SELinux: Remove unused selinux_is_enabled

There are no longer users of selinux_is_enabled().
Remove it. As selinux_is_enabled() is the only reason
for include/linux/selinux.h remove that as well.
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>

include/linux/cred.h

@@ -15,7 +15,6 @@
 #include <linux/capability.h>
 #include <linux/init.h>
 #include <linux/key.h>
-#include <linux/selinux.h>
 #include <linux/atomic.h>
 #include <linux/uidgid.h>
 #include <linux/sched.h>

include/linux/selinux.h

-/*
- * 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.
- */
-#ifndef _LINUX_SELINUX_H
-#define _LINUX_SELINUX_H
-
-struct selinux_audit_rule;
-struct audit_context;
-struct kern_ipc_perm;
-
-#ifdef CONFIG_SECURITY_SELINUX
-
-/**
- * selinux_is_enabled - is SELinux enabled?
- */
-bool selinux_is_enabled(void);
-#else
-
-static inline bool selinux_is_enabled(void)
-{
-	return false;
-}
-#endif	/* CONFIG_SECURITY_SELINUX */
-
-#endif /* _LINUX_SELINUX_H */

security/selinux/Makefile

@@ -6,7 +6,7 @@
 obj-$(CONFIG_SECURITY_SELINUX) := selinux.o
 
 selinux-y := avc.o hooks.o selinuxfs.o netlink.o nlmsgtab.o netif.o \
-	     netnode.o netport.o ibpkey.o exports.o \
+	     netnode.o netport.o ibpkey.o \
 	     ss/ebitmap.o ss/hashtab.o ss/symtab.o ss/sidtab.o ss/avtab.o \
 	     ss/policydb.o ss/services.o ss/conditional.o ss/mls.o ss/status.o
 

security/selinux/exports.c

-/*
- * 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/module.h>
-#include <linux/selinux.h>
-
-#include "security.h"
-
-bool selinux_is_enabled(void)
-{
-	return selinux_enabled;
-}
-EXPORT_SYMBOL_GPL(selinux_is_enabled);

security/selinux/hooks.c

@@ -79,7 +79,6 @@
 #include <linux/personality.h>
 #include <linux/audit.h>
 #include <linux/string.h>
-#include <linux/selinux.h>
 #include <linux/mutex.h>
 #include <linux/posix-timers.h>
 #include <linux/syslog.h>

security/selinux/include/audit.h

 /*
  * SELinux support for the Audit LSM hooks
  *
- * Most of below header was moved from include/linux/selinux.h which
- * is released under below copyrights:
- *
  * Author: James Morris <jmorris@redhat.com>
  *
  * Copyright (C) 2005 Red Hat, Inc., James Morris <jmorris@redhat.com>

security/selinux/ss/services.c

@@ -49,7 +49,6 @@
 #include <linux/sched.h>
 #include <linux/audit.h>
 #include <linux/mutex.h>
-#include <linux/selinux.h>
 #include <linux/flex_array.h>
 #include <linux/vmalloc.h>
 #include <net/netlabel.h>