1config SECURITY_SELINUX 2 bool "NSA SELinux Support" 3 depends on SECURITY_NETWORK && AUDIT && NET && INET 4 default n 5 help 6 This selects NSA Security-Enhanced Linux (SELinux). 7 You will also need a policy configuration and a labeled filesystem. 8 You can obtain the policy compiler (checkpolicy), the utility for 9 labeling filesystems (setfiles), and an example policy configuration 10 from <http://www.nsa.gov/selinux/>. 11 If you are unsure how to answer this question, answer N. 12 13config SECURITY_SELINUX_BOOTPARAM 14 bool "NSA SELinux boot parameter" 15 depends on SECURITY_SELINUX 16 default n 17 help 18 This option adds a kernel parameter 'selinux', which allows SELinux 19 to be disabled at boot. If this option is selected, SELinux 20 functionality can be disabled with selinux=0 on the kernel 21 command line. The purpose of this option is to allow a single 22 kernel image to be distributed with SELinux built in, but not 23 necessarily enabled. 24 25 If you are unsure how to answer this question, answer N. 26 27config SECURITY_SELINUX_BOOTPARAM_VALUE 28 int "NSA SELinux boot parameter default value" 29 depends on SECURITY_SELINUX_BOOTPARAM 30 range 0 1 31 default 1 32 help 33 This option sets the default value for the kernel parameter 34 'selinux', which allows SELinux to be disabled at boot. If this 35 option is set to 0 (zero), the SELinux kernel parameter will 36 default to 0, disabling SELinux at bootup. If this option is 37 set to 1 (one), the SELinux kernel parameter will default to 1, 38 enabling SELinux at bootup. 39 40 If you are unsure how to answer this question, answer 1. 41 42config SECURITY_SELINUX_DISABLE 43 bool "NSA SELinux runtime disable" 44 depends on SECURITY_SELINUX 45 default n 46 help 47 This option enables writing to a selinuxfs node 'disable', which 48 allows SELinux to be disabled at runtime prior to the policy load. 49 SELinux will then remain disabled until the next boot. 50 This option is similar to the selinux=0 boot parameter, but is to 51 support runtime disabling of SELinux, e.g. from /sbin/init, for 52 portability across platforms where boot parameters are difficult 53 to employ. 54 55 If you are unsure how to answer this question, answer N. 56 57config SECURITY_SELINUX_DEVELOP 58 bool "NSA SELinux Development Support" 59 depends on SECURITY_SELINUX 60 default y 61 help 62 This enables the development support option of NSA SELinux, 63 which is useful for experimenting with SELinux and developing 64 policies. If unsure, say Y. With this option enabled, the 65 kernel will start in permissive mode (log everything, deny nothing) 66 unless you specify enforcing=1 on the kernel command line. You 67 can interactively toggle the kernel between enforcing mode and 68 permissive mode (if permitted by the policy) via /selinux/enforce. 69 70config SECURITY_SELINUX_AVC_STATS 71 bool "NSA SELinux AVC Statistics" 72 depends on SECURITY_SELINUX 73 default y 74 help 75 This option collects access vector cache statistics to 76 /selinux/avc/cache_stats, which may be monitored via 77 tools such as avcstat. 78 79config SECURITY_SELINUX_CHECKREQPROT_VALUE 80 int "NSA SELinux checkreqprot default value" 81 depends on SECURITY_SELINUX 82 range 0 1 83 default 1 84 help 85 This option sets the default value for the 'checkreqprot' flag 86 that determines whether SELinux checks the protection requested 87 by the application or the protection that will be applied by the 88 kernel (including any implied execute for read-implies-exec) for 89 mmap and mprotect calls. If this option is set to 0 (zero), 90 SELinux will default to checking the protection that will be applied 91 by the kernel. If this option is set to 1 (one), SELinux will 92 default to checking the protection requested by the application. 93 The checkreqprot flag may be changed from the default via the 94 'checkreqprot=' boot parameter. It may also be changed at runtime 95 via /selinux/checkreqprot if authorized by policy. 96 97 If you are unsure how to answer this question, answer 1. 98