The cirros image was rebuilt against the 3.13.0-83 kernel, drivers e1000e, igbvf...

[packages/trusty/cirros-testvm.git] / cirros-testvm / src-cirros / src / sbin / cirros-dhcpc

diff --git a/cirros-testvm/src-cirros/src/sbin/cirros-dhcpc b/cirros-testvm/src-cirros/src/sbin/cirros-dhcpc
new file mode 100755 (executable)
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