Script para iniciar KDM (en el caso de que no lo haga)

Ayer volví a reinstalar desde cero mi Debian Wheezy con mi repositorio personalizado de KDE 4.10 y debo decir que si antes funcionaba bien, ahora lo hace mucho mejor.

El único problema que tuve fue con KDM, que al parecer no se instaló bien del todo, pues no quería iniciar automáticamente, algo que me llama la atención pues hice la misma instalación, con los mismos repositorios en la otra PC y todo andaba de maravillas.

Buscando la causa del problema detecté que no se creó el fichero /etc/init.d/kdm el cual debe tener adentro esto:

#!/bin/sh -e
### BEGIN INIT INFO
# Provides:          kdm
# Required-Start:    $local_fs $remote_fs
# Required-Stop:     $local_fs $remote_fs
# Should-Start:      console-screen kbd acpid dbus hal krb5-kdc
# Should-Stop:       console-screen kbd
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: X display manager for KDE
# Description:       KDM manages a collection of X servers, which may be on the local host or remote machines.
### END INIT INFO
# /etc/init.d/kdm: start or stop the X display manager
# Script originally stolen from the xdm package
#
# description: K Display Manager
#

# import the LSB init functions
. /lib/lsb/init-functions

# set the locale
if [ -r /etc/default/locale ]; then
. /etc/default/locale
export LANG LANGUAGE
fi

# to start kdm even if it is not the default display manager, change
# HEED_DEFAULT_DISPLAY_MANAGER to "false."
HEED_DEFAULT_DISPLAY_MANAGER=true
DEFAULT_DISPLAY_MANAGER_FILE=/etc/X11/default-display-manager

PATH=/bin:/usr/bin:/sbin:/usr/sbin
DAEMON=/usr/bin/kdm
PIDFILE=/var/run/kdm.pid
UPGRADEFILE=/var/run/kdm.upgrade

setup_config () {
# parameters to support kdm customization
KDMRC=/etc/kde4/kdm/kdmrc
BACKGROUNDRC=/etc/kde4/kdm/backgroundrc

# if configuration is changed by kdmtheme or other tools, don't do magick
if grep -q "^[[:space:]]*Theme=@@@ToBeReplacedByDesktopBase@@@" ${KDMRC}; then

KDMOVERRIDEDIR=/etc/default/kdm.d
KDMCFGDIR=/var/run/kdm
KDMCFG=$KDMCFGDIR/kdmrc
BACKGROUNDCFG=$KDMCFGDIR/backgroundrc
DEFAULT_KDM_THEME=/usr/share/kde4/apps/kdm/themes/ariya

test -x $DAEMON || exit 0

# uncomment, if you want auto-logon to be runlevel-dependant
#test "$runlevel" || { runlevel=`runlevel`; runlevel=${runlevel#* }; }
#test "$runlevel" = 4 && ARG=-autolog || ARG=-noautolog

# uncomment, if you want tons of debug info in your syslog
#ARG="$ARG -debug 255"

# we use an alternative kdm master configuration file
ARG="$ARG -config $KDMCFG"

# we generate kdm configuration files
genkdmconf --in $KDMCFGDIR 1> /dev/null

# we source overrides. run-parts sorts the list in a predictable order
if [ -d "$KDMOVERRIDEDIR" ]; then
for part in $(run-parts --list "$KDMOVERRIDEDIR" 2>/dev/null || true); do
. "$part"
done
fi

# we update kdm configuration files (only overridden values)
[ -n "$USEBACKGROUND" ] && sed -i "s|^#\?UseBackground=.*|UseBackground=$USEBACKGROUND|" $KDMCFG
[ -n "$BACKGROUNDCFG" ] && sed -i "s|^#\?BackgroundCfg=.*|BackgroundCfg=$BACKGROUNDCFG|" $KDMCFG
[ -n "$USETHEME" ] && sed -i "s|^#\?UseTheme=.*|UseTheme=$USETHEME|" $KDMCFG
[ -n "$THEME" ] && [ -e "$THEME" ] && sed -i "s|^#\?Theme=.*|Theme=$THEME|" $KDMCFG
[ -n "$LANGUAGE" ] && sed -i "s|^#\?Language=.*|Language=$LANGUAGE|" $KDMCFG

if grep -q "^[[:space:]]*Wallpaper=stripes.png" ${BACKGROUNDRC}; then
[ -n "$WALLPAPER" ] && [ -e "$WALLPAPER" ] && sed -i "s|^#\?Wallpaper=.*|Wallpaper=`readlink -f $WALLPAPER`|" $BACKGROUNDCFG
fi

# usetheme is now on "by default" so we need to be sure Theme is not invalid ...
sed -i "s|@@@ToBeReplacedByDesktopBase@@@|$DEFAULT_KDM_THEME|" ${KDMCFG}

# autologin overrides are useful for live debian environment
if [ -n "$AUTOLOGINUSER" ]; then
sed -i "s|^#\?AutoLoginEnable=.*|AutoLoginEnable=true|" $KDMCFG
sed -i "s|^#\?AutoLoginUser=.*|AutoLoginUser=$AUTOLOGINUSER|" $KDMCFG
fi
[ -n "$AUTOLOGINDELAY" ] && sed -i "s|^#\?AutoLoginDelay=.*|AutoLoginDelay=$AUTOLOGINDELAY|" $KDMCFG
[ -n "$AUTOLOGINAGAIN" ] && sed -i "s|^#\?AutoLoginAgain=.*|AutoLoginAgain=$AUTOLOGINAGAIN|" $KDMCFG
[ -n "$AUTOLOGINLOCKED" ] && sed -i "s|^#\?AutoLoginLocked=.*|AutoLoginLocked=$AUTOLOGINLOCKED|" $KDMCFG
fi
return 0
}

# If we upgraded the daemon, we can't use the --exec argument to
# start-stop-daemon since the inode will have changed.  The risk here is that
# in a situation where the daemon died, its pidfile was not cleaned up, and
# some other process is now running under that pid, start-stop-daemon will send
# signals to an innocent process.  However, this seems like a corner case.
# C'est la vie!
if [ -e $UPGRADEFILE ]; then
SSD_ARGS="--pidfile $PIDFILE --startas $DAEMON"
else
SSD_ARGS="--pidfile $PIDFILE --exec $DAEMON"
fi

still_running () {
if expr "$(cat /proc/$DAEMONPID/cmdline 2> /dev/null)" : "$DAEMON" > /dev/null 2>&1; then
true
else
# if the daemon does not remove its own pidfile, we will
rm -f $PIDFILE $UPGRADEFILE
false
fi;
}

case "$1" in
start)
setup_config
if [ -e $DEFAULT_DISPLAY_MANAGER_FILE ] &&
[ "$HEED_DEFAULT_DISPLAY_MANAGER" = "true" ] &&
[ "$(cat $DEFAULT_DISPLAY_MANAGER_FILE)" != "$DAEMON" ]; then
log_action_msg "Not starting K Display Manager (kdm); it is not the default display manager."
else
log_daemon_msg "Starting K Display Manager" "kdm"
if start-stop-daemon --start --quiet $SSD_ARGS -- $ARG ; then
log_end_msg 0
else
log_action_end_msg 1 "already running"
fi
fi
;;

restart)
/etc/init.d/kdm stop
if [ -f $PIDFILE ]; then
if still_running; then
exit 1
fi
fi
/etc/init.d/kdm start
;;

reload)
log_action_begin_msg "Reloading K Display Manager configuration..."
if start-stop-daemon --stop --signal 1 --quiet $SSD_ARGS; then
log_action_end_msg 0
else
log_action_end_msg 1 "kdm not running"
fi
;;

force-reload)
/etc/init.d/kdm reload
;;

stop)
log_action_begin_msg "Stopping K Display Manager: kdm"
if [ ! -f $PIDFILE ]; then
log_action_end_msg 0 " not running ($PIDFILE not found)"
exit 0
else
DAEMONPID=$(cat $PIDFILE | tr -d '[:blank:]')
KILLCOUNT=1
if [ ! -e $UPGRADEFILE ]; then
if start-stop-daemon --stop --quiet $SSD_ARGS; then
# give kdm's signal handler a second to catch its breath
sleep 1
else
log_action_cont_msg " not running"
fi
fi
while [ $KILLCOUNT -le 5 ]; do
if still_running; then
kill $DAEMONPID
else
break
fi
sleep 1
KILLCOUNT=$(( $KILLCOUNT + 1 ))
done
if still_running; then
log_action_cont_msg " not responding to TERM signal (pid $DAEMONPID)"
else
rm -f $UPGRADEFILE
fi
fi
log_action_end_msg 0
;;
status)
status_of_proc -p "$PIDFILE" "$DAEMON" kdm && exit 0 || exit $?
;;

*)
echo "Usage: /etc/init.d/kdm {start|stop|restart|reload|force-reload|status}"
exit 1
;;
esac

exit 0

La solución que encontré entonces fue crearme mi propio script de arranque, el cual sirve para KDM o cualquier otra aplicación que deseemos iniciar, el cual contiene esto:

#! /bin/sh
PATH=/sbin:/bin
. /lib/init/vars.sh
. /lib/lsb/init-functions

case "$1" in
start|"")
/usr/bin/kdm
;;
stop)
# No-op
;;
*)
echo "Usage: kdm [start|stop|restart]" >&2
exit 3
;;
esac

Ahora, para que inicie automáticamente KDM es necesario activar dicho escript, por lo que hago uso de RCConf para ello. Y listo. No obstante, yo recomiendo usar el original 😛