security: remove root_plug

    Remove the root_plug example LSM code.  It's unmaintained and
    increasingly broken in various ways.

    Made at the 2009 Kernel Summit in Tokyo!

    Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
    Signed-off-by: James Morris <jmorris@namei.org>

Documentation/kernel-parameters.txt

@@ -85,7 +85,6 @@ parameter is applicable:
 	PPT	Parallel port support is enabled.
 	PS2	Appropriate PS/2 support is enabled.
 	RAM	RAM disk support is enabled.
-	ROOTPLUG The example Root Plug LSM is enabled.
 	S390	S390 architecture is enabled.
 	SCSI	Appropriate SCSI support is enabled.
 			A lot of drivers has their options described inside of
@@ -2163,15 +2162,6 @@ and is between 256 and 4096 characters. It is defined in the file
 			Useful for devices that are detected asynchronously
 			(e.g. USB and MMC devices).
 
-	root_plug.vendor_id=
-			[ROOTPLUG] Override the default vendor ID
-
-	root_plug.product_id=
-			[ROOTPLUG] Override the default product ID
-
-	root_plug.debug=
-			[ROOTPLUG] Enable debugging output
-
 	rw		[KNL] Mount root device read-write on boot
 
 	S		[KNL] Run init in single mode

security/Kconfig

@@ -100,19 +100,6 @@ config SECURITY_FILE_CAPABILITIES
 
 	  If in doubt, answer N.
 
-config SECURITY_ROOTPLUG
-	bool "Root Plug Support"
-	depends on USB=y && SECURITY
-	help
-	  This is a sample LSM module that should only be used as such.
-	  It prevents any programs running with egid == 0 if a specific
-	  USB device is not present in the system.
-
-	  See <http://www.linuxjournal.com/article.php?sid=6279> for
-	  more information about this module.
-
-	  If you are unsure how to answer this question, answer N.
-
 config INTEL_TXT
 	bool "Enable Intel(R) Trusted Execution Technology (Intel(R) TXT)"
 	depends on HAVE_INTEL_TXT

security/Makefile

@@ -18,7 +18,6 @@ obj-$(CONFIG_SECURITY_SELINUX)		+= selinux/built-in.o
 obj-$(CONFIG_SECURITY_SMACK)		+= smack/built-in.o
 obj-$(CONFIG_AUDIT)			+= lsm_audit.o
 obj-$(CONFIG_SECURITY_TOMOYO)		+= tomoyo/built-in.o
-obj-$(CONFIG_SECURITY_ROOTPLUG)		+= root_plug.o
 obj-$(CONFIG_CGROUP_DEVICE)		+= device_cgroup.o
 
 # Object integrity file lists

security/commoncap.c

@@ -1,4 +1,4 @@
-/* Common capabilities, needed by capability.o and root_plug.o
+/* Common capabilities, needed by capability.o.
  *
  *	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