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Commit e78291e4 authored by Benny Halevy's avatar Benny Halevy Committed by Trond Myklebust
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nfs: nfs4xdr: introduce decode_sessionid helper 



Signed-off-by: default avatarBenny Halevy <bhalevy@panasas.com>
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent db942bbd

fs/nfs/nfs4xdr.c

+15 −10
Original line number Diff line number Diff line
@@ -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__);