- provide stdin for the daemons that just must have it,

[projects/rc-scripts.git] / lib / ifup-sl

#!/bin/sh
#
#	$Id$
#
PATH=/sbin:/usr/sbin:/bin:/usr/bin

# ifup-post can't be done for slip :-( Solution: use PPP

. /etc/sysconfig/network
. /etc/rc.d/init.d/functions
. /lib/rc-scripts/functions.network

# become a daemon in case we have to persist.
if [ "$1" != daemon ] ; then
	# disconnect stdin, out, err to disassociate from controlling tty
	# so that no HUPs will get through.
	$0 daemon $*& </dev/null >/dev/null 2>/dev/null
	exit 0
fi
shift

CONFIG=$1
source_config

if [ "foo$2" = "fooboot" ] && is_no ${ONBOOT}; then
	exit
fi

# set all major variables
setup_ip_param

if [ -z "$RETRYTIMEOUT" ]; then
	RETRYTIMEOUT=30
fi

# Try to load slip module
if is_module "slip"; then
	/sbin/modprobe -s slip
fi

# we can use dip or direct slip connection via slattach
if is_no "$DIRECT_CONNECT"; then
	[ -x /usr/sbin/dip ] || {
		nls "%s does not exist or is not executable" "/usr/sbin/dip"
		nls "%s for %s exiting" "ifup-sl" "$DEVICE"
		logger -p daemon.info -t ifup-sl \
			"$(nls '%s does not exist or is not executable for %s' "/usr/sbin/dip" "$DEVICE")"
		exit 1
	}

	DIPSCRIPT=/etc/sysconfig/interfaces/data/dip-$DEVNAME
	[ -f $DIPSCRIPT ] || {
		DIPSCRIPT=/etc/sysconfig/interfaces/data/dip-$PARENTDEVNAME
	}
	[ -f $DIPSCRIPT ] || {
		nls '%s does not exist' "/etc/sysconfig/interfaces/data/dip-$DEVICE"
		nls 'ifup-sl - %s exiting' "$DEVICE"
		logger -p daemon.info -t ifup-sl \
			"$(nls '%s does not exist for %s' "/etc/sysconfig/interfaces/data/dip-$DEVICE" "$DEVICE")"
		exit 1
	}

	while : ; do
		echo > /var/run/sl-$DEVICE.dev
		(logger -p daemon.info -t ifup-sl \
			"$(nls 'dip started for %s on %s at %s' "$DEVICE" "$MODEMPORT" "$LINESPEED")" &)&
		doexec /usr/sbin/dip dip-$DEVICE $DIPSCRIPT
		if is_no "$PERSIST" || [ ! -f /var/run/sl-$DEVICE.dev ] ; then
			exit 0
		fi
		rm -f /var/run/sl-$DEVICE.dev

		sleep $RETRYTIMEOUT || {
			# sleep was killed
			exit 0
		}
	done
else
	# direct connection via slattach
	[ -z "$MTU" ] && MTU=1500
	[ -z "$PROTOCOL" ] && PROTOCOL=slip

	[ -x /sbin/slattach ] || {
		nls "%s is missing. Can't continue." "/sbin/slattach"
		nls "ifup-sl - %s exiting" "$DEVICE"
		logger -p daemon.info -t ifup-sl \
			"$(nls '%s does not exist or is not executable for %s' "/sbin/slattach" "$DEVICE")"
		exit 1
	}

	echo > /var/run/sl-$DEVICE.dev
	(logger -p daemon.info -t ifup-sl \
		"$(nls 'slattach started for %s on %s at %s' "$DEVICE" "$MODEMPORT" "$LINESPEED")" &)&

	slattach -p $PROTOCOL -s $LINESPEED $MODEMPORT &
	usleep 1500

	if is_yes "$IPV4_NETWORKING"; then
		if [ -n "$IP4ADDR" -a -n "$REMIP" ]; then
			# Peer is only for IPv4
			ip -4 addr add $IP4ADDR peer $REMIP dev $DEVICE
		fi
	fi

	if is_yes "$IPV6_NETWORKING"; then
		if [ -n "$IP6ADDR" ]; then
			ip -6 addr add $IP6ADDR dev $DEVICE
		fi
	fi

	ip link set $DEVICE mtu $MTU up

	# IPv4/6 gateways and default routes
	setup_ip_gw_ro

	/lib/rc-scripts/ifup-post $1
fi