[TAG] Mounting a Samba share

[Jay R. Ashworth]

On Sun, Nov 20, 2005 at 06:56:16PM -0500, Benjamin A. Okopnik wrote:
> > [pete at localhost src]$ ./mount-cifs
> > >>mount: only root can mount //192.168.16.3/Trinsite on
> > >>/home/pete/Desktop/LisaTrinsite
> > >>Mount failed!
> > >>: Success
> > >>[pete at localhost src]$
> 
> Hmmm. I've just tried it myself, and got much the same result - not sure
> why, since SUID binaries seem to work just fine for other stuff.
> 
> Well, let's take a different tack: I've found this on the Web, which
> seems to do just the kind of thing you want (and is an "official"
> program rather than a quick hack, above - but don't let it out of your
> hands, because an SUID 'mount' can be a Bad Thing indeed!):
> 
> http://us2.samba.org/samba/ftp/cifs-cvs/mount.cifs.c
> 
> As to the other thing - Gang, any idea why a system() call in an SUID(0)
> binary fail to execute as root? This program works fine:

I'm fairly sure that's mount(8) enforcing a policy restriction, though
I don't have the code handy either: some programs required that the UID
(not just the EUID) be 0 or they won't do their work.

Cheers,
-- jra
-- 
Jay R. Ashworth                                                jra at baylink.com
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