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usr
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src
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kernels
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4.18.0-553.121.1.el8_10.x86_64
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security
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selinux
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/usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/security/selinux
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/usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/security/selinux/Kconfig
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config SECURITY_SELINUX bool "NSA SELinux Support" depends on SECURITY_NETWORK && AUDIT && NET && INET select NETWORK_SECMARK default n help This selects NSA Security-Enhanced Linux (SELinux). You will also need a policy configuration and a labeled filesystem. 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_DISABLE bool "NSA SELinux runtime disable" depends on SECURITY_SELINUX select SECURITY_WRITABLE_HOOKS 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. NOTE: selecting this option will disable the '__ro_after_init' kernel hardening feature for security hooks. Please consider using the selinux=0 boot parameter instead of enabling this option. 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 /sys/fs/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 /sys/fs/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 0 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 /sys/fs/selinux/checkreqprot if authorized by policy. If you are unsure how to answer this question, answer 0. config SECURITY_SELINUX_SIDTAB_HASH_BITS int "NSA SELinux sidtab hashtable size" depends on SECURITY_SELINUX range 8 13 default 9 help This option sets the number of buckets used in the sidtab hashtable to 2^SECURITY_SELINUX_SIDTAB_HASH_BITS buckets. The number of hash collisions may be viewed at /sys/fs/selinux/ss/sidtab_hash_stats. If chain lengths are high (e.g. > 20) then selecting a higher value here will ensure that lookups times are short and stable. config SECURITY_SELINUX_SID2STR_CACHE_SIZE int "NSA SELinux SID to context string translation cache size" depends on SECURITY_SELINUX default 256 help This option defines the size of the internal SID -> context string cache, which improves the performance of context to string conversion. Setting this option to 0 disables the cache completely. If unsure, keep the default value.
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