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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748config SECURITY_LOCKDOWN_LSM bool "Basic module for enforcing kernel lockdown" depends on SECURITY select MODULE_SIG if MODULES help Build support for an LSM that enforces a coarse kernel lockdown behaviour.
config SECURITY_LOCKDOWN_LSM_EARLY bool "Enable lockdown LSM early in init" depends on SECURITY_LOCKDOWN_LSM help Enable the lockdown LSM early in boot. This is necessary in order to ensure that lockdown enforcement can be carried out on kernel boot parameters that are otherwise parsed before the security subsystem is fully initialised. If enabled, lockdown will unconditionally be called before any other LSMs.
choice prompt "Kernel default lockdown mode" default LOCK_DOWN_KERNEL_FORCE_NONE depends on SECURITY_LOCKDOWN_LSM help The kernel can be configured to default to differing levels of lockdown.
config LOCK_DOWN_KERNEL_FORCE_NONE bool "None" help No lockdown functionality is enabled by default. Lockdown may be enabled via the kernel commandline or /sys/kernel/security/lockdown.
config LOCK_DOWN_KERNEL_FORCE_INTEGRITY bool "Integrity" help The kernel runs in integrity mode by default. Features that allow the kernel to be modified at runtime are disabled.
config LOCK_DOWN_KERNEL_FORCE_CONFIDENTIALITY bool "Confidentiality" help The kernel runs in confidentiality mode by default. Features that allow the kernel to be modified at runtime or that permit userland code to read confidential material held inside the kernel are disabled.
endchoice