Re: /usr/src/libexec/talkd notification broken on pty's when user is using misc/screen ports in -CURRENT

Cy.Schubert_at_komquats.com

To: Vincent Poy <vince@oahu.WURLDLINK.NET>
Date: Tue, 01 Jul 2003 12:10:23 -0700


--
Cy Schubert <Cy.Schubert@komquats.com>        http://www.komquats.com/
BC Government                     .                       FreeBSD UNIX
Cy.Schubert@osg.gov.bc.ca         .                     cy@FreeBSD.org
http://www.gov.bc.ca/             .            http://www.FreeBSD.org/
In message <20030701082011.Y3146-100000@oahu.WURLDLINK.NET>, Vincent 
Poy writes
:
> On Tue, 1 Jul 2003, Cy Schubert wrote:
> 
> > In message <20030701052615.G3146-100000@oahu.WURLDLINK.NET>, Vincent
> > Poy writes
> > :
> > [a bunch of lines edited out for brevity, see archives]
> > > Hi Cy:
> > >
> > > 	I found the problem.  In 5.1-CURRENT and I think 5.1-RELEASE, /dev
> > > uses the devfs for the devices so it no longer has to be manually
> > > generated.  I login to the system using /dev/ttyp0 which shows up as:
> > >
> > > crw--w----  1 vince  tty    -   5,   0 Jul  1 08:28 /dev/ttyp0
> > >
> > > 	However, the 10 tty's that screen uses is ttyp1-pa which has the
> > > group as users or the same as my login:
> > >
> > > crw--w----  1 vince  users    -   5,   1 Jul  1 08:28 /dev/ttyp1
> > > crw-------  1 vince  users  -   5,   2 Jul  1 08:26 /dev/ttyp2
> > > crw--w----  1 vince  users  -   5,   3 Jun 30 16:18 /dev/ttyp3
> > > crw--w----  1 vince  users  -   5,   4 Jun 29 00:35 /dev/ttyp4
> > > crw--w----  1 vince  users  -   5,   5 Jun 29 00:35 /dev/ttyp5
> > > crw--w----  1 vince  users  -   5,   6 Jun 29 00:35 /dev/ttyp6
> > > crw--w----  1 vince  users  -   5,   7 Jun 29 00:35 /dev/ttyp7
> > > crw--w----  1 vince  users  -   5,   8 Jun 29 00:35 /dev/ttyp8
> > > crw--w----  1 vince  users  -   5,   9 Jul  1 08:18 /dev/ttyp9
> > > crw--w----  1 vince  users  -   5,  10 Jul  1 08:28 /dev/ttypa
> > >
> > > 	As soon as I changed the ttyp1 to the group tty, everything started
> > > working correctly.  So it seems that the /dev has the incorrect group whe
> n
> > > the tty is from screen.
> >
> > No problems here.
> >
> > cwsys$ ll ttyp?
> > crw-rw-rw-  1 root  wheel    5,   0 Jun 26 13:19 ttyp0
> > crw--w----  1 cy    tty      5,   1 Jul  1 10:05 ttyp1
> > crw--w----  1 cy    tty      5,   2 Jul  1 10:05 ttyp2
> > crw--w----  1 cy    tty      5,   3 Jul  1 10:05 ttyp3
> > crw--w----  1 cy    tty      5,   4 Jul  1 10:05 ttyp4
> > crw--w----  1 cy    tty      5,   5 Jul  1 10:05 ttyp5
> > crw--w----  1 cy    tty      5,   6 Jul  1 10:05 ttyp6
> > crw--w----  1 cy    tty      5,   7 Jul  1 10:05 ttyp7
> > crw--w----  1 cy    tty      5,   8 Jul  1 10:05 ttyp8
> > crw--w----  1 cy    tty      5,   9 Jul  1 10:05 ttyp9
> > crw--w----  1 cy    tty      5,  10 Jul  1 10:05 ttypa
> > crw--w----  1 cy    tty      5,  11 Jul  1 10:05 ttypb
> > crw--w----  1 cy    tty      5,  12 Jul  1 10:05 ttypc
> > crw--w----  1 cy    tty      5,  13 Jul  1 10:05 ttypd
> > crw--w----  1 cy    tty      5,  14 Jul  1 10:05 ttype
> > crw--w----  1 cy    tty      5,  15 Jul  1 10:05 ttypf
> > cwsys$
> >
> > I have a locally built package here at http://komquats.com/pkg/screen-3.
> > 9.15_1.tbz/. It's built from the stock 3.9.15_1. See if it makes a
> > difference. Other than that it could be a myriad of configuration
> > things on your system. Anyhow give it a try and let us know your
> > results.
> 
> 	I tried your package with the extracted bin/screen binary and
> yours work correctly.
> 
> vince@bigbang [11:20am][~] >> tty
> /dev/ttypb
> vince@bigbang [11:20am][~] >> dir /dev/ttypb
> crw--w----  1 vince  tty  -   5,  11 Jul  1 11:20 /dev/ttypb
> vince@bigbang [11:20am][~] >>
> 
> Message from Talk_Daemon@bigbang.DNALOGIC.NET at 11:20 on 2003/07/01 ...
> talk: connection requested by vince@oahu.wurldlink.net
> talk: respond with:  talk vince@oahu.wurldlink.net
> 
> vince@bigbang [11:20am][~] >>
> 
> 	So this means that the configure script might have something
> configured incorrectly.   I just tried to rebuild the port and it's the
> configure script which generates the config.h with the wrong PTYGROUP.
> 
> /*
>  * define PTYMODE if you do not like the default of 0622, which allows
>  * public write to your pty.
>  * define PTYGROUP to some numerical group-id if you do not want the
>  * tty to be in "your" group.
>  * Note, screen is unable to change mode or group of the pty if it
>  * is not installed with sufficient privilege. (e.g. set-uid-root)
>  * define PTYROFS if the /dev/pty devices are mounted on a read-only
>  * filesystem so screen should not even attempt to set mode or group
>  * even if running as root (e.g. on TiVo).
>  */
> #define PTYMODE 0620
> #define PTYGROUP 32
> /* #undef PTYROFS */
> 
> 	Somehow the autodetection is definining a PTYGROUP instead of
> leaving it at the default of tty.
> 
> 
> Cheers,
> Vince - vince@WURLDLINK.NET - Vice President             ________   __ ____
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> 
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