1 files changed, 96 insertions, 0 deletions
diff --git a/security/selinux/exports.c b/security/selinux/exports.c
new file mode 100644
index 00000000000..9d7737db5e5
--- /dev/null
+++ b/security/selinux/exports.c
@@ -0,0 +1,96 @@
+/*
+ * SELinux services exported to the rest of the kernel.
+ *
+ * Author: James Morris <jmorris@redhat.com>
+ *
+ * Copyright (C) 2005 Red Hat, Inc., James Morris <jmorris@redhat.com>
+ * Copyright (C) 2006 Trusted Computer Solutions, Inc. <dgoeddel@trustedcs.com>
+ * Copyright (C) 2006 IBM Corporation, Timothy R. Chavez <tinytim@us.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2,
+ * as published by the Free Software Foundation.
+ */
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/selinux.h>
+#include <linux/fs.h>
+#include <linux/ipc.h>
+
+#include "security.h"
+#include "objsec.h"
+
+void selinux_task_ctxid(struct task_struct *tsk, u32 *ctxid)
+{
+	struct task_security_struct *tsec = tsk->security;
+	if (selinux_enabled)
+		*ctxid = tsec->sid;
+	else
+		*ctxid = 0;
+}
+
+int selinux_ctxid_to_string(u32 ctxid, char **ctx, u32 *ctxlen)
+{
+	if (selinux_enabled)
+		return security_sid_to_context(ctxid, ctx, ctxlen);
+	else {
+		*ctx = NULL;
+		*ctxlen = 0;
+	}
+
+	return 0;
+}
+
+void selinux_get_inode_sid(const struct inode *inode, u32 *sid)
+{
+	if (selinux_enabled) {
+		struct inode_security_struct *isec = inode->i_security;
+		*sid = isec->sid;
+		return;
+	}
+	*sid = 0;
+}
+
+void selinux_get_ipc_sid(const struct kern_ipc_perm *ipcp, u32 *sid)
+{
+	if (selinux_enabled) {
+		struct ipc_security_struct *isec = ipcp->security;
+		*sid = isec->sid;
+		return;
+	}
+	*sid = 0;
+}
+
+void selinux_get_task_sid(struct task_struct *tsk, u32 *sid)
+{
+	if (selinux_enabled) {
+		struct task_security_struct *tsec = tsk->security;
+		*sid = tsec->sid;
+		return;
+	}
+	*sid = 0;
+}
+
+int selinux_string_to_sid(char *str, u32 *sid)
+{
+	if (selinux_enabled)
+		return security_context_to_sid(str, strlen(str), sid);
+	else {
+		*sid = 0;
+		return 0;
+	}
+}
+EXPORT_SYMBOL_GPL(selinux_string_to_sid);
+
+int selinux_relabel_packet_permission(u32 sid)
+{
+	if (selinux_enabled) {
+		struct task_security_struct *tsec = current->security;
+
+		return avc_has_perm(tsec->sid, sid, SECCLASS_PACKET,
+				    PACKET__RELABELTO, NULL);
+	}
+	return 0;
+}
+EXPORT_SYMBOL_GPL(selinux_relabel_packet_permission);