[rhelv6-list] found a chmod bug in rhel 6.0

[Paul Krizak]

I've reproduced this behavior on my RHEL6 test box. I'm going to open an 
issue with our TAM.


Paul Krizak                         7171 Southwest Pkwy MS B200.3A
MTS Systems Engineer                Austin, TX  78735
Advanced Micro Devices              Desk:  (512) 602-8775
Linux/Unix Systems Engineering      Cell:  (512) 791-0686
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On 03/24/2011 10:11 AM, Kyle O'Donnell wrote:
> I think I found a bug with chmod, but I could just be misinformed...
>
> It looks like the numerical permission syntax for setuid/setgid can only
> be unset with the alphabetical syntax on directories.
>
> 755 permission set on at directory
> # ls -lad at
> drwxr-xr-x 2 root root 4096 Mar 24 11:35 at
>
> add setgid
> # chmod 2755 at
> # ls -lad at
> drwxr-sr-x 2 root root 4096 Mar 24 11:35 at
>
> attempt to remove setgid
> # chmod 0755 at
> # ls -lad at
> drwxr-sr-x 2 root root 4096 Mar 24 11:35 at
> didnt work
>
> another attempt to remove setgid
> # chmod 755 at
> # ls -lad at
> drwxr-sr-x 2 root root 4096 Mar 24 11:35 at
> also didn't work
>
> and one more
> # chmod g-s at
> # ls -lad at
> drwxr-xr-x 2 root root 4096 Mar 24 11:35 at
> success
>
> This doesn't appear to affect files only directories.
>
>
> --kyleo