openwrtv4/package/utils/ugps/files/ugps.init

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#!/bin/sh /etc/rc.common
# Copyright (c) 2014 OpenWrt.org
START=80
USE_PROCD=1
PROG=/usr/sbin/ugps
service_triggers() {
procd_add_reload_trigger gps
}
start_service() {
local tty="$(uci get gps.@gps[-1].tty)"
[ -d "/sys/class/tty/$tty/" ] || return
procd_open_instance
procd_set_param command "$PROG" "/dev/$tty"
procd_set_param respawn
procd_close_instance
}