s3:lib: add cluster_support_[available|features]()

This allows runtime selection of libsamba-cluster-support.so

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>

diff --git a/source3/lib/cluster_support.c b/source3/lib/cluster_support.c
new file mode 100644 (file)
index 0000000..4642367
--- /dev/null
+++ b/source3/lib/cluster_support.c
@@ -0,0 +1,91 @@
+/*
+   Unix SMB/CIFS implementation.
+   Copyright (C) 2014 Stefan Metzmacher
+
+   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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include <tdb.h>
+#include "cluster_support.h"
+
+#ifdef HAVE_CTDB_H
+#include <ctdb.h>
+#endif
+
+#ifdef HAVE_CTDB_PROTOCOL_H
+#include <ctdb_protocol.h>
+#else
+#ifdef HAVE_CTDB_PRIVATE_H
+#include <ctdb_private.h>
+#endif
+#endif
+
+bool cluster_support_available(void)
+{
+#ifdef CLUSTER_SUPPORT
+       return true;
+#else
+       return false;
+#endif
+}
+
+const char *cluster_support_features(void)
+{
+#define _LINE_DEF(x) "   " #x "\n"
+#define _LINE_STR(x) "   " #x ": " x "\n"
+#define _LINE_INT(x) "   " #x ": " __STRINGSTRING(x) "\n"
+       static const char *v = "Cluster support features:\n"
+#ifdef CLUSTER_SUPPORT
+       _LINE_DEF(CLUSTER_SUPPORT)
+#else
+       "   NONE\n"
+#endif
+#ifdef HAVE_CTDB_H
+       _LINE_DEF(HAVE_CTDB_H)
+#endif
+#ifdef HAVE_CTDB_PRIVATE_H
+       _LINE_DEF(HAVE_CTDB_PRIVATE_H)
+#endif
+#ifdef HAVE_CTDB_PROTOCOL_H
+       _LINE_DEF(HAVE_CTDB_PROTOCOL_H)
+#endif
+#ifdef HAVE_CTDB_CONTROL_TRANS3_COMMIT_DECL
+       _LINE_DEF(HAVE_CTDB_CONTROL_TRANS3_COMMIT_DECL)
+#endif
+#ifdef HAVE_CTDB_CONTROL_SCHEDULE_FOR_DELETION_DECL
+       _LINE_DEF(HAVE_CTDB_CONTROL_SCHEDULE_FOR_DELETION_DECL)
+#endif
+#ifdef HAVE_CTDB_WANT_READONLY_DECL
+       _LINE_DEF(HAVE_CTDB_WANT_READONLY_DECL)
+#endif
+#ifdef HAVE_STRUCT_CTDB_CONTROL_TCP
+       _LINE_DEF(HAVE_STRUCT_CTDB_CONTROL_TCP)
+#endif
+#ifdef HAVE_STRUCT_CTDB_CONTROL_TCP_ADDR
+       _LINE_DEF(HAVE_STRUCT_CTDB_CONTROL_TCP_ADDR)
+#endif
+#ifdef HAVE_CTDB_CONTROL_CHECK_SRVIDS_DECL
+       _LINE_DEF(HAVE_CTDB_CONTROL_CHECK_SRVIDS_DECL)
+#endif
+#ifdef CTDB_PATH
+       _LINE_STR(CTDB_PATH)
+#endif
+#ifdef CTDB_VERSION
+       _LINE_INT(CTDB_VERSION)
+#endif
+       "";
+
+       return v;
+}

diff --git a/source3/lib/cluster_support.h b/source3/lib/cluster_support.h
new file mode 100644 (file)
index 0000000..0a03d2b
--- /dev/null
+++ b/source3/lib/cluster_support.h
@@ -0,0 +1,20 @@
+/*
+   Unix SMB/CIFS implementation.
+   Copyright (C) 2014 Stefan Metzmacher
+
+   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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+bool cluster_support_available(void);
+const char *cluster_support_features(void);

diff --git a/source3/wscript_build b/source3/wscript_build
index ebd96b7735b7a5a4860a4bfa45e43b4c350861a9..ccded5fb0f211419f1150c6a735d0df42c552973 100755 (executable)
--- a/source3/wscript_build
+++ b/source3/wscript_build
@@ -272,6 +272,7 @@ bld.SAMBA3_SUBSYSTEM('samba3util',
 
 bld.SAMBA3_LIBRARY('samba-cluster-support',
                    source='''
+                     lib/cluster_support.c
                      lib/ctdb_dummy.c
                      lib/dbwrap/dbwrap_ctdb.c
                      lib/messages_ctdbd.c