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|
#!/bin/sh
### BEGIN INIT INFO
# Provides: ipw3945d
# Required-Start: mountkernfs $local_fs
# Required-Stop: $local_fs
# Default-Start: S
# Default-Stop: 0 6
# Short-Description: Starts Intel regulatory daemon (ipw3945d)
# Description: Starts the binary userspace regulatory daemon, required
# for operation of Intel/PRO Wireless 3945ABG cards
### END INIT INFO
. /lib/lsb/init-functions
DAEMON_OWNER="Debian-ipw3945d:Debian-ipw3945d"
DAEMON_BINARY="/sbin/ipw3945d"
SYS_CMD_PERM="744"
DAEMON_PID_DIR="/var/run/ipw3945d"
DAEMON_PID_FILE="${DAEMON_PID_DIR}/ipw3945d.pid"
DAEMON_LOG_FILE="/var/log/ipw3945d/ipw3945d.log"
# Occasionally we will be started by a modprobe hook very early,
# when the filesystem might not be mounted rw yet. In this case
# daemon will fail to start, as it will be unable to write its
# pid file. This function may be used to check for it.
can_write_pid() {
check="${DAEMON_PID_DIR}/can_write"
if touch "${check}" > /dev/null 2>&1; then
res=0
rm -f "${check}"
else
res=1
fi
return "${res}"
}
# If the driver is loaded, some entries in the /sys tree should
# appear. If they are not there, it might be that we just
# need to wait a bit for them to appear and then adjust their
# permissions and ownership appropriately.
have_sys_entries() {
res=1
for delay in 0 1 2 4
do
sleep "${delay}"
cmd="$(echo /sys/bus/pci/drivers/ipw3945/*/cmd)"
if test -e "${cmd}"; then
chown "${DAEMON_OWNER}" ${cmd}
chmod "${SYS_CMD_PERM}" ${cmd}
res=0
break
fi
done
return "${res}"
}
# Check for a stale pid file and remove it, if present. If there is
# a non-zero argument, the removal is silent (no warning emitted).
# Also, try stopping the daemon if it is running without a pid file.
remove_stale_pid() {
if test -e "${DAEMON_PID_FILE}"; then
pid=$(cat "${DAEMON_PID_FILE}")
msg="Removing stale pid file ${DAEMON_PID_FILE} (pid ${pid} not running)."
if ! kill -0 "${pid}" > /dev/null 2>&1; then
test -n "${1}" || log_warning_msg "${msg}"
rm -f "${DAEMON_PID_FILE}"
fi
else
# Under some rare circumstances it is possible that daemon
# is running, but pid file is missing (bug #401558). So, if we
# don't have a pid file, we try to kill it by name just in case.
start-stop-daemon --stop --quiet --exec /sbin/ipw3945d \
--signal HUP > /dev/null 2>&1
fi
}
start_daemon() {
if have_sys_entries; then
remove_stale_pid
log_daemon_msg "Starting ipw3945 regulatory daemon" "ipw3945d"
start-stop-daemon --start --quiet --chuid "${DAEMON_OWNER}" \
--exec "${DAEMON_BINARY}" --pidfile "${DAEMON_PID_FILE}" \
--oknodo -- --pid-file=${DAEMON_PID_FILE} --quiet \
--log-file=${DAEMON_LOG_FILE} > /dev/null 2>&1
code=$?
log_end_msg ${code}
sleep 3
else
log_warning_msg "Not starting ipw3945 regulatory daemon, driver not loaded."
fi
}
stop_daemon () {
log_daemon_msg "Stopping ipw3945 regulatory daemon" "ipw3945d"
start-stop-daemon --stop --quiet --pidfile "${DAEMON_PID_FILE}" \
--signal HUP > /dev/null 2>&1
# Daemon does not clean up its pid file when exiting on a signal
remove_stale_pid quietly
log_end_msg 0
}
# Create a pid directory if one does not exist. This may happen if
# user has chosen to put /var/run on tmpfs.
make_pid_dir () {
test -d "${DAEMON_PID_DIR}" && return
mkdir -m 0755 "${DAEMON_PID_DIR}"
chown "${DAEMON_OWNER}" "${DAEMON_PID_DIR}"
}
test -x "${DAEMON_BINARY}" || exit 0
case "$1" in
start)
make_pid_dir
start_daemon
;;
stop)
stop_daemon
;;
restart|force-reload)
stop_daemon
start_daemon
;;
# The modprobe-* targets are supposed to be used
# from modprobe hooks only.
modprobe-start)
make_pid_dir
can_write_pid || exit 0
start_daemon
;;
modprobe-stop)
stop_daemon
;;
*)
echo "Usage: ${0} {start|stop|restart|force-reload}"
exit 1
;;
esac
exit 0
|
