Subject: Re: crcmp(), once again
To: None <rillig@NetBSD.org>
From: YAMAMOTO Takashi <email@example.com>
Date: 11/18/2005 08:02:53
> >> - It is unclear why it is necessary at all.
> >> http://mail-index.netbsd.org/tech-kern/2005/11/04/0005.html
> > why unclear, while you know where it's used?
> Because I don't know why the whole set of credentials needs to be
> compared. Until now, no one has answered this question.
read the code. :-)
it checks if given credential is the same as existing one.
> >> - It is the only reason for sorting group lists
> >> when they enter the kernel via setgroups(),
> >> which itself is considered unwanted.
> >> http://mail-index.netbsd.org/tech-kern/2005/11/03/0021.html
> > i don't think the result of setgroups is fed into crcmp.
> > the change didn't fix anything and should be backed out, IMO.
> See the ChangeLog for src/sys/kern/kern_prot.c.
what do you mean?
> >> - It has a big FIXME comment.
> >> src/sys/kern/kern_prot.c
> > i don't see why it needs to be fixed.
> > credentials with the different order of groups are different.
> Please explain why the order of groups is important. I don't see it.
what david said isn't enough?