1 files changed, 80 insertions, 0 deletions
diff --git a/libglusterfs/src/scheduler.c b/libglusterfs/src/scheduler.c
new file mode 100644
index 00000000000..3478a938584
--- /dev/null
+++ b/libglusterfs/src/scheduler.c
@@ -0,0 +1,80 @@
+/*
+   Copyright (c) 2006, 2007, 2008 Z RESEARCH, Inc. <http://www.zresearch.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 _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include <dlfcn.h>
+#include <netdb.h>
+#include "xlator.h"
+#include "scheduler.h"
+#include "list.h"
+
+struct sched_ops *
+get_scheduler (xlator_t *xl, const char *name)
+{
+	struct sched_ops  *tmp_sched = NULL;
+	volume_opt_list_t *vol_opt   = NULL;
+	char *sched_file             = NULL;
+	void *handle                 = NULL;
+  
+	if (name == NULL) {
+		gf_log ("scheduler", GF_LOG_ERROR, 
+			"'name' not specified, EINVAL");
+		return NULL;
+	}
+  
+	asprintf (&sched_file, "%s/%s.so", SCHEDULERDIR, name);
+
+	gf_log ("scheduler", GF_LOG_DEBUG,
+		"attempt to load file %s.so", name);
+
+	handle = dlopen (sched_file, RTLD_LAZY);
+	if (!handle) {
+		gf_log ("scheduler", GF_LOG_ERROR,
+			"dlopen(%s): %s", sched_file, dlerror ());
+		return NULL;
+	}
+
+	tmp_sched = dlsym (handle, "sched");
+	if (!tmp_sched) {
+		gf_log ("scheduler", GF_LOG_ERROR,
+			"dlsym(sched) on %s", dlerror ());
+		return NULL;
+	}
+  
+	vol_opt = CALLOC (1, sizeof (volume_opt_list_t));
+	vol_opt->given_opt = dlsym (handle, "options");
+	if (vol_opt->given_opt == NULL) {
+		gf_log ("scheduler", GF_LOG_DEBUG,
+			"volume option validation not specified");
+	} else {
+		list_add_tail (&vol_opt->list, &xl->volume_options);
+		if (validate_xlator_volume_options (xl, vol_opt->given_opt)
+		    == -1) {
+			gf_log ("scheduler", GF_LOG_ERROR,
+				"volume option validation failed");
+			return NULL;
+		}
+	}
+	
+	return tmp_sched;
+}