blob: 5e2724a928ed3e19092d7878bb260393c983f894 [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);
Andreas Gruenbacher8fbcf232015-11-03 18:25:34 +01001662 xdr_write_pages(xdr, arg->acl_pages, 0, 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);
Trond Myklebustf7d3e542017-08-01 16:02:47 -04001764 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 */
Deepa Dinamani2f86e092016-10-01 16:46:26 -07001853 *p++ = cpu_to_be32(ktime_to_ns(nn->boot_time)); /* 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);
Trond Myklebust2e18d4d2016-06-26 18:54:58 -04001988 if (args->lastbytewritten != U64_MAX) {
1989 p = reserve_space(xdr, 20);
1990 *p++ = cpu_to_be32(1); /* newoffset = TRUE */
1991 p = xdr_encode_hyper(p, args->lastbytewritten);
1992 } else {
1993 p = reserve_space(xdr, 12);
1994 *p++ = cpu_to_be32(0); /* newoffset = FALSE */
1995 }
Andy Adamson863a3c62011-03-23 13:27:54 +00001996 *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
1997 *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
Benny Halevyac7db722011-05-22 19:53:48 +03001998
Christoph Hellwig5f919c92014-08-21 11:09:25 -05001999 if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit) {
Benny Halevyac7db722011-05-22 19:53:48 +03002000 NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
2001 NFS_I(inode)->layout, xdr, args);
Christoph Hellwig5f919c92014-08-21 11:09:25 -05002002 } else {
2003 encode_uint32(xdr, args->layoutupdate_len);
2004 if (args->layoutupdate_pages) {
2005 xdr_write_pages(xdr, args->layoutupdate_pages, 0,
2006 args->layoutupdate_len);
2007 }
2008 }
Andy Adamson863a3c62011-03-23 13:27:54 +00002009
Andy Adamson863a3c62011-03-23 13:27:54 +00002010 return 0;
2011}
Benny Halevycbe82602011-05-22 19:52:37 +03002012
2013static void
2014encode_layoutreturn(struct xdr_stream *xdr,
2015 const struct nfs4_layoutreturn_args *args,
2016 struct compound_hdr *hdr)
2017{
2018 __be32 *p;
2019
Trond Myklebust475d4ba2012-03-05 11:27:16 -05002020 encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
2021 p = reserve_space(xdr, 16);
Benny Halevycbe82602011-05-22 19:52:37 +03002022 *p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
2023 *p++ = cpu_to_be32(args->layout_type);
Peng Tao15eb67c2014-11-17 09:30:36 +08002024 *p++ = cpu_to_be32(args->range.iomode);
Benny Halevycbe82602011-05-22 19:52:37 +03002025 *p = cpu_to_be32(RETURN_FILE);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05002026 p = reserve_space(xdr, 16);
Peng Tao15eb67c2014-11-17 09:30:36 +08002027 p = xdr_encode_hyper(p, args->range.offset);
2028 p = xdr_encode_hyper(p, args->range.length);
Benny Halevycbe82602011-05-22 19:52:37 +03002029 spin_lock(&args->inode->i_lock);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05002030 encode_nfs4_stateid(xdr, &args->stateid);
Benny Halevycbe82602011-05-22 19:52:37 +03002031 spin_unlock(&args->inode->i_lock);
Andy Adamson04a55542011-05-22 19:53:10 +03002032 if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
2033 NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
2034 NFS_I(args->inode)->layout, xdr, args);
Trond Myklebust475d4ba2012-03-05 11:27:16 -05002035 } else
2036 encode_uint32(xdr, 0);
Benny Halevycbe82602011-05-22 19:52:37 +03002037}
Bryan Schumakerfca78d62011-06-02 14:59:07 -04002038
2039static int
2040encode_secinfo_no_name(struct xdr_stream *xdr,
2041 const struct nfs41_secinfo_no_name_args *args,
2042 struct compound_hdr *hdr)
2043{
Trond Myklebust475d4ba2012-03-05 11:27:16 -05002044 encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
2045 encode_uint32(xdr, args->style);
Bryan Schumakerfca78d62011-06-02 14:59:07 -04002046 return 0;
2047}
Bryan Schumaker7d974792011-06-02 14:59:08 -04002048
2049static void encode_test_stateid(struct xdr_stream *xdr,
2050 struct nfs41_test_stateid_args *args,
2051 struct compound_hdr *hdr)
2052{
Trond Myklebust475d4ba2012-03-05 11:27:16 -05002053 encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
2054 encode_uint32(xdr, 1);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05002055 encode_nfs4_stateid(xdr, args->stateid);
Bryan Schumaker7d974792011-06-02 14:59:08 -04002056}
Bryan Schumaker9aeda352011-06-02 14:59:09 -04002057
2058static void encode_free_stateid(struct xdr_stream *xdr,
2059 struct nfs41_free_stateid_args *args,
2060 struct compound_hdr *hdr)
2061{
Trond Myklebustab19b482012-03-04 18:13:57 -05002062 encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
Trond Myklebust7c1d5fa2013-05-03 14:40:01 -04002063 encode_nfs4_stateid(xdr, &args->stateid);
Bryan Schumaker9aeda352011-06-02 14:59:09 -04002064}
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002065#endif /* CONFIG_NFS_V4_1 */
2066
Linus Torvalds1da177e2005-04-16 15:20:36 -07002067/*
2068 * END OF "GENERIC" ENCODE ROUTINES.
2069 */
2070
Benny Halevy66cc0422009-04-01 09:22:10 -04002071static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
2072{
2073#if defined(CONFIG_NFS_V4_1)
Chuck Lever3bd23842013-08-09 12:49:19 -04002074 struct nfs4_session *session = args->sa_slot->table->session;
2075 if (session)
2076 return session->clp->cl_mvops->minor_version;
Benny Halevy66cc0422009-04-01 09:22:10 -04002077#endif /* CONFIG_NFS_V4_1 */
2078 return 0;
2079}
2080
Linus Torvalds1da177e2005-04-16 15:20:36 -07002081/*
2082 * Encode an ACCESS request
2083 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002084static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
2085 const struct nfs4_accessargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002086{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002087 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002088 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002089 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002090
Chuck Lever9f06c712010-12-14 14:59:18 +00002091 encode_compound_hdr(xdr, req, &hdr);
2092 encode_sequence(xdr, &args->seq_args, &hdr);
2093 encode_putfh(xdr, args->fh, &hdr);
2094 encode_access(xdr, args->access, &hdr);
2095 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002096 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002097}
2098
2099/*
2100 * Encode LOOKUP request
2101 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002102static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
2103 const struct nfs4_lookup_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002104{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002105 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002106 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002107 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002108
Chuck Lever9f06c712010-12-14 14:59:18 +00002109 encode_compound_hdr(xdr, req, &hdr);
2110 encode_sequence(xdr, &args->seq_args, &hdr);
2111 encode_putfh(xdr, args->dir_fh, &hdr);
2112 encode_lookup(xdr, args->name, &hdr);
2113 encode_getfh(xdr, &hdr);
2114 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002115 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002116}
2117
2118/*
2119 * Encode LOOKUP_ROOT request
2120 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002121static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
2122 struct xdr_stream *xdr,
2123 const struct nfs4_lookup_root_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002124{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002125 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002126 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002127 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002128
Chuck Lever9f06c712010-12-14 14:59:18 +00002129 encode_compound_hdr(xdr, req, &hdr);
2130 encode_sequence(xdr, &args->seq_args, &hdr);
2131 encode_putrootfh(xdr, &hdr);
2132 encode_getfh(xdr, &hdr);
2133 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002134 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002135}
2136
2137/*
2138 * Encode REMOVE request
2139 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002140static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
2141 const struct nfs_removeargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002142{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002143 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002144 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002145 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002146
Chuck Lever9f06c712010-12-14 14:59:18 +00002147 encode_compound_hdr(xdr, req, &hdr);
2148 encode_sequence(xdr, &args->seq_args, &hdr);
2149 encode_putfh(xdr, args->fh, &hdr);
2150 encode_remove(xdr, &args->name, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002151 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002152}
2153
2154/*
2155 * Encode RENAME request
2156 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002157static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
2158 const struct nfs_renameargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002159{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002160 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002161 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002162 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002163
Chuck Lever9f06c712010-12-14 14:59:18 +00002164 encode_compound_hdr(xdr, req, &hdr);
2165 encode_sequence(xdr, &args->seq_args, &hdr);
2166 encode_putfh(xdr, args->old_dir, &hdr);
2167 encode_savefh(xdr, &hdr);
2168 encode_putfh(xdr, args->new_dir, &hdr);
2169 encode_rename(xdr, args->old_name, args->new_name, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002170 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002171}
2172
2173/*
2174 * Encode LINK request
2175 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002176static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
2177 const struct nfs4_link_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002178{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002179 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002180 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002181 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002182
Chuck Lever9f06c712010-12-14 14:59:18 +00002183 encode_compound_hdr(xdr, req, &hdr);
2184 encode_sequence(xdr, &args->seq_args, &hdr);
2185 encode_putfh(xdr, args->fh, &hdr);
2186 encode_savefh(xdr, &hdr);
2187 encode_putfh(xdr, args->dir_fh, &hdr);
2188 encode_link(xdr, args->name, &hdr);
Chuck Lever9f06c712010-12-14 14:59:18 +00002189 encode_restorefh(xdr, &hdr);
2190 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002191 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002192}
2193
2194/*
2195 * Encode CREATE request
2196 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002197static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
2198 const struct nfs4_create_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002199{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002200 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002201 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002202 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002203
Chuck Lever9f06c712010-12-14 14:59:18 +00002204 encode_compound_hdr(xdr, req, &hdr);
2205 encode_sequence(xdr, &args->seq_args, &hdr);
2206 encode_putfh(xdr, args->dir_fh, &hdr);
Chuck Lever9f06c712010-12-14 14:59:18 +00002207 encode_create(xdr, args, &hdr);
2208 encode_getfh(xdr, &hdr);
2209 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002210 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002211}
2212
2213/*
2214 * Encode SYMLINK request
2215 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002216static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2217 const struct nfs4_create_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002218{
Chuck Lever9f06c712010-12-14 14:59:18 +00002219 nfs4_xdr_enc_create(req, xdr, args);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002220}
2221
2222/*
2223 * Encode GETATTR request
2224 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002225static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2226 const struct nfs4_getattr_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002227{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002228 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002229 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002230 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002231
Chuck Lever9f06c712010-12-14 14:59:18 +00002232 encode_compound_hdr(xdr, req, &hdr);
2233 encode_sequence(xdr, &args->seq_args, &hdr);
2234 encode_putfh(xdr, args->fh, &hdr);
2235 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002236 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002237}
2238
2239/*
2240 * Encode a CLOSE request
2241 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002242static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
2243 struct nfs_closeargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002244{
Andy Adamson05d564f2008-12-23 16:06:15 -05002245 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002246 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Andy Adamson05d564f2008-12-23 16:06:15 -05002247 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002248
Chuck Lever9f06c712010-12-14 14:59:18 +00002249 encode_compound_hdr(xdr, req, &hdr);
2250 encode_sequence(xdr, &args->seq_args, &hdr);
2251 encode_putfh(xdr, args->fh, &hdr);
2252 encode_close(xdr, args, &hdr);
2253 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002254 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002255}
2256
2257/*
2258 * Encode an OPEN request
2259 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002260static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
2261 struct nfs_openargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002262{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002263 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002264 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002265 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002266
Chuck Lever9f06c712010-12-14 14:59:18 +00002267 encode_compound_hdr(xdr, req, &hdr);
2268 encode_sequence(xdr, &args->seq_args, &hdr);
2269 encode_putfh(xdr, args->fh, &hdr);
Chuck Lever9f06c712010-12-14 14:59:18 +00002270 encode_open(xdr, args, &hdr);
2271 encode_getfh(xdr, &hdr);
Weston Andros Adamsonae2bb032012-10-02 14:49:52 -07002272 if (args->access)
2273 encode_access(xdr, args->access, &hdr);
Trond Myklebust1549210f2012-06-05 09:16:47 -04002274 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002275 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002276}
2277
2278/*
2279 * Encode an OPEN_CONFIRM request
2280 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002281static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
2282 struct xdr_stream *xdr,
2283 struct nfs_open_confirmargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002284{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002285 struct compound_hdr hdr = {
Andy Adamsond0179312008-12-23 16:06:17 -05002286 .nops = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002287 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002288
Chuck Lever9f06c712010-12-14 14:59:18 +00002289 encode_compound_hdr(xdr, req, &hdr);
2290 encode_putfh(xdr, args->fh, &hdr);
2291 encode_open_confirm(xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002292 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002293}
2294
2295/*
2296 * Encode an OPEN request with no attributes.
2297 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002298static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
2299 struct xdr_stream *xdr,
2300 struct nfs_openargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002301{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002302 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002303 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002304 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002305
Chuck Lever9f06c712010-12-14 14:59:18 +00002306 encode_compound_hdr(xdr, req, &hdr);
2307 encode_sequence(xdr, &args->seq_args, &hdr);
2308 encode_putfh(xdr, args->fh, &hdr);
2309 encode_open(xdr, args, &hdr);
Weston Andros Adamsonae2bb032012-10-02 14:49:52 -07002310 if (args->access)
2311 encode_access(xdr, args->access, &hdr);
Andy Adamsone23008e2012-10-02 21:07:32 -04002312 encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002313 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002314}
2315
2316/*
2317 * Encode an OPEN_DOWNGRADE request
2318 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002319static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
2320 struct xdr_stream *xdr,
2321 struct nfs_closeargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002322{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002323 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002324 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002325 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002326
Chuck Lever9f06c712010-12-14 14:59:18 +00002327 encode_compound_hdr(xdr, req, &hdr);
2328 encode_sequence(xdr, &args->seq_args, &hdr);
2329 encode_putfh(xdr, args->fh, &hdr);
2330 encode_open_downgrade(xdr, args, &hdr);
2331 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002332 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002333}
2334
2335/*
2336 * Encode a LOCK request
2337 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002338static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
2339 struct nfs_lock_args *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002340{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002341 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002342 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002343 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002344
Chuck Lever9f06c712010-12-14 14:59:18 +00002345 encode_compound_hdr(xdr, req, &hdr);
2346 encode_sequence(xdr, &args->seq_args, &hdr);
2347 encode_putfh(xdr, args->fh, &hdr);
2348 encode_lock(xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002349 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002350}
2351
2352/*
2353 * Encode a LOCKT request
2354 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002355static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
2356 struct nfs_lockt_args *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002357{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002358 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002359 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002360 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002361
Chuck Lever9f06c712010-12-14 14:59:18 +00002362 encode_compound_hdr(xdr, req, &hdr);
2363 encode_sequence(xdr, &args->seq_args, &hdr);
2364 encode_putfh(xdr, args->fh, &hdr);
2365 encode_lockt(xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002366 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002367}
2368
2369/*
2370 * Encode a LOCKU request
2371 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002372static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
2373 struct nfs_locku_args *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002374{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002375 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002376 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002377 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002378
Chuck Lever9f06c712010-12-14 14:59:18 +00002379 encode_compound_hdr(xdr, req, &hdr);
2380 encode_sequence(xdr, &args->seq_args, &hdr);
2381 encode_putfh(xdr, args->fh, &hdr);
2382 encode_locku(xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002383 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002384}
2385
Chuck Lever9f06c712010-12-14 14:59:18 +00002386static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
2387 struct xdr_stream *xdr,
2388 struct nfs_release_lockowner_args *args)
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04002389{
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04002390 struct compound_hdr hdr = {
2391 .minorversion = 0,
2392 };
2393
Chuck Lever9f06c712010-12-14 14:59:18 +00002394 encode_compound_hdr(xdr, req, &hdr);
2395 encode_release_lockowner(xdr, &args->lock_owner, &hdr);
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04002396 encode_nops(&hdr);
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04002397}
2398
Linus Torvalds1da177e2005-04-16 15:20:36 -07002399/*
2400 * Encode a READLINK request
2401 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002402static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
2403 const struct nfs4_readlink *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002404{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002405 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002406 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002407 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002408
Chuck Lever9f06c712010-12-14 14:59:18 +00002409 encode_compound_hdr(xdr, req, &hdr);
2410 encode_sequence(xdr, &args->seq_args, &hdr);
2411 encode_putfh(xdr, args->fh, &hdr);
2412 encode_readlink(xdr, args, req, &hdr);
Trond Myklebuste3a535e2007-07-19 10:03:38 -04002413
Benny Halevy28f56692009-04-01 09:22:09 -04002414 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
Trond Myklebuste3a535e2007-07-19 10:03:38 -04002415 args->pgbase, args->pglen);
Andy Adamsond0179312008-12-23 16:06:17 -05002416 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002417}
2418
2419/*
2420 * Encode a READDIR request
2421 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002422static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
2423 const struct nfs4_readdir_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002424{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002425 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002426 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002427 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002428
Chuck Lever9f06c712010-12-14 14:59:18 +00002429 encode_compound_hdr(xdr, req, &hdr);
2430 encode_sequence(xdr, &args->seq_args, &hdr);
2431 encode_putfh(xdr, args->fh, &hdr);
2432 encode_readdir(xdr, args, req, &hdr);
Trond Myklebustd6ac02d2007-07-19 10:03:37 -04002433
Benny Halevy28f56692009-04-01 09:22:09 -04002434 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
Trond Myklebustd6ac02d2007-07-19 10:03:37 -04002435 args->pgbase, args->count);
2436 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
Benny Halevy28f56692009-04-01 09:22:09 -04002437 __func__, hdr.replen << 2, args->pages,
Trond Myklebustd6ac02d2007-07-19 10:03:37 -04002438 args->pgbase, args->count);
Andy Adamsond0179312008-12-23 16:06:17 -05002439 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002440}
2441
2442/*
2443 * Encode a READ request
2444 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002445static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
Anna Schumaker3c6b8992014-05-06 09:12:24 -04002446 struct nfs_pgio_args *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002447{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002448 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002449 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002450 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002451
Chuck Lever9f06c712010-12-14 14:59:18 +00002452 encode_compound_hdr(xdr, req, &hdr);
2453 encode_sequence(xdr, &args->seq_args, &hdr);
2454 encode_putfh(xdr, args->fh, &hdr);
2455 encode_read(xdr, args, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002456
Benny Halevy28f56692009-04-01 09:22:09 -04002457 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002458 args->pages, args->pgbase, args->count);
\"Talpey, Thomas\4f22ccc2007-09-10 13:44:58 -04002459 req->rq_rcv_buf.flags |= XDRBUF_READ;
Andy Adamsond0179312008-12-23 16:06:17 -05002460 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002461}
2462
2463/*
2464 * Encode an SETATTR request
2465 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002466static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
2467 struct nfs_setattrargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002468{
Andy Adamson05d564f2008-12-23 16:06:15 -05002469 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002470 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Andy Adamson05d564f2008-12-23 16:06:15 -05002471 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002472
Chuck Lever9f06c712010-12-14 14:59:18 +00002473 encode_compound_hdr(xdr, req, &hdr);
2474 encode_sequence(xdr, &args->seq_args, &hdr);
2475 encode_putfh(xdr, args->fh, &hdr);
2476 encode_setattr(xdr, args, args->server, &hdr);
2477 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002478 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002479}
2480
2481/*
J. Bruce Fields029d1052005-06-22 17:16:22 +00002482 * Encode a GETACL request
2483 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002484static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
2485 struct nfs_getaclargs *args)
J. Bruce Fields029d1052005-06-22 17:16:22 +00002486{
J. Bruce Fields029d1052005-06-22 17:16:22 +00002487 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002488 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
J. Bruce Fields029d1052005-06-22 17:16:22 +00002489 };
Benny Halevy28f56692009-04-01 09:22:09 -04002490 uint32_t replen;
J. Bruce Fields029d1052005-06-22 17:16:22 +00002491
Chuck Lever9f06c712010-12-14 14:59:18 +00002492 encode_compound_hdr(xdr, req, &hdr);
2493 encode_sequence(xdr, &args->seq_args, &hdr);
2494 encode_putfh(xdr, args->fh, &hdr);
J. Bruce Fields3f22cc62017-02-23 14:53:39 -05002495 replen = hdr.replen + op_decode_hdr_maxsz;
Chuck Lever9f06c712010-12-14 14:59:18 +00002496 encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002497
Benny Halevy28f56692009-04-01 09:22:09 -04002498 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
Andreas Gruenbacher8fbcf232015-11-03 18:25:34 +01002499 args->acl_pages, 0, args->acl_len);
Andy Adamsonbf118a32011-12-07 11:55:27 -05002500
Andy Adamsond0179312008-12-23 16:06:17 -05002501 encode_nops(&hdr);
J. Bruce Fields029d1052005-06-22 17:16:22 +00002502}
2503
2504/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002505 * Encode a WRITE request
2506 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002507static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
Anna Schumaker3c6b8992014-05-06 09:12:24 -04002508 struct nfs_pgio_args *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002509{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002510 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002511 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002512 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002513
Chuck Lever9f06c712010-12-14 14:59:18 +00002514 encode_compound_hdr(xdr, req, &hdr);
2515 encode_sequence(xdr, &args->seq_args, &hdr);
2516 encode_putfh(xdr, args->fh, &hdr);
2517 encode_write(xdr, args, &hdr);
\"Talpey, Thomas\4f22ccc2007-09-10 13:44:58 -04002518 req->rq_snd_buf.flags |= XDRBUF_WRITE;
Fred Isaman7ffd1062011-03-03 15:13:46 +00002519 if (args->bitmask)
2520 encode_getfattr(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002521 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002522}
2523
2524/*
2525 * a COMMIT request
2526 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002527static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
Fred Isaman0b7c0152012-04-20 14:47:39 -04002528 struct nfs_commitargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002529{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002530 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002531 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002532 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002533
Chuck Lever9f06c712010-12-14 14:59:18 +00002534 encode_compound_hdr(xdr, req, &hdr);
2535 encode_sequence(xdr, &args->seq_args, &hdr);
2536 encode_putfh(xdr, args->fh, &hdr);
2537 encode_commit(xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002538 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002539}
2540
2541/*
2542 * FSINFO request
2543 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002544static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
2545 struct nfs4_fsinfo_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002546{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002547 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002548 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002549 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002550
Chuck Lever9f06c712010-12-14 14:59:18 +00002551 encode_compound_hdr(xdr, req, &hdr);
2552 encode_sequence(xdr, &args->seq_args, &hdr);
2553 encode_putfh(xdr, args->fh, &hdr);
2554 encode_fsinfo(xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002555 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002556}
2557
2558/*
2559 * a PATHCONF request
2560 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002561static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
2562 const struct nfs4_pathconf_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002563{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002564 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002565 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002566 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002567
Chuck Lever9f06c712010-12-14 14:59:18 +00002568 encode_compound_hdr(xdr, req, &hdr);
2569 encode_sequence(xdr, &args->seq_args, &hdr);
2570 encode_putfh(xdr, args->fh, &hdr);
2571 encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002572 &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002573 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002574}
2575
2576/*
2577 * a STATFS request
2578 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002579static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
2580 const struct nfs4_statfs_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002581{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002582 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002583 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002584 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002585
Chuck Lever9f06c712010-12-14 14:59:18 +00002586 encode_compound_hdr(xdr, req, &hdr);
2587 encode_sequence(xdr, &args->seq_args, &hdr);
2588 encode_putfh(xdr, args->fh, &hdr);
2589 encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002590 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002591 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002592}
2593
2594/*
2595 * GETATTR_BITMAP request
2596 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002597static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
2598 struct xdr_stream *xdr,
2599 struct nfs4_server_caps_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002600{
Kinglong Mee8c612822015-08-26 21:12:58 +08002601 const u32 *bitmask = args->bitmask;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002602 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002603 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002604 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002605
Chuck Lever9f06c712010-12-14 14:59:18 +00002606 encode_compound_hdr(xdr, req, &hdr);
2607 encode_sequence(xdr, &args->seq_args, &hdr);
2608 encode_putfh(xdr, args->fhandle, &hdr);
Kinglong Mee8c612822015-08-26 21:12:58 +08002609 encode_getattr_three(xdr, bitmask[0], bitmask[1], bitmask[2], &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002610 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002611}
2612
2613/*
2614 * a RENEW request
2615 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002616static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
2617 struct nfs_client *clp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002618{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002619 struct compound_hdr hdr = {
Andy Adamsond0179312008-12-23 16:06:17 -05002620 .nops = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002621 };
2622
Chuck Lever9f06c712010-12-14 14:59:18 +00002623 encode_compound_hdr(xdr, req, &hdr);
Chuck Leverbb4dae52012-03-01 17:01:48 -05002624 encode_renew(xdr, clp->cl_clientid, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002625 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002626}
2627
2628/*
2629 * a SETCLIENTID request
2630 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002631static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
2632 struct xdr_stream *xdr,
2633 struct nfs4_setclientid *sc)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002634{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002635 struct compound_hdr hdr = {
Andy Adamsond0179312008-12-23 16:06:17 -05002636 .nops = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002637 };
2638
Chuck Lever9f06c712010-12-14 14:59:18 +00002639 encode_compound_hdr(xdr, req, &hdr);
2640 encode_setclientid(xdr, sc, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002641 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002642}
2643
2644/*
2645 * a SETCLIENTID_CONFIRM request
2646 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002647static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
2648 struct xdr_stream *xdr,
2649 struct nfs4_setclientid_res *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002650{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002651 struct compound_hdr hdr = {
Andy Adamsond0179312008-12-23 16:06:17 -05002652 .nops = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002653 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002654
Chuck Lever9f06c712010-12-14 14:59:18 +00002655 encode_compound_hdr(xdr, req, &hdr);
2656 encode_setclientid_confirm(xdr, arg, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002657 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002658}
2659
2660/*
2661 * DELEGRETURN request
2662 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002663static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
2664 struct xdr_stream *xdr,
2665 const struct nfs4_delegreturnargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002666{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002667 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002668 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002669 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002670
Chuck Lever9f06c712010-12-14 14:59:18 +00002671 encode_compound_hdr(xdr, req, &hdr);
2672 encode_sequence(xdr, &args->seq_args, &hdr);
2673 encode_putfh(xdr, args->fhandle, &hdr);
Chuck Lever9f06c712010-12-14 14:59:18 +00002674 encode_getfattr(xdr, args->bitmask, &hdr);
Trond Myklebuste144cbc2012-04-28 16:05:03 -04002675 encode_delegreturn(xdr, args->stateid, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002676 encode_nops(&hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002677}
2678
2679/*
Trond Myklebust683b57b2006-06-09 09:34:22 -04002680 * Encode FS_LOCATIONS request
2681 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002682static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
2683 struct xdr_stream *xdr,
2684 struct nfs4_fs_locations_arg *args)
Trond Myklebust683b57b2006-06-09 09:34:22 -04002685{
Trond Myklebust683b57b2006-06-09 09:34:22 -04002686 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002687 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Trond Myklebust683b57b2006-06-09 09:34:22 -04002688 };
Benny Halevy28f56692009-04-01 09:22:09 -04002689 uint32_t replen;
Trond Myklebust683b57b2006-06-09 09:34:22 -04002690
Chuck Lever9f06c712010-12-14 14:59:18 +00002691 encode_compound_hdr(xdr, req, &hdr);
2692 encode_sequence(xdr, &args->seq_args, &hdr);
Chuck Leverb03d7352013-10-17 14:12:50 -04002693 if (args->migration) {
2694 encode_putfh(xdr, args->fh, &hdr);
2695 replen = hdr.replen;
2696 encode_fs_locations(xdr, args->bitmask, &hdr);
2697 if (args->renew)
2698 encode_renew(xdr, args->clientid, &hdr);
2699 } else {
2700 encode_putfh(xdr, args->dir_fh, &hdr);
2701 encode_lookup(xdr, args->name, &hdr);
2702 replen = hdr.replen;
2703 encode_fs_locations(xdr, args->bitmask, &hdr);
2704 }
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002705
Chuck Leverb03d7352013-10-17 14:12:50 -04002706 /* Set up reply kvec to capture returned fs_locations array. */
Benny Halevy28f56692009-04-01 09:22:09 -04002707 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
Trond Myklebust683b57b2006-06-09 09:34:22 -04002708 0, PAGE_SIZE);
Andy Adamsond0179312008-12-23 16:06:17 -05002709 encode_nops(&hdr);
Trond Myklebust683b57b2006-06-09 09:34:22 -04002710}
2711
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00002712/*
2713 * Encode SECINFO request
2714 */
2715static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
2716 struct xdr_stream *xdr,
2717 struct nfs4_secinfo_arg *args)
2718{
2719 struct compound_hdr hdr = {
2720 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2721 };
2722
2723 encode_compound_hdr(xdr, req, &hdr);
2724 encode_sequence(xdr, &args->seq_args, &hdr);
2725 encode_putfh(xdr, args->dir_fh, &hdr);
2726 encode_secinfo(xdr, args->name, &hdr);
2727 encode_nops(&hdr);
2728}
2729
Chuck Lever44c99932013-10-17 14:13:30 -04002730/*
2731 * Encode FSID_PRESENT request
2732 */
2733static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req,
2734 struct xdr_stream *xdr,
2735 struct nfs4_fsid_present_arg *args)
2736{
2737 struct compound_hdr hdr = {
2738 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2739 };
2740
2741 encode_compound_hdr(xdr, req, &hdr);
2742 encode_sequence(xdr, &args->seq_args, &hdr);
2743 encode_putfh(xdr, args->fh, &hdr);
2744 encode_getfh(xdr, &hdr);
2745 if (args->renew)
2746 encode_renew(xdr, args->clientid, &hdr);
2747 encode_nops(&hdr);
2748}
2749
Benny Halevy99fe60d2009-04-01 09:22:29 -04002750#if defined(CONFIG_NFS_V4_1)
2751/*
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04002752 * BIND_CONN_TO_SESSION request
2753 */
2754static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
2755 struct xdr_stream *xdr,
Trond Myklebust71a097c2015-02-18 09:27:18 -08002756 struct nfs41_bind_conn_to_session_args *args)
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04002757{
2758 struct compound_hdr hdr = {
Trond Myklebust71a097c2015-02-18 09:27:18 -08002759 .minorversion = args->client->cl_mvops->minor_version,
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04002760 };
2761
2762 encode_compound_hdr(xdr, req, &hdr);
Trond Myklebust71a097c2015-02-18 09:27:18 -08002763 encode_bind_conn_to_session(xdr, args, &hdr);
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04002764 encode_nops(&hdr);
2765}
2766
2767/*
Benny Halevy99fe60d2009-04-01 09:22:29 -04002768 * EXCHANGE_ID request
2769 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002770static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
2771 struct xdr_stream *xdr,
2772 struct nfs41_exchange_id_args *args)
Benny Halevy99fe60d2009-04-01 09:22:29 -04002773{
Benny Halevy99fe60d2009-04-01 09:22:29 -04002774 struct compound_hdr hdr = {
Trond Myklebusta4432342010-06-16 09:52:27 -04002775 .minorversion = args->client->cl_mvops->minor_version,
Benny Halevy99fe60d2009-04-01 09:22:29 -04002776 };
2777
Chuck Lever9f06c712010-12-14 14:59:18 +00002778 encode_compound_hdr(xdr, req, &hdr);
2779 encode_exchange_id(xdr, args, &hdr);
Benny Halevy99fe60d2009-04-01 09:22:29 -04002780 encode_nops(&hdr);
Benny Halevy99fe60d2009-04-01 09:22:29 -04002781}
Andy Adamson2050f0c2009-04-01 09:22:30 -04002782
2783/*
Andy Adamsonfc931582009-04-01 09:22:31 -04002784 * a CREATE_SESSION request
2785 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002786static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
2787 struct xdr_stream *xdr,
2788 struct nfs41_create_session_args *args)
Andy Adamsonfc931582009-04-01 09:22:31 -04002789{
Andy Adamsonfc931582009-04-01 09:22:31 -04002790 struct compound_hdr hdr = {
Trond Myklebusta4432342010-06-16 09:52:27 -04002791 .minorversion = args->client->cl_mvops->minor_version,
Andy Adamsonfc931582009-04-01 09:22:31 -04002792 };
2793
Chuck Lever9f06c712010-12-14 14:59:18 +00002794 encode_compound_hdr(xdr, req, &hdr);
2795 encode_create_session(xdr, args, &hdr);
Andy Adamsonfc931582009-04-01 09:22:31 -04002796 encode_nops(&hdr);
Andy Adamsonfc931582009-04-01 09:22:31 -04002797}
2798
2799/*
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002800 * a DESTROY_SESSION request
2801 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002802static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
2803 struct xdr_stream *xdr,
2804 struct nfs4_session *session)
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002805{
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002806 struct compound_hdr hdr = {
Trond Myklebusta4432342010-06-16 09:52:27 -04002807 .minorversion = session->clp->cl_mvops->minor_version,
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002808 };
2809
Chuck Lever9f06c712010-12-14 14:59:18 +00002810 encode_compound_hdr(xdr, req, &hdr);
2811 encode_destroy_session(xdr, session, &hdr);
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002812 encode_nops(&hdr);
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002813}
2814
2815/*
Trond Myklebust66245532012-05-25 17:18:09 -04002816 * a DESTROY_CLIENTID request
2817 */
2818static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
2819 struct xdr_stream *xdr,
2820 struct nfs_client *clp)
2821{
2822 struct compound_hdr hdr = {
2823 .minorversion = clp->cl_mvops->minor_version,
2824 };
2825
2826 encode_compound_hdr(xdr, req, &hdr);
2827 encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
2828 encode_nops(&hdr);
2829}
2830
2831/*
Andy Adamsonfc01cea2009-04-01 09:22:36 -04002832 * a SEQUENCE request
2833 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002834static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
2835 struct nfs4_sequence_args *args)
Andy Adamsonfc01cea2009-04-01 09:22:36 -04002836{
Andy Adamsonfc01cea2009-04-01 09:22:36 -04002837 struct compound_hdr hdr = {
2838 .minorversion = nfs4_xdr_minorversion(args),
2839 };
2840
Chuck Lever9f06c712010-12-14 14:59:18 +00002841 encode_compound_hdr(xdr, req, &hdr);
2842 encode_sequence(xdr, args, &hdr);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04002843 encode_nops(&hdr);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04002844}
2845
2846/*
Andy Adamson2050f0c2009-04-01 09:22:30 -04002847 * a GET_LEASE_TIME request
2848 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002849static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
2850 struct xdr_stream *xdr,
2851 struct nfs4_get_lease_time_args *args)
Andy Adamson2050f0c2009-04-01 09:22:30 -04002852{
Andy Adamson2050f0c2009-04-01 09:22:30 -04002853 struct compound_hdr hdr = {
2854 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2855 };
Fred Isamandae100c2011-07-30 20:52:37 -04002856 const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
Andy Adamson2050f0c2009-04-01 09:22:30 -04002857
Chuck Lever9f06c712010-12-14 14:59:18 +00002858 encode_compound_hdr(xdr, req, &hdr);
2859 encode_sequence(xdr, &args->la_seq_args, &hdr);
2860 encode_putrootfh(xdr, &hdr);
2861 encode_fsinfo(xdr, lease_bitmap, &hdr);
Andy Adamson2050f0c2009-04-01 09:22:30 -04002862 encode_nops(&hdr);
Andy Adamson2050f0c2009-04-01 09:22:30 -04002863}
Ricardo Labiaga180197532009-12-05 16:08:40 -05002864
2865/*
2866 * a RECLAIM_COMPLETE request
2867 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002868static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
2869 struct xdr_stream *xdr,
2870 struct nfs41_reclaim_complete_args *args)
Ricardo Labiaga180197532009-12-05 16:08:40 -05002871{
Ricardo Labiaga180197532009-12-05 16:08:40 -05002872 struct compound_hdr hdr = {
2873 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2874 };
2875
Chuck Lever9f06c712010-12-14 14:59:18 +00002876 encode_compound_hdr(xdr, req, &hdr);
2877 encode_sequence(xdr, &args->seq_args, &hdr);
2878 encode_reclaim_complete(xdr, args, &hdr);
Ricardo Labiaga180197532009-12-05 16:08:40 -05002879 encode_nops(&hdr);
Ricardo Labiaga180197532009-12-05 16:08:40 -05002880}
2881
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002882/*
2883 * Encode GETDEVICEINFO request
2884 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002885static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
2886 struct xdr_stream *xdr,
2887 struct nfs4_getdeviceinfo_args *args)
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002888{
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002889 struct compound_hdr hdr = {
2890 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2891 };
2892
Chuck Lever9f06c712010-12-14 14:59:18 +00002893 encode_compound_hdr(xdr, req, &hdr);
2894 encode_sequence(xdr, &args->seq_args, &hdr);
2895 encode_getdeviceinfo(xdr, args, &hdr);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002896
2897 /* set up reply kvec. Subtract notification bitmap max size (2)
2898 * so that notification bitmap is put in xdr_buf tail */
2899 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2900 args->pdev->pages, args->pdev->pgbase,
2901 args->pdev->pglen);
2902
2903 encode_nops(&hdr);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002904}
2905
2906/*
2907 * Encode LAYOUTGET request
2908 */
Chuck Lever9f06c712010-12-14 14:59:18 +00002909static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
2910 struct xdr_stream *xdr,
2911 struct nfs4_layoutget_args *args)
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002912{
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002913 struct compound_hdr hdr = {
2914 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2915 };
2916
Chuck Lever9f06c712010-12-14 14:59:18 +00002917 encode_compound_hdr(xdr, req, &hdr);
2918 encode_sequence(xdr, &args->seq_args, &hdr);
2919 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2920 encode_layoutget(xdr, args, &hdr);
Weston Andros Adamson35124a02011-03-24 16:48:21 -04002921
2922 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
2923 args->layout.pages, 0, args->layout.pglen);
2924
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002925 encode_nops(&hdr);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002926}
Andy Adamson863a3c62011-03-23 13:27:54 +00002927
2928/*
2929 * Encode LAYOUTCOMMIT request
2930 */
Benny Halevycbe82602011-05-22 19:52:37 +03002931static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
2932 struct xdr_stream *xdr,
2933 struct nfs4_layoutcommit_args *args)
Andy Adamson863a3c62011-03-23 13:27:54 +00002934{
Benny Halevyac7db722011-05-22 19:53:48 +03002935 struct nfs4_layoutcommit_data *data =
2936 container_of(args, struct nfs4_layoutcommit_data, args);
Andy Adamson863a3c62011-03-23 13:27:54 +00002937 struct compound_hdr hdr = {
2938 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2939 };
2940
2941 encode_compound_hdr(xdr, req, &hdr);
2942 encode_sequence(xdr, &args->seq_args, &hdr);
2943 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
Benny Halevyac7db722011-05-22 19:53:48 +03002944 encode_layoutcommit(xdr, data->args.inode, args, &hdr);
Andy Adamson863a3c62011-03-23 13:27:54 +00002945 encode_getfattr(xdr, args->bitmask, &hdr);
2946 encode_nops(&hdr);
Benny Halevycbe82602011-05-22 19:52:37 +03002947}
2948
2949/*
2950 * Encode LAYOUTRETURN request
2951 */
2952static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
2953 struct xdr_stream *xdr,
2954 struct nfs4_layoutreturn_args *args)
2955{
2956 struct compound_hdr hdr = {
2957 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2958 };
2959
2960 encode_compound_hdr(xdr, req, &hdr);
2961 encode_sequence(xdr, &args->seq_args, &hdr);
2962 encode_putfh(xdr, NFS_FH(args->inode), &hdr);
2963 encode_layoutreturn(xdr, args, &hdr);
2964 encode_nops(&hdr);
Andy Adamson863a3c62011-03-23 13:27:54 +00002965}
Bryan Schumakerfca78d62011-06-02 14:59:07 -04002966
2967/*
2968 * Encode SECINFO_NO_NAME request
2969 */
2970static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
2971 struct xdr_stream *xdr,
2972 struct nfs41_secinfo_no_name_args *args)
2973{
2974 struct compound_hdr hdr = {
2975 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2976 };
2977
2978 encode_compound_hdr(xdr, req, &hdr);
2979 encode_sequence(xdr, &args->seq_args, &hdr);
2980 encode_putrootfh(xdr, &hdr);
2981 encode_secinfo_no_name(xdr, args, &hdr);
2982 encode_nops(&hdr);
2983 return 0;
2984}
Bryan Schumaker7d974792011-06-02 14:59:08 -04002985
2986/*
2987 * Encode TEST_STATEID request
2988 */
2989static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
2990 struct xdr_stream *xdr,
2991 struct nfs41_test_stateid_args *args)
2992{
2993 struct compound_hdr hdr = {
2994 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2995 };
2996
2997 encode_compound_hdr(xdr, req, &hdr);
2998 encode_sequence(xdr, &args->seq_args, &hdr);
2999 encode_test_stateid(xdr, args, &hdr);
3000 encode_nops(&hdr);
3001}
Bryan Schumaker9aeda352011-06-02 14:59:09 -04003002
3003/*
3004 * Encode FREE_STATEID request
3005 */
3006static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
3007 struct xdr_stream *xdr,
3008 struct nfs41_free_stateid_args *args)
3009{
3010 struct compound_hdr hdr = {
3011 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
3012 };
3013
3014 encode_compound_hdr(xdr, req, &hdr);
3015 encode_sequence(xdr, &args->seq_args, &hdr);
3016 encode_free_stateid(xdr, args, &hdr);
3017 encode_nops(&hdr);
3018}
Benny Halevy99fe60d2009-04-01 09:22:29 -04003019#endif /* CONFIG_NFS_V4_1 */
3020
Benny Halevy686841b2009-08-14 17:19:48 +03003021static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
3022{
3023 dprintk("nfs: %s: prematurely hit end of receive buffer. "
3024 "Remaining buffer length is %tu words.\n",
3025 func, xdr->end - xdr->p);
3026}
Linus Torvalds1da177e2005-04-16 15:20:36 -07003027
Trond Myklebust683b57b2006-06-09 09:34:22 -04003028static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003029{
Al Viro8687b632006-10-19 23:28:48 -07003030 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003031
Benny Halevyc0eae662009-08-14 17:20:14 +03003032 p = xdr_inline_decode(xdr, 4);
3033 if (unlikely(!p))
3034 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003035 *len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03003036 p = xdr_inline_decode(xdr, *len);
3037 if (unlikely(!p))
3038 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003039 *string = (char *)p;
3040 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003041out_overflow:
3042 print_overflow_msg(__func__, xdr);
3043 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003044}
3045
3046static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
3047{
Al Viro8687b632006-10-19 23:28:48 -07003048 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003049
Benny Halevyc0eae662009-08-14 17:20:14 +03003050 p = xdr_inline_decode(xdr, 8);
3051 if (unlikely(!p))
3052 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03003053 hdr->status = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03003054 hdr->taglen = be32_to_cpup(p);
Andy Adamson6c0195a2008-12-23 16:06:15 -05003055
Benny Halevyc0eae662009-08-14 17:20:14 +03003056 p = xdr_inline_decode(xdr, hdr->taglen + 4);
3057 if (unlikely(!p))
3058 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003059 hdr->tag = (char *)p;
3060 p += XDR_QUADLEN(hdr->taglen);
Benny Halevycccddf42009-08-14 17:20:19 +03003061 hdr->nops = be32_to_cpup(p);
Benny Halevyaadf6152008-12-23 16:06:13 -05003062 if (unlikely(hdr->nops < 1))
3063 return nfs4_stat_to_errno(hdr->status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003064 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003065out_overflow:
3066 print_overflow_msg(__func__, xdr);
3067 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003068}
3069
Trond Myklebustc7848f62013-12-04 17:39:23 -05003070static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
3071 int *nfs_retval)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003072{
Al Viro8687b632006-10-19 23:28:48 -07003073 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003074 uint32_t opnum;
3075 int32_t nfserr;
3076
Benny Halevyc0eae662009-08-14 17:20:14 +03003077 p = xdr_inline_decode(xdr, 8);
3078 if (unlikely(!p))
3079 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03003080 opnum = be32_to_cpup(p++);
Trond Myklebustc7848f62013-12-04 17:39:23 -05003081 if (unlikely(opnum != expected))
3082 goto out_bad_operation;
Benny Halevycccddf42009-08-14 17:20:19 +03003083 nfserr = be32_to_cpup(p);
Trond Myklebustc7848f62013-12-04 17:39:23 -05003084 if (nfserr == NFS_OK)
3085 *nfs_retval = 0;
3086 else
3087 *nfs_retval = nfs4_stat_to_errno(nfserr);
3088 return true;
3089out_bad_operation:
3090 dprintk("nfs: Server returned operation"
3091 " %d but we issued a request for %d\n",
3092 opnum, expected);
3093 *nfs_retval = -EREMOTEIO;
3094 return false;
Benny Halevyc0eae662009-08-14 17:20:14 +03003095out_overflow:
3096 print_overflow_msg(__func__, xdr);
Trond Myklebustc7848f62013-12-04 17:39:23 -05003097 *nfs_retval = -EIO;
3098 return false;
3099}
3100
3101static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
3102{
3103 int retval;
3104
3105 __decode_op_hdr(xdr, expected, &retval);
3106 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003107}
3108
3109/* Dummy routine */
David Howellsadfa6f92006-08-22 20:06:08 -04003110static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003111{
Al Viro8687b632006-10-19 23:28:48 -07003112 __be32 *p;
Trond Myklebust683b57b2006-06-09 09:34:22 -04003113 unsigned int strlen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003114 char *str;
3115
Benny Halevyc0eae662009-08-14 17:20:14 +03003116 p = xdr_inline_decode(xdr, 12);
3117 if (likely(p))
3118 return decode_opaque_inline(xdr, &strlen, &str);
3119 print_overflow_msg(__func__, xdr);
3120 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003121}
3122
3123static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
3124{
Al Viro8687b632006-10-19 23:28:48 -07003125 uint32_t bmlen;
3126 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003127
Benny Halevyc0eae662009-08-14 17:20:14 +03003128 p = xdr_inline_decode(xdr, 4);
3129 if (unlikely(!p))
3130 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003131 bmlen = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003132
Fred Isamandae100c2011-07-30 20:52:37 -04003133 bitmap[0] = bitmap[1] = bitmap[2] = 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003134 p = xdr_inline_decode(xdr, (bmlen << 2));
3135 if (unlikely(!p))
3136 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003137 if (bmlen > 0) {
Benny Halevy6f723f72009-08-14 17:19:37 +03003138 bitmap[0] = be32_to_cpup(p++);
Fred Isamandae100c2011-07-30 20:52:37 -04003139 if (bmlen > 1) {
3140 bitmap[1] = be32_to_cpup(p++);
3141 if (bmlen > 2)
3142 bitmap[2] = be32_to_cpup(p);
3143 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003144 }
3145 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003146out_overflow:
3147 print_overflow_msg(__func__, xdr);
3148 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003149}
3150
Trond Myklebust256e48b2012-06-21 11:18:13 -04003151static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003152{
Al Viro8687b632006-10-19 23:28:48 -07003153 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003154
Benny Halevyc0eae662009-08-14 17:20:14 +03003155 p = xdr_inline_decode(xdr, 4);
3156 if (unlikely(!p))
3157 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003158 *attrlen = be32_to_cpup(p);
Trond Myklebust256e48b2012-06-21 11:18:13 -04003159 *savep = xdr_stream_pos(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003160 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003161out_overflow:
3162 print_overflow_msg(__func__, xdr);
3163 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003164}
3165
3166static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
3167{
3168 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
Roman Borisov3388bff2010-10-13 16:54:51 +04003169 int ret;
3170 ret = decode_attr_bitmap(xdr, bitmask);
3171 if (unlikely(ret < 0))
3172 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003173 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
3174 } else
Fred Isamandae100c2011-07-30 20:52:37 -04003175 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3176 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3177 bitmask[0], bitmask[1], bitmask[2]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003178 return 0;
3179}
3180
3181static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
3182{
Al Viro8687b632006-10-19 23:28:48 -07003183 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003184 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003185
3186 *type = 0;
3187 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
3188 return -EIO;
3189 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003190 p = xdr_inline_decode(xdr, 4);
3191 if (unlikely(!p))
3192 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003193 *type = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003194 if (*type < NF4REG || *type > NF4NAMEDATTR) {
Harvey Harrison3110ff82008-05-02 13:42:44 -07003195 dprintk("%s: bad type %d\n", __func__, *type);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003196 return -EIO;
3197 }
3198 bitmap[0] &= ~FATTR4_WORD0_TYPE;
Trond Myklebust409924e2009-03-11 14:10:27 -04003199 ret = NFS_ATTR_FATTR_TYPE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003200 }
Trond Myklebustbca79472009-03-11 14:10:26 -04003201 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
Trond Myklebust409924e2009-03-11 14:10:27 -04003202 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003203out_overflow:
3204 print_overflow_msg(__func__, xdr);
3205 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003206}
3207
Chuck Lever264e6352012-03-01 17:02:05 -05003208static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
3209 uint32_t *bitmap, uint32_t *type)
3210{
3211 __be32 *p;
3212
3213 *type = 0;
3214 if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
3215 return -EIO;
3216 if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
3217 p = xdr_inline_decode(xdr, 4);
3218 if (unlikely(!p))
3219 goto out_overflow;
3220 *type = be32_to_cpup(p);
3221 bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
3222 }
3223 dprintk("%s: expire type=0x%x\n", __func__, *type);
3224 return 0;
3225out_overflow:
3226 print_overflow_msg(__func__, xdr);
3227 return -EIO;
3228}
3229
Linus Torvalds1da177e2005-04-16 15:20:36 -07003230static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
3231{
Al Viro8687b632006-10-19 23:28:48 -07003232 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003233 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003234
3235 *change = 0;
3236 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
3237 return -EIO;
3238 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003239 p = xdr_inline_decode(xdr, 8);
3240 if (unlikely(!p))
3241 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003242 xdr_decode_hyper(p, change);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003243 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
Trond Myklebust409924e2009-03-11 14:10:27 -04003244 ret = NFS_ATTR_FATTR_CHANGE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003245 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003246 dprintk("%s: change attribute=%Lu\n", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003247 (unsigned long long)*change);
Trond Myklebust409924e2009-03-11 14:10:27 -04003248 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003249out_overflow:
3250 print_overflow_msg(__func__, xdr);
3251 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003252}
3253
3254static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
3255{
Al Viro8687b632006-10-19 23:28:48 -07003256 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003257 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003258
3259 *size = 0;
3260 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
3261 return -EIO;
3262 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003263 p = xdr_inline_decode(xdr, 8);
3264 if (unlikely(!p))
3265 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003266 xdr_decode_hyper(p, size);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003267 bitmap[0] &= ~FATTR4_WORD0_SIZE;
Trond Myklebust409924e2009-03-11 14:10:27 -04003268 ret = NFS_ATTR_FATTR_SIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003269 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003270 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
Trond Myklebust409924e2009-03-11 14:10:27 -04003271 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003272out_overflow:
3273 print_overflow_msg(__func__, xdr);
3274 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003275}
3276
3277static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3278{
Al Viro8687b632006-10-19 23:28:48 -07003279 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003280
3281 *res = 0;
3282 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
3283 return -EIO;
3284 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003285 p = xdr_inline_decode(xdr, 4);
3286 if (unlikely(!p))
3287 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003288 *res = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003289 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
3290 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003291 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003292 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003293out_overflow:
3294 print_overflow_msg(__func__, xdr);
3295 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003296}
3297
3298static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3299{
Al Viro8687b632006-10-19 23:28:48 -07003300 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003301
3302 *res = 0;
3303 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
3304 return -EIO;
3305 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003306 p = xdr_inline_decode(xdr, 4);
3307 if (unlikely(!p))
3308 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003309 *res = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003310 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
3311 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003312 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003313 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003314out_overflow:
3315 print_overflow_msg(__func__, xdr);
3316 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003317}
3318
Trond Myklebust8b4bdcf2006-06-09 09:34:19 -04003319static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003320{
Al Viro8687b632006-10-19 23:28:48 -07003321 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003322 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003323
3324 fsid->major = 0;
3325 fsid->minor = 0;
3326 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
3327 return -EIO;
3328 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003329 p = xdr_inline_decode(xdr, 16);
3330 if (unlikely(!p))
3331 goto out_overflow;
Benny Halevy3ceb4db2009-08-14 17:19:41 +03003332 p = xdr_decode_hyper(p, &fsid->major);
Benny Halevycccddf42009-08-14 17:20:19 +03003333 xdr_decode_hyper(p, &fsid->minor);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003334 bitmap[0] &= ~FATTR4_WORD0_FSID;
Trond Myklebust409924e2009-03-11 14:10:27 -04003335 ret = NFS_ATTR_FATTR_FSID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003336 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003337 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003338 (unsigned long long)fsid->major,
3339 (unsigned long long)fsid->minor);
Trond Myklebust409924e2009-03-11 14:10:27 -04003340 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003341out_overflow:
3342 print_overflow_msg(__func__, xdr);
3343 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003344}
3345
3346static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3347{
Al Viro8687b632006-10-19 23:28:48 -07003348 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003349
3350 *res = 60;
3351 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
3352 return -EIO;
3353 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003354 p = xdr_inline_decode(xdr, 4);
3355 if (unlikely(!p))
3356 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003357 *res = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003358 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
3359 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003360 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003361 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003362out_overflow:
3363 print_overflow_msg(__func__, xdr);
3364 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003365}
3366
Trond Myklebustee7b75f2011-06-16 13:15:41 -04003367static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
Bryan Schumakerae42c702010-10-21 16:33:17 -04003368{
3369 __be32 *p;
3370
3371 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
3372 return -EIO;
3373 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
3374 p = xdr_inline_decode(xdr, 4);
3375 if (unlikely(!p))
3376 goto out_overflow;
3377 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
Trond Myklebustee7b75f2011-06-16 13:15:41 -04003378 *res = -be32_to_cpup(p);
Bryan Schumakerae42c702010-10-21 16:33:17 -04003379 }
3380 return 0;
3381out_overflow:
3382 print_overflow_msg(__func__, xdr);
3383 return -EIO;
3384}
3385
Kinglong Mee8c612822015-08-26 21:12:58 +08003386static int decode_attr_exclcreat_supported(struct xdr_stream *xdr,
3387 uint32_t *bitmap, uint32_t *bitmask)
3388{
3389 if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) {
3390 int ret;
3391 ret = decode_attr_bitmap(xdr, bitmask);
3392 if (unlikely(ret < 0))
3393 return ret;
3394 bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT;
3395 } else
3396 bitmask[0] = bitmask[1] = bitmask[2] = 0;
3397 dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
3398 bitmask[0], bitmask[1], bitmask[2]);
3399 return 0;
3400}
3401
Bryan Schumakerae42c702010-10-21 16:33:17 -04003402static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3403{
3404 __be32 *p;
3405 int len;
3406
Trond Myklebust7ad07352010-10-23 15:34:20 -04003407 if (fh != NULL)
3408 memset(fh, 0, sizeof(*fh));
Bryan Schumakerae42c702010-10-21 16:33:17 -04003409
3410 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3411 return -EIO;
3412 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3413 p = xdr_inline_decode(xdr, 4);
3414 if (unlikely(!p))
3415 goto out_overflow;
3416 len = be32_to_cpup(p);
3417 if (len > NFS4_FHSIZE)
3418 return -EIO;
Bryan Schumakerae42c702010-10-21 16:33:17 -04003419 p = xdr_inline_decode(xdr, len);
3420 if (unlikely(!p))
3421 goto out_overflow;
Trond Myklebust7ad07352010-10-23 15:34:20 -04003422 if (fh != NULL) {
3423 memcpy(fh->data, p, len);
3424 fh->size = len;
3425 }
Bryan Schumakerae42c702010-10-21 16:33:17 -04003426 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3427 }
3428 return 0;
3429out_overflow:
3430 print_overflow_msg(__func__, xdr);
3431 return -EIO;
3432}
3433
Linus Torvalds1da177e2005-04-16 15:20:36 -07003434static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3435{
Al Viro8687b632006-10-19 23:28:48 -07003436 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003437
Malahal Nainenia1800ac2014-01-27 15:31:09 -06003438 *res = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003439 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3440 return -EIO;
3441 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003442 p = xdr_inline_decode(xdr, 4);
3443 if (unlikely(!p))
3444 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003445 *res = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003446 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3447 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003448 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003449 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003450out_overflow:
3451 print_overflow_msg(__func__, xdr);
3452 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003453}
3454
3455static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3456{
Al Viro8687b632006-10-19 23:28:48 -07003457 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003458 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003459
3460 *fileid = 0;
3461 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3462 return -EIO;
3463 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003464 p = xdr_inline_decode(xdr, 8);
3465 if (unlikely(!p))
3466 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003467 xdr_decode_hyper(p, fileid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003468 bitmap[0] &= ~FATTR4_WORD0_FILEID;
Trond Myklebust409924e2009-03-11 14:10:27 -04003469 ret = NFS_ATTR_FATTR_FILEID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003470 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003471 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
Trond Myklebust409924e2009-03-11 14:10:27 -04003472 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003473out_overflow:
3474 print_overflow_msg(__func__, xdr);
3475 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003476}
3477
Manoj Naik99baf622006-06-09 09:34:24 -04003478static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3479{
Al Viro8687b632006-10-19 23:28:48 -07003480 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003481 int ret = 0;
Manoj Naik99baf622006-06-09 09:34:24 -04003482
3483 *fileid = 0;
3484 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3485 return -EIO;
3486 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003487 p = xdr_inline_decode(xdr, 8);
3488 if (unlikely(!p))
3489 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003490 xdr_decode_hyper(p, fileid);
Manoj Naik99baf622006-06-09 09:34:24 -04003491 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
Trond Myklebust28331a42011-04-27 13:47:52 -04003492 ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
Manoj Naik99baf622006-06-09 09:34:24 -04003493 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003494 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
Trond Myklebust409924e2009-03-11 14:10:27 -04003495 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003496out_overflow:
3497 print_overflow_msg(__func__, xdr);
3498 return -EIO;
Manoj Naik99baf622006-06-09 09:34:24 -04003499}
3500
Linus Torvalds1da177e2005-04-16 15:20:36 -07003501static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3502{
Al Viro8687b632006-10-19 23:28:48 -07003503 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003504 int status = 0;
3505
3506 *res = 0;
3507 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3508 return -EIO;
3509 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003510 p = xdr_inline_decode(xdr, 8);
3511 if (unlikely(!p))
3512 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003513 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003514 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3515 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003516 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003517 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003518out_overflow:
3519 print_overflow_msg(__func__, xdr);
3520 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003521}
3522
3523static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3524{
Al Viro8687b632006-10-19 23:28:48 -07003525 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003526 int status = 0;
3527
3528 *res = 0;
3529 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3530 return -EIO;
3531 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003532 p = xdr_inline_decode(xdr, 8);
3533 if (unlikely(!p))
3534 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003535 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003536 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3537 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003538 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003539 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003540out_overflow:
3541 print_overflow_msg(__func__, xdr);
3542 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003543}
3544
3545static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3546{
Al Viro8687b632006-10-19 23:28:48 -07003547 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003548 int status = 0;
3549
3550 *res = 0;
3551 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3552 return -EIO;
3553 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003554 p = xdr_inline_decode(xdr, 8);
3555 if (unlikely(!p))
3556 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003557 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003558 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3559 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003560 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003561 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003562out_overflow:
3563 print_overflow_msg(__func__, xdr);
3564 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003565}
3566
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003567static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3568{
Chuck Lever464ad6b2007-10-26 13:32:08 -04003569 u32 n;
Al Viro8687b632006-10-19 23:28:48 -07003570 __be32 *p;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003571 int status = 0;
3572
Benny Halevyc0eae662009-08-14 17:20:14 +03003573 p = xdr_inline_decode(xdr, 4);
3574 if (unlikely(!p))
3575 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003576 n = be32_to_cpup(p);
Andy Adamson33a43f22006-06-09 09:34:30 -04003577 if (n == 0)
3578 goto root_path;
Chuck Lever02a29762012-03-01 17:00:31 -05003579 dprintk("pathname4: ");
Trond Myklebust809b4262013-03-27 11:54:45 -04003580 if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
3581 dprintk("cannot parse %d components in path\n", n);
3582 goto out_eio;
3583 }
3584 for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003585 struct nfs4_string *component = &path->components[path->ncomponents];
3586 status = decode_opaque_inline(xdr, &component->len, &component->data);
3587 if (unlikely(status != 0))
3588 goto out_eio;
Trond Myklebust95a13f72012-03-14 21:55:01 -04003589 ifdebug (XDR)
Chuck Lever02a29762012-03-01 17:00:31 -05003590 pr_cont("%s%.*s ",
3591 (path->ncomponents != n ? "/ " : ""),
3592 component->len, component->data);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003593 }
3594out:
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003595 return status;
Andy Adamson33a43f22006-06-09 09:34:30 -04003596root_path:
3597/* a root pathname is sent as a zero component4 */
3598 path->ncomponents = 1;
3599 path->components[0].len=0;
3600 path->components[0].data=NULL;
Chuck Lever02a29762012-03-01 17:00:31 -05003601 dprintk("pathname4: /\n");
Andy Adamson33a43f22006-06-09 09:34:30 -04003602 goto out;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003603out_eio:
3604 dprintk(" status %d", status);
3605 status = -EIO;
3606 goto out;
Benny Halevyc0eae662009-08-14 17:20:14 +03003607out_overflow:
3608 print_overflow_msg(__func__, xdr);
3609 return -EIO;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003610}
3611
3612static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
Trond Myklebust683b57b2006-06-09 09:34:22 -04003613{
3614 int n;
Al Viro8687b632006-10-19 23:28:48 -07003615 __be32 *p;
Trond Myklebust683b57b2006-06-09 09:34:22 -04003616 int status = -EIO;
3617
3618 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3619 goto out;
3620 status = 0;
3621 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3622 goto out;
Kinglong Meef54423a2015-11-18 10:39:26 +08003623 bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS;
Trond Myklebust8b7e3f42012-01-30 15:43:56 -05003624 status = -EIO;
3625 /* Ignore borken servers that return unrequested attrs */
3626 if (unlikely(res == NULL))
3627 goto out;
Chuck Lever02a29762012-03-01 17:00:31 -05003628 dprintk("%s: fsroot:\n", __func__);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003629 status = decode_pathname(xdr, &res->fs_path);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003630 if (unlikely(status != 0))
3631 goto out;
Benny Halevyc0eae662009-08-14 17:20:14 +03003632 p = xdr_inline_decode(xdr, 4);
3633 if (unlikely(!p))
3634 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003635 n = be32_to_cpup(p);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003636 if (n <= 0)
3637 goto out_eio;
Trond Myklebust809b4262013-03-27 11:54:45 -04003638 for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
Chuck Lever464ad6b2007-10-26 13:32:08 -04003639 u32 m;
Trond Myklebust809b4262013-03-27 11:54:45 -04003640 struct nfs4_fs_location *loc;
Trond Myklebust683b57b2006-06-09 09:34:22 -04003641
Trond Myklebust809b4262013-03-27 11:54:45 -04003642 if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
3643 break;
3644 loc = &res->locations[res->nlocations];
Benny Halevyc0eae662009-08-14 17:20:14 +03003645 p = xdr_inline_decode(xdr, 4);
3646 if (unlikely(!p))
3647 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003648 m = be32_to_cpup(p);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003649
Chuck Lever02a29762012-03-01 17:00:31 -05003650 dprintk("%s: servers:\n", __func__);
Trond Myklebust809b4262013-03-27 11:54:45 -04003651 for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
3652 struct nfs4_string *server;
3653
3654 if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
Chuck Lever464ad6b2007-10-26 13:32:08 -04003655 unsigned int i;
3656 dprintk("%s: using first %u of %u servers "
3657 "returned for location %u\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003658 __func__,
Chuck Lever464ad6b2007-10-26 13:32:08 -04003659 NFS4_FS_LOCATION_MAXSERVERS,
3660 m, res->nlocations);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003661 for (i = loc->nservers; i < m; i++) {
Trond Myklebust2e42c3e2007-05-14 17:20:41 -04003662 unsigned int len;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003663 char *data;
3664 status = decode_opaque_inline(xdr, &len, &data);
3665 if (unlikely(status != 0))
3666 goto out_eio;
3667 }
Trond Myklebust809b4262013-03-27 11:54:45 -04003668 break;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003669 }
Trond Myklebust809b4262013-03-27 11:54:45 -04003670 server = &loc->servers[loc->nservers];
3671 status = decode_opaque_inline(xdr, &server->len, &server->data);
3672 if (unlikely(status != 0))
3673 goto out_eio;
3674 dprintk("%s ", server->data);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003675 }
3676 status = decode_pathname(xdr, &loc->rootpath);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003677 if (unlikely(status != 0))
3678 goto out_eio;
Trond Myklebust683b57b2006-06-09 09:34:22 -04003679 }
Trond Myklebust409924e2009-03-11 14:10:27 -04003680 if (res->nlocations != 0)
Chuck Lever81934dd2012-03-01 17:01:57 -05003681 status = NFS_ATTR_FATTR_V4_LOCATIONS;
Trond Myklebust683b57b2006-06-09 09:34:22 -04003682out:
Harvey Harrison3110ff82008-05-02 13:42:44 -07003683 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003684 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003685out_overflow:
3686 print_overflow_msg(__func__, xdr);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003687out_eio:
3688 status = -EIO;
3689 goto out;
3690}
3691
Linus Torvalds1da177e2005-04-16 15:20:36 -07003692static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3693{
Al Viro8687b632006-10-19 23:28:48 -07003694 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003695 int status = 0;
3696
3697 *res = 0;
3698 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3699 return -EIO;
3700 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003701 p = xdr_inline_decode(xdr, 8);
3702 if (unlikely(!p))
3703 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003704 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003705 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3706 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003707 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003708 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003709out_overflow:
3710 print_overflow_msg(__func__, xdr);
3711 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003712}
3713
3714static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3715{
Al Viro8687b632006-10-19 23:28:48 -07003716 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003717 int status = 0;
3718
3719 *maxlink = 1;
3720 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3721 return -EIO;
3722 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003723 p = xdr_inline_decode(xdr, 4);
3724 if (unlikely(!p))
3725 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003726 *maxlink = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003727 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3728 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003729 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003730 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003731out_overflow:
3732 print_overflow_msg(__func__, xdr);
3733 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003734}
3735
3736static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3737{
Al Viro8687b632006-10-19 23:28:48 -07003738 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003739 int status = 0;
3740
3741 *maxname = 1024;
3742 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3743 return -EIO;
3744 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003745 p = xdr_inline_decode(xdr, 4);
3746 if (unlikely(!p))
3747 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003748 *maxname = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003749 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3750 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003751 dprintk("%s: maxname=%u\n", __func__, *maxname);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003752 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003753out_overflow:
3754 print_overflow_msg(__func__, xdr);
3755 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003756}
3757
3758static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3759{
Al Viro8687b632006-10-19 23:28:48 -07003760 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003761 int status = 0;
3762
3763 *res = 1024;
3764 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3765 return -EIO;
3766 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3767 uint64_t maxread;
Benny Halevyc0eae662009-08-14 17:20:14 +03003768 p = xdr_inline_decode(xdr, 8);
3769 if (unlikely(!p))
3770 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003771 xdr_decode_hyper(p, &maxread);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003772 if (maxread > 0x7FFFFFFF)
3773 maxread = 0x7FFFFFFF;
3774 *res = (uint32_t)maxread;
3775 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3776 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003777 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003778 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003779out_overflow:
3780 print_overflow_msg(__func__, xdr);
3781 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003782}
3783
3784static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3785{
Al Viro8687b632006-10-19 23:28:48 -07003786 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003787 int status = 0;
3788
3789 *res = 1024;
3790 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3791 return -EIO;
3792 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3793 uint64_t maxwrite;
Benny Halevyc0eae662009-08-14 17:20:14 +03003794 p = xdr_inline_decode(xdr, 8);
3795 if (unlikely(!p))
3796 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003797 xdr_decode_hyper(p, &maxwrite);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003798 if (maxwrite > 0x7FFFFFFF)
3799 maxwrite = 0x7FFFFFFF;
3800 *res = (uint32_t)maxwrite;
3801 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3802 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003803 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003804 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003805out_overflow:
3806 print_overflow_msg(__func__, xdr);
3807 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003808}
3809
Trond Myklebustbca79472009-03-11 14:10:26 -04003810static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003811{
Trond Myklebustbca79472009-03-11 14:10:26 -04003812 uint32_t tmp;
Al Viro8687b632006-10-19 23:28:48 -07003813 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003814 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003815
3816 *mode = 0;
3817 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3818 return -EIO;
3819 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003820 p = xdr_inline_decode(xdr, 4);
3821 if (unlikely(!p))
3822 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003823 tmp = be32_to_cpup(p);
Trond Myklebustbca79472009-03-11 14:10:26 -04003824 *mode = tmp & ~S_IFMT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003825 bitmap[1] &= ~FATTR4_WORD1_MODE;
Trond Myklebust409924e2009-03-11 14:10:27 -04003826 ret = NFS_ATTR_FATTR_MODE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003827 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003828 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
Trond Myklebust409924e2009-03-11 14:10:27 -04003829 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003830out_overflow:
3831 print_overflow_msg(__func__, xdr);
3832 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003833}
3834
3835static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3836{
Al Viro8687b632006-10-19 23:28:48 -07003837 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003838 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003839
3840 *nlink = 1;
3841 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3842 return -EIO;
3843 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003844 p = xdr_inline_decode(xdr, 4);
3845 if (unlikely(!p))
3846 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003847 *nlink = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003848 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
Trond Myklebust409924e2009-03-11 14:10:27 -04003849 ret = NFS_ATTR_FATTR_NLINK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003850 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003851 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
Trond Myklebust409924e2009-03-11 14:10:27 -04003852 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003853out_overflow:
3854 print_overflow_msg(__func__, xdr);
3855 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003856}
3857
Trond Myklebust80e52ac2009-08-09 15:06:19 -04003858static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
Eric W. Biedermane5782072013-02-01 14:22:02 -08003859 const struct nfs_server *server, kuid_t *uid,
Trond Myklebust6926afd2012-01-07 13:22:46 -05003860 struct nfs4_string *owner_name)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003861{
Al Viro8687b632006-10-19 23:28:48 -07003862 uint32_t len;
3863 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003864 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003865
Eric W. Biedermane5782072013-02-01 14:22:02 -08003866 *uid = make_kuid(&init_user_ns, -2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003867 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3868 return -EIO;
3869 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003870 p = xdr_inline_decode(xdr, 4);
3871 if (unlikely(!p))
3872 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003873 len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03003874 p = xdr_inline_decode(xdr, len);
3875 if (unlikely(!p))
3876 goto out_overflow;
Trond Myklebust6926afd2012-01-07 13:22:46 -05003877 if (owner_name != NULL) {
3878 owner_name->data = kmemdup(p, len, GFP_NOWAIT);
3879 if (owner_name->data != NULL) {
3880 owner_name->len = len;
3881 ret = NFS_ATTR_FATTR_OWNER_NAME;
3882 }
Trond Myklebust80e52ac2009-08-09 15:06:19 -04003883 } else if (len < XDR_MAX_NETOBJ) {
Trond Myklebuste4fd72a2011-02-22 15:44:31 -08003884 if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
Trond Myklebust409924e2009-03-11 14:10:27 -04003885 ret = NFS_ATTR_FATTR_OWNER;
3886 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07003887 dprintk("%s: nfs_map_name_to_uid failed!\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003888 __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003889 } else
Chuck Leverfe82a182007-09-11 18:01:10 -04003890 dprintk("%s: name too long (%u)!\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003891 __func__, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003892 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3893 }
Eric W. Biedermane5782072013-02-01 14:22:02 -08003894 dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
Trond Myklebust409924e2009-03-11 14:10:27 -04003895 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003896out_overflow:
3897 print_overflow_msg(__func__, xdr);
3898 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003899}
3900
Trond Myklebust80e52ac2009-08-09 15:06:19 -04003901static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
Eric W. Biedermane5782072013-02-01 14:22:02 -08003902 const struct nfs_server *server, kgid_t *gid,
Trond Myklebust6926afd2012-01-07 13:22:46 -05003903 struct nfs4_string *group_name)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003904{
Al Viro8687b632006-10-19 23:28:48 -07003905 uint32_t len;
3906 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003907 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003908
Eric W. Biedermane5782072013-02-01 14:22:02 -08003909 *gid = make_kgid(&init_user_ns, -2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003910 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3911 return -EIO;
3912 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003913 p = xdr_inline_decode(xdr, 4);
3914 if (unlikely(!p))
3915 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003916 len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03003917 p = xdr_inline_decode(xdr, len);
3918 if (unlikely(!p))
3919 goto out_overflow;
Trond Myklebust6926afd2012-01-07 13:22:46 -05003920 if (group_name != NULL) {
3921 group_name->data = kmemdup(p, len, GFP_NOWAIT);
3922 if (group_name->data != NULL) {
3923 group_name->len = len;
3924 ret = NFS_ATTR_FATTR_GROUP_NAME;
3925 }
Trond Myklebust80e52ac2009-08-09 15:06:19 -04003926 } else if (len < XDR_MAX_NETOBJ) {
Trond Myklebuste4fd72a2011-02-22 15:44:31 -08003927 if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
Trond Myklebust409924e2009-03-11 14:10:27 -04003928 ret = NFS_ATTR_FATTR_GROUP;
3929 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07003930 dprintk("%s: nfs_map_group_to_gid failed!\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003931 __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003932 } else
Chuck Leverfe82a182007-09-11 18:01:10 -04003933 dprintk("%s: name too long (%u)!\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003934 __func__, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003935 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3936 }
Eric W. Biedermane5782072013-02-01 14:22:02 -08003937 dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
Trond Myklebust409924e2009-03-11 14:10:27 -04003938 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003939out_overflow:
3940 print_overflow_msg(__func__, xdr);
3941 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003942}
3943
3944static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3945{
Al Viro8687b632006-10-19 23:28:48 -07003946 uint32_t major = 0, minor = 0;
3947 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003948 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003949
3950 *rdev = MKDEV(0,0);
3951 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3952 return -EIO;
3953 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3954 dev_t tmp;
3955
Benny Halevyc0eae662009-08-14 17:20:14 +03003956 p = xdr_inline_decode(xdr, 8);
3957 if (unlikely(!p))
3958 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03003959 major = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03003960 minor = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003961 tmp = MKDEV(major, minor);
3962 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3963 *rdev = tmp;
3964 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
Trond Myklebust409924e2009-03-11 14:10:27 -04003965 ret = NFS_ATTR_FATTR_RDEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003966 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003967 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
Trond Myklebust409924e2009-03-11 14:10:27 -04003968 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003969out_overflow:
3970 print_overflow_msg(__func__, xdr);
3971 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003972}
3973
3974static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3975{
Al Viro8687b632006-10-19 23:28:48 -07003976 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003977 int status = 0;
3978
3979 *res = 0;
3980 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3981 return -EIO;
3982 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003983 p = xdr_inline_decode(xdr, 8);
3984 if (unlikely(!p))
3985 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003986 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003987 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3988 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003989 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003990 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003991out_overflow:
3992 print_overflow_msg(__func__, xdr);
3993 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003994}
3995
3996static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3997{
Al Viro8687b632006-10-19 23:28:48 -07003998 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003999 int status = 0;
4000
4001 *res = 0;
4002 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
4003 return -EIO;
4004 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03004005 p = xdr_inline_decode(xdr, 8);
4006 if (unlikely(!p))
4007 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004008 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004009 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
4010 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07004011 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004012 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004013out_overflow:
4014 print_overflow_msg(__func__, xdr);
4015 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004016}
4017
4018static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
4019{
Al Viro8687b632006-10-19 23:28:48 -07004020 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004021 int status = 0;
4022
4023 *res = 0;
4024 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
4025 return -EIO;
4026 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03004027 p = xdr_inline_decode(xdr, 8);
4028 if (unlikely(!p))
4029 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004030 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004031 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
4032 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07004033 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004034 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004035out_overflow:
4036 print_overflow_msg(__func__, xdr);
4037 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004038}
4039
4040static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
4041{
Al Viro8687b632006-10-19 23:28:48 -07004042 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04004043 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004044
4045 *used = 0;
4046 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
4047 return -EIO;
4048 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03004049 p = xdr_inline_decode(xdr, 8);
4050 if (unlikely(!p))
4051 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004052 xdr_decode_hyper(p, used);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004053 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
Trond Myklebust409924e2009-03-11 14:10:27 -04004054 ret = NFS_ATTR_FATTR_SPACE_USED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004055 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07004056 dprintk("%s: space used=%Lu\n", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004057 (unsigned long long)*used);
Trond Myklebust409924e2009-03-11 14:10:27 -04004058 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03004059out_overflow:
4060 print_overflow_msg(__func__, xdr);
4061 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004062}
4063
4064static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
4065{
Al Viro8687b632006-10-19 23:28:48 -07004066 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004067 uint64_t sec;
4068 uint32_t nsec;
4069
Benny Halevyc0eae662009-08-14 17:20:14 +03004070 p = xdr_inline_decode(xdr, 12);
4071 if (unlikely(!p))
4072 goto out_overflow;
Benny Halevy3ceb4db2009-08-14 17:19:41 +03004073 p = xdr_decode_hyper(p, &sec);
Benny Halevycccddf42009-08-14 17:20:19 +03004074 nsec = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004075 time->tv_sec = (time_t)sec;
4076 time->tv_nsec = (long)nsec;
4077 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004078out_overflow:
4079 print_overflow_msg(__func__, xdr);
4080 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004081}
4082
4083static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4084{
4085 int status = 0;
4086
4087 time->tv_sec = 0;
4088 time->tv_nsec = 0;
4089 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
4090 return -EIO;
4091 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
4092 status = decode_attr_time(xdr, time);
Trond Myklebust409924e2009-03-11 14:10:27 -04004093 if (status == 0)
4094 status = NFS_ATTR_FATTR_ATIME;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004095 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
4096 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07004097 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004098 return status;
4099}
4100
4101static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4102{
4103 int status = 0;
4104
4105 time->tv_sec = 0;
4106 time->tv_nsec = 0;
4107 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
4108 return -EIO;
4109 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
4110 status = decode_attr_time(xdr, time);
Trond Myklebust409924e2009-03-11 14:10:27 -04004111 if (status == 0)
4112 status = NFS_ATTR_FATTR_CTIME;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004113 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
4114 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07004115 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004116 return status;
4117}
4118
Ricardo Labiaga55b6e772010-10-12 16:30:06 -07004119static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
4120 struct timespec *time)
4121{
4122 int status = 0;
4123
4124 time->tv_sec = 0;
4125 time->tv_nsec = 0;
4126 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
4127 return -EIO;
4128 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
4129 status = decode_attr_time(xdr, time);
4130 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
4131 }
4132 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
4133 (long)time->tv_nsec);
4134 return status;
4135}
4136
David Quigleyaa9c2662013-05-22 12:50:44 -04004137static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
4138 struct nfs4_label *label)
4139{
4140 uint32_t pi = 0;
4141 uint32_t lfs = 0;
4142 __u32 len;
4143 __be32 *p;
4144 int status = 0;
4145
4146 if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
4147 return -EIO;
4148 if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
4149 p = xdr_inline_decode(xdr, 4);
4150 if (unlikely(!p))
4151 goto out_overflow;
4152 lfs = be32_to_cpup(p++);
4153 p = xdr_inline_decode(xdr, 4);
4154 if (unlikely(!p))
4155 goto out_overflow;
4156 pi = be32_to_cpup(p++);
4157 p = xdr_inline_decode(xdr, 4);
4158 if (unlikely(!p))
4159 goto out_overflow;
4160 len = be32_to_cpup(p++);
4161 p = xdr_inline_decode(xdr, len);
4162 if (unlikely(!p))
4163 goto out_overflow;
4164 if (len < NFS4_MAXLABELLEN) {
4165 if (label) {
4166 memcpy(label->label, p, len);
4167 label->len = len;
4168 label->pi = pi;
4169 label->lfs = lfs;
4170 status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
4171 }
4172 bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
4173 } else
4174 printk(KERN_WARNING "%s: label too long (%u)!\n",
4175 __func__, len);
4176 }
4177 if (label && label->label)
4178 dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
4179 (char *)label->label, label->len, label->pi, label->lfs);
4180 return status;
4181
4182out_overflow:
4183 print_overflow_msg(__func__, xdr);
4184 return -EIO;
4185}
4186
Linus Torvalds1da177e2005-04-16 15:20:36 -07004187static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
4188{
4189 int status = 0;
4190
4191 time->tv_sec = 0;
4192 time->tv_nsec = 0;
4193 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
4194 return -EIO;
4195 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
4196 status = decode_attr_time(xdr, time);
Trond Myklebust409924e2009-03-11 14:10:27 -04004197 if (status == 0)
4198 status = NFS_ATTR_FATTR_MTIME;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004199 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
4200 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07004201 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004202 return status;
4203}
4204
Trond Myklebust256e48b2012-06-21 11:18:13 -04004205static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004206{
4207 unsigned int attrwords = XDR_QUADLEN(attrlen);
Trond Myklebust256e48b2012-06-21 11:18:13 -04004208 unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004209
4210 if (unlikely(attrwords != nwords)) {
Chuck Leverfe82a182007-09-11 18:01:10 -04004211 dprintk("%s: server returned incorrect attribute length: "
4212 "%u %c %u\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07004213 __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004214 attrwords << 2,
4215 (attrwords < nwords) ? '<' : '>',
4216 nwords << 2);
4217 return -EIO;
4218 }
4219 return 0;
4220}
4221
4222static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4223{
Al Viro8687b632006-10-19 23:28:48 -07004224 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004225
Benny Halevyc0eae662009-08-14 17:20:14 +03004226 p = xdr_inline_decode(xdr, 20);
4227 if (unlikely(!p))
4228 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004229 cinfo->atomic = be32_to_cpup(p++);
Benny Halevy3ceb4db2009-08-14 17:19:41 +03004230 p = xdr_decode_hyper(p, &cinfo->before);
Benny Halevycccddf42009-08-14 17:20:19 +03004231 xdr_decode_hyper(p, &cinfo->after);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004232 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004233out_overflow:
4234 print_overflow_msg(__func__, xdr);
4235 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004236}
4237
Weston Andros Adamson6168f622012-09-10 14:00:46 -04004238static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004239{
Al Viro8687b632006-10-19 23:28:48 -07004240 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004241 uint32_t supp, acc;
4242 int status;
4243
4244 status = decode_op_hdr(xdr, OP_ACCESS);
4245 if (status)
4246 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004247 p = xdr_inline_decode(xdr, 8);
4248 if (unlikely(!p))
4249 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004250 supp = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03004251 acc = be32_to_cpup(p);
Weston Andros Adamson6168f622012-09-10 14:00:46 -04004252 *supported = supp;
4253 *access = acc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004254 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004255out_overflow:
4256 print_overflow_msg(__func__, xdr);
4257 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004258}
4259
Benny Halevy07d30432009-08-14 17:19:52 +03004260static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004261{
Al Viro8687b632006-10-19 23:28:48 -07004262 __be32 *p;
Benny Halevy07d30432009-08-14 17:19:52 +03004263
4264 p = xdr_inline_decode(xdr, len);
4265 if (likely(p)) {
4266 memcpy(buf, p, len);
4267 return 0;
4268 }
4269 print_overflow_msg(__func__, xdr);
4270 return -EIO;
4271}
4272
4273static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4274{
Trond Myklebust2d2f24a2012-03-04 18:13:57 -05004275 return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004276}
4277
Trond Myklebust93b717f2016-05-16 17:42:43 -04004278static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4279{
4280 stateid->type = NFS4_OPEN_STATEID_TYPE;
4281 return decode_stateid(xdr, stateid);
4282}
4283
4284static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4285{
4286 stateid->type = NFS4_LOCK_STATEID_TYPE;
4287 return decode_stateid(xdr, stateid);
4288}
4289
4290static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
4291{
4292 stateid->type = NFS4_DELEGATION_STATEID_TYPE;
4293 return decode_stateid(xdr, stateid);
4294}
4295
Linus Torvalds1da177e2005-04-16 15:20:36 -07004296static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
4297{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004298 int status;
4299
4300 status = decode_op_hdr(xdr, OP_CLOSE);
Trond Myklebustc1d51932008-04-07 13:20:54 -04004301 if (status != -EIO)
4302 nfs_increment_open_seqid(status, res->seqid);
Benny Halevy07d30432009-08-14 17:19:52 +03004303 if (!status)
Trond Myklebust93b717f2016-05-16 17:42:43 -04004304 status = decode_open_stateid(xdr, &res->stateid);
Benny Halevy07d30432009-08-14 17:19:52 +03004305 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004306}
4307
Benny Halevydb942bb2009-08-14 17:19:56 +03004308static int decode_verifier(struct xdr_stream *xdr, void *verifier)
4309{
Chuck Levercd937102012-03-02 17:14:31 -05004310 return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004311}
4312
Trond Myklebust2f2c63b2012-06-08 11:56:09 -04004313static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
4314{
4315 return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
4316}
4317
Fred Isaman0b7c0152012-04-20 14:47:39 -04004318static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004319{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004320 int status;
4321
4322 status = decode_op_hdr(xdr, OP_COMMIT);
Benny Halevydb942bb2009-08-14 17:19:56 +03004323 if (!status)
Trond Myklebust2f2c63b2012-06-08 11:56:09 -04004324 status = decode_write_verifier(xdr, &res->verf->verifier);
Benny Halevydb942bb2009-08-14 17:19:56 +03004325 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004326}
4327
4328static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4329{
Al Viro8687b632006-10-19 23:28:48 -07004330 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004331 uint32_t bmlen;
4332 int status;
4333
4334 status = decode_op_hdr(xdr, OP_CREATE);
4335 if (status)
4336 return status;
4337 if ((status = decode_change_info(xdr, cinfo)))
4338 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004339 p = xdr_inline_decode(xdr, 4);
4340 if (unlikely(!p))
4341 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004342 bmlen = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03004343 p = xdr_inline_decode(xdr, bmlen << 2);
4344 if (likely(p))
4345 return 0;
4346out_overflow:
4347 print_overflow_msg(__func__, xdr);
4348 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004349}
4350
4351static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
4352{
Trond Myklebust256e48b2012-06-21 11:18:13 -04004353 unsigned int savep;
Fred Isamandae100c2011-07-30 20:52:37 -04004354 uint32_t attrlen, bitmap[3] = {0};
Linus Torvalds1da177e2005-04-16 15:20:36 -07004355 int status;
4356
4357 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4358 goto xdr_error;
4359 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4360 goto xdr_error;
4361 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4362 goto xdr_error;
4363 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
4364 goto xdr_error;
Chuck Lever264e6352012-03-01 17:02:05 -05004365 if ((status = decode_attr_fh_expire_type(xdr, bitmap,
4366 &res->fh_expire_type)) != 0)
4367 goto xdr_error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004368 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
4369 goto xdr_error;
4370 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
4371 goto xdr_error;
4372 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
4373 goto xdr_error;
Kinglong Mee8c612822015-08-26 21:12:58 +08004374 if ((status = decode_attr_exclcreat_supported(xdr, bitmap,
4375 res->exclcreat_bitmask)) != 0)
4376 goto xdr_error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004377 status = verify_attr_len(xdr, savep, attrlen);
4378xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07004379 dprintk("%s: xdr returned %d!\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004380 return status;
4381}
Andy Adamson6c0195a2008-12-23 16:06:15 -05004382
Linus Torvalds1da177e2005-04-16 15:20:36 -07004383static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
4384{
Trond Myklebust256e48b2012-06-21 11:18:13 -04004385 unsigned int savep;
Fred Isamandae100c2011-07-30 20:52:37 -04004386 uint32_t attrlen, bitmap[3] = {0};
Linus Torvalds1da177e2005-04-16 15:20:36 -07004387 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05004388
Linus Torvalds1da177e2005-04-16 15:20:36 -07004389 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4390 goto xdr_error;
4391 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4392 goto xdr_error;
4393 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4394 goto xdr_error;
4395
4396 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
4397 goto xdr_error;
4398 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
4399 goto xdr_error;
4400 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
4401 goto xdr_error;
Andreas Gruenbacher1ca843a2015-11-03 18:25:33 +01004402
4403 status = -EIO;
4404 if (unlikely(bitmap[0]))
4405 goto xdr_error;
4406
Linus Torvalds1da177e2005-04-16 15:20:36 -07004407 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
4408 goto xdr_error;
4409 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
4410 goto xdr_error;
4411 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
4412 goto xdr_error;
4413
4414 status = verify_attr_len(xdr, savep, attrlen);
4415xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07004416 dprintk("%s: xdr returned %d!\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004417 return status;
4418}
4419
4420static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
4421{
Trond Myklebust256e48b2012-06-21 11:18:13 -04004422 unsigned int savep;
Fred Isamandae100c2011-07-30 20:52:37 -04004423 uint32_t attrlen, bitmap[3] = {0};
Linus Torvalds1da177e2005-04-16 15:20:36 -07004424 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05004425
Linus Torvalds1da177e2005-04-16 15:20:36 -07004426 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4427 goto xdr_error;
4428 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4429 goto xdr_error;
4430 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4431 goto xdr_error;
4432
4433 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
4434 goto xdr_error;
4435 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
4436 goto xdr_error;
4437
4438 status = verify_attr_len(xdr, savep, attrlen);
4439xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07004440 dprintk("%s: xdr returned %d!\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004441 return status;
4442}
4443
Andy Adamson88034c32012-05-23 05:02:34 -04004444static int decode_threshold_hint(struct xdr_stream *xdr,
4445 uint32_t *bitmap,
4446 uint64_t *res,
4447 uint32_t hint_bit)
4448{
4449 __be32 *p;
4450
4451 *res = 0;
4452 if (likely(bitmap[0] & hint_bit)) {
4453 p = xdr_inline_decode(xdr, 8);
4454 if (unlikely(!p))
4455 goto out_overflow;
4456 xdr_decode_hyper(p, res);
4457 }
4458 return 0;
4459out_overflow:
4460 print_overflow_msg(__func__, xdr);
4461 return -EIO;
4462}
4463
4464static int decode_first_threshold_item4(struct xdr_stream *xdr,
4465 struct nfs4_threshold *res)
4466{
Trond Myklebust256e48b2012-06-21 11:18:13 -04004467 __be32 *p;
4468 unsigned int savep;
Andy Adamson88034c32012-05-23 05:02:34 -04004469 uint32_t bitmap[3] = {0,}, attrlen;
4470 int status;
4471
4472 /* layout type */
4473 p = xdr_inline_decode(xdr, 4);
4474 if (unlikely(!p)) {
4475 print_overflow_msg(__func__, xdr);
4476 return -EIO;
4477 }
4478 res->l_type = be32_to_cpup(p);
4479
4480 /* thi_hintset bitmap */
4481 status = decode_attr_bitmap(xdr, bitmap);
4482 if (status < 0)
4483 goto xdr_error;
4484
4485 /* thi_hintlist length */
4486 status = decode_attr_length(xdr, &attrlen, &savep);
4487 if (status < 0)
4488 goto xdr_error;
4489 /* thi_hintlist */
4490 status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
4491 if (status < 0)
4492 goto xdr_error;
4493 status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
4494 if (status < 0)
4495 goto xdr_error;
4496 status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
4497 THRESHOLD_RD_IO);
4498 if (status < 0)
4499 goto xdr_error;
4500 status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
4501 THRESHOLD_WR_IO);
4502 if (status < 0)
4503 goto xdr_error;
4504
4505 status = verify_attr_len(xdr, savep, attrlen);
4506 res->bm = bitmap[0];
4507
4508 dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
4509 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
4510 res->wr_io_sz);
4511xdr_error:
4512 dprintk("%s ret=%d!\n", __func__, status);
4513 return status;
4514}
4515
4516/*
4517 * Thresholds on pNFS direct I/O vrs MDS I/O
4518 */
4519static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
4520 uint32_t *bitmap,
4521 struct nfs4_threshold *res)
4522{
4523 __be32 *p;
4524 int status = 0;
4525 uint32_t num;
4526
4527 if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
4528 return -EIO;
Trond Myklebust029c5342012-06-05 09:35:44 -04004529 if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
Trond Myklebust1549210f2012-06-05 09:16:47 -04004530 /* Did the server return an unrequested attribute? */
4531 if (unlikely(res == NULL))
4532 return -EREMOTEIO;
Andy Adamson88034c32012-05-23 05:02:34 -04004533 p = xdr_inline_decode(xdr, 4);
4534 if (unlikely(!p))
4535 goto out_overflow;
4536 num = be32_to_cpup(p);
4537 if (num == 0)
4538 return 0;
4539 if (num > 1)
4540 printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
4541 "drivers per filesystem not supported\n",
4542 __func__);
4543
4544 status = decode_first_threshold_item4(xdr, res);
Trond Myklebust029c5342012-06-05 09:35:44 -04004545 bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
Andy Adamson88034c32012-05-23 05:02:34 -04004546 }
4547 return status;
4548out_overflow:
4549 print_overflow_msg(__func__, xdr);
4550 return -EIO;
4551}
4552
Bryan Schumakerae42c702010-10-21 16:33:17 -04004553static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
4554 struct nfs_fattr *fattr, struct nfs_fh *fh,
David Quigleyaa9c2662013-05-22 12:50:44 -04004555 struct nfs4_fs_locations *fs_loc, struct nfs4_label *label,
Trond Myklebust6926afd2012-01-07 13:22:46 -05004556 const struct nfs_server *server)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004557{
Trond Myklebustbca79472009-03-11 14:10:26 -04004558 int status;
4559 umode_t fmode = 0;
Bryan Schumakerae42c702010-10-21 16:33:17 -04004560 uint32_t type;
Trond Myklebustee7b75f2011-06-16 13:15:41 -04004561 int32_t err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004562
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004563 status = decode_attr_type(xdr, bitmap, &type);
4564 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004565 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004566 fattr->mode = 0;
4567 if (status != 0) {
4568 fattr->mode |= nfs_type2fmt[type];
4569 fattr->valid |= status;
4570 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07004571
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004572 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
4573 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004574 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_size(xdr, bitmap, &fattr->size);
4578 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004579 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004580 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004581
4582 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
4583 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004584 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004585 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004586
Trond Myklebustee7b75f2011-06-16 13:15:41 -04004587 err = 0;
4588 status = decode_attr_error(xdr, bitmap, &err);
Bryan Schumakerae42c702010-10-21 16:33:17 -04004589 if (status < 0)
4590 goto xdr_error;
4591
4592 status = decode_attr_filehandle(xdr, bitmap, fh);
4593 if (status < 0)
4594 goto xdr_error;
4595
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004596 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
4597 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004598 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004599 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004600
Trond Myklebust8b7e3f42012-01-30 15:43:56 -05004601 status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004602 if (status < 0)
Trond Myklebust683b57b2006-06-09 09:34:22 -04004603 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004604 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004605
Andreas Gruenbacher1ca843a2015-11-03 18:25:33 +01004606 status = -EIO;
4607 if (unlikely(bitmap[0]))
4608 goto xdr_error;
4609
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004610 status = decode_attr_mode(xdr, bitmap, &fmode);
4611 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004612 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004613 if (status != 0) {
4614 fattr->mode |= fmode;
4615 fattr->valid |= status;
4616 }
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004617
4618 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4619 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004620 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004621 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004622
Trond Myklebust6926afd2012-01-07 13:22:46 -05004623 status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004624 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004625 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004626 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004627
Trond Myklebust6926afd2012-01-07 13:22:46 -05004628 status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004629 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004630 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004631 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004632
4633 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4634 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004635 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004636 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004637
4638 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4639 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004640 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004641 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004642
4643 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4644 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004645 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004646 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004647
4648 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4649 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004650 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004651 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004652
4653 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4654 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004655 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004656 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004657
Trond Myklebust28331a42011-04-27 13:47:52 -04004658 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004659 if (status < 0)
Manoj Naik99baf622006-06-09 09:34:24 -04004660 goto xdr_error;
Trond Myklebust28331a42011-04-27 13:47:52 -04004661 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004662
Andreas Gruenbacher1ca843a2015-11-03 18:25:33 +01004663 status = -EIO;
4664 if (unlikely(bitmap[1]))
4665 goto xdr_error;
4666
Andy Adamson88034c32012-05-23 05:02:34 -04004667 status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
4668 if (status < 0)
4669 goto xdr_error;
4670
David Quigleyaa9c2662013-05-22 12:50:44 -04004671 if (label) {
4672 status = decode_attr_security_label(xdr, bitmap, label);
4673 if (status < 0)
4674 goto xdr_error;
4675 fattr->valid |= status;
4676 }
4677
Bryan Schumakerae42c702010-10-21 16:33:17 -04004678xdr_error:
4679 dprintk("%s: xdr returned %d\n", __func__, -status);
4680 return status;
4681}
4682
4683static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
Trond Myklebust8b7e3f42012-01-30 15:43:56 -05004684 struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
David Quigleyaa9c2662013-05-22 12:50:44 -04004685 struct nfs4_label *label, const struct nfs_server *server)
Bryan Schumakerae42c702010-10-21 16:33:17 -04004686{
Trond Myklebust256e48b2012-06-21 11:18:13 -04004687 unsigned int savep;
Bryan Schumakerae42c702010-10-21 16:33:17 -04004688 uint32_t attrlen,
Fred Isamandae100c2011-07-30 20:52:37 -04004689 bitmap[3] = {0};
Bryan Schumakerae42c702010-10-21 16:33:17 -04004690 int status;
4691
4692 status = decode_op_hdr(xdr, OP_GETATTR);
4693 if (status < 0)
4694 goto xdr_error;
4695
4696 status = decode_attr_bitmap(xdr, bitmap);
4697 if (status < 0)
4698 goto xdr_error;
4699
4700 status = decode_attr_length(xdr, &attrlen, &savep);
4701 if (status < 0)
4702 goto xdr_error;
4703
David Quigleyaa9c2662013-05-22 12:50:44 -04004704 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc,
4705 label, server);
Bryan Schumakerae42c702010-10-21 16:33:17 -04004706 if (status < 0)
4707 goto xdr_error;
4708
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004709 status = verify_attr_len(xdr, savep, attrlen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004710xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07004711 dprintk("%s: xdr returned %d\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004712 return status;
4713}
4714
David Quigleyaa9c2662013-05-22 12:50:44 -04004715static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4716 struct nfs4_label *label, const struct nfs_server *server)
4717{
4718 return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server);
4719}
4720
Bryan Schumakerae42c702010-10-21 16:33:17 -04004721static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
Trond Myklebust6926afd2012-01-07 13:22:46 -05004722 const struct nfs_server *server)
Bryan Schumakerae42c702010-10-21 16:33:17 -04004723{
David Quigleyaa9c2662013-05-22 12:50:44 -04004724 return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server);
Bryan Schumakerae42c702010-10-21 16:33:17 -04004725}
Linus Torvalds1da177e2005-04-16 15:20:36 -07004726
Andy Adamson504913f2010-10-20 00:17:57 -04004727/*
Jeff Layton3132e492016-08-10 15:58:24 -04004728 * Decode potentially multiple layout types.
Andy Adamson504913f2010-10-20 00:17:57 -04004729 */
Jeff Layton3132e492016-08-10 15:58:24 -04004730static int decode_pnfs_layout_types(struct xdr_stream *xdr,
Jeff Laytonca440c32016-09-15 14:40:49 -04004731 struct nfs_fsinfo *fsinfo)
Andy Adamson504913f2010-10-20 00:17:57 -04004732{
Trond Myklebustb8a8a0d2013-08-20 21:08:56 -04004733 __be32 *p;
Jeff Laytonca440c32016-09-15 14:40:49 -04004734 uint32_t i;
Andy Adamson504913f2010-10-20 00:17:57 -04004735
4736 p = xdr_inline_decode(xdr, 4);
4737 if (unlikely(!p))
4738 goto out_overflow;
Jeff Laytonca440c32016-09-15 14:40:49 -04004739 fsinfo->nlayouttypes = be32_to_cpup(p);
Andy Adamson504913f2010-10-20 00:17:57 -04004740
4741 /* pNFS is not supported by the underlying file system */
Jeff Laytonca440c32016-09-15 14:40:49 -04004742 if (fsinfo->nlayouttypes == 0)
Andy Adamson504913f2010-10-20 00:17:57 -04004743 return 0;
Andy Adamson504913f2010-10-20 00:17:57 -04004744
4745 /* Decode and set first layout type, move xdr->p past unused types */
Jeff Laytonca440c32016-09-15 14:40:49 -04004746 p = xdr_inline_decode(xdr, fsinfo->nlayouttypes * 4);
Andy Adamson504913f2010-10-20 00:17:57 -04004747 if (unlikely(!p))
4748 goto out_overflow;
Jeff Laytonca440c32016-09-15 14:40:49 -04004749
4750 /* If we get too many, then just cap it at the max */
4751 if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) {
4752 printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n",
4753 __func__, fsinfo->nlayouttypes);
4754 fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES;
4755 }
4756
4757 for(i = 0; i < fsinfo->nlayouttypes; ++i)
4758 fsinfo->layouttype[i] = be32_to_cpup(p++);
Andy Adamson504913f2010-10-20 00:17:57 -04004759 return 0;
4760out_overflow:
4761 print_overflow_msg(__func__, xdr);
4762 return -EIO;
4763}
4764
4765/*
4766 * The type of file system exported.
4767 * Note we must ensure that layouttype is set in any non-error case.
4768 */
4769static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
Jeff Laytonca440c32016-09-15 14:40:49 -04004770 struct nfs_fsinfo *fsinfo)
Andy Adamson504913f2010-10-20 00:17:57 -04004771{
4772 int status = 0;
4773
4774 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4775 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4776 return -EIO;
4777 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
Jeff Laytonca440c32016-09-15 14:40:49 -04004778 status = decode_pnfs_layout_types(xdr, fsinfo);
Andy Adamson504913f2010-10-20 00:17:57 -04004779 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
Jeff Layton3132e492016-08-10 15:58:24 -04004780 }
Andy Adamson504913f2010-10-20 00:17:57 -04004781 return status;
4782}
4783
Fred Isamandae100c2011-07-30 20:52:37 -04004784/*
4785 * The prefered block size for layout directed io
4786 */
4787static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4788 uint32_t *res)
4789{
4790 __be32 *p;
4791
4792 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4793 *res = 0;
4794 if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
4795 p = xdr_inline_decode(xdr, 4);
4796 if (unlikely(!p)) {
4797 print_overflow_msg(__func__, xdr);
4798 return -EIO;
4799 }
4800 *res = be32_to_cpup(p);
4801 bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
4802 }
4803 return 0;
4804}
4805
Peng Tao2a92ee92015-09-26 02:24:37 +08004806/*
4807 * The granularity of a CLONE operation.
4808 */
4809static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
4810 uint32_t *res)
4811{
4812 __be32 *p;
4813
4814 dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
4815 *res = 0;
4816 if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) {
4817 p = xdr_inline_decode(xdr, 4);
4818 if (unlikely(!p)) {
4819 print_overflow_msg(__func__, xdr);
4820 return -EIO;
4821 }
4822 *res = be32_to_cpup(p);
4823 bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE;
4824 }
4825 return 0;
4826}
4827
Linus Torvalds1da177e2005-04-16 15:20:36 -07004828static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4829{
Trond Myklebust256e48b2012-06-21 11:18:13 -04004830 unsigned int savep;
Fred Isamandae100c2011-07-30 20:52:37 -04004831 uint32_t attrlen, bitmap[3];
Linus Torvalds1da177e2005-04-16 15:20:36 -07004832 int status;
4833
4834 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4835 goto xdr_error;
4836 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4837 goto xdr_error;
4838 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4839 goto xdr_error;
4840
4841 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4842
4843 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4844 goto xdr_error;
4845 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4846 goto xdr_error;
4847 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4848 goto xdr_error;
4849 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4850 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4851 goto xdr_error;
4852 fsinfo->wtpref = fsinfo->wtmax;
Andreas Gruenbacher1ca843a2015-11-03 18:25:33 +01004853
4854 status = -EIO;
4855 if (unlikely(bitmap[0]))
4856 goto xdr_error;
4857
Ricardo Labiaga55b6e772010-10-12 16:30:06 -07004858 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4859 if (status != 0)
4860 goto xdr_error;
Jeff Laytonca440c32016-09-15 14:40:49 -04004861 status = decode_attr_pnfstype(xdr, bitmap, fsinfo);
Andy Adamson504913f2010-10-20 00:17:57 -04004862 if (status != 0)
4863 goto xdr_error;
Andreas Gruenbacher1ca843a2015-11-03 18:25:33 +01004864
4865 status = -EIO;
4866 if (unlikely(bitmap[1]))
4867 goto xdr_error;
4868
Fred Isamandae100c2011-07-30 20:52:37 -04004869 status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
4870 if (status)
4871 goto xdr_error;
Peng Tao2a92ee92015-09-26 02:24:37 +08004872 status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize);
4873 if (status)
4874 goto xdr_error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004875
4876 status = verify_attr_len(xdr, savep, attrlen);
4877xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07004878 dprintk("%s: xdr returned %d!\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004879 return status;
4880}
4881
4882static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4883{
Al Viro8687b632006-10-19 23:28:48 -07004884 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004885 uint32_t len;
4886 int status;
4887
Trond Myklebust99367812007-07-17 21:52:41 -04004888 /* Zero handle first to allow comparisons */
4889 memset(fh, 0, sizeof(*fh));
4890
Linus Torvalds1da177e2005-04-16 15:20:36 -07004891 status = decode_op_hdr(xdr, OP_GETFH);
4892 if (status)
4893 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004894
Benny Halevyc0eae662009-08-14 17:20:14 +03004895 p = xdr_inline_decode(xdr, 4);
4896 if (unlikely(!p))
4897 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004898 len = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004899 if (len > NFS4_FHSIZE)
4900 return -EIO;
4901 fh->size = len;
Benny Halevyc0eae662009-08-14 17:20:14 +03004902 p = xdr_inline_decode(xdr, len);
4903 if (unlikely(!p))
4904 goto out_overflow;
Benny Halevy99398d02009-08-14 17:20:05 +03004905 memcpy(fh->data, p, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004906 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004907out_overflow:
4908 print_overflow_msg(__func__, xdr);
4909 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004910}
4911
4912static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4913{
4914 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05004915
Linus Torvalds1da177e2005-04-16 15:20:36 -07004916 status = decode_op_hdr(xdr, OP_LINK);
4917 if (status)
4918 return status;
4919 return decode_change_info(xdr, cinfo);
4920}
4921
4922/*
4923 * We create the owner, so we know a proper owner.id length is 4.
4924 */
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004925static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004926{
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004927 uint64_t offset, length, clientid;
Al Viro8687b632006-10-19 23:28:48 -07004928 __be32 *p;
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004929 uint32_t namelen, type;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004930
Bryan Schumakerbabddc72010-10-20 15:44:29 -04004931 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
Benny Halevyc0eae662009-08-14 17:20:14 +03004932 if (unlikely(!p))
4933 goto out_overflow;
Bryan Schumakerbabddc72010-10-20 15:44:29 -04004934 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
Benny Halevy3ceb4db2009-08-14 17:19:41 +03004935 p = xdr_decode_hyper(p, &length);
Bryan Schumakerbabddc72010-10-20 15:44:29 -04004936 type = be32_to_cpup(p++); /* 4 byte read */
4937 if (fl != NULL) { /* manipulate file lock */
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004938 fl->fl_start = (loff_t)offset;
4939 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4940 if (length == ~(uint64_t)0)
4941 fl->fl_end = OFFSET_MAX;
4942 fl->fl_type = F_WRLCK;
4943 if (type & 1)
4944 fl->fl_type = F_RDLCK;
4945 fl->fl_pid = 0;
4946 }
Bryan Schumakerbabddc72010-10-20 15:44:29 -04004947 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4948 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4949 p = xdr_inline_decode(xdr, namelen); /* variable size field */
Benny Halevyc0eae662009-08-14 17:20:14 +03004950 if (likely(p))
4951 return -NFS4ERR_DENIED;
4952out_overflow:
4953 print_overflow_msg(__func__, xdr);
4954 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004955}
4956
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004957static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004958{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004959 int status;
4960
4961 status = decode_op_hdr(xdr, OP_LOCK);
Trond Myklebustc1d51932008-04-07 13:20:54 -04004962 if (status == -EIO)
4963 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004964 if (status == 0) {
Trond Myklebust93b717f2016-05-16 17:42:43 -04004965 status = decode_lock_stateid(xdr, &res->stateid);
Benny Halevy07d30432009-08-14 17:19:52 +03004966 if (unlikely(status))
4967 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004968 } else if (status == -NFS4ERR_DENIED)
Trond Myklebustc1d51932008-04-07 13:20:54 -04004969 status = decode_lock_denied(xdr, NULL);
4970 if (res->open_seqid != NULL)
4971 nfs_increment_open_seqid(status, res->open_seqid);
4972 nfs_increment_lock_seqid(status, res->lock_seqid);
4973out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004974 return status;
4975}
4976
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004977static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004978{
4979 int status;
4980 status = decode_op_hdr(xdr, OP_LOCKT);
4981 if (status == -NFS4ERR_DENIED)
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004982 return decode_lock_denied(xdr, res->denied);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004983 return status;
4984}
4985
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004986static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004987{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004988 int status;
4989
4990 status = decode_op_hdr(xdr, OP_LOCKU);
Trond Myklebustc1d51932008-04-07 13:20:54 -04004991 if (status != -EIO)
4992 nfs_increment_lock_seqid(status, res->seqid);
Benny Halevy07d30432009-08-14 17:19:52 +03004993 if (status == 0)
Trond Myklebust93b717f2016-05-16 17:42:43 -04004994 status = decode_lock_stateid(xdr, &res->stateid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004995 return status;
4996}
4997
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04004998static int decode_release_lockowner(struct xdr_stream *xdr)
4999{
5000 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
5001}
5002
Linus Torvalds1da177e2005-04-16 15:20:36 -07005003static int decode_lookup(struct xdr_stream *xdr)
5004{
5005 return decode_op_hdr(xdr, OP_LOOKUP);
5006}
5007
5008/* This is too sick! */
Trond Myklebust7d160a62015-09-05 19:06:57 -04005009static int decode_space_limit(struct xdr_stream *xdr,
5010 unsigned long *pagemod_limit)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005011{
Andy Adamson05d564f2008-12-23 16:06:15 -05005012 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005013 uint32_t limit_type, nblocks, blocksize;
Trond Myklebust7d160a62015-09-05 19:06:57 -04005014 u64 maxsize = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005015
Benny Halevyc0eae662009-08-14 17:20:14 +03005016 p = xdr_inline_decode(xdr, 12);
5017 if (unlikely(!p))
5018 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03005019 limit_type = be32_to_cpup(p++);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005020 switch (limit_type) {
Trond Myklebust7d160a62015-09-05 19:06:57 -04005021 case NFS4_LIMIT_SIZE:
5022 xdr_decode_hyper(p, &maxsize);
Andy Adamson05d564f2008-12-23 16:06:15 -05005023 break;
Trond Myklebust7d160a62015-09-05 19:06:57 -04005024 case NFS4_LIMIT_BLOCKS:
Benny Halevy6f723f72009-08-14 17:19:37 +03005025 nblocks = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03005026 blocksize = be32_to_cpup(p);
Trond Myklebust7d160a62015-09-05 19:06:57 -04005027 maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005028 }
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03005029 maxsize >>= PAGE_SHIFT;
Trond Myklebust7d160a62015-09-05 19:06:57 -04005030 *pagemod_limit = min_t(u64, maxsize, ULONG_MAX);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005031 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03005032out_overflow:
5033 print_overflow_msg(__func__, xdr);
5034 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005035}
5036
Trond Myklebust6ae37332015-01-30 14:21:14 -05005037static int decode_rw_delegation(struct xdr_stream *xdr,
5038 uint32_t delegation_type,
5039 struct nfs_openres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005040{
Andy Adamson05d564f2008-12-23 16:06:15 -05005041 __be32 *p;
Benny Halevy07d30432009-08-14 17:19:52 +03005042 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005043
Trond Myklebust93b717f2016-05-16 17:42:43 -04005044 status = decode_delegation_stateid(xdr, &res->delegation);
Benny Halevy07d30432009-08-14 17:19:52 +03005045 if (unlikely(status))
5046 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03005047 p = xdr_inline_decode(xdr, 4);
5048 if (unlikely(!p))
5049 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03005050 res->do_recall = be32_to_cpup(p);
Andy Adamson05d564f2008-12-23 16:06:15 -05005051
Linus Torvalds1da177e2005-04-16 15:20:36 -07005052 switch (delegation_type) {
Andy Adamson05d564f2008-12-23 16:06:15 -05005053 case NFS4_OPEN_DELEGATE_READ:
5054 res->delegation_type = FMODE_READ;
5055 break;
5056 case NFS4_OPEN_DELEGATE_WRITE:
5057 res->delegation_type = FMODE_WRITE|FMODE_READ;
Trond Myklebust7d160a62015-09-05 19:06:57 -04005058 if (decode_space_limit(xdr, &res->pagemod_limit) < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005059 return -EIO;
5060 }
David Howells7539bba2006-08-22 20:06:09 -04005061 return decode_ace(xdr, NULL, res->server->nfs_client);
Benny Halevyc0eae662009-08-14 17:20:14 +03005062out_overflow:
5063 print_overflow_msg(__func__, xdr);
5064 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005065}
5066
Trond Myklebust6ae37332015-01-30 14:21:14 -05005067static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5068{
5069 __be32 *p;
5070 uint32_t why_no_delegation;
5071
5072 p = xdr_inline_decode(xdr, 4);
5073 if (unlikely(!p))
5074 goto out_overflow;
5075 why_no_delegation = be32_to_cpup(p);
5076 switch (why_no_delegation) {
5077 case WND4_CONTENTION:
5078 case WND4_RESOURCE:
5079 xdr_inline_decode(xdr, 4);
5080 /* Ignore for now */
5081 }
5082 return 0;
5083out_overflow:
5084 print_overflow_msg(__func__, xdr);
5085 return -EIO;
5086}
5087
5088static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
5089{
5090 __be32 *p;
5091 uint32_t delegation_type;
5092
5093 p = xdr_inline_decode(xdr, 4);
5094 if (unlikely(!p))
5095 goto out_overflow;
5096 delegation_type = be32_to_cpup(p);
5097 res->delegation_type = 0;
5098 switch (delegation_type) {
5099 case NFS4_OPEN_DELEGATE_NONE:
5100 return 0;
5101 case NFS4_OPEN_DELEGATE_READ:
5102 case NFS4_OPEN_DELEGATE_WRITE:
5103 return decode_rw_delegation(xdr, delegation_type, res);
5104 case NFS4_OPEN_DELEGATE_NONE_EXT:
5105 return decode_no_delegation(xdr, res);
5106 }
5107 return -EIO;
5108out_overflow:
5109 print_overflow_msg(__func__, xdr);
5110 return -EIO;
5111}
5112
Linus Torvalds1da177e2005-04-16 15:20:36 -07005113static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
5114{
Andy Adamson05d564f2008-12-23 16:06:15 -05005115 __be32 *p;
Jeff Laytonaa53ed52007-06-05 14:49:03 -04005116 uint32_t savewords, bmlen, i;
Andy Adamson05d564f2008-12-23 16:06:15 -05005117 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005118
Trond Myklebustc7848f62013-12-04 17:39:23 -05005119 if (!__decode_op_hdr(xdr, OP_OPEN, &status))
5120 return status;
5121 nfs_increment_open_seqid(status, res->seqid);
5122 if (status)
5123 return status;
Trond Myklebust93b717f2016-05-16 17:42:43 -04005124 status = decode_open_stateid(xdr, &res->stateid);
Benny Halevy07d30432009-08-14 17:19:52 +03005125 if (unlikely(status))
Andy Adamson05d564f2008-12-23 16:06:15 -05005126 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005127
Andy Adamson05d564f2008-12-23 16:06:15 -05005128 decode_change_info(xdr, &res->cinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005129
Benny Halevyc0eae662009-08-14 17:20:14 +03005130 p = xdr_inline_decode(xdr, 8);
5131 if (unlikely(!p))
5132 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03005133 res->rflags = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03005134 bmlen = be32_to_cpup(p);
Andy Adamson05d564f2008-12-23 16:06:15 -05005135 if (bmlen > 10)
5136 goto xdr_error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005137
Benny Halevyc0eae662009-08-14 17:20:14 +03005138 p = xdr_inline_decode(xdr, bmlen << 2);
5139 if (unlikely(!p))
5140 goto out_overflow;
Jeff Laytonaa53ed52007-06-05 14:49:03 -04005141 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
5142 for (i = 0; i < savewords; ++i)
Benny Halevy6f723f72009-08-14 17:19:37 +03005143 res->attrset[i] = be32_to_cpup(p++);
Jeff Laytonaa53ed52007-06-05 14:49:03 -04005144 for (; i < NFS4_BITMAP_SIZE; i++)
5145 res->attrset[i] = 0;
5146
Linus Torvalds1da177e2005-04-16 15:20:36 -07005147 return decode_delegation(xdr, res);
5148xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07005149 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005150 return -EIO;
Benny Halevyc0eae662009-08-14 17:20:14 +03005151out_overflow:
5152 print_overflow_msg(__func__, xdr);
5153 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005154}
5155
5156static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
5157{
Linus Torvalds1da177e2005-04-16 15:20:36 -07005158 int status;
5159
Andy Adamson05d564f2008-12-23 16:06:15 -05005160 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
Trond Myklebustc1d51932008-04-07 13:20:54 -04005161 if (status != -EIO)
5162 nfs_increment_open_seqid(status, res->seqid);
Benny Halevy07d30432009-08-14 17:19:52 +03005163 if (!status)
Trond Myklebust93b717f2016-05-16 17:42:43 -04005164 status = decode_open_stateid(xdr, &res->stateid);
Benny Halevy07d30432009-08-14 17:19:52 +03005165 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005166}
5167
5168static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
5169{
Linus Torvalds1da177e2005-04-16 15:20:36 -07005170 int status;
5171
5172 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
Trond Myklebustc1d51932008-04-07 13:20:54 -04005173 if (status != -EIO)
5174 nfs_increment_open_seqid(status, res->seqid);
Benny Halevy07d30432009-08-14 17:19:52 +03005175 if (!status)
Trond Myklebust93b717f2016-05-16 17:42:43 -04005176 status = decode_open_stateid(xdr, &res->stateid);
Benny Halevy07d30432009-08-14 17:19:52 +03005177 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005178}
5179
5180static int decode_putfh(struct xdr_stream *xdr)
5181{
5182 return decode_op_hdr(xdr, OP_PUTFH);
5183}
5184
5185static int decode_putrootfh(struct xdr_stream *xdr)
5186{
5187 return decode_op_hdr(xdr, OP_PUTROOTFH);
5188}
5189
Anna Schumaker9137bdf2014-05-06 09:12:25 -04005190static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req,
5191 struct nfs_pgio_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005192{
Al Viro8687b632006-10-19 23:28:48 -07005193 __be32 *p;
Trond Myklebust64bd5772012-06-20 22:35:05 -04005194 uint32_t count, eof, recvd;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005195 int status;
5196
5197 status = decode_op_hdr(xdr, OP_READ);
5198 if (status)
5199 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03005200 p = xdr_inline_decode(xdr, 8);
5201 if (unlikely(!p))
5202 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03005203 eof = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03005204 count = be32_to_cpup(p);
Trond Myklebust64bd5772012-06-20 22:35:05 -04005205 recvd = xdr_read_pages(xdr, count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005206 if (count > recvd) {
Chuck Leverfe82a182007-09-11 18:01:10 -04005207 dprintk("NFS: server cheating in read reply: "
Linus Torvalds1da177e2005-04-16 15:20:36 -07005208 "count %u > recvd %u\n", count, recvd);
5209 count = recvd;
5210 eof = 0;
5211 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07005212 res->eof = eof;
5213 res->count = count;
5214 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03005215out_overflow:
5216 print_overflow_msg(__func__, xdr);
5217 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005218}
5219
5220static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
5221{
Chuck Leverbcecff72007-10-26 13:32:03 -04005222 int status;
Chuck Levercd937102012-03-02 17:14:31 -05005223 __be32 verf[2];
Linus Torvalds1da177e2005-04-16 15:20:36 -07005224
5225 status = decode_op_hdr(xdr, OP_READDIR);
Benny Halevydb942bb2009-08-14 17:19:56 +03005226 if (!status)
5227 status = decode_verifier(xdr, readdir->verifier.data);
5228 if (unlikely(status))
Linus Torvalds1da177e2005-04-16 15:20:36 -07005229 return status;
Chuck Levercd937102012-03-02 17:14:31 -05005230 memcpy(verf, readdir->verifier.data, sizeof(verf));
Fred Isaman44109242008-04-02 15:21:15 +03005231 dprintk("%s: verifier = %08x:%08x\n",
Chuck Levercd937102012-03-02 17:14:31 -05005232 __func__, verf[0], verf[1]);
Trond Myklebust64bd5772012-06-20 22:35:05 -04005233 return xdr_read_pages(xdr, xdr->buf->page_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005234}
5235
5236static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
5237{
5238 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
Chuck Leverbcecff72007-10-26 13:32:03 -04005239 u32 len, recvd;
Al Viro8687b632006-10-19 23:28:48 -07005240 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005241 int status;
5242
5243 status = decode_op_hdr(xdr, OP_READLINK);
5244 if (status)
5245 return status;
5246
5247 /* Convert length of symlink */
Benny Halevyc0eae662009-08-14 17:20:14 +03005248 p = xdr_inline_decode(xdr, 4);
5249 if (unlikely(!p))
5250 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03005251 len = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005252 if (len >= rcvbuf->page_len || len <= 0) {
Chuck Leverfe82a182007-09-11 18:01:10 -04005253 dprintk("nfs: server returned giant symlink!\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07005254 return -ENAMETOOLONG;
5255 }
Trond Myklebust64bd5772012-06-20 22:35:05 -04005256 recvd = xdr_read_pages(xdr, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005257 if (recvd < len) {
Chuck Leverfe82a182007-09-11 18:01:10 -04005258 dprintk("NFS: server cheating in readlink reply: "
Linus Torvalds1da177e2005-04-16 15:20:36 -07005259 "count %u > recvd %u\n", len, recvd);
5260 return -EIO;
5261 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07005262 /*
5263 * The XDR encode routine has set things up so that
5264 * the link text will be copied directly into the
5265 * buffer. We just have to do overflow-checking,
5266 * and and null-terminate the text (the VFS expects
5267 * null-termination).
5268 */
Chuck Leverb4687da2010-09-21 16:55:48 -04005269 xdr_terminate_string(rcvbuf, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005270 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03005271out_overflow:
5272 print_overflow_msg(__func__, xdr);
5273 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005274}
5275
5276static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
5277{
5278 int status;
5279
5280 status = decode_op_hdr(xdr, OP_REMOVE);
5281 if (status)
5282 goto out;
5283 status = decode_change_info(xdr, cinfo);
5284out:
5285 return status;
5286}
5287
5288static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
5289 struct nfs4_change_info *new_cinfo)
5290{
5291 int status;
5292
5293 status = decode_op_hdr(xdr, OP_RENAME);
5294 if (status)
5295 goto out;
5296 if ((status = decode_change_info(xdr, old_cinfo)))
5297 goto out;
5298 status = decode_change_info(xdr, new_cinfo);
5299out:
5300 return status;
5301}
5302
5303static int decode_renew(struct xdr_stream *xdr)
5304{
5305 return decode_op_hdr(xdr, OP_RENEW);
5306}
5307
Trond Myklebust56ae19f2005-10-27 22:12:40 -04005308static int
5309decode_restorefh(struct xdr_stream *xdr)
5310{
5311 return decode_op_hdr(xdr, OP_RESTOREFH);
5312}
5313
J. Bruce Fields029d1052005-06-22 17:16:22 +00005314static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
Andy Adamsonbf118a32011-12-07 11:55:27 -05005315 struct nfs_getaclres *res)
J. Bruce Fields029d1052005-06-22 17:16:22 +00005316{
Trond Myklebust256e48b2012-06-21 11:18:13 -04005317 unsigned int savep;
J. Bruce Fields029d1052005-06-22 17:16:22 +00005318 uint32_t attrlen,
Fred Isamandae100c2011-07-30 20:52:37 -04005319 bitmap[3] = {0};
J. Bruce Fields029d1052005-06-22 17:16:22 +00005320 int status;
Trond Myklebustcff298c2012-08-14 17:14:17 -04005321 unsigned int pg_offset;
J. Bruce Fields029d1052005-06-22 17:16:22 +00005322
Andy Adamsonbf118a32011-12-07 11:55:27 -05005323 res->acl_len = 0;
J. Bruce Fields029d1052005-06-22 17:16:22 +00005324 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
5325 goto out;
Sachin Prabhu5a006892012-04-17 14:35:39 +01005326
Trond Myklebust519d3952012-08-14 17:30:10 -04005327 xdr_enter_page(xdr, xdr->buf->page_len);
5328
Trond Myklebustcff298c2012-08-14 17:14:17 -04005329 /* Calculate the offset of the page data */
5330 pg_offset = xdr->buf->head[0].iov_len;
Sachin Prabhu5a006892012-04-17 14:35:39 +01005331
J. Bruce Fields029d1052005-06-22 17:16:22 +00005332 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
5333 goto out;
5334 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
5335 goto out;
5336
5337 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
5338 return -EIO;
5339 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
J. Bruce Fields029d1052005-06-22 17:16:22 +00005340
Andy Adamsonbf118a32011-12-07 11:55:27 -05005341 /* The bitmap (xdr len + bitmaps) and the attr xdr len words
5342 * are stored with the acl data to handle the problem of
5343 * variable length bitmaps.*/
Trond Myklebustcff298c2012-08-14 17:14:17 -04005344 res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
Trond Myklebust519d3952012-08-14 17:30:10 -04005345 res->acl_len = attrlen;
Trond Myklebust1f1ea6c2012-08-26 11:44:43 -07005346
5347 /* Check for receive buffer overflow */
5348 if (res->acl_len > (xdr->nwords << 2) ||
5349 res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
5350 res->acl_flags |= NFS4_ACL_TRUNC;
Trond Myklebust519d3952012-08-14 17:30:10 -04005351 dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
Trond Myklebustcff298c2012-08-14 17:14:17 -04005352 attrlen, xdr->nwords << 2);
J. Bruce Fields029d1052005-06-22 17:16:22 +00005353 }
J. Bruce Fields8c233cf2005-10-13 16:54:27 -04005354 } else
5355 status = -EOPNOTSUPP;
J. Bruce Fields029d1052005-06-22 17:16:22 +00005356
5357out:
5358 return status;
5359}
5360
Linus Torvalds1da177e2005-04-16 15:20:36 -07005361static int
5362decode_savefh(struct xdr_stream *xdr)
5363{
5364 return decode_op_hdr(xdr, OP_SAVEFH);
5365}
5366
Benny Halevy9e9ecc02009-04-01 09:22:00 -04005367static int decode_setattr(struct xdr_stream *xdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005368{
Al Viro8687b632006-10-19 23:28:48 -07005369 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005370 uint32_t bmlen;
5371 int status;
5372
Linus Torvalds1da177e2005-04-16 15:20:36 -07005373 status = decode_op_hdr(xdr, OP_SETATTR);
5374 if (status)
5375 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03005376 p = xdr_inline_decode(xdr, 4);
5377 if (unlikely(!p))
5378 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03005379 bmlen = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03005380 p = xdr_inline_decode(xdr, bmlen << 2);
5381 if (likely(p))
5382 return 0;
5383out_overflow:
5384 print_overflow_msg(__func__, xdr);
5385 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005386}
5387
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04005388static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005389{
Al Viro8687b632006-10-19 23:28:48 -07005390 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005391 uint32_t opnum;
5392 int32_t nfserr;
5393
Benny Halevyc0eae662009-08-14 17:20:14 +03005394 p = xdr_inline_decode(xdr, 8);
5395 if (unlikely(!p))
5396 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03005397 opnum = be32_to_cpup(p++);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005398 if (opnum != OP_SETCLIENTID) {
Chuck Leverfe82a182007-09-11 18:01:10 -04005399 dprintk("nfs: decode_setclientid: Server returned operation"
Andy Adamson6c0195a2008-12-23 16:06:15 -05005400 " %d\n", opnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005401 return -EIO;
5402 }
Benny Halevycccddf42009-08-14 17:20:19 +03005403 nfserr = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005404 if (nfserr == NFS_OK) {
Benny Halevyc0eae662009-08-14 17:20:14 +03005405 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
5406 if (unlikely(!p))
5407 goto out_overflow;
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04005408 p = xdr_decode_hyper(p, &res->clientid);
5409 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005410 } else if (nfserr == NFSERR_CLID_INUSE) {
5411 uint32_t len;
5412
5413 /* skip netid string */
Benny Halevyc0eae662009-08-14 17:20:14 +03005414 p = xdr_inline_decode(xdr, 4);
5415 if (unlikely(!p))
5416 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03005417 len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03005418 p = xdr_inline_decode(xdr, len);
5419 if (unlikely(!p))
5420 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005421
5422 /* skip uaddr string */
Benny Halevyc0eae662009-08-14 17:20:14 +03005423 p = xdr_inline_decode(xdr, 4);
5424 if (unlikely(!p))
5425 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03005426 len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03005427 p = xdr_inline_decode(xdr, len);
5428 if (unlikely(!p))
5429 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005430 return -NFSERR_CLID_INUSE;
5431 } else
Benny Halevy856dff32008-03-31 17:39:06 +03005432 return nfs4_stat_to_errno(nfserr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005433
5434 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03005435out_overflow:
5436 print_overflow_msg(__func__, xdr);
5437 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005438}
5439
5440static int decode_setclientid_confirm(struct xdr_stream *xdr)
5441{
5442 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
5443}
5444
Anna Schumaker9137bdf2014-05-06 09:12:25 -04005445static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005446{
Al Viro8687b632006-10-19 23:28:48 -07005447 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005448 int status;
5449
5450 status = decode_op_hdr(xdr, OP_WRITE);
5451 if (status)
5452 return status;
5453
Trond Myklebust2f2c63b2012-06-08 11:56:09 -04005454 p = xdr_inline_decode(xdr, 8);
Benny Halevyc0eae662009-08-14 17:20:14 +03005455 if (unlikely(!p))
5456 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03005457 res->count = be32_to_cpup(p++);
5458 res->verf->committed = be32_to_cpup(p++);
Trond Myklebust2f2c63b2012-06-08 11:56:09 -04005459 return decode_write_verifier(xdr, &res->verf->verifier);
Benny Halevyc0eae662009-08-14 17:20:14 +03005460out_overflow:
5461 print_overflow_msg(__func__, xdr);
5462 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005463}
5464
5465static int decode_delegreturn(struct xdr_stream *xdr)
5466{
5467 return decode_op_hdr(xdr, OP_DELEGRETURN);
5468}
5469
Chuck Leverfb15b262013-03-16 15:54:34 -04005470static int decode_secinfo_gss(struct xdr_stream *xdr,
5471 struct nfs4_secinfo4 *flavor)
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005472{
Chuck Leverfb15b262013-03-16 15:54:34 -04005473 u32 oid_len;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005474 __be32 *p;
5475
5476 p = xdr_inline_decode(xdr, 4);
5477 if (unlikely(!p))
5478 goto out_overflow;
Chuck Leverfb15b262013-03-16 15:54:34 -04005479 oid_len = be32_to_cpup(p);
5480 if (oid_len > GSS_OID_MAX_LEN)
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005481 goto out_err;
5482
Chuck Leverfb15b262013-03-16 15:54:34 -04005483 p = xdr_inline_decode(xdr, oid_len);
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005484 if (unlikely(!p))
5485 goto out_overflow;
Chuck Leverfb15b262013-03-16 15:54:34 -04005486 memcpy(flavor->flavor_info.oid.data, p, oid_len);
5487 flavor->flavor_info.oid.len = oid_len;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005488
5489 p = xdr_inline_decode(xdr, 8);
5490 if (unlikely(!p))
5491 goto out_overflow;
Chuck Leverfb15b262013-03-16 15:54:34 -04005492 flavor->flavor_info.qop = be32_to_cpup(p++);
5493 flavor->flavor_info.service = be32_to_cpup(p);
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005494
5495 return 0;
5496
5497out_overflow:
5498 print_overflow_msg(__func__, xdr);
5499 return -EIO;
5500out_err:
5501 return -EINVAL;
5502}
5503
Bryan Schumaker31e4dda2012-04-27 13:27:38 -04005504static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005505{
Chuck Leverfb15b262013-03-16 15:54:34 -04005506 struct nfs4_secinfo4 *sec_flavor;
5507 unsigned int i, num_flavors;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005508 int status;
5509 __be32 *p;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005510
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005511 p = xdr_inline_decode(xdr, 4);
5512 if (unlikely(!p))
5513 goto out_overflow;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005514
Bryan Schumakerc3dfc282011-04-13 14:31:31 -04005515 res->flavors->num_flavors = 0;
5516 num_flavors = be32_to_cpup(p);
5517
5518 for (i = 0; i < num_flavors; i++) {
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005519 sec_flavor = &res->flavors->flavors[i];
Bryan Schumakerc3dfc282011-04-13 14:31:31 -04005520 if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005521 break;
5522
5523 p = xdr_inline_decode(xdr, 4);
5524 if (unlikely(!p))
5525 goto out_overflow;
5526 sec_flavor->flavor = be32_to_cpup(p);
5527
5528 if (sec_flavor->flavor == RPC_AUTH_GSS) {
Bryan Schumaker613e9012011-04-27 15:28:44 -04005529 status = decode_secinfo_gss(xdr, sec_flavor);
5530 if (status)
5531 goto out;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005532 }
Bryan Schumakerc3dfc282011-04-13 14:31:31 -04005533 res->flavors->num_flavors++;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005534 }
5535
Bryan Schumaker31e4dda2012-04-27 13:27:38 -04005536 status = 0;
Bryan Schumaker613e9012011-04-27 15:28:44 -04005537out:
5538 return status;
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00005539out_overflow:
5540 print_overflow_msg(__func__, xdr);
5541 return -EIO;
5542}
5543
Bryan Schumaker31e4dda2012-04-27 13:27:38 -04005544static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5545{
5546 int status = decode_op_hdr(xdr, OP_SECINFO);
5547 if (status)
5548 return status;
5549 return decode_secinfo_common(xdr, res);
5550}
5551
Benny Halevy99fe60d2009-04-01 09:22:29 -04005552#if defined(CONFIG_NFS_V4_1)
Bryan Schumaker31e4dda2012-04-27 13:27:38 -04005553static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
5554{
5555 int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
5556 if (status)
5557 return status;
5558 return decode_secinfo_common(xdr, res);
5559}
5560
Weston Andros Adamson2031cd12013-08-13 16:37:32 -04005561static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
5562{
5563 __be32 *p;
5564 uint32_t bitmap_words;
5565 unsigned int i;
5566
5567 p = xdr_inline_decode(xdr, 4);
5568 bitmap_words = be32_to_cpup(p++);
5569 if (bitmap_words > NFS4_OP_MAP_NUM_WORDS)
5570 return -EIO;
5571 p = xdr_inline_decode(xdr, 4 * bitmap_words);
5572 for (i = 0; i < bitmap_words; i++)
5573 op_map->u.words[i] = be32_to_cpup(p++);
5574
5575 return 0;
5576}
5577
Benny Halevy99fe60d2009-04-01 09:22:29 -04005578static int decode_exchange_id(struct xdr_stream *xdr,
5579 struct nfs41_exchange_id_res *res)
5580{
5581 __be32 *p;
5582 uint32_t dummy;
Benny Halevy2460ba52009-08-14 17:20:10 +03005583 char *dummy_str;
Benny Halevy99fe60d2009-04-01 09:22:29 -04005584 int status;
Weston Andros Adamson7d2ed9a2012-02-17 15:20:26 -05005585 uint32_t impl_id_count;
Benny Halevy99fe60d2009-04-01 09:22:29 -04005586
5587 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
5588 if (status)
5589 return status;
5590
Benny Halevyc0eae662009-08-14 17:20:14 +03005591 p = xdr_inline_decode(xdr, 8);
5592 if (unlikely(!p))
5593 goto out_overflow;
Trond Myklebust32b01312012-05-26 13:41:04 -04005594 xdr_decode_hyper(p, &res->clientid);
Benny Halevyc0eae662009-08-14 17:20:14 +03005595 p = xdr_inline_decode(xdr, 12);
5596 if (unlikely(!p))
5597 goto out_overflow;
Trond Myklebust32b01312012-05-26 13:41:04 -04005598 res->seqid = be32_to_cpup(p++);
5599 res->flags = be32_to_cpup(p++);
Benny Halevy99fe60d2009-04-01 09:22:29 -04005600
Weston Andros Adamson2031cd12013-08-13 16:37:32 -04005601 res->state_protect.how = be32_to_cpup(p);
5602 switch (res->state_protect.how) {
5603 case SP4_NONE:
5604 break;
5605 case SP4_MACH_CRED:
5606 status = decode_op_map(xdr, &res->state_protect.enforce);
5607 if (status)
5608 return status;
5609 status = decode_op_map(xdr, &res->state_protect.allow);
5610 if (status)
5611 return status;
5612 break;
5613 default:
5614 WARN_ON_ONCE(1);
Benny Halevy99fe60d2009-04-01 09:22:29 -04005615 return -EIO;
Weston Andros Adamson2031cd12013-08-13 16:37:32 -04005616 }
Benny Halevy99fe60d2009-04-01 09:22:29 -04005617
Chuck Leveracdeb692012-05-21 22:46:16 -04005618 /* server_owner4.so_minor_id */
Benny Halevyc0eae662009-08-14 17:20:14 +03005619 p = xdr_inline_decode(xdr, 8);
5620 if (unlikely(!p))
5621 goto out_overflow;
Chuck Leveracdeb692012-05-21 22:46:16 -04005622 p = xdr_decode_hyper(p, &res->server_owner->minor_id);
Benny Halevy99fe60d2009-04-01 09:22:29 -04005623
Chuck Leveracdeb692012-05-21 22:46:16 -04005624 /* server_owner4.so_major_id */
Benny Halevy2460ba52009-08-14 17:20:10 +03005625 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5626 if (unlikely(status))
5627 return status;
Weston Andros Adamson78fe0f42011-05-31 19:05:47 -04005628 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5629 return -EIO;
Chuck Leveracdeb692012-05-21 22:46:16 -04005630 memcpy(res->server_owner->major_id, dummy_str, dummy);
5631 res->server_owner->major_id_sz = dummy;
Weston Andros Adamson78fe0f42011-05-31 19:05:47 -04005632
Chuck Leveracdeb692012-05-21 22:46:16 -04005633 /* server_scope4 */
5634 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5635 if (unlikely(status))
5636 return status;
5637 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5638 return -EIO;
Weston Andros Adamson78fe0f42011-05-31 19:05:47 -04005639 memcpy(res->server_scope->server_scope, dummy_str, dummy);
5640 res->server_scope->server_scope_sz = dummy;
5641
Weston Andros Adamson7d2ed9a2012-02-17 15:20:26 -05005642 /* Implementation Id */
5643 p = xdr_inline_decode(xdr, 4);
5644 if (unlikely(!p))
5645 goto out_overflow;
5646 impl_id_count = be32_to_cpup(p++);
Benny Halevy99fe60d2009-04-01 09:22:29 -04005647
Weston Andros Adamson7d2ed9a2012-02-17 15:20:26 -05005648 if (impl_id_count) {
5649 /* nii_domain */
5650 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5651 if (unlikely(status))
5652 return status;
5653 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5654 return -EIO;
5655 memcpy(res->impl_id->domain, dummy_str, dummy);
5656
5657 /* nii_name */
5658 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
5659 if (unlikely(status))
5660 return status;
5661 if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
5662 return -EIO;
5663 memcpy(res->impl_id->name, dummy_str, dummy);
5664
5665 /* nii_date */
5666 p = xdr_inline_decode(xdr, 12);
5667 if (unlikely(!p))
5668 goto out_overflow;
5669 p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
5670 res->impl_id->date.nseconds = be32_to_cpup(p);
5671
5672 /* if there's more than one entry, ignore the rest */
5673 }
Benny Halevy99fe60d2009-04-01 09:22:29 -04005674 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03005675out_overflow:
5676 print_overflow_msg(__func__, xdr);
5677 return -EIO;
Benny Halevy99fe60d2009-04-01 09:22:29 -04005678}
Andy Adamsonfc931582009-04-01 09:22:31 -04005679
5680static int decode_chan_attrs(struct xdr_stream *xdr,
5681 struct nfs4_channel_attrs *attrs)
5682{
5683 __be32 *p;
Benny Halevyc9c30dd2011-06-11 17:08:39 -04005684 u32 nr_attrs, val;
Andy Adamsonfc931582009-04-01 09:22:31 -04005685
Benny Halevyc0eae662009-08-14 17:20:14 +03005686 p = xdr_inline_decode(xdr, 28);
5687 if (unlikely(!p))
5688 goto out_overflow;
Benny Halevyc9c30dd2011-06-11 17:08:39 -04005689 val = be32_to_cpup(p++); /* headerpadsz */
5690 if (val)
5691 return -EINVAL; /* no support for header padding yet */
Benny Halevy6f723f72009-08-14 17:19:37 +03005692 attrs->max_rqst_sz = be32_to_cpup(p++);
5693 attrs->max_resp_sz = be32_to_cpup(p++);
5694 attrs->max_resp_sz_cached = be32_to_cpup(p++);
5695 attrs->max_ops = be32_to_cpup(p++);
5696 attrs->max_reqs = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03005697 nr_attrs = be32_to_cpup(p);
Andy Adamsonfc931582009-04-01 09:22:31 -04005698 if (unlikely(nr_attrs > 1)) {
Weston Andros Adamsona0308892012-01-26 13:32:23 -05005699 printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
5700 "count %u\n", __func__, nr_attrs);
Andy Adamsonfc931582009-04-01 09:22:31 -04005701 return -EINVAL;
5702 }
Benny Halevyc0eae662009-08-14 17:20:14 +03005703 if (nr_attrs == 1) {
5704 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
5705 if (unlikely(!p))
5706 goto out_overflow;
5707 }
Andy Adamsonfc931582009-04-01 09:22:31 -04005708 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03005709out_overflow:
5710 print_overflow_msg(__func__, xdr);
5711 return -EIO;
Andy Adamsonfc931582009-04-01 09:22:31 -04005712}
5713
Benny Halevye78291e2009-08-14 17:20:00 +03005714static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
5715{
5716 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
Andy Adamsonfc931582009-04-01 09:22:31 -04005717}
5718
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04005719static int decode_bind_conn_to_session(struct xdr_stream *xdr,
5720 struct nfs41_bind_conn_to_session_res *res)
5721{
5722 __be32 *p;
5723 int status;
5724
5725 status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
5726 if (!status)
Trond Myklebust71a097c2015-02-18 09:27:18 -08005727 status = decode_sessionid(xdr, &res->sessionid);
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04005728 if (unlikely(status))
5729 return status;
5730
5731 /* dir flags, rdma mode bool */
5732 p = xdr_inline_decode(xdr, 8);
5733 if (unlikely(!p))
5734 goto out_overflow;
5735
5736 res->dir = be32_to_cpup(p++);
5737 if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
5738 return -EIO;
5739 if (be32_to_cpup(p) == 0)
5740 res->use_conn_in_rdma_mode = false;
5741 else
5742 res->use_conn_in_rdma_mode = true;
5743
5744 return 0;
5745out_overflow:
5746 print_overflow_msg(__func__, xdr);
5747 return -EIO;
5748}
5749
Andy Adamsonfc931582009-04-01 09:22:31 -04005750static int decode_create_session(struct xdr_stream *xdr,
5751 struct nfs41_create_session_res *res)
5752{
5753 __be32 *p;
5754 int status;
Andy Adamsonfc931582009-04-01 09:22:31 -04005755
5756 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
Benny Halevye78291e2009-08-14 17:20:00 +03005757 if (!status)
Trond Myklebust79969dd2015-02-18 11:30:18 -08005758 status = decode_sessionid(xdr, &res->sessionid);
Benny Halevye78291e2009-08-14 17:20:00 +03005759 if (unlikely(status))
Andy Adamsonfc931582009-04-01 09:22:31 -04005760 return status;
5761
Andy Adamsonfc931582009-04-01 09:22:31 -04005762 /* seqid, flags */
Benny Halevyc0eae662009-08-14 17:20:14 +03005763 p = xdr_inline_decode(xdr, 8);
5764 if (unlikely(!p))
5765 goto out_overflow;
Trond Myklebust79969dd2015-02-18 11:30:18 -08005766 res->seqid = be32_to_cpup(p++);
5767 res->flags = be32_to_cpup(p);
Andy Adamsonfc931582009-04-01 09:22:31 -04005768
5769 /* Channel attributes */
Trond Myklebust79969dd2015-02-18 11:30:18 -08005770 status = decode_chan_attrs(xdr, &res->fc_attrs);
Andy Adamsonfc931582009-04-01 09:22:31 -04005771 if (!status)
Trond Myklebust79969dd2015-02-18 11:30:18 -08005772 status = decode_chan_attrs(xdr, &res->bc_attrs);
Andy Adamsonfc931582009-04-01 09:22:31 -04005773 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03005774out_overflow:
5775 print_overflow_msg(__func__, xdr);
5776 return -EIO;
Andy Adamsonfc931582009-04-01 09:22:31 -04005777}
Andy Adamson0f3e66c2009-04-01 09:22:34 -04005778
5779static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
5780{
5781 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
5782}
Ricardo Labiaga180197532009-12-05 16:08:40 -05005783
Trond Myklebust66245532012-05-25 17:18:09 -04005784static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
5785{
5786 return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
5787}
5788
Ricardo Labiaga180197532009-12-05 16:08:40 -05005789static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
5790{
5791 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
5792}
Benny Halevy99fe60d2009-04-01 09:22:29 -04005793#endif /* CONFIG_NFS_V4_1 */
5794
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005795static int decode_sequence(struct xdr_stream *xdr,
5796 struct nfs4_sequence_res *res,
5797 struct rpc_rqst *rqstp)
5798{
5799#if defined(CONFIG_NFS_V4_1)
Trond Myklebuste3725ec2012-11-16 12:25:01 -05005800 struct nfs4_session *session;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005801 struct nfs4_sessionid id;
5802 u32 dummy;
5803 int status;
5804 __be32 *p;
5805
Trond Myklebuste3725ec2012-11-16 12:25:01 -05005806 if (res->sr_slot == NULL)
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005807 return 0;
Chuck Lever3bd23842013-08-09 12:49:19 -04005808 if (!res->sr_slot->table->session)
5809 return 0;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005810
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005811 status = decode_op_hdr(xdr, OP_SEQUENCE);
Benny Halevye78291e2009-08-14 17:20:00 +03005812 if (!status)
5813 status = decode_sessionid(xdr, &id);
5814 if (unlikely(status))
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005815 goto out_err;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005816
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005817 /*
5818 * If the server returns different values for sessionID, slotID or
5819 * sequence number, the server is looney tunes.
5820 */
Trond Myklebustfdcb4572010-02-08 09:32:40 -05005821 status = -EREMOTEIO;
Trond Myklebuste3725ec2012-11-16 12:25:01 -05005822 session = res->sr_slot->table->session;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005823
Trond Myklebuste3725ec2012-11-16 12:25:01 -05005824 if (memcmp(id.data, session->sess_id.data,
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005825 NFS4_MAX_SESSIONID_LEN)) {
5826 dprintk("%s Invalid session id\n", __func__);
5827 goto out_err;
5828 }
Benny Halevye78291e2009-08-14 17:20:00 +03005829
Benny Halevyc0eae662009-08-14 17:20:14 +03005830 p = xdr_inline_decode(xdr, 20);
5831 if (unlikely(!p))
5832 goto out_overflow;
Benny Halevye78291e2009-08-14 17:20:00 +03005833
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005834 /* seqid */
Benny Halevy6f723f72009-08-14 17:19:37 +03005835 dummy = be32_to_cpup(p++);
Benny Halevydfb4f3092010-09-24 09:17:01 -04005836 if (dummy != res->sr_slot->seq_nr) {
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005837 dprintk("%s Invalid sequence number\n", __func__);
5838 goto out_err;
5839 }
5840 /* slot id */
Benny Halevy6f723f72009-08-14 17:19:37 +03005841 dummy = be32_to_cpup(p++);
Trond Myklebustdf2fabf2012-11-16 12:45:06 -05005842 if (dummy != res->sr_slot->slot_nr) {
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005843 dprintk("%s Invalid slot id\n", __func__);
5844 goto out_err;
5845 }
Trond Myklebustda0507b2012-11-20 18:10:30 -05005846 /* highest slot id */
5847 res->sr_highest_slotid = be32_to_cpup(p++);
Trond Myklebust464ee9f2012-11-20 12:49:27 -05005848 /* target highest slot id */
5849 res->sr_target_highest_slotid = be32_to_cpup(p++);
Alexandros Batsakis0629e372009-12-05 13:46:14 -05005850 /* result flags */
5851 res->sr_status_flags = be32_to_cpup(p);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005852 status = 0;
5853out_err:
5854 res->sr_status = status;
5855 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03005856out_overflow:
5857 print_overflow_msg(__func__, xdr);
5858 status = -EIO;
5859 goto out_err;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005860#else /* CONFIG_NFS_V4_1 */
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005861 return 0;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04005862#endif /* CONFIG_NFS_V4_1 */
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005863}
5864
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005865#if defined(CONFIG_NFS_V4_1)
Trond Myklebust93b717f2016-05-16 17:42:43 -04005866static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
5867{
5868 stateid->type = NFS4_LAYOUT_STATEID_TYPE;
5869 return decode_stateid(xdr, stateid);
5870}
5871
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005872static int decode_getdeviceinfo(struct xdr_stream *xdr,
Trond Myklebust4e590802015-03-09 14:01:25 -04005873 struct nfs4_getdeviceinfo_res *res)
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005874{
Trond Myklebust4e590802015-03-09 14:01:25 -04005875 struct pnfs_device *pdev = res->pdev;
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005876 __be32 *p;
5877 uint32_t len, type;
5878 int status;
5879
5880 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
5881 if (status) {
5882 if (status == -ETOOSMALL) {
5883 p = xdr_inline_decode(xdr, 4);
5884 if (unlikely(!p))
5885 goto out_overflow;
5886 pdev->mincount = be32_to_cpup(p);
5887 dprintk("%s: Min count too small. mincnt = %u\n",
5888 __func__, pdev->mincount);
5889 }
5890 return status;
5891 }
5892
5893 p = xdr_inline_decode(xdr, 8);
5894 if (unlikely(!p))
5895 goto out_overflow;
5896 type = be32_to_cpup(p++);
5897 if (type != pdev->layout_type) {
5898 dprintk("%s: layout mismatch req: %u pdev: %u\n",
5899 __func__, pdev->layout_type, type);
5900 return -EINVAL;
5901 }
5902 /*
5903 * Get the length of the opaque device_addr4. xdr_read_pages places
5904 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
5905 * and places the remaining xdr data in xdr_buf->tail
5906 */
5907 pdev->mincount = be32_to_cpup(p);
Trond Myklebust13fe4ba2012-08-01 14:21:12 -04005908 if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
5909 goto out_overflow;
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005910
5911 /* Parse notification bitmap, verifying that it is zero. */
5912 p = xdr_inline_decode(xdr, 4);
5913 if (unlikely(!p))
5914 goto out_overflow;
5915 len = be32_to_cpup(p);
5916 if (len) {
Chuck Leveread00592010-12-14 14:58:21 +00005917 uint32_t i;
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005918
5919 p = xdr_inline_decode(xdr, 4 * len);
5920 if (unlikely(!p))
5921 goto out_overflow;
Christoph Hellwig84c9dee2014-09-10 17:37:28 -07005922
Trond Myklebust4e590802015-03-09 14:01:25 -04005923 res->notification = be32_to_cpup(p++);
Christoph Hellwig84c9dee2014-09-10 17:37:28 -07005924 for (i = 1; i < len; i++) {
5925 if (be32_to_cpup(p++)) {
5926 dprintk("%s: unsupported notification\n",
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005927 __func__);
5928 return -EIO;
5929 }
5930 }
5931 }
5932 return 0;
5933out_overflow:
5934 print_overflow_msg(__func__, xdr);
5935 return -EIO;
5936}
5937
5938static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5939 struct nfs4_layoutget_res *res)
5940{
5941 __be32 *p;
5942 int status;
5943 u32 layout_count;
Trond Myklebust64bd5772012-06-20 22:35:05 -04005944 u32 recvd;
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005945
5946 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5947 if (status)
5948 return status;
Trond Myklebustea9d23f2012-03-04 18:13:56 -05005949 p = xdr_inline_decode(xdr, 4);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005950 if (unlikely(!p))
5951 goto out_overflow;
Trond Myklebustea9d23f2012-03-04 18:13:56 -05005952 res->return_on_close = be32_to_cpup(p);
Trond Myklebust93b717f2016-05-16 17:42:43 -04005953 decode_layout_stateid(xdr, &res->stateid);
Trond Myklebustea9d23f2012-03-04 18:13:56 -05005954 p = xdr_inline_decode(xdr, 4);
5955 if (unlikely(!p))
5956 goto out_overflow;
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005957 layout_count = be32_to_cpup(p);
5958 if (!layout_count) {
5959 dprintk("%s: server responded with empty layout array\n",
5960 __func__);
5961 return -EINVAL;
5962 }
5963
Weston Andros Adamson35124a02011-03-24 16:48:21 -04005964 p = xdr_inline_decode(xdr, 28);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005965 if (unlikely(!p))
5966 goto out_overflow;
5967 p = xdr_decode_hyper(p, &res->range.offset);
5968 p = xdr_decode_hyper(p, &res->range.length);
5969 res->range.iomode = be32_to_cpup(p++);
5970 res->type = be32_to_cpup(p++);
Weston Andros Adamson35124a02011-03-24 16:48:21 -04005971 res->layoutp->len = be32_to_cpup(p);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005972
5973 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5974 __func__,
5975 (unsigned long)res->range.offset,
5976 (unsigned long)res->range.length,
5977 res->range.iomode,
5978 res->type,
Weston Andros Adamson35124a02011-03-24 16:48:21 -04005979 res->layoutp->len);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005980
Trond Myklebust64bd5772012-06-20 22:35:05 -04005981 recvd = xdr_read_pages(xdr, res->layoutp->len);
Weston Andros Adamson35124a02011-03-24 16:48:21 -04005982 if (res->layoutp->len > recvd) {
5983 dprintk("NFS: server cheating in layoutget reply: "
5984 "layout len %u > recvd %u\n",
5985 res->layoutp->len, recvd);
5986 return -EINVAL;
5987 }
5988
Andy Adamsonb1f69b72010-10-20 00:18:03 -04005989 if (layout_count > 1) {
5990 /* We only handle a length one array at the moment. Any
5991 * further entries are just ignored. Note that this means
5992 * the client may see a response that is less than the
5993 * minimum it requested.
5994 */
5995 dprintk("%s: server responded with %d layouts, dropping tail\n",
5996 __func__, layout_count);
5997 }
5998
5999 return 0;
6000out_overflow:
6001 print_overflow_msg(__func__, xdr);
6002 return -EIO;
6003}
Andy Adamson863a3c62011-03-23 13:27:54 +00006004
Benny Halevycbe82602011-05-22 19:52:37 +03006005static int decode_layoutreturn(struct xdr_stream *xdr,
6006 struct nfs4_layoutreturn_res *res)
6007{
6008 __be32 *p;
6009 int status;
6010
6011 status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
6012 if (status)
6013 return status;
6014 p = xdr_inline_decode(xdr, 4);
6015 if (unlikely(!p))
6016 goto out_overflow;
6017 res->lrs_present = be32_to_cpup(p);
6018 if (res->lrs_present)
Trond Myklebust93b717f2016-05-16 17:42:43 -04006019 status = decode_layout_stateid(xdr, &res->stateid);
Benny Halevycbe82602011-05-22 19:52:37 +03006020 return status;
6021out_overflow:
6022 print_overflow_msg(__func__, xdr);
6023 return -EIO;
6024}
6025
Andy Adamson863a3c62011-03-23 13:27:54 +00006026static int decode_layoutcommit(struct xdr_stream *xdr,
6027 struct rpc_rqst *req,
6028 struct nfs4_layoutcommit_res *res)
6029{
6030 __be32 *p;
6031 __u32 sizechanged;
6032 int status;
6033
6034 status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
Andy Adamsondb29c082011-07-30 20:52:38 -04006035 res->status = status;
Andy Adamson863a3c62011-03-23 13:27:54 +00006036 if (status)
6037 return status;
6038
6039 p = xdr_inline_decode(xdr, 4);
6040 if (unlikely(!p))
6041 goto out_overflow;
6042 sizechanged = be32_to_cpup(p);
6043
6044 if (sizechanged) {
6045 /* throw away new size */
6046 p = xdr_inline_decode(xdr, 8);
6047 if (unlikely(!p))
6048 goto out_overflow;
6049 }
6050 return 0;
6051out_overflow:
6052 print_overflow_msg(__func__, xdr);
6053 return -EIO;
6054}
Bryan Schumaker7d974792011-06-02 14:59:08 -04006055
6056static int decode_test_stateid(struct xdr_stream *xdr,
6057 struct nfs41_test_stateid_res *res)
6058{
6059 __be32 *p;
6060 int status;
6061 int num_res;
6062
6063 status = decode_op_hdr(xdr, OP_TEST_STATEID);
6064 if (status)
6065 return status;
6066
6067 p = xdr_inline_decode(xdr, 4);
6068 if (unlikely(!p))
6069 goto out_overflow;
6070 num_res = be32_to_cpup(p++);
6071 if (num_res != 1)
6072 goto out;
6073
6074 p = xdr_inline_decode(xdr, 4);
6075 if (unlikely(!p))
6076 goto out_overflow;
6077 res->status = be32_to_cpup(p++);
Bryan Schumaker1cab0652012-01-31 10:39:29 -05006078
6079 return status;
Bryan Schumaker7d974792011-06-02 14:59:08 -04006080out_overflow:
6081 print_overflow_msg(__func__, xdr);
6082out:
6083 return -EIO;
6084}
Bryan Schumaker9aeda352011-06-02 14:59:09 -04006085
6086static int decode_free_stateid(struct xdr_stream *xdr,
6087 struct nfs41_free_stateid_res *res)
6088{
Andy Adamson9f79fb42013-09-10 12:56:29 -04006089 res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
Bryan Schumaker9aeda352011-06-02 14:59:09 -04006090 return res->status;
Bryan Schumaker9aeda352011-06-02 14:59:09 -04006091}
Andy Adamsonb1f69b72010-10-20 00:18:03 -04006092#endif /* CONFIG_NFS_V4_1 */
6093
Linus Torvalds1da177e2005-04-16 15:20:36 -07006094/*
Benny Halevy49c25592008-12-23 16:06:16 -05006095 * END OF "GENERIC" DECODE ROUTINES.
6096 */
6097
6098/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07006099 * Decode OPEN_DOWNGRADE response
6100 */
Chuck Leverbf269552010-12-14 14:59:29 +00006101static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
6102 struct xdr_stream *xdr,
6103 struct nfs_closeres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006104{
Andy Adamson05d564f2008-12-23 16:06:15 -05006105 struct compound_hdr hdr;
6106 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006107
Chuck Leverbf269552010-12-14 14:59:29 +00006108 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006109 if (status)
6110 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006111 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006112 if (status)
6113 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006114 status = decode_putfh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006115 if (status)
6116 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006117 status = decode_open_downgrade(xdr, res);
Trond Myklebust516a6af2005-10-27 22:12:41 -04006118 if (status != 0)
6119 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05006120 decode_getfattr(xdr, res->fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006121out:
Andy Adamson05d564f2008-12-23 16:06:15 -05006122 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006123}
6124
6125/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07006126 * Decode ACCESS response
6127 */
Chuck Leverbf269552010-12-14 14:59:29 +00006128static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6129 struct nfs4_accessres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006130{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006131 struct compound_hdr hdr;
6132 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05006133
Chuck Leverbf269552010-12-14 14:59:29 +00006134 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006135 if (status)
6136 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006137 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006138 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006139 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006140 status = decode_putfh(xdr);
Trond Myklebust76b32992007-08-10 17:45:11 -04006141 if (status != 0)
6142 goto out;
Weston Andros Adamson6168f622012-09-10 14:00:46 -04006143 status = decode_access(xdr, &res->supported, &res->access);
Trond Myklebust76b32992007-08-10 17:45:11 -04006144 if (status != 0)
6145 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05006146 decode_getfattr(xdr, res->fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006147out:
6148 return status;
6149}
6150
6151/*
6152 * Decode LOOKUP response
6153 */
Chuck Leverbf269552010-12-14 14:59:29 +00006154static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6155 struct nfs4_lookup_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006156{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006157 struct compound_hdr hdr;
6158 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05006159
Chuck Leverbf269552010-12-14 14:59:29 +00006160 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006161 if (status)
6162 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006163 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006164 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006165 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006166 status = decode_putfh(xdr);
6167 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006168 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006169 status = decode_lookup(xdr);
6170 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006171 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006172 status = decode_getfh(xdr, res->fh);
6173 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006174 goto out;
David Quigleyaa9c2662013-05-22 12:50:44 -04006175 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006176out:
6177 return status;
6178}
6179
6180/*
6181 * Decode LOOKUP_ROOT response
6182 */
Chuck Leverbf269552010-12-14 14:59:29 +00006183static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
6184 struct xdr_stream *xdr,
6185 struct nfs4_lookup_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006186{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006187 struct compound_hdr hdr;
6188 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05006189
Chuck Leverbf269552010-12-14 14:59:29 +00006190 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006191 if (status)
6192 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006193 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006194 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006195 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006196 status = decode_putrootfh(xdr);
6197 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006198 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006199 status = decode_getfh(xdr, res->fh);
6200 if (status == 0)
David Quigleyaa9c2662013-05-22 12:50:44 -04006201 status = decode_getfattr_label(xdr, res->fattr,
6202 res->label, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006203out:
6204 return status;
6205}
6206
6207/*
6208 * Decode REMOVE response
6209 */
Chuck Leverbf269552010-12-14 14:59:29 +00006210static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6211 struct nfs_removeres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006212{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006213 struct compound_hdr hdr;
6214 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05006215
Chuck Leverbf269552010-12-14 14:59:29 +00006216 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006217 if (status)
6218 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006219 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006220 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006221 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006222 status = decode_putfh(xdr);
6223 if (status)
Trond Myklebust16e42952005-10-27 22:12:44 -04006224 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006225 status = decode_remove(xdr, &res->cinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006226out:
6227 return status;
6228}
6229
6230/*
6231 * Decode RENAME response
6232 */
Chuck Leverbf269552010-12-14 14:59:29 +00006233static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6234 struct nfs_renameres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006235{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006236 struct compound_hdr hdr;
6237 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05006238
Chuck Leverbf269552010-12-14 14:59:29 +00006239 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006240 if (status)
6241 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006242 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006243 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006244 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006245 status = decode_putfh(xdr);
6246 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006247 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006248 status = decode_savefh(xdr);
6249 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006250 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006251 status = decode_putfh(xdr);
6252 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006253 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006254 status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006255out:
6256 return status;
6257}
6258
6259/*
6260 * Decode LINK response
6261 */
Chuck Leverbf269552010-12-14 14:59:29 +00006262static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6263 struct nfs4_link_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006264{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006265 struct compound_hdr hdr;
6266 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05006267
Chuck Leverbf269552010-12-14 14:59:29 +00006268 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006269 if (status)
6270 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006271 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006272 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006273 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006274 status = decode_putfh(xdr);
6275 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006276 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006277 status = decode_savefh(xdr);
6278 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006279 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006280 status = decode_putfh(xdr);
6281 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006282 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006283 status = decode_link(xdr, &res->cinfo);
6284 if (status)
Trond Myklebust91ba2ee2005-10-27 22:12:42 -04006285 goto out;
6286 /*
6287 * Note order: OP_LINK leaves the directory as the current
6288 * filehandle.
6289 */
Chuck Leverbf269552010-12-14 14:59:29 +00006290 status = decode_restorefh(xdr);
6291 if (status)
Trond Myklebust91ba2ee2005-10-27 22:12:42 -04006292 goto out;
David Quigleyaa9c2662013-05-22 12:50:44 -04006293 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006294out:
6295 return status;
6296}
6297
6298/*
6299 * Decode CREATE response
6300 */
Chuck Leverbf269552010-12-14 14:59:29 +00006301static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6302 struct nfs4_create_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006303{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006304 struct compound_hdr hdr;
6305 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05006306
Chuck Leverbf269552010-12-14 14:59:29 +00006307 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006308 if (status)
6309 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006310 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006311 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006312 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006313 status = decode_putfh(xdr);
6314 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006315 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006316 status = decode_create(xdr, &res->dir_cinfo);
6317 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006318 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006319 status = decode_getfh(xdr, res->fh);
6320 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006321 goto out;
David Quigleyaa9c2662013-05-22 12:50:44 -04006322 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006323out:
6324 return status;
6325}
6326
6327/*
6328 * Decode SYMLINK response
6329 */
Chuck Leverbf269552010-12-14 14:59:29 +00006330static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6331 struct nfs4_create_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006332{
Chuck Leverbf269552010-12-14 14:59:29 +00006333 return nfs4_xdr_dec_create(rqstp, xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006334}
6335
6336/*
6337 * Decode GETATTR response
6338 */
Chuck Leverbf269552010-12-14 14:59:29 +00006339static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6340 struct nfs4_getattr_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006341{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006342 struct compound_hdr hdr;
6343 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05006344
Chuck Leverbf269552010-12-14 14:59:29 +00006345 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006346 if (status)
6347 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006348 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006349 if (status)
6350 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006351 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006352 if (status)
6353 goto out;
David Quigleyaa9c2662013-05-22 12:50:44 -04006354 status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006355out:
6356 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006357}
6358
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006359/*
6360 * Encode an SETACL request
6361 */
Chuck Lever9f06c712010-12-14 14:59:18 +00006362static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
6363 struct nfs_setaclargs *args)
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006364{
Andy Adamson05d564f2008-12-23 16:06:15 -05006365 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04006366 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Andy Adamson05d564f2008-12-23 16:06:15 -05006367 };
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006368
Chuck Lever9f06c712010-12-14 14:59:18 +00006369 encode_compound_hdr(xdr, req, &hdr);
6370 encode_sequence(xdr, &args->seq_args, &hdr);
6371 encode_putfh(xdr, args->fh, &hdr);
6372 encode_setacl(xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05006373 encode_nops(&hdr);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006374}
Andy Adamson05d564f2008-12-23 16:06:15 -05006375
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006376/*
6377 * Decode SETACL response
6378 */
6379static int
Chuck Leverbf269552010-12-14 14:59:29 +00006380nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
Benny Halevy73c403a2009-04-01 09:22:01 -04006381 struct nfs_setaclres *res)
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006382{
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006383 struct compound_hdr hdr;
6384 int status;
6385
Chuck Leverbf269552010-12-14 14:59:29 +00006386 status = decode_compound_hdr(xdr, &hdr);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006387 if (status)
6388 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006389 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006390 if (status)
6391 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006392 status = decode_putfh(xdr);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006393 if (status)
6394 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006395 status = decode_setattr(xdr);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00006396out:
6397 return status;
6398}
Linus Torvalds1da177e2005-04-16 15:20:36 -07006399
6400/*
J. Bruce Fields029d1052005-06-22 17:16:22 +00006401 * Decode GETACL response
6402 */
6403static int
Chuck Leverbf269552010-12-14 14:59:29 +00006404nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
Benny Halevy663c79b2009-04-01 09:21:59 -04006405 struct nfs_getaclres *res)
J. Bruce Fields029d1052005-06-22 17:16:22 +00006406{
J. Bruce Fields029d1052005-06-22 17:16:22 +00006407 struct compound_hdr hdr;
6408 int status;
6409
Trond Myklebust331818f2012-02-03 18:30:53 -05006410 if (res->acl_scratch != NULL) {
6411 void *p = page_address(res->acl_scratch);
6412 xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
6413 }
Chuck Leverbf269552010-12-14 14:59:29 +00006414 status = decode_compound_hdr(xdr, &hdr);
J. Bruce Fields029d1052005-06-22 17:16:22 +00006415 if (status)
6416 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006417 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006418 if (status)
6419 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006420 status = decode_putfh(xdr);
J. Bruce Fields029d1052005-06-22 17:16:22 +00006421 if (status)
6422 goto out;
Andy Adamsonbf118a32011-12-07 11:55:27 -05006423 status = decode_getacl(xdr, rqstp, res);
J. Bruce Fields029d1052005-06-22 17:16:22 +00006424
6425out:
6426 return status;
6427}
6428
6429/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07006430 * Decode CLOSE response
6431 */
Chuck Leverbf269552010-12-14 14:59:29 +00006432static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6433 struct nfs_closeres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006434{
Andy Adamson05d564f2008-12-23 16:06:15 -05006435 struct compound_hdr hdr;
6436 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006437
Chuck Leverbf269552010-12-14 14:59:29 +00006438 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006439 if (status)
6440 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006441 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006442 if (status)
6443 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006444 status = decode_putfh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006445 if (status)
6446 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006447 status = decode_close(xdr, res);
Trond Myklebust516a6af2005-10-27 22:12:41 -04006448 if (status != 0)
6449 goto out;
6450 /*
6451 * Note: Server may do delete on close for this file
6452 * in which case the getattr call will fail with
6453 * an ESTALE error. Shouldn't be a problem,
6454 * though, since fattr->valid will remain unset.
6455 */
Trond Myklebust6926afd2012-01-07 13:22:46 -05006456 decode_getfattr(xdr, res->fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006457out:
Andy Adamson05d564f2008-12-23 16:06:15 -05006458 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006459}
6460
6461/*
6462 * Decode OPEN response
6463 */
Chuck Leverbf269552010-12-14 14:59:29 +00006464static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6465 struct nfs_openres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006466{
Andy Adamson05d564f2008-12-23 16:06:15 -05006467 struct compound_hdr hdr;
6468 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006469
Chuck Leverbf269552010-12-14 14:59:29 +00006470 status = decode_compound_hdr(xdr, &hdr);
Trond Myklebust56ae19f2005-10-27 22:12:40 -04006471 if (status)
6472 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006473 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006474 if (status)
6475 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006476 status = decode_putfh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006477 if (status)
6478 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006479 status = decode_open(xdr, res);
Andy Adamson05d564f2008-12-23 16:06:15 -05006480 if (status)
6481 goto out;
Weston Andros Adamson01913b42012-09-06 15:54:27 -04006482 status = decode_getfh(xdr, &res->fh);
6483 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006484 goto out;
Weston Andros Adamsonae2bb032012-10-02 14:49:52 -07006485 if (res->access_request)
6486 decode_access(xdr, &res->access_supported, &res->access_result);
David Quigleyaa9c2662013-05-22 12:50:44 -04006487 decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006488out:
Andy Adamson05d564f2008-12-23 16:06:15 -05006489 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006490}
6491
6492/*
6493 * Decode OPEN_CONFIRM response
6494 */
Chuck Leverbf269552010-12-14 14:59:29 +00006495static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
6496 struct xdr_stream *xdr,
6497 struct nfs_open_confirmres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006498{
Andy Adamson05d564f2008-12-23 16:06:15 -05006499 struct compound_hdr hdr;
6500 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006501
Chuck Leverbf269552010-12-14 14:59:29 +00006502 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006503 if (status)
6504 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006505 status = decode_putfh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006506 if (status)
6507 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006508 status = decode_open_confirm(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006509out:
Andy Adamson05d564f2008-12-23 16:06:15 -05006510 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006511}
6512
6513/*
6514 * Decode OPEN response
6515 */
Chuck Leverbf269552010-12-14 14:59:29 +00006516static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
6517 struct xdr_stream *xdr,
6518 struct nfs_openres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006519{
Andy Adamson05d564f2008-12-23 16:06:15 -05006520 struct compound_hdr hdr;
6521 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006522
Chuck Leverbf269552010-12-14 14:59:29 +00006523 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006524 if (status)
6525 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006526 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006527 if (status)
6528 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006529 status = decode_putfh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006530 if (status)
6531 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006532 status = decode_open(xdr, res);
Andy Adamson05d564f2008-12-23 16:06:15 -05006533 if (status)
6534 goto out;
Weston Andros Adamsonae2bb032012-10-02 14:49:52 -07006535 if (res->access_request)
6536 decode_access(xdr, &res->access_supported, &res->access_result);
Trond Myklebust6926afd2012-01-07 13:22:46 -05006537 decode_getfattr(xdr, res->f_attr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006538out:
Andy Adamson05d564f2008-12-23 16:06:15 -05006539 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006540}
6541
6542/*
6543 * Decode SETATTR response
6544 */
Chuck Leverbf269552010-12-14 14:59:29 +00006545static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
6546 struct xdr_stream *xdr,
6547 struct nfs_setattrres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006548{
Andy Adamson05d564f2008-12-23 16:06:15 -05006549 struct compound_hdr hdr;
6550 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006551
Chuck Leverbf269552010-12-14 14:59:29 +00006552 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006553 if (status)
6554 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006555 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006556 if (status)
6557 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006558 status = decode_putfh(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006559 if (status)
6560 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006561 status = decode_setattr(xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05006562 if (status)
6563 goto out;
David Quigleyaa9c2662013-05-22 12:50:44 -04006564 decode_getfattr_label(xdr, res->fattr, res->label, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006565out:
Andy Adamson05d564f2008-12-23 16:06:15 -05006566 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006567}
6568
6569/*
6570 * Decode LOCK response
6571 */
Chuck Leverbf269552010-12-14 14:59:29 +00006572static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6573 struct nfs_lock_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006574{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006575 struct compound_hdr hdr;
6576 int status;
6577
Chuck Leverbf269552010-12-14 14:59:29 +00006578 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006579 if (status)
6580 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006581 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006582 if (status)
6583 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006584 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006585 if (status)
6586 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006587 status = decode_lock(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006588out:
6589 return status;
6590}
6591
6592/*
6593 * Decode LOCKT response
6594 */
Chuck Leverbf269552010-12-14 14:59:29 +00006595static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6596 struct nfs_lockt_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006597{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006598 struct compound_hdr hdr;
6599 int status;
6600
Chuck Leverbf269552010-12-14 14:59:29 +00006601 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006602 if (status)
6603 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006604 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006605 if (status)
6606 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006607 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006608 if (status)
6609 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006610 status = decode_lockt(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006611out:
6612 return status;
6613}
6614
6615/*
6616 * Decode LOCKU response
6617 */
Chuck Leverbf269552010-12-14 14:59:29 +00006618static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6619 struct nfs_locku_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006620{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006621 struct compound_hdr hdr;
6622 int status;
6623
Chuck Leverbf269552010-12-14 14:59:29 +00006624 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006625 if (status)
6626 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006627 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006628 if (status)
6629 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006630 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006631 if (status)
6632 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006633 status = decode_locku(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006634out:
6635 return status;
6636}
6637
Chuck Leverbf269552010-12-14 14:59:29 +00006638static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
6639 struct xdr_stream *xdr, void *dummy)
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04006640{
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04006641 struct compound_hdr hdr;
6642 int status;
6643
Chuck Leverbf269552010-12-14 14:59:29 +00006644 status = decode_compound_hdr(xdr, &hdr);
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04006645 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006646 status = decode_release_lockowner(xdr);
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04006647 return status;
6648}
6649
Linus Torvalds1da177e2005-04-16 15:20:36 -07006650/*
6651 * Decode READLINK response
6652 */
Chuck Leverbf269552010-12-14 14:59:29 +00006653static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
6654 struct xdr_stream *xdr,
Benny Halevyf50c7002009-04-01 09:21:55 -04006655 struct nfs4_readlink_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006656{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006657 struct compound_hdr hdr;
6658 int status;
6659
Chuck Leverbf269552010-12-14 14:59:29 +00006660 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006661 if (status)
6662 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006663 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006664 if (status)
6665 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006666 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006667 if (status)
6668 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006669 status = decode_readlink(xdr, rqstp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006670out:
6671 return status;
6672}
6673
6674/*
6675 * Decode READDIR response
6676 */
Chuck Leverbf269552010-12-14 14:59:29 +00006677static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6678 struct nfs4_readdir_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006679{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006680 struct compound_hdr hdr;
6681 int status;
6682
Chuck Leverbf269552010-12-14 14:59:29 +00006683 status = decode_compound_hdr(xdr, &hdr);
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_readdir(xdr, rqstp, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006693out:
6694 return status;
6695}
6696
6697/*
6698 * Decode Read response
6699 */
Chuck Leverbf269552010-12-14 14:59:29 +00006700static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
Anna Schumaker9137bdf2014-05-06 09:12:25 -04006701 struct nfs_pgio_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);
Peng Taoaabff4d2014-08-27 10:47:14 +08006707 res->op_status = hdr.status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006708 if (status)
6709 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006710 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006711 if (status)
6712 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006713 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006714 if (status)
6715 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006716 status = decode_read(xdr, rqstp, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006717 if (!status)
6718 status = res->count;
6719out:
6720 return status;
6721}
6722
6723/*
6724 * Decode WRITE response
6725 */
Chuck Leverbf269552010-12-14 14:59:29 +00006726static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
Anna Schumaker9137bdf2014-05-06 09:12:25 -04006727 struct nfs_pgio_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006728{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006729 struct compound_hdr hdr;
6730 int status;
6731
Chuck Leverbf269552010-12-14 14:59:29 +00006732 status = decode_compound_hdr(xdr, &hdr);
Peng Taoaabff4d2014-08-27 10:47:14 +08006733 res->op_status = hdr.status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006734 if (status)
6735 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006736 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006737 if (status)
6738 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006739 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006740 if (status)
6741 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006742 status = decode_write(xdr, res);
Trond Myklebust4f9838c2005-10-27 22:12:44 -04006743 if (status)
6744 goto out;
Fred Isaman7ffd1062011-03-03 15:13:46 +00006745 if (res->fattr)
Trond Myklebust6926afd2012-01-07 13:22:46 -05006746 decode_getfattr(xdr, res->fattr, res->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006747 if (!status)
6748 status = res->count;
6749out:
6750 return status;
6751}
6752
6753/*
6754 * Decode COMMIT response
6755 */
Chuck Leverbf269552010-12-14 14:59:29 +00006756static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
Fred Isaman0b7c0152012-04-20 14:47:39 -04006757 struct nfs_commitres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006758{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006759 struct compound_hdr hdr;
6760 int status;
6761
Chuck Leverbf269552010-12-14 14:59:29 +00006762 status = decode_compound_hdr(xdr, &hdr);
Peng Taoaabff4d2014-08-27 10:47:14 +08006763 res->op_status = hdr.status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006764 if (status)
6765 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006766 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006767 if (status)
6768 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006769 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006770 if (status)
6771 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006772 status = decode_commit(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006773out:
6774 return status;
6775}
6776
6777/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006778 * Decode FSINFO response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006779 */
Chuck Leverbf269552010-12-14 14:59:29 +00006780static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
Benny Halevy3dda5e42009-04-01 09:21:57 -04006781 struct nfs4_fsinfo_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006782{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006783 struct compound_hdr hdr;
6784 int status;
6785
Chuck Leverbf269552010-12-14 14:59:29 +00006786 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006787 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006788 status = decode_sequence(xdr, &res->seq_res, req);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006789 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006790 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006791 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006792 status = decode_fsinfo(xdr, res->fsinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006793 return status;
6794}
6795
6796/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006797 * Decode PATHCONF response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006798 */
Chuck Leverbf269552010-12-14 14:59:29 +00006799static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
Benny Halevyd45b2982009-04-01 09:21:58 -04006800 struct nfs4_pathconf_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006801{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006802 struct compound_hdr hdr;
6803 int status;
6804
Chuck Leverbf269552010-12-14 14:59:29 +00006805 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006806 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006807 status = decode_sequence(xdr, &res->seq_res, req);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006808 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006809 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006810 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006811 status = decode_pathconf(xdr, res->pathconf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006812 return status;
6813}
6814
6815/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006816 * Decode STATFS response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006817 */
Chuck Leverbf269552010-12-14 14:59:29 +00006818static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
Benny Halevy24ad1482009-04-01 09:21:56 -04006819 struct nfs4_statfs_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006820{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006821 struct compound_hdr hdr;
6822 int status;
6823
Chuck Leverbf269552010-12-14 14:59:29 +00006824 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006825 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006826 status = decode_sequence(xdr, &res->seq_res, req);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006827 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006828 status = decode_putfh(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006829 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006830 status = decode_statfs(xdr, res->fsstat);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006831 return status;
6832}
6833
6834/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006835 * Decode GETATTR_BITMAP response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006836 */
Chuck Leverbf269552010-12-14 14:59:29 +00006837static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
6838 struct xdr_stream *xdr,
6839 struct nfs4_server_caps_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006840{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006841 struct compound_hdr hdr;
6842 int status;
6843
Chuck Leverbf269552010-12-14 14:59:29 +00006844 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006845 if (status)
6846 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006847 status = decode_sequence(xdr, &res->seq_res, req);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006848 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006849 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006850 status = decode_putfh(xdr);
6851 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006852 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006853 status = decode_server_caps(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006854out:
6855 return status;
6856}
6857
6858/*
6859 * Decode RENEW response
6860 */
Chuck Leverbf269552010-12-14 14:59:29 +00006861static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6862 void *__unused)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006863{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006864 struct compound_hdr hdr;
6865 int status;
6866
Chuck Leverbf269552010-12-14 14:59:29 +00006867 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006868 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006869 status = decode_renew(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006870 return status;
6871}
6872
6873/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006874 * Decode SETCLIENTID response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006875 */
Chuck Leverbf269552010-12-14 14:59:29 +00006876static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
6877 struct xdr_stream *xdr,
6878 struct nfs4_setclientid_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006879{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006880 struct compound_hdr hdr;
6881 int status;
6882
Chuck Leverbf269552010-12-14 14:59:29 +00006883 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006884 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006885 status = decode_setclientid(xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006886 return status;
6887}
6888
6889/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006890 * Decode SETCLIENTID_CONFIRM response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006891 */
Chuck Leverbf269552010-12-14 14:59:29 +00006892static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
Chuck Lever83ca7f52013-03-16 15:55:53 -04006893 struct xdr_stream *xdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006894{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006895 struct compound_hdr hdr;
6896 int status;
6897
Chuck Leverbf269552010-12-14 14:59:29 +00006898 status = decode_compound_hdr(xdr, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006899 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00006900 status = decode_setclientid_confirm(xdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006901 return status;
6902}
6903
6904/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006905 * Decode DELEGRETURN response
Linus Torvalds1da177e2005-04-16 15:20:36 -07006906 */
Chuck Leverbf269552010-12-14 14:59:29 +00006907static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
6908 struct xdr_stream *xdr,
6909 struct nfs4_delegreturnres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006910{
Linus Torvalds1da177e2005-04-16 15:20:36 -07006911 struct compound_hdr hdr;
6912 int status;
6913
Chuck Leverbf269552010-12-14 14:59:29 +00006914 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006915 if (status)
6916 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006917 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006918 if (status)
Trond Myklebustfa178f22006-01-03 09:55:38 +01006919 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006920 status = decode_putfh(xdr);
Trond Myklebustfa178f22006-01-03 09:55:38 +01006921 if (status != 0)
6922 goto out;
Trond Myklebuste144cbc2012-04-28 16:05:03 -04006923 status = decode_getfattr(xdr, res->fattr, res->server);
Jeff Layton556ae3b2010-03-21 12:10:36 -04006924 if (status != 0)
6925 goto out;
Trond Myklebuste144cbc2012-04-28 16:05:03 -04006926 status = decode_delegreturn(xdr);
Trond Myklebustfa178f22006-01-03 09:55:38 +01006927out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07006928 return status;
6929}
6930
Trond Myklebust683b57b2006-06-09 09:34:22 -04006931/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006932 * Decode FS_LOCATIONS response
Trond Myklebust683b57b2006-06-09 09:34:22 -04006933 */
Chuck Leverbf269552010-12-14 14:59:29 +00006934static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
6935 struct xdr_stream *xdr,
Benny Halevy22958462009-04-01 09:22:02 -04006936 struct nfs4_fs_locations_res *res)
Trond Myklebust683b57b2006-06-09 09:34:22 -04006937{
Trond Myklebust683b57b2006-06-09 09:34:22 -04006938 struct compound_hdr hdr;
6939 int status;
6940
Chuck Leverbf269552010-12-14 14:59:29 +00006941 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006942 if (status)
6943 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006944 status = decode_sequence(xdr, &res->seq_res, req);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04006945 if (status)
Trond Myklebust683b57b2006-06-09 09:34:22 -04006946 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00006947 status = decode_putfh(xdr);
6948 if (status)
Trond Myklebust683b57b2006-06-09 09:34:22 -04006949 goto out;
Chuck Leverb03d7352013-10-17 14:12:50 -04006950 if (res->migration) {
6951 xdr_enter_page(xdr, PAGE_SIZE);
6952 status = decode_getfattr_generic(xdr,
6953 &res->fs_locations->fattr,
Trond Myklebust8b7e3f42012-01-30 15:43:56 -05006954 NULL, res->fs_locations,
David Quigleyaa9c2662013-05-22 12:50:44 -04006955 NULL, res->fs_locations->server);
Chuck Leverb03d7352013-10-17 14:12:50 -04006956 if (status)
6957 goto out;
6958 if (res->renew)
6959 status = decode_renew(xdr);
6960 } else {
6961 status = decode_lookup(xdr);
6962 if (status)
6963 goto out;
6964 xdr_enter_page(xdr, PAGE_SIZE);
6965 status = decode_getfattr_generic(xdr,
6966 &res->fs_locations->fattr,
6967 NULL, res->fs_locations,
6968 NULL, res->fs_locations->server);
6969 }
Trond Myklebust683b57b2006-06-09 09:34:22 -04006970out:
6971 return status;
6972}
6973
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00006974/*
6975 * Decode SECINFO response
6976 */
6977static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
6978 struct xdr_stream *xdr,
6979 struct nfs4_secinfo_res *res)
6980{
6981 struct compound_hdr hdr;
6982 int status;
6983
6984 status = decode_compound_hdr(xdr, &hdr);
6985 if (status)
6986 goto out;
6987 status = decode_sequence(xdr, &res->seq_res, rqstp);
6988 if (status)
6989 goto out;
6990 status = decode_putfh(xdr);
6991 if (status)
6992 goto out;
6993 status = decode_secinfo(xdr, res);
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00006994out:
6995 return status;
6996}
6997
Chuck Lever44c99932013-10-17 14:13:30 -04006998/*
6999 * Decode FSID_PRESENT response
7000 */
7001static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp,
7002 struct xdr_stream *xdr,
7003 struct nfs4_fsid_present_res *res)
7004{
7005 struct compound_hdr hdr;
7006 int status;
7007
7008 status = decode_compound_hdr(xdr, &hdr);
7009 if (status)
7010 goto out;
7011 status = decode_sequence(xdr, &res->seq_res, rqstp);
7012 if (status)
7013 goto out;
7014 status = decode_putfh(xdr);
7015 if (status)
7016 goto out;
7017 status = decode_getfh(xdr, res->fh);
7018 if (status)
7019 goto out;
7020 if (res->renew)
7021 status = decode_renew(xdr);
7022out:
7023 return status;
7024}
7025
Benny Halevy99fe60d2009-04-01 09:22:29 -04007026#if defined(CONFIG_NFS_V4_1)
7027/*
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04007028 * Decode BIND_CONN_TO_SESSION response
7029 */
7030static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
7031 struct xdr_stream *xdr,
7032 void *res)
7033{
7034 struct compound_hdr hdr;
7035 int status;
7036
7037 status = decode_compound_hdr(xdr, &hdr);
7038 if (!status)
7039 status = decode_bind_conn_to_session(xdr, res);
7040 return status;
7041}
7042
7043/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05007044 * Decode EXCHANGE_ID response
Benny Halevy99fe60d2009-04-01 09:22:29 -04007045 */
Chuck Leverbf269552010-12-14 14:59:29 +00007046static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
7047 struct xdr_stream *xdr,
Benny Halevy99fe60d2009-04-01 09:22:29 -04007048 void *res)
7049{
Benny Halevy99fe60d2009-04-01 09:22:29 -04007050 struct compound_hdr hdr;
7051 int status;
7052
Chuck Leverbf269552010-12-14 14:59:29 +00007053 status = decode_compound_hdr(xdr, &hdr);
Benny Halevy99fe60d2009-04-01 09:22:29 -04007054 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00007055 status = decode_exchange_id(xdr, res);
Benny Halevy99fe60d2009-04-01 09:22:29 -04007056 return status;
7057}
Andy Adamson2050f0c2009-04-01 09:22:30 -04007058
7059/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05007060 * Decode CREATE_SESSION response
Andy Adamsonfc931582009-04-01 09:22:31 -04007061 */
Chuck Leverbf269552010-12-14 14:59:29 +00007062static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
7063 struct xdr_stream *xdr,
Andy Adamsonfc931582009-04-01 09:22:31 -04007064 struct nfs41_create_session_res *res)
7065{
Andy Adamsonfc931582009-04-01 09:22:31 -04007066 struct compound_hdr hdr;
7067 int status;
7068
Chuck Leverbf269552010-12-14 14:59:29 +00007069 status = decode_compound_hdr(xdr, &hdr);
Andy Adamsonfc931582009-04-01 09:22:31 -04007070 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00007071 status = decode_create_session(xdr, res);
Andy Adamsonfc931582009-04-01 09:22:31 -04007072 return status;
7073}
7074
7075/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05007076 * Decode DESTROY_SESSION response
Andy Adamson0f3e66c2009-04-01 09:22:34 -04007077 */
Chuck Leverbf269552010-12-14 14:59:29 +00007078static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
7079 struct xdr_stream *xdr,
7080 void *res)
Andy Adamson0f3e66c2009-04-01 09:22:34 -04007081{
Andy Adamson0f3e66c2009-04-01 09:22:34 -04007082 struct compound_hdr hdr;
7083 int status;
7084
Chuck Leverbf269552010-12-14 14:59:29 +00007085 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson0f3e66c2009-04-01 09:22:34 -04007086 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00007087 status = decode_destroy_session(xdr, res);
Andy Adamson0f3e66c2009-04-01 09:22:34 -04007088 return status;
7089}
7090
7091/*
Trond Myklebust66245532012-05-25 17:18:09 -04007092 * Decode DESTROY_CLIENTID response
7093 */
7094static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
7095 struct xdr_stream *xdr,
7096 void *res)
7097{
7098 struct compound_hdr hdr;
7099 int status;
7100
7101 status = decode_compound_hdr(xdr, &hdr);
7102 if (!status)
7103 status = decode_destroy_clientid(xdr, res);
7104 return status;
7105}
7106
7107/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05007108 * Decode SEQUENCE response
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007109 */
Chuck Leverbf269552010-12-14 14:59:29 +00007110static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
7111 struct xdr_stream *xdr,
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007112 struct nfs4_sequence_res *res)
7113{
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007114 struct compound_hdr hdr;
7115 int status;
7116
Chuck Leverbf269552010-12-14 14:59:29 +00007117 status = decode_compound_hdr(xdr, &hdr);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007118 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00007119 status = decode_sequence(xdr, res, rqstp);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007120 return status;
7121}
7122
7123/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05007124 * Decode GET_LEASE_TIME response
Andy Adamson2050f0c2009-04-01 09:22:30 -04007125 */
Chuck Leverbf269552010-12-14 14:59:29 +00007126static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
7127 struct xdr_stream *xdr,
Andy Adamson2050f0c2009-04-01 09:22:30 -04007128 struct nfs4_get_lease_time_res *res)
7129{
Andy Adamson2050f0c2009-04-01 09:22:30 -04007130 struct compound_hdr hdr;
7131 int status;
7132
Chuck Leverbf269552010-12-14 14:59:29 +00007133 status = decode_compound_hdr(xdr, &hdr);
Andy Adamson2050f0c2009-04-01 09:22:30 -04007134 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00007135 status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
Andy Adamson2050f0c2009-04-01 09:22:30 -04007136 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00007137 status = decode_putrootfh(xdr);
Andy Adamson2050f0c2009-04-01 09:22:30 -04007138 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00007139 status = decode_fsinfo(xdr, res->lr_fsinfo);
Andy Adamson2050f0c2009-04-01 09:22:30 -04007140 return status;
7141}
Ricardo Labiaga180197532009-12-05 16:08:40 -05007142
7143/*
7144 * Decode RECLAIM_COMPLETE response
7145 */
Chuck Leverbf269552010-12-14 14:59:29 +00007146static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
7147 struct xdr_stream *xdr,
Ricardo Labiaga180197532009-12-05 16:08:40 -05007148 struct nfs41_reclaim_complete_res *res)
7149{
Ricardo Labiaga180197532009-12-05 16:08:40 -05007150 struct compound_hdr hdr;
7151 int status;
7152
Chuck Leverbf269552010-12-14 14:59:29 +00007153 status = decode_compound_hdr(xdr, &hdr);
Ricardo Labiaga180197532009-12-05 16:08:40 -05007154 if (!status)
Chuck Leverbf269552010-12-14 14:59:29 +00007155 status = decode_sequence(xdr, &res->seq_res, rqstp);
Ricardo Labiaga180197532009-12-05 16:08:40 -05007156 if (!status)
Himangi Saraogi8ee2b782014-06-27 00:09:09 +05307157 status = decode_reclaim_complete(xdr, NULL);
Ricardo Labiaga180197532009-12-05 16:08:40 -05007158 return status;
7159}
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007160
7161/*
7162 * Decode GETDEVINFO response
7163 */
Chuck Leverbf269552010-12-14 14:59:29 +00007164static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
7165 struct xdr_stream *xdr,
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007166 struct nfs4_getdeviceinfo_res *res)
7167{
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007168 struct compound_hdr hdr;
7169 int status;
7170
Chuck Leverbf269552010-12-14 14:59:29 +00007171 status = decode_compound_hdr(xdr, &hdr);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007172 if (status != 0)
7173 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00007174 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007175 if (status != 0)
7176 goto out;
Trond Myklebust4e590802015-03-09 14:01:25 -04007177 status = decode_getdeviceinfo(xdr, res);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007178out:
7179 return status;
7180}
7181
7182/*
7183 * Decode LAYOUTGET response
7184 */
Chuck Leverbf269552010-12-14 14:59:29 +00007185static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
7186 struct xdr_stream *xdr,
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007187 struct nfs4_layoutget_res *res)
7188{
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007189 struct compound_hdr hdr;
7190 int status;
7191
Chuck Leverbf269552010-12-14 14:59:29 +00007192 status = decode_compound_hdr(xdr, &hdr);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007193 if (status)
7194 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00007195 status = decode_sequence(xdr, &res->seq_res, rqstp);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007196 if (status)
7197 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00007198 status = decode_putfh(xdr);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007199 if (status)
7200 goto out;
Chuck Leverbf269552010-12-14 14:59:29 +00007201 status = decode_layoutget(xdr, rqstp, res);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007202out:
7203 return status;
7204}
Andy Adamson863a3c62011-03-23 13:27:54 +00007205
7206/*
Benny Halevycbe82602011-05-22 19:52:37 +03007207 * Decode LAYOUTRETURN response
7208 */
7209static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
7210 struct xdr_stream *xdr,
7211 struct nfs4_layoutreturn_res *res)
7212{
7213 struct compound_hdr hdr;
7214 int status;
7215
7216 status = decode_compound_hdr(xdr, &hdr);
7217 if (status)
7218 goto out;
7219 status = decode_sequence(xdr, &res->seq_res, rqstp);
7220 if (status)
7221 goto out;
7222 status = decode_putfh(xdr);
7223 if (status)
7224 goto out;
7225 status = decode_layoutreturn(xdr, res);
7226out:
7227 return status;
7228}
7229
7230/*
Andy Adamson863a3c62011-03-23 13:27:54 +00007231 * Decode LAYOUTCOMMIT response
7232 */
7233static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
7234 struct xdr_stream *xdr,
7235 struct nfs4_layoutcommit_res *res)
7236{
7237 struct compound_hdr hdr;
7238 int status;
7239
7240 status = decode_compound_hdr(xdr, &hdr);
7241 if (status)
7242 goto out;
7243 status = decode_sequence(xdr, &res->seq_res, rqstp);
7244 if (status)
7245 goto out;
7246 status = decode_putfh(xdr);
7247 if (status)
7248 goto out;
7249 status = decode_layoutcommit(xdr, rqstp, res);
7250 if (status)
7251 goto out;
Trond Myklebust6926afd2012-01-07 13:22:46 -05007252 decode_getfattr(xdr, res->fattr, res->server);
Andy Adamson863a3c62011-03-23 13:27:54 +00007253out:
7254 return status;
7255}
Bryan Schumakerfca78d62011-06-02 14:59:07 -04007256
7257/*
7258 * Decode SECINFO_NO_NAME response
7259 */
7260static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
7261 struct xdr_stream *xdr,
7262 struct nfs4_secinfo_res *res)
7263{
7264 struct compound_hdr hdr;
7265 int status;
7266
7267 status = decode_compound_hdr(xdr, &hdr);
7268 if (status)
7269 goto out;
7270 status = decode_sequence(xdr, &res->seq_res, rqstp);
7271 if (status)
7272 goto out;
7273 status = decode_putrootfh(xdr);
7274 if (status)
7275 goto out;
Bryan Schumaker31e4dda2012-04-27 13:27:38 -04007276 status = decode_secinfo_no_name(xdr, res);
Bryan Schumakerfca78d62011-06-02 14:59:07 -04007277out:
7278 return status;
7279}
Bryan Schumaker7d974792011-06-02 14:59:08 -04007280
7281/*
7282 * Decode TEST_STATEID response
7283 */
7284static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
7285 struct xdr_stream *xdr,
7286 struct nfs41_test_stateid_res *res)
7287{
7288 struct compound_hdr hdr;
7289 int status;
7290
7291 status = decode_compound_hdr(xdr, &hdr);
7292 if (status)
7293 goto out;
7294 status = decode_sequence(xdr, &res->seq_res, rqstp);
7295 if (status)
7296 goto out;
7297 status = decode_test_stateid(xdr, res);
7298out:
7299 return status;
7300}
Bryan Schumaker9aeda352011-06-02 14:59:09 -04007301
7302/*
7303 * Decode FREE_STATEID response
7304 */
7305static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
7306 struct xdr_stream *xdr,
7307 struct nfs41_free_stateid_res *res)
7308{
7309 struct compound_hdr hdr;
7310 int status;
7311
7312 status = decode_compound_hdr(xdr, &hdr);
7313 if (status)
7314 goto out;
7315 status = decode_sequence(xdr, &res->seq_res, rqstp);
7316 if (status)
7317 goto out;
7318 status = decode_free_stateid(xdr, res);
7319out:
7320 return status;
7321}
Benny Halevy99fe60d2009-04-01 09:22:29 -04007322#endif /* CONFIG_NFS_V4_1 */
7323
Chuck Lever573c4e12010-12-14 14:58:11 +00007324/**
7325 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
7326 * the local page cache.
7327 * @xdr: XDR stream where entry resides
7328 * @entry: buffer to fill in with entry data
7329 * @plus: boolean indicating whether this should be a readdirplus entry
7330 *
7331 * Returns zero if successful, otherwise a negative errno value is
7332 * returned.
7333 *
7334 * This function is not invoked during READDIR reply decoding, but
7335 * rather whenever an application invokes the getdents(2) system call
7336 * on a directory already in our cache.
7337 */
7338int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
7339 int plus)
Linus Torvalds1da177e2005-04-16 15:20:36 -07007340{
Trond Myklebust256e48b2012-06-21 11:18:13 -04007341 unsigned int savep;
Fred Isamandae100c2011-07-30 20:52:37 -04007342 uint32_t bitmap[3] = {0};
Linus Torvalds1da177e2005-04-16 15:20:36 -07007343 uint32_t len;
Bryan Schumakerbabddc72010-10-20 15:44:29 -04007344 __be32 *p = xdr_inline_decode(xdr, 4);
7345 if (unlikely(!p))
7346 goto out_overflow;
Chuck Leverc08e76d2011-01-28 12:40:55 -05007347 if (*p == xdr_zero) {
Bryan Schumakerbabddc72010-10-20 15:44:29 -04007348 p = xdr_inline_decode(xdr, 4);
7349 if (unlikely(!p))
7350 goto out_overflow;
Chuck Leverc08e76d2011-01-28 12:40:55 -05007351 if (*p == xdr_zero)
Chuck Lever573c4e12010-12-14 14:58:11 +00007352 return -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007353 entry->eof = 1;
Chuck Lever573c4e12010-12-14 14:58:11 +00007354 return -EBADCOOKIE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007355 }
7356
Bryan Schumakerbabddc72010-10-20 15:44:29 -04007357 p = xdr_inline_decode(xdr, 12);
7358 if (unlikely(!p))
7359 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007360 entry->prev_cookie = entry->cookie;
7361 p = xdr_decode_hyper(p, &entry->cookie);
Chuck Leverc08e76d2011-01-28 12:40:55 -05007362 entry->len = be32_to_cpup(p);
Bryan Schumakerbabddc72010-10-20 15:44:29 -04007363
Trond Myklebust9af8c222010-10-24 11:52:55 -04007364 p = xdr_inline_decode(xdr, entry->len);
Bryan Schumakerbabddc72010-10-20 15:44:29 -04007365 if (unlikely(!p))
7366 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007367 entry->name = (const char *) p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007368
7369 /*
7370 * In case the server doesn't return an inode number,
7371 * we fake one here. (We don't use inode number 0,
7372 * since glibc seems to choke on it...)
7373 */
7374 entry->ino = 1;
Trond Myklebust4f082222010-10-24 13:14:02 -04007375 entry->fattr->valid = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007376
Trond Myklebust9af8c222010-10-24 11:52:55 -04007377 if (decode_attr_bitmap(xdr, bitmap) < 0)
Bryan Schumakerbabddc72010-10-20 15:44:29 -04007378 goto out_overflow;
Trond Myklebust9af8c222010-10-24 11:52:55 -04007379
Trond Myklebust256e48b2012-06-21 11:18:13 -04007380 if (decode_attr_length(xdr, &len, &savep) < 0)
Trond Myklebust9af8c222010-10-24 11:52:55 -04007381 goto out_overflow;
7382
Chuck Lever573c4e12010-12-14 14:58:11 +00007383 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
David Quigleyaa9c2662013-05-22 12:50:44 -04007384 NULL, entry->label, entry->server) < 0)
Trond Myklebust9af8c222010-10-24 11:52:55 -04007385 goto out_overflow;
Trond Myklebust28331a42011-04-27 13:47:52 -04007386 if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
7387 entry->ino = entry->fattr->mounted_on_fileid;
7388 else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
Trond Myklebust9af8c222010-10-24 11:52:55 -04007389 entry->ino = entry->fattr->fileid;
7390
Trond Myklebust0b26a0b2010-11-20 14:26:44 -05007391 entry->d_type = DT_UNKNOWN;
7392 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
7393 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
7394
Chuck Lever573c4e12010-12-14 14:58:11 +00007395 return 0;
Bryan Schumakerbabddc72010-10-20 15:44:29 -04007396
7397out_overflow:
7398 print_overflow_msg(__func__, xdr);
Chuck Lever573c4e12010-12-14 14:58:11 +00007399 return -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007400}
7401
7402/*
7403 * We need to translate between nfs status return values and
7404 * the local errno values which may not be the same.
7405 */
7406static struct {
7407 int stat;
7408 int errno;
7409} nfs_errtbl[] = {
7410 { NFS4_OK, 0 },
Benny Halevy856dff32008-03-31 17:39:06 +03007411 { NFS4ERR_PERM, -EPERM },
7412 { NFS4ERR_NOENT, -ENOENT },
7413 { NFS4ERR_IO, -errno_NFSERR_IO},
7414 { NFS4ERR_NXIO, -ENXIO },
7415 { NFS4ERR_ACCESS, -EACCES },
7416 { NFS4ERR_EXIST, -EEXIST },
7417 { NFS4ERR_XDEV, -EXDEV },
7418 { NFS4ERR_NOTDIR, -ENOTDIR },
7419 { NFS4ERR_ISDIR, -EISDIR },
7420 { NFS4ERR_INVAL, -EINVAL },
7421 { NFS4ERR_FBIG, -EFBIG },
7422 { NFS4ERR_NOSPC, -ENOSPC },
7423 { NFS4ERR_ROFS, -EROFS },
7424 { NFS4ERR_MLINK, -EMLINK },
7425 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
7426 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
7427 { NFS4ERR_DQUOT, -EDQUOT },
7428 { NFS4ERR_STALE, -ESTALE },
7429 { NFS4ERR_BADHANDLE, -EBADHANDLE },
Benny Halevy856dff32008-03-31 17:39:06 +03007430 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
7431 { NFS4ERR_NOTSUPP, -ENOTSUPP },
7432 { NFS4ERR_TOOSMALL, -ETOOSMALL },
Trond Myklebustfdcb4572010-02-08 09:32:40 -05007433 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
Benny Halevy856dff32008-03-31 17:39:06 +03007434 { NFS4ERR_BADTYPE, -EBADTYPE },
7435 { NFS4ERR_LOCKED, -EAGAIN },
Benny Halevy856dff32008-03-31 17:39:06 +03007436 { NFS4ERR_SYMLINK, -ELOOP },
7437 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
7438 { NFS4ERR_DEADLOCK, -EDEADLK },
Benny Halevy856dff32008-03-31 17:39:06 +03007439 { -1, -EIO }
Linus Torvalds1da177e2005-04-16 15:20:36 -07007440};
7441
7442/*
7443 * Convert an NFS error code to a local one.
7444 * This one is used jointly by NFSv2 and NFSv3.
7445 */
7446static int
David Howells0a8ea432006-08-22 20:06:08 -04007447nfs4_stat_to_errno(int stat)
Linus Torvalds1da177e2005-04-16 15:20:36 -07007448{
7449 int i;
7450 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
7451 if (nfs_errtbl[i].stat == stat)
7452 return nfs_errtbl[i].errno;
7453 }
7454 if (stat <= 10000 || stat > 10100) {
7455 /* The server is looney tunes. */
Trond Myklebustfdcb4572010-02-08 09:32:40 -05007456 return -EREMOTEIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007457 }
7458 /* If we cannot translate the error, the recovery routines should
7459 * handle it.
7460 * Note: remaining NFSv4 error codes have values > 10000, so should
7461 * not conflict with native Linux error codes.
7462 */
Benny Halevy856dff32008-03-31 17:39:06 +03007463 return -stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007464}
7465
Anna Schumaker1c6dcbe2014-09-26 13:58:48 -04007466#ifdef CONFIG_NFS_V4_2
7467#include "nfs42xdr.c"
7468#endif /* CONFIG_NFS_V4_2 */
7469
Linus Torvalds1da177e2005-04-16 15:20:36 -07007470#define PROC(proc, argtype, restype) \
7471[NFSPROC4_CLNT_##proc] = { \
7472 .p_proc = NFSPROC4_COMPOUND, \
Chuck Lever9f06c712010-12-14 14:59:18 +00007473 .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
Chuck Leverbf269552010-12-14 14:59:29 +00007474 .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
Chuck Lever2bea90d2007-03-29 16:47:53 -04007475 .p_arglen = NFS4_##argtype##_sz, \
7476 .p_replen = NFS4_##restype##_sz, \
Chuck Levercc0175c2006-03-20 13:44:22 -05007477 .p_statidx = NFSPROC4_CLNT_##proc, \
7478 .p_name = #proc, \
Andy Adamson05d564f2008-12-23 16:06:15 -05007479}
Linus Torvalds1da177e2005-04-16 15:20:36 -07007480
Anna Schumaker7c61f0d2015-04-14 10:34:20 -04007481#define STUB(proc) \
7482[NFSPROC4_CLNT_##proc] = { \
7483 .p_name = #proc, \
7484}
7485
Linus Torvalds1da177e2005-04-16 15:20:36 -07007486struct rpc_procinfo nfs4_procedures[] = {
Chuck Lever7d93bd712010-12-14 14:57:42 +00007487 PROC(READ, enc_read, dec_read),
7488 PROC(WRITE, enc_write, dec_write),
7489 PROC(COMMIT, enc_commit, dec_commit),
7490 PROC(OPEN, enc_open, dec_open),
7491 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
7492 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
7493 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
7494 PROC(CLOSE, enc_close, dec_close),
7495 PROC(SETATTR, enc_setattr, dec_setattr),
7496 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
7497 PROC(RENEW, enc_renew, dec_renew),
7498 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
7499 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
7500 PROC(LOCK, enc_lock, dec_lock),
7501 PROC(LOCKT, enc_lockt, dec_lockt),
7502 PROC(LOCKU, enc_locku, dec_locku),
7503 PROC(ACCESS, enc_access, dec_access),
7504 PROC(GETATTR, enc_getattr, dec_getattr),
7505 PROC(LOOKUP, enc_lookup, dec_lookup),
7506 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
7507 PROC(REMOVE, enc_remove, dec_remove),
7508 PROC(RENAME, enc_rename, dec_rename),
7509 PROC(LINK, enc_link, dec_link),
7510 PROC(SYMLINK, enc_symlink, dec_symlink),
7511 PROC(CREATE, enc_create, dec_create),
7512 PROC(PATHCONF, enc_pathconf, dec_pathconf),
7513 PROC(STATFS, enc_statfs, dec_statfs),
7514 PROC(READLINK, enc_readlink, dec_readlink),
7515 PROC(READDIR, enc_readdir, dec_readdir),
7516 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
7517 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
7518 PROC(GETACL, enc_getacl, dec_getacl),
7519 PROC(SETACL, enc_setacl, dec_setacl),
7520 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
7521 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00007522 PROC(SECINFO, enc_secinfo, dec_secinfo),
Chuck Lever44c99932013-10-17 14:13:30 -04007523 PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present),
Benny Halevy99fe60d2009-04-01 09:22:29 -04007524#if defined(CONFIG_NFS_V4_1)
Chuck Lever7d93bd712010-12-14 14:57:42 +00007525 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
7526 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
7527 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
7528 PROC(SEQUENCE, enc_sequence, dec_sequence),
7529 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
7530 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
7531 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
7532 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
Andy Adamson863a3c62011-03-23 13:27:54 +00007533 PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
Benny Halevycbe82602011-05-22 19:52:37 +03007534 PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
Bryan Schumakerfca78d62011-06-02 14:59:07 -04007535 PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
Bryan Schumaker7d974792011-06-02 14:59:08 -04007536 PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
Bryan Schumaker9aeda352011-06-02 14:59:09 -04007537 PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
Anna Schumaker7c61f0d2015-04-14 10:34:20 -04007538 STUB(GETDEVICELIST),
Trond Myklebustad24ecf2012-05-25 17:11:42 -04007539 PROC(BIND_CONN_TO_SESSION,
7540 enc_bind_conn_to_session, dec_bind_conn_to_session),
Trond Myklebust66245532012-05-25 17:18:09 -04007541 PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
Benny Halevy99fe60d2009-04-01 09:22:29 -04007542#endif /* CONFIG_NFS_V4_1 */
Anna Schumaker1c6dcbe2014-09-26 13:58:48 -04007543#ifdef CONFIG_NFS_V4_2
7544 PROC(SEEK, enc_seek, dec_seek),
Anna Schumakerf4ac1672014-11-25 13:18:15 -05007545 PROC(ALLOCATE, enc_allocate, dec_allocate),
Anna Schumaker624bd5b2014-11-25 13:18:16 -05007546 PROC(DEALLOCATE, enc_deallocate, dec_deallocate),
Trond Myklebustbe3a5d22015-06-23 19:51:55 +08007547 PROC(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
Peng Tao36022772015-09-26 02:24:34 +08007548 PROC(CLONE, enc_clone, dec_clone),
Anna Schumaker2e724482013-05-21 16:53:03 -04007549 PROC(COPY, enc_copy, dec_copy),
Anna Schumaker1c6dcbe2014-09-26 13:58:48 -04007550#endif /* CONFIG_NFS_V4_2 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07007551};
7552
Trond Myklebusta613fa12012-01-20 13:53:56 -05007553const struct rpc_version nfs_version4 = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07007554 .number = 4,
Tobias Klausere8c96f82006-03-24 03:15:34 -08007555 .nrprocs = ARRAY_SIZE(nfs4_procedures),
Linus Torvalds1da177e2005-04-16 15:20:36 -07007556 .procs = nfs4_procedures
7557};
7558
7559/*
7560 * Local variables:
7561 * c-basic-offset: 8
7562 * End:
7563 */