Path: utzoo!attcan!uunet!cs.utexas.edu!ut-emx!mic
From: mic@ut-emx.uucp (Mic Kaczmarczik)
Newsgroups: comp.windows.x
Subject: Re: OpenWindows shelltool/cmdtool under X-terminal
Keywords: OpenWindows, shelltool/cmdtool, X-terminal
Message-ID: <38553@ut-emx.uucp>
Date: 22 Oct 90 18:36:08 GMT
References: <2522@ux.acs.umn.edu>
Organization: UT Austin Computation Center, Unix/VMS Services
Lines: 102

In article <2522@ux.acs.umn.edu> aaron@ux.acs.umn.edu (Aaron Y.T. Cheung) writes:
>We have:
>
>1. Suns running Sun OS 4.1 and OpenWindows 2.0
>2. NCD X-terminals under the control of xdm
>
>   Now we want to run the OpenWindows environment (except the NeWS stuffs)
>on the X-terminals, and with xdm as the login front end.  Most of the
>stuffs work except shelltool/cmdtool.

I found an answer to this problem last week.  The problem is that
SunOS 4.1 uses POSIX job control, which changes the way programs need
to dissociate themselves from the controlling terminal.  Shelltool and
cmdtool don't do this quite the way they need to under 4.1; I guess
the OpenWindows developers never tried invoking these programs on an X
terminal. 

According to the SunOS 4.1 release notes, the program /usr/etc/setsid
can be used as a ``wrapper'' for programs that have this problem; if
you change your shelltool/cmdtool invocation to
	/usr/etc/setsid -b ${OPENWINHOM}/bin/xview/shelltool [args]

the problem should go away. On our systems, I even went so far as to
make a shell script wrapper for these programs, so I wouldn't have to
change any menu files; a shell archive of what I did is enclosed. 

Enjoy,

--mic--

--------------------------------------------------------------------
#! /bin/sh
# This is a shell archive.  Remove anything before this line, then unpack
# it by saving it into a file and typing "sh file".  To overwrite existing
# files, type "sh file -c".  You can also feed this as standard input via
# unshar, or by typing "sh <file", e.g..  If this archive is complete, you
# will see the following message at the end:
#		"End of shell archive."
# Contents:  README cmdtool.sh
# Wrapped by mic@emx.utexas.edu on Mon Oct 22 13:33:00 1990
PATH=/bin:/usr/bin:/usr/ucb ; export PATH
if test -f 'README' -a "${1}" != "-c" ; then 
  echo shar: Will not clobber existing file \"'README'\"
else
echo shar: Extracting \"'README'\" \(993 characters\)
sed "s/^X//" >'README' <<'END_OF_FILE'
XDescription:
X
XIf you want to run cmdtool or shelltool via rsh(1) or from xdm(X11),
Xyou need to establish a controlling terminal for the program to dissociate
Xthe tty subwindow from.  Otherwise, the program reports TIOCSPGRP errors,
Xand the doesn't see any keyboard input.
X
XThe shell script in this directory uses setsid(2V) to establish a terminal
Xsession ID for cmdtool/shelltool, which seems to do the trick.  At least
Xnow I can invoke shelltool from my window manager when logging in via
Xxdm.
X
XInstallation:
X
XInstalling this hack requires that you move the cmdtool binary somewhere
Xother than $OPENWINHOME/bin/xview.  I put it in the subdirectory .bin for
Xconvenience.
X
X	cp cmdtool.sh $OPENWINHOME/bin/xview	# copy the wrapper
X	mkdir $OPENWINHOME/bin/xview/.bin	# create area for real binary
X	cd $OPENWINHOME/bin/xview/.bin		# go there
X	mv ../cmdtool .				# save real cmdtool
X	mv ../cmdtool.sh cmdtool		# replace it with cmdtool.sh
X	ln -s cmdtool shelltool			# remake symlink for shelltool
END_OF_FILE
if test 993 -ne `wc -c <'README'`; then
    echo shar: \"'README'\" unpacked with wrong size!
fi
# end of 'README'
fi
if test -f 'cmdtool.sh' -a "${1}" != "-c" ; then 
  echo shar: Will not clobber existing file \"'cmdtool.sh'\"
else
echo shar: Extracting \"'cmdtool.sh'\" \(339 characters\)
sed "s/^X//" >'cmdtool.sh' <<'END_OF_FILE'
X#!/bin/sh
X#
X# @(#)cmdtool.sh	1.2 10/16/90 (cc.utexas.edu) /tmp_mnt/usr/share/src/public/sun/fixes/remote-cmdtool/SCCS/s.cmdtool.sh
X#
X# Wrapper for cmdtool and shelltool that establishes a session leader for
X# the process.  See setsid(8V) for details.
X#
Xexec /usr/etc/setsid -b ${OPENWINHOME-/usr/openwin}/bin/xview/.bin/`basename $0` "$@"
END_OF_FILE
if test 339 -ne `wc -c <'cmdtool.sh'`; then
    echo shar: \"'cmdtool.sh'\" unpacked with wrong size!
fi
# end of 'cmdtool.sh'
fi
echo shar: End of shell archive.
exit 0
-- 
Mic Kaczmarczik                  gripe@{emx,ix1,ccwf} (Unix consulting, 1-0251)
Unix / VMS / Cyber Services                 ...!cs.utexas.edu!ut-emx!mic (UUCP)
UT Austin Computation Center                      mic@emx.utexas.edu (Internet)
                                                            mic@utaivc (BITNET)