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-rw-r--r--xlators/protocol/rpc/rpc-lib/src/xdr-common.h48
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diff --git a/xlators/protocol/rpc/rpc-lib/src/xdr-common.h b/xlators/protocol/rpc/rpc-lib/src/xdr-common.h
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+/*
+ Copyright (c) 2010 Gluster, Inc. <http://www.gluster.com>
+ This file is part of GlusterFS.
+
+ GlusterFS is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3 of the License,
+ or (at your option) any later version.
+
+ GlusterFS is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see
+ <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _XDR_COMMON_H_
+#define _XDR_COMMON_H_
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include <rpc/rpc.h>
+#define XDR_BYTES_PER_UNIT 4
+
+/* Returns the address of the byte that follows the
+ * last byte used for decoding the previous xdr component.
+ * For eg, once the RPC call for NFS has been decoded, thie macro will return
+ * the address from which the NFS header starts.
+ */
+#define xdr_decoded_remaining_addr(xdr) ((&xdr)->x_private)
+
+/* Returns the length of the remaining record after the previous decode
+ * operation completed.
+ */
+#define xdr_decoded_remaining_len(xdr) ((&xdr)->x_handy)
+
+/* Returns the number of bytes used by the last encode operation. */
+#define xdr_encoded_length(xdr) (((size_t)(&xdr)->x_private) - ((size_t)(&xdr)->x_base))
+
+#define xdr_decoded_length(xdr) (((size_t)(&xdr)->x_private) - ((size_t)(&xdr)->x_base))
+
+#endif