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nfs: nfs4xdr: introduce decode_sessionid helper 

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Benny Halevy 2009-08-14 17:20:00 +03:00 committed by Trond Myklebust
parent db942bbd09
commit e78291e4e0
1 changed files with 15 additions and 10 deletions
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25
fs/nfs/nfs4xdr.c
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@ -4212,6 +4212,11 @@ static int decode_chan_attrs(struct xdr_stream *xdr,
return 0;
}
static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
{
return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
}
static int decode_create_session(struct xdr_stream *xdr,
struct nfs41_create_session_res *res)
{
@ -4221,14 +4226,11 @@ static int decode_create_session(struct xdr_stream *xdr,
struct nfs4_session *session = clp->cl_session;
status = decode_op_hdr(xdr, OP_CREATE_SESSION);
if (status)
if (!status)
status = decode_sessionid(xdr, &session->sess_id);
if (unlikely(status))
return status;
/* sessionid */
READ_BUF(NFS4_MAX_SESSIONID_LEN);
COPYMEM(&session->sess_id, NFS4_MAX_SESSIONID_LEN);
/* seqid, flags */
READ_BUF(8);
clp->cl_seqid = be32_to_cpup(p++);
@ -4262,7 +4264,9 @@ static int decode_sequence(struct xdr_stream *xdr,
return 0;
status = decode_op_hdr(xdr, OP_SEQUENCE);
if (status)
if (!status)
status = decode_sessionid(xdr, &id);
if (unlikely(status))
goto out_err;
/*
@ -4271,15 +4275,16 @@ static int decode_sequence(struct xdr_stream *xdr,
*/
status = -ESERVERFAULT;
slot = &res->sr_session->fc_slot_table.slots[res->sr_slotid];
READ_BUF(NFS4_MAX_SESSIONID_LEN + 20);
COPYMEM(id.data, NFS4_MAX_SESSIONID_LEN);
if (memcmp(id.data, res->sr_session->sess_id.data,
NFS4_MAX_SESSIONID_LEN)) {
dprintk("%s Invalid session id\n", __func__);
goto out_err;
}
READ_BUF(20);
/* seqid */
slot = &res->sr_session->fc_slot_table.slots[res->sr_slotid];
dummy = be32_to_cpup(p++);
if (dummy != slot->seq_nr) {
dprintk("%s Invalid sequence number\n", __func__);