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selinux: Remove SECURITY_SELINUX_BOOTPARAM_VALUE

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In preparation for removing CONFIG_DEFAULT_SECURITY, this removes the
soon-to-be redundant SECURITY_SELINUX_BOOTPARAM_VALUE. Since explicit
ordering via CONFIG_LSM or "lsm=" will define whether an LSM is enabled or
not, this CONFIG will become effectively ignored, so remove it. However,
in order to stay backward-compatible with "security=selinux", the enable
variable defaults to true.

Signed-off-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
Kees Cook 2018-10-01 17:08:57 -07:00
parent 0102fb83f9
commit be6ec88f41
2 changed files with 1 additions and 19 deletions
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15
security/selinux/Kconfig
View File

@ -22,21 +22,6 @@ config SECURITY_SELINUX_BOOTPARAM
If you are unsure how to answer this question, answer N.
config SECURITY_SELINUX_BOOTPARAM_VALUE
int "NSA SELinux boot parameter default value"
depends on SECURITY_SELINUX_BOOTPARAM
range 0 1
default 1
help
This option sets the default value for the kernel parameter
'selinux', which allows SELinux to be disabled at boot. If this
option is set to 0 (zero), the SELinux kernel parameter will
default to 0, disabling SELinux at bootup. If this option is
set to 1 (one), the SELinux kernel parameter will default to 1,
enabling SELinux at bootup.
If you are unsure how to answer this question, answer 1.
config SECURITY_SELINUX_DISABLE
bool "NSA SELinux runtime disable"
depends on SECURITY_SELINUX

5
security/selinux/hooks.c
View File

@ -121,9 +121,8 @@ __setup("enforcing=", enforcing_setup);
#define selinux_enforcing_boot 1
#endif
int selinux_enabled __lsm_ro_after_init = 1;
#ifdef CONFIG_SECURITY_SELINUX_BOOTPARAM
int selinux_enabled = CONFIG_SECURITY_SELINUX_BOOTPARAM_VALUE;
static int __init selinux_enabled_setup(char *str)
{
unsigned long enabled;
@ -132,8 +131,6 @@ static int __init selinux_enabled_setup(char *str)
return 1;
}
__setup("selinux=", selinux_enabled_setup);
#else
int selinux_enabled = 1;
#endif
static unsigned int selinux_checkreqprot_boot =