blob: 788adf3897c74f2cfee16e8584807dc7ddbd127d [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>
Chuck Leverf0920752012-05-21 22:45:41 -040055
Trond Myklebust4ce79712005-06-22 17:16:21 +000056#include "nfs4_fs.h"
Alexandros Batsakis4882ef72009-12-05 13:30:21 -050057#include "internal.h"
Anna Schumaker40c64c22015-04-15 13:00:05 -040058#include "nfs4idmap.h"
Trond Myklebust76e697b2012-11-26 14:20:49 -050059#include "nfs4session.h"
Andy Adamsonb1f69b72010-10-20 00:18:03 -040060#include "pnfs.h"
Chuck Leverf0920752012-05-21 22:45:41 -040061#include "netns.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070062
63#define NFSDBG_FACILITY NFSDBG_XDR
64
65/* Mapping from NFS error code to "errno" error code. */
66#define errno_NFSERR_IO EIO
67
David Howells0a8ea432006-08-22 20:06:08 -040068static int nfs4_stat_to_errno(int);
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
70/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
71#ifdef DEBUG
72#define NFS4_MAXTAGLEN 20
73#else
74#define NFS4_MAXTAGLEN 0
75#endif
76
Andy Adamson6c0195a2008-12-23 16:06:15 -050077/* lock,open owner id:
Trond Myklebust9f958ab2007-07-02 13:58:33 -040078 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
Linus Torvalds1da177e2005-04-16 15:20:36 -070079 */
Trond Myklebust95b72eb2012-04-20 19:24:51 -040080#define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
Trond Myklebustd035c362010-12-21 10:45:27 -050081#define lock_owner_id_maxsz (1 + 1 + 4)
Trond Myklebust9104a552007-07-17 21:52:42 -040082#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
Linus Torvalds1da177e2005-04-16 15:20:36 -070083#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
84#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
85#define op_encode_hdr_maxsz (1)
86#define op_decode_hdr_maxsz (2)
Trond Myklebust9104a552007-07-17 21:52:42 -040087#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
88#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
89#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
90#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
Linus Torvalds1da177e2005-04-16 15:20:36 -070091#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
92 (NFS4_FHSIZE >> 2))
93#define decode_putfh_maxsz (op_decode_hdr_maxsz)
94#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
95#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
96#define encode_getfh_maxsz (op_encode_hdr_maxsz)
97#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
98 ((3+NFS4_FHSIZE) >> 2))
Andy Adamsone5012d12011-07-11 17:17:42 -040099#define nfs4_fattr_bitmap_maxsz 4
J. Bruce Fields96928202005-06-22 17:16:22 +0000100#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
102#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
Trond Myklebustbd625ba2007-07-08 18:38:23 -0400103#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
104#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
David Quigleyaa9c2662013-05-22 12:50:44 -0400105#ifdef CONFIG_NFS_V4_SECURITY_LABEL
106/* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */
107#define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN))
David Quigleyaa9c2662013-05-22 12:50:44 -0400108#else
109#define nfs4_label_maxsz 0
David Quigleyaa9c2662013-05-22 12:50:44 -0400110#endif
Andy Adamson88034c32012-05-23 05:02:34 -0400111/* We support only one layout type per file system */
112#define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
J. Bruce Fields96928202005-06-22 17:16:22 +0000113/* This is based on getfattr, which uses the most attributes: */
114#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
Andy Adamson88034c32012-05-23 05:02:34 -0400115 3 + 3 + 3 + nfs4_owner_maxsz + \
David Quigleyaa9c2662013-05-22 12:50:44 -0400116 nfs4_group_maxsz + nfs4_label_maxsz + \
117 decode_mdsthreshold_maxsz))
J. Bruce Fields96928202005-06-22 17:16:22 +0000118#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
119 nfs4_fattr_value_maxsz)
120#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400121#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
122 1 + 2 + 1 + \
123 nfs4_owner_maxsz + \
124 nfs4_group_maxsz + \
David Quigleyaa9c2662013-05-22 12:50:44 -0400125 nfs4_label_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400126 4 + 4)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127#define encode_savefh_maxsz (op_encode_hdr_maxsz)
128#define decode_savefh_maxsz (op_decode_hdr_maxsz)
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400129#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
130#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
Fred Isaman2f42b5d2008-03-13 15:26:30 +0200131#define encode_fsinfo_maxsz (encode_getattr_maxsz)
Fred Isamandae100c2011-07-30 20:52:37 -0400132/* The 5 accounts for the PNFS attributes, and assumes that at most three
133 * layout types will be returned.
134 */
135#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
136 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
138#define decode_renew_maxsz (op_decode_hdr_maxsz)
139#define encode_setclientid_maxsz \
140 (op_encode_hdr_maxsz + \
Chuck Levercc38bac2007-12-10 14:56:54 -0500141 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
Jeff Laytonb8fb2f52015-06-09 19:43:58 -0400142 /* client name */ \
143 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
Chuck Levercc38bac2007-12-10 14:56:54 -0500144 1 /* sc_prog */ + \
Chuck Lever6dd34362014-11-08 20:15:18 -0500145 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
146 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
Chuck Levercc38bac2007-12-10 14:56:54 -0500147 1) /* sc_cb_ident */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148#define decode_setclientid_maxsz \
149 (op_decode_hdr_maxsz + \
Chuck Lever6dd34362014-11-08 20:15:18 -0500150 2 /* clientid */ + \
151 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
152 1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
153 1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154#define encode_setclientid_confirm_maxsz \
155 (op_encode_hdr_maxsz + \
156 3 + (NFS4_VERIFIER_SIZE >> 2))
157#define decode_setclientid_confirm_maxsz \
158 (op_decode_hdr_maxsz)
Trond Myklebuste6889622007-07-02 13:58:30 -0400159#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
160#define decode_lookup_maxsz (op_decode_hdr_maxsz)
Trond Myklebust2cebf822007-07-02 13:57:28 -0400161#define encode_share_access_maxsz \
162 (2)
Alexandros Batsakis4882ef72009-12-05 13:30:21 -0500163#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
Trond Myklebust2cebf822007-07-02 13:57:28 -0400164#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
165#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
166#define encode_open_maxsz (op_encode_hdr_maxsz + \
167 2 + encode_share_access_maxsz + 2 + \
168 open_owner_id_maxsz + \
169 encode_opentype_maxsz + \
170 encode_claim_null_maxsz)
171#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400172#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400173 decode_ace_maxsz)
174#define decode_change_info_maxsz (5)
175#define decode_open_maxsz (op_decode_hdr_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400176 decode_stateid_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400177 decode_change_info_maxsz + 1 + \
178 nfs4_fattr_bitmap_maxsz + \
179 decode_delegation_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400180#define encode_open_confirm_maxsz \
181 (op_encode_hdr_maxsz + \
182 encode_stateid_maxsz + 1)
183#define decode_open_confirm_maxsz \
184 (op_decode_hdr_maxsz + \
185 decode_stateid_maxsz)
186#define encode_open_downgrade_maxsz \
187 (op_encode_hdr_maxsz + \
188 encode_stateid_maxsz + 1 + \
189 encode_share_access_maxsz)
190#define decode_open_downgrade_maxsz \
191 (op_decode_hdr_maxsz + \
192 decode_stateid_maxsz)
193#define encode_close_maxsz (op_encode_hdr_maxsz + \
194 1 + encode_stateid_maxsz)
195#define decode_close_maxsz (op_decode_hdr_maxsz + \
196 decode_stateid_maxsz)
197#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
198 encode_stateid_maxsz + \
199 encode_attrs_maxsz)
200#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
201 nfs4_fattr_bitmap_maxsz)
202#define encode_read_maxsz (op_encode_hdr_maxsz + \
203 encode_stateid_maxsz + 3)
204#define decode_read_maxsz (op_decode_hdr_maxsz + 2)
205#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
David Quigleyaa9c2662013-05-22 12:50:44 -0400206 2 + encode_verifier_maxsz + 5 + \
207 nfs4_label_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400208#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
Chuck Levera7697f62014-03-12 12:51:17 -0400209 decode_verifier_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400210#define encode_readlink_maxsz (op_encode_hdr_maxsz)
211#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
212#define encode_write_maxsz (op_encode_hdr_maxsz + \
213 encode_stateid_maxsz + 4)
214#define decode_write_maxsz (op_decode_hdr_maxsz + \
215 2 + decode_verifier_maxsz)
216#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
217#define decode_commit_maxsz (op_decode_hdr_maxsz + \
218 decode_verifier_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219#define encode_remove_maxsz (op_encode_hdr_maxsz + \
220 nfs4_name_maxsz)
Benny Halevy6ce18392009-04-01 09:22:06 -0400221#define decode_remove_maxsz (op_decode_hdr_maxsz + \
222 decode_change_info_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223#define encode_rename_maxsz (op_encode_hdr_maxsz + \
224 2 * nfs4_name_maxsz)
Benny Halevy6ce18392009-04-01 09:22:06 -0400225#define decode_rename_maxsz (op_decode_hdr_maxsz + \
226 decode_change_info_maxsz + \
227 decode_change_info_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228#define encode_link_maxsz (op_encode_hdr_maxsz + \
229 nfs4_name_maxsz)
Benny Halevy6ce18392009-04-01 09:22:06 -0400230#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
Trond Myklebustdaccbde2010-06-25 18:11:43 -0400231#define encode_lockowner_maxsz (7)
Trond Myklebust9104a552007-07-17 21:52:42 -0400232#define encode_lock_maxsz (op_encode_hdr_maxsz + \
233 7 + \
Trond Myklebustdaccbde2010-06-25 18:11:43 -0400234 1 + encode_stateid_maxsz + 1 + \
235 encode_lockowner_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400236#define decode_lock_denied_maxsz \
237 (8 + decode_lockowner_maxsz)
238#define decode_lock_maxsz (op_decode_hdr_maxsz + \
239 decode_lock_denied_maxsz)
Trond Myklebustdaccbde2010-06-25 18:11:43 -0400240#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
241 encode_lockowner_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400242#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
243 decode_lock_denied_maxsz)
244#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
245 encode_stateid_maxsz + \
246 4)
247#define decode_locku_maxsz (op_decode_hdr_maxsz + \
248 decode_stateid_maxsz)
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -0400249#define encode_release_lockowner_maxsz \
250 (op_encode_hdr_maxsz + \
251 encode_lockowner_maxsz)
252#define decode_release_lockowner_maxsz \
253 (op_decode_hdr_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400254#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
255#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
257 1 + nfs4_name_maxsz + \
Chuck Lever94a6d752006-08-22 20:06:23 -0400258 1 + \
J. Bruce Fields96928202005-06-22 17:16:22 +0000259 nfs4_fattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
261#define encode_create_maxsz (op_encode_hdr_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400262 1 + 2 + nfs4_name_maxsz + \
263 encode_attrs_maxsz)
Trond Myklebust2cebf822007-07-02 13:57:28 -0400264#define decode_create_maxsz (op_decode_hdr_maxsz + \
265 decode_change_info_maxsz + \
266 nfs4_fattr_bitmap_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400267#define encode_statfs_maxsz (encode_getattr_maxsz)
268#define decode_statfs_maxsz (decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
270#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400271#define encode_getacl_maxsz (encode_getattr_maxsz)
272#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
273 nfs4_fattr_bitmap_maxsz + 1)
274#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
275 encode_stateid_maxsz + 3)
276#define decode_setacl_maxsz (decode_setattr_maxsz)
Trond Myklebuste6889622007-07-02 13:58:30 -0400277#define encode_fs_locations_maxsz \
278 (encode_getattr_maxsz)
279#define decode_fs_locations_maxsz \
280 (0)
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +0000281#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
Bryan Schumaker1650add2011-06-02 15:07:35 -0400282#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 -0400283
284#if defined(CONFIG_NFS_V4_1)
Andy Adamsonfc931582009-04-01 09:22:31 -0400285#define NFS4_MAX_MACHINE_NAME_LEN (64)
Jim Reesd751f742012-11-16 18:12:06 -0500286#define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
287 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
Andy Adamsonfc931582009-04-01 09:22:31 -0400288
Benny Halevy99fe60d2009-04-01 09:22:29 -0400289#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
290 encode_verifier_maxsz + \
291 1 /* co_ownerid.len */ + \
Jeff Laytonb8fb2f52015-06-09 19:43:58 -0400292 /* eia_clientowner */ \
293 1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
Benny Halevy99fe60d2009-04-01 09:22:29 -0400294 1 /* flags */ + \
295 1 /* spa_how */ + \
Weston Andros Adamson2031cd12013-08-13 16:37:32 -0400296 /* max is SP4_MACH_CRED (for now) */ + \
297 1 + NFS4_OP_MAP_NUM_WORDS + \
298 1 + NFS4_OP_MAP_NUM_WORDS + \
Weston Andros Adamsondb8ac8b2012-02-17 15:20:24 -0500299 1 /* implementation id array of size 1 */ + \
300 1 /* nii_domain */ + \
301 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
302 1 /* nii_name */ + \
Jim Reesd751f742012-11-16 18:12:06 -0500303 XDR_QUADLEN(IMPL_NAME_LIMIT) + \
Weston Andros Adamsondb8ac8b2012-02-17 15:20:24 -0500304 3 /* nii_date */)
Benny Halevy99fe60d2009-04-01 09:22:29 -0400305#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
306 2 /* eir_clientid */ + \
307 1 /* eir_sequenceid */ + \
308 1 /* eir_flags */ + \
309 1 /* spr_how */ + \
Weston Andros Adamson2031cd12013-08-13 16:37:32 -0400310 /* max is SP4_MACH_CRED (for now) */ + \
311 1 + NFS4_OP_MAP_NUM_WORDS + \
312 1 + NFS4_OP_MAP_NUM_WORDS + \
Benny Halevy99fe60d2009-04-01 09:22:29 -0400313 2 /* eir_server_owner.so_minor_id */ + \
314 /* eir_server_owner.so_major_id<> */ \
315 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
316 /* eir_server_scope<> */ \
317 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
318 1 /* eir_server_impl_id array length */ + \
Weston Andros Adamson7d2ed9a2012-02-17 15:20:26 -0500319 1 /* nii_domain */ + \
320 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
321 1 /* nii_name */ + \
322 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
323 3 /* nii_date */)
Andy Adamsonfc931582009-04-01 09:22:31 -0400324#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
325#define decode_channel_attrs_maxsz (6 + \
326 1 /* ca_rdma_ird.len */ + \
327 1 /* ca_rdma_ird */)
328#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
329 2 /* csa_clientid */ + \
330 1 /* csa_sequence */ + \
331 1 /* csa_flags */ + \
332 encode_channel_attrs_maxsz + \
333 encode_channel_attrs_maxsz + \
334 1 /* csa_cb_program */ + \
335 1 /* csa_sec_parms.len (1) */ + \
336 1 /* cb_secflavor (AUTH_SYS) */ + \
337 1 /* stamp */ + \
338 1 /* machinename.len */ + \
339 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
340 1 /* uid */ + \
341 1 /* gid */ + \
342 1 /* gids.len (0) */)
343#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
344 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
345 1 /* csr_sequence */ + \
346 1 /* csr_flags */ + \
347 decode_channel_attrs_maxsz + \
348 decode_channel_attrs_maxsz)
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -0400349#define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
350 /* bctsa_sessid */ \
351 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
352 1 /* bctsa_dir */ + \
353 1 /* bctsa_use_conn_in_rdma_mode */)
354#define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
355 /* bctsr_sessid */ \
356 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
357 1 /* bctsr_dir */ + \
358 1 /* bctsr_use_conn_in_rdma_mode */)
Andy Adamson0f3e66c2009-04-01 09:22:34 -0400359#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
360#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
Trond Myklebust66245532012-05-25 17:18:09 -0400361#define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
362#define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
Andy Adamsonfc01cea2009-04-01 09:22:36 -0400363#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
364 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
365#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
366 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
Ricardo Labiaga180197532009-12-05 16:08:40 -0500367#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
368#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
Christoph Hellwig84c9dee2014-09-10 17:37:28 -0700369#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \
370 XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \
371 1 /* layout type */ + \
372 1 /* maxcount */ + \
373 1 /* bitmap size */ + \
374 1 /* notification bitmap length */ + \
375 1 /* notification bitmap, word 0 */)
Andy Adamsonb1f69b72010-10-20 00:18:03 -0400376#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
377 1 /* layout type */ + \
378 1 /* opaque devaddr4 length */ + \
379 /* devaddr4 payload is read into page */ \
380 1 /* notification bitmap length */ + \
Christoph Hellwig84c9dee2014-09-10 17:37:28 -0700381 1 /* notification bitmap, word 0 */)
Andy Adamsonb1f69b72010-10-20 00:18:03 -0400382#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
383 encode_stateid_maxsz)
384#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
385 decode_stateid_maxsz + \
386 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
Andy Adamson863a3c62011-03-23 13:27:54 +0000387#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
388 2 /* offset */ + \
389 2 /* length */ + \
390 1 /* reclaim */ + \
391 encode_stateid_maxsz + \
392 1 /* new offset (true) */ + \
393 2 /* last byte written */ + \
394 1 /* nt_timechanged (false) */ + \
395 1 /* layoutupdate4 layout type */ + \
Christoph Hellwig5f919c92014-08-21 11:09:25 -0500396 1 /* layoutupdate4 opaqueue len */)
397 /* the actual content of layoutupdate4 should
398 be allocated by drivers and spliced in
399 using xdr_write_pages */
Andy Adamson863a3c62011-03-23 13:27:54 +0000400#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
Benny Halevycbe82602011-05-22 19:52:37 +0300401#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
402 encode_stateid_maxsz + \
Trond Myklebust6669cb82015-08-27 20:43:20 -0400403 1 + \
404 XDR_QUADLEN(NFS4_OPAQUE_LIMIT))
Benny Halevycbe82602011-05-22 19:52:37 +0300405#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
406 1 + decode_stateid_maxsz)
Bryan Schumakerfca78d62011-06-02 14:59:07 -0400407#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
408#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
Bryan Schumaker7d974792011-06-02 14:59:08 -0400409#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
410 XDR_QUADLEN(NFS4_STATEID_SIZE))
411#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
Bryan Schumaker9aeda352011-06-02 14:59:09 -0400412#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
413 XDR_QUADLEN(NFS4_STATEID_SIZE))
Andy Adamson9f79fb42013-09-10 12:56:29 -0400414#define decode_free_stateid_maxsz (op_decode_hdr_maxsz)
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400415#else /* CONFIG_NFS_V4_1 */
416#define encode_sequence_maxsz 0
417#define decode_sequence_maxsz 0
418#endif /* CONFIG_NFS_V4_1 */
419
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
421#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
422#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400423 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400425 encode_read_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426#define NFS4_dec_read_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_read_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400431 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400433 encode_readlink_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400435 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400437 decode_readlink_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400439 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400441 encode_readdir_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400443 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400445 decode_readdir_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400447 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400449 encode_write_maxsz + \
Trond Myklebust4f9838c2005-10-27 22:12:44 -0400450 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400452 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400454 decode_write_maxsz + \
Trond Myklebust4f9838c2005-10-27 22:12:44 -0400455 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400457 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458 encode_putfh_maxsz + \
Trond Myklebust85827152012-04-29 10:44:42 -0400459 encode_commit_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400461 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462 decode_putfh_maxsz + \
Trond Myklebust85827152012-04-29 10:44:42 -0400463 decode_commit_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400465 encode_sequence_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400466 encode_putfh_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400467 encode_open_maxsz + \
Weston Andros Adamson6168f622012-09-10 14:00:46 -0400468 encode_access_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400469 encode_getfh_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400470 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400472 decode_sequence_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400473 decode_putfh_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400474 decode_open_maxsz + \
Weston Andros Adamson6168f622012-09-10 14:00:46 -0400475 decode_access_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400476 decode_getfh_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400477 decode_getattr_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400478#define NFS4_enc_open_confirm_sz \
479 (compound_encode_hdr_maxsz + \
480 encode_putfh_maxsz + \
481 encode_open_confirm_maxsz)
482#define NFS4_dec_open_confirm_sz \
483 (compound_decode_hdr_maxsz + \
484 decode_putfh_maxsz + \
485 decode_open_confirm_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400487 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488 encode_putfh_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400489 encode_open_maxsz + \
Weston Andros Adamson6168f622012-09-10 14:00:46 -0400490 encode_access_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400491 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400493 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494 decode_putfh_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400495 decode_open_maxsz + \
Weston Andros Adamson6168f622012-09-10 14:00:46 -0400496 decode_access_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400497 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498#define NFS4_enc_open_downgrade_sz \
499 (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400500 encode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400501 encode_putfh_maxsz + \
502 encode_open_downgrade_maxsz + \
503 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504#define NFS4_dec_open_downgrade_sz \
505 (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400506 decode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400507 decode_putfh_maxsz + \
508 decode_open_downgrade_maxsz + \
509 decode_getattr_maxsz)
510#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400511 encode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400512 encode_putfh_maxsz + \
513 encode_close_maxsz + \
514 encode_getattr_maxsz)
515#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400516 decode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400517 decode_putfh_maxsz + \
518 decode_close_maxsz + \
519 decode_getattr_maxsz)
520#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400521 encode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400522 encode_putfh_maxsz + \
523 encode_setattr_maxsz + \
524 encode_getattr_maxsz)
525#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400526 decode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400527 decode_putfh_maxsz + \
528 decode_setattr_maxsz + \
529 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400531 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532 encode_putfh_maxsz + \
533 encode_fsinfo_maxsz)
534#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400535 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536 decode_putfh_maxsz + \
537 decode_fsinfo_maxsz)
538#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
539 encode_renew_maxsz)
540#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
541 decode_renew_maxsz)
542#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
543 encode_setclientid_maxsz)
544#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
545 decode_setclientid_maxsz)
546#define NFS4_enc_setclientid_confirm_sz \
547 (compound_encode_hdr_maxsz + \
Chuck Lever83ca7f52013-03-16 15:55:53 -0400548 encode_setclientid_confirm_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549#define NFS4_dec_setclientid_confirm_sz \
550 (compound_decode_hdr_maxsz + \
Chuck Lever83ca7f52013-03-16 15:55:53 -0400551 decode_setclientid_confirm_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400553 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400555 encode_lock_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400557 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400559 decode_lock_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400561 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400563 encode_lockt_maxsz)
564#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400565 decode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400566 decode_putfh_maxsz + \
567 decode_lockt_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400569 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400571 encode_locku_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400573 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400575 decode_locku_maxsz)
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -0400576#define NFS4_enc_release_lockowner_sz \
577 (compound_encode_hdr_maxsz + \
578 encode_lockowner_maxsz)
579#define NFS4_dec_release_lockowner_sz \
580 (compound_decode_hdr_maxsz + \
581 decode_lockowner_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400583 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584 encode_putfh_maxsz + \
Trond Myklebust76b32992007-08-10 17:45:11 -0400585 encode_access_maxsz + \
586 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400588 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589 decode_putfh_maxsz + \
Trond Myklebust76b32992007-08-10 17:45:11 -0400590 decode_access_maxsz + \
591 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400593 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594 encode_putfh_maxsz + \
Chuck Lever44c99932013-10-17 14:13:30 -0400595 encode_getattr_maxsz + \
596 encode_renew_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400598 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599 decode_putfh_maxsz + \
Chuck Lever44c99932013-10-17 14:13:30 -0400600 decode_getattr_maxsz + \
601 decode_renew_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400603 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700604 encode_putfh_maxsz + \
605 encode_lookup_maxsz + \
606 encode_getattr_maxsz + \
607 encode_getfh_maxsz)
608#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400609 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700610 decode_putfh_maxsz + \
Trond Myklebuste6889622007-07-02 13:58:30 -0400611 decode_lookup_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612 decode_getattr_maxsz + \
613 decode_getfh_maxsz)
614#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400615 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616 encode_putrootfh_maxsz + \
617 encode_getattr_maxsz + \
618 encode_getfh_maxsz)
619#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400620 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621 decode_putrootfh_maxsz + \
622 decode_getattr_maxsz + \
623 decode_getfh_maxsz)
624#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400625 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626 encode_putfh_maxsz + \
Trond Myklebust778d2812012-04-27 13:48:19 -0400627 encode_remove_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400629 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630 decode_putfh_maxsz + \
Trond Myklebust778d2812012-04-27 13:48:19 -0400631 decode_remove_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400633 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634 encode_putfh_maxsz + \
635 encode_savefh_maxsz + \
636 encode_putfh_maxsz + \
Trond Myklebust778d2812012-04-27 13:48:19 -0400637 encode_rename_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400639 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640 decode_putfh_maxsz + \
641 decode_savefh_maxsz + \
642 decode_putfh_maxsz + \
Trond Myklebust778d2812012-04-27 13:48:19 -0400643 decode_rename_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400645 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646 encode_putfh_maxsz + \
647 encode_savefh_maxsz + \
648 encode_putfh_maxsz + \
Trond Myklebust91ba2ee2005-10-27 22:12:42 -0400649 encode_link_maxsz + \
Trond Myklebust91ba2ee2005-10-27 22:12:42 -0400650 encode_restorefh_maxsz + \
Trond Myklebusta9f69912012-04-27 13:48:17 -0400651 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400653 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700654 decode_putfh_maxsz + \
655 decode_savefh_maxsz + \
656 decode_putfh_maxsz + \
Trond Myklebust91ba2ee2005-10-27 22:12:42 -0400657 decode_link_maxsz + \
Trond Myklebust91ba2ee2005-10-27 22:12:42 -0400658 decode_restorefh_maxsz + \
659 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400661 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662 encode_putfh_maxsz + \
663 encode_symlink_maxsz + \
664 encode_getattr_maxsz + \
665 encode_getfh_maxsz)
666#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400667 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668 decode_putfh_maxsz + \
669 decode_symlink_maxsz + \
670 decode_getattr_maxsz + \
671 decode_getfh_maxsz)
672#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400673 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674 encode_putfh_maxsz + \
675 encode_create_maxsz + \
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400676 encode_getfh_maxsz + \
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400677 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400679 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680 decode_putfh_maxsz + \
681 decode_create_maxsz + \
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400682 decode_getfh_maxsz + \
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400683 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400685 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686 encode_putfh_maxsz + \
687 encode_getattr_maxsz)
688#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400689 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690 decode_putfh_maxsz + \
691 decode_getattr_maxsz)
692#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400693 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400695 encode_statfs_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400697 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400699 decode_statfs_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400701 encode_sequence_maxsz + \
Trond Myklebustab91f262007-02-02 14:47:17 -0800702 encode_putfh_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703 encode_getattr_maxsz)
704#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400705 decode_sequence_maxsz + \
Trond Myklebustab91f262007-02-02 14:47:17 -0800706 decode_putfh_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707 decode_getattr_maxsz)
708#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400709 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710 encode_putfh_maxsz + \
Trond Myklebustfa178f22006-01-03 09:55:38 +0100711 encode_delegreturn_maxsz + \
712 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400714 decode_sequence_maxsz + \
Trond Myklebustfa178f22006-01-03 09:55:38 +0100715 decode_delegreturn_maxsz + \
716 decode_getattr_maxsz)
J. Bruce Fields029d1052005-06-22 17:16:22 +0000717#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400718 encode_sequence_maxsz + \
J. Bruce Fields029d1052005-06-22 17:16:22 +0000719 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400720 encode_getacl_maxsz)
J. Bruce Fields029d1052005-06-22 17:16:22 +0000721#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400722 decode_sequence_maxsz + \
J. Bruce Fields029d1052005-06-22 17:16:22 +0000723 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400724 decode_getacl_maxsz)
J. Bruce Fields23ec6962005-06-22 17:16:22 +0000725#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400726 encode_sequence_maxsz + \
J. Bruce Fields23ec6962005-06-22 17:16:22 +0000727 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400728 encode_setacl_maxsz)
J. Bruce Fields23ec6962005-06-22 17:16:22 +0000729#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400730 decode_sequence_maxsz + \
J. Bruce Fields23ec6962005-06-22 17:16:22 +0000731 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400732 decode_setacl_maxsz)
Trond Myklebust683b57b2006-06-09 09:34:22 -0400733#define NFS4_enc_fs_locations_sz \
734 (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400735 encode_sequence_maxsz + \
Trond Myklebust683b57b2006-06-09 09:34:22 -0400736 encode_putfh_maxsz + \
Trond Myklebuste6889622007-07-02 13:58:30 -0400737 encode_lookup_maxsz + \
Chuck Leverb03d7352013-10-17 14:12:50 -0400738 encode_fs_locations_maxsz + \
739 encode_renew_maxsz)
Trond Myklebust683b57b2006-06-09 09:34:22 -0400740#define NFS4_dec_fs_locations_sz \
741 (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400742 decode_sequence_maxsz + \
Trond Myklebust683b57b2006-06-09 09:34:22 -0400743 decode_putfh_maxsz + \
Trond Myklebuste6889622007-07-02 13:58:30 -0400744 decode_lookup_maxsz + \
Chuck Leverb03d7352013-10-17 14:12:50 -0400745 decode_fs_locations_maxsz + \
746 decode_renew_maxsz)
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +0000747#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
748 encode_sequence_maxsz + \
749 encode_putfh_maxsz + \
750 encode_secinfo_maxsz)
751#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
752 decode_sequence_maxsz + \
753 decode_putfh_maxsz + \
754 decode_secinfo_maxsz)
Chuck Lever44c99932013-10-17 14:13:30 -0400755#define NFS4_enc_fsid_present_sz \
756 (compound_encode_hdr_maxsz + \
757 encode_sequence_maxsz + \
758 encode_putfh_maxsz + \
759 encode_getfh_maxsz + \
760 encode_renew_maxsz)
761#define NFS4_dec_fsid_present_sz \
762 (compound_decode_hdr_maxsz + \
763 decode_sequence_maxsz + \
764 decode_putfh_maxsz + \
765 decode_getfh_maxsz + \
766 decode_renew_maxsz)
Benny Halevy99fe60d2009-04-01 09:22:29 -0400767#if defined(CONFIG_NFS_V4_1)
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -0400768#define NFS4_enc_bind_conn_to_session_sz \
769 (compound_encode_hdr_maxsz + \
770 encode_bind_conn_to_session_maxsz)
771#define NFS4_dec_bind_conn_to_session_sz \
772 (compound_decode_hdr_maxsz + \
773 decode_bind_conn_to_session_maxsz)
Benny Halevy99fe60d2009-04-01 09:22:29 -0400774#define NFS4_enc_exchange_id_sz \
775 (compound_encode_hdr_maxsz + \
776 encode_exchange_id_maxsz)
777#define NFS4_dec_exchange_id_sz \
778 (compound_decode_hdr_maxsz + \
779 decode_exchange_id_maxsz)
Andy Adamsonfc931582009-04-01 09:22:31 -0400780#define NFS4_enc_create_session_sz \
781 (compound_encode_hdr_maxsz + \
782 encode_create_session_maxsz)
783#define NFS4_dec_create_session_sz \
784 (compound_decode_hdr_maxsz + \
785 decode_create_session_maxsz)
Andy Adamson0f3e66c2009-04-01 09:22:34 -0400786#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
787 encode_destroy_session_maxsz)
788#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
789 decode_destroy_session_maxsz)
Trond Myklebust66245532012-05-25 17:18:09 -0400790#define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
791 encode_destroy_clientid_maxsz)
792#define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
793 decode_destroy_clientid_maxsz)
Andy Adamsonfc01cea2009-04-01 09:22:36 -0400794#define NFS4_enc_sequence_sz \
795 (compound_decode_hdr_maxsz + \
796 encode_sequence_maxsz)
797#define NFS4_dec_sequence_sz \
798 (compound_decode_hdr_maxsz + \
799 decode_sequence_maxsz)
Andy Adamson2050f0c2009-04-01 09:22:30 -0400800#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
801 encode_sequence_maxsz + \
802 encode_putrootfh_maxsz + \
803 encode_fsinfo_maxsz)
804#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
805 decode_sequence_maxsz + \
806 decode_putrootfh_maxsz + \
807 decode_fsinfo_maxsz)
Ricardo Labiaga180197532009-12-05 16:08:40 -0500808#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
809 encode_sequence_maxsz + \
810 encode_reclaim_complete_maxsz)
811#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
812 decode_sequence_maxsz + \
813 decode_reclaim_complete_maxsz)
Andy Adamsonb1f69b72010-10-20 00:18:03 -0400814#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
815 encode_sequence_maxsz +\
816 encode_getdeviceinfo_maxsz)
817#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
818 decode_sequence_maxsz + \
819 decode_getdeviceinfo_maxsz)
820#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
821 encode_sequence_maxsz + \
822 encode_putfh_maxsz + \
823 encode_layoutget_maxsz)
824#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
825 decode_sequence_maxsz + \
826 decode_putfh_maxsz + \
827 decode_layoutget_maxsz)
Andy Adamson863a3c62011-03-23 13:27:54 +0000828#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
829 encode_sequence_maxsz +\
830 encode_putfh_maxsz + \
831 encode_layoutcommit_maxsz + \
832 encode_getattr_maxsz)
833#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
834 decode_sequence_maxsz + \
835 decode_putfh_maxsz + \
836 decode_layoutcommit_maxsz + \
837 decode_getattr_maxsz)
Benny Halevycbe82602011-05-22 19:52:37 +0300838#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
839 encode_sequence_maxsz + \
840 encode_putfh_maxsz + \
841 encode_layoutreturn_maxsz)
842#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
843 decode_sequence_maxsz + \
844 decode_putfh_maxsz + \
845 decode_layoutreturn_maxsz)
Bryan Schumakerfca78d62011-06-02 14:59:07 -0400846#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
847 encode_sequence_maxsz + \
848 encode_putrootfh_maxsz +\
849 encode_secinfo_no_name_maxsz)
850#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
851 decode_sequence_maxsz + \
852 decode_putrootfh_maxsz + \
853 decode_secinfo_no_name_maxsz)
Bryan Schumaker7d974792011-06-02 14:59:08 -0400854#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
855 encode_sequence_maxsz + \
856 encode_test_stateid_maxsz)
857#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
858 decode_sequence_maxsz + \
859 decode_test_stateid_maxsz)
Bryan Schumaker9aeda352011-06-02 14:59:09 -0400860#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
861 encode_sequence_maxsz + \
862 encode_free_stateid_maxsz)
863#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
864 decode_sequence_maxsz + \
865 decode_free_stateid_maxsz)
Alexandros Batsakis2449ea22009-12-05 13:36:55 -0500866
867const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
868 compound_encode_hdr_maxsz +
869 encode_sequence_maxsz +
870 encode_putfh_maxsz +
871 encode_getattr_maxsz) *
872 XDR_UNIT);
873
874const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
875 compound_decode_hdr_maxsz +
876 decode_sequence_maxsz +
877 decode_putfh_maxsz) *
878 XDR_UNIT);
Andy Adamsonf1c097b2013-06-25 19:02:53 -0400879
880const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH +
881 compound_decode_hdr_maxsz +
882 decode_sequence_maxsz) *
883 XDR_UNIT);
884EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead);
Benny Halevy99fe60d2009-04-01 09:22:29 -0400885#endif /* CONFIG_NFS_V4_1 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886
Trond Myklebustbca79472009-03-11 14:10:26 -0400887static const umode_t nfs_type2fmt[] = {
888 [NF4BAD] = 0,
889 [NF4REG] = S_IFREG,
890 [NF4DIR] = S_IFDIR,
891 [NF4BLK] = S_IFBLK,
892 [NF4CHR] = S_IFCHR,
893 [NF4LNK] = S_IFLNK,
894 [NF4SOCK] = S_IFSOCK,
895 [NF4FIFO] = S_IFIFO,
896 [NF4ATTRDIR] = 0,
897 [NF4NAMEDATTR] = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898};
899
900struct compound_hdr {
901 int32_t status;
902 uint32_t nops;
Andy Adamsond0179312008-12-23 16:06:17 -0500903 __be32 * nops_p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904 uint32_t taglen;
905 char * tag;
Benny Halevy0c4e8c12009-04-01 09:22:07 -0400906 uint32_t replen; /* expected reply words */
Benny Halevy66cc0422009-04-01 09:22:10 -0400907 u32 minorversion;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700908};
909
Benny Halevy13c65ce2009-08-14 17:19:25 +0300910static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
911{
912 __be32 *p = xdr_reserve_space(xdr, nbytes);
913 BUG_ON(!p);
914 return p;
915}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916
Trond Myklebustcb17e552012-03-04 18:13:56 -0500917static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
918{
919 __be32 *p;
920
921 p = xdr_reserve_space(xdr, len);
922 xdr_encode_opaque_fixed(p, buf, len);
923}
924
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
926{
Al Viro8687b632006-10-19 23:28:48 -0700927 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700928
Trond Myklebust6fdfb0bc2012-03-04 18:13:57 -0500929 p = reserve_space(xdr, 4 + len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700930 xdr_encode_opaque(p, str, len);
931}
932
Trond Myklebust4ade9822012-03-04 18:13:57 -0500933static void encode_uint32(struct xdr_stream *xdr, u32 n)
934{
935 __be32 *p;
936
937 p = reserve_space(xdr, 4);
938 *p = cpu_to_be32(n);
939}
940
Trond Myklebustff2eb682012-03-05 11:40:12 -0500941static void encode_uint64(struct xdr_stream *xdr, u64 n)
942{
943 __be32 *p;
944
945 p = reserve_space(xdr, 8);
946 xdr_encode_hyper(p, n);
947}
948
Trond Myklebust4ade9822012-03-04 18:13:57 -0500949static void encode_nfs4_seqid(struct xdr_stream *xdr,
950 const struct nfs_seqid *seqid)
951{
Trond Myklebusta6796412015-01-23 19:04:44 -0500952 if (seqid != NULL)
953 encode_uint32(xdr, seqid->sequence->counter);
954 else
955 encode_uint32(xdr, 0);
Trond Myklebust4ade9822012-03-04 18:13:57 -0500956}
957
Benny Halevy0c4e8c12009-04-01 09:22:07 -0400958static void encode_compound_hdr(struct xdr_stream *xdr,
959 struct rpc_rqst *req,
960 struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700961{
Al Viro8687b632006-10-19 23:28:48 -0700962 __be32 *p;
Trond Myklebusta17c2152010-07-31 14:29:08 -0400963 struct rpc_auth *auth = req->rq_cred->cr_auth;
Benny Halevy0c4e8c12009-04-01 09:22:07 -0400964
965 /* initialize running count of expected bytes in reply.
966 * NOTE: the replied tag SHOULD be the same is the one sent,
967 * but this is not required as a MUST for the server to do so. */
968 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700969
Trond Myklebust7fc38842012-10-15 11:51:21 -0400970 WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
Trond Myklebust6fdfb0bc2012-03-04 18:13:57 -0500971 encode_string(xdr, hdr->taglen, hdr->tag);
972 p = reserve_space(xdr, 8);
Benny Halevye75bc1c2009-08-14 17:18:54 +0300973 *p++ = cpu_to_be32(hdr->minorversion);
Andy Adamsond0179312008-12-23 16:06:17 -0500974 hdr->nops_p = p;
Benny Halevy34558512009-08-14 17:19:30 +0300975 *p = cpu_to_be32(hdr->nops);
Andy Adamsond0179312008-12-23 16:06:17 -0500976}
977
Trond Myklebustab19b482012-03-04 18:13:57 -0500978static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
979 uint32_t replen,
980 struct compound_hdr *hdr)
981{
982 encode_uint32(xdr, op);
983 hdr->nops++;
984 hdr->replen += replen;
985}
986
Andy Adamsond0179312008-12-23 16:06:17 -0500987static void encode_nops(struct compound_hdr *hdr)
988{
Trond Myklebust7fc38842012-10-15 11:51:21 -0400989 WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
Andy Adamsond0179312008-12-23 16:06:17 -0500990 *hdr->nops_p = htonl(hdr->nops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991}
992
Trond Myklebustea9d23f2012-03-04 18:13:56 -0500993static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
994{
Trond Myklebust2d2f24a2012-03-04 18:13:57 -0500995 encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
Trond Myklebustea9d23f2012-03-04 18:13:56 -0500996}
997
Linus Torvalds1da177e2005-04-16 15:20:36 -0700998static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
999{
Trond Myklebustcb17e552012-03-04 18:13:56 -05001000 encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001001}
1002
David Quigleyaa9c2662013-05-22 12:50:44 -04001003static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
1004 const struct nfs4_label *label,
Kinglong Mee5334c5b2015-08-26 21:13:37 +08001005 const struct nfs_server *server,
1006 bool excl_check)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001007{
1008 char owner_name[IDMAP_NAMESZ];
1009 char owner_group[IDMAP_NAMESZ];
1010 int owner_namelen = 0;
1011 int owner_grouplen = 0;
Al Viro8687b632006-10-19 23:28:48 -07001012 __be32 *p;
Trond Myklebustd7067b22013-07-17 17:09:01 -04001013 unsigned i;
1014 uint32_t len = 0;
1015 uint32_t bmval_len;
1016 uint32_t bmval[3] = { 0 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07001017
1018 /*
1019 * We reserve enough space to write the entire attribute buffer at once.
1020 * In the worst-case, this would be
David Quigleya09df2c2013-05-22 12:50:41 -04001021 * 16(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
1022 * = 40 bytes, plus any contribution from variable-length fields
J. Bruce Fields23ec6962005-06-22 17:16:22 +00001023 * such as owner/group.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001024 */
Trond Myklebustd7067b22013-07-17 17:09:01 -04001025 if (iap->ia_valid & ATTR_SIZE) {
1026 bmval[0] |= FATTR4_WORD0_SIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001027 len += 8;
Trond Myklebustd7067b22013-07-17 17:09:01 -04001028 }
1029 if (iap->ia_valid & ATTR_MODE) {
1030 bmval[1] |= FATTR4_WORD1_MODE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001031 len += 4;
Trond Myklebustd7067b22013-07-17 17:09:01 -04001032 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001033 if (iap->ia_valid & ATTR_UID) {
Trond Myklebuste4fd72a2011-02-22 15:44:31 -08001034 owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001035 if (owner_namelen < 0) {
Chuck Leverfe82a182007-09-11 18:01:10 -04001036 dprintk("nfs: couldn't resolve uid %d to string\n",
Eric W. Biedermane5782072013-02-01 14:22:02 -08001037 from_kuid(&init_user_ns, iap->ia_uid));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001038 /* XXX */
1039 strcpy(owner_name, "nobody");
1040 owner_namelen = sizeof("nobody") - 1;
1041 /* goto out; */
1042 }
Trond Myklebustd7067b22013-07-17 17:09:01 -04001043 bmval[1] |= FATTR4_WORD1_OWNER;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
1045 }
1046 if (iap->ia_valid & ATTR_GID) {
Trond Myklebuste4fd72a2011-02-22 15:44:31 -08001047 owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001048 if (owner_grouplen < 0) {
Chuck Leverfe82a182007-09-11 18:01:10 -04001049 dprintk("nfs: couldn't resolve gid %d to string\n",
Eric W. Biedermane5782072013-02-01 14:22:02 -08001050 from_kgid(&init_user_ns, iap->ia_gid));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001051 strcpy(owner_group, "nobody");
1052 owner_grouplen = sizeof("nobody") - 1;
1053 /* goto out; */
1054 }
Trond Myklebustd7067b22013-07-17 17:09:01 -04001055 bmval[1] |= FATTR4_WORD1_OWNER_GROUP;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001056 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
1057 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001058 if (iap->ia_valid & ATTR_ATIME_SET) {
Trond Myklebustd7067b22013-07-17 17:09:01 -04001059 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1060 len += 16;
1061 } else if (iap->ia_valid & ATTR_ATIME) {
1062 bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
1063 len += 4;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001064 }
1065 if (iap->ia_valid & ATTR_MTIME_SET) {
Trond Myklebustd7067b22013-07-17 17:09:01 -04001066 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1067 len += 16;
1068 } else if (iap->ia_valid & ATTR_MTIME) {
1069 bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
1070 len += 4;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001071 }
Kinglong Mee5334c5b2015-08-26 21:13:37 +08001072
1073 if (excl_check) {
1074 const u32 *excl_bmval = server->exclcreat_bitmask;
1075 bmval[0] &= excl_bmval[0];
1076 bmval[1] &= excl_bmval[1];
1077 bmval[2] &= excl_bmval[2];
1078
1079 if (!(excl_bmval[2] & FATTR4_WORD2_SECURITY_LABEL))
1080 label = NULL;
1081 }
1082
David Quigleyaa9c2662013-05-22 12:50:44 -04001083 if (label) {
Trond Myklebustd7067b22013-07-17 17:09:01 -04001084 len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2);
1085 bmval[2] |= FATTR4_WORD2_SECURITY_LABEL;
1086 }
1087
1088 if (bmval[2] != 0)
1089 bmval_len = 3;
1090 else if (bmval[1] != 0)
1091 bmval_len = 2;
1092 else
1093 bmval_len = 1;
1094
1095 p = reserve_space(xdr, 4 + (bmval_len << 2) + 4 + len);
1096
1097 *p++ = cpu_to_be32(bmval_len);
1098 for (i = 0; i < bmval_len; i++)
1099 *p++ = cpu_to_be32(bmval[i]);
1100 *p++ = cpu_to_be32(len);
1101
1102 if (bmval[0] & FATTR4_WORD0_SIZE)
1103 p = xdr_encode_hyper(p, iap->ia_size);
1104 if (bmval[1] & FATTR4_WORD1_MODE)
1105 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1106 if (bmval[1] & FATTR4_WORD1_OWNER)
1107 p = xdr_encode_opaque(p, owner_name, owner_namelen);
1108 if (bmval[1] & FATTR4_WORD1_OWNER_GROUP)
1109 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1110 if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
1111 if (iap->ia_valid & ATTR_ATIME_SET) {
1112 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1113 p = xdr_encode_hyper(p, (s64)iap->ia_atime.tv_sec);
1114 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
1115 } else
1116 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1117 }
1118 if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
1119 if (iap->ia_valid & ATTR_MTIME_SET) {
1120 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
1121 p = xdr_encode_hyper(p, (s64)iap->ia_mtime.tv_sec);
1122 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
1123 } else
1124 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
1125 }
1126 if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) {
David Quigleyaa9c2662013-05-22 12:50:44 -04001127 *p++ = cpu_to_be32(label->lfs);
1128 *p++ = cpu_to_be32(label->pi);
1129 *p++ = cpu_to_be32(label->len);
1130 p = xdr_encode_opaque_fixed(p, label->label, label->len);
1131 }
Andy Adamson6c0195a2008-12-23 16:06:15 -05001132
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133/* out: */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001134}
1135
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001136static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001137{
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001138 encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
1139 encode_uint32(xdr, access);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001140}
1141
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001142static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001143{
Trond Myklebustab19b482012-03-04 18:13:57 -05001144 encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
Trond Myklebust4ade9822012-03-04 18:13:57 -05001145 encode_nfs4_seqid(xdr, arg->seqid);
Trond Myklebust566fcec2015-01-23 15:32:46 -05001146 encode_nfs4_stateid(xdr, &arg->stateid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001147}
1148
Fred Isaman0b7c0152012-04-20 14:47:39 -04001149static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001150{
Al Viro8687b632006-10-19 23:28:48 -07001151 __be32 *p;
Andy Adamson6c0195a2008-12-23 16:06:15 -05001152
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001153 encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
1154 p = reserve_space(xdr, 12);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001155 p = xdr_encode_hyper(p, args->offset);
Benny Halevy34558512009-08-14 17:19:30 +03001156 *p = cpu_to_be32(args->count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001157}
1158
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001159static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001160{
Al Viro8687b632006-10-19 23:28:48 -07001161 __be32 *p;
Andy Adamson6c0195a2008-12-23 16:06:15 -05001162
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001163 encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
1164 encode_uint32(xdr, create->ftype);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001165
1166 switch (create->ftype) {
1167 case NF4LNK:
Benny Halevy13c65ce2009-08-14 17:19:25 +03001168 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001169 *p = cpu_to_be32(create->u.symlink.len);
Chuck Lever2fcc2132015-08-03 13:04:26 -04001170 xdr_write_pages(xdr, create->u.symlink.pages, 0,
1171 create->u.symlink.len);
1172 xdr->buf->flags |= XDRBUF_WRITE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001173 break;
1174
1175 case NF4BLK: case NF4CHR:
Benny Halevy13c65ce2009-08-14 17:19:25 +03001176 p = reserve_space(xdr, 8);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001177 *p++ = cpu_to_be32(create->u.device.specdata1);
Benny Halevy34558512009-08-14 17:19:30 +03001178 *p = cpu_to_be32(create->u.device.specdata2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001179 break;
1180
1181 default:
1182 break;
1183 }
1184
Benny Halevy811652b2009-08-14 17:19:34 +03001185 encode_string(xdr, create->name->len, create->name->name);
Kinglong Mee5334c5b2015-08-26 21:13:37 +08001186 encode_attrs(xdr, create->attrs, create->label, create->server, false);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001187}
1188
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001189static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001190{
Andy Adamson05d564f2008-12-23 16:06:15 -05001191 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001192
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001193 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1194 p = reserve_space(xdr, 8);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001195 *p++ = cpu_to_be32(1);
Benny Halevy34558512009-08-14 17:19:30 +03001196 *p = cpu_to_be32(bitmap);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001197}
1198
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001199static 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 -07001200{
Andy Adamson05d564f2008-12-23 16:06:15 -05001201 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001202
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001203 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1204 p = reserve_space(xdr, 12);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001205 *p++ = cpu_to_be32(2);
1206 *p++ = cpu_to_be32(bm0);
Benny Halevy34558512009-08-14 17:19:30 +03001207 *p = cpu_to_be32(bm1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001208}
1209
Fred Isamandae100c2011-07-30 20:52:37 -04001210static void
1211encode_getattr_three(struct xdr_stream *xdr,
1212 uint32_t bm0, uint32_t bm1, uint32_t bm2,
1213 struct compound_hdr *hdr)
1214{
1215 __be32 *p;
1216
Trond Myklebustab19b482012-03-04 18:13:57 -05001217 encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
Fred Isamandae100c2011-07-30 20:52:37 -04001218 if (bm2) {
1219 p = reserve_space(xdr, 16);
1220 *p++ = cpu_to_be32(3);
1221 *p++ = cpu_to_be32(bm0);
1222 *p++ = cpu_to_be32(bm1);
1223 *p = cpu_to_be32(bm2);
1224 } else if (bm1) {
1225 p = reserve_space(xdr, 12);
1226 *p++ = cpu_to_be32(2);
1227 *p++ = cpu_to_be32(bm0);
1228 *p = cpu_to_be32(bm1);
1229 } else {
1230 p = reserve_space(xdr, 8);
1231 *p++ = cpu_to_be32(1);
1232 *p = cpu_to_be32(bm0);
1233 }
Fred Isamandae100c2011-07-30 20:52:37 -04001234}
1235
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001236static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001237{
David Quigleya09df2c2013-05-22 12:50:41 -04001238 encode_getattr_three(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1239 bitmask[1] & nfs4_fattr_bitmap[1],
1240 bitmask[2] & nfs4_fattr_bitmap[2],
1241 hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001242}
1243
Andy Adamson88034c32012-05-23 05:02:34 -04001244static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
Trond Myklebust1549210f2012-06-05 09:16:47 -04001245 const u32 *open_bitmap,
Andy Adamson88034c32012-05-23 05:02:34 -04001246 struct compound_hdr *hdr)
1247{
1248 encode_getattr_three(xdr,
Trond Myklebust1549210f2012-06-05 09:16:47 -04001249 bitmask[0] & open_bitmap[0],
1250 bitmask[1] & open_bitmap[1],
1251 bitmask[2] & open_bitmap[2],
Andy Adamson88034c32012-05-23 05:02:34 -04001252 hdr);
1253}
1254
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001255static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001256{
Fred Isamandae100c2011-07-30 20:52:37 -04001257 encode_getattr_three(xdr,
1258 bitmask[0] & nfs4_fsinfo_bitmap[0],
1259 bitmask[1] & nfs4_fsinfo_bitmap[1],
1260 bitmask[2] & nfs4_fsinfo_bitmap[2],
1261 hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262}
1263
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001264static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
Manoj Naik830b8e32006-06-09 09:34:25 -04001265{
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001266 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1267 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
Manoj Naik830b8e32006-06-09 09:34:25 -04001268}
1269
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001270static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001271{
Trond Myklebustab19b482012-03-04 18:13:57 -05001272 encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001273}
1274
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001275static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001276{
Trond Myklebustab19b482012-03-04 18:13:57 -05001277 encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
Trond Myklebust6fdfb0bc2012-03-04 18:13:57 -05001278 encode_string(xdr, name->len, name->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001279}
1280
Trond Myklebust911d1aa2006-01-03 09:55:16 +01001281static inline int nfs4_lock_type(struct file_lock *fl, int block)
1282{
Jeff Laytonf44106e2012-07-23 15:49:56 -04001283 if (fl->fl_type == F_RDLCK)
Trond Myklebust911d1aa2006-01-03 09:55:16 +01001284 return block ? NFS4_READW_LT : NFS4_READ_LT;
1285 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1286}
1287
1288static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1289{
1290 if (fl->fl_end == OFFSET_MAX)
1291 return ~(uint64_t)0;
1292 return fl->fl_end - fl->fl_start + 1;
1293}
1294
Trond Myklebustdaccbde2010-06-25 18:11:43 -04001295static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1296{
1297 __be32 *p;
1298
Trond Myklebustd035c362010-12-21 10:45:27 -05001299 p = reserve_space(xdr, 32);
Trond Myklebustdaccbde2010-06-25 18:11:43 -04001300 p = xdr_encode_hyper(p, lowner->clientid);
Trond Myklebustd035c362010-12-21 10:45:27 -05001301 *p++ = cpu_to_be32(20);
Trond Myklebustdaccbde2010-06-25 18:11:43 -04001302 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
Trond Myklebustd035c362010-12-21 10:45:27 -05001303 *p++ = cpu_to_be32(lowner->s_dev);
Trond Myklebustdaccbde2010-06-25 18:11:43 -04001304 xdr_encode_hyper(p, lowner->id);
1305}
1306
Linus Torvalds1da177e2005-04-16 15:20:36 -07001307/*
1308 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1309 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1310 */
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001311static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001312{
Al Viro8687b632006-10-19 23:28:48 -07001313 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001314
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001315 encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
1316 p = reserve_space(xdr, 28);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001317 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1318 *p++ = cpu_to_be32(args->reclaim);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001319 p = xdr_encode_hyper(p, args->fl->fl_start);
1320 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
Benny Halevy34558512009-08-14 17:19:30 +03001321 *p = cpu_to_be32(args->new_lock_owner);
Trond Myklebust911d1aa2006-01-03 09:55:16 +01001322 if (args->new_lock_owner){
Trond Myklebust4ade9822012-03-04 18:13:57 -05001323 encode_nfs4_seqid(xdr, args->open_seqid);
Trond Myklebust425c1d42015-01-24 14:57:53 -05001324 encode_nfs4_stateid(xdr, &args->open_stateid);
Trond Myklebust4ade9822012-03-04 18:13:57 -05001325 encode_nfs4_seqid(xdr, args->lock_seqid);
Trond Myklebustdaccbde2010-06-25 18:11:43 -04001326 encode_lockowner(xdr, &args->lock_owner);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001327 }
1328 else {
Trond Myklebust425c1d42015-01-24 14:57:53 -05001329 encode_nfs4_stateid(xdr, &args->lock_stateid);
Trond Myklebust4ade9822012-03-04 18:13:57 -05001330 encode_nfs4_seqid(xdr, args->lock_seqid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001331 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001332}
1333
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001334static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335{
Al Viro8687b632006-10-19 23:28:48 -07001336 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001337
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001338 encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
1339 p = reserve_space(xdr, 20);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001340 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
Benny Halevyb95be5a2009-08-14 17:19:01 +03001341 p = xdr_encode_hyper(p, args->fl->fl_start);
1342 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
Trond Myklebustdaccbde2010-06-25 18:11:43 -04001343 encode_lockowner(xdr, &args->lock_owner);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001344}
1345
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001346static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001347{
Al Viro8687b632006-10-19 23:28:48 -07001348 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001349
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001350 encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
1351 encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
Trond Myklebust4ade9822012-03-04 18:13:57 -05001352 encode_nfs4_seqid(xdr, args->seqid);
Trond Myklebust425c1d42015-01-24 14:57:53 -05001353 encode_nfs4_stateid(xdr, &args->stateid);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001354 p = reserve_space(xdr, 16);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001355 p = xdr_encode_hyper(p, args->fl->fl_start);
Benny Halevy34558512009-08-14 17:19:30 +03001356 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001357}
1358
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04001359static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1360{
Trond Myklebustab19b482012-03-04 18:13:57 -05001361 encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04001362 encode_lockowner(xdr, lowner);
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04001363}
1364
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001365static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001366{
Trond Myklebustab19b482012-03-04 18:13:57 -05001367 encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
Trond Myklebust6fdfb0bc2012-03-04 18:13:57 -05001368 encode_string(xdr, name->len, name->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001369}
1370
Trond Myklebust6ae37332015-01-30 14:21:14 -05001371static void encode_share_access(struct xdr_stream *xdr, u32 share_access)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001372{
Al Viro8687b632006-10-19 23:28:48 -07001373 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001374
Benny Halevy13c65ce2009-08-14 17:19:25 +03001375 p = reserve_space(xdr, 8);
Trond Myklebust6ae37332015-01-30 14:21:14 -05001376 *p++ = cpu_to_be32(share_access);
Benny Halevy34558512009-08-14 17:19:30 +03001377 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001378}
1379
1380static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1381{
Al Viro8687b632006-10-19 23:28:48 -07001382 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383 /*
1384 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1385 * owner 4 = 32
1386 */
Trond Myklebust4ade9822012-03-04 18:13:57 -05001387 encode_nfs4_seqid(xdr, arg->seqid);
Trond Myklebust6ae37332015-01-30 14:21:14 -05001388 encode_share_access(xdr, arg->share_access);
Trond Myklebust95b72eb2012-04-20 19:24:51 -04001389 p = reserve_space(xdr, 36);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001390 p = xdr_encode_hyper(p, arg->clientid);
Trond Myklebust95b72eb2012-04-20 19:24:51 -04001391 *p++ = cpu_to_be32(24);
Benny Halevy93f0cf22009-08-14 17:19:06 +03001392 p = xdr_encode_opaque_fixed(p, "open id:", 8);
Trond Myklebustd035c362010-12-21 10:45:27 -05001393 *p++ = cpu_to_be32(arg->server->s_dev);
Trond Myklebust95b72eb2012-04-20 19:24:51 -04001394 *p++ = cpu_to_be32(arg->id.uniquifier);
1395 xdr_encode_hyper(p, arg->id.create_time);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001396}
1397
1398static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1399{
Al Viro8687b632006-10-19 23:28:48 -07001400 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001401
Benny Halevy13c65ce2009-08-14 17:19:25 +03001402 p = reserve_space(xdr, 4);
Trond Myklebust549b19c2013-04-16 18:42:34 -04001403 switch(arg->createmode) {
1404 case NFS4_CREATE_UNCHECKED:
Benny Halevy34558512009-08-14 17:19:30 +03001405 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
Kinglong Mee5334c5b2015-08-26 21:13:37 +08001406 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, false);
Andy Adamson05d564f2008-12-23 16:06:15 -05001407 break;
Trond Myklebust549b19c2013-04-16 18:42:34 -04001408 case NFS4_CREATE_GUARDED:
1409 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
Kinglong Mee5334c5b2015-08-26 21:13:37 +08001410 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, false);
Trond Myklebust549b19c2013-04-16 18:42:34 -04001411 break;
1412 case NFS4_CREATE_EXCLUSIVE:
1413 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1414 encode_nfs4_verifier(xdr, &arg->u.verifier);
1415 break;
1416 case NFS4_CREATE_EXCLUSIVE4_1:
1417 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1418 encode_nfs4_verifier(xdr, &arg->u.verifier);
Kinglong Mee5334c5b2015-08-26 21:13:37 +08001419 encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, true);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001420 }
1421}
1422
1423static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1424{
Al Viro8687b632006-10-19 23:28:48 -07001425 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001426
Benny Halevy13c65ce2009-08-14 17:19:25 +03001427 p = reserve_space(xdr, 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001428 switch (arg->open_flags & O_CREAT) {
Andy Adamson05d564f2008-12-23 16:06:15 -05001429 case 0:
Benny Halevy34558512009-08-14 17:19:30 +03001430 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
Andy Adamson05d564f2008-12-23 16:06:15 -05001431 break;
1432 default:
Benny Halevy34558512009-08-14 17:19:30 +03001433 *p = cpu_to_be32(NFS4_OPEN_CREATE);
Andy Adamson05d564f2008-12-23 16:06:15 -05001434 encode_createmode(xdr, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001435 }
1436}
1437
Trond Myklebustbd7bf9d2008-12-23 15:21:53 -05001438static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001439{
Al Viro8687b632006-10-19 23:28:48 -07001440 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001441
Benny Halevy13c65ce2009-08-14 17:19:25 +03001442 p = reserve_space(xdr, 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001443 switch (delegation_type) {
Andy Adamson05d564f2008-12-23 16:06:15 -05001444 case 0:
Benny Halevy34558512009-08-14 17:19:30 +03001445 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
Andy Adamson05d564f2008-12-23 16:06:15 -05001446 break;
1447 case FMODE_READ:
Benny Halevy34558512009-08-14 17:19:30 +03001448 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
Andy Adamson05d564f2008-12-23 16:06:15 -05001449 break;
1450 case FMODE_WRITE|FMODE_READ:
Benny Halevy34558512009-08-14 17:19:30 +03001451 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
Andy Adamson05d564f2008-12-23 16:06:15 -05001452 break;
1453 default:
1454 BUG();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001455 }
1456}
1457
1458static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1459{
Al Viro8687b632006-10-19 23:28:48 -07001460 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001461
Benny Halevy13c65ce2009-08-14 17:19:25 +03001462 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001463 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001464 encode_string(xdr, name->len, name->name);
1465}
1466
Trond Myklebustbd7bf9d2008-12-23 15:21:53 -05001467static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001468{
Al Viro8687b632006-10-19 23:28:48 -07001469 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001470
Benny Halevy13c65ce2009-08-14 17:19:25 +03001471 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001472 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001473 encode_delegation_type(xdr, type);
1474}
1475
1476static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1477{
Al Viro8687b632006-10-19 23:28:48 -07001478 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001479
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001480 p = reserve_space(xdr, 4);
1481 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1482 encode_nfs4_stateid(xdr, stateid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001483 encode_string(xdr, name->len, name->name);
1484}
1485
Trond Myklebustd9fc6612013-03-15 15:39:06 -04001486static inline void encode_claim_fh(struct xdr_stream *xdr)
1487{
1488 __be32 *p;
1489
1490 p = reserve_space(xdr, 4);
1491 *p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
1492}
1493
1494static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1495{
1496 __be32 *p;
1497
1498 p = reserve_space(xdr, 4);
1499 *p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1500 encode_nfs4_stateid(xdr, stateid);
1501}
1502
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001503static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001504{
Trond Myklebustab19b482012-03-04 18:13:57 -05001505 encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001506 encode_openhdr(xdr, arg);
1507 encode_opentype(xdr, arg);
1508 switch (arg->claim) {
Andy Adamson05d564f2008-12-23 16:06:15 -05001509 case NFS4_OPEN_CLAIM_NULL:
1510 encode_claim_null(xdr, arg->name);
1511 break;
1512 case NFS4_OPEN_CLAIM_PREVIOUS:
1513 encode_claim_previous(xdr, arg->u.delegation_type);
1514 break;
1515 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1516 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1517 break;
Trond Myklebustd9fc6612013-03-15 15:39:06 -04001518 case NFS4_OPEN_CLAIM_FH:
1519 encode_claim_fh(xdr);
1520 break;
1521 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1522 encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
1523 break;
Andy Adamson05d564f2008-12-23 16:06:15 -05001524 default:
1525 BUG();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001526 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001527}
1528
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001529static 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 -07001530{
Trond Myklebustab19b482012-03-04 18:13:57 -05001531 encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001532 encode_nfs4_stateid(xdr, arg->stateid);
Trond Myklebust4ade9822012-03-04 18:13:57 -05001533 encode_nfs4_seqid(xdr, arg->seqid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001534}
1535
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001536static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001537{
Trond Myklebustab19b482012-03-04 18:13:57 -05001538 encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
Trond Myklebust566fcec2015-01-23 15:32:46 -05001539 encode_nfs4_stateid(xdr, &arg->stateid);
Trond Myklebust4ade9822012-03-04 18:13:57 -05001540 encode_nfs4_seqid(xdr, arg->seqid);
Trond Myklebust6ae37332015-01-30 14:21:14 -05001541 encode_share_access(xdr, arg->share_access);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001542}
1543
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001544static void
Andy Adamsond0179312008-12-23 16:06:17 -05001545encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001546{
Trond Myklebustab19b482012-03-04 18:13:57 -05001547 encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
Trond Myklebust6fdfb0bc2012-03-04 18:13:57 -05001548 encode_string(xdr, fh->size, fh->data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001549}
1550
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001551static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001552{
Trond Myklebustab19b482012-03-04 18:13:57 -05001553 encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001554}
1555
Anna Schumaker3c6b8992014-05-06 09:12:24 -04001556static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1557 struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001558{
Al Viro8687b632006-10-19 23:28:48 -07001559 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001560
Trond Myklebustab19b482012-03-04 18:13:57 -05001561 encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
Trond Myklebust9b206142013-03-17 15:52:00 -04001562 encode_nfs4_stateid(xdr, &args->stateid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001563
Benny Halevy13c65ce2009-08-14 17:19:25 +03001564 p = reserve_space(xdr, 12);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001565 p = xdr_encode_hyper(p, args->offset);
Benny Halevy34558512009-08-14 17:19:30 +03001566 *p = cpu_to_be32(args->count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001567}
1568
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001569static 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 -07001570{
David Quigleyaa9c2662013-05-22 12:50:44 -04001571 uint32_t attrs[3] = {
Trond Myklebust28331a42011-04-27 13:47:52 -04001572 FATTR4_WORD0_RDATTR_ERROR,
1573 FATTR4_WORD1_MOUNTED_ON_FILEID,
1574 };
Trond Myklebust6f7a35b2010-10-24 12:11:42 -04001575 uint32_t dircount = readdir->count >> 1;
Chuck Levercd937102012-03-02 17:14:31 -05001576 __be32 *p, verf[2];
Trond Myklebustd204c5d2013-11-04 13:23:59 -05001577 uint32_t attrlen = 0;
1578 unsigned int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001579
Bryan Schumaker82f2e542010-10-21 16:33:18 -04001580 if (readdir->plus) {
1581 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
Trond Myklebust28331a42011-04-27 13:47:52 -04001582 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
Bryan Schumaker82f2e542010-10-21 16:33:18 -04001583 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1584 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1585 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1586 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
Trond Myklebustd204c5d2013-11-04 13:23:59 -05001587 attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
Trond Myklebust6f7a35b2010-10-24 12:11:42 -04001588 dircount >>= 1;
Bryan Schumaker82f2e542010-10-21 16:33:18 -04001589 }
Trond Myklebust28331a42011-04-27 13:47:52 -04001590 /* Use mounted_on_fileid only if the server supports it */
1591 if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
1592 attrs[0] |= FATTR4_WORD0_FILEID;
Trond Myklebustd204c5d2013-11-04 13:23:59 -05001593 for (i = 0; i < ARRAY_SIZE(attrs); i++) {
1594 attrs[i] &= readdir->bitmask[i];
1595 if (attrs[i] != 0)
1596 attrlen = i+1;
1597 }
Bryan Schumaker82f2e542010-10-21 16:33:18 -04001598
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001599 encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
Trond Myklebustff2eb682012-03-05 11:40:12 -05001600 encode_uint64(xdr, readdir->cookie);
Chuck Levercd937102012-03-02 17:14:31 -05001601 encode_nfs4_verifier(xdr, &readdir->verifier);
Trond Myklebustd204c5d2013-11-04 13:23:59 -05001602 p = reserve_space(xdr, 12 + (attrlen << 2));
Trond Myklebust6f7a35b2010-10-24 12:11:42 -04001603 *p++ = cpu_to_be32(dircount);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001604 *p++ = cpu_to_be32(readdir->count);
Trond Myklebustd204c5d2013-11-04 13:23:59 -05001605 *p++ = cpu_to_be32(attrlen);
1606 for (i = 0; i < attrlen; i++)
1607 *p++ = cpu_to_be32(attrs[i]);
Chuck Levercd937102012-03-02 17:14:31 -05001608 memcpy(verf, readdir->verifier.data, sizeof(verf));
David Quigleyaa9c2662013-05-22 12:50:44 -04001609
1610 dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
Fred Isaman44109242008-04-02 15:21:15 +03001611 __func__,
Trond Myklebusteadf4592005-06-22 17:16:39 +00001612 (unsigned long long)readdir->cookie,
Chuck Levercd937102012-03-02 17:14:31 -05001613 verf[0], verf[1],
Trond Myklebusteadf4592005-06-22 17:16:39 +00001614 attrs[0] & readdir->bitmask[0],
David Quigleyaa9c2662013-05-22 12:50:44 -04001615 attrs[1] & readdir->bitmask[1],
1616 attrs[2] & readdir->bitmask[2]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001617}
1618
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001619static 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 -07001620{
Trond Myklebustab19b482012-03-04 18:13:57 -05001621 encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001622}
1623
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001624static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001625{
Trond Myklebustab19b482012-03-04 18:13:57 -05001626 encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
Trond Myklebust6fdfb0bc2012-03-04 18:13:57 -05001627 encode_string(xdr, name->len, name->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001628}
1629
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001630static 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 -07001631{
Trond Myklebustab19b482012-03-04 18:13:57 -05001632 encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
Benny Halevy811652b2009-08-14 17:19:34 +03001633 encode_string(xdr, oldname->len, oldname->name);
1634 encode_string(xdr, newname->len, newname->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001635}
1636
Chuck Leverbb4dae52012-03-01 17:01:48 -05001637static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
1638 struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001639{
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001640 encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
Trond Myklebustff2eb682012-03-05 11:40:12 -05001641 encode_uint64(xdr, clid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001642}
1643
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001644static void
Andy Adamsond0179312008-12-23 16:06:17 -05001645encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
Trond Myklebust56ae19f2005-10-27 22:12:40 -04001646{
Trond Myklebustab19b482012-03-04 18:13:57 -05001647 encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
Trond Myklebust56ae19f2005-10-27 22:12:40 -04001648}
1649
Chuck Lever9f06c712010-12-14 14:59:18 +00001650static void
Andy Adamsond0179312008-12-23 16:06:17 -05001651encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
J. Bruce Fields23ec6962005-06-22 17:16:22 +00001652{
Al Viro8687b632006-10-19 23:28:48 -07001653 __be32 *p;
J. Bruce Fields23ec6962005-06-22 17:16:22 +00001654
Trond Myklebustab19b482012-03-04 18:13:57 -05001655 encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001656 encode_nfs4_stateid(xdr, &zero_stateid);
Benny Halevy13c65ce2009-08-14 17:19:25 +03001657 p = reserve_space(xdr, 2*4);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001658 *p++ = cpu_to_be32(1);
Benny Halevy34558512009-08-14 17:19:30 +03001659 *p = cpu_to_be32(FATTR4_WORD0_ACL);
Benny Halevy13c65ce2009-08-14 17:19:25 +03001660 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001661 *p = cpu_to_be32(arg->acl_len);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00001662 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00001663}
1664
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001665static void
Andy Adamsond0179312008-12-23 16:06:17 -05001666encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001667{
Trond Myklebustab19b482012-03-04 18:13:57 -05001668 encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001669}
1670
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001671static 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 -07001672{
Trond Myklebustab19b482012-03-04 18:13:57 -05001673 encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001674 encode_nfs4_stateid(xdr, &arg->stateid);
Kinglong Mee5334c5b2015-08-26 21:13:37 +08001675 encode_attrs(xdr, arg->iap, arg->label, server, false);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001676}
1677
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001678static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001679{
Al Viro8687b632006-10-19 23:28:48 -07001680 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001681
Trond Myklebust70019512012-03-04 20:49:32 -05001682 encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
Chuck Levercd937102012-03-02 17:14:31 -05001683 encode_nfs4_verifier(xdr, setclientid->sc_verifier);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001684
Jeff Layton3a6bb732015-06-09 19:43:57 -04001685 encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id),
1686 setclientid->sc_clnt->cl_owner_id);
Benny Halevy13c65ce2009-08-14 17:19:25 +03001687 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001688 *p = cpu_to_be32(setclientid->sc_prog);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001689 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1690 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
Benny Halevy13c65ce2009-08-14 17:19:25 +03001691 p = reserve_space(xdr, 4);
Jeff Layton3a6bb732015-06-09 19:43:57 -04001692 *p = cpu_to_be32(setclientid->sc_clnt->cl_cb_ident);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001693}
1694
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04001695static 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 -07001696{
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001697 encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
1698 decode_setclientid_confirm_maxsz, hdr);
Trond Myklebustff2eb682012-03-05 11:40:12 -05001699 encode_uint64(xdr, arg->clientid);
Chuck Levercd937102012-03-02 17:14:31 -05001700 encode_nfs4_verifier(xdr, &arg->confirm);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001701}
1702
Anna Schumaker3c6b8992014-05-06 09:12:24 -04001703static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
1704 struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001705{
Al Viro8687b632006-10-19 23:28:48 -07001706 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001707
Trond Myklebustab19b482012-03-04 18:13:57 -05001708 encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
Trond Myklebust9b206142013-03-17 15:52:00 -04001709 encode_nfs4_stateid(xdr, &args->stateid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001710
Benny Halevy13c65ce2009-08-14 17:19:25 +03001711 p = reserve_space(xdr, 16);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001712 p = xdr_encode_hyper(p, args->offset);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001713 *p++ = cpu_to_be32(args->stable);
Benny Halevy34558512009-08-14 17:19:30 +03001714 *p = cpu_to_be32(args->count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001715
1716 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001717}
1718
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001719static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001720{
Trond Myklebustab19b482012-03-04 18:13:57 -05001721 encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001722 encode_nfs4_stateid(xdr, stateid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001723}
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001724
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00001725static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
1726{
Trond Myklebustab19b482012-03-04 18:13:57 -05001727 encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
Trond Myklebust6fdfb0bc2012-03-04 18:13:57 -05001728 encode_string(xdr, name->len, name->name);
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00001729}
1730
Benny Halevy99fe60d2009-04-01 09:22:29 -04001731#if defined(CONFIG_NFS_V4_1)
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001732/* NFSv4.1 operations */
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04001733static void encode_bind_conn_to_session(struct xdr_stream *xdr,
Trond Myklebust71a097c2015-02-18 09:27:18 -08001734 struct nfs41_bind_conn_to_session_args *args,
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04001735 struct compound_hdr *hdr)
1736{
1737 __be32 *p;
1738
1739 encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
1740 decode_bind_conn_to_session_maxsz, hdr);
Trond Myklebust71a097c2015-02-18 09:27:18 -08001741 encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN);
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04001742 p = xdr_reserve_space(xdr, 8);
Trond Myklebust71a097c2015-02-18 09:27:18 -08001743 *p++ = cpu_to_be32(args->dir);
1744 *p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0);
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04001745}
1746
Weston Andros Adamson2031cd12013-08-13 16:37:32 -04001747static void encode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
1748{
1749 unsigned int i;
1750 encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS);
1751 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++)
1752 encode_uint32(xdr, op_map->u.words[i]);
1753}
1754
Benny Halevy99fe60d2009-04-01 09:22:29 -04001755static void encode_exchange_id(struct xdr_stream *xdr,
1756 struct nfs41_exchange_id_args *args,
1757 struct compound_hdr *hdr)
1758{
1759 __be32 *p;
Jim Reesd751f742012-11-16 18:12:06 -05001760 char impl_name[IMPL_NAME_LIMIT];
Weston Andros Adamsondb8ac8b2012-02-17 15:20:24 -05001761 int len = 0;
Benny Halevy99fe60d2009-04-01 09:22:29 -04001762
Trond Myklebust70019512012-03-04 20:49:32 -05001763 encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
Chuck Levercd937102012-03-02 17:14:31 -05001764 encode_nfs4_verifier(xdr, args->verifier);
Benny Halevy99fe60d2009-04-01 09:22:29 -04001765
Jeff Layton3a6bb732015-06-09 19:43:57 -04001766 encode_string(xdr, strlen(args->client->cl_owner_id),
1767 args->client->cl_owner_id);
Benny Halevy99fe60d2009-04-01 09:22:29 -04001768
Weston Andros Adamson2031cd12013-08-13 16:37:32 -04001769 encode_uint32(xdr, args->flags);
1770 encode_uint32(xdr, args->state_protect.how);
1771
1772 switch (args->state_protect.how) {
1773 case SP4_NONE:
1774 break;
1775 case SP4_MACH_CRED:
1776 encode_op_map(xdr, &args->state_protect.enforce);
1777 encode_op_map(xdr, &args->state_protect.allow);
1778 break;
1779 default:
1780 WARN_ON_ONCE(1);
1781 break;
1782 }
Weston Andros Adamsondb8ac8b2012-02-17 15:20:24 -05001783
1784 if (send_implementation_id &&
1785 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
1786 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
Jim Reesd751f742012-11-16 18:12:06 -05001787 <= sizeof(impl_name) + 1)
Weston Andros Adamsondb8ac8b2012-02-17 15:20:24 -05001788 len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
1789 utsname()->sysname, utsname()->release,
1790 utsname()->version, utsname()->machine);
1791
1792 if (len > 0) {
Weston Andros Adamson2031cd12013-08-13 16:37:32 -04001793 encode_uint32(xdr, 1); /* implementation id array length=1 */
Weston Andros Adamsondb8ac8b2012-02-17 15:20:24 -05001794
1795 encode_string(xdr,
1796 sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
1797 CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
1798 encode_string(xdr, len, impl_name);
1799 /* just send zeros for nii_date - the date is in nii_name */
1800 p = reserve_space(xdr, 12);
1801 p = xdr_encode_hyper(p, 0);
1802 *p = cpu_to_be32(0);
1803 } else
Weston Andros Adamson2031cd12013-08-13 16:37:32 -04001804 encode_uint32(xdr, 0); /* implementation id array length=0 */
Benny Halevy99fe60d2009-04-01 09:22:29 -04001805}
Andy Adamsonfc931582009-04-01 09:22:31 -04001806
1807static void encode_create_session(struct xdr_stream *xdr,
1808 struct nfs41_create_session_args *args,
1809 struct compound_hdr *hdr)
1810{
1811 __be32 *p;
Andy Adamsonfc931582009-04-01 09:22:31 -04001812 struct nfs_client *clp = args->client;
Trond Myklebust89f0ff32015-01-03 14:47:43 -05001813 struct rpc_clnt *clnt = clp->cl_rpcclient;
Chuck Leverf0920752012-05-21 22:45:41 -04001814 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
Mike Sager8e0d46e2009-12-17 12:06:26 -05001815 u32 max_resp_sz_cached;
1816
1817 /*
1818 * Assumes OPEN is the biggest non-idempotent compound.
1819 * 2 is the verifier.
1820 */
1821 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1822 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
Andy Adamsonfc931582009-04-01 09:22:31 -04001823
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001824 encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
Trond Myklebust89f0ff32015-01-03 14:47:43 -05001825 p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12);
Trond Myklebust79969dd2015-02-18 11:30:18 -08001826 p = xdr_encode_hyper(p, args->clientid);
1827 *p++ = cpu_to_be32(args->seqid); /*Sequence id */
Benny Halevye75bc1c2009-08-14 17:18:54 +03001828 *p++ = cpu_to_be32(args->flags); /*flags */
Andy Adamsonfc931582009-04-01 09:22:31 -04001829
Andy Adamsonfc931582009-04-01 09:22:31 -04001830 /* Fore Channel */
Benny Halevyc9c30dd2011-06-11 17:08:39 -04001831 *p++ = cpu_to_be32(0); /* header padding size */
Benny Halevye75bc1c2009-08-14 17:18:54 +03001832 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1833 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
Mike Sager8e0d46e2009-12-17 12:06:26 -05001834 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
Benny Halevye75bc1c2009-08-14 17:18:54 +03001835 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1836 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1837 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
Andy Adamsonfc931582009-04-01 09:22:31 -04001838
1839 /* Back Channel */
Benny Halevyc9c30dd2011-06-11 17:08:39 -04001840 *p++ = cpu_to_be32(0); /* header padding size */
Benny Halevye75bc1c2009-08-14 17:18:54 +03001841 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1842 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1843 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1844 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1845 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1846 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
Andy Adamsonfc931582009-04-01 09:22:31 -04001847
Benny Halevye75bc1c2009-08-14 17:18:54 +03001848 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
Benny Halevye75bc1c2009-08-14 17:18:54 +03001849 *p++ = cpu_to_be32(1);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001850 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
Andy Adamsonfc931582009-04-01 09:22:31 -04001851
1852 /* authsys_parms rfc1831 */
Trond Myklebust17f26b12013-08-21 15:48:42 -04001853 *p++ = cpu_to_be32(nn->boot_time.tv_nsec); /* stamp */
Trond Myklebust89f0ff32015-01-03 14:47:43 -05001854 p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001855 *p++ = cpu_to_be32(0); /* UID */
1856 *p++ = cpu_to_be32(0); /* GID */
Benny Halevy34558512009-08-14 17:19:30 +03001857 *p = cpu_to_be32(0); /* No more gids */
Andy Adamsonfc931582009-04-01 09:22:31 -04001858}
Andy Adamson0f3e66c2009-04-01 09:22:34 -04001859
1860static void encode_destroy_session(struct xdr_stream *xdr,
1861 struct nfs4_session *session,
1862 struct compound_hdr *hdr)
1863{
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001864 encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
1865 encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
Andy Adamson0f3e66c2009-04-01 09:22:34 -04001866}
Ricardo Labiaga180197532009-12-05 16:08:40 -05001867
Trond Myklebust66245532012-05-25 17:18:09 -04001868static void encode_destroy_clientid(struct xdr_stream *xdr,
1869 uint64_t clientid,
1870 struct compound_hdr *hdr)
1871{
1872 encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
1873 encode_uint64(xdr, clientid);
1874}
1875
Ricardo Labiaga180197532009-12-05 16:08:40 -05001876static void encode_reclaim_complete(struct xdr_stream *xdr,
1877 struct nfs41_reclaim_complete_args *args,
1878 struct compound_hdr *hdr)
1879{
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001880 encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
1881 encode_uint32(xdr, args->one_fs);
Ricardo Labiaga180197532009-12-05 16:08:40 -05001882}
Benny Halevy99fe60d2009-04-01 09:22:29 -04001883#endif /* CONFIG_NFS_V4_1 */
1884
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001885static void encode_sequence(struct xdr_stream *xdr,
1886 const struct nfs4_sequence_args *args,
1887 struct compound_hdr *hdr)
1888{
1889#if defined(CONFIG_NFS_V4_1)
Trond Myklebust2b2fa712012-11-16 12:58:36 -05001890 struct nfs4_session *session;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04001891 struct nfs4_slot_table *tp;
Trond Myklebust2b2fa712012-11-16 12:58:36 -05001892 struct nfs4_slot *slot = args->sa_slot;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04001893 __be32 *p;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001894
Trond Myklebust2b2fa712012-11-16 12:58:36 -05001895 tp = slot->table;
1896 session = tp->session;
Chuck Lever3bd23842013-08-09 12:49:19 -04001897 if (!session)
1898 return;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04001899
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001900 encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04001901
1902 /*
1903 * Sessionid + seqid + slotid + max slotid + cache_this
1904 */
1905 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1906 "max_slotid=%d cache_this=%d\n",
1907 __func__,
1908 ((u32 *)session->sess_id.data)[0],
1909 ((u32 *)session->sess_id.data)[1],
1910 ((u32 *)session->sess_id.data)[2],
1911 ((u32 *)session->sess_id.data)[3],
Trond Myklebust2b2fa712012-11-16 12:58:36 -05001912 slot->seq_nr, slot->slot_nr,
Andy Adamsonfc01cea2009-04-01 09:22:36 -04001913 tp->highest_used_slotid, args->sa_cache_this);
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001914 p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
Benny Halevy93f0cf22009-08-14 17:19:06 +03001915 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001916 *p++ = cpu_to_be32(slot->seq_nr);
Trond Myklebust2b2fa712012-11-16 12:58:36 -05001917 *p++ = cpu_to_be32(slot->slot_nr);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001918 *p++ = cpu_to_be32(tp->highest_used_slotid);
Benny Halevy34558512009-08-14 17:19:30 +03001919 *p = cpu_to_be32(args->sa_cache_this);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001920#endif /* CONFIG_NFS_V4_1 */
1921}
1922
Andy Adamsonb1f69b72010-10-20 00:18:03 -04001923#ifdef CONFIG_NFS_V4_1
1924static void
1925encode_getdeviceinfo(struct xdr_stream *xdr,
1926 const struct nfs4_getdeviceinfo_args *args,
1927 struct compound_hdr *hdr)
1928{
1929 __be32 *p;
1930
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001931 encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
Christoph Hellwig84c9dee2014-09-10 17:37:28 -07001932 p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04001933 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1934 NFS4_DEVICEID4_SIZE);
1935 *p++ = cpu_to_be32(args->pdev->layout_type);
Andy Adamsonf1c097b2013-06-25 19:02:53 -04001936 *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */
Christoph Hellwig84c9dee2014-09-10 17:37:28 -07001937
1938 p = reserve_space(xdr, 4 + 4);
1939 *p++ = cpu_to_be32(1); /* bitmap length */
Trond Myklebust4e590802015-03-09 14:01:25 -04001940 *p++ = cpu_to_be32(args->notify_types);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04001941}
1942
1943static void
1944encode_layoutget(struct xdr_stream *xdr,
1945 const struct nfs4_layoutget_args *args,
1946 struct compound_hdr *hdr)
1947{
Andy Adamsonb1f69b72010-10-20 00:18:03 -04001948 __be32 *p;
1949
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001950 encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
1951 p = reserve_space(xdr, 36);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04001952 *p++ = cpu_to_be32(0); /* Signal layout available */
1953 *p++ = cpu_to_be32(args->type);
1954 *p++ = cpu_to_be32(args->range.iomode);
1955 p = xdr_encode_hyper(p, args->range.offset);
1956 p = xdr_encode_hyper(p, args->range.length);
1957 p = xdr_encode_hyper(p, args->minlength);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001958 encode_nfs4_stateid(xdr, &args->stateid);
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001959 encode_uint32(xdr, args->maxcount);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04001960
1961 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1962 __func__,
1963 args->type,
1964 args->range.iomode,
1965 (unsigned long)args->range.offset,
1966 (unsigned long)args->range.length,
1967 args->maxcount);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04001968}
Andy Adamson863a3c62011-03-23 13:27:54 +00001969
1970static int
1971encode_layoutcommit(struct xdr_stream *xdr,
Benny Halevyac7db722011-05-22 19:53:48 +03001972 struct inode *inode,
Christoph Hellwig5f919c92014-08-21 11:09:25 -05001973 struct nfs4_layoutcommit_args *args,
Andy Adamson863a3c62011-03-23 13:27:54 +00001974 struct compound_hdr *hdr)
1975{
1976 __be32 *p;
1977
1978 dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
1979 NFS_SERVER(args->inode)->pnfs_curr_ld->id);
1980
Trond Myklebust475d4ba2012-03-05 11:27:16 -05001981 encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
1982 p = reserve_space(xdr, 20);
Andy Adamson863a3c62011-03-23 13:27:54 +00001983 /* Only whole file layouts */
1984 p = xdr_encode_hyper(p, 0); /* offset */
Peng Tao3557c6c2011-07-30 20:52:34 -04001985 p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
Trond Myklebustea9d23f2012-03-04 18:13:56 -05001986 *p = cpu_to_be32(0); /* reclaim */
1987 encode_nfs4_stateid(xdr, &args->stateid);
1988 p = reserve_space(xdr, 20);
Andy Adamson863a3c62011-03-23 13:27:54 +00001989 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1990 p = xdr_encode_hyper(p, args->lastbytewritten);
1991 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1992 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
Benny Halevyac7db722011-05-22 19:53:48 +03001993
Christoph Hellwig5f919c92014-08-21 11:09:25 -05001994 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit) {
Benny Halevyac7db722011-05-22 19:53:48 +03001995 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
1996 NFS_I(inode)->layout, xdr, args);
Christoph Hellwig5f919c92014-08-21 11:09:25 -05001997 } else {
1998 encode_uint32(xdr, args->layoutupdate_len);
1999 if (args->layoutupdate_pages) {
2000 xdr_write_pages(xdr, args->layoutupdate_pages, 0,
2001 args->layoutupdate_len);
2002 }
2003 }
Andy Adamson863a3c62011-03-23 13:27:54 +00002004
Andy Adamson863a3c62011-03-23 13:27:54 +00002005 return 0;
2006}
Benny Halevycbe82602011-05-22 19:52:37 +03002007
2008static void
2009encode_layoutreturn(struct xdr_stream *xdr,
2010 const struct nfs4_layoutreturn_args *args,
2011 struct compound_hdr *hdr)
2012{
2013 __be32 *p;
2014
Trond Myklebust475d4ba2012-03-05 11:27:16 -05002015 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
2016 p = reserve_space(xdr, 16);
Benny Halevycbe82602011-05-22 19:52:37 +03002017 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2018 *p++ = cpu_to_be32(args->layout_type);
Peng Tao15eb67c2014-11-17 09:30:36 +08002019 *p++ = cpu_to_be32(args->range.iomode);
Benny Halevycbe82602011-05-22 19:52:37 +03002020 *p = cpu_to_be32(RETURN_FILE);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05002021 p = reserve_space(xdr, 16);
Peng Tao15eb67c2014-11-17 09:30:36 +08002022 p = xdr_encode_hyper(p, args->range.offset);
2023 p = xdr_encode_hyper(p, args->range.length);
Benny Halevycbe82602011-05-22 19:52:37 +03002024 spin_lock(&args->inode->i_lock);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05002025 encode_nfs4_stateid(xdr, &args->stateid);
Benny Halevycbe82602011-05-22 19:52:37 +03002026 spin_unlock(&args->inode->i_lock);
Andy Adamson04a55542011-05-22 19:53:10 +03002027 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
2028 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
2029 NFS_I(args->inode)->layout, xdr, args);
Trond Myklebust475d4ba2012-03-05 11:27:16 -05002030 } else
2031 encode_uint32(xdr, 0);
Benny Halevycbe82602011-05-22 19:52:37 +03002032}
Bryan Schumakerfca78d62011-06-02 14:59:07 -04002033
2034static int
2035encode_secinfo_no_name(struct xdr_stream *xdr,
2036 const struct nfs41_secinfo_no_name_args *args,
2037 struct compound_hdr *hdr)
2038{
Trond Myklebust475d4ba2012-03-05 11:27:16 -05002039 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2040 encode_uint32(xdr, args->style);
Bryan Schumakerfca78d62011-06-02 14:59:07 -04002041 return 0;
2042}
Bryan Schumaker7d974792011-06-02 14:59:08 -04002043
2044static void encode_test_stateid(struct xdr_stream *xdr,
2045 struct nfs41_test_stateid_args *args,
2046 struct compound_hdr *hdr)
2047{
Trond Myklebust475d4ba2012-03-05 11:27:16 -05002048 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2049 encode_uint32(xdr, 1);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05002050 encode_nfs4_stateid(xdr, args->stateid);
Bryan Schumaker7d974792011-06-02 14:59:08 -04002051}
Bryan Schumaker9aeda352011-06-02 14:59:09 -04002052
2053static void encode_free_stateid(struct xdr_stream *xdr,
2054 struct nfs41_free_stateid_args *args,
2055 struct compound_hdr *hdr)
2056{
Trond Myklebustab19b482012-03-04 18:13:57 -05002057 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
Trond Myklebust7c1d5fa2013-05-03 14:40:01 -04002058 encode_nfs4_stateid(xdr, &args->stateid);
Bryan Schumaker9aeda352011-06-02 14:59:09 -04002059}
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002060#endif /* CONFIG_NFS_V4_1 */
2061
Linus Torvalds1da177e2005-04-16 15:20:36 -07002062/*
2063 * END OF "GENERIC" ENCODE ROUTINES.
2064 */
2065
Benny Halevy66cc0422009-04-01 09:22:10 -04002066static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2067{
2068#if defined(CONFIG_NFS_V4_1)
Chuck Lever3bd23842013-08-09 12:49:19 -04002069 struct nfs4_session *session = args->sa_slot->table->session;
2070 if (session)
2071 return session->clp->cl_mvops->minor_version;
Benny Halevy66cc0422009-04-01 09:22:10 -04002072#endif /* CONFIG_NFS_V4_1 */
2073 return 0;
2074}
2075
Linus Torvalds1da177e2005-04-16 15:20:36 -07002076/*
2077 * Encode an ACCESS request
2078 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002079static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2080 const struct nfs4_accessargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002081{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002082 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002083 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002084 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002085
Chuck Lever9f06c712010-12-14 14:59:18 +00002086 encode_compound_hdr(xdr, req, &hdr);
2087 encode_sequence(xdr, &args->seq_args, &hdr);
2088 encode_putfh(xdr, args->fh, &hdr);
2089 encode_access(xdr, args->access, &hdr);
2090 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002091 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002092}
2093
2094/*
2095 * Encode LOOKUP request
2096 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002097static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2098 const struct nfs4_lookup_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002099{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002100 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002101 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002102 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002103
Chuck Lever9f06c712010-12-14 14:59:18 +00002104 encode_compound_hdr(xdr, req, &hdr);
2105 encode_sequence(xdr, &args->seq_args, &hdr);
2106 encode_putfh(xdr, args->dir_fh, &hdr);
2107 encode_lookup(xdr, args->name, &hdr);
2108 encode_getfh(xdr, &hdr);
2109 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002110 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002111}
2112
2113/*
2114 * Encode LOOKUP_ROOT request
2115 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002116static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2117 struct xdr_stream *xdr,
2118 const struct nfs4_lookup_root_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002119{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002120 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002121 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002122 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002123
Chuck Lever9f06c712010-12-14 14:59:18 +00002124 encode_compound_hdr(xdr, req, &hdr);
2125 encode_sequence(xdr, &args->seq_args, &hdr);
2126 encode_putrootfh(xdr, &hdr);
2127 encode_getfh(xdr, &hdr);
2128 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002129 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002130}
2131
2132/*
2133 * Encode REMOVE request
2134 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002135static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2136 const struct nfs_removeargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002137{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002138 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002139 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002140 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002141
Chuck Lever9f06c712010-12-14 14:59:18 +00002142 encode_compound_hdr(xdr, req, &hdr);
2143 encode_sequence(xdr, &args->seq_args, &hdr);
2144 encode_putfh(xdr, args->fh, &hdr);
2145 encode_remove(xdr, &args->name, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002146 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002147}
2148
2149/*
2150 * Encode RENAME request
2151 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002152static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2153 const struct nfs_renameargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002154{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002155 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002156 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002157 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002158
Chuck Lever9f06c712010-12-14 14:59:18 +00002159 encode_compound_hdr(xdr, req, &hdr);
2160 encode_sequence(xdr, &args->seq_args, &hdr);
2161 encode_putfh(xdr, args->old_dir, &hdr);
2162 encode_savefh(xdr, &hdr);
2163 encode_putfh(xdr, args->new_dir, &hdr);
2164 encode_rename(xdr, args->old_name, args->new_name, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002165 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002166}
2167
2168/*
2169 * Encode LINK request
2170 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002171static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2172 const struct nfs4_link_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002173{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002174 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002175 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002176 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002177
Chuck Lever9f06c712010-12-14 14:59:18 +00002178 encode_compound_hdr(xdr, req, &hdr);
2179 encode_sequence(xdr, &args->seq_args, &hdr);
2180 encode_putfh(xdr, args->fh, &hdr);
2181 encode_savefh(xdr, &hdr);
2182 encode_putfh(xdr, args->dir_fh, &hdr);
2183 encode_link(xdr, args->name, &hdr);
Chuck Lever9f06c712010-12-14 14:59:18 +00002184 encode_restorefh(xdr, &hdr);
2185 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002186 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002187}
2188
2189/*
2190 * Encode CREATE request
2191 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002192static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2193 const struct nfs4_create_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002194{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002195 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002196 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002197 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002198
Chuck Lever9f06c712010-12-14 14:59:18 +00002199 encode_compound_hdr(xdr, req, &hdr);
2200 encode_sequence(xdr, &args->seq_args, &hdr);
2201 encode_putfh(xdr, args->dir_fh, &hdr);
Chuck Lever9f06c712010-12-14 14:59:18 +00002202 encode_create(xdr, args, &hdr);
2203 encode_getfh(xdr, &hdr);
2204 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002205 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002206}
2207
2208/*
2209 * Encode SYMLINK request
2210 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002211static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2212 const struct nfs4_create_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002213{
Chuck Lever9f06c712010-12-14 14:59:18 +00002214 nfs4_xdr_enc_create(req, xdr, args);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002215}
2216
2217/*
2218 * Encode GETATTR request
2219 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002220static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2221 const struct nfs4_getattr_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002222{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002223 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002224 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002225 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002226
Chuck Lever9f06c712010-12-14 14:59:18 +00002227 encode_compound_hdr(xdr, req, &hdr);
2228 encode_sequence(xdr, &args->seq_args, &hdr);
2229 encode_putfh(xdr, args->fh, &hdr);
2230 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002231 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002232}
2233
2234/*
2235 * Encode a CLOSE request
2236 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002237static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2238 struct nfs_closeargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002239{
Andy Adamson05d564f2008-12-23 16:06:15 -05002240 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002241 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Andy Adamson05d564f2008-12-23 16:06:15 -05002242 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002243
Chuck Lever9f06c712010-12-14 14:59:18 +00002244 encode_compound_hdr(xdr, req, &hdr);
2245 encode_sequence(xdr, &args->seq_args, &hdr);
2246 encode_putfh(xdr, args->fh, &hdr);
2247 encode_close(xdr, args, &hdr);
2248 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002249 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002250}
2251
2252/*
2253 * Encode an OPEN request
2254 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002255static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2256 struct nfs_openargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002257{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002258 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002259 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002260 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002261
Chuck Lever9f06c712010-12-14 14:59:18 +00002262 encode_compound_hdr(xdr, req, &hdr);
2263 encode_sequence(xdr, &args->seq_args, &hdr);
2264 encode_putfh(xdr, args->fh, &hdr);
Chuck Lever9f06c712010-12-14 14:59:18 +00002265 encode_open(xdr, args, &hdr);
2266 encode_getfh(xdr, &hdr);
Weston Andros Adamsonae2bb032012-10-02 14:49:52 -07002267 if (args->access)
2268 encode_access(xdr, args->access, &hdr);
Trond Myklebust1549210f2012-06-05 09:16:47 -04002269 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002270 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002271}
2272
2273/*
2274 * Encode an OPEN_CONFIRM request
2275 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002276static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2277 struct xdr_stream *xdr,
2278 struct nfs_open_confirmargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002279{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002280 struct compound_hdr hdr = {
Andy Adamsond0179312008-12-23 16:06:17 -05002281 .nops = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002282 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002283
Chuck Lever9f06c712010-12-14 14:59:18 +00002284 encode_compound_hdr(xdr, req, &hdr);
2285 encode_putfh(xdr, args->fh, &hdr);
2286 encode_open_confirm(xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002287 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002288}
2289
2290/*
2291 * Encode an OPEN request with no attributes.
2292 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002293static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2294 struct xdr_stream *xdr,
2295 struct nfs_openargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002296{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002297 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002298 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002299 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002300
Chuck Lever9f06c712010-12-14 14:59:18 +00002301 encode_compound_hdr(xdr, req, &hdr);
2302 encode_sequence(xdr, &args->seq_args, &hdr);
2303 encode_putfh(xdr, args->fh, &hdr);
2304 encode_open(xdr, args, &hdr);
Weston Andros Adamsonae2bb032012-10-02 14:49:52 -07002305 if (args->access)
2306 encode_access(xdr, args->access, &hdr);
Andy Adamsone23008e2012-10-02 21:07:32 -04002307 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002308 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002309}
2310
2311/*
2312 * Encode an OPEN_DOWNGRADE request
2313 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002314static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2315 struct xdr_stream *xdr,
2316 struct nfs_closeargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002317{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002318 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002319 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002320 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002321
Chuck Lever9f06c712010-12-14 14:59:18 +00002322 encode_compound_hdr(xdr, req, &hdr);
2323 encode_sequence(xdr, &args->seq_args, &hdr);
2324 encode_putfh(xdr, args->fh, &hdr);
2325 encode_open_downgrade(xdr, args, &hdr);
2326 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002327 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002328}
2329
2330/*
2331 * Encode a LOCK request
2332 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002333static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2334 struct nfs_lock_args *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002335{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002336 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002337 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002338 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002339
Chuck Lever9f06c712010-12-14 14:59:18 +00002340 encode_compound_hdr(xdr, req, &hdr);
2341 encode_sequence(xdr, &args->seq_args, &hdr);
2342 encode_putfh(xdr, args->fh, &hdr);
2343 encode_lock(xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002344 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002345}
2346
2347/*
2348 * Encode a LOCKT request
2349 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002350static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2351 struct nfs_lockt_args *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002352{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002353 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002354 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002355 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002356
Chuck Lever9f06c712010-12-14 14:59:18 +00002357 encode_compound_hdr(xdr, req, &hdr);
2358 encode_sequence(xdr, &args->seq_args, &hdr);
2359 encode_putfh(xdr, args->fh, &hdr);
2360 encode_lockt(xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002361 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002362}
2363
2364/*
2365 * Encode a LOCKU request
2366 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002367static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2368 struct nfs_locku_args *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002369{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002370 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002371 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002372 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002373
Chuck Lever9f06c712010-12-14 14:59:18 +00002374 encode_compound_hdr(xdr, req, &hdr);
2375 encode_sequence(xdr, &args->seq_args, &hdr);
2376 encode_putfh(xdr, args->fh, &hdr);
2377 encode_locku(xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002378 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002379}
2380
Chuck Lever9f06c712010-12-14 14:59:18 +00002381static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2382 struct xdr_stream *xdr,
2383 struct nfs_release_lockowner_args *args)
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04002384{
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04002385 struct compound_hdr hdr = {
2386 .minorversion = 0,
2387 };
2388
Chuck Lever9f06c712010-12-14 14:59:18 +00002389 encode_compound_hdr(xdr, req, &hdr);
2390 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04002391 encode_nops(&hdr);
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04002392}
2393
Linus Torvalds1da177e2005-04-16 15:20:36 -07002394/*
2395 * Encode a READLINK request
2396 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002397static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2398 const struct nfs4_readlink *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002399{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002400 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002401 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002402 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002403
Chuck Lever9f06c712010-12-14 14:59:18 +00002404 encode_compound_hdr(xdr, req, &hdr);
2405 encode_sequence(xdr, &args->seq_args, &hdr);
2406 encode_putfh(xdr, args->fh, &hdr);
2407 encode_readlink(xdr, args, req, &hdr);
Trond Myklebuste3a535e2007-07-19 10:03:38 -04002408
Benny Halevy28f56692009-04-01 09:22:09 -04002409 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
Trond Myklebuste3a535e2007-07-19 10:03:38 -04002410 args->pgbase, args->pglen);
Andy Adamsond0179312008-12-23 16:06:17 -05002411 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002412}
2413
2414/*
2415 * Encode a READDIR request
2416 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002417static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2418 const struct nfs4_readdir_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002419{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002420 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002421 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002422 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002423
Chuck Lever9f06c712010-12-14 14:59:18 +00002424 encode_compound_hdr(xdr, req, &hdr);
2425 encode_sequence(xdr, &args->seq_args, &hdr);
2426 encode_putfh(xdr, args->fh, &hdr);
2427 encode_readdir(xdr, args, req, &hdr);
Trond Myklebustd6ac02d2007-07-19 10:03:37 -04002428
Benny Halevy28f56692009-04-01 09:22:09 -04002429 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
Trond Myklebustd6ac02d2007-07-19 10:03:37 -04002430 args->pgbase, args->count);
2431 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
Benny Halevy28f56692009-04-01 09:22:09 -04002432 __func__, hdr.replen << 2, args->pages,
Trond Myklebustd6ac02d2007-07-19 10:03:37 -04002433 args->pgbase, args->count);
Andy Adamsond0179312008-12-23 16:06:17 -05002434 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002435}
2436
2437/*
2438 * Encode a READ request
2439 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002440static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
Anna Schumaker3c6b8992014-05-06 09:12:24 -04002441 struct nfs_pgio_args *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002442{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002443 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002444 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002445 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002446
Chuck Lever9f06c712010-12-14 14:59:18 +00002447 encode_compound_hdr(xdr, req, &hdr);
2448 encode_sequence(xdr, &args->seq_args, &hdr);
2449 encode_putfh(xdr, args->fh, &hdr);
2450 encode_read(xdr, args, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002451
Benny Halevy28f56692009-04-01 09:22:09 -04002452 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002453 args->pages, args->pgbase, args->count);
\"Talpey, Thomas\4f22ccc2007-09-10 13:44:58 -04002454 req->rq_rcv_buf.flags |= XDRBUF_READ;
Andy Adamsond0179312008-12-23 16:06:17 -05002455 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002456}
2457
2458/*
2459 * Encode an SETATTR request
2460 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002461static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2462 struct nfs_setattrargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002463{
Andy Adamson05d564f2008-12-23 16:06:15 -05002464 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002465 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Andy Adamson05d564f2008-12-23 16:06:15 -05002466 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002467
Chuck Lever9f06c712010-12-14 14:59:18 +00002468 encode_compound_hdr(xdr, req, &hdr);
2469 encode_sequence(xdr, &args->seq_args, &hdr);
2470 encode_putfh(xdr, args->fh, &hdr);
2471 encode_setattr(xdr, args, args->server, &hdr);
2472 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002473 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002474}
2475
2476/*
J. Bruce Fields029d1052005-06-22 17:16:22 +00002477 * Encode a GETACL request
2478 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002479static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2480 struct nfs_getaclargs *args)
J. Bruce Fields029d1052005-06-22 17:16:22 +00002481{
J. Bruce Fields029d1052005-06-22 17:16:22 +00002482 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002483 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
J. Bruce Fields029d1052005-06-22 17:16:22 +00002484 };
Benny Halevy28f56692009-04-01 09:22:09 -04002485 uint32_t replen;
J. Bruce Fields029d1052005-06-22 17:16:22 +00002486
Chuck Lever9f06c712010-12-14 14:59:18 +00002487 encode_compound_hdr(xdr, req, &hdr);
2488 encode_sequence(xdr, &args->seq_args, &hdr);
2489 encode_putfh(xdr, args->fh, &hdr);
Andy Adamsonbf118a32011-12-07 11:55:27 -05002490 replen = hdr.replen + op_decode_hdr_maxsz + 1;
Chuck Lever9f06c712010-12-14 14:59:18 +00002491 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002492
Benny Halevy28f56692009-04-01 09:22:09 -04002493 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
J. Bruce Fields029d1052005-06-22 17:16:22 +00002494 args->acl_pages, args->acl_pgbase, args->acl_len);
Andy Adamsonbf118a32011-12-07 11:55:27 -05002495
Andy Adamsond0179312008-12-23 16:06:17 -05002496 encode_nops(&hdr);
J. Bruce Fields029d1052005-06-22 17:16:22 +00002497}
2498
2499/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002500 * Encode a WRITE request
2501 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002502static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
Anna Schumaker3c6b8992014-05-06 09:12:24 -04002503 struct nfs_pgio_args *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002504{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002505 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002506 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002507 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002508
Chuck Lever9f06c712010-12-14 14:59:18 +00002509 encode_compound_hdr(xdr, req, &hdr);
2510 encode_sequence(xdr, &args->seq_args, &hdr);
2511 encode_putfh(xdr, args->fh, &hdr);
2512 encode_write(xdr, args, &hdr);
\"Talpey, Thomas\4f22ccc2007-09-10 13:44:58 -04002513 req->rq_snd_buf.flags |= XDRBUF_WRITE;
Fred Isaman7ffd1062011-03-03 15:13:46 +00002514 if (args->bitmask)
2515 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002516 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002517}
2518
2519/*
2520 * a COMMIT request
2521 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002522static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
Fred Isaman0b7c0152012-04-20 14:47:39 -04002523 struct nfs_commitargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002524{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002525 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002526 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002527 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002528
Chuck Lever9f06c712010-12-14 14:59:18 +00002529 encode_compound_hdr(xdr, req, &hdr);
2530 encode_sequence(xdr, &args->seq_args, &hdr);
2531 encode_putfh(xdr, args->fh, &hdr);
2532 encode_commit(xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002533 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002534}
2535
2536/*
2537 * FSINFO request
2538 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002539static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2540 struct nfs4_fsinfo_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002541{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002542 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002543 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002544 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002545
Chuck Lever9f06c712010-12-14 14:59:18 +00002546 encode_compound_hdr(xdr, req, &hdr);
2547 encode_sequence(xdr, &args->seq_args, &hdr);
2548 encode_putfh(xdr, args->fh, &hdr);
2549 encode_fsinfo(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002550 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002551}
2552
2553/*
2554 * a PATHCONF request
2555 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002556static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2557 const struct nfs4_pathconf_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002558{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002559 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002560 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002561 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002562
Chuck Lever9f06c712010-12-14 14:59:18 +00002563 encode_compound_hdr(xdr, req, &hdr);
2564 encode_sequence(xdr, &args->seq_args, &hdr);
2565 encode_putfh(xdr, args->fh, &hdr);
2566 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002567 &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002568 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002569}
2570
2571/*
2572 * a STATFS request
2573 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002574static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2575 const struct nfs4_statfs_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002576{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002577 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002578 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002579 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002580
Chuck Lever9f06c712010-12-14 14:59:18 +00002581 encode_compound_hdr(xdr, req, &hdr);
2582 encode_sequence(xdr, &args->seq_args, &hdr);
2583 encode_putfh(xdr, args->fh, &hdr);
2584 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002585 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002586 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002587}
2588
2589/*
2590 * GETATTR_BITMAP request
2591 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002592static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2593 struct xdr_stream *xdr,
2594 struct nfs4_server_caps_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002595{
Kinglong Mee8c612822015-08-26 21:12:58 +08002596 const u32 *bitmask = args->bitmask;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002597 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002598 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002599 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002600
Chuck Lever9f06c712010-12-14 14:59:18 +00002601 encode_compound_hdr(xdr, req, &hdr);
2602 encode_sequence(xdr, &args->seq_args, &hdr);
2603 encode_putfh(xdr, args->fhandle, &hdr);
Kinglong Mee8c612822015-08-26 21:12:58 +08002604 encode_getattr_three(xdr, bitmask[0], bitmask[1], bitmask[2], &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002605 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002606}
2607
2608/*
2609 * a RENEW request
2610 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002611static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2612 struct nfs_client *clp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002613{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002614 struct compound_hdr hdr = {
Andy Adamsond0179312008-12-23 16:06:17 -05002615 .nops = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002616 };
2617
Chuck Lever9f06c712010-12-14 14:59:18 +00002618 encode_compound_hdr(xdr, req, &hdr);
Chuck Leverbb4dae52012-03-01 17:01:48 -05002619 encode_renew(xdr, clp->cl_clientid, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002620 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002621}
2622
2623/*
2624 * a SETCLIENTID request
2625 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002626static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2627 struct xdr_stream *xdr,
2628 struct nfs4_setclientid *sc)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002629{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002630 struct compound_hdr hdr = {
Andy Adamsond0179312008-12-23 16:06:17 -05002631 .nops = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002632 };
2633
Chuck Lever9f06c712010-12-14 14:59:18 +00002634 encode_compound_hdr(xdr, req, &hdr);
2635 encode_setclientid(xdr, sc, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002636 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002637}
2638
2639/*
2640 * a SETCLIENTID_CONFIRM request
2641 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002642static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2643 struct xdr_stream *xdr,
2644 struct nfs4_setclientid_res *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002645{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002646 struct compound_hdr hdr = {
Andy Adamsond0179312008-12-23 16:06:17 -05002647 .nops = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002648 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002649
Chuck Lever9f06c712010-12-14 14:59:18 +00002650 encode_compound_hdr(xdr, req, &hdr);
2651 encode_setclientid_confirm(xdr, arg, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002652 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002653}
2654
2655/*
2656 * DELEGRETURN request
2657 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002658static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2659 struct xdr_stream *xdr,
2660 const struct nfs4_delegreturnargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002661{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002662 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002663 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002664 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002665
Chuck Lever9f06c712010-12-14 14:59:18 +00002666 encode_compound_hdr(xdr, req, &hdr);
2667 encode_sequence(xdr, &args->seq_args, &hdr);
2668 encode_putfh(xdr, args->fhandle, &hdr);
Chuck Lever9f06c712010-12-14 14:59:18 +00002669 encode_getfattr(xdr, args->bitmask, &hdr);
Trond Myklebuste144cbc2012-04-28 16:05:03 -04002670 encode_delegreturn(xdr, args->stateid, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002671 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002672}
2673
2674/*
Trond Myklebust683b57b2006-06-09 09:34:22 -04002675 * Encode FS_LOCATIONS request
2676 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002677static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2678 struct xdr_stream *xdr,
2679 struct nfs4_fs_locations_arg *args)
Trond Myklebust683b57b2006-06-09 09:34:22 -04002680{
Trond Myklebust683b57b2006-06-09 09:34:22 -04002681 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002682 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Trond Myklebust683b57b2006-06-09 09:34:22 -04002683 };
Benny Halevy28f56692009-04-01 09:22:09 -04002684 uint32_t replen;
Trond Myklebust683b57b2006-06-09 09:34:22 -04002685
Chuck Lever9f06c712010-12-14 14:59:18 +00002686 encode_compound_hdr(xdr, req, &hdr);
2687 encode_sequence(xdr, &args->seq_args, &hdr);
Chuck Leverb03d7352013-10-17 14:12:50 -04002688 if (args->migration) {
2689 encode_putfh(xdr, args->fh, &hdr);
2690 replen = hdr.replen;
2691 encode_fs_locations(xdr, args->bitmask, &hdr);
2692 if (args->renew)
2693 encode_renew(xdr, args->clientid, &hdr);
2694 } else {
2695 encode_putfh(xdr, args->dir_fh, &hdr);
2696 encode_lookup(xdr, args->name, &hdr);
2697 replen = hdr.replen;
2698 encode_fs_locations(xdr, args->bitmask, &hdr);
2699 }
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002700
Chuck Leverb03d7352013-10-17 14:12:50 -04002701 /* Set up reply kvec to capture returned fs_locations array. */
Benny Halevy28f56692009-04-01 09:22:09 -04002702 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
Trond Myklebust683b57b2006-06-09 09:34:22 -04002703 0, PAGE_SIZE);
Andy Adamsond0179312008-12-23 16:06:17 -05002704 encode_nops(&hdr);
Trond Myklebust683b57b2006-06-09 09:34:22 -04002705}
2706
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00002707/*
2708 * Encode SECINFO request
2709 */
2710static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2711 struct xdr_stream *xdr,
2712 struct nfs4_secinfo_arg *args)
2713{
2714 struct compound_hdr hdr = {
2715 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2716 };
2717
2718 encode_compound_hdr(xdr, req, &hdr);
2719 encode_sequence(xdr, &args->seq_args, &hdr);
2720 encode_putfh(xdr, args->dir_fh, &hdr);
2721 encode_secinfo(xdr, args->name, &hdr);
2722 encode_nops(&hdr);
2723}
2724
Chuck Lever44c99932013-10-17 14:13:30 -04002725/*
2726 * Encode FSID_PRESENT request
2727 */
2728static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req,
2729 struct xdr_stream *xdr,
2730 struct nfs4_fsid_present_arg *args)
2731{
2732 struct compound_hdr hdr = {
2733 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2734 };
2735
2736 encode_compound_hdr(xdr, req, &hdr);
2737 encode_sequence(xdr, &args->seq_args, &hdr);
2738 encode_putfh(xdr, args->fh, &hdr);
2739 encode_getfh(xdr, &hdr);
2740 if (args->renew)
2741 encode_renew(xdr, args->clientid, &hdr);
2742 encode_nops(&hdr);
2743}
2744
Benny Halevy99fe60d2009-04-01 09:22:29 -04002745#if defined(CONFIG_NFS_V4_1)
2746/*
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04002747 * BIND_CONN_TO_SESSION request
2748 */
2749static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2750 struct xdr_stream *xdr,
Trond Myklebust71a097c2015-02-18 09:27:18 -08002751 struct nfs41_bind_conn_to_session_args *args)
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04002752{
2753 struct compound_hdr hdr = {
Trond Myklebust71a097c2015-02-18 09:27:18 -08002754 .minorversion = args->client->cl_mvops->minor_version,
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04002755 };
2756
2757 encode_compound_hdr(xdr, req, &hdr);
Trond Myklebust71a097c2015-02-18 09:27:18 -08002758 encode_bind_conn_to_session(xdr, args, &hdr);
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04002759 encode_nops(&hdr);
2760}
2761
2762/*
Benny Halevy99fe60d2009-04-01 09:22:29 -04002763 * EXCHANGE_ID request
2764 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002765static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2766 struct xdr_stream *xdr,
2767 struct nfs41_exchange_id_args *args)
Benny Halevy99fe60d2009-04-01 09:22:29 -04002768{
Benny Halevy99fe60d2009-04-01 09:22:29 -04002769 struct compound_hdr hdr = {
Trond Myklebusta4432342010-06-16 09:52:27 -04002770 .minorversion = args->client->cl_mvops->minor_version,
Benny Halevy99fe60d2009-04-01 09:22:29 -04002771 };
2772
Chuck Lever9f06c712010-12-14 14:59:18 +00002773 encode_compound_hdr(xdr, req, &hdr);
2774 encode_exchange_id(xdr, args, &hdr);
Benny Halevy99fe60d2009-04-01 09:22:29 -04002775 encode_nops(&hdr);
Benny Halevy99fe60d2009-04-01 09:22:29 -04002776}
Andy Adamson2050f0c2009-04-01 09:22:30 -04002777
2778/*
Andy Adamsonfc931582009-04-01 09:22:31 -04002779 * a CREATE_SESSION request
2780 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002781static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2782 struct xdr_stream *xdr,
2783 struct nfs41_create_session_args *args)
Andy Adamsonfc931582009-04-01 09:22:31 -04002784{
Andy Adamsonfc931582009-04-01 09:22:31 -04002785 struct compound_hdr hdr = {
Trond Myklebusta4432342010-06-16 09:52:27 -04002786 .minorversion = args->client->cl_mvops->minor_version,
Andy Adamsonfc931582009-04-01 09:22:31 -04002787 };
2788
Chuck Lever9f06c712010-12-14 14:59:18 +00002789 encode_compound_hdr(xdr, req, &hdr);
2790 encode_create_session(xdr, args, &hdr);
Andy Adamsonfc931582009-04-01 09:22:31 -04002791 encode_nops(&hdr);
Andy Adamsonfc931582009-04-01 09:22:31 -04002792}
2793
2794/*
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002795 * a DESTROY_SESSION request
2796 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002797static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2798 struct xdr_stream *xdr,
2799 struct nfs4_session *session)
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002800{
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002801 struct compound_hdr hdr = {
Trond Myklebusta4432342010-06-16 09:52:27 -04002802 .minorversion = session->clp->cl_mvops->minor_version,
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002803 };
2804
Chuck Lever9f06c712010-12-14 14:59:18 +00002805 encode_compound_hdr(xdr, req, &hdr);
2806 encode_destroy_session(xdr, session, &hdr);
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002807 encode_nops(&hdr);
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002808}
2809
2810/*
Trond Myklebust66245532012-05-25 17:18:09 -04002811 * a DESTROY_CLIENTID request
2812 */
2813static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2814 struct xdr_stream *xdr,
2815 struct nfs_client *clp)
2816{
2817 struct compound_hdr hdr = {
2818 .minorversion = clp->cl_mvops->minor_version,
2819 };
2820
2821 encode_compound_hdr(xdr, req, &hdr);
2822 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2823 encode_nops(&hdr);
2824}
2825
2826/*
Andy Adamsonfc01cea2009-04-01 09:22:36 -04002827 * a SEQUENCE request
2828 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002829static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2830 struct nfs4_sequence_args *args)
Andy Adamsonfc01cea2009-04-01 09:22:36 -04002831{
Andy Adamsonfc01cea2009-04-01 09:22:36 -04002832 struct compound_hdr hdr = {
2833 .minorversion = nfs4_xdr_minorversion(args),
2834 };
2835
Chuck Lever9f06c712010-12-14 14:59:18 +00002836 encode_compound_hdr(xdr, req, &hdr);
2837 encode_sequence(xdr, args, &hdr);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04002838 encode_nops(&hdr);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04002839}
2840
2841/*
Andy Adamson2050f0c2009-04-01 09:22:30 -04002842 * a GET_LEASE_TIME request
2843 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002844static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2845 struct xdr_stream *xdr,
2846 struct nfs4_get_lease_time_args *args)
Andy Adamson2050f0c2009-04-01 09:22:30 -04002847{
Andy Adamson2050f0c2009-04-01 09:22:30 -04002848 struct compound_hdr hdr = {
2849 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2850 };
Fred Isamandae100c2011-07-30 20:52:37 -04002851 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
Andy Adamson2050f0c2009-04-01 09:22:30 -04002852
Chuck Lever9f06c712010-12-14 14:59:18 +00002853 encode_compound_hdr(xdr, req, &hdr);
2854 encode_sequence(xdr, &args->la_seq_args, &hdr);
2855 encode_putrootfh(xdr, &hdr);
2856 encode_fsinfo(xdr, lease_bitmap, &hdr);
Andy Adamson2050f0c2009-04-01 09:22:30 -04002857 encode_nops(&hdr);
Andy Adamson2050f0c2009-04-01 09:22:30 -04002858}
Ricardo Labiaga180197532009-12-05 16:08:40 -05002859
2860/*
2861 * a RECLAIM_COMPLETE request
2862 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002863static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2864 struct xdr_stream *xdr,
2865 struct nfs41_reclaim_complete_args *args)
Ricardo Labiaga180197532009-12-05 16:08:40 -05002866{
Ricardo Labiaga180197532009-12-05 16:08:40 -05002867 struct compound_hdr hdr = {
2868 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2869 };
2870
Chuck Lever9f06c712010-12-14 14:59:18 +00002871 encode_compound_hdr(xdr, req, &hdr);
2872 encode_sequence(xdr, &args->seq_args, &hdr);
2873 encode_reclaim_complete(xdr, args, &hdr);
Ricardo Labiaga180197532009-12-05 16:08:40 -05002874 encode_nops(&hdr);
Ricardo Labiaga180197532009-12-05 16:08:40 -05002875}
2876
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002877/*
2878 * Encode GETDEVICEINFO request
2879 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002880static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2881 struct xdr_stream *xdr,
2882 struct nfs4_getdeviceinfo_args *args)
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002883{
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002884 struct compound_hdr hdr = {
2885 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2886 };
2887
Chuck Lever9f06c712010-12-14 14:59:18 +00002888 encode_compound_hdr(xdr, req, &hdr);
2889 encode_sequence(xdr, &args->seq_args, &hdr);
2890 encode_getdeviceinfo(xdr, args, &hdr);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002891
2892 /* set up reply kvec. Subtract notification bitmap max size (2)
2893 * so that notification bitmap is put in xdr_buf tail */
2894 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2895 args->pdev->pages, args->pdev->pgbase,
2896 args->pdev->pglen);
2897
2898 encode_nops(&hdr);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002899}
2900
2901/*
2902 * Encode LAYOUTGET request
2903 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002904static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2905 struct xdr_stream *xdr,
2906 struct nfs4_layoutget_args *args)
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002907{
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002908 struct compound_hdr hdr = {
2909 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2910 };
2911
Chuck Lever9f06c712010-12-14 14:59:18 +00002912 encode_compound_hdr(xdr, req, &hdr);
2913 encode_sequence(xdr, &args->seq_args, &hdr);
2914 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2915 encode_layoutget(xdr, args, &hdr);
Weston Andros Adamson35124a02011-03-24 16:48:21 -04002916
2917 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2918 args->layout.pages, 0, args->layout.pglen);
2919
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002920 encode_nops(&hdr);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002921}
Andy Adamson863a3c62011-03-23 13:27:54 +00002922
2923/*
2924 * Encode LAYOUTCOMMIT request
2925 */
Benny Halevycbe82602011-05-22 19:52:37 +03002926static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2927 struct xdr_stream *xdr,
2928 struct nfs4_layoutcommit_args *args)
Andy Adamson863a3c62011-03-23 13:27:54 +00002929{
Benny Halevyac7db722011-05-22 19:53:48 +03002930 struct nfs4_layoutcommit_data *data =
2931 container_of(args, struct nfs4_layoutcommit_data, args);
Andy Adamson863a3c62011-03-23 13:27:54 +00002932 struct compound_hdr hdr = {
2933 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2934 };
2935
2936 encode_compound_hdr(xdr, req, &hdr);
2937 encode_sequence(xdr, &args->seq_args, &hdr);
2938 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
Benny Halevyac7db722011-05-22 19:53:48 +03002939 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
Andy Adamson863a3c62011-03-23 13:27:54 +00002940 encode_getfattr(xdr, args->bitmask, &hdr);
2941 encode_nops(&hdr);
Benny Halevycbe82602011-05-22 19:52:37 +03002942}
2943
2944/*
2945 * Encode LAYOUTRETURN request
2946 */
2947static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2948 struct xdr_stream *xdr,
2949 struct nfs4_layoutreturn_args *args)
2950{
2951 struct compound_hdr hdr = {
2952 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2953 };
2954
2955 encode_compound_hdr(xdr, req, &hdr);
2956 encode_sequence(xdr, &args->seq_args, &hdr);
2957 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2958 encode_layoutreturn(xdr, args, &hdr);
2959 encode_nops(&hdr);
Andy Adamson863a3c62011-03-23 13:27:54 +00002960}
Bryan Schumakerfca78d62011-06-02 14:59:07 -04002961
2962/*
2963 * Encode SECINFO_NO_NAME request
2964 */
2965static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2966 struct xdr_stream *xdr,
2967 struct nfs41_secinfo_no_name_args *args)
2968{
2969 struct compound_hdr hdr = {
2970 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2971 };
2972
2973 encode_compound_hdr(xdr, req, &hdr);
2974 encode_sequence(xdr, &args->seq_args, &hdr);
2975 encode_putrootfh(xdr, &hdr);
2976 encode_secinfo_no_name(xdr, args, &hdr);
2977 encode_nops(&hdr);
2978 return 0;
2979}
Bryan Schumaker7d974792011-06-02 14:59:08 -04002980
2981/*
2982 * Encode TEST_STATEID request
2983 */
2984static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2985 struct xdr_stream *xdr,
2986 struct nfs41_test_stateid_args *args)
2987{
2988 struct compound_hdr hdr = {
2989 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2990 };
2991
2992 encode_compound_hdr(xdr, req, &hdr);
2993 encode_sequence(xdr, &args->seq_args, &hdr);
2994 encode_test_stateid(xdr, args, &hdr);
2995 encode_nops(&hdr);
2996}
Bryan Schumaker9aeda352011-06-02 14:59:09 -04002997
2998/*
2999 * Encode FREE_STATEID request
3000 */
3001static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
3002 struct xdr_stream *xdr,
3003 struct nfs41_free_stateid_args *args)
3004{
3005 struct compound_hdr hdr = {
3006 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3007 };
3008
3009 encode_compound_hdr(xdr, req, &hdr);
3010 encode_sequence(xdr, &args->seq_args, &hdr);
3011 encode_free_stateid(xdr, args, &hdr);
3012 encode_nops(&hdr);
3013}
Benny Halevy99fe60d2009-04-01 09:22:29 -04003014#endif /* CONFIG_NFS_V4_1 */
3015
Benny Halevy686841b2009-08-14 17:19:48 +03003016static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
3017{
3018 dprintk("nfs: %s: prematurely hit end of receive buffer. "
3019 "Remaining buffer length is %tu words.\n",
3020 func, xdr->end - xdr->p);
3021}
Linus Torvalds1da177e2005-04-16 15:20:36 -07003022
Trond Myklebust683b57b2006-06-09 09:34:22 -04003023static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003024{
Al Viro8687b632006-10-19 23:28:48 -07003025 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003026
Benny Halevyc0eae662009-08-14 17:20:14 +03003027 p = xdr_inline_decode(xdr, 4);
3028 if (unlikely(!p))
3029 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003030 *len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03003031 p = xdr_inline_decode(xdr, *len);
3032 if (unlikely(!p))
3033 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003034 *string = (char *)p;
3035 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003036out_overflow:
3037 print_overflow_msg(__func__, xdr);
3038 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003039}
3040
3041static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3042{
Al Viro8687b632006-10-19 23:28:48 -07003043 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003044
Benny Halevyc0eae662009-08-14 17:20:14 +03003045 p = xdr_inline_decode(xdr, 8);
3046 if (unlikely(!p))
3047 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03003048 hdr->status = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03003049 hdr->taglen = be32_to_cpup(p);
Andy Adamson6c0195a2008-12-23 16:06:15 -05003050
Benny Halevyc0eae662009-08-14 17:20:14 +03003051 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3052 if (unlikely(!p))
3053 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003054 hdr->tag = (char *)p;
3055 p += XDR_QUADLEN(hdr->taglen);
Benny Halevycccddf42009-08-14 17:20:19 +03003056 hdr->nops = be32_to_cpup(p);
Benny Halevyaadf6152008-12-23 16:06:13 -05003057 if (unlikely(hdr->nops < 1))
3058 return nfs4_stat_to_errno(hdr->status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003059 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003060out_overflow:
3061 print_overflow_msg(__func__, xdr);
3062 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003063}
3064
Trond Myklebustc7848f62013-12-04 17:39:23 -05003065static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
3066 int *nfs_retval)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003067{
Al Viro8687b632006-10-19 23:28:48 -07003068 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003069 uint32_t opnum;
3070 int32_t nfserr;
3071
Benny Halevyc0eae662009-08-14 17:20:14 +03003072 p = xdr_inline_decode(xdr, 8);
3073 if (unlikely(!p))
3074 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03003075 opnum = be32_to_cpup(p++);
Trond Myklebustc7848f62013-12-04 17:39:23 -05003076 if (unlikely(opnum != expected))
3077 goto out_bad_operation;
Benny Halevycccddf42009-08-14 17:20:19 +03003078 nfserr = be32_to_cpup(p);
Trond Myklebustc7848f62013-12-04 17:39:23 -05003079 if (nfserr == NFS_OK)
3080 *nfs_retval = 0;
3081 else
3082 *nfs_retval = nfs4_stat_to_errno(nfserr);
3083 return true;
3084out_bad_operation:
3085 dprintk("nfs: Server returned operation"
3086 " %d but we issued a request for %d\n",
3087 opnum, expected);
3088 *nfs_retval = -EREMOTEIO;
3089 return false;
Benny Halevyc0eae662009-08-14 17:20:14 +03003090out_overflow:
3091 print_overflow_msg(__func__, xdr);
Trond Myklebustc7848f62013-12-04 17:39:23 -05003092 *nfs_retval = -EIO;
3093 return false;
3094}
3095
3096static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3097{
3098 int retval;
3099
3100 __decode_op_hdr(xdr, expected, &retval);
3101 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003102}
3103
3104/* Dummy routine */
David Howellsadfa6f92006-08-22 20:06:08 -04003105static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003106{
Al Viro8687b632006-10-19 23:28:48 -07003107 __be32 *p;
Trond Myklebust683b57b2006-06-09 09:34:22 -04003108 unsigned int strlen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003109 char *str;
3110
Benny Halevyc0eae662009-08-14 17:20:14 +03003111 p = xdr_inline_decode(xdr, 12);
3112 if (likely(p))
3113 return decode_opaque_inline(xdr, &strlen, &str);
3114 print_overflow_msg(__func__, xdr);
3115 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003116}
3117
3118static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3119{
Al Viro8687b632006-10-19 23:28:48 -07003120 uint32_t bmlen;
3121 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003122
Benny Halevyc0eae662009-08-14 17:20:14 +03003123 p = xdr_inline_decode(xdr, 4);
3124 if (unlikely(!p))
3125 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003126 bmlen = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003127
Fred Isamandae100c2011-07-30 20:52:37 -04003128 bitmap[0] = bitmap[1] = bitmap[2] = 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003129 p = xdr_inline_decode(xdr, (bmlen << 2));
3130 if (unlikely(!p))
3131 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003132 if (bmlen > 0) {
Benny Halevy6f723f72009-08-14 17:19:37 +03003133 bitmap[0] = be32_to_cpup(p++);
Fred Isamandae100c2011-07-30 20:52:37 -04003134 if (bmlen > 1) {
3135 bitmap[1] = be32_to_cpup(p++);
3136 if (bmlen > 2)
3137 bitmap[2] = be32_to_cpup(p);
3138 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003139 }
3140 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003141out_overflow:
3142 print_overflow_msg(__func__, xdr);
3143 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003144}
3145
Trond Myklebust256e48b2012-06-21 11:18:13 -04003146static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003147{
Al Viro8687b632006-10-19 23:28:48 -07003148 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003149
Benny Halevyc0eae662009-08-14 17:20:14 +03003150 p = xdr_inline_decode(xdr, 4);
3151 if (unlikely(!p))
3152 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003153 *attrlen = be32_to_cpup(p);
Trond Myklebust256e48b2012-06-21 11:18:13 -04003154 *savep = xdr_stream_pos(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003155 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003156out_overflow:
3157 print_overflow_msg(__func__, xdr);
3158 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003159}
3160
3161static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3162{
3163 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
Roman Borisov3388bff2010-10-13 16:54:51 +04003164 int ret;
3165 ret = decode_attr_bitmap(xdr, bitmask);
3166 if (unlikely(ret < 0))
3167 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003168 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3169 } else
Fred Isamandae100c2011-07-30 20:52:37 -04003170 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3171 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3172 bitmask[0], bitmask[1], bitmask[2]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003173 return 0;
3174}
3175
3176static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3177{
Al Viro8687b632006-10-19 23:28:48 -07003178 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003179 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003180
3181 *type = 0;
3182 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3183 return -EIO;
3184 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003185 p = xdr_inline_decode(xdr, 4);
3186 if (unlikely(!p))
3187 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003188 *type = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003189 if (*type < NF4REG || *type > NF4NAMEDATTR) {
Harvey Harrison3110ff82008-05-02 13:42:44 -07003190 dprintk("%s: bad type %d\n", __func__, *type);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003191 return -EIO;
3192 }
3193 bitmap[0] &= ~FATTR4_WORD0_TYPE;
Trond Myklebust409924e2009-03-11 14:10:27 -04003194 ret = NFS_ATTR_FATTR_TYPE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003195 }
Trond Myklebustbca79472009-03-11 14:10:26 -04003196 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
Trond Myklebust409924e2009-03-11 14:10:27 -04003197 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003198out_overflow:
3199 print_overflow_msg(__func__, xdr);
3200 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003201}
3202
Chuck Lever264e6352012-03-01 17:02:05 -05003203static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3204 uint32_t *bitmap, uint32_t *type)
3205{
3206 __be32 *p;
3207
3208 *type = 0;
3209 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3210 return -EIO;
3211 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3212 p = xdr_inline_decode(xdr, 4);
3213 if (unlikely(!p))
3214 goto out_overflow;
3215 *type = be32_to_cpup(p);
3216 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3217 }
3218 dprintk("%s: expire type=0x%x\n", __func__, *type);
3219 return 0;
3220out_overflow:
3221 print_overflow_msg(__func__, xdr);
3222 return -EIO;
3223}
3224
Linus Torvalds1da177e2005-04-16 15:20:36 -07003225static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3226{
Al Viro8687b632006-10-19 23:28:48 -07003227 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003228 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003229
3230 *change = 0;
3231 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3232 return -EIO;
3233 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003234 p = xdr_inline_decode(xdr, 8);
3235 if (unlikely(!p))
3236 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003237 xdr_decode_hyper(p, change);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003238 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
Trond Myklebust409924e2009-03-11 14:10:27 -04003239 ret = NFS_ATTR_FATTR_CHANGE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003240 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003241 dprintk("%s: change attribute=%Lu\n", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003242 (unsigned long long)*change);
Trond Myklebust409924e2009-03-11 14:10:27 -04003243 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003244out_overflow:
3245 print_overflow_msg(__func__, xdr);
3246 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003247}
3248
3249static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3250{
Al Viro8687b632006-10-19 23:28:48 -07003251 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003252 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003253
3254 *size = 0;
3255 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3256 return -EIO;
3257 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003258 p = xdr_inline_decode(xdr, 8);
3259 if (unlikely(!p))
3260 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003261 xdr_decode_hyper(p, size);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003262 bitmap[0] &= ~FATTR4_WORD0_SIZE;
Trond Myklebust409924e2009-03-11 14:10:27 -04003263 ret = NFS_ATTR_FATTR_SIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003264 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003265 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
Trond Myklebust409924e2009-03-11 14:10:27 -04003266 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003267out_overflow:
3268 print_overflow_msg(__func__, xdr);
3269 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003270}
3271
3272static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3273{
Al Viro8687b632006-10-19 23:28:48 -07003274 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003275
3276 *res = 0;
3277 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3278 return -EIO;
3279 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003280 p = xdr_inline_decode(xdr, 4);
3281 if (unlikely(!p))
3282 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003283 *res = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003284 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3285 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003286 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003287 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003288out_overflow:
3289 print_overflow_msg(__func__, xdr);
3290 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003291}
3292
3293static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3294{
Al Viro8687b632006-10-19 23:28:48 -07003295 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003296
3297 *res = 0;
3298 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3299 return -EIO;
3300 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003301 p = xdr_inline_decode(xdr, 4);
3302 if (unlikely(!p))
3303 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003304 *res = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003305 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3306 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003307 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003308 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003309out_overflow:
3310 print_overflow_msg(__func__, xdr);
3311 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003312}
3313
Trond Myklebust8b4bdcf2006-06-09 09:34:19 -04003314static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003315{
Al Viro8687b632006-10-19 23:28:48 -07003316 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003317 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003318
3319 fsid->major = 0;
3320 fsid->minor = 0;
3321 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3322 return -EIO;
3323 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003324 p = xdr_inline_decode(xdr, 16);
3325 if (unlikely(!p))
3326 goto out_overflow;
Benny Halevy3ceb4db2009-08-14 17:19:41 +03003327 p = xdr_decode_hyper(p, &fsid->major);
Benny Halevycccddf42009-08-14 17:20:19 +03003328 xdr_decode_hyper(p, &fsid->minor);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003329 bitmap[0] &= ~FATTR4_WORD0_FSID;
Trond Myklebust409924e2009-03-11 14:10:27 -04003330 ret = NFS_ATTR_FATTR_FSID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003331 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003332 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003333 (unsigned long long)fsid->major,
3334 (unsigned long long)fsid->minor);
Trond Myklebust409924e2009-03-11 14:10:27 -04003335 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003336out_overflow:
3337 print_overflow_msg(__func__, xdr);
3338 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003339}
3340
3341static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3342{
Al Viro8687b632006-10-19 23:28:48 -07003343 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003344
3345 *res = 60;
3346 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3347 return -EIO;
3348 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003349 p = xdr_inline_decode(xdr, 4);
3350 if (unlikely(!p))
3351 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003352 *res = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003353 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3354 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003355 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003356 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003357out_overflow:
3358 print_overflow_msg(__func__, xdr);
3359 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003360}
3361
Trond Myklebustee7b75f2011-06-16 13:15:41 -04003362static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
Bryan Schumakerae42c702010-10-21 16:33:17 -04003363{
3364 __be32 *p;
3365
3366 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3367 return -EIO;
3368 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3369 p = xdr_inline_decode(xdr, 4);
3370 if (unlikely(!p))
3371 goto out_overflow;
3372 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
Trond Myklebustee7b75f2011-06-16 13:15:41 -04003373 *res = -be32_to_cpup(p);
Bryan Schumakerae42c702010-10-21 16:33:17 -04003374 }
3375 return 0;
3376out_overflow:
3377 print_overflow_msg(__func__, xdr);
3378 return -EIO;
3379}
3380
Kinglong Mee8c612822015-08-26 21:12:58 +08003381static int decode_attr_exclcreat_supported(struct xdr_stream *xdr,
3382 uint32_t *bitmap, uint32_t *bitmask)
3383{
3384 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) {
3385 int ret;
3386 ret = decode_attr_bitmap(xdr, bitmask);
3387 if (unlikely(ret < 0))
3388 return ret;
3389 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT;
3390 } else
3391 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3392 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3393 bitmask[0], bitmask[1], bitmask[2]);
3394 return 0;
3395}
3396
Bryan Schumakerae42c702010-10-21 16:33:17 -04003397static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3398{
3399 __be32 *p;
3400 int len;
3401
Trond Myklebust7ad07352010-10-23 15:34:20 -04003402 if (fh != NULL)
3403 memset(fh, 0, sizeof(*fh));
Bryan Schumakerae42c702010-10-21 16:33:17 -04003404
3405 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3406 return -EIO;
3407 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3408 p = xdr_inline_decode(xdr, 4);
3409 if (unlikely(!p))
3410 goto out_overflow;
3411 len = be32_to_cpup(p);
3412 if (len > NFS4_FHSIZE)
3413 return -EIO;
Bryan Schumakerae42c702010-10-21 16:33:17 -04003414 p = xdr_inline_decode(xdr, len);
3415 if (unlikely(!p))
3416 goto out_overflow;
Trond Myklebust7ad07352010-10-23 15:34:20 -04003417 if (fh != NULL) {
3418 memcpy(fh->data, p, len);
3419 fh->size = len;
3420 }
Bryan Schumakerae42c702010-10-21 16:33:17 -04003421 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3422 }
3423 return 0;
3424out_overflow:
3425 print_overflow_msg(__func__, xdr);
3426 return -EIO;
3427}
3428
Linus Torvalds1da177e2005-04-16 15:20:36 -07003429static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3430{
Al Viro8687b632006-10-19 23:28:48 -07003431 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003432
Malahal Nainenia1800ac2014-01-27 15:31:09 -06003433 *res = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003434 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3435 return -EIO;
3436 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003437 p = xdr_inline_decode(xdr, 4);
3438 if (unlikely(!p))
3439 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003440 *res = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003441 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3442 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003443 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003444 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003445out_overflow:
3446 print_overflow_msg(__func__, xdr);
3447 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003448}
3449
3450static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3451{
Al Viro8687b632006-10-19 23:28:48 -07003452 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003453 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003454
3455 *fileid = 0;
3456 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3457 return -EIO;
3458 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003459 p = xdr_inline_decode(xdr, 8);
3460 if (unlikely(!p))
3461 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003462 xdr_decode_hyper(p, fileid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003463 bitmap[0] &= ~FATTR4_WORD0_FILEID;
Trond Myklebust409924e2009-03-11 14:10:27 -04003464 ret = NFS_ATTR_FATTR_FILEID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003465 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003466 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
Trond Myklebust409924e2009-03-11 14:10:27 -04003467 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003468out_overflow:
3469 print_overflow_msg(__func__, xdr);
3470 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003471}
3472
Manoj Naik99baf622006-06-09 09:34:24 -04003473static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3474{
Al Viro8687b632006-10-19 23:28:48 -07003475 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003476 int ret = 0;
Manoj Naik99baf622006-06-09 09:34:24 -04003477
3478 *fileid = 0;
3479 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3480 return -EIO;
3481 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003482 p = xdr_inline_decode(xdr, 8);
3483 if (unlikely(!p))
3484 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003485 xdr_decode_hyper(p, fileid);
Manoj Naik99baf622006-06-09 09:34:24 -04003486 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
Trond Myklebust28331a42011-04-27 13:47:52 -04003487 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
Manoj Naik99baf622006-06-09 09:34:24 -04003488 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003489 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
Trond Myklebust409924e2009-03-11 14:10:27 -04003490 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003491out_overflow:
3492 print_overflow_msg(__func__, xdr);
3493 return -EIO;
Manoj Naik99baf622006-06-09 09:34:24 -04003494}
3495
Linus Torvalds1da177e2005-04-16 15:20:36 -07003496static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3497{
Al Viro8687b632006-10-19 23:28:48 -07003498 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003499 int status = 0;
3500
3501 *res = 0;
3502 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3503 return -EIO;
3504 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003505 p = xdr_inline_decode(xdr, 8);
3506 if (unlikely(!p))
3507 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003508 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003509 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3510 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003511 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003512 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003513out_overflow:
3514 print_overflow_msg(__func__, xdr);
3515 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003516}
3517
3518static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3519{
Al Viro8687b632006-10-19 23:28:48 -07003520 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003521 int status = 0;
3522
3523 *res = 0;
3524 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3525 return -EIO;
3526 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003527 p = xdr_inline_decode(xdr, 8);
3528 if (unlikely(!p))
3529 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003530 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003531 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3532 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003533 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003534 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003535out_overflow:
3536 print_overflow_msg(__func__, xdr);
3537 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003538}
3539
3540static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3541{
Al Viro8687b632006-10-19 23:28:48 -07003542 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003543 int status = 0;
3544
3545 *res = 0;
3546 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3547 return -EIO;
3548 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003549 p = xdr_inline_decode(xdr, 8);
3550 if (unlikely(!p))
3551 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003552 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003553 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3554 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003555 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003556 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003557out_overflow:
3558 print_overflow_msg(__func__, xdr);
3559 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003560}
3561
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003562static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3563{
Chuck Lever464ad6b2007-10-26 13:32:08 -04003564 u32 n;
Al Viro8687b632006-10-19 23:28:48 -07003565 __be32 *p;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003566 int status = 0;
3567
Benny Halevyc0eae662009-08-14 17:20:14 +03003568 p = xdr_inline_decode(xdr, 4);
3569 if (unlikely(!p))
3570 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003571 n = be32_to_cpup(p);
Andy Adamson33a43f22006-06-09 09:34:30 -04003572 if (n == 0)
3573 goto root_path;
Chuck Lever02a29762012-03-01 17:00:31 -05003574 dprintk("pathname4: ");
Trond Myklebust809b4262013-03-27 11:54:45 -04003575 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3576 dprintk("cannot parse %d components in path\n", n);
3577 goto out_eio;
3578 }
3579 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003580 struct nfs4_string *component = &path->components[path->ncomponents];
3581 status = decode_opaque_inline(xdr, &component->len, &component->data);
3582 if (unlikely(status != 0))
3583 goto out_eio;
Trond Myklebust95a13f72012-03-14 21:55:01 -04003584 ifdebug (XDR)
Chuck Lever02a29762012-03-01 17:00:31 -05003585 pr_cont("%s%.*s ",
3586 (path->ncomponents != n ? "/ " : ""),
3587 component->len, component->data);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003588 }
3589out:
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003590 return status;
Andy Adamson33a43f22006-06-09 09:34:30 -04003591root_path:
3592/* a root pathname is sent as a zero component4 */
3593 path->ncomponents = 1;
3594 path->components[0].len=0;
3595 path->components[0].data=NULL;
Chuck Lever02a29762012-03-01 17:00:31 -05003596 dprintk("pathname4: /\n");
Andy Adamson33a43f22006-06-09 09:34:30 -04003597 goto out;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003598out_eio:
3599 dprintk(" status %d", status);
3600 status = -EIO;
3601 goto out;
Benny Halevyc0eae662009-08-14 17:20:14 +03003602out_overflow:
3603 print_overflow_msg(__func__, xdr);
3604 return -EIO;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003605}
3606
3607static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
Trond Myklebust683b57b2006-06-09 09:34:22 -04003608{
3609 int n;
Al Viro8687b632006-10-19 23:28:48 -07003610 __be32 *p;
Trond Myklebust683b57b2006-06-09 09:34:22 -04003611 int status = -EIO;
3612
3613 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3614 goto out;
3615 status = 0;
3616 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3617 goto out;
Trond Myklebust8b7e3f42012-01-30 15:43:56 -05003618 status = -EIO;
3619 /* Ignore borken servers that return unrequested attrs */
3620 if (unlikely(res == NULL))
3621 goto out;
Chuck Lever02a29762012-03-01 17:00:31 -05003622 dprintk("%s: fsroot:\n", __func__);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003623 status = decode_pathname(xdr, &res->fs_path);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003624 if (unlikely(status != 0))
3625 goto out;
Benny Halevyc0eae662009-08-14 17:20:14 +03003626 p = xdr_inline_decode(xdr, 4);
3627 if (unlikely(!p))
3628 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003629 n = be32_to_cpup(p);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003630 if (n <= 0)
3631 goto out_eio;
Trond Myklebust809b4262013-03-27 11:54:45 -04003632 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
Chuck Lever464ad6b2007-10-26 13:32:08 -04003633 u32 m;
Trond Myklebust809b4262013-03-27 11:54:45 -04003634 struct nfs4_fs_location *loc;
Trond Myklebust683b57b2006-06-09 09:34:22 -04003635
Trond Myklebust809b4262013-03-27 11:54:45 -04003636 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3637 break;
3638 loc = &res->locations[res->nlocations];
Benny Halevyc0eae662009-08-14 17:20:14 +03003639 p = xdr_inline_decode(xdr, 4);
3640 if (unlikely(!p))
3641 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003642 m = be32_to_cpup(p);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003643
Chuck Lever02a29762012-03-01 17:00:31 -05003644 dprintk("%s: servers:\n", __func__);
Trond Myklebust809b4262013-03-27 11:54:45 -04003645 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3646 struct nfs4_string *server;
3647
3648 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
Chuck Lever464ad6b2007-10-26 13:32:08 -04003649 unsigned int i;
3650 dprintk("%s: using first %u of %u servers "
3651 "returned for location %u\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003652 __func__,
Chuck Lever464ad6b2007-10-26 13:32:08 -04003653 NFS4_FS_LOCATION_MAXSERVERS,
3654 m, res->nlocations);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003655 for (i = loc->nservers; i < m; i++) {
Trond Myklebust2e42c3e2007-05-14 17:20:41 -04003656 unsigned int len;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003657 char *data;
3658 status = decode_opaque_inline(xdr, &len, &data);
3659 if (unlikely(status != 0))
3660 goto out_eio;
3661 }
Trond Myklebust809b4262013-03-27 11:54:45 -04003662 break;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003663 }
Trond Myklebust809b4262013-03-27 11:54:45 -04003664 server = &loc->servers[loc->nservers];
3665 status = decode_opaque_inline(xdr, &server->len, &server->data);
3666 if (unlikely(status != 0))
3667 goto out_eio;
3668 dprintk("%s ", server->data);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003669 }
3670 status = decode_pathname(xdr, &loc->rootpath);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003671 if (unlikely(status != 0))
3672 goto out_eio;
Trond Myklebust683b57b2006-06-09 09:34:22 -04003673 }
Trond Myklebust409924e2009-03-11 14:10:27 -04003674 if (res->nlocations != 0)
Chuck Lever81934dd2012-03-01 17:01:57 -05003675 status = NFS_ATTR_FATTR_V4_LOCATIONS;
Trond Myklebust683b57b2006-06-09 09:34:22 -04003676out:
Harvey Harrison3110ff82008-05-02 13:42:44 -07003677 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003678 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003679out_overflow:
3680 print_overflow_msg(__func__, xdr);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003681out_eio:
3682 status = -EIO;
3683 goto out;
3684}
3685
Linus Torvalds1da177e2005-04-16 15:20:36 -07003686static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3687{
Al Viro8687b632006-10-19 23:28:48 -07003688 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003689 int status = 0;
3690
3691 *res = 0;
3692 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3693 return -EIO;
3694 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003695 p = xdr_inline_decode(xdr, 8);
3696 if (unlikely(!p))
3697 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003698 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003699 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3700 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003701 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003702 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003703out_overflow:
3704 print_overflow_msg(__func__, xdr);
3705 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003706}
3707
3708static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3709{
Al Viro8687b632006-10-19 23:28:48 -07003710 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003711 int status = 0;
3712
3713 *maxlink = 1;
3714 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3715 return -EIO;
3716 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003717 p = xdr_inline_decode(xdr, 4);
3718 if (unlikely(!p))
3719 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003720 *maxlink = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003721 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3722 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003723 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003724 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003725out_overflow:
3726 print_overflow_msg(__func__, xdr);
3727 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003728}
3729
3730static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3731{
Al Viro8687b632006-10-19 23:28:48 -07003732 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003733 int status = 0;
3734
3735 *maxname = 1024;
3736 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3737 return -EIO;
3738 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003739 p = xdr_inline_decode(xdr, 4);
3740 if (unlikely(!p))
3741 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003742 *maxname = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003743 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3744 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003745 dprintk("%s: maxname=%u\n", __func__, *maxname);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003746 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003747out_overflow:
3748 print_overflow_msg(__func__, xdr);
3749 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003750}
3751
3752static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3753{
Al Viro8687b632006-10-19 23:28:48 -07003754 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003755 int status = 0;
3756
3757 *res = 1024;
3758 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3759 return -EIO;
3760 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3761 uint64_t maxread;
Benny Halevyc0eae662009-08-14 17:20:14 +03003762 p = xdr_inline_decode(xdr, 8);
3763 if (unlikely(!p))
3764 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003765 xdr_decode_hyper(p, &maxread);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003766 if (maxread > 0x7FFFFFFF)
3767 maxread = 0x7FFFFFFF;
3768 *res = (uint32_t)maxread;
3769 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3770 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003771 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003772 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003773out_overflow:
3774 print_overflow_msg(__func__, xdr);
3775 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003776}
3777
3778static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3779{
Al Viro8687b632006-10-19 23:28:48 -07003780 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003781 int status = 0;
3782
3783 *res = 1024;
3784 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3785 return -EIO;
3786 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3787 uint64_t maxwrite;
Benny Halevyc0eae662009-08-14 17:20:14 +03003788 p = xdr_inline_decode(xdr, 8);
3789 if (unlikely(!p))
3790 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003791 xdr_decode_hyper(p, &maxwrite);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003792 if (maxwrite > 0x7FFFFFFF)
3793 maxwrite = 0x7FFFFFFF;
3794 *res = (uint32_t)maxwrite;
3795 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3796 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003797 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003798 return status;
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
Trond Myklebustbca79472009-03-11 14:10:26 -04003804static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003805{
Trond Myklebustbca79472009-03-11 14:10:26 -04003806 uint32_t tmp;
Al Viro8687b632006-10-19 23:28:48 -07003807 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003808 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003809
3810 *mode = 0;
3811 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3812 return -EIO;
3813 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003814 p = xdr_inline_decode(xdr, 4);
3815 if (unlikely(!p))
3816 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003817 tmp = be32_to_cpup(p);
Trond Myklebustbca79472009-03-11 14:10:26 -04003818 *mode = tmp & ~S_IFMT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003819 bitmap[1] &= ~FATTR4_WORD1_MODE;
Trond Myklebust409924e2009-03-11 14:10:27 -04003820 ret = NFS_ATTR_FATTR_MODE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003821 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003822 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
Trond Myklebust409924e2009-03-11 14:10:27 -04003823 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003824out_overflow:
3825 print_overflow_msg(__func__, xdr);
3826 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003827}
3828
3829static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3830{
Al Viro8687b632006-10-19 23:28:48 -07003831 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003832 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003833
3834 *nlink = 1;
3835 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3836 return -EIO;
3837 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003838 p = xdr_inline_decode(xdr, 4);
3839 if (unlikely(!p))
3840 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003841 *nlink = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003842 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
Trond Myklebust409924e2009-03-11 14:10:27 -04003843 ret = NFS_ATTR_FATTR_NLINK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003844 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003845 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
Trond Myklebust409924e2009-03-11 14:10:27 -04003846 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003847out_overflow:
3848 print_overflow_msg(__func__, xdr);
3849 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003850}
3851
Trond Myklebust80e52ac2009-08-09 15:06:19 -04003852static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
Eric W. Biedermane5782072013-02-01 14:22:02 -08003853 const struct nfs_server *server, kuid_t *uid,
Trond Myklebust6926afd2012-01-07 13:22:46 -05003854 struct nfs4_string *owner_name)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003855{
Al Viro8687b632006-10-19 23:28:48 -07003856 uint32_t len;
3857 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003858 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003859
Eric W. Biedermane5782072013-02-01 14:22:02 -08003860 *uid = make_kuid(&init_user_ns, -2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003861 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3862 return -EIO;
3863 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003864 p = xdr_inline_decode(xdr, 4);
3865 if (unlikely(!p))
3866 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003867 len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03003868 p = xdr_inline_decode(xdr, len);
3869 if (unlikely(!p))
3870 goto out_overflow;
Trond Myklebust6926afd2012-01-07 13:22:46 -05003871 if (owner_name != NULL) {
3872 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3873 if (owner_name->data != NULL) {
3874 owner_name->len = len;
3875 ret = NFS_ATTR_FATTR_OWNER_NAME;
3876 }
Trond Myklebust80e52ac2009-08-09 15:06:19 -04003877 } else if (len < XDR_MAX_NETOBJ) {
Trond Myklebuste4fd72a2011-02-22 15:44:31 -08003878 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
Trond Myklebust409924e2009-03-11 14:10:27 -04003879 ret = NFS_ATTR_FATTR_OWNER;
3880 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07003881 dprintk("%s: nfs_map_name_to_uid failed!\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003882 __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003883 } else
Chuck Leverfe82a182007-09-11 18:01:10 -04003884 dprintk("%s: name too long (%u)!\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003885 __func__, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003886 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3887 }
Eric W. Biedermane5782072013-02-01 14:22:02 -08003888 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
Trond Myklebust409924e2009-03-11 14:10:27 -04003889 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003890out_overflow:
3891 print_overflow_msg(__func__, xdr);
3892 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003893}
3894
Trond Myklebust80e52ac2009-08-09 15:06:19 -04003895static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
Eric W. Biedermane5782072013-02-01 14:22:02 -08003896 const struct nfs_server *server, kgid_t *gid,
Trond Myklebust6926afd2012-01-07 13:22:46 -05003897 struct nfs4_string *group_name)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003898{
Al Viro8687b632006-10-19 23:28:48 -07003899 uint32_t len;
3900 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003901 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003902
Eric W. Biedermane5782072013-02-01 14:22:02 -08003903 *gid = make_kgid(&init_user_ns, -2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003904 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3905 return -EIO;
3906 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003907 p = xdr_inline_decode(xdr, 4);
3908 if (unlikely(!p))
3909 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003910 len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03003911 p = xdr_inline_decode(xdr, len);
3912 if (unlikely(!p))
3913 goto out_overflow;
Trond Myklebust6926afd2012-01-07 13:22:46 -05003914 if (group_name != NULL) {
3915 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3916 if (group_name->data != NULL) {
3917 group_name->len = len;
3918 ret = NFS_ATTR_FATTR_GROUP_NAME;
3919 }
Trond Myklebust80e52ac2009-08-09 15:06:19 -04003920 } else if (len < XDR_MAX_NETOBJ) {
Trond Myklebuste4fd72a2011-02-22 15:44:31 -08003921 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
Trond Myklebust409924e2009-03-11 14:10:27 -04003922 ret = NFS_ATTR_FATTR_GROUP;
3923 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07003924 dprintk("%s: nfs_map_group_to_gid failed!\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003925 __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003926 } else
Chuck Leverfe82a182007-09-11 18:01:10 -04003927 dprintk("%s: name too long (%u)!\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003928 __func__, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003929 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3930 }
Eric W. Biedermane5782072013-02-01 14:22:02 -08003931 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
Trond Myklebust409924e2009-03-11 14:10:27 -04003932 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003933out_overflow:
3934 print_overflow_msg(__func__, xdr);
3935 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003936}
3937
3938static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3939{
Al Viro8687b632006-10-19 23:28:48 -07003940 uint32_t major = 0, minor = 0;
3941 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003942 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003943
3944 *rdev = MKDEV(0,0);
3945 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3946 return -EIO;
3947 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3948 dev_t tmp;
3949
Benny Halevyc0eae662009-08-14 17:20:14 +03003950 p = xdr_inline_decode(xdr, 8);
3951 if (unlikely(!p))
3952 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03003953 major = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03003954 minor = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003955 tmp = MKDEV(major, minor);
3956 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3957 *rdev = tmp;
3958 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
Trond Myklebust409924e2009-03-11 14:10:27 -04003959 ret = NFS_ATTR_FATTR_RDEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003960 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003961 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
Trond Myklebust409924e2009-03-11 14:10:27 -04003962 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003963out_overflow:
3964 print_overflow_msg(__func__, xdr);
3965 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003966}
3967
3968static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3969{
Al Viro8687b632006-10-19 23:28:48 -07003970 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003971 int status = 0;
3972
3973 *res = 0;
3974 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3975 return -EIO;
3976 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003977 p = xdr_inline_decode(xdr, 8);
3978 if (unlikely(!p))
3979 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003980 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003981 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3982 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003983 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003984 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003985out_overflow:
3986 print_overflow_msg(__func__, xdr);
3987 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003988}
3989
3990static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3991{
Al Viro8687b632006-10-19 23:28:48 -07003992 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003993 int status = 0;
3994
3995 *res = 0;
3996 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3997 return -EIO;
3998 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003999 p = xdr_inline_decode(xdr, 8);
4000 if (unlikely(!p))
4001 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004002 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004003 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
4004 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07004005 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004006 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004007out_overflow:
4008 print_overflow_msg(__func__, xdr);
4009 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004010}
4011
4012static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4013{
Al Viro8687b632006-10-19 23:28:48 -07004014 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004015 int status = 0;
4016
4017 *res = 0;
4018 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
4019 return -EIO;
4020 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03004021 p = xdr_inline_decode(xdr, 8);
4022 if (unlikely(!p))
4023 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004024 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004025 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
4026 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07004027 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004028 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004029out_overflow:
4030 print_overflow_msg(__func__, xdr);
4031 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004032}
4033
4034static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
4035{
Al Viro8687b632006-10-19 23:28:48 -07004036 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04004037 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004038
4039 *used = 0;
4040 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
4041 return -EIO;
4042 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03004043 p = xdr_inline_decode(xdr, 8);
4044 if (unlikely(!p))
4045 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004046 xdr_decode_hyper(p, used);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004047 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
Trond Myklebust409924e2009-03-11 14:10:27 -04004048 ret = NFS_ATTR_FATTR_SPACE_USED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004049 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07004050 dprintk("%s: space used=%Lu\n", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004051 (unsigned long long)*used);
Trond Myklebust409924e2009-03-11 14:10:27 -04004052 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03004053out_overflow:
4054 print_overflow_msg(__func__, xdr);
4055 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004056}
4057
4058static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
4059{
Al Viro8687b632006-10-19 23:28:48 -07004060 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004061 uint64_t sec;
4062 uint32_t nsec;
4063
Benny Halevyc0eae662009-08-14 17:20:14 +03004064 p = xdr_inline_decode(xdr, 12);
4065 if (unlikely(!p))
4066 goto out_overflow;
Benny Halevy3ceb4db2009-08-14 17:19:41 +03004067 p = xdr_decode_hyper(p, &sec);
Benny Halevycccddf42009-08-14 17:20:19 +03004068 nsec = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004069 time->tv_sec = (time_t)sec;
4070 time->tv_nsec = (long)nsec;
4071 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004072out_overflow:
4073 print_overflow_msg(__func__, xdr);
4074 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004075}
4076
4077static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4078{
4079 int status = 0;
4080
4081 time->tv_sec = 0;
4082 time->tv_nsec = 0;
4083 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4084 return -EIO;
4085 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4086 status = decode_attr_time(xdr, time);
Trond Myklebust409924e2009-03-11 14:10:27 -04004087 if (status == 0)
4088 status = NFS_ATTR_FATTR_ATIME;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004089 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4090 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07004091 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004092 return status;
4093}
4094
4095static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4096{
4097 int status = 0;
4098
4099 time->tv_sec = 0;
4100 time->tv_nsec = 0;
4101 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4102 return -EIO;
4103 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4104 status = decode_attr_time(xdr, time);
Trond Myklebust409924e2009-03-11 14:10:27 -04004105 if (status == 0)
4106 status = NFS_ATTR_FATTR_CTIME;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004107 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4108 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07004109 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004110 return status;
4111}
4112
Ricardo Labiaga55b6e772010-10-12 16:30:06 -07004113static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4114 struct timespec *time)
4115{
4116 int status = 0;
4117
4118 time->tv_sec = 0;
4119 time->tv_nsec = 0;
4120 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4121 return -EIO;
4122 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4123 status = decode_attr_time(xdr, time);
4124 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4125 }
4126 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4127 (long)time->tv_nsec);
4128 return status;
4129}
4130
David Quigleyaa9c2662013-05-22 12:50:44 -04004131static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4132 struct nfs4_label *label)
4133{
4134 uint32_t pi = 0;
4135 uint32_t lfs = 0;
4136 __u32 len;
4137 __be32 *p;
4138 int status = 0;
4139
4140 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4141 return -EIO;
4142 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4143 p = xdr_inline_decode(xdr, 4);
4144 if (unlikely(!p))
4145 goto out_overflow;
4146 lfs = be32_to_cpup(p++);
4147 p = xdr_inline_decode(xdr, 4);
4148 if (unlikely(!p))
4149 goto out_overflow;
4150 pi = be32_to_cpup(p++);
4151 p = xdr_inline_decode(xdr, 4);
4152 if (unlikely(!p))
4153 goto out_overflow;
4154 len = be32_to_cpup(p++);
4155 p = xdr_inline_decode(xdr, len);
4156 if (unlikely(!p))
4157 goto out_overflow;
4158 if (len < NFS4_MAXLABELLEN) {
4159 if (label) {
4160 memcpy(label->label, p, len);
4161 label->len = len;
4162 label->pi = pi;
4163 label->lfs = lfs;
4164 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4165 }
4166 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4167 } else
4168 printk(KERN_WARNING "%s: label too long (%u)!\n",
4169 __func__, len);
4170 }
4171 if (label && label->label)
4172 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
4173 (char *)label->label, label->len, label->pi, label->lfs);
4174 return status;
4175
4176out_overflow:
4177 print_overflow_msg(__func__, xdr);
4178 return -EIO;
4179}
4180
Linus Torvalds1da177e2005-04-16 15:20:36 -07004181static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4182{
4183 int status = 0;
4184
4185 time->tv_sec = 0;
4186 time->tv_nsec = 0;
4187 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4188 return -EIO;
4189 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4190 status = decode_attr_time(xdr, time);
Trond Myklebust409924e2009-03-11 14:10:27 -04004191 if (status == 0)
4192 status = NFS_ATTR_FATTR_MTIME;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004193 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4194 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07004195 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004196 return status;
4197}
4198
Trond Myklebust256e48b2012-06-21 11:18:13 -04004199static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004200{
4201 unsigned int attrwords = XDR_QUADLEN(attrlen);
Trond Myklebust256e48b2012-06-21 11:18:13 -04004202 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004203
4204 if (unlikely(attrwords != nwords)) {
Chuck Leverfe82a182007-09-11 18:01:10 -04004205 dprintk("%s: server returned incorrect attribute length: "
4206 "%u %c %u\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07004207 __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004208 attrwords << 2,
4209 (attrwords < nwords) ? '<' : '>',
4210 nwords << 2);
4211 return -EIO;
4212 }
4213 return 0;
4214}
4215
4216static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4217{
Al Viro8687b632006-10-19 23:28:48 -07004218 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004219
Benny Halevyc0eae662009-08-14 17:20:14 +03004220 p = xdr_inline_decode(xdr, 20);
4221 if (unlikely(!p))
4222 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004223 cinfo->atomic = be32_to_cpup(p++);
Benny Halevy3ceb4db2009-08-14 17:19:41 +03004224 p = xdr_decode_hyper(p, &cinfo->before);
Benny Halevycccddf42009-08-14 17:20:19 +03004225 xdr_decode_hyper(p, &cinfo->after);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004226 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004227out_overflow:
4228 print_overflow_msg(__func__, xdr);
4229 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004230}
4231
Weston Andros Adamson6168f622012-09-10 14:00:46 -04004232static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004233{
Al Viro8687b632006-10-19 23:28:48 -07004234 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004235 uint32_t supp, acc;
4236 int status;
4237
4238 status = decode_op_hdr(xdr, OP_ACCESS);
4239 if (status)
4240 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004241 p = xdr_inline_decode(xdr, 8);
4242 if (unlikely(!p))
4243 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004244 supp = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03004245 acc = be32_to_cpup(p);
Weston Andros Adamson6168f622012-09-10 14:00:46 -04004246 *supported = supp;
4247 *access = acc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004248 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004249out_overflow:
4250 print_overflow_msg(__func__, xdr);
4251 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004252}
4253
Benny Halevy07d30432009-08-14 17:19:52 +03004254static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004255{
Al Viro8687b632006-10-19 23:28:48 -07004256 __be32 *p;
Benny Halevy07d30432009-08-14 17:19:52 +03004257
4258 p = xdr_inline_decode(xdr, len);
4259 if (likely(p)) {
4260 memcpy(buf, p, len);
4261 return 0;
4262 }
4263 print_overflow_msg(__func__, xdr);
4264 return -EIO;
4265}
4266
4267static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4268{
Trond Myklebust2d2f24a2012-03-04 18:13:57 -05004269 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004270}
4271
4272static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4273{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004274 int status;
4275
4276 status = decode_op_hdr(xdr, OP_CLOSE);
Trond Myklebustc1d51932008-04-07 13:20:54 -04004277 if (status != -EIO)
4278 nfs_increment_open_seqid(status, res->seqid);
Benny Halevy07d30432009-08-14 17:19:52 +03004279 if (!status)
4280 status = decode_stateid(xdr, &res->stateid);
4281 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004282}
4283
Benny Halevydb942bb2009-08-14 17:19:56 +03004284static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4285{
Chuck Levercd937102012-03-02 17:14:31 -05004286 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004287}
4288
Trond Myklebust2f2c63b2012-06-08 11:56:09 -04004289static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4290{
4291 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4292}
4293
Fred Isaman0b7c0152012-04-20 14:47:39 -04004294static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004295{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004296 int status;
4297
4298 status = decode_op_hdr(xdr, OP_COMMIT);
Benny Halevydb942bb2009-08-14 17:19:56 +03004299 if (!status)
Trond Myklebust2f2c63b2012-06-08 11:56:09 -04004300 status = decode_write_verifier(xdr, &res->verf->verifier);
Benny Halevydb942bb2009-08-14 17:19:56 +03004301 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004302}
4303
4304static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4305{
Al Viro8687b632006-10-19 23:28:48 -07004306 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004307 uint32_t bmlen;
4308 int status;
4309
4310 status = decode_op_hdr(xdr, OP_CREATE);
4311 if (status)
4312 return status;
4313 if ((status = decode_change_info(xdr, cinfo)))
4314 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004315 p = xdr_inline_decode(xdr, 4);
4316 if (unlikely(!p))
4317 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004318 bmlen = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03004319 p = xdr_inline_decode(xdr, bmlen << 2);
4320 if (likely(p))
4321 return 0;
4322out_overflow:
4323 print_overflow_msg(__func__, xdr);
4324 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004325}
4326
4327static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4328{
Trond Myklebust256e48b2012-06-21 11:18:13 -04004329 unsigned int savep;
Fred Isamandae100c2011-07-30 20:52:37 -04004330 uint32_t attrlen, bitmap[3] = {0};
Linus Torvalds1da177e2005-04-16 15:20:36 -07004331 int status;
4332
4333 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4334 goto xdr_error;
4335 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4336 goto xdr_error;
4337 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4338 goto xdr_error;
4339 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4340 goto xdr_error;
Chuck Lever264e6352012-03-01 17:02:05 -05004341 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4342 &res->fh_expire_type)) != 0)
4343 goto xdr_error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004344 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4345 goto xdr_error;
4346 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4347 goto xdr_error;
4348 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4349 goto xdr_error;
Kinglong Mee8c612822015-08-26 21:12:58 +08004350 if ((status = decode_attr_exclcreat_supported(xdr, bitmap,
4351 res->exclcreat_bitmask)) != 0)
4352 goto xdr_error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004353 status = verify_attr_len(xdr, savep, attrlen);
4354xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07004355 dprintk("%s: xdr returned %d!\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004356 return status;
4357}
Andy Adamson6c0195a2008-12-23 16:06:15 -05004358
Linus Torvalds1da177e2005-04-16 15:20:36 -07004359static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4360{
Trond Myklebust256e48b2012-06-21 11:18:13 -04004361 unsigned int savep;
Fred Isamandae100c2011-07-30 20:52:37 -04004362 uint32_t attrlen, bitmap[3] = {0};
Linus Torvalds1da177e2005-04-16 15:20:36 -07004363 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05004364
Linus Torvalds1da177e2005-04-16 15:20:36 -07004365 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4366 goto xdr_error;
4367 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4368 goto xdr_error;
4369 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4370 goto xdr_error;
4371
4372 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4373 goto xdr_error;
4374 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4375 goto xdr_error;
4376 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4377 goto xdr_error;
4378 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4379 goto xdr_error;
4380 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4381 goto xdr_error;
4382 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4383 goto xdr_error;
4384
4385 status = verify_attr_len(xdr, savep, attrlen);
4386xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07004387 dprintk("%s: xdr returned %d!\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004388 return status;
4389}
4390
4391static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4392{
Trond Myklebust256e48b2012-06-21 11:18:13 -04004393 unsigned int savep;
Fred Isamandae100c2011-07-30 20:52:37 -04004394 uint32_t attrlen, bitmap[3] = {0};
Linus Torvalds1da177e2005-04-16 15:20:36 -07004395 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05004396
Linus Torvalds1da177e2005-04-16 15:20:36 -07004397 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4398 goto xdr_error;
4399 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4400 goto xdr_error;
4401 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4402 goto xdr_error;
4403
4404 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4405 goto xdr_error;
4406 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4407 goto xdr_error;
4408
4409 status = verify_attr_len(xdr, savep, attrlen);
4410xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07004411 dprintk("%s: xdr returned %d!\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004412 return status;
4413}
4414
Andy Adamson88034c32012-05-23 05:02:34 -04004415static int decode_threshold_hint(struct xdr_stream *xdr,
4416 uint32_t *bitmap,
4417 uint64_t *res,
4418 uint32_t hint_bit)
4419{
4420 __be32 *p;
4421
4422 *res = 0;
4423 if (likely(bitmap[0] & hint_bit)) {
4424 p = xdr_inline_decode(xdr, 8);
4425 if (unlikely(!p))
4426 goto out_overflow;
4427 xdr_decode_hyper(p, res);
4428 }
4429 return 0;
4430out_overflow:
4431 print_overflow_msg(__func__, xdr);
4432 return -EIO;
4433}
4434
4435static int decode_first_threshold_item4(struct xdr_stream *xdr,
4436 struct nfs4_threshold *res)
4437{
Trond Myklebust256e48b2012-06-21 11:18:13 -04004438 __be32 *p;
4439 unsigned int savep;
Andy Adamson88034c32012-05-23 05:02:34 -04004440 uint32_t bitmap[3] = {0,}, attrlen;
4441 int status;
4442
4443 /* layout type */
4444 p = xdr_inline_decode(xdr, 4);
4445 if (unlikely(!p)) {
4446 print_overflow_msg(__func__, xdr);
4447 return -EIO;
4448 }
4449 res->l_type = be32_to_cpup(p);
4450
4451 /* thi_hintset bitmap */
4452 status = decode_attr_bitmap(xdr, bitmap);
4453 if (status < 0)
4454 goto xdr_error;
4455
4456 /* thi_hintlist length */
4457 status = decode_attr_length(xdr, &attrlen, &savep);
4458 if (status < 0)
4459 goto xdr_error;
4460 /* thi_hintlist */
4461 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4462 if (status < 0)
4463 goto xdr_error;
4464 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4465 if (status < 0)
4466 goto xdr_error;
4467 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4468 THRESHOLD_RD_IO);
4469 if (status < 0)
4470 goto xdr_error;
4471 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4472 THRESHOLD_WR_IO);
4473 if (status < 0)
4474 goto xdr_error;
4475
4476 status = verify_attr_len(xdr, savep, attrlen);
4477 res->bm = bitmap[0];
4478
4479 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4480 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4481 res->wr_io_sz);
4482xdr_error:
4483 dprintk("%s ret=%d!\n", __func__, status);
4484 return status;
4485}
4486
4487/*
4488 * Thresholds on pNFS direct I/O vrs MDS I/O
4489 */
4490static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4491 uint32_t *bitmap,
4492 struct nfs4_threshold *res)
4493{
4494 __be32 *p;
4495 int status = 0;
4496 uint32_t num;
4497
4498 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4499 return -EIO;
Trond Myklebust029c5342012-06-05 09:35:44 -04004500 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
Trond Myklebust1549210f2012-06-05 09:16:47 -04004501 /* Did the server return an unrequested attribute? */
4502 if (unlikely(res == NULL))
4503 return -EREMOTEIO;
Andy Adamson88034c32012-05-23 05:02:34 -04004504 p = xdr_inline_decode(xdr, 4);
4505 if (unlikely(!p))
4506 goto out_overflow;
4507 num = be32_to_cpup(p);
4508 if (num == 0)
4509 return 0;
4510 if (num > 1)
4511 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4512 "drivers per filesystem not supported\n",
4513 __func__);
4514
4515 status = decode_first_threshold_item4(xdr, res);
Trond Myklebust029c5342012-06-05 09:35:44 -04004516 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
Andy Adamson88034c32012-05-23 05:02:34 -04004517 }
4518 return status;
4519out_overflow:
4520 print_overflow_msg(__func__, xdr);
4521 return -EIO;
4522}
4523
Bryan Schumakerae42c702010-10-21 16:33:17 -04004524static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4525 struct nfs_fattr *fattr, struct nfs_fh *fh,
David Quigleyaa9c2662013-05-22 12:50:44 -04004526 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label,
Trond Myklebust6926afd2012-01-07 13:22:46 -05004527 const struct nfs_server *server)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004528{
Trond Myklebustbca79472009-03-11 14:10:26 -04004529 int status;
4530 umode_t fmode = 0;
Bryan Schumakerae42c702010-10-21 16:33:17 -04004531 uint32_t type;
Trond Myklebustee7b75f2011-06-16 13:15:41 -04004532 int32_t err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004533
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004534 status = decode_attr_type(xdr, bitmap, &type);
4535 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004536 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004537 fattr->mode = 0;
4538 if (status != 0) {
4539 fattr->mode |= nfs_type2fmt[type];
4540 fattr->valid |= status;
4541 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07004542
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004543 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4544 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004545 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004546 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004547
4548 status = decode_attr_size(xdr, bitmap, &fattr->size);
4549 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004550 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004551 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004552
4553 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4554 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004555 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004556 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004557
Trond Myklebustee7b75f2011-06-16 13:15:41 -04004558 err = 0;
4559 status = decode_attr_error(xdr, bitmap, &err);
Bryan Schumakerae42c702010-10-21 16:33:17 -04004560 if (status < 0)
4561 goto xdr_error;
4562
4563 status = decode_attr_filehandle(xdr, bitmap, fh);
4564 if (status < 0)
4565 goto xdr_error;
4566
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004567 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4568 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004569 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004570 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004571
Trond Myklebust8b7e3f42012-01-30 15:43:56 -05004572 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004573 if (status < 0)
Trond Myklebust683b57b2006-06-09 09:34:22 -04004574 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004575 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004576
4577 status = decode_attr_mode(xdr, bitmap, &fmode);
4578 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004579 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004580 if (status != 0) {
4581 fattr->mode |= fmode;
4582 fattr->valid |= status;
4583 }
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004584
4585 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4586 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004587 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004588 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004589
Trond Myklebust6926afd2012-01-07 13:22:46 -05004590 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004591 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004592 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004593 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004594
Trond Myklebust6926afd2012-01-07 13:22:46 -05004595 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004596 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004597 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004598 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004599
4600 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4601 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004602 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004603 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004604
4605 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4606 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004607 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004608 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004609
4610 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4611 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004612 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004613 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004614
4615 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4616 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004617 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004618 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004619
4620 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4621 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004622 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004623 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004624
Trond Myklebust28331a42011-04-27 13:47:52 -04004625 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004626 if (status < 0)
Manoj Naik99baf622006-06-09 09:34:24 -04004627 goto xdr_error;
Trond Myklebust28331a42011-04-27 13:47:52 -04004628 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004629
Andy Adamson88034c32012-05-23 05:02:34 -04004630 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4631 if (status < 0)
4632 goto xdr_error;
4633
David Quigleyaa9c2662013-05-22 12:50:44 -04004634 if (label) {
4635 status = decode_attr_security_label(xdr, bitmap, label);
4636 if (status < 0)
4637 goto xdr_error;
4638 fattr->valid |= status;
4639 }
4640
Bryan Schumakerae42c702010-10-21 16:33:17 -04004641xdr_error:
4642 dprintk("%s: xdr returned %d\n", __func__, -status);
4643 return status;
4644}
4645
4646static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
Trond Myklebust8b7e3f42012-01-30 15:43:56 -05004647 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
David Quigleyaa9c2662013-05-22 12:50:44 -04004648 struct nfs4_label *label, const struct nfs_server *server)
Bryan Schumakerae42c702010-10-21 16:33:17 -04004649{
Trond Myklebust256e48b2012-06-21 11:18:13 -04004650 unsigned int savep;
Bryan Schumakerae42c702010-10-21 16:33:17 -04004651 uint32_t attrlen,
Fred Isamandae100c2011-07-30 20:52:37 -04004652 bitmap[3] = {0};
Bryan Schumakerae42c702010-10-21 16:33:17 -04004653 int status;
4654
4655 status = decode_op_hdr(xdr, OP_GETATTR);
4656 if (status < 0)
4657 goto xdr_error;
4658
4659 status = decode_attr_bitmap(xdr, bitmap);
4660 if (status < 0)
4661 goto xdr_error;
4662
4663 status = decode_attr_length(xdr, &attrlen, &savep);
4664 if (status < 0)
4665 goto xdr_error;
4666
David Quigleyaa9c2662013-05-22 12:50:44 -04004667 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc,
4668 label, server);
Bryan Schumakerae42c702010-10-21 16:33:17 -04004669 if (status < 0)
4670 goto xdr_error;
4671
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004672 status = verify_attr_len(xdr, savep, attrlen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004673xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07004674 dprintk("%s: xdr returned %d\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004675 return status;
4676}
4677
David Quigleyaa9c2662013-05-22 12:50:44 -04004678static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4679 struct nfs4_label *label, const struct nfs_server *server)
4680{
4681 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server);
4682}
4683
Bryan Schumakerae42c702010-10-21 16:33:17 -04004684static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
Trond Myklebust6926afd2012-01-07 13:22:46 -05004685 const struct nfs_server *server)
Bryan Schumakerae42c702010-10-21 16:33:17 -04004686{
David Quigleyaa9c2662013-05-22 12:50:44 -04004687 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server);
Bryan Schumakerae42c702010-10-21 16:33:17 -04004688}
Linus Torvalds1da177e2005-04-16 15:20:36 -07004689
Andy Adamson504913f2010-10-20 00:17:57 -04004690/*
4691 * Decode potentially multiple layout types. Currently we only support
4692 * one layout driver per file system.
4693 */
4694static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4695 uint32_t *layouttype)
4696{
Trond Myklebustb8a8a0d2013-08-20 21:08:56 -04004697 __be32 *p;
Andy Adamson504913f2010-10-20 00:17:57 -04004698 int num;
4699
4700 p = xdr_inline_decode(xdr, 4);
4701 if (unlikely(!p))
4702 goto out_overflow;
4703 num = be32_to_cpup(p);
4704
4705 /* pNFS is not supported by the underlying file system */
4706 if (num == 0) {
4707 *layouttype = 0;
4708 return 0;
4709 }
4710 if (num > 1)
Weston Andros Adamsona0308892012-01-26 13:32:23 -05004711 printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
4712 "drivers per filesystem not supported\n", __func__);
Andy Adamson504913f2010-10-20 00:17:57 -04004713
4714 /* Decode and set first layout type, move xdr->p past unused types */
4715 p = xdr_inline_decode(xdr, num * 4);
4716 if (unlikely(!p))
4717 goto out_overflow;
4718 *layouttype = be32_to_cpup(p);
4719 return 0;
4720out_overflow:
4721 print_overflow_msg(__func__, xdr);
4722 return -EIO;
4723}
4724
4725/*
4726 * The type of file system exported.
4727 * Note we must ensure that layouttype is set in any non-error case.
4728 */
4729static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4730 uint32_t *layouttype)
4731{
4732 int status = 0;
4733
4734 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4735 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4736 return -EIO;
4737 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4738 status = decode_first_pnfs_layout_type(xdr, layouttype);
4739 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4740 } else
4741 *layouttype = 0;
4742 return status;
4743}
4744
Fred Isamandae100c2011-07-30 20:52:37 -04004745/*
4746 * The prefered block size for layout directed io
4747 */
4748static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4749 uint32_t *res)
4750{
4751 __be32 *p;
4752
4753 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4754 *res = 0;
4755 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4756 p = xdr_inline_decode(xdr, 4);
4757 if (unlikely(!p)) {
4758 print_overflow_msg(__func__, xdr);
4759 return -EIO;
4760 }
4761 *res = be32_to_cpup(p);
4762 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4763 }
4764 return 0;
4765}
4766
Linus Torvalds1da177e2005-04-16 15:20:36 -07004767static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4768{
Trond Myklebust256e48b2012-06-21 11:18:13 -04004769 unsigned int savep;
Fred Isamandae100c2011-07-30 20:52:37 -04004770 uint32_t attrlen, bitmap[3];
Linus Torvalds1da177e2005-04-16 15:20:36 -07004771 int status;
4772
4773 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4774 goto xdr_error;
4775 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4776 goto xdr_error;
4777 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4778 goto xdr_error;
4779
4780 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4781
4782 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4783 goto xdr_error;
4784 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4785 goto xdr_error;
4786 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4787 goto xdr_error;
4788 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4789 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4790 goto xdr_error;
4791 fsinfo->wtpref = fsinfo->wtmax;
Ricardo Labiaga55b6e772010-10-12 16:30:06 -07004792 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4793 if (status != 0)
4794 goto xdr_error;
Andy Adamson504913f2010-10-20 00:17:57 -04004795 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4796 if (status != 0)
4797 goto xdr_error;
Fred Isamandae100c2011-07-30 20:52:37 -04004798 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4799 if (status)
4800 goto xdr_error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004801
4802 status = verify_attr_len(xdr, savep, attrlen);
4803xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07004804 dprintk("%s: xdr returned %d!\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004805 return status;
4806}
4807
4808static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4809{
Al Viro8687b632006-10-19 23:28:48 -07004810 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004811 uint32_t len;
4812 int status;
4813
Trond Myklebust99367812007-07-17 21:52:41 -04004814 /* Zero handle first to allow comparisons */
4815 memset(fh, 0, sizeof(*fh));
4816
Linus Torvalds1da177e2005-04-16 15:20:36 -07004817 status = decode_op_hdr(xdr, OP_GETFH);
4818 if (status)
4819 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004820
Benny Halevyc0eae662009-08-14 17:20:14 +03004821 p = xdr_inline_decode(xdr, 4);
4822 if (unlikely(!p))
4823 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004824 len = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004825 if (len > NFS4_FHSIZE)
4826 return -EIO;
4827 fh->size = len;
Benny Halevyc0eae662009-08-14 17:20:14 +03004828 p = xdr_inline_decode(xdr, len);
4829 if (unlikely(!p))
4830 goto out_overflow;
Benny Halevy99398d02009-08-14 17:20:05 +03004831 memcpy(fh->data, p, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004832 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004833out_overflow:
4834 print_overflow_msg(__func__, xdr);
4835 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004836}
4837
4838static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4839{
4840 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05004841
Linus Torvalds1da177e2005-04-16 15:20:36 -07004842 status = decode_op_hdr(xdr, OP_LINK);
4843 if (status)
4844 return status;
4845 return decode_change_info(xdr, cinfo);
4846}
4847
4848/*
4849 * We create the owner, so we know a proper owner.id length is 4.
4850 */
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004851static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004852{
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004853 uint64_t offset, length, clientid;
Al Viro8687b632006-10-19 23:28:48 -07004854 __be32 *p;
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004855 uint32_t namelen, type;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004856
Bryan Schumakerbabddc72010-10-20 15:44:29 -04004857 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
Benny Halevyc0eae662009-08-14 17:20:14 +03004858 if (unlikely(!p))
4859 goto out_overflow;
Bryan Schumakerbabddc72010-10-20 15:44:29 -04004860 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
Benny Halevy3ceb4db2009-08-14 17:19:41 +03004861 p = xdr_decode_hyper(p, &length);
Bryan Schumakerbabddc72010-10-20 15:44:29 -04004862 type = be32_to_cpup(p++); /* 4 byte read */
4863 if (fl != NULL) { /* manipulate file lock */
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004864 fl->fl_start = (loff_t)offset;
4865 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4866 if (length == ~(uint64_t)0)
4867 fl->fl_end = OFFSET_MAX;
4868 fl->fl_type = F_WRLCK;
4869 if (type & 1)
4870 fl->fl_type = F_RDLCK;
4871 fl->fl_pid = 0;
4872 }
Bryan Schumakerbabddc72010-10-20 15:44:29 -04004873 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4874 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4875 p = xdr_inline_decode(xdr, namelen); /* variable size field */
Benny Halevyc0eae662009-08-14 17:20:14 +03004876 if (likely(p))
4877 return -NFS4ERR_DENIED;
4878out_overflow:
4879 print_overflow_msg(__func__, xdr);
4880 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004881}
4882
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004883static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004884{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004885 int status;
4886
4887 status = decode_op_hdr(xdr, OP_LOCK);
Trond Myklebustc1d51932008-04-07 13:20:54 -04004888 if (status == -EIO)
4889 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004890 if (status == 0) {
Benny Halevy07d30432009-08-14 17:19:52 +03004891 status = decode_stateid(xdr, &res->stateid);
4892 if (unlikely(status))
4893 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004894 } else if (status == -NFS4ERR_DENIED)
Trond Myklebustc1d51932008-04-07 13:20:54 -04004895 status = decode_lock_denied(xdr, NULL);
4896 if (res->open_seqid != NULL)
4897 nfs_increment_open_seqid(status, res->open_seqid);
4898 nfs_increment_lock_seqid(status, res->lock_seqid);
4899out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004900 return status;
4901}
4902
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004903static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004904{
4905 int status;
4906 status = decode_op_hdr(xdr, OP_LOCKT);
4907 if (status == -NFS4ERR_DENIED)
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004908 return decode_lock_denied(xdr, res->denied);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004909 return status;
4910}
4911
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004912static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004913{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004914 int status;
4915
4916 status = decode_op_hdr(xdr, OP_LOCKU);
Trond Myklebustc1d51932008-04-07 13:20:54 -04004917 if (status != -EIO)
4918 nfs_increment_lock_seqid(status, res->seqid);
Benny Halevy07d30432009-08-14 17:19:52 +03004919 if (status == 0)
4920 status = decode_stateid(xdr, &res->stateid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004921 return status;
4922}
4923
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04004924static int decode_release_lockowner(struct xdr_stream *xdr)
4925{
4926 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4927}
4928
Linus Torvalds1da177e2005-04-16 15:20:36 -07004929static int decode_lookup(struct xdr_stream *xdr)
4930{
4931 return decode_op_hdr(xdr, OP_LOOKUP);
4932}
4933
4934/* This is too sick! */
Trond Myklebust7d160a62015-09-05 19:06:57 -04004935static int decode_space_limit(struct xdr_stream *xdr,
4936 unsigned long *pagemod_limit)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004937{
Andy Adamson05d564f2008-12-23 16:06:15 -05004938 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004939 uint32_t limit_type, nblocks, blocksize;
Trond Myklebust7d160a62015-09-05 19:06:57 -04004940 u64 maxsize = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004941
Benny Halevyc0eae662009-08-14 17:20:14 +03004942 p = xdr_inline_decode(xdr, 12);
4943 if (unlikely(!p))
4944 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004945 limit_type = be32_to_cpup(p++);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004946 switch (limit_type) {
Trond Myklebust7d160a62015-09-05 19:06:57 -04004947 case NFS4_LIMIT_SIZE:
4948 xdr_decode_hyper(p, &maxsize);
Andy Adamson05d564f2008-12-23 16:06:15 -05004949 break;
Trond Myklebust7d160a62015-09-05 19:06:57 -04004950 case NFS4_LIMIT_BLOCKS:
Benny Halevy6f723f72009-08-14 17:19:37 +03004951 nblocks = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03004952 blocksize = be32_to_cpup(p);
Trond Myklebust7d160a62015-09-05 19:06:57 -04004953 maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004954 }
Trond Myklebust7d160a62015-09-05 19:06:57 -04004955 maxsize >>= PAGE_CACHE_SHIFT;
4956 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004957 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004958out_overflow:
4959 print_overflow_msg(__func__, xdr);
4960 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004961}
4962
Trond Myklebust6ae37332015-01-30 14:21:14 -05004963static int decode_rw_delegation(struct xdr_stream *xdr,
4964 uint32_t delegation_type,
4965 struct nfs_openres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004966{
Andy Adamson05d564f2008-12-23 16:06:15 -05004967 __be32 *p;
Benny Halevy07d30432009-08-14 17:19:52 +03004968 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004969
Benny Halevy07d30432009-08-14 17:19:52 +03004970 status = decode_stateid(xdr, &res->delegation);
4971 if (unlikely(status))
4972 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004973 p = xdr_inline_decode(xdr, 4);
4974 if (unlikely(!p))
4975 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004976 res->do_recall = be32_to_cpup(p);
Andy Adamson05d564f2008-12-23 16:06:15 -05004977
Linus Torvalds1da177e2005-04-16 15:20:36 -07004978 switch (delegation_type) {
Andy Adamson05d564f2008-12-23 16:06:15 -05004979 case NFS4_OPEN_DELEGATE_READ:
4980 res->delegation_type = FMODE_READ;
4981 break;
4982 case NFS4_OPEN_DELEGATE_WRITE:
4983 res->delegation_type = FMODE_WRITE|FMODE_READ;
Trond Myklebust7d160a62015-09-05 19:06:57 -04004984 if (decode_space_limit(xdr, &res->pagemod_limit) < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004985 return -EIO;
4986 }
David Howells7539bba2006-08-22 20:06:09 -04004987 return decode_ace(xdr, NULL, res->server->nfs_client);
Benny Halevyc0eae662009-08-14 17:20:14 +03004988out_overflow:
4989 print_overflow_msg(__func__, xdr);
4990 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004991}
4992
Trond Myklebust6ae37332015-01-30 14:21:14 -05004993static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4994{
4995 __be32 *p;
4996 uint32_t why_no_delegation;
4997
4998 p = xdr_inline_decode(xdr, 4);
4999 if (unlikely(!p))
5000 goto out_overflow;
5001 why_no_delegation = be32_to_cpup(p);
5002 switch (why_no_delegation) {
5003 case WND4_CONTENTION:
5004 case WND4_RESOURCE:
5005 xdr_inline_decode(xdr, 4);
5006 /* Ignore for now */
5007 }
5008 return 0;
5009out_overflow:
5010 print_overflow_msg(__func__, xdr);
5011 return -EIO;
5012}
5013
5014static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5015{
5016 __be32 *p;
5017 uint32_t delegation_type;
5018
5019 p = xdr_inline_decode(xdr, 4);
5020 if (unlikely(!p))
5021 goto out_overflow;
5022 delegation_type = be32_to_cpup(p);
5023 res->delegation_type = 0;
5024 switch (delegation_type) {
5025 case NFS4_OPEN_DELEGATE_NONE:
5026 return 0;
5027 case NFS4_OPEN_DELEGATE_READ:
5028 case NFS4_OPEN_DELEGATE_WRITE:
5029 return decode_rw_delegation(xdr, delegation_type, res);
5030 case NFS4_OPEN_DELEGATE_NONE_EXT:
5031 return decode_no_delegation(xdr, res);
5032 }
5033 return -EIO;
5034out_overflow:
5035 print_overflow_msg(__func__, xdr);
5036 return -EIO;
5037}
5038
Linus Torvalds1da177e2005-04-16 15:20:36 -07005039static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
5040{
Andy Adamson05d564f2008-12-23 16:06:15 -05005041 __be32 *p;
Jeff Laytonaa53ed52007-06-05 14:49:03 -04005042 uint32_t savewords, bmlen, i;
Andy Adamson05d564f2008-12-23 16:06:15 -05005043 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005044
Trond Myklebustc7848f62013-12-04 17:39:23 -05005045 if (!__decode_op_hdr(xdr, OP_OPEN, &status))
5046 return status;
5047 nfs_increment_open_seqid(status, res->seqid);
5048 if (status)
5049 return status;
5050 status = decode_stateid(xdr, &res->stateid);
Benny Halevy07d30432009-08-14 17:19:52 +03005051 if (unlikely(status))
Andy Adamson05d564f2008-12-23 16:06:15 -05005052 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005053
Andy Adamson05d564f2008-12-23 16:06:15 -05005054 decode_change_info(xdr, &res->cinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005055
Benny Halevyc0eae662009-08-14 17:20:14 +03005056 p = xdr_inline_decode(xdr, 8);
5057 if (unlikely(!p))
5058 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03005059 res->rflags = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03005060 bmlen = be32_to_cpup(p);
Andy Adamson05d564f2008-12-23 16:06:15 -05005061 if (bmlen > 10)
5062 goto xdr_error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005063
Benny Halevyc0eae662009-08-14 17:20:14 +03005064 p = xdr_inline_decode(xdr, bmlen << 2);
5065 if (unlikely(!p))
5066 goto out_overflow;
Jeff Laytonaa53ed52007-06-05 14:49:03 -04005067 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
5068 for (i = 0; i < savewords; ++i)
Benny Halevy6f723f72009-08-14 17:19:37 +03005069 res->attrset[i] = be32_to_cpup(p++);
Jeff Laytonaa53ed52007-06-05 14:49:03 -04005070 for (; i < NFS4_BITMAP_SIZE; i++)
5071 res->attrset[i] = 0;
5072
Linus Torvalds1da177e2005-04-16 15:20:36 -07005073 return decode_delegation(xdr, res);
5074xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07005075 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005076 return -EIO;
Benny Halevyc0eae662009-08-14 17:20:14 +03005077out_overflow:
5078 print_overflow_msg(__func__, xdr);
5079 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005080}
5081
5082static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
5083{
Linus Torvalds1da177e2005-04-16 15:20:36 -07005084 int status;
5085
Andy Adamson05d564f2008-12-23 16:06:15 -05005086 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
Trond Myklebustc1d51932008-04-07 13:20:54 -04005087 if (status != -EIO)
5088 nfs_increment_open_seqid(status, res->seqid);
Benny Halevy07d30432009-08-14 17:19:52 +03005089 if (!status)
5090 status = decode_stateid(xdr, &res->stateid);
5091 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005092}
5093
5094static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
5095{
Linus Torvalds1da177e2005-04-16 15:20:36 -07005096 int status;
5097
5098 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
Trond Myklebustc1d51932008-04-07 13:20:54 -04005099 if (status != -EIO)
5100 nfs_increment_open_seqid(status, res->seqid);
Benny Halevy07d30432009-08-14 17:19:52 +03005101 if (!status)
5102 status = decode_stateid(xdr, &res->stateid);
5103 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005104}
5105
5106static int decode_putfh(struct xdr_stream *xdr)
5107{
5108 return decode_op_hdr(xdr, OP_PUTFH);
5109}
5110
5111static int decode_putrootfh(struct xdr_stream *xdr)
5112{
5113 return decode_op_hdr(xdr, OP_PUTROOTFH);
5114}
5115
Anna Schumaker9137bdf2014-05-06 09:12:25 -04005116static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req,
5117 struct nfs_pgio_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005118{
Al Viro8687b632006-10-19 23:28:48 -07005119 __be32 *p;
Trond Myklebust64bd5772012-06-20 22:35:05 -04005120 uint32_t count, eof, recvd;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005121 int status;
5122
5123 status = decode_op_hdr(xdr, OP_READ);
5124 if (status)
5125 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03005126 p = xdr_inline_decode(xdr, 8);
5127 if (unlikely(!p))
5128 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03005129 eof = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03005130 count = be32_to_cpup(p);
Trond Myklebust64bd5772012-06-20 22:35:05 -04005131 recvd = xdr_read_pages(xdr, count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005132 if (count > recvd) {
Chuck Leverfe82a182007-09-11 18:01:10 -04005133 dprintk("NFS: server cheating in read reply: "
Linus Torvalds1da177e2005-04-16 15:20:36 -07005134 "count %u > recvd %u\n", count, recvd);
5135 count = recvd;
5136 eof = 0;
5137 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07005138 res->eof = eof;
5139 res->count = count;
5140 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03005141out_overflow:
5142 print_overflow_msg(__func__, xdr);
5143 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005144}
5145
5146static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5147{
Chuck Leverbcecff72007-10-26 13:32:03 -04005148 int status;
Chuck Levercd937102012-03-02 17:14:31 -05005149 __be32 verf[2];
Linus Torvalds1da177e2005-04-16 15:20:36 -07005150
5151 status = decode_op_hdr(xdr, OP_READDIR);
Benny Halevydb942bb2009-08-14 17:19:56 +03005152 if (!status)
5153 status = decode_verifier(xdr, readdir->verifier.data);
5154 if (unlikely(status))
Linus Torvalds1da177e2005-04-16 15:20:36 -07005155 return status;
Chuck Levercd937102012-03-02 17:14:31 -05005156 memcpy(verf, readdir->verifier.data, sizeof(verf));
Fred Isaman44109242008-04-02 15:21:15 +03005157 dprintk("%s: verifier = %08x:%08x\n",
Chuck Levercd937102012-03-02 17:14:31 -05005158 __func__, verf[0], verf[1]);
Trond Myklebust64bd5772012-06-20 22:35:05 -04005159 return xdr_read_pages(xdr, xdr->buf->page_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005160}
5161
5162static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5163{
5164 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
Chuck Leverbcecff72007-10-26 13:32:03 -04005165 u32 len, recvd;
Al Viro8687b632006-10-19 23:28:48 -07005166 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005167 int status;
5168
5169 status = decode_op_hdr(xdr, OP_READLINK);
5170 if (status)
5171 return status;
5172
5173 /* Convert length of symlink */
Benny Halevyc0eae662009-08-14 17:20:14 +03005174 p = xdr_inline_decode(xdr, 4);
5175 if (unlikely(!p))
5176 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03005177 len = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005178 if (len >= rcvbuf->page_len || len <= 0) {
Chuck Leverfe82a182007-09-11 18:01:10 -04005179 dprintk("nfs: server returned giant symlink!\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07005180 return -ENAMETOOLONG;
5181 }
Trond Myklebust64bd5772012-06-20 22:35:05 -04005182 recvd = xdr_read_pages(xdr, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005183 if (recvd < len) {
Chuck Leverfe82a182007-09-11 18:01:10 -04005184 dprintk("NFS: server cheating in readlink reply: "
Linus Torvalds1da177e2005-04-16 15:20:36 -07005185 "count %u > recvd %u\n", len, recvd);
5186 return -EIO;
5187 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07005188 /*
5189 * The XDR encode routine has set things up so that
5190 * the link text will be copied directly into the
5191 * buffer. We just have to do overflow-checking,
5192 * and and null-terminate the text (the VFS expects
5193 * null-termination).
5194 */
Chuck Leverb4687da2010-09-21 16:55:48 -04005195 xdr_terminate_string(rcvbuf, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005196 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03005197out_overflow:
5198 print_overflow_msg(__func__, xdr);
5199 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005200}
5201
5202static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5203{
5204 int status;
5205
5206 status = decode_op_hdr(xdr, OP_REMOVE);
5207 if (status)
5208 goto out;
5209 status = decode_change_info(xdr, cinfo);
5210out:
5211 return status;
5212}
5213
5214static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5215 struct nfs4_change_info *new_cinfo)
5216{
5217 int status;
5218
5219 status = decode_op_hdr(xdr, OP_RENAME);
5220 if (status)
5221 goto out;
5222 if ((status = decode_change_info(xdr, old_cinfo)))
5223 goto out;
5224 status = decode_change_info(xdr, new_cinfo);
5225out:
5226 return status;
5227}
5228
5229static int decode_renew(struct xdr_stream *xdr)
5230{
5231 return decode_op_hdr(xdr, OP_RENEW);
5232}
5233
Trond Myklebust56ae19f2005-10-27 22:12:40 -04005234static int
5235decode_restorefh(struct xdr_stream *xdr)
5236{
5237 return decode_op_hdr(xdr, OP_RESTOREFH);
5238}
5239
J. Bruce Fields029d1052005-06-22 17:16:22 +00005240static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
Andy Adamsonbf118a32011-12-07 11:55:27 -05005241 struct nfs_getaclres *res)
J. Bruce Fields029d1052005-06-22 17:16:22 +00005242{
Trond Myklebust256e48b2012-06-21 11:18:13 -04005243 unsigned int savep;
J. Bruce Fields029d1052005-06-22 17:16:22 +00005244 uint32_t attrlen,
Fred Isamandae100c2011-07-30 20:52:37 -04005245 bitmap[3] = {0};
J. Bruce Fields029d1052005-06-22 17:16:22 +00005246 int status;
Trond Myklebustcff298c2012-08-14 17:14:17 -04005247 unsigned int pg_offset;
J. Bruce Fields029d1052005-06-22 17:16:22 +00005248
Andy Adamsonbf118a32011-12-07 11:55:27 -05005249 res->acl_len = 0;
J. Bruce Fields029d1052005-06-22 17:16:22 +00005250 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5251 goto out;
Sachin Prabhu5a006892012-04-17 14:35:39 +01005252
Trond Myklebust519d3952012-08-14 17:30:10 -04005253 xdr_enter_page(xdr, xdr->buf->page_len);
5254
Trond Myklebustcff298c2012-08-14 17:14:17 -04005255 /* Calculate the offset of the page data */
5256 pg_offset = xdr->buf->head[0].iov_len;
Sachin Prabhu5a006892012-04-17 14:35:39 +01005257
J. Bruce Fields029d1052005-06-22 17:16:22 +00005258 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5259 goto out;
5260 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5261 goto out;
5262
5263 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5264 return -EIO;
5265 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
J. Bruce Fields029d1052005-06-22 17:16:22 +00005266
Andy Adamsonbf118a32011-12-07 11:55:27 -05005267 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5268 * are stored with the acl data to handle the problem of
5269 * variable length bitmaps.*/
Trond Myklebustcff298c2012-08-14 17:14:17 -04005270 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
Trond Myklebust519d3952012-08-14 17:30:10 -04005271 res->acl_len = attrlen;
Trond Myklebust1f1ea6c2012-08-26 11:44:43 -07005272
5273 /* Check for receive buffer overflow */
5274 if (res->acl_len > (xdr->nwords << 2) ||
5275 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5276 res->acl_flags |= NFS4_ACL_TRUNC;
Trond Myklebust519d3952012-08-14 17:30:10 -04005277 dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
Trond Myklebustcff298c2012-08-14 17:14:17 -04005278 attrlen, xdr->nwords << 2);
J. Bruce Fields029d1052005-06-22 17:16:22 +00005279 }
J. Bruce Fields8c233cf2005-10-13 16:54:27 -04005280 } else
5281 status = -EOPNOTSUPP;
J. Bruce Fields029d1052005-06-22 17:16:22 +00005282
5283out:
5284 return status;
5285}
5286
Linus Torvalds1da177e2005-04-16 15:20:36 -07005287static int
5288decode_savefh(struct xdr_stream *xdr)
5289{
5290 return decode_op_hdr(xdr, OP_SAVEFH);
5291}
5292
Benny Halevy9e9ecc02009-04-01 09:22:00 -04005293static int decode_setattr(struct xdr_stream *xdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005294{
Al Viro8687b632006-10-19 23:28:48 -07005295 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005296 uint32_t bmlen;
5297 int status;
5298
Linus Torvalds1da177e2005-04-16 15:20:36 -07005299 status = decode_op_hdr(xdr, OP_SETATTR);
5300 if (status)
5301 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03005302 p = xdr_inline_decode(xdr, 4);
5303 if (unlikely(!p))
5304 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03005305 bmlen = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03005306 p = xdr_inline_decode(xdr, bmlen << 2);
5307 if (likely(p))
5308 return 0;
5309out_overflow:
5310 print_overflow_msg(__func__, xdr);
5311 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005312}
5313
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04005314static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005315{
Al Viro8687b632006-10-19 23:28:48 -07005316 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005317 uint32_t opnum;
5318 int32_t nfserr;
5319
Benny Halevyc0eae662009-08-14 17:20:14 +03005320 p = xdr_inline_decode(xdr, 8);
5321 if (unlikely(!p))
5322 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03005323 opnum = be32_to_cpup(p++);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005324 if (opnum != OP_SETCLIENTID) {
Chuck Leverfe82a182007-09-11 18:01:10 -04005325 dprintk("nfs: decode_setclientid: Server returned operation"
Andy Adamson6c0195a2008-12-23 16:06:15 -05005326 " %d\n", opnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005327 return -EIO;
5328 }
Benny Halevycccddf42009-08-14 17:20:19 +03005329 nfserr = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005330 if (nfserr == NFS_OK) {
Benny Halevyc0eae662009-08-14 17:20:14 +03005331 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5332 if (unlikely(!p))
5333 goto out_overflow;
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04005334 p = xdr_decode_hyper(p, &res->clientid);
5335 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005336 } else if (nfserr == NFSERR_CLID_INUSE) {
5337 uint32_t len;
5338
5339 /* skip netid string */
Benny Halevyc0eae662009-08-14 17:20:14 +03005340 p = xdr_inline_decode(xdr, 4);
5341 if (unlikely(!p))
5342 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03005343 len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03005344 p = xdr_inline_decode(xdr, len);
5345 if (unlikely(!p))
5346 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005347
5348 /* skip uaddr string */
Benny Halevyc0eae662009-08-14 17:20:14 +03005349 p = xdr_inline_decode(xdr, 4);
5350 if (unlikely(!p))
5351 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03005352 len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03005353 p = xdr_inline_decode(xdr, len);
5354 if (unlikely(!p))
5355 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005356 return -NFSERR_CLID_INUSE;
5357 } else
Benny Halevy856dff32008-03-31 17:39:06 +03005358 return nfs4_stat_to_errno(nfserr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005359
5360 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03005361out_overflow:
5362 print_overflow_msg(__func__, xdr);
5363 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005364}
5365
5366static int decode_setclientid_confirm(struct xdr_stream *xdr)
5367{
5368 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5369}
5370
Anna Schumaker9137bdf2014-05-06 09:12:25 -04005371static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005372{
Al Viro8687b632006-10-19 23:28:48 -07005373 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005374 int status;
5375
5376 status = decode_op_hdr(xdr, OP_WRITE);
5377 if (status)
5378 return status;
5379
Trond Myklebust2f2c63b2012-06-08 11:56:09 -04005380 p = xdr_inline_decode(xdr, 8);
Benny Halevyc0eae662009-08-14 17:20:14 +03005381 if (unlikely(!p))
5382 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03005383 res->count = be32_to_cpup(p++);
5384 res->verf->committed = be32_to_cpup(p++);
Trond Myklebust2f2c63b2012-06-08 11:56:09 -04005385 return decode_write_verifier(xdr, &res->verf->verifier);
Benny Halevyc0eae662009-08-14 17:20:14 +03005386out_overflow:
5387 print_overflow_msg(__func__, xdr);
5388 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005389}
5390
5391static int decode_delegreturn(struct xdr_stream *xdr)
5392{
5393 return decode_op_hdr(xdr, OP_DELEGRETURN);
5394}
5395
Chuck Leverfb15b262013-03-16 15:54:34 -04005396static int decode_secinfo_gss(struct xdr_stream *xdr,
5397 struct nfs4_secinfo4 *flavor)
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005398{
Chuck Leverfb15b262013-03-16 15:54:34 -04005399 u32 oid_len;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005400 __be32 *p;
5401
5402 p = xdr_inline_decode(xdr, 4);
5403 if (unlikely(!p))
5404 goto out_overflow;
Chuck Leverfb15b262013-03-16 15:54:34 -04005405 oid_len = be32_to_cpup(p);
5406 if (oid_len > GSS_OID_MAX_LEN)
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005407 goto out_err;
5408
Chuck Leverfb15b262013-03-16 15:54:34 -04005409 p = xdr_inline_decode(xdr, oid_len);
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005410 if (unlikely(!p))
5411 goto out_overflow;
Chuck Leverfb15b262013-03-16 15:54:34 -04005412 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5413 flavor->flavor_info.oid.len = oid_len;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005414
5415 p = xdr_inline_decode(xdr, 8);
5416 if (unlikely(!p))
5417 goto out_overflow;
Chuck Leverfb15b262013-03-16 15:54:34 -04005418 flavor->flavor_info.qop = be32_to_cpup(p++);
5419 flavor->flavor_info.service = be32_to_cpup(p);
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005420
5421 return 0;
5422
5423out_overflow:
5424 print_overflow_msg(__func__, xdr);
5425 return -EIO;
5426out_err:
5427 return -EINVAL;
5428}
5429
Bryan Schumaker31e4dda2012-04-27 13:27:38 -04005430static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005431{
Chuck Leverfb15b262013-03-16 15:54:34 -04005432 struct nfs4_secinfo4 *sec_flavor;
5433 unsigned int i, num_flavors;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005434 int status;
5435 __be32 *p;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005436
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005437 p = xdr_inline_decode(xdr, 4);
5438 if (unlikely(!p))
5439 goto out_overflow;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005440
Bryan Schumakerc3dfc282011-04-13 14:31:31 -04005441 res->flavors->num_flavors = 0;
5442 num_flavors = be32_to_cpup(p);
5443
5444 for (i = 0; i < num_flavors; i++) {
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005445 sec_flavor = &res->flavors->flavors[i];
Bryan Schumakerc3dfc282011-04-13 14:31:31 -04005446 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005447 break;
5448
5449 p = xdr_inline_decode(xdr, 4);
5450 if (unlikely(!p))
5451 goto out_overflow;
5452 sec_flavor->flavor = be32_to_cpup(p);
5453
5454 if (sec_flavor->flavor == RPC_AUTH_GSS) {
Bryan Schumaker613e9012011-04-27 15:28:44 -04005455 status = decode_secinfo_gss(xdr, sec_flavor);
5456 if (status)
5457 goto out;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005458 }
Bryan Schumakerc3dfc282011-04-13 14:31:31 -04005459 res->flavors->num_flavors++;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005460 }
5461
Bryan Schumaker31e4dda2012-04-27 13:27:38 -04005462 status = 0;
Bryan Schumaker613e9012011-04-27 15:28:44 -04005463out:
5464 return status;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005465out_overflow:
5466 print_overflow_msg(__func__, xdr);
5467 return -EIO;
5468}
5469
Bryan Schumaker31e4dda2012-04-27 13:27:38 -04005470static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5471{
5472 int status = decode_op_hdr(xdr, OP_SECINFO);
5473 if (status)
5474 return status;
5475 return decode_secinfo_common(xdr, res);
5476}
5477
Benny Halevy99fe60d2009-04-01 09:22:29 -04005478#if defined(CONFIG_NFS_V4_1)
Bryan Schumaker31e4dda2012-04-27 13:27:38 -04005479static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5480{
5481 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5482 if (status)
5483 return status;
5484 return decode_secinfo_common(xdr, res);
5485}
5486
Weston Andros Adamson2031cd12013-08-13 16:37:32 -04005487static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
5488{
5489 __be32 *p;
5490 uint32_t bitmap_words;
5491 unsigned int i;
5492
5493 p = xdr_inline_decode(xdr, 4);
5494 bitmap_words = be32_to_cpup(p++);
5495 if (bitmap_words > NFS4_OP_MAP_NUM_WORDS)
5496 return -EIO;
5497 p = xdr_inline_decode(xdr, 4 * bitmap_words);
5498 for (i = 0; i < bitmap_words; i++)
5499 op_map->u.words[i] = be32_to_cpup(p++);
5500
5501 return 0;
5502}
5503
Benny Halevy99fe60d2009-04-01 09:22:29 -04005504static int decode_exchange_id(struct xdr_stream *xdr,
5505 struct nfs41_exchange_id_res *res)
5506{
5507 __be32 *p;
5508 uint32_t dummy;
Benny Halevy2460ba52009-08-14 17:20:10 +03005509 char *dummy_str;
Benny Halevy99fe60d2009-04-01 09:22:29 -04005510 int status;
Weston Andros Adamson7d2ed9a2012-02-17 15:20:26 -05005511 uint32_t impl_id_count;
Benny Halevy99fe60d2009-04-01 09:22:29 -04005512
5513 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5514 if (status)
5515 return status;
5516
Benny Halevyc0eae662009-08-14 17:20:14 +03005517 p = xdr_inline_decode(xdr, 8);
5518 if (unlikely(!p))
5519 goto out_overflow;
Trond Myklebust32b01312012-05-26 13:41:04 -04005520 xdr_decode_hyper(p, &res->clientid);
Benny Halevyc0eae662009-08-14 17:20:14 +03005521 p = xdr_inline_decode(xdr, 12);
5522 if (unlikely(!p))
5523 goto out_overflow;
Trond Myklebust32b01312012-05-26 13:41:04 -04005524 res->seqid = be32_to_cpup(p++);
5525 res->flags = be32_to_cpup(p++);
Benny Halevy99fe60d2009-04-01 09:22:29 -04005526
Weston Andros Adamson2031cd12013-08-13 16:37:32 -04005527 res->state_protect.how = be32_to_cpup(p);
5528 switch (res->state_protect.how) {
5529 case SP4_NONE:
5530 break;
5531 case SP4_MACH_CRED:
5532 status = decode_op_map(xdr, &res->state_protect.enforce);
5533 if (status)
5534 return status;
5535 status = decode_op_map(xdr, &res->state_protect.allow);
5536 if (status)
5537 return status;
5538 break;
5539 default:
5540 WARN_ON_ONCE(1);
Benny Halevy99fe60d2009-04-01 09:22:29 -04005541 return -EIO;
Weston Andros Adamson2031cd12013-08-13 16:37:32 -04005542 }
Benny Halevy99fe60d2009-04-01 09:22:29 -04005543
Chuck Leveracdeb692012-05-21 22:46:16 -04005544 /* server_owner4.so_minor_id */
Benny Halevyc0eae662009-08-14 17:20:14 +03005545 p = xdr_inline_decode(xdr, 8);
5546 if (unlikely(!p))
5547 goto out_overflow;
Chuck Leveracdeb692012-05-21 22:46:16 -04005548 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
Benny Halevy99fe60d2009-04-01 09:22:29 -04005549
Chuck Leveracdeb692012-05-21 22:46:16 -04005550 /* server_owner4.so_major_id */
Benny Halevy2460ba52009-08-14 17:20:10 +03005551 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5552 if (unlikely(status))
5553 return status;
Weston Andros Adamson78fe0f42011-05-31 19:05:47 -04005554 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5555 return -EIO;
Chuck Leveracdeb692012-05-21 22:46:16 -04005556 memcpy(res->server_owner->major_id, dummy_str, dummy);
5557 res->server_owner->major_id_sz = dummy;
Weston Andros Adamson78fe0f42011-05-31 19:05:47 -04005558
Chuck Leveracdeb692012-05-21 22:46:16 -04005559 /* server_scope4 */
5560 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5561 if (unlikely(status))
5562 return status;
5563 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5564 return -EIO;
Weston Andros Adamson78fe0f42011-05-31 19:05:47 -04005565 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5566 res->server_scope->server_scope_sz = dummy;
5567
Weston Andros Adamson7d2ed9a2012-02-17 15:20:26 -05005568 /* Implementation Id */
5569 p = xdr_inline_decode(xdr, 4);
5570 if (unlikely(!p))
5571 goto out_overflow;
5572 impl_id_count = be32_to_cpup(p++);
Benny Halevy99fe60d2009-04-01 09:22:29 -04005573
Weston Andros Adamson7d2ed9a2012-02-17 15:20:26 -05005574 if (impl_id_count) {
5575 /* nii_domain */
5576 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5577 if (unlikely(status))
5578 return status;
5579 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5580 return -EIO;
5581 memcpy(res->impl_id->domain, dummy_str, dummy);
5582
5583 /* nii_name */
5584 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5585 if (unlikely(status))
5586 return status;
5587 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5588 return -EIO;
5589 memcpy(res->impl_id->name, dummy_str, dummy);
5590
5591 /* nii_date */
5592 p = xdr_inline_decode(xdr, 12);
5593 if (unlikely(!p))
5594 goto out_overflow;
5595 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5596 res->impl_id->date.nseconds = be32_to_cpup(p);
5597
5598 /* if there's more than one entry, ignore the rest */
5599 }
Benny Halevy99fe60d2009-04-01 09:22:29 -04005600 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03005601out_overflow:
5602 print_overflow_msg(__func__, xdr);
5603 return -EIO;
Benny Halevy99fe60d2009-04-01 09:22:29 -04005604}
Andy Adamsonfc931582009-04-01 09:22:31 -04005605
5606static int decode_chan_attrs(struct xdr_stream *xdr,
5607 struct nfs4_channel_attrs *attrs)
5608{
5609 __be32 *p;
Benny Halevyc9c30dd2011-06-11 17:08:39 -04005610 u32 nr_attrs, val;
Andy Adamsonfc931582009-04-01 09:22:31 -04005611
Benny Halevyc0eae662009-08-14 17:20:14 +03005612 p = xdr_inline_decode(xdr, 28);
5613 if (unlikely(!p))
5614 goto out_overflow;
Benny Halevyc9c30dd2011-06-11 17:08:39 -04005615 val = be32_to_cpup(p++); /* headerpadsz */
5616 if (val)
5617 return -EINVAL; /* no support for header padding yet */
Benny Halevy6f723f72009-08-14 17:19:37 +03005618 attrs->max_rqst_sz = be32_to_cpup(p++);
5619 attrs->max_resp_sz = be32_to_cpup(p++);
5620 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5621 attrs->max_ops = be32_to_cpup(p++);
5622 attrs->max_reqs = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03005623 nr_attrs = be32_to_cpup(p);
Andy Adamsonfc931582009-04-01 09:22:31 -04005624 if (unlikely(nr_attrs > 1)) {
Weston Andros Adamsona0308892012-01-26 13:32:23 -05005625 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5626 "count %u\n", __func__, nr_attrs);
Andy Adamsonfc931582009-04-01 09:22:31 -04005627 return -EINVAL;
5628 }
Benny Halevyc0eae662009-08-14 17:20:14 +03005629 if (nr_attrs == 1) {
5630 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5631 if (unlikely(!p))
5632 goto out_overflow;
5633 }
Andy Adamsonfc931582009-04-01 09:22:31 -04005634 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03005635out_overflow:
5636 print_overflow_msg(__func__, xdr);
5637 return -EIO;
Andy Adamsonfc931582009-04-01 09:22:31 -04005638}
5639
Benny Halevye78291e2009-08-14 17:20:00 +03005640static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5641{
5642 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
Andy Adamsonfc931582009-04-01 09:22:31 -04005643}
5644
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04005645static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5646 struct nfs41_bind_conn_to_session_res *res)
5647{
5648 __be32 *p;
5649 int status;
5650
5651 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5652 if (!status)
Trond Myklebust71a097c2015-02-18 09:27:18 -08005653 status = decode_sessionid(xdr, &res->sessionid);
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04005654 if (unlikely(status))
5655 return status;
5656
5657 /* dir flags, rdma mode bool */
5658 p = xdr_inline_decode(xdr, 8);
5659 if (unlikely(!p))
5660 goto out_overflow;
5661
5662 res->dir = be32_to_cpup(p++);
5663 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5664 return -EIO;
5665 if (be32_to_cpup(p) == 0)
5666 res->use_conn_in_rdma_mode = false;
5667 else
5668 res->use_conn_in_rdma_mode = true;
5669
5670 return 0;
5671out_overflow:
5672 print_overflow_msg(__func__, xdr);
5673 return -EIO;
5674}
5675
Andy Adamsonfc931582009-04-01 09:22:31 -04005676static int decode_create_session(struct xdr_stream *xdr,
5677 struct nfs41_create_session_res *res)
5678{
5679 __be32 *p;
5680 int status;
Andy Adamsonfc931582009-04-01 09:22:31 -04005681
5682 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
Benny Halevye78291e2009-08-14 17:20:00 +03005683 if (!status)
Trond Myklebust79969dd2015-02-18 11:30:18 -08005684 status = decode_sessionid(xdr, &res->sessionid);
Benny Halevye78291e2009-08-14 17:20:00 +03005685 if (unlikely(status))
Andy Adamsonfc931582009-04-01 09:22:31 -04005686 return status;
5687
Andy Adamsonfc931582009-04-01 09:22:31 -04005688 /* seqid, flags */
Benny Halevyc0eae662009-08-14 17:20:14 +03005689 p = xdr_inline_decode(xdr, 8);
5690 if (unlikely(!p))
5691 goto out_overflow;
Trond Myklebust79969dd2015-02-18 11:30:18 -08005692 res->seqid = be32_to_cpup(p++);
5693 res->flags = be32_to_cpup(p);
Andy Adamsonfc931582009-04-01 09:22:31 -04005694
5695 /* Channel attributes */
Trond Myklebust79969dd2015-02-18 11:30:18 -08005696 status = decode_chan_attrs(xdr, &res->fc_attrs);
Andy Adamsonfc931582009-04-01 09:22:31 -04005697 if (!status)
Trond Myklebust79969dd2015-02-18 11:30:18 -08005698 status = decode_chan_attrs(xdr, &res->bc_attrs);
Andy Adamsonfc931582009-04-01 09:22:31 -04005699 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03005700out_overflow:
5701 print_overflow_msg(__func__, xdr);
5702 return -EIO;
Andy Adamsonfc931582009-04-01 09:22:31 -04005703}
Andy Adamson0f3e66c2009-04-01 09:22:34 -04005704
5705static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5706{
5707 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5708}
Ricardo Labiaga180197532009-12-05 16:08:40 -05005709
Trond Myklebust66245532012-05-25 17:18:09 -04005710static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5711{
5712 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5713}
5714
Ricardo Labiaga180197532009-12-05 16:08:40 -05005715static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5716{
5717 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5718}
Benny Halevy99fe60d2009-04-01 09:22:29 -04005719#endif /* CONFIG_NFS_V4_1 */
5720
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005721static int decode_sequence(struct xdr_stream *xdr,
5722 struct nfs4_sequence_res *res,
5723 struct rpc_rqst *rqstp)
5724{
5725#if defined(CONFIG_NFS_V4_1)
Trond Myklebuste3725ec2012-11-16 12:25:01 -05005726 struct nfs4_session *session;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005727 struct nfs4_sessionid id;
5728 u32 dummy;
5729 int status;
5730 __be32 *p;
5731
Trond Myklebuste3725ec2012-11-16 12:25:01 -05005732 if (res->sr_slot == NULL)
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005733 return 0;
Chuck Lever3bd23842013-08-09 12:49:19 -04005734 if (!res->sr_slot->table->session)
5735 return 0;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005736
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005737 status = decode_op_hdr(xdr, OP_SEQUENCE);
Benny Halevye78291e2009-08-14 17:20:00 +03005738 if (!status)
5739 status = decode_sessionid(xdr, &id);
5740 if (unlikely(status))
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005741 goto out_err;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005742
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005743 /*
5744 * If the server returns different values for sessionID, slotID or
5745 * sequence number, the server is looney tunes.
5746 */
Trond Myklebustfdcb4572010-02-08 09:32:40 -05005747 status = -EREMOTEIO;
Trond Myklebuste3725ec2012-11-16 12:25:01 -05005748 session = res->sr_slot->table->session;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005749
Trond Myklebuste3725ec2012-11-16 12:25:01 -05005750 if (memcmp(id.data, session->sess_id.data,
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005751 NFS4_MAX_SESSIONID_LEN)) {
5752 dprintk("%s Invalid session id\n", __func__);
5753 goto out_err;
5754 }
Benny Halevye78291e2009-08-14 17:20:00 +03005755
Benny Halevyc0eae662009-08-14 17:20:14 +03005756 p = xdr_inline_decode(xdr, 20);
5757 if (unlikely(!p))
5758 goto out_overflow;
Benny Halevye78291e2009-08-14 17:20:00 +03005759
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005760 /* seqid */
Benny Halevy6f723f72009-08-14 17:19:37 +03005761 dummy = be32_to_cpup(p++);
Benny Halevydfb4f3092010-09-24 09:17:01 -04005762 if (dummy != res->sr_slot->seq_nr) {
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005763 dprintk("%s Invalid sequence number\n", __func__);
5764 goto out_err;
5765 }
5766 /* slot id */
Benny Halevy6f723f72009-08-14 17:19:37 +03005767 dummy = be32_to_cpup(p++);
Trond Myklebustdf2fabf2012-11-16 12:45:06 -05005768 if (dummy != res->sr_slot->slot_nr) {
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005769 dprintk("%s Invalid slot id\n", __func__);
5770 goto out_err;
5771 }
Trond Myklebustda0507b2012-11-20 18:10:30 -05005772 /* highest slot id */
5773 res->sr_highest_slotid = be32_to_cpup(p++);
Trond Myklebust464ee9f2012-11-20 12:49:27 -05005774 /* target highest slot id */
5775 res->sr_target_highest_slotid = be32_to_cpup(p++);
Alexandros Batsakis0629e372009-12-05 13:46:14 -05005776 /* result flags */
5777 res->sr_status_flags = be32_to_cpup(p);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005778 status = 0;
5779out_err:
5780 res->sr_status = status;
5781 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03005782out_overflow:
5783 print_overflow_msg(__func__, xdr);
5784 status = -EIO;
5785 goto out_err;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005786#else /* CONFIG_NFS_V4_1 */
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005787 return 0;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005788#endif /* CONFIG_NFS_V4_1 */
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005789}
5790
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005791#if defined(CONFIG_NFS_V4_1)
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005792static int decode_getdeviceinfo(struct xdr_stream *xdr,
Trond Myklebust4e590802015-03-09 14:01:25 -04005793 struct nfs4_getdeviceinfo_res *res)
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005794{
Trond Myklebust4e590802015-03-09 14:01:25 -04005795 struct pnfs_device *pdev = res->pdev;
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005796 __be32 *p;
5797 uint32_t len, type;
5798 int status;
5799
5800 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5801 if (status) {
5802 if (status == -ETOOSMALL) {
5803 p = xdr_inline_decode(xdr, 4);
5804 if (unlikely(!p))
5805 goto out_overflow;
5806 pdev->mincount = be32_to_cpup(p);
5807 dprintk("%s: Min count too small. mincnt = %u\n",
5808 __func__, pdev->mincount);
5809 }
5810 return status;
5811 }
5812
5813 p = xdr_inline_decode(xdr, 8);
5814 if (unlikely(!p))
5815 goto out_overflow;
5816 type = be32_to_cpup(p++);
5817 if (type != pdev->layout_type) {
5818 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5819 __func__, pdev->layout_type, type);
5820 return -EINVAL;
5821 }
5822 /*
5823 * Get the length of the opaque device_addr4. xdr_read_pages places
5824 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5825 * and places the remaining xdr data in xdr_buf->tail
5826 */
5827 pdev->mincount = be32_to_cpup(p);
Trond Myklebust13fe4ba2012-08-01 14:21:12 -04005828 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5829 goto out_overflow;
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005830
5831 /* Parse notification bitmap, verifying that it is zero. */
5832 p = xdr_inline_decode(xdr, 4);
5833 if (unlikely(!p))
5834 goto out_overflow;
5835 len = be32_to_cpup(p);
5836 if (len) {
Chuck Leveread00592010-12-14 14:58:21 +00005837 uint32_t i;
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005838
5839 p = xdr_inline_decode(xdr, 4 * len);
5840 if (unlikely(!p))
5841 goto out_overflow;
Christoph Hellwig84c9dee2014-09-10 17:37:28 -07005842
Trond Myklebust4e590802015-03-09 14:01:25 -04005843 res->notification = be32_to_cpup(p++);
Christoph Hellwig84c9dee2014-09-10 17:37:28 -07005844 for (i = 1; i < len; i++) {
5845 if (be32_to_cpup(p++)) {
5846 dprintk("%s: unsupported notification\n",
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005847 __func__);
5848 return -EIO;
5849 }
5850 }
5851 }
5852 return 0;
5853out_overflow:
5854 print_overflow_msg(__func__, xdr);
5855 return -EIO;
5856}
5857
5858static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5859 struct nfs4_layoutget_res *res)
5860{
5861 __be32 *p;
5862 int status;
5863 u32 layout_count;
Trond Myklebust64bd5772012-06-20 22:35:05 -04005864 u32 recvd;
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005865
5866 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5867 if (status)
5868 return status;
Trond Myklebustea9d23f2012-03-04 18:13:56 -05005869 p = xdr_inline_decode(xdr, 4);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005870 if (unlikely(!p))
5871 goto out_overflow;
Trond Myklebustea9d23f2012-03-04 18:13:56 -05005872 res->return_on_close = be32_to_cpup(p);
5873 decode_stateid(xdr, &res->stateid);
5874 p = xdr_inline_decode(xdr, 4);
5875 if (unlikely(!p))
5876 goto out_overflow;
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005877 layout_count = be32_to_cpup(p);
5878 if (!layout_count) {
5879 dprintk("%s: server responded with empty layout array\n",
5880 __func__);
5881 return -EINVAL;
5882 }
5883
Weston Andros Adamson35124a02011-03-24 16:48:21 -04005884 p = xdr_inline_decode(xdr, 28);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005885 if (unlikely(!p))
5886 goto out_overflow;
5887 p = xdr_decode_hyper(p, &res->range.offset);
5888 p = xdr_decode_hyper(p, &res->range.length);
5889 res->range.iomode = be32_to_cpup(p++);
5890 res->type = be32_to_cpup(p++);
Weston Andros Adamson35124a02011-03-24 16:48:21 -04005891 res->layoutp->len = be32_to_cpup(p);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005892
5893 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5894 __func__,
5895 (unsigned long)res->range.offset,
5896 (unsigned long)res->range.length,
5897 res->range.iomode,
5898 res->type,
Weston Andros Adamson35124a02011-03-24 16:48:21 -04005899 res->layoutp->len);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005900
Trond Myklebust64bd5772012-06-20 22:35:05 -04005901 recvd = xdr_read_pages(xdr, res->layoutp->len);
Weston Andros Adamson35124a02011-03-24 16:48:21 -04005902 if (res->layoutp->len > recvd) {
5903 dprintk("NFS: server cheating in layoutget reply: "
5904 "layout len %u > recvd %u\n",
5905 res->layoutp->len, recvd);
5906 return -EINVAL;
5907 }
5908
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005909 if (layout_count > 1) {
5910 /* We only handle a length one array at the moment. Any
5911 * further entries are just ignored. Note that this means
5912 * the client may see a response that is less than the
5913 * minimum it requested.
5914 */
5915 dprintk("%s: server responded with %d layouts, dropping tail\n",
5916 __func__, layout_count);
5917 }
5918
5919 return 0;
5920out_overflow:
5921 print_overflow_msg(__func__, xdr);
5922 return -EIO;
5923}
Andy Adamson863a3c62011-03-23 13:27:54 +00005924
Benny Halevycbe82602011-05-22 19:52:37 +03005925static int decode_layoutreturn(struct xdr_stream *xdr,
5926 struct nfs4_layoutreturn_res *res)
5927{
5928 __be32 *p;
5929 int status;
5930
5931 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
5932 if (status)
5933 return status;
5934 p = xdr_inline_decode(xdr, 4);
5935 if (unlikely(!p))
5936 goto out_overflow;
5937 res->lrs_present = be32_to_cpup(p);
5938 if (res->lrs_present)
5939 status = decode_stateid(xdr, &res->stateid);
5940 return status;
5941out_overflow:
5942 print_overflow_msg(__func__, xdr);
5943 return -EIO;
5944}
5945
Andy Adamson863a3c62011-03-23 13:27:54 +00005946static int decode_layoutcommit(struct xdr_stream *xdr,
5947 struct rpc_rqst *req,
5948 struct nfs4_layoutcommit_res *res)
5949{
5950 __be32 *p;
5951 __u32 sizechanged;
5952 int status;
5953
5954 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
Andy Adamsondb29c082011-07-30 20:52:38 -04005955 res->status = status;
Andy Adamson863a3c62011-03-23 13:27:54 +00005956 if (status)
5957 return status;
5958
5959 p = xdr_inline_decode(xdr, 4);
5960 if (unlikely(!p))
5961 goto out_overflow;
5962 sizechanged = be32_to_cpup(p);
5963
5964 if (sizechanged) {
5965 /* throw away new size */
5966 p = xdr_inline_decode(xdr, 8);
5967 if (unlikely(!p))
5968 goto out_overflow;
5969 }
5970 return 0;
5971out_overflow:
5972 print_overflow_msg(__func__, xdr);
5973 return -EIO;
5974}
Bryan Schumaker7d974792011-06-02 14:59:08 -04005975
5976static int decode_test_stateid(struct xdr_stream *xdr,
5977 struct nfs41_test_stateid_res *res)
5978{
5979 __be32 *p;
5980 int status;
5981 int num_res;
5982
5983 status = decode_op_hdr(xdr, OP_TEST_STATEID);
5984 if (status)
5985 return status;
5986
5987 p = xdr_inline_decode(xdr, 4);
5988 if (unlikely(!p))
5989 goto out_overflow;
5990 num_res = be32_to_cpup(p++);
5991 if (num_res != 1)
5992 goto out;
5993
5994 p = xdr_inline_decode(xdr, 4);
5995 if (unlikely(!p))
5996 goto out_overflow;
5997 res->status = be32_to_cpup(p++);
Bryan Schumaker1cab0652012-01-31 10:39:29 -05005998
5999 return status;
Bryan Schumaker7d974792011-06-02 14:59:08 -04006000out_overflow:
6001 print_overflow_msg(__func__, xdr);
6002out:
6003 return -EIO;
6004}
Bryan Schumaker9aeda352011-06-02 14:59:09 -04006005
6006static int decode_free_stateid(struct xdr_stream *xdr,
6007 struct nfs41_free_stateid_res *res)
6008{
Andy Adamson9f79fb42013-09-10 12:56:29 -04006009 res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
Bryan Schumaker9aeda352011-06-02 14:59:09 -04006010 return res->status;
Bryan Schumaker9aeda352011-06-02 14:59:09 -04006011}
Andy Adamsonb1f69b72010-10-20 00:18:03 -04006012#endif /* CONFIG_NFS_V4_1 */
6013
Linus Torvalds1da177e2005-04-16 15:20:36 -07006014/*
Benny Halevy49c25592008-12-23 16:06:16 -05006015 * END OF "GENERIC" DECODE ROUTINES.
6016 */
6017
6018/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07006019 * Decode OPEN_DOWNGRADE response
6020 */
Chuck Leverbf269552010-12-14 14:59:29 +00006021static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
6022 struct xdr_stream *xdr,
6023 struct nfs_closeres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006024{
Andy Adamson05d564f2008-12-23 16:06:15 -05006025 struct compound_hdr hdr;
6026 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006027
Chuck Leverbf269552010-12-14 14:59:29 +00006028 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006029 if (status)
6030 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006031 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006032 if (status)
6033 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006034 status = decode_putfh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006035 if (status)
6036 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006037 status = decode_open_downgrade(xdr, res);
Trond Myklebust516a6af2005-10-27 22:12:41 -04006038 if (status != 0)
6039 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05006040 decode_getfattr(xdr, res->fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006041out:
Andy Adamson05d564f2008-12-23 16:06:15 -05006042 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006043}
6044
6045/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07006046 * Decode ACCESS response
6047 */
Chuck Leverbf269552010-12-14 14:59:29 +00006048static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6049 struct nfs4_accessres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006050{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006051 struct compound_hdr hdr;
6052 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05006053
Chuck Leverbf269552010-12-14 14:59:29 +00006054 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006055 if (status)
6056 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006057 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006058 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006059 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006060 status = decode_putfh(xdr);
Trond Myklebust76b32992007-08-10 17:45:11 -04006061 if (status != 0)
6062 goto out;
Weston Andros Adamson6168f622012-09-10 14:00:46 -04006063 status = decode_access(xdr, &res->supported, &res->access);
Trond Myklebust76b32992007-08-10 17:45:11 -04006064 if (status != 0)
6065 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05006066 decode_getfattr(xdr, res->fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006067out:
6068 return status;
6069}
6070
6071/*
6072 * Decode LOOKUP response
6073 */
Chuck Leverbf269552010-12-14 14:59:29 +00006074static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6075 struct nfs4_lookup_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006076{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006077 struct compound_hdr hdr;
6078 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05006079
Chuck Leverbf269552010-12-14 14:59:29 +00006080 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006081 if (status)
6082 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006083 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006084 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006085 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006086 status = decode_putfh(xdr);
6087 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006088 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006089 status = decode_lookup(xdr);
6090 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006091 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006092 status = decode_getfh(xdr, res->fh);
6093 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006094 goto out;
David Quigleyaa9c2662013-05-22 12:50:44 -04006095 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006096out:
6097 return status;
6098}
6099
6100/*
6101 * Decode LOOKUP_ROOT response
6102 */
Chuck Leverbf269552010-12-14 14:59:29 +00006103static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6104 struct xdr_stream *xdr,
6105 struct nfs4_lookup_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006106{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006107 struct compound_hdr hdr;
6108 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05006109
Chuck Leverbf269552010-12-14 14:59:29 +00006110 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006111 if (status)
6112 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006113 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006114 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006115 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006116 status = decode_putrootfh(xdr);
6117 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006118 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006119 status = decode_getfh(xdr, res->fh);
6120 if (status == 0)
David Quigleyaa9c2662013-05-22 12:50:44 -04006121 status = decode_getfattr_label(xdr, res->fattr,
6122 res->label, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006123out:
6124 return status;
6125}
6126
6127/*
6128 * Decode REMOVE response
6129 */
Chuck Leverbf269552010-12-14 14:59:29 +00006130static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6131 struct nfs_removeres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006132{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006133 struct compound_hdr hdr;
6134 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05006135
Chuck Leverbf269552010-12-14 14:59:29 +00006136 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006137 if (status)
6138 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006139 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006140 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006141 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006142 status = decode_putfh(xdr);
6143 if (status)
Trond Myklebust16e42952005-10-27 22:12:44 -04006144 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006145 status = decode_remove(xdr, &res->cinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006146out:
6147 return status;
6148}
6149
6150/*
6151 * Decode RENAME response
6152 */
Chuck Leverbf269552010-12-14 14:59:29 +00006153static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6154 struct nfs_renameres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006155{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006156 struct compound_hdr hdr;
6157 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05006158
Chuck Leverbf269552010-12-14 14:59:29 +00006159 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006160 if (status)
6161 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006162 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006163 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006164 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006165 status = decode_putfh(xdr);
6166 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006167 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006168 status = decode_savefh(xdr);
6169 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006170 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006171 status = decode_putfh(xdr);
6172 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006173 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006174 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006175out:
6176 return status;
6177}
6178
6179/*
6180 * Decode LINK response
6181 */
Chuck Leverbf269552010-12-14 14:59:29 +00006182static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6183 struct nfs4_link_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006184{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006185 struct compound_hdr hdr;
6186 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05006187
Chuck Leverbf269552010-12-14 14:59:29 +00006188 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006189 if (status)
6190 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006191 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006192 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006193 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006194 status = decode_putfh(xdr);
6195 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006196 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006197 status = decode_savefh(xdr);
6198 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006199 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006200 status = decode_putfh(xdr);
6201 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006202 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006203 status = decode_link(xdr, &res->cinfo);
6204 if (status)
Trond Myklebust91ba2ee2005-10-27 22:12:42 -04006205 goto out;
6206 /*
6207 * Note order: OP_LINK leaves the directory as the current
6208 * filehandle.
6209 */
Chuck Leverbf269552010-12-14 14:59:29 +00006210 status = decode_restorefh(xdr);
6211 if (status)
Trond Myklebust91ba2ee2005-10-27 22:12:42 -04006212 goto out;
David Quigleyaa9c2662013-05-22 12:50:44 -04006213 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006214out:
6215 return status;
6216}
6217
6218/*
6219 * Decode CREATE response
6220 */
Chuck Leverbf269552010-12-14 14:59:29 +00006221static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6222 struct nfs4_create_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006223{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006224 struct compound_hdr hdr;
6225 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05006226
Chuck Leverbf269552010-12-14 14:59:29 +00006227 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006228 if (status)
6229 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006230 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006231 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006232 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006233 status = decode_putfh(xdr);
6234 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006235 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006236 status = decode_create(xdr, &res->dir_cinfo);
6237 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006238 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006239 status = decode_getfh(xdr, res->fh);
6240 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006241 goto out;
David Quigleyaa9c2662013-05-22 12:50:44 -04006242 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006243out:
6244 return status;
6245}
6246
6247/*
6248 * Decode SYMLINK response
6249 */
Chuck Leverbf269552010-12-14 14:59:29 +00006250static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6251 struct nfs4_create_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006252{
Chuck Leverbf269552010-12-14 14:59:29 +00006253 return nfs4_xdr_dec_create(rqstp, xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006254}
6255
6256/*
6257 * Decode GETATTR response
6258 */
Chuck Leverbf269552010-12-14 14:59:29 +00006259static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6260 struct nfs4_getattr_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006261{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006262 struct compound_hdr hdr;
6263 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05006264
Chuck Leverbf269552010-12-14 14:59:29 +00006265 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006266 if (status)
6267 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006268 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006269 if (status)
6270 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006271 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006272 if (status)
6273 goto out;
David Quigleyaa9c2662013-05-22 12:50:44 -04006274 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006275out:
6276 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006277}
6278
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006279/*
6280 * Encode an SETACL request
6281 */
Chuck Lever9f06c712010-12-14 14:59:18 +00006282static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6283 struct nfs_setaclargs *args)
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006284{
Andy Adamson05d564f2008-12-23 16:06:15 -05006285 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04006286 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Andy Adamson05d564f2008-12-23 16:06:15 -05006287 };
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006288
Chuck Lever9f06c712010-12-14 14:59:18 +00006289 encode_compound_hdr(xdr, req, &hdr);
6290 encode_sequence(xdr, &args->seq_args, &hdr);
6291 encode_putfh(xdr, args->fh, &hdr);
6292 encode_setacl(xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05006293 encode_nops(&hdr);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006294}
Andy Adamson05d564f2008-12-23 16:06:15 -05006295
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006296/*
6297 * Decode SETACL response
6298 */
6299static int
Chuck Leverbf269552010-12-14 14:59:29 +00006300nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
Benny Halevy73c403a2009-04-01 09:22:01 -04006301 struct nfs_setaclres *res)
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006302{
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006303 struct compound_hdr hdr;
6304 int status;
6305
Chuck Leverbf269552010-12-14 14:59:29 +00006306 status = decode_compound_hdr(xdr, &hdr);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006307 if (status)
6308 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006309 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006310 if (status)
6311 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006312 status = decode_putfh(xdr);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006313 if (status)
6314 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006315 status = decode_setattr(xdr);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006316out:
6317 return status;
6318}
Linus Torvalds1da177e2005-04-16 15:20:36 -07006319
6320/*
J. Bruce Fields029d1052005-06-22 17:16:22 +00006321 * Decode GETACL response
6322 */
6323static int
Chuck Leverbf269552010-12-14 14:59:29 +00006324nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
Benny Halevy663c79b2009-04-01 09:21:59 -04006325 struct nfs_getaclres *res)
J. Bruce Fields029d1052005-06-22 17:16:22 +00006326{
J. Bruce Fields029d1052005-06-22 17:16:22 +00006327 struct compound_hdr hdr;
6328 int status;
6329
Trond Myklebust331818f2012-02-03 18:30:53 -05006330 if (res->acl_scratch != NULL) {
6331 void *p = page_address(res->acl_scratch);
6332 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
6333 }
Chuck Leverbf269552010-12-14 14:59:29 +00006334 status = decode_compound_hdr(xdr, &hdr);
J. Bruce Fields029d1052005-06-22 17:16:22 +00006335 if (status)
6336 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006337 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006338 if (status)
6339 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006340 status = decode_putfh(xdr);
J. Bruce Fields029d1052005-06-22 17:16:22 +00006341 if (status)
6342 goto out;
Andy Adamsonbf118a32011-12-07 11:55:27 -05006343 status = decode_getacl(xdr, rqstp, res);
J. Bruce Fields029d1052005-06-22 17:16:22 +00006344
6345out:
6346 return status;
6347}
6348
6349/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07006350 * Decode CLOSE response
6351 */
Chuck Leverbf269552010-12-14 14:59:29 +00006352static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6353 struct nfs_closeres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006354{
Andy Adamson05d564f2008-12-23 16:06:15 -05006355 struct compound_hdr hdr;
6356 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006357
Chuck Leverbf269552010-12-14 14:59:29 +00006358 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006359 if (status)
6360 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006361 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006362 if (status)
6363 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006364 status = decode_putfh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006365 if (status)
6366 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006367 status = decode_close(xdr, res);
Trond Myklebust516a6af2005-10-27 22:12:41 -04006368 if (status != 0)
6369 goto out;
6370 /*
6371 * Note: Server may do delete on close for this file
6372 * in which case the getattr call will fail with
6373 * an ESTALE error. Shouldn't be a problem,
6374 * though, since fattr->valid will remain unset.
6375 */
Trond Myklebust6926afd2012-01-07 13:22:46 -05006376 decode_getfattr(xdr, res->fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006377out:
Andy Adamson05d564f2008-12-23 16:06:15 -05006378 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006379}
6380
6381/*
6382 * Decode OPEN response
6383 */
Chuck Leverbf269552010-12-14 14:59:29 +00006384static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6385 struct nfs_openres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006386{
Andy Adamson05d564f2008-12-23 16:06:15 -05006387 struct compound_hdr hdr;
6388 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006389
Chuck Leverbf269552010-12-14 14:59:29 +00006390 status = decode_compound_hdr(xdr, &hdr);
Trond Myklebust56ae19f2005-10-27 22:12:40 -04006391 if (status)
6392 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006393 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006394 if (status)
6395 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006396 status = decode_putfh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006397 if (status)
6398 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006399 status = decode_open(xdr, res);
Andy Adamson05d564f2008-12-23 16:06:15 -05006400 if (status)
6401 goto out;
Weston Andros Adamson01913b42012-09-06 15:54:27 -04006402 status = decode_getfh(xdr, &res->fh);
6403 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006404 goto out;
Weston Andros Adamsonae2bb032012-10-02 14:49:52 -07006405 if (res->access_request)
6406 decode_access(xdr, &res->access_supported, &res->access_result);
David Quigleyaa9c2662013-05-22 12:50:44 -04006407 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006408out:
Andy Adamson05d564f2008-12-23 16:06:15 -05006409 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006410}
6411
6412/*
6413 * Decode OPEN_CONFIRM response
6414 */
Chuck Leverbf269552010-12-14 14:59:29 +00006415static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6416 struct xdr_stream *xdr,
6417 struct nfs_open_confirmres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006418{
Andy Adamson05d564f2008-12-23 16:06:15 -05006419 struct compound_hdr hdr;
6420 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006421
Chuck Leverbf269552010-12-14 14:59:29 +00006422 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006423 if (status)
6424 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006425 status = decode_putfh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006426 if (status)
6427 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006428 status = decode_open_confirm(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006429out:
Andy Adamson05d564f2008-12-23 16:06:15 -05006430 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006431}
6432
6433/*
6434 * Decode OPEN response
6435 */
Chuck Leverbf269552010-12-14 14:59:29 +00006436static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6437 struct xdr_stream *xdr,
6438 struct nfs_openres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006439{
Andy Adamson05d564f2008-12-23 16:06:15 -05006440 struct compound_hdr hdr;
6441 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006442
Chuck Leverbf269552010-12-14 14:59:29 +00006443 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006444 if (status)
6445 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006446 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006447 if (status)
6448 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006449 status = decode_putfh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006450 if (status)
6451 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006452 status = decode_open(xdr, res);
Andy Adamson05d564f2008-12-23 16:06:15 -05006453 if (status)
6454 goto out;
Weston Andros Adamsonae2bb032012-10-02 14:49:52 -07006455 if (res->access_request)
6456 decode_access(xdr, &res->access_supported, &res->access_result);
Trond Myklebust6926afd2012-01-07 13:22:46 -05006457 decode_getfattr(xdr, res->f_attr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006458out:
Andy Adamson05d564f2008-12-23 16:06:15 -05006459 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006460}
6461
6462/*
6463 * Decode SETATTR response
6464 */
Chuck Leverbf269552010-12-14 14:59:29 +00006465static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6466 struct xdr_stream *xdr,
6467 struct nfs_setattrres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006468{
Andy Adamson05d564f2008-12-23 16:06:15 -05006469 struct compound_hdr hdr;
6470 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006471
Chuck Leverbf269552010-12-14 14:59:29 +00006472 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006473 if (status)
6474 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006475 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006476 if (status)
6477 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006478 status = decode_putfh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006479 if (status)
6480 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006481 status = decode_setattr(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006482 if (status)
6483 goto out;
David Quigleyaa9c2662013-05-22 12:50:44 -04006484 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006485out:
Andy Adamson05d564f2008-12-23 16:06:15 -05006486 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006487}
6488
6489/*
6490 * Decode LOCK response
6491 */
Chuck Leverbf269552010-12-14 14:59:29 +00006492static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6493 struct nfs_lock_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006494{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006495 struct compound_hdr hdr;
6496 int status;
6497
Chuck Leverbf269552010-12-14 14:59:29 +00006498 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006499 if (status)
6500 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006501 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006502 if (status)
6503 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006504 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006505 if (status)
6506 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006507 status = decode_lock(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006508out:
6509 return status;
6510}
6511
6512/*
6513 * Decode LOCKT response
6514 */
Chuck Leverbf269552010-12-14 14:59:29 +00006515static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6516 struct nfs_lockt_res *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);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006522 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)
6526 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006527 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006528 if (status)
6529 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006530 status = decode_lockt(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006531out:
6532 return status;
6533}
6534
6535/*
6536 * Decode LOCKU response
6537 */
Chuck Leverbf269552010-12-14 14:59:29 +00006538static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6539 struct nfs_locku_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006540{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006541 struct compound_hdr hdr;
6542 int status;
6543
Chuck Leverbf269552010-12-14 14:59:29 +00006544 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006545 if (status)
6546 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006547 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006548 if (status)
6549 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006550 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006551 if (status)
6552 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006553 status = decode_locku(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006554out:
6555 return status;
6556}
6557
Chuck Leverbf269552010-12-14 14:59:29 +00006558static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6559 struct xdr_stream *xdr, void *dummy)
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04006560{
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04006561 struct compound_hdr hdr;
6562 int status;
6563
Chuck Leverbf269552010-12-14 14:59:29 +00006564 status = decode_compound_hdr(xdr, &hdr);
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04006565 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006566 status = decode_release_lockowner(xdr);
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04006567 return status;
6568}
6569
Linus Torvalds1da177e2005-04-16 15:20:36 -07006570/*
6571 * Decode READLINK response
6572 */
Chuck Leverbf269552010-12-14 14:59:29 +00006573static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6574 struct xdr_stream *xdr,
Benny Halevyf50c7002009-04-01 09:21:55 -04006575 struct nfs4_readlink_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006576{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006577 struct compound_hdr hdr;
6578 int status;
6579
Chuck Leverbf269552010-12-14 14:59:29 +00006580 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006581 if (status)
6582 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006583 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006584 if (status)
6585 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006586 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006587 if (status)
6588 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006589 status = decode_readlink(xdr, rqstp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006590out:
6591 return status;
6592}
6593
6594/*
6595 * Decode READDIR response
6596 */
Chuck Leverbf269552010-12-14 14:59:29 +00006597static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6598 struct nfs4_readdir_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006599{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006600 struct compound_hdr hdr;
6601 int status;
6602
Chuck Leverbf269552010-12-14 14:59:29 +00006603 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006604 if (status)
6605 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006606 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006607 if (status)
6608 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006609 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006610 if (status)
6611 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006612 status = decode_readdir(xdr, rqstp, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006613out:
6614 return status;
6615}
6616
6617/*
6618 * Decode Read response
6619 */
Chuck Leverbf269552010-12-14 14:59:29 +00006620static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
Anna Schumaker9137bdf2014-05-06 09:12:25 -04006621 struct nfs_pgio_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006622{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006623 struct compound_hdr hdr;
6624 int status;
6625
Chuck Leverbf269552010-12-14 14:59:29 +00006626 status = decode_compound_hdr(xdr, &hdr);
Peng Taoaabff4d2014-08-27 10:47:14 +08006627 res->op_status = hdr.status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006628 if (status)
6629 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006630 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006631 if (status)
6632 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006633 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006634 if (status)
6635 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006636 status = decode_read(xdr, rqstp, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006637 if (!status)
6638 status = res->count;
6639out:
6640 return status;
6641}
6642
6643/*
6644 * Decode WRITE response
6645 */
Chuck Leverbf269552010-12-14 14:59:29 +00006646static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
Anna Schumaker9137bdf2014-05-06 09:12:25 -04006647 struct nfs_pgio_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006648{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006649 struct compound_hdr hdr;
6650 int status;
6651
Chuck Leverbf269552010-12-14 14:59:29 +00006652 status = decode_compound_hdr(xdr, &hdr);
Peng Taoaabff4d2014-08-27 10:47:14 +08006653 res->op_status = hdr.status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006654 if (status)
6655 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006656 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006657 if (status)
6658 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006659 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006660 if (status)
6661 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006662 status = decode_write(xdr, res);
Trond Myklebust4f9838c2005-10-27 22:12:44 -04006663 if (status)
6664 goto out;
Fred Isaman7ffd1062011-03-03 15:13:46 +00006665 if (res->fattr)
Trond Myklebust6926afd2012-01-07 13:22:46 -05006666 decode_getfattr(xdr, res->fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006667 if (!status)
6668 status = res->count;
6669out:
6670 return status;
6671}
6672
6673/*
6674 * Decode COMMIT response
6675 */
Chuck Leverbf269552010-12-14 14:59:29 +00006676static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
Fred Isaman0b7c0152012-04-20 14:47:39 -04006677 struct nfs_commitres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006678{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006679 struct compound_hdr hdr;
6680 int status;
6681
Chuck Leverbf269552010-12-14 14:59:29 +00006682 status = decode_compound_hdr(xdr, &hdr);
Peng Taoaabff4d2014-08-27 10:47:14 +08006683 res->op_status = hdr.status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006684 if (status)
6685 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006686 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006687 if (status)
6688 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006689 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006690 if (status)
6691 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006692 status = decode_commit(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006693out:
6694 return status;
6695}
6696
6697/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006698 * Decode FSINFO response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006699 */
Chuck Leverbf269552010-12-14 14:59:29 +00006700static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
Benny Halevy3dda5e42009-04-01 09:21:57 -04006701 struct nfs4_fsinfo_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006702{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006703 struct compound_hdr hdr;
6704 int status;
6705
Chuck Leverbf269552010-12-14 14:59:29 +00006706 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006707 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006708 status = decode_sequence(xdr, &res->seq_res, req);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006709 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006710 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006711 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006712 status = decode_fsinfo(xdr, res->fsinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006713 return status;
6714}
6715
6716/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006717 * Decode PATHCONF response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006718 */
Chuck Leverbf269552010-12-14 14:59:29 +00006719static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
Benny Halevyd45b2982009-04-01 09:21:58 -04006720 struct nfs4_pathconf_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006721{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006722 struct compound_hdr hdr;
6723 int status;
6724
Chuck Leverbf269552010-12-14 14:59:29 +00006725 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006726 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006727 status = decode_sequence(xdr, &res->seq_res, req);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006728 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006729 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006730 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006731 status = decode_pathconf(xdr, res->pathconf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006732 return status;
6733}
6734
6735/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006736 * Decode STATFS response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006737 */
Chuck Leverbf269552010-12-14 14:59:29 +00006738static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
Benny Halevy24ad1482009-04-01 09:21:56 -04006739 struct nfs4_statfs_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006740{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006741 struct compound_hdr hdr;
6742 int status;
6743
Chuck Leverbf269552010-12-14 14:59:29 +00006744 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006745 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006746 status = decode_sequence(xdr, &res->seq_res, req);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006747 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006748 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006749 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006750 status = decode_statfs(xdr, res->fsstat);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006751 return status;
6752}
6753
6754/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006755 * Decode GETATTR_BITMAP response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006756 */
Chuck Leverbf269552010-12-14 14:59:29 +00006757static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6758 struct xdr_stream *xdr,
6759 struct nfs4_server_caps_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006760{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006761 struct compound_hdr hdr;
6762 int status;
6763
Chuck Leverbf269552010-12-14 14:59:29 +00006764 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006765 if (status)
6766 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006767 status = decode_sequence(xdr, &res->seq_res, req);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006768 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006769 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006770 status = decode_putfh(xdr);
6771 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006772 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006773 status = decode_server_caps(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006774out:
6775 return status;
6776}
6777
6778/*
6779 * Decode RENEW response
6780 */
Chuck Leverbf269552010-12-14 14:59:29 +00006781static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6782 void *__unused)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006783{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006784 struct compound_hdr hdr;
6785 int status;
6786
Chuck Leverbf269552010-12-14 14:59:29 +00006787 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006788 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006789 status = decode_renew(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006790 return status;
6791}
6792
6793/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006794 * Decode SETCLIENTID response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006795 */
Chuck Leverbf269552010-12-14 14:59:29 +00006796static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6797 struct xdr_stream *xdr,
6798 struct nfs4_setclientid_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006799{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006800 struct compound_hdr hdr;
6801 int status;
6802
Chuck Leverbf269552010-12-14 14:59:29 +00006803 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006804 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006805 status = decode_setclientid(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006806 return status;
6807}
6808
6809/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006810 * Decode SETCLIENTID_CONFIRM response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006811 */
Chuck Leverbf269552010-12-14 14:59:29 +00006812static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
Chuck Lever83ca7f52013-03-16 15:55:53 -04006813 struct xdr_stream *xdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006814{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006815 struct compound_hdr hdr;
6816 int status;
6817
Chuck Leverbf269552010-12-14 14:59:29 +00006818 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006819 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006820 status = decode_setclientid_confirm(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006821 return status;
6822}
6823
6824/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006825 * Decode DELEGRETURN response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006826 */
Chuck Leverbf269552010-12-14 14:59:29 +00006827static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6828 struct xdr_stream *xdr,
6829 struct nfs4_delegreturnres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006830{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006831 struct compound_hdr hdr;
6832 int status;
6833
Chuck Leverbf269552010-12-14 14:59:29 +00006834 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006835 if (status)
6836 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006837 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006838 if (status)
Trond Myklebustfa178f22006-01-03 09:55:38 +01006839 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006840 status = decode_putfh(xdr);
Trond Myklebustfa178f22006-01-03 09:55:38 +01006841 if (status != 0)
6842 goto out;
Trond Myklebuste144cbc2012-04-28 16:05:03 -04006843 status = decode_getfattr(xdr, res->fattr, res->server);
Jeff Layton556ae3b2010-03-21 12:10:36 -04006844 if (status != 0)
6845 goto out;
Trond Myklebuste144cbc2012-04-28 16:05:03 -04006846 status = decode_delegreturn(xdr);
Trond Myklebustfa178f22006-01-03 09:55:38 +01006847out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07006848 return status;
6849}
6850
Trond Myklebust683b57b2006-06-09 09:34:22 -04006851/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006852 * Decode FS_LOCATIONS response
Trond Myklebust683b57b2006-06-09 09:34:22 -04006853 */
Chuck Leverbf269552010-12-14 14:59:29 +00006854static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6855 struct xdr_stream *xdr,
Benny Halevy22958462009-04-01 09:22:02 -04006856 struct nfs4_fs_locations_res *res)
Trond Myklebust683b57b2006-06-09 09:34:22 -04006857{
Trond Myklebust683b57b2006-06-09 09:34:22 -04006858 struct compound_hdr hdr;
6859 int status;
6860
Chuck Leverbf269552010-12-14 14:59:29 +00006861 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006862 if (status)
6863 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006864 status = decode_sequence(xdr, &res->seq_res, req);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006865 if (status)
Trond Myklebust683b57b2006-06-09 09:34:22 -04006866 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006867 status = decode_putfh(xdr);
6868 if (status)
Trond Myklebust683b57b2006-06-09 09:34:22 -04006869 goto out;
Chuck Leverb03d7352013-10-17 14:12:50 -04006870 if (res->migration) {
6871 xdr_enter_page(xdr, PAGE_SIZE);
6872 status = decode_getfattr_generic(xdr,
6873 &res->fs_locations->fattr,
Trond Myklebust8b7e3f42012-01-30 15:43:56 -05006874 NULL, res->fs_locations,
David Quigleyaa9c2662013-05-22 12:50:44 -04006875 NULL, res->fs_locations->server);
Chuck Leverb03d7352013-10-17 14:12:50 -04006876 if (status)
6877 goto out;
6878 if (res->renew)
6879 status = decode_renew(xdr);
6880 } else {
6881 status = decode_lookup(xdr);
6882 if (status)
6883 goto out;
6884 xdr_enter_page(xdr, PAGE_SIZE);
6885 status = decode_getfattr_generic(xdr,
6886 &res->fs_locations->fattr,
6887 NULL, res->fs_locations,
6888 NULL, res->fs_locations->server);
6889 }
Trond Myklebust683b57b2006-06-09 09:34:22 -04006890out:
6891 return status;
6892}
6893
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00006894/*
6895 * Decode SECINFO response
6896 */
6897static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6898 struct xdr_stream *xdr,
6899 struct nfs4_secinfo_res *res)
6900{
6901 struct compound_hdr hdr;
6902 int status;
6903
6904 status = decode_compound_hdr(xdr, &hdr);
6905 if (status)
6906 goto out;
6907 status = decode_sequence(xdr, &res->seq_res, rqstp);
6908 if (status)
6909 goto out;
6910 status = decode_putfh(xdr);
6911 if (status)
6912 goto out;
6913 status = decode_secinfo(xdr, res);
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00006914out:
6915 return status;
6916}
6917
Chuck Lever44c99932013-10-17 14:13:30 -04006918/*
6919 * Decode FSID_PRESENT response
6920 */
6921static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp,
6922 struct xdr_stream *xdr,
6923 struct nfs4_fsid_present_res *res)
6924{
6925 struct compound_hdr hdr;
6926 int status;
6927
6928 status = decode_compound_hdr(xdr, &hdr);
6929 if (status)
6930 goto out;
6931 status = decode_sequence(xdr, &res->seq_res, rqstp);
6932 if (status)
6933 goto out;
6934 status = decode_putfh(xdr);
6935 if (status)
6936 goto out;
6937 status = decode_getfh(xdr, res->fh);
6938 if (status)
6939 goto out;
6940 if (res->renew)
6941 status = decode_renew(xdr);
6942out:
6943 return status;
6944}
6945
Benny Halevy99fe60d2009-04-01 09:22:29 -04006946#if defined(CONFIG_NFS_V4_1)
6947/*
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04006948 * Decode BIND_CONN_TO_SESSION response
6949 */
6950static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
6951 struct xdr_stream *xdr,
6952 void *res)
6953{
6954 struct compound_hdr hdr;
6955 int status;
6956
6957 status = decode_compound_hdr(xdr, &hdr);
6958 if (!status)
6959 status = decode_bind_conn_to_session(xdr, res);
6960 return status;
6961}
6962
6963/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006964 * Decode EXCHANGE_ID response
Benny Halevy99fe60d2009-04-01 09:22:29 -04006965 */
Chuck Leverbf269552010-12-14 14:59:29 +00006966static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
6967 struct xdr_stream *xdr,
Benny Halevy99fe60d2009-04-01 09:22:29 -04006968 void *res)
6969{
Benny Halevy99fe60d2009-04-01 09:22:29 -04006970 struct compound_hdr hdr;
6971 int status;
6972
Chuck Leverbf269552010-12-14 14:59:29 +00006973 status = decode_compound_hdr(xdr, &hdr);
Benny Halevy99fe60d2009-04-01 09:22:29 -04006974 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006975 status = decode_exchange_id(xdr, res);
Benny Halevy99fe60d2009-04-01 09:22:29 -04006976 return status;
6977}
Andy Adamson2050f0c2009-04-01 09:22:30 -04006978
6979/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006980 * Decode CREATE_SESSION response
Andy Adamsonfc931582009-04-01 09:22:31 -04006981 */
Chuck Leverbf269552010-12-14 14:59:29 +00006982static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
6983 struct xdr_stream *xdr,
Andy Adamsonfc931582009-04-01 09:22:31 -04006984 struct nfs41_create_session_res *res)
6985{
Andy Adamsonfc931582009-04-01 09:22:31 -04006986 struct compound_hdr hdr;
6987 int status;
6988
Chuck Leverbf269552010-12-14 14:59:29 +00006989 status = decode_compound_hdr(xdr, &hdr);
Andy Adamsonfc931582009-04-01 09:22:31 -04006990 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006991 status = decode_create_session(xdr, res);
Andy Adamsonfc931582009-04-01 09:22:31 -04006992 return status;
6993}
6994
6995/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006996 * Decode DESTROY_SESSION response
Andy Adamson0f3e66c2009-04-01 09:22:34 -04006997 */
Chuck Leverbf269552010-12-14 14:59:29 +00006998static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
6999 struct xdr_stream *xdr,
7000 void *res)
Andy Adamson0f3e66c2009-04-01 09:22:34 -04007001{
Andy Adamson0f3e66c2009-04-01 09:22:34 -04007002 struct compound_hdr hdr;
7003 int status;
7004
Chuck Leverbf269552010-12-14 14:59:29 +00007005 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson0f3e66c2009-04-01 09:22:34 -04007006 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00007007 status = decode_destroy_session(xdr, res);
Andy Adamson0f3e66c2009-04-01 09:22:34 -04007008 return status;
7009}
7010
7011/*
Trond Myklebust66245532012-05-25 17:18:09 -04007012 * Decode DESTROY_CLIENTID response
7013 */
7014static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
7015 struct xdr_stream *xdr,
7016 void *res)
7017{
7018 struct compound_hdr hdr;
7019 int status;
7020
7021 status = decode_compound_hdr(xdr, &hdr);
7022 if (!status)
7023 status = decode_destroy_clientid(xdr, res);
7024 return status;
7025}
7026
7027/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05007028 * Decode SEQUENCE response
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007029 */
Chuck Leverbf269552010-12-14 14:59:29 +00007030static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
7031 struct xdr_stream *xdr,
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007032 struct nfs4_sequence_res *res)
7033{
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007034 struct compound_hdr hdr;
7035 int status;
7036
Chuck Leverbf269552010-12-14 14:59:29 +00007037 status = decode_compound_hdr(xdr, &hdr);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007038 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00007039 status = decode_sequence(xdr, res, rqstp);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007040 return status;
7041}
7042
7043/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05007044 * Decode GET_LEASE_TIME response
Andy Adamson2050f0c2009-04-01 09:22:30 -04007045 */
Chuck Leverbf269552010-12-14 14:59:29 +00007046static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
7047 struct xdr_stream *xdr,
Andy Adamson2050f0c2009-04-01 09:22:30 -04007048 struct nfs4_get_lease_time_res *res)
7049{
Andy Adamson2050f0c2009-04-01 09:22:30 -04007050 struct compound_hdr hdr;
7051 int status;
7052
Chuck Leverbf269552010-12-14 14:59:29 +00007053 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson2050f0c2009-04-01 09:22:30 -04007054 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00007055 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
Andy Adamson2050f0c2009-04-01 09:22:30 -04007056 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00007057 status = decode_putrootfh(xdr);
Andy Adamson2050f0c2009-04-01 09:22:30 -04007058 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00007059 status = decode_fsinfo(xdr, res->lr_fsinfo);
Andy Adamson2050f0c2009-04-01 09:22:30 -04007060 return status;
7061}
Ricardo Labiaga180197532009-12-05 16:08:40 -05007062
7063/*
7064 * Decode RECLAIM_COMPLETE response
7065 */
Chuck Leverbf269552010-12-14 14:59:29 +00007066static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
7067 struct xdr_stream *xdr,
Ricardo Labiaga180197532009-12-05 16:08:40 -05007068 struct nfs41_reclaim_complete_res *res)
7069{
Ricardo Labiaga180197532009-12-05 16:08:40 -05007070 struct compound_hdr hdr;
7071 int status;
7072
Chuck Leverbf269552010-12-14 14:59:29 +00007073 status = decode_compound_hdr(xdr, &hdr);
Ricardo Labiaga180197532009-12-05 16:08:40 -05007074 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00007075 status = decode_sequence(xdr, &res->seq_res, rqstp);
Ricardo Labiaga180197532009-12-05 16:08:40 -05007076 if (!status)
Himangi Saraogi8ee2b782014-06-27 00:09:09 +05307077 status = decode_reclaim_complete(xdr, NULL);
Ricardo Labiaga180197532009-12-05 16:08:40 -05007078 return status;
7079}
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007080
7081/*
7082 * Decode GETDEVINFO response
7083 */
Chuck Leverbf269552010-12-14 14:59:29 +00007084static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
7085 struct xdr_stream *xdr,
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007086 struct nfs4_getdeviceinfo_res *res)
7087{
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007088 struct compound_hdr hdr;
7089 int status;
7090
Chuck Leverbf269552010-12-14 14:59:29 +00007091 status = decode_compound_hdr(xdr, &hdr);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007092 if (status != 0)
7093 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00007094 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007095 if (status != 0)
7096 goto out;
Trond Myklebust4e590802015-03-09 14:01:25 -04007097 status = decode_getdeviceinfo(xdr, res);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007098out:
7099 return status;
7100}
7101
7102/*
7103 * Decode LAYOUTGET response
7104 */
Chuck Leverbf269552010-12-14 14:59:29 +00007105static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7106 struct xdr_stream *xdr,
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007107 struct nfs4_layoutget_res *res)
7108{
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007109 struct compound_hdr hdr;
7110 int status;
7111
Chuck Leverbf269552010-12-14 14:59:29 +00007112 status = decode_compound_hdr(xdr, &hdr);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007113 if (status)
7114 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00007115 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007116 if (status)
7117 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00007118 status = decode_putfh(xdr);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007119 if (status)
7120 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00007121 status = decode_layoutget(xdr, rqstp, res);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007122out:
7123 return status;
7124}
Andy Adamson863a3c62011-03-23 13:27:54 +00007125
7126/*
Benny Halevycbe82602011-05-22 19:52:37 +03007127 * Decode LAYOUTRETURN response
7128 */
7129static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7130 struct xdr_stream *xdr,
7131 struct nfs4_layoutreturn_res *res)
7132{
7133 struct compound_hdr hdr;
7134 int status;
7135
7136 status = decode_compound_hdr(xdr, &hdr);
7137 if (status)
7138 goto out;
7139 status = decode_sequence(xdr, &res->seq_res, rqstp);
7140 if (status)
7141 goto out;
7142 status = decode_putfh(xdr);
7143 if (status)
7144 goto out;
7145 status = decode_layoutreturn(xdr, res);
7146out:
7147 return status;
7148}
7149
7150/*
Andy Adamson863a3c62011-03-23 13:27:54 +00007151 * Decode LAYOUTCOMMIT response
7152 */
7153static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7154 struct xdr_stream *xdr,
7155 struct nfs4_layoutcommit_res *res)
7156{
7157 struct compound_hdr hdr;
7158 int status;
7159
7160 status = decode_compound_hdr(xdr, &hdr);
7161 if (status)
7162 goto out;
7163 status = decode_sequence(xdr, &res->seq_res, rqstp);
7164 if (status)
7165 goto out;
7166 status = decode_putfh(xdr);
7167 if (status)
7168 goto out;
7169 status = decode_layoutcommit(xdr, rqstp, res);
7170 if (status)
7171 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05007172 decode_getfattr(xdr, res->fattr, res->server);
Andy Adamson863a3c62011-03-23 13:27:54 +00007173out:
7174 return status;
7175}
Bryan Schumakerfca78d62011-06-02 14:59:07 -04007176
7177/*
7178 * Decode SECINFO_NO_NAME response
7179 */
7180static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7181 struct xdr_stream *xdr,
7182 struct nfs4_secinfo_res *res)
7183{
7184 struct compound_hdr hdr;
7185 int status;
7186
7187 status = decode_compound_hdr(xdr, &hdr);
7188 if (status)
7189 goto out;
7190 status = decode_sequence(xdr, &res->seq_res, rqstp);
7191 if (status)
7192 goto out;
7193 status = decode_putrootfh(xdr);
7194 if (status)
7195 goto out;
Bryan Schumaker31e4dda2012-04-27 13:27:38 -04007196 status = decode_secinfo_no_name(xdr, res);
Bryan Schumakerfca78d62011-06-02 14:59:07 -04007197out:
7198 return status;
7199}
Bryan Schumaker7d974792011-06-02 14:59:08 -04007200
7201/*
7202 * Decode TEST_STATEID response
7203 */
7204static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7205 struct xdr_stream *xdr,
7206 struct nfs41_test_stateid_res *res)
7207{
7208 struct compound_hdr hdr;
7209 int status;
7210
7211 status = decode_compound_hdr(xdr, &hdr);
7212 if (status)
7213 goto out;
7214 status = decode_sequence(xdr, &res->seq_res, rqstp);
7215 if (status)
7216 goto out;
7217 status = decode_test_stateid(xdr, res);
7218out:
7219 return status;
7220}
Bryan Schumaker9aeda352011-06-02 14:59:09 -04007221
7222/*
7223 * Decode FREE_STATEID response
7224 */
7225static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7226 struct xdr_stream *xdr,
7227 struct nfs41_free_stateid_res *res)
7228{
7229 struct compound_hdr hdr;
7230 int status;
7231
7232 status = decode_compound_hdr(xdr, &hdr);
7233 if (status)
7234 goto out;
7235 status = decode_sequence(xdr, &res->seq_res, rqstp);
7236 if (status)
7237 goto out;
7238 status = decode_free_stateid(xdr, res);
7239out:
7240 return status;
7241}
Benny Halevy99fe60d2009-04-01 09:22:29 -04007242#endif /* CONFIG_NFS_V4_1 */
7243
Chuck Lever573c4e12010-12-14 14:58:11 +00007244/**
7245 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7246 * the local page cache.
7247 * @xdr: XDR stream where entry resides
7248 * @entry: buffer to fill in with entry data
7249 * @plus: boolean indicating whether this should be a readdirplus entry
7250 *
7251 * Returns zero if successful, otherwise a negative errno value is
7252 * returned.
7253 *
7254 * This function is not invoked during READDIR reply decoding, but
7255 * rather whenever an application invokes the getdents(2) system call
7256 * on a directory already in our cache.
7257 */
7258int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7259 int plus)
Linus Torvalds1da177e2005-04-16 15:20:36 -07007260{
Trond Myklebust256e48b2012-06-21 11:18:13 -04007261 unsigned int savep;
Fred Isamandae100c2011-07-30 20:52:37 -04007262 uint32_t bitmap[3] = {0};
Linus Torvalds1da177e2005-04-16 15:20:36 -07007263 uint32_t len;
Bryan Schumakerbabddc72010-10-20 15:44:29 -04007264 __be32 *p = xdr_inline_decode(xdr, 4);
7265 if (unlikely(!p))
7266 goto out_overflow;
Chuck Leverc08e76d2011-01-28 12:40:55 -05007267 if (*p == xdr_zero) {
Bryan Schumakerbabddc72010-10-20 15:44:29 -04007268 p = xdr_inline_decode(xdr, 4);
7269 if (unlikely(!p))
7270 goto out_overflow;
Chuck Leverc08e76d2011-01-28 12:40:55 -05007271 if (*p == xdr_zero)
Chuck Lever573c4e12010-12-14 14:58:11 +00007272 return -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007273 entry->eof = 1;
Chuck Lever573c4e12010-12-14 14:58:11 +00007274 return -EBADCOOKIE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007275 }
7276
Bryan Schumakerbabddc72010-10-20 15:44:29 -04007277 p = xdr_inline_decode(xdr, 12);
7278 if (unlikely(!p))
7279 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007280 entry->prev_cookie = entry->cookie;
7281 p = xdr_decode_hyper(p, &entry->cookie);
Chuck Leverc08e76d2011-01-28 12:40:55 -05007282 entry->len = be32_to_cpup(p);
Bryan Schumakerbabddc72010-10-20 15:44:29 -04007283
Trond Myklebust9af8c222010-10-24 11:52:55 -04007284 p = xdr_inline_decode(xdr, entry->len);
Bryan Schumakerbabddc72010-10-20 15:44:29 -04007285 if (unlikely(!p))
7286 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007287 entry->name = (const char *) p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007288
7289 /*
7290 * In case the server doesn't return an inode number,
7291 * we fake one here. (We don't use inode number 0,
7292 * since glibc seems to choke on it...)
7293 */
7294 entry->ino = 1;
Trond Myklebust4f082222010-10-24 13:14:02 -04007295 entry->fattr->valid = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007296
Trond Myklebust9af8c222010-10-24 11:52:55 -04007297 if (decode_attr_bitmap(xdr, bitmap) < 0)
Bryan Schumakerbabddc72010-10-20 15:44:29 -04007298 goto out_overflow;
Trond Myklebust9af8c222010-10-24 11:52:55 -04007299
Trond Myklebust256e48b2012-06-21 11:18:13 -04007300 if (decode_attr_length(xdr, &len, &savep) < 0)
Trond Myklebust9af8c222010-10-24 11:52:55 -04007301 goto out_overflow;
7302
Chuck Lever573c4e12010-12-14 14:58:11 +00007303 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
David Quigleyaa9c2662013-05-22 12:50:44 -04007304 NULL, entry->label, entry->server) < 0)
Trond Myklebust9af8c222010-10-24 11:52:55 -04007305 goto out_overflow;
Trond Myklebust28331a42011-04-27 13:47:52 -04007306 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7307 entry->ino = entry->fattr->mounted_on_fileid;
7308 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
Trond Myklebust9af8c222010-10-24 11:52:55 -04007309 entry->ino = entry->fattr->fileid;
7310
Trond Myklebust0b26a0b2010-11-20 14:26:44 -05007311 entry->d_type = DT_UNKNOWN;
7312 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7313 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7314
Chuck Lever573c4e12010-12-14 14:58:11 +00007315 return 0;
Bryan Schumakerbabddc72010-10-20 15:44:29 -04007316
7317out_overflow:
7318 print_overflow_msg(__func__, xdr);
Chuck Lever573c4e12010-12-14 14:58:11 +00007319 return -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007320}
7321
7322/*
7323 * We need to translate between nfs status return values and
7324 * the local errno values which may not be the same.
7325 */
7326static struct {
7327 int stat;
7328 int errno;
7329} nfs_errtbl[] = {
7330 { NFS4_OK, 0 },
Benny Halevy856dff32008-03-31 17:39:06 +03007331 { NFS4ERR_PERM, -EPERM },
7332 { NFS4ERR_NOENT, -ENOENT },
7333 { NFS4ERR_IO, -errno_NFSERR_IO},
7334 { NFS4ERR_NXIO, -ENXIO },
7335 { NFS4ERR_ACCESS, -EACCES },
7336 { NFS4ERR_EXIST, -EEXIST },
7337 { NFS4ERR_XDEV, -EXDEV },
7338 { NFS4ERR_NOTDIR, -ENOTDIR },
7339 { NFS4ERR_ISDIR, -EISDIR },
7340 { NFS4ERR_INVAL, -EINVAL },
7341 { NFS4ERR_FBIG, -EFBIG },
7342 { NFS4ERR_NOSPC, -ENOSPC },
7343 { NFS4ERR_ROFS, -EROFS },
7344 { NFS4ERR_MLINK, -EMLINK },
7345 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7346 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7347 { NFS4ERR_DQUOT, -EDQUOT },
7348 { NFS4ERR_STALE, -ESTALE },
7349 { NFS4ERR_BADHANDLE, -EBADHANDLE },
Benny Halevy856dff32008-03-31 17:39:06 +03007350 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7351 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7352 { NFS4ERR_TOOSMALL, -ETOOSMALL },
Trond Myklebustfdcb4572010-02-08 09:32:40 -05007353 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
Benny Halevy856dff32008-03-31 17:39:06 +03007354 { NFS4ERR_BADTYPE, -EBADTYPE },
7355 { NFS4ERR_LOCKED, -EAGAIN },
Benny Halevy856dff32008-03-31 17:39:06 +03007356 { NFS4ERR_SYMLINK, -ELOOP },
7357 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7358 { NFS4ERR_DEADLOCK, -EDEADLK },
Benny Halevy856dff32008-03-31 17:39:06 +03007359 { -1, -EIO }
Linus Torvalds1da177e2005-04-16 15:20:36 -07007360};
7361
7362/*
7363 * Convert an NFS error code to a local one.
7364 * This one is used jointly by NFSv2 and NFSv3.
7365 */
7366static int
David Howells0a8ea432006-08-22 20:06:08 -04007367nfs4_stat_to_errno(int stat)
Linus Torvalds1da177e2005-04-16 15:20:36 -07007368{
7369 int i;
7370 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7371 if (nfs_errtbl[i].stat == stat)
7372 return nfs_errtbl[i].errno;
7373 }
7374 if (stat <= 10000 || stat > 10100) {
7375 /* The server is looney tunes. */
Trond Myklebustfdcb4572010-02-08 09:32:40 -05007376 return -EREMOTEIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007377 }
7378 /* If we cannot translate the error, the recovery routines should
7379 * handle it.
7380 * Note: remaining NFSv4 error codes have values > 10000, so should
7381 * not conflict with native Linux error codes.
7382 */
Benny Halevy856dff32008-03-31 17:39:06 +03007383 return -stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007384}
7385
Anna Schumaker1c6dcbe2014-09-26 13:58:48 -04007386#ifdef CONFIG_NFS_V4_2
7387#include "nfs42xdr.c"
7388#endif /* CONFIG_NFS_V4_2 */
7389
Linus Torvalds1da177e2005-04-16 15:20:36 -07007390#define PROC(proc, argtype, restype) \
7391[NFSPROC4_CLNT_##proc] = { \
7392 .p_proc = NFSPROC4_COMPOUND, \
Chuck Lever9f06c712010-12-14 14:59:18 +00007393 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
Chuck Leverbf269552010-12-14 14:59:29 +00007394 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
Chuck Lever2bea90d2007-03-29 16:47:53 -04007395 .p_arglen = NFS4_##argtype##_sz, \
7396 .p_replen = NFS4_##restype##_sz, \
Chuck Levercc0175c2006-03-20 13:44:22 -05007397 .p_statidx = NFSPROC4_CLNT_##proc, \
7398 .p_name = #proc, \
Andy Adamson05d564f2008-12-23 16:06:15 -05007399}
Linus Torvalds1da177e2005-04-16 15:20:36 -07007400
Anna Schumaker7c61f0d2015-04-14 10:34:20 -04007401#define STUB(proc) \
7402[NFSPROC4_CLNT_##proc] = { \
7403 .p_name = #proc, \
7404}
7405
Linus Torvalds1da177e2005-04-16 15:20:36 -07007406struct rpc_procinfo nfs4_procedures[] = {
Chuck Lever7d93bd712010-12-14 14:57:42 +00007407 PROC(READ, enc_read, dec_read),
7408 PROC(WRITE, enc_write, dec_write),
7409 PROC(COMMIT, enc_commit, dec_commit),
7410 PROC(OPEN, enc_open, dec_open),
7411 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7412 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7413 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7414 PROC(CLOSE, enc_close, dec_close),
7415 PROC(SETATTR, enc_setattr, dec_setattr),
7416 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7417 PROC(RENEW, enc_renew, dec_renew),
7418 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7419 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7420 PROC(LOCK, enc_lock, dec_lock),
7421 PROC(LOCKT, enc_lockt, dec_lockt),
7422 PROC(LOCKU, enc_locku, dec_locku),
7423 PROC(ACCESS, enc_access, dec_access),
7424 PROC(GETATTR, enc_getattr, dec_getattr),
7425 PROC(LOOKUP, enc_lookup, dec_lookup),
7426 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7427 PROC(REMOVE, enc_remove, dec_remove),
7428 PROC(RENAME, enc_rename, dec_rename),
7429 PROC(LINK, enc_link, dec_link),
7430 PROC(SYMLINK, enc_symlink, dec_symlink),
7431 PROC(CREATE, enc_create, dec_create),
7432 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7433 PROC(STATFS, enc_statfs, dec_statfs),
7434 PROC(READLINK, enc_readlink, dec_readlink),
7435 PROC(READDIR, enc_readdir, dec_readdir),
7436 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7437 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7438 PROC(GETACL, enc_getacl, dec_getacl),
7439 PROC(SETACL, enc_setacl, dec_setacl),
7440 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7441 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00007442 PROC(SECINFO, enc_secinfo, dec_secinfo),
Chuck Lever44c99932013-10-17 14:13:30 -04007443 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present),
Benny Halevy99fe60d2009-04-01 09:22:29 -04007444#if defined(CONFIG_NFS_V4_1)
Chuck Lever7d93bd712010-12-14 14:57:42 +00007445 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7446 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7447 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7448 PROC(SEQUENCE, enc_sequence, dec_sequence),
7449 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7450 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7451 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7452 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
Andy Adamson863a3c62011-03-23 13:27:54 +00007453 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
Benny Halevycbe82602011-05-22 19:52:37 +03007454 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
Bryan Schumakerfca78d62011-06-02 14:59:07 -04007455 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
Bryan Schumaker7d974792011-06-02 14:59:08 -04007456 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
Bryan Schumaker9aeda352011-06-02 14:59:09 -04007457 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
Anna Schumaker7c61f0d2015-04-14 10:34:20 -04007458 STUB(GETDEVICELIST),
Trond Myklebustad24ecf2012-05-25 17:11:42 -04007459 PROC(BIND_CONN_TO_SESSION,
7460 enc_bind_conn_to_session, dec_bind_conn_to_session),
Trond Myklebust66245532012-05-25 17:18:09 -04007461 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
Benny Halevy99fe60d2009-04-01 09:22:29 -04007462#endif /* CONFIG_NFS_V4_1 */
Anna Schumaker1c6dcbe2014-09-26 13:58:48 -04007463#ifdef CONFIG_NFS_V4_2
7464 PROC(SEEK, enc_seek, dec_seek),
Anna Schumakerf4ac1672014-11-25 13:18:15 -05007465 PROC(ALLOCATE, enc_allocate, dec_allocate),
Anna Schumaker624bd5b2014-11-25 13:18:16 -05007466 PROC(DEALLOCATE, enc_deallocate, dec_deallocate),
Trond Myklebustbe3a5d22015-06-23 19:51:55 +08007467 PROC(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
Anna Schumaker1c6dcbe2014-09-26 13:58:48 -04007468#endif /* CONFIG_NFS_V4_2 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07007469};
7470
Trond Myklebusta613fa12012-01-20 13:53:56 -05007471const struct rpc_version nfs_version4 = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07007472 .number = 4,
Tobias Klausere8c96f82006-03-24 03:15:34 -08007473 .nrprocs = ARRAY_SIZE(nfs4_procedures),
Linus Torvalds1da177e2005-04-16 15:20:36 -07007474 .procs = nfs4_procedures
7475};
7476
7477/*
7478 * Local variables:
7479 * c-basic-offset: 8
7480 * End:
7481 */