Add AF_INET6-capable API to acquire an RPC CLIENT *

Provide a simple interface that any component of nfs-utils can use to acquire
an RPC CLIENT *.  This is an AF_INET6-enabled API, and can also handle
PF_LOCAL sockets if libtirpc is present on the system.

When libtirpc is not available, legacy RPC services will be used instead,
and an attempt to connect to an AF_INET6 address will fail.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/support/include/nfsrpc.h b/support/include/nfsrpc.h
new file mode 100644
index 0000000..e129a72
--- /dev/null
+++ b/support/include/nfsrpc.h
@@ -0,0 +1,70 @@
+/*
+ * nfsrpc.h -- RPC client APIs provided by support/nfs
+ *
+ * Copyright (C) 2008 Oracle Corporation.  All rights reserved.
+ *
+ * This program 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 2 of the License, or (at your option) any later version.
+ *
+ * This program 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, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 021110-1307, USA.
+ *
+ */
+
+#ifndef __NFS_UTILS_NFSRPC_H
+#define __NFS_UTILS_NFSRPC_H
+
+#include <rpc/types.h>
+
+/*
+ * Conventional RPC program numbers
+ */
+#ifndef RPCBPROG
+#define RPCBPROG	((rpcprog_t)100000)
+#endif
+#ifndef PMAPPROG
+#define PMAPPROG	((rpcprog_t)100000)
+#endif
+
+#ifndef NFSPROG
+#define NFSPROG		((rpcprog_t)100003)
+#endif
+#ifndef MOUNTPROG
+#define MOUNTPROG	((rpcprog_t)100005)
+#endif
+#ifndef NLMPROG
+#define NLMPROG		((rpcprog_t)100021)
+#endif
+#ifndef NSMPROG
+#define NSMPROG		((rpcprog_t)100024)
+#endif
+
+/*
+ * Look up an RPC program name in /etc/rpc
+ */
+extern rpcprog_t	nfs_getrpcbyname(const rpcprog_t, const char *table[]);
+
+/*
+ * Look up a port number in /etc/services for an RPC program
+ */
+extern unsigned short	nfs_getportbynumber(const rpcprog_t program,
+				const unsigned short transport);
+
+/*
+ * Acquire an RPC CLIENT *
+ */
+extern CLIENT		*nfs_get_rpcclient(const struct sockaddr *,
+				const socklen_t, const unsigned short,
+				const rpcprog_t, const rpcvers_t,
+				struct timeval *);
+
+#endif	/* __NFS_UTILS_NFSRPC_H */