Personal Computer World 2007 September/PCWSEP07.iso/Software/Linux/Linux Mint 3.0 Light/LinuxMint-3.0-Light.iso/casper/filesystem.squashfs/etc/init.d/hplip

Text File | 2007-04-04 | 4.4 KB | 217 lines

#! /bin/sh
# hplip    initscript for the HP Linux Printing and Imaging System
# Copyright (c) 2004-2006 by Henrique de Moraes Holschuh <[e-mail]>
# Distributed under the GPLv2 or newer
#
# $Id: hplip.init,v 1.16 2006/10/26 15:39:43 hmh Exp $

PATH=/sbin:/bin:/usr/sbin:/usr/bin
DESC="HP Linux Printing and Imaging System"

# For manual setuid/gid
SUID_USER=hplip
SGID_GROUP=lp

DAEMON1=/usr/sbin/hpiod
NAME1=hpiod
PROCNAME1=$NAME1
PIDFILE1=/var/run/hplip/hpiod.pid

DAEMON2=/usr/sbin/hpssd
NAME2=hpssd
PROCNAME2=python
PIDFILE2=/var/run/hplip/hpssd.pid
FILES2="/var/run/hplip/hpssd.pid /var/run/hplip/hpssd.port"

HPIODOPTIONS=
HPSSDOPTIONS=
RUN_HPIOD_AS_ROOT=yes

[ -r /etc/default/hplip ] && . /etc/default/hplip

case "$RUN_HPLIP" in
       [nN]*) exit 0
esac

test -x ${DAEMON1} || exit 0

. /lib/lsb/init-functions

set -e

###
### dpkg-statoverride support
###

createdir() {
# $1 = user
# $2 = group
# $3 = permissions (octal)
# $4 = path to directory
    [ -d "$4" ] || mkdir -p -m "$3" "$4"
    chown -R -H --preserve-root "$1:$2" "$4"
    chmod "$3" "$4"
}

fixdirs() {
        dir=$(dpkg-statoverride --list /var/run/hplip) || {
        echo "You are missing a dpkg-statoverride on /var/run/hplip.  Fix it, otherwise you risk silent breakage on upgrades.  If you have no idea what to do, just reinstall hplip and it will fix itself." >&2
        exit 1
    }
    [ -z "$dir" ] || createdir $dir
    # clear exit status
    :
}

###

DIDSOMETHING=0
reload_cups() {
    if [ ${DIDSOMETHING} -ne 0 ] ; then
        # Tell cupsys that we (may) have a new ative backend
        # be silent about it to avoid unneeded hassles duing
        # shutdowns -- it is not like we care if this suceeds or
        # not...
        invoke-rc.d --quiet cupsys reload >/dev/null 2>&1 || true
    fi
    return 0
}

start_daemon() {
    DAEMON="$1"
    PIDFILE="$2"
    NAME="$3"
    PROCNAME="$4"
    SSDOPT="$5"
    DAEMONOPT="$6"

    START="--start --quiet --pidfile ${PIDFILE} --startas ${DAEMON} --name ${PROCNAME} ${SSDOPT}"
    [ -n "${DAEMONOPT}" ] && START="${START} -- ${DAEMONOPT}"
    if start-stop-daemon ${START} >/dev/null 2>&1 ; then
        #success
        DIDSOMETHING=1
    else
        if start-stop-daemon --test ${START} >/dev/null 2>&1; then
            #failed
            return 1
        else
            #already running
            return 0
        fi
    fi
    return 0
}

stop_daemon() {
    DAEMON="$1"
    PIDFILE="$2"
    NAME="$3"
    PROCNAME="$4"

    # yes, it is --start. go read the manpage
    STOP="--start --quiet --pidfile ${PIDFILE} --startas ${DAEMON} --name ${PROCNAME}"

    if start-stop-daemon --stop --quiet --pidfile ${PIDFILE} \
        --retry 10 --name ${PROCNAME} \
        >/dev/null 2>&1 ; then
            # success
            DIDSOMETHING=1
            # FIXME: change hpiod so that this is not necessary
            sleep 2
    else
        if start-stop-daemon --test ${STOP} >/dev/null 2>&1; then
            # already stopped
            return 0
        else
            # failed, still running
            return 1
        fi
    fi
    return 0
}

do_start () {
    log_daemon_msg "Starting ${DESC}"
    fixdirs
    case "$RUN_HPIOD_AS_ROOT" in
           [nN]*) HPIOD_SSDOPT="--chuid ${SUID_USER} --group ${SGID_GROUP}";;
    *)     HPIOD_SSDOPT=""
    esac
    log_progress_msg "${NAME1}"
    if start_daemon "${DAEMON1}" "${PIDFILE1}" "${NAME1}" \
        "${PROCNAME1}" "${HPIOD_SSDOPT}" \
        "${HPIODOPTIONS}" && \
       {
         log_progress_msg "${NAME2}"
         for i in ${FILES2} ; do
             [ -f "$i" ] && chown "${SUID_USER}:${SGID_GROUP}" "$i"
        :
         done
         start_daemon "${DAEMON2}" "${PIDFILE2}" "${NAME2}" \
           "${PROCNAME2}" "--chuid ${SUID_USER} --group ${SGID_GROUP}" \
        "${HPSSDOPTIONS}"
       } ; then
       log_end_msg 0
       reload_cups
    else
       log_end_msg 1 || true
       return 1
    fi
    return 0
}

do_stop () {
    log_daemon_msg "Stopping ${DESC}"
        log_progress_msg "${NAME1}"
    if stop_daemon "${DAEMON2}" "${PIDFILE2}" "${NAME2}" \
            "${PROCNAME2}"
    then
       log_progress_msg "${NAME2}"
       stop_daemon "${DAEMON1}" "${PIDFILE1}" "${NAME1}" \
               "${PROCNAME1}" && {
         log_end_msg 0
         return 0
       }
       log_end_msg 1 || true
       return 1
    else
       log_end_msg 1 || true
       log_daemon_msg "Stopping ${DESC}"
       log_progress_msg "${NAME2}"
       if stop_daemon "${DAEMON1}" "${PIDFILE1}" "${NAME1}" \
               "${PROCNAME1}" ;
       then
         log_end_msg 1 || true
       else
         log_end_msg 0
       fi
       log_failure_msg "Failed to stop all components of ${DESC}."
       return 1
    fi
}

case "$1" in
  start)
      set -e
      do_start
      exit 0
    ;;
  stop)
      set -e
      do_stop
      exit 0
    ;;
  restart|force-reload)
      do_stop || true
    set -e
    do_start
    exit 0
    ;;
  *)
    log_warning_msg "Usage: $0 {start|stop|restart|force-reload}"
    exit 1
    ;;
esac

exit 0