[PATCH] ima: don't clear IMA_DIGSIG flag when setting non-IMA xattr

[Mimi Zohar]

Hi Coiby,

On Mon, 2025-09-08 at 19:12 +0800, Coiby Xu wrote:
> > 
> > Even without an IMA appraise policy, the security xattrs are written out to the
> > filesystem, but the IMA_DIGSIG flag is not cached.
> 
> It seems I miss some context for the above sentence. If no IMA policy is
> configured, no ima_iint_cache will be created. If you mean non-appraisal
> policy, will not caching IMA_DIGSIG flag cause any problem?

Sorry.  What I was trying to say is that your test program illustrates the
problem both with or without any of the boot command line options as you
suggested - "ima_appraise=fix evm=fix ima_policy=appraise_tcb".  Writing some
other security xattr is a generic problem, whether the file is in policy or not,
whether IMA or EVM are in fix mode or not.  The rpm-plugin-ima should install
the IMA signature regardless.

SELinux doesn't usually re-write the security.selinux xattr, so the problem is
hard to reproduce after installing the rpm-plugin-ima with "dnf reinstall
<package>".

thanks,

Mimi