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

[Kyle O'Donnell]

wow that is an annoying change!

is there a list somewhere with ALL of these annoying changes in one place?
so far the uname -r and now the chmod



On Thu, Mar 24, 2011 at 1:32 PM, Paul Krizak <paul.krizak at amd.com> wrote:

> But this is a behavior change from RHEL5:
>
> [root at svvadm01 tmp]# cat /etc/redhat-release
> Red Hat Enterprise Linux Client release 5.4 (Tikanga)
>
> [root at svvadm01 tmp]# mkdir foo
> [root at svvadm01 tmp]# ls -lad foo
> drwxr-xr-x 2 root root 4096 Mar 24 10:31 foo
>
> [root at svvadm01 tmp]# chmod 2755 foo
> [root at svvadm01 tmp]# ls -lad foo
> drwxr-sr-x 2 root root 4096 Mar 24 10:31 foo
>
> [root at svvadm01 tmp]# chmod 0755 foo
> [root at svvadm01 tmp]# ls -lad foo
> drwxr-xr-x 2 root root 4096 Mar 24 10:31 foo
>
> And I don't know of a good reason for the behavior change.
>
>
> Paul Krizak                         7171 Southwest Pkwy MS B200.3A
> MTS Systems Engineer                Austin, TX  78735
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>
> On 03/24/2011 10:27 AM, Kinzel, David wrote:
>
>> Man pages says as much:
>>
>>
>>        chmod preserves a directory's set-user-ID and set-group-ID bits
>> unless you explicitly specify  other-
>>        wise.   You  can set or clear the bits with symbolic modes like
>> u+s and g-s, and you can set (but not
>>        clear) the bits with a numeric mode.
>>
>>
>>        From: rhelv6-list-bounces at redhat.com
>> [mailto:rhelv6-list-bounces at redhat.com] On Behalf Of Kyle O'Donnell
>>        Sent: Thursday, March 24, 2011 11:11 AM
>>        To: rhelv6-list at redhat.com
>>        Subject: [rhelv6-list] found a chmod bug in rhel 6.0
>>
>>
>>        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
>>
>>
>>
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