Newer
Older
/*
* fs/nfs/nfs4xdr.c
*
* Client-side XDR for NFSv4.
*
* Copyright (c) 2002 The Regents of the University of Michigan.
* All rights reserved.
*
* Kendrick Smith <kmsmith@umich.edu>
* Andy Adamson <andros@umich.edu>
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/param.h>
#include <linux/time.h>
#include <linux/mm.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/in.h>
#include <linux/pagemap.h>
#include <linux/proc_fs.h>
#include <linux/kdev_t.h>
#include <linux/module.h>
#include <linux/utsname.h>
#include <linux/sunrpc/msg_prot.h>
#include <linux/nfs.h>
#include <linux/nfs4.h>
#include <linux/nfs_fs.h>
#include <linux/nfs_idmap.h>
#include "internal.h"
#include "nfs4session.h"
#include "pnfs.h"
#define NFSDBG_FACILITY NFSDBG_XDR
/* Mapping from NFS error code to "errno" error code. */
#define errno_NFSERR_IO EIO
static int nfs4_stat_to_errno(int);
/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
#ifdef DEBUG
#define NFS4_MAXTAGLEN 20
#else
#define NFS4_MAXTAGLEN 0
#endif
* we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
#define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
#define lock_owner_id_maxsz (1 + 1 + 4)
#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
#define op_encode_hdr_maxsz (1)
#define op_decode_hdr_maxsz (2)
#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
(NFS4_FHSIZE >> 2))
#define decode_putfh_maxsz (op_decode_hdr_maxsz)
#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
#define encode_getfh_maxsz (op_encode_hdr_maxsz)
#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
((3+NFS4_FHSIZE) >> 2))
#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
/* We support only one layout type per file system */
#define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
/* This is based on getfattr, which uses the most attributes: */
#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
3 + 3 + 3 + nfs4_owner_maxsz + \
nfs4_group_maxsz + decode_mdsthreshold_maxsz))
#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
nfs4_fattr_value_maxsz)
#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
1 + 2 + 1 + \
nfs4_owner_maxsz + \
nfs4_group_maxsz + \
4 + 4)
#define encode_savefh_maxsz (op_encode_hdr_maxsz)
#define decode_savefh_maxsz (op_decode_hdr_maxsz)
#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
#define encode_fsinfo_maxsz (encode_getattr_maxsz)
/* The 5 accounts for the PNFS attributes, and assumes that at most three
* layout types will be returned.
*/
#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
#define decode_renew_maxsz (op_decode_hdr_maxsz)
#define encode_setclientid_maxsz \
(op_encode_hdr_maxsz + \
XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
1 /* sc_prog */ + \
XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
1) /* sc_cb_ident */
#define decode_setclientid_maxsz \
(op_decode_hdr_maxsz + \
2 + \
1024) /* large value for CLID_INUSE */
#define encode_setclientid_confirm_maxsz \
(op_encode_hdr_maxsz + \
3 + (NFS4_VERIFIER_SIZE >> 2))
#define decode_setclientid_confirm_maxsz \
(op_decode_hdr_maxsz)
#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
#define decode_lookup_maxsz (op_decode_hdr_maxsz)
#define encode_share_access_maxsz \
(2)
#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
#define encode_open_maxsz (op_encode_hdr_maxsz + \
2 + encode_share_access_maxsz + 2 + \
open_owner_id_maxsz + \
encode_opentype_maxsz + \
encode_claim_null_maxsz)
#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
decode_ace_maxsz)
#define decode_change_info_maxsz (5)
#define decode_open_maxsz (op_decode_hdr_maxsz + \
decode_change_info_maxsz + 1 + \
nfs4_fattr_bitmap_maxsz + \
decode_delegation_maxsz)
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
#define encode_open_confirm_maxsz \
(op_encode_hdr_maxsz + \
encode_stateid_maxsz + 1)
#define decode_open_confirm_maxsz \
(op_decode_hdr_maxsz + \
decode_stateid_maxsz)
#define encode_open_downgrade_maxsz \
(op_encode_hdr_maxsz + \
encode_stateid_maxsz + 1 + \
encode_share_access_maxsz)
#define decode_open_downgrade_maxsz \
(op_decode_hdr_maxsz + \
decode_stateid_maxsz)
#define encode_close_maxsz (op_encode_hdr_maxsz + \
1 + encode_stateid_maxsz)
#define decode_close_maxsz (op_decode_hdr_maxsz + \
decode_stateid_maxsz)
#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
encode_stateid_maxsz + \
encode_attrs_maxsz)
#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
nfs4_fattr_bitmap_maxsz)
#define encode_read_maxsz (op_encode_hdr_maxsz + \
encode_stateid_maxsz + 3)
#define decode_read_maxsz (op_decode_hdr_maxsz + 2)
#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
2 + encode_verifier_maxsz + 5)
#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
decode_verifier_maxsz)
#define encode_readlink_maxsz (op_encode_hdr_maxsz)
#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
#define encode_write_maxsz (op_encode_hdr_maxsz + \
encode_stateid_maxsz + 4)
#define decode_write_maxsz (op_decode_hdr_maxsz + \
2 + decode_verifier_maxsz)
#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
#define decode_commit_maxsz (op_decode_hdr_maxsz + \
decode_verifier_maxsz)
#define encode_remove_maxsz (op_encode_hdr_maxsz + \
nfs4_name_maxsz)
#define decode_remove_maxsz (op_decode_hdr_maxsz + \
decode_change_info_maxsz)
#define encode_rename_maxsz (op_encode_hdr_maxsz + \
2 * nfs4_name_maxsz)
#define decode_rename_maxsz (op_decode_hdr_maxsz + \
decode_change_info_maxsz + \
decode_change_info_maxsz)
#define encode_link_maxsz (op_encode_hdr_maxsz + \
nfs4_name_maxsz)
#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
#define encode_lockowner_maxsz (7)
#define encode_lock_maxsz (op_encode_hdr_maxsz + \
7 + \
1 + encode_stateid_maxsz + 1 + \
encode_lockowner_maxsz)
#define decode_lock_denied_maxsz \
(8 + decode_lockowner_maxsz)
#define decode_lock_maxsz (op_decode_hdr_maxsz + \
decode_lock_denied_maxsz)
#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
encode_lockowner_maxsz)
#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
decode_lock_denied_maxsz)
#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
encode_stateid_maxsz + \
4)
#define decode_locku_maxsz (op_decode_hdr_maxsz + \
decode_stateid_maxsz)
#define encode_release_lockowner_maxsz \
(op_encode_hdr_maxsz + \
encode_lockowner_maxsz)
#define decode_release_lockowner_maxsz \
(op_decode_hdr_maxsz)
#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
1 + nfs4_name_maxsz + \
#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
#define encode_create_maxsz (op_encode_hdr_maxsz + \
1 + 2 + nfs4_name_maxsz + \
encode_attrs_maxsz)
#define decode_create_maxsz (op_decode_hdr_maxsz + \
decode_change_info_maxsz + \
nfs4_fattr_bitmap_maxsz)
#define encode_statfs_maxsz (encode_getattr_maxsz)
#define decode_statfs_maxsz (decode_getattr_maxsz)
#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
#define encode_getacl_maxsz (encode_getattr_maxsz)
#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
nfs4_fattr_bitmap_maxsz + 1)
#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
encode_stateid_maxsz + 3)
#define decode_setacl_maxsz (decode_setattr_maxsz)
#define encode_fs_locations_maxsz \
(encode_getattr_maxsz)
#define decode_fs_locations_maxsz \
(0)
#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
#define NFS4_MAX_MACHINE_NAME_LEN (64)
#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
encode_verifier_maxsz + \
1 /* co_ownerid.len */ + \
XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
1 /* flags */ + \
1 /* spa_how */ + \
0 /* SP4_NONE (for now) */ + \
1 /* implementation id array of size 1 */ + \
1 /* nii_domain */ + \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
1 /* nii_name */ + \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
3 /* nii_date */)
#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
2 /* eir_clientid */ + \
1 /* eir_sequenceid */ + \
1 /* eir_flags */ + \
1 /* spr_how */ + \
0 /* SP4_NONE (for now) */ + \
2 /* eir_server_owner.so_minor_id */ + \
/* eir_server_owner.so_major_id<> */ \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
/* eir_server_scope<> */ \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
1 /* eir_server_impl_id array length */ + \
1 /* nii_domain */ + \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
1 /* nii_name */ + \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
3 /* nii_date */)
#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
#define decode_channel_attrs_maxsz (6 + \
1 /* ca_rdma_ird.len */ + \
1 /* ca_rdma_ird */)
#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
2 /* csa_clientid */ + \
1 /* csa_sequence */ + \
1 /* csa_flags */ + \
encode_channel_attrs_maxsz + \
encode_channel_attrs_maxsz + \
1 /* csa_cb_program */ + \
1 /* csa_sec_parms.len (1) */ + \
1 /* cb_secflavor (AUTH_SYS) */ + \
1 /* stamp */ + \
1 /* machinename.len */ + \
XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
1 /* uid */ + \
1 /* gid */ + \
1 /* gids.len (0) */)
#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
1 /* csr_sequence */ + \
1 /* csr_flags */ + \
decode_channel_attrs_maxsz + \
decode_channel_attrs_maxsz)
#define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
/* bctsa_sessid */ \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
1 /* bctsa_dir */ + \
1 /* bctsa_use_conn_in_rdma_mode */)
#define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
/* bctsr_sessid */ \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
1 /* bctsr_dir */ + \
1 /* bctsr_use_conn_in_rdma_mode */)
#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
#define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
#define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
#define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \
encode_verifier_maxsz)
#define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \
2 /* nfs_cookie4 gdlr_cookie */ + \
decode_verifier_maxsz \
/* verifier4 gdlr_verifier */ + \
1 /* gdlr_deviceid_list count */ + \
XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \
NFS4_DEVICEID4_SIZE) \
/* gdlr_deviceid_list */ + \
1 /* bool gdlr_eof */)
#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
1 /* layout type */ + \
1 /* opaque devaddr4 length */ + \
/* devaddr4 payload is read into page */ \
1 /* notification bitmap length */ + \
1 /* notification bitmap */)
#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
encode_stateid_maxsz)
#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
decode_stateid_maxsz + \
XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
2 /* offset */ + \
2 /* length */ + \
1 /* reclaim */ + \
encode_stateid_maxsz + \
1 /* new offset (true) */ + \
2 /* last byte written */ + \
1 /* nt_timechanged (false) */ + \
1 /* layoutupdate4 layout type */ + \
1 /* NULL filelayout layoutupdate4 payload */)
#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
encode_stateid_maxsz + \
1 /* FIXME: opaque lrf_body always empty at the moment */)
#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
1 + decode_stateid_maxsz)
#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
XDR_QUADLEN(NFS4_STATEID_SIZE))
#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
XDR_QUADLEN(NFS4_STATEID_SIZE))
#define decode_free_stateid_maxsz (op_decode_hdr_maxsz + 1)
#else /* CONFIG_NFS_V4_1 */
#define encode_sequence_maxsz 0
#define decode_sequence_maxsz 0
#endif /* CONFIG_NFS_V4_1 */
#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_open_maxsz + \
encode_access_maxsz + \
encode_getfh_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_open_maxsz + \
decode_access_maxsz + \
decode_getfh_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_open_confirm_sz \
(compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_open_confirm_maxsz)
#define NFS4_dec_open_confirm_sz \
(compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_open_confirm_maxsz)
#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
encode_open_maxsz + \
encode_access_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
decode_open_maxsz + \
decode_access_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_open_downgrade_sz \
(compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_open_downgrade_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_open_downgrade_sz \
(compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_open_downgrade_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_close_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_close_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_setattr_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_setattr_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_fsinfo_maxsz)
#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_fsinfo_maxsz)
#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
encode_renew_maxsz)
#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
decode_renew_maxsz)
#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
encode_setclientid_maxsz)
#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
decode_setclientid_maxsz)
#define NFS4_enc_setclientid_confirm_sz \
(compound_encode_hdr_maxsz + \
encode_setclientid_confirm_maxsz + \
encode_putrootfh_maxsz + \
encode_fsinfo_maxsz)
#define NFS4_dec_setclientid_confirm_sz \
(compound_decode_hdr_maxsz + \
decode_setclientid_confirm_maxsz + \
decode_putrootfh_maxsz + \
decode_fsinfo_maxsz)
#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
encode_lockt_maxsz)
#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_lockt_maxsz)
#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
#define NFS4_enc_release_lockowner_sz \
(compound_encode_hdr_maxsz + \
encode_lockowner_maxsz)
#define NFS4_dec_release_lockowner_sz \
(compound_decode_hdr_maxsz + \
decode_lockowner_maxsz)
#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
encode_access_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
decode_access_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_lookup_maxsz + \
encode_getattr_maxsz + \
encode_getfh_maxsz)
#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
decode_lookup_maxsz + \
decode_getattr_maxsz + \
decode_getfh_maxsz)
#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
encode_putrootfh_maxsz + \
encode_getattr_maxsz + \
encode_getfh_maxsz)
#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
decode_putrootfh_maxsz + \
decode_getattr_maxsz + \
decode_getfh_maxsz)
#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
encode_remove_maxsz)
#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
decode_remove_maxsz)
#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_savefh_maxsz + \
encode_putfh_maxsz + \
encode_rename_maxsz)
#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_savefh_maxsz + \
decode_putfh_maxsz + \
decode_rename_maxsz)
#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_savefh_maxsz + \
encode_putfh_maxsz + \
encode_link_maxsz + \
encode_restorefh_maxsz + \
#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_savefh_maxsz + \
decode_putfh_maxsz + \
decode_link_maxsz + \
decode_restorefh_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_symlink_maxsz + \
encode_getattr_maxsz + \
encode_getfh_maxsz)
#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_symlink_maxsz + \
decode_getattr_maxsz + \
decode_getfh_maxsz)
#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
encode_getfh_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
decode_getfh_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
encode_delegreturn_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
decode_delegreturn_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
#define NFS4_enc_fs_locations_sz \
(compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_lookup_maxsz + \
encode_fs_locations_maxsz)
#define NFS4_dec_fs_locations_sz \
(compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_lookup_maxsz + \
decode_fs_locations_maxsz)
#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_secinfo_maxsz)
#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_secinfo_maxsz)
#define NFS4_enc_bind_conn_to_session_sz \
(compound_encode_hdr_maxsz + \
encode_bind_conn_to_session_maxsz)
#define NFS4_dec_bind_conn_to_session_sz \
(compound_decode_hdr_maxsz + \
decode_bind_conn_to_session_maxsz)
#define NFS4_enc_exchange_id_sz \
(compound_encode_hdr_maxsz + \
encode_exchange_id_maxsz)
#define NFS4_dec_exchange_id_sz \
(compound_decode_hdr_maxsz + \
decode_exchange_id_maxsz)
#define NFS4_enc_create_session_sz \
(compound_encode_hdr_maxsz + \
encode_create_session_maxsz)
#define NFS4_dec_create_session_sz \
(compound_decode_hdr_maxsz + \
decode_create_session_maxsz)
#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
encode_destroy_session_maxsz)
#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
decode_destroy_session_maxsz)
#define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
encode_destroy_clientid_maxsz)
#define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
decode_destroy_clientid_maxsz)
#define NFS4_enc_sequence_sz \
(compound_decode_hdr_maxsz + \
encode_sequence_maxsz)
#define NFS4_dec_sequence_sz \
(compound_decode_hdr_maxsz + \
decode_sequence_maxsz)
#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putrootfh_maxsz + \
encode_fsinfo_maxsz)
#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putrootfh_maxsz + \
decode_fsinfo_maxsz)
#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_reclaim_complete_maxsz)
#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_reclaim_complete_maxsz)
#define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_getdevicelist_maxsz)
#define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_getdevicelist_maxsz)
#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz +\
encode_getdeviceinfo_maxsz)
#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_getdeviceinfo_maxsz)
#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_layoutget_maxsz)
#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_layoutget_maxsz)
#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz +\
encode_putfh_maxsz + \
encode_layoutcommit_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_layoutcommit_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_layoutreturn_maxsz)
#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_layoutreturn_maxsz)
#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putrootfh_maxsz +\
encode_secinfo_no_name_maxsz)
#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putrootfh_maxsz + \
decode_secinfo_no_name_maxsz)
#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_test_stateid_maxsz)
#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_test_stateid_maxsz)
#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_free_stateid_maxsz)
#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_free_stateid_maxsz)
const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
compound_encode_hdr_maxsz +
encode_sequence_maxsz +
encode_putfh_maxsz +
encode_getattr_maxsz) *
XDR_UNIT);
const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
compound_decode_hdr_maxsz +
decode_sequence_maxsz +
decode_putfh_maxsz) *
XDR_UNIT);
static const umode_t nfs_type2fmt[] = {
[NF4BAD] = 0,
[NF4REG] = S_IFREG,
[NF4DIR] = S_IFDIR,
[NF4BLK] = S_IFBLK,
[NF4CHR] = S_IFCHR,
[NF4LNK] = S_IFLNK,
[NF4SOCK] = S_IFSOCK,
[NF4FIFO] = S_IFIFO,
[NF4ATTRDIR] = 0,
[NF4NAMEDATTR] = 0,
};
struct compound_hdr {
int32_t status;
uint32_t nops;
__be32 * nops_p;
uint32_t replen; /* expected reply words */
static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
{
__be32 *p = xdr_reserve_space(xdr, nbytes);
BUG_ON(!p);
return p;
}
static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
{
__be32 *p;
p = xdr_reserve_space(xdr, len);
xdr_encode_opaque_fixed(p, buf, len);
}
static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
{
p = reserve_space(xdr, 4 + len);
static void encode_uint32(struct xdr_stream *xdr, u32 n)
{
__be32 *p;
p = reserve_space(xdr, 4);
*p = cpu_to_be32(n);
}
static void encode_uint64(struct xdr_stream *xdr, u64 n)
{
__be32 *p;
p = reserve_space(xdr, 8);
xdr_encode_hyper(p, n);
}
static void encode_nfs4_seqid(struct xdr_stream *xdr,
const struct nfs_seqid *seqid)
{
encode_uint32(xdr, seqid->sequence->counter);
}
static void encode_compound_hdr(struct xdr_stream *xdr,
struct rpc_rqst *req,
struct compound_hdr *hdr)
struct rpc_auth *auth = req->rq_cred->cr_auth;
/* initialize running count of expected bytes in reply.
* NOTE: the replied tag SHOULD be the same is the one sent,
* but this is not required as a MUST for the server to do so. */
hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
encode_string(xdr, hdr->taglen, hdr->tag);
p = reserve_space(xdr, 8);
hdr->nops_p = p;
static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
uint32_t replen,
struct compound_hdr *hdr)
{
encode_uint32(xdr, op);
hdr->nops++;
hdr->replen += replen;
}
static void encode_nops(struct compound_hdr *hdr)
{
WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
*hdr->nops_p = htonl(hdr->nops);
static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
{
encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
{
encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
{
char owner_name[IDMAP_NAMESZ];
char owner_group[IDMAP_NAMESZ];
int owner_namelen = 0;
int owner_grouplen = 0;
int len;
uint32_t bmval0 = 0;
uint32_t bmval1 = 0;
/*
* We reserve enough space to write the entire attribute buffer at once.
* In the worst-case, this would be
* 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
* = 36 bytes, plus any contribution from variable-length fields
* such as owner/group.
*/
len = 16;
/* Sigh */
if (iap->ia_valid & ATTR_SIZE)
len += 8;
if (iap->ia_valid & ATTR_MODE)
len += 4;
if (iap->ia_valid & ATTR_UID) {
owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);