nfs4xdr.c 117.7 KB
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/*
 *  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>
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#include "nfs4_fs.h"
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#define NFSDBG_FACILITY		NFSDBG_XDR

/* Mapping from NFS error code to "errno" error code. */
#define errno_NFSERR_IO		EIO

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static int nfs4_stat_to_errno(int);
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/* 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: 
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 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT  >> 2)
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 */
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#define open_owner_id_maxsz	(1 + 4)
#define lock_owner_id_maxsz	(1 + 4)
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#define decode_lockowner_maxsz	(1 + XDR_QUADLEN(IDMAP_NAMESZ))
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#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)
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#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))
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#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))
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#define nfs4_fattr_bitmap_maxsz 3
#define encode_getattr_maxsz    (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
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#define nfs4_name_maxsz		(1 + ((3 + NFS4_MAXNAMLEN) >> 2))
#define nfs4_path_maxsz		(1 + ((3 + NFS4_MAXPATHLEN) >> 2))
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#define nfs4_owner_maxsz	(1 + XDR_QUADLEN(IDMAP_NAMESZ))
#define nfs4_group_maxsz	(1 + XDR_QUADLEN(IDMAP_NAMESZ))
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/* 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 + \
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				3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz))
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#define nfs4_fattr_maxsz	(nfs4_fattr_bitmap_maxsz + \
				nfs4_fattr_value_maxsz)
#define decode_getattr_maxsz    (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
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#define encode_attrs_maxsz	(nfs4_fattr_bitmap_maxsz + \
				 1 + 2 + 1 + \
				nfs4_owner_maxsz + \
				nfs4_group_maxsz + \
				4 + 4)
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#define encode_savefh_maxsz     (op_encode_hdr_maxsz)
#define decode_savefh_maxsz     (op_decode_hdr_maxsz)
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#define encode_restorefh_maxsz  (op_encode_hdr_maxsz)
#define decode_restorefh_maxsz  (op_decode_hdr_maxsz)
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#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 + \
				4 /*server->ip_addr*/ + \
				1 /*Netid*/ + \
				6 /*uaddr*/ + \
				6 + (NFS4_VERIFIER_SIZE >> 2))
#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)
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#define encode_lookup_maxsz	(op_encode_hdr_maxsz + nfs4_name_maxsz)
#define decode_lookup_maxsz	(op_decode_hdr_maxsz)
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#define encode_share_access_maxsz \
				(2)
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#define encode_createmode_maxsz	(1 + encode_attrs_maxsz)
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#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)
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#define decode_delegation_maxsz	(1 + decode_stateid_maxsz + 1 + \
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				decode_ace_maxsz)
#define decode_change_info_maxsz	(5)
#define decode_open_maxsz	(op_decode_hdr_maxsz + \
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				decode_stateid_maxsz + \
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				decode_change_info_maxsz + 1 + \
				nfs4_fattr_bitmap_maxsz + \
				decode_delegation_maxsz)
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#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)
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#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)
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#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)
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#define encode_symlink_maxsz	(op_encode_hdr_maxsz + \
				1 + nfs4_name_maxsz + \
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				1 + \
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				nfs4_fattr_maxsz)
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#define decode_symlink_maxsz	(op_decode_hdr_maxsz + 8)
#define encode_create_maxsz	(op_encode_hdr_maxsz + \
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				1 + 2 + nfs4_name_maxsz + \
				encode_attrs_maxsz)
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#define decode_create_maxsz	(op_decode_hdr_maxsz + \
				decode_change_info_maxsz + \
				nfs4_fattr_bitmap_maxsz)
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#define encode_statfs_maxsz	(encode_getattr_maxsz)
#define decode_statfs_maxsz	(decode_getattr_maxsz)
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#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
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#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)
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#define encode_fs_locations_maxsz \
				(encode_getattr_maxsz)
#define decode_fs_locations_maxsz \
				(0)
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#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 + \
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				encode_read_maxsz)
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#define NFS4_dec_read_sz	(compound_decode_hdr_maxsz + \
				decode_putfh_maxsz + \
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				decode_read_maxsz)
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#define NFS4_enc_readlink_sz	(compound_encode_hdr_maxsz + \
				encode_putfh_maxsz + \
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				encode_readlink_maxsz)
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#define NFS4_dec_readlink_sz	(compound_decode_hdr_maxsz + \
				decode_putfh_maxsz + \
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				decode_readlink_maxsz)
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#define NFS4_enc_readdir_sz	(compound_encode_hdr_maxsz + \
				encode_putfh_maxsz + \
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				encode_readdir_maxsz)
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#define NFS4_dec_readdir_sz	(compound_decode_hdr_maxsz + \
				decode_putfh_maxsz + \
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				decode_readdir_maxsz)
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#define NFS4_enc_write_sz	(compound_encode_hdr_maxsz + \
				encode_putfh_maxsz + \
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				encode_write_maxsz + \
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				encode_getattr_maxsz)
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#define NFS4_dec_write_sz	(compound_decode_hdr_maxsz + \
				decode_putfh_maxsz + \
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				decode_write_maxsz + \
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				decode_getattr_maxsz)
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#define NFS4_enc_commit_sz	(compound_encode_hdr_maxsz + \
				encode_putfh_maxsz + \
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				encode_commit_maxsz + \
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				encode_getattr_maxsz)
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#define NFS4_dec_commit_sz	(compound_decode_hdr_maxsz + \
				decode_putfh_maxsz + \
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				decode_commit_maxsz + \
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				decode_getattr_maxsz)
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#define NFS4_enc_open_sz        (compound_encode_hdr_maxsz + \
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				encode_putfh_maxsz + \
				encode_savefh_maxsz + \
				encode_open_maxsz + \
				encode_getfh_maxsz + \
				encode_getattr_maxsz + \
				encode_restorefh_maxsz + \
				encode_getattr_maxsz)
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#define NFS4_dec_open_sz        (compound_decode_hdr_maxsz + \
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				decode_putfh_maxsz + \
				decode_savefh_maxsz + \
				decode_open_maxsz + \
				decode_getfh_maxsz + \
				decode_getattr_maxsz + \
				decode_restorefh_maxsz + \
				decode_getattr_maxsz)
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#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)
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#define NFS4_enc_open_noattr_sz	(compound_encode_hdr_maxsz + \
					encode_putfh_maxsz + \
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					encode_open_maxsz + \
					encode_getattr_maxsz)
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#define NFS4_dec_open_noattr_sz	(compound_decode_hdr_maxsz + \
					decode_putfh_maxsz + \
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					decode_open_maxsz + \
					decode_getattr_maxsz)
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#define NFS4_enc_open_downgrade_sz \
				(compound_encode_hdr_maxsz + \
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				 encode_putfh_maxsz + \
				 encode_open_downgrade_maxsz + \
				 encode_getattr_maxsz)
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#define NFS4_dec_open_downgrade_sz \
				(compound_decode_hdr_maxsz + \
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				 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)
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#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 + \
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				encode_lock_maxsz)
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#define NFS4_dec_lock_sz        (compound_decode_hdr_maxsz + \
				decode_putfh_maxsz + \
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				decode_lock_maxsz)
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#define NFS4_enc_lockt_sz       (compound_encode_hdr_maxsz + \
				encode_putfh_maxsz + \
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				encode_lockt_maxsz)
#define NFS4_dec_lockt_sz       (compound_decode_hdr_maxsz + \
				 decode_putfh_maxsz + \
				 decode_lockt_maxsz)
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#define NFS4_enc_locku_sz       (compound_encode_hdr_maxsz + \
				encode_putfh_maxsz + \
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				encode_locku_maxsz)
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#define NFS4_dec_locku_sz       (compound_decode_hdr_maxsz + \
				decode_putfh_maxsz + \
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				decode_locku_maxsz)
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#define NFS4_enc_access_sz	(compound_encode_hdr_maxsz + \
				encode_putfh_maxsz + \
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				encode_access_maxsz + \
				encode_getattr_maxsz)
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#define NFS4_dec_access_sz	(compound_decode_hdr_maxsz + \
				decode_putfh_maxsz + \
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				decode_access_maxsz + \
				decode_getattr_maxsz)
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#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 + \
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				decode_lookup_maxsz + \
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				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 + \
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				encode_remove_maxsz + \
				encode_getattr_maxsz)
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#define NFS4_dec_remove_sz	(compound_decode_hdr_maxsz + \
				decode_putfh_maxsz + \
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				op_decode_hdr_maxsz + 5 + \
				decode_getattr_maxsz)
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#define NFS4_enc_rename_sz	(compound_encode_hdr_maxsz + \
				encode_putfh_maxsz + \
				encode_savefh_maxsz + \
				encode_putfh_maxsz + \
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				encode_rename_maxsz + \
				encode_getattr_maxsz + \
				encode_restorefh_maxsz + \
				encode_getattr_maxsz)
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#define NFS4_dec_rename_sz	(compound_decode_hdr_maxsz + \
				decode_putfh_maxsz + \
				decode_savefh_maxsz + \
				decode_putfh_maxsz + \
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				decode_rename_maxsz + \
				decode_getattr_maxsz + \
				decode_restorefh_maxsz + \
				decode_getattr_maxsz)
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#define NFS4_enc_link_sz	(compound_encode_hdr_maxsz + \
				encode_putfh_maxsz + \
				encode_savefh_maxsz + \
				encode_putfh_maxsz + \
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				encode_link_maxsz + \
				decode_getattr_maxsz + \
				encode_restorefh_maxsz + \
				decode_getattr_maxsz)
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#define NFS4_dec_link_sz	(compound_decode_hdr_maxsz + \
				decode_putfh_maxsz + \
				decode_savefh_maxsz + \
				decode_putfh_maxsz + \
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				decode_link_maxsz + \
				decode_getattr_maxsz + \
				decode_restorefh_maxsz + \
				decode_getattr_maxsz)
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#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 + \
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				encode_savefh_maxsz + \
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				encode_create_maxsz + \
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				encode_getfh_maxsz + \
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				encode_getattr_maxsz + \
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				encode_restorefh_maxsz + \
				encode_getattr_maxsz)
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#define NFS4_dec_create_sz	(compound_decode_hdr_maxsz + \
				decode_putfh_maxsz + \
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				decode_savefh_maxsz + \
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				decode_create_maxsz + \
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				decode_getfh_maxsz + \
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				decode_getattr_maxsz + \
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				decode_restorefh_maxsz + \
				decode_getattr_maxsz)
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#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 + \
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				encode_statfs_maxsz)
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#define NFS4_dec_statfs_sz	(compound_decode_hdr_maxsz + \
				decode_putfh_maxsz + \
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				decode_statfs_maxsz)
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#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
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				encode_putfh_maxsz + \
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				encode_getattr_maxsz)
#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
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				decode_putfh_maxsz + \
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				decode_getattr_maxsz)
#define NFS4_enc_delegreturn_sz	(compound_encode_hdr_maxsz + \
				encode_putfh_maxsz + \
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				encode_delegreturn_maxsz + \
				encode_getattr_maxsz)
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#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
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				decode_delegreturn_maxsz + \
				decode_getattr_maxsz)
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#define NFS4_enc_getacl_sz	(compound_encode_hdr_maxsz + \
				encode_putfh_maxsz + \
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				encode_getacl_maxsz)
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#define NFS4_dec_getacl_sz	(compound_decode_hdr_maxsz + \
				decode_putfh_maxsz + \
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				decode_getacl_maxsz)
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#define NFS4_enc_setacl_sz	(compound_encode_hdr_maxsz + \
				encode_putfh_maxsz + \
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				encode_setacl_maxsz)
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#define NFS4_dec_setacl_sz	(compound_decode_hdr_maxsz + \
				decode_putfh_maxsz + \
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				decode_setacl_maxsz)
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#define NFS4_enc_fs_locations_sz \
				(compound_encode_hdr_maxsz + \
				 encode_putfh_maxsz + \
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				 encode_lookup_maxsz + \
				 encode_fs_locations_maxsz)
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#define NFS4_dec_fs_locations_sz \
				(compound_decode_hdr_maxsz + \
				 decode_putfh_maxsz + \
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				 decode_lookup_maxsz + \
				 decode_fs_locations_maxsz)
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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)
{
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	__be32 *p;
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	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)
{
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	__be32 *p;
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	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)
{
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	__be32 *p;
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	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;
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	__be32 *p;
	__be32 *q;
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	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
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	 *            such as owner/group.
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	 */
	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) {
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		owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name);
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		if (owner_namelen < 0) {
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			dprintk("nfs: couldn't resolve uid %d to string\n",
					iap->ia_uid);
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			/* 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) {
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		owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group);
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		if (owner_grouplen < 0) {
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			dprintk("nfs: couldn't resolve gid %d to string\n",
					iap->ia_gid);
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			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;
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		WRITE32(iap->ia_mode & S_IALLUGO);
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	}
	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) {
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		printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
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				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)
{
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	__be32 *p;
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	RESERVE_SPACE(8);
	WRITE32(OP_ACCESS);
	WRITE32(access);
	
	return 0;
}

static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
{
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	RESERVE_SPACE(8+NFS4_STATEID_SIZE);
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	WRITE32(OP_CLOSE);
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	WRITE32(arg->seqid->sequence->counter);
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	WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
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	return 0;
}

static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args)
{
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        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)
{
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	RESERVE_SPACE(8);
	WRITE32(OP_CREATE);
	WRITE32(create->ftype);

	switch (create->ftype) {
	case NF4LNK:
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		RESERVE_SPACE(4);
		WRITE32(create->u.symlink.len);
		xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
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		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)
{
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        __be32 *p;
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        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)
{
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        __be32 *p;
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        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]);
}

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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]);
}

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static int encode_getfh(struct xdr_stream *xdr)
{
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	__be32 *p;
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	RESERVE_SPACE(4);
	WRITE32(OP_GETFH);

	return 0;
}

static int encode_link(struct xdr_stream *xdr, const struct qstr *name)
{
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	__be32 *p;
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	RESERVE_SPACE(8 + name->len);
	WRITE32(OP_LINK);
	WRITE32(name->len);
	WRITEMEM(name->name, name->len);
	
	return 0;
}

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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;
}

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/*
 * opcode,type,reclaim,offset,length,new_lock_owner = 32
 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
 */
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static int encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args)
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{
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	__be32 *p;
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	RESERVE_SPACE(32);
	WRITE32(OP_LOCK);
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	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){
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		RESERVE_SPACE(4+NFS4_STATEID_SIZE+32);
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		WRITE32(args->open_seqid->sequence->counter);
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		WRITEMEM(args->open_stateid->data, NFS4_STATEID_SIZE);
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		WRITE32(args->lock_seqid->sequence->counter);
		WRITE64(args->lock_owner.clientid);
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		WRITE32(16);
		WRITEMEM("lock id:", 8);
		WRITE64(args->lock_owner.id);
L
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	}
	else {
901 902
		RESERVE_SPACE(NFS4_STATEID_SIZE+4);
		WRITEMEM(args->lock_stateid->data, NFS4_STATEID_SIZE);
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		WRITE32(args->lock_seqid->sequence->counter);
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	}

	return 0;
}

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static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args)
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{
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	__be32 *p;
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913
	RESERVE_SPACE(52);
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	WRITE32(OP_LOCKT);
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	WRITE32(nfs4_lock_type(args->fl, 0));
	WRITE64(args->fl->fl_start);
	WRITE64(nfs4_lock_length(args->fl));
	WRITE64(args->lock_owner.clientid);
919 920 921
	WRITE32(16);
	WRITEMEM("lock id:", 8);
	WRITE64(args->lock_owner.id);
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	return 0;
}

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static int encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args)
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{
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	__be32 *p;
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930
	RESERVE_SPACE(12+NFS4_STATEID_SIZE+16);
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	WRITE32(OP_LOCKU);
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	WRITE32(nfs4_lock_type(args->fl, 0));
	WRITE32(args->seqid->sequence->counter);
934
	WRITEMEM(args->stateid->data, NFS4_STATEID_SIZE);
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	WRITE64(args->fl->fl_start);
	WRITE64(nfs4_lock_length(args->fl));
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	return 0;
}

static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
{
	int len = name->len;
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	__be32 *p;
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	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)
{
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	__be32 *p;
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	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)
{
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	__be32 *p;
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 /*
 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
 * owner 4 = 32
 */
	RESERVE_SPACE(8);
	WRITE32(OP_OPEN);
984
	WRITE32(arg->seqid->sequence->counter);
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	encode_share_access(xdr, arg->open_flags);
986
	RESERVE_SPACE(28);
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	WRITE64(arg->clientid);
988 989 990
	WRITE32(16);
	WRITEMEM("open id:", 8);
	WRITE64(arg->id);
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}

static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
{
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	__be32 *p;
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	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)
{
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	__be32 *p;
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	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)
{
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	__be32 *p;
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	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)
{
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	__be32 *p;
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	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)
{
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	__be32 *p;
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	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)
{
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	__be32 *p;
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1067
	RESERVE_SPACE(4+NFS4_STATEID_SIZE);
L
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	WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
1069
	WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
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	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)
{
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	__be32 *p;
L
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1097
	RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
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	WRITE32(OP_OPEN_CONFIRM);
1099
	WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
1100
	WRITE32(arg->seqid->sequence->counter);
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	return 0;
}

static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
{
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	__be32 *p;
L
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1108

1109
	RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
L
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1110
	WRITE32(OP_OPEN_DOWNGRADE);
1111
	WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
1112
	WRITE32(arg->seqid->sequence->counter);
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	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;
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	__be32 *p;
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	RESERVE_SPACE(8 + len);
	WRITE32(OP_PUTFH);
	WRITE32(len);
	WRITEMEM(fh->data, len);

	return 0;
}

static int encode_putrootfh(struct xdr_stream *xdr)
{
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        __be32 *p;
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        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;
A
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	__be32 *p;
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1145

1146
	RESERVE_SPACE(NFS4_STATEID_SIZE);
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	if (ctx->state != NULL) {
		nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
1149
		WRITEMEM(stateid.data, NFS4_STATEID_SIZE);
L
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	} else
1151
		WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
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}

static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
{
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	__be32 *p;
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1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171

	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)
{
1172 1173 1174 1175
	uint32_t attrs[2] = {
		FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
		FATTR4_WORD1_MOUNTED_ON_FILEID,
	};
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	__be32 *p;
L
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1178
	RESERVE_SPACE(12+NFS4_VERIFIER_SIZE+20);
L
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	WRITE32(OP_READDIR);
	WRITE64(readdir->cookie);
1181
	WRITEMEM(readdir->verifier.data, NFS4_VERIFIER_SIZE);
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	WRITE32(readdir->count >> 1);  /* We're not doing readdirplus */
	WRITE32(readdir->count);
	WRITE32(2);
1185 1186 1187 1188 1189 1190 1191
	/* 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]);
1192 1193 1194 1195 1196 1197 1198
	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]);
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1199 1200 1201 1202 1203 1204

	return 0;
}

static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
{
A
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	__be32 *p;
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	RESERVE_SPACE(4);
	WRITE32(OP_READLINK);

	return 0;
}

static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
{
A
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	__be32 *p;
L
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1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226

	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)
{
A
Al Viro 已提交
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	__be32 *p;
L
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1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240

	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;
}

1241
static int encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid)
L
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{
A
Al Viro 已提交
1243
	__be32 *p;
L
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1244 1245 1246 1247 1248 1249 1250 1251

	RESERVE_SPACE(12);
	WRITE32(OP_RENEW);
	WRITE64(client_stateid->cl_clientid);

	return 0;
}

1252 1253 1254
static int
encode_restorefh(struct xdr_stream *xdr)
{
A
Al Viro 已提交
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	__be32 *p;
1256 1257 1258 1259 1260 1261 1262

	RESERVE_SPACE(4);
	WRITE32(OP_RESTOREFH);

	return 0;
}

1263 1264 1265
static int
encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg)
{
A
Al Viro 已提交
1266
	__be32 *p;
1267

1268
	RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1269
	WRITE32(OP_SETATTR);
1270
	WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281
	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;
}

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static int
encode_savefh(struct xdr_stream *xdr)
{
A
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	__be32 *p;
L
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	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;
A
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	__be32 *p;
L
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1298
        RESERVE_SPACE(4+NFS4_STATEID_SIZE);
L
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        WRITE32(OP_SETATTR);
1300
	WRITEMEM(arg->stateid.data, NFS4_STATEID_SIZE);
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        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)
{
A
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	__be32 *p;
L
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1311

1312
	RESERVE_SPACE(4 + NFS4_VERIFIER_SIZE);
L
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1313
	WRITE32(OP_SETCLIENTID);
1314
	WRITEMEM(setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
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1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326

	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;
}

1327
static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs_client *client_state)
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{
A
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        __be32 *p;
L
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1330

1331
        RESERVE_SPACE(12 + NFS4_VERIFIER_SIZE);
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        WRITE32(OP_SETCLIENTID_CONFIRM);
        WRITE64(client_state->cl_clientid);
1334
        WRITEMEM(client_state->cl_confirm.data, NFS4_VERIFIER_SIZE);
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        return 0;
}

static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
{
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	__be32 *p;
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	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)
{
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	__be32 *p;
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1362
	RESERVE_SPACE(4+NFS4_STATEID_SIZE);
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	WRITE32(OP_DELEGRETURN);
1365
	WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
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	return 0;

}
/*
 * END OF "GENERIC" ENCODE ROUTINES.
 */

/*
 * Encode an ACCESS request
 */
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static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
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{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
1380
		.nops = 3,
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	};
	int status;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
1386 1387 1388 1389 1390 1391 1392 1393
	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:
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	return status;
}

/*
 * Encode LOOKUP request
 */
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static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
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{
	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
 */
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static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
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1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444
{
	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
 */
1445
static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
L
Linus Torvalds 已提交
1446 1447 1448
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
1449
		.nops = 3,
L
Linus Torvalds 已提交
1450 1451 1452 1453 1454
	};
	int status;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
1455 1456
	if ((status = encode_putfh(&xdr, args->fh)) != 0)
		goto out;
1457
	if ((status = encode_remove(&xdr, &args->name)) != 0)
1458 1459 1460
		goto out;
	status = encode_getfattr(&xdr, args->bitmask);
out:
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Linus Torvalds 已提交
1461 1462 1463 1464 1465 1466
	return status;
}

/*
 * Encode RENAME request
 */
A
Al Viro 已提交
1467
static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs4_rename_arg *args)
L
Linus Torvalds 已提交
1468 1469 1470
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
1471
		.nops = 7,
L
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1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482
	};
	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;
1483 1484 1485 1486 1487 1488 1489
	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);
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out:
	return status;
}

/*
 * Encode LINK request
 */
A
Al Viro 已提交
1497
static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
L
Linus Torvalds 已提交
1498 1499 1500
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
1501
		.nops = 7,
L
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1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512
	};
	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;
1513 1514 1515 1516 1517 1518 1519
	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);
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out:
	return status;
}

/*
 * Encode CREATE request
 */
A
Al Viro 已提交
1527
static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
L
Linus Torvalds 已提交
1528 1529 1530
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
1531
		.nops = 7,
L
Linus Torvalds 已提交
1532 1533 1534 1535 1536 1537 1538
	};
	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;
1539 1540
	if ((status = encode_savefh(&xdr)) != 0)
		goto out;
L
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1541 1542 1543 1544
	if ((status = encode_create(&xdr, args)) != 0)
		goto out;
	if ((status = encode_getfh(&xdr)) != 0)
		goto out;
1545 1546 1547 1548
	if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
		goto out;
	if ((status = encode_restorefh(&xdr)) != 0)
		goto out;
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	status = encode_getfattr(&xdr, args->bitmask);
out:
	return status;
}

/*
 * Encode SYMLINK request
 */
A
Al Viro 已提交
1557
static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
L
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{
	return nfs4_xdr_enc_create(req, p, args);
}

/*
 * Encode GETATTR request
 */
A
Al Viro 已提交
1565
static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
L
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1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582
{
	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
 */
A
Al Viro 已提交
1583
static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
L
Linus Torvalds 已提交
1584 1585 1586
{
        struct xdr_stream xdr;
        struct compound_hdr hdr = {
1587
                .nops   = 3,
L
Linus Torvalds 已提交
1588 1589 1590 1591 1592 1593 1594 1595 1596
        };
        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);
1597 1598 1599
	if (status != 0)
		goto out;
	status = encode_getfattr(&xdr, args->bitmask);
L
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out:
        return status;
}

/*
 * Encode an OPEN request
 */
A
Al Viro 已提交
1607
static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
L
Linus Torvalds 已提交
1608 1609 1610
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
1611
		.nops = 7,
L
Linus Torvalds 已提交
1612 1613 1614 1615 1616 1617
	};
	int status;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
	status = encode_putfh(&xdr, args->fh);
1618 1619 1620
	if (status)
		goto out;
	status = encode_savefh(&xdr);
L
Linus Torvalds 已提交
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	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);
1630 1631 1632 1633 1634 1635
	if (status)
		goto out;
	status = encode_restorefh(&xdr);
	if (status)
		goto out;
	status = encode_getfattr(&xdr, args->bitmask);
L
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1636 1637 1638 1639 1640 1641 1642
out:
	return status;
}

/*
 * Encode an OPEN_CONFIRM request
 */
A
Al Viro 已提交
1643
static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
L
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1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663
{
	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.
 */
A
Al Viro 已提交
1664
static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
L
Linus Torvalds 已提交
1665 1666 1667
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
1668
		.nops   = 3,
L
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1669 1670 1671 1672 1673 1674 1675 1676 1677
	};
	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);
1678 1679 1680
	if (status)
		goto out;
	status = encode_getfattr(&xdr, args->bitmask);
L
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out:
	return status;
}

/*
 * Encode an OPEN_DOWNGRADE request
 */
A
Al Viro 已提交
1688
static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
L
Linus Torvalds 已提交
1689 1690 1691
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
1692
		.nops	= 3,
L
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1693 1694 1695 1696 1697 1698 1699 1700 1701
	};
	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);
1702 1703 1704
	if (status != 0)
		goto out;
	status = encode_getfattr(&xdr, args->bitmask);
L
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out:
	return status;
}

/*
 * Encode a LOCK request
 */
A
Al Viro 已提交
1712
static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
L
Linus Torvalds 已提交
1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732
{
	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
 */
A
Al Viro 已提交
1733
static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
L
Linus Torvalds 已提交
1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753
{
	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
 */
A
Al Viro 已提交
1754
static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
L
Linus Torvalds 已提交
1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774
{
	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
 */
A
Al Viro 已提交
1775
static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
L
Linus Torvalds 已提交
1776 1777 1778 1779 1780
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 2,
	};
1781 1782
	struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
	unsigned int replen;
L
Linus Torvalds 已提交
1783 1784 1785 1786 1787 1788 1789 1790
	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);
1791 1792 1793 1794 1795 1796 1797 1798 1799

	/* 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);

L
Linus Torvalds 已提交
1800 1801 1802 1803 1804 1805 1806
out:
	return status;
}

/*
 * Encode a READDIR request
 */
A
Al Viro 已提交
1807
static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
L
Linus Torvalds 已提交
1808 1809 1810 1811 1812
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 2,
	};
1813 1814
	struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
	int replen;
L
Linus Torvalds 已提交
1815 1816 1817 1818 1819 1820 1821 1822
	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);
1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834

	/* 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);

L
Linus Torvalds 已提交
1835 1836 1837 1838 1839 1840 1841
out:
	return status;
}

/*
 * Encode a READ request
 */
A
Al Viro 已提交
1842
static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
L
Linus Torvalds 已提交
1843
{
1844
	struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
L
Linus Torvalds 已提交
1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866
	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);
1867
	req->rq_rcv_buf.flags |= XDRBUF_READ;
L
Linus Torvalds 已提交
1868 1869 1870 1871 1872 1873 1874
out:
	return status;
}

/*
 * Encode an SETATTR request
 */
A
Al Viro 已提交
1875
static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
L
Linus Torvalds 已提交
1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896

{
        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;
}

1897 1898 1899 1900
/*
 * Encode a GETACL request
 */
static int
A
Al Viro 已提交
1901
nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
1902 1903 1904
		struct nfs_getaclargs *args)
{
	struct xdr_stream xdr;
1905
	struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924
	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;
}

L
Linus Torvalds 已提交
1925 1926 1927
/*
 * Encode a WRITE request
 */
A
Al Viro 已提交
1928
static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
L
Linus Torvalds 已提交
1929 1930 1931
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
1932
		.nops = 3,
L
Linus Torvalds 已提交
1933 1934 1935 1936 1937 1938 1939 1940 1941
	};
	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);
1942 1943
	if (status)
		goto out;
1944
	req->rq_snd_buf.flags |= XDRBUF_WRITE;
1945
	status = encode_getfattr(&xdr, args->bitmask);
L
Linus Torvalds 已提交
1946 1947 1948 1949 1950 1951 1952
out:
	return status;
}

/*
 *  a COMMIT request
 */
A
Al Viro 已提交
1953
static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
L
Linus Torvalds 已提交
1954 1955 1956
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
1957
		.nops = 3,
L
Linus Torvalds 已提交
1958 1959 1960 1961 1962 1963 1964 1965 1966
	};
	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);
1967 1968 1969
	if (status)
		goto out;
	status = encode_getfattr(&xdr, args->bitmask);
L
Linus Torvalds 已提交
1970 1971 1972 1973 1974 1975 1976
out:
	return status;
}

/*
 * FSINFO request
 */
A
Al Viro 已提交
1977
static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
L
Linus Torvalds 已提交
1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995
{
	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
 */
A
Al Viro 已提交
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static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
L
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1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
{
	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
 */
A
Al Viro 已提交
2016
static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
L
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2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036
{
	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
 */
A
Al Viro 已提交
2037
static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p, const struct nfs_fh *fhandle)
L
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2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058
{
	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
 */
A
Al Viro 已提交
2059
static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
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{
	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
 */
A
Al Viro 已提交
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static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
L
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2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088
{
	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
 */
A
Al Viro 已提交
2089
static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
L
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{
	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
 */
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static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
L
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{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
2115
		.nops = 3,
L
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2116 2117 2118 2119 2120
	};
	int status;

	xdr_init_encode(&xdr, &req->rq_snd_buf, p);
	encode_compound_hdr(&xdr, &hdr);
2121 2122 2123 2124 2125 2126 2127 2128
	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:
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	return status;
}

2132 2133 2134
/*
 * Encode FS_LOCATIONS request
 */
A
Al Viro 已提交
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static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
2136 2137 2138 2139 2140
{
	struct xdr_stream xdr;
	struct compound_hdr hdr = {
		.nops = 3,
	};
2141
	struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
2142 2143 2144 2145 2146 2147 2148 2149 2150
	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;
2151
	if ((status = encode_fs_locations(&xdr, args->bitmask)) != 0)
2152 2153
		goto out;
	/* set up reply
2154
	 *   toplevel_status + OP_PUTFH + status
2155 2156 2157 2158 2159 2160 2161 2162 2163
	 *   + 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;
}

L
Linus Torvalds 已提交
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/*
 * 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); \
2191
	if (unlikely(!p)) { \
2192
		dprintk("nfs: %s: prematurely hit end of receive" \
2193
				" buffer\n", __FUNCTION__); \
2194
		dprintk("nfs: %s: xdr->p=%p, bytes=%u, xdr->end=%p\n", \
2195
				__FUNCTION__, xdr->p, nbytes, xdr->end); \
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		return -EIO; \
	} \
} while (0)

2200
static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
L
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{
A
Al Viro 已提交
2202
	__be32 *p;
L
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2203 2204 2205 2206 2207 2208 2209 2210 2211 2212

	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)
{
A
Al Viro 已提交
2213
	__be32 *p;
L
Linus Torvalds 已提交
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	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)
{
A
Al Viro 已提交
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	__be32 *p;
L
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2229 2230 2231 2232 2233 2234
	uint32_t opnum;
	int32_t nfserr;

	READ_BUF(8);
	READ32(opnum);
	if (opnum != expected) {
2235 2236
		dprintk("nfs: Server returned operation"
			" %d but we issued a request for %d\n",
L
Linus Torvalds 已提交
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				opnum, expected);
		return -EIO;
	}
	READ32(nfserr);
	if (nfserr != NFS_OK)
2242
		return -nfs4_stat_to_errno(nfserr);
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	return 0;
}

/* Dummy routine */
2247
static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
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{
A
Al Viro 已提交
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	__be32 *p;
2250
	unsigned int strlen;
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	char *str;

	READ_BUF(12);
	return decode_opaque_inline(xdr, &strlen, &str);
}

static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
{
A
Al Viro 已提交
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	uint32_t bmlen;
	__be32 *p;
L
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	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;
}

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static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
L
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{
A
Al Viro 已提交
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	__be32 *p;
L
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	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)
{
A
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	__be32 *p;
L
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	*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)
{
A
Al Viro 已提交
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	__be32 *p;
L
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2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334

	*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)
{
A
Al Viro 已提交
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	__be32 *p;
L
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2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350

	*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)
{
A
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	__be32 *p;
L
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	*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)
{
A
Al Viro 已提交
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	__be32 *p;
L
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	*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;
}

2381
static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
L
Linus Torvalds 已提交
2382
{
A
Al Viro 已提交
2383
	__be32 *p;
L
Linus Torvalds 已提交
2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402

	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)
{
A
Al Viro 已提交
2403
	__be32 *p;
L
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2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418

	*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)
{
A
Al Viro 已提交
2419
	__be32 *p;
L
Linus Torvalds 已提交
2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434

	*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)
{
A
Al Viro 已提交
2435
	__be32 *p;
L
Linus Torvalds 已提交
2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448

	*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;
}

2449 2450
static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
{
A
Al Viro 已提交
2451
	__be32 *p;
2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464

	*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;
}

L
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static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
A
Al Viro 已提交
2467
	__be32 *p;
L
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	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)
{
A
Al Viro 已提交
2484
	__be32 *p;
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Linus Torvalds 已提交
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	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)
{
A
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2501
	__be32 *p;
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2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515
	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;
}

2516 2517 2518
static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
{
	int n;
A
Al Viro 已提交
2519
	__be32 *p;
2520 2521 2522 2523
	int status = 0;

	READ_BUF(4);
	READ32(n);
2524
	if (n < 0)
2525
		goto out_eio;
2526 2527
	if (n == 0)
		goto root_path;
2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547
	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;
2548 2549 2550 2551 2552 2553 2554
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;
2555 2556 2557 2558 2559 2560 2561
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)
2562 2563
{
	int n;
A
Al Viro 已提交
2564
	__be32 *p;
2565 2566 2567 2568 2569 2570 2571
	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;
2572 2573
	dprintk("%s: fsroot ", __FUNCTION__);
	status = decode_pathname(xdr, &res->fs_path);
2574 2575 2576 2577 2578 2579 2580 2581
	if (unlikely(status != 0))
		goto out;
	READ_BUF(4);
	READ32(n);
	if (n <= 0)
		goto out_eio;
	res->nlocations = 0;
	while (res->nlocations < n) {
2582 2583
		int m;
		struct nfs4_fs_location *loc = &res->locations[res->nlocations];
2584

2585 2586 2587
		READ_BUF(4);
		READ32(m);
		if (m <= 0)
2588
			goto out_eio;
2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603

		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 {
				int i;
				dprintk("%s: using first %d of %d servers returned for location %d\n", __FUNCTION__, NFS4_FS_LOCATION_MAXSERVERS, m, res->nlocations);
				for (i = loc->nservers; i < m; i++) {
T
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2604
					unsigned int len;
2605 2606 2607 2608 2609 2610 2611 2612
					char *data;
					status = decode_opaque_inline(xdr, &len, &data);
					if (unlikely(status != 0))
						goto out_eio;
				}
			}
		}
		status = decode_pathname(xdr, &loc->rootpath);
2613 2614
		if (unlikely(status != 0))
			goto out_eio;
2615
		if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
2616 2617 2618 2619 2620 2621 2622 2623 2624 2625
			res->nlocations++;
	}
out:
	dprintk("%s: fs_locations done, error = %d\n", __FUNCTION__, status);
	return status;
out_eio:
	status = -EIO;
	goto out;
}

L
Linus Torvalds 已提交
2626 2627
static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
A
Al Viro 已提交
2628
	__be32 *p;
L
Linus Torvalds 已提交
2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644
	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)
{
A
Al Viro 已提交
2645
	__be32 *p;
L
Linus Torvalds 已提交
2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661
	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)
{
A
Al Viro 已提交
2662
	__be32 *p;
L
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2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678
	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)
{
A
Al Viro 已提交
2679
	__be32 *p;
L
Linus Torvalds 已提交
2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699
	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)
{
A
Al Viro 已提交
2700
	__be32 *p;
L
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2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720
	int status = 0;

	*res = 1024;
	if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
		uint64_t maxwrite;
		READ_BUF(8);
		READ64(maxwrite);
		if (maxwrite > 0x7FFFFFFF)
			maxwrite = 0x7FFFFFFF;
		*res = (uint32_t)maxwrite;
		bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
	}
	dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res);
	return status;
}

static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
{
A
Al Viro 已提交
2721
	__be32 *p;
L
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2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737

	*mode = 0;
	if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
		READ_BUF(4);
		READ32(*mode);
		*mode &= ~S_IFMT;
		bitmap[1] &= ~FATTR4_WORD1_MODE;
	}
	dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode);
	return 0;
}

static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
{
A
Al Viro 已提交
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	__be32 *p;
L
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2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751

	*nlink = 1;
	if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
		READ_BUF(4);
		READ32(*nlink);
		bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
	}
	dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink);
	return 0;
}

T
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static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *uid)
L
Linus Torvalds 已提交
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{
A
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	uint32_t len;
	__be32 *p;
L
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	*uid = -2;
	if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
		READ_BUF(4);
		READ32(len);
		READ_BUF(len);
		if (len < XDR_MAX_NETOBJ) {
			if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
				dprintk("%s: nfs_map_name_to_uid failed!\n",
						__FUNCTION__);
		} else
2769
			dprintk("%s: name too long (%u)!\n",
L
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					__FUNCTION__, len);
		bitmap[1] &= ~FATTR4_WORD1_OWNER;
	}
	dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid);
	return 0;
}

T
Trond Myklebust 已提交
2777
static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *gid)
L
Linus Torvalds 已提交
2778
{
A
Al Viro 已提交
2779 2780
	uint32_t len;
	__be32 *p;
L
Linus Torvalds 已提交
2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793

	*gid = -2;
	if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
		READ_BUF(4);
		READ32(len);
		READ_BUF(len);
		if (len < XDR_MAX_NETOBJ) {
			if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
				dprintk("%s: nfs_map_group_to_gid failed!\n",
						__FUNCTION__);
		} else
2794
			dprintk("%s: name too long (%u)!\n",
L
Linus Torvalds 已提交
2795 2796 2797 2798 2799 2800 2801 2802 2803
					__FUNCTION__, len);
		bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
	}
	dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid);
	return 0;
}

static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
{
A
Al Viro 已提交
2804 2805
	uint32_t major = 0, minor = 0;
	__be32 *p;
L
Linus Torvalds 已提交
2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826

	*rdev = MKDEV(0,0);
	if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
		dev_t tmp;

		READ_BUF(8);
		READ32(major);
		READ32(minor);
		tmp = MKDEV(major, minor);
		if (MAJOR(tmp) == major && MINOR(tmp) == minor)
			*rdev = tmp;
		bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
	}
	dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor);
	return 0;
}

static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
A
Al Viro 已提交
2827
	__be32 *p;
L
Linus Torvalds 已提交
2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843
	int status = 0;

	*res = 0;
	if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
		READ_BUF(8);
		READ64(*res);
		bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
	}
	dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
	return status;
}

static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
A
Al Viro 已提交
2844
	__be32 *p;
L
Linus Torvalds 已提交
2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860
	int status = 0;

	*res = 0;
	if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
		READ_BUF(8);
		READ64(*res);
		bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
	}
	dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
	return status;
}

static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
A
Al Viro 已提交
2861
	__be32 *p;
L
Linus Torvalds 已提交
2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877
	int status = 0;

	*res = 0;
	if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
		READ_BUF(8);
		READ64(*res);
		bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
	}
	dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
	return status;
}

static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
{
A
Al Viro 已提交
2878
	__be32 *p;
L
Linus Torvalds 已提交
2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894

	*used = 0;
	if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
		READ_BUF(8);
		READ64(*used);
		bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
	}
	dprintk("%s: space used=%Lu\n", __FUNCTION__,
			(unsigned long long)*used);
	return 0;
}

static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
{
A
Al Viro 已提交
2895
	__be32 *p;
L
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2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954
	uint64_t sec;
	uint32_t nsec;

	READ_BUF(12);
	READ64(sec);
	READ32(nsec);
	time->tv_sec = (time_t)sec;
	time->tv_nsec = (long)nsec;
	return 0;
}

static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
{
	int status = 0;

	time->tv_sec = 0;
	time->tv_nsec = 0;
	if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
		status = decode_attr_time(xdr, time);
		bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
	}
	dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec);
	return status;
}

static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
{
	int status = 0;

	time->tv_sec = 0;
	time->tv_nsec = 0;
	if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
		status = decode_attr_time(xdr, time);
		bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
	}
	dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec);
	return status;
}

static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
{
	int status = 0;

	time->tv_sec = 0;
	time->tv_nsec = 0;
	if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
		status = decode_attr_time(xdr, time);
		bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
	}
	dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec);
	return status;
}

A
Al Viro 已提交
2955
static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
L
Linus Torvalds 已提交
2956 2957 2958 2959 2960
{
	unsigned int attrwords = XDR_QUADLEN(attrlen);
	unsigned int nwords = xdr->p - savep;

	if (unlikely(attrwords != nwords)) {
2961 2962
		dprintk("%s: server returned incorrect attribute length: "
			"%u %c %u\n",
L
Linus Torvalds 已提交
2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973
				__FUNCTION__,
				attrwords << 2,
				(attrwords < nwords) ? '<' : '>',
				nwords << 2);
		return -EIO;
	}
	return 0;
}

static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
{
A
Al Viro 已提交
2974
	__be32 *p;
L
Linus Torvalds 已提交
2975 2976 2977 2978 2979 2980 2981 2982 2983 2984

	READ_BUF(20);
	READ32(cinfo->atomic);
	READ64(cinfo->before);
	READ64(cinfo->after);
	return 0;
}

static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
{
A
Al Viro 已提交
2985
	__be32 *p;
L
Linus Torvalds 已提交
2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001
	uint32_t supp, acc;
	int status;

	status = decode_op_hdr(xdr, OP_ACCESS);
	if (status)
		return status;
	READ_BUF(8);
	READ32(supp);
	READ32(acc);
	access->supported = supp;
	access->access = acc;
	return 0;
}

static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
{
A
Al Viro 已提交
3002
	__be32 *p;
L
Linus Torvalds 已提交
3003 3004 3005 3006 3007
	int status;

	status = decode_op_hdr(xdr, OP_CLOSE);
	if (status)
		return status;
3008 3009
	READ_BUF(NFS4_STATEID_SIZE);
	COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
L
Linus Torvalds 已提交
3010 3011 3012 3013 3014
	return 0;
}

static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
{
A
Al Viro 已提交
3015
	__be32 *p;
L
Linus Torvalds 已提交
3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027
	int status;

	status = decode_op_hdr(xdr, OP_COMMIT);
	if (status)
		return status;
	READ_BUF(8);
	COPYMEM(res->verf->verifier, 8);
	return 0;
}

static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
{
A
Al Viro 已提交
3028
	__be32 *p;
L
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3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044
	uint32_t bmlen;
	int status;

	status = decode_op_hdr(xdr, OP_CREATE);
	if (status)
		return status;
	if ((status = decode_change_info(xdr, cinfo)))
		return status;
	READ_BUF(4);
	READ32(bmlen);
	READ_BUF(bmlen << 2);
	return 0;
}

static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
{
A
Al Viro 已提交
3045
	__be32 *savep;
L
Linus Torvalds 已提交
3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065
	uint32_t attrlen, 
		 bitmap[2] = {0};
	int status;

	if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
		goto xdr_error;
	if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
		goto xdr_error;
	if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
		goto xdr_error;
	if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
		goto xdr_error;
	if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
		goto xdr_error;
	if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
		goto xdr_error;
	if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
		goto xdr_error;
	status = verify_attr_len(xdr, savep, attrlen);
xdr_error:
3066
	dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
L
Linus Torvalds 已提交
3067 3068 3069 3070 3071
	return status;
}
	
static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
{
A
Al Viro 已提交
3072
	__be32 *savep;
L
Linus Torvalds 已提交
3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098
	uint32_t attrlen, 
		 bitmap[2] = {0};
	int status;
	
	if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
		goto xdr_error;
	if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
		goto xdr_error;
	if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
		goto xdr_error;

	if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
		goto xdr_error;
	if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
		goto xdr_error;
	if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
		goto xdr_error;
	if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
		goto xdr_error;
	if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
		goto xdr_error;
	if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
		goto xdr_error;

	status = verify_attr_len(xdr, savep, attrlen);
xdr_error:
3099
	dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
L
Linus Torvalds 已提交
3100 3101 3102 3103 3104
	return status;
}

static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
{
A
Al Viro 已提交
3105
	__be32 *savep;
L
Linus Torvalds 已提交
3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123
	uint32_t attrlen, 
		 bitmap[2] = {0};
	int status;
	
	if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
		goto xdr_error;
	if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
		goto xdr_error;
	if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
		goto xdr_error;

	if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
		goto xdr_error;
	if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
		goto xdr_error;

	status = verify_attr_len(xdr, savep, attrlen);
xdr_error:
3124
	dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
L
Linus Torvalds 已提交
3125 3126 3127 3128 3129
	return status;
}

static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
{
A
Al Viro 已提交
3130
	__be32 *savep;
L
Linus Torvalds 已提交
3131 3132 3133 3134
	uint32_t attrlen,
		 bitmap[2] = {0},
		 type;
	int status, fmode = 0;
3135
	uint64_t fileid;
L
Linus Torvalds 已提交
3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157

	if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
		goto xdr_error;
	if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
		goto xdr_error;

	fattr->bitmap[0] = bitmap[0];
	fattr->bitmap[1] = bitmap[1];

	if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
		goto xdr_error;


	if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
		goto xdr_error;
	fattr->type = nfs_type2fmt[type].nfs2type;
	fmode = nfs_type2fmt[type].mode;

	if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
		goto xdr_error;
	if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
		goto xdr_error;
3158
	if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid)) != 0)
L
Linus Torvalds 已提交
3159 3160 3161
		goto xdr_error;
	if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
		goto xdr_error;
3162
	if ((status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
3163
						struct nfs4_fs_locations,
3164 3165
						fattr))) != 0)
		goto xdr_error;
L
Linus Torvalds 已提交
3166 3167 3168 3169 3170
	if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
		goto xdr_error;
	fattr->mode |= fmode;
	if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
		goto xdr_error;
3171
	if ((status = decode_attr_owner(xdr, bitmap, server->nfs_client, &fattr->uid)) != 0)
L
Linus Torvalds 已提交
3172
		goto xdr_error;
3173
	if ((status = decode_attr_group(xdr, bitmap, server->nfs_client, &fattr->gid)) != 0)
L
Linus Torvalds 已提交
3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184
		goto xdr_error;
	if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
		goto xdr_error;
	if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
		goto xdr_error;
	if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
		goto xdr_error;
	if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
		goto xdr_error;
	if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
		goto xdr_error;
3185 3186 3187 3188
	if ((status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid)) != 0)
		goto xdr_error;
	if (fattr->fileid == 0 && fileid != 0)
		fattr->fileid = fileid;
3189
	if ((status = verify_attr_len(xdr, savep, attrlen)) == 0)
L
Linus Torvalds 已提交
3190 3191
		fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
xdr_error:
3192
	dprintk("%s: xdr returned %d\n", __FUNCTION__, -status);
L
Linus Torvalds 已提交
3193 3194 3195 3196 3197 3198
	return status;
}


static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
{
A
Al Viro 已提交
3199
	__be32 *savep;
L
Linus Torvalds 已提交
3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224
	uint32_t attrlen, bitmap[2];
	int status;

	if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
		goto xdr_error;
	if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
		goto xdr_error;
	if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
		goto xdr_error;

	fsinfo->rtmult = fsinfo->wtmult = 512;	/* ??? */

	if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
		goto xdr_error;
	if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
		goto xdr_error;
	if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
		goto xdr_error;
	fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
	if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
		goto xdr_error;
	fsinfo->wtpref = fsinfo->wtmax;

	status = verify_attr_len(xdr, savep, attrlen);
xdr_error:
3225
	dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
L
Linus Torvalds 已提交
3226 3227 3228 3229 3230
	return status;
}

static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
{
A
Al Viro 已提交
3231
	__be32 *p;
L
Linus Torvalds 已提交
3232 3233 3234
	uint32_t len;
	int status;

3235 3236 3237
	/* Zero handle first to allow comparisons */
	memset(fh, 0, sizeof(*fh));

L
Linus Torvalds 已提交
3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264
	status = decode_op_hdr(xdr, OP_GETFH);
	if (status)
		return status;

	READ_BUF(4);
	READ32(len);
	if (len > NFS4_FHSIZE)
		return -EIO;
	fh->size = len;
	READ_BUF(len);
	COPYMEM(fh->data, len);
	return 0;
}

static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
{
	int status;
	
	status = decode_op_hdr(xdr, OP_LINK);
	if (status)
		return status;
	return decode_change_info(xdr, cinfo);
}

/*
 * We create the owner, so we know a proper owner.id length is 4.
 */
T
Trond Myklebust 已提交
3265
static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
L
Linus Torvalds 已提交
3266
{
T
Trond Myklebust 已提交
3267
	uint64_t offset, length, clientid;
A
Al Viro 已提交
3268
	__be32 *p;
T
Trond Myklebust 已提交
3269
	uint32_t namelen, type;
L
Linus Torvalds 已提交
3270 3271

	READ_BUF(32);
T
Trond Myklebust 已提交
3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285
	READ64(offset);
	READ64(length);
	READ32(type);
	if (fl != NULL) {
		fl->fl_start = (loff_t)offset;
		fl->fl_end = fl->fl_start + (loff_t)length - 1;
		if (length == ~(uint64_t)0)
			fl->fl_end = OFFSET_MAX;
		fl->fl_type = F_WRLCK;
		if (type & 1)
			fl->fl_type = F_RDLCK;
		fl->fl_pid = 0;
	}
	READ64(clientid);
L
Linus Torvalds 已提交
3286 3287 3288 3289 3290
	READ32(namelen);
	READ_BUF(namelen);
	return -NFS4ERR_DENIED;
}

T
Trond Myklebust 已提交
3291
static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
L
Linus Torvalds 已提交
3292
{
A
Al Viro 已提交
3293
	__be32 *p;
L
Linus Torvalds 已提交
3294 3295 3296 3297
	int status;

	status = decode_op_hdr(xdr, OP_LOCK);
	if (status == 0) {
3298 3299
		READ_BUF(NFS4_STATEID_SIZE);
		COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
L
Linus Torvalds 已提交
3300
	} else if (status == -NFS4ERR_DENIED)
T
Trond Myklebust 已提交
3301
		return decode_lock_denied(xdr, NULL);
L
Linus Torvalds 已提交
3302 3303 3304
	return status;
}

T
Trond Myklebust 已提交
3305
static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
L
Linus Torvalds 已提交
3306 3307 3308 3309
{
	int status;
	status = decode_op_hdr(xdr, OP_LOCKT);
	if (status == -NFS4ERR_DENIED)
T
Trond Myklebust 已提交
3310
		return decode_lock_denied(xdr, res->denied);
L
Linus Torvalds 已提交
3311 3312 3313
	return status;
}

T
Trond Myklebust 已提交
3314
static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
L
Linus Torvalds 已提交
3315
{
A
Al Viro 已提交
3316
	__be32 *p;
L
Linus Torvalds 已提交
3317 3318 3319 3320
	int status;

	status = decode_op_hdr(xdr, OP_LOCKU);
	if (status == 0) {
3321 3322
		READ_BUF(NFS4_STATEID_SIZE);
		COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
L
Linus Torvalds 已提交
3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334
	}
	return status;
}

static int decode_lookup(struct xdr_stream *xdr)
{
	return decode_op_hdr(xdr, OP_LOOKUP);
}

/* This is too sick! */
static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
{
A
Al Viro 已提交
3335
        __be32 *p;
L
Linus Torvalds 已提交
3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353
	uint32_t limit_type, nblocks, blocksize;

	READ_BUF(12);
	READ32(limit_type);
	switch (limit_type) {
		case 1:
			READ64(*maxsize);
			break;
		case 2:
			READ32(nblocks);
			READ32(blocksize);
			*maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
	}
	return 0;
}

static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
{
A
Al Viro 已提交
3354
        __be32 *p;
L
Linus Torvalds 已提交
3355 3356 3357 3358 3359 3360 3361 3362
        uint32_t delegation_type;

	READ_BUF(4);
	READ32(delegation_type);
	if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
		res->delegation_type = 0;
		return 0;
	}
3363 3364
	READ_BUF(NFS4_STATEID_SIZE+4);
	COPYMEM(res->delegation.data, NFS4_STATEID_SIZE);
L
Linus Torvalds 已提交
3365 3366 3367 3368 3369 3370 3371 3372 3373 3374
	READ32(res->do_recall);
	switch (delegation_type) {
		case NFS4_OPEN_DELEGATE_READ:
			res->delegation_type = FMODE_READ;
			break;
		case NFS4_OPEN_DELEGATE_WRITE:
			res->delegation_type = FMODE_WRITE|FMODE_READ;
			if (decode_space_limit(xdr, &res->maxsize) < 0)
				return -EIO;
	}
3375
	return decode_ace(xdr, NULL, res->server->nfs_client);
L
Linus Torvalds 已提交
3376 3377 3378 3379
}

static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
{
A
Al Viro 已提交
3380
        __be32 *p;
3381
	uint32_t savewords, bmlen, i;
L
Linus Torvalds 已提交
3382 3383 3384 3385 3386
        int status;

        status = decode_op_hdr(xdr, OP_OPEN);
        if (status)
                return status;
3387 3388
        READ_BUF(NFS4_STATEID_SIZE);
        COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
L
Linus Torvalds 已提交
3389 3390 3391 3392 3393 3394 3395 3396 3397 3398

        decode_change_info(xdr, &res->cinfo);

        READ_BUF(8);
        READ32(res->rflags);
        READ32(bmlen);
        if (bmlen > 10)
                goto xdr_error;

        READ_BUF(bmlen << 2);
3399 3400 3401 3402 3403 3404
	savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
	for (i = 0; i < savewords; ++i)
		READ32(res->attrset[i]);
	for (; i < NFS4_BITMAP_SIZE; i++)
		res->attrset[i] = 0;

L
Linus Torvalds 已提交
3405 3406
	return decode_delegation(xdr, res);
xdr_error:
3407
	dprintk("%s: Bitmap too large! Length = %u\n", __FUNCTION__, bmlen);
L
Linus Torvalds 已提交
3408 3409 3410 3411 3412
	return -EIO;
}

static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
{
A
Al Viro 已提交
3413
        __be32 *p;
L
Linus Torvalds 已提交
3414 3415 3416 3417 3418
	int status;

        status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
        if (status)
                return status;
3419 3420
        READ_BUF(NFS4_STATEID_SIZE);
        COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
L
Linus Torvalds 已提交
3421 3422 3423 3424 3425
        return 0;
}

static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
{
A
Al Viro 已提交
3426
	__be32 *p;
L
Linus Torvalds 已提交
3427 3428 3429 3430 3431
	int status;

	status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
	if (status)
		return status;
3432 3433
	READ_BUF(NFS4_STATEID_SIZE);
	COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
L
Linus Torvalds 已提交
3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449
	return 0;
}

static int decode_putfh(struct xdr_stream *xdr)
{
	return decode_op_hdr(xdr, OP_PUTFH);
}

static int decode_putrootfh(struct xdr_stream *xdr)
{
	return decode_op_hdr(xdr, OP_PUTROOTFH);
}

static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
{
	struct kvec *iov = req->rq_rcv_buf.head;
A
Al Viro 已提交
3450
	__be32 *p;
L
Linus Torvalds 已提交
3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462
	uint32_t count, eof, recvd, hdrlen;
	int status;

	status = decode_op_hdr(xdr, OP_READ);
	if (status)
		return status;
	READ_BUF(8);
	READ32(eof);
	READ32(count);
	hdrlen = (u8 *) p - (u8 *) iov->iov_base;
	recvd = req->rq_rcv_buf.len - hdrlen;
	if (count > recvd) {
3463
		dprintk("NFS: server cheating in read reply: "
L
Linus Torvalds 已提交
3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479
				"count %u > recvd %u\n", count, recvd);
		count = recvd;
		eof = 0;
	}
	xdr_read_pages(xdr, count);
	res->eof = eof;
	res->count = count;
	return 0;
}

static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
{
	struct xdr_buf	*rcvbuf = &req->rq_rcv_buf;
	struct page	*page = *rcvbuf->pages;
	struct kvec	*iov = rcvbuf->head;
	unsigned int	nr, pglen = rcvbuf->page_len;
A
Al Viro 已提交
3480
	__be32		*end, *entry, *p, *kaddr;
3481
	uint32_t	len, attrlen, xlen;
L
Linus Torvalds 已提交
3482 3483 3484 3485 3486 3487 3488
	int 		hdrlen, recvd, status;

	status = decode_op_hdr(xdr, OP_READDIR);
	if (status)
		return status;
	READ_BUF(8);
	COPYMEM(readdir->verifier.data, 8);
3489 3490 3491 3492 3493
	dprintk("%s: verifier = 0x%x%x\n",
			__FUNCTION__,
			((u32 *)readdir->verifier.data)[0],
			((u32 *)readdir->verifier.data)[1]);

L
Linus Torvalds 已提交
3494 3495 3496 3497 3498 3499 3500 3501

	hdrlen = (char *) p - (char *) iov->iov_base;
	recvd = rcvbuf->len - hdrlen;
	if (pglen > recvd)
		pglen = recvd;
	xdr_read_pages(xdr, pglen);

	BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
A
Al Viro 已提交
3502
	kaddr = p = kmap_atomic(page, KM_USER0);
3503
	end = p + ((pglen + readdir->pgbase) >> 2);
L
Linus Torvalds 已提交
3504 3505
	entry = p;
	for (nr = 0; *p++; nr++) {
3506
		if (end - p < 3)
L
Linus Torvalds 已提交
3507
			goto short_pkt;
3508
		dprintk("cookie = %Lu, ", *((unsigned long long *)p));
L
Linus Torvalds 已提交
3509 3510 3511
		p += 2;			/* cookie */
		len = ntohl(*p++);	/* filename length */
		if (len > NFS4_MAXNAMLEN) {
3512 3513
			dprintk("NFS: giant filename in readdir (len 0x%x)\n",
					len);
L
Linus Torvalds 已提交
3514 3515
			goto err_unmap;
		}
3516 3517
		xlen = XDR_QUADLEN(len);
		if (end - p < xlen + 1)
L
Linus Torvalds 已提交
3518
			goto short_pkt;
3519 3520
		dprintk("filename = %*s\n", len, (char *)p);
		p += xlen;
L
Linus Torvalds 已提交
3521
		len = ntohl(*p++);	/* bitmap length */
3522
		if (end - p < len + 1)
L
Linus Torvalds 已提交
3523
			goto short_pkt;
3524
		p += len;
L
Linus Torvalds 已提交
3525
		attrlen = XDR_QUADLEN(ntohl(*p++));
3526
		if (end - p < attrlen + 2)
L
Linus Torvalds 已提交
3527
			goto short_pkt;
3528
		p += attrlen;		/* attributes */
L
Linus Torvalds 已提交
3529 3530 3531 3532 3533 3534 3535 3536
		entry = p;
	}
	if (!nr && (entry[0] != 0 || entry[1] == 0))
		goto short_pkt;
out:	
	kunmap_atomic(kaddr, KM_USER0);
	return 0;
short_pkt:
3537
	dprintk("%s: short packet at entry %d\n", __FUNCTION__, nr);
L
Linus Torvalds 已提交
3538 3539 3540
	entry[0] = entry[1] = 0;
	/* truncate listing ? */
	if (!nr) {
3541
		dprintk("NFS: readdir reply truncated!\n");
L
Linus Torvalds 已提交
3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554
		entry[1] = 1;
	}
	goto out;
err_unmap:
	kunmap_atomic(kaddr, KM_USER0);
	return -errno_NFSERR_IO;
}

static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
{
	struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
	struct kvec *iov = rcvbuf->head;
	int hdrlen, len, recvd;
A
Al Viro 已提交
3555
	__be32 *p;
L
Linus Torvalds 已提交
3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566
	char *kaddr;
	int status;

	status = decode_op_hdr(xdr, OP_READLINK);
	if (status)
		return status;

	/* Convert length of symlink */
	READ_BUF(4);
	READ32(len);
	if (len >= rcvbuf->page_len || len <= 0) {
3567
		dprintk("nfs: server returned giant symlink!\n");
L
Linus Torvalds 已提交
3568 3569 3570 3571 3572
		return -ENAMETOOLONG;
	}
	hdrlen = (char *) xdr->p - (char *) iov->iov_base;
	recvd = req->rq_rcv_buf.len - hdrlen;
	if (recvd < len) {
3573
		dprintk("NFS: server cheating in readlink reply: "
L
Linus Torvalds 已提交
3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622
				"count %u > recvd %u\n", len, recvd);
		return -EIO;
	}
	xdr_read_pages(xdr, len);
	/*
	 * The XDR encode routine has set things up so that
	 * the link text will be copied directly into the
	 * buffer.  We just have to do overflow-checking,
	 * and and null-terminate the text (the VFS expects
	 * null-termination).
	 */
	kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
	kaddr[len+rcvbuf->page_base] = '\0';
	kunmap_atomic(kaddr, KM_USER0);
	return 0;
}

static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
{
	int status;

	status = decode_op_hdr(xdr, OP_REMOVE);
	if (status)
		goto out;
	status = decode_change_info(xdr, cinfo);
out:
	return status;
}

static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
	      struct nfs4_change_info *new_cinfo)
{
	int status;

	status = decode_op_hdr(xdr, OP_RENAME);
	if (status)
		goto out;
	if ((status = decode_change_info(xdr, old_cinfo)))
		goto out;
	status = decode_change_info(xdr, new_cinfo);
out:
	return status;
}

static int decode_renew(struct xdr_stream *xdr)
{
	return decode_op_hdr(xdr, OP_RENEW);
}

3623 3624 3625 3626 3627 3628
static int
decode_restorefh(struct xdr_stream *xdr)
{
	return decode_op_hdr(xdr, OP_RESTOREFH);
}

3629 3630 3631
static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
		size_t *acl_len)
{
A
Al Viro 已提交
3632
	__be32 *savep;
3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655
	uint32_t attrlen,
		 bitmap[2] = {0};
	struct kvec *iov = req->rq_rcv_buf.head;
	int status;

	*acl_len = 0;
	if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
		goto out;
	if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
		goto out;
	if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
		goto out;

	if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
		int hdrlen, recvd;

		/* We ignore &savep and don't do consistency checks on
		 * the attr length.  Let userspace figure it out.... */
		hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
		recvd = req->rq_rcv_buf.len - hdrlen;
		if (attrlen > recvd) {
3656
			dprintk("NFS: server cheating in getattr"
3657 3658 3659 3660
					" acl reply: attrlen %u > recvd %u\n",
					attrlen, recvd);
			return -EINVAL;
		}
3661
		xdr_read_pages(xdr, attrlen);
3662
		*acl_len = attrlen;
J
J. Bruce Fields 已提交
3663 3664
	} else
		status = -EOPNOTSUPP;
3665 3666 3667 3668 3669

out:
	return status;
}

L
Linus Torvalds 已提交
3670 3671 3672 3673 3674 3675 3676 3677
static int
decode_savefh(struct xdr_stream *xdr)
{
	return decode_op_hdr(xdr, OP_SAVEFH);
}

static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
{
A
Al Viro 已提交
3678
	__be32 *p;
L
Linus Torvalds 已提交
3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691
	uint32_t bmlen;
	int status;

        
	status = decode_op_hdr(xdr, OP_SETATTR);
	if (status)
		return status;
	READ_BUF(4);
	READ32(bmlen);
	READ_BUF(bmlen << 2);
	return 0;
}

3692
static int decode_setclientid(struct xdr_stream *xdr, struct nfs_client *clp)
L
Linus Torvalds 已提交
3693
{
A
Al Viro 已提交
3694
	__be32 *p;
L
Linus Torvalds 已提交
3695 3696 3697 3698 3699 3700
	uint32_t opnum;
	int32_t nfserr;

	READ_BUF(8);
	READ32(opnum);
	if (opnum != OP_SETCLIENTID) {
3701
		dprintk("nfs: decode_setclientid: Server returned operation"
L
Linus Torvalds 已提交
3702 3703 3704 3705 3706
			       	" %d\n", opnum);
		return -EIO;
	}
	READ32(nfserr);
	if (nfserr == NFS_OK) {
3707
		READ_BUF(8 + NFS4_VERIFIER_SIZE);
L
Linus Torvalds 已提交
3708
		READ64(clp->cl_clientid);
3709
		COPYMEM(clp->cl_confirm.data, NFS4_VERIFIER_SIZE);
L
Linus Torvalds 已提交
3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723
	} else if (nfserr == NFSERR_CLID_INUSE) {
		uint32_t len;

		/* skip netid string */
		READ_BUF(4);
		READ32(len);
		READ_BUF(len);

		/* skip uaddr string */
		READ_BUF(4);
		READ32(len);
		READ_BUF(len);
		return -NFSERR_CLID_INUSE;
	} else
3724
		return -nfs4_stat_to_errno(nfserr);
L
Linus Torvalds 已提交
3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735

	return 0;
}

static int decode_setclientid_confirm(struct xdr_stream *xdr)
{
	return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
}

static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
{
A
Al Viro 已提交
3736
	__be32 *p;
L
Linus Torvalds 已提交
3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757
	int status;

	status = decode_op_hdr(xdr, OP_WRITE);
	if (status)
		return status;

	READ_BUF(16);
	READ32(res->count);
	READ32(res->verf->committed);
	COPYMEM(res->verf->verifier, 8);
	return 0;
}

static int decode_delegreturn(struct xdr_stream *xdr)
{
	return decode_op_hdr(xdr, OP_DELEGRETURN);
}

/*
 * Decode OPEN_DOWNGRADE response
 */
A
Al Viro 已提交
3758
static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
L
Linus Torvalds 已提交
3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771
{
        struct xdr_stream xdr;
        struct compound_hdr hdr;
        int status;

        xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
        status = decode_compound_hdr(&xdr, &hdr);
        if (status)
                goto out;
        status = decode_putfh(&xdr);
        if (status)
                goto out;
        status = decode_open_downgrade(&xdr, res);
3772 3773 3774
	if (status != 0)
		goto out;
	decode_getfattr(&xdr, res->fattr, res->server);
L
Linus Torvalds 已提交
3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785
out:
        return status;
}

/*
 * END OF "GENERIC" DECODE ROUTINES.
 */

/*
 * Decode ACCESS response
 */
A
Al Viro 已提交
3786
static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
L
Linus Torvalds 已提交
3787 3788 3789 3790 3791 3792 3793 3794
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;
	
	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
		goto out;
3795 3796 3797 3798 3799 3800 3801
	status = decode_putfh(&xdr);
	if (status != 0)
		goto out;
	status = decode_access(&xdr, res);
	if (status != 0)
		goto out;
	decode_getfattr(&xdr, res->fattr, res->server);
L
Linus Torvalds 已提交
3802 3803 3804 3805 3806 3807 3808
out:
	return status;
}

/*
 * Decode LOOKUP response
 */
A
Al Viro 已提交
3809
static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
L
Linus Torvalds 已提交
3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;
	
	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
		goto out;
	if ((status = decode_putfh(&xdr)) != 0)
		goto out;
	if ((status = decode_lookup(&xdr)) != 0)
		goto out;
	if ((status = decode_getfh(&xdr, res->fh)) != 0)
		goto out;
	status = decode_getfattr(&xdr, res->fattr, res->server);
out:
	return status;
}

/*
 * Decode LOOKUP_ROOT response
 */
A
Al Viro 已提交
3832
static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
L
Linus Torvalds 已提交
3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;
	
	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
		goto out;
	if ((status = decode_putrootfh(&xdr)) != 0)
		goto out;
	if ((status = decode_getfh(&xdr, res->fh)) == 0)
		status = decode_getfattr(&xdr, res->fattr, res->server);
out:
	return status;
}

/*
 * Decode REMOVE response
 */
3852
static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_removeres *res)
L
Linus Torvalds 已提交
3853 3854 3855 3856 3857 3858 3859 3860
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;
	
	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
		goto out;
3861 3862 3863 3864
	if ((status = decode_putfh(&xdr)) != 0)
		goto out;
	if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
		goto out;
3865
	decode_getfattr(&xdr, &res->dir_attr, res->server);
L
Linus Torvalds 已提交
3866 3867 3868 3869 3870 3871 3872
out:
	return status;
}

/*
 * Decode RENAME response
 */
A
Al Viro 已提交
3873
static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_rename_res *res)
L
Linus Torvalds 已提交
3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;
	
	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
		goto out;
	if ((status = decode_putfh(&xdr)) != 0)
		goto out;
	if ((status = decode_savefh(&xdr)) != 0)
		goto out;
	if ((status = decode_putfh(&xdr)) != 0)
		goto out;
3888 3889 3890 3891 3892 3893 3894 3895
	if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
		goto out;
	/* Current FH is target directory */
	if (decode_getfattr(&xdr, res->new_fattr, res->server) != 0)
		goto out;
	if ((status = decode_restorefh(&xdr)) != 0)
		goto out;
	decode_getfattr(&xdr, res->old_fattr, res->server);
L
Linus Torvalds 已提交
3896 3897 3898 3899 3900 3901 3902
out:
	return status;
}

/*
 * Decode LINK response
 */
A
Al Viro 已提交
3903
static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
L
Linus Torvalds 已提交
3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;
	
	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
		goto out;
	if ((status = decode_putfh(&xdr)) != 0)
		goto out;
	if ((status = decode_savefh(&xdr)) != 0)
		goto out;
	if ((status = decode_putfh(&xdr)) != 0)
		goto out;
3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928
	if ((status = decode_link(&xdr, &res->cinfo)) != 0)
		goto out;
	/*
	 * Note order: OP_LINK leaves the directory as the current
	 *             filehandle.
	 */
	if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
		goto out;
	if ((status = decode_restorefh(&xdr)) != 0)
		goto out;
	decode_getfattr(&xdr, res->fattr, res->server);
L
Linus Torvalds 已提交
3929 3930 3931 3932 3933 3934 3935
out:
	return status;
}

/*
 * Decode CREATE response
 */
A
Al Viro 已提交
3936
static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
L
Linus Torvalds 已提交
3937 3938 3939 3940 3941 3942 3943 3944 3945 3946
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;
	
	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
		goto out;
	if ((status = decode_putfh(&xdr)) != 0)
		goto out;
3947 3948
	if ((status = decode_savefh(&xdr)) != 0)
		goto out;
L
Linus Torvalds 已提交
3949 3950 3951 3952
	if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
		goto out;
	if ((status = decode_getfh(&xdr, res->fh)) != 0)
		goto out;
3953 3954 3955 3956 3957
	if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
		goto out;
	if ((status = decode_restorefh(&xdr)) != 0)
		goto out;
	decode_getfattr(&xdr, res->dir_fattr, res->server);
L
Linus Torvalds 已提交
3958 3959 3960 3961 3962 3963 3964
out:
	return status;
}

/*
 * Decode SYMLINK response
 */
A
Al Viro 已提交
3965
static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
L
Linus Torvalds 已提交
3966 3967 3968 3969 3970 3971 3972
{
	return nfs4_xdr_dec_create(rqstp, p, res);
}

/*
 * Decode GETATTR response
 */
A
Al Viro 已提交
3973
static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
L
Linus Torvalds 已提交
3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;
	
	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
	if (status)
		goto out;
	status = decode_putfh(&xdr);
	if (status)
		goto out;
	status = decode_getfattr(&xdr, res->fattr, res->server);
out:
	return status;

}

3992 3993 3994 3995
/*
 * Encode an SETACL request
 */
static int
A
Al Viro 已提交
3996
nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016
{
        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_setacl(&xdr, args);
out:
        return status;
}
/*
 * Decode SETACL response
 */
static int
A
Al Viro 已提交
4017
nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p, void *res)
4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
	if (status)
		goto out;
	status = decode_putfh(&xdr);
	if (status)
		goto out;
	status = decode_setattr(&xdr, res);
out:
	return status;
}
L
Linus Torvalds 已提交
4034

4035 4036 4037 4038
/*
 * Decode GETACL response
 */
static int
A
Al Viro 已提交
4039
nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p, size_t *acl_len)
4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
	if (status)
		goto out;
	status = decode_putfh(&xdr);
	if (status)
		goto out;
	status = decode_getacl(&xdr, rqstp, acl_len);

out:
	return status;
}

L
Linus Torvalds 已提交
4058 4059 4060
/*
 * Decode CLOSE response
 */
A
Al Viro 已提交
4061
static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
L
Linus Torvalds 已提交
4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074
{
        struct xdr_stream xdr;
        struct compound_hdr hdr;
        int status;

        xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
        status = decode_compound_hdr(&xdr, &hdr);
        if (status)
                goto out;
        status = decode_putfh(&xdr);
        if (status)
                goto out;
        status = decode_close(&xdr, res);
4075 4076 4077 4078 4079 4080 4081 4082 4083
	if (status != 0)
		goto out;
	/*
	 * Note: Server may do delete on close for this file
	 * 	in which case the getattr call will fail with
	 * 	an ESTALE error. Shouldn't be a problem,
	 * 	though, since fattr->valid will remain unset.
	 */
	decode_getfattr(&xdr, res->fattr, res->server);
L
Linus Torvalds 已提交
4084 4085 4086 4087 4088 4089 4090
out:
        return status;
}

/*
 * Decode OPEN response
 */
A
Al Viro 已提交
4091
static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
L
Linus Torvalds 已提交
4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103
{
        struct xdr_stream xdr;
        struct compound_hdr hdr;
        int status;

        xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
        status = decode_compound_hdr(&xdr, &hdr);
        if (status)
                goto out;
        status = decode_putfh(&xdr);
        if (status)
                goto out;
4104 4105 4106
        status = decode_savefh(&xdr);
	if (status)
		goto out;
L
Linus Torvalds 已提交
4107 4108 4109
        status = decode_open(&xdr, res);
        if (status)
                goto out;
4110
	if (decode_getfh(&xdr, &res->fh) != 0)
L
Linus Torvalds 已提交
4111
		goto out;
4112 4113
	if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
		goto out;
4114
	if (decode_restorefh(&xdr) != 0)
4115 4116
		goto out;
	decode_getfattr(&xdr, res->dir_attr, res->server);
L
Linus Torvalds 已提交
4117 4118 4119 4120 4121 4122 4123
out:
        return status;
}

/*
 * Decode OPEN_CONFIRM response
 */
A
Al Viro 已提交
4124
static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res)
L
Linus Torvalds 已提交
4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144
{
        struct xdr_stream xdr;
        struct compound_hdr hdr;
        int status;

        xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
        status = decode_compound_hdr(&xdr, &hdr);
        if (status)
                goto out;
        status = decode_putfh(&xdr);
        if (status)
                goto out;
        status = decode_open_confirm(&xdr, res);
out:
        return status;
}

/*
 * Decode OPEN response
 */
A
Al Viro 已提交
4145
static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
L
Linus Torvalds 已提交
4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158
{
        struct xdr_stream xdr;
        struct compound_hdr hdr;
        int status;

        xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
        status = decode_compound_hdr(&xdr, &hdr);
        if (status)
                goto out;
        status = decode_putfh(&xdr);
        if (status)
                goto out;
        status = decode_open(&xdr, res);
4159 4160 4161
        if (status)
                goto out;
	decode_getfattr(&xdr, res->f_attr, res->server);
L
Linus Torvalds 已提交
4162 4163 4164 4165 4166 4167 4168
out:
        return status;
}

/*
 * Decode SETATTR response
 */
A
Al Viro 已提交
4169
static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
L
Linus Torvalds 已提交
4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194
{
        struct xdr_stream xdr;
        struct compound_hdr hdr;
        int status;

        xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
        status = decode_compound_hdr(&xdr, &hdr);
        if (status)
                goto out;
        status = decode_putfh(&xdr);
        if (status)
                goto out;
        status = decode_setattr(&xdr, res);
        if (status)
                goto out;
	status = decode_getfattr(&xdr, res->fattr, res->server);
	if (status == NFS4ERR_DELAY)
		status = 0;
out:
        return status;
}

/*
 * Decode LOCK response
 */
A
Al Viro 已提交
4195
static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
L
Linus Torvalds 已提交
4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
	if (status)
		goto out;
	status = decode_putfh(&xdr);
	if (status)
		goto out;
	status = decode_lock(&xdr, res);
out:
	return status;
}

/*
 * Decode LOCKT response
 */
A
Al Viro 已提交
4216
static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res)
L
Linus Torvalds 已提交
4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
	if (status)
		goto out;
	status = decode_putfh(&xdr);
	if (status)
		goto out;
	status = decode_lockt(&xdr, res);
out:
	return status;
}

/*
 * Decode LOCKU response
 */
A
Al Viro 已提交
4237
static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res)
L
Linus Torvalds 已提交
4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
	if (status)
		goto out;
	status = decode_putfh(&xdr);
	if (status)
		goto out;
	status = decode_locku(&xdr, res);
out:
	return status;
}

/*
 * Decode READLINK response
 */
A
Al Viro 已提交
4258
static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p, void *res)
L
Linus Torvalds 已提交
4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
	if (status)
		goto out;
	status = decode_putfh(&xdr);
	if (status)
		goto out;
	status = decode_readlink(&xdr, rqstp);
out:
	return status;
}

/*
 * Decode READDIR response
 */
A
Al Viro 已提交
4279
static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res)
L
Linus Torvalds 已提交
4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
	if (status)
		goto out;
	status = decode_putfh(&xdr);
	if (status)
		goto out;
	status = decode_readdir(&xdr, rqstp, res);
out:
	return status;
}

/*
 * Decode Read response
 */
A
Al Viro 已提交
4300
static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res)
L
Linus Torvalds 已提交
4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
	if (status)
		goto out;
	status = decode_putfh(&xdr);
	if (status)
		goto out;
	status = decode_read(&xdr, rqstp, res);
	if (!status)
		status = res->count;
out:
	return status;
}

/*
 * Decode WRITE response
 */
A
Al Viro 已提交
4323
static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
L
Linus Torvalds 已提交
4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
	if (status)
		goto out;
	status = decode_putfh(&xdr);
	if (status)
		goto out;
	status = decode_write(&xdr, res);
4337 4338 4339
	if (status)
		goto out;
	decode_getfattr(&xdr, res->fattr, res->server);
L
Linus Torvalds 已提交
4340 4341 4342 4343 4344 4345 4346 4347 4348
	if (!status)
		status = res->count;
out:
	return status;
}

/*
 * Decode COMMIT response
 */
A
Al Viro 已提交
4349
static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
L
Linus Torvalds 已提交
4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
	if (status)
		goto out;
	status = decode_putfh(&xdr);
	if (status)
		goto out;
	status = decode_commit(&xdr, res);
4363 4364 4365
	if (status)
		goto out;
	decode_getfattr(&xdr, res->fattr, res->server);
L
Linus Torvalds 已提交
4366 4367 4368 4369 4370 4371 4372
out:
	return status;
}

/*
 * FSINFO request
 */
A
Al Viro 已提交
4373
static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
L
Linus Torvalds 已提交
4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
	if (!status)
		status = decode_putfh(&xdr);
	if (!status)
		status = decode_fsinfo(&xdr, fsinfo);
	if (!status)
4386
		status = -nfs4_stat_to_errno(hdr.status);
L
Linus Torvalds 已提交
4387 4388 4389 4390 4391 4392
	return status;
}

/*
 * PATHCONF request
 */
A
Al Viro 已提交
4393
static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *pathconf)
L
Linus Torvalds 已提交
4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
	if (!status)
		status = decode_putfh(&xdr);
	if (!status)
		status = decode_pathconf(&xdr, pathconf);
	return status;
}

/*
 * STATFS request
 */
A
Al Viro 已提交
4411
static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *fsstat)
L
Linus Torvalds 已提交
4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
	if (!status)
		status = decode_putfh(&xdr);
	if (!status)
		status = decode_statfs(&xdr, fsstat);
	return status;
}

/*
 * GETATTR_BITMAP request
 */
A
Al Viro 已提交
4429
static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
L
Linus Torvalds 已提交
4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
	if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
		goto out;
	if ((status = decode_putfh(&xdr)) != 0)
		goto out;
	status = decode_server_caps(&xdr, res);
out:
	return status;
}

/*
 * Decode RENEW response
 */
A
Al Viro 已提交
4448
static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
L
Linus Torvalds 已提交
4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
	if (!status)
		status = decode_renew(&xdr);
	return status;
}

/*
 * a SETCLIENTID request
 */
A
Al Viro 已提交
4464
static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
4465
		struct nfs_client *clp)
L
Linus Torvalds 已提交
4466 4467 4468 4469 4470 4471 4472 4473 4474 4475
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
	if (!status)
		status = decode_setclientid(&xdr, clp);
	if (!status)
4476
		status = -nfs4_stat_to_errno(hdr.status);
L
Linus Torvalds 已提交
4477 4478 4479 4480 4481 4482
	return status;
}

/*
 * a SETCLIENTID_CONFIRM request
 */
A
Al Viro 已提交
4483
static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
L
Linus Torvalds 已提交
4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
	if (!status)
		status = decode_setclientid_confirm(&xdr);
	if (!status)
		status = decode_putrootfh(&xdr);
	if (!status)
		status = decode_fsinfo(&xdr, fsinfo);
	if (!status)
4498
		status = -nfs4_stat_to_errno(hdr.status);
L
Linus Torvalds 已提交
4499 4500 4501 4502 4503 4504
	return status;
}

/*
 * DELEGRETURN request
 */
A
Al Viro 已提交
4505
static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
L
Linus Torvalds 已提交
4506 4507 4508 4509 4510 4511 4512
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
4513 4514 4515 4516 4517 4518 4519 4520
	if (status != 0)
		goto out;
	status = decode_putfh(&xdr);
	if (status != 0)
		goto out;
	status = decode_delegreturn(&xdr);
	decode_getfattr(&xdr, res->fattr, res->server);
out:
L
Linus Torvalds 已提交
4521 4522 4523
	return status;
}

4524 4525 4526
/*
 * FS_LOCATIONS request
 */
A
Al Viro 已提交
4527
static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations *res)
4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546
{
	struct xdr_stream xdr;
	struct compound_hdr hdr;
	int status;

	xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
	status = decode_compound_hdr(&xdr, &hdr);
	if (status != 0)
		goto out;
	if ((status = decode_putfh(&xdr)) != 0)
		goto out;
	if ((status = decode_lookup(&xdr)) != 0)
		goto out;
	xdr_enter_page(&xdr, PAGE_SIZE);
	status = decode_getfattr(&xdr, &res->fattr, res->server);
out:
	return status;
}

4547
__be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus)
L
Linus Torvalds 已提交
4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581
{
	uint32_t bitmap[2] = {0};
	uint32_t len;

	if (!*p++) {
		if (!*p)
			return ERR_PTR(-EAGAIN);
		entry->eof = 1;
		return ERR_PTR(-EBADCOOKIE);
	}

	entry->prev_cookie = entry->cookie;
	p = xdr_decode_hyper(p, &entry->cookie);
	entry->len = ntohl(*p++);
	entry->name = (const char *) p;
	p += XDR_QUADLEN(entry->len);

	/*
	 * In case the server doesn't return an inode number,
	 * we fake one here.  (We don't use inode number 0,
	 * since glibc seems to choke on it...)
	 */
	entry->ino = 1;

	len = ntohl(*p++);		/* bitmap length */
	if (len-- > 0) {
		bitmap[0] = ntohl(*p++);
		if (len-- > 0) {
			bitmap[1] = ntohl(*p++);
			p += len;
		}
	}
	len = XDR_QUADLEN(ntohl(*p++));	/* attribute buffer length */
	if (len > 0) {
4582 4583 4584 4585 4586 4587
		if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
			bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
			/* Ignore the return value of rdattr_error for now */
			p++;
			len--;
		}
L
Linus Torvalds 已提交
4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626
		if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
			xdr_decode_hyper(p, &entry->ino);
		else if (bitmap[0] == FATTR4_WORD0_FILEID)
			xdr_decode_hyper(p, &entry->ino);
		p += len;
	}

	entry->eof = !p[0] && p[1];
	return p;
}

/*
 * We need to translate between nfs status return values and
 * the local errno values which may not be the same.
 */
static struct {
	int stat;
	int errno;
} nfs_errtbl[] = {
	{ NFS4_OK,		0		},
	{ NFS4ERR_PERM,		EPERM		},
	{ NFS4ERR_NOENT,	ENOENT		},
	{ NFS4ERR_IO,		errno_NFSERR_IO	},
	{ NFS4ERR_NXIO,		ENXIO		},
	{ NFS4ERR_ACCESS,	EACCES		},
	{ NFS4ERR_EXIST,	EEXIST		},
	{ NFS4ERR_XDEV,		EXDEV		},
	{ NFS4ERR_NOTDIR,	ENOTDIR		},
	{ NFS4ERR_ISDIR,	EISDIR		},
	{ NFS4ERR_INVAL,	EINVAL		},
	{ NFS4ERR_FBIG,		EFBIG		},
	{ NFS4ERR_NOSPC,	ENOSPC		},
	{ NFS4ERR_ROFS,		EROFS		},
	{ NFS4ERR_MLINK,	EMLINK		},
	{ NFS4ERR_NAMETOOLONG,	ENAMETOOLONG	},
	{ NFS4ERR_NOTEMPTY,	ENOTEMPTY	},
	{ NFS4ERR_DQUOT,	EDQUOT		},
	{ NFS4ERR_STALE,	ESTALE		},
	{ NFS4ERR_BADHANDLE,	EBADHANDLE	},
4627 4628
	{ NFS4ERR_BADOWNER,	EINVAL		},
	{ NFS4ERR_BADNAME,	EINVAL		},
L
Linus Torvalds 已提交
4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650
	{ NFS4ERR_BAD_COOKIE,	EBADCOOKIE	},
	{ NFS4ERR_NOTSUPP,	ENOTSUPP	},
	{ NFS4ERR_TOOSMALL,	ETOOSMALL	},
	{ NFS4ERR_SERVERFAULT,	ESERVERFAULT	},
	{ NFS4ERR_BADTYPE,	EBADTYPE	},
	{ NFS4ERR_LOCKED,	EAGAIN		},
	{ NFS4ERR_RESOURCE,	EREMOTEIO	},
	{ NFS4ERR_SYMLINK,	ELOOP		},
	{ NFS4ERR_OP_ILLEGAL,	EOPNOTSUPP	},
	{ NFS4ERR_DEADLOCK,	EDEADLK		},
	{ NFS4ERR_WRONGSEC,	EPERM		}, /* FIXME: this needs
						    * to be handled by a
						    * middle-layer.
						    */
	{ -1,			EIO		}
};

/*
 * Convert an NFS error code to a local one.
 * This one is used jointly by NFSv2 and NFSv3.
 */
static int
4651
nfs4_stat_to_errno(int stat)
L
Linus Torvalds 已提交
4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674
{
	int i;
	for (i = 0; nfs_errtbl[i].stat != -1; i++) {
		if (nfs_errtbl[i].stat == stat)
			return nfs_errtbl[i].errno;
	}
	if (stat <= 10000 || stat > 10100) {
		/* The server is looney tunes. */
		return ESERVERFAULT;
	}
	/* If we cannot translate the error, the recovery routines should
	 * handle it.
	 * Note: remaining NFSv4 error codes have values > 10000, so should
	 * not conflict with native Linux error codes.
	 */
	return stat;
}

#define PROC(proc, argtype, restype)				\
[NFSPROC4_CLNT_##proc] = {					\
	.p_proc   = NFSPROC4_COMPOUND,				\
	.p_encode = (kxdrproc_t) nfs4_xdr_##argtype,		\
	.p_decode = (kxdrproc_t) nfs4_xdr_##restype,		\
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	.p_arglen = NFS4_##argtype##_sz,			\
	.p_replen = NFS4_##restype##_sz,			\
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	.p_statidx = NFSPROC4_CLNT_##proc,			\
	.p_name   = #proc,					\
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    }

struct rpc_procinfo	nfs4_procedures[] = {
  PROC(READ,		enc_read,	dec_read),
  PROC(WRITE,		enc_write,	dec_write),
  PROC(COMMIT,		enc_commit,	dec_commit),
  PROC(OPEN,		enc_open,	dec_open),
  PROC(OPEN_CONFIRM,	enc_open_confirm,	dec_open_confirm),
  PROC(OPEN_NOATTR,	enc_open_noattr,	dec_open_noattr),
  PROC(OPEN_DOWNGRADE,	enc_open_downgrade,	dec_open_downgrade),
  PROC(CLOSE,		enc_close,	dec_close),
  PROC(SETATTR,		enc_setattr,	dec_setattr),
  PROC(FSINFO,		enc_fsinfo,	dec_fsinfo),
  PROC(RENEW,		enc_renew,	dec_renew),
  PROC(SETCLIENTID,	enc_setclientid,	dec_setclientid),
  PROC(SETCLIENTID_CONFIRM,	enc_setclientid_confirm,	dec_setclientid_confirm),
  PROC(LOCK,            enc_lock,       dec_lock),
  PROC(LOCKT,           enc_lockt,      dec_lockt),
  PROC(LOCKU,           enc_locku,      dec_locku),
  PROC(ACCESS,		enc_access,	dec_access),
  PROC(GETATTR,		enc_getattr,	dec_getattr),
  PROC(LOOKUP,		enc_lookup,	dec_lookup),
  PROC(LOOKUP_ROOT,	enc_lookup_root,	dec_lookup_root),
  PROC(REMOVE,		enc_remove,	dec_remove),
  PROC(RENAME,		enc_rename,	dec_rename),
  PROC(LINK,		enc_link,	dec_link),
  PROC(SYMLINK,		enc_symlink,	dec_symlink),
  PROC(CREATE,		enc_create,	dec_create),
  PROC(PATHCONF,	enc_pathconf,	dec_pathconf),
  PROC(STATFS,		enc_statfs,	dec_statfs),
  PROC(READLINK,	enc_readlink,	dec_readlink),
  PROC(READDIR,		enc_readdir,	dec_readdir),
  PROC(SERVER_CAPS,	enc_server_caps, dec_server_caps),
  PROC(DELEGRETURN,	enc_delegreturn, dec_delegreturn),
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  PROC(GETACL,		enc_getacl,	dec_getacl),
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  PROC(SETACL,		enc_setacl,	dec_setacl),
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  PROC(FS_LOCATIONS,	enc_fs_locations, dec_fs_locations),
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};

struct rpc_version		nfs_version4 = {
	.number			= 4,
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	.nrprocs		= ARRAY_SIZE(nfs4_procedures),
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	.procs			= nfs4_procedures
};

/*
 * Local variables:
 *  c-basic-offset: 8
 * End:
 */