1 files changed, 76 insertions, 0 deletions
diff --git a/xen/acm/acm_null_hooks.c b/xen/acm/acm_null_hooks.c
new file mode 100644
index 0000000000..6433cbfed6
--- /dev/null
+++ b/xen/acm/acm_null_hooks.c
@@ -0,0 +1,76 @@
+/****************************************************************
+ * acm_null_hooks.c
+ * 
+ * Copyright (C) 2005 IBM Corporation
+ *
+ * Author:
+ * Reiner Sailer <sailer@watson.ibm.com>
+ *
+ * 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, version 2 of the
+ * License.
+ */
+#include <acm/acm_hooks.h>
+
+static int
+null_init_domain_ssid(void **chwall_ssid, ssidref_t ssidref)
+{
+	return ACM_OK;
+}
+
+
+static void
+null_free_domain_ssid(void *chwall_ssid)
+{
+	return;
+}
+
+
+static int
+null_dump_binary_policy(u8 *buf, u16 buf_size) 
+{	
+	return 0;
+}
+
+
+
+static int
+null_set_binary_policy(u8 *buf, u16 buf_size) 
+{	
+	return -1;
+}
+
+	
+static int 
+null_dump_stats(u8 *buf, u16 buf_size)
+{
+	/* no stats for NULL policy */
+	return 0;
+}
+
+
+/* now define the hook structure similarly to LSM */
+struct acm_operations acm_null_ops = {
+	.init_domain_ssid		= null_init_domain_ssid,
+	.free_domain_ssid		= null_free_domain_ssid,
+	.dump_binary_policy           	= null_dump_binary_policy,
+	.set_binary_policy		= null_set_binary_policy,
+	.dump_statistics	        = null_dump_stats,
+	/* domain management control hooks */
+	.pre_domain_create     		= NULL,
+	.post_domain_create		= NULL,
+	.fail_domain_create		= NULL,
+	.post_domain_destroy		= NULL,
+	/* event channel control hooks */
+	.pre_eventchannel_unbound      	= NULL,
+	.fail_eventchannel_unbound	= NULL,
+	.pre_eventchannel_interdomain	= NULL,
+	.fail_eventchannel_interdomain	= NULL,
+	/* grant table control hooks */
+	.pre_grant_map_ref       	= NULL,
+	.fail_grant_map_ref		= NULL,
+	.pre_grant_setup	       	= NULL,
+	.fail_grant_setup		= NULL
+
+};