Re: [PATCH] IMA: measure.policy: limit dont_measure tmpfs policy to func=FILE_CHECK

[Petr Vorel <pvorel@suse.cz>]

Hi Mimi,

> On Mon, 2025-02-03 at 22:02 +0100, Petr Vorel wrote:
> > add func=FILE_CHECK to dont_measure tmpfs

> > Similarly to tcb.policy limit dont_measure tmpfs policy to func=FILE_CHECK.
> > This allows to do extra measurements, e.g. kexec boot command line, see
> > kernel commit

> > 7eef7c8bac9a ("ima: limit the builtin 'tcb' dont_measure tmpfs policy rule")

> > Also remove leading 0 from tmpfs magic (to match IMA docs and tcb.policy).

> > Suggested-by: Mimi Zohar <zohar@linux.ibm.com>
> > Signed-off-by: Petr Vorel <pvorel@suse.cz>

> Reviewed-by: Mimi Zohar <zohar@linux.ibm.com>

Thanks, also this one merged.

Kind regards,
Petr

> > ---
> >  .../security/integrity/ima/datafiles/ima_policy/measure.policy  | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)

> > diff --git
> > a/testcases/kernel/security/integrity/ima/datafiles/ima_policy/measure.policy
> > b/testcases/kernel/security/integrity/ima/datafiles/ima_policy/measure.policy
> > index 9976ddf2de..8abd05fb1a 100644
> > --- a/testcases/kernel/security/integrity/ima/datafiles/ima_policy/measure.policy
> > +++ b/testcases/kernel/security/integrity/ima/datafiles/ima_policy/measure.policy
> > @@ -8,7 +8,7 @@ dont_measure fsmagic=0x62656572
> >  # DEBUGFS_MAGIC
> >  dont_measure fsmagic=0x64626720
> >  # TMPFS_MAGIC
> > -dont_measure fsmagic=0x01021994
> > +dont_measure fsmagic=0x1021994 func=FILE_CHECK
> >  # SECURITYFS_MAGIC
> >  dont_measure fsmagic=0x73636673
> >  measure func=FILE_MMAP mask=MAY_EXEC