LXR linux/security/selinux/Kconfig

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