Hi
When system admin su to root and launch X 11 utilities (for exemple
system-config-printer) or java application (for exemple OpenOffice ./setup)
they get something like that :
# xterm
xterm Xt error: Can't open display: %s
xterm: DISPLAY is not set
or less friendly
# system-config-printer
/usr/lib/python2.6/vendor-packages/gtk-2.0/gtk/__init__.py:57: GtkWarning:
could not open display
warnings.warn(str(e), _gtk.Warning)
/usr/lib/system-config-printer/system-config-printer.py:100: GtkWarning: file
gdkcursor-x11.c: line 262: assertion `GDK_IS_DISPLAY (display)' failed
busy_cursor = gtk.gdk.Cursor(gtk.gdk.WATCH)
Traceback (most recent call last):
File "/usr/lib/system-config-printer/system-config-printer.py", line 100, in
busy_cursor = gtk.gdk.Cursor(gtk.gdk.WATCH)
RuntimeError: could not create GdkCursor object
One way to export DISPLAY to root (or others users) is to declare the following
function inside the user .profile
unset su
function su
{
if (( $# > 2 )) || [[ -z $DISPLAY ]]
then
print "Running /usr/bin/su"
/usr/bin/su $@
else
print "Running su exporting DISPLAY to root"
XDISPLAY="$(uname -n)/unix:${DISPLAY#*:}"
/usr/bin/su - ${2-root} -c "DISPLAY=${DISPLAY} ${SHELL} -c \
\"(/usr/bin/xauth -f $XAUTHORITY nextract - ${XDISPLAY} | \
/usr/bin/xauth nmerge - ; ${SHELL})\""
fi
}
The problem with this method is that you have to add theses line for every host
(this method is not portable and a bit different with Solaris 10 and works only
with bash and ksh).
So improvement to put a code doing the job inside su.c (with or without an -X
option) makes Openindiana more friendly for system admin.
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