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linux_dsm_epyc7002/fs/nfs/nfs4xdr.c
Trond Myklebust 93b717fd81 NFSv4: Label stateids with the type 
In order to more easily distinguish what kind of stateid we are dealing
with, introduce a type that can be used to label the stateid structure.

The label will be useful both for debugging, but also when dealing with
operations like SETATTR, READ and WRITE that can take several different
types of stateid as arguments.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-05-17 15:48:06 -04:00

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/*
* fs/nfs/nfs4xdr.c
*
* Client-side XDR for NFSv4.
*
* Copyright (c) 2002 The Regents of the University of Michigan.
* All rights reserved.
*
* Kendrick Smith <kmsmith@umich.edu>
* Andy Adamson <andros@umich.edu>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/param.h>
#include <linux/time.h>
#include <linux/mm.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/in.h>
#include <linux/pagemap.h>
#include <linux/proc_fs.h>
#include <linux/kdev_t.h>
#include <linux/module.h>
#include <linux/utsname.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/msg_prot.h>
#include <linux/sunrpc/gss_api.h>
#include <linux/nfs.h>
#include <linux/nfs4.h>
#include <linux/nfs_fs.h>
#include "nfs4_fs.h"
#include "internal.h"
#include "nfs4idmap.h"
#include "nfs4session.h"
#include "pnfs.h"
#include "netns.h"
#define NFSDBG_FACILITY NFSDBG_XDR
/* Mapping from NFS error code to "errno" error code. */
#define errno_NFSERR_IO EIO
static int nfs4_stat_to_errno(int);
/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
#ifdef DEBUG
#define NFS4_MAXTAGLEN 20
#else
#define NFS4_MAXTAGLEN 0
#endif
/* lock,open owner id:
* we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
*/
#define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2)
#define lock_owner_id_maxsz (1 + 1 + 4)
#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
#define op_encode_hdr_maxsz (1)
#define op_decode_hdr_maxsz (2)
#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
(NFS4_FHSIZE >> 2))
#define decode_putfh_maxsz (op_decode_hdr_maxsz)
#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
#define encode_getfh_maxsz (op_encode_hdr_maxsz)
#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
((3+NFS4_FHSIZE) >> 2))
#define nfs4_fattr_bitmap_maxsz 4
#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
#ifdef CONFIG_NFS_V4_SECURITY_LABEL
/* PI(4 bytes) + LFS(4 bytes) + 1(for null terminator?) + MAXLABELLEN */
#define nfs4_label_maxsz (4 + 4 + 1 + XDR_QUADLEN(NFS4_MAXLABELLEN))
#else
#define nfs4_label_maxsz 0
#endif
/* We support only one layout type per file system */
#define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8)
/* This is based on getfattr, which uses the most attributes: */
#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
3 + 3 + 3 + nfs4_owner_maxsz + \
nfs4_group_maxsz + nfs4_label_maxsz + \
decode_mdsthreshold_maxsz))
#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
nfs4_fattr_value_maxsz)
#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
1 + 2 + 1 + \
nfs4_owner_maxsz + \
nfs4_group_maxsz + \
nfs4_label_maxsz + \
4 + 4)
#define encode_savefh_maxsz (op_encode_hdr_maxsz)
#define decode_savefh_maxsz (op_decode_hdr_maxsz)
#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
#define encode_fsinfo_maxsz (encode_getattr_maxsz)
/* The 5 accounts for the PNFS attributes, and assumes that at most three
* layout types will be returned.
*/
#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
#define decode_renew_maxsz (op_decode_hdr_maxsz)
#define encode_setclientid_maxsz \
(op_encode_hdr_maxsz + \
XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
/* client name */ \
1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
1 /* sc_prog */ + \
1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
1) /* sc_cb_ident */
#define decode_setclientid_maxsz \
(op_decode_hdr_maxsz + \
2 /* clientid */ + \
XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
#define encode_setclientid_confirm_maxsz \
(op_encode_hdr_maxsz + \
3 + (NFS4_VERIFIER_SIZE >> 2))
#define decode_setclientid_confirm_maxsz \
(op_decode_hdr_maxsz)
#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
#define decode_lookup_maxsz (op_decode_hdr_maxsz)
#define encode_share_access_maxsz \
(2)
#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
#define encode_open_maxsz (op_encode_hdr_maxsz + \
2 + encode_share_access_maxsz + 2 + \
open_owner_id_maxsz + \
encode_opentype_maxsz + \
encode_claim_null_maxsz)
#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
decode_ace_maxsz)
#define decode_change_info_maxsz (5)
#define decode_open_maxsz (op_decode_hdr_maxsz + \
decode_stateid_maxsz + \
decode_change_info_maxsz + 1 + \
nfs4_fattr_bitmap_maxsz + \
decode_delegation_maxsz)
#define encode_open_confirm_maxsz \
(op_encode_hdr_maxsz + \
encode_stateid_maxsz + 1)
#define decode_open_confirm_maxsz \
(op_decode_hdr_maxsz + \
decode_stateid_maxsz)
#define encode_open_downgrade_maxsz \
(op_encode_hdr_maxsz + \
encode_stateid_maxsz + 1 + \
encode_share_access_maxsz)
#define decode_open_downgrade_maxsz \
(op_decode_hdr_maxsz + \
decode_stateid_maxsz)
#define encode_close_maxsz (op_encode_hdr_maxsz + \
1 + encode_stateid_maxsz)
#define decode_close_maxsz (op_decode_hdr_maxsz + \
decode_stateid_maxsz)
#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
encode_stateid_maxsz + \
encode_attrs_maxsz)
#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
nfs4_fattr_bitmap_maxsz)
#define encode_read_maxsz (op_encode_hdr_maxsz + \
encode_stateid_maxsz + 3)
#define decode_read_maxsz (op_decode_hdr_maxsz + 2)
#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
2 + encode_verifier_maxsz + 5 + \
nfs4_label_maxsz)
#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
decode_verifier_maxsz)
#define encode_readlink_maxsz (op_encode_hdr_maxsz)
#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
#define encode_write_maxsz (op_encode_hdr_maxsz + \
encode_stateid_maxsz + 4)
#define decode_write_maxsz (op_decode_hdr_maxsz + \
2 + decode_verifier_maxsz)
#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
#define decode_commit_maxsz (op_decode_hdr_maxsz + \
decode_verifier_maxsz)
#define encode_remove_maxsz (op_encode_hdr_maxsz + \
nfs4_name_maxsz)
#define decode_remove_maxsz (op_decode_hdr_maxsz + \
decode_change_info_maxsz)
#define encode_rename_maxsz (op_encode_hdr_maxsz + \
2 * nfs4_name_maxsz)
#define decode_rename_maxsz (op_decode_hdr_maxsz + \
decode_change_info_maxsz + \
decode_change_info_maxsz)
#define encode_link_maxsz (op_encode_hdr_maxsz + \
nfs4_name_maxsz)
#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
#define encode_lockowner_maxsz (7)
#define encode_lock_maxsz (op_encode_hdr_maxsz + \
7 + \
1 + encode_stateid_maxsz + 1 + \
encode_lockowner_maxsz)
#define decode_lock_denied_maxsz \
(8 + decode_lockowner_maxsz)
#define decode_lock_maxsz (op_decode_hdr_maxsz + \
decode_lock_denied_maxsz)
#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
encode_lockowner_maxsz)
#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
decode_lock_denied_maxsz)
#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
encode_stateid_maxsz + \
4)
#define decode_locku_maxsz (op_decode_hdr_maxsz + \
decode_stateid_maxsz)
#define encode_release_lockowner_maxsz \
(op_encode_hdr_maxsz + \
encode_lockowner_maxsz)
#define decode_release_lockowner_maxsz \
(op_decode_hdr_maxsz)
#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
1 + nfs4_name_maxsz + \
1 + \
nfs4_fattr_maxsz)
#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
#define encode_create_maxsz (op_encode_hdr_maxsz + \
1 + 2 + nfs4_name_maxsz + \
encode_attrs_maxsz)
#define decode_create_maxsz (op_decode_hdr_maxsz + \
decode_change_info_maxsz + \
nfs4_fattr_bitmap_maxsz)
#define encode_statfs_maxsz (encode_getattr_maxsz)
#define decode_statfs_maxsz (decode_getattr_maxsz)
#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
#define encode_getacl_maxsz (encode_getattr_maxsz)
#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
nfs4_fattr_bitmap_maxsz + 1)
#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
encode_stateid_maxsz + 3)
#define decode_setacl_maxsz (decode_setattr_maxsz)
#define encode_fs_locations_maxsz \
(encode_getattr_maxsz)
#define decode_fs_locations_maxsz \
(0)
#define encode_secinfo_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
#define decode_secinfo_maxsz (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
#if defined(CONFIG_NFS_V4_1)
#define NFS4_MAX_MACHINE_NAME_LEN (64)
#define IMPL_NAME_LIMIT (sizeof(utsname()->sysname) + sizeof(utsname()->release) + \
sizeof(utsname()->version) + sizeof(utsname()->machine) + 8)
#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
encode_verifier_maxsz + \
1 /* co_ownerid.len */ + \
/* eia_clientowner */ \
1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
1 /* flags */ + \
1 /* spa_how */ + \
/* max is SP4_MACH_CRED (for now) */ + \
1 + NFS4_OP_MAP_NUM_WORDS + \
1 + NFS4_OP_MAP_NUM_WORDS + \
1 /* implementation id array of size 1 */ + \
1 /* nii_domain */ + \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
1 /* nii_name */ + \
XDR_QUADLEN(IMPL_NAME_LIMIT) + \
3 /* nii_date */)
#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
2 /* eir_clientid */ + \
1 /* eir_sequenceid */ + \
1 /* eir_flags */ + \
1 /* spr_how */ + \
/* max is SP4_MACH_CRED (for now) */ + \
1 + NFS4_OP_MAP_NUM_WORDS + \
1 + NFS4_OP_MAP_NUM_WORDS + \
2 /* eir_server_owner.so_minor_id */ + \
/* eir_server_owner.so_major_id<> */ \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
/* eir_server_scope<> */ \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
1 /* eir_server_impl_id array length */ + \
1 /* nii_domain */ + \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
1 /* nii_name */ + \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
3 /* nii_date */)
#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
#define decode_channel_attrs_maxsz (6 + \
1 /* ca_rdma_ird.len */ + \
1 /* ca_rdma_ird */)
#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
2 /* csa_clientid */ + \
1 /* csa_sequence */ + \
1 /* csa_flags */ + \
encode_channel_attrs_maxsz + \
encode_channel_attrs_maxsz + \
1 /* csa_cb_program */ + \
1 /* csa_sec_parms.len (1) */ + \
1 /* cb_secflavor (AUTH_SYS) */ + \
1 /* stamp */ + \
1 /* machinename.len */ + \
XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
1 /* uid */ + \
1 /* gid */ + \
1 /* gids.len (0) */)
#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
1 /* csr_sequence */ + \
1 /* csr_flags */ + \
decode_channel_attrs_maxsz + \
decode_channel_attrs_maxsz)
#define encode_bind_conn_to_session_maxsz (op_encode_hdr_maxsz + \
/* bctsa_sessid */ \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
1 /* bctsa_dir */ + \
1 /* bctsa_use_conn_in_rdma_mode */)
#define decode_bind_conn_to_session_maxsz (op_decode_hdr_maxsz + \
/* bctsr_sessid */ \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
1 /* bctsr_dir */ + \
1 /* bctsr_use_conn_in_rdma_mode */)
#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
#define encode_destroy_clientid_maxsz (op_encode_hdr_maxsz + 2)
#define decode_destroy_clientid_maxsz (op_decode_hdr_maxsz)
#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \
XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \
1 /* layout type */ + \
1 /* maxcount */ + \
1 /* bitmap size */ + \
1 /* notification bitmap length */ + \
1 /* notification bitmap, word 0 */)
#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
1 /* layout type */ + \
1 /* opaque devaddr4 length */ + \
/* devaddr4 payload is read into page */ \
1 /* notification bitmap length */ + \
1 /* notification bitmap, word 0 */)
#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
encode_stateid_maxsz)
#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
decode_stateid_maxsz + \
XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
#define encode_layoutcommit_maxsz (op_encode_hdr_maxsz + \
2 /* offset */ + \
2 /* length */ + \
1 /* reclaim */ + \
encode_stateid_maxsz + \
1 /* new offset (true) */ + \
2 /* last byte written */ + \
1 /* nt_timechanged (false) */ + \
1 /* layoutupdate4 layout type */ + \
1 /* layoutupdate4 opaqueue len */)
/* the actual content of layoutupdate4 should
be allocated by drivers and spliced in
using xdr_write_pages */
#define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3)
#define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \
encode_stateid_maxsz + \
1 + \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT))
#define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
1 + decode_stateid_maxsz)
#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
#define encode_test_stateid_maxsz (op_encode_hdr_maxsz + 2 + \
XDR_QUADLEN(NFS4_STATEID_SIZE))
#define decode_test_stateid_maxsz (op_decode_hdr_maxsz + 2 + 1)
#define encode_free_stateid_maxsz (op_encode_hdr_maxsz + 1 + \
XDR_QUADLEN(NFS4_STATEID_SIZE))
#define decode_free_stateid_maxsz (op_decode_hdr_maxsz)
#else /* CONFIG_NFS_V4_1 */
#define encode_sequence_maxsz 0
#define decode_sequence_maxsz 0
#endif /* CONFIG_NFS_V4_1 */
#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_read_maxsz)
#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_read_maxsz)
#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_readlink_maxsz)
#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_readlink_maxsz)
#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_readdir_maxsz)
#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_readdir_maxsz)
#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_write_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_write_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_commit_maxsz)
#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_commit_maxsz)
#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_open_maxsz + \
encode_access_maxsz + \
encode_getfh_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_open_maxsz + \
decode_access_maxsz + \
decode_getfh_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_open_confirm_sz \
(compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_open_confirm_maxsz)
#define NFS4_dec_open_confirm_sz \
(compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_open_confirm_maxsz)
#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_open_maxsz + \
encode_access_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_open_maxsz + \
decode_access_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)
#define NFS4_dec_setclientid_confirm_sz \
(compound_decode_hdr_maxsz + \
decode_setclientid_confirm_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 + \
encode_renew_maxsz)
#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_getattr_maxsz + \
decode_renew_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)
#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_remove_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)
#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_savefh_maxsz + \
decode_putfh_maxsz + \
decode_rename_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 + \
encode_restorefh_maxsz + \
encode_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_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_create_maxsz + \
encode_getfh_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_create_maxsz + \
decode_getfh_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 + \
encode_renew_maxsz)
#define NFS4_dec_fs_locations_sz \
(compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_lookup_maxsz + \
decode_fs_locations_maxsz + \
decode_renew_maxsz)
#define NFS4_enc_secinfo_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_secinfo_maxsz)
#define NFS4_dec_secinfo_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_secinfo_maxsz)
#define NFS4_enc_fsid_present_sz \
(compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_getfh_maxsz + \
encode_renew_maxsz)
#define NFS4_dec_fsid_present_sz \
(compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_getfh_maxsz + \
decode_renew_maxsz)
#if defined(CONFIG_NFS_V4_1)
#define NFS4_enc_bind_conn_to_session_sz \
(compound_encode_hdr_maxsz + \
encode_bind_conn_to_session_maxsz)
#define NFS4_dec_bind_conn_to_session_sz \
(compound_decode_hdr_maxsz + \
decode_bind_conn_to_session_maxsz)
#define NFS4_enc_exchange_id_sz \
(compound_encode_hdr_maxsz + \
encode_exchange_id_maxsz)
#define NFS4_dec_exchange_id_sz \
(compound_decode_hdr_maxsz + \
decode_exchange_id_maxsz)
#define NFS4_enc_create_session_sz \
(compound_encode_hdr_maxsz + \
encode_create_session_maxsz)
#define NFS4_dec_create_session_sz \
(compound_decode_hdr_maxsz + \
decode_create_session_maxsz)
#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
encode_destroy_session_maxsz)
#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
decode_destroy_session_maxsz)
#define NFS4_enc_destroy_clientid_sz (compound_encode_hdr_maxsz + \
encode_destroy_clientid_maxsz)
#define NFS4_dec_destroy_clientid_sz (compound_decode_hdr_maxsz + \
decode_destroy_clientid_maxsz)
#define NFS4_enc_sequence_sz \
(compound_decode_hdr_maxsz + \
encode_sequence_maxsz)
#define NFS4_dec_sequence_sz \
(compound_decode_hdr_maxsz + \
decode_sequence_maxsz)
#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putrootfh_maxsz + \
encode_fsinfo_maxsz)
#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putrootfh_maxsz + \
decode_fsinfo_maxsz)
#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_reclaim_complete_maxsz)
#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_reclaim_complete_maxsz)
#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz +\
encode_getdeviceinfo_maxsz)
#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_getdeviceinfo_maxsz)
#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_layoutget_maxsz)
#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_layoutget_maxsz)
#define NFS4_enc_layoutcommit_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz +\
encode_putfh_maxsz + \
encode_layoutcommit_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_layoutcommit_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_layoutcommit_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_layoutreturn_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_layoutreturn_maxsz)
#define NFS4_dec_layoutreturn_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_layoutreturn_maxsz)
#define NFS4_enc_secinfo_no_name_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putrootfh_maxsz +\
encode_secinfo_no_name_maxsz)
#define NFS4_dec_secinfo_no_name_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putrootfh_maxsz + \
decode_secinfo_no_name_maxsz)
#define NFS4_enc_test_stateid_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_test_stateid_maxsz)
#define NFS4_dec_test_stateid_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_test_stateid_maxsz)
#define NFS4_enc_free_stateid_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_free_stateid_maxsz)
#define NFS4_dec_free_stateid_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_free_stateid_maxsz)
const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
compound_encode_hdr_maxsz +
encode_sequence_maxsz +
encode_putfh_maxsz +
encode_getattr_maxsz) *
XDR_UNIT);
const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
compound_decode_hdr_maxsz +
decode_sequence_maxsz +
decode_putfh_maxsz) *
XDR_UNIT);
const u32 nfs41_maxgetdevinfo_overhead = ((RPC_MAX_REPHEADER_WITH_AUTH +
compound_decode_hdr_maxsz +
decode_sequence_maxsz) *
XDR_UNIT);
EXPORT_SYMBOL_GPL(nfs41_maxgetdevinfo_overhead);
#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_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len)
{
__be32 *p;
p = xdr_reserve_space(xdr, len);
xdr_encode_opaque_fixed(p, buf, len);
}
static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
{
__be32 *p;
p = reserve_space(xdr, 4 + len);
xdr_encode_opaque(p, str, len);
}
static void encode_uint32(struct xdr_stream *xdr, u32 n)
{
__be32 *p;
p = reserve_space(xdr, 4);
*p = cpu_to_be32(n);
}
static void encode_uint64(struct xdr_stream *xdr, u64 n)
{
__be32 *p;
p = reserve_space(xdr, 8);
xdr_encode_hyper(p, n);
}
static void encode_nfs4_seqid(struct xdr_stream *xdr,
const struct nfs_seqid *seqid)
{
if (seqid != NULL)
encode_uint32(xdr, seqid->sequence->counter);
else
encode_uint32(xdr, 0);
}
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;
WARN_ON_ONCE(hdr->taglen > NFS4_MAXTAGLEN);
encode_string(xdr, hdr->taglen, hdr->tag);
p = reserve_space(xdr, 8);
*p++ = cpu_to_be32(hdr->minorversion);
hdr->nops_p = p;
*p = cpu_to_be32(hdr->nops);
}
static void encode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 op,
uint32_t replen,
struct compound_hdr *hdr)
{
encode_uint32(xdr, op);
hdr->nops++;
hdr->replen += replen;
}
static void encode_nops(struct compound_hdr *hdr)
{
WARN_ON_ONCE(hdr->nops > NFS4_MAX_OPS);
*hdr->nops_p = htonl(hdr->nops);
}
static void encode_nfs4_stateid(struct xdr_stream *xdr, const nfs4_stateid *stateid)
{
encode_opaque_fixed(xdr, stateid, NFS4_STATEID_SIZE);
}
static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
{
encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE);
}
static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
const struct nfs4_label *label,
const struct nfs_server *server,
bool excl_check)
{
char owner_name[IDMAP_NAMESZ];
char owner_group[IDMAP_NAMESZ];
int owner_namelen = 0;
int owner_grouplen = 0;
__be32 *p;
unsigned i;
uint32_t len = 0;
uint32_t bmval_len;
uint32_t bmval[3] = { 0 };
/*
* We reserve enough space to write the entire attribute buffer at once.
* In the worst-case, this would be
* 16(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
* = 40 bytes, plus any contribution from variable-length fields
* such as owner/group.
*/
if (iap->ia_valid & ATTR_SIZE) {
bmval[0] |= FATTR4_WORD0_SIZE;
len += 8;
}
if (iap->ia_valid & ATTR_MODE) {
bmval[1] |= FATTR4_WORD1_MODE;
len += 4;
}
if (iap->ia_valid & ATTR_UID) {
owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
if (owner_namelen < 0) {
dprintk("nfs: couldn't resolve uid %d to string\n",
from_kuid(&init_user_ns, iap->ia_uid));
/* XXX */
strcpy(owner_name, "nobody");
owner_namelen = sizeof("nobody") - 1;
/* goto out; */
}
bmval[1] |= FATTR4_WORD1_OWNER;
len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
}
if (iap->ia_valid & ATTR_GID) {
owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
if (owner_grouplen < 0) {
dprintk("nfs: couldn't resolve gid %d to string\n",
from_kgid(&init_user_ns, iap->ia_gid));
strcpy(owner_group, "nobody");
owner_grouplen = sizeof("nobody") - 1;
/* goto out; */
}
bmval[1] |= FATTR4_WORD1_OWNER_GROUP;
len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
}
if (iap->ia_valid & ATTR_ATIME_SET) {
bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
len += 16;
} else if (iap->ia_valid & ATTR_ATIME) {
bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
len += 4;
}
if (iap->ia_valid & ATTR_MTIME_SET) {
bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
len += 16;
} else if (iap->ia_valid & ATTR_MTIME) {
bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
len += 4;
}
if (excl_check) {
const u32 *excl_bmval = server->exclcreat_bitmask;
bmval[0] &= excl_bmval[0];
bmval[1] &= excl_bmval[1];
bmval[2] &= excl_bmval[2];
if (!(excl_bmval[2] & FATTR4_WORD2_SECURITY_LABEL))
label = NULL;
}
if (label) {
len += 4 + 4 + 4 + (XDR_QUADLEN(label->len) << 2);
bmval[2] |= FATTR4_WORD2_SECURITY_LABEL;
}
if (bmval[2] != 0)
bmval_len = 3;
else if (bmval[1] != 0)
bmval_len = 2;
else
bmval_len = 1;
p = reserve_space(xdr, 4 + (bmval_len << 2) + 4 + len);
*p++ = cpu_to_be32(bmval_len);
for (i = 0; i < bmval_len; i++)
*p++ = cpu_to_be32(bmval[i]);
*p++ = cpu_to_be32(len);
if (bmval[0] & FATTR4_WORD0_SIZE)
p = xdr_encode_hyper(p, iap->ia_size);
if (bmval[1] & FATTR4_WORD1_MODE)
*p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
if (bmval[1] & FATTR4_WORD1_OWNER)
p = xdr_encode_opaque(p, owner_name, owner_namelen);
if (bmval[1] & FATTR4_WORD1_OWNER_GROUP)
p = xdr_encode_opaque(p, owner_group, owner_grouplen);
if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
if (iap->ia_valid & ATTR_ATIME_SET) {
*p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
p = xdr_encode_hyper(p, (s64)iap->ia_atime.tv_sec);
*p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
} else
*p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
}
if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
if (iap->ia_valid & ATTR_MTIME_SET) {
*p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
p = xdr_encode_hyper(p, (s64)iap->ia_mtime.tv_sec);
*p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
} else
*p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
}
if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) {
*p++ = cpu_to_be32(label->lfs);
*p++ = cpu_to_be32(label->pi);
*p++ = cpu_to_be32(label->len);
p = xdr_encode_opaque_fixed(p, label->label, label->len);
}
/* out: */
}
static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_ACCESS, decode_access_maxsz, hdr);
encode_uint32(xdr, access);
}
static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_CLOSE, decode_close_maxsz, hdr);
encode_nfs4_seqid(xdr, arg->seqid);
encode_nfs4_stateid(xdr, &arg->stateid);
}
static void encode_commit(struct xdr_stream *xdr, const struct nfs_commitargs *args, struct compound_hdr *hdr)
{
__be32 *p;
encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr);
p = reserve_space(xdr, 12);
p = xdr_encode_hyper(p, args->offset);
*p = cpu_to_be32(args->count);
}
static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
{
__be32 *p;
encode_op_hdr(xdr, OP_CREATE, decode_create_maxsz, hdr);
encode_uint32(xdr, 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);
xdr->buf->flags |= XDRBUF_WRITE;
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);
encode_attrs(xdr, create->attrs, create->label, create->server, false);
}
static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
{
__be32 *p;
encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
p = reserve_space(xdr, 8);
*p++ = cpu_to_be32(1);
*p = cpu_to_be32(bitmap);
}
static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
{
__be32 *p;
encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
p = reserve_space(xdr, 12);
*p++ = cpu_to_be32(2);
*p++ = cpu_to_be32(bm0);
*p = cpu_to_be32(bm1);
}
static void
encode_getattr_three(struct xdr_stream *xdr,
uint32_t bm0, uint32_t bm1, uint32_t bm2,
struct compound_hdr *hdr)
{
__be32 *p;
encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr);
if (bm2) {
p = reserve_space(xdr, 16);
*p++ = cpu_to_be32(3);
*p++ = cpu_to_be32(bm0);
*p++ = cpu_to_be32(bm1);
*p = cpu_to_be32(bm2);
} else if (bm1) {
p = reserve_space(xdr, 12);
*p++ = cpu_to_be32(2);
*p++ = cpu_to_be32(bm0);
*p = cpu_to_be32(bm1);
} else {
p = reserve_space(xdr, 8);
*p++ = cpu_to_be32(1);
*p = cpu_to_be32(bm0);
}
}
static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
{
encode_getattr_three(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
bitmask[1] & nfs4_fattr_bitmap[1],
bitmask[2] & nfs4_fattr_bitmap[2],
hdr);
}
static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask,
const u32 *open_bitmap,
struct compound_hdr *hdr)
{
encode_getattr_three(xdr,
bitmask[0] & open_bitmap[0],
bitmask[1] & open_bitmap[1],
bitmask[2] & open_bitmap[2],
hdr);
}
static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
{
encode_getattr_three(xdr,
bitmask[0] & nfs4_fsinfo_bitmap[0],
bitmask[1] & nfs4_fsinfo_bitmap[1],
bitmask[2] & nfs4_fsinfo_bitmap[2],
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)
{
encode_op_hdr(xdr, OP_GETFH, decode_getfh_maxsz, hdr);
}
static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_LINK, decode_link_maxsz, hdr);
encode_string(xdr, name->len, name->name);
}
static inline int nfs4_lock_type(struct file_lock *fl, int block)
{
if (fl->fl_type == 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, 32);
p = xdr_encode_hyper(p, lowner->clientid);
*p++ = cpu_to_be32(20);
p = xdr_encode_opaque_fixed(p, "lock id:", 8);
*p++ = cpu_to_be32(lowner->s_dev);
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;
encode_op_hdr(xdr, OP_LOCK, decode_lock_maxsz, hdr);
p = reserve_space(xdr, 28);
*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){
encode_nfs4_seqid(xdr, args->open_seqid);
encode_nfs4_stateid(xdr, &args->open_stateid);
encode_nfs4_seqid(xdr, args->lock_seqid);
encode_lockowner(xdr, &args->lock_owner);
}
else {
encode_nfs4_stateid(xdr, &args->lock_stateid);
encode_nfs4_seqid(xdr, args->lock_seqid);
}
}
static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
{
__be32 *p;
encode_op_hdr(xdr, OP_LOCKT, decode_lockt_maxsz, hdr);
p = reserve_space(xdr, 20);
*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);
}
static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
{
__be32 *p;
encode_op_hdr(xdr, OP_LOCKU, decode_locku_maxsz, hdr);
encode_uint32(xdr, nfs4_lock_type(args->fl, 0));
encode_nfs4_seqid(xdr, args->seqid);
encode_nfs4_stateid(xdr, &args->stateid);
p = reserve_space(xdr, 16);
p = xdr_encode_hyper(p, args->fl->fl_start);
xdr_encode_hyper(p, nfs4_lock_length(args->fl));
}
static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_RELEASE_LOCKOWNER, decode_release_lockowner_maxsz, hdr);
encode_lockowner(xdr, lowner);
}
static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_LOOKUP, decode_lookup_maxsz, hdr);
encode_string(xdr, name->len, name->name);
}
static void encode_share_access(struct xdr_stream *xdr, u32 share_access)
{
__be32 *p;
p = reserve_space(xdr, 8);
*p++ = cpu_to_be32(share_access);
*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
*/
encode_nfs4_seqid(xdr, arg->seqid);
encode_share_access(xdr, arg->share_access);
p = reserve_space(xdr, 36);
p = xdr_encode_hyper(p, arg->clientid);
*p++ = cpu_to_be32(24);
p = xdr_encode_opaque_fixed(p, "open id:", 8);
*p++ = cpu_to_be32(arg->server->s_dev);
*p++ = cpu_to_be32(arg->id.uniquifier);
xdr_encode_hyper(p, arg->id.create_time);
}
static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
{
__be32 *p;
p = reserve_space(xdr, 4);
switch(arg->createmode) {
case NFS4_CREATE_UNCHECKED:
*p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, false);
break;
case NFS4_CREATE_GUARDED:
*p = cpu_to_be32(NFS4_CREATE_GUARDED);
encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, false);
break;
case NFS4_CREATE_EXCLUSIVE:
*p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
encode_nfs4_verifier(xdr, &arg->u.verifier);
break;
case NFS4_CREATE_EXCLUSIVE4_1:
*p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
encode_nfs4_verifier(xdr, &arg->u.verifier);
encode_attrs(xdr, arg->u.attrs, arg->label, arg->server, true);
}
}
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:
*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);
*p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
encode_nfs4_stateid(xdr, stateid);
encode_string(xdr, name->len, name->name);
}
static inline void encode_claim_fh(struct xdr_stream *xdr)
{
__be32 *p;
p = reserve_space(xdr, 4);
*p = cpu_to_be32(NFS4_OPEN_CLAIM_FH);
}
static inline void encode_claim_delegate_cur_fh(struct xdr_stream *xdr, const nfs4_stateid *stateid)
{
__be32 *p;
p = reserve_space(xdr, 4);
*p = cpu_to_be32(NFS4_OPEN_CLAIM_DELEG_CUR_FH);
encode_nfs4_stateid(xdr, stateid);
}
static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_OPEN, decode_open_maxsz, 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;
case NFS4_OPEN_CLAIM_FH:
encode_claim_fh(xdr);
break;
case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
encode_claim_delegate_cur_fh(xdr, &arg->u.delegation);
break;
default:
BUG();
}
}
static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_OPEN_CONFIRM, decode_open_confirm_maxsz, hdr);
encode_nfs4_stateid(xdr, arg->stateid);
encode_nfs4_seqid(xdr, arg->seqid);
}
static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_OPEN_DOWNGRADE, decode_open_downgrade_maxsz, hdr);
encode_nfs4_stateid(xdr, &arg->stateid);
encode_nfs4_seqid(xdr, arg->seqid);
encode_share_access(xdr, arg->share_access);
}
static void
encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_PUTFH, decode_putfh_maxsz, hdr);
encode_string(xdr, fh->size, fh->data);
}
static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_PUTROOTFH, decode_putrootfh_maxsz, hdr);
}
static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
struct compound_hdr *hdr)
{
__be32 *p;
encode_op_hdr(xdr, OP_READ, decode_read_maxsz, hdr);
encode_nfs4_stateid(xdr, &args->stateid);
p = reserve_space(xdr, 12);
p = xdr_encode_hyper(p, args->offset);
*p = cpu_to_be32(args->count);
}
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[3] = {
FATTR4_WORD0_RDATTR_ERROR,
FATTR4_WORD1_MOUNTED_ON_FILEID,
};
uint32_t dircount = readdir->count >> 1;
__be32 *p, verf[2];
uint32_t attrlen = 0;
unsigned int i;
if (readdir->plus) {
attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE|FATTR4_WORD0_FILEID;
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;
attrs[2] |= FATTR4_WORD2_SECURITY_LABEL;
dircount >>= 1;
}
/* Use mounted_on_fileid only if the server supports it */
if (!(readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID))
attrs[0] |= FATTR4_WORD0_FILEID;
for (i = 0; i < ARRAY_SIZE(attrs); i++) {
attrs[i] &= readdir->bitmask[i];
if (attrs[i] != 0)
attrlen = i+1;
}
encode_op_hdr(xdr, OP_READDIR, decode_readdir_maxsz, hdr);
encode_uint64(xdr, readdir->cookie);
encode_nfs4_verifier(xdr, &readdir->verifier);
p = reserve_space(xdr, 12 + (attrlen << 2));
*p++ = cpu_to_be32(dircount);
*p++ = cpu_to_be32(readdir->count);
*p++ = cpu_to_be32(attrlen);
for (i = 0; i < attrlen; i++)
*p++ = cpu_to_be32(attrs[i]);
memcpy(verf, readdir->verifier.data, sizeof(verf));
dprintk("%s: cookie = %llu, verifier = %08x:%08x, bitmap = %08x:%08x:%08x\n",
__func__,
(unsigned long long)readdir->cookie,
verf[0], verf[1],
attrs[0] & readdir->bitmask[0],
attrs[1] & readdir->bitmask[1],
attrs[2] & readdir->bitmask[2]);
}
static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_READLINK, decode_readlink_maxsz, hdr);
}
static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_REMOVE, decode_remove_maxsz, hdr);
encode_string(xdr, name->len, name->name);
}
static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_RENAME, decode_rename_maxsz, hdr);
encode_string(xdr, oldname->len, oldname->name);
encode_string(xdr, newname->len, newname->name);
}
static void encode_renew(struct xdr_stream *xdr, clientid4 clid,
struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_RENEW, decode_renew_maxsz, hdr);
encode_uint64(xdr, clid);
}
static void
encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_RESTOREFH, decode_restorefh_maxsz, hdr);
}
static void
encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
{
__be32 *p;
encode_op_hdr(xdr, OP_SETATTR, decode_setacl_maxsz, hdr);
encode_nfs4_stateid(xdr, &zero_stateid);
p = reserve_space(xdr, 2*4);
*p++ = cpu_to_be32(1);
*p = cpu_to_be32(FATTR4_WORD0_ACL);
p = reserve_space(xdr, 4);
*p = cpu_to_be32(arg->acl_len);
xdr_write_pages(xdr, arg->acl_pages, 0, arg->acl_len);
}
static void
encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_SAVEFH, decode_savefh_maxsz, hdr);
}
static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_SETATTR, decode_setattr_maxsz, hdr);
encode_nfs4_stateid(xdr, &arg->stateid);
encode_attrs(xdr, arg->iap, arg->label, server, false);
}
static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
{
__be32 *p;
encode_op_hdr(xdr, OP_SETCLIENTID, decode_setclientid_maxsz, hdr);
encode_nfs4_verifier(xdr, setclientid->sc_verifier);
encode_string(xdr, strlen(setclientid->sc_clnt->cl_owner_id),
setclientid->sc_clnt->cl_owner_id);
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_clnt->cl_cb_ident);
}
static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM,
decode_setclientid_confirm_maxsz, hdr);
encode_uint64(xdr, arg->clientid);
encode_nfs4_verifier(xdr, &arg->confirm);
}
static void encode_write(struct xdr_stream *xdr, const struct nfs_pgio_args *args,
struct compound_hdr *hdr)
{
__be32 *p;
encode_op_hdr(xdr, OP_WRITE, decode_write_maxsz, hdr);
encode_nfs4_stateid(xdr, &args->stateid);
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);
}
static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_DELEGRETURN, decode_delegreturn_maxsz, hdr);
encode_nfs4_stateid(xdr, stateid);
}
static void encode_secinfo(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_SECINFO, decode_secinfo_maxsz, hdr);
encode_string(xdr, name->len, name->name);
}
#if defined(CONFIG_NFS_V4_1)
/* NFSv4.1 operations */
static void encode_bind_conn_to_session(struct xdr_stream *xdr,
struct nfs41_bind_conn_to_session_args *args,
struct compound_hdr *hdr)
{
__be32 *p;
encode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION,
decode_bind_conn_to_session_maxsz, hdr);
encode_opaque_fixed(xdr, args->sessionid.data, NFS4_MAX_SESSIONID_LEN);
p = xdr_reserve_space(xdr, 8);
*p++ = cpu_to_be32(args->dir);
*p = (args->use_conn_in_rdma_mode) ? cpu_to_be32(1) : cpu_to_be32(0);
}
static void encode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
{
unsigned int i;
encode_uint32(xdr, NFS4_OP_MAP_NUM_WORDS);
for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++)
encode_uint32(xdr, op_map->u.words[i]);
}
static void encode_exchange_id(struct xdr_stream *xdr,
struct nfs41_exchange_id_args *args,
struct compound_hdr *hdr)
{
__be32 *p;
char impl_name[IMPL_NAME_LIMIT];
int len = 0;
encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr);
encode_nfs4_verifier(xdr, args->verifier);
encode_string(xdr, strlen(args->client->cl_owner_id),
args->client->cl_owner_id);
encode_uint32(xdr, args->flags);
encode_uint32(xdr, args->state_protect.how);
switch (args->state_protect.how) {
case SP4_NONE:
break;
case SP4_MACH_CRED:
encode_op_map(xdr, &args->state_protect.enforce);
encode_op_map(xdr, &args->state_protect.allow);
break;
default:
WARN_ON_ONCE(1);
break;
}
if (send_implementation_id &&
sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) > 1 &&
sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN)
<= sizeof(impl_name) + 1)
len = snprintf(impl_name, sizeof(impl_name), "%s %s %s %s",
utsname()->sysname, utsname()->release,
utsname()->version, utsname()->machine);
if (len > 0) {
encode_uint32(xdr, 1); /* implementation id array length=1 */
encode_string(xdr,
sizeof(CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN) - 1,
CONFIG_NFS_V4_1_IMPLEMENTATION_ID_DOMAIN);
encode_string(xdr, len, impl_name);
/* just send zeros for nii_date - the date is in nii_name */
p = reserve_space(xdr, 12);
p = xdr_encode_hyper(p, 0);
*p = cpu_to_be32(0);
} else
encode_uint32(xdr, 0); /* implementation id array length=0 */
}
static void encode_create_session(struct xdr_stream *xdr,
struct nfs41_create_session_args *args,
struct compound_hdr *hdr)
{
__be32 *p;
struct nfs_client *clp = args->client;
struct rpc_clnt *clnt = clp->cl_rpcclient;
struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
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;
encode_op_hdr(xdr, OP_CREATE_SESSION, decode_create_session_maxsz, hdr);
p = reserve_space(xdr, 16 + 2*28 + 20 + clnt->cl_nodelen + 12);
p = xdr_encode_hyper(p, args->clientid);
*p++ = cpu_to_be32(args->seqid); /*Sequence id */
*p++ = cpu_to_be32(args->flags); /*flags */
/* Fore Channel */
*p++ = cpu_to_be32(0); /* 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(0); /* 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(nn->boot_time.tv_nsec); /* stamp */
p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
*p++ = cpu_to_be32(0); /* UID */
*p++ = cpu_to_be32(0); /* GID */
*p = cpu_to_be32(0); /* No more gids */
}
static void encode_destroy_session(struct xdr_stream *xdr,
struct nfs4_session *session,
struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_DESTROY_SESSION, decode_destroy_session_maxsz, hdr);
encode_opaque_fixed(xdr, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
}
static void encode_destroy_clientid(struct xdr_stream *xdr,
uint64_t clientid,
struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_DESTROY_CLIENTID, decode_destroy_clientid_maxsz, hdr);
encode_uint64(xdr, clientid);
}
static void encode_reclaim_complete(struct xdr_stream *xdr,
struct nfs41_reclaim_complete_args *args,
struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_RECLAIM_COMPLETE, decode_reclaim_complete_maxsz, hdr);
encode_uint32(xdr, args->one_fs);
}
#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;
struct nfs4_slot_table *tp;
struct nfs4_slot *slot = args->sa_slot;
__be32 *p;
tp = slot->table;
session = tp->session;
if (!session)
return;
encode_op_hdr(xdr, OP_SEQUENCE, decode_sequence_maxsz, hdr);
/*
* 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, slot->slot_nr,
tp->highest_used_slotid, args->sa_cache_this);
p = reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 16);
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(slot->slot_nr);
*p++ = cpu_to_be32(tp->highest_used_slotid);
*p = cpu_to_be32(args->sa_cache_this);
#endif /* CONFIG_NFS_V4_1 */
}
#ifdef CONFIG_NFS_V4_1
static void
encode_getdeviceinfo(struct xdr_stream *xdr,
const struct nfs4_getdeviceinfo_args *args,
struct compound_hdr *hdr)
{
__be32 *p;
encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr);
p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4);
p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
NFS4_DEVICEID4_SIZE);
*p++ = cpu_to_be32(args->pdev->layout_type);
*p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */
p = reserve_space(xdr, 4 + 4);
*p++ = cpu_to_be32(1); /* bitmap length */
*p++ = cpu_to_be32(args->notify_types);
}
static void
encode_layoutget(struct xdr_stream *xdr,
const struct nfs4_layoutget_args *args,
struct compound_hdr *hdr)
{
__be32 *p;
encode_op_hdr(xdr, OP_LAYOUTGET, decode_layoutget_maxsz, hdr);
p = reserve_space(xdr, 36);
*p++ = cpu_to_be32(0); /* Signal layout available */
*p++ = cpu_to_be32(args->type);
*p++ = cpu_to_be32(args->range.iomode);
p = xdr_encode_hyper(p, args->range.offset);
p = xdr_encode_hyper(p, args->range.length);
p = xdr_encode_hyper(p, args->minlength);
encode_nfs4_stateid(xdr, &args->stateid);
encode_uint32(xdr, args->maxcount);
dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
__func__,
args->type,
args->range.iomode,
(unsigned long)args->range.offset,
(unsigned long)args->range.length,
args->maxcount);
}
static int
encode_layoutcommit(struct xdr_stream *xdr,
struct inode *inode,
struct nfs4_layoutcommit_args *args,
struct compound_hdr *hdr)
{
__be32 *p;
dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
NFS_SERVER(args->inode)->pnfs_curr_ld->id);
encode_op_hdr(xdr, OP_LAYOUTCOMMIT, decode_layoutcommit_maxsz, hdr);
p = reserve_space(xdr, 20);
/* Only whole file layouts */
p = xdr_encode_hyper(p, 0); /* offset */
p = xdr_encode_hyper(p, args->lastbytewritten + 1); /* length */
*p = cpu_to_be32(0); /* reclaim */
encode_nfs4_stateid(xdr, &args->stateid);
p = reserve_space(xdr, 20);
*p++ = cpu_to_be32(1); /* newoffset = TRUE */
p = xdr_encode_hyper(p, args->lastbytewritten);
*p++ = cpu_to_be32(0); /* Never send time_modify_changed */
*p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit) {
NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
NFS_I(inode)->layout, xdr, args);
} else {
encode_uint32(xdr, args->layoutupdate_len);
if (args->layoutupdate_pages) {
xdr_write_pages(xdr, args->layoutupdate_pages, 0,
args->layoutupdate_len);
}
}
return 0;
}
static void
encode_layoutreturn(struct xdr_stream *xdr,
const struct nfs4_layoutreturn_args *args,
struct compound_hdr *hdr)
{
__be32 *p;
encode_op_hdr(xdr, OP_LAYOUTRETURN, decode_layoutreturn_maxsz, hdr);
p = reserve_space(xdr, 16);
*p++ = cpu_to_be32(0); /* reclaim. always 0 for now */
*p++ = cpu_to_be32(args->layout_type);
*p++ = cpu_to_be32(args->range.iomode);
*p = cpu_to_be32(RETURN_FILE);
p = reserve_space(xdr, 16);
p = xdr_encode_hyper(p, args->range.offset);
p = xdr_encode_hyper(p, args->range.length);
spin_lock(&args->inode->i_lock);
encode_nfs4_stateid(xdr, &args->stateid);
spin_unlock(&args->inode->i_lock);
if (NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn) {
NFS_SERVER(args->inode)->pnfs_curr_ld->encode_layoutreturn(
NFS_I(args->inode)->layout, xdr, args);
} else
encode_uint32(xdr, 0);
}
static int
encode_secinfo_no_name(struct xdr_stream *xdr,
const struct nfs41_secinfo_no_name_args *args,
struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_SECINFO_NO_NAME, decode_secinfo_no_name_maxsz, hdr);
encode_uint32(xdr, args->style);
return 0;
}
static void encode_test_stateid(struct xdr_stream *xdr,
struct nfs41_test_stateid_args *args,
struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_TEST_STATEID, decode_test_stateid_maxsz, hdr);
encode_uint32(xdr, 1);
encode_nfs4_stateid(xdr, args->stateid);
}
static void encode_free_stateid(struct xdr_stream *xdr,
struct nfs41_free_stateid_args *args,
struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_FREE_STATEID, decode_free_stateid_maxsz, hdr);
encode_nfs4_stateid(xdr, &args->stateid);
}
#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)
struct nfs4_session *session = args->sa_slot->table->session;
if (session)
return session->clp->cl_mvops->minor_version;
#endif /* CONFIG_NFS_V4_1 */
return 0;
}
/*
* Encode an ACCESS request
*/
static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
const struct nfs4_accessargs *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_access(xdr, args->access, &hdr);
encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
}
/*
* Encode LOOKUP request
*/
static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
const struct nfs4_lookup_arg *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->dir_fh, &hdr);
encode_lookup(xdr, args->name, &hdr);
encode_getfh(xdr, &hdr);
encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
}
/*
* Encode LOOKUP_ROOT request
*/
static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
struct xdr_stream *xdr,
const struct nfs4_lookup_root_arg *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putrootfh(xdr, &hdr);
encode_getfh(xdr, &hdr);
encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
}
/*
* Encode REMOVE request
*/
static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
const struct nfs_removeargs *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_remove(xdr, &args->name, &hdr);
encode_nops(&hdr);
}
/*
* Encode RENAME request
*/
static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
const struct nfs_renameargs *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->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_nops(&hdr);
}
/*
* Encode LINK request
*/
static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
const struct nfs4_link_arg *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_savefh(xdr, &hdr);
encode_putfh(xdr, args->dir_fh, &hdr);
encode_link(xdr, args->name, &hdr);
encode_restorefh(xdr, &hdr);
encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
}
/*
* Encode CREATE request
*/
static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
const struct nfs4_create_arg *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->dir_fh, &hdr);
encode_create(xdr, args, &hdr);
encode_getfh(xdr, &hdr);
encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
}
/*
* Encode SYMLINK request
*/
static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
const struct nfs4_create_arg *args)
{
nfs4_xdr_enc_create(req, xdr, args);
}
/*
* Encode GETATTR request
*/
static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
const struct nfs4_getattr_arg *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
}
/*
* Encode a CLOSE request
*/
static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs_closeargs *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_close(xdr, args, &hdr);
encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
}
/*
* Encode an OPEN request
*/
static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs_openargs *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_open(xdr, args, &hdr);
encode_getfh(xdr, &hdr);
if (args->access)
encode_access(xdr, args->access, &hdr);
encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
encode_nops(&hdr);
}
/*
* Encode an OPEN_CONFIRM request
*/
static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs_open_confirmargs *args)
{
struct compound_hdr hdr = {
.nops = 0,
};
encode_compound_hdr(xdr, req, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_open_confirm(xdr, args, &hdr);
encode_nops(&hdr);
}
/*
* Encode an OPEN request with no attributes.
*/
static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs_openargs *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_open(xdr, args, &hdr);
if (args->access)
encode_access(xdr, args->access, &hdr);
encode_getfattr_open(xdr, args->bitmask, args->open_bitmap, &hdr);
encode_nops(&hdr);
}
/*
* Encode an OPEN_DOWNGRADE request
*/
static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs_closeargs *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_open_downgrade(xdr, args, &hdr);
encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
}
/*
* Encode a LOCK request
*/
static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs_lock_args *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_lock(xdr, args, &hdr);
encode_nops(&hdr);
}
/*
* Encode a LOCKT request
*/
static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs_lockt_args *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_lockt(xdr, args, &hdr);
encode_nops(&hdr);
}
/*
* Encode a LOCKU request
*/
static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs_locku_args *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_locku(xdr, args, &hdr);
encode_nops(&hdr);
}
static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs_release_lockowner_args *args)
{
struct compound_hdr hdr = {
.minorversion = 0,
};
encode_compound_hdr(xdr, req, &hdr);
encode_release_lockowner(xdr, &args->lock_owner, &hdr);
encode_nops(&hdr);
}
/*
* Encode a READLINK request
*/
static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
const struct nfs4_readlink *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_readlink(xdr, args, req, &hdr);
xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
args->pgbase, args->pglen);
encode_nops(&hdr);
}
/*
* Encode a READDIR request
*/
static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
const struct nfs4_readdir_arg *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_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);
}
/*
* Encode a READ request
*/
static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs_pgio_args *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, 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);
}
/*
* Encode an SETATTR request
*/
static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs_setattrargs *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_setattr(xdr, args, args->server, &hdr);
encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
}
/*
* Encode a GETACL request
*/
static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs_getaclargs *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
uint32_t replen;
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 + 1;
encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
args->acl_pages, 0, args->acl_len);
encode_nops(&hdr);
}
/*
* Encode a WRITE request
*/
static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs_pgio_args *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_write(xdr, args, &hdr);
req->rq_snd_buf.flags |= XDRBUF_WRITE;
if (args->bitmask)
encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
}
/*
* a COMMIT request
*/
static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs_commitargs *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_commit(xdr, args, &hdr);
encode_nops(&hdr);
}
/*
* FSINFO request
*/
static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs4_fsinfo_arg *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_fsinfo(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
}
/*
* a PATHCONF request
*/
static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
const struct nfs4_pathconf_arg *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
&hdr);
encode_nops(&hdr);
}
/*
* a STATFS request
*/
static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
const struct nfs4_statfs_arg *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
encode_nops(&hdr);
}
/*
* GETATTR_BITMAP request
*/
static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs4_server_caps_arg *args)
{
const u32 *bitmask = args->bitmask;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fhandle, &hdr);
encode_getattr_three(xdr, bitmask[0], bitmask[1], bitmask[2], &hdr);
encode_nops(&hdr);
}
/*
* a RENEW request
*/
static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs_client *clp)
{
struct compound_hdr hdr = {
.nops = 0,
};
encode_compound_hdr(xdr, req, &hdr);
encode_renew(xdr, clp->cl_clientid, &hdr);
encode_nops(&hdr);
}
/*
* a SETCLIENTID request
*/
static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs4_setclientid *sc)
{
struct compound_hdr hdr = {
.nops = 0,
};
encode_compound_hdr(xdr, req, &hdr);
encode_setclientid(xdr, sc, &hdr);
encode_nops(&hdr);
}
/*
* a SETCLIENTID_CONFIRM request
*/
static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs4_setclientid_res *arg)
{
struct compound_hdr hdr = {
.nops = 0,
};
encode_compound_hdr(xdr, req, &hdr);
encode_setclientid_confirm(xdr, arg, &hdr);
encode_nops(&hdr);
}
/*
* DELEGRETURN request
*/
static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
struct xdr_stream *xdr,
const struct nfs4_delegreturnargs *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fhandle, &hdr);
encode_getfattr(xdr, args->bitmask, &hdr);
encode_delegreturn(xdr, args->stateid, &hdr);
encode_nops(&hdr);
}
/*
* Encode FS_LOCATIONS request
*/
static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs4_fs_locations_arg *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
uint32_t replen;
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
if (args->migration) {
encode_putfh(xdr, args->fh, &hdr);
replen = hdr.replen;
encode_fs_locations(xdr, args->bitmask, &hdr);
if (args->renew)
encode_renew(xdr, args->clientid, &hdr);
} else {
encode_putfh(xdr, args->dir_fh, &hdr);
encode_lookup(xdr, args->name, &hdr);
replen = hdr.replen;
encode_fs_locations(xdr, args->bitmask, &hdr);
}
/* Set up reply kvec to capture returned fs_locations array. */
xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
0, PAGE_SIZE);
encode_nops(&hdr);
}
/*
* Encode SECINFO request
*/
static void nfs4_xdr_enc_secinfo(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs4_secinfo_arg *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->dir_fh, &hdr);
encode_secinfo(xdr, args->name, &hdr);
encode_nops(&hdr);
}
/*
* Encode FSID_PRESENT request
*/
static void nfs4_xdr_enc_fsid_present(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs4_fsid_present_arg *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_getfh(xdr, &hdr);
if (args->renew)
encode_renew(xdr, args->clientid, &hdr);
encode_nops(&hdr);
}
#if defined(CONFIG_NFS_V4_1)
/*
* BIND_CONN_TO_SESSION request
*/
static void nfs4_xdr_enc_bind_conn_to_session(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs41_bind_conn_to_session_args *args)
{
struct compound_hdr hdr = {
.minorversion = args->client->cl_mvops->minor_version,
};
encode_compound_hdr(xdr, req, &hdr);
encode_bind_conn_to_session(xdr, args, &hdr);
encode_nops(&hdr);
}
/*
* EXCHANGE_ID request
*/
static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs41_exchange_id_args *args)
{
struct compound_hdr hdr = {
.minorversion = args->client->cl_mvops->minor_version,
};
encode_compound_hdr(xdr, req, &hdr);
encode_exchange_id(xdr, args, &hdr);
encode_nops(&hdr);
}
/*
* a CREATE_SESSION request
*/
static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs41_create_session_args *args)
{
struct compound_hdr hdr = {
.minorversion = args->client->cl_mvops->minor_version,
};
encode_compound_hdr(xdr, req, &hdr);
encode_create_session(xdr, args, &hdr);
encode_nops(&hdr);
}
/*
* a DESTROY_SESSION request
*/
static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs4_session *session)
{
struct compound_hdr hdr = {
.minorversion = session->clp->cl_mvops->minor_version,
};
encode_compound_hdr(xdr, req, &hdr);
encode_destroy_session(xdr, session, &hdr);
encode_nops(&hdr);
}
/*
* a DESTROY_CLIENTID request
*/
static void nfs4_xdr_enc_destroy_clientid(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs_client *clp)
{
struct compound_hdr hdr = {
.minorversion = clp->cl_mvops->minor_version,
};
encode_compound_hdr(xdr, req, &hdr);
encode_destroy_clientid(xdr, clp->cl_clientid, &hdr);
encode_nops(&hdr);
}
/*
* a SEQUENCE request
*/
static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs4_sequence_args *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, args, &hdr);
encode_nops(&hdr);
}
/*
* a GET_LEASE_TIME request
*/
static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs4_get_lease_time_args *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
};
const u32 lease_bitmap[3] = { FATTR4_WORD0_LEASE_TIME };
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);
}
/*
* a RECLAIM_COMPLETE request
*/
static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs41_reclaim_complete_args *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args)
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_reclaim_complete(xdr, args, &hdr);
encode_nops(&hdr);
}
/*
* Encode GETDEVICEINFO request
*/
static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs4_getdeviceinfo_args *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_getdeviceinfo(xdr, args, &hdr);
/* set up reply kvec. Subtract notification bitmap max size (2)
* so that notification bitmap is put in xdr_buf tail */
xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
args->pdev->pages, args->pdev->pgbase,
args->pdev->pglen);
encode_nops(&hdr);
}
/*
* Encode LAYOUTGET request
*/
static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs4_layoutget_args *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, NFS_FH(args->inode), &hdr);
encode_layoutget(xdr, args, &hdr);
xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
args->layout.pages, 0, args->layout.pglen);
encode_nops(&hdr);
}
/*
* Encode LAYOUTCOMMIT request
*/
static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs4_layoutcommit_args *args)
{
struct nfs4_layoutcommit_data *data =
container_of(args, struct nfs4_layoutcommit_data, args);
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, NFS_FH(args->inode), &hdr);
encode_layoutcommit(xdr, data->args.inode, args, &hdr);
encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
}
/*
* Encode LAYOUTRETURN request
*/
static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs4_layoutreturn_args *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, NFS_FH(args->inode), &hdr);
encode_layoutreturn(xdr, args, &hdr);
encode_nops(&hdr);
}
/*
* Encode SECINFO_NO_NAME request
*/
static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs41_secinfo_no_name_args *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putrootfh(xdr, &hdr);
encode_secinfo_no_name(xdr, args, &hdr);
encode_nops(&hdr);
return 0;
}
/*
* Encode TEST_STATEID request
*/
static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs41_test_stateid_args *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_test_stateid(xdr, args, &hdr);
encode_nops(&hdr);
}
/*
* Encode FREE_STATEID request
*/
static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs41_free_stateid_args *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_free_stateid(xdr, args, &hdr);
encode_nops(&hdr);
}
#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 bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
int *nfs_retval)
{
__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 (unlikely(opnum != expected))
goto out_bad_operation;
nfserr = be32_to_cpup(p);
if (nfserr == NFS_OK)
*nfs_retval = 0;
else
*nfs_retval = nfs4_stat_to_errno(nfserr);
return true;
out_bad_operation:
dprintk("nfs: Server returned operation"
" %d but we issued a request for %d\n",
opnum, expected);
*nfs_retval = -EREMOTEIO;
return false;
out_overflow:
print_overflow_msg(__func__, xdr);
*nfs_retval = -EIO;
return false;
}
static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
{
int retval;
__decode_op_hdr(xdr, expected, &retval);
return retval;
}
/* 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] = bitmap[2] = 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++);
if (bmlen > 2)
bitmap[2] = be32_to_cpup(p);
}
}
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep)
{
__be32 *p;
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
*attrlen = be32_to_cpup(p);
*savep = xdr_stream_pos(xdr);
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] = bitmask[2] = 0;
dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
bitmask[0], bitmask[1], bitmask[2]);
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_fh_expire_type(struct xdr_stream *xdr,
uint32_t *bitmap, uint32_t *type)
{
__be32 *p;
*type = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_FH_EXPIRE_TYPE - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_FH_EXPIRE_TYPE)) {
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
*type = be32_to_cpup(p);
bitmap[0] &= ~FATTR4_WORD0_FH_EXPIRE_TYPE;
}
dprintk("%s: expire type=0x%x\n", __func__, *type);
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
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, int32_t *res)
{
__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;
*res = -be32_to_cpup(p);
}
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int decode_attr_exclcreat_supported(struct xdr_stream *xdr,
uint32_t *bitmap, uint32_t *bitmask)
{
if (likely(bitmap[2] & FATTR4_WORD2_SUPPATTR_EXCLCREAT)) {
int ret;
ret = decode_attr_bitmap(xdr, bitmask);
if (unlikely(ret < 0))
return ret;
bitmap[2] &= ~FATTR4_WORD2_SUPPATTR_EXCLCREAT;
} else
bitmask[0] = bitmask[1] = bitmask[2] = 0;
dprintk("%s: bitmask=%08x:%08x:%08x\n", __func__,
bitmask[0], bitmask[1], bitmask[2]);
return 0;
}
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 = 0;
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_MOUNTED_ON_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("pathname4: ");
if (n > NFS4_PATHNAME_MAXCOMPONENTS) {
dprintk("cannot parse %d components in path\n", n);
goto out_eio;
}
for (path->ncomponents = 0; path->ncomponents < n; path->ncomponents++) {
struct nfs4_string *component = &path->components[path->ncomponents];
status = decode_opaque_inline(xdr, &component->len, &component->data);
if (unlikely(status != 0))
goto out_eio;
ifdebug (XDR)
pr_cont("%s%.*s ",
(path->ncomponents != n ? "/ " : ""),
component->len, component->data);
}
out:
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("pathname4: /\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;
bitmap[0] &= ~FATTR4_WORD0_FS_LOCATIONS;
status = -EIO;
/* Ignore borken servers that return unrequested attrs */
if (unlikely(res == NULL))
goto out;
dprintk("%s: fsroot:\n", __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;
for (res->nlocations = 0; res->nlocations < n; res->nlocations++) {
u32 m;
struct nfs4_fs_location *loc;
if (res->nlocations == NFS4_FS_LOCATIONS_MAXENTRIES)
break;
loc = &res->locations[res->nlocations];
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
m = be32_to_cpup(p);
dprintk("%s: servers:\n", __func__);
for (loc->nservers = 0; loc->nservers < m; loc->nservers++) {
struct nfs4_string *server;
if (loc->nservers == NFS4_FS_LOCATION_MAXSERVERS) {
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;
}
break;
}
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);
}
status = decode_pathname(xdr, &loc->rootpath);
if (unlikely(status != 0))
goto out_eio;
}
if (res->nlocations != 0)
status = NFS_ATTR_FATTR_V4_LOCATIONS;
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,
const struct nfs_server *server, kuid_t *uid,
struct nfs4_string *owner_name)
{
uint32_t len;
__be32 *p;
int ret = 0;
*uid = make_kuid(&init_user_ns, -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 (owner_name != NULL) {
owner_name->data = kmemdup(p, len, GFP_NOWAIT);
if (owner_name->data != NULL) {
owner_name->len = len;
ret = NFS_ATTR_FATTR_OWNER_NAME;
}
} else if (len < XDR_MAX_NETOBJ) {
if (nfs_map_name_to_uid(server, (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)from_kuid(&init_user_ns, *uid));
return ret;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
const struct nfs_server *server, kgid_t *gid,
struct nfs4_string *group_name)
{
uint32_t len;
__be32 *p;
int ret = 0;
*gid = make_kgid(&init_user_ns, -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 (group_name != NULL) {
group_name->data = kmemdup(p, len, GFP_NOWAIT);
if (group_name->data != NULL) {
group_name->len = len;
ret = NFS_ATTR_FATTR_GROUP_NAME;
}
} else if (len < XDR_MAX_NETOBJ) {
if (nfs_map_group_to_gid(server, (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)from_kgid(&init_user_ns, *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_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
struct nfs4_label *label)
{
uint32_t pi = 0;
uint32_t lfs = 0;
__u32 len;
__be32 *p;
int status = 0;
if (unlikely(bitmap[2] & (FATTR4_WORD2_SECURITY_LABEL - 1U)))
return -EIO;
if (likely(bitmap[2] & FATTR4_WORD2_SECURITY_LABEL)) {
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
lfs = be32_to_cpup(p++);
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
pi = be32_to_cpup(p++);
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
len = be32_to_cpup(p++);
p = xdr_inline_decode(xdr, len);
if (unlikely(!p))
goto out_overflow;
if (len < NFS4_MAXLABELLEN) {
if (label) {
memcpy(label->label, p, len);
label->len = len;
label->pi = pi;
label->lfs = lfs;
status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
}
bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
} else
printk(KERN_WARNING "%s: label too long (%u)!\n",
__func__, len);
}
if (label && label->label)
dprintk("%s: label=%s, len=%d, PI=%d, LFS=%d\n", __func__,
(char *)label->label, label->len, label->pi, label->lfs);
return status;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
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, unsigned int savep, uint32_t attrlen)
{
unsigned int attrwords = XDR_QUADLEN(attrlen);
unsigned int nwords = (xdr_stream_pos(xdr) - savep) >> 2;
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, u32 *supported, u32 *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);
*supported = supp;
*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, NFS4_STATEID_SIZE);
}
static int decode_open_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
{
stateid->type = NFS4_OPEN_STATEID_TYPE;
return decode_stateid(xdr, stateid);
}
static int decode_lock_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
{
stateid->type = NFS4_LOCK_STATEID_TYPE;
return decode_stateid(xdr, stateid);
}
static int decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
{
stateid->type = NFS4_DELEGATION_STATEID_TYPE;
return decode_stateid(xdr, stateid);
}
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_open_stateid(xdr, &res->stateid);
return status;
}
static int decode_verifier(struct xdr_stream *xdr, void *verifier)
{
return decode_opaque_fixed(xdr, verifier, NFS4_VERIFIER_SIZE);
}
static int decode_write_verifier(struct xdr_stream *xdr, struct nfs_write_verifier *verifier)
{
return decode_opaque_fixed(xdr, verifier->data, NFS4_VERIFIER_SIZE);
}
static int decode_commit(struct xdr_stream *xdr, struct nfs_commitres *res)
{
int status;
status = decode_op_hdr(xdr, OP_COMMIT);
if (!status)
status = decode_write_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)
{
unsigned int savep;
uint32_t attrlen, bitmap[3] = {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_fh_expire_type(xdr, bitmap,
&res->fh_expire_type)) != 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;
if ((status = decode_attr_exclcreat_supported(xdr, bitmap,
res->exclcreat_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)
{
unsigned int savep;
uint32_t attrlen, bitmap[3] = {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;
status = -EIO;
if (unlikely(bitmap[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)
{
unsigned int savep;
uint32_t attrlen, bitmap[3] = {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_threshold_hint(struct xdr_stream *xdr,
uint32_t *bitmap,
uint64_t *res,
uint32_t hint_bit)
{
__be32 *p;
*res = 0;
if (likely(bitmap[0] & hint_bit)) {
p = xdr_inline_decode(xdr, 8);
if (unlikely(!p))
goto out_overflow;
xdr_decode_hyper(p, res);
}
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int decode_first_threshold_item4(struct xdr_stream *xdr,
struct nfs4_threshold *res)
{
__be32 *p;
unsigned int savep;
uint32_t bitmap[3] = {0,}, attrlen;
int status;
/* layout type */
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p)) {
print_overflow_msg(__func__, xdr);
return -EIO;
}
res->l_type = be32_to_cpup(p);
/* thi_hintset bitmap */
status = decode_attr_bitmap(xdr, bitmap);
if (status < 0)
goto xdr_error;
/* thi_hintlist length */
status = decode_attr_length(xdr, &attrlen, &savep);
if (status < 0)
goto xdr_error;
/* thi_hintlist */
status = decode_threshold_hint(xdr, bitmap, &res->rd_sz, THRESHOLD_RD);
if (status < 0)
goto xdr_error;
status = decode_threshold_hint(xdr, bitmap, &res->wr_sz, THRESHOLD_WR);
if (status < 0)
goto xdr_error;
status = decode_threshold_hint(xdr, bitmap, &res->rd_io_sz,
THRESHOLD_RD_IO);
if (status < 0)
goto xdr_error;
status = decode_threshold_hint(xdr, bitmap, &res->wr_io_sz,
THRESHOLD_WR_IO);
if (status < 0)
goto xdr_error;
status = verify_attr_len(xdr, savep, attrlen);
res->bm = bitmap[0];
dprintk("%s bm=0x%x rd_sz=%llu wr_sz=%llu rd_io=%llu wr_io=%llu\n",
__func__, res->bm, res->rd_sz, res->wr_sz, res->rd_io_sz,
res->wr_io_sz);
xdr_error:
dprintk("%s ret=%d!\n", __func__, status);
return status;
}
/*
* Thresholds on pNFS direct I/O vrs MDS I/O
*/
static int decode_attr_mdsthreshold(struct xdr_stream *xdr,
uint32_t *bitmap,
struct nfs4_threshold *res)
{
__be32 *p;
int status = 0;
uint32_t num;
if (unlikely(bitmap[2] & (FATTR4_WORD2_MDSTHRESHOLD - 1U)))
return -EIO;
if (bitmap[2] & FATTR4_WORD2_MDSTHRESHOLD) {
/* Did the server return an unrequested attribute? */
if (unlikely(res == NULL))
return -EREMOTEIO;
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
num = be32_to_cpup(p);
if (num == 0)
return 0;
if (num > 1)
printk(KERN_INFO "%s: Warning: Multiple pNFS layout "
"drivers per filesystem not supported\n",
__func__);
status = decode_first_threshold_item4(xdr, res);
bitmap[2] &= ~FATTR4_WORD2_MDSTHRESHOLD;
}
return status;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
struct nfs_fattr *fattr, struct nfs_fh *fh,
struct nfs4_fs_locations *fs_loc, struct nfs4_label *label,
const struct nfs_server *server)
{
int status;
umode_t fmode = 0;
uint32_t type;
int32_t err;
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;
err = 0;
status = decode_attr_error(xdr, bitmap, &err);
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, fs_loc);
if (status < 0)
goto xdr_error;
fattr->valid |= status;
status = -EIO;
if (unlikely(bitmap[0]))
goto xdr_error;
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, &fattr->uid, fattr->owner_name);
if (status < 0)
goto xdr_error;
fattr->valid |= status;
status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
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, &fattr->mounted_on_fileid);
if (status < 0)
goto xdr_error;
fattr->valid |= status;
status = -EIO;
if (unlikely(bitmap[1]))
goto xdr_error;
status = decode_attr_mdsthreshold(xdr, bitmap, fattr->mdsthreshold);
if (status < 0)
goto xdr_error;
if (label) {
status = decode_attr_security_label(xdr, bitmap, label);
if (status < 0)
goto xdr_error;
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, struct nfs4_fs_locations *fs_loc,
struct nfs4_label *label, const struct nfs_server *server)
{
unsigned int savep;
uint32_t attrlen,
bitmap[3] = {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, fs_loc,
label, server);
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_label(struct xdr_stream *xdr, struct nfs_fattr *fattr,
struct nfs4_label *label, const struct nfs_server *server)
{
return decode_getfattr_generic(xdr, fattr, NULL, NULL, label, server);
}
static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
const struct nfs_server *server)
{
return decode_getfattr_generic(xdr, fattr, NULL, NULL, NULL, server);
}
/*
* 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)
{
__be32 *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 "NFS: %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;
}
/*
* The prefered block size for layout directed io
*/
static int decode_attr_layout_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
uint32_t *res)
{
__be32 *p;
dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
*res = 0;
if (bitmap[2] & FATTR4_WORD2_LAYOUT_BLKSIZE) {
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p)) {
print_overflow_msg(__func__, xdr);
return -EIO;
}
*res = be32_to_cpup(p);
bitmap[2] &= ~FATTR4_WORD2_LAYOUT_BLKSIZE;
}
return 0;
}
/*
* The granularity of a CLONE operation.
*/
static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
uint32_t *res)
{
__be32 *p;
dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
*res = 0;
if (bitmap[2] & FATTR4_WORD2_CLONE_BLKSIZE) {
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p)) {
print_overflow_msg(__func__, xdr);
return -EIO;
}
*res = be32_to_cpup(p);
bitmap[2] &= ~FATTR4_WORD2_CLONE_BLKSIZE;
}
return 0;
}
static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
{
unsigned int savep;
uint32_t attrlen, bitmap[3];
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 = -EIO;
if (unlikely(bitmap[0]))
goto xdr_error;
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 = -EIO;
if (unlikely(bitmap[1]))
goto xdr_error;
status = decode_attr_layout_blksize(xdr, bitmap, &fsinfo->blksize);
if (status)
goto xdr_error;
status = decode_attr_clone_blksize(xdr, bitmap, &fsinfo->clone_blksize);
if (status)
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_lock_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_lock_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,
unsigned long *pagemod_limit)
{
__be32 *p;
uint32_t limit_type, nblocks, blocksize;
u64 maxsize = 0;
p = xdr_inline_decode(xdr, 12);
if (unlikely(!p))
goto out_overflow;
limit_type = be32_to_cpup(p++);
switch (limit_type) {
case NFS4_LIMIT_SIZE:
xdr_decode_hyper(p, &maxsize);
break;
case NFS4_LIMIT_BLOCKS:
nblocks = be32_to_cpup(p++);
blocksize = be32_to_cpup(p);
maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
}
maxsize >>= PAGE_SHIFT;
*pagemod_limit = min_t(u64, maxsize, ULONG_MAX);
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int decode_rw_delegation(struct xdr_stream *xdr,
uint32_t delegation_type,
struct nfs_openres *res)
{
__be32 *p;
int status;
status = decode_delegation_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->pagemod_limit) < 0)
return -EIO;
}
return decode_ace(xdr, NULL, res->server->nfs_client);
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int decode_no_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
{
__be32 *p;
uint32_t why_no_delegation;
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
why_no_delegation = be32_to_cpup(p);
switch (why_no_delegation) {
case WND4_CONTENTION:
case WND4_RESOURCE:
xdr_inline_decode(xdr, 4);
/* Ignore for now */
}
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;
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
delegation_type = be32_to_cpup(p);
res->delegation_type = 0;
switch (delegation_type) {
case NFS4_OPEN_DELEGATE_NONE:
return 0;
case NFS4_OPEN_DELEGATE_READ:
case NFS4_OPEN_DELEGATE_WRITE:
return decode_rw_delegation(xdr, delegation_type, res);
case NFS4_OPEN_DELEGATE_NONE_EXT:
return decode_no_delegation(xdr, res);
}
return -EIO;
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;
if (!__decode_op_hdr(xdr, OP_OPEN, &status))
return status;
nfs_increment_open_seqid(status, res->seqid);
if (status)
return status;
status = decode_open_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_open_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_open_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_pgio_res *res)
{
__be32 *p;
uint32_t count, eof, recvd;
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);
recvd = xdr_read_pages(xdr, count);
if (count > recvd) {
dprintk("NFS: server cheating in read reply: "
"count %u > recvd %u\n", count, recvd);
count = recvd;
eof = 0;
}
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)
{
int status;
__be32 verf[2];
status = decode_op_hdr(xdr, OP_READDIR);
if (!status)
status = decode_verifier(xdr, readdir->verifier.data);
if (unlikely(status))
return status;
memcpy(verf, readdir->verifier.data, sizeof(verf));
dprintk("%s: verifier = %08x:%08x\n",
__func__, verf[0], verf[1]);
return xdr_read_pages(xdr, xdr->buf->page_len);
}
static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
{
struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
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;
}
recvd = xdr_read_pages(xdr, len);
if (recvd < len) {
dprintk("NFS: server cheating in readlink reply: "
"count %u > recvd %u\n", len, recvd);
return -EIO;
}
/*
* The XDR encode routine has set things up so that
* the link text will be copied directly into the
* buffer. We just have to do overflow-checking,
* and and null-terminate the text (the VFS expects
* null-termination).
*/
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,
struct nfs_getaclres *res)
{
unsigned int savep;
uint32_t attrlen,
bitmap[3] = {0};
int status;
unsigned int pg_offset;
res->acl_len = 0;
if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
goto out;
xdr_enter_page(xdr, xdr->buf->page_len);
/* Calculate the offset of the page data */
pg_offset = xdr->buf->head[0].iov_len;
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)) {
/* The bitmap (xdr len + bitmaps) and the attr xdr len words
* are stored with the acl data to handle the problem of
* variable length bitmaps.*/
res->acl_data_offset = xdr_stream_pos(xdr) - pg_offset;
res->acl_len = attrlen;
/* Check for receive buffer overflow */
if (res->acl_len > (xdr->nwords << 2) ||
res->acl_len + res->acl_data_offset > xdr->buf->page_len) {
res->acl_flags |= NFS4_ACL_TRUNC;
dprintk("NFS: acl reply: attrlen %u > page_len %u\n",
attrlen, xdr->nwords << 2);
}
} 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_pgio_res *res)
{
__be32 *p;
int status;
status = decode_op_hdr(xdr, OP_WRITE);
if (status)
return status;
p = xdr_inline_decode(xdr, 8);
if (unlikely(!p))
goto out_overflow;
res->count = be32_to_cpup(p++);
res->verf->committed = be32_to_cpup(p++);
return decode_write_verifier(xdr, &res->verf->verifier);
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int decode_delegreturn(struct xdr_stream *xdr)
{
return decode_op_hdr(xdr, OP_DELEGRETURN);
}
static int decode_secinfo_gss(struct xdr_stream *xdr,
struct nfs4_secinfo4 *flavor)
{
u32 oid_len;
__be32 *p;
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
oid_len = be32_to_cpup(p);
if (oid_len > GSS_OID_MAX_LEN)
goto out_err;
p = xdr_inline_decode(xdr, oid_len);
if (unlikely(!p))
goto out_overflow;
memcpy(flavor->flavor_info.oid.data, p, oid_len);
flavor->flavor_info.oid.len = oid_len;
p = xdr_inline_decode(xdr, 8);
if (unlikely(!p))
goto out_overflow;
flavor->flavor_info.qop = be32_to_cpup(p++);
flavor->flavor_info.service = be32_to_cpup(p);
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
out_err:
return -EINVAL;
}
static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
{
struct nfs4_secinfo4 *sec_flavor;
unsigned int i, num_flavors;
int status;
__be32 *p;
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
res->flavors->num_flavors = 0;
num_flavors = be32_to_cpup(p);
for (i = 0; i < num_flavors; i++) {
sec_flavor = &res->flavors->flavors[i];
if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
break;
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
sec_flavor->flavor = be32_to_cpup(p);
if (sec_flavor->flavor == RPC_AUTH_GSS) {
status = decode_secinfo_gss(xdr, sec_flavor);
if (status)
goto out;
}
res->flavors->num_flavors++;
}
status = 0;
out:
return status;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
{
int status = decode_op_hdr(xdr, OP_SECINFO);
if (status)
return status;
return decode_secinfo_common(xdr, res);
}
#if defined(CONFIG_NFS_V4_1)
static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
{
int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME);
if (status)
return status;
return decode_secinfo_common(xdr, res);
}
static int decode_op_map(struct xdr_stream *xdr, struct nfs4_op_map *op_map)
{
__be32 *p;
uint32_t bitmap_words;
unsigned int i;
p = xdr_inline_decode(xdr, 4);
bitmap_words = be32_to_cpup(p++);
if (bitmap_words > NFS4_OP_MAP_NUM_WORDS)
return -EIO;
p = xdr_inline_decode(xdr, 4 * bitmap_words);
for (i = 0; i < bitmap_words; i++)
op_map->u.words[i] = be32_to_cpup(p++);
return 0;
}
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;
uint32_t impl_id_count;
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, &res->clientid);
p = xdr_inline_decode(xdr, 12);
if (unlikely(!p))
goto out_overflow;
res->seqid = be32_to_cpup(p++);
res->flags = be32_to_cpup(p++);
res->state_protect.how = be32_to_cpup(p);
switch (res->state_protect.how) {
case SP4_NONE:
break;
case SP4_MACH_CRED:
status = decode_op_map(xdr, &res->state_protect.enforce);
if (status)
return status;
status = decode_op_map(xdr, &res->state_protect.allow);
if (status)
return status;
break;
default:
WARN_ON_ONCE(1);
return -EIO;
}
/* server_owner4.so_minor_id */
p = xdr_inline_decode(xdr, 8);
if (unlikely(!p))
goto out_overflow;
p = xdr_decode_hyper(p, &res->server_owner->minor_id);
/* server_owner4.so_major_id */
status = decode_opaque_inline(xdr, &dummy, &dummy_str);
if (unlikely(status))
return status;
if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
return -EIO;
memcpy(res->server_owner->major_id, dummy_str, dummy);
res->server_owner->major_id_sz = dummy;
/* server_scope4 */
status = decode_opaque_inline(xdr, &dummy, &dummy_str);
if (unlikely(status))
return status;
if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
return -EIO;
memcpy(res->server_scope->server_scope, dummy_str, dummy);
res->server_scope->server_scope_sz = dummy;
/* Implementation Id */
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
impl_id_count = be32_to_cpup(p++);
if (impl_id_count) {
/* nii_domain */
status = decode_opaque_inline(xdr, &dummy, &dummy_str);
if (unlikely(status))
return status;
if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
return -EIO;
memcpy(res->impl_id->domain, dummy_str, dummy);
/* nii_name */
status = decode_opaque_inline(xdr, &dummy, &dummy_str);
if (unlikely(status))
return status;
if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
return -EIO;
memcpy(res->impl_id->name, dummy_str, dummy);
/* nii_date */
p = xdr_inline_decode(xdr, 12);
if (unlikely(!p))
goto out_overflow;
p = xdr_decode_hyper(p, &res->impl_id->date.seconds);
res->impl_id->date.nseconds = be32_to_cpup(p);
/* if there's more than one entry, ignore the rest */
}
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, val;
p = xdr_inline_decode(xdr, 28);
if (unlikely(!p))
goto out_overflow;
val = be32_to_cpup(p++); /* headerpadsz */
if (val)
return -EINVAL; /* no support for header padding yet */
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 "NFS: %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_bind_conn_to_session(struct xdr_stream *xdr,
struct nfs41_bind_conn_to_session_res *res)
{
__be32 *p;
int status;
status = decode_op_hdr(xdr, OP_BIND_CONN_TO_SESSION);
if (!status)
status = decode_sessionid(xdr, &res->sessionid);
if (unlikely(status))
return status;
/* dir flags, rdma mode bool */
p = xdr_inline_decode(xdr, 8);
if (unlikely(!p))
goto out_overflow;
res->dir = be32_to_cpup(p++);
if (res->dir == 0 || res->dir > NFS4_CDFS4_BOTH)
return -EIO;
if (be32_to_cpup(p) == 0)
res->use_conn_in_rdma_mode = false;
else
res->use_conn_in_rdma_mode = true;
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int decode_create_session(struct xdr_stream *xdr,
struct nfs41_create_session_res *res)
{
__be32 *p;
int status;
status = decode_op_hdr(xdr, OP_CREATE_SESSION);
if (!status)
status = decode_sessionid(xdr, &res->sessionid);
if (unlikely(status))
return status;
/* seqid, flags */
p = xdr_inline_decode(xdr, 8);
if (unlikely(!p))
goto out_overflow;
res->seqid = be32_to_cpup(p++);
res->flags = be32_to_cpup(p);
/* Channel attributes */
status = decode_chan_attrs(xdr, &res->fc_attrs);
if (!status)
status = decode_chan_attrs(xdr, &res->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_destroy_clientid(struct xdr_stream *xdr, void *dummy)
{
return decode_op_hdr(xdr, OP_DESTROY_CLIENTID);
}
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_session *session;
struct nfs4_sessionid id;
u32 dummy;
int status;
__be32 *p;
if (res->sr_slot == NULL)
return 0;
if (!res->sr_slot->table->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;
session = res->sr_slot->table->session;
if (memcmp(id.data, 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->slot_nr) {
dprintk("%s Invalid slot id\n", __func__);
goto out_err;
}
/* highest slot id */
res->sr_highest_slotid = be32_to_cpup(p++);
/* target highest slot id */
res->sr_target_highest_slotid = 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 */
}
#if defined(CONFIG_NFS_V4_1)
static int decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
{
stateid->type = NFS4_LAYOUT_STATEID_TYPE;
return decode_stateid(xdr, stateid);
}
static int decode_getdeviceinfo(struct xdr_stream *xdr,
struct nfs4_getdeviceinfo_res *res)
{
struct pnfs_device *pdev = res->pdev;
__be32 *p;
uint32_t len, type;
int status;
status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
if (status) {
if (status == -ETOOSMALL) {
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
pdev->mincount = be32_to_cpup(p);
dprintk("%s: Min count too small. mincnt = %u\n",
__func__, pdev->mincount);
}
return status;
}
p = xdr_inline_decode(xdr, 8);
if (unlikely(!p))
goto out_overflow;
type = be32_to_cpup(p++);
if (type != pdev->layout_type) {
dprintk("%s: layout mismatch req: %u pdev: %u\n",
__func__, pdev->layout_type, type);
return -EINVAL;
}
/*
* Get the length of the opaque device_addr4. xdr_read_pages places
* the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
* and places the remaining xdr data in xdr_buf->tail
*/
pdev->mincount = be32_to_cpup(p);
if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
goto out_overflow;
/* Parse notification bitmap, verifying that it is zero. */
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
len = be32_to_cpup(p);
if (len) {
uint32_t i;
p = xdr_inline_decode(xdr, 4 * len);
if (unlikely(!p))
goto out_overflow;
res->notification = be32_to_cpup(p++);
for (i = 1; i < len; i++) {
if (be32_to_cpup(p++)) {
dprintk("%s: unsupported notification\n",
__func__);
return -EIO;
}
}
}
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
struct nfs4_layoutget_res *res)
{
__be32 *p;
int status;
u32 layout_count;
u32 recvd;
status = decode_op_hdr(xdr, OP_LAYOUTGET);
if (status)
return status;
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
res->return_on_close = be32_to_cpup(p);
decode_layout_stateid(xdr, &res->stateid);
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
layout_count = be32_to_cpup(p);
if (!layout_count) {
dprintk("%s: server responded with empty layout array\n",
__func__);
return -EINVAL;
}
p = xdr_inline_decode(xdr, 28);
if (unlikely(!p))
goto out_overflow;
p = xdr_decode_hyper(p, &res->range.offset);
p = xdr_decode_hyper(p, &res->range.length);
res->range.iomode = be32_to_cpup(p++);
res->type = be32_to_cpup(p++);
res->layoutp->len = be32_to_cpup(p);
dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
__func__,
(unsigned long)res->range.offset,
(unsigned long)res->range.length,
res->range.iomode,
res->type,
res->layoutp->len);
recvd = xdr_read_pages(xdr, res->layoutp->len);
if (res->layoutp->len > recvd) {
dprintk("NFS: server cheating in layoutget reply: "
"layout len %u > recvd %u\n",
res->layoutp->len, recvd);
return -EINVAL;
}
if (layout_count > 1) {
/* We only handle a length one array at the moment. Any
* further entries are just ignored. Note that this means
* the client may see a response that is less than the
* minimum it requested.
*/
dprintk("%s: server responded with %d layouts, dropping tail\n",
__func__, layout_count);
}
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int decode_layoutreturn(struct xdr_stream *xdr,
struct nfs4_layoutreturn_res *res)
{
__be32 *p;
int status;
status = decode_op_hdr(xdr, OP_LAYOUTRETURN);
if (status)
return status;
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
res->lrs_present = be32_to_cpup(p);
if (res->lrs_present)
status = decode_layout_stateid(xdr, &res->stateid);
return status;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int decode_layoutcommit(struct xdr_stream *xdr,
struct rpc_rqst *req,
struct nfs4_layoutcommit_res *res)
{
__be32 *p;
__u32 sizechanged;
int status;
status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT);
res->status = status;
if (status)
return status;
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
sizechanged = be32_to_cpup(p);
if (sizechanged) {
/* throw away new size */
p = xdr_inline_decode(xdr, 8);
if (unlikely(!p))
goto out_overflow;
}
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int decode_test_stateid(struct xdr_stream *xdr,
struct nfs41_test_stateid_res *res)
{
__be32 *p;
int status;
int num_res;
status = decode_op_hdr(xdr, OP_TEST_STATEID);
if (status)
return status;
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
num_res = be32_to_cpup(p++);
if (num_res != 1)
goto out;
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
res->status = be32_to_cpup(p++);
return status;
out_overflow:
print_overflow_msg(__func__, xdr);
out:
return -EIO;
}
static int decode_free_stateid(struct xdr_stream *xdr,
struct nfs41_free_stateid_res *res)
{
res->status = decode_op_hdr(xdr, OP_FREE_STATEID);
return res->status;
}
#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,
struct xdr_stream *xdr,
struct nfs_closeres *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_open_downgrade(xdr, res);
if (status != 0)
goto out;
decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
/*
* Decode ACCESS response
*/
static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs4_accessres *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status != 0)
goto out;
status = decode_access(xdr, &res->supported, &res->access);
if (status != 0)
goto out;
decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
/*
* Decode LOOKUP response
*/
static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs4_lookup_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_lookup(xdr);
if (status)
goto out;
status = decode_getfh(xdr, res->fh);
if (status)
goto out;
status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
out:
return status;
}
/*
* Decode LOOKUP_ROOT response
*/
static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
struct nfs4_lookup_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putrootfh(xdr);
if (status)
goto out;
status = decode_getfh(xdr, res->fh);
if (status == 0)
status = decode_getfattr_label(xdr, res->fattr,
res->label, res->server);
out:
return status;
}
/*
* Decode REMOVE response
*/
static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs_removeres *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_remove(xdr, &res->cinfo);
out:
return status;
}
/*
* Decode RENAME response
*/
static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs_renameres *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_savefh(xdr);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
out:
return status;
}
/*
* Decode LINK response
*/
static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs4_link_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_savefh(xdr);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_link(xdr, &res->cinfo);
if (status)
goto out;
/*
* Note order: OP_LINK leaves the directory as the current
* filehandle.
*/
status = decode_restorefh(xdr);
if (status)
goto out;
decode_getfattr_label(xdr, res->fattr, res->label, res->server);
out:
return status;
}
/*
* Decode CREATE response
*/
static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs4_create_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_create(xdr, &res->dir_cinfo);
if (status)
goto out;
status = decode_getfh(xdr, res->fh);
if (status)
goto out;
decode_getfattr_label(xdr, res->fattr, res->label, res->server);
out:
return status;
}
/*
* Decode SYMLINK response
*/
static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs4_create_res *res)
{
return nfs4_xdr_dec_create(rqstp, xdr, res);
}
/*
* Decode GETATTR response
*/
static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs4_getattr_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_getfattr_label(xdr, res->fattr, res->label, res->server);
out:
return status;
}
/*
* Encode an SETACL request
*/
static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs_setaclargs *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->fh, &hdr);
encode_setacl(xdr, args, &hdr);
encode_nops(&hdr);
}
/*
* Decode SETACL response
*/
static int
nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs_setaclres *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_setattr(xdr);
out:
return status;
}
/*
* Decode GETACL response
*/
static int
nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs_getaclres *res)
{
struct compound_hdr hdr;
int status;
if (res->acl_scratch != NULL) {
void *p = page_address(res->acl_scratch);
xdr_set_scratch_buffer(xdr, p, PAGE_SIZE);
}
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);
out:
return status;
}
/*
* Decode CLOSE response
*/
static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs_closeres *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_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);
out:
return status;
}
/*
* Decode OPEN response
*/
static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs_openres *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_open(xdr, res);
if (status)
goto out;
status = decode_getfh(xdr, &res->fh);
if (status)
goto out;
if (res->access_request)
decode_access(xdr, &res->access_supported, &res->access_result);
decode_getfattr_label(xdr, res->f_attr, res->f_label, res->server);
out:
return status;
}
/*
* Decode OPEN_CONFIRM response
*/
static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
struct nfs_open_confirmres *res)
{
struct compound_hdr hdr;
int status;
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,
struct xdr_stream *xdr,
struct nfs_openres *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_open(xdr, res);
if (status)
goto out;
if (res->access_request)
decode_access(xdr, &res->access_supported, &res->access_result);
decode_getfattr(xdr, res->f_attr, res->server);
out:
return status;
}
/*
* Decode SETATTR response
*/
static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
struct nfs_setattrres *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_setattr(xdr);
if (status)
goto out;
decode_getfattr_label(xdr, res->fattr, res->label, res->server);
out:
return status;
}
/*
* Decode LOCK response
*/
static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs_lock_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_lock(xdr, res);
out:
return status;
}
/*
* Decode LOCKT response
*/
static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs_lockt_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_lockt(xdr, res);
out:
return status;
}
/*
* Decode LOCKU response
*/
static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs_locku_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_locku(xdr, res);
out:
return status;
}
static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
struct xdr_stream *xdr, void *dummy)
{
struct compound_hdr hdr;
int status;
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,
struct xdr_stream *xdr,
struct nfs4_readlink_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_readlink(xdr, rqstp);
out:
return status;
}
/*
* Decode READDIR response
*/
static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs4_readdir_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_readdir(xdr, rqstp, res);
out:
return status;
}
/*
* Decode Read response
*/
static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs_pgio_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
res->op_status = hdr.status;
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, struct xdr_stream *xdr,
struct nfs_pgio_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
res->op_status = hdr.status;
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;
if (res->fattr)
decode_getfattr(xdr, res->fattr, res->server);
if (!status)
status = res->count;
out:
return status;
}
/*
* Decode COMMIT response
*/
static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs_commitres *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
res->op_status = hdr.status;
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);
out:
return status;
}
/*
* Decode FSINFO response
*/
static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs4_fsinfo_res *res)
{
struct compound_hdr hdr;
int status;
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, struct xdr_stream *xdr,
struct nfs4_pathconf_res *res)
{
struct compound_hdr hdr;
int status;
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, struct xdr_stream *xdr,
struct nfs4_statfs_res *res)
{
struct compound_hdr hdr;
int status;
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,
struct xdr_stream *xdr,
struct nfs4_server_caps_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, req);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_server_caps(xdr, res);
out:
return status;
}
/*
* Decode RENEW response
*/
static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
void *__unused)
{
struct compound_hdr hdr;
int status;
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,
struct xdr_stream *xdr,
struct nfs4_setclientid_res *res)
{
struct compound_hdr hdr;
int status;
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,
struct xdr_stream *xdr)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (!status)
status = decode_setclientid_confirm(xdr);
return status;
}
/*
* Decode DELEGRETURN response
*/
static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
struct nfs4_delegreturnres *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status != 0)
goto out;
status = decode_getfattr(xdr, res->fattr, res->server);
if (status != 0)
goto out;
status = decode_delegreturn(xdr);
out:
return status;
}
/*
* Decode FS_LOCATIONS response
*/
static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs4_fs_locations_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, req);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
if (res->migration) {
xdr_enter_page(xdr, PAGE_SIZE);
status = decode_getfattr_generic(xdr,
&res->fs_locations->fattr,
NULL, res->fs_locations,
NULL, res->fs_locations->server);
if (status)
goto out;
if (res->renew)
status = decode_renew(xdr);
} else {
status = decode_lookup(xdr);
if (status)
goto out;
xdr_enter_page(xdr, PAGE_SIZE);
status = decode_getfattr_generic(xdr,
&res->fs_locations->fattr,
NULL, res->fs_locations,
NULL, res->fs_locations->server);
}
out:
return status;
}
/*
* Decode SECINFO response
*/
static int nfs4_xdr_dec_secinfo(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
struct nfs4_secinfo_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_secinfo(xdr, res);
out:
return status;
}
/*
* Decode FSID_PRESENT response
*/
static int nfs4_xdr_dec_fsid_present(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
struct nfs4_fsid_present_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_getfh(xdr, res->fh);
if (status)
goto out;
if (res->renew)
status = decode_renew(xdr);
out:
return status;
}
#if defined(CONFIG_NFS_V4_1)
/*
* Decode BIND_CONN_TO_SESSION response
*/
static int nfs4_xdr_dec_bind_conn_to_session(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
void *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (!status)
status = decode_bind_conn_to_session(xdr, res);
return status;
}
/*
* Decode EXCHANGE_ID response
*/
static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
void *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (!status)
status = decode_exchange_id(xdr, res);
return status;
}
/*
* Decode CREATE_SESSION response
*/
static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
struct nfs41_create_session_res *res)
{
struct compound_hdr hdr;
int status;
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,
struct xdr_stream *xdr,
void *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (!status)
status = decode_destroy_session(xdr, res);
return status;
}
/*
* Decode DESTROY_CLIENTID response
*/
static int nfs4_xdr_dec_destroy_clientid(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
void *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (!status)
status = decode_destroy_clientid(xdr, res);
return status;
}
/*
* Decode SEQUENCE response
*/
static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
struct nfs4_sequence_res *res)
{
struct compound_hdr hdr;
int status;
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,
struct xdr_stream *xdr,
struct nfs4_get_lease_time_res *res)
{
struct compound_hdr hdr;
int status;
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,
struct xdr_stream *xdr,
struct nfs41_reclaim_complete_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (!status)
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (!status)
status = decode_reclaim_complete(xdr, NULL);
return status;
}
/*
* Decode GETDEVINFO response
*/
static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
struct nfs4_getdeviceinfo_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status != 0)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status != 0)
goto out;
status = decode_getdeviceinfo(xdr, res);
out:
return status;
}
/*
* Decode LAYOUTGET response
*/
static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
struct nfs4_layoutget_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_layoutget(xdr, rqstp, res);
out:
return status;
}
/*
* Decode LAYOUTRETURN response
*/
static int nfs4_xdr_dec_layoutreturn(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
struct nfs4_layoutreturn_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_layoutreturn(xdr, res);
out:
return status;
}
/*
* Decode LAYOUTCOMMIT response
*/
static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
struct nfs4_layoutcommit_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_layoutcommit(xdr, rqstp, res);
if (status)
goto out;
decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
/*
* Decode SECINFO_NO_NAME response
*/
static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
struct nfs4_secinfo_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putrootfh(xdr);
if (status)
goto out;
status = decode_secinfo_no_name(xdr, res);
out:
return status;
}
/*
* Decode TEST_STATEID response
*/
static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
struct nfs41_test_stateid_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_test_stateid(xdr, res);
out:
return status;
}
/*
* Decode FREE_STATEID response
*/
static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
struct nfs41_free_stateid_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_free_stateid(xdr, res);
out:
return status;
}
#endif /* CONFIG_NFS_V4_1 */
/**
* nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
* the local page cache.
* @xdr: XDR stream where entry resides
* @entry: buffer to fill in with entry data
* @plus: boolean indicating whether this should be a readdirplus entry
*
* Returns zero if successful, otherwise a negative errno value is
* returned.
*
* This function is not invoked during READDIR reply decoding, but
* rather whenever an application invokes the getdents(2) system call
* on a directory already in our cache.
*/
int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
int plus)
{
unsigned int savep;
uint32_t bitmap[3] = {0};
uint32_t len;
__be32 *p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
if (*p == xdr_zero) {
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
if (*p == xdr_zero)
return -EAGAIN;
entry->eof = 1;
return -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 = be32_to_cpup(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, &savep) < 0)
goto out_overflow;
if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
NULL, entry->label, entry->server) < 0)
goto out_overflow;
if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
entry->ino = entry->fattr->mounted_on_fileid;
else if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
entry->ino = entry->fattr->fileid;
entry->d_type = DT_UNKNOWN;
if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EAGAIN;
}
/*
* 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_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 },
{ -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;
}
#ifdef CONFIG_NFS_V4_2
#include "nfs42xdr.c"
#endif /* CONFIG_NFS_V4_2 */
#define PROC(proc, argtype, restype) \
[NFSPROC4_CLNT_##proc] = { \
.p_proc = NFSPROC4_COMPOUND, \
.p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
.p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
.p_arglen = NFS4_##argtype##_sz, \
.p_replen = NFS4_##restype##_sz, \
.p_statidx = NFSPROC4_CLNT_##proc, \
.p_name = #proc, \
}
#define STUB(proc) \
[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),
PROC(SECINFO, enc_secinfo, dec_secinfo),
PROC(FSID_PRESENT, enc_fsid_present, dec_fsid_present),
#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),
PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
PROC(LAYOUTCOMMIT, enc_layoutcommit, dec_layoutcommit),
PROC(LAYOUTRETURN, enc_layoutreturn, dec_layoutreturn),
PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
STUB(GETDEVICELIST),
PROC(BIND_CONN_TO_SESSION,
enc_bind_conn_to_session, dec_bind_conn_to_session),
PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
#endif /* CONFIG_NFS_V4_1 */
#ifdef CONFIG_NFS_V4_2
PROC(SEEK, enc_seek, dec_seek),
PROC(ALLOCATE, enc_allocate, dec_allocate),
PROC(DEALLOCATE, enc_deallocate, dec_deallocate),
PROC(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
PROC(CLONE, enc_clone, dec_clone),
PROC(COPY, enc_copy, dec_copy),
#endif /* CONFIG_NFS_V4_2 */
};
const struct rpc_version nfs_version4 = {
.number = 4,
.nrprocs = ARRAY_SIZE(nfs4_procedures),
.procs = nfs4_procedures
};
/*
* Local variables:
* c-basic-offset: 8
* End:
*/
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