nfs4xdr.c 192.1 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>
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 *
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 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. Neither the name of the University nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
 *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 *  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <linux/param.h>
#include <linux/time.h>
#include <linux/mm.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/in.h>
#include <linux/pagemap.h>
#include <linux/proc_fs.h>
#include <linux/kdev_t.h>
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#include <linux/module.h>
#include <linux/utsname.h>
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#include <linux/sunrpc/clnt.h>
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#include <linux/sunrpc/msg_prot.h>
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#include <linux/sunrpc/gss_api.h>
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#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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#include "internal.h"
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#include "nfs4session.h"
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#include "pnfs.h"
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#include "netns.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

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/* 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 + 2 + 1 + 1 + 2)
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#define lock_owner_id_maxsz	(1 + 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 4
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#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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#ifdef CONFIG_NFS_V4_SECURITY_LABEL
/* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */
#define	nfs4_label_maxsz	(4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN))
#else
#define	nfs4_label_maxsz	0
#endif
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/* We support only one layout type per file system */
#define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
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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 + \
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				nfs4_group_maxsz + nfs4_label_maxsz + \
				 decode_mdsthreshold_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 + \
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				nfs4_label_maxsz + \
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				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	(encode_getattr_maxsz)
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/* The 5 accounts for the PNFS attributes, and assumes that at most three
 * layout types will be returned.
 */
#define decode_fsinfo_maxsz	(op_decode_hdr_maxsz + \
				 nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
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#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 + \
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				XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
				XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
				1 /* sc_prog */ + \
				XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
				XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
				1) /* sc_cb_ident */
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#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 + encode_verifier_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 + \
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				 2 + encode_verifier_maxsz + 5 + \
				nfs4_label_maxsz)
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#define decode_readdir_maxsz	(op_decode_hdr_maxsz + \
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				 decode_verifier_maxsz)
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#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)
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#define decode_remove_maxsz	(op_decode_hdr_maxsz + \
				 decode_change_info_maxsz)
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#define encode_rename_maxsz	(op_encode_hdr_maxsz + \
				2 * nfs4_name_maxsz)
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#define decode_rename_maxsz	(op_decode_hdr_maxsz + \
				 decode_change_info_maxsz + \
				 decode_change_info_maxsz)
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#define encode_link_maxsz	(op_encode_hdr_maxsz + \
				nfs4_name_maxsz)
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#define decode_link_maxsz	(op_decode_hdr_maxsz + decode_change_info_maxsz)
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#define encode_lockowner_maxsz	(7)
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#define encode_lock_maxsz	(op_encode_hdr_maxsz + \
				 7 + \
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				 1 + encode_stateid_maxsz + 1 + \
				 encode_lockowner_maxsz)
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#define decode_lock_denied_maxsz \
				(8 + decode_lockowner_maxsz)
#define decode_lock_maxsz	(op_decode_hdr_maxsz + \
				 decode_lock_denied_maxsz)
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#define encode_lockt_maxsz	(op_encode_hdr_maxsz + 5 + \
				encode_lockowner_maxsz)
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#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)
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#define encode_release_lockowner_maxsz \
				(op_encode_hdr_maxsz + \
				 encode_lockowner_maxsz)
#define decode_release_lockowner_maxsz \
				(op_decode_hdr_maxsz)
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#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 encode_secinfo_maxsz	(op_encode_hdr_maxsz + nfs4_name_maxsz)
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#define decode_secinfo_maxsz	(op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
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#if defined(CONFIG_NFS_V4_1)
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#define NFS4_MAX_MACHINE_NAME_LEN (64)
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#define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
			 sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
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#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
				encode_verifier_maxsz + \
				1 /* co_ownerid.len */ + \
				XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
				1 /* flags */ + \
				1 /* spa_how */ + \
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				/* max is SP4_MACH_CRED (for now) */ + \
				1 + NFS4_OP_MAP_NUM_WORDS + \
				1 + NFS4_OP_MAP_NUM_WORDS + \
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				1 /* implementation id array of size 1 */ + \
				1 /* nii_domain */ + \
				XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
				1 /* nii_name */ + \
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				XDR_QUADLEN(IMPL_NAME_LIMIT) + \
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				3 /* nii_date */)
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#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
				2 /* eir_clientid */ + \
				1 /* eir_sequenceid */ + \
				1 /* eir_flags */ + \
				1 /* spr_how */ + \
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				  /* max is SP4_MACH_CRED (for now) */ + \
				1 + NFS4_OP_MAP_NUM_WORDS + \
				1 + NFS4_OP_MAP_NUM_WORDS + \
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				2 /* eir_server_owner.so_minor_id */ + \
				/* eir_server_owner.so_major_id<> */ \
				XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
				/* eir_server_scope<> */ \
				XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
				1 /* eir_server_impl_id array length */ + \
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				1 /* nii_domain */ + \
				XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
				1 /* nii_name */ + \
				XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
				3 /* nii_date */)
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#define encode_channel_attrs_maxsz  (6 + 1 /* ca_rdma_ird.len (0) */)
#define decode_channel_attrs_maxsz  (6 + \
				     1 /* ca_rdma_ird.len */ + \
				     1 /* ca_rdma_ird */)
#define encode_create_session_maxsz  (op_encode_hdr_maxsz + \
				     2 /* csa_clientid */ + \
				     1 /* csa_sequence */ + \
				     1 /* csa_flags */ + \
				     encode_channel_attrs_maxsz + \
				     encode_channel_attrs_maxsz + \
				     1 /* csa_cb_program */ + \
				     1 /* csa_sec_parms.len (1) */ + \
				     1 /* cb_secflavor (AUTH_SYS) */ + \
				     1 /* stamp */ + \
				     1 /* machinename.len */ + \
				     XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
				     1 /* uid */ + \
				     1 /* gid */ + \
				     1 /* gids.len (0) */)
#define decode_create_session_maxsz  (op_decode_hdr_maxsz +	\
				     XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
				     1 /* csr_sequence */ + \
				     1 /* csr_flags */ + \
				     decode_channel_attrs_maxsz + \
				     decode_channel_attrs_maxsz)
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#define encode_bind_conn_to_session_maxsz  (op_encode_hdr_maxsz + \
				     /* bctsa_sessid */ \
				     XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
				     1 /* bctsa_dir */ + \
				     1 /* bctsa_use_conn_in_rdma_mode */)
#define decode_bind_conn_to_session_maxsz  (op_decode_hdr_maxsz +	\
				     /* bctsr_sessid */ \
				     XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
				     1 /* bctsr_dir */ + \
				     1 /* bctsr_use_conn_in_rdma_mode */)
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#define encode_destroy_session_maxsz    (op_encode_hdr_maxsz + 4)
#define decode_destroy_session_maxsz    (op_decode_hdr_maxsz)
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#define encode_destroy_clientid_maxsz   (op_encode_hdr_maxsz + 2)
#define decode_destroy_clientid_maxsz   (op_decode_hdr_maxsz)
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#define encode_sequence_maxsz	(op_encode_hdr_maxsz + \
				XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
#define decode_sequence_maxsz	(op_decode_hdr_maxsz + \
				XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
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#define encode_reclaim_complete_maxsz	(op_encode_hdr_maxsz + 4)
#define decode_reclaim_complete_maxsz	(op_decode_hdr_maxsz + 4)
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#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
				XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
				1 /* layout type */ + \
				1 /* opaque devaddr4 length */ + \
				  /* devaddr4 payload is read into page */ \
				1 /* notification bitmap length */ + \
				1 /* notification bitmap */)
#define encode_layoutget_maxsz	(op_encode_hdr_maxsz + 10 + \
				encode_stateid_maxsz)
#define decode_layoutget_maxsz	(op_decode_hdr_maxsz + 8 + \
				decode_stateid_maxsz + \
				XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
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#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz +          \
				2 /* offset */ + \
				2 /* length */ + \
				1 /* reclaim */ + \
				encode_stateid_maxsz + \
				1 /* new offset (true) */ + \
				2 /* last byte written */ + \
				1 /* nt_timechanged (false) */ + \
				1 /* layoutupdate4 layout type */ + \
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				1 /* layoutupdate4 opaqueue len */)
				  /* the actual content of layoutupdate4 should
				     be allocated by drivers and spliced in
				     using xdr_write_pages */
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#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
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#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
				encode_stateid_maxsz + \
				1 /* FIXME: opaque lrf_body always empty at the moment */)
#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
				1 + decode_stateid_maxsz)
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#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
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#define encode_test_stateid_maxsz	(op_encode_hdr_maxsz + 2 + \
					 XDR_QUADLEN(NFS4_STATEID_SIZE))
#define decode_test_stateid_maxsz	(op_decode_hdr_maxsz + 2 + 1)
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#define encode_free_stateid_maxsz	(op_encode_hdr_maxsz + 1 + \
					 XDR_QUADLEN(NFS4_STATEID_SIZE))
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#define decode_free_stateid_maxsz	(op_decode_hdr_maxsz)
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#else /* CONFIG_NFS_V4_1 */
#define encode_sequence_maxsz	0
#define decode_sequence_maxsz	0
#endif /* CONFIG_NFS_V4_1 */

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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 + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
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				encode_read_maxsz)
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#define NFS4_dec_read_sz	(compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				decode_putfh_maxsz + \
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				decode_read_maxsz)
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#define NFS4_enc_readlink_sz	(compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
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				encode_readlink_maxsz)
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#define NFS4_dec_readlink_sz	(compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				decode_putfh_maxsz + \
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				decode_readlink_maxsz)
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#define NFS4_enc_readdir_sz	(compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
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				encode_readdir_maxsz)
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#define NFS4_dec_readdir_sz	(compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				decode_putfh_maxsz + \
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				decode_readdir_maxsz)
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#define NFS4_enc_write_sz	(compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				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 + \
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				decode_sequence_maxsz + \
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				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 + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
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				encode_commit_maxsz)
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#define NFS4_dec_commit_sz	(compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				decode_putfh_maxsz + \
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				decode_commit_maxsz)
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#define NFS4_enc_open_sz        (compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
				encode_open_maxsz + \
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				encode_access_maxsz + \
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				encode_getfh_maxsz + \
				encode_getattr_maxsz)
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#define NFS4_dec_open_sz        (compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				decode_putfh_maxsz + \
				decode_open_maxsz + \
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				decode_access_maxsz + \
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				decode_getfh_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 + \
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					encode_sequence_maxsz + \
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					encode_putfh_maxsz + \
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					encode_open_maxsz + \
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					encode_access_maxsz + \
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					encode_getattr_maxsz)
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#define NFS4_dec_open_noattr_sz	(compound_decode_hdr_maxsz + \
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					decode_sequence_maxsz + \
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					decode_putfh_maxsz + \
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					decode_open_maxsz + \
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					decode_access_maxsz + \
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					decode_getattr_maxsz)
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#define NFS4_enc_open_downgrade_sz \
				(compound_encode_hdr_maxsz + \
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				 encode_sequence_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_sequence_maxsz + \
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				 decode_putfh_maxsz + \
				 decode_open_downgrade_maxsz + \
				 decode_getattr_maxsz)
#define NFS4_enc_close_sz	(compound_encode_hdr_maxsz + \
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				 encode_sequence_maxsz + \
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				 encode_putfh_maxsz + \
				 encode_close_maxsz + \
				 encode_getattr_maxsz)
#define NFS4_dec_close_sz	(compound_decode_hdr_maxsz + \
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				 decode_sequence_maxsz + \
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				 decode_putfh_maxsz + \
				 decode_close_maxsz + \
				 decode_getattr_maxsz)
#define NFS4_enc_setattr_sz	(compound_encode_hdr_maxsz + \
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				 encode_sequence_maxsz + \
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				 encode_putfh_maxsz + \
				 encode_setattr_maxsz + \
				 encode_getattr_maxsz)
#define NFS4_dec_setattr_sz	(compound_decode_hdr_maxsz + \
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				 decode_sequence_maxsz + \
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				 decode_putfh_maxsz + \
				 decode_setattr_maxsz + \
				 decode_getattr_maxsz)
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#define NFS4_enc_fsinfo_sz	(compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
				encode_fsinfo_maxsz)
#define NFS4_dec_fsinfo_sz	(compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				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 + \
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				encode_setclientid_confirm_maxsz)
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#define NFS4_dec_setclientid_confirm_sz \
				(compound_decode_hdr_maxsz + \
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				decode_setclientid_confirm_maxsz)
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#define NFS4_enc_lock_sz        (compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
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				encode_lock_maxsz)
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#define NFS4_dec_lock_sz        (compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				decode_putfh_maxsz + \
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				decode_lock_maxsz)
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#define NFS4_enc_lockt_sz       (compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
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				encode_lockt_maxsz)
#define NFS4_dec_lockt_sz       (compound_decode_hdr_maxsz + \
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				 decode_sequence_maxsz + \
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				 decode_putfh_maxsz + \
				 decode_lockt_maxsz)
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#define NFS4_enc_locku_sz       (compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
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				encode_locku_maxsz)
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#define NFS4_dec_locku_sz       (compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				decode_putfh_maxsz + \
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				decode_locku_maxsz)
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#define NFS4_enc_release_lockowner_sz \
				(compound_encode_hdr_maxsz + \
				 encode_lockowner_maxsz)
#define NFS4_dec_release_lockowner_sz \
				(compound_decode_hdr_maxsz + \
				 decode_lockowner_maxsz)
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#define NFS4_enc_access_sz	(compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				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 + \
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				decode_sequence_maxsz + \
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				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 + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
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				encode_getattr_maxsz + \
				encode_renew_maxsz)
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#define NFS4_dec_getattr_sz	(compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				decode_putfh_maxsz + \
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				decode_getattr_maxsz + \
				decode_renew_maxsz)
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#define NFS4_enc_lookup_sz	(compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
				encode_lookup_maxsz + \
				encode_getattr_maxsz + \
				encode_getfh_maxsz)
#define NFS4_dec_lookup_sz	(compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				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 + \
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				encode_sequence_maxsz + \
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				encode_putrootfh_maxsz + \
				encode_getattr_maxsz + \
				encode_getfh_maxsz)
#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				decode_putrootfh_maxsz + \
				decode_getattr_maxsz + \
				decode_getfh_maxsz)
#define NFS4_enc_remove_sz	(compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
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				encode_remove_maxsz)
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#define NFS4_dec_remove_sz	(compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				decode_putfh_maxsz + \
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				decode_remove_maxsz)
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#define NFS4_enc_rename_sz	(compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
				encode_savefh_maxsz + \
				encode_putfh_maxsz + \
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				encode_rename_maxsz)
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#define NFS4_dec_rename_sz	(compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				decode_putfh_maxsz + \
				decode_savefh_maxsz + \
				decode_putfh_maxsz + \
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				decode_rename_maxsz)
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#define NFS4_enc_link_sz	(compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
				encode_savefh_maxsz + \
				encode_putfh_maxsz + \
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				encode_link_maxsz + \
				encode_restorefh_maxsz + \
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				encode_getattr_maxsz)
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#define NFS4_dec_link_sz	(compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				decode_putfh_maxsz + \
				decode_savefh_maxsz + \
				decode_putfh_maxsz + \
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				decode_link_maxsz + \
				decode_restorefh_maxsz + \
				decode_getattr_maxsz)
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#define NFS4_enc_symlink_sz	(compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
				encode_symlink_maxsz + \
				encode_getattr_maxsz + \
				encode_getfh_maxsz)
#define NFS4_dec_symlink_sz	(compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				decode_putfh_maxsz + \
				decode_symlink_maxsz + \
				decode_getattr_maxsz + \
				decode_getfh_maxsz)
#define NFS4_enc_create_sz	(compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
				encode_create_maxsz + \
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				encode_getfh_maxsz + \
				encode_getattr_maxsz)
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#define NFS4_dec_create_sz	(compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				decode_putfh_maxsz + \
				decode_create_maxsz + \
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				decode_getfh_maxsz + \
				decode_getattr_maxsz)
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#define NFS4_enc_pathconf_sz	(compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
				encode_getattr_maxsz)
#define NFS4_dec_pathconf_sz	(compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				decode_putfh_maxsz + \
				decode_getattr_maxsz)
#define NFS4_enc_statfs_sz	(compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
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				encode_statfs_maxsz)
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#define NFS4_dec_statfs_sz	(compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				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_sequence_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_sequence_maxsz + \
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				decode_putfh_maxsz + \
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				decode_getattr_maxsz)
#define NFS4_enc_delegreturn_sz	(compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				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_sequence_maxsz + \
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				decode_delegreturn_maxsz + \
				decode_getattr_maxsz)
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#define NFS4_enc_getacl_sz	(compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
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				encode_getacl_maxsz)
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#define NFS4_dec_getacl_sz	(compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				decode_putfh_maxsz + \
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				decode_getacl_maxsz)
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#define NFS4_enc_setacl_sz	(compound_encode_hdr_maxsz + \
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				encode_sequence_maxsz + \
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				encode_putfh_maxsz + \
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				encode_setacl_maxsz)
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#define NFS4_dec_setacl_sz	(compound_decode_hdr_maxsz + \
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				decode_sequence_maxsz + \
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				decode_putfh_maxsz + \
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				decode_setacl_maxsz)
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#define NFS4_enc_fs_locations_sz \
				(compound_encode_hdr_maxsz + \
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				 encode_sequence_maxsz + \
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				 encode_putfh_maxsz + \
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				 encode_lookup_maxsz + \
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				 encode_fs_locations_maxsz + \
				 encode_renew_maxsz)
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#define NFS4_dec_fs_locations_sz \
				(compound_decode_hdr_maxsz + \
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				 decode_sequence_maxsz + \
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				 decode_putfh_maxsz + \
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				 decode_lookup_maxsz + \
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				 decode_fs_locations_maxsz + \
				 decode_renew_maxsz)
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#define NFS4_enc_secinfo_sz 	(compound_encode_hdr_maxsz + \
				encode_sequence_maxsz + \
				encode_putfh_maxsz + \
				encode_secinfo_maxsz)
#define NFS4_dec_secinfo_sz	(compound_decode_hdr_maxsz + \
				decode_sequence_maxsz + \
				decode_putfh_maxsz + \
				decode_secinfo_maxsz)
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#define NFS4_enc_fsid_present_sz \
				(compound_encode_hdr_maxsz + \
				 encode_sequence_maxsz + \
				 encode_putfh_maxsz + \
				 encode_getfh_maxsz + \
				 encode_renew_maxsz)
#define NFS4_dec_fsid_present_sz \
				(compound_decode_hdr_maxsz + \
				 decode_sequence_maxsz + \
				 decode_putfh_maxsz + \
				 decode_getfh_maxsz + \
				 decode_renew_maxsz)
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#if defined(CONFIG_NFS_V4_1)
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#define NFS4_enc_bind_conn_to_session_sz \
				(compound_encode_hdr_maxsz + \
				 encode_bind_conn_to_session_maxsz)
#define NFS4_dec_bind_conn_to_session_sz \
				(compound_decode_hdr_maxsz + \
				 decode_bind_conn_to_session_maxsz)
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#define NFS4_enc_exchange_id_sz \
				(compound_encode_hdr_maxsz + \
				 encode_exchange_id_maxsz)
#define NFS4_dec_exchange_id_sz \
				(compound_decode_hdr_maxsz + \
				 decode_exchange_id_maxsz)
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#define NFS4_enc_create_session_sz \
				(compound_encode_hdr_maxsz + \
				 encode_create_session_maxsz)
#define NFS4_dec_create_session_sz \
				(compound_decode_hdr_maxsz + \
				 decode_create_session_maxsz)
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#define NFS4_enc_destroy_session_sz	(compound_encode_hdr_maxsz + \
					 encode_destroy_session_maxsz)
#define NFS4_dec_destroy_session_sz	(compound_decode_hdr_maxsz + \
					 decode_destroy_session_maxsz)
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#define NFS4_enc_destroy_clientid_sz	(compound_encode_hdr_maxsz + \
					 encode_destroy_clientid_maxsz)
#define NFS4_dec_destroy_clientid_sz	(compound_decode_hdr_maxsz + \
					 decode_destroy_clientid_maxsz)
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#define NFS4_enc_sequence_sz \
				(compound_decode_hdr_maxsz + \
				 encode_sequence_maxsz)
#define NFS4_dec_sequence_sz \
				(compound_decode_hdr_maxsz + \
				 decode_sequence_maxsz)
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#define NFS4_enc_get_lease_time_sz	(compound_encode_hdr_maxsz + \
					 encode_sequence_maxsz + \
					 encode_putrootfh_maxsz + \
					 encode_fsinfo_maxsz)
#define NFS4_dec_get_lease_time_sz	(compound_decode_hdr_maxsz + \
					 decode_sequence_maxsz + \
					 decode_putrootfh_maxsz + \
					 decode_fsinfo_maxsz)
798 799 800 801 802 803
#define NFS4_enc_reclaim_complete_sz	(compound_encode_hdr_maxsz + \
					 encode_sequence_maxsz + \
					 encode_reclaim_complete_maxsz)
#define NFS4_dec_reclaim_complete_sz	(compound_decode_hdr_maxsz + \
					 decode_sequence_maxsz + \
					 decode_reclaim_complete_maxsz)
804 805 806 807 808 809 810 811 812 813 814 815 816 817
#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz +    \
				encode_sequence_maxsz +\
				encode_getdeviceinfo_maxsz)
#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz +    \
				decode_sequence_maxsz + \
				decode_getdeviceinfo_maxsz)
#define NFS4_enc_layoutget_sz	(compound_encode_hdr_maxsz + \
				encode_sequence_maxsz + \
				encode_putfh_maxsz +        \
				encode_layoutget_maxsz)
#define NFS4_dec_layoutget_sz	(compound_decode_hdr_maxsz + \
				decode_sequence_maxsz + \
				decode_putfh_maxsz +        \
				decode_layoutget_maxsz)
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#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
				encode_sequence_maxsz +\
				encode_putfh_maxsz + \
				encode_layoutcommit_maxsz + \
				encode_getattr_maxsz)
#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
				decode_sequence_maxsz + \
				decode_putfh_maxsz + \
				decode_layoutcommit_maxsz + \
				decode_getattr_maxsz)
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#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
				encode_sequence_maxsz + \
				encode_putfh_maxsz + \
				encode_layoutreturn_maxsz)
#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
				decode_sequence_maxsz + \
				decode_putfh_maxsz + \
				decode_layoutreturn_maxsz)
836 837 838 839 840 841 842 843
#define NFS4_enc_secinfo_no_name_sz	(compound_encode_hdr_maxsz + \
					encode_sequence_maxsz + \
					encode_putrootfh_maxsz +\
					encode_secinfo_no_name_maxsz)
#define NFS4_dec_secinfo_no_name_sz	(compound_decode_hdr_maxsz + \
					decode_sequence_maxsz + \
					decode_putrootfh_maxsz + \
					decode_secinfo_no_name_maxsz)
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#define NFS4_enc_test_stateid_sz	(compound_encode_hdr_maxsz + \
					 encode_sequence_maxsz + \
					 encode_test_stateid_maxsz)
#define NFS4_dec_test_stateid_sz	(compound_decode_hdr_maxsz + \
					 decode_sequence_maxsz + \
					 decode_test_stateid_maxsz)
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#define NFS4_enc_free_stateid_sz	(compound_encode_hdr_maxsz + \
					 encode_sequence_maxsz + \
					 encode_free_stateid_maxsz)
#define NFS4_dec_free_stateid_sz	(compound_decode_hdr_maxsz + \
					 decode_sequence_maxsz + \
					 decode_free_stateid_maxsz)
856 857 858 859 860 861 862 863 864 865 866 867 868

const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
				      compound_encode_hdr_maxsz +
				      encode_sequence_maxsz +
				      encode_putfh_maxsz +
				      encode_getattr_maxsz) *
				     XDR_UNIT);

const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
				     compound_decode_hdr_maxsz +
				     decode_sequence_maxsz +
				     decode_putfh_maxsz) *
				    XDR_UNIT);
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const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH +
					   compound_decode_hdr_maxsz +
					   decode_sequence_maxsz) *
					  XDR_UNIT);
EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead);
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#endif /* CONFIG_NFS_V4_1 */
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877 878 879 880 881 882 883 884 885 886 887
static const umode_t nfs_type2fmt[] = {
	[NF4BAD] = 0,
	[NF4REG] = S_IFREG,
	[NF4DIR] = S_IFDIR,
	[NF4BLK] = S_IFBLK,
	[NF4CHR] = S_IFCHR,
	[NF4LNK] = S_IFLNK,
	[NF4SOCK] = S_IFSOCK,
	[NF4FIFO] = S_IFIFO,
	[NF4ATTRDIR] = 0,
	[NF4NAMEDATTR] = 0,
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};

struct compound_hdr {
	int32_t		status;
	uint32_t	nops;
893
	__be32 *	nops_p;
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	uint32_t	taglen;
	char *		tag;
896
	uint32_t	replen;		/* expected reply words */
897
	u32		minorversion;
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};

900 901 902 903 904 905
static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
{
	__be32 *p = xdr_reserve_space(xdr, nbytes);
	BUG_ON(!p);
	return p;
}
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907 908 909 910 911 912 913 914
static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
{
	__be32 *p;

	p = xdr_reserve_space(xdr, len);
	xdr_encode_opaque_fixed(p, buf, len);
}

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static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
{
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	__be32 *p;
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919
	p = reserve_space(xdr, 4 + len);
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	xdr_encode_opaque(p, str, len);
}

923 924 925 926 927 928 929 930
static void encode_uint32(struct xdr_stream *xdr, u32 n)
{
	__be32 *p;

	p = reserve_space(xdr, 4);
	*p = cpu_to_be32(n);
}

931 932 933 934 935 936 937 938
static void encode_uint64(struct xdr_stream *xdr, u64 n)
{
	__be32 *p;

	p = reserve_space(xdr, 8);
	xdr_encode_hyper(p, n);
}

939 940 941 942 943 944
static void encode_nfs4_seqid(struct xdr_stream *xdr,
		const struct nfs_seqid *seqid)
{
	encode_uint32(xdr, seqid->sequence->counter);
}

945 946 947
static void encode_compound_hdr(struct xdr_stream *xdr,
				struct rpc_rqst *req,
				struct compound_hdr *hdr)
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{
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	__be32 *p;
950
	struct rpc_auth *auth = req->rq_cred->cr_auth;
951 952 953 954 955

	/* initialize running count of expected bytes in reply.
	 * NOTE: the replied tag SHOULD be the same is the one sent,
	 * but this is not required as a MUST for the server to do so. */
	hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
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957
	WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
958 959
	encode_string(xdr, hdr->taglen, hdr->tag);
	p = reserve_space(xdr, 8);
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	*p++ = cpu_to_be32(hdr->minorversion);
961
	hdr->nops_p = p;
962
	*p = cpu_to_be32(hdr->nops);
963 964
}

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static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
		uint32_t replen,
		struct compound_hdr *hdr)
{
	encode_uint32(xdr, op);
	hdr->nops++;
	hdr->replen += replen;
}

974 975
static void encode_nops(struct compound_hdr *hdr)
{
976
	WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
977
	*hdr->nops_p = htonl(hdr->nops);
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}

980 981
static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
{
982
	encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
983 984
}

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static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
{
987
	encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
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}

990 991 992
static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
				const struct nfs4_label *label,
				const struct nfs_server *server)
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{
	char owner_name[IDMAP_NAMESZ];
	char owner_group[IDMAP_NAMESZ];
	int owner_namelen = 0;
	int owner_grouplen = 0;
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	__be32 *p;
999 1000 1001 1002
	unsigned i;
	uint32_t len = 0;
	uint32_t bmval_len;
	uint32_t bmval[3] = { 0 };
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	/*
	 * We reserve enough space to write the entire attribute buffer at once.
	 * In the worst-case, this would be
1007 1008
	 * 16(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
	 * = 40 bytes, plus any contribution from variable-length fields
1009
	 *            such as owner/group.
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	 */
1011 1012
	if (iap->ia_valid & ATTR_SIZE) {
		bmval[0] |= FATTR4_WORD0_SIZE;
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		len += 8;
1014 1015 1016
	}
	if (iap->ia_valid & ATTR_MODE) {
		bmval[1] |= FATTR4_WORD1_MODE;
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		len += 4;
1018
	}
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	if (iap->ia_valid & ATTR_UID) {
1020
		owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
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		if (owner_namelen < 0) {
1022
			dprintk("nfs: couldn't resolve uid %d to string\n",
1023
					from_kuid(&init_user_ns, iap->ia_uid));
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			/* XXX */
			strcpy(owner_name, "nobody");
			owner_namelen = sizeof("nobody") - 1;
			/* goto out; */
		}
1029
		bmval[1] |= FATTR4_WORD1_OWNER;
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		len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
	}
	if (iap->ia_valid & ATTR_GID) {
1033
		owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
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		if (owner_grouplen < 0) {
1035
			dprintk("nfs: couldn't resolve gid %d to string\n",
1036
					from_kgid(&init_user_ns, iap->ia_gid));
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			strcpy(owner_group, "nobody");
			owner_grouplen = sizeof("nobody") - 1;
			/* goto out; */
		}
1041
		bmval[1] |= FATTR4_WORD1_OWNER_GROUP;
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		len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
	}
1044 1045
	if (iap->ia_valid & ATTR_ATIME_SET) {
		bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
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		len += 16;
1047 1048
	} else if (iap->ia_valid & ATTR_ATIME) {
		bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
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		len += 4;
1050 1051 1052
	}
	if (iap->ia_valid & ATTR_MTIME_SET) {
		bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
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		len += 16;
1054 1055
	} else if (iap->ia_valid & ATTR_MTIME) {
		bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
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		len += 4;
1057
	}
1058 1059
	if (label) {
		len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2);
1060
		bmval[2] |= FATTR4_WORD2_SECURITY_LABEL;
1061 1062
	}

1063 1064 1065 1066 1067 1068 1069 1070
	if (bmval[2] != 0)
		bmval_len = 3;
	else if (bmval[1] != 0)
		bmval_len = 2;
	else
		bmval_len = 1;

	p = reserve_space(xdr, 4 + (bmval_len << 2) + 4 + len);
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1072
	*p++ = cpu_to_be32(bmval_len);
1073 1074 1075
	for (i = 0; i < bmval_len; i++)
		*p++ = cpu_to_be32(bmval[i]);
	*p++ = cpu_to_be32(len);
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1077
	if (bmval[0] & FATTR4_WORD0_SIZE)
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		p = xdr_encode_hyper(p, iap->ia_size);
1079
	if (bmval[1] & FATTR4_WORD1_MODE)
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		*p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
1081
	if (bmval[1] & FATTR4_WORD1_OWNER)
1082
		p = xdr_encode_opaque(p, owner_name, owner_namelen);
1083
	if (bmval[1] & FATTR4_WORD1_OWNER_GROUP)
1084
		p = xdr_encode_opaque(p, owner_group, owner_grouplen);
1085 1086 1087 1088 1089 1090 1091
	if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
		if (iap->ia_valid & ATTR_ATIME_SET) {
			*p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
			p = xdr_encode_hyper(p, (s64)iap->ia_atime.tv_sec);
			*p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
		} else
			*p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
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	}
1093 1094 1095 1096 1097 1098 1099
	if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
		if (iap->ia_valid & ATTR_MTIME_SET) {
			*p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
			p = xdr_encode_hyper(p, (s64)iap->ia_mtime.tv_sec);
			*p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
		} else
			*p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
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	}
1101
	if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) {
1102 1103 1104 1105 1106
		*p++ = cpu_to_be32(label->lfs);
		*p++ = cpu_to_be32(label->pi);
		*p++ = cpu_to_be32(label->len);
		p = xdr_encode_opaque_fixed(p, label->label, label->len);
	}
1107

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/* out: */
}

1111
static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
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1112
{
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	encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
	encode_uint32(xdr, access);
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}

1117
static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
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1118
{
T
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1119
	encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
1120
	encode_nfs4_seqid(xdr, arg->seqid);
1121
	encode_nfs4_stateid(xdr, arg->stateid);
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}

1124
static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
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1125
{
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1126
	__be32 *p;
1127

T
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	encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
	p = reserve_space(xdr, 12);
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1130
	p = xdr_encode_hyper(p, args->offset);
1131
	*p = cpu_to_be32(args->count);
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1132 1133
}

1134
static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
L
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1135
{
A
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1136
	__be32 *p;
1137

T
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1138 1139
	encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
	encode_uint32(xdr, create->ftype);
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1140 1141 1142

	switch (create->ftype) {
	case NF4LNK:
1143
		p = reserve_space(xdr, 4);
1144
		*p = cpu_to_be32(create->u.symlink.len);
1145
		xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
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		break;

	case NF4BLK: case NF4CHR:
1149
		p = reserve_space(xdr, 8);
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		*p++ = cpu_to_be32(create->u.device.specdata1);
1151
		*p = cpu_to_be32(create->u.device.specdata2);
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		break;

	default:
		break;
	}

1158
	encode_string(xdr, create->name->len, create->name->name);
1159
	encode_attrs(xdr, create->attrs, create->label, create->server);
L
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}

1162
static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
L
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1163
{
A
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1164
	__be32 *p;
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1165

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	encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
	p = reserve_space(xdr, 8);
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1168
	*p++ = cpu_to_be32(1);
1169
	*p = cpu_to_be32(bitmap);
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1170 1171
}

1172
static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
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1173
{
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1174
	__be32 *p;
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1175

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	encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
	p = reserve_space(xdr, 12);
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	*p++ = cpu_to_be32(2);
	*p++ = cpu_to_be32(bm0);
1180
	*p = cpu_to_be32(bm1);
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}

1183 1184 1185 1186 1187 1188 1189
static void
encode_getattr_three(struct xdr_stream *xdr,
		     uint32_t bm0, uint32_t bm1, uint32_t bm2,
		     struct compound_hdr *hdr)
{
	__be32 *p;

T
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1190
	encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208
	if (bm2) {
		p = reserve_space(xdr, 16);
		*p++ = cpu_to_be32(3);
		*p++ = cpu_to_be32(bm0);
		*p++ = cpu_to_be32(bm1);
		*p = cpu_to_be32(bm2);
	} else if (bm1) {
		p = reserve_space(xdr, 12);
		*p++ = cpu_to_be32(2);
		*p++ = cpu_to_be32(bm0);
		*p = cpu_to_be32(bm1);
	} else {
		p = reserve_space(xdr, 8);
		*p++ = cpu_to_be32(1);
		*p = cpu_to_be32(bm0);
	}
}

1209
static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
L
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1210
{
1211 1212 1213 1214
	encode_getattr_three(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
			   bitmask[1] & nfs4_fattr_bitmap[1],
			   bitmask[2] & nfs4_fattr_bitmap[2],
			   hdr);
L
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1215 1216
}

1217
static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
1218
				 const u32 *open_bitmap,
1219 1220 1221
				 struct compound_hdr *hdr)
{
	encode_getattr_three(xdr,
1222 1223 1224
			     bitmask[0] & open_bitmap[0],
			     bitmask[1] & open_bitmap[1],
			     bitmask[2] & open_bitmap[2],
1225 1226 1227
			     hdr);
}

1228
static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1229
{
1230 1231 1232 1233 1234
	encode_getattr_three(xdr,
			     bitmask[0] & nfs4_fsinfo_bitmap[0],
			     bitmask[1] & nfs4_fsinfo_bitmap[1],
			     bitmask[2] & nfs4_fsinfo_bitmap[2],
			     hdr);
L
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1235 1236
}

1237
static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
1238
{
1239 1240
	encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
			   bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
1241 1242
}

1243
static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1244
{
T
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1245
	encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
L
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1246 1247
}

1248
static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1249
{
T
Trond Myklebust 已提交
1250
	encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
1251
	encode_string(xdr, name->len, name->name);
L
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1252 1253
}

T
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1254 1255
static inline int nfs4_lock_type(struct file_lock *fl, int block)
{
1256
	if (fl->fl_type == F_RDLCK)
T
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1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267
		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;
}

1268 1269 1270 1271
static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
{
	__be32 *p;

1272
	p = reserve_space(xdr, 32);
1273
	p = xdr_encode_hyper(p, lowner->clientid);
1274
	*p++ = cpu_to_be32(20);
1275
	p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1276
	*p++ = cpu_to_be32(lowner->s_dev);
1277 1278 1279
	xdr_encode_hyper(p, lowner->id);
}

L
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1280 1281 1282 1283
/*
 * opcode,type,reclaim,offset,length,new_lock_owner = 32
 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
 */
1284
static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
L
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1285
{
A
Al Viro 已提交
1286
	__be32 *p;
L
Linus Torvalds 已提交
1287

T
Trond Myklebust 已提交
1288 1289
	encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
	p = reserve_space(xdr, 28);
B
Benny Halevy 已提交
1290 1291
	*p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
	*p++ = cpu_to_be32(args->reclaim);
B
Benny Halevy 已提交
1292 1293
	p = xdr_encode_hyper(p, args->fl->fl_start);
	p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1294
	*p = cpu_to_be32(args->new_lock_owner);
T
Trond Myklebust 已提交
1295
	if (args->new_lock_owner){
1296
		encode_nfs4_seqid(xdr, args->open_seqid);
1297
		encode_nfs4_stateid(xdr, args->open_stateid);
1298
		encode_nfs4_seqid(xdr, args->lock_seqid);
1299
		encode_lockowner(xdr, &args->lock_owner);
L
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1300 1301
	}
	else {
1302
		encode_nfs4_stateid(xdr, args->lock_stateid);
1303
		encode_nfs4_seqid(xdr, args->lock_seqid);
L
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1304 1305 1306
	}
}

1307
static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1308
{
A
Al Viro 已提交
1309
	__be32 *p;
L
Linus Torvalds 已提交
1310

T
Trond Myklebust 已提交
1311 1312
	encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
	p = reserve_space(xdr, 20);
B
Benny Halevy 已提交
1313
	*p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
B
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1314 1315
	p = xdr_encode_hyper(p, args->fl->fl_start);
	p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
1316
	encode_lockowner(xdr, &args->lock_owner);
L
Linus Torvalds 已提交
1317 1318
}

1319
static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1320
{
A
Al Viro 已提交
1321
	__be32 *p;
L
Linus Torvalds 已提交
1322

T
Trond Myklebust 已提交
1323 1324
	encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
	encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
1325
	encode_nfs4_seqid(xdr, args->seqid);
1326 1327
	encode_nfs4_stateid(xdr, args->stateid);
	p = reserve_space(xdr, 16);
B
Benny Halevy 已提交
1328
	p = xdr_encode_hyper(p, args->fl->fl_start);
1329
	xdr_encode_hyper(p, nfs4_lock_length(args->fl));
L
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1330 1331
}

1332 1333
static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
{
T
Trond Myklebust 已提交
1334
	encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
1335 1336 1337
	encode_lockowner(xdr, lowner);
}

1338
static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1339
{
T
Trond Myklebust 已提交
1340
	encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
1341
	encode_string(xdr, name->len, name->name);
L
Linus Torvalds 已提交
1342 1343
}

1344
static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
L
Linus Torvalds 已提交
1345
{
A
Al Viro 已提交
1346
	__be32 *p;
L
Linus Torvalds 已提交
1347

1348
	p = reserve_space(xdr, 8);
1349
	switch (fmode & (FMODE_READ|FMODE_WRITE)) {
A
Andy Adamson 已提交
1350
	case FMODE_READ:
B
Benny Halevy 已提交
1351
		*p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
A
Andy Adamson 已提交
1352 1353
		break;
	case FMODE_WRITE:
B
Benny Halevy 已提交
1354
		*p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
A
Andy Adamson 已提交
1355 1356
		break;
	case FMODE_READ|FMODE_WRITE:
B
Benny Halevy 已提交
1357
		*p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
A
Andy Adamson 已提交
1358 1359
		break;
	default:
B
Benny Halevy 已提交
1360
		*p++ = cpu_to_be32(0);
L
Linus Torvalds 已提交
1361
	}
1362
	*p = cpu_to_be32(0);		/* for linux, share_deny = 0 always */
L
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1363 1364 1365 1366
}

static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
{
A
Al Viro 已提交
1367
	__be32 *p;
L
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1368 1369 1370 1371
 /*
 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
 * owner 4 = 32
 */
1372
	encode_nfs4_seqid(xdr, arg->seqid);
1373
	encode_share_access(xdr, arg->fmode);
1374
	p = reserve_space(xdr, 36);
B
Benny Halevy 已提交
1375
	p = xdr_encode_hyper(p, arg->clientid);
1376
	*p++ = cpu_to_be32(24);
B
Benny Halevy 已提交
1377
	p = xdr_encode_opaque_fixed(p, "open id:", 8);
1378
	*p++ = cpu_to_be32(arg->server->s_dev);
1379 1380
	*p++ = cpu_to_be32(arg->id.uniquifier);
	xdr_encode_hyper(p, arg->id.create_time);
L
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1381 1382 1383 1384
}

static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
{
1385
	struct iattr dummy;
A
Al Viro 已提交
1386
	__be32 *p;
L
Linus Torvalds 已提交
1387

1388
	p = reserve_space(xdr, 4);
1389 1390
	switch(arg->createmode) {
	case NFS4_CREATE_UNCHECKED:
1391
		*p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
1392
		encode_attrs(xdr, arg->u.attrs, arg->label, arg->server);
A
Andy Adamson 已提交
1393
		break;
1394 1395
	case NFS4_CREATE_GUARDED:
		*p = cpu_to_be32(NFS4_CREATE_GUARDED);
1396
		encode_attrs(xdr, arg->u.attrs, arg->label, arg->server);
1397 1398 1399 1400 1401 1402 1403 1404 1405
		break;
	case NFS4_CREATE_EXCLUSIVE:
		*p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
		encode_nfs4_verifier(xdr, &arg->u.verifier);
		break;
	case NFS4_CREATE_EXCLUSIVE4_1:
		*p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
		encode_nfs4_verifier(xdr, &arg->u.verifier);
		dummy.ia_valid = 0;
1406
		encode_attrs(xdr, &dummy, arg->label, arg->server);
L
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1407 1408 1409 1410 1411
	}
}

static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
{
A
Al Viro 已提交
1412
	__be32 *p;
L
Linus Torvalds 已提交
1413

1414
	p = reserve_space(xdr, 4);
L
Linus Torvalds 已提交
1415
	switch (arg->open_flags & O_CREAT) {
A
Andy Adamson 已提交
1416
	case 0:
1417
		*p = cpu_to_be32(NFS4_OPEN_NOCREATE);
A
Andy Adamson 已提交
1418 1419
		break;
	default:
1420
		*p = cpu_to_be32(NFS4_OPEN_CREATE);
A
Andy Adamson 已提交
1421
		encode_createmode(xdr, arg);
L
Linus Torvalds 已提交
1422 1423 1424
	}
}

1425
static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
L
Linus Torvalds 已提交
1426
{
A
Al Viro 已提交
1427
	__be32 *p;
L
Linus Torvalds 已提交
1428

1429
	p = reserve_space(xdr, 4);
L
Linus Torvalds 已提交
1430
	switch (delegation_type) {
A
Andy Adamson 已提交
1431
	case 0:
1432
		*p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
A
Andy Adamson 已提交
1433 1434
		break;
	case FMODE_READ:
1435
		*p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
A
Andy Adamson 已提交
1436 1437
		break;
	case FMODE_WRITE|FMODE_READ:
1438
		*p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
A
Andy Adamson 已提交
1439 1440 1441
		break;
	default:
		BUG();
L
Linus Torvalds 已提交
1442 1443 1444 1445 1446
	}
}

static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
{
A
Al Viro 已提交
1447
	__be32 *p;
L
Linus Torvalds 已提交
1448

1449
	p = reserve_space(xdr, 4);
1450
	*p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
L
Linus Torvalds 已提交
1451 1452 1453
	encode_string(xdr, name->len, name->name);
}

1454
static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
L
Linus Torvalds 已提交
1455
{
A
Al Viro 已提交
1456
	__be32 *p;
L
Linus Torvalds 已提交
1457

1458
	p = reserve_space(xdr, 4);
1459
	*p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
L
Linus Torvalds 已提交
1460 1461 1462 1463 1464
	encode_delegation_type(xdr, type);
}

static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
{
A
Al Viro 已提交
1465
	__be32 *p;
L
Linus Torvalds 已提交
1466

1467 1468 1469
	p = reserve_space(xdr, 4);
	*p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
	encode_nfs4_stateid(xdr, stateid);
L
Linus Torvalds 已提交
1470 1471 1472
	encode_string(xdr, name->len, name->name);
}

1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489
static inline void encode_claim_fh(struct xdr_stream *xdr)
{
	__be32 *p;

	p = reserve_space(xdr, 4);
	*p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
}

static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
{
	__be32 *p;

	p = reserve_space(xdr, 4);
	*p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
	encode_nfs4_stateid(xdr, stateid);
}

1490
static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1491
{
T
Trond Myklebust 已提交
1492
	encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, hdr);
L
Linus Torvalds 已提交
1493 1494 1495
	encode_openhdr(xdr, arg);
	encode_opentype(xdr, arg);
	switch (arg->claim) {
A
Andy Adamson 已提交
1496 1497 1498 1499 1500 1501 1502 1503 1504
	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;
1505 1506 1507 1508 1509 1510
	case NFS4_OPEN_CLAIM_FH:
		encode_claim_fh(xdr);
		break;
	case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
		encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
		break;
A
Andy Adamson 已提交
1511 1512
	default:
		BUG();
L
Linus Torvalds 已提交
1513 1514 1515
	}
}

1516
static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1517
{
T
Trond Myklebust 已提交
1518
	encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
1519
	encode_nfs4_stateid(xdr, arg->stateid);
1520
	encode_nfs4_seqid(xdr, arg->seqid);
L
Linus Torvalds 已提交
1521 1522
}

1523
static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1524
{
T
Trond Myklebust 已提交
1525
	encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
1526
	encode_nfs4_stateid(xdr, arg->stateid);
1527
	encode_nfs4_seqid(xdr, arg->seqid);
1528
	encode_share_access(xdr, arg->fmode);
L
Linus Torvalds 已提交
1529 1530
}

1531
static void
1532
encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1533
{
T
Trond Myklebust 已提交
1534
	encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
1535
	encode_string(xdr, fh->size, fh->data);
L
Linus Torvalds 已提交
1536 1537
}

1538
static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1539
{
T
Trond Myklebust 已提交
1540
	encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
L
Linus Torvalds 已提交
1541 1542
}

1543 1544
static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
			struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1545
{
A
Al Viro 已提交
1546
	__be32 *p;
L
Linus Torvalds 已提交
1547

T
Trond Myklebust 已提交
1548
	encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
1549
	encode_nfs4_stateid(xdr, &args->stateid);
L
Linus Torvalds 已提交
1550

1551
	p = reserve_space(xdr, 12);
B
Benny Halevy 已提交
1552
	p = xdr_encode_hyper(p, args->offset);
1553
	*p = cpu_to_be32(args->count);
L
Linus Torvalds 已提交
1554 1555
}

1556
static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1557
{
1558
	uint32_t attrs[3] = {
1559 1560 1561
		FATTR4_WORD0_RDATTR_ERROR,
		FATTR4_WORD1_MOUNTED_ON_FILEID,
	};
1562
	uint32_t dircount = readdir->count >> 1;
1563
	__be32 *p, verf[2];
1564 1565
	uint32_t attrlen = 0;
	unsigned int i;
L
Linus Torvalds 已提交
1566

B
Bryan Schumaker 已提交
1567 1568
	if (readdir->plus) {
		attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1569
			FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
B
Bryan Schumaker 已提交
1570 1571 1572 1573
		attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
			FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
			FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
			FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
1574
		attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
1575
		dircount >>= 1;
B
Bryan Schumaker 已提交
1576
	}
1577 1578 1579
	/* Use mounted_on_fileid only if the server supports it */
	if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
		attrs[0] |= FATTR4_WORD0_FILEID;
1580 1581 1582 1583 1584
	for (i = 0; i < ARRAY_SIZE(attrs); i++) {
		attrs[i] &= readdir->bitmask[i];
		if (attrs[i] != 0)
			attrlen = i+1;
	}
B
Bryan Schumaker 已提交
1585

T
Trond Myklebust 已提交
1586
	encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
1587
	encode_uint64(xdr, readdir->cookie);
1588
	encode_nfs4_verifier(xdr, &readdir->verifier);
1589
	p = reserve_space(xdr, 12 + (attrlen << 2));
1590
	*p++ = cpu_to_be32(dircount);
B
Benny Halevy 已提交
1591
	*p++ = cpu_to_be32(readdir->count);
1592 1593 1594
	*p++ = cpu_to_be32(attrlen);
	for (i = 0; i < attrlen; i++)
		*p++ = cpu_to_be32(attrs[i]);
1595
	memcpy(verf, readdir->verifier.data, sizeof(verf));
1596 1597

	dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
1598
			__func__,
1599
			(unsigned long long)readdir->cookie,
1600
			verf[0], verf[1],
1601
			attrs[0] & readdir->bitmask[0],
1602 1603
			attrs[1] & readdir->bitmask[1],
			attrs[2] & readdir->bitmask[2]);
L
Linus Torvalds 已提交
1604 1605
}

1606
static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1607
{
T
Trond Myklebust 已提交
1608
	encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
L
Linus Torvalds 已提交
1609 1610
}

1611
static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1612
{
T
Trond Myklebust 已提交
1613
	encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
1614
	encode_string(xdr, name->len, name->name);
L
Linus Torvalds 已提交
1615 1616
}

1617
static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1618
{
T
Trond Myklebust 已提交
1619
	encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
1620 1621
	encode_string(xdr, oldname->len, oldname->name);
	encode_string(xdr, newname->len, newname->name);
L
Linus Torvalds 已提交
1622 1623
}

1624 1625
static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
			 struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1626
{
T
Trond Myklebust 已提交
1627
	encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
1628
	encode_uint64(xdr, clid);
L
Linus Torvalds 已提交
1629 1630
}

1631
static void
1632
encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
1633
{
T
Trond Myklebust 已提交
1634
	encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
1635 1636
}

1637
static void
1638
encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
1639
{
A
Al Viro 已提交
1640
	__be32 *p;
1641

T
Trond Myklebust 已提交
1642
	encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
1643
	encode_nfs4_stateid(xdr, &zero_stateid);
1644
	p = reserve_space(xdr, 2*4);
B
Benny Halevy 已提交
1645
	*p++ = cpu_to_be32(1);
1646
	*p = cpu_to_be32(FATTR4_WORD0_ACL);
1647
	p = reserve_space(xdr, 4);
1648
	*p = cpu_to_be32(arg->acl_len);
1649 1650 1651
	xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
}

1652
static void
1653
encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1654
{
T
Trond Myklebust 已提交
1655
	encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
L
Linus Torvalds 已提交
1656 1657
}

1658
static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1659
{
T
Trond Myklebust 已提交
1660
	encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
1661
	encode_nfs4_stateid(xdr, &arg->stateid);
1662
	encode_attrs(xdr, arg->iap, arg->label, server);
L
Linus Torvalds 已提交
1663 1664
}

1665
static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1666
{
A
Al Viro 已提交
1667
	__be32 *p;
L
Linus Torvalds 已提交
1668

1669
	encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
1670
	encode_nfs4_verifier(xdr, setclientid->sc_verifier);
L
Linus Torvalds 已提交
1671 1672

	encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1673
	p = reserve_space(xdr, 4);
1674
	*p = cpu_to_be32(setclientid->sc_prog);
L
Linus Torvalds 已提交
1675 1676
	encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
	encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1677
	p = reserve_space(xdr, 4);
1678
	*p = cpu_to_be32(setclientid->sc_cb_ident);
L
Linus Torvalds 已提交
1679 1680
}

1681
static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1682
{
T
Trond Myklebust 已提交
1683 1684
	encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
			decode_setclientid_confirm_maxsz, hdr);
1685
	encode_uint64(xdr, arg->clientid);
1686
	encode_nfs4_verifier(xdr, &arg->confirm);
L
Linus Torvalds 已提交
1687 1688
}

1689 1690
static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
			 struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1691
{
A
Al Viro 已提交
1692
	__be32 *p;
L
Linus Torvalds 已提交
1693

T
Trond Myklebust 已提交
1694
	encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
1695
	encode_nfs4_stateid(xdr, &args->stateid);
L
Linus Torvalds 已提交
1696

1697
	p = reserve_space(xdr, 16);
B
Benny Halevy 已提交
1698
	p = xdr_encode_hyper(p, args->offset);
B
Benny Halevy 已提交
1699
	*p++ = cpu_to_be32(args->stable);
1700
	*p = cpu_to_be32(args->count);
L
Linus Torvalds 已提交
1701 1702 1703 1704

	xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
}

1705
static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
L
Linus Torvalds 已提交
1706
{
T
Trond Myklebust 已提交
1707
	encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
1708
	encode_nfs4_stateid(xdr, stateid);
L
Linus Torvalds 已提交
1709
}
1710

B
Bryan Schumaker 已提交
1711 1712
static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
{
T
Trond Myklebust 已提交
1713
	encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
1714
	encode_string(xdr, name->len, name->name);
B
Bryan Schumaker 已提交
1715 1716
}

B
Benny Halevy 已提交
1717
#if defined(CONFIG_NFS_V4_1)
1718
/* NFSv4.1 operations */
1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732
static void encode_bind_conn_to_session(struct xdr_stream *xdr,
				   struct nfs4_session *session,
				   struct compound_hdr *hdr)
{
	__be32 *p;

	encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
		decode_bind_conn_to_session_maxsz, hdr);
	encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
	p = xdr_reserve_space(xdr, 8);
	*p++ = cpu_to_be32(NFS4_CDFC4_BACK_OR_BOTH);
	*p = 0;	/* use_conn_in_rdma_mode = False */
}

1733 1734 1735 1736 1737 1738 1739 1740
static void encode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
{
	unsigned int i;
	encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS);
	for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++)
		encode_uint32(xdr, op_map->u.words[i]);
}

B
Benny Halevy 已提交
1741 1742 1743 1744 1745
static void encode_exchange_id(struct xdr_stream *xdr,
			       struct nfs41_exchange_id_args *args,
			       struct compound_hdr *hdr)
{
	__be32 *p;
1746
	char impl_name[IMPL_NAME_LIMIT];
1747
	int len = 0;
B
Benny Halevy 已提交
1748

1749
	encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
1750
	encode_nfs4_verifier(xdr, args->verifier);
B
Benny Halevy 已提交
1751 1752 1753

	encode_string(xdr, args->id_len, args->id);

1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767
	encode_uint32(xdr, args->flags);
	encode_uint32(xdr, args->state_protect.how);

	switch (args->state_protect.how) {
	case SP4_NONE:
		break;
	case SP4_MACH_CRED:
		encode_op_map(xdr, &args->state_protect.enforce);
		encode_op_map(xdr, &args->state_protect.allow);
		break;
	default:
		WARN_ON_ONCE(1);
		break;
	}
1768 1769 1770 1771

	if (send_implementation_id &&
	    sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
	    sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
1772
		<= sizeof(impl_name) + 1)
1773 1774 1775 1776 1777
		len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
			       utsname()->sysname, utsname()->release,
			       utsname()->version, utsname()->machine);

	if (len > 0) {
1778
		encode_uint32(xdr, 1);	/* implementation id array length=1 */
1779 1780 1781 1782 1783 1784 1785 1786 1787 1788

		encode_string(xdr,
			sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
			CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
		encode_string(xdr, len, impl_name);
		/* just send zeros for nii_date - the date is in nii_name */
		p = reserve_space(xdr, 12);
		p = xdr_encode_hyper(p, 0);
		*p = cpu_to_be32(0);
	} else
1789
		encode_uint32(xdr, 0);	/* implementation id array length=0 */
B
Benny Halevy 已提交
1790
}
A
Andy Adamson 已提交
1791 1792 1793 1794 1795 1796 1797 1798 1799

static void encode_create_session(struct xdr_stream *xdr,
				  struct nfs41_create_session_args *args,
				  struct compound_hdr *hdr)
{
	__be32 *p;
	char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
	uint32_t len;
	struct nfs_client *clp = args->client;
1800
	struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
1801 1802 1803 1804 1805 1806 1807 1808
	u32 max_resp_sz_cached;

	/*
	 * Assumes OPEN is the biggest non-idempotent compound.
	 * 2 is the verifier.
	 */
	max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
			      RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
A
Andy Adamson 已提交
1809

1810 1811
	len = scnprintf(machine_name, sizeof(machine_name), "%s",
			clp->cl_ipaddr);
A
Andy Adamson 已提交
1812

T
Trond Myklebust 已提交
1813 1814
	encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
	p = reserve_space(xdr, 16 + 2*28 + 20 + len + 12);
1815
	p = xdr_encode_hyper(p, clp->cl_clientid);
B
Benny Halevy 已提交
1816 1817
	*p++ = cpu_to_be32(clp->cl_seqid);			/*Sequence id */
	*p++ = cpu_to_be32(args->flags);			/*flags */
A
Andy Adamson 已提交
1818 1819

	/* Fore Channel */
1820
	*p++ = cpu_to_be32(0);				/* header padding size */
B
Benny Halevy 已提交
1821 1822
	*p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz);	/* max req size */
	*p++ = cpu_to_be32(args->fc_attrs.max_resp_sz);	/* max resp size */
1823
	*p++ = cpu_to_be32(max_resp_sz_cached);		/* Max resp sz cached */
B
Benny Halevy 已提交
1824 1825 1826
	*p++ = cpu_to_be32(args->fc_attrs.max_ops);	/* max operations */
	*p++ = cpu_to_be32(args->fc_attrs.max_reqs);	/* max requests */
	*p++ = cpu_to_be32(0);				/* rdmachannel_attrs */
A
Andy Adamson 已提交
1827 1828

	/* Back Channel */
1829
	*p++ = cpu_to_be32(0);				/* header padding size */
B
Benny Halevy 已提交
1830 1831 1832 1833 1834 1835
	*p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz);	/* max req size */
	*p++ = cpu_to_be32(args->bc_attrs.max_resp_sz);	/* max resp size */
	*p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached);	/* Max resp sz cached */
	*p++ = cpu_to_be32(args->bc_attrs.max_ops);	/* max operations */
	*p++ = cpu_to_be32(args->bc_attrs.max_reqs);	/* max requests */
	*p++ = cpu_to_be32(0);				/* rdmachannel_attrs */
A
Andy Adamson 已提交
1836

B
Benny Halevy 已提交
1837 1838 1839
	*p++ = cpu_to_be32(args->cb_program);		/* cb_program */
	*p++ = cpu_to_be32(1);
	*p++ = cpu_to_be32(RPC_AUTH_UNIX);			/* auth_sys */
A
Andy Adamson 已提交
1840 1841

	/* authsys_parms rfc1831 */
1842
	*p++ = cpu_to_be32(nn->boot_time.tv_nsec);	/* stamp */
1843
	p = xdr_encode_opaque(p, machine_name, len);
B
Benny Halevy 已提交
1844 1845
	*p++ = cpu_to_be32(0);				/* UID */
	*p++ = cpu_to_be32(0);				/* GID */
1846
	*p = cpu_to_be32(0);				/* No more gids */
A
Andy Adamson 已提交
1847
}
A
Andy Adamson 已提交
1848 1849 1850 1851 1852

static void encode_destroy_session(struct xdr_stream *xdr,
				   struct nfs4_session *session,
				   struct compound_hdr *hdr)
{
T
Trond Myklebust 已提交
1853 1854
	encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
	encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
A
Andy Adamson 已提交
1855
}
1856

T
Trond Myklebust 已提交
1857 1858 1859 1860 1861 1862 1863 1864
static void encode_destroy_clientid(struct xdr_stream *xdr,
				   uint64_t clientid,
				   struct compound_hdr *hdr)
{
	encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
	encode_uint64(xdr, clientid);
}

1865 1866 1867 1868
static void encode_reclaim_complete(struct xdr_stream *xdr,
				    struct nfs41_reclaim_complete_args *args,
				    struct compound_hdr *hdr)
{
T
Trond Myklebust 已提交
1869 1870
	encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
	encode_uint32(xdr, args->one_fs);
1871
}
B
Benny Halevy 已提交
1872 1873
#endif /* CONFIG_NFS_V4_1 */

1874 1875 1876 1877 1878
static void encode_sequence(struct xdr_stream *xdr,
			    const struct nfs4_sequence_args *args,
			    struct compound_hdr *hdr)
{
#if defined(CONFIG_NFS_V4_1)
1879
	struct nfs4_session *session;
A
Andy Adamson 已提交
1880
	struct nfs4_slot_table *tp;
1881
	struct nfs4_slot *slot = args->sa_slot;
A
Andy Adamson 已提交
1882
	__be32 *p;
1883

1884 1885
	tp = slot->table;
	session = tp->session;
C
Chuck Lever 已提交
1886 1887
	if (!session)
		return;
A
Andy Adamson 已提交
1888

T
Trond Myklebust 已提交
1889
	encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
A
Andy Adamson 已提交
1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900

	/*
	 * Sessionid + seqid + slotid + max slotid + cache_this
	 */
	dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
		"max_slotid=%d cache_this=%d\n",
		__func__,
		((u32 *)session->sess_id.data)[0],
		((u32 *)session->sess_id.data)[1],
		((u32 *)session->sess_id.data)[2],
		((u32 *)session->sess_id.data)[3],
1901
		slot->seq_nr, slot->slot_nr,
A
Andy Adamson 已提交
1902
		tp->highest_used_slotid, args->sa_cache_this);
T
Trond Myklebust 已提交
1903
	p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
B
Benny Halevy 已提交
1904
	p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
B
Benny Halevy 已提交
1905
	*p++ = cpu_to_be32(slot->seq_nr);
1906
	*p++ = cpu_to_be32(slot->slot_nr);
B
Benny Halevy 已提交
1907
	*p++ = cpu_to_be32(tp->highest_used_slotid);
1908
	*p = cpu_to_be32(args->sa_cache_this);
1909 1910 1911
#endif /* CONFIG_NFS_V4_1 */
}

1912 1913 1914 1915 1916 1917 1918 1919
#ifdef CONFIG_NFS_V4_1
static void
encode_getdeviceinfo(struct xdr_stream *xdr,
		     const struct nfs4_getdeviceinfo_args *args,
		     struct compound_hdr *hdr)
{
	__be32 *p;

T
Trond Myklebust 已提交
1920 1921
	encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
	p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE);
1922 1923 1924
	p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
				    NFS4_DEVICEID4_SIZE);
	*p++ = cpu_to_be32(args->pdev->layout_type);
1925
	*p++ = cpu_to_be32(args->pdev->maxcount);	/* gdia_maxcount */
1926 1927 1928 1929 1930 1931 1932 1933 1934 1935
	*p++ = cpu_to_be32(0);				/* bitmap length 0 */
}

static void
encode_layoutget(struct xdr_stream *xdr,
		      const struct nfs4_layoutget_args *args,
		      struct compound_hdr *hdr)
{
	__be32 *p;

T
Trond Myklebust 已提交
1936 1937
	encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
	p = reserve_space(xdr, 36);
1938 1939 1940 1941 1942 1943
	*p++ = cpu_to_be32(0);     /* Signal layout available */
	*p++ = cpu_to_be32(args->type);
	*p++ = cpu_to_be32(args->range.iomode);
	p = xdr_encode_hyper(p, args->range.offset);
	p = xdr_encode_hyper(p, args->range.length);
	p = xdr_encode_hyper(p, args->minlength);
1944
	encode_nfs4_stateid(xdr, &args->stateid);
T
Trond Myklebust 已提交
1945
	encode_uint32(xdr, args->maxcount);
1946 1947 1948 1949 1950 1951 1952 1953 1954

	dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
		__func__,
		args->type,
		args->range.iomode,
		(unsigned long)args->range.offset,
		(unsigned long)args->range.length,
		args->maxcount);
}
A
Andy Adamson 已提交
1955 1956 1957

static int
encode_layoutcommit(struct xdr_stream *xdr,
B
Benny Halevy 已提交
1958
		    struct inode *inode,
1959
		    struct nfs4_layoutcommit_args *args,
A
Andy Adamson 已提交
1960 1961 1962 1963 1964 1965 1966
		    struct compound_hdr *hdr)
{
	__be32 *p;

	dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
		NFS_SERVER(args->inode)->pnfs_curr_ld->id);

T
Trond Myklebust 已提交
1967 1968
	encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
	p = reserve_space(xdr, 20);
A
Andy Adamson 已提交
1969 1970
	/* Only whole file layouts */
	p = xdr_encode_hyper(p, 0); /* offset */
P
Peng Tao 已提交
1971
	p = xdr_encode_hyper(p, args->lastbytewritten + 1);	/* length */
1972 1973 1974
	*p = cpu_to_be32(0); /* reclaim */
	encode_nfs4_stateid(xdr, &args->stateid);
	p = reserve_space(xdr, 20);
A
Andy Adamson 已提交
1975 1976 1977 1978
	*p++ = cpu_to_be32(1); /* newoffset = TRUE */
	p = xdr_encode_hyper(p, args->lastbytewritten);
	*p++ = cpu_to_be32(0); /* Never send time_modify_changed */
	*p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
B
Benny Halevy 已提交
1979

1980
	if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit) {
B
Benny Halevy 已提交
1981 1982
		NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
			NFS_I(inode)->layout, xdr, args);
1983 1984 1985 1986 1987 1988 1989
	} else {
		encode_uint32(xdr, args->layoutupdate_len);
		if (args->layoutupdate_pages) {
			xdr_write_pages(xdr, args->layoutupdate_pages, 0,
					args->layoutupdate_len);
		}
	}
A
Andy Adamson 已提交
1990 1991 1992

	return 0;
}
B
Benny Halevy 已提交
1993 1994 1995 1996 1997 1998 1999 2000

static void
encode_layoutreturn(struct xdr_stream *xdr,
		    const struct nfs4_layoutreturn_args *args,
		    struct compound_hdr *hdr)
{
	__be32 *p;

T
Trond Myklebust 已提交
2001 2002
	encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
	p = reserve_space(xdr, 16);
B
Benny Halevy 已提交
2003 2004 2005 2006
	*p++ = cpu_to_be32(0);		/* reclaim. always 0 for now */
	*p++ = cpu_to_be32(args->layout_type);
	*p++ = cpu_to_be32(IOMODE_ANY);
	*p = cpu_to_be32(RETURN_FILE);
2007
	p = reserve_space(xdr, 16);
B
Benny Halevy 已提交
2008 2009 2010
	p = xdr_encode_hyper(p, 0);
	p = xdr_encode_hyper(p, NFS4_MAX_UINT64);
	spin_lock(&args->inode->i_lock);
2011
	encode_nfs4_stateid(xdr, &args->stateid);
B
Benny Halevy 已提交
2012
	spin_unlock(&args->inode->i_lock);
A
Andy Adamson 已提交
2013 2014 2015
	if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
		NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
			NFS_I(args->inode)->layout, xdr, args);
T
Trond Myklebust 已提交
2016 2017
	} else
		encode_uint32(xdr, 0);
B
Benny Halevy 已提交
2018
}
2019 2020 2021 2022 2023 2024

static int
encode_secinfo_no_name(struct xdr_stream *xdr,
		       const struct nfs41_secinfo_no_name_args *args,
		       struct compound_hdr *hdr)
{
T
Trond Myklebust 已提交
2025 2026
	encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
	encode_uint32(xdr, args->style);
2027 2028
	return 0;
}
B
Bryan Schumaker 已提交
2029 2030 2031 2032 2033

static void encode_test_stateid(struct xdr_stream *xdr,
				struct nfs41_test_stateid_args *args,
				struct compound_hdr *hdr)
{
T
Trond Myklebust 已提交
2034 2035
	encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
	encode_uint32(xdr, 1);
2036
	encode_nfs4_stateid(xdr, args->stateid);
B
Bryan Schumaker 已提交
2037
}
B
Bryan Schumaker 已提交
2038 2039 2040 2041 2042

static void encode_free_stateid(struct xdr_stream *xdr,
				struct nfs41_free_stateid_args *args,
				struct compound_hdr *hdr)
{
T
Trond Myklebust 已提交
2043
	encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
2044
	encode_nfs4_stateid(xdr, &args->stateid);
B
Bryan Schumaker 已提交
2045
}
2046 2047
#endif /* CONFIG_NFS_V4_1 */

L
Linus Torvalds 已提交
2048 2049 2050 2051
/*
 * END OF "GENERIC" ENCODE ROUTINES.
 */

2052 2053 2054
static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
{
#if defined(CONFIG_NFS_V4_1)
C
Chuck Lever 已提交
2055 2056 2057
	struct nfs4_session *session = args->sa_slot->table->session;
	if (session)
		return session->clp->cl_mvops->minor_version;
2058 2059 2060 2061
#endif /* CONFIG_NFS_V4_1 */
	return 0;
}

L
Linus Torvalds 已提交
2062 2063 2064
/*
 * Encode an ACCESS request
 */
2065 2066
static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
				const struct nfs4_accessargs *args)
L
Linus Torvalds 已提交
2067 2068
{
	struct compound_hdr hdr = {
2069
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2070 2071
	};

2072 2073 2074 2075 2076
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_access(xdr, args->access, &hdr);
	encode_getfattr(xdr, args->bitmask, &hdr);
2077
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2078 2079 2080 2081 2082
}

/*
 * Encode LOOKUP request
 */
2083 2084
static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
				const struct nfs4_lookup_arg *args)
L
Linus Torvalds 已提交
2085 2086
{
	struct compound_hdr hdr = {
2087
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2088 2089
	};

2090 2091 2092 2093 2094 2095
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->dir_fh, &hdr);
	encode_lookup(xdr, args->name, &hdr);
	encode_getfh(xdr, &hdr);
	encode_getfattr(xdr, args->bitmask, &hdr);
2096
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2097 2098 2099 2100 2101
}

/*
 * Encode LOOKUP_ROOT request
 */
2102 2103 2104
static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
				     struct xdr_stream *xdr,
				     const struct nfs4_lookup_root_arg *args)
L
Linus Torvalds 已提交
2105 2106
{
	struct compound_hdr hdr = {
2107
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2108 2109
	};

2110 2111 2112 2113 2114
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putrootfh(xdr, &hdr);
	encode_getfh(xdr, &hdr);
	encode_getfattr(xdr, args->bitmask, &hdr);
2115
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2116 2117 2118 2119 2120
}

/*
 * Encode REMOVE request
 */
2121 2122
static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
				const struct nfs_removeargs *args)
L
Linus Torvalds 已提交
2123 2124
{
	struct compound_hdr hdr = {
2125
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2126 2127
	};

2128 2129 2130 2131
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_remove(xdr, &args->name, &hdr);
2132
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2133 2134 2135 2136 2137
}

/*
 * Encode RENAME request
 */
2138 2139
static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
				const struct nfs_renameargs *args)
L
Linus Torvalds 已提交
2140 2141
{
	struct compound_hdr hdr = {
2142
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2143 2144
	};

2145 2146 2147 2148 2149 2150
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->old_dir, &hdr);
	encode_savefh(xdr, &hdr);
	encode_putfh(xdr, args->new_dir, &hdr);
	encode_rename(xdr, args->old_name, args->new_name, &hdr);
2151
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2152 2153 2154 2155 2156
}

/*
 * Encode LINK request
 */
2157 2158
static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
			     const struct nfs4_link_arg *args)
L
Linus Torvalds 已提交
2159 2160
{
	struct compound_hdr hdr = {
2161
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2162 2163
	};

2164 2165 2166 2167 2168 2169 2170 2171
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_savefh(xdr, &hdr);
	encode_putfh(xdr, args->dir_fh, &hdr);
	encode_link(xdr, args->name, &hdr);
	encode_restorefh(xdr, &hdr);
	encode_getfattr(xdr, args->bitmask, &hdr);
2172
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2173 2174 2175 2176 2177
}

/*
 * Encode CREATE request
 */
2178 2179
static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
				const struct nfs4_create_arg *args)
L
Linus Torvalds 已提交
2180 2181
{
	struct compound_hdr hdr = {
2182
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2183 2184
	};

2185 2186 2187 2188 2189 2190
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->dir_fh, &hdr);
	encode_create(xdr, args, &hdr);
	encode_getfh(xdr, &hdr);
	encode_getfattr(xdr, args->bitmask, &hdr);
2191
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2192 2193 2194 2195 2196
}

/*
 * Encode SYMLINK request
 */
2197 2198
static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
				 const struct nfs4_create_arg *args)
L
Linus Torvalds 已提交
2199
{
2200
	nfs4_xdr_enc_create(req, xdr, args);
L
Linus Torvalds 已提交
2201 2202 2203 2204 2205
}

/*
 * Encode GETATTR request
 */
2206 2207
static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
				 const struct nfs4_getattr_arg *args)
L
Linus Torvalds 已提交
2208 2209
{
	struct compound_hdr hdr = {
2210
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2211 2212
	};

2213 2214 2215 2216
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_getfattr(xdr, args->bitmask, &hdr);
2217
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2218 2219 2220 2221 2222
}

/*
 * Encode a CLOSE request
 */
2223 2224
static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
			       struct nfs_closeargs *args)
L
Linus Torvalds 已提交
2225
{
A
Andy Adamson 已提交
2226
	struct compound_hdr hdr = {
2227
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
A
Andy Adamson 已提交
2228 2229
	};

2230 2231 2232 2233 2234
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_close(xdr, args, &hdr);
	encode_getfattr(xdr, args->bitmask, &hdr);
2235
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2236 2237 2238 2239 2240
}

/*
 * Encode an OPEN request
 */
2241 2242
static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
			      struct nfs_openargs *args)
L
Linus Torvalds 已提交
2243 2244
{
	struct compound_hdr hdr = {
2245
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2246 2247
	};

2248 2249 2250 2251 2252
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_open(xdr, args, &hdr);
	encode_getfh(xdr, &hdr);
2253 2254
	if (args->access)
		encode_access(xdr, args->access, &hdr);
2255
	encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2256
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2257 2258 2259 2260 2261
}

/*
 * Encode an OPEN_CONFIRM request
 */
2262 2263 2264
static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
				      struct xdr_stream *xdr,
				      struct nfs_open_confirmargs *args)
L
Linus Torvalds 已提交
2265 2266
{
	struct compound_hdr hdr = {
2267
		.nops   = 0,
L
Linus Torvalds 已提交
2268 2269
	};

2270 2271 2272
	encode_compound_hdr(xdr, req, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_open_confirm(xdr, args, &hdr);
2273
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2274 2275 2276 2277 2278
}

/*
 * Encode an OPEN request with no attributes.
 */
2279 2280 2281
static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
				     struct xdr_stream *xdr,
				     struct nfs_openargs *args)
L
Linus Torvalds 已提交
2282 2283
{
	struct compound_hdr hdr = {
2284
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2285 2286
	};

2287 2288 2289 2290
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_open(xdr, args, &hdr);
2291 2292
	if (args->access)
		encode_access(xdr, args->access, &hdr);
2293
	encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
2294
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2295 2296 2297 2298 2299
}

/*
 * Encode an OPEN_DOWNGRADE request
 */
2300 2301 2302
static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
					struct xdr_stream *xdr,
					struct nfs_closeargs *args)
L
Linus Torvalds 已提交
2303 2304
{
	struct compound_hdr hdr = {
2305
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2306 2307
	};

2308 2309 2310 2311 2312
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_open_downgrade(xdr, args, &hdr);
	encode_getfattr(xdr, args->bitmask, &hdr);
2313
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2314 2315 2316 2317 2318
}

/*
 * Encode a LOCK request
 */
2319 2320
static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
			      struct nfs_lock_args *args)
L
Linus Torvalds 已提交
2321 2322
{
	struct compound_hdr hdr = {
2323
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2324 2325
	};

2326 2327 2328 2329
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_lock(xdr, args, &hdr);
2330
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2331 2332 2333 2334 2335
}

/*
 * Encode a LOCKT request
 */
2336 2337
static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
			       struct nfs_lockt_args *args)
L
Linus Torvalds 已提交
2338 2339
{
	struct compound_hdr hdr = {
2340
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2341 2342
	};

2343 2344 2345 2346
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_lockt(xdr, args, &hdr);
2347
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2348 2349 2350 2351 2352
}

/*
 * Encode a LOCKU request
 */
2353 2354
static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
			       struct nfs_locku_args *args)
L
Linus Torvalds 已提交
2355 2356
{
	struct compound_hdr hdr = {
2357
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2358 2359
	};

2360 2361 2362 2363
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_locku(xdr, args, &hdr);
2364
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2365 2366
}

2367 2368 2369
static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
					   struct xdr_stream *xdr,
					struct nfs_release_lockowner_args *args)
2370 2371 2372 2373 2374
{
	struct compound_hdr hdr = {
		.minorversion = 0,
	};

2375 2376
	encode_compound_hdr(xdr, req, &hdr);
	encode_release_lockowner(xdr, &args->lock_owner, &hdr);
2377 2378 2379
	encode_nops(&hdr);
}

L
Linus Torvalds 已提交
2380 2381 2382
/*
 * Encode a READLINK request
 */
2383 2384
static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
				  const struct nfs4_readlink *args)
L
Linus Torvalds 已提交
2385 2386
{
	struct compound_hdr hdr = {
2387
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2388 2389
	};

2390 2391 2392 2393
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_readlink(xdr, args, req, &hdr);
2394

2395
	xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2396
			args->pgbase, args->pglen);
2397
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2398 2399 2400 2401 2402
}

/*
 * Encode a READDIR request
 */
2403 2404
static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
				 const struct nfs4_readdir_arg *args)
L
Linus Torvalds 已提交
2405 2406
{
	struct compound_hdr hdr = {
2407
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2408 2409
	};

2410 2411 2412 2413
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_readdir(xdr, args, req, &hdr);
2414

2415
	xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
2416 2417
			 args->pgbase, args->count);
	dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
2418
			__func__, hdr.replen << 2, args->pages,
2419
			args->pgbase, args->count);
2420
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2421 2422 2423 2424 2425
}

/*
 * Encode a READ request
 */
2426
static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
2427
			      struct nfs_pgio_args *args)
L
Linus Torvalds 已提交
2428 2429
{
	struct compound_hdr hdr = {
2430
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2431 2432
	};

2433 2434 2435 2436
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_read(xdr, args, &hdr);
L
Linus Torvalds 已提交
2437

2438
	xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
L
Linus Torvalds 已提交
2439
			 args->pages, args->pgbase, args->count);
2440
	req->rq_rcv_buf.flags |= XDRBUF_READ;
2441
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2442 2443 2444 2445 2446
}

/*
 * Encode an SETATTR request
 */
2447 2448
static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
				 struct nfs_setattrargs *args)
L
Linus Torvalds 已提交
2449
{
A
Andy Adamson 已提交
2450
	struct compound_hdr hdr = {
2451
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
A
Andy Adamson 已提交
2452 2453
	};

2454 2455 2456 2457 2458
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_setattr(xdr, args, args->server, &hdr);
	encode_getfattr(xdr, args->bitmask, &hdr);
2459
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2460 2461
}

2462 2463 2464
/*
 * Encode a GETACL request
 */
2465 2466
static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
				struct nfs_getaclargs *args)
2467 2468
{
	struct compound_hdr hdr = {
2469
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
2470
	};
2471
	uint32_t replen;
2472

2473 2474 2475
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
2476
	replen = hdr.replen + op_decode_hdr_maxsz + 1;
2477
	encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
2478

2479
	xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
2480
		args->acl_pages, args->acl_pgbase, args->acl_len);
2481

2482
	encode_nops(&hdr);
2483 2484
}

L
Linus Torvalds 已提交
2485 2486 2487
/*
 * Encode a WRITE request
 */
2488
static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
2489
			       struct nfs_pgio_args *args)
L
Linus Torvalds 已提交
2490 2491
{
	struct compound_hdr hdr = {
2492
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2493 2494
	};

2495 2496 2497 2498
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_write(xdr, args, &hdr);
2499
	req->rq_snd_buf.flags |= XDRBUF_WRITE;
2500 2501
	if (args->bitmask)
		encode_getfattr(xdr, args->bitmask, &hdr);
2502
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2503 2504 2505 2506 2507
}

/*
 *  a COMMIT request
 */
2508
static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
2509
				struct nfs_commitargs *args)
L
Linus Torvalds 已提交
2510 2511
{
	struct compound_hdr hdr = {
2512
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2513 2514
	};

2515 2516 2517 2518
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_commit(xdr, args, &hdr);
2519
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2520 2521 2522 2523 2524
}

/*
 * FSINFO request
 */
2525 2526
static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
				struct nfs4_fsinfo_arg *args)
L
Linus Torvalds 已提交
2527 2528
{
	struct compound_hdr hdr = {
2529
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2530 2531
	};

2532 2533 2534 2535
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_fsinfo(xdr, args->bitmask, &hdr);
2536
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2537 2538 2539 2540 2541
}

/*
 * a PATHCONF request
 */
2542 2543
static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
				  const struct nfs4_pathconf_arg *args)
L
Linus Torvalds 已提交
2544 2545
{
	struct compound_hdr hdr = {
2546
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2547 2548
	};

2549 2550 2551 2552
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2553
			   &hdr);
2554
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2555 2556 2557 2558 2559
}

/*
 * a STATFS request
 */
2560 2561
static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
				const struct nfs4_statfs_arg *args)
L
Linus Torvalds 已提交
2562 2563
{
	struct compound_hdr hdr = {
2564
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2565 2566
	};

2567 2568 2569 2570
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2571
			   args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
2572
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2573 2574 2575 2576 2577
}

/*
 * GETATTR_BITMAP request
 */
2578 2579 2580
static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
				     struct xdr_stream *xdr,
				     struct nfs4_server_caps_arg *args)
L
Linus Torvalds 已提交
2581 2582
{
	struct compound_hdr hdr = {
2583
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2584 2585
	};

2586 2587 2588 2589
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fhandle, &hdr);
	encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2590
			   FATTR4_WORD0_FH_EXPIRE_TYPE|
2591 2592 2593
			   FATTR4_WORD0_LINK_SUPPORT|
			   FATTR4_WORD0_SYMLINK_SUPPORT|
			   FATTR4_WORD0_ACLSUPPORT, &hdr);
2594
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2595 2596 2597 2598 2599
}

/*
 * a RENEW request
 */
2600 2601
static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
			       struct nfs_client *clp)
L
Linus Torvalds 已提交
2602 2603
{
	struct compound_hdr hdr = {
2604
		.nops	= 0,
L
Linus Torvalds 已提交
2605 2606
	};

2607
	encode_compound_hdr(xdr, req, &hdr);
2608
	encode_renew(xdr, clp->cl_clientid, &hdr);
2609
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2610 2611 2612 2613 2614
}

/*
 * a SETCLIENTID request
 */
2615 2616 2617
static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
				     struct xdr_stream *xdr,
				     struct nfs4_setclientid *sc)
L
Linus Torvalds 已提交
2618 2619
{
	struct compound_hdr hdr = {
2620
		.nops	= 0,
L
Linus Torvalds 已提交
2621 2622
	};

2623 2624
	encode_compound_hdr(xdr, req, &hdr);
	encode_setclientid(xdr, sc, &hdr);
2625
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2626 2627 2628 2629 2630
}

/*
 * a SETCLIENTID_CONFIRM request
 */
2631 2632 2633
static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
					     struct xdr_stream *xdr,
					     struct nfs4_setclientid_res *arg)
L
Linus Torvalds 已提交
2634 2635
{
	struct compound_hdr hdr = {
2636
		.nops	= 0,
L
Linus Torvalds 已提交
2637 2638
	};

2639 2640
	encode_compound_hdr(xdr, req, &hdr);
	encode_setclientid_confirm(xdr, arg, &hdr);
2641
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2642 2643 2644 2645 2646
}

/*
 * DELEGRETURN request
 */
2647 2648 2649
static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
				     struct xdr_stream *xdr,
				     const struct nfs4_delegreturnargs *args)
L
Linus Torvalds 已提交
2650 2651
{
	struct compound_hdr hdr = {
2652
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
L
Linus Torvalds 已提交
2653 2654
	};

2655 2656 2657 2658
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fhandle, &hdr);
	encode_getfattr(xdr, args->bitmask, &hdr);
2659
	encode_delegreturn(xdr, args->stateid, &hdr);
2660
	encode_nops(&hdr);
L
Linus Torvalds 已提交
2661 2662
}

2663 2664 2665
/*
 * Encode FS_LOCATIONS request
 */
2666 2667 2668
static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
				      struct xdr_stream *xdr,
				      struct nfs4_fs_locations_arg *args)
2669 2670
{
	struct compound_hdr hdr = {
2671
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
2672
	};
2673
	uint32_t replen;
2674

2675 2676
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688
	if (args->migration) {
		encode_putfh(xdr, args->fh, &hdr);
		replen = hdr.replen;
		encode_fs_locations(xdr, args->bitmask, &hdr);
		if (args->renew)
			encode_renew(xdr, args->clientid, &hdr);
	} else {
		encode_putfh(xdr, args->dir_fh, &hdr);
		encode_lookup(xdr, args->name, &hdr);
		replen = hdr.replen;
		encode_fs_locations(xdr, args->bitmask, &hdr);
	}
2689

2690
	/* Set up reply kvec to capture returned fs_locations array. */
2691
	xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
2692
			0, PAGE_SIZE);
2693
	encode_nops(&hdr);
2694 2695
}

B
Bryan Schumaker 已提交
2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713
/*
 * Encode SECINFO request
 */
static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
				struct xdr_stream *xdr,
				struct nfs4_secinfo_arg *args)
{
	struct compound_hdr hdr = {
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	};

	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->dir_fh, &hdr);
	encode_secinfo(xdr, args->name, &hdr);
	encode_nops(&hdr);
}

2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733
/*
 * Encode FSID_PRESENT request
 */
static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req,
				      struct xdr_stream *xdr,
				      struct nfs4_fsid_present_arg *args)
{
	struct compound_hdr hdr = {
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	};

	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_getfh(xdr, &hdr);
	if (args->renew)
		encode_renew(xdr, args->clientid, &hdr);
	encode_nops(&hdr);
}

B
Benny Halevy 已提交
2734
#if defined(CONFIG_NFS_V4_1)
2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750
/*
 * BIND_CONN_TO_SESSION request
 */
static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
				struct xdr_stream *xdr,
				struct nfs_client *clp)
{
	struct compound_hdr hdr = {
		.minorversion = clp->cl_mvops->minor_version,
	};

	encode_compound_hdr(xdr, req, &hdr);
	encode_bind_conn_to_session(xdr, clp->cl_session, &hdr);
	encode_nops(&hdr);
}

B
Benny Halevy 已提交
2751 2752 2753
/*
 * EXCHANGE_ID request
 */
2754 2755 2756
static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
				     struct xdr_stream *xdr,
				     struct nfs41_exchange_id_args *args)
B
Benny Halevy 已提交
2757 2758
{
	struct compound_hdr hdr = {
2759
		.minorversion = args->client->cl_mvops->minor_version,
B
Benny Halevy 已提交
2760 2761
	};

2762 2763
	encode_compound_hdr(xdr, req, &hdr);
	encode_exchange_id(xdr, args, &hdr);
B
Benny Halevy 已提交
2764 2765
	encode_nops(&hdr);
}
A
Andy Adamson 已提交
2766

A
Andy Adamson 已提交
2767 2768 2769
/*
 * a CREATE_SESSION request
 */
2770 2771 2772
static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
					struct xdr_stream *xdr,
					struct nfs41_create_session_args *args)
A
Andy Adamson 已提交
2773 2774
{
	struct compound_hdr hdr = {
2775
		.minorversion = args->client->cl_mvops->minor_version,
A
Andy Adamson 已提交
2776 2777
	};

2778 2779
	encode_compound_hdr(xdr, req, &hdr);
	encode_create_session(xdr, args, &hdr);
A
Andy Adamson 已提交
2780 2781 2782
	encode_nops(&hdr);
}

A
Andy Adamson 已提交
2783 2784 2785
/*
 * a DESTROY_SESSION request
 */
2786 2787 2788
static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
					 struct xdr_stream *xdr,
					 struct nfs4_session *session)
A
Andy Adamson 已提交
2789 2790
{
	struct compound_hdr hdr = {
2791
		.minorversion = session->clp->cl_mvops->minor_version,
A
Andy Adamson 已提交
2792 2793
	};

2794 2795
	encode_compound_hdr(xdr, req, &hdr);
	encode_destroy_session(xdr, session, &hdr);
A
Andy Adamson 已提交
2796 2797 2798
	encode_nops(&hdr);
}

T
Trond Myklebust 已提交
2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814
/*
 * a DESTROY_CLIENTID request
 */
static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
					 struct xdr_stream *xdr,
					 struct nfs_client *clp)
{
	struct compound_hdr hdr = {
		.minorversion = clp->cl_mvops->minor_version,
	};

	encode_compound_hdr(xdr, req, &hdr);
	encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
	encode_nops(&hdr);
}

A
Andy Adamson 已提交
2815 2816 2817
/*
 * a SEQUENCE request
 */
2818 2819
static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
				  struct nfs4_sequence_args *args)
A
Andy Adamson 已提交
2820 2821 2822 2823 2824
{
	struct compound_hdr hdr = {
		.minorversion = nfs4_xdr_minorversion(args),
	};

2825 2826
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, args, &hdr);
A
Andy Adamson 已提交
2827 2828 2829
	encode_nops(&hdr);
}

A
Andy Adamson 已提交
2830 2831 2832
/*
 * a GET_LEASE_TIME request
 */
2833 2834 2835
static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
					struct xdr_stream *xdr,
					struct nfs4_get_lease_time_args *args)
A
Andy Adamson 已提交
2836 2837 2838 2839
{
	struct compound_hdr hdr = {
		.minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
	};
2840
	const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
A
Andy Adamson 已提交
2841

2842 2843 2844 2845
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->la_seq_args, &hdr);
	encode_putrootfh(xdr, &hdr);
	encode_fsinfo(xdr, lease_bitmap, &hdr);
A
Andy Adamson 已提交
2846 2847
	encode_nops(&hdr);
}
2848 2849 2850 2851

/*
 * a RECLAIM_COMPLETE request
 */
2852 2853 2854
static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
					  struct xdr_stream *xdr,
				struct nfs41_reclaim_complete_args *args)
2855 2856 2857 2858 2859
{
	struct compound_hdr hdr = {
		.minorversion = nfs4_xdr_minorversion(&args->seq_args)
	};

2860 2861 2862
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_reclaim_complete(xdr, args, &hdr);
2863 2864 2865
	encode_nops(&hdr);
}

2866 2867 2868
/*
 * Encode GETDEVICEINFO request
 */
2869 2870 2871
static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
				       struct xdr_stream *xdr,
				       struct nfs4_getdeviceinfo_args *args)
2872 2873 2874 2875 2876
{
	struct compound_hdr hdr = {
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	};

2877 2878 2879
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_getdeviceinfo(xdr, args, &hdr);
2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892

	/* set up reply kvec. Subtract notification bitmap max size (2)
	 * so that notification bitmap is put in xdr_buf tail */
	xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
			 args->pdev->pages, args->pdev->pgbase,
			 args->pdev->pglen);

	encode_nops(&hdr);
}

/*
 *  Encode LAYOUTGET request
 */
2893 2894 2895
static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
				   struct xdr_stream *xdr,
				   struct nfs4_layoutget_args *args)
2896 2897 2898 2899 2900
{
	struct compound_hdr hdr = {
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	};

2901 2902 2903 2904
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, NFS_FH(args->inode), &hdr);
	encode_layoutget(xdr, args, &hdr);
2905 2906 2907 2908

	xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
	    args->layout.pages, 0, args->layout.pglen);

2909 2910
	encode_nops(&hdr);
}
A
Andy Adamson 已提交
2911 2912 2913 2914

/*
 *  Encode LAYOUTCOMMIT request
 */
B
Benny Halevy 已提交
2915 2916 2917
static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
				      struct xdr_stream *xdr,
				      struct nfs4_layoutcommit_args *args)
A
Andy Adamson 已提交
2918
{
B
Benny Halevy 已提交
2919 2920
	struct nfs4_layoutcommit_data *data =
		container_of(args, struct nfs4_layoutcommit_data, args);
A
Andy Adamson 已提交
2921 2922 2923 2924 2925 2926 2927
	struct compound_hdr hdr = {
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	};

	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, NFS_FH(args->inode), &hdr);
B
Benny Halevy 已提交
2928
	encode_layoutcommit(xdr, data->args.inode, args, &hdr);
A
Andy Adamson 已提交
2929
	encode_getfattr(xdr, args->bitmask, &hdr);
2930
	encode_nops(&hdr);
B
Benny Halevy 已提交
2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948
}

/*
 * Encode LAYOUTRETURN request
 */
static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
				      struct xdr_stream *xdr,
				      struct nfs4_layoutreturn_args *args)
{
	struct compound_hdr hdr = {
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	};

	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, NFS_FH(args->inode), &hdr);
	encode_layoutreturn(xdr, args, &hdr);
	encode_nops(&hdr);
2949
}
2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968

/*
 * Encode SECINFO_NO_NAME request
 */
static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
					struct xdr_stream *xdr,
					struct nfs41_secinfo_no_name_args *args)
{
	struct compound_hdr hdr = {
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	};

	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putrootfh(xdr, &hdr);
	encode_secinfo_no_name(xdr, args, &hdr);
	encode_nops(&hdr);
	return 0;
}
B
Bryan Schumaker 已提交
2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985

/*
 *  Encode TEST_STATEID request
 */
static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
				      struct xdr_stream *xdr,
				      struct nfs41_test_stateid_args *args)
{
	struct compound_hdr hdr = {
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	};

	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_test_stateid(xdr, args, &hdr);
	encode_nops(&hdr);
}
B
Bryan Schumaker 已提交
2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002

/*
 *  Encode FREE_STATEID request
 */
static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
				     struct xdr_stream *xdr,
				     struct nfs41_free_stateid_args *args)
{
	struct compound_hdr hdr = {
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
	};

	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_free_stateid(xdr, args, &hdr);
	encode_nops(&hdr);
}
B
Benny Halevy 已提交
3003 3004
#endif /* CONFIG_NFS_V4_1 */

3005 3006 3007 3008 3009 3010
static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
{
	dprintk("nfs: %s: prematurely hit end of receive buffer. "
		"Remaining buffer length is %tu words.\n",
		func, xdr->end - xdr->p);
}
L
Linus Torvalds 已提交
3011

3012
static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
L
Linus Torvalds 已提交
3013
{
A
Al Viro 已提交
3014
	__be32 *p;
L
Linus Torvalds 已提交
3015

B
Benny Halevy 已提交
3016 3017 3018
	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
3019
	*len = be32_to_cpup(p);
B
Benny Halevy 已提交
3020 3021 3022
	p = xdr_inline_decode(xdr, *len);
	if (unlikely(!p))
		goto out_overflow;
L
Linus Torvalds 已提交
3023 3024
	*string = (char *)p;
	return 0;
B
Benny Halevy 已提交
3025 3026 3027
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3028 3029 3030 3031
}

static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
{
A
Al Viro 已提交
3032
	__be32 *p;
L
Linus Torvalds 已提交
3033

B
Benny Halevy 已提交
3034 3035 3036
	p = xdr_inline_decode(xdr, 8);
	if (unlikely(!p))
		goto out_overflow;
B
Benny Halevy 已提交
3037
	hdr->status = be32_to_cpup(p++);
3038
	hdr->taglen = be32_to_cpup(p);
3039

B
Benny Halevy 已提交
3040 3041 3042
	p = xdr_inline_decode(xdr, hdr->taglen + 4);
	if (unlikely(!p))
		goto out_overflow;
L
Linus Torvalds 已提交
3043 3044
	hdr->tag = (char *)p;
	p += XDR_QUADLEN(hdr->taglen);
3045
	hdr->nops = be32_to_cpup(p);
3046 3047
	if (unlikely(hdr->nops < 1))
		return nfs4_stat_to_errno(hdr->status);
L
Linus Torvalds 已提交
3048
	return 0;
B
Benny Halevy 已提交
3049 3050 3051
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3052 3053
}

3054 3055
static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
		int *nfs_retval)
L
Linus Torvalds 已提交
3056
{
A
Al Viro 已提交
3057
	__be32 *p;
L
Linus Torvalds 已提交
3058 3059 3060
	uint32_t opnum;
	int32_t nfserr;

B
Benny Halevy 已提交
3061 3062 3063
	p = xdr_inline_decode(xdr, 8);
	if (unlikely(!p))
		goto out_overflow;
B
Benny Halevy 已提交
3064
	opnum = be32_to_cpup(p++);
3065 3066
	if (unlikely(opnum != expected))
		goto out_bad_operation;
3067
	nfserr = be32_to_cpup(p);
3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078
	if (nfserr == NFS_OK)
		*nfs_retval = 0;
	else
		*nfs_retval = nfs4_stat_to_errno(nfserr);
	return true;
out_bad_operation:
	dprintk("nfs: Server returned operation"
		" %d but we issued a request for %d\n",
			opnum, expected);
	*nfs_retval = -EREMOTEIO;
	return false;
B
Benny Halevy 已提交
3079 3080
out_overflow:
	print_overflow_msg(__func__, xdr);
3081 3082 3083 3084 3085 3086 3087 3088 3089 3090
	*nfs_retval = -EIO;
	return false;
}

static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
{
	int retval;

	__decode_op_hdr(xdr, expected, &retval);
	return retval;
L
Linus Torvalds 已提交
3091 3092 3093
}

/* Dummy routine */
3094
static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
L
Linus Torvalds 已提交
3095
{
A
Al Viro 已提交
3096
	__be32 *p;
3097
	unsigned int strlen;
L
Linus Torvalds 已提交
3098 3099
	char *str;

B
Benny Halevy 已提交
3100 3101 3102 3103 3104
	p = xdr_inline_decode(xdr, 12);
	if (likely(p))
		return decode_opaque_inline(xdr, &strlen, &str);
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3105 3106 3107 3108
}

static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
{
A
Al Viro 已提交
3109 3110
	uint32_t bmlen;
	__be32 *p;
L
Linus Torvalds 已提交
3111

B
Benny Halevy 已提交
3112 3113 3114
	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
3115
	bmlen = be32_to_cpup(p);
L
Linus Torvalds 已提交
3116

3117
	bitmap[0] = bitmap[1] = bitmap[2] = 0;
B
Benny Halevy 已提交
3118 3119 3120
	p = xdr_inline_decode(xdr, (bmlen << 2));
	if (unlikely(!p))
		goto out_overflow;
L
Linus Torvalds 已提交
3121
	if (bmlen > 0) {
B
Benny Halevy 已提交
3122
		bitmap[0] = be32_to_cpup(p++);
3123 3124 3125 3126 3127
		if (bmlen > 1) {
			bitmap[1] = be32_to_cpup(p++);
			if (bmlen > 2)
				bitmap[2] = be32_to_cpup(p);
		}
L
Linus Torvalds 已提交
3128 3129
	}
	return 0;
B
Benny Halevy 已提交
3130 3131 3132
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3133 3134
}

3135
static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
L
Linus Torvalds 已提交
3136
{
A
Al Viro 已提交
3137
	__be32 *p;
L
Linus Torvalds 已提交
3138

B
Benny Halevy 已提交
3139 3140 3141
	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
3142
	*attrlen = be32_to_cpup(p);
3143
	*savep = xdr_stream_pos(xdr);
L
Linus Torvalds 已提交
3144
	return 0;
B
Benny Halevy 已提交
3145 3146 3147
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3148 3149 3150 3151 3152
}

static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
{
	if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
R
Roman Borisov 已提交
3153 3154 3155 3156
		int ret;
		ret = decode_attr_bitmap(xdr, bitmask);
		if (unlikely(ret < 0))
			return ret;
L
Linus Torvalds 已提交
3157 3158
		bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
	} else
3159 3160 3161
		bitmask[0] = bitmask[1] = bitmask[2] = 0;
	dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
		bitmask[0], bitmask[1], bitmask[2]);
L
Linus Torvalds 已提交
3162 3163 3164 3165 3166
	return 0;
}

static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
{
A
Al Viro 已提交
3167
	__be32 *p;
3168
	int ret = 0;
L
Linus Torvalds 已提交
3169 3170 3171 3172 3173

	*type = 0;
	if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
B
Benny Halevy 已提交
3174 3175 3176
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
3177
		*type = be32_to_cpup(p);
L
Linus Torvalds 已提交
3178
		if (*type < NF4REG || *type > NF4NAMEDATTR) {
3179
			dprintk("%s: bad type %d\n", __func__, *type);
L
Linus Torvalds 已提交
3180 3181 3182
			return -EIO;
		}
		bitmap[0] &= ~FATTR4_WORD0_TYPE;
3183
		ret = NFS_ATTR_FATTR_TYPE;
L
Linus Torvalds 已提交
3184
	}
3185
	dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
3186
	return ret;
B
Benny Halevy 已提交
3187 3188 3189
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3190 3191
}

3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213
static int decode_attr_fh_expire_type(struct xdr_stream *xdr,
				      uint32_t *bitmap, uint32_t *type)
{
	__be32 *p;

	*type = 0;
	if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
		*type = be32_to_cpup(p);
		bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
	}
	dprintk("%s: expire type=0x%x\n", __func__, *type);
	return 0;
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
}

L
Linus Torvalds 已提交
3214 3215
static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
{
A
Al Viro 已提交
3216
	__be32 *p;
3217
	int ret = 0;
L
Linus Torvalds 已提交
3218 3219 3220 3221 3222

	*change = 0;
	if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
B
Benny Halevy 已提交
3223 3224 3225
		p = xdr_inline_decode(xdr, 8);
		if (unlikely(!p))
			goto out_overflow;
3226
		xdr_decode_hyper(p, change);
L
Linus Torvalds 已提交
3227
		bitmap[0] &= ~FATTR4_WORD0_CHANGE;
3228
		ret = NFS_ATTR_FATTR_CHANGE;
L
Linus Torvalds 已提交
3229
	}
3230
	dprintk("%s: change attribute=%Lu\n", __func__,
L
Linus Torvalds 已提交
3231
			(unsigned long long)*change);
3232
	return ret;
B
Benny Halevy 已提交
3233 3234 3235
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3236 3237 3238 3239
}

static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
{
A
Al Viro 已提交
3240
	__be32 *p;
3241
	int ret = 0;
L
Linus Torvalds 已提交
3242 3243 3244 3245 3246

	*size = 0;
	if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
B
Benny Halevy 已提交
3247 3248 3249
		p = xdr_inline_decode(xdr, 8);
		if (unlikely(!p))
			goto out_overflow;
3250
		xdr_decode_hyper(p, size);
L
Linus Torvalds 已提交
3251
		bitmap[0] &= ~FATTR4_WORD0_SIZE;
3252
		ret = NFS_ATTR_FATTR_SIZE;
L
Linus Torvalds 已提交
3253
	}
3254
	dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
3255
	return ret;
B
Benny Halevy 已提交
3256 3257 3258
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3259 3260 3261 3262
}

static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
A
Al Viro 已提交
3263
	__be32 *p;
L
Linus Torvalds 已提交
3264 3265 3266 3267 3268

	*res = 0;
	if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
B
Benny Halevy 已提交
3269 3270 3271
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
3272
		*res = be32_to_cpup(p);
L
Linus Torvalds 已提交
3273 3274
		bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
	}
3275
	dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
L
Linus Torvalds 已提交
3276
	return 0;
B
Benny Halevy 已提交
3277 3278 3279
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3280 3281 3282 3283
}

static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
A
Al Viro 已提交
3284
	__be32 *p;
L
Linus Torvalds 已提交
3285 3286 3287 3288 3289

	*res = 0;
	if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
B
Benny Halevy 已提交
3290 3291 3292
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
3293
		*res = be32_to_cpup(p);
L
Linus Torvalds 已提交
3294 3295
		bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
	}
3296
	dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
L
Linus Torvalds 已提交
3297
	return 0;
B
Benny Halevy 已提交
3298 3299 3300
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3301 3302
}

3303
static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
L
Linus Torvalds 已提交
3304
{
A
Al Viro 已提交
3305
	__be32 *p;
3306
	int ret = 0;
L
Linus Torvalds 已提交
3307 3308 3309 3310 3311 3312

	fsid->major = 0;
	fsid->minor = 0;
	if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
B
Benny Halevy 已提交
3313 3314 3315
		p = xdr_inline_decode(xdr, 16);
		if (unlikely(!p))
			goto out_overflow;
B
Benny Halevy 已提交
3316
		p = xdr_decode_hyper(p, &fsid->major);
3317
		xdr_decode_hyper(p, &fsid->minor);
L
Linus Torvalds 已提交
3318
		bitmap[0] &= ~FATTR4_WORD0_FSID;
3319
		ret = NFS_ATTR_FATTR_FSID;
L
Linus Torvalds 已提交
3320
	}
3321
	dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
L
Linus Torvalds 已提交
3322 3323
			(unsigned long long)fsid->major,
			(unsigned long long)fsid->minor);
3324
	return ret;
B
Benny Halevy 已提交
3325 3326 3327
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3328 3329 3330 3331
}

static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
A
Al Viro 已提交
3332
	__be32 *p;
L
Linus Torvalds 已提交
3333 3334 3335 3336 3337

	*res = 60;
	if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
B
Benny Halevy 已提交
3338 3339 3340
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
3341
		*res = be32_to_cpup(p);
L
Linus Torvalds 已提交
3342 3343
		bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
	}
3344
	dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
L
Linus Torvalds 已提交
3345
	return 0;
B
Benny Halevy 已提交
3346 3347 3348
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3349 3350
}

3351
static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
3352 3353 3354 3355 3356 3357 3358 3359 3360 3361
{
	__be32 *p;

	if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
		bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3362
		*res = -be32_to_cpup(p);
3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374
	}
	return 0;
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
}

static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
{
	__be32 *p;
	int len;

3375 3376
	if (fh != NULL)
		memset(fh, 0, sizeof(*fh));
3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389

	if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
		len = be32_to_cpup(p);
		if (len > NFS4_FHSIZE)
			return -EIO;
		p = xdr_inline_decode(xdr, len);
		if (unlikely(!p))
			goto out_overflow;
3390 3391 3392 3393
		if (fh != NULL) {
			memcpy(fh->data, p, len);
			fh->size = len;
		}
3394 3395 3396 3397 3398 3399 3400 3401
		bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
	}
	return 0;
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
}

L
Linus Torvalds 已提交
3402 3403
static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
A
Al Viro 已提交
3404
	__be32 *p;
L
Linus Torvalds 已提交
3405

3406
	*res = 0;
L
Linus Torvalds 已提交
3407 3408 3409
	if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
B
Benny Halevy 已提交
3410 3411 3412
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
3413
		*res = be32_to_cpup(p);
L
Linus Torvalds 已提交
3414 3415
		bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
	}
3416
	dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
L
Linus Torvalds 已提交
3417
	return 0;
B
Benny Halevy 已提交
3418 3419 3420
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3421 3422 3423 3424
}

static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
{
A
Al Viro 已提交
3425
	__be32 *p;
3426
	int ret = 0;
L
Linus Torvalds 已提交
3427 3428 3429 3430 3431

	*fileid = 0;
	if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
B
Benny Halevy 已提交
3432 3433 3434
		p = xdr_inline_decode(xdr, 8);
		if (unlikely(!p))
			goto out_overflow;
3435
		xdr_decode_hyper(p, fileid);
L
Linus Torvalds 已提交
3436
		bitmap[0] &= ~FATTR4_WORD0_FILEID;
3437
		ret = NFS_ATTR_FATTR_FILEID;
L
Linus Torvalds 已提交
3438
	}
3439
	dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3440
	return ret;
B
Benny Halevy 已提交
3441 3442 3443
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3444 3445
}

3446 3447
static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
{
A
Al Viro 已提交
3448
	__be32 *p;
3449
	int ret = 0;
3450 3451 3452 3453 3454

	*fileid = 0;
	if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
B
Benny Halevy 已提交
3455 3456 3457
		p = xdr_inline_decode(xdr, 8);
		if (unlikely(!p))
			goto out_overflow;
3458
		xdr_decode_hyper(p, fileid);
3459
		bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
3460
		ret = NFS_ATTR_FATTR_MOUNTED_ON_FILEID;
3461
	}
3462
	dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
3463
	return ret;
B
Benny Halevy 已提交
3464 3465 3466
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
3467 3468
}

L
Linus Torvalds 已提交
3469 3470
static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
A
Al Viro 已提交
3471
	__be32 *p;
L
Linus Torvalds 已提交
3472 3473 3474 3475 3476 3477
	int status = 0;

	*res = 0;
	if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
B
Benny Halevy 已提交
3478 3479 3480
		p = xdr_inline_decode(xdr, 8);
		if (unlikely(!p))
			goto out_overflow;
3481
		xdr_decode_hyper(p, res);
L
Linus Torvalds 已提交
3482 3483
		bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
	}
3484
	dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
L
Linus Torvalds 已提交
3485
	return status;
B
Benny Halevy 已提交
3486 3487 3488
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3489 3490 3491 3492
}

static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
A
Al Viro 已提交
3493
	__be32 *p;
L
Linus Torvalds 已提交
3494 3495 3496 3497 3498 3499
	int status = 0;

	*res = 0;
	if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
B
Benny Halevy 已提交
3500 3501 3502
		p = xdr_inline_decode(xdr, 8);
		if (unlikely(!p))
			goto out_overflow;
3503
		xdr_decode_hyper(p, res);
L
Linus Torvalds 已提交
3504 3505
		bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
	}
3506
	dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
L
Linus Torvalds 已提交
3507
	return status;
B
Benny Halevy 已提交
3508 3509 3510
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3511 3512 3513 3514
}

static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
A
Al Viro 已提交
3515
	__be32 *p;
L
Linus Torvalds 已提交
3516 3517 3518 3519 3520 3521
	int status = 0;

	*res = 0;
	if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
B
Benny Halevy 已提交
3522 3523 3524
		p = xdr_inline_decode(xdr, 8);
		if (unlikely(!p))
			goto out_overflow;
3525
		xdr_decode_hyper(p, res);
L
Linus Torvalds 已提交
3526 3527
		bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
	}
3528
	dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
L
Linus Torvalds 已提交
3529
	return status;
B
Benny Halevy 已提交
3530 3531 3532
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3533 3534
}

3535 3536
static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
{
3537
	u32 n;
A
Al Viro 已提交
3538
	__be32 *p;
3539 3540
	int status = 0;

B
Benny Halevy 已提交
3541 3542 3543
	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
3544
	n = be32_to_cpup(p);
3545 3546
	if (n == 0)
		goto root_path;
3547
	dprintk("pathname4: ");
3548 3549 3550 3551 3552
	if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
		dprintk("cannot parse %d components in path\n", n);
		goto out_eio;
	}
	for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
3553 3554 3555 3556
		struct nfs4_string *component = &path->components[path->ncomponents];
		status = decode_opaque_inline(xdr, &component->len, &component->data);
		if (unlikely(status != 0))
			goto out_eio;
3557
		ifdebug (XDR)
3558 3559 3560
			pr_cont("%s%.*s ",
				(path->ncomponents != n ? "/ " : ""),
				component->len, component->data);
3561 3562 3563
	}
out:
	return status;
3564 3565 3566 3567 3568
root_path:
/* a root pathname is sent as a zero component4 */
	path->ncomponents = 1;
	path->components[0].len=0;
	path->components[0].data=NULL;
3569
	dprintk("pathname4: /\n");
3570
	goto out;
3571 3572 3573 3574
out_eio:
	dprintk(" status %d", status);
	status = -EIO;
	goto out;
B
Benny Halevy 已提交
3575 3576 3577
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
3578 3579 3580
}

static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
3581 3582
{
	int n;
A
Al Viro 已提交
3583
	__be32 *p;
3584 3585 3586 3587 3588 3589 3590
	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;
3591 3592 3593 3594
	status = -EIO;
	/* Ignore borken servers that return unrequested attrs */
	if (unlikely(res == NULL))
		goto out;
3595
	dprintk("%s: fsroot:\n", __func__);
3596
	status = decode_pathname(xdr, &res->fs_path);
3597 3598
	if (unlikely(status != 0))
		goto out;
B
Benny Halevy 已提交
3599 3600 3601
	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
3602
	n = be32_to_cpup(p);
3603 3604
	if (n <= 0)
		goto out_eio;
3605
	for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
3606
		u32 m;
3607
		struct nfs4_fs_location *loc;
3608

3609 3610 3611
		if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
			break;
		loc = &res->locations[res->nlocations];
B
Benny Halevy 已提交
3612 3613 3614
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
3615
		m = be32_to_cpup(p);
3616

3617
		dprintk("%s: servers:\n", __func__);
3618 3619 3620 3621
		for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
			struct nfs4_string *server;

			if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
3622 3623 3624
				unsigned int i;
				dprintk("%s: using first %u of %u servers "
					"returned for location %u\n",
3625
						__func__,
3626 3627
						NFS4_FS_LOCATION_MAXSERVERS,
						m, res->nlocations);
3628
				for (i = loc->nservers; i < m; i++) {
T
Trond Myklebust 已提交
3629
					unsigned int len;
3630 3631 3632 3633 3634
					char *data;
					status = decode_opaque_inline(xdr, &len, &data);
					if (unlikely(status != 0))
						goto out_eio;
				}
3635
				break;
3636
			}
3637 3638 3639 3640 3641
			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);
3642 3643
		}
		status = decode_pathname(xdr, &loc->rootpath);
3644 3645 3646
		if (unlikely(status != 0))
			goto out_eio;
	}
3647
	if (res->nlocations != 0)
3648
		status = NFS_ATTR_FATTR_V4_LOCATIONS;
3649
out:
3650
	dprintk("%s: fs_locations done, error = %d\n", __func__, status);
3651
	return status;
B
Benny Halevy 已提交
3652 3653
out_overflow:
	print_overflow_msg(__func__, xdr);
3654 3655 3656 3657 3658
out_eio:
	status = -EIO;
	goto out;
}

L
Linus Torvalds 已提交
3659 3660
static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
A
Al Viro 已提交
3661
	__be32 *p;
L
Linus Torvalds 已提交
3662 3663 3664 3665 3666 3667
	int status = 0;

	*res = 0;
	if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
B
Benny Halevy 已提交
3668 3669 3670
		p = xdr_inline_decode(xdr, 8);
		if (unlikely(!p))
			goto out_overflow;
3671
		xdr_decode_hyper(p, res);
L
Linus Torvalds 已提交
3672 3673
		bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
	}
3674
	dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
L
Linus Torvalds 已提交
3675
	return status;
B
Benny Halevy 已提交
3676 3677 3678
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3679 3680 3681 3682
}

static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
{
A
Al Viro 已提交
3683
	__be32 *p;
L
Linus Torvalds 已提交
3684 3685 3686 3687 3688 3689
	int status = 0;

	*maxlink = 1;
	if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
B
Benny Halevy 已提交
3690 3691 3692
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
3693
		*maxlink = be32_to_cpup(p);
L
Linus Torvalds 已提交
3694 3695
		bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
	}
3696
	dprintk("%s: maxlink=%u\n", __func__, *maxlink);
L
Linus Torvalds 已提交
3697
	return status;
B
Benny Halevy 已提交
3698 3699 3700
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3701 3702 3703 3704
}

static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
{
A
Al Viro 已提交
3705
	__be32 *p;
L
Linus Torvalds 已提交
3706 3707 3708 3709 3710 3711
	int status = 0;

	*maxname = 1024;
	if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
		return -EIO;
	if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
B
Benny Halevy 已提交
3712 3713 3714
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
3715
		*maxname = be32_to_cpup(p);
L
Linus Torvalds 已提交
3716 3717
		bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
	}
3718
	dprintk("%s: maxname=%u\n", __func__, *maxname);
L
Linus Torvalds 已提交
3719
	return status;
B
Benny Halevy 已提交
3720 3721 3722
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3723 3724 3725 3726
}

static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
A
Al Viro 已提交
3727
	__be32 *p;
L
Linus Torvalds 已提交
3728 3729 3730 3731 3732 3733 3734
	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;
B
Benny Halevy 已提交
3735 3736 3737
		p = xdr_inline_decode(xdr, 8);
		if (unlikely(!p))
			goto out_overflow;
3738
		xdr_decode_hyper(p, &maxread);
L
Linus Torvalds 已提交
3739 3740 3741 3742 3743
		if (maxread > 0x7FFFFFFF)
			maxread = 0x7FFFFFFF;
		*res = (uint32_t)maxread;
		bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
	}
3744
	dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
L
Linus Torvalds 已提交
3745
	return status;
B
Benny Halevy 已提交
3746 3747 3748
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3749 3750 3751 3752
}

static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
A
Al Viro 已提交
3753
	__be32 *p;
L
Linus Torvalds 已提交
3754 3755 3756 3757 3758 3759 3760
	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;
B
Benny Halevy 已提交
3761 3762 3763
		p = xdr_inline_decode(xdr, 8);
		if (unlikely(!p))
			goto out_overflow;
3764
		xdr_decode_hyper(p, &maxwrite);
L
Linus Torvalds 已提交
3765 3766 3767 3768 3769
		if (maxwrite > 0x7FFFFFFF)
			maxwrite = 0x7FFFFFFF;
		*res = (uint32_t)maxwrite;
		bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
	}
3770
	dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
L
Linus Torvalds 已提交
3771
	return status;
B
Benny Halevy 已提交
3772 3773 3774
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3775 3776
}

3777
static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
L
Linus Torvalds 已提交
3778
{
3779
	uint32_t tmp;
A
Al Viro 已提交
3780
	__be32 *p;
3781
	int ret = 0;
L
Linus Torvalds 已提交
3782 3783 3784 3785 3786

	*mode = 0;
	if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
B
Benny Halevy 已提交
3787 3788 3789
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
3790
		tmp = be32_to_cpup(p);
3791
		*mode = tmp & ~S_IFMT;
L
Linus Torvalds 已提交
3792
		bitmap[1] &= ~FATTR4_WORD1_MODE;
3793
		ret = NFS_ATTR_FATTR_MODE;
L
Linus Torvalds 已提交
3794
	}
3795
	dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
3796
	return ret;
B
Benny Halevy 已提交
3797 3798 3799
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3800 3801 3802 3803
}

static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
{
A
Al Viro 已提交
3804
	__be32 *p;
3805
	int ret = 0;
L
Linus Torvalds 已提交
3806 3807 3808 3809 3810

	*nlink = 1;
	if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
B
Benny Halevy 已提交
3811 3812 3813
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
3814
		*nlink = be32_to_cpup(p);
L
Linus Torvalds 已提交
3815
		bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
3816
		ret = NFS_ATTR_FATTR_NLINK;
L
Linus Torvalds 已提交
3817
	}
3818
	dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
3819
	return ret;
B
Benny Halevy 已提交
3820 3821 3822
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3823 3824
}

3825
static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3826
		const struct nfs_server *server, kuid_t *uid,
3827
		struct nfs4_string *owner_name)
L
Linus Torvalds 已提交
3828
{
A
Al Viro 已提交
3829 3830
	uint32_t len;
	__be32 *p;
3831
	int ret = 0;
L
Linus Torvalds 已提交
3832

3833
	*uid = make_kuid(&init_user_ns, -2);
L
Linus Torvalds 已提交
3834 3835 3836
	if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
B
Benny Halevy 已提交
3837 3838 3839
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
3840
		len = be32_to_cpup(p);
B
Benny Halevy 已提交
3841 3842 3843
		p = xdr_inline_decode(xdr, len);
		if (unlikely(!p))
			goto out_overflow;
3844 3845 3846 3847 3848 3849
		if (owner_name != NULL) {
			owner_name->data = kmemdup(p, len, GFP_NOWAIT);
			if (owner_name->data != NULL) {
				owner_name->len = len;
				ret = NFS_ATTR_FATTR_OWNER_NAME;
			}
3850
		} else if (len < XDR_MAX_NETOBJ) {
3851
			if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
3852 3853
				ret = NFS_ATTR_FATTR_OWNER;
			else
L
Linus Torvalds 已提交
3854
				dprintk("%s: nfs_map_name_to_uid failed!\n",
3855
						__func__);
L
Linus Torvalds 已提交
3856
		} else
3857
			dprintk("%s: name too long (%u)!\n",
3858
					__func__, len);
L
Linus Torvalds 已提交
3859 3860
		bitmap[1] &= ~FATTR4_WORD1_OWNER;
	}
3861
	dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
3862
	return ret;
B
Benny Halevy 已提交
3863 3864 3865
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3866 3867
}

3868
static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3869
		const struct nfs_server *server, kgid_t *gid,
3870
		struct nfs4_string *group_name)
L
Linus Torvalds 已提交
3871
{
A
Al Viro 已提交
3872 3873
	uint32_t len;
	__be32 *p;
3874
	int ret = 0;
L
Linus Torvalds 已提交
3875

3876
	*gid = make_kgid(&init_user_ns, -2);
L
Linus Torvalds 已提交
3877 3878 3879
	if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
B
Benny Halevy 已提交
3880 3881 3882
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
3883
		len = be32_to_cpup(p);
B
Benny Halevy 已提交
3884 3885 3886
		p = xdr_inline_decode(xdr, len);
		if (unlikely(!p))
			goto out_overflow;
3887 3888 3889 3890 3891 3892
		if (group_name != NULL) {
			group_name->data = kmemdup(p, len, GFP_NOWAIT);
			if (group_name->data != NULL) {
				group_name->len = len;
				ret = NFS_ATTR_FATTR_GROUP_NAME;
			}
3893
		} else if (len < XDR_MAX_NETOBJ) {
3894
			if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
3895 3896
				ret = NFS_ATTR_FATTR_GROUP;
			else
L
Linus Torvalds 已提交
3897
				dprintk("%s: nfs_map_group_to_gid failed!\n",
3898
						__func__);
L
Linus Torvalds 已提交
3899
		} else
3900
			dprintk("%s: name too long (%u)!\n",
3901
					__func__, len);
L
Linus Torvalds 已提交
3902 3903
		bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
	}
3904
	dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
3905
	return ret;
B
Benny Halevy 已提交
3906 3907 3908
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3909 3910 3911 3912
}

static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
{
A
Al Viro 已提交
3913 3914
	uint32_t major = 0, minor = 0;
	__be32 *p;
3915
	int ret = 0;
L
Linus Torvalds 已提交
3916 3917 3918 3919 3920 3921 3922

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

B
Benny Halevy 已提交
3923 3924 3925
		p = xdr_inline_decode(xdr, 8);
		if (unlikely(!p))
			goto out_overflow;
B
Benny Halevy 已提交
3926
		major = be32_to_cpup(p++);
3927
		minor = be32_to_cpup(p);
L
Linus Torvalds 已提交
3928 3929 3930 3931
		tmp = MKDEV(major, minor);
		if (MAJOR(tmp) == major && MINOR(tmp) == minor)
			*rdev = tmp;
		bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
3932
		ret = NFS_ATTR_FATTR_RDEV;
L
Linus Torvalds 已提交
3933
	}
3934
	dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
3935
	return ret;
B
Benny Halevy 已提交
3936 3937 3938
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3939 3940 3941 3942
}

static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
A
Al Viro 已提交
3943
	__be32 *p;
L
Linus Torvalds 已提交
3944 3945 3946 3947 3948 3949
	int status = 0;

	*res = 0;
	if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
B
Benny Halevy 已提交
3950 3951 3952
		p = xdr_inline_decode(xdr, 8);
		if (unlikely(!p))
			goto out_overflow;
3953
		xdr_decode_hyper(p, res);
L
Linus Torvalds 已提交
3954 3955
		bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
	}
3956
	dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
L
Linus Torvalds 已提交
3957
	return status;
B
Benny Halevy 已提交
3958 3959 3960
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3961 3962 3963 3964
}

static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
A
Al Viro 已提交
3965
	__be32 *p;
L
Linus Torvalds 已提交
3966 3967 3968 3969 3970 3971
	int status = 0;

	*res = 0;
	if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
B
Benny Halevy 已提交
3972 3973 3974
		p = xdr_inline_decode(xdr, 8);
		if (unlikely(!p))
			goto out_overflow;
3975
		xdr_decode_hyper(p, res);
L
Linus Torvalds 已提交
3976 3977
		bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
	}
3978
	dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
L
Linus Torvalds 已提交
3979
	return status;
B
Benny Halevy 已提交
3980 3981 3982
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
3983 3984 3985 3986
}

static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
A
Al Viro 已提交
3987
	__be32 *p;
L
Linus Torvalds 已提交
3988 3989 3990 3991 3992 3993
	int status = 0;

	*res = 0;
	if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
B
Benny Halevy 已提交
3994 3995 3996
		p = xdr_inline_decode(xdr, 8);
		if (unlikely(!p))
			goto out_overflow;
3997
		xdr_decode_hyper(p, res);
L
Linus Torvalds 已提交
3998 3999
		bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
	}
4000
	dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
L
Linus Torvalds 已提交
4001
	return status;
B
Benny Halevy 已提交
4002 4003 4004
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
4005 4006 4007 4008
}

static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
{
A
Al Viro 已提交
4009
	__be32 *p;
4010
	int ret = 0;
L
Linus Torvalds 已提交
4011 4012 4013 4014 4015

	*used = 0;
	if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
B
Benny Halevy 已提交
4016 4017 4018
		p = xdr_inline_decode(xdr, 8);
		if (unlikely(!p))
			goto out_overflow;
4019
		xdr_decode_hyper(p, used);
L
Linus Torvalds 已提交
4020
		bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
4021
		ret = NFS_ATTR_FATTR_SPACE_USED;
L
Linus Torvalds 已提交
4022
	}
4023
	dprintk("%s: space used=%Lu\n", __func__,
L
Linus Torvalds 已提交
4024
			(unsigned long long)*used);
4025
	return ret;
B
Benny Halevy 已提交
4026 4027 4028
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
4029 4030 4031 4032
}

static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
{
A
Al Viro 已提交
4033
	__be32 *p;
L
Linus Torvalds 已提交
4034 4035 4036
	uint64_t sec;
	uint32_t nsec;

B
Benny Halevy 已提交
4037 4038 4039
	p = xdr_inline_decode(xdr, 12);
	if (unlikely(!p))
		goto out_overflow;
B
Benny Halevy 已提交
4040
	p = xdr_decode_hyper(p, &sec);
4041
	nsec = be32_to_cpup(p);
L
Linus Torvalds 已提交
4042 4043 4044
	time->tv_sec = (time_t)sec;
	time->tv_nsec = (long)nsec;
	return 0;
B
Benny Halevy 已提交
4045 4046 4047
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059
}

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);
4060 4061
		if (status == 0)
			status = NFS_ATTR_FATTR_ATIME;
L
Linus Torvalds 已提交
4062 4063
		bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
	}
4064
	dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
L
Linus Torvalds 已提交
4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077
	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);
4078 4079
		if (status == 0)
			status = NFS_ATTR_FATTR_CTIME;
L
Linus Torvalds 已提交
4080 4081
		bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
	}
4082
	dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
L
Linus Torvalds 已提交
4083 4084 4085
	return status;
}

4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103
static int decode_attr_time_delta(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_DELTA - 1U)))
		return -EIO;
	if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
		status = decode_attr_time(xdr, time);
		bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
	}
	dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
		(long)time->tv_nsec);
	return status;
}

4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153
static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
					struct nfs4_label *label)
{
	uint32_t pi = 0;
	uint32_t lfs = 0;
	__u32 len;
	__be32 *p;
	int status = 0;

	if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
		return -EIO;
	if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
		lfs = be32_to_cpup(p++);
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
		pi = be32_to_cpup(p++);
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
		len = be32_to_cpup(p++);
		p = xdr_inline_decode(xdr, len);
		if (unlikely(!p))
			goto out_overflow;
		if (len < NFS4_MAXLABELLEN) {
			if (label) {
				memcpy(label->label, p, len);
				label->len = len;
				label->pi = pi;
				label->lfs = lfs;
				status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
			}
			bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
		} else
			printk(KERN_WARNING "%s: label too long (%u)!\n",
					__func__, len);
	}
	if (label && label->label)
		dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
			(char *)label->label, label->len, label->pi, label->lfs);
	return status;

out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
}

L
Linus Torvalds 已提交
4154 4155 4156 4157 4158 4159 4160 4161 4162 4163
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);
4164 4165
		if (status == 0)
			status = NFS_ATTR_FATTR_MTIME;
L
Linus Torvalds 已提交
4166 4167
		bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
	}
4168
	dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
L
Linus Torvalds 已提交
4169 4170 4171
	return status;
}

4172
static int verify_attr_len(struct xdr_stream *xdr, unsigned int savep, uint32_t attrlen)
L
Linus Torvalds 已提交
4173 4174
{
	unsigned int attrwords = XDR_QUADLEN(attrlen);
4175
	unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
L
Linus Torvalds 已提交
4176 4177

	if (unlikely(attrwords != nwords)) {
4178 4179
		dprintk("%s: server returned incorrect attribute length: "
			"%u %c %u\n",
4180
				__func__,
L
Linus Torvalds 已提交
4181 4182 4183 4184 4185 4186 4187 4188 4189 4190
				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
4191
	__be32 *p;
L
Linus Torvalds 已提交
4192

B
Benny Halevy 已提交
4193 4194 4195
	p = xdr_inline_decode(xdr, 20);
	if (unlikely(!p))
		goto out_overflow;
B
Benny Halevy 已提交
4196
	cinfo->atomic = be32_to_cpup(p++);
B
Benny Halevy 已提交
4197
	p = xdr_decode_hyper(p, &cinfo->before);
4198
	xdr_decode_hyper(p, &cinfo->after);
L
Linus Torvalds 已提交
4199
	return 0;
B
Benny Halevy 已提交
4200 4201 4202
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
4203 4204
}

4205
static int decode_access(struct xdr_stream *xdr, u32 *supported, u32 *access)
L
Linus Torvalds 已提交
4206
{
A
Al Viro 已提交
4207
	__be32 *p;
L
Linus Torvalds 已提交
4208 4209 4210 4211 4212 4213
	uint32_t supp, acc;
	int status;

	status = decode_op_hdr(xdr, OP_ACCESS);
	if (status)
		return status;
B
Benny Halevy 已提交
4214 4215 4216
	p = xdr_inline_decode(xdr, 8);
	if (unlikely(!p))
		goto out_overflow;
B
Benny Halevy 已提交
4217
	supp = be32_to_cpup(p++);
4218
	acc = be32_to_cpup(p);
4219 4220
	*supported = supp;
	*access = acc;
L
Linus Torvalds 已提交
4221
	return 0;
B
Benny Halevy 已提交
4222 4223 4224
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
4225 4226
}

4227
static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
L
Linus Torvalds 已提交
4228
{
A
Al Viro 已提交
4229
	__be32 *p;
4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241

	p = xdr_inline_decode(xdr, len);
	if (likely(p)) {
		memcpy(buf, p, len);
		return 0;
	}
	print_overflow_msg(__func__, xdr);
	return -EIO;
}

static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
{
4242
	return decode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
4243 4244 4245 4246
}

static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
{
L
Linus Torvalds 已提交
4247 4248 4249
	int status;

	status = decode_op_hdr(xdr, OP_CLOSE);
4250 4251
	if (status != -EIO)
		nfs_increment_open_seqid(status, res->seqid);
4252 4253 4254
	if (!status)
		status = decode_stateid(xdr, &res->stateid);
	return status;
L
Linus Torvalds 已提交
4255 4256
}

4257 4258
static int decode_verifier(struct xdr_stream *xdr, void *verifier)
{
4259
	return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
L
Linus Torvalds 已提交
4260 4261
}

4262 4263 4264 4265 4266
static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
{
	return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
}

4267
static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
L
Linus Torvalds 已提交
4268 4269 4270 4271
{
	int status;

	status = decode_op_hdr(xdr, OP_COMMIT);
4272
	if (!status)
4273
		status = decode_write_verifier(xdr, &res->verf->verifier);
4274
	return status;
L
Linus Torvalds 已提交
4275 4276 4277 4278
}

static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
{
A
Al Viro 已提交
4279
	__be32 *p;
L
Linus Torvalds 已提交
4280 4281 4282 4283 4284 4285 4286 4287
	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;
B
Benny Halevy 已提交
4288 4289 4290
	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
4291
	bmlen = be32_to_cpup(p);
B
Benny Halevy 已提交
4292 4293 4294 4295 4296 4297
	p = xdr_inline_decode(xdr, bmlen << 2);
	if (likely(p))
		return 0;
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
4298 4299 4300 4301
}

static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
{
4302
	unsigned int savep;
4303
	uint32_t attrlen, bitmap[3] = {0};
L
Linus Torvalds 已提交
4304 4305 4306 4307 4308 4309 4310 4311 4312 4313
	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;
4314 4315 4316
	if ((status = decode_attr_fh_expire_type(xdr, bitmap,
						 &res->fh_expire_type)) != 0)
		goto xdr_error;
L
Linus Torvalds 已提交
4317 4318 4319 4320 4321 4322 4323 4324
	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:
4325
	dprintk("%s: xdr returned %d!\n", __func__, -status);
L
Linus Torvalds 已提交
4326 4327
	return status;
}
4328

L
Linus Torvalds 已提交
4329 4330
static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
{
4331
	unsigned int savep;
4332
	uint32_t attrlen, bitmap[3] = {0};
L
Linus Torvalds 已提交
4333
	int status;
4334

L
Linus Torvalds 已提交
4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356
	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:
4357
	dprintk("%s: xdr returned %d!\n", __func__, -status);
L
Linus Torvalds 已提交
4358 4359 4360 4361 4362
	return status;
}

static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
{
4363
	unsigned int savep;
4364
	uint32_t attrlen, bitmap[3] = {0};
L
Linus Torvalds 已提交
4365
	int status;
4366

L
Linus Torvalds 已提交
4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380
	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:
4381
	dprintk("%s: xdr returned %d!\n", __func__, -status);
L
Linus Torvalds 已提交
4382 4383 4384
	return status;
}

4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407
static int decode_threshold_hint(struct xdr_stream *xdr,
				  uint32_t *bitmap,
				  uint64_t *res,
				  uint32_t hint_bit)
{
	__be32 *p;

	*res = 0;
	if (likely(bitmap[0] & hint_bit)) {
		p = xdr_inline_decode(xdr, 8);
		if (unlikely(!p))
			goto out_overflow;
		xdr_decode_hyper(p, res);
	}
	return 0;
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
}

static int decode_first_threshold_item4(struct xdr_stream *xdr,
					struct nfs4_threshold *res)
{
4408 4409
	__be32 *p;
	unsigned int savep;
4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469
	uint32_t bitmap[3] = {0,}, attrlen;
	int status;

	/* layout type */
	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p)) {
		print_overflow_msg(__func__, xdr);
		return -EIO;
	}
	res->l_type = be32_to_cpup(p);

	/* thi_hintset bitmap */
	status = decode_attr_bitmap(xdr, bitmap);
	if (status < 0)
		goto xdr_error;

	/* thi_hintlist length */
	status = decode_attr_length(xdr, &attrlen, &savep);
	if (status < 0)
		goto xdr_error;
	/* thi_hintlist */
	status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
	if (status < 0)
		goto xdr_error;
	status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
	if (status < 0)
		goto xdr_error;
	status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
				       THRESHOLD_RD_IO);
	if (status < 0)
		goto xdr_error;
	status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
				       THRESHOLD_WR_IO);
	if (status < 0)
		goto xdr_error;

	status = verify_attr_len(xdr, savep, attrlen);
	res->bm = bitmap[0];

	dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
		 __func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
		res->wr_io_sz);
xdr_error:
	dprintk("%s ret=%d!\n", __func__, status);
	return status;
}

/*
 * Thresholds on pNFS direct I/O vrs MDS I/O
 */
static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
				    uint32_t *bitmap,
				    struct nfs4_threshold *res)
{
	__be32 *p;
	int status = 0;
	uint32_t num;

	if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
		return -EIO;
4470
	if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
4471 4472 4473
		/* Did the server return an unrequested attribute? */
		if (unlikely(res == NULL))
			return -EREMOTEIO;
4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
		num = be32_to_cpup(p);
		if (num == 0)
			return 0;
		if (num > 1)
			printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
				"drivers per filesystem not supported\n",
				__func__);

		status = decode_first_threshold_item4(xdr, res);
4486
		bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
4487 4488 4489 4490 4491 4492 4493
	}
	return status;
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
}

4494 4495
static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
		struct nfs_fattr *fattr, struct nfs_fh *fh,
4496
		struct nfs4_fs_locations *fs_loc, struct nfs4_label *label,
4497
		const struct nfs_server *server)
L
Linus Torvalds 已提交
4498
{
4499 4500
	int status;
	umode_t fmode = 0;
4501
	uint32_t type;
4502
	int32_t err;
L
Linus Torvalds 已提交
4503

4504 4505
	status = decode_attr_type(xdr, bitmap, &type);
	if (status < 0)
L
Linus Torvalds 已提交
4506
		goto xdr_error;
4507 4508 4509 4510 4511
	fattr->mode = 0;
	if (status != 0) {
		fattr->mode |= nfs_type2fmt[type];
		fattr->valid |= status;
	}
L
Linus Torvalds 已提交
4512

4513 4514
	status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
	if (status < 0)
L
Linus Torvalds 已提交
4515
		goto xdr_error;
4516
	fattr->valid |= status;
4517 4518 4519

	status = decode_attr_size(xdr, bitmap, &fattr->size);
	if (status < 0)
L
Linus Torvalds 已提交
4520
		goto xdr_error;
4521
	fattr->valid |= status;
4522 4523 4524

	status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
	if (status < 0)
L
Linus Torvalds 已提交
4525
		goto xdr_error;
4526
	fattr->valid |= status;
4527

4528 4529
	err = 0;
	status = decode_attr_error(xdr, bitmap, &err);
4530 4531 4532 4533 4534 4535 4536
	if (status < 0)
		goto xdr_error;

	status = decode_attr_filehandle(xdr, bitmap, fh);
	if (status < 0)
		goto xdr_error;

4537 4538
	status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
	if (status < 0)
L
Linus Torvalds 已提交
4539
		goto xdr_error;
4540
	fattr->valid |= status;
4541

4542
	status = decode_attr_fs_locations(xdr, bitmap, fs_loc);
4543
	if (status < 0)
4544
		goto xdr_error;
4545
	fattr->valid |= status;
4546 4547 4548

	status = decode_attr_mode(xdr, bitmap, &fmode);
	if (status < 0)
L
Linus Torvalds 已提交
4549
		goto xdr_error;
4550 4551 4552 4553
	if (status != 0) {
		fattr->mode |= fmode;
		fattr->valid |= status;
	}
4554 4555 4556

	status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
	if (status < 0)
L
Linus Torvalds 已提交
4557
		goto xdr_error;
4558
	fattr->valid |= status;
4559

4560
	status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
4561
	if (status < 0)
L
Linus Torvalds 已提交
4562
		goto xdr_error;
4563
	fattr->valid |= status;
4564

4565
	status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
4566
	if (status < 0)
L
Linus Torvalds 已提交
4567
		goto xdr_error;
4568
	fattr->valid |= status;
4569 4570 4571

	status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
	if (status < 0)
L
Linus Torvalds 已提交
4572
		goto xdr_error;
4573
	fattr->valid |= status;
4574 4575 4576

	status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
	if (status < 0)
L
Linus Torvalds 已提交
4577
		goto xdr_error;
4578
	fattr->valid |= status;
4579 4580 4581

	status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
	if (status < 0)
L
Linus Torvalds 已提交
4582
		goto xdr_error;
4583
	fattr->valid |= status;
4584 4585 4586

	status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
	if (status < 0)
L
Linus Torvalds 已提交
4587
		goto xdr_error;
4588
	fattr->valid |= status;
4589 4590 4591

	status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
	if (status < 0)
L
Linus Torvalds 已提交
4592
		goto xdr_error;
4593
	fattr->valid |= status;
4594

4595
	status = decode_attr_mounted_on_fileid(xdr, bitmap, &fattr->mounted_on_fileid);
4596
	if (status < 0)
4597
		goto xdr_error;
4598
	fattr->valid |= status;
4599

4600 4601 4602 4603
	status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
	if (status < 0)
		goto xdr_error;

4604 4605 4606 4607 4608 4609 4610
	if (label) {
		status = decode_attr_security_label(xdr, bitmap, label);
		if (status < 0)
			goto xdr_error;
		fattr->valid |= status;
	}

4611 4612 4613 4614 4615 4616
xdr_error:
	dprintk("%s: xdr returned %d\n", __func__, -status);
	return status;
}

static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4617
		struct nfs_fh *fh, struct nfs4_fs_locations *fs_loc,
4618
		struct nfs4_label *label, const struct nfs_server *server)
4619
{
4620
	unsigned int savep;
4621
	uint32_t attrlen,
4622
		 bitmap[3] = {0};
4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636
	int status;

	status = decode_op_hdr(xdr, OP_GETATTR);
	if (status < 0)
		goto xdr_error;

	status = decode_attr_bitmap(xdr, bitmap);
	if (status < 0)
		goto xdr_error;

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

4637 4638
	status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, fs_loc,
					label, server);
4639 4640 4641
	if (status < 0)
		goto xdr_error;

4642
	status = verify_attr_len(xdr, savep, attrlen);
L
Linus Torvalds 已提交
4643
xdr_error:
4644
	dprintk("%s: xdr returned %d\n", __func__, -status);
L
Linus Torvalds 已提交
4645 4646 4647
	return status;
}

4648 4649 4650 4651 4652 4653
static int decode_getfattr_label(struct xdr_stream *xdr, struct nfs_fattr *fattr,
		struct nfs4_label *label, const struct nfs_server *server)
{
	return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server);
}

4654
static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4655
		const struct nfs_server *server)
4656
{
4657
	return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server);
4658
}
L
Linus Torvalds 已提交
4659

4660 4661 4662 4663 4664 4665 4666
/*
 * Decode potentially multiple layout types. Currently we only support
 * one layout driver per file system.
 */
static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
					 uint32_t *layouttype)
{
4667
	__be32 *p;
4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679 4680
	int num;

	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
	num = be32_to_cpup(p);

	/* pNFS is not supported by the underlying file system */
	if (num == 0) {
		*layouttype = 0;
		return 0;
	}
	if (num > 1)
4681 4682
		printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout "
			"drivers per filesystem not supported\n", __func__);
4683 4684 4685 4686 4687 4688 4689 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712 4713 4714

	/* Decode and set first layout type, move xdr->p past unused types */
	p = xdr_inline_decode(xdr, num * 4);
	if (unlikely(!p))
		goto out_overflow;
	*layouttype = be32_to_cpup(p);
	return 0;
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
}

/*
 * The type of file system exported.
 * Note we must ensure that layouttype is set in any non-error case.
 */
static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
				uint32_t *layouttype)
{
	int status = 0;

	dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
	if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
		return -EIO;
	if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
		status = decode_first_pnfs_layout_type(xdr, layouttype);
		bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
	} else
		*layouttype = 0;
	return status;
}

4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736
/*
 * The prefered block size for layout directed io
 */
static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
				      uint32_t *res)
{
	__be32 *p;

	dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
	*res = 0;
	if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p)) {
			print_overflow_msg(__func__, xdr);
			return -EIO;
		}
		*res = be32_to_cpup(p);
		bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
	}
	return 0;
}

L
Linus Torvalds 已提交
4737 4738
static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
{
4739
	unsigned int savep;
4740
	uint32_t attrlen, bitmap[3];
L
Linus Torvalds 已提交
4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761
	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;
4762
	status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4763 4764 4765
	if (status != 0)
		goto xdr_error;
	status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4766 4767
	if (status != 0)
		goto xdr_error;
4768 4769 4770
	status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
	if (status)
		goto xdr_error;
L
Linus Torvalds 已提交
4771 4772 4773

	status = verify_attr_len(xdr, savep, attrlen);
xdr_error:
4774
	dprintk("%s: xdr returned %d!\n", __func__, -status);
L
Linus Torvalds 已提交
4775 4776 4777 4778 4779
	return status;
}

static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
{
A
Al Viro 已提交
4780
	__be32 *p;
L
Linus Torvalds 已提交
4781 4782 4783
	uint32_t len;
	int status;

4784 4785 4786
	/* Zero handle first to allow comparisons */
	memset(fh, 0, sizeof(*fh));

L
Linus Torvalds 已提交
4787 4788 4789 4790
	status = decode_op_hdr(xdr, OP_GETFH);
	if (status)
		return status;

B
Benny Halevy 已提交
4791 4792 4793
	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
4794
	len = be32_to_cpup(p);
L
Linus Torvalds 已提交
4795 4796 4797
	if (len > NFS4_FHSIZE)
		return -EIO;
	fh->size = len;
B
Benny Halevy 已提交
4798 4799 4800
	p = xdr_inline_decode(xdr, len);
	if (unlikely(!p))
		goto out_overflow;
B
Benny Halevy 已提交
4801
	memcpy(fh->data, p, len);
L
Linus Torvalds 已提交
4802
	return 0;
B
Benny Halevy 已提交
4803 4804 4805
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
4806 4807 4808 4809 4810
}

static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
{
	int status;
4811

L
Linus Torvalds 已提交
4812 4813 4814 4815 4816 4817 4818 4819 4820
	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
4821
static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
L
Linus Torvalds 已提交
4822
{
T
Trond Myklebust 已提交
4823
	uint64_t offset, length, clientid;
A
Al Viro 已提交
4824
	__be32 *p;
T
Trond Myklebust 已提交
4825
	uint32_t namelen, type;
L
Linus Torvalds 已提交
4826

4827
	p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
B
Benny Halevy 已提交
4828 4829
	if (unlikely(!p))
		goto out_overflow;
4830
	p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
B
Benny Halevy 已提交
4831
	p = xdr_decode_hyper(p, &length);
4832 4833
	type = be32_to_cpup(p++); /* 4 byte read */
	if (fl != NULL) { /* manipulate file lock */
T
Trond Myklebust 已提交
4834 4835 4836 4837 4838 4839 4840 4841 4842
		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;
	}
4843 4844 4845
	p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
	namelen = be32_to_cpup(p); /* read 4 bytes */  /* have read all 32 bytes now */
	p = xdr_inline_decode(xdr, namelen); /* variable size field */
B
Benny Halevy 已提交
4846 4847 4848 4849 4850
	if (likely(p))
		return -NFS4ERR_DENIED;
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
4851 4852
}

T
Trond Myklebust 已提交
4853
static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
L
Linus Torvalds 已提交
4854 4855 4856 4857
{
	int status;

	status = decode_op_hdr(xdr, OP_LOCK);
4858 4859
	if (status == -EIO)
		goto out;
L
Linus Torvalds 已提交
4860
	if (status == 0) {
4861 4862 4863
		status = decode_stateid(xdr, &res->stateid);
		if (unlikely(status))
			goto out;
L
Linus Torvalds 已提交
4864
	} else if (status == -NFS4ERR_DENIED)
4865 4866 4867 4868 4869
		status = decode_lock_denied(xdr, NULL);
	if (res->open_seqid != NULL)
		nfs_increment_open_seqid(status, res->open_seqid);
	nfs_increment_lock_seqid(status, res->lock_seqid);
out:
L
Linus Torvalds 已提交
4870 4871 4872
	return status;
}

T
Trond Myklebust 已提交
4873
static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
L
Linus Torvalds 已提交
4874 4875 4876 4877
{
	int status;
	status = decode_op_hdr(xdr, OP_LOCKT);
	if (status == -NFS4ERR_DENIED)
T
Trond Myklebust 已提交
4878
		return decode_lock_denied(xdr, res->denied);
L
Linus Torvalds 已提交
4879 4880 4881
	return status;
}

T
Trond Myklebust 已提交
4882
static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
L
Linus Torvalds 已提交
4883 4884 4885 4886
{
	int status;

	status = decode_op_hdr(xdr, OP_LOCKU);
4887 4888
	if (status != -EIO)
		nfs_increment_lock_seqid(status, res->seqid);
4889 4890
	if (status == 0)
		status = decode_stateid(xdr, &res->stateid);
L
Linus Torvalds 已提交
4891 4892 4893
	return status;
}

4894 4895 4896 4897 4898
static int decode_release_lockowner(struct xdr_stream *xdr)
{
	return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
}

L
Linus Torvalds 已提交
4899 4900 4901 4902 4903 4904 4905 4906
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
Andy Adamson 已提交
4907
	__be32 *p;
L
Linus Torvalds 已提交
4908 4909
	uint32_t limit_type, nblocks, blocksize;

B
Benny Halevy 已提交
4910 4911 4912
	p = xdr_inline_decode(xdr, 12);
	if (unlikely(!p))
		goto out_overflow;
B
Benny Halevy 已提交
4913
	limit_type = be32_to_cpup(p++);
L
Linus Torvalds 已提交
4914
	switch (limit_type) {
A
Andy Adamson 已提交
4915
	case 1:
4916
		xdr_decode_hyper(p, maxsize);
A
Andy Adamson 已提交
4917 4918
		break;
	case 2:
B
Benny Halevy 已提交
4919
		nblocks = be32_to_cpup(p++);
4920
		blocksize = be32_to_cpup(p);
A
Andy Adamson 已提交
4921
		*maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
L
Linus Torvalds 已提交
4922 4923
	}
	return 0;
B
Benny Halevy 已提交
4924 4925 4926
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
4927 4928 4929 4930
}

static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
{
A
Andy Adamson 已提交
4931 4932
	__be32 *p;
	uint32_t delegation_type;
4933
	int status;
L
Linus Torvalds 已提交
4934

B
Benny Halevy 已提交
4935 4936 4937
	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
4938
	delegation_type = be32_to_cpup(p);
L
Linus Torvalds 已提交
4939 4940 4941 4942
	if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
		res->delegation_type = 0;
		return 0;
	}
4943 4944 4945
	status = decode_stateid(xdr, &res->delegation);
	if (unlikely(status))
		return status;
B
Benny Halevy 已提交
4946 4947 4948
	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
4949
	res->do_recall = be32_to_cpup(p);
A
Andy Adamson 已提交
4950

L
Linus Torvalds 已提交
4951
	switch (delegation_type) {
A
Andy Adamson 已提交
4952 4953 4954 4955 4956 4957
	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)
L
Linus Torvalds 已提交
4958 4959
				return -EIO;
	}
4960
	return decode_ace(xdr, NULL, res->server->nfs_client);
B
Benny Halevy 已提交
4961 4962 4963
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
4964 4965 4966 4967
}

static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
{
A
Andy Adamson 已提交
4968
	__be32 *p;
4969
	uint32_t savewords, bmlen, i;
A
Andy Adamson 已提交
4970
	int status;
L
Linus Torvalds 已提交
4971

4972 4973 4974 4975 4976 4977
	if (!__decode_op_hdr(xdr, OP_OPEN, &status))
		return status;
	nfs_increment_open_seqid(status, res->seqid);
	if (status)
		return status;
	status = decode_stateid(xdr, &res->stateid);
4978
	if (unlikely(status))
A
Andy Adamson 已提交
4979
		return status;
L
Linus Torvalds 已提交
4980

A
Andy Adamson 已提交
4981
	decode_change_info(xdr, &res->cinfo);
L
Linus Torvalds 已提交
4982

B
Benny Halevy 已提交
4983 4984 4985
	p = xdr_inline_decode(xdr, 8);
	if (unlikely(!p))
		goto out_overflow;
B
Benny Halevy 已提交
4986
	res->rflags = be32_to_cpup(p++);
4987
	bmlen = be32_to_cpup(p);
A
Andy Adamson 已提交
4988 4989
	if (bmlen > 10)
		goto xdr_error;
L
Linus Torvalds 已提交
4990

B
Benny Halevy 已提交
4991 4992 4993
	p = xdr_inline_decode(xdr, bmlen << 2);
	if (unlikely(!p))
		goto out_overflow;
4994 4995
	savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
	for (i = 0; i < savewords; ++i)
B
Benny Halevy 已提交
4996
		res->attrset[i] = be32_to_cpup(p++);
4997 4998 4999
	for (; i < NFS4_BITMAP_SIZE; i++)
		res->attrset[i] = 0;

L
Linus Torvalds 已提交
5000 5001
	return decode_delegation(xdr, res);
xdr_error:
5002
	dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
L
Linus Torvalds 已提交
5003
	return -EIO;
B
Benny Halevy 已提交
5004 5005 5006
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
5007 5008 5009 5010 5011 5012
}

static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
{
	int status;

A
Andy Adamson 已提交
5013
	status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
5014 5015
	if (status != -EIO)
		nfs_increment_open_seqid(status, res->seqid);
5016 5017 5018
	if (!status)
		status = decode_stateid(xdr, &res->stateid);
	return status;
L
Linus Torvalds 已提交
5019 5020 5021 5022 5023 5024 5025
}

static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
{
	int status;

	status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
5026 5027
	if (status != -EIO)
		nfs_increment_open_seqid(status, res->seqid);
5028 5029 5030
	if (!status)
		status = decode_stateid(xdr, &res->stateid);
	return status;
L
Linus Torvalds 已提交
5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041 5042
}

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);
}

5043 5044
static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req,
		       struct nfs_pgio_res *res)
L
Linus Torvalds 已提交
5045
{
A
Al Viro 已提交
5046
	__be32 *p;
5047
	uint32_t count, eof, recvd;
L
Linus Torvalds 已提交
5048 5049 5050 5051 5052
	int status;

	status = decode_op_hdr(xdr, OP_READ);
	if (status)
		return status;
B
Benny Halevy 已提交
5053 5054 5055
	p = xdr_inline_decode(xdr, 8);
	if (unlikely(!p))
		goto out_overflow;
B
Benny Halevy 已提交
5056
	eof = be32_to_cpup(p++);
5057
	count = be32_to_cpup(p);
5058
	recvd = xdr_read_pages(xdr, count);
L
Linus Torvalds 已提交
5059
	if (count > recvd) {
5060
		dprintk("NFS: server cheating in read reply: "
L
Linus Torvalds 已提交
5061 5062 5063 5064 5065 5066 5067
				"count %u > recvd %u\n", count, recvd);
		count = recvd;
		eof = 0;
	}
	res->eof = eof;
	res->count = count;
	return 0;
B
Benny Halevy 已提交
5068 5069 5070
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
5071 5072 5073 5074
}

static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
{
5075
	int		status;
5076
	__be32		verf[2];
L
Linus Torvalds 已提交
5077 5078

	status = decode_op_hdr(xdr, OP_READDIR);
5079 5080 5081
	if (!status)
		status = decode_verifier(xdr, readdir->verifier.data);
	if (unlikely(status))
L
Linus Torvalds 已提交
5082
		return status;
5083
	memcpy(verf, readdir->verifier.data, sizeof(verf));
5084
	dprintk("%s: verifier = %08x:%08x\n",
5085
			__func__, verf[0], verf[1]);
5086
	return xdr_read_pages(xdr, xdr->buf->page_len);
L
Linus Torvalds 已提交
5087 5088 5089 5090 5091
}

static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
{
	struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
5092
	u32 len, recvd;
A
Al Viro 已提交
5093
	__be32 *p;
L
Linus Torvalds 已提交
5094 5095 5096 5097 5098 5099 5100
	int status;

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

	/* Convert length of symlink */
B
Benny Halevy 已提交
5101 5102 5103
	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
5104
	len = be32_to_cpup(p);
L
Linus Torvalds 已提交
5105
	if (len >= rcvbuf->page_len || len <= 0) {
5106
		dprintk("nfs: server returned giant symlink!\n");
L
Linus Torvalds 已提交
5107 5108
		return -ENAMETOOLONG;
	}
5109
	recvd = xdr_read_pages(xdr, len);
L
Linus Torvalds 已提交
5110
	if (recvd < len) {
5111
		dprintk("NFS: server cheating in readlink reply: "
L
Linus Torvalds 已提交
5112 5113 5114 5115 5116 5117 5118 5119 5120 5121
				"count %u > recvd %u\n", len, recvd);
		return -EIO;
	}
	/*
	 * 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).
	 */
5122
	xdr_terminate_string(rcvbuf, len);
L
Linus Torvalds 已提交
5123
	return 0;
B
Benny Halevy 已提交
5124 5125 5126
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
5127 5128 5129 5130 5131 5132 5133 5134 5135 5136 5137 5138 5139 5140 5141 5142 5143 5144 5145 5146 5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160
}

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);
}

5161 5162 5163 5164 5165 5166
static int
decode_restorefh(struct xdr_stream *xdr)
{
	return decode_op_hdr(xdr, OP_RESTOREFH);
}

5167
static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
5168
			 struct nfs_getaclres *res)
5169
{
5170
	unsigned int savep;
5171
	uint32_t attrlen,
5172
		 bitmap[3] = {0};
5173
	int status;
5174
	unsigned int pg_offset;
5175

5176
	res->acl_len = 0;
5177 5178
	if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
		goto out;
5179

5180 5181
	xdr_enter_page(xdr, xdr->buf->page_len);

5182 5183
	/* Calculate the offset of the page data */
	pg_offset = xdr->buf->head[0].iov_len;
5184

5185 5186 5187 5188 5189 5190 5191 5192 5193
	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)) {

5194 5195 5196
		/* The bitmap (xdr len + bitmaps) and the attr xdr len words
		 * are stored with the acl data to handle the problem of
		 * variable length bitmaps.*/
5197
		res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
5198
		res->acl_len = attrlen;
5199 5200 5201 5202 5203

		/* Check for receive buffer overflow */
		if (res->acl_len > (xdr->nwords << 2) ||
		    res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
			res->acl_flags |= NFS4_ACL_TRUNC;
5204
			dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
5205
					attrlen, xdr->nwords << 2);
5206
		}
J
J. Bruce Fields 已提交
5207 5208
	} else
		status = -EOPNOTSUPP;
5209 5210 5211 5212 5213

out:
	return status;
}

L
Linus Torvalds 已提交
5214 5215 5216 5217 5218 5219
static int
decode_savefh(struct xdr_stream *xdr)
{
	return decode_op_hdr(xdr, OP_SAVEFH);
}

5220
static int decode_setattr(struct xdr_stream *xdr)
L
Linus Torvalds 已提交
5221
{
A
Al Viro 已提交
5222
	__be32 *p;
L
Linus Torvalds 已提交
5223 5224 5225 5226 5227 5228
	uint32_t bmlen;
	int status;

	status = decode_op_hdr(xdr, OP_SETATTR);
	if (status)
		return status;
B
Benny Halevy 已提交
5229 5230 5231
	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
5232
	bmlen = be32_to_cpup(p);
B
Benny Halevy 已提交
5233 5234 5235 5236 5237 5238
	p = xdr_inline_decode(xdr, bmlen << 2);
	if (likely(p))
		return 0;
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
5239 5240
}

5241
static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
L
Linus Torvalds 已提交
5242
{
A
Al Viro 已提交
5243
	__be32 *p;
L
Linus Torvalds 已提交
5244 5245 5246
	uint32_t opnum;
	int32_t nfserr;

B
Benny Halevy 已提交
5247 5248 5249
	p = xdr_inline_decode(xdr, 8);
	if (unlikely(!p))
		goto out_overflow;
B
Benny Halevy 已提交
5250
	opnum = be32_to_cpup(p++);
L
Linus Torvalds 已提交
5251
	if (opnum != OP_SETCLIENTID) {
5252
		dprintk("nfs: decode_setclientid: Server returned operation"
5253
			" %d\n", opnum);
L
Linus Torvalds 已提交
5254 5255
		return -EIO;
	}
5256
	nfserr = be32_to_cpup(p);
L
Linus Torvalds 已提交
5257
	if (nfserr == NFS_OK) {
B
Benny Halevy 已提交
5258 5259 5260
		p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
		if (unlikely(!p))
			goto out_overflow;
5261 5262
		p = xdr_decode_hyper(p, &res->clientid);
		memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
L
Linus Torvalds 已提交
5263 5264 5265 5266
	} else if (nfserr == NFSERR_CLID_INUSE) {
		uint32_t len;

		/* skip netid string */
B
Benny Halevy 已提交
5267 5268 5269
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
5270
		len = be32_to_cpup(p);
B
Benny Halevy 已提交
5271 5272 5273
		p = xdr_inline_decode(xdr, len);
		if (unlikely(!p))
			goto out_overflow;
L
Linus Torvalds 已提交
5274 5275

		/* skip uaddr string */
B
Benny Halevy 已提交
5276 5277 5278
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
5279
		len = be32_to_cpup(p);
B
Benny Halevy 已提交
5280 5281 5282
		p = xdr_inline_decode(xdr, len);
		if (unlikely(!p))
			goto out_overflow;
L
Linus Torvalds 已提交
5283 5284
		return -NFSERR_CLID_INUSE;
	} else
5285
		return nfs4_stat_to_errno(nfserr);
L
Linus Torvalds 已提交
5286 5287

	return 0;
B
Benny Halevy 已提交
5288 5289 5290
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
5291 5292 5293 5294 5295 5296 5297
}

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

5298
static int decode_write(struct xdr_stream *xdr, struct nfs_pgio_res *res)
L
Linus Torvalds 已提交
5299
{
A
Al Viro 已提交
5300
	__be32 *p;
L
Linus Torvalds 已提交
5301 5302 5303 5304 5305 5306
	int status;

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

5307
	p = xdr_inline_decode(xdr, 8);
B
Benny Halevy 已提交
5308 5309
	if (unlikely(!p))
		goto out_overflow;
B
Benny Halevy 已提交
5310 5311
	res->count = be32_to_cpup(p++);
	res->verf->committed = be32_to_cpup(p++);
5312
	return decode_write_verifier(xdr, &res->verf->verifier);
B
Benny Halevy 已提交
5313 5314 5315
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
L
Linus Torvalds 已提交
5316 5317 5318 5319 5320 5321 5322
}

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

5323 5324
static int decode_secinfo_gss(struct xdr_stream *xdr,
			      struct nfs4_secinfo4 *flavor)
B
Bryan Schumaker 已提交
5325
{
5326
	u32 oid_len;
B
Bryan Schumaker 已提交
5327 5328 5329 5330 5331
	__be32 *p;

	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
5332 5333
	oid_len = be32_to_cpup(p);
	if (oid_len > GSS_OID_MAX_LEN)
B
Bryan Schumaker 已提交
5334 5335
		goto out_err;

5336
	p = xdr_inline_decode(xdr, oid_len);
B
Bryan Schumaker 已提交
5337 5338
	if (unlikely(!p))
		goto out_overflow;
5339 5340
	memcpy(flavor->flavor_info.oid.data, p, oid_len);
	flavor->flavor_info.oid.len = oid_len;
B
Bryan Schumaker 已提交
5341 5342 5343 5344

	p = xdr_inline_decode(xdr, 8);
	if (unlikely(!p))
		goto out_overflow;
5345 5346
	flavor->flavor_info.qop = be32_to_cpup(p++);
	flavor->flavor_info.service = be32_to_cpup(p);
B
Bryan Schumaker 已提交
5347 5348 5349 5350 5351 5352 5353 5354 5355 5356

	return 0;

out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
out_err:
	return -EINVAL;
}

B
Bryan Schumaker 已提交
5357
static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
B
Bryan Schumaker 已提交
5358
{
5359 5360
	struct nfs4_secinfo4 *sec_flavor;
	unsigned int i, num_flavors;
B
Bryan Schumaker 已提交
5361 5362 5363 5364 5365 5366 5367
	int status;
	__be32 *p;

	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;

5368 5369 5370 5371
	res->flavors->num_flavors = 0;
	num_flavors = be32_to_cpup(p);

	for (i = 0; i < num_flavors; i++) {
B
Bryan Schumaker 已提交
5372
		sec_flavor = &res->flavors->flavors[i];
5373
		if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
B
Bryan Schumaker 已提交
5374 5375 5376 5377 5378 5379 5380 5381
			break;

		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
		sec_flavor->flavor = be32_to_cpup(p);

		if (sec_flavor->flavor == RPC_AUTH_GSS) {
5382 5383 5384
			status = decode_secinfo_gss(xdr, sec_flavor);
			if (status)
				goto out;
B
Bryan Schumaker 已提交
5385
		}
5386
		res->flavors->num_flavors++;
B
Bryan Schumaker 已提交
5387 5388
	}

B
Bryan Schumaker 已提交
5389
	status = 0;
5390 5391
out:
	return status;
B
Bryan Schumaker 已提交
5392 5393 5394 5395 5396
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
}

B
Bryan Schumaker 已提交
5397 5398 5399 5400 5401 5402 5403 5404
static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
{
	int status = decode_op_hdr(xdr, OP_SECINFO);
	if (status)
		return status;
	return decode_secinfo_common(xdr, res);
}

B
Benny Halevy 已提交
5405
#if defined(CONFIG_NFS_V4_1)
B
Bryan Schumaker 已提交
5406 5407 5408 5409 5410 5411 5412 5413
static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
{
	int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
	if (status)
		return status;
	return decode_secinfo_common(xdr, res);
}

5414 5415 5416 5417 5418 5419 5420 5421 5422 5423 5424 5425 5426 5427 5428 5429 5430
static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
{
	__be32 *p;
	uint32_t bitmap_words;
	unsigned int i;

	p = xdr_inline_decode(xdr, 4);
	bitmap_words = be32_to_cpup(p++);
	if (bitmap_words > NFS4_OP_MAP_NUM_WORDS)
		return -EIO;
	p = xdr_inline_decode(xdr, 4 * bitmap_words);
	for (i = 0; i < bitmap_words; i++)
		op_map->u.words[i] = be32_to_cpup(p++);

	return 0;
}

B
Benny Halevy 已提交
5431 5432 5433 5434 5435
static int decode_exchange_id(struct xdr_stream *xdr,
			      struct nfs41_exchange_id_res *res)
{
	__be32 *p;
	uint32_t dummy;
5436
	char *dummy_str;
B
Benny Halevy 已提交
5437
	int status;
5438
	uint32_t impl_id_count;
B
Benny Halevy 已提交
5439 5440 5441 5442 5443

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

B
Benny Halevy 已提交
5444 5445 5446
	p = xdr_inline_decode(xdr, 8);
	if (unlikely(!p))
		goto out_overflow;
5447
	xdr_decode_hyper(p, &res->clientid);
B
Benny Halevy 已提交
5448 5449 5450
	p = xdr_inline_decode(xdr, 12);
	if (unlikely(!p))
		goto out_overflow;
5451 5452
	res->seqid = be32_to_cpup(p++);
	res->flags = be32_to_cpup(p++);
B
Benny Halevy 已提交
5453

5454 5455 5456 5457 5458 5459 5460 5461 5462 5463 5464 5465 5466 5467
	res->state_protect.how = be32_to_cpup(p);
	switch (res->state_protect.how) {
	case SP4_NONE:
		break;
	case SP4_MACH_CRED:
		status = decode_op_map(xdr, &res->state_protect.enforce);
		if (status)
			return status;
		status = decode_op_map(xdr, &res->state_protect.allow);
		if (status)
			return status;
		break;
	default:
		WARN_ON_ONCE(1);
B
Benny Halevy 已提交
5468
		return -EIO;
5469
	}
B
Benny Halevy 已提交
5470

5471
	/* server_owner4.so_minor_id */
B
Benny Halevy 已提交
5472 5473 5474
	p = xdr_inline_decode(xdr, 8);
	if (unlikely(!p))
		goto out_overflow;
5475
	p = xdr_decode_hyper(p, &res->server_owner->minor_id);
B
Benny Halevy 已提交
5476

5477
	/* server_owner4.so_major_id */
5478 5479 5480
	status = decode_opaque_inline(xdr, &dummy, &dummy_str);
	if (unlikely(status))
		return status;
5481 5482 5483 5484
	if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
		return -EIO;
	memcpy(res->server_owner->major_id, dummy_str, dummy);
	res->server_owner->major_id_sz = dummy;
B
Benny Halevy 已提交
5485

5486
	/* server_scope4 */
5487 5488 5489
	status = decode_opaque_inline(xdr, &dummy, &dummy_str);
	if (unlikely(status))
		return status;
5490 5491 5492 5493 5494
	if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
		return -EIO;
	memcpy(res->server_scope->server_scope, dummy_str, dummy);
	res->server_scope->server_scope_sz = dummy;

5495 5496 5497 5498 5499
	/* Implementation Id */
	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
	impl_id_count = be32_to_cpup(p++);
B
Benny Halevy 已提交
5500

5501 5502 5503 5504 5505 5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 5521 5522 5523 5524 5525 5526
	if (impl_id_count) {
		/* nii_domain */
		status = decode_opaque_inline(xdr, &dummy, &dummy_str);
		if (unlikely(status))
			return status;
		if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
			return -EIO;
		memcpy(res->impl_id->domain, dummy_str, dummy);

		/* nii_name */
		status = decode_opaque_inline(xdr, &dummy, &dummy_str);
		if (unlikely(status))
			return status;
		if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
			return -EIO;
		memcpy(res->impl_id->name, dummy_str, dummy);

		/* nii_date */
		p = xdr_inline_decode(xdr, 12);
		if (unlikely(!p))
			goto out_overflow;
		p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
		res->impl_id->date.nseconds = be32_to_cpup(p);

		/* if there's more than one entry, ignore the rest */
	}
B
Benny Halevy 已提交
5527
	return 0;
B
Benny Halevy 已提交
5528 5529 5530
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
B
Benny Halevy 已提交
5531
}
A
Andy Adamson 已提交
5532 5533 5534 5535 5536

static int decode_chan_attrs(struct xdr_stream *xdr,
			     struct nfs4_channel_attrs *attrs)
{
	__be32 *p;
5537
	u32 nr_attrs, val;
A
Andy Adamson 已提交
5538

B
Benny Halevy 已提交
5539 5540 5541
	p = xdr_inline_decode(xdr, 28);
	if (unlikely(!p))
		goto out_overflow;
5542 5543 5544
	val = be32_to_cpup(p++);	/* headerpadsz */
	if (val)
		return -EINVAL;		/* no support for header padding yet */
B
Benny Halevy 已提交
5545 5546 5547 5548 5549
	attrs->max_rqst_sz = be32_to_cpup(p++);
	attrs->max_resp_sz = be32_to_cpup(p++);
	attrs->max_resp_sz_cached = be32_to_cpup(p++);
	attrs->max_ops = be32_to_cpup(p++);
	attrs->max_reqs = be32_to_cpup(p++);
5550
	nr_attrs = be32_to_cpup(p);
A
Andy Adamson 已提交
5551
	if (unlikely(nr_attrs > 1)) {
5552 5553
		printk(KERN_WARNING "NFS: %s: Invalid rdma channel attrs "
			"count %u\n", __func__, nr_attrs);
A
Andy Adamson 已提交
5554 5555
		return -EINVAL;
	}
B
Benny Halevy 已提交
5556 5557 5558 5559 5560
	if (nr_attrs == 1) {
		p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
		if (unlikely(!p))
			goto out_overflow;
	}
A
Andy Adamson 已提交
5561
	return 0;
B
Benny Halevy 已提交
5562 5563 5564
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
A
Andy Adamson 已提交
5565 5566
}

5567 5568 5569
static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
{
	return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
A
Andy Adamson 已提交
5570 5571
}

5572 5573 5574 5575 5576 5577 5578 5579 5580 5581 5582 5583 5584 5585 5586 5587 5588 5589 5590 5591 5592 5593 5594 5595 5596 5597 5598 5599 5600 5601 5602
static int decode_bind_conn_to_session(struct xdr_stream *xdr,
				struct nfs41_bind_conn_to_session_res *res)
{
	__be32 *p;
	int status;

	status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
	if (!status)
		status = decode_sessionid(xdr, &res->session->sess_id);
	if (unlikely(status))
		return status;

	/* dir flags, rdma mode bool */
	p = xdr_inline_decode(xdr, 8);
	if (unlikely(!p))
		goto out_overflow;

	res->dir = be32_to_cpup(p++);
	if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
		return -EIO;
	if (be32_to_cpup(p) == 0)
		res->use_conn_in_rdma_mode = false;
	else
		res->use_conn_in_rdma_mode = true;

	return 0;
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
}

A
Andy Adamson 已提交
5603 5604 5605 5606 5607 5608 5609 5610 5611
static int decode_create_session(struct xdr_stream *xdr,
				 struct nfs41_create_session_res *res)
{
	__be32 *p;
	int status;
	struct nfs_client *clp = res->client;
	struct nfs4_session *session = clp->cl_session;

	status = decode_op_hdr(xdr, OP_CREATE_SESSION);
5612 5613 5614
	if (!status)
		status = decode_sessionid(xdr, &session->sess_id);
	if (unlikely(status))
A
Andy Adamson 已提交
5615 5616 5617
		return status;

	/* seqid, flags */
B
Benny Halevy 已提交
5618 5619 5620
	p = xdr_inline_decode(xdr, 8);
	if (unlikely(!p))
		goto out_overflow;
B
Benny Halevy 已提交
5621
	clp->cl_seqid = be32_to_cpup(p++);
5622
	session->flags = be32_to_cpup(p);
A
Andy Adamson 已提交
5623 5624 5625 5626 5627 5628

	/* Channel attributes */
	status = decode_chan_attrs(xdr, &session->fc_attrs);
	if (!status)
		status = decode_chan_attrs(xdr, &session->bc_attrs);
	return status;
B
Benny Halevy 已提交
5629 5630 5631
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
A
Andy Adamson 已提交
5632
}
A
Andy Adamson 已提交
5633 5634 5635 5636 5637

static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
{
	return decode_op_hdr(xdr, OP_DESTROY_SESSION);
}
5638

T
Trond Myklebust 已提交
5639 5640 5641 5642 5643
static int decode_destroy_clientid(struct xdr_stream *xdr, void *dummy)
{
	return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
}

5644 5645 5646 5647
static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
{
	return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
}
B
Benny Halevy 已提交
5648 5649
#endif /* CONFIG_NFS_V4_1 */

5650 5651 5652 5653 5654
static int decode_sequence(struct xdr_stream *xdr,
			   struct nfs4_sequence_res *res,
			   struct rpc_rqst *rqstp)
{
#if defined(CONFIG_NFS_V4_1)
5655
	struct nfs4_session *session;
A
Andy Adamson 已提交
5656 5657 5658 5659 5660
	struct nfs4_sessionid id;
	u32 dummy;
	int status;
	__be32 *p;

5661
	if (res->sr_slot == NULL)
5662
		return 0;
C
Chuck Lever 已提交
5663 5664
	if (!res->sr_slot->table->session)
		return 0;
5665

A
Andy Adamson 已提交
5666
	status = decode_op_hdr(xdr, OP_SEQUENCE);
5667 5668 5669
	if (!status)
		status = decode_sessionid(xdr, &id);
	if (unlikely(status))
A
Andy Adamson 已提交
5670
		goto out_err;
5671

A
Andy Adamson 已提交
5672 5673 5674 5675
	/*
	 * If the server returns different values for sessionID, slotID or
	 * sequence number, the server is looney tunes.
	 */
5676
	status = -EREMOTEIO;
5677
	session = res->sr_slot->table->session;
A
Andy Adamson 已提交
5678

5679
	if (memcmp(id.data, session->sess_id.data,
A
Andy Adamson 已提交
5680 5681 5682 5683
		   NFS4_MAX_SESSIONID_LEN)) {
		dprintk("%s Invalid session id\n", __func__);
		goto out_err;
	}
5684

B
Benny Halevy 已提交
5685 5686 5687
	p = xdr_inline_decode(xdr, 20);
	if (unlikely(!p))
		goto out_overflow;
5688

A
Andy Adamson 已提交
5689
	/* seqid */
B
Benny Halevy 已提交
5690
	dummy = be32_to_cpup(p++);
5691
	if (dummy != res->sr_slot->seq_nr) {
A
Andy Adamson 已提交
5692 5693 5694 5695
		dprintk("%s Invalid sequence number\n", __func__);
		goto out_err;
	}
	/* slot id */
B
Benny Halevy 已提交
5696
	dummy = be32_to_cpup(p++);
5697
	if (dummy != res->sr_slot->slot_nr) {
A
Andy Adamson 已提交
5698 5699 5700
		dprintk("%s Invalid slot id\n", __func__);
		goto out_err;
	}
5701 5702
	/* highest slot id */
	res->sr_highest_slotid = be32_to_cpup(p++);
5703 5704
	/* target highest slot id */
	res->sr_target_highest_slotid = be32_to_cpup(p++);
5705 5706
	/* result flags */
	res->sr_status_flags = be32_to_cpup(p);
A
Andy Adamson 已提交
5707 5708 5709 5710
	status = 0;
out_err:
	res->sr_status = status;
	return status;
B
Benny Halevy 已提交
5711 5712 5713 5714
out_overflow:
	print_overflow_msg(__func__, xdr);
	status = -EIO;
	goto out_err;
A
Andy Adamson 已提交
5715
#else  /* CONFIG_NFS_V4_1 */
5716
	return 0;
A
Andy Adamson 已提交
5717
#endif /* CONFIG_NFS_V4_1 */
5718 5719
}

5720 5721 5722 5723 5724 5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736 5737 5738 5739 5740 5741 5742 5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753 5754 5755
#if defined(CONFIG_NFS_V4_1)
static int decode_getdeviceinfo(struct xdr_stream *xdr,
				struct pnfs_device *pdev)
{
	__be32 *p;
	uint32_t len, type;
	int status;

	status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
	if (status) {
		if (status == -ETOOSMALL) {
			p = xdr_inline_decode(xdr, 4);
			if (unlikely(!p))
				goto out_overflow;
			pdev->mincount = be32_to_cpup(p);
			dprintk("%s: Min count too small. mincnt = %u\n",
				__func__, pdev->mincount);
		}
		return status;
	}

	p = xdr_inline_decode(xdr, 8);
	if (unlikely(!p))
		goto out_overflow;
	type = be32_to_cpup(p++);
	if (type != pdev->layout_type) {
		dprintk("%s: layout mismatch req: %u pdev: %u\n",
			__func__, pdev->layout_type, type);
		return -EINVAL;
	}
	/*
	 * Get the length of the opaque device_addr4. xdr_read_pages places
	 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
	 * and places the remaining xdr data in xdr_buf->tail
	 */
	pdev->mincount = be32_to_cpup(p);
5756 5757
	if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
		goto out_overflow;
5758 5759 5760 5761 5762 5763 5764

	/* Parse notification bitmap, verifying that it is zero. */
	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
	len = be32_to_cpup(p);
	if (len) {
5765
		uint32_t i;
5766 5767 5768 5769 5770 5771 5772 5773 5774 5775 5776 5777 5778 5779 5780 5781 5782 5783 5784 5785 5786 5787 5788 5789

		p = xdr_inline_decode(xdr, 4 * len);
		if (unlikely(!p))
			goto out_overflow;
		for (i = 0; i < len; i++, p++) {
			if (be32_to_cpup(p)) {
				dprintk("%s: notifications not supported\n",
					__func__);
				return -EIO;
			}
		}
	}
	return 0;
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
}

static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
			    struct nfs4_layoutget_res *res)
{
	__be32 *p;
	int status;
	u32 layout_count;
5790
	u32 recvd;
5791 5792 5793 5794

	status = decode_op_hdr(xdr, OP_LAYOUTGET);
	if (status)
		return status;
5795 5796 5797 5798 5799 5800
	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
	res->return_on_close = be32_to_cpup(p);
	decode_stateid(xdr, &res->stateid);
	p = xdr_inline_decode(xdr, 4);
5801 5802 5803 5804 5805 5806 5807 5808 5809
	if (unlikely(!p))
		goto out_overflow;
	layout_count = be32_to_cpup(p);
	if (!layout_count) {
		dprintk("%s: server responded with empty layout array\n",
			__func__);
		return -EINVAL;
	}

5810
	p = xdr_inline_decode(xdr, 28);
5811 5812 5813 5814 5815 5816
	if (unlikely(!p))
		goto out_overflow;
	p = xdr_decode_hyper(p, &res->range.offset);
	p = xdr_decode_hyper(p, &res->range.length);
	res->range.iomode = be32_to_cpup(p++);
	res->type = be32_to_cpup(p++);
5817
	res->layoutp->len = be32_to_cpup(p);
5818 5819 5820 5821 5822 5823 5824

	dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
		__func__,
		(unsigned long)res->range.offset,
		(unsigned long)res->range.length,
		res->range.iomode,
		res->type,
5825 5826
		res->layoutp->len);

5827
	recvd = xdr_read_pages(xdr, res->layoutp->len);
5828 5829 5830 5831 5832 5833
	if (res->layoutp->len > recvd) {
		dprintk("NFS: server cheating in layoutget reply: "
				"layout len %u > recvd %u\n",
				res->layoutp->len, recvd);
		return -EINVAL;
	}
5834 5835 5836 5837 5838 5839 5840 5841 5842 5843 5844 5845 5846 5847 5848 5849

	if (layout_count > 1) {
		/* We only handle a length one array at the moment.  Any
		 * further entries are just ignored.  Note that this means
		 * the client may see a response that is less than the
		 * minimum it requested.
		 */
		dprintk("%s: server responded with %d layouts, dropping tail\n",
			__func__, layout_count);
	}

	return 0;
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
}
A
Andy Adamson 已提交
5850

B
Benny Halevy 已提交
5851 5852 5853 5854 5855 5856 5857 5858 5859 5860 5861 5862 5863 5864 5865 5866 5867 5868 5869 5870 5871
static int decode_layoutreturn(struct xdr_stream *xdr,
			       struct nfs4_layoutreturn_res *res)
{
	__be32 *p;
	int status;

	status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
	if (status)
		return status;
	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
	res->lrs_present = be32_to_cpup(p);
	if (res->lrs_present)
		status = decode_stateid(xdr, &res->stateid);
	return status;
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
}

A
Andy Adamson 已提交
5872 5873 5874 5875 5876 5877 5878 5879 5880
static int decode_layoutcommit(struct xdr_stream *xdr,
			       struct rpc_rqst *req,
			       struct nfs4_layoutcommit_res *res)
{
	__be32 *p;
	__u32 sizechanged;
	int status;

	status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
A
Andy Adamson 已提交
5881
	res->status = status;
A
Andy Adamson 已提交
5882 5883 5884 5885 5886 5887 5888 5889 5890 5891 5892 5893 5894 5895 5896 5897 5898 5899 5900
	if (status)
		return status;

	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
	sizechanged = be32_to_cpup(p);

	if (sizechanged) {
		/* throw away new size */
		p = xdr_inline_decode(xdr, 8);
		if (unlikely(!p))
			goto out_overflow;
	}
	return 0;
out_overflow:
	print_overflow_msg(__func__, xdr);
	return -EIO;
}
B
Bryan Schumaker 已提交
5901 5902 5903 5904 5905 5906 5907 5908 5909 5910 5911 5912 5913 5914 5915 5916 5917 5918 5919 5920 5921 5922 5923

static int decode_test_stateid(struct xdr_stream *xdr,
			       struct nfs41_test_stateid_res *res)
{
	__be32 *p;
	int status;
	int num_res;

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

	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
	num_res = be32_to_cpup(p++);
	if (num_res != 1)
		goto out;

	p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
	res->status = be32_to_cpup(p++);
5924 5925

	return status;
B
Bryan Schumaker 已提交
5926 5927 5928 5929 5930
out_overflow:
	print_overflow_msg(__func__, xdr);
out:
	return -EIO;
}
B
Bryan Schumaker 已提交
5931 5932 5933 5934

static int decode_free_stateid(struct xdr_stream *xdr,
			       struct nfs41_free_stateid_res *res)
{
A
Andy Adamson 已提交
5935
	res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
B
Bryan Schumaker 已提交
5936 5937
	return res->status;
}
5938 5939
#endif /* CONFIG_NFS_V4_1 */

5940 5941 5942 5943
/*
 * END OF "GENERIC" DECODE ROUTINES.
 */

L
Linus Torvalds 已提交
5944 5945 5946
/*
 * Decode OPEN_DOWNGRADE response
 */
5947 5948 5949
static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
				       struct xdr_stream *xdr,
				       struct nfs_closeres *res)
L
Linus Torvalds 已提交
5950
{
A
Andy Adamson 已提交
5951 5952 5953
	struct compound_hdr hdr;
	int status;

5954
	status = decode_compound_hdr(xdr, &hdr);
5955 5956
	if (status)
		goto out;
5957
	status = decode_sequence(xdr, &res->seq_res, rqstp);
A
Andy Adamson 已提交
5958 5959
	if (status)
		goto out;
5960
	status = decode_putfh(xdr);
A
Andy Adamson 已提交
5961 5962
	if (status)
		goto out;
5963
	status = decode_open_downgrade(xdr, res);
5964 5965
	if (status != 0)
		goto out;
5966
	decode_getfattr(xdr, res->fattr, res->server);
L
Linus Torvalds 已提交
5967
out:
A
Andy Adamson 已提交
5968
	return status;
L
Linus Torvalds 已提交
5969 5970 5971 5972 5973
}

/*
 * Decode ACCESS response
 */
5974 5975
static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
			       struct nfs4_accessres *res)
L
Linus Torvalds 已提交
5976 5977 5978
{
	struct compound_hdr hdr;
	int status;
5979

5980
	status = decode_compound_hdr(xdr, &hdr);
5981 5982
	if (status)
		goto out;
5983
	status = decode_sequence(xdr, &res->seq_res, rqstp);
5984
	if (status)
L
Linus Torvalds 已提交
5985
		goto out;
5986
	status = decode_putfh(xdr);
5987 5988
	if (status != 0)
		goto out;
5989
	status = decode_access(xdr, &res->supported, &res->access);
5990 5991
	if (status != 0)
		goto out;
5992
	decode_getfattr(xdr, res->fattr, res->server);
L
Linus Torvalds 已提交
5993 5994 5995 5996 5997 5998 5999
out:
	return status;
}

/*
 * Decode LOOKUP response
 */
6000 6001
static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
			       struct nfs4_lookup_res *res)
L
Linus Torvalds 已提交
6002 6003 6004
{
	struct compound_hdr hdr;
	int status;
6005

6006
	status = decode_compound_hdr(xdr, &hdr);
6007 6008
	if (status)
		goto out;
6009
	status = decode_sequence(xdr, &res->seq_res, rqstp);
6010
	if (status)
L
Linus Torvalds 已提交
6011
		goto out;
6012 6013
	status = decode_putfh(xdr);
	if (status)
L
Linus Torvalds 已提交
6014
		goto out;
6015 6016
	status = decode_lookup(xdr);
	if (status)
L
Linus Torvalds 已提交
6017
		goto out;
6018 6019
	status = decode_getfh(xdr, res->fh);
	if (status)
L
Linus Torvalds 已提交
6020
		goto out;
6021
	status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
L
Linus Torvalds 已提交
6022 6023 6024 6025 6026 6027 6028
out:
	return status;
}

/*
 * Decode LOOKUP_ROOT response
 */
6029 6030 6031
static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
				    struct xdr_stream *xdr,
				    struct nfs4_lookup_res *res)
L
Linus Torvalds 已提交
6032 6033 6034
{
	struct compound_hdr hdr;
	int status;
6035

6036
	status = decode_compound_hdr(xdr, &hdr);
6037 6038
	if (status)
		goto out;
6039
	status = decode_sequence(xdr, &res->seq_res, rqstp);
6040
	if (status)
L
Linus Torvalds 已提交
6041
		goto out;
6042 6043
	status = decode_putrootfh(xdr);
	if (status)
L
Linus Torvalds 已提交
6044
		goto out;
6045 6046
	status = decode_getfh(xdr, res->fh);
	if (status == 0)
6047 6048
		status = decode_getfattr_label(xdr, res->fattr,
						res->label, res->server);
L
Linus Torvalds 已提交
6049 6050 6051 6052 6053 6054 6055
out:
	return status;
}

/*
 * Decode REMOVE response
 */
6056 6057
static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
			       struct nfs_removeres *res)
L
Linus Torvalds 已提交
6058 6059 6060
{
	struct compound_hdr hdr;
	int status;
6061

6062
	status = decode_compound_hdr(xdr, &hdr);
6063 6064
	if (status)
		goto out;
6065
	status = decode_sequence(xdr, &res->seq_res, rqstp);
6066
	if (status)
L
Linus Torvalds 已提交
6067
		goto out;
6068 6069
	status = decode_putfh(xdr);
	if (status)
6070
		goto out;
6071
	status = decode_remove(xdr, &res->cinfo);
L
Linus Torvalds 已提交
6072 6073 6074 6075 6076 6077 6078
out:
	return status;
}

/*
 * Decode RENAME response
 */
6079 6080
static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
			       struct nfs_renameres *res)
L
Linus Torvalds 已提交
6081 6082 6083
{
	struct compound_hdr hdr;
	int status;
6084

6085
	status = decode_compound_hdr(xdr, &hdr);
6086 6087
	if (status)
		goto out;
6088
	status = decode_sequence(xdr, &res->seq_res, rqstp);
6089
	if (status)
L
Linus Torvalds 已提交
6090
		goto out;
6091 6092
	status = decode_putfh(xdr);
	if (status)
L
Linus Torvalds 已提交
6093
		goto out;
6094 6095
	status = decode_savefh(xdr);
	if (status)
L
Linus Torvalds 已提交
6096
		goto out;
6097 6098
	status = decode_putfh(xdr);
	if (status)
L
Linus Torvalds 已提交
6099
		goto out;
6100
	status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
L
Linus Torvalds 已提交
6101 6102 6103 6104 6105 6106 6107
out:
	return status;
}

/*
 * Decode LINK response
 */
6108 6109
static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
			     struct nfs4_link_res *res)
L
Linus Torvalds 已提交
6110 6111 6112
{
	struct compound_hdr hdr;
	int status;
6113

6114
	status = decode_compound_hdr(xdr, &hdr);
6115 6116
	if (status)
		goto out;
6117
	status = decode_sequence(xdr, &res->seq_res, rqstp);
6118
	if (status)
L
Linus Torvalds 已提交
6119
		goto out;
6120 6121
	status = decode_putfh(xdr);
	if (status)
L
Linus Torvalds 已提交
6122
		goto out;
6123 6124
	status = decode_savefh(xdr);
	if (status)
L
Linus Torvalds 已提交
6125
		goto out;
6126 6127
	status = decode_putfh(xdr);
	if (status)
L
Linus Torvalds 已提交
6128
		goto out;
6129 6130
	status = decode_link(xdr, &res->cinfo);
	if (status)
6131 6132 6133 6134 6135
		goto out;
	/*
	 * Note order: OP_LINK leaves the directory as the current
	 *             filehandle.
	 */
6136 6137
	status = decode_restorefh(xdr);
	if (status)
6138
		goto out;
6139
	decode_getfattr_label(xdr, res->fattr, res->label, res->server);
L
Linus Torvalds 已提交
6140 6141 6142 6143 6144 6145 6146
out:
	return status;
}

/*
 * Decode CREATE response
 */
6147 6148
static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
			       struct nfs4_create_res *res)
L
Linus Torvalds 已提交
6149 6150 6151
{
	struct compound_hdr hdr;
	int status;
6152

6153
	status = decode_compound_hdr(xdr, &hdr);
6154 6155
	if (status)
		goto out;
6156
	status = decode_sequence(xdr, &res->seq_res, rqstp);
6157
	if (status)
L
Linus Torvalds 已提交
6158
		goto out;
6159 6160
	status = decode_putfh(xdr);
	if (status)
6161
		goto out;
6162 6163
	status = decode_create(xdr, &res->dir_cinfo);
	if (status)
L
Linus Torvalds 已提交
6164
		goto out;
6165 6166
	status = decode_getfh(xdr, res->fh);
	if (status)
L
Linus Torvalds 已提交
6167
		goto out;
6168
	decode_getfattr_label(xdr, res->fattr, res->label, res->server);
L
Linus Torvalds 已提交
6169 6170 6171 6172 6173 6174 6175
out:
	return status;
}

/*
 * Decode SYMLINK response
 */
6176 6177
static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
				struct nfs4_create_res *res)
L
Linus Torvalds 已提交
6178
{
6179
	return nfs4_xdr_dec_create(rqstp, xdr, res);
L
Linus Torvalds 已提交
6180 6181 6182 6183 6184
}

/*
 * Decode GETATTR response
 */
6185 6186
static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
				struct nfs4_getattr_res *res)
L
Linus Torvalds 已提交
6187 6188 6189
{
	struct compound_hdr hdr;
	int status;
6190

6191
	status = decode_compound_hdr(xdr, &hdr);
6192 6193
	if (status)
		goto out;
6194
	status = decode_sequence(xdr, &res->seq_res, rqstp);
L
Linus Torvalds 已提交
6195 6196
	if (status)
		goto out;
6197
	status = decode_putfh(xdr);
L
Linus Torvalds 已提交
6198 6199
	if (status)
		goto out;
6200
	status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
L
Linus Torvalds 已提交
6201 6202 6203 6204
out:
	return status;
}

6205 6206 6207
/*
 * Encode an SETACL request
 */
6208 6209
static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
				struct nfs_setaclargs *args)
6210
{
A
Andy Adamson 已提交
6211
	struct compound_hdr hdr = {
6212
		.minorversion = nfs4_xdr_minorversion(&args->seq_args),
A
Andy Adamson 已提交
6213 6214
	};

6215 6216 6217 6218
	encode_compound_hdr(xdr, req, &hdr);
	encode_sequence(xdr, &args->seq_args, &hdr);
	encode_putfh(xdr, args->fh, &hdr);
	encode_setacl(xdr, args, &hdr);
6219
	encode_nops(&hdr);
6220
}
A
Andy Adamson 已提交
6221

6222 6223 6224 6225
/*
 * Decode SETACL response
 */
static int
6226
nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
B
Benny Halevy 已提交
6227
		    struct nfs_setaclres *res)
6228 6229 6230 6231
{
	struct compound_hdr hdr;
	int status;

6232
	status = decode_compound_hdr(xdr, &hdr);
6233 6234
	if (status)
		goto out;
6235
	status = decode_sequence(xdr, &res->seq_res, rqstp);
6236 6237
	if (status)
		goto out;
6238
	status = decode_putfh(xdr);
6239 6240
	if (status)
		goto out;
6241
	status = decode_setattr(xdr);
6242 6243 6244
out:
	return status;
}
L
Linus Torvalds 已提交
6245

6246 6247 6248 6249
/*
 * Decode GETACL response
 */
static int
6250
nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
B
Benny Halevy 已提交
6251
		    struct nfs_getaclres *res)
6252 6253 6254 6255
{
	struct compound_hdr hdr;
	int status;

6256 6257 6258 6259
	if (res->acl_scratch != NULL) {
		void *p = page_address(res->acl_scratch);
		xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
	}
6260
	status = decode_compound_hdr(xdr, &hdr);
6261 6262
	if (status)
		goto out;
6263
	status = decode_sequence(xdr, &res->seq_res, rqstp);
6264 6265
	if (status)
		goto out;
6266
	status = decode_putfh(xdr);
6267 6268
	if (status)
		goto out;
6269
	status = decode_getacl(xdr, rqstp, res);
6270 6271 6272 6273 6274

out:
	return status;
}

L
Linus Torvalds 已提交
6275 6276 6277
/*
 * Decode CLOSE response
 */
6278 6279
static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
			      struct nfs_closeres *res)
L
Linus Torvalds 已提交
6280
{
A
Andy Adamson 已提交
6281 6282 6283
	struct compound_hdr hdr;
	int status;

6284
	status = decode_compound_hdr(xdr, &hdr);
6285 6286
	if (status)
		goto out;
6287
	status = decode_sequence(xdr, &res->seq_res, rqstp);
A
Andy Adamson 已提交
6288 6289
	if (status)
		goto out;
6290
	status = decode_putfh(xdr);
A
Andy Adamson 已提交
6291 6292
	if (status)
		goto out;
6293
	status = decode_close(xdr, res);
6294 6295 6296 6297 6298 6299 6300 6301
	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.
	 */
6302
	decode_getfattr(xdr, res->fattr, res->server);
L
Linus Torvalds 已提交
6303
out:
A
Andy Adamson 已提交
6304
	return status;
L
Linus Torvalds 已提交
6305 6306 6307 6308 6309
}

/*
 * Decode OPEN response
 */
6310 6311
static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
			     struct nfs_openres *res)
L
Linus Torvalds 已提交
6312
{
A
Andy Adamson 已提交
6313 6314 6315
	struct compound_hdr hdr;
	int status;

6316
	status = decode_compound_hdr(xdr, &hdr);
6317 6318
	if (status)
		goto out;
6319
	status = decode_sequence(xdr, &res->seq_res, rqstp);
A
Andy Adamson 已提交
6320 6321
	if (status)
		goto out;
6322
	status = decode_putfh(xdr);
A
Andy Adamson 已提交
6323 6324
	if (status)
		goto out;
6325
	status = decode_open(xdr, res);
6326 6327
	if (status)
		goto out;
6328 6329
	status = decode_getfh(xdr, &res->fh);
	if (status)
L
Linus Torvalds 已提交
6330
		goto out;
6331 6332
	if (res->access_request)
		decode_access(xdr, &res->access_supported, &res->access_result);
6333
	decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server);
L
Linus Torvalds 已提交
6334
out:
A
Andy Adamson 已提交
6335
	return status;
L
Linus Torvalds 已提交
6336 6337 6338 6339 6340
}

/*
 * Decode OPEN_CONFIRM response
 */
6341 6342 6343
static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
				     struct xdr_stream *xdr,
				     struct nfs_open_confirmres *res)
L
Linus Torvalds 已提交
6344
{
A
Andy Adamson 已提交
6345 6346 6347
	struct compound_hdr hdr;
	int status;

6348
	status = decode_compound_hdr(xdr, &hdr);
A
Andy Adamson 已提交
6349 6350
	if (status)
		goto out;
6351
	status = decode_putfh(xdr);
A
Andy Adamson 已提交
6352 6353
	if (status)
		goto out;
6354
	status = decode_open_confirm(xdr, res);
L
Linus Torvalds 已提交
6355
out:
A
Andy Adamson 已提交
6356
	return status;
L
Linus Torvalds 已提交
6357 6358 6359 6360 6361
}

/*
 * Decode OPEN response
 */
6362 6363 6364
static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
				    struct xdr_stream *xdr,
				    struct nfs_openres *res)
L
Linus Torvalds 已提交
6365
{
A
Andy Adamson 已提交
6366 6367 6368
	struct compound_hdr hdr;
	int status;

6369
	status = decode_compound_hdr(xdr, &hdr);
6370 6371
	if (status)
		goto out;
6372
	status = decode_sequence(xdr, &res->seq_res, rqstp);
A
Andy Adamson 已提交
6373 6374
	if (status)
		goto out;
6375
	status = decode_putfh(xdr);
A
Andy Adamson 已提交
6376 6377
	if (status)
		goto out;
6378
	status = decode_open(xdr, res);
A
Andy Adamson 已提交
6379 6380
	if (status)
		goto out;
6381 6382
	if (res->access_request)
		decode_access(xdr, &res->access_supported, &res->access_result);
6383
	decode_getfattr(xdr, res->f_attr, res->server);
L
Linus Torvalds 已提交
6384
out:
A
Andy Adamson 已提交
6385
	return status;
L
Linus Torvalds 已提交
6386 6387 6388 6389 6390
}

/*
 * Decode SETATTR response
 */
6391 6392 6393
static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
				struct xdr_stream *xdr,
				struct nfs_setattrres *res)
L
Linus Torvalds 已提交
6394
{
A
Andy Adamson 已提交
6395 6396 6397
	struct compound_hdr hdr;
	int status;

6398
	status = decode_compound_hdr(xdr, &hdr);
6399 6400
	if (status)
		goto out;
6401
	status = decode_sequence(xdr, &res->seq_res, rqstp);
A
Andy Adamson 已提交
6402 6403
	if (status)
		goto out;
6404
	status = decode_putfh(xdr);
A
Andy Adamson 已提交
6405 6406
	if (status)
		goto out;
6407
	status = decode_setattr(xdr);
A
Andy Adamson 已提交
6408 6409
	if (status)
		goto out;
6410
	decode_getfattr_label(xdr, res->fattr, res->label, res->server);
L
Linus Torvalds 已提交
6411
out:
A
Andy Adamson 已提交
6412
	return status;
L
Linus Torvalds 已提交
6413 6414 6415 6416 6417
}

/*
 * Decode LOCK response
 */
6418 6419
static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
			     struct nfs_lock_res *res)
L
Linus Torvalds 已提交
6420 6421 6422 6423
{
	struct compound_hdr hdr;
	int status;

6424
	status = decode_compound_hdr(xdr, &hdr);
6425 6426
	if (status)
		goto out;
6427
	status = decode_sequence(xdr, &res->seq_res, rqstp);
L
Linus Torvalds 已提交
6428 6429
	if (status)
		goto out;
6430
	status = decode_putfh(xdr);
L
Linus Torvalds 已提交
6431 6432
	if (status)
		goto out;
6433
	status = decode_lock(xdr, res);
L
Linus Torvalds 已提交
6434 6435 6436 6437 6438 6439 6440
out:
	return status;
}

/*
 * Decode LOCKT response
 */
6441 6442
static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
			      struct nfs_lockt_res *res)
L
Linus Torvalds 已提交
6443 6444 6445 6446
{
	struct compound_hdr hdr;
	int status;

6447
	status = decode_compound_hdr(xdr, &hdr);
6448 6449
	if (status)
		goto out;
6450
	status = decode_sequence(xdr, &res->seq_res, rqstp);
L
Linus Torvalds 已提交
6451 6452
	if (status)
		goto out;
6453
	status = decode_putfh(xdr);
L
Linus Torvalds 已提交
6454 6455
	if (status)
		goto out;
6456
	status = decode_lockt(xdr, res);
L
Linus Torvalds 已提交
6457 6458 6459 6460 6461 6462 6463
out:
	return status;
}

/*
 * Decode LOCKU response
 */
6464 6465
static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
			      struct nfs_locku_res *res)
L
Linus Torvalds 已提交
6466 6467 6468 6469
{
	struct compound_hdr hdr;
	int status;

6470
	status = decode_compound_hdr(xdr, &hdr);
6471 6472
	if (status)
		goto out;
6473
	status = decode_sequence(xdr, &res->seq_res, rqstp);
L
Linus Torvalds 已提交
6474 6475
	if (status)
		goto out;
6476
	status = decode_putfh(xdr);
L
Linus Torvalds 已提交
6477 6478
	if (status)
		goto out;
6479
	status = decode_locku(xdr, res);
L
Linus Torvalds 已提交
6480 6481 6482 6483
out:
	return status;
}

6484 6485
static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
					  struct xdr_stream *xdr, void *dummy)
6486 6487 6488 6489
{
	struct compound_hdr hdr;
	int status;

6490
	status = decode_compound_hdr(xdr, &hdr);
6491
	if (!status)
6492
		status = decode_release_lockowner(xdr);
6493 6494 6495
	return status;
}

L
Linus Torvalds 已提交
6496 6497 6498
/*
 * Decode READLINK response
 */
6499 6500
static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
				 struct xdr_stream *xdr,
B
Benny Halevy 已提交
6501
				 struct nfs4_readlink_res *res)
L
Linus Torvalds 已提交
6502 6503 6504 6505
{
	struct compound_hdr hdr;
	int status;

6506
	status = decode_compound_hdr(xdr, &hdr);
6507 6508
	if (status)
		goto out;
6509
	status = decode_sequence(xdr, &res->seq_res, rqstp);
L
Linus Torvalds 已提交
6510 6511
	if (status)
		goto out;
6512
	status = decode_putfh(xdr);
L
Linus Torvalds 已提交
6513 6514
	if (status)
		goto out;
6515
	status = decode_readlink(xdr, rqstp);
L
Linus Torvalds 已提交
6516 6517 6518 6519 6520 6521 6522
out:
	return status;
}

/*
 * Decode READDIR response
 */
6523 6524
static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
				struct nfs4_readdir_res *res)
L
Linus Torvalds 已提交
6525 6526 6527 6528
{
	struct compound_hdr hdr;
	int status;

6529
	status = decode_compound_hdr(xdr, &hdr);
6530 6531
	if (status)
		goto out;
6532
	status = decode_sequence(xdr, &res->seq_res, rqstp);
L
Linus Torvalds 已提交
6533 6534
	if (status)
		goto out;
6535
	status = decode_putfh(xdr);
L
Linus Torvalds 已提交
6536 6537
	if (status)
		goto out;
6538
	status = decode_readdir(xdr, rqstp, res);
L
Linus Torvalds 已提交
6539 6540 6541 6542 6543 6544 6545
out:
	return status;
}

/*
 * Decode Read response
 */
6546
static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6547
			     struct nfs_pgio_res *res)
L
Linus Torvalds 已提交
6548 6549 6550 6551
{
	struct compound_hdr hdr;
	int status;

6552
	status = decode_compound_hdr(xdr, &hdr);
6553 6554
	if (status)
		goto out;
6555
	status = decode_sequence(xdr, &res->seq_res, rqstp);
L
Linus Torvalds 已提交
6556 6557
	if (status)
		goto out;
6558
	status = decode_putfh(xdr);
L
Linus Torvalds 已提交
6559 6560
	if (status)
		goto out;
6561
	status = decode_read(xdr, rqstp, res);
L
Linus Torvalds 已提交
6562 6563 6564 6565 6566 6567 6568 6569 6570
	if (!status)
		status = res->count;
out:
	return status;
}

/*
 * Decode WRITE response
 */
6571
static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6572
			      struct nfs_pgio_res *res)
L
Linus Torvalds 已提交
6573 6574 6575 6576
{
	struct compound_hdr hdr;
	int status;

6577
	status = decode_compound_hdr(xdr, &hdr);
6578 6579
	if (status)
		goto out;
6580
	status = decode_sequence(xdr, &res->seq_res, rqstp);
L
Linus Torvalds 已提交
6581 6582
	if (status)
		goto out;
6583
	status = decode_putfh(xdr);
L
Linus Torvalds 已提交
6584 6585
	if (status)
		goto out;
6586
	status = decode_write(xdr, res);
6587 6588
	if (status)
		goto out;
6589
	if (res->fattr)
6590
		decode_getfattr(xdr, res->fattr, res->server);
L
Linus Torvalds 已提交
6591 6592 6593 6594 6595 6596 6597 6598 6599
	if (!status)
		status = res->count;
out:
	return status;
}

/*
 * Decode COMMIT response
 */
6600
static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
6601
			       struct nfs_commitres *res)
L
Linus Torvalds 已提交
6602 6603 6604 6605
{
	struct compound_hdr hdr;
	int status;

6606
	status = decode_compound_hdr(xdr, &hdr);
6607 6608
	if (status)
		goto out;
6609
	status = decode_sequence(xdr, &res->seq_res, rqstp);
L
Linus Torvalds 已提交
6610 6611
	if (status)
		goto out;
6612
	status = decode_putfh(xdr);
L
Linus Torvalds 已提交
6613 6614
	if (status)
		goto out;
6615
	status = decode_commit(xdr, res);
L
Linus Torvalds 已提交
6616 6617 6618 6619 6620
out:
	return status;
}

/*
6621
 * Decode FSINFO response
L
Linus Torvalds 已提交
6622
 */
6623
static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
B
Benny Halevy 已提交
6624
			       struct nfs4_fsinfo_res *res)
L
Linus Torvalds 已提交
6625 6626 6627 6628
{
	struct compound_hdr hdr;
	int status;

6629
	status = decode_compound_hdr(xdr, &hdr);
6630
	if (!status)
6631
		status = decode_sequence(xdr, &res->seq_res, req);
L
Linus Torvalds 已提交
6632
	if (!status)
6633
		status = decode_putfh(xdr);
L
Linus Torvalds 已提交
6634
	if (!status)
6635
		status = decode_fsinfo(xdr, res->fsinfo);
L
Linus Torvalds 已提交
6636 6637 6638 6639
	return status;
}

/*
6640
 * Decode PATHCONF response
L
Linus Torvalds 已提交
6641
 */
6642
static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
B
Benny Halevy 已提交
6643
				 struct nfs4_pathconf_res *res)
L
Linus Torvalds 已提交
6644 6645 6646 6647
{
	struct compound_hdr hdr;
	int status;

6648
	status = decode_compound_hdr(xdr, &hdr);
6649
	if (!status)
6650
		status = decode_sequence(xdr, &res->seq_res, req);
L
Linus Torvalds 已提交
6651
	if (!status)
6652
		status = decode_putfh(xdr);
L
Linus Torvalds 已提交
6653
	if (!status)
6654
		status = decode_pathconf(xdr, res->pathconf);
L
Linus Torvalds 已提交
6655 6656 6657 6658
	return status;
}

/*
6659
 * Decode STATFS response
L
Linus Torvalds 已提交
6660
 */
6661
static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
B
Benny Halevy 已提交
6662
			       struct nfs4_statfs_res *res)
L
Linus Torvalds 已提交
6663 6664 6665 6666
{
	struct compound_hdr hdr;
	int status;

6667
	status = decode_compound_hdr(xdr, &hdr);
6668
	if (!status)
6669
		status = decode_sequence(xdr, &res->seq_res, req);
L
Linus Torvalds 已提交
6670
	if (!status)
6671
		status = decode_putfh(xdr);
L
Linus Torvalds 已提交
6672
	if (!status)
6673
		status = decode_statfs(xdr, res->fsstat);
L
Linus Torvalds 已提交
6674 6675 6676 6677
	return status;
}

/*
6678
 * Decode GETATTR_BITMAP response
L
Linus Torvalds 已提交
6679
 */
6680 6681 6682
static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
				    struct xdr_stream *xdr,
				    struct nfs4_server_caps_res *res)
L
Linus Torvalds 已提交
6683 6684 6685 6686
{
	struct compound_hdr hdr;
	int status;

6687
	status = decode_compound_hdr(xdr, &hdr);
6688 6689
	if (status)
		goto out;
6690
	status = decode_sequence(xdr, &res->seq_res, req);
6691
	if (status)
L
Linus Torvalds 已提交
6692
		goto out;
6693 6694
	status = decode_putfh(xdr);
	if (status)
L
Linus Torvalds 已提交
6695
		goto out;
6696
	status = decode_server_caps(xdr, res);
L
Linus Torvalds 已提交
6697 6698 6699 6700 6701 6702 6703
out:
	return status;
}

/*
 * Decode RENEW response
 */
6704 6705
static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
			      void *__unused)
L
Linus Torvalds 已提交
6706 6707 6708 6709
{
	struct compound_hdr hdr;
	int status;

6710
	status = decode_compound_hdr(xdr, &hdr);
L
Linus Torvalds 已提交
6711
	if (!status)
6712
		status = decode_renew(xdr);
L
Linus Torvalds 已提交
6713 6714 6715 6716
	return status;
}

/*
6717
 * Decode SETCLIENTID response
L
Linus Torvalds 已提交
6718
 */
6719 6720 6721
static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
				    struct xdr_stream *xdr,
				    struct nfs4_setclientid_res *res)
L
Linus Torvalds 已提交
6722 6723 6724 6725
{
	struct compound_hdr hdr;
	int status;

6726
	status = decode_compound_hdr(xdr, &hdr);
L
Linus Torvalds 已提交
6727
	if (!status)
6728
		status = decode_setclientid(xdr, res);
L
Linus Torvalds 已提交
6729 6730 6731 6732
	return status;
}

/*
6733
 * Decode SETCLIENTID_CONFIRM response
L
Linus Torvalds 已提交
6734
 */
6735
static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
6736
					    struct xdr_stream *xdr)
L
Linus Torvalds 已提交
6737 6738 6739 6740
{
	struct compound_hdr hdr;
	int status;

6741
	status = decode_compound_hdr(xdr, &hdr);
L
Linus Torvalds 已提交
6742
	if (!status)
6743
		status = decode_setclientid_confirm(xdr);
L
Linus Torvalds 已提交
6744 6745 6746 6747
	return status;
}

/*
6748
 * Decode DELEGRETURN response
L
Linus Torvalds 已提交
6749
 */
6750 6751 6752
static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
				    struct xdr_stream *xdr,
				    struct nfs4_delegreturnres *res)
L
Linus Torvalds 已提交
6753 6754 6755 6756
{
	struct compound_hdr hdr;
	int status;

6757
	status = decode_compound_hdr(xdr, &hdr);
6758 6759
	if (status)
		goto out;
6760
	status = decode_sequence(xdr, &res->seq_res, rqstp);
6761
	if (status)
6762
		goto out;
6763
	status = decode_putfh(xdr);
6764 6765
	if (status != 0)
		goto out;
6766
	status = decode_getfattr(xdr, res->fattr, res->server);
6767 6768
	if (status != 0)
		goto out;
6769
	status = decode_delegreturn(xdr);
6770
out:
L
Linus Torvalds 已提交
6771 6772 6773
	return status;
}

6774
/*
6775
 * Decode FS_LOCATIONS response
6776
 */
6777 6778
static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
				     struct xdr_stream *xdr,
B
Benny Halevy 已提交
6779
				     struct nfs4_fs_locations_res *res)
6780 6781 6782 6783
{
	struct compound_hdr hdr;
	int status;

6784
	status = decode_compound_hdr(xdr, &hdr);
6785 6786
	if (status)
		goto out;
6787
	status = decode_sequence(xdr, &res->seq_res, req);
6788
	if (status)
6789
		goto out;
6790 6791
	status = decode_putfh(xdr);
	if (status)
6792
		goto out;
6793 6794 6795 6796
	if (res->migration) {
		xdr_enter_page(xdr, PAGE_SIZE);
		status = decode_getfattr_generic(xdr,
					&res->fs_locations->fattr,
6797
					 NULL, res->fs_locations,
6798
					 NULL, res->fs_locations->server);
6799 6800 6801 6802 6803 6804 6805 6806 6807 6808 6809 6810 6811 6812
		if (status)
			goto out;
		if (res->renew)
			status = decode_renew(xdr);
	} else {
		status = decode_lookup(xdr);
		if (status)
			goto out;
		xdr_enter_page(xdr, PAGE_SIZE);
		status = decode_getfattr_generic(xdr,
					&res->fs_locations->fattr,
					 NULL, res->fs_locations,
					 NULL, res->fs_locations->server);
	}
6813 6814 6815 6816
out:
	return status;
}

B
Bryan Schumaker 已提交
6817 6818 6819 6820 6821 6822 6823 6824 6825 6826 6827 6828 6829 6830 6831 6832 6833 6834 6835 6836 6837 6838 6839 6840
/*
 * Decode SECINFO response
 */
static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
				struct xdr_stream *xdr,
				struct nfs4_secinfo_res *res)
{
	struct compound_hdr hdr;
	int status;

	status = decode_compound_hdr(xdr, &hdr);
	if (status)
		goto out;
	status = decode_sequence(xdr, &res->seq_res, rqstp);
	if (status)
		goto out;
	status = decode_putfh(xdr);
	if (status)
		goto out;
	status = decode_secinfo(xdr, res);
out:
	return status;
}

6841 6842 6843 6844 6845 6846 6847 6848 6849 6850 6851 6852 6853 6854 6855 6856 6857 6858 6859 6860 6861 6862 6863 6864 6865 6866 6867 6868
/*
 * Decode FSID_PRESENT response
 */
static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp,
				     struct xdr_stream *xdr,
				     struct nfs4_fsid_present_res *res)
{
	struct compound_hdr hdr;
	int status;

	status = decode_compound_hdr(xdr, &hdr);
	if (status)
		goto out;
	status = decode_sequence(xdr, &res->seq_res, rqstp);
	if (status)
		goto out;
	status = decode_putfh(xdr);
	if (status)
		goto out;
	status = decode_getfh(xdr, res->fh);
	if (status)
		goto out;
	if (res->renew)
		status = decode_renew(xdr);
out:
	return status;
}

B
Benny Halevy 已提交
6869
#if defined(CONFIG_NFS_V4_1)
6870 6871 6872 6873 6874 6875 6876 6877 6878 6879 6880 6881 6882 6883 6884 6885
/*
 * Decode BIND_CONN_TO_SESSION response
 */
static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
					struct xdr_stream *xdr,
					void *res)
{
	struct compound_hdr hdr;
	int status;

	status = decode_compound_hdr(xdr, &hdr);
	if (!status)
		status = decode_bind_conn_to_session(xdr, res);
	return status;
}

B
Benny Halevy 已提交
6886
/*
6887
 * Decode EXCHANGE_ID response
B
Benny Halevy 已提交
6888
 */
6889 6890
static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
				    struct xdr_stream *xdr,
B
Benny Halevy 已提交
6891 6892 6893 6894 6895
				    void *res)
{
	struct compound_hdr hdr;
	int status;

6896
	status = decode_compound_hdr(xdr, &hdr);
B
Benny Halevy 已提交
6897
	if (!status)
6898
		status = decode_exchange_id(xdr, res);
B
Benny Halevy 已提交
6899 6900
	return status;
}
A
Andy Adamson 已提交
6901

A
Andy Adamson 已提交
6902
/*
6903
 * Decode CREATE_SESSION response
A
Andy Adamson 已提交
6904
 */
6905 6906
static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
				       struct xdr_stream *xdr,
A
Andy Adamson 已提交
6907 6908 6909 6910 6911
				       struct nfs41_create_session_res *res)
{
	struct compound_hdr hdr;
	int status;

6912
	status = decode_compound_hdr(xdr, &hdr);
A
Andy Adamson 已提交
6913
	if (!status)
6914
		status = decode_create_session(xdr, res);
A
Andy Adamson 已提交
6915 6916 6917
	return status;
}

A
Andy Adamson 已提交
6918
/*
6919
 * Decode DESTROY_SESSION response
A
Andy Adamson 已提交
6920
 */
6921 6922 6923
static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
					struct xdr_stream *xdr,
					void *res)
A
Andy Adamson 已提交
6924 6925 6926 6927
{
	struct compound_hdr hdr;
	int status;

6928
	status = decode_compound_hdr(xdr, &hdr);
A
Andy Adamson 已提交
6929
	if (!status)
6930
		status = decode_destroy_session(xdr, res);
A
Andy Adamson 已提交
6931 6932 6933
	return status;
}

T
Trond Myklebust 已提交
6934 6935 6936 6937 6938 6939 6940 6941 6942 6943 6944 6945 6946 6947 6948 6949
/*
 * Decode DESTROY_CLIENTID response
 */
static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
					struct xdr_stream *xdr,
					void *res)
{
	struct compound_hdr hdr;
	int status;

	status = decode_compound_hdr(xdr, &hdr);
	if (!status)
		status = decode_destroy_clientid(xdr, res);
	return status;
}

A
Andy Adamson 已提交
6950
/*
6951
 * Decode SEQUENCE response
A
Andy Adamson 已提交
6952
 */
6953 6954
static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
				 struct xdr_stream *xdr,
A
Andy Adamson 已提交
6955 6956 6957 6958 6959
				 struct nfs4_sequence_res *res)
{
	struct compound_hdr hdr;
	int status;

6960
	status = decode_compound_hdr(xdr, &hdr);
A
Andy Adamson 已提交
6961
	if (!status)
6962
		status = decode_sequence(xdr, res, rqstp);
A
Andy Adamson 已提交
6963 6964 6965
	return status;
}

A
Andy Adamson 已提交
6966
/*
6967
 * Decode GET_LEASE_TIME response
A
Andy Adamson 已提交
6968
 */
6969 6970
static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
				       struct xdr_stream *xdr,
A
Andy Adamson 已提交
6971 6972 6973 6974 6975
				       struct nfs4_get_lease_time_res *res)
{
	struct compound_hdr hdr;
	int status;

6976
	status = decode_compound_hdr(xdr, &hdr);
A
Andy Adamson 已提交
6977
	if (!status)
6978
		status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
A
Andy Adamson 已提交
6979
	if (!status)
6980
		status = decode_putrootfh(xdr);
A
Andy Adamson 已提交
6981
	if (!status)
6982
		status = decode_fsinfo(xdr, res->lr_fsinfo);
A
Andy Adamson 已提交
6983 6984
	return status;
}
6985 6986 6987 6988

/*
 * Decode RECLAIM_COMPLETE response
 */
6989 6990
static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
					 struct xdr_stream *xdr,
6991 6992 6993 6994 6995
					 struct nfs41_reclaim_complete_res *res)
{
	struct compound_hdr hdr;
	int status;

6996
	status = decode_compound_hdr(xdr, &hdr);
6997
	if (!status)
6998
		status = decode_sequence(xdr, &res->seq_res, rqstp);
6999
	if (!status)
H
Himangi Saraogi 已提交
7000
		status = decode_reclaim_complete(xdr, NULL);
7001 7002
	return status;
}
7003 7004 7005 7006

/*
 * Decode GETDEVINFO response
 */
7007 7008
static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
				      struct xdr_stream *xdr,
7009 7010 7011 7012 7013
				      struct nfs4_getdeviceinfo_res *res)
{
	struct compound_hdr hdr;
	int status;

7014
	status = decode_compound_hdr(xdr, &hdr);
7015 7016
	if (status != 0)
		goto out;
7017
	status = decode_sequence(xdr, &res->seq_res, rqstp);
7018 7019
	if (status != 0)
		goto out;
7020
	status = decode_getdeviceinfo(xdr, res->pdev);
7021 7022 7023 7024 7025 7026 7027
out:
	return status;
}

/*
 * Decode LAYOUTGET response
 */
7028 7029
static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
				  struct xdr_stream *xdr,
7030 7031 7032 7033 7034
				  struct nfs4_layoutget_res *res)
{
	struct compound_hdr hdr;
	int status;

7035
	status = decode_compound_hdr(xdr, &hdr);
7036 7037
	if (status)
		goto out;
7038
	status = decode_sequence(xdr, &res->seq_res, rqstp);
7039 7040
	if (status)
		goto out;
7041
	status = decode_putfh(xdr);
7042 7043
	if (status)
		goto out;
7044
	status = decode_layoutget(xdr, rqstp, res);
7045 7046 7047
out:
	return status;
}
A
Andy Adamson 已提交
7048

B
Benny Halevy 已提交
7049 7050 7051 7052 7053 7054 7055 7056 7057 7058 7059 7060 7061 7062 7063 7064 7065 7066 7067 7068 7069 7070 7071 7072
/*
 * Decode LAYOUTRETURN response
 */
static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
				     struct xdr_stream *xdr,
				     struct nfs4_layoutreturn_res *res)
{
	struct compound_hdr hdr;
	int status;

	status = decode_compound_hdr(xdr, &hdr);
	if (status)
		goto out;
	status = decode_sequence(xdr, &res->seq_res, rqstp);
	if (status)
		goto out;
	status = decode_putfh(xdr);
	if (status)
		goto out;
	status = decode_layoutreturn(xdr, res);
out:
	return status;
}

A
Andy Adamson 已提交
7073 7074 7075 7076 7077 7078 7079 7080 7081 7082 7083 7084 7085 7086 7087 7088 7089 7090 7091 7092 7093 7094
/*
 * Decode LAYOUTCOMMIT response
 */
static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
				     struct xdr_stream *xdr,
				     struct nfs4_layoutcommit_res *res)
{
	struct compound_hdr hdr;
	int status;

	status = decode_compound_hdr(xdr, &hdr);
	if (status)
		goto out;
	status = decode_sequence(xdr, &res->seq_res, rqstp);
	if (status)
		goto out;
	status = decode_putfh(xdr);
	if (status)
		goto out;
	status = decode_layoutcommit(xdr, rqstp, res);
	if (status)
		goto out;
7095
	decode_getfattr(xdr, res->fattr, res->server);
A
Andy Adamson 已提交
7096 7097 7098
out:
	return status;
}
7099 7100 7101 7102 7103 7104 7105 7106 7107 7108 7109 7110 7111 7112 7113 7114 7115 7116 7117 7118

/*
 * Decode SECINFO_NO_NAME response
 */
static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
					struct xdr_stream *xdr,
					struct nfs4_secinfo_res *res)
{
	struct compound_hdr hdr;
	int status;

	status = decode_compound_hdr(xdr, &hdr);
	if (status)
		goto out;
	status = decode_sequence(xdr, &res->seq_res, rqstp);
	if (status)
		goto out;
	status = decode_putrootfh(xdr);
	if (status)
		goto out;
B
Bryan Schumaker 已提交
7119
	status = decode_secinfo_no_name(xdr, res);
7120 7121 7122
out:
	return status;
}
B
Bryan Schumaker 已提交
7123 7124 7125 7126 7127 7128 7129 7130 7131 7132 7133 7134 7135 7136 7137 7138 7139 7140 7141 7142 7143

/*
 * Decode TEST_STATEID response
 */
static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
				     struct xdr_stream *xdr,
				     struct nfs41_test_stateid_res *res)
{
	struct compound_hdr hdr;
	int status;

	status = decode_compound_hdr(xdr, &hdr);
	if (status)
		goto out;
	status = decode_sequence(xdr, &res->seq_res, rqstp);
	if (status)
		goto out;
	status = decode_test_stateid(xdr, res);
out:
	return status;
}
B
Bryan Schumaker 已提交
7144 7145 7146 7147 7148 7149 7150 7151 7152 7153 7154 7155 7156 7157 7158 7159 7160 7161 7162 7163 7164

/*
 * Decode FREE_STATEID response
 */
static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
				     struct xdr_stream *xdr,
				     struct nfs41_free_stateid_res *res)
{
	struct compound_hdr hdr;
	int status;

	status = decode_compound_hdr(xdr, &hdr);
	if (status)
		goto out;
	status = decode_sequence(xdr, &res->seq_res, rqstp);
	if (status)
		goto out;
	status = decode_free_stateid(xdr, res);
out:
	return status;
}
B
Benny Halevy 已提交
7165 7166
#endif /* CONFIG_NFS_V4_1 */

7167 7168 7169 7170 7171 7172 7173 7174 7175 7176 7177 7178 7179 7180 7181 7182
/**
 * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
 *                      the local page cache.
 * @xdr: XDR stream where entry resides
 * @entry: buffer to fill in with entry data
 * @plus: boolean indicating whether this should be a readdirplus entry
 *
 * Returns zero if successful, otherwise a negative errno value is
 * returned.
 *
 * This function is not invoked during READDIR reply decoding, but
 * rather whenever an application invokes the getdents(2) system call
 * on a directory already in our cache.
 */
int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
		       int plus)
L
Linus Torvalds 已提交
7183
{
7184
	unsigned int savep;
7185
	uint32_t bitmap[3] = {0};
L
Linus Torvalds 已提交
7186
	uint32_t len;
7187 7188 7189
	__be32 *p = xdr_inline_decode(xdr, 4);
	if (unlikely(!p))
		goto out_overflow;
7190
	if (*p == xdr_zero) {
7191 7192 7193
		p = xdr_inline_decode(xdr, 4);
		if (unlikely(!p))
			goto out_overflow;
7194
		if (*p == xdr_zero)
7195
			return -EAGAIN;
L
Linus Torvalds 已提交
7196
		entry->eof = 1;
7197
		return -EBADCOOKIE;
L
Linus Torvalds 已提交
7198 7199
	}

7200 7201 7202
	p = xdr_inline_decode(xdr, 12);
	if (unlikely(!p))
		goto out_overflow;
L
Linus Torvalds 已提交
7203 7204
	entry->prev_cookie = entry->cookie;
	p = xdr_decode_hyper(p, &entry->cookie);
7205
	entry->len = be32_to_cpup(p);
7206

7207
	p = xdr_inline_decode(xdr, entry->len);
7208 7209
	if (unlikely(!p))
		goto out_overflow;
L
Linus Torvalds 已提交
7210 7211 7212 7213 7214 7215 7216 7217
	entry->name = (const char *) p;

	/*
	 * 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;
7218
	entry->fattr->valid = 0;
L
Linus Torvalds 已提交
7219

7220 7221 7222
	if (decode_attr_bitmap(xdr, bitmap) < 0)
		goto out_overflow;

7223
	if (decode_attr_length(xdr, &len, &savep) < 0)
7224 7225
		goto out_overflow;

7226
	if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
7227
			NULL, entry->label, entry->server) < 0)
7228
		goto out_overflow;
7229 7230 7231
	if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
		entry->ino = entry->fattr->mounted_on_fileid;
	else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
7232 7233
		entry->ino = entry->fattr->fileid;

7234 7235 7236 7237
	entry->d_type = DT_UNKNOWN;
	if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
		entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);

7238
	return 0;
7239 7240 7241

out_overflow:
	print_overflow_msg(__func__, xdr);
7242
	return -EAGAIN;
L
Linus Torvalds 已提交
7243 7244 7245 7246 7247 7248 7249 7250 7251 7252 7253
}

/*
 * 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		},
7254 7255 7256 7257 7258 7259 7260 7261 7262 7263 7264 7265 7266 7267 7268 7269 7270 7271 7272 7273 7274 7275
	{ 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	},
	{ NFS4ERR_BAD_COOKIE,	-EBADCOOKIE	},
	{ NFS4ERR_NOTSUPP,	-ENOTSUPP	},
	{ NFS4ERR_TOOSMALL,	-ETOOSMALL	},
7276
	{ NFS4ERR_SERVERFAULT,	-EREMOTEIO	},
7277 7278 7279 7280 7281 7282
	{ NFS4ERR_BADTYPE,	-EBADTYPE	},
	{ NFS4ERR_LOCKED,	-EAGAIN		},
	{ NFS4ERR_SYMLINK,	-ELOOP		},
	{ NFS4ERR_OP_ILLEGAL,	-EOPNOTSUPP	},
	{ NFS4ERR_DEADLOCK,	-EDEADLK	},
	{ -1,			-EIO		}
L
Linus Torvalds 已提交
7283 7284 7285 7286 7287 7288 7289
};

/*
 * Convert an NFS error code to a local one.
 * This one is used jointly by NFSv2 and NFSv3.
 */
static int
7290
nfs4_stat_to_errno(int stat)
L
Linus Torvalds 已提交
7291 7292 7293 7294 7295 7296 7297 7298
{
	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. */
7299
		return -EREMOTEIO;
L
Linus Torvalds 已提交
7300 7301 7302 7303 7304 7305
	}
	/* 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.
	 */
7306
	return -stat;
L
Linus Torvalds 已提交
7307 7308 7309 7310 7311
}

#define PROC(proc, argtype, restype)				\
[NFSPROC4_CLNT_##proc] = {					\
	.p_proc   = NFSPROC4_COMPOUND,				\
7312
	.p_encode = (kxdreproc_t)nfs4_xdr_##argtype,		\
7313
	.p_decode = (kxdrdproc_t)nfs4_xdr_##restype,		\
7314 7315
	.p_arglen = NFS4_##argtype##_sz,			\
	.p_replen = NFS4_##restype##_sz,			\
7316 7317
	.p_statidx = NFSPROC4_CLNT_##proc,			\
	.p_name   = #proc,					\
A
Andy Adamson 已提交
7318
}
L
Linus Torvalds 已提交
7319 7320

struct rpc_procinfo	nfs4_procedures[] = {
7321 7322 7323 7324 7325 7326 7327 7328 7329 7330 7331 7332 7333 7334 7335 7336 7337 7338 7339 7340 7341 7342 7343 7344 7345 7346 7347 7348 7349 7350 7351 7352 7353 7354 7355
	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),
	PROC(GETACL,		enc_getacl,		dec_getacl),
	PROC(SETACL,		enc_setacl,		dec_setacl),
	PROC(FS_LOCATIONS,	enc_fs_locations,	dec_fs_locations),
	PROC(RELEASE_LOCKOWNER,	enc_release_lockowner,	dec_release_lockowner),
B
Bryan Schumaker 已提交
7356
	PROC(SECINFO,		enc_secinfo,		dec_secinfo),
7357
	PROC(FSID_PRESENT,	enc_fsid_present,	dec_fsid_present),
B
Benny Halevy 已提交
7358
#if defined(CONFIG_NFS_V4_1)
7359 7360 7361 7362 7363 7364 7365 7366
	PROC(EXCHANGE_ID,	enc_exchange_id,	dec_exchange_id),
	PROC(CREATE_SESSION,	enc_create_session,	dec_create_session),
	PROC(DESTROY_SESSION,	enc_destroy_session,	dec_destroy_session),
	PROC(SEQUENCE,		enc_sequence,		dec_sequence),
	PROC(GET_LEASE_TIME,	enc_get_lease_time,	dec_get_lease_time),
	PROC(RECLAIM_COMPLETE,	enc_reclaim_complete,	dec_reclaim_complete),
	PROC(GETDEVICEINFO,	enc_getdeviceinfo,	dec_getdeviceinfo),
	PROC(LAYOUTGET,		enc_layoutget,		dec_layoutget),
A
Andy Adamson 已提交
7367
	PROC(LAYOUTCOMMIT,	enc_layoutcommit,	dec_layoutcommit),
B
Benny Halevy 已提交
7368
	PROC(LAYOUTRETURN,	enc_layoutreturn,	dec_layoutreturn),
7369
	PROC(SECINFO_NO_NAME,	enc_secinfo_no_name,	dec_secinfo_no_name),
B
Bryan Schumaker 已提交
7370
	PROC(TEST_STATEID,	enc_test_stateid,	dec_test_stateid),
B
Bryan Schumaker 已提交
7371
	PROC(FREE_STATEID,	enc_free_stateid,	dec_free_stateid),
7372 7373
	PROC(BIND_CONN_TO_SESSION,
			enc_bind_conn_to_session, dec_bind_conn_to_session),
T
Trond Myklebust 已提交
7374
	PROC(DESTROY_CLIENTID,	enc_destroy_clientid,	dec_destroy_clientid),
B
Benny Halevy 已提交
7375
#endif /* CONFIG_NFS_V4_1 */
L
Linus Torvalds 已提交
7376 7377
};

7378
const struct rpc_version nfs_version4 = {
L
Linus Torvalds 已提交
7379
	.number			= 4,
7380
	.nrprocs		= ARRAY_SIZE(nfs4_procedures),
L
Linus Torvalds 已提交
7381 7382 7383 7384 7385 7386 7387 7388
	.procs			= nfs4_procedures
};

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