Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 1 | #!/bin/sh |
| 2 | |
| 3 | # udhcpc script edited by Tim Riker <Tim@Rikers.org> |
| 4 | |
| 5 | [ -z "$1" ] && echo "Error: should be called from udhcpc" && exit 1 |
| 6 | |
| 7 | RESOLV_CONF="/etc/resolv.conf" |
| 8 | [ -n "$subnet" ] && NETMASK="netmask $subnet" |
| 9 | |
| 10 | # return 0 if root is mounted on a network filesystem |
| 11 | root_is_nfs() { |
| 12 | sed -n 's/^[^ ]* \([^ ]*\) \([^ ]*\) .*$/\1 \2/p' /proc/mounts | |
| 13 | grep -q "^/ \(nfs\|smbfs\|ncp\|coda\)$" |
| 14 | } |
| 15 | |
| 16 | have_bin_ip=0 |
| 17 | if [ -x /sbin/ip ]; then |
| 18 | have_bin_ip=1 |
| 19 | BROADCAST="broadcast +" |
| 20 | fi |
| 21 | |
| 22 | [ -n "$broadcast" ] && BROADCAST="broadcast $broadcast" |
| 23 | |
| 24 | case "$1" in |
| 25 | deconfig) |
| 26 | if [ -x /sbin/resolvconf ]; then |
| 27 | /sbin/resolvconf -d "${interface}.udhcpc" |
| 28 | fi |
| 29 | if ! root_is_nfs ; then |
| 30 | if [ $have_bin_ip -eq 1 ]; then |
| 31 | ip addr flush dev $interface |
| 32 | ip link set dev $interface up |
| 33 | else |
| 34 | /sbin/ifconfig $interface 0.0.0.0 |
| 35 | fi |
| 36 | fi |
| 37 | ;; |
| 38 | |
| 39 | renew|bound) |
| 40 | if [ $have_bin_ip -eq 1 ]; then |
| 41 | ip addr add dev $interface local $ip/$mask $BROADCAST |
| 42 | else |
| 43 | /sbin/ifconfig $interface $ip $BROADCAST $NETMASK |
| 44 | fi |
| 45 | |
| 46 | if [ -n "$router" ] ; then |
| 47 | if ! root_is_nfs ; then |
| 48 | if [ $have_bin_ip -eq 1 ]; then |
| 49 | while ip route del default dev $interface 2>/dev/null ; do |
| 50 | : |
| 51 | done |
| 52 | else |
| 53 | while route del default gw 0.0.0.0 dev $interface 2>/dev/null ; do |
| 54 | : |
| 55 | done |
| 56 | fi |
| 57 | fi |
| 58 | |
| 59 | metric=10 |
| 60 | for i in $router ; do |
| 61 | if [ $have_bin_ip -eq 1 ]; then |
| 62 | ip route add default via $i metric $metric |
| 63 | else |
| 64 | route add default gw $i dev $interface metric $metric 2>/dev/null |
| 65 | fi |
| 66 | metric=$(($metric + 1)) |
| 67 | done |
| 68 | fi |
| 69 | |
| 70 | # Update resolver configuration file |
| 71 | R="" |
| 72 | [ -n "$domain" ] && R="domain $domain |
| 73 | " |
| 74 | for i in $dns; do |
| 75 | echo "$0: Adding DNS $i" |
| 76 | R="${R}nameserver $i |
| 77 | " |
| 78 | done |
| 79 | |
| 80 | if [ -x /sbin/resolvconf ]; then |
| 81 | echo -n "$R" | /sbin/resolvconf -a "${interface}.udhcpc" |
| 82 | else |
| 83 | echo -n "$R" > "$RESOLV_CONF" |
| 84 | fi |
| 85 | ;; |
| 86 | esac |
| 87 | |
| 88 | exit 0 |