1 config SECURITY_SELINUX
2 bool "NSA SELinux Support"
3 depends on SECURITY_NETWORK && AUDIT && NET && INET
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.
11 config SECURITY_SELINUX_BOOTPARAM
12 bool "NSA SELinux boot parameter"
13 depends on SECURITY_SELINUX
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
23 If you are unsure how to answer this question, answer N.
25 config SECURITY_SELINUX_BOOTPARAM_VALUE
26 int "NSA SELinux boot parameter default value"
27 depends on SECURITY_SELINUX_BOOTPARAM
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.
38 If you are unsure how to answer this question, answer 1.
40 config SECURITY_SELINUX_DISABLE
41 bool "NSA SELinux runtime disable"
42 depends on SECURITY_SELINUX
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
53 If you are unsure how to answer this question, answer N.
55 config SECURITY_SELINUX_DEVELOP
56 bool "NSA SELinux Development Support"
57 depends on SECURITY_SELINUX
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.
68 config SECURITY_SELINUX_AVC_STATS
69 bool "NSA SELinux AVC Statistics"
70 depends on SECURITY_SELINUX
73 This option collects access vector cache statistics to
74 /selinux/avc/cache_stats, which may be monitored via
75 tools such as avcstat.
77 config SECURITY_SELINUX_CHECKREQPROT_VALUE
78 int "NSA SELinux checkreqprot default value"
79 depends on SECURITY_SELINUX
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.
95 If you are unsure how to answer this question, answer 1.
97 config SECURITY_SELINUX_POLICYDB_VERSION_MAX
98 bool "NSA SELinux maximum supported policy format version"
99 depends on SECURITY_SELINUX
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.
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.
113 If you are unsure how to answer this question, answer N.
115 config SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE
116 int "NSA SELinux maximum supported policy format version value"
117 depends on SECURITY_SELINUX_POLICYDB_VERSION_MAX
121 This option sets the value for the maximum policy format version
122 supported by SELinux.
125 For Fedora Core 3, use 18.
126 For Fedora Core 4, use 19.
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.