source: bootscripts-standard/bootscripts/cblfs/sysconfig/network-devices/services/dhcpcd@ e814bfe

#!/bin/bash
# Begin $network-devices/services/dhcpcd

# Based upon lfs-bootscripts-1.12 $network_devices/if{down,up}
# Rewritten by Nathan Coulson <nathan@linuxfromscratch.org>
# Adapted for dhcpcd by DJ Lucas <dj@lucasit.com>

. /etc/sysconfig/rc
. $rc_functions
. $IFCONFIG

pidfile="/run/dhcpcd-$1.pid"

case "$2" in
        up)
                boot_mesg -n "Starting DHCPCD on the $1 interface..."
                # Test to see if there is a stale pid file
                if [ -f "$pidfile" ]; then
                        ps `cat "$pidfile"` | grep dhcpcd > /dev/null
                        if [ $? != 0 ]; then
                                rm -f $pidfile > /dev/null
                        else
                                boot_mesg "dhcpcd already running!" ${WARNING}
                                echo_warning
                                exit 2
                        fi
                fi
                /sbin/dhcpcd $1 $DHCP_START
                # Save the return value
                RET="$?"
                echo ""
                $(exit "$RET")
                evaluate_retval
        ;;

        down)
                boot_mesg -n "Stopping DHCPCD on the $1 interface..."
                if [ -z "$DHCP_STOP" ]; then
                        echo ""
                        killproc -p "$pidfile" /sbin/dhcpcd
                else
                        /sbin/dhcpcd $1 $DHCP_STOP &> /dev/null
                        RET="$?"
                        if [ "$RET" -eq 0 ]; then
                                echo ""
                                echo_ok
                        elif [ "$RET" -eq 1 ]; then
                                boot_mesg "dhcpcd not running!" ${WARNING}
                                echo_warning
                        else
                                echo ""
                                echo_failure
                        fi
                fi
        ;;

        *)
                echo "Usage: $0 [interface] {up|down}"
                exit 1
        ;;
esac

# End $network_devices/services/dhcpcd