Commit | Line | Data |
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1da177e4 LT |
1 | config SECURITY_SELINUX |
2 | bool "NSA SELinux Support" | |
99f6d61b | 3 | depends on SECURITY_NETWORK && AUDIT && NET && INET |
4e5ab4cb | 4 | select NETWORK_SECMARK |
1da177e4 LT |
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. | |
1da177e4 LT |
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 | |
dd0859dc | 43 | select SECURITY_WRITABLE_HOOKS |
1da177e4 LT |
44 | default n |
45 | help | |
46 | This option enables writing to a selinuxfs node 'disable', which | |
47 | allows SELinux to be disabled at runtime prior to the policy load. | |
48 | SELinux will then remain disabled until the next boot. | |
49 | This option is similar to the selinux=0 boot parameter, but is to | |
50 | support runtime disabling of SELinux, e.g. from /sbin/init, for | |
51 | portability across platforms where boot parameters are difficult | |
52 | to employ. | |
53 | ||
dd0859dc JM |
54 | NOTE: selecting this option will disable the '__ro_after_init' |
55 | kernel hardening feature for security hooks. Please consider | |
56 | using the selinux=0 boot parameter instead of enabling this | |
57 | option. | |
58 | ||
1da177e4 LT |
59 | If you are unsure how to answer this question, answer N. |
60 | ||
61 | config SECURITY_SELINUX_DEVELOP | |
62 | bool "NSA SELinux Development Support" | |
63 | depends on SECURITY_SELINUX | |
64 | default y | |
65 | help | |
66 | This enables the development support option of NSA SELinux, | |
67 | which is useful for experimenting with SELinux and developing | |
68 | policies. If unsure, say Y. With this option enabled, the | |
69 | kernel will start in permissive mode (log everything, deny nothing) | |
70 | unless you specify enforcing=1 on the kernel command line. You | |
71 | can interactively toggle the kernel between enforcing mode and | |
72 | permissive mode (if permitted by the policy) via /selinux/enforce. | |
73 | ||
74 | config SECURITY_SELINUX_AVC_STATS | |
75 | bool "NSA SELinux AVC Statistics" | |
76 | depends on SECURITY_SELINUX | |
77 | default y | |
78 | help | |
79 | This option collects access vector cache statistics to | |
80 | /selinux/avc/cache_stats, which may be monitored via | |
81 | tools such as avcstat. | |
82 | ||
83 | config SECURITY_SELINUX_CHECKREQPROT_VALUE | |
84 | int "NSA SELinux checkreqprot default value" | |
85 | depends on SECURITY_SELINUX | |
86 | range 0 1 | |
2a35d196 | 87 | default 0 |
1da177e4 LT |
88 | help |
89 | This option sets the default value for the 'checkreqprot' flag | |
90 | that determines whether SELinux checks the protection requested | |
91 | by the application or the protection that will be applied by the | |
92 | kernel (including any implied execute for read-implies-exec) for | |
93 | mmap and mprotect calls. If this option is set to 0 (zero), | |
94 | SELinux will default to checking the protection that will be applied | |
95 | by the kernel. If this option is set to 1 (one), SELinux will | |
96 | default to checking the protection requested by the application. | |
97 | The checkreqprot flag may be changed from the default via the | |
98 | 'checkreqprot=' boot parameter. It may also be changed at runtime | |
99 | via /selinux/checkreqprot if authorized by policy. | |
100 | ||
2a35d196 | 101 | If you are unsure how to answer this question, answer 0. |