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164 lines
6.3 KiB
Plaintext
164 lines
6.3 KiB
Plaintext
config SECURITY_SELINUX
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bool "NSA SELinux Support"
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depends on SECURITY_NETWORK && AUDIT && NET && INET
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select NETWORK_SECMARK
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default n
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help
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This selects NSA Security-Enhanced Linux (SELinux).
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You will also need a policy configuration and a labeled filesystem.
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You can obtain the policy compiler (checkpolicy), the utility for
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labeling filesystems (setfiles), and an example policy configuration
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from <http://www.nsa.gov/selinux/>.
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If you are unsure how to answer this question, answer N.
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config SECURITY_SELINUX_BOOTPARAM
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bool "NSA SELinux boot parameter"
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depends on SECURITY_SELINUX
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default n
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help
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This option adds a kernel parameter 'selinux', which allows SELinux
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to be disabled at boot. If this option is selected, SELinux
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functionality can be disabled with selinux=0 on the kernel
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command line. The purpose of this option is to allow a single
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kernel image to be distributed with SELinux built in, but not
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necessarily enabled.
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If you are unsure how to answer this question, answer N.
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config SECURITY_SELINUX_BOOTPARAM_VALUE
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int "NSA SELinux boot parameter default value"
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depends on SECURITY_SELINUX_BOOTPARAM
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range 0 1
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default 1
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help
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This option sets the default value for the kernel parameter
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'selinux', which allows SELinux to be disabled at boot. If this
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option is set to 0 (zero), the SELinux kernel parameter will
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default to 0, disabling SELinux at bootup. If this option is
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set to 1 (one), the SELinux kernel parameter will default to 1,
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enabling SELinux at bootup.
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If you are unsure how to answer this question, answer 1.
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config SECURITY_SELINUX_DISABLE
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bool "NSA SELinux runtime disable"
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depends on SECURITY_SELINUX
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default n
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help
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This option enables writing to a selinuxfs node 'disable', which
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allows SELinux to be disabled at runtime prior to the policy load.
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SELinux will then remain disabled until the next boot.
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This option is similar to the selinux=0 boot parameter, but is to
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support runtime disabling of SELinux, e.g. from /sbin/init, for
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portability across platforms where boot parameters are difficult
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to employ.
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If you are unsure how to answer this question, answer N.
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config SECURITY_SELINUX_DEVELOP
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bool "NSA SELinux Development Support"
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depends on SECURITY_SELINUX
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default y
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help
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This enables the development support option of NSA SELinux,
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which is useful for experimenting with SELinux and developing
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policies. If unsure, say Y. With this option enabled, the
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kernel will start in permissive mode (log everything, deny nothing)
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unless you specify enforcing=1 on the kernel command line. You
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can interactively toggle the kernel between enforcing mode and
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permissive mode (if permitted by the policy) via /selinux/enforce.
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config SECURITY_SELINUX_AVC_STATS
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bool "NSA SELinux AVC Statistics"
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depends on SECURITY_SELINUX
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default y
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help
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This option collects access vector cache statistics to
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/selinux/avc/cache_stats, which may be monitored via
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tools such as avcstat.
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config SECURITY_SELINUX_CHECKREQPROT_VALUE
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int "NSA SELinux checkreqprot default value"
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depends on SECURITY_SELINUX
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range 0 1
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default 1
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help
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This option sets the default value for the 'checkreqprot' flag
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that determines whether SELinux checks the protection requested
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by the application or the protection that will be applied by the
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kernel (including any implied execute for read-implies-exec) for
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mmap and mprotect calls. If this option is set to 0 (zero),
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SELinux will default to checking the protection that will be applied
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by the kernel. If this option is set to 1 (one), SELinux will
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default to checking the protection requested by the application.
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The checkreqprot flag may be changed from the default via the
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'checkreqprot=' boot parameter. It may also be changed at runtime
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via /selinux/checkreqprot if authorized by policy.
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If you are unsure how to answer this question, answer 1.
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config SECURITY_SELINUX_ENABLE_SECMARK_DEFAULT
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bool "NSA SELinux enable new secmark network controls by default"
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depends on SECURITY_SELINUX
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default n
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help
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This option determines whether the new secmark-based network
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controls will be enabled by default. If not, the old internal
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per-packet controls will be enabled by default, preserving
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old behavior.
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If you enable the new controls, you will need updated
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SELinux userspace libraries, tools and policy. Typically,
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your distribution will provide these and enable the new controls
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in the kernel they also distribute.
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Note that this option can be overridden at boot with the
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selinux_compat_net parameter, and after boot via
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/selinux/compat_net. See Documentation/kernel-parameters.txt
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for details on this parameter.
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If you enable the new network controls, you will likely
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also require the SECMARK and CONNSECMARK targets, as
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well as any conntrack helpers for protocols which you
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wish to control.
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If you are unsure what to do here, select N.
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config SECURITY_SELINUX_POLICYDB_VERSION_MAX
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bool "NSA SELinux maximum supported policy format version"
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depends on SECURITY_SELINUX
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default n
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help
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This option enables the maximum policy format version supported
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by SELinux to be set to a particular value. This value is reported
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to userspace via /selinux/policyvers and used at policy load time.
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It can be adjusted downward to support legacy userland (init) that
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does not correctly handle kernels that support newer policy versions.
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Examples:
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For the Fedora Core 3 or 4 Linux distributions, enable this option
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and set the value via the next option. For Fedore Core 5 and later,
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do not enable this option.
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If you are unsure how to answer this question, answer N.
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config SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE
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int "NSA SELinux maximum supported policy format version value"
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depends on SECURITY_SELINUX_POLICYDB_VERSION_MAX
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range 15 21
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default 19
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help
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This option sets the value for the maximum policy format version
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supported by SELinux.
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Examples:
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For Fedora Core 3, use 18.
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For Fedora Core 4, use 19.
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If you are unsure how to answer this question, look for the
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policy format version supported by your policy toolchain, by
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running 'checkpolicy -V'. Or look at what policy you have
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installed under /etc/selinux/$SELINUXTYPE/policy, where
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SELINUXTYPE is defined in your /etc/selinux/config.
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