1 files changed, 116 insertions, 0 deletions
diff --git a/rpc/rpc-lib/src/xdr-common.h b/rpc/rpc-lib/src/xdr-common.h
new file mode 100644
index 00000000000..752736b3d4d
--- /dev/null
+++ b/rpc/rpc-lib/src/xdr-common.h
@@ -0,0 +1,116 @@
+/*
+  Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
+  This file is part of GlusterFS.
+
+  This file is licensed to you under your choice of the GNU Lesser
+  General Public License, version 3 or any later version (LGPLv3 or
+  later), or the GNU General Public License, version 2 (GPLv2), in all
+  cases as published by the Free Software Foundation.
+*/
+
+#ifndef _XDR_COMMON_H_
+#define _XDR_COMMON_H_
+
+#include <rpc/types.h>
+#include <sys/types.h>
+#include <rpc/xdr.h>
+#include <rpc/auth.h>
+#include <sys/uio.h>
+
+#ifdef __NetBSD__
+#include <dirent.h>
+#endif /* __NetBSD__ */
+
+enum gf_dump_procnum {
+    GF_DUMP_NULL,
+    GF_DUMP_DUMP,
+    GF_DUMP_PING,
+    GF_DUMP_MAXVALUE,
+};
+
+#define GLUSTER_DUMP_PROGRAM 123451501 /* Completely random */
+#define GLUSTER_DUMP_VERSION 1
+
+/* MAX_AUTH_BYTES is restricted to 400 bytes, see
+ * http://tools.ietf.org/html/rfc5531#section-8.2 */
+#define GF_MAX_AUTH_BYTES MAX_AUTH_BYTES
+
+/* The size of an AUTH_GLUSTERFS_V2 structure:
+ *
+ *   1 | pid
+ *   1 | uid
+ *   1 | gid
+ *   1 | groups_len
+ *  XX | groups_val (GF_MAX_AUX_GROUPS=65535)
+ *   1 | lk_owner_len
+ *  YY | lk_owner_val (GF_MAX_LOCK_OWNER_LEN=1024)
+ * ----+-------------------------------------------
+ *   5 | total xdr-units
+ *
+ * one XDR-unit is defined as BYTES_PER_XDR_UNIT = 4 bytes
+ * MAX_AUTH_BYTES = 400 is the maximum, this is 100 xdr-units.
+ * XX + YY can be 95 to fill the 100 xdr-units.
+ *
+ * Note that the on-wire protocol has tighter requirements than the internal
+ * structures. It is possible for xlators to use more groups and a bigger
+ * lk_owner than that can be sent by a GlusterFS-client.
+ *
+ * -------
+ * On v3, there are 4 more units, and hence it will be 9 xdr-units
+ */
+#define GF_AUTH_GLUSTERFS_MAX_GROUPS(lk_len, type)                             \
+    ((type == AUTH_GLUSTERFS_v2) ? (95 - lk_len) : (91 - lk_len))
+#define GF_AUTH_GLUSTERFS_MAX_LKOWNER(groups_len, type)                        \
+    ((type == AUTH_GLUSTERFS_v2) ? (95 - groups_len) : (91 - groups_len))
+
+#ifdef GF_LINUX_HOST_OS
+#define xdr_u_int32_t xdr_uint32_t
+#define xdr_u_int64_t xdr_uint64_t
+unsigned long
+xdr_sizeof(xdrproc_t func, void *data);
+#endif
+
+#ifdef GF_DARWIN_HOST_OS
+#define xdr_u_quad_t xdr_u_int64_t
+#define xdr_quad_t xdr_int64_t
+#define xdr_uint32_t xdr_u_int32_t
+#define xdr_uint64_t xdr_u_int64_t
+#define uint64_t u_int64_t
+unsigned long
+xdr_sizeof(xdrproc_t func, void *data);
+#endif
+
+#if defined(__NetBSD__)
+#define xdr_u_quad_t xdr_u_int64_t
+#define xdr_quad_t xdr_int64_t
+#define xdr_uint32_t xdr_u_int32_t
+#define xdr_uint64_t xdr_u_int64_t
+#endif
+
+#ifdef GF_SOLARIS_HOST_OS
+#define u_quad_t uint64_t
+#define quad_t int64_t
+#define xdr_u_quad_t xdr_uint64_t
+#define xdr_quad_t xdr_int64_t
+#endif
+
+/* Returns the address of the byte that follows the
+ * last byte used for decoding the previous xdr component.
+ * E.g. once the RPC call for NFS has been decoded, the 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