mesg Broke on Stable between 8/21 and 8/28

[horio shoichi]

On Sun, 29 Aug 2004 18:56:48 -0700
Dave Tweten <tweten at nas.nasa.gov> wrote:
> When I replaced a STABLE build from 8/21 with one from 8/29, "mesg" 
> stopped working on xterms.
> 
> I treat each xterm as a login shell, and include "mesg n" in .login.  
> The problem seems to be that ownership of /dev/ttyp? is not being 
> transferred to the user anymore.  I remember that "options UCONSOLE" 
> was involved in the transfer of ownership.  That configuration element 
> was in both the 8/21 and 8/28 kernels; nothing was changed in the 
> config file.
> 
> I checked the mailing list archives, and there does seem to be some 
> recent action in the tty driver area.  Unfortunatly, we were 
> compromised recently, and I'm only now getting my connections to e-mail 
> lists (including this one) re-established, so my knowledge of recent 
> list traffic is limited to what I can find on the web site.
> 
> Does anyone have any idea what has caused the change?
> -- 
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> 
> 
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Similar here. On 4.9-STABLE (I'm awaiting ipfilter straightened out).

The symptoms are:

o 'mesg n' in .cshrc doesn't cause problem when remotely logged in,

o starting up with xterm or running script are 'permission denied',

o vi command 'set nomesg' is 'Operation not permitted'.


The stem of those problems of mine is recent dropping of setuid bit
from /usr/X11R6/bin/xterm.

I tried setting setuid bit on /usr/bin/mesg. It solved the first problem
but not the second. So, due to the fear of further unforeseen troubles
(although 'set nomesg' itself doesn't look make much sense),
I have set setuid back on xterm. Now, it is (they are):

% ls -aFl /usr/X11R6/bin/xterm*
lrwxrwxrwx  1 root  wheel      27 Aug 30 11:26 /usr/X11R6/bin/xterm@ -> /usr/X11R6/bin/xterm-static
-rwsr-xr-x  1 root  wheel  260792 Aug 29 06:23 /usr/X11R6/bin/xterm-static*
%


horio shoichi