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 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. 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. 133 134