From 7c6538280ae99eaebd589a5c029e1ed1c063909c Mon Sep 17 00:00:00 2001
From: Casey Schaufler <casey@schaufler-ca.com>
Date: Fri, 21 Sep 2018 17:19:45 -0700
Subject: SELinux: Abstract use of ipc security blobs

Don't use the ipc->security pointer directly.
Don't use the msg_msg->security pointer directly.
Provide helper functions that provides the security blob pointers.

Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
---
 security/selinux/include/objsec.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'security/selinux/include/objsec.h')

diff --git a/security/selinux/include/objsec.h b/security/selinux/include/objsec.h
index 562fad58c56b..539cacf4a572 100644
--- a/security/selinux/include/objsec.h
+++ b/security/selinux/include/objsec.h
@@ -26,6 +26,7 @@
 #include <linux/in.h>
 #include <linux/spinlock.h>
 #include <linux/lsm_hooks.h>
+#include <linux/msg.h>
 #include <net/net_namespace.h>
 #include "flask.h"
 #include "avc.h"
@@ -175,4 +176,16 @@ static inline struct inode_security_struct *selinux_inode(
 	return inode->i_security + selinux_blob_sizes.lbs_inode;
 }
 
+static inline struct msg_security_struct *selinux_msg_msg(
+						const struct msg_msg *msg_msg)
+{
+	return msg_msg->security;
+}
+
+static inline struct ipc_security_struct *selinux_ipc(
+						const struct kern_ipc_perm *ipc)
+{
+	return ipc->security;
+}
+
 #endif /* _SELINUX_OBJSEC_H_ */
-- 
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