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nfs42: add CLONE xdr functions 

xdr definitions per draft-ietf-nfsv4-minorversion2-38.txt

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Peng Tao 2015-09-26 02:24:34 +08:00 committed by Trond Myklebust
parent c6fa8e6de3
commit 36022770de
4 changed files with 118 additions and 1 deletions
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97
fs/nfs/nfs42xdr.c
View File

@ -34,6 +34,12 @@
1 /* opaque devaddr4 length */ + \
XDR_QUADLEN(PNFS_LAYOUTSTATS_MAXSIZE))
#define decode_layoutstats_maxsz (op_decode_hdr_maxsz)
#define encode_clone_maxsz (encode_stateid_maxsz + \
encode_stateid_maxsz + \
2 /* src offset */ + \
2 /* dst offset */ + \
2 /* count */)
#define decode_clone_maxsz (op_decode_hdr_maxsz)
#define NFS4_enc_allocate_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
@ -65,7 +71,20 @@
decode_sequence_maxsz + \
decode_putfh_maxsz + \
PNFS_LAYOUTSTATS_MAXDEV * decode_layoutstats_maxsz)
#define NFS4_enc_clone_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_savefh_maxsz + \
encode_putfh_maxsz + \
encode_clone_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_clone_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_savefh_maxsz + \
decode_putfh_maxsz + \
decode_clone_maxsz + \
decode_getattr_maxsz)
static void encode_fallocate(struct xdr_stream *xdr,
struct nfs42_falloc_args *args)
@ -128,6 +147,21 @@ static void encode_layoutstats(struct xdr_stream *xdr,
encode_uint32(xdr, 0);
}
static void encode_clone(struct xdr_stream *xdr,
struct nfs42_clone_args *args,
struct compound_hdr *hdr)
{
__be32 *p;
encode_op_hdr(xdr, OP_CLONE, decode_clone_maxsz, hdr);
encode_nfs4_stateid(xdr, &args->src_stateid);
encode_nfs4_stateid(xdr, &args->dst_stateid);
p = reserve_space(xdr, 3*8);
p = xdr_encode_hyper(p, args->src_offset);
p = xdr_encode_hyper(p, args->dst_offset);
xdr_encode_hyper(p, args->count);
}
/*
* Encode ALLOCATE request
*/
@ -206,6 +240,27 @@ static void nfs4_xdr_enc_layoutstats(struct rpc_rqst *req,
encode_nops(&hdr);
}
/*
* Encode CLONE request
*/
static void nfs4_xdr_enc_clone(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs42_clone_args *args)
{
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->src_fh, &hdr);
encode_savefh(xdr, &hdr);
encode_putfh(xdr, args->dst_fh, &hdr);
encode_clone(xdr, args, &hdr);
encode_getfattr(xdr, args->dst_bitmask, &hdr);
encode_nops(&hdr);
}
static int decode_allocate(struct xdr_stream *xdr, struct nfs42_falloc_res *res)
{
return decode_op_hdr(xdr, OP_ALLOCATE);
@ -243,6 +298,11 @@ static int decode_layoutstats(struct xdr_stream *xdr)
return decode_op_hdr(xdr, OP_LAYOUTSTATS);
}
static int decode_clone(struct xdr_stream *xdr)
{
return decode_op_hdr(xdr, OP_CLONE);
}
/*
* Decode ALLOCATE request
*/
@ -351,4 +411,39 @@ out:
return status;
}
/*
* Decode CLONE request
*/
static int nfs4_xdr_dec_clone(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
struct nfs42_clone_res *res)
{
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_savefh(xdr);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_clone(xdr);
if (status)
goto out;
status = decode_getfattr(xdr, res->dst_fattr, res->server);
out:
res->rpc_status = status;
return status;
}
#endif /* __LINUX_FS_NFS_NFS4_2XDR_H */

1
fs/nfs/nfs4xdr.c
View File

@ -7465,6 +7465,7 @@ struct rpc_procinfo nfs4_procedures[] = {
PROC(ALLOCATE, enc_allocate, dec_allocate),
PROC(DEALLOCATE, enc_deallocate, dec_deallocate),
PROC(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
PROC(CLONE, enc_clone, dec_clone),
#endif /* CONFIG_NFS_V4_2 */
};

2
include/linux/nfs4.h
View File

@ -130,6 +130,7 @@ enum nfs_opnum4 {
OP_READ_PLUS = 68,
OP_SEEK = 69,
OP_WRITE_SAME = 70,
OP_CLONE = 71,
OP_ILLEGAL = 10044,
};
@ -501,6 +502,7 @@ enum {
NFSPROC4_CLNT_ALLOCATE,
NFSPROC4_CLNT_DEALLOCATE,
NFSPROC4_CLNT_LAYOUTSTATS,
NFSPROC4_CLNT_CLONE,
};
/* nfs41 types */

19
include/linux/nfs_xdr.h
View File

@ -359,6 +359,25 @@ struct nfs42_layoutstat_data {
struct nfs42_layoutstat_res res;
};
struct nfs42_clone_args {
struct nfs4_sequence_args seq_args;
struct nfs_fh *src_fh;
struct nfs_fh *dst_fh;
nfs4_stateid src_stateid;
nfs4_stateid dst_stateid;
__u64 src_offset;
__u64 dst_offset;
__u64 count;
const u32 *dst_bitmask;
};
struct nfs42_clone_res {
struct nfs4_sequence_res seq_res;
unsigned int rpc_status;
struct nfs_fattr *dst_fattr;
const struct nfs_server *server;
};
struct stateowner_id {
__u64 create_time;
__u32 uniquifier;