1# SPDX-License-Identifier: GPL-2.0-only
2config SECURITY_SELINUX
3	bool "SELinux Support"
4	depends on SECURITY_NETWORK && AUDIT && NET && INET
5	select NETWORK_SECMARK
6	default n
7	help
8	  This selects Security-Enhanced Linux (SELinux).
9	  You will also need a policy configuration and a labeled filesystem.
10	  If you are unsure how to answer this question, answer N.
11
12config SECURITY_SELINUX_BOOTPARAM
13	bool "SELinux boot parameter"
14	depends on SECURITY_SELINUX
15	default n
16	help
17	  This option adds a kernel parameter 'selinux', which allows SELinux
18	  to be disabled at boot.  If this option is selected, SELinux
19	  functionality can be disabled with selinux=0 on the kernel
20	  command line.  The purpose of this option is to allow a single
21	  kernel image to be distributed with SELinux built in, but not
22	  necessarily enabled.
23
24	  If you are unsure how to answer this question, answer N.
25
26config SECURITY_SELINUX_DEVELOP
27	bool "SELinux Development Support"
28	depends on SECURITY_SELINUX
29	default y
30	help
31	  This enables the development support option of SELinux,
32	  which is useful for experimenting with SELinux and developing
33	  policies.  If unsure, say Y.  With this option enabled, the
34	  kernel will start in permissive mode (log everything, deny nothing)
35	  unless you specify enforcing=1 on the kernel command line.  You
36	  can interactively toggle the kernel between enforcing mode and
37	  permissive mode (if permitted by the policy) via
38	  /sys/fs/selinux/enforce.
39
40config SECURITY_SELINUX_AVC_STATS
41	bool "SELinux AVC Statistics"
42	depends on SECURITY_SELINUX
43	default y
44	help
45	  This option collects access vector cache statistics to
46	  /sys/fs/selinux/avc/cache_stats, which may be monitored via
47	  tools such as avcstat.
48
49config SECURITY_SELINUX_SIDTAB_HASH_BITS
50	int "SELinux sidtab hashtable size"
51	depends on SECURITY_SELINUX
52	range 8 13
53	default 9
54	help
55	  This option sets the number of buckets used in the sidtab hashtable
56	  to 2^SECURITY_SELINUX_SIDTAB_HASH_BITS buckets. The number of hash
57	  collisions may be viewed at /sys/fs/selinux/ss/sidtab_hash_stats. If
58	  chain lengths are high (e.g. > 20) then selecting a higher value here
59	  will ensure that lookups times are short and stable.
60
61config SECURITY_SELINUX_SID2STR_CACHE_SIZE
62	int "SELinux SID to context string translation cache size"
63	depends on SECURITY_SELINUX
64	default 256
65	help
66	  This option defines the size of the internal SID -> context string
67	  cache, which improves the performance of context to string
68	  conversion.  Setting this option to 0 disables the cache completely.
69
70	  If unsure, keep the default value.
71
72config SECURITY_SELINUX_DEBUG
73	bool "SELinux kernel debugging support"
74	depends on SECURITY_SELINUX
75	default n
76	help
77	  This enables debugging code designed to help SELinux kernel
78	  developers, unless you know what this does in the kernel code you
79	  should leave this disabled.
80