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97d312d037
kernel-ark/fs/nfs/nfs4xdr.c
Manoj Naik 97d312d037 [PATCH] NFSv4: add support for rdattr_error in NFSv4 readdir requests. 
Request RDATTR_ERROR as an attribute in readdir to distinguish between a
 directory being within an absent filesystem or one (or more) of its entries.

 Signed-off-by: Manoj Naik <manoj@almaden.ibm.com>
 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-06-22 16:07:43 -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/slab.h>
#include <linux/utsname.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/in.h>
#include <linux/pagemap.h>
#include <linux/proc_fs.h>
#include <linux/kdev_t.h>
#include <linux/sunrpc/clnt.h>
#include <linux/nfs.h>
#include <linux/nfs4.h>
#include <linux/nfs_fs.h>
#include <linux/nfs_idmap.h>
#include "nfs4_fs.h"
#define NFSDBG_FACILITY NFSDBG_XDR
/* Mapping from NFS error code to "errno" error code. */
#define errno_NFSERR_IO EIO
static int nfs_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 1 (u32) out of (NFS4_OPAQUE_LIMIT >> 2)
*/
#define owner_id_maxsz (1 + 1)
#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_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
(NFS4_FHSIZE >> 2))
#define decode_putfh_maxsz (op_decode_hdr_maxsz)
#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
#define encode_getfh_maxsz (op_encode_hdr_maxsz)
#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
((3+NFS4_FHSIZE) >> 2))
#define nfs4_fattr_bitmap_maxsz 3
#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
/* 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 + 2 * nfs4_name_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_savefh_maxsz (op_encode_hdr_maxsz)
#define decode_savefh_maxsz (op_decode_hdr_maxsz)
#define encode_fsinfo_maxsz (op_encode_hdr_maxsz + 2)
#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
#define decode_renew_maxsz (op_decode_hdr_maxsz)
#define encode_setclientid_maxsz \
(op_encode_hdr_maxsz + \
4 /*server->ip_addr*/ + \
1 /*Netid*/ + \
6 /*uaddr*/ + \
6 + (NFS4_VERIFIER_SIZE >> 2))
#define decode_setclientid_maxsz \
(op_decode_hdr_maxsz + \
2 + \
1024) /* large value for CLID_INUSE */
#define encode_setclientid_confirm_maxsz \
(op_encode_hdr_maxsz + \
3 + (NFS4_VERIFIER_SIZE >> 2))
#define decode_setclientid_confirm_maxsz \
(op_decode_hdr_maxsz)
#define encode_lookup_maxsz (op_encode_hdr_maxsz + \
1 + ((3 + NFS4_FHSIZE) >> 2))
#define encode_remove_maxsz (op_encode_hdr_maxsz + \
nfs4_name_maxsz)
#define encode_rename_maxsz (op_encode_hdr_maxsz + \
2 * nfs4_name_maxsz)
#define decode_rename_maxsz (op_decode_hdr_maxsz + 5 + 5)
#define encode_link_maxsz (op_encode_hdr_maxsz + \
nfs4_name_maxsz)
#define decode_link_maxsz (op_decode_hdr_maxsz + 5)
#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
1 + nfs4_name_maxsz + \
nfs4_path_maxsz + \
nfs4_fattr_maxsz)
#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
#define encode_create_maxsz (op_encode_hdr_maxsz + \
2 + nfs4_name_maxsz + \
nfs4_fattr_maxsz)
#define decode_create_maxsz (op_decode_hdr_maxsz + 8)
#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
op_encode_hdr_maxsz + 7)
#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
op_decode_hdr_maxsz + 2)
#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
op_encode_hdr_maxsz)
#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
op_decode_hdr_maxsz)
#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
op_encode_hdr_maxsz + 9)
#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
op_decode_hdr_maxsz + 2)
#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
op_encode_hdr_maxsz + 8)
#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
op_decode_hdr_maxsz + 4)
#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
op_encode_hdr_maxsz + 3)
#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
op_decode_hdr_maxsz + 2)
#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
op_encode_hdr_maxsz + \
13 + 3 + 2 + 64 + \
encode_getattr_maxsz + \
encode_getfh_maxsz)
#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
op_decode_hdr_maxsz + 4 + 5 + 2 + 3 + \
decode_getattr_maxsz + \
decode_getfh_maxsz)
#define NFS4_enc_open_confirm_sz \
(compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
op_encode_hdr_maxsz + 5)
#define NFS4_dec_open_confirm_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
op_decode_hdr_maxsz + 4)
#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
op_encode_hdr_maxsz + \
11)
#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
op_decode_hdr_maxsz + \
4 + 5 + 2 + 3)
#define NFS4_enc_open_downgrade_sz \
(compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
op_encode_hdr_maxsz + 7)
#define NFS4_dec_open_downgrade_sz \
(compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
op_decode_hdr_maxsz + 4)
#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
op_encode_hdr_maxsz + 5)
#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
op_decode_hdr_maxsz + 4)
#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
op_encode_hdr_maxsz + 4 + \
nfs4_fattr_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
op_decode_hdr_maxsz + 3)
#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_fsinfo_maxsz)
#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_fsinfo_maxsz)
#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
encode_renew_maxsz)
#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
decode_renew_maxsz)
#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
encode_setclientid_maxsz)
#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
decode_setclientid_maxsz)
#define NFS4_enc_setclientid_confirm_sz \
(compound_encode_hdr_maxsz + \
encode_setclientid_confirm_maxsz + \
encode_putrootfh_maxsz + \
encode_fsinfo_maxsz)
#define NFS4_dec_setclientid_confirm_sz \
(compound_decode_hdr_maxsz + \
decode_setclientid_confirm_maxsz + \
decode_putrootfh_maxsz + \
decode_fsinfo_maxsz)
#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_getattr_maxsz + \
op_encode_hdr_maxsz + \
1 + 1 + 2 + 2 + \
1 + 4 + 1 + 2 + \
owner_id_maxsz)
#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_getattr_maxsz + \
op_decode_hdr_maxsz + \
2 + 2 + 1 + 2 + \
owner_id_maxsz)
#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_getattr_maxsz + \
op_encode_hdr_maxsz + \
1 + 2 + 2 + 2 + \
owner_id_maxsz)
#define NFS4_dec_lockt_sz (NFS4_dec_lock_sz)
#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_getattr_maxsz + \
op_encode_hdr_maxsz + \
1 + 1 + 4 + 2 + 2)
#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_getattr_maxsz + \
op_decode_hdr_maxsz + 4)
#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
op_encode_hdr_maxsz + 1)
#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
op_decode_hdr_maxsz + 2)
#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_lookup_maxsz + \
encode_getattr_maxsz + \
encode_getfh_maxsz)
#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
op_decode_hdr_maxsz + \
decode_getattr_maxsz + \
decode_getfh_maxsz)
#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
encode_putrootfh_maxsz + \
encode_getattr_maxsz + \
encode_getfh_maxsz)
#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
decode_putrootfh_maxsz + \
decode_getattr_maxsz + \
decode_getfh_maxsz)
#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_remove_maxsz)
#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
op_decode_hdr_maxsz + 5)
#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_savefh_maxsz + \
encode_putfh_maxsz + \
encode_rename_maxsz)
#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_savefh_maxsz + \
decode_putfh_maxsz + \
decode_rename_maxsz)
#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_savefh_maxsz + \
encode_putfh_maxsz + \
encode_link_maxsz)
#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_savefh_maxsz + \
decode_putfh_maxsz + \
decode_link_maxsz)
#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_symlink_maxsz + \
encode_getattr_maxsz + \
encode_getfh_maxsz)
#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_symlink_maxsz + \
decode_getattr_maxsz + \
decode_getfh_maxsz)
#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_create_maxsz + \
encode_getattr_maxsz + \
encode_getfh_maxsz)
#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_create_maxsz + \
decode_getattr_maxsz + \
decode_getfh_maxsz)
#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
op_decode_hdr_maxsz + 12)
#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_delegreturn_maxsz)
#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
decode_delegreturn_maxsz)
#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
op_decode_hdr_maxsz + \
nfs4_fattr_bitmap_maxsz + 1)
#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
op_encode_hdr_maxsz + 4 + \
nfs4_fattr_bitmap_maxsz + 1)
#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
static struct {
unsigned int mode;
unsigned int nfs2type;
} nfs_type2fmt[] = {
{ 0, NFNON },
{ S_IFREG, NFREG },
{ S_IFDIR, NFDIR },
{ S_IFBLK, NFBLK },
{ S_IFCHR, NFCHR },
{ S_IFLNK, NFLNK },
{ S_IFSOCK, NFSOCK },
{ S_IFIFO, NFFIFO },
{ 0, NFNON },
{ 0, NFNON },
};
struct compound_hdr {
int32_t status;
uint32_t nops;
uint32_t taglen;
char * tag;
};
/*
* START OF "GENERIC" ENCODE ROUTINES.
* These may look a little ugly since they are imported from a "generic"
* set of XDR encode/decode routines which are intended to be shared by
* all of our NFSv4 implementations (OpenBSD, MacOS X...).
*
* If the pain of reading these is too great, it should be a straightforward
* task to translate them into Linux-specific versions which are more
* consistent with the style used in NFSv2/v3...
*/
#define WRITE32(n) *p++ = htonl(n)
#define WRITE64(n) do { \
*p++ = htonl((uint32_t)((n) >> 32)); \
*p++ = htonl((uint32_t)(n)); \
} while (0)
#define WRITEMEM(ptr,nbytes) do { \
p = xdr_encode_opaque_fixed(p, ptr, nbytes); \
} while (0)
#define RESERVE_SPACE(nbytes) do { \
p = xdr_reserve_space(xdr, nbytes); \
if (!p) printk("RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __FUNCTION__); \
BUG_ON(!p); \
} while (0)
static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
{
uint32_t *p;
p = xdr_reserve_space(xdr, 4 + len);
BUG_ON(p == NULL);
xdr_encode_opaque(p, str, len);
}
static int encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
{
uint32_t *p;
dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
WRITE32(hdr->taglen);
WRITEMEM(hdr->tag, hdr->taglen);
WRITE32(NFS4_MINOR_VERSION);
WRITE32(hdr->nops);
return 0;
}
static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
{
uint32_t *p;
p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
BUG_ON(p == NULL);
xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
}
static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
{
char owner_name[IDMAP_NAMESZ];
char owner_group[IDMAP_NAMESZ];
int owner_namelen = 0;
int owner_grouplen = 0;
uint32_t *p;
uint32_t *q;
int len;
uint32_t bmval0 = 0;
uint32_t bmval1 = 0;
int status;
/*
* We reserve enough space to write the entire attribute buffer at once.
* In the worst-case, this would be
* 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
* = 36 bytes, plus any contribution from variable-length fields
* such as owner/group.
*/
len = 16;
/* Sigh */
if (iap->ia_valid & ATTR_SIZE)
len += 8;
if (iap->ia_valid & ATTR_MODE)
len += 4;
if (iap->ia_valid & ATTR_UID) {
owner_namelen = nfs_map_uid_to_name(server->nfs4_state, iap->ia_uid, owner_name);
if (owner_namelen < 0) {
printk(KERN_WARNING "nfs: couldn't resolve uid %d to string\n",
iap->ia_uid);
/* XXX */
strcpy(owner_name, "nobody");
owner_namelen = sizeof("nobody") - 1;
/* goto out; */
}
len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
}
if (iap->ia_valid & ATTR_GID) {
owner_grouplen = nfs_map_gid_to_group(server->nfs4_state, iap->ia_gid, owner_group);
if (owner_grouplen < 0) {
printk(KERN_WARNING "nfs4: couldn't resolve gid %d to string\n",
iap->ia_gid);
strcpy(owner_group, "nobody");
owner_grouplen = sizeof("nobody") - 1;
/* goto out; */
}
len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
}
if (iap->ia_valid & ATTR_ATIME_SET)
len += 16;
else if (iap->ia_valid & ATTR_ATIME)
len += 4;
if (iap->ia_valid & ATTR_MTIME_SET)
len += 16;
else if (iap->ia_valid & ATTR_MTIME)
len += 4;
RESERVE_SPACE(len);
/*
* We write the bitmap length now, but leave the bitmap and the attribute
* buffer length to be backfilled at the end of this routine.
*/
WRITE32(2);
q = p;
p += 3;
if (iap->ia_valid & ATTR_SIZE) {
bmval0 |= FATTR4_WORD0_SIZE;
WRITE64(iap->ia_size);
}
if (iap->ia_valid & ATTR_MODE) {
bmval1 |= FATTR4_WORD1_MODE;
WRITE32(iap->ia_mode);
}
if (iap->ia_valid & ATTR_UID) {
bmval1 |= FATTR4_WORD1_OWNER;
WRITE32(owner_namelen);
WRITEMEM(owner_name, owner_namelen);
}
if (iap->ia_valid & ATTR_GID) {
bmval1 |= FATTR4_WORD1_OWNER_GROUP;
WRITE32(owner_grouplen);
WRITEMEM(owner_group, owner_grouplen);
}
if (iap->ia_valid & ATTR_ATIME_SET) {
bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
WRITE32(NFS4_SET_TO_CLIENT_TIME);
WRITE32(0);
WRITE32(iap->ia_mtime.tv_sec);
WRITE32(iap->ia_mtime.tv_nsec);
}
else if (iap->ia_valid & ATTR_ATIME) {
bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
WRITE32(NFS4_SET_TO_SERVER_TIME);
}
if (iap->ia_valid & ATTR_MTIME_SET) {
bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
WRITE32(NFS4_SET_TO_CLIENT_TIME);
WRITE32(0);
WRITE32(iap->ia_mtime.tv_sec);
WRITE32(iap->ia_mtime.tv_nsec);
}
else if (iap->ia_valid & ATTR_MTIME) {
bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
WRITE32(NFS4_SET_TO_SERVER_TIME);
}
/*
* Now we backfill the bitmap and the attribute buffer length.
*/
if (len != ((char *)p - (char *)q) + 4) {
printk ("encode_attr: Attr length calculation error! %u != %Zu\n",
len, ((char *)p - (char *)q) + 4);
BUG();
}
len = (char *)p - (char *)q - 12;
*q++ = htonl(bmval0);
*q++ = htonl(bmval1);
*q++ = htonl(len);
status = 0;
/* out: */
return status;
}
static int encode_access(struct xdr_stream *xdr, u32 access)
{
uint32_t *p;
RESERVE_SPACE(8);
WRITE32(OP_ACCESS);
WRITE32(access);
return 0;
}
static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
{
uint32_t *p;
RESERVE_SPACE(8+sizeof(arg->stateid.data));
WRITE32(OP_CLOSE);
WRITE32(arg->seqid);
WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
return 0;
}
static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args)
{
uint32_t *p;
RESERVE_SPACE(16);
WRITE32(OP_COMMIT);
WRITE64(args->offset);
WRITE32(args->count);
return 0;
}
static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create)
{
uint32_t *p;
RESERVE_SPACE(8);
WRITE32(OP_CREATE);
WRITE32(create->ftype);
switch (create->ftype) {
case NF4LNK:
RESERVE_SPACE(4 + create->u.symlink->len);
WRITE32(create->u.symlink->len);
WRITEMEM(create->u.symlink->name, create->u.symlink->len);
break;
case NF4BLK: case NF4CHR:
RESERVE_SPACE(8);
WRITE32(create->u.device.specdata1);
WRITE32(create->u.device.specdata2);
break;
default:
break;
}
RESERVE_SPACE(4 + create->name->len);
WRITE32(create->name->len);
WRITEMEM(create->name->name, create->name->len);
return encode_attrs(xdr, create->attrs, create->server);
}
static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap)
{
uint32_t *p;
RESERVE_SPACE(12);
WRITE32(OP_GETATTR);
WRITE32(1);
WRITE32(bitmap);
return 0;
}
static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1)
{
uint32_t *p;
RESERVE_SPACE(16);
WRITE32(OP_GETATTR);
WRITE32(2);
WRITE32(bm0);
WRITE32(bm1);
return 0;
}
static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
{
return encode_getattr_two(xdr,
bitmask[0] & nfs4_fattr_bitmap[0],
bitmask[1] & nfs4_fattr_bitmap[1]);
}
static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask)
{
return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
bitmask[1] & nfs4_fsinfo_bitmap[1]);
}
static int encode_getfh(struct xdr_stream *xdr)
{
uint32_t *p;
RESERVE_SPACE(4);
WRITE32(OP_GETFH);
return 0;
}
static int encode_link(struct xdr_stream *xdr, const struct qstr *name)
{
uint32_t *p;
RESERVE_SPACE(8 + name->len);
WRITE32(OP_LINK);
WRITE32(name->len);
WRITEMEM(name->name, name->len);
return 0;
}
/*
* opcode,type,reclaim,offset,length,new_lock_owner = 32
* open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
*/
static int encode_lock(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
{
uint32_t *p;
struct nfs_lock_opargs *opargs = arg->u.lock;
RESERVE_SPACE(32);
WRITE32(OP_LOCK);
WRITE32(arg->type);
WRITE32(opargs->reclaim);
WRITE64(arg->offset);
WRITE64(arg->length);
WRITE32(opargs->new_lock_owner);
if (opargs->new_lock_owner){
struct nfs_open_to_lock *ol = opargs->u.open_lock;
RESERVE_SPACE(40);
WRITE32(ol->open_seqid);
WRITEMEM(&ol->open_stateid, sizeof(ol->open_stateid));
WRITE32(ol->lock_seqid);
WRITE64(ol->lock_owner.clientid);
WRITE32(4);
WRITE32(ol->lock_owner.id);
}
else {
struct nfs_exist_lock *el = opargs->u.exist_lock;
RESERVE_SPACE(20);
WRITEMEM(&el->stateid, sizeof(el->stateid));
WRITE32(el->seqid);
}
return 0;
}
static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
{
uint32_t *p;
struct nfs_lowner *opargs = arg->u.lockt;
RESERVE_SPACE(40);
WRITE32(OP_LOCKT);
WRITE32(arg->type);
WRITE64(arg->offset);
WRITE64(arg->length);
WRITE64(opargs->clientid);
WRITE32(4);
WRITE32(opargs->id);
return 0;
}
static int encode_locku(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
{
uint32_t *p;
struct nfs_locku_opargs *opargs = arg->u.locku;
RESERVE_SPACE(44);
WRITE32(OP_LOCKU);
WRITE32(arg->type);
WRITE32(opargs->seqid);
WRITEMEM(&opargs->stateid, sizeof(opargs->stateid));
WRITE64(arg->offset);
WRITE64(arg->length);
return 0;
}
static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
{
int len = name->len;
uint32_t *p;
RESERVE_SPACE(8 + len);
WRITE32(OP_LOOKUP);
WRITE32(len);
WRITEMEM(name->name, len);
return 0;
}
static void encode_share_access(struct xdr_stream *xdr, int open_flags)
{
uint32_t *p;
RESERVE_SPACE(8);
switch (open_flags & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ:
WRITE32(NFS4_SHARE_ACCESS_READ);
break;
case FMODE_WRITE:
WRITE32(NFS4_SHARE_ACCESS_WRITE);
break;
case FMODE_READ|FMODE_WRITE:
WRITE32(NFS4_SHARE_ACCESS_BOTH);
break;
default:
BUG();
}
WRITE32(0); /* for linux, share_deny = 0 always */
}
static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
{
uint32_t *p;
/*
* opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
* owner 4 = 32
*/
RESERVE_SPACE(8);
WRITE32(OP_OPEN);
WRITE32(arg->seqid);
encode_share_access(xdr, arg->open_flags);
RESERVE_SPACE(16);
WRITE64(arg->clientid);
WRITE32(4);
WRITE32(arg->id);
}
static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
{
uint32_t *p;
RESERVE_SPACE(4);
switch(arg->open_flags & O_EXCL) {
case 0:
WRITE32(NFS4_CREATE_UNCHECKED);
encode_attrs(xdr, arg->u.attrs, arg->server);
break;
default:
WRITE32(NFS4_CREATE_EXCLUSIVE);
encode_nfs4_verifier(xdr, &arg->u.verifier);
}
}
static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
{
uint32_t *p;
RESERVE_SPACE(4);
switch (arg->open_flags & O_CREAT) {
case 0:
WRITE32(NFS4_OPEN_NOCREATE);
break;
default:
BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
WRITE32(NFS4_OPEN_CREATE);
encode_createmode(xdr, arg);
}
}
static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type)
{
uint32_t *p;
RESERVE_SPACE(4);
switch (delegation_type) {
case 0:
WRITE32(NFS4_OPEN_DELEGATE_NONE);
break;
case FMODE_READ:
WRITE32(NFS4_OPEN_DELEGATE_READ);
break;
case FMODE_WRITE|FMODE_READ:
WRITE32(NFS4_OPEN_DELEGATE_WRITE);
break;
default:
BUG();
}
}
static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
{
uint32_t *p;
RESERVE_SPACE(4);
WRITE32(NFS4_OPEN_CLAIM_NULL);
encode_string(xdr, name->len, name->name);
}
static inline void encode_claim_previous(struct xdr_stream *xdr, int type)
{
uint32_t *p;
RESERVE_SPACE(4);
WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
encode_delegation_type(xdr, type);
}
static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
{
uint32_t *p;
RESERVE_SPACE(4+sizeof(stateid->data));
WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
WRITEMEM(stateid->data, sizeof(stateid->data));
encode_string(xdr, name->len, name->name);
}
static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg)
{
encode_openhdr(xdr, arg);
encode_opentype(xdr, arg);
switch (arg->claim) {
case NFS4_OPEN_CLAIM_NULL:
encode_claim_null(xdr, arg->name);
break;
case NFS4_OPEN_CLAIM_PREVIOUS:
encode_claim_previous(xdr, arg->u.delegation_type);
break;
case NFS4_OPEN_CLAIM_DELEGATE_CUR:
encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
break;
default:
BUG();
}
return 0;
}
static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg)
{
uint32_t *p;
RESERVE_SPACE(8+sizeof(arg->stateid.data));
WRITE32(OP_OPEN_CONFIRM);
WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
WRITE32(arg->seqid);
return 0;
}
static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
{
uint32_t *p;
RESERVE_SPACE(8+sizeof(arg->stateid.data));
WRITE32(OP_OPEN_DOWNGRADE);
WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
WRITE32(arg->seqid);
encode_share_access(xdr, arg->open_flags);
return 0;
}
static int
encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh)
{
int len = fh->size;
uint32_t *p;
RESERVE_SPACE(8 + len);
WRITE32(OP_PUTFH);
WRITE32(len);
WRITEMEM(fh->data, len);
return 0;
}
static int encode_putrootfh(struct xdr_stream *xdr)
{
uint32_t *p;
RESERVE_SPACE(4);
WRITE32(OP_PUTROOTFH);
return 0;
}
static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
{
nfs4_stateid stateid;
uint32_t *p;
RESERVE_SPACE(16);
if (ctx->state != NULL) {
nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
WRITEMEM(stateid.data, sizeof(stateid.data));
} else
WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
}
static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
{
uint32_t *p;
RESERVE_SPACE(4);
WRITE32(OP_READ);
encode_stateid(xdr, args->context);
RESERVE_SPACE(12);
WRITE64(args->offset);
WRITE32(args->count);
return 0;
}
static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
{
struct rpc_auth *auth = req->rq_task->tk_auth;
uint32_t attrs[2] = {
FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
FATTR4_WORD1_MOUNTED_ON_FILEID,
};
int replen;
uint32_t *p;
RESERVE_SPACE(32+sizeof(nfs4_verifier));
WRITE32(OP_READDIR);
WRITE64(readdir->cookie);
WRITEMEM(readdir->verifier.data, sizeof(readdir->verifier.data));
WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
WRITE32(readdir->count);
WRITE32(2);
/* Switch to mounted_on_fileid if the server supports it */
if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
attrs[0] &= ~FATTR4_WORD0_FILEID;
else
attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
WRITE32(attrs[0] & readdir->bitmask[0]);
WRITE32(attrs[1] & readdir->bitmask[1]);
/* set up reply kvec
* toplevel_status + taglen + rescount + OP_PUTFH + status
* + OP_READDIR + status + verifer(2) = 9
*/
replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2;
xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
readdir->pgbase, readdir->count);
return 0;
}
static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
{
struct rpc_auth *auth = req->rq_task->tk_auth;
unsigned int replen;
uint32_t *p;
RESERVE_SPACE(4);
WRITE32(OP_READLINK);
/* set up reply kvec
* toplevel_status + taglen + rescount + OP_PUTFH + status
* + OP_READLINK + status + string length = 8
*/
replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2;
xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages,
readlink->pgbase, readlink->pglen);
return 0;
}
static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
{
uint32_t *p;
RESERVE_SPACE(8 + name->len);
WRITE32(OP_REMOVE);
WRITE32(name->len);
WRITEMEM(name->name, name->len);
return 0;
}
static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname)
{
uint32_t *p;
RESERVE_SPACE(8 + oldname->len);
WRITE32(OP_RENAME);
WRITE32(oldname->len);
WRITEMEM(oldname->name, oldname->len);
RESERVE_SPACE(4 + newname->len);
WRITE32(newname->len);
WRITEMEM(newname->name, newname->len);
return 0;
}
static int encode_renew(struct xdr_stream *xdr, const struct nfs4_client *client_stateid)
{
uint32_t *p;
RESERVE_SPACE(12);
WRITE32(OP_RENEW);
WRITE64(client_stateid->cl_clientid);
return 0;
}
static int
encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg)
{
uint32_t *p;
RESERVE_SPACE(4+sizeof(zero_stateid.data));
WRITE32(OP_SETATTR);
WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
RESERVE_SPACE(2*4);
WRITE32(1);
WRITE32(FATTR4_WORD0_ACL);
if (arg->acl_len % 4)
return -EINVAL;
RESERVE_SPACE(4);
WRITE32(arg->acl_len);
xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
return 0;
}
static int
encode_savefh(struct xdr_stream *xdr)
{
uint32_t *p;
RESERVE_SPACE(4);
WRITE32(OP_SAVEFH);
return 0;
}
static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server)
{
int status;
uint32_t *p;
RESERVE_SPACE(4+sizeof(arg->stateid.data));
WRITE32(OP_SETATTR);
WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
if ((status = encode_attrs(xdr, arg->iap, server)))
return status;
return 0;
}
static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid)
{
uint32_t *p;
RESERVE_SPACE(4 + sizeof(setclientid->sc_verifier->data));
WRITE32(OP_SETCLIENTID);
WRITEMEM(setclientid->sc_verifier->data, sizeof(setclientid->sc_verifier->data));
encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
RESERVE_SPACE(4);
WRITE32(setclientid->sc_prog);
encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
RESERVE_SPACE(4);
WRITE32(setclientid->sc_cb_ident);
return 0;
}
static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_client *client_state)
{
uint32_t *p;
RESERVE_SPACE(12 + sizeof(client_state->cl_confirm.data));
WRITE32(OP_SETCLIENTID_CONFIRM);
WRITE64(client_state->cl_clientid);
WRITEMEM(client_state->cl_confirm.data, sizeof(client_state->cl_confirm.data));
return 0;
}
static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
{
uint32_t *p;
RESERVE_SPACE(4);
WRITE32(OP_WRITE);
encode_stateid(xdr, args->context);
RESERVE_SPACE(16);
WRITE64(args->offset);
WRITE32(args->stable);
WRITE32(args->count);
xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
return 0;
}
static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid)
{
uint32_t *p;
RESERVE_SPACE(20);
WRITE32(OP_DELEGRETURN);
WRITEMEM(stateid->data, sizeof(stateid->data));
return 0;
}
/*
* END OF "GENERIC" ENCODE ROUTINES.
*/
/*
* Encode an ACCESS request
*/
static int nfs4_xdr_enc_access(struct rpc_rqst *req, uint32_t *p, const struct nfs4_accessargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
if ((status = encode_putfh(&xdr, args->fh)) == 0)
status = encode_access(&xdr, args->access);
return status;
}
/*
* Encode LOOKUP request
*/
static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 4,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
goto out;
if ((status = encode_lookup(&xdr, args->name)) != 0)
goto out;
if ((status = encode_getfh(&xdr)) != 0)
goto out;
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* Encode LOOKUP_ROOT request
*/
static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_root_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 3,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
if ((status = encode_putrootfh(&xdr)) != 0)
goto out;
if ((status = encode_getfh(&xdr)) == 0)
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* Encode REMOVE request
*/
static int nfs4_xdr_enc_remove(struct rpc_rqst *req, uint32_t *p, const struct nfs4_remove_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
if ((status = encode_putfh(&xdr, args->fh)) == 0)
status = encode_remove(&xdr, args->name);
return status;
}
/*
* Encode RENAME request
*/
static int nfs4_xdr_enc_rename(struct rpc_rqst *req, uint32_t *p, const struct nfs4_rename_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 4,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
if ((status = encode_putfh(&xdr, args->old_dir)) != 0)
goto out;
if ((status = encode_savefh(&xdr)) != 0)
goto out;
if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
goto out;
status = encode_rename(&xdr, args->old_name, args->new_name);
out:
return status;
}
/*
* Encode LINK request
*/
static int nfs4_xdr_enc_link(struct rpc_rqst *req, uint32_t *p, const struct nfs4_link_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 4,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
if ((status = encode_putfh(&xdr, args->fh)) != 0)
goto out;
if ((status = encode_savefh(&xdr)) != 0)
goto out;
if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
goto out;
status = encode_link(&xdr, args->name);
out:
return status;
}
/*
* Encode CREATE request
*/
static int nfs4_xdr_enc_create(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 4,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
goto out;
if ((status = encode_create(&xdr, args)) != 0)
goto out;
if ((status = encode_getfh(&xdr)) != 0)
goto out;
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* Encode SYMLINK request
*/
static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
{
return nfs4_xdr_enc_create(req, p, args);
}
/*
* Encode GETATTR request
*/
static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, uint32_t *p, const struct nfs4_getattr_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
if ((status = encode_putfh(&xdr, args->fh)) == 0)
status = encode_getfattr(&xdr, args->bitmask);
return status;
}
/*
* Encode a CLOSE request
*/
static int nfs4_xdr_enc_close(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if(status)
goto out;
status = encode_close(&xdr, args);
out:
return status;
}
/*
* Encode an OPEN request
*/
static int nfs4_xdr_enc_open(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 4,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (status)
goto out;
status = encode_open(&xdr, args);
if (status)
goto out;
status = encode_getfh(&xdr);
if (status)
goto out;
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* Encode an OPEN_CONFIRM request
*/
static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_open_confirmargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if(status)
goto out;
status = encode_open_confirm(&xdr, args);
out:
return status;
}
/*
* Encode an OPEN request with no attributes.
*/
static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (status)
goto out;
status = encode_open(&xdr, args);
out:
return status;
}
/*
* Encode an OPEN_DOWNGRADE request
*/
static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (status)
goto out;
status = encode_open_downgrade(&xdr, args);
out:
return status;
}
/*
* Encode a LOCK request
*/
static int nfs4_xdr_enc_lock(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if(status)
goto out;
status = encode_lock(&xdr, args);
out:
return status;
}
/*
* Encode a LOCKT request
*/
static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if(status)
goto out;
status = encode_lockt(&xdr, args);
out:
return status;
}
/*
* Encode a LOCKU request
*/
static int nfs4_xdr_enc_locku(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if(status)
goto out;
status = encode_locku(&xdr, args);
out:
return status;
}
/*
* Encode a READLINK request
*/
static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readlink *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if(status)
goto out;
status = encode_readlink(&xdr, args, req);
out:
return status;
}
/*
* Encode a READDIR request
*/
static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readdir_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if(status)
goto out;
status = encode_readdir(&xdr, args, req);
out:
return status;
}
/*
* Encode a READ request
*/
static int nfs4_xdr_enc_read(struct rpc_rqst *req, uint32_t *p, struct nfs_readargs *args)
{
struct rpc_auth *auth = req->rq_task->tk_auth;
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int replen, status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (status)
goto out;
status = encode_read(&xdr, args);
if (status)
goto out;
/* set up reply kvec
* toplevel status + taglen=0 + rescount + OP_PUTFH + status
* + OP_READ + status + eof + datalen = 9
*/
replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
xdr_inline_pages(&req->rq_rcv_buf, replen,
args->pages, args->pgbase, args->count);
out:
return status;
}
/*
* Encode an SETATTR request
*/
static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, uint32_t *p, struct nfs_setattrargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 3,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if(status)
goto out;
status = encode_setattr(&xdr, args, args->server);
if(status)
goto out;
status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
/*
* Encode a GETACL request
*/
static int
nfs4_xdr_enc_getacl(struct rpc_rqst *req, uint32_t *p,
struct nfs_getaclargs *args)
{
struct xdr_stream xdr;
struct rpc_auth *auth = req->rq_task->tk_auth;
struct compound_hdr hdr = {
.nops = 2,
};
int replen, status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (status)
goto out;
status = encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0);
/* set up reply buffer: */
replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
xdr_inline_pages(&req->rq_rcv_buf, replen,
args->acl_pages, args->acl_pgbase, args->acl_len);
out:
return status;
}
/*
* Encode a WRITE request
*/
static int nfs4_xdr_enc_write(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (status)
goto out;
status = encode_write(&xdr, args);
out:
return status;
}
/*
* a COMMIT request
*/
static int nfs4_xdr_enc_commit(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (status)
goto out;
status = encode_commit(&xdr, args);
out:
return status;
}
/*
* FSINFO request
*/
static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs4_fsinfo_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (!status)
status = encode_fsinfo(&xdr, args->bitmask);
return status;
}
/*
* a PATHCONF request
*/
static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct nfs4_pathconf_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (!status)
status = encode_getattr_one(&xdr,
args->bitmask[0] & nfs4_pathconf_bitmap[0]);
return status;
}
/*
* a STATFS request
*/
static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, uint32_t *p, const struct nfs4_statfs_arg *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (status == 0)
status = encode_getattr_two(&xdr,
args->bitmask[0] & nfs4_statfs_bitmap[0],
args->bitmask[1] & nfs4_statfs_bitmap[1]);
return status;
}
/*
* GETATTR_BITMAP request
*/
static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, uint32_t *p, const struct nfs_fh *fhandle)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, fhandle);
if (status == 0)
status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
FATTR4_WORD0_LINK_SUPPORT|
FATTR4_WORD0_SYMLINK_SUPPORT|
FATTR4_WORD0_ACLSUPPORT);
return status;
}
/*
* a RENEW request
*/
static int nfs4_xdr_enc_renew(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 1,
};
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
return encode_renew(&xdr, clp);
}
/*
* a SETCLIENTID request
*/
static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, uint32_t *p, struct nfs4_setclientid *sc)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 1,
};
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
return encode_setclientid(&xdr, sc);
}
/*
* a SETCLIENTID_CONFIRM request
*/
static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 3,
};
const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_setclientid_confirm(&xdr, clp);
if (!status)
status = encode_putrootfh(&xdr);
if (!status)
status = encode_fsinfo(&xdr, lease_bitmap);
return status;
}
/*
* DELEGRETURN request
*/
static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, uint32_t *p, const struct nfs4_delegreturnargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
if ((status = encode_putfh(&xdr, args->fhandle)) == 0)
status = encode_delegreturn(&xdr, args->stateid);
return status;
}
/*
* START OF "GENERIC" DECODE ROUTINES.
* These may look a little ugly since they are imported from a "generic"
* set of XDR encode/decode routines which are intended to be shared by
* all of our NFSv4 implementations (OpenBSD, MacOS X...).
*
* If the pain of reading these is too great, it should be a straightforward
* task to translate them into Linux-specific versions which are more
* consistent with the style used in NFSv2/v3...
*/
#define READ32(x) (x) = ntohl(*p++)
#define READ64(x) do { \
(x) = (u64)ntohl(*p++) << 32; \
(x) |= ntohl(*p++); \
} while (0)
#define READTIME(x) do { \
p++; \
(x.tv_sec) = ntohl(*p++); \
(x.tv_nsec) = ntohl(*p++); \
} while (0)
#define COPYMEM(x,nbytes) do { \
memcpy((x), p, nbytes); \
p += XDR_QUADLEN(nbytes); \
} while (0)
#define READ_BUF(nbytes) do { \
p = xdr_inline_decode(xdr, nbytes); \
if (!p) { \
printk(KERN_WARNING "%s: reply buffer overflowed in line %d.", \
__FUNCTION__, __LINE__); \
return -EIO; \
} \
} while (0)
static int decode_opaque_inline(struct xdr_stream *xdr, uint32_t *len, char **string)
{
uint32_t *p;
READ_BUF(4);
READ32(*len);
READ_BUF(*len);
*string = (char *)p;
return 0;
}
static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
{
uint32_t *p;
READ_BUF(8);
READ32(hdr->status);
READ32(hdr->taglen);
READ_BUF(hdr->taglen + 4);
hdr->tag = (char *)p;
p += XDR_QUADLEN(hdr->taglen);
READ32(hdr->nops);
return 0;
}
static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
{
uint32_t *p;
uint32_t opnum;
int32_t nfserr;
READ_BUF(8);
READ32(opnum);
if (opnum != expected) {
printk(KERN_NOTICE
"nfs4_decode_op_hdr: Server returned operation"
" %d but we issued a request for %d\n",
opnum, expected);
return -EIO;
}
READ32(nfserr);
if (nfserr != NFS_OK)
return -nfs_stat_to_errno(nfserr);
return 0;
}
/* Dummy routine */
static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs4_client *clp)
{
uint32_t *p;
uint32_t strlen;
char *str;
READ_BUF(12);
return decode_opaque_inline(xdr, &strlen, &str);
}
static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
{
uint32_t bmlen, *p;
READ_BUF(4);
READ32(bmlen);
bitmap[0] = bitmap[1] = 0;
READ_BUF((bmlen << 2));
if (bmlen > 0) {
READ32(bitmap[0]);
if (bmlen > 1)
READ32(bitmap[1]);
}
return 0;
}
static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, uint32_t **savep)
{
uint32_t *p;
READ_BUF(4);
READ32(*attrlen);
*savep = xdr->p;
return 0;
}
static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
{
if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
decode_attr_bitmap(xdr, bitmask);
bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
} else
bitmask[0] = bitmask[1] = 0;
dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]);
return 0;
}
static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
{
uint32_t *p;
*type = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
READ_BUF(4);
READ32(*type);
if (*type < NF4REG || *type > NF4NAMEDATTR) {
dprintk("%s: bad type %d\n", __FUNCTION__, *type);
return -EIO;
}
bitmap[0] &= ~FATTR4_WORD0_TYPE;
}
dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type);
return 0;
}
static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
{
uint32_t *p;
*change = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
READ_BUF(8);
READ64(*change);
bitmap[0] &= ~FATTR4_WORD0_CHANGE;
}
dprintk("%s: change attribute=%Lu\n", __FUNCTION__,
(unsigned long long)*change);
return 0;
}
static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
{
uint32_t *p;
*size = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
READ_BUF(8);
READ64(*size);
bitmap[0] &= ~FATTR4_WORD0_SIZE;
}
dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size);
return 0;
}
static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
uint32_t *p;
*res = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
READ_BUF(4);
READ32(*res);
bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
}
dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
return 0;
}
static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
uint32_t *p;
*res = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
READ_BUF(4);
READ32(*res);
bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
}
dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
return 0;
}
static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fsid *fsid)
{
uint32_t *p;
fsid->major = 0;
fsid->minor = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
READ_BUF(16);
READ64(fsid->major);
READ64(fsid->minor);
bitmap[0] &= ~FATTR4_WORD0_FSID;
}
dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__,
(unsigned long long)fsid->major,
(unsigned long long)fsid->minor);
return 0;
}
static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
uint32_t *p;
*res = 60;
if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
READ_BUF(4);
READ32(*res);
bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
}
dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res);
return 0;
}
static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
uint32_t *p;
*res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
READ_BUF(4);
READ32(*res);
bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
}
dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res);
return 0;
}
static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
{
uint32_t *p;
*fileid = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
READ_BUF(8);
READ64(*fileid);
bitmap[0] &= ~FATTR4_WORD0_FILEID;
}
dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
return 0;
}
static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
uint32_t *p;
int status = 0;
*res = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
READ_BUF(8);
READ64(*res);
bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
}
dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
return status;
}
static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
uint32_t *p;
int status = 0;
*res = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
READ_BUF(8);
READ64(*res);
bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
}
dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
return status;
}
static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
uint32_t *p;
int status = 0;
*res = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
READ_BUF(8);
READ64(*res);
bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
}
dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
return status;
}
static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
uint32_t *p;
int status = 0;
*res = 0;
if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
READ_BUF(8);
READ64(*res);
bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
}
dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res);
return status;
}
static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
{
uint32_t *p;
int status = 0;
*maxlink = 1;
if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
READ_BUF(4);
READ32(*maxlink);
bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
}
dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink);
return status;
}
static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
{
uint32_t *p;
int status = 0;
*maxname = 1024;
if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
READ_BUF(4);
READ32(*maxname);
bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
}
dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname);
return status;
}
static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
uint32_t *p;
int status = 0;
*res = 1024;
if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
uint64_t maxread;
READ_BUF(8);
READ64(maxread);
if (maxread > 0x7FFFFFFF)
maxread = 0x7FFFFFFF;
*res = (uint32_t)maxread;
bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
}
dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res);
return status;
}
static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
uint32_t *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;
READ_BUF(8);
READ64(maxwrite);
if (maxwrite > 0x7FFFFFFF)
maxwrite = 0x7FFFFFFF;
*res = (uint32_t)maxwrite;
bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
}
dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res);
return status;
}
static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
{
uint32_t *p;
*mode = 0;
if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
return -EIO;
if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
READ_BUF(4);
READ32(*mode);
*mode &= ~S_IFMT;
bitmap[1] &= ~FATTR4_WORD1_MODE;
}
dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode);
return 0;
}
static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
{
uint32_t *p;
*nlink = 1;
if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
return -EIO;
if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
READ_BUF(4);
READ32(*nlink);
bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
}
dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink);
return 0;
}
static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *uid)
{
uint32_t len, *p;
*uid = -2;
if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
return -EIO;
if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
READ_BUF(4);
READ32(len);
READ_BUF(len);
if (len < XDR_MAX_NETOBJ) {
if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
dprintk("%s: nfs_map_name_to_uid failed!\n",
__FUNCTION__);
} else
printk(KERN_WARNING "%s: name too long (%u)!\n",
__FUNCTION__, len);
bitmap[1] &= ~FATTR4_WORD1_OWNER;
}
dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid);
return 0;
}
static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *gid)
{
uint32_t len, *p;
*gid = -2;
if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
return -EIO;
if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
READ_BUF(4);
READ32(len);
READ_BUF(len);
if (len < XDR_MAX_NETOBJ) {
if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
dprintk("%s: nfs_map_group_to_gid failed!\n",
__FUNCTION__);
} else
printk(KERN_WARNING "%s: name too long (%u)!\n",
__FUNCTION__, len);
bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
}
dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid);
return 0;
}
static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
{
uint32_t major = 0, minor = 0, *p;
*rdev = MKDEV(0,0);
if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
return -EIO;
if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
dev_t tmp;
READ_BUF(8);
READ32(major);
READ32(minor);
tmp = MKDEV(major, minor);
if (MAJOR(tmp) == major && MINOR(tmp) == minor)
*rdev = tmp;
bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
}
dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor);
return 0;
}
static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
uint32_t *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)) {
READ_BUF(8);
READ64(*res);
bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
}
dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
return status;
}
static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
uint32_t *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)) {
READ_BUF(8);
READ64(*res);
bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
}
dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
return status;
}
static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
uint32_t *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)) {
READ_BUF(8);
READ64(*res);
bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
}
dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
return status;
}
static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
{
uint32_t *p;
*used = 0;
if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
return -EIO;
if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
READ_BUF(8);
READ64(*used);
bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
}
dprintk("%s: space used=%Lu\n", __FUNCTION__,
(unsigned long long)*used);
return 0;
}
static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
{
uint32_t *p;
uint64_t sec;
uint32_t nsec;
READ_BUF(12);
READ64(sec);
READ32(nsec);
time->tv_sec = (time_t)sec;
time->tv_nsec = (long)nsec;
return 0;
}
static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
{
int status = 0;
time->tv_sec = 0;
time->tv_nsec = 0;
if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
return -EIO;
if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
status = decode_attr_time(xdr, time);
bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
}
dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec);
return status;
}
static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
{
int status = 0;
time->tv_sec = 0;
time->tv_nsec = 0;
if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
return -EIO;
if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
status = decode_attr_time(xdr, time);
bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
}
dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec);
return status;
}
static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
{
int status = 0;
time->tv_sec = 0;
time->tv_nsec = 0;
if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
return -EIO;
if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
status = decode_attr_time(xdr, time);
bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
}
dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec);
return status;
}
static int verify_attr_len(struct xdr_stream *xdr, uint32_t *savep, uint32_t attrlen)
{
unsigned int attrwords = XDR_QUADLEN(attrlen);
unsigned int nwords = xdr->p - savep;
if (unlikely(attrwords != nwords)) {
printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n",
__FUNCTION__,
attrwords << 2,
(attrwords < nwords) ? '<' : '>',
nwords << 2);
return -EIO;
}
return 0;
}
static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
{
uint32_t *p;
READ_BUF(20);
READ32(cinfo->atomic);
READ64(cinfo->before);
READ64(cinfo->after);
return 0;
}
static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
{
uint32_t *p;
uint32_t supp, acc;
int status;
status = decode_op_hdr(xdr, OP_ACCESS);
if (status)
return status;
READ_BUF(8);
READ32(supp);
READ32(acc);
access->supported = supp;
access->access = acc;
return 0;
}
static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
{
uint32_t *p;
int status;
status = decode_op_hdr(xdr, OP_CLOSE);
if (status)
return status;
READ_BUF(sizeof(res->stateid.data));
COPYMEM(res->stateid.data, sizeof(res->stateid.data));
return 0;
}
static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
{
uint32_t *p;
int status;
status = decode_op_hdr(xdr, OP_COMMIT);
if (status)
return status;
READ_BUF(8);
COPYMEM(res->verf->verifier, 8);
return 0;
}
static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
{
uint32_t *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;
READ_BUF(4);
READ32(bmlen);
READ_BUF(bmlen << 2);
return 0;
}
static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
{
uint32_t *savep;
uint32_t attrlen,
bitmap[2] = {0};
int status;
if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
goto xdr_error;
if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
goto xdr_error;
if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
goto xdr_error;
if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
goto xdr_error;
if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
goto xdr_error;
if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
goto xdr_error;
if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
goto xdr_error;
status = verify_attr_len(xdr, savep, attrlen);
xdr_error:
if (status != 0)
printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
return status;
}
static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
{
uint32_t *savep;
uint32_t attrlen,
bitmap[2] = {0};
int status;
if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
goto xdr_error;
if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
goto xdr_error;
if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
goto xdr_error;
if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
goto xdr_error;
if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
goto xdr_error;
if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
goto xdr_error;
if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
goto xdr_error;
if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
goto xdr_error;
if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
goto xdr_error;
status = verify_attr_len(xdr, savep, attrlen);
xdr_error:
if (status != 0)
printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
return status;
}
static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
{
uint32_t *savep;
uint32_t attrlen,
bitmap[2] = {0};
int status;
if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
goto xdr_error;
if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
goto xdr_error;
if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
goto xdr_error;
if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
goto xdr_error;
if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
goto xdr_error;
status = verify_attr_len(xdr, savep, attrlen);
xdr_error:
if (status != 0)
printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
return status;
}
static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
{
uint32_t *savep;
uint32_t attrlen,
bitmap[2] = {0},
type;
int status, fmode = 0;
if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
goto xdr_error;
if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
goto xdr_error;
fattr->bitmap[0] = bitmap[0];
fattr->bitmap[1] = bitmap[1];
if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
goto xdr_error;
if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
goto xdr_error;
fattr->type = nfs_type2fmt[type].nfs2type;
fmode = nfs_type2fmt[type].mode;
if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
goto xdr_error;
if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
goto xdr_error;
if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid_u.nfs4)) != 0)
goto xdr_error;
if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
goto xdr_error;
if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
goto xdr_error;
fattr->mode |= fmode;
if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
goto xdr_error;
if ((status = decode_attr_owner(xdr, bitmap, server->nfs4_state, &fattr->uid)) != 0)
goto xdr_error;
if ((status = decode_attr_group(xdr, bitmap, server->nfs4_state, &fattr->gid)) != 0)
goto xdr_error;
if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
goto xdr_error;
if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
goto xdr_error;
if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
goto xdr_error;
if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
goto xdr_error;
if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
goto xdr_error;
if ((status = verify_attr_len(xdr, savep, attrlen)) == 0) {
fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
fattr->timestamp = jiffies;
}
xdr_error:
if (status != 0)
printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
return status;
}
static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
{
uint32_t *savep;
uint32_t attrlen, bitmap[2];
int status;
if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
goto xdr_error;
if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
goto xdr_error;
if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
goto xdr_error;
fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
goto xdr_error;
if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
goto xdr_error;
if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
goto xdr_error;
fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
goto xdr_error;
fsinfo->wtpref = fsinfo->wtmax;
status = verify_attr_len(xdr, savep, attrlen);
xdr_error:
if (status != 0)
printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
return status;
}
static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
{
uint32_t *p;
uint32_t len;
int status;
status = decode_op_hdr(xdr, OP_GETFH);
if (status)
return status;
/* Zero handle first to allow comparisons */
memset(fh, 0, sizeof(*fh));
READ_BUF(4);
READ32(len);
if (len > NFS4_FHSIZE)
return -EIO;
fh->size = len;
READ_BUF(len);
COPYMEM(fh->data, len);
return 0;
}
static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
{
int status;
status = decode_op_hdr(xdr, OP_LINK);
if (status)
return status;
return decode_change_info(xdr, cinfo);
}
/*
* We create the owner, so we know a proper owner.id length is 4.
*/
static int decode_lock_denied (struct xdr_stream *xdr, struct nfs_lock_denied *denied)
{
uint32_t *p;
uint32_t namelen;
READ_BUF(32);
READ64(denied->offset);
READ64(denied->length);
READ32(denied->type);
READ64(denied->owner.clientid);
READ32(namelen);
READ_BUF(namelen);
if (namelen == 4)
READ32(denied->owner.id);
return -NFS4ERR_DENIED;
}
static int decode_lock(struct xdr_stream *xdr, struct nfs_lockres *res)
{
uint32_t *p;
int status;
status = decode_op_hdr(xdr, OP_LOCK);
if (status == 0) {
READ_BUF(sizeof(nfs4_stateid));
COPYMEM(&res->u.stateid, sizeof(res->u.stateid));
} else if (status == -NFS4ERR_DENIED)
return decode_lock_denied(xdr, &res->u.denied);
return status;
}
static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockres *res)
{
int status;
status = decode_op_hdr(xdr, OP_LOCKT);
if (status == -NFS4ERR_DENIED)
return decode_lock_denied(xdr, &res->u.denied);
return status;
}
static int decode_locku(struct xdr_stream *xdr, struct nfs_lockres *res)
{
uint32_t *p;
int status;
status = decode_op_hdr(xdr, OP_LOCKU);
if (status == 0) {
READ_BUF(sizeof(nfs4_stateid));
COPYMEM(&res->u.stateid, sizeof(res->u.stateid));
}
return status;
}
static int decode_lookup(struct xdr_stream *xdr)
{
return decode_op_hdr(xdr, OP_LOOKUP);
}
/* This is too sick! */
static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
{
uint32_t *p;
uint32_t limit_type, nblocks, blocksize;
READ_BUF(12);
READ32(limit_type);
switch (limit_type) {
case 1:
READ64(*maxsize);
break;
case 2:
READ32(nblocks);
READ32(blocksize);
*maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
}
return 0;
}
static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
{
uint32_t *p;
uint32_t delegation_type;
READ_BUF(4);
READ32(delegation_type);
if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
res->delegation_type = 0;
return 0;
}
READ_BUF(20);
COPYMEM(res->delegation.data, sizeof(res->delegation.data));
READ32(res->do_recall);
switch (delegation_type) {
case NFS4_OPEN_DELEGATE_READ:
res->delegation_type = FMODE_READ;
break;
case NFS4_OPEN_DELEGATE_WRITE:
res->delegation_type = FMODE_WRITE|FMODE_READ;
if (decode_space_limit(xdr, &res->maxsize) < 0)
return -EIO;
}
return decode_ace(xdr, NULL, res->server->nfs4_state);
}
static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
{
uint32_t *p;
uint32_t bmlen;
int status;
status = decode_op_hdr(xdr, OP_OPEN);
if (status)
return status;
READ_BUF(sizeof(res->stateid.data));
COPYMEM(res->stateid.data, sizeof(res->stateid.data));
decode_change_info(xdr, &res->cinfo);
READ_BUF(8);
READ32(res->rflags);
READ32(bmlen);
if (bmlen > 10)
goto xdr_error;
READ_BUF(bmlen << 2);
p += bmlen;
return decode_delegation(xdr, res);
xdr_error:
printk(KERN_NOTICE "%s: xdr error!\n", __FUNCTION__);
return -EIO;
}
static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
{
uint32_t *p;
int status;
status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
if (status)
return status;
READ_BUF(sizeof(res->stateid.data));
COPYMEM(res->stateid.data, sizeof(res->stateid.data));
return 0;
}
static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
{
uint32_t *p;
int status;
status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
if (status)
return status;
READ_BUF(sizeof(res->stateid.data));
COPYMEM(res->stateid.data, sizeof(res->stateid.data));
return 0;
}
static int decode_putfh(struct xdr_stream *xdr)
{
return decode_op_hdr(xdr, OP_PUTFH);
}
static int decode_putrootfh(struct xdr_stream *xdr)
{
return decode_op_hdr(xdr, OP_PUTROOTFH);
}
static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
{
struct kvec *iov = req->rq_rcv_buf.head;
uint32_t *p;
uint32_t count, eof, recvd, hdrlen;
int status;
status = decode_op_hdr(xdr, OP_READ);
if (status)
return status;
READ_BUF(8);
READ32(eof);
READ32(count);
hdrlen = (u8 *) p - (u8 *) iov->iov_base;
recvd = req->rq_rcv_buf.len - hdrlen;
if (count > recvd) {
printk(KERN_WARNING "NFS: server cheating in read reply: "
"count %u > recvd %u\n", count, recvd);
count = recvd;
eof = 0;
}
xdr_read_pages(xdr, count);
res->eof = eof;
res->count = count;
return 0;
}
static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
{
struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
struct page *page = *rcvbuf->pages;
struct kvec *iov = rcvbuf->head;
unsigned int nr, pglen = rcvbuf->page_len;
uint32_t *end, *entry, *p, *kaddr;
uint32_t len, attrlen;
int hdrlen, recvd, status;
status = decode_op_hdr(xdr, OP_READDIR);
if (status)
return status;
READ_BUF(8);
COPYMEM(readdir->verifier.data, 8);
hdrlen = (char *) p - (char *) iov->iov_base;
recvd = rcvbuf->len - hdrlen;
if (pglen > recvd)
pglen = recvd;
xdr_read_pages(xdr, pglen);
BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
kaddr = p = (uint32_t *) kmap_atomic(page, KM_USER0);
end = (uint32_t *) ((char *)p + pglen + readdir->pgbase);
entry = p;
for (nr = 0; *p++; nr++) {
if (p + 3 > end)
goto short_pkt;
p += 2; /* cookie */
len = ntohl(*p++); /* filename length */
if (len > NFS4_MAXNAMLEN) {
printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
goto err_unmap;
}
p += XDR_QUADLEN(len);
if (p + 1 > end)
goto short_pkt;
len = ntohl(*p++); /* bitmap length */
p += len;
if (p + 1 > end)
goto short_pkt;
attrlen = XDR_QUADLEN(ntohl(*p++));
p += attrlen; /* attributes */
if (p + 2 > end)
goto short_pkt;
entry = p;
}
if (!nr && (entry[0] != 0 || entry[1] == 0))
goto short_pkt;
out:
kunmap_atomic(kaddr, KM_USER0);
return 0;
short_pkt:
entry[0] = entry[1] = 0;
/* truncate listing ? */
if (!nr) {
printk(KERN_NOTICE "NFS: readdir reply truncated!\n");
entry[1] = 1;
}
goto out;
err_unmap:
kunmap_atomic(kaddr, KM_USER0);
return -errno_NFSERR_IO;
}
static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
{
struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
struct kvec *iov = rcvbuf->head;
int hdrlen, len, recvd;
uint32_t *p;
char *kaddr;
int status;
status = decode_op_hdr(xdr, OP_READLINK);
if (status)
return status;
/* Convert length of symlink */
READ_BUF(4);
READ32(len);
if (len >= rcvbuf->page_len || len <= 0) {
dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
return -ENAMETOOLONG;
}
hdrlen = (char *) xdr->p - (char *) iov->iov_base;
recvd = req->rq_rcv_buf.len - hdrlen;
if (recvd < len) {
printk(KERN_WARNING "NFS: server cheating in readlink reply: "
"count %u > recvd %u\n", len, recvd);
return -EIO;
}
xdr_read_pages(xdr, len);
/*
* The XDR encode routine has set things up so that
* the link text will be copied directly into the
* buffer. We just have to do overflow-checking,
* and and null-terminate the text (the VFS expects
* null-termination).
*/
kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
kaddr[len+rcvbuf->page_base] = '\0';
kunmap_atomic(kaddr, KM_USER0);
return 0;
}
static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
{
int status;
status = decode_op_hdr(xdr, OP_REMOVE);
if (status)
goto out;
status = decode_change_info(xdr, cinfo);
out:
return status;
}
static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
struct nfs4_change_info *new_cinfo)
{
int status;
status = decode_op_hdr(xdr, OP_RENAME);
if (status)
goto out;
if ((status = decode_change_info(xdr, old_cinfo)))
goto out;
status = decode_change_info(xdr, new_cinfo);
out:
return status;
}
static int decode_renew(struct xdr_stream *xdr)
{
return decode_op_hdr(xdr, OP_RENEW);
}
static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
size_t *acl_len)
{
uint32_t *savep;
uint32_t attrlen,
bitmap[2] = {0};
struct kvec *iov = req->rq_rcv_buf.head;
int status;
*acl_len = 0;
if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
goto out;
if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
goto out;
if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
goto out;
if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
return -EIO;
if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
int hdrlen, recvd;
/* We ignore &savep and don't do consistency checks on
* the attr length. Let userspace figure it out.... */
hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
recvd = req->rq_rcv_buf.len - hdrlen;
if (attrlen > recvd) {
printk(KERN_WARNING "NFS: server cheating in getattr"
" acl reply: attrlen %u > recvd %u\n",
attrlen, recvd);
return -EINVAL;
}
if (attrlen <= *acl_len)
xdr_read_pages(xdr, attrlen);
*acl_len = attrlen;
}
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, struct nfs_setattrres *res)
{
uint32_t *p;
uint32_t bmlen;
int status;
status = decode_op_hdr(xdr, OP_SETATTR);
if (status)
return status;
READ_BUF(4);
READ32(bmlen);
READ_BUF(bmlen << 2);
return 0;
}
static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_client *clp)
{
uint32_t *p;
uint32_t opnum;
int32_t nfserr;
READ_BUF(8);
READ32(opnum);
if (opnum != OP_SETCLIENTID) {
printk(KERN_NOTICE
"nfs4_decode_setclientid: Server returned operation"
" %d\n", opnum);
return -EIO;
}
READ32(nfserr);
if (nfserr == NFS_OK) {
READ_BUF(8 + sizeof(clp->cl_confirm.data));
READ64(clp->cl_clientid);
COPYMEM(clp->cl_confirm.data, sizeof(clp->cl_confirm.data));
} else if (nfserr == NFSERR_CLID_INUSE) {
uint32_t len;
/* skip netid string */
READ_BUF(4);
READ32(len);
READ_BUF(len);
/* skip uaddr string */
READ_BUF(4);
READ32(len);
READ_BUF(len);
return -NFSERR_CLID_INUSE;
} else
return -nfs_stat_to_errno(nfserr);
return 0;
}
static int decode_setclientid_confirm(struct xdr_stream *xdr)
{
return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
}
static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
{
uint32_t *p;
int status;
status = decode_op_hdr(xdr, OP_WRITE);
if (status)
return status;
READ_BUF(16);
READ32(res->count);
READ32(res->verf->committed);
COPYMEM(res->verf->verifier, 8);
return 0;
}
static int decode_delegreturn(struct xdr_stream *xdr)
{
return decode_op_hdr(xdr, OP_DELEGRETURN);
}
/*
* Decode OPEN_DOWNGRADE response
*/
static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (status)
goto out;
status = decode_putfh(&xdr);
if (status)
goto out;
status = decode_open_downgrade(&xdr, res);
out:
return status;
}
/*
* END OF "GENERIC" DECODE ROUTINES.
*/
/*
* Decode ACCESS response
*/
static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_accessres *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
goto out;
if ((status = decode_putfh(&xdr)) == 0)
status = decode_access(&xdr, res);
out:
return status;
}
/*
* Decode LOOKUP response
*/
static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
goto out;
if ((status = decode_putfh(&xdr)) != 0)
goto out;
if ((status = decode_lookup(&xdr)) != 0)
goto out;
if ((status = decode_getfh(&xdr, res->fh)) != 0)
goto out;
status = decode_getfattr(&xdr, res->fattr, res->server);
out:
return status;
}
/*
* Decode LOOKUP_ROOT response
*/
static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
goto out;
if ((status = decode_putrootfh(&xdr)) != 0)
goto out;
if ((status = decode_getfh(&xdr, res->fh)) == 0)
status = decode_getfattr(&xdr, res->fattr, res->server);
out:
return status;
}
/*
* Decode REMOVE response
*/
static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
goto out;
if ((status = decode_putfh(&xdr)) == 0)
status = decode_remove(&xdr, cinfo);
out:
return status;
}
/*
* Decode RENAME response
*/
static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_rename_res *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
goto out;
if ((status = decode_putfh(&xdr)) != 0)
goto out;
if ((status = decode_savefh(&xdr)) != 0)
goto out;
if ((status = decode_putfh(&xdr)) != 0)
goto out;
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, uint32_t *p, struct nfs4_change_info *cinfo)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
goto out;
if ((status = decode_putfh(&xdr)) != 0)
goto out;
if ((status = decode_savefh(&xdr)) != 0)
goto out;
if ((status = decode_putfh(&xdr)) != 0)
goto out;
status = decode_link(&xdr, cinfo);
out:
return status;
}
/*
* Decode CREATE response
*/
static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
goto out;
if ((status = decode_putfh(&xdr)) != 0)
goto out;
if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
goto out;
if ((status = decode_getfh(&xdr, res->fh)) != 0)
goto out;
status = decode_getfattr(&xdr, res->fattr, res->server);
if (status == NFS4ERR_DELAY)
status = 0;
out:
return status;
}
/*
* Decode SYMLINK response
*/
static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
{
return nfs4_xdr_dec_create(rqstp, p, res);
}
/*
* Decode GETATTR response
*/
static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_getattr_res *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (status)
goto out;
status = decode_putfh(&xdr);
if (status)
goto out;
status = decode_getfattr(&xdr, res->fattr, res->server);
out:
return status;
}
/*
* Encode an SETACL request
*/
static int
nfs4_xdr_enc_setacl(struct rpc_rqst *req, uint32_t *p, struct nfs_setaclargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 2,
};
int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_compound_hdr(&xdr, &hdr);
status = encode_putfh(&xdr, args->fh);
if (status)
goto out;
status = encode_setacl(&xdr, args);
out:
return status;
}
/*
* Decode SETACL response
*/
static int
nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, uint32_t *p, void *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (status)
goto out;
status = decode_putfh(&xdr);
if (status)
goto out;
status = decode_setattr(&xdr, res);
out:
return status;
}
/*
* Decode GETACL response
*/
static int
nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, uint32_t *p, size_t *acl_len)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (status)
goto out;
status = decode_putfh(&xdr);
if (status)
goto out;
status = decode_getacl(&xdr, rqstp, acl_len);
out:
return status;
}
/*
* Decode CLOSE response
*/
static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (status)
goto out;
status = decode_putfh(&xdr);
if (status)
goto out;
status = decode_close(&xdr, res);
out:
return status;
}
/*
* Decode OPEN response
*/
static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (status)
goto out;
status = decode_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;
status = decode_getfattr(&xdr, res->f_attr, res->server);
if (status == NFS4ERR_DELAY)
status = 0;
out:
return status;
}
/*
* Decode OPEN_CONFIRM response
*/
static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_open_confirmres *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (status)
goto out;
status = decode_putfh(&xdr);
if (status)
goto out;
status = decode_open_confirm(&xdr, res);
out:
return status;
}
/*
* Decode OPEN response
*/
static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (status)
goto out;
status = decode_putfh(&xdr);
if (status)
goto out;
status = decode_open(&xdr, res);
out:
return status;
}
/*
* Decode SETATTR response
*/
static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_setattrres *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (status)
goto out;
status = decode_putfh(&xdr);
if (status)
goto out;
status = decode_setattr(&xdr, res);
if (status)
goto out;
status = decode_getfattr(&xdr, res->fattr, res->server);
if (status == NFS4ERR_DELAY)
status = 0;
out:
return status;
}
/*
* Decode LOCK response
*/
static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (status)
goto out;
status = decode_putfh(&xdr);
if (status)
goto out;
status = decode_lock(&xdr, res);
out:
return status;
}
/*
* Decode LOCKT response
*/
static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (status)
goto out;
status = decode_putfh(&xdr);
if (status)
goto out;
status = decode_lockt(&xdr, res);
out:
return status;
}
/*
* Decode LOCKU response
*/
static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (status)
goto out;
status = decode_putfh(&xdr);
if (status)
goto out;
status = decode_locku(&xdr, res);
out:
return status;
}
/*
* Decode READLINK response
*/
static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, uint32_t *p, void *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (status)
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, uint32_t *p, struct nfs4_readdir_res *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (status)
goto out;
status = decode_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, uint32_t *p, struct nfs_readres *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (status)
goto out;
status = decode_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, uint32_t *p, struct nfs_writeres *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (status)
goto out;
status = decode_putfh(&xdr);
if (status)
goto out;
status = decode_write(&xdr, res);
if (!status)
status = res->count;
out:
return status;
}
/*
* Decode COMMIT response
*/
static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (status)
goto out;
status = decode_putfh(&xdr);
if (status)
goto out;
status = decode_commit(&xdr, res);
out:
return status;
}
/*
* FSINFO request
*/
static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (!status)
status = decode_putfh(&xdr);
if (!status)
status = decode_fsinfo(&xdr, fsinfo);
if (!status)
status = -nfs_stat_to_errno(hdr.status);
return status;
}
/*
* PATHCONF request
*/
static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, uint32_t *p, struct nfs_pathconf *pathconf)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (!status)
status = decode_putfh(&xdr);
if (!status)
status = decode_pathconf(&xdr, pathconf);
return status;
}
/*
* STATFS request
*/
static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, uint32_t *p, struct nfs_fsstat *fsstat)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (!status)
status = decode_putfh(&xdr);
if (!status)
status = decode_statfs(&xdr, fsstat);
return status;
}
/*
* GETATTR_BITMAP request
*/
static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, uint32_t *p, struct nfs4_server_caps_res *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
goto out;
if ((status = decode_putfh(&xdr)) != 0)
goto out;
status = decode_server_caps(&xdr, res);
out:
return status;
}
/*
* Decode RENEW response
*/
static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (!status)
status = decode_renew(&xdr);
return status;
}
/*
* a SETCLIENTID request
*/
static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, uint32_t *p,
struct nfs4_client *clp)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (!status)
status = decode_setclientid(&xdr, clp);
if (!status)
status = -nfs_stat_to_errno(hdr.status);
return status;
}
/*
* a SETCLIENTID_CONFIRM request
*/
static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (!status)
status = decode_setclientid_confirm(&xdr);
if (!status)
status = decode_putrootfh(&xdr);
if (!status)
status = decode_fsinfo(&xdr, fsinfo);
if (!status)
status = -nfs_stat_to_errno(hdr.status);
return status;
}
/*
* DELEGRETURN request
*/
static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
status = decode_compound_hdr(&xdr, &hdr);
if (status == 0) {
status = decode_putfh(&xdr);
if (status == 0)
status = decode_delegreturn(&xdr);
}
return status;
}
uint32_t *nfs4_decode_dirent(uint32_t *p, struct nfs_entry *entry, int plus)
{
uint32_t bitmap[2] = {0};
uint32_t len;
if (!*p++) {
if (!*p)
return ERR_PTR(-EAGAIN);
entry->eof = 1;
return ERR_PTR(-EBADCOOKIE);
}
entry->prev_cookie = entry->cookie;
p = xdr_decode_hyper(p, &entry->cookie);
entry->len = ntohl(*p++);
entry->name = (const char *) p;
p += XDR_QUADLEN(entry->len);
/*
* In case the server doesn't return an inode number,
* we fake one here. (We don't use inode number 0,
* since glibc seems to choke on it...)
*/
entry->ino = 1;
len = ntohl(*p++); /* bitmap length */
if (len-- > 0) {
bitmap[0] = ntohl(*p++);
if (len-- > 0) {
bitmap[1] = ntohl(*p++);
p += len;
}
}
len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
if (len > 0) {
if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
/* Ignore the return value of rdattr_error for now */
p++;
len--;
}
if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
xdr_decode_hyper(p, &entry->ino);
else if (bitmap[0] == FATTR4_WORD0_FILEID)
xdr_decode_hyper(p, &entry->ino);
p += len;
}
entry->eof = !p[0] && p[1];
return p;
}
/*
* We need to translate between nfs status return values and
* the local errno values which may not be the same.
*/
static struct {
int stat;
int errno;
} nfs_errtbl[] = {
{ NFS4_OK, 0 },
{ NFS4ERR_PERM, EPERM },
{ NFS4ERR_NOENT, ENOENT },
{ NFS4ERR_IO, errno_NFSERR_IO },
{ NFS4ERR_NXIO, ENXIO },
{ NFS4ERR_ACCESS, EACCES },
{ NFS4ERR_EXIST, EEXIST },
{ NFS4ERR_XDEV, EXDEV },
{ NFS4ERR_NOTDIR, ENOTDIR },
{ NFS4ERR_ISDIR, EISDIR },
{ NFS4ERR_INVAL, EINVAL },
{ NFS4ERR_FBIG, EFBIG },
{ NFS4ERR_NOSPC, ENOSPC },
{ NFS4ERR_ROFS, EROFS },
{ NFS4ERR_MLINK, EMLINK },
{ NFS4ERR_NAMETOOLONG, ENAMETOOLONG },
{ NFS4ERR_NOTEMPTY, ENOTEMPTY },
{ NFS4ERR_DQUOT, EDQUOT },
{ NFS4ERR_STALE, ESTALE },
{ NFS4ERR_BADHANDLE, EBADHANDLE },
{ NFS4ERR_BAD_COOKIE, EBADCOOKIE },
{ NFS4ERR_NOTSUPP, ENOTSUPP },
{ NFS4ERR_TOOSMALL, ETOOSMALL },
{ NFS4ERR_SERVERFAULT, ESERVERFAULT },
{ NFS4ERR_BADTYPE, EBADTYPE },
{ NFS4ERR_LOCKED, EAGAIN },
{ NFS4ERR_RESOURCE, EREMOTEIO },
{ NFS4ERR_SYMLINK, ELOOP },
{ NFS4ERR_OP_ILLEGAL, EOPNOTSUPP },
{ NFS4ERR_DEADLOCK, EDEADLK },
{ NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs
* to be handled by a
* middle-layer.
*/
{ -1, EIO }
};
/*
* Convert an NFS error code to a local one.
* This one is used jointly by NFSv2 and NFSv3.
*/
static int
nfs_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 ESERVERFAULT;
}
/* If we cannot translate the error, the recovery routines should
* handle it.
* Note: remaining NFSv4 error codes have values > 10000, so should
* not conflict with native Linux error codes.
*/
return stat;
}
#ifndef MAX
# define MAX(a, b) (((a) > (b))? (a) : (b))
#endif
#define PROC(proc, argtype, restype) \
[NFSPROC4_CLNT_##proc] = { \
.p_proc = NFSPROC4_COMPOUND, \
.p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
.p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
.p_bufsiz = MAX(NFS4_##argtype##_sz,NFS4_##restype##_sz) << 2, \
}
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),
};
struct rpc_version nfs_version4 = {
.number = 4,
.nrprocs = sizeof(nfs4_procedures)/sizeof(nfs4_procedures[0]),
.procs = nfs4_procedures
};
/*
* Local variables:
* c-basic-offset: 8
* End:
*/
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