[LTP] [PATCH v2 1/3] lib: add function to check for kernel lockdown

[Erico Nunes]

On 7/29/20 5:14 AM, Li Wang wrote:
> Thanks Erico for patch V2.
> 
> On Wed, Jul 29, 2020 at 12:23 AM Erico Nunes <ernunes@redhat.com
> <mailto:ernunes@redhat.com>> wrote:
> 
>     Some syscalls are not available if the kernel is booted using the
>     'lockdown' feature. That can cause some tests to report fail, showing
>     a message like:
> 
>       Lockdown: iopl01: iopl is restricted; see man kernel_lockdown.7
> 
>     This patch adds a function that can be used by tests to check for this
>     case, so it can be handled accordingly.
> 
>     Signed-off-by: Erico Nunes <ernunes@redhat.com
>     <mailto:ernunes@redhat.com>>
>     ---
>     ...
>     +int tst_lockdown_enabled(void)
>     +{
>     +       char line[BUFSIZ];
>     +       const char *lockdown_path = "/sys/kernel/security/lockdown";
> 
> 
> I prefer to add a macro definition in the header file instead of this ^.
>     #define PATH_LOCKDOWN  "/sys/kernel/security/lockdown"

I'm ok with that, do you want me to submit another version like this or
can you change while applying?

Thank you

Erico