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RE: non-root tests in target check-root?
From: |
Voelker, Bernhard |
Subject: |
RE: non-root tests in target check-root? |
Date: |
Mon, 2 Nov 2009 09:18:41 +0100 |
Jim Meyering wrote:
> Voelker, Bernhard wrote:
> > Jim Meyering wrote:
> >> Voelker, Bernhard wrote:
> >> > I'm wondering why there are so many tests (in coreutils-8.0( run by
> >> >
> >> > sudo env PATH="$PATH" NON_ROOT_USERNAME=$USER make -k check-root
> >> >
> >> > which are skipped with "must be run as non-root",
> >> > e.g. touch/read-only, mv/perm-1, etc.
> >> > Is that on purpose (to check wether the root check works;-) ?
> >>
> >> It's because running them as root would fail,
> >> due to the different way in which permissions work when
> >> you are root; e.g., root can touch and write to a read-only file:
> >>
> >> # :>f; chmod 0 f; touch f; echo > f
> >> #
> >
> > thanks for the answer & sorry for the delay.
> >
> > That was clear to me, maybe my question was inprecise:
> > If I understand the check* targets right, there is the general
> > purpose target "check" which can be run as a non-root or a root user
> > while there is a special target for root-only checks named "check-root".
>
> Not quite. I recommend against running "make check" as root.
> There are very many tests, and while we're pretty confident
> they contain few bugs and probably no *exploitable* bugs, it
> is best to be cautious and run as few programs as possible when root.
ok.
> Hence, "make check-root" serves to run the few tests
> that can succeed only when run by root.
... so "touch/read-only" and "mv/perm-1" should be removed from
"make check-root" since it cannot be run as root, right?
Bye,
Berny