diff options
Diffstat (limited to 'scripts/runqemu-ifup')
| -rwxr-xr-x | scripts/runqemu-ifup | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/scripts/runqemu-ifup b/scripts/runqemu-ifup index 987a37a1a..870cb6bcb 100755 --- a/scripts/runqemu-ifup +++ b/scripts/runqemu-ifup @@ -69,12 +69,29 @@ if [ "x$IFCONFIG" = "x" ]; then # better than nothing... IFCONFIG=/sbin/ifconfig fi +if [ ! -x "$IFCONFIG" ]; then + echo "$IFCONFIG cannot be executed" + exit 1 +fi ROUTE=`which route` if [ "x$ROUTE" = "x" ]; then # better than nothing... ROUTE=/sbin/route fi +if [ ! -x "$ROUTE" ]; then + echo "$ROUTE cannot be executed" + exit 1 +fi + +IPTABLES=`which iptables 2> /dev/null` +if [ "x$IPTABLES" = "x" ]; then + IPTABLES=/sbin/iptables +fi +if [ ! -x "$IPTABLES" ]; then + echo "$IPTABLES cannot be executed" + exit 1 +fi n=$[ (`echo $TAP | sed 's/tap//'` * 2) + 1 ] $IFCONFIG $TAP 192.168.7.$n @@ -83,11 +100,6 @@ dest=$[ (`echo $TAP | sed 's/tap//'` * 2) + 2 ] $ROUTE add -host 192.168.7.$dest $TAP # setup NAT for tap0 interface to have internet access in QEMU -IPTABLES=`which iptables` -if [ "x$IPTABLES" = "x" ]; then - IPTABLES=/sbin/iptables -fi - $IPTABLES -A POSTROUTING -t nat -j MASQUERADE -s 192.168.7.0/24 echo 1 > /proc/sys/net/ipv4/ip_forward $IPTABLES -P FORWARD ACCEPT |