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Linux/security/selinux/Kconfig

  1 config 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 
 11 config 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 
 25 config 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 
 40 config 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 
 55 config 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 
 68 config 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 
 77 config SECURITY_SELINUX_CHECKREQPROT_VALUE
 78         int "NSA SELinux checkreqprot default value"
 79         depends on SECURITY_SELINUX
 80         range 0 1
 81         default 0
 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 0.

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