[linux.git] / security / selinux / Kconfig

config SECURITY_SELINUX
	bool "NSA SELinux Support"
	depends on SECURITY && NET && INET
	default n
	help
	  This selects NSA Security-Enhanced Linux (SELinux).
	  You will also need a policy configuration and a labeled filesystem.
	  You can obtain the policy compiler (checkpolicy), the utility for
	  labeling filesystems (setfiles), and an example policy configuration
	  from <http://www.nsa.gov/selinux/>.
	  If you are unsure how to answer this question, answer N.

config SECURITY_SELINUX_BOOTPARAM
	bool "NSA SELinux boot parameter"
	depends on SECURITY_SELINUX
	default n
	help
	  This option adds a kernel parameter 'selinux', which allows SELinux
	  to be disabled at boot.  If this option is selected, SELinux
	  functionality can be disabled with selinux=0 on the kernel
	  command line.  The purpose of this option is to allow a single
	  kernel image to be distributed with SELinux built in, but not
	  necessarily enabled.

	  If you are unsure how to answer this question, answer N.

config SECURITY_SELINUX_BOOTPARAM_VALUE
	int "NSA SELinux boot parameter default value"
	depends on SECURITY_SELINUX_BOOTPARAM
	range 0 1
	default 1
	help
	  This option sets the default value for the kernel parameter
	  'selinux', which allows SELinux to be disabled at boot.  If this
	  option is set to 0 (zero), the SELinux kernel parameter will
	  default to 0, disabling SELinux at bootup.  If this option is
	  set to 1 (one), the SELinux kernel parameter will default to 1,
	  enabling SELinux at bootup.

	  If you are unsure how to answer this question, answer 1.

config SECURITY_SELINUX_DISABLE
	bool "NSA SELinux runtime disable"
	depends on SECURITY_SELINUX
	default n
	help
	  This option enables writing to a selinuxfs node 'disable', which
	  allows SELinux to be disabled at runtime prior to the policy load.
	  SELinux will then remain disabled until the next boot.
	  This option is similar to the selinux=0 boot parameter, but is to
	  support runtime disabling of SELinux, e.g. from /sbin/init, for
	  portability across platforms where boot parameters are difficult
	  to employ.

	  If you are unsure how to answer this question, answer N.

config SECURITY_SELINUX_DEVELOP
	bool "NSA SELinux Development Support"
	depends on SECURITY_SELINUX
	default y
	help
	  This enables the development support option of NSA SELinux,
	  which is useful for experimenting with SELinux and developing
	  policies.  If unsure, say Y.  With this option enabled, the
	  kernel will start in permissive mode (log everything, deny nothing)
	  unless you specify enforcing=1 on the kernel command line.  You
	  can interactively toggle the kernel between enforcing mode and
	  permissive mode (if permitted by the policy) via /selinux/enforce.

config SECURITY_SELINUX_AVC_STATS
	bool "NSA SELinux AVC Statistics"
	depends on SECURITY_SELINUX
	default y
	help
	  This option collects access vector cache statistics to
	  /selinux/avc/cache_stats, which may be monitored via
	  tools such as avcstat.

config SECURITY_SELINUX_CHECKREQPROT_VALUE
	int "NSA SELinux checkreqprot default value"
	depends on SECURITY_SELINUX
	range 0 1
	default 1
	help
	  This option sets the default value for the 'checkreqprot' flag
	  that determines whether SELinux checks the protection requested
	  by the application or the protection that will be applied by the
	  kernel (including any implied execute for read-implies-exec) for
	  mmap and mprotect calls.  If this option is set to 0 (zero),
	  SELinux will default to checking the protection that will be applied
	  by the kernel.  If this option is set to 1 (one), SELinux will
	  default to checking the protection requested by the application.
	  The checkreqprot flag may be changed from the default via the
	  'checkreqprot=' boot parameter.  It may also be changed at runtime
	  via /selinux/checkreqprot if authorized by policy.

	  If you are unsure how to answer this question, answer 1.
Commit	Line	Data
1da177e4 LT	1	config SECURITY_SELINUX
	2	bool "NSA SELinux Support"
	3	depends on SECURITY && NET && INET
	4	default n
	5	help
	6	This selects NSA Security-Enhanced Linux (SELinux).
	7	You will also need a policy configuration and a labeled filesystem.
	8	You can obtain the policy compiler (checkpolicy), the utility for
	9	labeling filesystems (setfiles), and an example policy configuration
	10	from <http://www.nsa.gov/selinux/>.
	11	If you are unsure how to answer this question, answer N.
	12
	13	config SECURITY_SELINUX_BOOTPARAM
	14	bool "NSA SELinux boot parameter"
	15	depends on SECURITY_SELINUX
	16	default n
	17	help
	18	This option adds a kernel parameter 'selinux', which allows SELinux
	19	to be disabled at boot. If this option is selected, SELinux
	20	functionality can be disabled with selinux=0 on the kernel
	21	command line. The purpose of this option is to allow a single
	22	kernel image to be distributed with SELinux built in, but not
	23	necessarily enabled.
	24
	25	If you are unsure how to answer this question, answer N.
	26
	27	config SECURITY_SELINUX_BOOTPARAM_VALUE
	28	int "NSA SELinux boot parameter default value"
	29	depends on SECURITY_SELINUX_BOOTPARAM
	30	range 0 1
	31	default 1
	32	help
	33	This option sets the default value for the kernel parameter
	34	'selinux', which allows SELinux to be disabled at boot. If this
	35	option is set to 0 (zero), the SELinux kernel parameter will
	36	default to 0, disabling SELinux at bootup. If this option is
	37	set to 1 (one), the SELinux kernel parameter will default to 1,
	38	enabling SELinux at bootup.
	39
	40	If you are unsure how to answer this question, answer 1.
	41
	42	config SECURITY_SELINUX_DISABLE
	43	bool "NSA SELinux runtime disable"
	44	depends on SECURITY_SELINUX
	45	default n
	46	help
	47	This option enables writing to a selinuxfs node 'disable', which
	48	allows SELinux to be disabled at runtime prior to the policy load.
	49	SELinux will then remain disabled until the next boot.
	50	This option is similar to the selinux=0 boot parameter, but is to
	51	support runtime disabling of SELinux, e.g. from /sbin/init, for
	52	portability across platforms where boot parameters are difficult
	53	to employ.
	54
	55	If you are unsure how to answer this question, answer N.
	56
	57	config SECURITY_SELINUX_DEVELOP
	58	bool "NSA SELinux Development Support"
	59	depends on SECURITY_SELINUX
	60	default y
	61	help
	62	This enables the development support option of NSA SELinux,
	63	which is useful for experimenting with SELinux and developing
	64	policies. If unsure, say Y. With this option enabled, the
65	kernel will start in permissive mode (log everything, deny nothing)
66	unless you specify enforcing=1 on the kernel command line. You
67	can interactively toggle the kernel between enforcing mode and
68	permissive mode (if permitted by the policy) via /selinux/enforce.
69
70	config SECURITY_SELINUX_AVC_STATS
71	bool "NSA SELinux AVC Statistics"
72	depends on SECURITY_SELINUX
73	default y
74	help
75	This option collects access vector cache statistics to
76	/selinux/avc/cache_stats, which may be monitored via
77	tools such as avcstat.
78
79	config SECURITY_SELINUX_CHECKREQPROT_VALUE
80	int "NSA SELinux checkreqprot default value"
81	depends on SECURITY_SELINUX
82	range 0 1
83	default 1
84	help
85	This option sets the default value for the 'checkreqprot' flag
86	that determines whether SELinux checks the protection requested
87	by the application or the protection that will be applied by the
88	kernel (including any implied execute for read-implies-exec) for
89	mmap and mprotect calls. If this option is set to 0 (zero),
90	SELinux will default to checking the protection that will be applied
91	by the kernel. If this option is set to 1 (one), SELinux will
92	default to checking the protection requested by the application.
93	The checkreqprot flag may be changed from the default via the
94	'checkreqprot=' boot parameter. It may also be changed at runtime
95	via /selinux/checkreqprot if authorized by policy.
96
97	If you are unsure how to answer this question, answer 1.