Messages in this thread | | | Date | Wed, 16 Jul 2003 10:42:03 -0400 (EDT) | From | "Richard B. Johnson" <> | Subject | Re: SUID root |
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On Wed, 16 Jul 2003, Daniel Jacobowitz wrote:
> On Wed, Jul 16, 2003 at 10:19:14AM -0400, Richard B. Johnson wrote: > > > > It appears as though SUID root programs don't work on > > linux 2.4.20, 2.4.21, or 2.4.22-pre6, or at least what > > used to work no longer does. > > > > One program tries to execute iopl(3). In the event that > > it fails, it tries to set UID/GID to root after saving > > the previous, then tries again. > > > > The program exists in /usr/bin, properly owned by root. It > > is set SUID, 4755, and otherwise works. Anybody have any > > clues? Do SUID programs have to be re-written to use some > > other mechanism? I need to have a user-mode program get > > access to an otherwise unused printer port. It's a shame > > to write a module just for this. > > You're stracing it. Stracing prevents setuid from occurring; it used > to just prevent the exec. >
Okay. Thanks, you are right. It is actually working I guess.
Cheers, Dick Johnson Penguin : Linux version 2.4.20 on an i686 machine (797.90 BogoMips). Note 96.3% of all statistics are fiction.
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