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_ENABLE_SECMARK_DEFAULT
98 bool "NSA SELinux enable new secmark network controls by default"
99 depends on SECURITY_SELINUX
102 This option determines whether the new secmark-based network
103 controls will be enabled by default. If not, the old internal
104 per-packet controls will be enabled by default, preserving
107 If you enable the new controls, you will need updated
108 SELinux userspace libraries, tools and policy. Typically,
109 your distribution will provide these and enable the new controls
110 in the kernel they also distribute.
112 Note that this option can be overridden at boot with the
113 selinux_compat_net parameter, and after boot via
114 /selinux/compat_net. See Documentation/kernel-parameters.txt
115 for details on this parameter.
117 If you enable the new network controls, you will likely
118 also require the SECMARK and CONNSECMARK targets, as
119 well as any conntrack helpers for protocols which you
122 If you are unsure what to do here, select N.
124 config SECURITY_SELINUX_POLICYDB_VERSION_MAX
125 bool "NSA SELinux maximum supported policy format version"
126 depends on SECURITY_SELINUX
129 This option enables the maximum policy format version supported
130 by SELinux to be set to a particular value. This value is reported
131 to userspace via /selinux/policyvers and used at policy load time.
132 It can be adjusted downward to support legacy userland (init) that
133 does not correctly handle kernels that support newer policy versions.
136 For the Fedora Core 3 or 4 Linux distributions, enable this option
137 and set the value via the next option. For Fedora Core 5 and later,
138 do not enable this option.
140 If you are unsure how to answer this question, answer N.
142 config SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE
143 int "NSA SELinux maximum supported policy format version value"
144 depends on SECURITY_SELINUX_POLICYDB_VERSION_MAX
148 This option sets the value for the maximum policy format version
149 supported by SELinux.
152 For Fedora Core 3, use 18.
153 For Fedora Core 4, use 19.
155 If you are unsure how to answer this question, look for the
156 policy format version supported by your policy toolchain, by
157 running 'checkpolicy -V'. Or look at what policy you have
158 installed under /etc/selinux/$SELINUXTYPE/policy, where
159 SELINUXTYPE is defined in your /etc/selinux/config.