linux/security/selinux/Kconfig
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   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_BOOTPARAM_VALUE
  26        int "NSA SELinux boot parameter default value"
  27        depends on SECURITY_SELINUX_BOOTPARAM
  28        range 0 1
  29        default 1
  30        help
  31          This option sets the default value for the kernel parameter
  32          'selinux', which allows SELinux to be disabled at boot.  If this
  33          option is set to 0 (zero), the SELinux kernel parameter will
  34          default to 0, disabling SELinux at bootup.  If this option is
  35          set to 1 (one), the SELinux kernel parameter will default to 1,
  36          enabling SELinux at bootup.
  37
  38          If you are unsure how to answer this question, answer 1.
  39
  40config SECURITY_SELINUX_DISABLE
  41        bool "NSA SELinux runtime disable"
  42        depends on SECURITY_SELINUX
  43        default n
  44        help
  45          This option enables writing to a selinuxfs node 'disable', which
  46          allows SELinux to be disabled at runtime prior to the policy load.
  47          SELinux will then remain disabled until the next boot.
  48          This option is similar to the selinux=0 boot parameter, but is to
  49          support runtime disabling of SELinux, e.g. from /sbin/init, for
  50          portability across platforms where boot parameters are difficult
  51          to employ.
  52
  53          If you are unsure how to answer this question, answer N.
  54
  55config SECURITY_SELINUX_DEVELOP
  56        bool "NSA SELinux Development Support"
  57        depends on SECURITY_SELINUX
  58        default y
  59        help
  60          This enables the development support option of NSA SELinux,
  61          which is useful for experimenting with SELinux and developing
  62          policies.  If unsure, say Y.  With this option enabled, the
  63          kernel will start in permissive mode (log everything, deny nothing)
  64          unless you specify enforcing=1 on the kernel command line.  You
  65          can interactively toggle the kernel between enforcing mode and
  66          permissive mode (if permitted by the policy) via /selinux/enforce.
  67
  68config SECURITY_SELINUX_AVC_STATS
  69        bool "NSA SELinux AVC Statistics"
  70        depends on SECURITY_SELINUX
  71        default y
  72        help
  73          This option collects access vector cache statistics to
  74          /selinux/avc/cache_stats, which may be monitored via
  75          tools such as avcstat.
  76
  77config SECURITY_SELINUX_CHECKREQPROT_VALUE
  78        int "NSA SELinux checkreqprot default value"
  79        depends on SECURITY_SELINUX
  80        range 0 1
  81        default 1
  82        help
  83          This option sets the default value for the 'checkreqprot' flag
  84          that determines whether SELinux checks the protection requested
  85          by the application or the protection that will be applied by the
  86          kernel (including any implied execute for read-implies-exec) for
  87          mmap and mprotect calls.  If this option is set to 0 (zero),
  88          SELinux will default to checking the protection that will be applied
  89          by the kernel.  If this option is set to 1 (one), SELinux will
  90          default to checking the protection requested by the application.
  91          The checkreqprot flag may be changed from the default via the
  92          'checkreqprot=' boot parameter.  It may also be changed at runtime
  93          via /selinux/checkreqprot if authorized by policy.
  94
  95          If you are unsure how to answer this question, answer 1.
  96
  97config SECURITY_SELINUX_POLICYDB_VERSION_MAX
  98        bool "NSA SELinux maximum supported policy format version"
  99        depends on SECURITY_SELINUX
 100        default n
 101        help
 102          This option enables the maximum policy format version supported
 103          by SELinux to be set to a particular value.  This value is reported
 104          to userspace via /selinux/policyvers and used at policy load time.
 105          It can be adjusted downward to support legacy userland (init) that
 106          does not correctly handle kernels that support newer policy versions.
 107
 108          Examples:
 109          For the Fedora Core 3 or 4 Linux distributions, enable this option
 110          and set the value via the next option. For Fedora Core 5 and later,
 111          do not enable this option.
 112
 113          If you are unsure how to answer this question, answer N.
 114
 115config SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE
 116        int "NSA SELinux maximum supported policy format version value"
 117        depends on SECURITY_SELINUX_POLICYDB_VERSION_MAX
 118        range 15 23
 119        default 19
 120        help
 121          This option sets the value for the maximum policy format version
 122          supported by SELinux.
 123
 124          Examples:
 125          For Fedora Core 3, use 18.
 126          For Fedora Core 4, use 19.
 127
 128          If you are unsure how to answer this question, look for the
 129          policy format version supported by your policy toolchain, by
 130          running 'checkpolicy -V'. Or look at what policy you have
 131          installed under /etc/selinux/$SELINUXTYPE/policy, where
 132          SELINUXTYPE is defined in your /etc/selinux/config.
 133
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