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