Re: [PATCH security-next v4 23/32] selinux: Remove boot parameter

[Kees Cook]

On Tue, Oct 2, 2018 at 4:46 PM, John Johansen
<john.johansen@xxxxxxxxxxxxx> wrote:
> On 10/02/2018 04:06 PM, Kees Cook wrote:
>> I think the current proposal (in the other thread) is likely the
>> sanest approach:
>>
>> - Drop CONFIG_SECURITY_SELINUX_BOOTPARAM_VALUE
>> - Drop CONFIG_SECURITY_APPARMOR_BOOTPARAM_VALUE
>> - All enabled LSMs are listed at build-time in CONFIG_LSM_ENABLE
>
> Hrrmmm isn't this a Kconfig selectable list, with each built-in LSM
> available to be enabled by default at boot.

That's not how I have it currently. It's a comma-separated a string,
including the reserved name "all". The default would just be
"CONFIG_LSM_ENABLE=all". Casey and I wanted this to have a way to
capture new LSMs by default at build-time.

>> - Boot time enabling for selinux= and apparmor= remain
>> - lsm.enable= is explicit: overrides above and omissions are disabled
> wfm

Okay, this is closer to v3 than v4. Paul or Stephen, how do you feel
about losing the SELinux bootparam CONFIG? (i.e. CONFIG_LSM_ENABLE
would be replacing its functionality.)

-Kees

-- 
Kees Cook
Pixel Security