--- /dev/null
+#
+# Security configuration
+#
+
+menu "Security options"
+
+source security/keys/Kconfig
+
+config SECURITY_DMESG_RESTRICT
+ bool "Restrict unprivileged access to the kernel syslog"
+ default n
+ help
+ This enforces restrictions on unprivileged users reading the kernel
+ syslog via dmesg(8).
+
+ If this option is not selected, no restrictions will be enforced
+ unless the dmesg_restrict sysctl is explicitly set to (1).
+
+ If you are unsure how to answer this question, answer N.
+
+config SECURITY
+ bool "Enable different security models"
+ depends on SYSFS
+ depends on MULTIUSER
+ help
+ This allows you to choose different security modules to be
+ configured into your kernel.
+
+ If this option is not selected, the default Linux security
+ model will be used.
+
+ If you are unsure how to answer this question, answer N.
+
+config SECURITYFS
+ bool "Enable the securityfs filesystem"
+ help
+ This will build the securityfs filesystem. It is currently used by
+ the TPM bios character driver and IMA, an integrity provider. It is
+ not used by SELinux or SMACK.
+
+ If you are unsure how to answer this question, answer N.
+
+config SECURITY_NETWORK
+ bool "Socket and Networking Security Hooks"
+ depends on SECURITY
+ help
+ This enables the socket and networking security hooks.
+ If enabled, a security module can use these hooks to
+ implement socket and networking access controls.
+ If you are unsure how to answer this question, answer N.
+
+config SECURITY_NETWORK_XFRM
+ bool "XFRM (IPSec) Networking Security Hooks"
+ depends on XFRM && SECURITY_NETWORK
+ help
+ This enables the XFRM (IPSec) networking security hooks.
+ If enabled, a security module can use these hooks to
+ implement per-packet access controls based on labels
+ derived from IPSec policy. Non-IPSec communications are
+ designated as unlabelled, and only sockets authorized
+ to communicate unlabelled data can send without using
+ IPSec.
+ If you are unsure how to answer this question, answer N.
+
+config SECURITY_PATH
+ bool "Security hooks for pathname based access control"
+ depends on SECURITY
+ help
+ This enables the security hooks for pathname based access control.
+ If enabled, a security module can use these hooks to
+ implement pathname based access controls.
+ If you are unsure how to answer this question, answer N.
+
+config INTEL_TXT
+ bool "Enable Intel(R) Trusted Execution Technology (Intel(R) TXT)"
+ depends on HAVE_INTEL_TXT
+ help
+ This option enables support for booting the kernel with the
+ Trusted Boot (tboot) module. This will utilize
+ Intel(R) Trusted Execution Technology to perform a measured launch
+ of the kernel. If the system does not support Intel(R) TXT, this
+ will have no effect.
+
+ Intel TXT will provide higher assurance of system configuration and
+ initial state as well as data reset protection. This is used to
+ create a robust initial kernel measurement and verification, which
+ helps to ensure that kernel security mechanisms are functioning
+ correctly. This level of protection requires a root of trust outside
+ of the kernel itself.
+
+ Intel TXT also helps solve real end user concerns about having
+ confidence that their hardware is running the VMM or kernel that
+ it was configured with, especially since they may be responsible for
+ providing such assurances to VMs and services running on it.
+
+ See <http://www.intel.com/technology/security/> for more information
+ about Intel(R) TXT.
+ See <http://tboot.sourceforge.net> for more information about tboot.
+ See Documentation/intel_txt.txt for a description of how to enable
+ Intel TXT support in a kernel boot.
+
+ If you are unsure as to whether this is required, answer N.
+
+config LSM_MMAP_MIN_ADDR
+ int "Low address space for LSM to protect from user allocation"
+ depends on SECURITY && SECURITY_SELINUX
+ default 32768 if ARM || (ARM64 && COMPAT)
+ default 65536
+ help
+ This is the portion of low virtual memory which should be protected
+ from userspace allocation. Keeping a user from writing to low pages
+ can help reduce the impact of kernel NULL pointer bugs.
+
+ For most ia64, ppc64 and x86 users with lots of address space
+ a value of 65536 is reasonable and should cause no problems.
+ On arm and other archs it should not be higher than 32768.
+ Programs which use vm86 functionality or have some need to map
+ this low address space will need the permission specific to the
+ systems running LSM.
+
+source security/selinux/Kconfig
+source security/smack/Kconfig
+source security/tomoyo/Kconfig
+source security/apparmor/Kconfig
+source security/yama/Kconfig
+
+source security/integrity/Kconfig
+
+choice
+ prompt "Default security module"
+ default DEFAULT_SECURITY_SELINUX if SECURITY_SELINUX
+ default DEFAULT_SECURITY_SMACK if SECURITY_SMACK
+ default DEFAULT_SECURITY_TOMOYO if SECURITY_TOMOYO
+ default DEFAULT_SECURITY_APPARMOR if SECURITY_APPARMOR
+ default DEFAULT_SECURITY_YAMA if SECURITY_YAMA
+ default DEFAULT_SECURITY_DAC
+
+ help
+ Select the security module that will be used by default if the
+ kernel parameter security= is not specified.
+
+ config DEFAULT_SECURITY_SELINUX
+ bool "SELinux" if SECURITY_SELINUX=y
+
+ config DEFAULT_SECURITY_SMACK
+ bool "Simplified Mandatory Access Control" if SECURITY_SMACK=y
+
+ config DEFAULT_SECURITY_TOMOYO
+ bool "TOMOYO" if SECURITY_TOMOYO=y
+
+ config DEFAULT_SECURITY_APPARMOR
+ bool "AppArmor" if SECURITY_APPARMOR=y
+
+ config DEFAULT_SECURITY_YAMA
+ bool "Yama" if SECURITY_YAMA=y
+
+ config DEFAULT_SECURITY_DAC
+ bool "Unix Discretionary Access Controls"
+
+endchoice
+
+config DEFAULT_SECURITY
+ string
+ default "selinux" if DEFAULT_SECURITY_SELINUX
+ default "smack" if DEFAULT_SECURITY_SMACK
+ default "tomoyo" if DEFAULT_SECURITY_TOMOYO
+ default "apparmor" if DEFAULT_SECURITY_APPARMOR
+ default "yama" if DEFAULT_SECURITY_YAMA
+ default "" if DEFAULT_SECURITY_DAC
+
+endmenu
+
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