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006513 */
Chuck Leverbf269552010-12-14 14:59:29 +00006514static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6515 struct xdr_stream *xdr,
6516 struct nfs4_delegreturnres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006517{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006518 struct compound_hdr hdr;
6519 int status;
6520
Chuck Leverbf269552010-12-14 14:59:29 +00006521 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006522 if (status)
6523 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006524 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006525 if (status)
Trond Myklebustfa178f22006-01-03 09:55:38 +01006526 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006527 status = decode_putfh(xdr);
Trond Myklebustfa178f22006-01-03 09:55:38 +01006528 if (status != 0)
6529 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006530 status = decode_delegreturn(xdr);
Jeff Layton556ae3b2010-03-21 12:10:36 -04006531 if (status != 0)
6532 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05006533 decode_getfattr(xdr, res->fattr, res->server);
Trond Myklebustfa178f22006-01-03 09:55:38 +01006534out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07006535 return status;
6536}
6537
Trond Myklebust683b57b2006-06-09 09:34:22 -04006538/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006539 * Decode FS_LOCATIONS response
Trond Myklebust683b57b2006-06-09 09:34:22 -04006540 */
Chuck Leverbf269552010-12-14 14:59:29 +00006541static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6542 struct xdr_stream *xdr,
Benny Halevy22958462009-04-01 09:22:02 -04006543 struct nfs4_fs_locations_res *res)
Trond Myklebust683b57b2006-06-09 09:34:22 -04006544{
Trond Myklebust683b57b2006-06-09 09:34:22 -04006545 struct compound_hdr hdr;
6546 int status;
6547
Chuck Leverbf269552010-12-14 14:59:29 +00006548 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006549 if (status)
6550 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006551 status = decode_sequence(xdr, &res->seq_res, req);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006552 if (status)
Trond Myklebust683b57b2006-06-09 09:34:22 -04006553 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006554 status = decode_putfh(xdr);
6555 if (status)
Trond Myklebust683b57b2006-06-09 09:34:22 -04006556 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006557 status = decode_lookup(xdr);
6558 if (status)
Trond Myklebust683b57b2006-06-09 09:34:22 -04006559 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006560 xdr_enter_page(xdr, PAGE_SIZE);
Trond Myklebust8b7e3f42012-01-30 15:43:56 -05006561 status = decode_getfattr_generic(xdr, &res->fs_locations->fattr,
6562 NULL, res->fs_locations,
6563 res->fs_locations->server);
Trond Myklebust683b57b2006-06-09 09:34:22 -04006564out:
6565 return status;
6566}
6567
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00006568/*
6569 * Decode SECINFO response
6570 */
6571static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6572 struct xdr_stream *xdr,
6573 struct nfs4_secinfo_res *res)
6574{
6575 struct compound_hdr hdr;
6576 int status;
6577
6578 status = decode_compound_hdr(xdr, &hdr);
6579 if (status)
6580 goto out;
6581 status = decode_sequence(xdr, &res->seq_res, rqstp);
6582 if (status)
6583 goto out;
6584 status = decode_putfh(xdr);
6585 if (status)
6586 goto out;
6587 status = decode_secinfo(xdr, res);
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00006588out:
6589 return status;
6590}
6591
Benny Halevy99fe60d2009-04-01 09:22:29 -04006592#if defined(CONFIG_NFS_V4_1)
6593/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006594 * Decode EXCHANGE_ID response
Benny Halevy99fe60d2009-04-01 09:22:29 -04006595 */
Chuck Leverbf269552010-12-14 14:59:29 +00006596static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6597 struct xdr_stream *xdr,
Benny Halevy99fe60d2009-04-01 09:22:29 -04006598 void *res)
6599{
Benny Halevy99fe60d2009-04-01 09:22:29 -04006600 struct compound_hdr hdr;
6601 int status;
6602
Chuck Leverbf269552010-12-14 14:59:29 +00006603 status = decode_compound_hdr(xdr, &hdr);
Benny Halevy99fe60d2009-04-01 09:22:29 -04006604 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006605 status = decode_exchange_id(xdr, res);
Benny Halevy99fe60d2009-04-01 09:22:29 -04006606 return status;
6607}
Andy Adamson2050f0c2009-04-01 09:22:30 -04006608
6609/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006610 * Decode CREATE_SESSION response
Andy Adamsonfc931582009-04-01 09:22:31 -04006611 */
Chuck Leverbf269552010-12-14 14:59:29 +00006612static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6613 struct xdr_stream *xdr,
Andy Adamsonfc931582009-04-01 09:22:31 -04006614 struct nfs41_create_session_res *res)
6615{
Andy Adamsonfc931582009-04-01 09:22:31 -04006616 struct compound_hdr hdr;
6617 int status;
6618
Chuck Leverbf269552010-12-14 14:59:29 +00006619 status = decode_compound_hdr(xdr, &hdr);
Andy Adamsonfc931582009-04-01 09:22:31 -04006620 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006621 status = decode_create_session(xdr, res);
Andy Adamsonfc931582009-04-01 09:22:31 -04006622 return status;
6623}
6624
6625/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006626 * Decode DESTROY_SESSION response
Andy Adamson0f3e66c2009-04-01 09:22:34 -04006627 */
Chuck Leverbf269552010-12-14 14:59:29 +00006628static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6629 struct xdr_stream *xdr,
6630 void *res)
Andy Adamson0f3e66c2009-04-01 09:22:34 -04006631{
Andy Adamson0f3e66c2009-04-01 09:22:34 -04006632 struct compound_hdr hdr;
6633 int status;
6634
Chuck Leverbf269552010-12-14 14:59:29 +00006635 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson0f3e66c2009-04-01 09:22:34 -04006636 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006637 status = decode_destroy_session(xdr, res);
Andy Adamson0f3e66c2009-04-01 09:22:34 -04006638 return status;
6639}
6640
6641/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006642 * Decode SEQUENCE response
Andy Adamsonfc01cea2009-04-01 09:22:36 -04006643 */
Chuck Leverbf269552010-12-14 14:59:29 +00006644static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
6645 struct xdr_stream *xdr,
Andy Adamsonfc01cea2009-04-01 09:22:36 -04006646 struct nfs4_sequence_res *res)
6647{
Andy Adamsonfc01cea2009-04-01 09:22:36 -04006648 struct compound_hdr hdr;
6649 int status;
6650
Chuck Leverbf269552010-12-14 14:59:29 +00006651 status = decode_compound_hdr(xdr, &hdr);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04006652 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006653 status = decode_sequence(xdr, res, rqstp);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04006654 return status;
6655}
6656
6657/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006658 * Decode GET_LEASE_TIME response
Andy Adamson2050f0c2009-04-01 09:22:30 -04006659 */
Chuck Leverbf269552010-12-14 14:59:29 +00006660static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
6661 struct xdr_stream *xdr,
Andy Adamson2050f0c2009-04-01 09:22:30 -04006662 struct nfs4_get_lease_time_res *res)
6663{
Andy Adamson2050f0c2009-04-01 09:22:30 -04006664 struct compound_hdr hdr;
6665 int status;
6666
Chuck Leverbf269552010-12-14 14:59:29 +00006667 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson2050f0c2009-04-01 09:22:30 -04006668 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006669 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
Andy Adamson2050f0c2009-04-01 09:22:30 -04006670 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006671 status = decode_putrootfh(xdr);
Andy Adamson2050f0c2009-04-01 09:22:30 -04006672 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006673 status = decode_fsinfo(xdr, res->lr_fsinfo);
Andy Adamson2050f0c2009-04-01 09:22:30 -04006674 return status;
6675}
Ricardo Labiaga18019752009-12-05 16:08:40 -05006676
6677/*
6678 * Decode RECLAIM_COMPLETE response
6679 */
Chuck Leverbf269552010-12-14 14:59:29 +00006680static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
6681 struct xdr_stream *xdr,
Ricardo Labiaga18019752009-12-05 16:08:40 -05006682 struct nfs41_reclaim_complete_res *res)
6683{
Ricardo Labiaga18019752009-12-05 16:08:40 -05006684 struct compound_hdr hdr;
6685 int status;
6686
Chuck Leverbf269552010-12-14 14:59:29 +00006687 status = decode_compound_hdr(xdr, &hdr);
Ricardo Labiaga18019752009-12-05 16:08:40 -05006688 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006689 status = decode_sequence(xdr, &res->seq_res, rqstp);
Ricardo Labiaga18019752009-12-05 16:08:40 -05006690 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006691 status = decode_reclaim_complete(xdr, (void *)NULL);
Ricardo Labiaga18019752009-12-05 16:08:40 -05006692 return status;
6693}
Andy Adamsonb1f69b72010-10-20 00:18:03 -04006694
6695/*
Andy Adamson7f11d8d2011-07-30 20:52:35 -04006696 * Decode GETDEVICELIST response
6697 */
6698static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp,
6699 struct xdr_stream *xdr,
6700 struct nfs4_getdevicelist_res *res)
6701{
6702 struct compound_hdr hdr;
6703 int status;
6704
6705 dprintk("encoding getdevicelist!\n");
6706
6707 status = decode_compound_hdr(xdr, &hdr);
6708 if (status != 0)
6709 goto out;
6710 status = decode_sequence(xdr, &res->seq_res, rqstp);
6711 if (status != 0)
6712 goto out;
6713 status = decode_putfh(xdr);
6714 if (status != 0)
6715 goto out;
6716 status = decode_getdevicelist(xdr, res->devlist);
6717out:
6718 return status;
6719}
6720
6721/*
Andy Adamsonb1f69b72010-10-20 00:18:03 -04006722 * Decode GETDEVINFO response
6723 */
Chuck Leverbf269552010-12-14 14:59:29 +00006724static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
6725 struct xdr_stream *xdr,
Andy Adamsonb1f69b72010-10-20 00:18:03 -04006726 struct nfs4_getdeviceinfo_res *res)
6727{
Andy Adamsonb1f69b72010-10-20 00:18:03 -04006728 struct compound_hdr hdr;
6729 int status;
6730
Chuck Leverbf269552010-12-14 14:59:29 +00006731 status = decode_compound_hdr(xdr, &hdr);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04006732 if (status != 0)
6733 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006734 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04006735 if (status != 0)
6736 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006737 status = decode_getdeviceinfo(xdr, res->pdev);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04006738out:
6739 return status;
6740}
6741
6742/*
6743 * Decode LAYOUTGET response
6744 */
Chuck Leverbf269552010-12-14 14:59:29 +00006745static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
6746 struct xdr_stream *xdr,
Andy Adamsonb1f69b72010-10-20 00:18:03 -04006747 struct nfs4_layoutget_res *res)
6748{
Andy Adamsonb1f69b72010-10-20 00:18:03 -04006749 struct compound_hdr hdr;
6750 int status;
6751
Chuck Leverbf269552010-12-14 14:59:29 +00006752 status = decode_compound_hdr(xdr, &hdr);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04006753 if (status)
6754 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006755 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04006756 if (status)
6757 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006758 status = decode_putfh(xdr);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04006759 if (status)
6760 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006761 status = decode_layoutget(xdr, rqstp, res);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04006762out:
6763 return status;
6764}
Andy Adamson863a3c62011-03-23 13:27:54 +00006765
6766/*
Benny Halevycbe82602011-05-22 19:52:37 +03006767 * Decode LAYOUTRETURN response
6768 */
6769static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
6770 struct xdr_stream *xdr,
6771 struct nfs4_layoutreturn_res *res)
6772{
6773 struct compound_hdr hdr;
6774 int status;
6775
6776 status = decode_compound_hdr(xdr, &hdr);
6777 if (status)
6778 goto out;
6779 status = decode_sequence(xdr, &res->seq_res, rqstp);
6780 if (status)
6781 goto out;
6782 status = decode_putfh(xdr);
6783 if (status)
6784 goto out;
6785 status = decode_layoutreturn(xdr, res);
6786out:
6787 return status;
6788}
6789
6790/*
Andy Adamson863a3c62011-03-23 13:27:54 +00006791 * Decode LAYOUTCOMMIT response
6792 */
6793static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
6794 struct xdr_stream *xdr,
6795 struct nfs4_layoutcommit_res *res)
6796{
6797 struct compound_hdr hdr;
6798 int status;
6799
6800 status = decode_compound_hdr(xdr, &hdr);
6801 if (status)
6802 goto out;
6803 status = decode_sequence(xdr, &res->seq_res, rqstp);
6804 if (status)
6805 goto out;
6806 status = decode_putfh(xdr);
6807 if (status)
6808 goto out;
6809 status = decode_layoutcommit(xdr, rqstp, res);
6810 if (status)
6811 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05006812 decode_getfattr(xdr, res->fattr, res->server);
Andy Adamson863a3c62011-03-23 13:27:54 +00006813out:
6814 return status;
6815}
Bryan Schumakerfca78d62011-06-02 14:59:07 -04006816
6817/*
6818 * Decode SECINFO_NO_NAME response
6819 */
6820static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
6821 struct xdr_stream *xdr,
6822 struct nfs4_secinfo_res *res)
6823{
6824 struct compound_hdr hdr;
6825 int status;
6826
6827 status = decode_compound_hdr(xdr, &hdr);
6828 if (status)
6829 goto out;
6830 status = decode_sequence(xdr, &res->seq_res, rqstp);
6831 if (status)
6832 goto out;
6833 status = decode_putrootfh(xdr);
6834 if (status)
6835 goto out;
Bryan Schumaker31e4dda2012-04-27 13:27:38 -04006836 status = decode_secinfo_no_name(xdr, res);
Bryan Schumakerfca78d62011-06-02 14:59:07 -04006837out:
6838 return status;
6839}
Bryan Schumaker7d974792011-06-02 14:59:08 -04006840
6841/*
6842 * Decode TEST_STATEID response
6843 */
6844static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
6845 struct xdr_stream *xdr,
6846 struct nfs41_test_stateid_res *res)
6847{
6848 struct compound_hdr hdr;
6849 int status;
6850
6851 status = decode_compound_hdr(xdr, &hdr);
6852 if (status)
6853 goto out;
6854 status = decode_sequence(xdr, &res->seq_res, rqstp);
6855 if (status)
6856 goto out;
6857 status = decode_test_stateid(xdr, res);
6858out:
6859 return status;
6860}
Bryan Schumaker9aeda352011-06-02 14:59:09 -04006861
6862/*
6863 * Decode FREE_STATEID response
6864 */
6865static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
6866 struct xdr_stream *xdr,
6867 struct nfs41_free_stateid_res *res)
6868{
6869 struct compound_hdr hdr;
6870 int status;
6871
6872 status = decode_compound_hdr(xdr, &hdr);
6873 if (status)
6874 goto out;
6875 status = decode_sequence(xdr, &res->seq_res, rqstp);
6876 if (status)
6877 goto out;
6878 status = decode_free_stateid(xdr, res);
6879out:
6880 return status;
6881}
Benny Halevy99fe60d2009-04-01 09:22:29 -04006882#endif /* CONFIG_NFS_V4_1 */
6883
Chuck Lever573c4e12010-12-14 14:58:11 +00006884/**
6885 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
6886 * the local page cache.
6887 * @xdr: XDR stream where entry resides
6888 * @entry: buffer to fill in with entry data
6889 * @plus: boolean indicating whether this should be a readdirplus entry
6890 *
6891 * Returns zero if successful, otherwise a negative errno value is
6892 * returned.
6893 *
6894 * This function is not invoked during READDIR reply decoding, but
6895 * rather whenever an application invokes the getdents(2) system call
6896 * on a directory already in our cache.
6897 */
6898int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
6899 int plus)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006900{
Fred Isamandae100c2011-07-30 20:52:37 -04006901 uint32_t bitmap[3] = {0};
Linus Torvalds1da177e2005-04-16 15:20:36 -07006902 uint32_t len;
Bryan Schumakerbabddc72010-10-20 15:44:29 -04006903 __be32 *p = xdr_inline_decode(xdr, 4);
6904 if (unlikely(!p))
6905 goto out_overflow;
Chuck Leverc08e76d2011-01-28 12:40:55 -05006906 if (*p == xdr_zero) {
Bryan Schumakerbabddc72010-10-20 15:44:29 -04006907 p = xdr_inline_decode(xdr, 4);
6908 if (unlikely(!p))
6909 goto out_overflow;
Chuck Leverc08e76d2011-01-28 12:40:55 -05006910 if (*p == xdr_zero)
Chuck Lever573c4e12010-12-14 14:58:11 +00006911 return -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006912 entry->eof = 1;
Chuck Lever573c4e12010-12-14 14:58:11 +00006913 return -EBADCOOKIE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006914 }
6915
Bryan Schumakerbabddc72010-10-20 15:44:29 -04006916 p = xdr_inline_decode(xdr, 12);
6917 if (unlikely(!p))
6918 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006919 entry->prev_cookie = entry->cookie;
6920 p = xdr_decode_hyper(p, &entry->cookie);
Chuck Leverc08e76d2011-01-28 12:40:55 -05006921 entry->len = be32_to_cpup(p);
Bryan Schumakerbabddc72010-10-20 15:44:29 -04006922
Trond Myklebust9af8c222010-10-24 11:52:55 -04006923 p = xdr_inline_decode(xdr, entry->len);
Bryan Schumakerbabddc72010-10-20 15:44:29 -04006924 if (unlikely(!p))
6925 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006926 entry->name = (const char *) p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006927
6928 /*
6929 * In case the server doesn't return an inode number,
6930 * we fake one here. (We don't use inode number 0,
6931 * since glibc seems to choke on it...)
6932 */
6933 entry->ino = 1;
Trond Myklebust4f082222010-10-24 13:14:02 -04006934 entry->fattr->valid = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006935
Trond Myklebust9af8c222010-10-24 11:52:55 -04006936 if (decode_attr_bitmap(xdr, bitmap) < 0)
Bryan Schumakerbabddc72010-10-20 15:44:29 -04006937 goto out_overflow;
Trond Myklebust9af8c222010-10-24 11:52:55 -04006938
6939 if (decode_attr_length(xdr, &len, &p) < 0)
6940 goto out_overflow;
6941
Chuck Lever573c4e12010-12-14 14:58:11 +00006942 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
Trond Myklebust8b7e3f42012-01-30 15:43:56 -05006943 NULL, entry->server) < 0)
Trond Myklebust9af8c222010-10-24 11:52:55 -04006944 goto out_overflow;
Trond Myklebust28331a42011-04-27 13:47:52 -04006945 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
6946 entry->ino = entry->fattr->mounted_on_fileid;
6947 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
Trond Myklebust9af8c222010-10-24 11:52:55 -04006948 entry->ino = entry->fattr->fileid;
6949
Trond Myklebust0b26a0b2010-11-20 14:26:44 -05006950 entry->d_type = DT_UNKNOWN;
6951 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
6952 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
6953
Chuck Lever573c4e12010-12-14 14:58:11 +00006954 return 0;
Bryan Schumakerbabddc72010-10-20 15:44:29 -04006955
6956out_overflow:
6957 print_overflow_msg(__func__, xdr);
Chuck Lever573c4e12010-12-14 14:58:11 +00006958 return -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006959}
6960
6961/*
6962 * We need to translate between nfs status return values and
6963 * the local errno values which may not be the same.
6964 */
6965static struct {
6966 int stat;
6967 int errno;
6968} nfs_errtbl[] = {
6969 { NFS4_OK, 0 },
Benny Halevy856dff32008-03-31 17:39:06 +03006970 { NFS4ERR_PERM, -EPERM },
6971 { NFS4ERR_NOENT, -ENOENT },
6972 { NFS4ERR_IO, -errno_NFSERR_IO},
6973 { NFS4ERR_NXIO, -ENXIO },
6974 { NFS4ERR_ACCESS, -EACCES },
6975 { NFS4ERR_EXIST, -EEXIST },
6976 { NFS4ERR_XDEV, -EXDEV },
6977 { NFS4ERR_NOTDIR, -ENOTDIR },
6978 { NFS4ERR_ISDIR, -EISDIR },
6979 { NFS4ERR_INVAL, -EINVAL },
6980 { NFS4ERR_FBIG, -EFBIG },
6981 { NFS4ERR_NOSPC, -ENOSPC },
6982 { NFS4ERR_ROFS, -EROFS },
6983 { NFS4ERR_MLINK, -EMLINK },
6984 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
6985 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
6986 { NFS4ERR_DQUOT, -EDQUOT },
6987 { NFS4ERR_STALE, -ESTALE },
6988 { NFS4ERR_BADHANDLE, -EBADHANDLE },
Benny Halevy856dff32008-03-31 17:39:06 +03006989 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
6990 { NFS4ERR_NOTSUPP, -ENOTSUPP },
6991 { NFS4ERR_TOOSMALL, -ETOOSMALL },
Trond Myklebustfdcb4572010-02-08 09:32:40 -05006992 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
Benny Halevy856dff32008-03-31 17:39:06 +03006993 { NFS4ERR_BADTYPE, -EBADTYPE },
6994 { NFS4ERR_LOCKED, -EAGAIN },
Benny Halevy856dff32008-03-31 17:39:06 +03006995 { NFS4ERR_SYMLINK, -ELOOP },
6996 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
6997 { NFS4ERR_DEADLOCK, -EDEADLK },
Benny Halevy856dff32008-03-31 17:39:06 +03006998 { -1, -EIO }
Linus Torvalds1da177e2005-04-16 15:20:36 -07006999};
7000
7001/*
7002 * Convert an NFS error code to a local one.
7003 * This one is used jointly by NFSv2 and NFSv3.
7004 */
7005static int
David Howells0a8ea432006-08-22 20:06:08 -04007006nfs4_stat_to_errno(int stat)
Linus Torvalds1da177e2005-04-16 15:20:36 -07007007{
7008 int i;
7009 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7010 if (nfs_errtbl[i].stat == stat)
7011 return nfs_errtbl[i].errno;
7012 }
7013 if (stat <= 10000 || stat > 10100) {
7014 /* The server is looney tunes. */
Trond Myklebustfdcb4572010-02-08 09:32:40 -05007015 return -EREMOTEIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007016 }
7017 /* If we cannot translate the error, the recovery routines should
7018 * handle it.
7019 * Note: remaining NFSv4 error codes have values > 10000, so should
7020 * not conflict with native Linux error codes.
7021 */
Benny Halevy856dff32008-03-31 17:39:06 +03007022 return -stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007023}
7024
Linus Torvalds1da177e2005-04-16 15:20:36 -07007025#define PROC(proc, argtype, restype) \
7026[NFSPROC4_CLNT_##proc] = { \
7027 .p_proc = NFSPROC4_COMPOUND, \
Chuck Lever9f06c712010-12-14 14:59:18 +00007028 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
Chuck Leverbf269552010-12-14 14:59:29 +00007029 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
Chuck Lever2bea90d2007-03-29 16:47:53 -04007030 .p_arglen = NFS4_##argtype##_sz, \
7031 .p_replen = NFS4_##restype##_sz, \
Chuck Levercc0175c2006-03-20 13:44:22 -05007032 .p_statidx = NFSPROC4_CLNT_##proc, \
7033 .p_name = #proc, \
Andy Adamson05d564f2008-12-23 16:06:15 -05007034}
Linus Torvalds1da177e2005-04-16 15:20:36 -07007035
7036struct rpc_procinfo nfs4_procedures[] = {
Chuck Lever7d93bd712010-12-14 14:57:42 +00007037 PROC(READ, enc_read, dec_read),
7038 PROC(WRITE, enc_write, dec_write),
7039 PROC(COMMIT, enc_commit, dec_commit),
7040 PROC(OPEN, enc_open, dec_open),
7041 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7042 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7043 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7044 PROC(CLOSE, enc_close, dec_close),
7045 PROC(SETATTR, enc_setattr, dec_setattr),
7046 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7047 PROC(RENEW, enc_renew, dec_renew),
7048 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7049 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7050 PROC(LOCK, enc_lock, dec_lock),
7051 PROC(LOCKT, enc_lockt, dec_lockt),
7052 PROC(LOCKU, enc_locku, dec_locku),
7053 PROC(ACCESS, enc_access, dec_access),
7054 PROC(GETATTR, enc_getattr, dec_getattr),
7055 PROC(LOOKUP, enc_lookup, dec_lookup),
7056 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7057 PROC(REMOVE, enc_remove, dec_remove),
7058 PROC(RENAME, enc_rename, dec_rename),
7059 PROC(LINK, enc_link, dec_link),
7060 PROC(SYMLINK, enc_symlink, dec_symlink),
7061 PROC(CREATE, enc_create, dec_create),
7062 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7063 PROC(STATFS, enc_statfs, dec_statfs),
7064 PROC(READLINK, enc_readlink, dec_readlink),
7065 PROC(READDIR, enc_readdir, dec_readdir),
7066 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7067 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7068 PROC(GETACL, enc_getacl, dec_getacl),
7069 PROC(SETACL, enc_setacl, dec_setacl),
7070 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7071 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00007072 PROC(SECINFO, enc_secinfo, dec_secinfo),
Benny Halevy99fe60d2009-04-01 09:22:29 -04007073#if defined(CONFIG_NFS_V4_1)
Chuck Lever7d93bd712010-12-14 14:57:42 +00007074 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7075 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7076 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7077 PROC(SEQUENCE, enc_sequence, dec_sequence),
7078 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7079 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7080 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7081 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
Andy Adamson863a3c62011-03-23 13:27:54 +00007082 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
Benny Halevycbe82602011-05-22 19:52:37 +03007083 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
Bryan Schumakerfca78d62011-06-02 14:59:07 -04007084 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
Bryan Schumaker7d974792011-06-02 14:59:08 -04007085 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
Bryan Schumaker9aeda352011-06-02 14:59:09 -04007086 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
Andy Adamson7f11d8d2011-07-30 20:52:35 -04007087 PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist),
Benny Halevy99fe60d2009-04-01 09:22:29 -04007088#endif /* CONFIG_NFS_V4_1 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07007089};
7090
Trond Myklebusta613fa12012-01-20 13:53:56 -05007091const struct rpc_version nfs_version4 = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07007092 .number = 4,
Tobias Klausere8c96f82006-03-24 03:15:34 -08007093 .nrprocs = ARRAY_SIZE(nfs4_procedures),
Linus Torvalds1da177e2005-04-16 15:20:36 -07007094 .procs = nfs4_procedures
7095};
7096
7097/*
7098 * Local variables:
7099 * c-basic-offset: 8
7100 * End:
7101 */