X-Git-Url: https://review.fuel-infra.org/gitweb?a=blobdiff_plain;f=cirros-testvm%2Fsrc-cirros%2Fsrc%2Fsbin%2Fcirros-dhcpc;fp=cirros-testvm%2Fsrc-cirros%2Fsrc%2Fsbin%2Fcirros-dhcpc;h=9b095a619d9ee82030c5de9fbb02e828905cba8e;hb=b0a0f15dfaa205161a7fcb20cf1b8cd4948c2ef3;hp=0000000000000000000000000000000000000000;hpb=c6ac3cd55ee2da956195eee393b0882105dfad4e;p=packages%2Ftrusty%2Fcirros-testvm.git

diff --git a/cirros-testvm/src-cirros/src/sbin/cirros-dhcpc b/cirros-testvm/src-cirros/src/sbin/cirros-dhcpc
new file mode 100755
index 0000000..9b095a6
--- /dev/null
+++ b/cirros-testvm/src-cirros/src/sbin/cirros-dhcpc
@@ -0,0 +1,156 @@
+#!/bin/sh
+# A simple wrapper around udhcpc so that we are able to dynamically specify
+# which options it should ask for.
+
+# note: ifupdown does not allow VERBOSITY through. can be set in OPTS_FILE.
+VERBOSITY="${VERBOSITY:-0}"
+
+. ${CIRROS_SHLIB:=/lib/cirros/shlib} ||
+	{ echo "failed to read ${CIRROS_SHLIB}" 1>&2; exit 1; }
+
+set -f
+
+# ensure PATH has /sbin in it.
+path_has /sbin || PATH="$PATH:/sbin"
+
+OPTS_FILE="/etc/default/udhcpc"
+RESOLV_CONF="/etc/resolv.conf"
+
+apply_static_routes() {
+	# routes are pairs of network and gateway
+	# 169.254.169.254/32 10.65.0.128
+	local net="" router="" err=0
+	while [ $# -ne 0 ]; do
+		net="$1"
+		router="$2"
+		[ -n "$net" ] || continue
+		debug 1 "adding net $net with router $router"
+		route add -net "$net" gw "$router" || {
+			error "WARN: failed: route add -net \"$net\" gw \"$router\""
+			err=$(($err+1));
+		}
+		shift 2 || {
+			error "apply_static_routes: failed shift 2. odd number of args?"
+			return 1;
+		}
+	done
+	return $err
+}
+
+
+readconfig() {
+	[ ! -f "$OPTS_FILE" ] || . "$OPTS_FILE" ||
+		{ error "failed to read $OPTS_FILE"; return 1; }
+	# these are expected to be set.
+	OPTIONS=${OPTIONS:-staticroutes mtu}
+	TIMEOUT=${TIMEOUT:-60}
+	MTU=${MTU:-1500}
+}
+
+up() {
+	[ $# -ge 1 ] || { error "$0 up: must provide interface"; return 1; }
+	local iface="$1" opts="" hostname=""
+
+	readconfig || return
+	hostname=$(hostname 2>/dev/null)
+
+	# Gather all options and start udhcpc.
+	for opt in $OPTIONS; do
+		opts="-O $opt $opts"
+	done
+
+	debug 1 "Starting udhcpc on $iface, asking for options {$OPTIONS}"
+	udhcpc -p "/var/run/udhcpc.${iface}.pid" -R -n \
+		${TIMEOUT:+-T "${TIMEOUT}"} -i "$iface" -s "$0" \
+		$opts ${hostname:+-x "hostname:${hostname}"}
+}
+
+down() {
+	local iface="$1" pidfile="" pid=""
+	[ $# -ge 1 ] || { error "$0 down: must provide interface"; return 1; }
+	pidfile="/var/run/udhcpc.$iface.pid"
+	[ -f "$pidfile" ] ||
+		{ error "$iface: no pidfile"; return 1; }
+	read pid < "$pidfile" ||
+		{ error "failed to read pid from '$pidfile' for '$iface'"; return 1; }
+	kill $pid >/dev/null
+	return
+}
+
+renew_bound() {
+	local flags="" mode="$1" i=""
+	shift;
+	[ -n "$interface" ] ||
+		{ error "$0 $mode: 'interface' not provided"; return 1; }
+
+	[ -n "$ip" ] ||
+		{ error "$0 $mode: 'ip' not set in environment"; return 1; }
+
+	readconfig || return
+
+	[ -n "$broadcast" ] && flags="${flags}broadcast $broadcast "
+	[ -n "$subnet" ] && flags="${flags}netmask $subnet "
+	flags="${flags}mtu ${mtu:-${MTU}} "
+	flags=${flags% }
+
+	debug 1 "ifconfig $interface $ip $flags"
+	ifconfig $interface $ip $flags || {
+		error "$0 $mode: failed: 'ifconfig $interface $ip $flags'";
+		return 1;
+	}
+
+	if [ -n "$router" ] ; then
+		local out="" ret=""
+		debug 2 "deleting routers"
+		while :; do
+			out=$(route del default gw 0.0.0.0 dev $interface 2>&1)
+			ret=$?
+			[ $ret -eq 0 ] && break
+			case "$out" in
+				*SIOCDELRT*[Nn]o\ such\ process*) break;;
+			esac
+			error "deleting routes failed: $out" 1>&2
+		done
+
+		for i in $router; do
+			debug 1 "route add default gw $i dev $interface"
+			route add default gw $i dev $interface
+		done
+	fi
+
+	local msg="configuring $RESOLV_CONF for $interface. domain=$domain"
+	msg="$msg nameservers: $dns"
+	debug 1 "$msg"
+	{
+		[ -n "$domain" ] && echo "search $domain"
+		for i in $dns ; do
+			echo nameserver $i
+		done
+	} > "$RESOLV_CONF"
+
+	apply_static_routes $staticroutes
+}
+
+case "$1" in
+	up)
+		shift
+		up "$@"
+		;;
+	down)
+		shift;
+		down "$@"
+		;;
+	deconfig)
+		ifconfig $interface 0.0.0.0
+		;;
+	renew|bound)
+		renew_bound "$@";
+		;;
+	*)
+		error "Usage: $0 <up|down>"
+		exit 1
+		;;
+esac
+
+exit
+# vi: ts=4 noexpandtab syntax=sh