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gerrit-public.fairphone.software / kernel / msm-4.19 / 75e98b34155264d943aa53edce465e87f3ccbadf / . / security / selinux / Kconfig
blob: a436d1cfa88b8ef68fec2de2addf3af4cc2e54e3 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1config SECURITY_SELINUX
2 bool "NSA SELinux Support"
Stephen Smalley99f6d612006-02-07 12:58:51 -0800[diff] [blame]3 depends on SECURITY_NETWORK && AUDIT && NET && INET
James Morris4e5ab4c2006-06-09 00:33:33 -0700[diff] [blame]4 select NETWORK_SECMARK
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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 You can obtain the policy compiler (checkpolicy), the utility for
10 labeling filesystems (setfiles), and an example policy configuration
11 from <http://www.nsa.gov/selinux/>.
12 If you are unsure how to answer this question, answer N.
13
14config SECURITY_SELINUX_BOOTPARAM
15 bool "NSA SELinux boot parameter"
16 depends on SECURITY_SELINUX
17 default n
18 help
19 This option adds a kernel parameter 'selinux', which allows SELinux
20 to be disabled at boot. If this option is selected, SELinux
21 functionality can be disabled with selinux=0 on the kernel
22 command line. The purpose of this option is to allow a single
23 kernel image to be distributed with SELinux built in, but not
24 necessarily enabled.
25
26 If you are unsure how to answer this question, answer N.
27
28config SECURITY_SELINUX_BOOTPARAM_VALUE
29 int "NSA SELinux boot parameter default value"
30 depends on SECURITY_SELINUX_BOOTPARAM
31 range 0 1
32 default 1
33 help
34 This option sets the default value for the kernel parameter
35 'selinux', which allows SELinux to be disabled at boot. If this
36 option is set to 0 (zero), the SELinux kernel parameter will
37 default to 0, disabling SELinux at bootup. If this option is
38 set to 1 (one), the SELinux kernel parameter will default to 1,
39 enabling SELinux at bootup.
40
41 If you are unsure how to answer this question, answer 1.
42
43config SECURITY_SELINUX_DISABLE
44 bool "NSA SELinux runtime disable"
45 depends on SECURITY_SELINUX
46 default n
47 help
48 This option enables writing to a selinuxfs node 'disable', which
49 allows SELinux to be disabled at runtime prior to the policy load.
50 SELinux will then remain disabled until the next boot.
51 This option is similar to the selinux=0 boot parameter, but is to
52 support runtime disabling of SELinux, e.g. from /sbin/init, for
53 portability across platforms where boot parameters are difficult
54 to employ.
55
56 If you are unsure how to answer this question, answer N.
57
58config SECURITY_SELINUX_DEVELOP
59 bool "NSA SELinux Development Support"
60 depends on SECURITY_SELINUX
61 default y
62 help
63 This enables the development support option of NSA SELinux,
64 which is useful for experimenting with SELinux and developing
65 policies. If unsure, say Y. With this option enabled, the
66 kernel will start in permissive mode (log everything, deny nothing)
67 unless you specify enforcing=1 on the kernel command line. You
68 can interactively toggle the kernel between enforcing mode and
69 permissive mode (if permitted by the policy) via /selinux/enforce.
70
71config SECURITY_SELINUX_AVC_STATS
72 bool "NSA SELinux AVC Statistics"
73 depends on SECURITY_SELINUX
74 default y
75 help
76 This option collects access vector cache statistics to
77 /selinux/avc/cache_stats, which may be monitored via
78 tools such as avcstat.
79
80config SECURITY_SELINUX_CHECKREQPROT_VALUE
81 int "NSA SELinux checkreqprot default value"
82 depends on SECURITY_SELINUX
83 range 0 1
84 default 1
85 help
86 This option sets the default value for the 'checkreqprot' flag
87 that determines whether SELinux checks the protection requested
88 by the application or the protection that will be applied by the
89 kernel (including any implied execute for read-implies-exec) for
90 mmap and mprotect calls. If this option is set to 0 (zero),
91 SELinux will default to checking the protection that will be applied
92 by the kernel. If this option is set to 1 (one), SELinux will
93 default to checking the protection requested by the application.
94 The checkreqprot flag may be changed from the default via the
95 'checkreqprot=' boot parameter. It may also be changed at runtime
96 via /selinux/checkreqprot if authorized by policy.
97
98 If you are unsure how to answer this question, answer 1.
James Morris4e5ab4c2006-06-09 00:33:33 -0700[diff] [blame]99
100config SECURITY_SELINUX_ENABLE_SECMARK_DEFAULT
101 bool "NSA SELinux enable new secmark network controls by default"
102 depends on SECURITY_SELINUX
103 default n
104 help
105 This option determines whether the new secmark-based network
106 controls will be enabled by default. If not, the old internal
107 per-packet controls will be enabled by default, preserving
108 old behavior.
109
110 If you enable the new controls, you will need updated
111 SELinux userspace libraries, tools and policy. Typically,
112 your distribution will provide these and enable the new controls
113 in the kernel they also distribute.
114
Matt LaPlante44c09202006-10-03 22:34:14 +0200[diff] [blame]115 Note that this option can be overridden at boot with the
James Morris4e5ab4c2006-06-09 00:33:33 -0700[diff] [blame]116 selinux_compat_net parameter, and after boot via
117 /selinux/compat_net. See Documentation/kernel-parameters.txt
118 for details on this parameter.
119
120 If you enable the new network controls, you will likely
121 also require the SECMARK and CONNSECMARK targets, as
122 well as any conntrack helpers for protocols which you
123 wish to control.
124
Matt LaPlantecab00892006-10-03 22:36:44 +0200[diff] [blame]125 If you are unsure what to do here, select N.
James Morris4e5ab4c2006-06-09 00:33:33 -0700[diff] [blame]126
Stephen Smalley016b9bd2006-09-25 23:31:58 -0700[diff] [blame]127config SECURITY_SELINUX_POLICYDB_VERSION_MAX
128 bool "NSA SELinux maximum supported policy format version"
129 depends on SECURITY_SELINUX
130 default n
131 help
132 This option enables the maximum policy format version supported
133 by SELinux to be set to a particular value. This value is reported
134 to userspace via /selinux/policyvers and used at policy load time.
135 It can be adjusted downward to support legacy userland (init) that
136 does not correctly handle kernels that support newer policy versions.
137
138 Examples:
139 For the Fedora Core 3 or 4 Linux distributions, enable this option
David Sterba3dde6ad2007-05-09 07:12:20 +0200[diff] [blame]140 and set the value via the next option. For Fedora Core 5 and later,
Stephen Smalley016b9bd2006-09-25 23:31:58 -0700[diff] [blame]141 do not enable this option.
142
143 If you are unsure how to answer this question, answer N.
144
145config SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE
146 int "NSA SELinux maximum supported policy format version value"
147 depends on SECURITY_SELINUX_POLICYDB_VERSION_MAX
Eric Paris64dbf072008-03-31 12:17:33 +1100[diff] [blame]148 range 15 23
Stephen Smalley016b9bd2006-09-25 23:31:58 -0700[diff] [blame]149 default 19
150 help
151 This option sets the value for the maximum policy format version
152 supported by SELinux.
153
154 Examples:
155 For Fedora Core 3, use 18.
156 For Fedora Core 4, use 19.
157
158 If you are unsure how to answer this question, look for the
159 policy format version supported by your policy toolchain, by
160 running 'checkpolicy -V'. Or look at what policy you have
161 installed under /etc/selinux/$SELINUXTYPE/policy, where
162 SELINUXTYPE is defined in your /etc/selinux/config.
163