Re: Identify whether the kernel version supports Path based exclusion

Hello,

On Tuesday, January 10, 2023 7:08:12 AM EST Anurag Aggarwal wrote:
> I need a method to identify whether the audid version a kernel is running
> supports path based exclusions.

It's not dependant on auditd. The kernel itself decides if a rule is valid.
 
> One option would be to use audit_add_rule_data to add a temporary path
> based rule and check if it is successful, but this won't work when auditd
> is running in immutable mode.
> 
> Any other way which does not require checking versions of Kernel or
> Distribution?

If you are looking to see if this is supported

-a always,exclude  -F exec=/usr/bin/ls

then it can be detected by:

uint32_t features = audit_get_features();
if ((features & AUDIT_FEATURE_BITMAP_EXCLUDE_EXTEND) == 0)
    puts("not supported");
else
    puts("supported");

-Steve


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