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

From: horio shoichi (bugsgrief_at_bugsgrief.net)
Date: 08/31/04

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    Date: Tue, 31 Aug 2004 20:32:49 +0900
To: freebsd-stable@freebsd.org

    On Mon, 30 Aug 2004 22:52:40 +0900
    horio shoichi <bugsgrief@bugsgrief.net> wrote:
    > On Sun, 29 Aug 2004 18:56:48 -0700
    > Dave Tweten <tweten@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?
    > > --
    > > M/S 258-5 |1024-bit PGP fingerprint:|tweten@nas.nasa.gov
    > > NASA Ames Research Center| 41 B0 89 0A 8F 94 6C 59| (650) 604-4416
    > > Moffett Field, CA 94035 | 7C 80 10 20 25 C7 2F E6|FAX: (650) 604-4377
    > > Not an official NASA position; you can't even be certain who sent this!
    > >
    > >
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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
    >
    > _______________________________________________
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    > http://lists.freebsd.org/mailman/listinfo/freebsd-stable
    > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"
    >

    Sorry, but I was very wrong. I fully restarted X and found setuid on xterm
    doesn't do any good on script. It keeps pty modes crw-rw-rw- with owner
    root:wheel, and still prints 'permission denied'. Script might have been
    working this way, but I have lost my memory.

    horio shoichi

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