mirror of https://gitee.com/openkylin/linux.git
6065 lines
159 KiB
C
6065 lines
159 KiB
C
/*
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* fs/nfs/nfs4xdr.c
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*
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* Client-side XDR for NFSv4.
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*
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* Copyright (c) 2002 The Regents of the University of Michigan.
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* All rights reserved.
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*
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* Kendrick Smith <kmsmith@umich.edu>
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* Andy Adamson <andros@umich.edu>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/param.h>
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#include <linux/time.h>
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#include <linux/mm.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/in.h>
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#include <linux/pagemap.h>
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#include <linux/proc_fs.h>
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#include <linux/kdev_t.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/nfs.h>
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#include <linux/nfs4.h>
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#include <linux/nfs_fs.h>
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#include <linux/nfs_idmap.h>
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#include "nfs4_fs.h"
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#include "internal.h"
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#define NFSDBG_FACILITY NFSDBG_XDR
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/* Mapping from NFS error code to "errno" error code. */
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#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 */
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#ifdef DEBUG
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#define NFS4_MAXTAGLEN 20
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#else
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#define NFS4_MAXTAGLEN 0
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#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 + 4)
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#define lock_owner_id_maxsz (1 + 4)
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#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
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#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
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#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
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#define op_encode_hdr_maxsz (1)
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#define op_decode_hdr_maxsz (2)
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#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
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#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
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#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
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#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
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#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
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(NFS4_FHSIZE >> 2))
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#define decode_putfh_maxsz (op_decode_hdr_maxsz)
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#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
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#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
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#define encode_getfh_maxsz (op_encode_hdr_maxsz)
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#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
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((3+NFS4_FHSIZE) >> 2))
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#define nfs4_fattr_bitmap_maxsz 3
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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))
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#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
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#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
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#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
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/* This is based on getfattr, which uses the most attributes: */
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#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
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3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz))
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#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
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nfs4_fattr_value_maxsz)
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#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
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#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
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1 + 2 + 1 + \
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nfs4_owner_maxsz + \
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nfs4_group_maxsz + \
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4 + 4)
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#define encode_savefh_maxsz (op_encode_hdr_maxsz)
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#define decode_savefh_maxsz (op_decode_hdr_maxsz)
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#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
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#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
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#define encode_fsinfo_maxsz (encode_getattr_maxsz)
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#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
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#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
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#define decode_renew_maxsz (op_decode_hdr_maxsz)
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#define encode_setclientid_maxsz \
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(op_encode_hdr_maxsz + \
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XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
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XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
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1 /* sc_prog */ + \
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XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
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XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
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1) /* sc_cb_ident */
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#define decode_setclientid_maxsz \
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(op_decode_hdr_maxsz + \
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2 + \
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1024) /* large value for CLID_INUSE */
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#define encode_setclientid_confirm_maxsz \
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(op_encode_hdr_maxsz + \
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3 + (NFS4_VERIFIER_SIZE >> 2))
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#define decode_setclientid_confirm_maxsz \
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(op_decode_hdr_maxsz)
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#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
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#define decode_lookup_maxsz (op_decode_hdr_maxsz)
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#define encode_share_access_maxsz \
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(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)
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#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
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#define encode_open_maxsz (op_encode_hdr_maxsz + \
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2 + encode_share_access_maxsz + 2 + \
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open_owner_id_maxsz + \
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encode_opentype_maxsz + \
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encode_claim_null_maxsz)
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#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)
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#define decode_change_info_maxsz (5)
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#define decode_open_maxsz (op_decode_hdr_maxsz + \
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decode_stateid_maxsz + \
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decode_change_info_maxsz + 1 + \
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nfs4_fattr_bitmap_maxsz + \
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decode_delegation_maxsz)
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#define encode_open_confirm_maxsz \
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(op_encode_hdr_maxsz + \
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encode_stateid_maxsz + 1)
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#define decode_open_confirm_maxsz \
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(op_decode_hdr_maxsz + \
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decode_stateid_maxsz)
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#define encode_open_downgrade_maxsz \
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(op_encode_hdr_maxsz + \
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encode_stateid_maxsz + 1 + \
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encode_share_access_maxsz)
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#define decode_open_downgrade_maxsz \
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(op_decode_hdr_maxsz + \
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decode_stateid_maxsz)
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#define encode_close_maxsz (op_encode_hdr_maxsz + \
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1 + encode_stateid_maxsz)
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#define decode_close_maxsz (op_decode_hdr_maxsz + \
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decode_stateid_maxsz)
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#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
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encode_stateid_maxsz + \
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encode_attrs_maxsz)
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#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
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nfs4_fattr_bitmap_maxsz)
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#define encode_read_maxsz (op_encode_hdr_maxsz + \
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encode_stateid_maxsz + 3)
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#define decode_read_maxsz (op_decode_hdr_maxsz + 2)
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#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
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2 + encode_verifier_maxsz + 5)
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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)
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#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
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#define encode_write_maxsz (op_encode_hdr_maxsz + \
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encode_stateid_maxsz + 4)
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#define decode_write_maxsz (op_decode_hdr_maxsz + \
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2 + decode_verifier_maxsz)
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#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
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#define decode_commit_maxsz (op_decode_hdr_maxsz + \
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decode_verifier_maxsz)
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#define encode_remove_maxsz (op_encode_hdr_maxsz + \
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nfs4_name_maxsz)
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#define decode_remove_maxsz (op_decode_hdr_maxsz + \
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decode_change_info_maxsz)
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#define encode_rename_maxsz (op_encode_hdr_maxsz + \
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2 * nfs4_name_maxsz)
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#define decode_rename_maxsz (op_decode_hdr_maxsz + \
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decode_change_info_maxsz + \
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decode_change_info_maxsz)
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#define encode_link_maxsz (op_encode_hdr_maxsz + \
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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 + \
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7 + \
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1 + encode_stateid_maxsz + 1 + \
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encode_lockowner_maxsz)
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#define decode_lock_denied_maxsz \
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(8 + decode_lockowner_maxsz)
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#define decode_lock_maxsz (op_decode_hdr_maxsz + \
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decode_lock_denied_maxsz)
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#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
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encode_lockowner_maxsz)
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#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
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decode_lock_denied_maxsz)
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#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
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encode_stateid_maxsz + \
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4)
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#define decode_locku_maxsz (op_decode_hdr_maxsz + \
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decode_stateid_maxsz)
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#define encode_release_lockowner_maxsz \
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(op_encode_hdr_maxsz + \
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encode_lockowner_maxsz)
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#define decode_release_lockowner_maxsz \
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(op_decode_hdr_maxsz)
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#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
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#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
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#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
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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)
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#define encode_create_maxsz (op_encode_hdr_maxsz + \
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1 + 2 + nfs4_name_maxsz + \
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encode_attrs_maxsz)
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#define decode_create_maxsz (op_decode_hdr_maxsz + \
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decode_change_info_maxsz + \
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nfs4_fattr_bitmap_maxsz)
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#define encode_statfs_maxsz (encode_getattr_maxsz)
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#define decode_statfs_maxsz (decode_getattr_maxsz)
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#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
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#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
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#define encode_getacl_maxsz (encode_getattr_maxsz)
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#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
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nfs4_fattr_bitmap_maxsz + 1)
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#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
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encode_stateid_maxsz + 3)
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#define decode_setacl_maxsz (decode_setattr_maxsz)
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#define encode_fs_locations_maxsz \
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(encode_getattr_maxsz)
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#define decode_fs_locations_maxsz \
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(0)
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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 encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
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encode_verifier_maxsz + \
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1 /* co_ownerid.len */ + \
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XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
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1 /* flags */ + \
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1 /* spa_how */ + \
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0 /* SP4_NONE (for now) */ + \
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1 /* zero implemetation id array */)
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#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
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2 /* eir_clientid */ + \
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1 /* eir_sequenceid */ + \
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1 /* eir_flags */ + \
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1 /* spr_how */ + \
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0 /* SP4_NONE (for now) */ + \
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2 /* eir_server_owner.so_minor_id */ + \
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/* eir_server_owner.so_major_id<> */ \
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XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
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/* eir_server_scope<> */ \
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XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
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1 /* eir_server_impl_id array length */ + \
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0 /* ignored eir_server_impl_id contents */)
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#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
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#define decode_channel_attrs_maxsz (6 + \
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1 /* ca_rdma_ird.len */ + \
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1 /* ca_rdma_ird */)
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#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
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2 /* csa_clientid */ + \
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1 /* csa_sequence */ + \
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1 /* csa_flags */ + \
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encode_channel_attrs_maxsz + \
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encode_channel_attrs_maxsz + \
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1 /* csa_cb_program */ + \
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1 /* csa_sec_parms.len (1) */ + \
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1 /* cb_secflavor (AUTH_SYS) */ + \
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1 /* stamp */ + \
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1 /* machinename.len */ + \
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XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
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1 /* uid */ + \
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1 /* gid */ + \
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1 /* gids.len (0) */)
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#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
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XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
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1 /* csr_sequence */ + \
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1 /* csr_flags */ + \
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decode_channel_attrs_maxsz + \
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decode_channel_attrs_maxsz)
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#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
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#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
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#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
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XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
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#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
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XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
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#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
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#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
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#else /* CONFIG_NFS_V4_1 */
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#define encode_sequence_maxsz 0
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#define decode_sequence_maxsz 0
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#endif /* CONFIG_NFS_V4_1 */
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#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
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#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
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#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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encode_getattr_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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decode_getattr_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 + \
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encode_savefh_maxsz + \
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encode_open_maxsz + \
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encode_getfh_maxsz + \
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encode_getattr_maxsz + \
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encode_restorefh_maxsz + \
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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 + \
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decode_savefh_maxsz + \
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decode_open_maxsz + \
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decode_getfh_maxsz + \
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decode_getattr_maxsz + \
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decode_restorefh_maxsz + \
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decode_getattr_maxsz)
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#define NFS4_enc_open_confirm_sz \
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(compound_encode_hdr_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_open_confirm_maxsz)
|
|
#define NFS4_dec_open_confirm_sz \
|
|
(compound_decode_hdr_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_open_confirm_maxsz)
|
|
#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_open_maxsz + \
|
|
encode_getattr_maxsz)
|
|
#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_open_maxsz + \
|
|
decode_getattr_maxsz)
|
|
#define NFS4_enc_open_downgrade_sz \
|
|
(compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_open_downgrade_maxsz + \
|
|
encode_getattr_maxsz)
|
|
#define NFS4_dec_open_downgrade_sz \
|
|
(compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_open_downgrade_maxsz + \
|
|
decode_getattr_maxsz)
|
|
#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_close_maxsz + \
|
|
encode_getattr_maxsz)
|
|
#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_close_maxsz + \
|
|
decode_getattr_maxsz)
|
|
#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_setattr_maxsz + \
|
|
encode_getattr_maxsz)
|
|
#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_setattr_maxsz + \
|
|
decode_getattr_maxsz)
|
|
#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_fsinfo_maxsz)
|
|
#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_fsinfo_maxsz)
|
|
#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
|
|
encode_renew_maxsz)
|
|
#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
|
|
decode_renew_maxsz)
|
|
#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
|
|
encode_setclientid_maxsz)
|
|
#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
|
|
decode_setclientid_maxsz)
|
|
#define NFS4_enc_setclientid_confirm_sz \
|
|
(compound_encode_hdr_maxsz + \
|
|
encode_setclientid_confirm_maxsz + \
|
|
encode_putrootfh_maxsz + \
|
|
encode_fsinfo_maxsz)
|
|
#define NFS4_dec_setclientid_confirm_sz \
|
|
(compound_decode_hdr_maxsz + \
|
|
decode_setclientid_confirm_maxsz + \
|
|
decode_putrootfh_maxsz + \
|
|
decode_fsinfo_maxsz)
|
|
#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_lock_maxsz)
|
|
#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_lock_maxsz)
|
|
#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_lockt_maxsz)
|
|
#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_lockt_maxsz)
|
|
#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_locku_maxsz)
|
|
#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_locku_maxsz)
|
|
#define NFS4_enc_release_lockowner_sz \
|
|
(compound_encode_hdr_maxsz + \
|
|
encode_lockowner_maxsz)
|
|
#define NFS4_dec_release_lockowner_sz \
|
|
(compound_decode_hdr_maxsz + \
|
|
decode_lockowner_maxsz)
|
|
#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_access_maxsz + \
|
|
encode_getattr_maxsz)
|
|
#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_access_maxsz + \
|
|
decode_getattr_maxsz)
|
|
#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_getattr_maxsz)
|
|
#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_getattr_maxsz)
|
|
#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_lookup_maxsz + \
|
|
encode_getattr_maxsz + \
|
|
encode_getfh_maxsz)
|
|
#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_lookup_maxsz + \
|
|
decode_getattr_maxsz + \
|
|
decode_getfh_maxsz)
|
|
#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putrootfh_maxsz + \
|
|
encode_getattr_maxsz + \
|
|
encode_getfh_maxsz)
|
|
#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putrootfh_maxsz + \
|
|
decode_getattr_maxsz + \
|
|
decode_getfh_maxsz)
|
|
#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_remove_maxsz + \
|
|
encode_getattr_maxsz)
|
|
#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_remove_maxsz + \
|
|
decode_getattr_maxsz)
|
|
#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_savefh_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_rename_maxsz + \
|
|
encode_getattr_maxsz + \
|
|
encode_restorefh_maxsz + \
|
|
encode_getattr_maxsz)
|
|
#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_savefh_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_rename_maxsz + \
|
|
decode_getattr_maxsz + \
|
|
decode_restorefh_maxsz + \
|
|
decode_getattr_maxsz)
|
|
#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_savefh_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_link_maxsz + \
|
|
decode_getattr_maxsz + \
|
|
encode_restorefh_maxsz + \
|
|
decode_getattr_maxsz)
|
|
#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_savefh_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_link_maxsz + \
|
|
decode_getattr_maxsz + \
|
|
decode_restorefh_maxsz + \
|
|
decode_getattr_maxsz)
|
|
#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_symlink_maxsz + \
|
|
encode_getattr_maxsz + \
|
|
encode_getfh_maxsz)
|
|
#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_symlink_maxsz + \
|
|
decode_getattr_maxsz + \
|
|
decode_getfh_maxsz)
|
|
#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_savefh_maxsz + \
|
|
encode_create_maxsz + \
|
|
encode_getfh_maxsz + \
|
|
encode_getattr_maxsz + \
|
|
encode_restorefh_maxsz + \
|
|
encode_getattr_maxsz)
|
|
#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_savefh_maxsz + \
|
|
decode_create_maxsz + \
|
|
decode_getfh_maxsz + \
|
|
decode_getattr_maxsz + \
|
|
decode_restorefh_maxsz + \
|
|
decode_getattr_maxsz)
|
|
#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_getattr_maxsz)
|
|
#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_getattr_maxsz)
|
|
#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_statfs_maxsz)
|
|
#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_statfs_maxsz)
|
|
#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_getattr_maxsz)
|
|
#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_getattr_maxsz)
|
|
#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_delegreturn_maxsz + \
|
|
encode_getattr_maxsz)
|
|
#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_delegreturn_maxsz + \
|
|
decode_getattr_maxsz)
|
|
#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_getacl_maxsz)
|
|
#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_getacl_maxsz)
|
|
#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_setacl_maxsz)
|
|
#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_setacl_maxsz)
|
|
#define NFS4_enc_fs_locations_sz \
|
|
(compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putfh_maxsz + \
|
|
encode_lookup_maxsz + \
|
|
encode_fs_locations_maxsz)
|
|
#define NFS4_dec_fs_locations_sz \
|
|
(compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putfh_maxsz + \
|
|
decode_lookup_maxsz + \
|
|
decode_fs_locations_maxsz)
|
|
#if defined(CONFIG_NFS_V4_1)
|
|
#define NFS4_enc_exchange_id_sz \
|
|
(compound_encode_hdr_maxsz + \
|
|
encode_exchange_id_maxsz)
|
|
#define NFS4_dec_exchange_id_sz \
|
|
(compound_decode_hdr_maxsz + \
|
|
decode_exchange_id_maxsz)
|
|
#define NFS4_enc_create_session_sz \
|
|
(compound_encode_hdr_maxsz + \
|
|
encode_create_session_maxsz)
|
|
#define NFS4_dec_create_session_sz \
|
|
(compound_decode_hdr_maxsz + \
|
|
decode_create_session_maxsz)
|
|
#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
|
|
encode_destroy_session_maxsz)
|
|
#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
|
|
decode_destroy_session_maxsz)
|
|
#define NFS4_enc_sequence_sz \
|
|
(compound_decode_hdr_maxsz + \
|
|
encode_sequence_maxsz)
|
|
#define NFS4_dec_sequence_sz \
|
|
(compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz)
|
|
#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_putrootfh_maxsz + \
|
|
encode_fsinfo_maxsz)
|
|
#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_putrootfh_maxsz + \
|
|
decode_fsinfo_maxsz)
|
|
#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
|
|
encode_sequence_maxsz + \
|
|
encode_reclaim_complete_maxsz)
|
|
#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
|
|
decode_sequence_maxsz + \
|
|
decode_reclaim_complete_maxsz)
|
|
|
|
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);
|
|
#endif /* CONFIG_NFS_V4_1 */
|
|
|
|
static const umode_t nfs_type2fmt[] = {
|
|
[NF4BAD] = 0,
|
|
[NF4REG] = S_IFREG,
|
|
[NF4DIR] = S_IFDIR,
|
|
[NF4BLK] = S_IFBLK,
|
|
[NF4CHR] = S_IFCHR,
|
|
[NF4LNK] = S_IFLNK,
|
|
[NF4SOCK] = S_IFSOCK,
|
|
[NF4FIFO] = S_IFIFO,
|
|
[NF4ATTRDIR] = 0,
|
|
[NF4NAMEDATTR] = 0,
|
|
};
|
|
|
|
struct compound_hdr {
|
|
int32_t status;
|
|
uint32_t nops;
|
|
__be32 * nops_p;
|
|
uint32_t taglen;
|
|
char * tag;
|
|
uint32_t replen; /* expected reply words */
|
|
u32 minorversion;
|
|
};
|
|
|
|
static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
|
|
{
|
|
__be32 *p = xdr_reserve_space(xdr, nbytes);
|
|
BUG_ON(!p);
|
|
return p;
|
|
}
|
|
|
|
static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = xdr_reserve_space(xdr, 4 + len);
|
|
BUG_ON(p == NULL);
|
|
xdr_encode_opaque(p, str, len);
|
|
}
|
|
|
|
static void encode_compound_hdr(struct xdr_stream *xdr,
|
|
struct rpc_rqst *req,
|
|
struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
struct rpc_auth *auth = req->rq_cred->cr_auth;
|
|
|
|
/* initialize running count of expected bytes in reply.
|
|
* NOTE: the replied tag SHOULD be the same is the one sent,
|
|
* but this is not required as a MUST for the server to do so. */
|
|
hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
|
|
|
|
dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
|
|
BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
|
|
p = reserve_space(xdr, 4 + hdr->taglen + 8);
|
|
p = xdr_encode_opaque(p, hdr->tag, hdr->taglen);
|
|
*p++ = cpu_to_be32(hdr->minorversion);
|
|
hdr->nops_p = p;
|
|
*p = cpu_to_be32(hdr->nops);
|
|
}
|
|
|
|
static void encode_nops(struct compound_hdr *hdr)
|
|
{
|
|
BUG_ON(hdr->nops > NFS4_MAX_OPS);
|
|
*hdr->nops_p = htonl(hdr->nops);
|
|
}
|
|
|
|
static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
|
|
BUG_ON(p == NULL);
|
|
xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
|
|
}
|
|
|
|
static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
|
|
{
|
|
char owner_name[IDMAP_NAMESZ];
|
|
char owner_group[IDMAP_NAMESZ];
|
|
int owner_namelen = 0;
|
|
int owner_grouplen = 0;
|
|
__be32 *p;
|
|
__be32 *q;
|
|
int len;
|
|
uint32_t bmval0 = 0;
|
|
uint32_t bmval1 = 0;
|
|
|
|
/*
|
|
* We reserve enough space to write the entire attribute buffer at once.
|
|
* In the worst-case, this would be
|
|
* 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
|
|
* = 36 bytes, plus any contribution from variable-length fields
|
|
* such as owner/group.
|
|
*/
|
|
len = 16;
|
|
|
|
/* Sigh */
|
|
if (iap->ia_valid & ATTR_SIZE)
|
|
len += 8;
|
|
if (iap->ia_valid & ATTR_MODE)
|
|
len += 4;
|
|
if (iap->ia_valid & ATTR_UID) {
|
|
owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name, IDMAP_NAMESZ);
|
|
if (owner_namelen < 0) {
|
|
dprintk("nfs: couldn't resolve uid %d to string\n",
|
|
iap->ia_uid);
|
|
/* XXX */
|
|
strcpy(owner_name, "nobody");
|
|
owner_namelen = sizeof("nobody") - 1;
|
|
/* goto out; */
|
|
}
|
|
len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
|
|
}
|
|
if (iap->ia_valid & ATTR_GID) {
|
|
owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group, IDMAP_NAMESZ);
|
|
if (owner_grouplen < 0) {
|
|
dprintk("nfs: couldn't resolve gid %d to string\n",
|
|
iap->ia_gid);
|
|
strcpy(owner_group, "nobody");
|
|
owner_grouplen = sizeof("nobody") - 1;
|
|
/* goto out; */
|
|
}
|
|
len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
|
|
}
|
|
if (iap->ia_valid & ATTR_ATIME_SET)
|
|
len += 16;
|
|
else if (iap->ia_valid & ATTR_ATIME)
|
|
len += 4;
|
|
if (iap->ia_valid & ATTR_MTIME_SET)
|
|
len += 16;
|
|
else if (iap->ia_valid & ATTR_MTIME)
|
|
len += 4;
|
|
p = reserve_space(xdr, len);
|
|
|
|
/*
|
|
* We write the bitmap length now, but leave the bitmap and the attribute
|
|
* buffer length to be backfilled at the end of this routine.
|
|
*/
|
|
*p++ = cpu_to_be32(2);
|
|
q = p;
|
|
p += 3;
|
|
|
|
if (iap->ia_valid & ATTR_SIZE) {
|
|
bmval0 |= FATTR4_WORD0_SIZE;
|
|
p = xdr_encode_hyper(p, iap->ia_size);
|
|
}
|
|
if (iap->ia_valid & ATTR_MODE) {
|
|
bmval1 |= FATTR4_WORD1_MODE;
|
|
*p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
|
|
}
|
|
if (iap->ia_valid & ATTR_UID) {
|
|
bmval1 |= FATTR4_WORD1_OWNER;
|
|
p = xdr_encode_opaque(p, owner_name, owner_namelen);
|
|
}
|
|
if (iap->ia_valid & ATTR_GID) {
|
|
bmval1 |= FATTR4_WORD1_OWNER_GROUP;
|
|
p = xdr_encode_opaque(p, owner_group, owner_grouplen);
|
|
}
|
|
if (iap->ia_valid & ATTR_ATIME_SET) {
|
|
bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
|
|
*p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
|
|
*p++ = cpu_to_be32(0);
|
|
*p++ = cpu_to_be32(iap->ia_atime.tv_sec);
|
|
*p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
|
|
}
|
|
else if (iap->ia_valid & ATTR_ATIME) {
|
|
bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
|
|
*p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
|
|
}
|
|
if (iap->ia_valid & ATTR_MTIME_SET) {
|
|
bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
|
|
*p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
|
|
*p++ = cpu_to_be32(0);
|
|
*p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
|
|
*p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
|
|
}
|
|
else if (iap->ia_valid & ATTR_MTIME) {
|
|
bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
|
|
*p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
|
|
}
|
|
|
|
/*
|
|
* Now we backfill the bitmap and the attribute buffer length.
|
|
*/
|
|
if (len != ((char *)p - (char *)q) + 4) {
|
|
printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
|
|
len, ((char *)p - (char *)q) + 4);
|
|
BUG();
|
|
}
|
|
len = (char *)p - (char *)q - 12;
|
|
*q++ = htonl(bmval0);
|
|
*q++ = htonl(bmval1);
|
|
*q = htonl(len);
|
|
|
|
/* out: */
|
|
}
|
|
|
|
static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 8);
|
|
*p++ = cpu_to_be32(OP_ACCESS);
|
|
*p = cpu_to_be32(access);
|
|
hdr->nops++;
|
|
hdr->replen += decode_access_maxsz;
|
|
}
|
|
|
|
static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 8+NFS4_STATEID_SIZE);
|
|
*p++ = cpu_to_be32(OP_CLOSE);
|
|
*p++ = cpu_to_be32(arg->seqid->sequence->counter);
|
|
xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
|
|
hdr->nops++;
|
|
hdr->replen += decode_close_maxsz;
|
|
}
|
|
|
|
static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 16);
|
|
*p++ = cpu_to_be32(OP_COMMIT);
|
|
p = xdr_encode_hyper(p, args->offset);
|
|
*p = cpu_to_be32(args->count);
|
|
hdr->nops++;
|
|
hdr->replen += decode_commit_maxsz;
|
|
}
|
|
|
|
static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 8);
|
|
*p++ = cpu_to_be32(OP_CREATE);
|
|
*p = cpu_to_be32(create->ftype);
|
|
|
|
switch (create->ftype) {
|
|
case NF4LNK:
|
|
p = reserve_space(xdr, 4);
|
|
*p = cpu_to_be32(create->u.symlink.len);
|
|
xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
|
|
break;
|
|
|
|
case NF4BLK: case NF4CHR:
|
|
p = reserve_space(xdr, 8);
|
|
*p++ = cpu_to_be32(create->u.device.specdata1);
|
|
*p = cpu_to_be32(create->u.device.specdata2);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
encode_string(xdr, create->name->len, create->name->name);
|
|
hdr->nops++;
|
|
hdr->replen += decode_create_maxsz;
|
|
|
|
encode_attrs(xdr, create->attrs, create->server);
|
|
}
|
|
|
|
static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 12);
|
|
*p++ = cpu_to_be32(OP_GETATTR);
|
|
*p++ = cpu_to_be32(1);
|
|
*p = cpu_to_be32(bitmap);
|
|
hdr->nops++;
|
|
hdr->replen += decode_getattr_maxsz;
|
|
}
|
|
|
|
static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 16);
|
|
*p++ = cpu_to_be32(OP_GETATTR);
|
|
*p++ = cpu_to_be32(2);
|
|
*p++ = cpu_to_be32(bm0);
|
|
*p = cpu_to_be32(bm1);
|
|
hdr->nops++;
|
|
hdr->replen += decode_getattr_maxsz;
|
|
}
|
|
|
|
static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
|
|
{
|
|
encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
|
|
bitmask[1] & nfs4_fattr_bitmap[1], hdr);
|
|
}
|
|
|
|
static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
|
|
{
|
|
encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
|
|
bitmask[1] & nfs4_fsinfo_bitmap[1], hdr);
|
|
}
|
|
|
|
static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
|
|
{
|
|
encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
|
|
bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
|
|
}
|
|
|
|
static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4);
|
|
*p = cpu_to_be32(OP_GETFH);
|
|
hdr->nops++;
|
|
hdr->replen += decode_getfh_maxsz;
|
|
}
|
|
|
|
static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 8 + name->len);
|
|
*p++ = cpu_to_be32(OP_LINK);
|
|
xdr_encode_opaque(p, name->name, name->len);
|
|
hdr->nops++;
|
|
hdr->replen += decode_link_maxsz;
|
|
}
|
|
|
|
static inline int nfs4_lock_type(struct file_lock *fl, int block)
|
|
{
|
|
if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
|
|
return block ? NFS4_READW_LT : NFS4_READ_LT;
|
|
return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
|
|
}
|
|
|
|
static inline uint64_t nfs4_lock_length(struct file_lock *fl)
|
|
{
|
|
if (fl->fl_end == OFFSET_MAX)
|
|
return ~(uint64_t)0;
|
|
return fl->fl_end - fl->fl_start + 1;
|
|
}
|
|
|
|
static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 28);
|
|
p = xdr_encode_hyper(p, lowner->clientid);
|
|
*p++ = cpu_to_be32(16);
|
|
p = xdr_encode_opaque_fixed(p, "lock id:", 8);
|
|
xdr_encode_hyper(p, lowner->id);
|
|
}
|
|
|
|
/*
|
|
* opcode,type,reclaim,offset,length,new_lock_owner = 32
|
|
* open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
|
|
*/
|
|
static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 32);
|
|
*p++ = cpu_to_be32(OP_LOCK);
|
|
*p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
|
|
*p++ = cpu_to_be32(args->reclaim);
|
|
p = xdr_encode_hyper(p, args->fl->fl_start);
|
|
p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
|
|
*p = cpu_to_be32(args->new_lock_owner);
|
|
if (args->new_lock_owner){
|
|
p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
|
|
*p++ = cpu_to_be32(args->open_seqid->sequence->counter);
|
|
p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE);
|
|
*p++ = cpu_to_be32(args->lock_seqid->sequence->counter);
|
|
encode_lockowner(xdr, &args->lock_owner);
|
|
}
|
|
else {
|
|
p = reserve_space(xdr, NFS4_STATEID_SIZE+4);
|
|
p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE);
|
|
*p = cpu_to_be32(args->lock_seqid->sequence->counter);
|
|
}
|
|
hdr->nops++;
|
|
hdr->replen += decode_lock_maxsz;
|
|
}
|
|
|
|
static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 24);
|
|
*p++ = cpu_to_be32(OP_LOCKT);
|
|
*p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
|
|
p = xdr_encode_hyper(p, args->fl->fl_start);
|
|
p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
|
|
encode_lockowner(xdr, &args->lock_owner);
|
|
hdr->nops++;
|
|
hdr->replen += decode_lockt_maxsz;
|
|
}
|
|
|
|
static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 12+NFS4_STATEID_SIZE+16);
|
|
*p++ = cpu_to_be32(OP_LOCKU);
|
|
*p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
|
|
*p++ = cpu_to_be32(args->seqid->sequence->counter);
|
|
p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
|
|
p = xdr_encode_hyper(p, args->fl->fl_start);
|
|
xdr_encode_hyper(p, nfs4_lock_length(args->fl));
|
|
hdr->nops++;
|
|
hdr->replen += decode_locku_maxsz;
|
|
}
|
|
|
|
static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4);
|
|
*p = cpu_to_be32(OP_RELEASE_LOCKOWNER);
|
|
encode_lockowner(xdr, lowner);
|
|
hdr->nops++;
|
|
hdr->replen += decode_release_lockowner_maxsz;
|
|
}
|
|
|
|
static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
|
|
{
|
|
int len = name->len;
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 8 + len);
|
|
*p++ = cpu_to_be32(OP_LOOKUP);
|
|
xdr_encode_opaque(p, name->name, len);
|
|
hdr->nops++;
|
|
hdr->replen += decode_lookup_maxsz;
|
|
}
|
|
|
|
static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 8);
|
|
switch (fmode & (FMODE_READ|FMODE_WRITE)) {
|
|
case FMODE_READ:
|
|
*p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
|
|
break;
|
|
case FMODE_WRITE:
|
|
*p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
|
|
break;
|
|
case FMODE_READ|FMODE_WRITE:
|
|
*p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
|
|
break;
|
|
default:
|
|
*p++ = cpu_to_be32(0);
|
|
}
|
|
*p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
|
|
}
|
|
|
|
static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
|
|
{
|
|
__be32 *p;
|
|
/*
|
|
* opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
|
|
* owner 4 = 32
|
|
*/
|
|
p = reserve_space(xdr, 8);
|
|
*p++ = cpu_to_be32(OP_OPEN);
|
|
*p = cpu_to_be32(arg->seqid->sequence->counter);
|
|
encode_share_access(xdr, arg->fmode);
|
|
p = reserve_space(xdr, 28);
|
|
p = xdr_encode_hyper(p, arg->clientid);
|
|
*p++ = cpu_to_be32(16);
|
|
p = xdr_encode_opaque_fixed(p, "open id:", 8);
|
|
xdr_encode_hyper(p, arg->id);
|
|
}
|
|
|
|
static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
|
|
{
|
|
__be32 *p;
|
|
struct nfs_client *clp;
|
|
|
|
p = reserve_space(xdr, 4);
|
|
switch(arg->open_flags & O_EXCL) {
|
|
case 0:
|
|
*p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
|
|
encode_attrs(xdr, arg->u.attrs, arg->server);
|
|
break;
|
|
default:
|
|
clp = arg->server->nfs_client;
|
|
if (clp->cl_mvops->minor_version > 0) {
|
|
if (nfs4_has_persistent_session(clp)) {
|
|
*p = cpu_to_be32(NFS4_CREATE_GUARDED);
|
|
encode_attrs(xdr, arg->u.attrs, arg->server);
|
|
} else {
|
|
struct iattr dummy;
|
|
|
|
*p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
|
|
encode_nfs4_verifier(xdr, &arg->u.verifier);
|
|
dummy.ia_valid = 0;
|
|
encode_attrs(xdr, &dummy, arg->server);
|
|
}
|
|
} else {
|
|
*p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
|
|
encode_nfs4_verifier(xdr, &arg->u.verifier);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4);
|
|
switch (arg->open_flags & O_CREAT) {
|
|
case 0:
|
|
*p = cpu_to_be32(NFS4_OPEN_NOCREATE);
|
|
break;
|
|
default:
|
|
BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
|
|
*p = cpu_to_be32(NFS4_OPEN_CREATE);
|
|
encode_createmode(xdr, arg);
|
|
}
|
|
}
|
|
|
|
static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4);
|
|
switch (delegation_type) {
|
|
case 0:
|
|
*p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
|
|
break;
|
|
case FMODE_READ:
|
|
*p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
|
|
break;
|
|
case FMODE_WRITE|FMODE_READ:
|
|
*p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
|
|
break;
|
|
default:
|
|
BUG();
|
|
}
|
|
}
|
|
|
|
static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4);
|
|
*p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
|
|
encode_string(xdr, name->len, name->name);
|
|
}
|
|
|
|
static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4);
|
|
*p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
|
|
encode_delegation_type(xdr, type);
|
|
}
|
|
|
|
static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
|
|
*p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
|
|
xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
|
|
encode_string(xdr, name->len, name->name);
|
|
}
|
|
|
|
static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
|
|
{
|
|
encode_openhdr(xdr, arg);
|
|
encode_opentype(xdr, arg);
|
|
switch (arg->claim) {
|
|
case NFS4_OPEN_CLAIM_NULL:
|
|
encode_claim_null(xdr, arg->name);
|
|
break;
|
|
case NFS4_OPEN_CLAIM_PREVIOUS:
|
|
encode_claim_previous(xdr, arg->u.delegation_type);
|
|
break;
|
|
case NFS4_OPEN_CLAIM_DELEGATE_CUR:
|
|
encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
|
|
break;
|
|
default:
|
|
BUG();
|
|
}
|
|
hdr->nops++;
|
|
hdr->replen += decode_open_maxsz;
|
|
}
|
|
|
|
static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
|
|
*p++ = cpu_to_be32(OP_OPEN_CONFIRM);
|
|
p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
|
|
*p = cpu_to_be32(arg->seqid->sequence->counter);
|
|
hdr->nops++;
|
|
hdr->replen += decode_open_confirm_maxsz;
|
|
}
|
|
|
|
static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
|
|
*p++ = cpu_to_be32(OP_OPEN_DOWNGRADE);
|
|
p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
|
|
*p = cpu_to_be32(arg->seqid->sequence->counter);
|
|
encode_share_access(xdr, arg->fmode);
|
|
hdr->nops++;
|
|
hdr->replen += decode_open_downgrade_maxsz;
|
|
}
|
|
|
|
static void
|
|
encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
|
|
{
|
|
int len = fh->size;
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 8 + len);
|
|
*p++ = cpu_to_be32(OP_PUTFH);
|
|
xdr_encode_opaque(p, fh->data, len);
|
|
hdr->nops++;
|
|
hdr->replen += decode_putfh_maxsz;
|
|
}
|
|
|
|
static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4);
|
|
*p = cpu_to_be32(OP_PUTROOTFH);
|
|
hdr->nops++;
|
|
hdr->replen += decode_putrootfh_maxsz;
|
|
}
|
|
|
|
static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx)
|
|
{
|
|
nfs4_stateid stateid;
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, NFS4_STATEID_SIZE);
|
|
if (ctx->state != NULL) {
|
|
nfs4_copy_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid);
|
|
xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE);
|
|
} else
|
|
xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
|
|
}
|
|
|
|
static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4);
|
|
*p = cpu_to_be32(OP_READ);
|
|
|
|
encode_stateid(xdr, args->context, args->lock_context);
|
|
|
|
p = reserve_space(xdr, 12);
|
|
p = xdr_encode_hyper(p, args->offset);
|
|
*p = cpu_to_be32(args->count);
|
|
hdr->nops++;
|
|
hdr->replen += decode_read_maxsz;
|
|
}
|
|
|
|
static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
|
|
{
|
|
uint32_t attrs[2] = {0, 0};
|
|
uint32_t dircount = readdir->count >> 1;
|
|
__be32 *p;
|
|
|
|
if (readdir->plus) {
|
|
attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
|
|
FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE;
|
|
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;
|
|
dircount >>= 1;
|
|
}
|
|
attrs[0] |= FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID;
|
|
attrs[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID;
|
|
/* Switch to mounted_on_fileid if the server supports it */
|
|
if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
|
|
attrs[0] &= ~FATTR4_WORD0_FILEID;
|
|
else
|
|
attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
|
|
|
|
p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20);
|
|
*p++ = cpu_to_be32(OP_READDIR);
|
|
p = xdr_encode_hyper(p, readdir->cookie);
|
|
p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE);
|
|
*p++ = cpu_to_be32(dircount);
|
|
*p++ = cpu_to_be32(readdir->count);
|
|
*p++ = cpu_to_be32(2);
|
|
|
|
*p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
|
|
*p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
|
|
hdr->nops++;
|
|
hdr->replen += decode_readdir_maxsz;
|
|
dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
|
|
__func__,
|
|
(unsigned long long)readdir->cookie,
|
|
((u32 *)readdir->verifier.data)[0],
|
|
((u32 *)readdir->verifier.data)[1],
|
|
attrs[0] & readdir->bitmask[0],
|
|
attrs[1] & readdir->bitmask[1]);
|
|
}
|
|
|
|
static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4);
|
|
*p = cpu_to_be32(OP_READLINK);
|
|
hdr->nops++;
|
|
hdr->replen += decode_readlink_maxsz;
|
|
}
|
|
|
|
static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 8 + name->len);
|
|
*p++ = cpu_to_be32(OP_REMOVE);
|
|
xdr_encode_opaque(p, name->name, name->len);
|
|
hdr->nops++;
|
|
hdr->replen += decode_remove_maxsz;
|
|
}
|
|
|
|
static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4);
|
|
*p = cpu_to_be32(OP_RENAME);
|
|
encode_string(xdr, oldname->len, oldname->name);
|
|
encode_string(xdr, newname->len, newname->name);
|
|
hdr->nops++;
|
|
hdr->replen += decode_rename_maxsz;
|
|
}
|
|
|
|
static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 12);
|
|
*p++ = cpu_to_be32(OP_RENEW);
|
|
xdr_encode_hyper(p, client_stateid->cl_clientid);
|
|
hdr->nops++;
|
|
hdr->replen += decode_renew_maxsz;
|
|
}
|
|
|
|
static void
|
|
encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4);
|
|
*p = cpu_to_be32(OP_RESTOREFH);
|
|
hdr->nops++;
|
|
hdr->replen += decode_restorefh_maxsz;
|
|
}
|
|
|
|
static int
|
|
encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
|
|
*p++ = cpu_to_be32(OP_SETATTR);
|
|
xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
|
|
p = reserve_space(xdr, 2*4);
|
|
*p++ = cpu_to_be32(1);
|
|
*p = cpu_to_be32(FATTR4_WORD0_ACL);
|
|
if (arg->acl_len % 4)
|
|
return -EINVAL;
|
|
p = reserve_space(xdr, 4);
|
|
*p = cpu_to_be32(arg->acl_len);
|
|
xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
|
|
hdr->nops++;
|
|
hdr->replen += decode_setacl_maxsz;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4);
|
|
*p = cpu_to_be32(OP_SAVEFH);
|
|
hdr->nops++;
|
|
hdr->replen += decode_savefh_maxsz;
|
|
}
|
|
|
|
static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
|
|
*p++ = cpu_to_be32(OP_SETATTR);
|
|
xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE);
|
|
hdr->nops++;
|
|
hdr->replen += decode_setattr_maxsz;
|
|
encode_attrs(xdr, arg->iap, server);
|
|
}
|
|
|
|
static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE);
|
|
*p++ = cpu_to_be32(OP_SETCLIENTID);
|
|
xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
|
|
|
|
encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
|
|
p = reserve_space(xdr, 4);
|
|
*p = cpu_to_be32(setclientid->sc_prog);
|
|
encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
|
|
encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
|
|
p = reserve_space(xdr, 4);
|
|
*p = cpu_to_be32(setclientid->sc_cb_ident);
|
|
hdr->nops++;
|
|
hdr->replen += decode_setclientid_maxsz;
|
|
}
|
|
|
|
static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE);
|
|
*p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM);
|
|
p = xdr_encode_hyper(p, arg->clientid);
|
|
xdr_encode_opaque_fixed(p, arg->confirm.data, NFS4_VERIFIER_SIZE);
|
|
hdr->nops++;
|
|
hdr->replen += decode_setclientid_confirm_maxsz;
|
|
}
|
|
|
|
static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4);
|
|
*p = cpu_to_be32(OP_WRITE);
|
|
|
|
encode_stateid(xdr, args->context, args->lock_context);
|
|
|
|
p = reserve_space(xdr, 16);
|
|
p = xdr_encode_hyper(p, args->offset);
|
|
*p++ = cpu_to_be32(args->stable);
|
|
*p = cpu_to_be32(args->count);
|
|
|
|
xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
|
|
hdr->nops++;
|
|
hdr->replen += decode_write_maxsz;
|
|
}
|
|
|
|
static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
|
|
|
|
*p++ = cpu_to_be32(OP_DELEGRETURN);
|
|
xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
|
|
hdr->nops++;
|
|
hdr->replen += decode_delegreturn_maxsz;
|
|
}
|
|
|
|
#if defined(CONFIG_NFS_V4_1)
|
|
/* NFSv4.1 operations */
|
|
static void encode_exchange_id(struct xdr_stream *xdr,
|
|
struct nfs41_exchange_id_args *args,
|
|
struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 4 + sizeof(args->verifier->data));
|
|
*p++ = cpu_to_be32(OP_EXCHANGE_ID);
|
|
xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data));
|
|
|
|
encode_string(xdr, args->id_len, args->id);
|
|
|
|
p = reserve_space(xdr, 12);
|
|
*p++ = cpu_to_be32(args->flags);
|
|
*p++ = cpu_to_be32(0); /* zero length state_protect4_a */
|
|
*p = cpu_to_be32(0); /* zero length implementation id array */
|
|
hdr->nops++;
|
|
hdr->replen += decode_exchange_id_maxsz;
|
|
}
|
|
|
|
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;
|
|
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;
|
|
|
|
len = scnprintf(machine_name, sizeof(machine_name), "%s",
|
|
clp->cl_ipaddr);
|
|
|
|
p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12);
|
|
*p++ = cpu_to_be32(OP_CREATE_SESSION);
|
|
p = xdr_encode_hyper(p, clp->cl_ex_clid);
|
|
*p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
|
|
*p++ = cpu_to_be32(args->flags); /*flags */
|
|
|
|
/* Fore Channel */
|
|
*p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
|
|
*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 */
|
|
*p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
|
|
*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 */
|
|
|
|
/* Back Channel */
|
|
*p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
|
|
*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 */
|
|
|
|
*p++ = cpu_to_be32(args->cb_program); /* cb_program */
|
|
*p++ = cpu_to_be32(1);
|
|
*p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
|
|
|
|
/* authsys_parms rfc1831 */
|
|
*p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */
|
|
p = xdr_encode_opaque(p, machine_name, len);
|
|
*p++ = cpu_to_be32(0); /* UID */
|
|
*p++ = cpu_to_be32(0); /* GID */
|
|
*p = cpu_to_be32(0); /* No more gids */
|
|
hdr->nops++;
|
|
hdr->replen += decode_create_session_maxsz;
|
|
}
|
|
|
|
static void encode_destroy_session(struct xdr_stream *xdr,
|
|
struct nfs4_session *session,
|
|
struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN);
|
|
*p++ = cpu_to_be32(OP_DESTROY_SESSION);
|
|
xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
|
|
hdr->nops++;
|
|
hdr->replen += decode_destroy_session_maxsz;
|
|
}
|
|
|
|
static void encode_reclaim_complete(struct xdr_stream *xdr,
|
|
struct nfs41_reclaim_complete_args *args,
|
|
struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, 8);
|
|
*p++ = cpu_to_be32(OP_RECLAIM_COMPLETE);
|
|
*p++ = cpu_to_be32(args->one_fs);
|
|
hdr->nops++;
|
|
hdr->replen += decode_reclaim_complete_maxsz;
|
|
}
|
|
#endif /* CONFIG_NFS_V4_1 */
|
|
|
|
static void encode_sequence(struct xdr_stream *xdr,
|
|
const struct nfs4_sequence_args *args,
|
|
struct compound_hdr *hdr)
|
|
{
|
|
#if defined(CONFIG_NFS_V4_1)
|
|
struct nfs4_session *session = args->sa_session;
|
|
struct nfs4_slot_table *tp;
|
|
struct nfs4_slot *slot;
|
|
__be32 *p;
|
|
|
|
if (!session)
|
|
return;
|
|
|
|
tp = &session->fc_slot_table;
|
|
|
|
WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
|
|
slot = tp->slots + args->sa_slotid;
|
|
|
|
p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN + 16);
|
|
*p++ = cpu_to_be32(OP_SEQUENCE);
|
|
|
|
/*
|
|
* 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],
|
|
slot->seq_nr, args->sa_slotid,
|
|
tp->highest_used_slotid, args->sa_cache_this);
|
|
p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
|
|
*p++ = cpu_to_be32(slot->seq_nr);
|
|
*p++ = cpu_to_be32(args->sa_slotid);
|
|
*p++ = cpu_to_be32(tp->highest_used_slotid);
|
|
*p = cpu_to_be32(args->sa_cache_this);
|
|
hdr->nops++;
|
|
hdr->replen += decode_sequence_maxsz;
|
|
#endif /* CONFIG_NFS_V4_1 */
|
|
}
|
|
|
|
/*
|
|
* END OF "GENERIC" ENCODE ROUTINES.
|
|
*/
|
|
|
|
static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
|
|
{
|
|
#if defined(CONFIG_NFS_V4_1)
|
|
if (args->sa_session)
|
|
return args->sa_session->clp->cl_mvops->minor_version;
|
|
#endif /* CONFIG_NFS_V4_1 */
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode an ACCESS request
|
|
*/
|
|
static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
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);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode LOOKUP request
|
|
*/
|
|
static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
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);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode LOOKUP_ROOT request
|
|
*/
|
|
static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
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);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode REMOVE request
|
|
*/
|
|
static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
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);
|
|
encode_getfattr(&xdr, args->bitmask, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode RENAME request
|
|
*/
|
|
static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs_renameargs *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
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);
|
|
encode_getfattr(&xdr, args->bitmask, &hdr);
|
|
encode_restorefh(&xdr, &hdr);
|
|
encode_getfattr(&xdr, args->bitmask, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode LINK request
|
|
*/
|
|
static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
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_getfattr(&xdr, args->bitmask, &hdr);
|
|
encode_restorefh(&xdr, &hdr);
|
|
encode_getfattr(&xdr, args->bitmask, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode CREATE request
|
|
*/
|
|
static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_sequence(&xdr, &args->seq_args, &hdr);
|
|
encode_putfh(&xdr, args->dir_fh, &hdr);
|
|
encode_savefh(&xdr, &hdr);
|
|
encode_create(&xdr, args, &hdr);
|
|
encode_getfh(&xdr, &hdr);
|
|
encode_getfattr(&xdr, args->bitmask, &hdr);
|
|
encode_restorefh(&xdr, &hdr);
|
|
encode_getfattr(&xdr, args->bitmask, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode SYMLINK request
|
|
*/
|
|
static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
|
|
{
|
|
return nfs4_xdr_enc_create(req, p, args);
|
|
}
|
|
|
|
/*
|
|
* Encode GETATTR request
|
|
*/
|
|
static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
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);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode a CLOSE request
|
|
*/
|
|
static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
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);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode an OPEN request
|
|
*/
|
|
static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_sequence(&xdr, &args->seq_args, &hdr);
|
|
encode_putfh(&xdr, args->fh, &hdr);
|
|
encode_savefh(&xdr, &hdr);
|
|
encode_open(&xdr, args, &hdr);
|
|
encode_getfh(&xdr, &hdr);
|
|
encode_getfattr(&xdr, args->bitmask, &hdr);
|
|
encode_restorefh(&xdr, &hdr);
|
|
encode_getfattr(&xdr, args->bitmask, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode an OPEN_CONFIRM request
|
|
*/
|
|
static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.nops = 0,
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_putfh(&xdr, args->fh, &hdr);
|
|
encode_open_confirm(&xdr, args, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode an OPEN request with no attributes.
|
|
*/
|
|
static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
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_getfattr(&xdr, args->bitmask, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode an OPEN_DOWNGRADE request
|
|
*/
|
|
static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
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);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode a LOCK request
|
|
*/
|
|
static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_sequence(&xdr, &args->seq_args, &hdr);
|
|
encode_putfh(&xdr, args->fh, &hdr);
|
|
encode_lock(&xdr, args, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode a LOCKT request
|
|
*/
|
|
static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_sequence(&xdr, &args->seq_args, &hdr);
|
|
encode_putfh(&xdr, args->fh, &hdr);
|
|
encode_lockt(&xdr, args, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode a LOCKU request
|
|
*/
|
|
static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_sequence(&xdr, &args->seq_args, &hdr);
|
|
encode_putfh(&xdr, args->fh, &hdr);
|
|
encode_locku(&xdr, args, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
static int nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, __be32 *p, struct nfs_release_lockowner_args *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = 0,
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_release_lockowner(&xdr, &args->lock_owner, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode a READLINK request
|
|
*/
|
|
static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
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);
|
|
|
|
xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
|
|
args->pgbase, args->pglen);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode a READDIR request
|
|
*/
|
|
static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
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);
|
|
|
|
xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
|
|
args->pgbase, args->count);
|
|
dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
|
|
__func__, hdr.replen << 2, args->pages,
|
|
args->pgbase, args->count);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode a READ request
|
|
*/
|
|
static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_sequence(&xdr, &args->seq_args, &hdr);
|
|
encode_putfh(&xdr, args->fh, &hdr);
|
|
encode_read(&xdr, args, &hdr);
|
|
|
|
xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
|
|
args->pages, args->pgbase, args->count);
|
|
req->rq_rcv_buf.flags |= XDRBUF_READ;
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode an SETATTR request
|
|
*/
|
|
static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
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);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode a GETACL request
|
|
*/
|
|
static int
|
|
nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
|
|
struct nfs_getaclargs *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
uint32_t replen;
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_sequence(&xdr, &args->seq_args, &hdr);
|
|
encode_putfh(&xdr, args->fh, &hdr);
|
|
replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1;
|
|
encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr);
|
|
|
|
xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
|
|
args->acl_pages, args->acl_pgbase, args->acl_len);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode a WRITE request
|
|
*/
|
|
static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_sequence(&xdr, &args->seq_args, &hdr);
|
|
encode_putfh(&xdr, args->fh, &hdr);
|
|
encode_write(&xdr, args, &hdr);
|
|
req->rq_snd_buf.flags |= XDRBUF_WRITE;
|
|
encode_getfattr(&xdr, args->bitmask, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* a COMMIT request
|
|
*/
|
|
static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_sequence(&xdr, &args->seq_args, &hdr);
|
|
encode_putfh(&xdr, args->fh, &hdr);
|
|
encode_commit(&xdr, args, &hdr);
|
|
encode_getfattr(&xdr, args->bitmask, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FSINFO request
|
|
*/
|
|
static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
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);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* a PATHCONF request
|
|
*/
|
|
static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
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],
|
|
&hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* a STATFS request
|
|
*/
|
|
static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
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],
|
|
args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* GETATTR_BITMAP request
|
|
*/
|
|
static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p,
|
|
struct nfs4_server_caps_arg *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
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|
|
|
FATTR4_WORD0_LINK_SUPPORT|
|
|
FATTR4_WORD0_SYMLINK_SUPPORT|
|
|
FATTR4_WORD0_ACLSUPPORT, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* a RENEW request
|
|
*/
|
|
static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.nops = 0,
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_renew(&xdr, clp, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* a SETCLIENTID request
|
|
*/
|
|
static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.nops = 0,
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_setclientid(&xdr, sc, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* a SETCLIENTID_CONFIRM request
|
|
*/
|
|
static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid_res *arg)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.nops = 0,
|
|
};
|
|
const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_setclientid_confirm(&xdr, arg, &hdr);
|
|
encode_putrootfh(&xdr, &hdr);
|
|
encode_fsinfo(&xdr, lease_bitmap, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* DELEGRETURN request
|
|
*/
|
|
static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_sequence(&xdr, &args->seq_args, &hdr);
|
|
encode_putfh(&xdr, args->fhandle, &hdr);
|
|
encode_delegreturn(&xdr, args->stateid, &hdr);
|
|
encode_getfattr(&xdr, args->bitmask, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Encode FS_LOCATIONS request
|
|
*/
|
|
static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
uint32_t replen;
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
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);
|
|
replen = hdr.replen; /* get the attribute into args->page */
|
|
encode_fs_locations(&xdr, args->bitmask, &hdr);
|
|
|
|
xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
|
|
0, PAGE_SIZE);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
#if defined(CONFIG_NFS_V4_1)
|
|
/*
|
|
* EXCHANGE_ID request
|
|
*/
|
|
static int nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, uint32_t *p,
|
|
struct nfs41_exchange_id_args *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = args->client->cl_mvops->minor_version,
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_exchange_id(&xdr, args, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* a CREATE_SESSION request
|
|
*/
|
|
static int nfs4_xdr_enc_create_session(struct rpc_rqst *req, uint32_t *p,
|
|
struct nfs41_create_session_args *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = args->client->cl_mvops->minor_version,
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_create_session(&xdr, args, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* a DESTROY_SESSION request
|
|
*/
|
|
static int nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, uint32_t *p,
|
|
struct nfs4_session *session)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = session->clp->cl_mvops->minor_version,
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_destroy_session(&xdr, session, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* a SEQUENCE request
|
|
*/
|
|
static int nfs4_xdr_enc_sequence(struct rpc_rqst *req, uint32_t *p,
|
|
struct nfs4_sequence_args *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(args),
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_sequence(&xdr, args, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* a GET_LEASE_TIME request
|
|
*/
|
|
static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p,
|
|
struct nfs4_get_lease_time_args *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
|
|
};
|
|
const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_sequence(&xdr, &args->la_seq_args, &hdr);
|
|
encode_putrootfh(&xdr, &hdr);
|
|
encode_fsinfo(&xdr, lease_bitmap, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* a RECLAIM_COMPLETE request
|
|
*/
|
|
static int nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, uint32_t *p,
|
|
struct nfs41_reclaim_complete_args *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args)
|
|
};
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_sequence(&xdr, &args->seq_args, &hdr);
|
|
encode_reclaim_complete(&xdr, args, &hdr);
|
|
encode_nops(&hdr);
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_NFS_V4_1 */
|
|
|
|
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);
|
|
}
|
|
|
|
static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
|
|
{
|
|
__be32 *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;
|
|
*string = (char *)p;
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
hdr->status = be32_to_cpup(p++);
|
|
hdr->taglen = be32_to_cpup(p);
|
|
|
|
p = xdr_inline_decode(xdr, hdr->taglen + 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
hdr->tag = (char *)p;
|
|
p += XDR_QUADLEN(hdr->taglen);
|
|
hdr->nops = be32_to_cpup(p);
|
|
if (unlikely(hdr->nops < 1))
|
|
return nfs4_stat_to_errno(hdr->status);
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
|
|
{
|
|
__be32 *p;
|
|
uint32_t opnum;
|
|
int32_t nfserr;
|
|
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
opnum = be32_to_cpup(p++);
|
|
if (opnum != expected) {
|
|
dprintk("nfs: Server returned operation"
|
|
" %d but we issued a request for %d\n",
|
|
opnum, expected);
|
|
return -EIO;
|
|
}
|
|
nfserr = be32_to_cpup(p);
|
|
if (nfserr != NFS_OK)
|
|
return nfs4_stat_to_errno(nfserr);
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
/* Dummy routine */
|
|
static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
|
|
{
|
|
__be32 *p;
|
|
unsigned int strlen;
|
|
char *str;
|
|
|
|
p = xdr_inline_decode(xdr, 12);
|
|
if (likely(p))
|
|
return decode_opaque_inline(xdr, &strlen, &str);
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
|
|
{
|
|
uint32_t bmlen;
|
|
__be32 *p;
|
|
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
bmlen = be32_to_cpup(p);
|
|
|
|
bitmap[0] = bitmap[1] = 0;
|
|
p = xdr_inline_decode(xdr, (bmlen << 2));
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
if (bmlen > 0) {
|
|
bitmap[0] = be32_to_cpup(p++);
|
|
if (bmlen > 1)
|
|
bitmap[1] = be32_to_cpup(p);
|
|
}
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
*attrlen = be32_to_cpup(p);
|
|
*savep = xdr->p;
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
|
|
{
|
|
if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
|
|
int ret;
|
|
ret = decode_attr_bitmap(xdr, bitmask);
|
|
if (unlikely(ret < 0))
|
|
return ret;
|
|
bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
|
|
} else
|
|
bitmask[0] = bitmask[1] = 0;
|
|
dprintk("%s: bitmask=%08x:%08x\n", __func__, bitmask[0], bitmask[1]);
|
|
return 0;
|
|
}
|
|
|
|
static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
|
|
{
|
|
__be32 *p;
|
|
int ret = 0;
|
|
|
|
*type = 0;
|
|
if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
*type = be32_to_cpup(p);
|
|
if (*type < NF4REG || *type > NF4NAMEDATTR) {
|
|
dprintk("%s: bad type %d\n", __func__, *type);
|
|
return -EIO;
|
|
}
|
|
bitmap[0] &= ~FATTR4_WORD0_TYPE;
|
|
ret = NFS_ATTR_FATTR_TYPE;
|
|
}
|
|
dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
|
|
return ret;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
|
|
{
|
|
__be32 *p;
|
|
int ret = 0;
|
|
|
|
*change = 0;
|
|
if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
xdr_decode_hyper(p, change);
|
|
bitmap[0] &= ~FATTR4_WORD0_CHANGE;
|
|
ret = NFS_ATTR_FATTR_CHANGE;
|
|
}
|
|
dprintk("%s: change attribute=%Lu\n", __func__,
|
|
(unsigned long long)*change);
|
|
return ret;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
|
|
{
|
|
__be32 *p;
|
|
int ret = 0;
|
|
|
|
*size = 0;
|
|
if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
xdr_decode_hyper(p, size);
|
|
bitmap[0] &= ~FATTR4_WORD0_SIZE;
|
|
ret = NFS_ATTR_FATTR_SIZE;
|
|
}
|
|
dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
|
|
return ret;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
|
|
{
|
|
__be32 *p;
|
|
|
|
*res = 0;
|
|
if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
*res = be32_to_cpup(p);
|
|
bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
|
|
}
|
|
dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
|
|
{
|
|
__be32 *p;
|
|
|
|
*res = 0;
|
|
if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
*res = be32_to_cpup(p);
|
|
bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
|
|
}
|
|
dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
|
|
{
|
|
__be32 *p;
|
|
int ret = 0;
|
|
|
|
fsid->major = 0;
|
|
fsid->minor = 0;
|
|
if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
|
|
p = xdr_inline_decode(xdr, 16);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
p = xdr_decode_hyper(p, &fsid->major);
|
|
xdr_decode_hyper(p, &fsid->minor);
|
|
bitmap[0] &= ~FATTR4_WORD0_FSID;
|
|
ret = NFS_ATTR_FATTR_FSID;
|
|
}
|
|
dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
|
|
(unsigned long long)fsid->major,
|
|
(unsigned long long)fsid->minor);
|
|
return ret;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
|
|
{
|
|
__be32 *p;
|
|
|
|
*res = 60;
|
|
if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
*res = be32_to_cpup(p);
|
|
bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
|
|
}
|
|
dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap)
|
|
{
|
|
__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;
|
|
}
|
|
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;
|
|
|
|
if (fh != NULL)
|
|
memset(fh, 0, sizeof(*fh));
|
|
|
|
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;
|
|
if (fh != NULL) {
|
|
memcpy(fh->data, p, len);
|
|
fh->size = len;
|
|
}
|
|
bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
|
|
}
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
|
|
{
|
|
__be32 *p;
|
|
|
|
*res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
|
|
if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
*res = be32_to_cpup(p);
|
|
bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
|
|
}
|
|
dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
|
|
{
|
|
__be32 *p;
|
|
int ret = 0;
|
|
|
|
*fileid = 0;
|
|
if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
xdr_decode_hyper(p, fileid);
|
|
bitmap[0] &= ~FATTR4_WORD0_FILEID;
|
|
ret = NFS_ATTR_FATTR_FILEID;
|
|
}
|
|
dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
|
|
return ret;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
|
|
{
|
|
__be32 *p;
|
|
int ret = 0;
|
|
|
|
*fileid = 0;
|
|
if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
xdr_decode_hyper(p, fileid);
|
|
bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
|
|
ret = NFS_ATTR_FATTR_FILEID;
|
|
}
|
|
dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
|
|
return ret;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
|
|
{
|
|
__be32 *p;
|
|
int status = 0;
|
|
|
|
*res = 0;
|
|
if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
xdr_decode_hyper(p, res);
|
|
bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
|
|
}
|
|
dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
|
|
return status;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
|
|
{
|
|
__be32 *p;
|
|
int status = 0;
|
|
|
|
*res = 0;
|
|
if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
xdr_decode_hyper(p, res);
|
|
bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
|
|
}
|
|
dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
|
|
return status;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
|
|
{
|
|
__be32 *p;
|
|
int status = 0;
|
|
|
|
*res = 0;
|
|
if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
xdr_decode_hyper(p, res);
|
|
bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
|
|
}
|
|
dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
|
|
return status;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
|
|
{
|
|
u32 n;
|
|
__be32 *p;
|
|
int status = 0;
|
|
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
n = be32_to_cpup(p);
|
|
if (n == 0)
|
|
goto root_path;
|
|
dprintk("path ");
|
|
path->ncomponents = 0;
|
|
while (path->ncomponents < n) {
|
|
struct nfs4_string *component = &path->components[path->ncomponents];
|
|
status = decode_opaque_inline(xdr, &component->len, &component->data);
|
|
if (unlikely(status != 0))
|
|
goto out_eio;
|
|
if (path->ncomponents != n)
|
|
dprintk("/");
|
|
dprintk("%s", component->data);
|
|
if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
|
|
path->ncomponents++;
|
|
else {
|
|
dprintk("cannot parse %d components in path\n", n);
|
|
goto out_eio;
|
|
}
|
|
}
|
|
out:
|
|
dprintk("\n");
|
|
return status;
|
|
root_path:
|
|
/* a root pathname is sent as a zero component4 */
|
|
path->ncomponents = 1;
|
|
path->components[0].len=0;
|
|
path->components[0].data=NULL;
|
|
dprintk("path /\n");
|
|
goto out;
|
|
out_eio:
|
|
dprintk(" status %d", status);
|
|
status = -EIO;
|
|
goto out;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
|
|
{
|
|
int n;
|
|
__be32 *p;
|
|
int status = -EIO;
|
|
|
|
if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
|
|
goto out;
|
|
status = 0;
|
|
if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
|
|
goto out;
|
|
dprintk("%s: fsroot ", __func__);
|
|
status = decode_pathname(xdr, &res->fs_path);
|
|
if (unlikely(status != 0))
|
|
goto out;
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
n = be32_to_cpup(p);
|
|
if (n <= 0)
|
|
goto out_eio;
|
|
res->nlocations = 0;
|
|
while (res->nlocations < n) {
|
|
u32 m;
|
|
struct nfs4_fs_location *loc = &res->locations[res->nlocations];
|
|
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
m = be32_to_cpup(p);
|
|
|
|
loc->nservers = 0;
|
|
dprintk("%s: servers ", __func__);
|
|
while (loc->nservers < m) {
|
|
struct nfs4_string *server = &loc->servers[loc->nservers];
|
|
status = decode_opaque_inline(xdr, &server->len, &server->data);
|
|
if (unlikely(status != 0))
|
|
goto out_eio;
|
|
dprintk("%s ", server->data);
|
|
if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
|
|
loc->nservers++;
|
|
else {
|
|
unsigned int i;
|
|
dprintk("%s: using first %u of %u servers "
|
|
"returned for location %u\n",
|
|
__func__,
|
|
NFS4_FS_LOCATION_MAXSERVERS,
|
|
m, res->nlocations);
|
|
for (i = loc->nservers; i < m; i++) {
|
|
unsigned int len;
|
|
char *data;
|
|
status = decode_opaque_inline(xdr, &len, &data);
|
|
if (unlikely(status != 0))
|
|
goto out_eio;
|
|
}
|
|
}
|
|
}
|
|
status = decode_pathname(xdr, &loc->rootpath);
|
|
if (unlikely(status != 0))
|
|
goto out_eio;
|
|
if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
|
|
res->nlocations++;
|
|
}
|
|
if (res->nlocations != 0)
|
|
status = NFS_ATTR_FATTR_V4_REFERRAL;
|
|
out:
|
|
dprintk("%s: fs_locations done, error = %d\n", __func__, status);
|
|
return status;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
out_eio:
|
|
status = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
|
|
{
|
|
__be32 *p;
|
|
int status = 0;
|
|
|
|
*res = 0;
|
|
if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
xdr_decode_hyper(p, res);
|
|
bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
|
|
}
|
|
dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
|
|
return status;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
|
|
{
|
|
__be32 *p;
|
|
int status = 0;
|
|
|
|
*maxlink = 1;
|
|
if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
*maxlink = be32_to_cpup(p);
|
|
bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
|
|
}
|
|
dprintk("%s: maxlink=%u\n", __func__, *maxlink);
|
|
return status;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
|
|
{
|
|
__be32 *p;
|
|
int status = 0;
|
|
|
|
*maxname = 1024;
|
|
if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
*maxname = be32_to_cpup(p);
|
|
bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
|
|
}
|
|
dprintk("%s: maxname=%u\n", __func__, *maxname);
|
|
return status;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
|
|
{
|
|
__be32 *p;
|
|
int status = 0;
|
|
|
|
*res = 1024;
|
|
if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
|
|
uint64_t maxread;
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
xdr_decode_hyper(p, &maxread);
|
|
if (maxread > 0x7FFFFFFF)
|
|
maxread = 0x7FFFFFFF;
|
|
*res = (uint32_t)maxread;
|
|
bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
|
|
}
|
|
dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
|
|
return status;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
|
|
{
|
|
__be32 *p;
|
|
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;
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
xdr_decode_hyper(p, &maxwrite);
|
|
if (maxwrite > 0x7FFFFFFF)
|
|
maxwrite = 0x7FFFFFFF;
|
|
*res = (uint32_t)maxwrite;
|
|
bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
|
|
}
|
|
dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
|
|
return status;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
|
|
{
|
|
uint32_t tmp;
|
|
__be32 *p;
|
|
int ret = 0;
|
|
|
|
*mode = 0;
|
|
if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
tmp = be32_to_cpup(p);
|
|
*mode = tmp & ~S_IFMT;
|
|
bitmap[1] &= ~FATTR4_WORD1_MODE;
|
|
ret = NFS_ATTR_FATTR_MODE;
|
|
}
|
|
dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
|
|
return ret;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
|
|
{
|
|
__be32 *p;
|
|
int ret = 0;
|
|
|
|
*nlink = 1;
|
|
if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
*nlink = be32_to_cpup(p);
|
|
bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
|
|
ret = NFS_ATTR_FATTR_NLINK;
|
|
}
|
|
dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
|
|
return ret;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
|
|
struct nfs_client *clp, uint32_t *uid, int may_sleep)
|
|
{
|
|
uint32_t len;
|
|
__be32 *p;
|
|
int ret = 0;
|
|
|
|
*uid = -2;
|
|
if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
|
|
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 (!may_sleep) {
|
|
/* do nothing */
|
|
} else if (len < XDR_MAX_NETOBJ) {
|
|
if (nfs_map_name_to_uid(clp, (char *)p, len, uid) == 0)
|
|
ret = NFS_ATTR_FATTR_OWNER;
|
|
else
|
|
dprintk("%s: nfs_map_name_to_uid failed!\n",
|
|
__func__);
|
|
} else
|
|
dprintk("%s: name too long (%u)!\n",
|
|
__func__, len);
|
|
bitmap[1] &= ~FATTR4_WORD1_OWNER;
|
|
}
|
|
dprintk("%s: uid=%d\n", __func__, (int)*uid);
|
|
return ret;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
|
|
struct nfs_client *clp, uint32_t *gid, int may_sleep)
|
|
{
|
|
uint32_t len;
|
|
__be32 *p;
|
|
int ret = 0;
|
|
|
|
*gid = -2;
|
|
if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
|
|
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 (!may_sleep) {
|
|
/* do nothing */
|
|
} else if (len < XDR_MAX_NETOBJ) {
|
|
if (nfs_map_group_to_gid(clp, (char *)p, len, gid) == 0)
|
|
ret = NFS_ATTR_FATTR_GROUP;
|
|
else
|
|
dprintk("%s: nfs_map_group_to_gid failed!\n",
|
|
__func__);
|
|
} else
|
|
dprintk("%s: name too long (%u)!\n",
|
|
__func__, len);
|
|
bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
|
|
}
|
|
dprintk("%s: gid=%d\n", __func__, (int)*gid);
|
|
return ret;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
|
|
{
|
|
uint32_t major = 0, minor = 0;
|
|
__be32 *p;
|
|
int ret = 0;
|
|
|
|
*rdev = MKDEV(0,0);
|
|
if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
|
|
dev_t tmp;
|
|
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
major = be32_to_cpup(p++);
|
|
minor = be32_to_cpup(p);
|
|
tmp = MKDEV(major, minor);
|
|
if (MAJOR(tmp) == major && MINOR(tmp) == minor)
|
|
*rdev = tmp;
|
|
bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
|
|
ret = NFS_ATTR_FATTR_RDEV;
|
|
}
|
|
dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
|
|
return ret;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
|
|
{
|
|
__be32 *p;
|
|
int status = 0;
|
|
|
|
*res = 0;
|
|
if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
xdr_decode_hyper(p, res);
|
|
bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
|
|
}
|
|
dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
|
|
return status;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
|
|
{
|
|
__be32 *p;
|
|
int status = 0;
|
|
|
|
*res = 0;
|
|
if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
xdr_decode_hyper(p, res);
|
|
bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
|
|
}
|
|
dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
|
|
return status;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
|
|
{
|
|
__be32 *p;
|
|
int status = 0;
|
|
|
|
*res = 0;
|
|
if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
xdr_decode_hyper(p, res);
|
|
bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
|
|
}
|
|
dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
|
|
return status;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
|
|
{
|
|
__be32 *p;
|
|
int ret = 0;
|
|
|
|
*used = 0;
|
|
if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
xdr_decode_hyper(p, used);
|
|
bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
|
|
ret = NFS_ATTR_FATTR_SPACE_USED;
|
|
}
|
|
dprintk("%s: space used=%Lu\n", __func__,
|
|
(unsigned long long)*used);
|
|
return ret;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
|
|
{
|
|
__be32 *p;
|
|
uint64_t sec;
|
|
uint32_t nsec;
|
|
|
|
p = xdr_inline_decode(xdr, 12);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
p = xdr_decode_hyper(p, &sec);
|
|
nsec = be32_to_cpup(p);
|
|
time->tv_sec = (time_t)sec;
|
|
time->tv_nsec = (long)nsec;
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
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);
|
|
if (status == 0)
|
|
status = NFS_ATTR_FATTR_ATIME;
|
|
bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
|
|
}
|
|
dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
|
|
return status;
|
|
}
|
|
|
|
static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
|
|
{
|
|
int status = 0;
|
|
|
|
time->tv_sec = 0;
|
|
time->tv_nsec = 0;
|
|
if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
|
|
status = decode_attr_time(xdr, time);
|
|
if (status == 0)
|
|
status = NFS_ATTR_FATTR_CTIME;
|
|
bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
|
|
}
|
|
dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
|
|
return status;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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);
|
|
if (status == 0)
|
|
status = NFS_ATTR_FATTR_MTIME;
|
|
bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
|
|
}
|
|
dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
|
|
return status;
|
|
}
|
|
|
|
static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
|
|
{
|
|
unsigned int attrwords = XDR_QUADLEN(attrlen);
|
|
unsigned int nwords = xdr->p - savep;
|
|
|
|
if (unlikely(attrwords != nwords)) {
|
|
dprintk("%s: server returned incorrect attribute length: "
|
|
"%u %c %u\n",
|
|
__func__,
|
|
attrwords << 2,
|
|
(attrwords < nwords) ? '<' : '>',
|
|
nwords << 2);
|
|
return -EIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = xdr_inline_decode(xdr, 20);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
cinfo->atomic = be32_to_cpup(p++);
|
|
p = xdr_decode_hyper(p, &cinfo->before);
|
|
xdr_decode_hyper(p, &cinfo->after);
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
|
|
{
|
|
__be32 *p;
|
|
uint32_t supp, acc;
|
|
int status;
|
|
|
|
status = decode_op_hdr(xdr, OP_ACCESS);
|
|
if (status)
|
|
return status;
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
supp = be32_to_cpup(p++);
|
|
acc = be32_to_cpup(p);
|
|
access->supported = supp;
|
|
access->access = acc;
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
|
|
{
|
|
__be32 *p;
|
|
|
|
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)
|
|
{
|
|
return decode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE);
|
|
}
|
|
|
|
static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
|
|
{
|
|
int status;
|
|
|
|
status = decode_op_hdr(xdr, OP_CLOSE);
|
|
if (status != -EIO)
|
|
nfs_increment_open_seqid(status, res->seqid);
|
|
if (!status)
|
|
status = decode_stateid(xdr, &res->stateid);
|
|
return status;
|
|
}
|
|
|
|
static int decode_verifier(struct xdr_stream *xdr, void *verifier)
|
|
{
|
|
return decode_opaque_fixed(xdr, verifier, 8);
|
|
}
|
|
|
|
static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
|
|
{
|
|
int status;
|
|
|
|
status = decode_op_hdr(xdr, OP_COMMIT);
|
|
if (!status)
|
|
status = decode_verifier(xdr, res->verf->verifier);
|
|
return status;
|
|
}
|
|
|
|
static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
|
|
{
|
|
__be32 *p;
|
|
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;
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
bmlen = be32_to_cpup(p);
|
|
p = xdr_inline_decode(xdr, bmlen << 2);
|
|
if (likely(p))
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
|
|
{
|
|
__be32 *savep;
|
|
uint32_t attrlen, bitmap[2] = {0};
|
|
int status;
|
|
|
|
if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
|
|
goto xdr_error;
|
|
status = verify_attr_len(xdr, savep, attrlen);
|
|
xdr_error:
|
|
dprintk("%s: xdr returned %d!\n", __func__, -status);
|
|
return status;
|
|
}
|
|
|
|
static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
|
|
{
|
|
__be32 *savep;
|
|
uint32_t attrlen, bitmap[2] = {0};
|
|
int status;
|
|
|
|
if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
|
|
goto xdr_error;
|
|
|
|
if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
|
|
goto xdr_error;
|
|
|
|
status = verify_attr_len(xdr, savep, attrlen);
|
|
xdr_error:
|
|
dprintk("%s: xdr returned %d!\n", __func__, -status);
|
|
return status;
|
|
}
|
|
|
|
static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
|
|
{
|
|
__be32 *savep;
|
|
uint32_t attrlen, bitmap[2] = {0};
|
|
int status;
|
|
|
|
if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
|
|
goto xdr_error;
|
|
|
|
if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
|
|
goto xdr_error;
|
|
|
|
status = verify_attr_len(xdr, savep, attrlen);
|
|
xdr_error:
|
|
dprintk("%s: xdr returned %d!\n", __func__, -status);
|
|
return status;
|
|
}
|
|
|
|
static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
|
|
struct nfs_fattr *fattr, struct nfs_fh *fh,
|
|
const struct nfs_server *server, int may_sleep)
|
|
{
|
|
int status;
|
|
umode_t fmode = 0;
|
|
uint64_t fileid;
|
|
uint32_t type;
|
|
|
|
status = decode_attr_type(xdr, bitmap, &type);
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
fattr->mode = 0;
|
|
if (status != 0) {
|
|
fattr->mode |= nfs_type2fmt[type];
|
|
fattr->valid |= status;
|
|
}
|
|
|
|
status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
fattr->valid |= status;
|
|
|
|
status = decode_attr_size(xdr, bitmap, &fattr->size);
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
fattr->valid |= status;
|
|
|
|
status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
fattr->valid |= status;
|
|
|
|
status = decode_attr_error(xdr, bitmap);
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
|
|
status = decode_attr_filehandle(xdr, bitmap, fh);
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
|
|
status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
fattr->valid |= status;
|
|
|
|
status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
|
|
struct nfs4_fs_locations,
|
|
fattr));
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
fattr->valid |= status;
|
|
|
|
status = decode_attr_mode(xdr, bitmap, &fmode);
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
if (status != 0) {
|
|
fattr->mode |= fmode;
|
|
fattr->valid |= status;
|
|
}
|
|
|
|
status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
fattr->valid |= status;
|
|
|
|
status = decode_attr_owner(xdr, bitmap, server->nfs_client,
|
|
&fattr->uid, may_sleep);
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
fattr->valid |= status;
|
|
|
|
status = decode_attr_group(xdr, bitmap, server->nfs_client,
|
|
&fattr->gid, may_sleep);
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
fattr->valid |= status;
|
|
|
|
status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
fattr->valid |= status;
|
|
|
|
status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
fattr->valid |= status;
|
|
|
|
status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
fattr->valid |= status;
|
|
|
|
status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
fattr->valid |= status;
|
|
|
|
status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
fattr->valid |= status;
|
|
|
|
status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid);
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
if (status != 0 && !(fattr->valid & status)) {
|
|
fattr->fileid = fileid;
|
|
fattr->valid |= status;
|
|
}
|
|
|
|
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,
|
|
struct nfs_fh *fh, const struct nfs_server *server, int may_sleep)
|
|
{
|
|
__be32 *savep;
|
|
uint32_t attrlen,
|
|
bitmap[2] = {0};
|
|
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;
|
|
|
|
status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, server, may_sleep);
|
|
if (status < 0)
|
|
goto xdr_error;
|
|
|
|
status = verify_attr_len(xdr, savep, attrlen);
|
|
xdr_error:
|
|
dprintk("%s: xdr returned %d\n", __func__, -status);
|
|
return status;
|
|
}
|
|
|
|
static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
|
|
const struct nfs_server *server, int may_sleep)
|
|
{
|
|
return decode_getfattr_generic(xdr, fattr, NULL, server, may_sleep);
|
|
}
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
uint32_t *p;
|
|
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)
|
|
printk(KERN_INFO "%s: Warning: Multiple pNFS layout drivers "
|
|
"per filesystem not supported\n", __func__);
|
|
|
|
/* 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;
|
|
}
|
|
|
|
static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
|
|
{
|
|
__be32 *savep;
|
|
uint32_t attrlen, bitmap[2];
|
|
int status;
|
|
|
|
if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
|
|
goto xdr_error;
|
|
|
|
fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
|
|
|
|
if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
|
|
goto xdr_error;
|
|
if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
|
|
goto xdr_error;
|
|
fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
|
|
if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
|
|
goto xdr_error;
|
|
fsinfo->wtpref = fsinfo->wtmax;
|
|
status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
|
|
if (status != 0)
|
|
goto xdr_error;
|
|
status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
|
|
if (status != 0)
|
|
goto xdr_error;
|
|
|
|
status = verify_attr_len(xdr, savep, attrlen);
|
|
xdr_error:
|
|
dprintk("%s: xdr returned %d!\n", __func__, -status);
|
|
return status;
|
|
}
|
|
|
|
static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
|
|
{
|
|
__be32 *p;
|
|
uint32_t len;
|
|
int status;
|
|
|
|
/* Zero handle first to allow comparisons */
|
|
memset(fh, 0, sizeof(*fh));
|
|
|
|
status = decode_op_hdr(xdr, OP_GETFH);
|
|
if (status)
|
|
return status;
|
|
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
len = be32_to_cpup(p);
|
|
if (len > NFS4_FHSIZE)
|
|
return -EIO;
|
|
fh->size = len;
|
|
p = xdr_inline_decode(xdr, len);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
memcpy(fh->data, p, len);
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
|
|
{
|
|
int status;
|
|
|
|
status = decode_op_hdr(xdr, OP_LINK);
|
|
if (status)
|
|
return status;
|
|
return decode_change_info(xdr, cinfo);
|
|
}
|
|
|
|
/*
|
|
* We create the owner, so we know a proper owner.id length is 4.
|
|
*/
|
|
static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
|
|
{
|
|
uint64_t offset, length, clientid;
|
|
__be32 *p;
|
|
uint32_t namelen, type;
|
|
|
|
p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
|
|
p = xdr_decode_hyper(p, &length);
|
|
type = be32_to_cpup(p++); /* 4 byte read */
|
|
if (fl != NULL) { /* manipulate file lock */
|
|
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;
|
|
}
|
|
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 */
|
|
if (likely(p))
|
|
return -NFS4ERR_DENIED;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
|
|
{
|
|
int status;
|
|
|
|
status = decode_op_hdr(xdr, OP_LOCK);
|
|
if (status == -EIO)
|
|
goto out;
|
|
if (status == 0) {
|
|
status = decode_stateid(xdr, &res->stateid);
|
|
if (unlikely(status))
|
|
goto out;
|
|
} else if (status == -NFS4ERR_DENIED)
|
|
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:
|
|
return status;
|
|
}
|
|
|
|
static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
|
|
{
|
|
int status;
|
|
status = decode_op_hdr(xdr, OP_LOCKT);
|
|
if (status == -NFS4ERR_DENIED)
|
|
return decode_lock_denied(xdr, res->denied);
|
|
return status;
|
|
}
|
|
|
|
static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
|
|
{
|
|
int status;
|
|
|
|
status = decode_op_hdr(xdr, OP_LOCKU);
|
|
if (status != -EIO)
|
|
nfs_increment_lock_seqid(status, res->seqid);
|
|
if (status == 0)
|
|
status = decode_stateid(xdr, &res->stateid);
|
|
return status;
|
|
}
|
|
|
|
static int decode_release_lockowner(struct xdr_stream *xdr)
|
|
{
|
|
return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
|
|
}
|
|
|
|
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)
|
|
{
|
|
__be32 *p;
|
|
uint32_t limit_type, nblocks, blocksize;
|
|
|
|
p = xdr_inline_decode(xdr, 12);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
limit_type = be32_to_cpup(p++);
|
|
switch (limit_type) {
|
|
case 1:
|
|
xdr_decode_hyper(p, maxsize);
|
|
break;
|
|
case 2:
|
|
nblocks = be32_to_cpup(p++);
|
|
blocksize = be32_to_cpup(p);
|
|
*maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
|
|
}
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
|
|
{
|
|
__be32 *p;
|
|
uint32_t delegation_type;
|
|
int status;
|
|
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
delegation_type = be32_to_cpup(p);
|
|
if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
|
|
res->delegation_type = 0;
|
|
return 0;
|
|
}
|
|
status = decode_stateid(xdr, &res->delegation);
|
|
if (unlikely(status))
|
|
return status;
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
res->do_recall = be32_to_cpup(p);
|
|
|
|
switch (delegation_type) {
|
|
case NFS4_OPEN_DELEGATE_READ:
|
|
res->delegation_type = FMODE_READ;
|
|
break;
|
|
case NFS4_OPEN_DELEGATE_WRITE:
|
|
res->delegation_type = FMODE_WRITE|FMODE_READ;
|
|
if (decode_space_limit(xdr, &res->maxsize) < 0)
|
|
return -EIO;
|
|
}
|
|
return decode_ace(xdr, NULL, res->server->nfs_client);
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
|
|
{
|
|
__be32 *p;
|
|
uint32_t savewords, bmlen, i;
|
|
int status;
|
|
|
|
status = decode_op_hdr(xdr, OP_OPEN);
|
|
if (status != -EIO)
|
|
nfs_increment_open_seqid(status, res->seqid);
|
|
if (!status)
|
|
status = decode_stateid(xdr, &res->stateid);
|
|
if (unlikely(status))
|
|
return status;
|
|
|
|
decode_change_info(xdr, &res->cinfo);
|
|
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
res->rflags = be32_to_cpup(p++);
|
|
bmlen = be32_to_cpup(p);
|
|
if (bmlen > 10)
|
|
goto xdr_error;
|
|
|
|
p = xdr_inline_decode(xdr, bmlen << 2);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
|
|
for (i = 0; i < savewords; ++i)
|
|
res->attrset[i] = be32_to_cpup(p++);
|
|
for (; i < NFS4_BITMAP_SIZE; i++)
|
|
res->attrset[i] = 0;
|
|
|
|
return decode_delegation(xdr, res);
|
|
xdr_error:
|
|
dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
|
|
return -EIO;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
|
|
{
|
|
int status;
|
|
|
|
status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
|
|
if (status != -EIO)
|
|
nfs_increment_open_seqid(status, res->seqid);
|
|
if (!status)
|
|
status = decode_stateid(xdr, &res->stateid);
|
|
return status;
|
|
}
|
|
|
|
static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
|
|
{
|
|
int status;
|
|
|
|
status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
|
|
if (status != -EIO)
|
|
nfs_increment_open_seqid(status, res->seqid);
|
|
if (!status)
|
|
status = decode_stateid(xdr, &res->stateid);
|
|
return status;
|
|
}
|
|
|
|
static int decode_putfh(struct xdr_stream *xdr)
|
|
{
|
|
return decode_op_hdr(xdr, OP_PUTFH);
|
|
}
|
|
|
|
static int decode_putrootfh(struct xdr_stream *xdr)
|
|
{
|
|
return decode_op_hdr(xdr, OP_PUTROOTFH);
|
|
}
|
|
|
|
static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
|
|
{
|
|
struct kvec *iov = req->rq_rcv_buf.head;
|
|
__be32 *p;
|
|
uint32_t count, eof, recvd, hdrlen;
|
|
int status;
|
|
|
|
status = decode_op_hdr(xdr, OP_READ);
|
|
if (status)
|
|
return status;
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
eof = be32_to_cpup(p++);
|
|
count = be32_to_cpup(p);
|
|
hdrlen = (u8 *) p - (u8 *) iov->iov_base;
|
|
recvd = req->rq_rcv_buf.len - hdrlen;
|
|
if (count > recvd) {
|
|
dprintk("NFS: server cheating in read reply: "
|
|
"count %u > recvd %u\n", count, recvd);
|
|
count = recvd;
|
|
eof = 0;
|
|
}
|
|
xdr_read_pages(xdr, count);
|
|
res->eof = eof;
|
|
res->count = count;
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
|
|
{
|
|
struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
|
|
struct kvec *iov = rcvbuf->head;
|
|
size_t hdrlen;
|
|
u32 recvd, pglen = rcvbuf->page_len;
|
|
int status;
|
|
|
|
status = decode_op_hdr(xdr, OP_READDIR);
|
|
if (!status)
|
|
status = decode_verifier(xdr, readdir->verifier.data);
|
|
if (unlikely(status))
|
|
return status;
|
|
dprintk("%s: verifier = %08x:%08x\n",
|
|
__func__,
|
|
((u32 *)readdir->verifier.data)[0],
|
|
((u32 *)readdir->verifier.data)[1]);
|
|
|
|
|
|
hdrlen = (char *) xdr->p - (char *) iov->iov_base;
|
|
recvd = rcvbuf->len - hdrlen;
|
|
if (pglen > recvd)
|
|
pglen = recvd;
|
|
xdr_read_pages(xdr, pglen);
|
|
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
|
|
{
|
|
struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
|
|
struct kvec *iov = rcvbuf->head;
|
|
size_t hdrlen;
|
|
u32 len, recvd;
|
|
__be32 *p;
|
|
int status;
|
|
|
|
status = decode_op_hdr(xdr, OP_READLINK);
|
|
if (status)
|
|
return status;
|
|
|
|
/* Convert length of symlink */
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
len = be32_to_cpup(p);
|
|
if (len >= rcvbuf->page_len || len <= 0) {
|
|
dprintk("nfs: server returned giant symlink!\n");
|
|
return -ENAMETOOLONG;
|
|
}
|
|
hdrlen = (char *) xdr->p - (char *) iov->iov_base;
|
|
recvd = req->rq_rcv_buf.len - hdrlen;
|
|
if (recvd < len) {
|
|
dprintk("NFS: server cheating in readlink reply: "
|
|
"count %u > recvd %u\n", len, recvd);
|
|
return -EIO;
|
|
}
|
|
xdr_read_pages(xdr, len);
|
|
/*
|
|
* The XDR encode routine has set things up so that
|
|
* the link text will be copied directly into the
|
|
* buffer. We just have to do overflow-checking,
|
|
* and and null-terminate the text (the VFS expects
|
|
* null-termination).
|
|
*/
|
|
xdr_terminate_string(rcvbuf, len);
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
static int
|
|
decode_restorefh(struct xdr_stream *xdr)
|
|
{
|
|
return decode_op_hdr(xdr, OP_RESTOREFH);
|
|
}
|
|
|
|
static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
|
|
size_t *acl_len)
|
|
{
|
|
__be32 *savep;
|
|
uint32_t attrlen,
|
|
bitmap[2] = {0};
|
|
struct kvec *iov = req->rq_rcv_buf.head;
|
|
int status;
|
|
|
|
*acl_len = 0;
|
|
if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
|
|
goto out;
|
|
if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
|
|
goto out;
|
|
if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
|
|
goto out;
|
|
|
|
if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
|
|
return -EIO;
|
|
if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
|
|
size_t hdrlen;
|
|
u32 recvd;
|
|
|
|
/* We ignore &savep and don't do consistency checks on
|
|
* the attr length. Let userspace figure it out.... */
|
|
hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
|
|
recvd = req->rq_rcv_buf.len - hdrlen;
|
|
if (attrlen > recvd) {
|
|
dprintk("NFS: server cheating in getattr"
|
|
" acl reply: attrlen %u > recvd %u\n",
|
|
attrlen, recvd);
|
|
return -EINVAL;
|
|
}
|
|
xdr_read_pages(xdr, attrlen);
|
|
*acl_len = attrlen;
|
|
} else
|
|
status = -EOPNOTSUPP;
|
|
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
decode_savefh(struct xdr_stream *xdr)
|
|
{
|
|
return decode_op_hdr(xdr, OP_SAVEFH);
|
|
}
|
|
|
|
static int decode_setattr(struct xdr_stream *xdr)
|
|
{
|
|
__be32 *p;
|
|
uint32_t bmlen;
|
|
int status;
|
|
|
|
status = decode_op_hdr(xdr, OP_SETATTR);
|
|
if (status)
|
|
return status;
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
bmlen = be32_to_cpup(p);
|
|
p = xdr_inline_decode(xdr, bmlen << 2);
|
|
if (likely(p))
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
|
|
{
|
|
__be32 *p;
|
|
uint32_t opnum;
|
|
int32_t nfserr;
|
|
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
opnum = be32_to_cpup(p++);
|
|
if (opnum != OP_SETCLIENTID) {
|
|
dprintk("nfs: decode_setclientid: Server returned operation"
|
|
" %d\n", opnum);
|
|
return -EIO;
|
|
}
|
|
nfserr = be32_to_cpup(p);
|
|
if (nfserr == NFS_OK) {
|
|
p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
p = xdr_decode_hyper(p, &res->clientid);
|
|
memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
|
|
} else if (nfserr == NFSERR_CLID_INUSE) {
|
|
uint32_t len;
|
|
|
|
/* skip netid string */
|
|
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;
|
|
|
|
/* skip uaddr string */
|
|
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;
|
|
return -NFSERR_CLID_INUSE;
|
|
} else
|
|
return nfs4_stat_to_errno(nfserr);
|
|
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_setclientid_confirm(struct xdr_stream *xdr)
|
|
{
|
|
return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
|
|
}
|
|
|
|
static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
|
|
{
|
|
__be32 *p;
|
|
int status;
|
|
|
|
status = decode_op_hdr(xdr, OP_WRITE);
|
|
if (status)
|
|
return status;
|
|
|
|
p = xdr_inline_decode(xdr, 16);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
res->count = be32_to_cpup(p++);
|
|
res->verf->committed = be32_to_cpup(p++);
|
|
memcpy(res->verf->verifier, p, 8);
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_delegreturn(struct xdr_stream *xdr)
|
|
{
|
|
return decode_op_hdr(xdr, OP_DELEGRETURN);
|
|
}
|
|
|
|
#if defined(CONFIG_NFS_V4_1)
|
|
static int decode_exchange_id(struct xdr_stream *xdr,
|
|
struct nfs41_exchange_id_res *res)
|
|
{
|
|
__be32 *p;
|
|
uint32_t dummy;
|
|
char *dummy_str;
|
|
int status;
|
|
struct nfs_client *clp = res->client;
|
|
|
|
status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
|
|
if (status)
|
|
return status;
|
|
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
xdr_decode_hyper(p, &clp->cl_ex_clid);
|
|
p = xdr_inline_decode(xdr, 12);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
clp->cl_seqid = be32_to_cpup(p++);
|
|
clp->cl_exchange_flags = be32_to_cpup(p++);
|
|
|
|
/* We ask for SP4_NONE */
|
|
dummy = be32_to_cpup(p);
|
|
if (dummy != SP4_NONE)
|
|
return -EIO;
|
|
|
|
/* Throw away minor_id */
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
|
|
/* Throw away Major id */
|
|
status = decode_opaque_inline(xdr, &dummy, &dummy_str);
|
|
if (unlikely(status))
|
|
return status;
|
|
|
|
/* Throw away server_scope */
|
|
status = decode_opaque_inline(xdr, &dummy, &dummy_str);
|
|
if (unlikely(status))
|
|
return status;
|
|
|
|
/* Throw away Implementation id array */
|
|
status = decode_opaque_inline(xdr, &dummy, &dummy_str);
|
|
if (unlikely(status))
|
|
return status;
|
|
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_chan_attrs(struct xdr_stream *xdr,
|
|
struct nfs4_channel_attrs *attrs)
|
|
{
|
|
__be32 *p;
|
|
u32 nr_attrs;
|
|
|
|
p = xdr_inline_decode(xdr, 28);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
attrs->headerpadsz = be32_to_cpup(p++);
|
|
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++);
|
|
nr_attrs = be32_to_cpup(p);
|
|
if (unlikely(nr_attrs > 1)) {
|
|
printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n",
|
|
__func__, nr_attrs);
|
|
return -EINVAL;
|
|
}
|
|
if (nr_attrs == 1) {
|
|
p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
}
|
|
return 0;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
|
|
{
|
|
return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
|
|
}
|
|
|
|
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);
|
|
if (!status)
|
|
status = decode_sessionid(xdr, &session->sess_id);
|
|
if (unlikely(status))
|
|
return status;
|
|
|
|
/* seqid, flags */
|
|
p = xdr_inline_decode(xdr, 8);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
clp->cl_seqid = be32_to_cpup(p++);
|
|
session->flags = be32_to_cpup(p);
|
|
|
|
/* Channel attributes */
|
|
status = decode_chan_attrs(xdr, &session->fc_attrs);
|
|
if (!status)
|
|
status = decode_chan_attrs(xdr, &session->bc_attrs);
|
|
return status;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return -EIO;
|
|
}
|
|
|
|
static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
|
|
{
|
|
return decode_op_hdr(xdr, OP_DESTROY_SESSION);
|
|
}
|
|
|
|
static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
|
|
{
|
|
return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
|
|
}
|
|
#endif /* CONFIG_NFS_V4_1 */
|
|
|
|
static int decode_sequence(struct xdr_stream *xdr,
|
|
struct nfs4_sequence_res *res,
|
|
struct rpc_rqst *rqstp)
|
|
{
|
|
#if defined(CONFIG_NFS_V4_1)
|
|
struct nfs4_sessionid id;
|
|
u32 dummy;
|
|
int status;
|
|
__be32 *p;
|
|
|
|
if (!res->sr_session)
|
|
return 0;
|
|
|
|
status = decode_op_hdr(xdr, OP_SEQUENCE);
|
|
if (!status)
|
|
status = decode_sessionid(xdr, &id);
|
|
if (unlikely(status))
|
|
goto out_err;
|
|
|
|
/*
|
|
* If the server returns different values for sessionID, slotID or
|
|
* sequence number, the server is looney tunes.
|
|
*/
|
|
status = -EREMOTEIO;
|
|
|
|
if (memcmp(id.data, res->sr_session->sess_id.data,
|
|
NFS4_MAX_SESSIONID_LEN)) {
|
|
dprintk("%s Invalid session id\n", __func__);
|
|
goto out_err;
|
|
}
|
|
|
|
p = xdr_inline_decode(xdr, 20);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
|
|
/* seqid */
|
|
dummy = be32_to_cpup(p++);
|
|
if (dummy != res->sr_slot->seq_nr) {
|
|
dprintk("%s Invalid sequence number\n", __func__);
|
|
goto out_err;
|
|
}
|
|
/* slot id */
|
|
dummy = be32_to_cpup(p++);
|
|
if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) {
|
|
dprintk("%s Invalid slot id\n", __func__);
|
|
goto out_err;
|
|
}
|
|
/* highest slot id - currently not processed */
|
|
dummy = be32_to_cpup(p++);
|
|
/* target highest slot id - currently not processed */
|
|
dummy = be32_to_cpup(p++);
|
|
/* result flags */
|
|
res->sr_status_flags = be32_to_cpup(p);
|
|
status = 0;
|
|
out_err:
|
|
res->sr_status = status;
|
|
return status;
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
status = -EIO;
|
|
goto out_err;
|
|
#else /* CONFIG_NFS_V4_1 */
|
|
return 0;
|
|
#endif /* CONFIG_NFS_V4_1 */
|
|
}
|
|
|
|
/*
|
|
* END OF "GENERIC" DECODE ROUTINES.
|
|
*/
|
|
|
|
/*
|
|
* Decode OPEN_DOWNGRADE response
|
|
*/
|
|
static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_open_downgrade(&xdr, res);
|
|
if (status != 0)
|
|
goto out;
|
|
decode_getfattr(&xdr, res->fattr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task));
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode ACCESS response
|
|
*/
|
|
static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status != 0)
|
|
goto out;
|
|
status = decode_access(&xdr, res);
|
|
if (status != 0)
|
|
goto out;
|
|
decode_getfattr(&xdr, res->fattr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task));
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode LOOKUP response
|
|
*/
|
|
static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
if ((status = decode_putfh(&xdr)) != 0)
|
|
goto out;
|
|
if ((status = decode_lookup(&xdr)) != 0)
|
|
goto out;
|
|
if ((status = decode_getfh(&xdr, res->fh)) != 0)
|
|
goto out;
|
|
status = decode_getfattr(&xdr, res->fattr, res->server
|
|
,!RPC_IS_ASYNC(rqstp->rq_task));
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode LOOKUP_ROOT response
|
|
*/
|
|
static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
if ((status = decode_putrootfh(&xdr)) != 0)
|
|
goto out;
|
|
if ((status = decode_getfh(&xdr, res->fh)) == 0)
|
|
status = decode_getfattr(&xdr, res->fattr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task));
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode REMOVE response
|
|
*/
|
|
static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_removeres *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
if ((status = decode_putfh(&xdr)) != 0)
|
|
goto out;
|
|
if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
|
|
goto out;
|
|
decode_getfattr(&xdr, res->dir_attr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task));
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode RENAME response
|
|
*/
|
|
static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs_renameres *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
if ((status = decode_putfh(&xdr)) != 0)
|
|
goto out;
|
|
if ((status = decode_savefh(&xdr)) != 0)
|
|
goto out;
|
|
if ((status = decode_putfh(&xdr)) != 0)
|
|
goto out;
|
|
if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
|
|
goto out;
|
|
/* Current FH is target directory */
|
|
if (decode_getfattr(&xdr, res->new_fattr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task)) != 0)
|
|
goto out;
|
|
if ((status = decode_restorefh(&xdr)) != 0)
|
|
goto out;
|
|
decode_getfattr(&xdr, res->old_fattr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task));
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode LINK response
|
|
*/
|
|
static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
if ((status = decode_putfh(&xdr)) != 0)
|
|
goto out;
|
|
if ((status = decode_savefh(&xdr)) != 0)
|
|
goto out;
|
|
if ((status = decode_putfh(&xdr)) != 0)
|
|
goto out;
|
|
if ((status = decode_link(&xdr, &res->cinfo)) != 0)
|
|
goto out;
|
|
/*
|
|
* Note order: OP_LINK leaves the directory as the current
|
|
* filehandle.
|
|
*/
|
|
if (decode_getfattr(&xdr, res->dir_attr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task)) != 0)
|
|
goto out;
|
|
if ((status = decode_restorefh(&xdr)) != 0)
|
|
goto out;
|
|
decode_getfattr(&xdr, res->fattr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task));
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode CREATE response
|
|
*/
|
|
static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
if ((status = decode_putfh(&xdr)) != 0)
|
|
goto out;
|
|
if ((status = decode_savefh(&xdr)) != 0)
|
|
goto out;
|
|
if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
|
|
goto out;
|
|
if ((status = decode_getfh(&xdr, res->fh)) != 0)
|
|
goto out;
|
|
if (decode_getfattr(&xdr, res->fattr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task)) != 0)
|
|
goto out;
|
|
if ((status = decode_restorefh(&xdr)) != 0)
|
|
goto out;
|
|
decode_getfattr(&xdr, res->dir_fattr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task));
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode SYMLINK response
|
|
*/
|
|
static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
|
|
{
|
|
return nfs4_xdr_dec_create(rqstp, p, res);
|
|
}
|
|
|
|
/*
|
|
* Decode GETATTR response
|
|
*/
|
|
static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_getfattr(&xdr, res->fattr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task));
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Encode an SETACL request
|
|
*/
|
|
static int
|
|
nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr = {
|
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
|
|
};
|
|
int status;
|
|
|
|
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
|
|
encode_compound_hdr(&xdr, req, &hdr);
|
|
encode_sequence(&xdr, &args->seq_args, &hdr);
|
|
encode_putfh(&xdr, args->fh, &hdr);
|
|
status = encode_setacl(&xdr, args, &hdr);
|
|
encode_nops(&hdr);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode SETACL response
|
|
*/
|
|
static int
|
|
nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p,
|
|
struct nfs_setaclres *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_setattr(&xdr);
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode GETACL response
|
|
*/
|
|
static int
|
|
nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p,
|
|
struct nfs_getaclres *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_getacl(&xdr, rqstp, &res->acl_len);
|
|
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode CLOSE response
|
|
*/
|
|
static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_close(&xdr, res);
|
|
if (status != 0)
|
|
goto out;
|
|
/*
|
|
* Note: Server may do delete on close for this file
|
|
* in which case the getattr call will fail with
|
|
* an ESTALE error. Shouldn't be a problem,
|
|
* though, since fattr->valid will remain unset.
|
|
*/
|
|
decode_getfattr(&xdr, res->fattr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task));
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode OPEN response
|
|
*/
|
|
static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_savefh(&xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_open(&xdr, res);
|
|
if (status)
|
|
goto out;
|
|
if (decode_getfh(&xdr, &res->fh) != 0)
|
|
goto out;
|
|
if (decode_getfattr(&xdr, res->f_attr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task)) != 0)
|
|
goto out;
|
|
if (decode_restorefh(&xdr) != 0)
|
|
goto out;
|
|
decode_getfattr(&xdr, res->dir_attr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task));
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode OPEN_CONFIRM response
|
|
*/
|
|
static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_open_confirm(&xdr, res);
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode OPEN response
|
|
*/
|
|
static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_open(&xdr, res);
|
|
if (status)
|
|
goto out;
|
|
decode_getfattr(&xdr, res->f_attr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task));
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode SETATTR response
|
|
*/
|
|
static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_setattr(&xdr);
|
|
if (status)
|
|
goto out;
|
|
decode_getfattr(&xdr, res->fattr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task));
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode LOCK response
|
|
*/
|
|
static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_lock(&xdr, res);
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode LOCKT response
|
|
*/
|
|
static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_lockt(&xdr, res);
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode LOCKU response
|
|
*/
|
|
static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_locku(&xdr, res);
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (!status)
|
|
status = decode_release_lockowner(&xdr);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode READLINK response
|
|
*/
|
|
static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p,
|
|
struct nfs4_readlink_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_readlink(&xdr, rqstp);
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode READDIR response
|
|
*/
|
|
static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_readdir(&xdr, rqstp, res);
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode Read response
|
|
*/
|
|
static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_read(&xdr, rqstp, res);
|
|
if (!status)
|
|
status = res->count;
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode WRITE response
|
|
*/
|
|
static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_write(&xdr, res);
|
|
if (status)
|
|
goto out;
|
|
decode_getfattr(&xdr, res->fattr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task));
|
|
if (!status)
|
|
status = res->count;
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode COMMIT response
|
|
*/
|
|
static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_commit(&xdr, res);
|
|
if (status)
|
|
goto out;
|
|
decode_getfattr(&xdr, res->fattr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task));
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode FSINFO response
|
|
*/
|
|
static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p,
|
|
struct nfs4_fsinfo_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (!status)
|
|
status = decode_sequence(&xdr, &res->seq_res, req);
|
|
if (!status)
|
|
status = decode_putfh(&xdr);
|
|
if (!status)
|
|
status = decode_fsinfo(&xdr, res->fsinfo);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode PATHCONF response
|
|
*/
|
|
static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p,
|
|
struct nfs4_pathconf_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (!status)
|
|
status = decode_sequence(&xdr, &res->seq_res, req);
|
|
if (!status)
|
|
status = decode_putfh(&xdr);
|
|
if (!status)
|
|
status = decode_pathconf(&xdr, res->pathconf);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode STATFS response
|
|
*/
|
|
static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p,
|
|
struct nfs4_statfs_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (!status)
|
|
status = decode_sequence(&xdr, &res->seq_res, req);
|
|
if (!status)
|
|
status = decode_putfh(&xdr);
|
|
if (!status)
|
|
status = decode_statfs(&xdr, res->fsstat);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode GETATTR_BITMAP response
|
|
*/
|
|
static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, req);
|
|
if (status)
|
|
goto out;
|
|
if ((status = decode_putfh(&xdr)) != 0)
|
|
goto out;
|
|
status = decode_server_caps(&xdr, res);
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode RENEW response
|
|
*/
|
|
static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (!status)
|
|
status = decode_renew(&xdr);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode SETCLIENTID response
|
|
*/
|
|
static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
|
|
struct nfs4_setclientid_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (!status)
|
|
status = decode_setclientid(&xdr, res);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode SETCLIENTID_CONFIRM response
|
|
*/
|
|
static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (!status)
|
|
status = decode_setclientid_confirm(&xdr);
|
|
if (!status)
|
|
status = decode_putrootfh(&xdr);
|
|
if (!status)
|
|
status = decode_fsinfo(&xdr, fsinfo);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode DELEGRETURN response
|
|
*/
|
|
static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(&xdr);
|
|
if (status != 0)
|
|
goto out;
|
|
status = decode_delegreturn(&xdr);
|
|
if (status != 0)
|
|
goto out;
|
|
decode_getfattr(&xdr, res->fattr, res->server,
|
|
!RPC_IS_ASYNC(rqstp->rq_task));
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode FS_LOCATIONS response
|
|
*/
|
|
static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p,
|
|
struct nfs4_fs_locations_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(&xdr, &res->seq_res, req);
|
|
if (status)
|
|
goto out;
|
|
if ((status = decode_putfh(&xdr)) != 0)
|
|
goto out;
|
|
if ((status = decode_lookup(&xdr)) != 0)
|
|
goto out;
|
|
xdr_enter_page(&xdr, PAGE_SIZE);
|
|
status = decode_getfattr(&xdr, &res->fs_locations->fattr,
|
|
res->fs_locations->server,
|
|
!RPC_IS_ASYNC(req->rq_task));
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
#if defined(CONFIG_NFS_V4_1)
|
|
/*
|
|
* Decode EXCHANGE_ID response
|
|
*/
|
|
static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p,
|
|
void *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (!status)
|
|
status = decode_exchange_id(&xdr, res);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode CREATE_SESSION response
|
|
*/
|
|
static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p,
|
|
struct nfs41_create_session_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (!status)
|
|
status = decode_create_session(&xdr, res);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode DESTROY_SESSION response
|
|
*/
|
|
static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p,
|
|
void *dummy)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (!status)
|
|
status = decode_destroy_session(&xdr, dummy);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode SEQUENCE response
|
|
*/
|
|
static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p,
|
|
struct nfs4_sequence_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (!status)
|
|
status = decode_sequence(&xdr, res, rqstp);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode GET_LEASE_TIME response
|
|
*/
|
|
static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p,
|
|
struct nfs4_get_lease_time_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (!status)
|
|
status = decode_sequence(&xdr, &res->lr_seq_res, rqstp);
|
|
if (!status)
|
|
status = decode_putrootfh(&xdr);
|
|
if (!status)
|
|
status = decode_fsinfo(&xdr, res->lr_fsinfo);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode RECLAIM_COMPLETE response
|
|
*/
|
|
static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, uint32_t *p,
|
|
struct nfs41_reclaim_complete_res *res)
|
|
{
|
|
struct xdr_stream xdr;
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
|
|
status = decode_compound_hdr(&xdr, &hdr);
|
|
if (!status)
|
|
status = decode_sequence(&xdr, &res->seq_res, rqstp);
|
|
if (!status)
|
|
status = decode_reclaim_complete(&xdr, (void *)NULL);
|
|
return status;
|
|
}
|
|
#endif /* CONFIG_NFS_V4_1 */
|
|
|
|
__be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
|
|
struct nfs_server *server, int plus)
|
|
{
|
|
uint32_t bitmap[2] = {0};
|
|
uint32_t len;
|
|
__be32 *p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
if (!ntohl(*p++)) {
|
|
p = xdr_inline_decode(xdr, 4);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
if (!ntohl(*p++))
|
|
return ERR_PTR(-EAGAIN);
|
|
entry->eof = 1;
|
|
return ERR_PTR(-EBADCOOKIE);
|
|
}
|
|
|
|
p = xdr_inline_decode(xdr, 12);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
entry->prev_cookie = entry->cookie;
|
|
p = xdr_decode_hyper(p, &entry->cookie);
|
|
entry->len = ntohl(*p++);
|
|
|
|
p = xdr_inline_decode(xdr, entry->len);
|
|
if (unlikely(!p))
|
|
goto out_overflow;
|
|
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;
|
|
entry->fattr->valid = 0;
|
|
|
|
if (decode_attr_bitmap(xdr, bitmap) < 0)
|
|
goto out_overflow;
|
|
|
|
if (decode_attr_length(xdr, &len, &p) < 0)
|
|
goto out_overflow;
|
|
|
|
if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, server, 1) < 0)
|
|
goto out_overflow;
|
|
if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
|
|
entry->ino = entry->fattr->fileid;
|
|
|
|
if (verify_attr_len(xdr, p, len) < 0)
|
|
goto out_overflow;
|
|
|
|
p = xdr_inline_peek(xdr, 8);
|
|
if (p != NULL)
|
|
entry->eof = !p[0] && p[1];
|
|
else
|
|
entry->eof = 0;
|
|
|
|
return p;
|
|
|
|
out_overflow:
|
|
print_overflow_msg(__func__, xdr);
|
|
return ERR_PTR(-EIO);
|
|
}
|
|
|
|
/*
|
|
* We need to translate between nfs status return values and
|
|
* the local errno values which may not be the same.
|
|
*/
|
|
static struct {
|
|
int stat;
|
|
int errno;
|
|
} nfs_errtbl[] = {
|
|
{ NFS4_OK, 0 },
|
|
{ NFS4ERR_PERM, -EPERM },
|
|
{ NFS4ERR_NOENT, -ENOENT },
|
|
{ NFS4ERR_IO, -errno_NFSERR_IO},
|
|
{ NFS4ERR_NXIO, -ENXIO },
|
|
{ NFS4ERR_ACCESS, -EACCES },
|
|
{ NFS4ERR_EXIST, -EEXIST },
|
|
{ NFS4ERR_XDEV, -EXDEV },
|
|
{ NFS4ERR_NOTDIR, -ENOTDIR },
|
|
{ NFS4ERR_ISDIR, -EISDIR },
|
|
{ NFS4ERR_INVAL, -EINVAL },
|
|
{ NFS4ERR_FBIG, -EFBIG },
|
|
{ NFS4ERR_NOSPC, -ENOSPC },
|
|
{ NFS4ERR_ROFS, -EROFS },
|
|
{ NFS4ERR_MLINK, -EMLINK },
|
|
{ NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
|
|
{ NFS4ERR_NOTEMPTY, -ENOTEMPTY },
|
|
{ NFS4ERR_DQUOT, -EDQUOT },
|
|
{ NFS4ERR_STALE, -ESTALE },
|
|
{ NFS4ERR_BADHANDLE, -EBADHANDLE },
|
|
{ NFS4ERR_BADOWNER, -EINVAL },
|
|
{ NFS4ERR_BADNAME, -EINVAL },
|
|
{ NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
|
|
{ NFS4ERR_NOTSUPP, -ENOTSUPP },
|
|
{ NFS4ERR_TOOSMALL, -ETOOSMALL },
|
|
{ NFS4ERR_SERVERFAULT, -EREMOTEIO },
|
|
{ NFS4ERR_BADTYPE, -EBADTYPE },
|
|
{ NFS4ERR_LOCKED, -EAGAIN },
|
|
{ NFS4ERR_SYMLINK, -ELOOP },
|
|
{ NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
|
|
{ NFS4ERR_DEADLOCK, -EDEADLK },
|
|
{ NFS4ERR_WRONGSEC, -EPERM }, /* FIXME: this needs
|
|
* to be handled by a
|
|
* middle-layer.
|
|
*/
|
|
{ -1, -EIO }
|
|
};
|
|
|
|
/*
|
|
* Convert an NFS error code to a local one.
|
|
* This one is used jointly by NFSv2 and NFSv3.
|
|
*/
|
|
static int
|
|
nfs4_stat_to_errno(int stat)
|
|
{
|
|
int i;
|
|
for (i = 0; nfs_errtbl[i].stat != -1; i++) {
|
|
if (nfs_errtbl[i].stat == stat)
|
|
return nfs_errtbl[i].errno;
|
|
}
|
|
if (stat <= 10000 || stat > 10100) {
|
|
/* The server is looney tunes. */
|
|
return -EREMOTEIO;
|
|
}
|
|
/* If we cannot translate the error, the recovery routines should
|
|
* handle it.
|
|
* Note: remaining NFSv4 error codes have values > 10000, so should
|
|
* not conflict with native Linux error codes.
|
|
*/
|
|
return -stat;
|
|
}
|
|
|
|
#define PROC(proc, argtype, restype) \
|
|
[NFSPROC4_CLNT_##proc] = { \
|
|
.p_proc = NFSPROC4_COMPOUND, \
|
|
.p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
|
|
.p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
|
|
.p_arglen = NFS4_##argtype##_sz, \
|
|
.p_replen = NFS4_##restype##_sz, \
|
|
.p_statidx = NFSPROC4_CLNT_##proc, \
|
|
.p_name = #proc, \
|
|
}
|
|
|
|
struct rpc_procinfo nfs4_procedures[] = {
|
|
PROC(READ, enc_read, dec_read),
|
|
PROC(WRITE, enc_write, dec_write),
|
|
PROC(COMMIT, enc_commit, dec_commit),
|
|
PROC(OPEN, enc_open, dec_open),
|
|
PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
|
|
PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
|
|
PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
|
|
PROC(CLOSE, enc_close, dec_close),
|
|
PROC(SETATTR, enc_setattr, dec_setattr),
|
|
PROC(FSINFO, enc_fsinfo, dec_fsinfo),
|
|
PROC(RENEW, enc_renew, dec_renew),
|
|
PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
|
|
PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
|
|
PROC(LOCK, enc_lock, dec_lock),
|
|
PROC(LOCKT, enc_lockt, dec_lockt),
|
|
PROC(LOCKU, enc_locku, dec_locku),
|
|
PROC(ACCESS, enc_access, dec_access),
|
|
PROC(GETATTR, enc_getattr, dec_getattr),
|
|
PROC(LOOKUP, enc_lookup, dec_lookup),
|
|
PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
|
|
PROC(REMOVE, enc_remove, dec_remove),
|
|
PROC(RENAME, enc_rename, dec_rename),
|
|
PROC(LINK, enc_link, dec_link),
|
|
PROC(SYMLINK, enc_symlink, dec_symlink),
|
|
PROC(CREATE, enc_create, dec_create),
|
|
PROC(PATHCONF, enc_pathconf, dec_pathconf),
|
|
PROC(STATFS, enc_statfs, dec_statfs),
|
|
PROC(READLINK, enc_readlink, dec_readlink),
|
|
PROC(READDIR, enc_readdir, dec_readdir),
|
|
PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
|
|
PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
|
|
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),
|
|
#if defined(CONFIG_NFS_V4_1)
|
|
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),
|
|
#endif /* CONFIG_NFS_V4_1 */
|
|
};
|
|
|
|
struct rpc_version nfs_version4 = {
|
|
.number = 4,
|
|
.nrprocs = ARRAY_SIZE(nfs4_procedures),
|
|
.procs = nfs4_procedures
|
|
};
|
|
|
|
/*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* End:
|
|
*/
|