blob: db1ed9c46ede9f4d9c899e45c63289ccb5296546 [file] [log] [blame]
/*
* 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>
*
* 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/slab.h>
#include <linux/utsname.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/sunrpc/clnt.h>
#include <linux/nfs.h>
#include <linux/nfs4.h>
#include <linux/nfs_fs.h>
#include <linux/nfs_idmap.h>
#include "nfs4_fs.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
/* lock,open owner id:
* we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
*/
#define open_owner_id_maxsz (1 + 4)
#define lock_owner_id_maxsz (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 nfs4_fattr_bitmap_maxsz 3
#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))
/* 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))
#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 (op_encode_hdr_maxsz + 2)
#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
#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)
#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_stateid_maxsz + \
decode_change_info_maxsz + 1 + \
nfs4_fattr_bitmap_maxsz + \
decode_delegation_maxsz)
#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 encode_rename_maxsz (op_encode_hdr_maxsz + \
2 * nfs4_name_maxsz)
#define decode_rename_maxsz (op_decode_hdr_maxsz + 5 + 5)
#define encode_link_maxsz (op_encode_hdr_maxsz + \
nfs4_name_maxsz)
#define decode_link_maxsz (op_decode_hdr_maxsz + 5)
#define encode_lock_maxsz (op_encode_hdr_maxsz + \
7 + \
1 + encode_stateid_maxsz + 8)
#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 + 12)
#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_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 + \
1 + \
nfs4_fattr_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 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 + \
encode_putfh_maxsz + \
encode_read_maxsz)
#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_read_maxsz)
#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_readlink_maxsz)
#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_readlink_maxsz)
#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_readdir_maxsz)
#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_readdir_maxsz)
#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_write_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_write_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_commit_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_commit_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_savefh_maxsz + \
encode_open_maxsz + \
encode_getfh_maxsz + \
encode_getattr_maxsz + \
encode_restorefh_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_savefh_maxsz + \
decode_open_maxsz + \
decode_getfh_maxsz + \
decode_getattr_maxsz + \
decode_restorefh_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_putfh_maxsz + \
encode_open_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_open_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 + \
encode_putfh_maxsz + \
encode_lock_maxsz)
#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_lock_maxsz)
#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
encode_putfh_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 + \
encode_putfh_maxsz + \
encode_locku_maxsz)
#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_locku_maxsz)
#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_access_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
decode_putfh_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_putfh_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_putfh_maxsz + \
encode_remove_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
op_decode_hdr_maxsz + 5 + \
decode_getattr_maxsz)
#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_savefh_maxsz + \
encode_putfh_maxsz + \
encode_rename_maxsz + \
encode_getattr_maxsz + \
encode_restorefh_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_savefh_maxsz + \
decode_putfh_maxsz + \
decode_rename_maxsz + \
decode_getattr_maxsz + \
decode_restorefh_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_savefh_maxsz + \
encode_putfh_maxsz + \
encode_link_maxsz + \
decode_getattr_maxsz + \
encode_restorefh_maxsz + \
decode_getattr_maxsz)
#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_savefh_maxsz + \
decode_putfh_maxsz + \
decode_link_maxsz + \
decode_getattr_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_putfh_maxsz + \
encode_savefh_maxsz + \
encode_create_maxsz + \
encode_getfh_maxsz + \
encode_getattr_maxsz + \
encode_restorefh_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_savefh_maxsz + \
decode_create_maxsz + \
decode_getfh_maxsz + \
decode_getattr_maxsz + \
decode_restorefh_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 + \
encode_putfh_maxsz + \
encode_statfs_maxsz)
#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_statfs_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_putfh_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 + \
encode_getacl_maxsz)
#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_getacl_maxsz)
#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_setacl_maxsz)
#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_setacl_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)
static struct {
unsigned int mode;
unsigned int nfs2type;
} nfs_type2fmt[] = {
{ 0, NFNON },
{ S_IFREG, NFREG },
{ S_IFDIR, NFDIR },
{ S_IFBLK, NFBLK },
{ S_IFCHR, NFCHR },
{ S_IFLNK, NFLNK },
{ S_IFSOCK, NFSOCK },
{ S_IFIFO, NFFIFO },
{ 0, NFNON },
{ 0, NFNON },
};
struct compound_hdr {
int32_t status;
uint32_t nops;
uint32_t taglen;
char * tag;
};
/*
* START OF "GENERIC" ENCODE ROUTINES.
* These may look a little ugly since they are imported from a "generic"
* set of XDR encode/decode routines which are intended to be shared by
* all of our NFSv4 implementations (OpenBSD, MacOS X...).
*
* If the pain of reading these is too great, it should be a straightforward
* task to translate them into Linux-specific versions which are more
* consistent with the style used in NFSv2/v3...
*/
#define WRITE32(n) *p++ = htonl(n)
#define WRITE64(n) do { \
*p++ = htonl((uint32_t)((n) >> 32)); \
*p++ = htonl((uint32_t)(n)); \
} while (0)
#define WRITEMEM(ptr,nbytes) do { \
p = xdr_encode_opaque_fixed(p, ptr, nbytes); \
} while (0)
#define RESERVE_SPACE(nbytes) do { \
p = xdr_reserve_space(xdr, nbytes); \
BUG_ON(!p); \
} while (0)
static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
{
__be32 *p;
p = xdr_reserve_space(xdr, 4 + len);
BUG_ON(p == NULL);
xdr_encode_opaque(p, str, len);
}
static int encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
{
__be32 *p;
dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
WRITE32(hdr->taglen);
WRITEMEM(hdr->tag, hdr->taglen);
WRITE32(NFS4_MINOR_VERSION);
WRITE32(hdr->nops);
return 0;
}
static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
{
__be32 *p;
p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
BUG_ON(p == NULL);
xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
}
static int 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;
__be32 *p;
__be32 *q;
int len;
uint32_t bmval0 = 0;
uint32_t bmval1 = 0;
int status;
/*
* 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->nfs_client, iap->ia_uid, owner_name);
if (owner_namelen < 0) {
dprintk("nfs: couldn't resolve uid %d to string\n",
iap->ia_uid);
/* XXX */
strcpy(owner_name, "nobody");
owner_namelen = sizeof("nobody") - 1;
/* goto out; */
}
len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
}
if (iap->ia_valid & ATTR_GID) {
owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group);
if (owner_grouplen < 0) {
dprintk("nfs: couldn't resolve gid %d to string\n",
iap->ia_gid);
strcpy(owner_group, "nobody");
owner_grouplen = sizeof("nobody") - 1;
/* goto out; */
}
len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
}
if (iap->ia_valid & ATTR_ATIME_SET)
len += 16;
else if (iap->ia_valid & ATTR_ATIME)
len += 4;
if (iap->ia_valid & ATTR_MTIME_SET)
len += 16;
else if (iap->ia_valid & ATTR_MTIME)
len += 4;
RESERVE_SPACE(len);
/*
* We write the bitmap length now, but leave the bitmap and the attribute
* buffer length to be backfilled at the end of this routine.
*/
WRITE32(2);
q = p;
p += 3;
if (iap->ia_valid & ATTR_SIZE) {
bmval0 |= FATTR4_WORD0_SIZE;
WRITE64(iap->ia_size);
}
if (iap->ia_valid & ATTR_MODE) {
bmval1 |= FATTR4_WORD1_MODE;
WRITE32(iap->ia_mode & S_IALLUGO);
}
if (iap->ia_valid & ATTR_UID) {
bmval1 |= FATTR4_WORD1_OWNER;
WRITE32(owner_namelen);
WRITEMEM(owner_name, owner_namelen);
}
if (iap->ia_valid & ATTR_GID) {
bmval1 |= FATTR4_WORD1_OWNER_GROUP;
WRITE32(owner_grouplen);
WRITEMEM(owner_group, owner_grouplen);
}
if (iap->ia_valid & ATTR_ATIME_SET) {
bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
WRITE32(NFS4_SET_TO_CLIENT_TIME);
WRITE32(0);
WRITE32(iap->ia_mtime.tv_sec);
WRITE32(iap->ia_mtime.tv_nsec);
}
else if (iap->ia_valid & ATTR_ATIME) {
bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
WRITE32(NFS4_SET_TO_SERVER_TIME);
}
if (iap->ia_valid & ATTR_MTIME_SET) {
bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
WRITE32(NFS4_SET_TO_CLIENT_TIME);
WRITE32(0);
WRITE32(iap->ia_mtime.tv_sec);
WRITE32(iap->ia_mtime.tv_nsec);
}
else if (iap->ia_valid & ATTR_MTIME) {
bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
WRITE32(NFS4_SET_TO_SERVER_TIME);
}
/*
* Now we backfill the bitmap and the attribute buffer length.
*/
if (len != ((char *)p - (char *)q) + 4) {
printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
len, ((char *)p - (char *)q) + 4);
BUG();
}
len = (char *)p - (char *)q - 12;
*q++ = htonl(bmval0);
*q++ = htonl(bmval1);
*q++ = htonl(len);
status = 0;
/* out: */
return status;
}
static int encode_access(struct xdr_stream *xdr, u32 access)
{
__be32 *p;
RESERVE_SPACE(8);
WRITE32(OP_ACCESS);
WRITE32(access);
return 0;
}
static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
{
__be32 *p;
RESERVE_SPACE(8+NFS4_STATEID_SIZE);
WRITE32(OP_CLOSE);
WRITE32(arg->seqid->sequence->counter);
WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
return 0;
}
static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args)
{
__be32 *p;
RESERVE_SPACE(16);
WRITE32(OP_COMMIT);
WRITE64(args->offset);
WRITE32(args->count);
return 0;
}
static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create)
{
__be32 *p;
RESERVE_SPACE(8);
WRITE32(OP_CREATE);
WRITE32(create->ftype);
switch (create->ftype) {
case NF4LNK:
RESERVE_SPACE(4);
WRITE32(create->u.symlink.len);
xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
break;
case NF4BLK: case NF4CHR:
RESERVE_SPACE(8);
WRITE32(create->u.device.specdata1);
WRITE32(create->u.device.specdata2);
break;
default:
break;
}
RESERVE_SPACE(4 + create->name->len);
WRITE32(create->name->len);
WRITEMEM(create->name->name, create->name->len);
return encode_attrs(xdr, create->attrs, create->server);
}
static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap)
{
__be32 *p;
RESERVE_SPACE(12);
WRITE32(OP_GETATTR);
WRITE32(1);
WRITE32(bitmap);
return 0;
}
static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1)
{
__be32 *p;
RESERVE_SPACE(16);
WRITE32(OP_GETATTR);
WRITE32(2);
WRITE32(bm0);
WRITE32(bm1);
return 0;
}
static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
{
return encode_getattr_two(xdr,
bitmask[0] & nfs4_fattr_bitmap[0],
bitmask[1] & nfs4_fattr_bitmap[1]);
}
static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask)
{
return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
bitmask[1] & nfs4_fsinfo_bitmap[1]);
}
static int encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask)
{
return encode_getattr_two(xdr,
bitmask[0] & nfs4_fs_locations_bitmap[0],
bitmask[1] & nfs4_fs_locations_bitmap[1]);
}
static int encode_getfh(struct xdr_stream *xdr)
{
__be32 *p;
RESERVE_SPACE(4);
WRITE32(OP_GETFH);
return 0;
}
static int encode_link(struct xdr_stream *xdr, const struct qstr *name)
{
__be32 *p;
RESERVE_SPACE(8 + name->len);
WRITE32(OP_LINK);
WRITE32(name->len);
WRITEMEM(name->name, name->len);
return 0;
}
static inline int nfs4_lock_type(struct file_lock *fl, int block)
{
if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
return block ? NFS4_READW_LT : NFS4_READ_LT;
return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
}
static inline uint64_t nfs4_lock_length(struct file_lock *fl)
{
if (fl->fl_end == OFFSET_MAX)
return ~(uint64_t)0;
return fl->fl_end - fl->fl_start + 1;
}
/*
* opcode,type,reclaim,offset,length,new_lock_owner = 32
* open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
*/
static int encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args)
{
__be32 *p;
RESERVE_SPACE(32);
WRITE32(OP_LOCK);
WRITE32(nfs4_lock_type(args->fl, args->block));
WRITE32(args->reclaim);
WRITE64(args->fl->fl_start);
WRITE64(nfs4_lock_length(args->fl));
WRITE32(args->new_lock_owner);
if (args->new_lock_owner){
RESERVE_SPACE(4+NFS4_STATEID_SIZE+32);
WRITE32(args->open_seqid->sequence->counter);
WRITEMEM(args->open_stateid->data, NFS4_STATEID_SIZE);
WRITE32(args->lock_seqid->sequence->counter);
WRITE64(args->lock_owner.clientid);
WRITE32(16);
WRITEMEM("lock id:", 8);
WRITE64(args->lock_owner.id);
}
else {
RESERVE_SPACE(NFS4_STATEID_SIZE+4);
WRITEMEM(args->lock_stateid->data, NFS4_STATEID_SIZE);
WRITE32(args->lock_seqid->sequence->counter);
}
return 0;
}
static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args)
{
__be32 *p;
RESERVE_SPACE(52);
WRITE32(OP_LOCKT);
WRITE32(nfs4_lock_type(args->fl, 0));
WRITE64(args->fl->fl_start);
WRITE64(nfs4_lock_length(args->fl));
WRITE64(args->lock_owner.clientid);
WRITE32(16);
WRITEMEM("lock id:", 8);
WRITE64(args->lock_owner.id);
return 0;
}
static int encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args)
{
__be32 *p;
RESERVE_SPACE(12+NFS4_STATEID_SIZE+16);
WRITE32(OP_LOCKU);
WRITE32(nfs4_lock_type(args->fl, 0));
WRITE32(args->seqid->sequence->counter);
WRITEMEM(args->stateid->data, NFS4_STATEID_SIZE);
WRITE64(args->fl->fl_start);
WRITE64(nfs4_lock_length(args->fl));
return 0;
}
static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
{
int len = name->len;
__be32 *p;
RESERVE_SPACE(8 + len);
WRITE32(OP_LOOKUP);
WRITE32(len);
WRITEMEM(name->name, len);
return 0;
}
static void encode_share_access(struct xdr_stream *xdr, int open_flags)
{
__be32 *p;
RESERVE_SPACE(8);
switch (open_flags & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
WRITE32(NFS4_SHARE_ACCESS_READ);
break;
case FMODE_WRITE:
WRITE32(NFS4_SHARE_ACCESS_WRITE);
break;
case FMODE_READ|FMODE_WRITE:
WRITE32(NFS4_SHARE_ACCESS_BOTH);
break;
default:
BUG();
}
WRITE32(0); /* for linux, share_deny = 0 always */
}
static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
{
__be32 *p;
/*
* opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
* owner 4 = 32
*/
RESERVE_SPACE(8);
WRITE32(OP_OPEN);
WRITE32(arg->seqid->sequence->counter);
encode_share_access(xdr, arg->open_flags);
RESERVE_SPACE(28);
WRITE64(arg->clientid);
WRITE32(16);
WRITEMEM("open id:", 8);
WRITE64(arg->id);
}
static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
{
__be32 *p;
RESERVE_SPACE(4);
switch(arg->open_flags & O_EXCL) {
case 0:
WRITE32(NFS4_CREATE_UNCHECKED);
encode_attrs(xdr, arg->u.attrs, arg->server);
break;
default:
WRITE32(NFS4_CREATE_EXCLUSIVE);
encode_nfs4_verifier(xdr, &arg->u.verifier);
}
}
static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
{
__be32 *p;
RESERVE_SPACE(4);
switch (arg->open_flags & O_CREAT) {
case 0:
WRITE32(NFS4_OPEN_NOCREATE);
break;
default:
BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
WRITE32(NFS4_OPEN_CREATE);
encode_createmode(xdr, arg);
}
}
static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type)
{
__be32 *p;
RESERVE_SPACE(4);
switch (delegation_type) {
case 0:
WRITE32(NFS4_OPEN_DELEGATE_NONE);
break;
case FMODE_READ:
WRITE32(NFS4_OPEN_DELEGATE_READ);
break;
case FMODE_WRITE|FMODE_READ:
WRITE32(NFS4_OPEN_DELEGATE_WRITE);
break;
default:
BUG();
}
}
static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
{
__be32 *p;
RESERVE_SPACE(4);
WRITE32(NFS4_OPEN_CLAIM_NULL);
encode_string(xdr, name->len, name->name);
}
static inline void encode_claim_previous(struct xdr_stream *xdr, int type)
{
__be32 *p;
RESERVE_SPACE(4);
WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
encode_delegation_type(xdr, type);
}
static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
{
__be32 *p;
RESERVE_SPACE(4+NFS4_STATEID_SIZE);
WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
encode_string(xdr, name->len, name->name);
}
static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg)
{
encode_openhdr(xdr, arg);
encode_opentype(xdr, arg);
switch (arg->claim) {
case NFS4_OPEN_CLAIM_NULL:
encode_claim_null(xdr, arg->name);
break;
case NFS4_OPEN_CLAIM_PREVIOUS:
encode_claim_previous(xdr, arg->u.delegation_type);
break;
case NFS4_OPEN_CLAIM_DELEGATE_CUR:
encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
break;
default:
BUG();
}
return 0;
}
static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg)
{
__be32 *p;
RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
WRITE32(OP_OPEN_CONFIRM);
WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
WRITE32(arg->seqid->sequence->counter);
return 0;
}
static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
{
__be32 *p;
RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
WRITE32(OP_OPEN_DOWNGRADE);
WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
WRITE32(arg->seqid->sequence->counter);
encode_share_access(xdr, arg->open_flags);
return 0;
}
static int
encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh)
{
int len = fh->size;
__be32 *p;
RESERVE_SPACE(8 + len);
WRITE32(OP_PUTFH);
WRITE32(len);
WRITEMEM(fh->data, len);
return 0;
}
static int encode_putrootfh(struct xdr_stream *xdr)
{
__be32 *p;
RESERVE_SPACE(4);
WRITE32(OP_PUTROOTFH);
return 0;
}
static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
{
nfs4_stateid stateid;
__be32 *p;
RESERVE_SPACE(NFS4_STATEID_SIZE);
if (ctx->state != NULL) {
nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
WRITEMEM(stateid.data, NFS4_STATEID_SIZE);
} else
WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
}
static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
{
__be32 *p;
RESERVE_SPACE(4);
WRITE32(OP_READ);
encode_stateid(xdr, args->context);
RESERVE_SPACE(12);
WRITE64(args->offset);
WRITE32(args->count);
return 0;
}
static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
{
uint32_t attrs[2] = {
FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
FATTR4_WORD1_MOUNTED_ON_FILEID,
};
__be32 *p;
RESERVE_SPACE(12+NFS4_VERIFIER_SIZE+20);
WRITE32(OP_READDIR);
WRITE64(readdir->cookie);
WRITEMEM(readdir->verifier.data, NFS4_VERIFIER_SIZE);
WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
WRITE32(readdir->count);
WRITE32(2);
/* Switch to mounted_on_fileid if the server supports it */
if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
attrs[0] &= ~FATTR4_WORD0_FILEID;
else
attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
WRITE32(attrs[0] & readdir->bitmask[0]);
WRITE32(attrs[1] & readdir->bitmask[1]);
dprintk("%s: cookie = %Lu, verifier = 0x%x%x, bitmap = 0x%x%x\n",
__FUNCTION__,
(unsigned long long)readdir->cookie,
((u32 *)readdir->verifier.data)[0],
((u32 *)readdir->verifier.data)[1],
attrs[0] & readdir->bitmask[0],
attrs[1] & readdir->bitmask[1]);
return 0;
}
static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
{
__be32 *p;
RESERVE_SPACE(4);
WRITE32(OP_READLINK);
return 0;
}
static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
{
__be32 *p;
RESERVE_SPACE(8 + name->len);
WRITE32(OP_REMOVE);
WRITE32(name->len);
WRITEMEM(name->name, name->len);
return 0;
}
static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname)
{
__be32 *p;
RESERVE_SPACE(8 + oldname->len);
WRITE32(OP_RENAME);
WRITE32(oldname->len);
WRITEMEM(oldname->name, oldname->len);
RESERVE_SPACE(4 + newname->len);
WRITE32(newname->len);
WRITEMEM(newname->name, newname->len);
return 0;
}
static int encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid)
{
__be32 *p;
RESERVE_SPACE(12);
WRITE32(OP_RENEW);
WRITE64(client_stateid->cl_clientid);
return 0;
}
static int
encode_restorefh(struct xdr_stream *xdr)
{
__be32 *p;
RESERVE_SPACE(4);
WRITE32(OP_RESTOREFH);
return 0;
}
static int
encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg)
{
__be32 *p;
RESERVE_SPACE(4+NFS4_STATEID_SIZE);
WRITE32(OP_SETATTR);
WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
RESERVE_SPACE(2*4);
WRITE32(1);
WRITE32(FATTR4_WORD0_ACL);
if (arg->acl_len % 4)
return -EINVAL;
RESERVE_SPACE(4);
WRITE32(arg->acl_len);
xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
return 0;
}
static int
encode_savefh(struct xdr_stream *xdr)
{
__be32 *p;
RESERVE_SPACE(4);
WRITE32(OP_SAVEFH);
return 0;
}
static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server)
{
int status;
__be32 *p;
RESERVE_SPACE(4+NFS4_STATEID_SIZE);
WRITE32(OP_SETATTR);
WRITEMEM(arg->stateid.data, NFS4_STATEID_SIZE);
if ((status = encode_attrs(xdr, arg->iap, server)))
return status;
return 0;
}
static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid)
{
__be32 *p;
RESERVE_SPACE(4 + NFS4_VERIFIER_SIZE);
WRITE32(OP_SETCLIENTID);
WRITEMEM(setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
RESERVE_SPACE(4);
WRITE32(setclientid->sc_prog);
encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
RESERVE_SPACE(4);
WRITE32(setclientid->sc_cb_ident);
return 0;
}
static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs_client *client_state)
{
__be32 *p;
RESERVE_SPACE(12 + NFS4_VERIFIER_SIZE);
WRITE32(OP_SETCLIENTID_CONFIRM);
WRITE64(client_state->cl_clientid);
WRITEMEM(client_state->cl_confirm.data, NFS4_VERIFIER_SIZE);
return 0;
}
static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
{
__be32 *p;
RESERVE_SPACE(4);
WRITE32(OP_WRITE);
encode_stateid(xdr, args->context);
RESERVE_SPACE(16);
WRITE64(args->offset);
WRITE32(args->stable);
WRITE32(args->count);
xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
return 0;
}
static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid)
{
__be32 *p;
RESERVE_SPACE(4+NFS4_STATEID_SIZE);
WRITE32(OP_DELEGRETURN);
WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
return 0;
}
/*
* END OF "GENERIC" ENCODE ROUTINES.
*/
/*
* Encode an ACCESS request
*/
static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 3,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (status != 0)
goto out;
status = encode_access(&xdr, args->access);
if (status != 0)
goto out;
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* Encode LOOKUP request
*/
static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 4,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
goto out;
if ((status = encode_lookup(&xdr, args->name)) != 0)
goto out;
if ((status = encode_getfh(&xdr)) != 0)
goto out;
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* Encode LOOKUP_ROOT request
*/
static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 3,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
if ((status = encode_putrootfh(&xdr)) != 0)
goto out;
if ((status = encode_getfh(&xdr)) == 0)
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* Encode REMOVE request
*/
static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 3,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
if ((status = encode_putfh(&xdr, args->fh)) != 0)
goto out;
if ((status = encode_remove(&xdr, &args->name)) != 0)
goto out;
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* Encode RENAME request
*/
static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs4_rename_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 7,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
if ((status = encode_putfh(&xdr, args->old_dir)) != 0)
goto out;
if ((status = encode_savefh(&xdr)) != 0)
goto out;
if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
goto out;
if ((status = encode_rename(&xdr, args->old_name, args->new_name)) != 0)
goto out;
if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
goto out;
if ((status = encode_restorefh(&xdr)) != 0)
goto out;
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* Encode LINK request
*/
static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 7,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
if ((status = encode_putfh(&xdr, args->fh)) != 0)
goto out;
if ((status = encode_savefh(&xdr)) != 0)
goto out;
if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
goto out;
if ((status = encode_link(&xdr, args->name)) != 0)
goto out;
if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
goto out;
if ((status = encode_restorefh(&xdr)) != 0)
goto out;
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* Encode CREATE request
*/
static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 7,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
goto out;
if ((status = encode_savefh(&xdr)) != 0)
goto out;
if ((status = encode_create(&xdr, args)) != 0)
goto out;
if ((status = encode_getfh(&xdr)) != 0)
goto out;
if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
goto out;
if ((status = encode_restorefh(&xdr)) != 0)
goto out;
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* Encode SYMLINK request
*/
static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
{
return nfs4_xdr_enc_create(req, p, args);
}
/*
* Encode GETATTR request
*/
static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
if ((status = encode_putfh(&xdr, args->fh)) == 0)
status = encode_getfattr(&xdr, args->bitmask);
return status;
}
/*
* Encode a CLOSE request
*/
static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 3,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if(status)
goto out;
status = encode_close(&xdr, args);
if (status != 0)
goto out;
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* Encode an OPEN request
*/
static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 7,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (status)
goto out;
status = encode_savefh(&xdr);
if (status)
goto out;
status = encode_open(&xdr, args);
if (status)
goto out;
status = encode_getfh(&xdr);
if (status)
goto out;
status = encode_getfattr(&xdr, args->bitmask);
if (status)
goto out;
status = encode_restorefh(&xdr);
if (status)
goto out;
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* Encode an OPEN_CONFIRM request
*/
static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if(status)
goto out;
status = encode_open_confirm(&xdr, args);
out:
return status;
}
/*
* Encode an OPEN request with no attributes.
*/
static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 3,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (status)
goto out;
status = encode_open(&xdr, args);
if (status)
goto out;
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* Encode an OPEN_DOWNGRADE request
*/
static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 3,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (status)
goto out;
status = encode_open_downgrade(&xdr, args);
if (status != 0)
goto out;
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* Encode a LOCK request
*/
static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if(status)
goto out;
status = encode_lock(&xdr, args);
out:
return status;
}
/*
* Encode a LOCKT request
*/
static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if(status)
goto out;
status = encode_lockt(&xdr, args);
out:
return status;
}
/*
* Encode a LOCKU request
*/
static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if(status)
goto out;
status = encode_locku(&xdr, args);
out:
return status;
}
/*
* Encode a READLINK request
*/
static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
unsigned int replen;
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if(status)
goto out;
status = encode_readlink(&xdr, args, req);
/* set up reply kvec
* toplevel_status + taglen + rescount + OP_PUTFH + status
* + OP_READLINK + status + string length = 8
*/
replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_readlink_sz) << 2;
xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages,
args->pgbase, args->pglen);
out:
return status;
}
/*
* Encode a READDIR request
*/
static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
int replen;
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if(status)
goto out;
status = encode_readdir(&xdr, args, req);
/* set up reply kvec
* toplevel_status + taglen + rescount + OP_PUTFH + status
* + OP_READDIR + status + verifer(2) = 9
*/
replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_readdir_sz) << 2;
xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages,
args->pgbase, args->count);
dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
__FUNCTION__, replen, args->pages,
args->pgbase, args->count);
out:
return status;
}
/*
* Encode a READ request
*/
static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
{
struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int replen, status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (status)
goto out;
status = encode_read(&xdr, args);
if (status)
goto out;
/* set up reply kvec
* toplevel status + taglen=0 + rescount + OP_PUTFH + status
* + OP_READ + status + eof + datalen = 9
*/
replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
xdr_inline_pages(&req->rq_rcv_buf, replen,
args->pages, args->pgbase, args->count);
req->rq_rcv_buf.flags |= XDRBUF_READ;
out:
return status;
}
/*
* Encode an SETATTR request
*/
static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 3,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if(status)
goto out;
status = encode_setattr(&xdr, args, args->server);
if(status)
goto out;
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* Encode a GETACL request
*/
static int
nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
struct nfs_getaclargs *args)
{
struct xdr_stream xdr;
struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
struct compound_hdr hdr = {
.nops = 2,
};
int replen, status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (status)
goto out;
status = encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0);
/* set up reply buffer: */
replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
xdr_inline_pages(&req->rq_rcv_buf, replen,
args->acl_pages, args->acl_pgbase, args->acl_len);
out:
return status;
}
/*
* Encode a WRITE request
*/
static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 3,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (status)
goto out;
status = encode_write(&xdr, args);
if (status)
goto out;
req->rq_snd_buf.flags |= XDRBUF_WRITE;
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* a COMMIT request
*/
static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 3,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (status)
goto out;
status = encode_commit(&xdr, args);
if (status)
goto out;
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* FSINFO request
*/
static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (!status)
status = encode_fsinfo(&xdr, args->bitmask);
return status;
}
/*
* a PATHCONF request
*/
static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (!status)
status = encode_getattr_one(&xdr,
args->bitmask[0] & nfs4_pathconf_bitmap[0]);
return status;
}
/*
* a STATFS request
*/
static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (status == 0)
status = encode_getattr_two(&xdr,
args->bitmask[0] & nfs4_statfs_bitmap[0],
args->bitmask[1] & nfs4_statfs_bitmap[1]);
return status;
}
/*
* GETATTR_BITMAP request
*/
static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p, const struct nfs_fh *fhandle)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, fhandle);
if (status == 0)
status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
FATTR4_WORD0_LINK_SUPPORT|
FATTR4_WORD0_SYMLINK_SUPPORT|
FATTR4_WORD0_ACLSUPPORT);
return status;
}
/*
* a RENEW request
*/
static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 1,
};
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
return encode_renew(&xdr, clp);
}
/*
* a SETCLIENTID request
*/
static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 1,
};
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
return encode_setclientid(&xdr, sc);
}
/*
* a SETCLIENTID_CONFIRM request
*/
static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 3,
};
const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_setclientid_confirm(&xdr, clp);
if (!status)
status = encode_putrootfh(&xdr);
if (!status)
status = encode_fsinfo(&xdr, lease_bitmap);
return status;
}
/*
* DELEGRETURN request
*/
static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 3,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fhandle);
if (status != 0)
goto out;
status = encode_delegreturn(&xdr, args->stateid);
if (status != 0)
goto out;
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* Encode FS_LOCATIONS request
*/
static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 3,
};
struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
int replen;
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
goto out;
if ((status = encode_lookup(&xdr, args->name)) != 0)
goto out;
if ((status = encode_fs_locations(&xdr, args->bitmask)) != 0)
goto out;
/* set up reply
* toplevel_status + OP_PUTFH + status
* + OP_LOOKUP + status + OP_GETATTR + status = 7
*/
replen = (RPC_REPHDRSIZE + auth->au_rslack + 7) << 2;
xdr_inline_pages(&req->rq_rcv_buf, replen, &args->page,
0, PAGE_SIZE);
out:
return status;
}
/*
* START OF "GENERIC" DECODE ROUTINES.
* These may look a little ugly since they are imported from a "generic"
* set of XDR encode/decode routines which are intended to be shared by
* all of our NFSv4 implementations (OpenBSD, MacOS X...).
*
* If the pain of reading these is too great, it should be a straightforward
* task to translate them into Linux-specific versions which are more
* consistent with the style used in NFSv2/v3...
*/
#define READ32(x) (x) = ntohl(*p++)
#define READ64(x) do { \
(x) = (u64)ntohl(*p++) << 32; \
(x) |= ntohl(*p++); \
} while (0)
#define READTIME(x) do { \
p++; \
(x.tv_sec) = ntohl(*p++); \
(x.tv_nsec) = ntohl(*p++); \
} while (0)
#define COPYMEM(x,nbytes) do { \
memcpy((x), p, nbytes); \
p += XDR_QUADLEN(nbytes); \
} while (0)
#define READ_BUF(nbytes) do { \
p = xdr_inline_decode(xdr, nbytes); \
if (unlikely(!p)) { \
dprintk("nfs: %s: prematurely hit end of receive" \
" buffer\n", __FUNCTION__); \
dprintk("nfs: %s: xdr->p=%p, bytes=%u, xdr->end=%p\n", \
__FUNCTION__, xdr->p, nbytes, xdr->end); \
return -EIO; \
} \
} while (0)
static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
{
__be32 *p;
READ_BUF(4);
READ32(*len);
READ_BUF(*len);
*string = (char *)p;
return 0;
}
static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
{
__be32 *p;
READ_BUF(8);
READ32(hdr->status);
READ32(hdr->taglen);
READ_BUF(hdr->taglen + 4);
hdr->tag = (char *)p;
p += XDR_QUADLEN(hdr->taglen);
READ32(hdr->nops);
return 0;
}
static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
{
__be32 *p;
uint32_t opnum;
int32_t nfserr;
READ_BUF(8);
READ32(opnum);
if (opnum != expected) {
dprintk("nfs: Server returned operation"
" %d but we issued a request for %d\n",
opnum, expected);
return -EIO;
}
READ32(nfserr);
if (nfserr != NFS_OK)
return -nfs4_stat_to_errno(nfserr);
return 0;
}
/* Dummy routine */
static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
{
__be32 *p;
unsigned int strlen;
char *str;
READ_BUF(12);
return decode_opaque_inline(xdr, &strlen, &str);
}
static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
{
uint32_t bmlen;
__be32 *p;
READ_BUF(4);
READ32(bmlen);
bitmap[0] = bitmap[1] = 0;
READ_BUF((bmlen << 2));
if (bmlen > 0) {
READ32(bitmap[0]);
if (bmlen > 1)
READ32(bitmap[1]);
}
return 0;
}
static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
{
__be32 *p;
READ_BUF(4);
READ32(*attrlen);
*savep = xdr->p;
return 0;
}
static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
{
if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
decode_attr_bitmap(xdr, bitmask);
bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
} else
bitmask[0] = bitmask[1] = 0;
dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]);
return 0;
}
static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
{
__be32 *p;
*type = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
READ_BUF(4);
READ32(*type);
if (*type < NF4REG || *type > NF4NAMEDATTR) {
dprintk("%s: bad type %d\n", __FUNCTION__, *type);
return -EIO;
}
bitmap[0] &= ~FATTR4_WORD0_TYPE;
}
dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type);
return 0;
}
static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
{
__be32 *p;
*change = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
READ_BUF(8);
READ64(*change);
bitmap[0] &= ~FATTR4_WORD0_CHANGE;
}
dprintk("%s: change attribute=%Lu\n", __FUNCTION__,
(unsigned long long)*change);
return 0;
}
static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
{
__be32 *p;
*size = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
READ_BUF(8);
READ64(*size);
bitmap[0] &= ~FATTR4_WORD0_SIZE;
}
dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size);
return 0;
}
static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
__be32 *p;
*res = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
READ_BUF(4);
READ32(*res);
bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
}
dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
return 0;
}
static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
__be32 *p;
*res = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
READ_BUF(4);
READ32(*res);
bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
}
dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
return 0;
}
static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
{
__be32 *p;
fsid->major = 0;
fsid->minor = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
READ_BUF(16);
READ64(fsid->major);
READ64(fsid->minor);
bitmap[0] &= ~FATTR4_WORD0_FSID;
}
dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__,
(unsigned long long)fsid->major,
(unsigned long long)fsid->minor);
return 0;
}
static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
__be32 *p;
*res = 60;
if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
READ_BUF(4);
READ32(*res);
bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
}
dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res);
return 0;
}
static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
__be32 *p;
*res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
READ_BUF(4);
READ32(*res);
bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
}
dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res);
return 0;
}
static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
{
__be32 *p;
*fileid = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
READ_BUF(8);
READ64(*fileid);
bitmap[0] &= ~FATTR4_WORD0_FILEID;
}
dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
return 0;
}
static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
{
__be32 *p;
*fileid = 0;
if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
return -EIO;
if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
READ_BUF(8);
READ64(*fileid);
bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
}
dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
return 0;
}
static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
__be32 *p;
int status = 0;
*res = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
READ_BUF(8);
READ64(*res);
bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
}
dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
return status;
}
static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
__be32 *p;
int status = 0;
*res = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
READ_BUF(8);
READ64(*res);
bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
}
dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
return status;
}
static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
__be32 *p;
int status = 0;
*res = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
READ_BUF(8);
READ64(*res);
bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
}
dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
return status;
}
static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
{
u32 n;
__be32 *p;
int status = 0;
READ_BUF(4);
READ32(n);
if (n == 0)
goto root_path;
dprintk("path ");
path->ncomponents = 0;
while (path->ncomponents < n) {
struct nfs4_string *component = &path->components[path->ncomponents];
status = decode_opaque_inline(xdr, &component->len, &component->data);
if (unlikely(status != 0))
goto out_eio;
if (path->ncomponents != n)
dprintk("/");
dprintk("%s", component->data);
if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
path->ncomponents++;
else {
dprintk("cannot parse %d components in path\n", n);
goto out_eio;
}
}
out:
dprintk("\n");
return status;
root_path:
/* a root pathname is sent as a zero component4 */
path->ncomponents = 1;
path->components[0].len=0;
path->components[0].data=NULL;
dprintk("path /\n");
goto out;
out_eio:
dprintk(" status %d", status);
status = -EIO;
goto out;
}
static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
{
int n;
__be32 *p;
int status = -EIO;
if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
goto out;
status = 0;
if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
goto out;
dprintk("%s: fsroot ", __FUNCTION__);
status = decode_pathname(xdr, &res->fs_path);
if (unlikely(status != 0))
goto out;
READ_BUF(4);
READ32(n);
if (n <= 0)
goto out_eio;
res->nlocations = 0;
while (res->nlocations < n) {
u32 m;
struct nfs4_fs_location *loc = &res->locations[res->nlocations];
READ_BUF(4);
READ32(m);
loc->nservers = 0;
dprintk("%s: servers ", __FUNCTION__);
while (loc->nservers < m) {
struct nfs4_string *server = &loc->servers[loc->nservers];
status = decode_opaque_inline(xdr, &server->len, &server->data);
if (unlikely(status != 0))
goto out_eio;
dprintk("%s ", server->data);
if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
loc->nservers++;
else {
unsigned int i;
dprintk("%s: using first %u of %u servers "
"returned for location %u\n",
__FUNCTION__,
NFS4_FS_LOCATION_MAXSERVERS,
m, res->nlocations);
for (i = loc->nservers; i < m; i++) {
unsigned int len;
char *data;
status = decode_opaque_inline(xdr, &len, &data);
if (unlikely(status != 0))
goto out_eio;
}
}
}
status = decode_pathname(xdr, &loc->rootpath);
if (unlikely(status != 0))
goto out_eio;
if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
res->nlocations++;
}
out:
dprintk("%s: fs_locations done, error = %d\n", __FUNCTION__, status);
return status;
out_eio:
status = -EIO;
goto out;
}
static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
__be32 *p;
int status = 0;
*res = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
READ_BUF(8);
READ64(*res);
bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
}
dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res);
return status;
}
static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
{
__be32 *p;
int status = 0;
*maxlink = 1;
if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
READ_BUF(4);
READ32(*maxlink);
bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
}
dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink);
return status;
}
static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
{
__be32 *p;
int status = 0;
*maxname = 1024;
if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
READ_BUF(4);
READ32(*maxname);
bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
}
dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname);
return status;
}
static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
__be32 *p;
int status = 0;
*res = 1024;
if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
uint64_t maxread;
READ_BUF(8);
READ64(maxread);
if (maxread > 0x7FFFFFFF)
maxread = 0x7FFFFFFF;
*res = (uint32_t)maxread;
bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
}
dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res);
return status;
}
static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
__be32 *p;
int status <