From b6d7a484804eaf39bf6074efd38ddcb78fd2a420 Mon Sep 17 00:00:00 2001
From: Alasdair Kergon <agk@redhat.com>
Date: Tue, 31 Jan 2012 21:21:53 +0000
Subject: Automatically detect whether corosync clvmd needs to use confdb or
 cmap. (fabio)

---
 daemons/clvmd/Makefile.in      |  6 ++--
 daemons/clvmd/clvmd-corosync.c | 62 ++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 64 insertions(+), 4 deletions(-)

(limited to 'daemons/clvmd')

diff --git a/daemons/clvmd/Makefile.in b/daemons/clvmd/Makefile.in
index dcdabab0..9ca11baf 100644
--- a/daemons/clvmd/Makefile.in
+++ b/daemons/clvmd/Makefile.in
@@ -17,6 +17,8 @@ top_builddir = @top_builddir@
 
 CMAN_LIBS = @CMAN_LIBS@
 CMAN_CFLAGS = @CMAN_CFLAGS@
+CMAP_LIBS = @CMAP_LIBS@
+CMAP_CFLAGS = @CMAP_CFLAGS@
 CONFDB_LIBS = @CONFDB_LIBS@
 CONFDB_CFLAGS = @CONFDB_CFLAGS@
 CPG_LIBS = @CPG_LIBS@
@@ -54,8 +56,8 @@ endif
 
 ifneq (,$(findstring corosync,, "@CLVMD@,"))
 	SOURCES += clvmd-corosync.c
-	LMLIBS += $(CONFDB_LIBS) $(CPG_LIBS) $(DLM_LIBS) $(QUORUM_LIBS)
-	CFLAGS += $(CONFDB_CFLAGS) $(CPG_CFLAGS) $(DLM_CFLAGS) $(QUORUM_CFLAGS)
+	LMLIBS += $(CMAP_LIBS) $(CONFDB_LIBS) $(CPG_LIBS) $(DLM_LIBS) $(QUORUM_LIBS)
+	CFLAGS += $(CMAP_CFLAGS) $(CONFDB_CFLAGS) $(CPG_CFLAGS) $(DLM_CFLAGS) $(QUORUM_CFLAGS)
 	DEFS += -DUSE_COROSYNC
 endif
 
diff --git a/daemons/clvmd/clvmd-corosync.c b/daemons/clvmd/clvmd-corosync.c
index e929681c..d85ec1e6 100644
--- a/daemons/clvmd/clvmd-corosync.c
+++ b/daemons/clvmd/clvmd-corosync.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2009 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2009-2012 Red Hat, Inc. All rights reserved.
  *
  * This file is part of LVM2.
  *
@@ -30,7 +30,15 @@
 
 #include <corosync/cpg.h>
 #include <corosync/quorum.h>
-#include <corosync/confdb.h>
+
+#ifdef HAVE_COROSYNC_CONFDB_H
+#  include <corosync/confdb.h>
+#elif defined HAVE_COROSYNC_CMAP_H
+#  include <corosync/cmap.h>
+#else
+#  error "Either HAVE_COROSYNC_CONFDB_H or HAVE_COROSYNC_CMAP_H must be defined."
+#endif
+
 #include <libdlm.h>
 
 #include <syslog.h>
@@ -274,6 +282,10 @@ static int _init_cluster(void)
 {
 	cs_error_t err;
 
+#ifdef QUORUM_SET	/* corosync/quorum.h */
+	uint32_t quorum_type;
+#endif
+
 	node_hash = dm_hash_create(100);
 
 	err = cpg_initialize(&cpg_handle,
@@ -285,8 +297,21 @@ static int _init_cluster(void)
 		return cs_to_errno(err);
 	}
 
+#ifdef QUORUM_SET
+	err = quorum_initialize(&quorum_handle,
+				&quorum_callbacks,
+				&quorum_type);
+
+	if (quorum_type != QUORUM_SET) {
+		syslog(LOG_ERR, "Corosync quorum service is not configured");
+		DEBUGLOG("Corosync quorum service is not configured");
+		return EINVAL;
+	}
+#else
 	err = quorum_initialize(&quorum_handle,
 				&quorum_callbacks);
+#endif
+
 	if (err != CS_OK) {
 		syslog(LOG_ERR, "Cannot initialise Corosync quorum service: %d",
 		       err);
@@ -551,6 +576,7 @@ static int _cluster_send_message(const void *buf, int msglen, const char *csid,
 	return cs_to_errno(err);
 }
 
+#ifdef HAVE_COROSYNC_CONFDB_H
 /*
  * We are not necessarily connected to a Red Hat Cluster system,
  * but if we are, this returns the cluster name from cluster.conf.
@@ -597,6 +623,38 @@ out:
 	return 0;
 }
 
+#elif defined HAVE_COROSYNC_CMAP_H
+
+static int _get_cluster_name(char *buf, int buflen)
+{
+	cmap_handle_t cmap_handle = 0;
+	int result;
+	char *name = NULL;
+
+	/* This is a default in case everything else fails */
+	strncpy(buf, "Corosync", buflen);
+
+	/* Look for a cluster name in cmap */
+	result = cmap_initialize(&cmap_handle);
+	if (result != CS_OK)
+		return 0;
+
+	result = cmap_get_string(cmap_handle, "totem.cluster_name", &name);
+	if (result != CS_OK)
+		goto out;
+
+	memset(buf, 0, buflen);
+	strncpy(buf, name, buflen - 1);
+
+out:
+	if (name)
+		free(name);
+	cmap_finalize(cmap_handle);
+	return 0;
+}
+
+#endif
+
 static struct cluster_ops _cluster_corosync_ops = {
 	.name                     = "corosync",
 	.cluster_init_completed   = NULL,
-- 
cgit