1 files changed, 55 insertions, 0 deletions
diff --git a/security/apparmor/secid.c b/security/apparmor/secid.c
new file mode 100644
index 000000000000..3a3edbad0b21
--- /dev/null
+++ b/security/apparmor/secid.c
@@ -0,0 +1,55 @@
+/*
+ * AppArmor security module
+ *
+ * This file contains AppArmor security identifier (secid) manipulation fns
+ *
+ * Copyright 2009-2010 Canonical Ltd.
+ *
+ * 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.
+ *
+ *
+ * AppArmor allocates a unique secid for every profile loaded.  If a profile
+ * is replaced it receives the secid of the profile it is replacing.
+ *
+ * The secid value of 0 is invalid.
+ */
+
+#include <linux/spinlock.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+
+#include "include/secid.h"
+
+/* global counter from which secids are allocated */
+static u32 global_secid;
+static DEFINE_SPINLOCK(secid_lock);
+
+/* TODO FIXME: add secid to profile mapping, and secid recycling */
+
+/**
+ * aa_alloc_secid - allocate a new secid for a profile
+ */
+u32 aa_alloc_secid(void)
+{
+	u32 secid;
+
+	/*
+	 * TODO FIXME: secid recycling - part of profile mapping table
+	 */
+	spin_lock(&secid_lock);
+	secid = (++global_secid);
+	spin_unlock(&secid_lock);
+	return secid;
+}
+
+/**
+ * aa_free_secid - free a secid
+ * @secid: secid to free
+ */
+void aa_free_secid(u32 secid)
+{
+	;			/* NOP ATM */
+}