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|
#! /bin/sh
### BEGIN INIT INFO
# Provides: qemu-guest-agent
# Required-Start: $remote_fs $syslog
# Required-Stop: $remote_fs $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: QEMU Guest Agent startup script
# Description: Start the QEMU Guest Agent if we're running
# in a QEMU virtual machine
### END INIT INFO
# Author: Michael Tokarev <mjt@tls.msk.ru>
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="QEMU Guest Agent"
NAME=qemu-ga
DAEMON=/usr/sbin/$NAME
PIDFILE=/var/run/$NAME.pid
# config
DAEMON_ARGS=""
# default transport
TRANSPORT=virtio-serial:/dev/virtio-ports/org.qemu.guest_agent.0
# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0
# Read configuration variable file if it is present
[ -r /etc/default/qemu-guest-agent ] && . /etc/default/qemu-guest-agent
# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh
# Define LSB log_* functions.
# Depend on lsb-base (>= 3.2-14) to ensure that this file is present
# and status_of_proc is working.
. /lib/lsb/init-functions
#
# Function that checks whenever system has necessary environment
# It also splits $TRANSPORT into $method and $path
#
do_check_transport() {
method=${TRANSPORT%%:*}; path=${TRANSPORT#*:}
case "$method" in
virtio-serial | isa-serial)
if [ ! -e "$path" ]; then
log_warning_msg "$NAME: transport endpoint not found, not starting"
return 1
fi
;;
esac
}
#
# Function that starts the daemon/service
#
do_start()
{
# Return
# 0 if daemon has been started
# 1 if daemon was already running
# 2 if daemon could not be started
start-stop-daemon -Sq -p $PIDFILE -x $DAEMON --test > /dev/null \
|| return 1
start-stop-daemon -Sq -p $PIDFILE -x $DAEMON -- --daemonize \
$DAEMON_ARGS -m "$method" -p "$path" \
|| return 2
}
#
# Function that stops the daemon/service
#
do_stop()
{
# Return
# 0 if daemon has been stopped
# 1 if daemon was already stopped
# 2 if daemon could not be stopped
# other if a failure occurred
start-stop-daemon -Kq --retry=TERM/30/KILL/5 -p $PIDFILE --name $NAME
}
case "$1" in
start)
do_check_transport || exit 0
[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" $NAME
do_start
case "$?" in
0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
esac
;;
stop)
[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" $NAME
do_stop
case "$?" in
0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
esac
;;
status)
status_of_proc "$DAEMON" $NAME && exit 0 || exit $?
;;
restart|force-reload) # we do not support reload
do_check_transport || exit 0
log_daemon_msg "Restarting $DESC" $NAME
do_stop
case "$?" in
0|1)
do_start
case "$?" in
0) log_end_msg 0 ;;
1) log_end_msg 1 ;; # Old process is still running
*) log_end_msg 1 ;; # Failed to start
esac
;;
*)
# Failed to stop
log_end_msg 1
;;
esac
;;
*)
echo "Usage: /etc/init.d/qemu-guest-agent {start|stop|status|restart|force-reload}" >&2
exit 3
;;
esac
:
|
