| #!/bin/sh |
| |
| # udhcpc script edited by Tim Riker <Tim@Rikers.org> |
| |
| [ -z "$1" ] && echo "Error: should be called from udhcpc" && exit 1 |
| |
| RESOLV_CONF="/etc/resolv.conf" |
| [ -n "$subnet" ] && NETMASK="netmask $subnet" |
| |
| # return 0 if root is mounted on a network filesystem |
| root_is_nfs() { |
| sed -n 's/^[^ ]* \([^ ]*\) \([^ ]*\) .*$/\1 \2/p' /proc/mounts | |
| grep -q "^/ \(nfs\|smbfs\|ncp\|coda\)$" |
| } |
| |
| have_bin_ip=0 |
| if [ -x /SBIN_DIR/ip ]; then |
| have_bin_ip=1 |
| BROADCAST="broadcast +" |
| fi |
| |
| [ -n "$broadcast" ] && BROADCAST="broadcast $broadcast" |
| |
| case "$1" in |
| deconfig) |
| if [ -x /SBIN_DIR/resolvconf ]; then |
| /SBIN_DIR/resolvconf -d "${interface}.udhcpc" |
| fi |
| if ! root_is_nfs ; then |
| if [ $have_bin_ip -eq 1 ]; then |
| /SBIN_DIR/ip -4 addr flush dev $interface |
| /SBIN_DIR/ip link set dev $interface up |
| else |
| /SBIN_DIR/ifconfig $interface 0.0.0.0 |
| fi |
| fi |
| ;; |
| |
| renew|bound) |
| if [ $have_bin_ip -eq 1 ]; then |
| /SBIN_DIR/ip addr add dev $interface local $ip/$mask $BROADCAST |
| else |
| /SBIN_DIR/ifconfig $interface $ip $BROADCAST $NETMASK |
| fi |
| |
| if [ -n "$router" ] ; then |
| if ! root_is_nfs ; then |
| if [ $have_bin_ip -eq 1 ]; then |
| while /SBIN_DIR/ip route del default dev $interface 2>/dev/null ; do |
| : |
| done |
| else |
| while /SBIN_DIR/route del default gw 0.0.0.0 dev $interface 2>/dev/null ; do |
| : |
| done |
| fi |
| fi |
| |
| metric=10 |
| for i in $router ; do |
| if [ $have_bin_ip -eq 1 ]; then |
| /SBIN_DIR/ip route add default via $i metric $metric dev $interface |
| else |
| /SBIN_DIR/route add default gw $i dev $interface metric $metric 2>/dev/null |
| fi |
| metric=$(($metric + 1)) |
| done |
| fi |
| |
| # Update resolver configuration file |
| R="" |
| [ -n "$domain" ] && R="domain $domain |
| " |
| for i in $dns; do |
| echo "$0: Adding DNS $i" |
| R="${R}nameserver $i |
| " |
| done |
| |
| if [ -x /SBIN_DIR/resolvconf ]; then |
| echo -n "$R" | /SBIN_DIR/resolvconf -a "${interface}.udhcpc" |
| else |
| echo -n "$R" > "$RESOLV_CONF" |
| fi |
| ;; |
| esac |
| |
| exit 0 |