Date: Tue, 9 Nov 1999 18:33:55 -0500 From: Christopher Michaels <ChrisMic@clientlogic.com> To: 'Mark Ovens' <mark@ukug.uk.freebsd.org> Cc: freebsd-questions@freebsd.org Subject: RE: Group problems Message-ID: <6C37EE640B78D2118D2F00A0C90FCB4401105D5F@site2s1>
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Well, this is just a semi-educated guess. I would say it is some kind of security issue. Both reboot and halt are _not_ suid root. Whereas shutdown _is_ suid root. It is probably acting as a wrapper of sorts around reboot/halt to prevent it being exploited. Just my opinion tho. -Chris > -----Original Message----- > From: Mark Ovens [SMTP:mark@ukug.uk.freebsd.org] > Sent: Tuesday, November 09, 1999 6:11 PM > To: Alfred Perlstein > Cc: fredrik.carlen@telia.com; freebsd-questions@freebsd.org > Subject: Re: Group problems > > On Mon, Nov 08, 1999 at 10:25:58AM -0800, Alfred Perlstein wrote: > > On Mon, 8 Nov 1999 fredrik.carlen@telia.com wrote: > > > > > > > > Hello! > > > > > > I've put myself in the ' wheel ' group by adding my user name to the > first line > > > in /etc/groups: > > > > > > wheel:*:0:root,leonis > > > > > > Now I can su, but not use reboot or halt... > > > Does anybody know what the problem is? > > > The reboot command GID is wheel, and so is halt's... > > > > you must execute the programs as root, however if you > > include yourself in the 'operator' group you'll be > > able to use shutdown as a normal user. > > > > Hmm, didn't know that. Why, though? reboot(8) can't be run as a > normal user and the only difference I can see between the two is > that shutdown(8) broadcasts a "System going down" warning. Is this > just an historical thing or is there a more subtle reason? > > > -Alfred > > > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-questions" in the body of the message > > -- > STATE-OF-THE-ART: Any computer you can't afford. > OBSOLETE: Any computer you own. > ________________________________________________________________ > FreeBSD - The Power To Serve http://www.freebsd.org > My Webpage http://ukug.uk.freebsd.org/~mark/ > mailto:mark@ukug.uk.freebsd.org http://www.radan.com > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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