wok-next diff udhcpc6-fake/stuff/etc/dhclient-script @ rev 19342
Up busybox (1.25.0), again
| author | Pascal Bellard <pascal.bellard@slitaz.org> |
|---|---|
| date | Wed Jul 20 09:51:19 2016 +0200 (2016-07-20) |
| parents | |
| children |
line diff
1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/udhcpc6-fake/stuff/etc/dhclient-script Wed Jul 20 09:51:19 2016 +0200 1.3 @@ -0,0 +1,266 @@ 1.4 +#!/bin/ash 1.5 + 1.6 +# dhclient-script for Linux. Dan Halbert, March, 1997. 1.7 +# Updated for Linux 2.[12] by Brian J. Murrell, January 1999. 1.8 +# Modified for Debian. Matt Zimmerman and Eloy Paris, December 2003 1.9 +# Modified to remove useless tests for antiquated kernel versions that 1.10 +# this doesn't even work with anyway, and introduces a dependency on /usr 1.11 +# being mounted, which causes cosmetic errors on hosts that NFS mount /usr 1.12 +# Andrew Pollock, February 2005 1.13 +# Modified to work on point-to-point links. Andrew Pollock, June 2005 1.14 +# Modified to support passing the parameters called with to the hooks. Andrew Pollock, November 2005 1.15 + 1.16 +# The alias handling in here probably still sucks. -mdz 1.17 + 1.18 +make_resolv_conf() { 1.19 + if [ -n "$new_domain_name" -o -n "$new_domain_name_servers" ]; then 1.20 + # Find out whether we are going to mount / rw 1.21 + exec 9>&0 </etc/fstab 1.22 + rootmode=rw 1.23 + while read dev mnt type opts dump pass junk; do 1.24 + [ "$mnt" != / ] && continue 1.25 + case "$opts" in 1.26 + ro|ro,*|*,ro|*,ro,*) 1.27 + rootmode=ro 1.28 + ;; 1.29 + esac 1.30 + done 1.31 + exec 0>&9 9>&- 1.32 + 1.33 + # Wait for /etc/resolv.conf to become writable 1.34 + if [ "$rootmode" = "rw" ]; then 1.35 + while [ ! -w /etc ]; do 1.36 + sleep 1 1.37 + done 1.38 + fi 1.39 + 1.40 + local new_resolv_conf=/etc/resolv.conf.dhclient-new 1.41 + rm -f $new_resolv_conf 1.42 + if [ -n "$new_domain_name" ]; then 1.43 + echo search $new_domain_name >>$new_resolv_conf 1.44 + else # keep 'old' search/domain scope 1.45 + egrep -i '^ *[:space:]*(search|domain)' /etc/resolv.conf >> $new_resolv_conf 1.46 + fi 1.47 + if [ -n "$new_domain_name_servers" ]; then 1.48 + for nameserver in $new_domain_name_servers; do 1.49 + echo nameserver $nameserver >>$new_resolv_conf 1.50 + done 1.51 + else # keep 'old' nameservers 1.52 + sed -n /^\w*[Nn][Aa][Mm][Ee][Ss][Ee][Rr][Vv][Ee][Rr]/p /etc/resolv.conf >>$new_resolv_conf 1.53 + fi 1.54 + chown root.root $new_resolv_conf 1.55 + chmod 644 $new_resolv_conf 1.56 + mv -f $new_resolv_conf /etc/resolv.conf 1.57 + fi 1.58 +} 1.59 + 1.60 +run_hook() { 1.61 + local script="$1" 1.62 + local exit_status 1.63 + shift # discard the first argument, then the rest are the script's 1.64 + 1.65 + if [ -f $script ]; then 1.66 + . $script "$@" 1.67 + fi 1.68 + 1.69 + 1.70 + if [ -n "$exit_status" ] && [ "$exit_status" -ne 0 ]; then 1.71 + logger -p daemon.err "$script returned non-zero exit status $exit_status" 1.72 + save_exit_status=$exit_status 1.73 + fi 1.74 + 1.75 + return $exit_status 1.76 +} 1.77 + 1.78 +run_hookdir() { 1.79 + local dir="$1" 1.80 + local exit_status 1.81 + shift # See run_hook 1.82 + 1.83 + if [ -d "$dir" ]; then 1.84 + for script in $(run-parts --list $dir); do 1.85 + run_hook $script "$@" || true 1.86 + exit_status=$? 1.87 + done 1.88 + fi 1.89 + 1.90 + return $exit_status 1.91 +} 1.92 + 1.93 +# Must be used on exit. Invokes the local dhcp client exit hooks, if any. 1.94 +exit_with_hooks() { 1.95 + exit_status=$1 1.96 + 1.97 + # Source the documented exit-hook script, if it exists 1.98 + if ! run_hook /etc/dhcp3/dhclient-exit-hooks "$@"; then 1.99 + exit_status=$? 1.100 + fi 1.101 + 1.102 + # Now run scripts in the Debian-specific directory. 1.103 + if ! run_hookdir /etc/dhcp3/dhclient-exit-hooks.d "$@"; then 1.104 + exit_status=$? 1.105 + fi 1.106 + 1.107 + exit $exit_status 1.108 +} 1.109 + 1.110 +set_hostname() { 1.111 + local current_hostname=$(hostname) 1.112 + if [ -z "$current_hostname" -o "$current_hostname" = "(none)" ]; then 1.113 + hostname "$new_host_name" 1.114 + fi 1.115 +} 1.116 + 1.117 +if [ -n "$new_broadcast_address" ]; then 1.118 + new_broadcast_arg="broadcast $new_broadcast_address" 1.119 +fi 1.120 +if [ -n "$old_broadcast_address" ]; then 1.121 + old_broadcast_arg="broadcast $old_broadcast_address" 1.122 +fi 1.123 +if [ -n "$new_subnet_mask" ]; then 1.124 + new_subnet_arg="netmask $new_subnet_mask" 1.125 +fi 1.126 +if [ -n "$old_subnet_mask" ]; then 1.127 + old_subnet_arg="netmask $old_subnet_mask" 1.128 +fi 1.129 +if [ -n "$alias_subnet_mask" ]; then 1.130 + alias_subnet_arg="netmask $alias_subnet_mask" 1.131 +fi 1.132 +if [ -n "$new_interface_mtu" ] && [ $new_interface_mtu -ge 575 ]; then 1.133 + mtu_arg="mtu $new_interface_mtu" 1.134 +fi 1.135 +if [ -n "$IF_METRIC" ]; then 1.136 + metric_arg="metric $IF_METRIC" # interfaces(5), "metric" option 1.137 +fi 1.138 + 1.139 + 1.140 +# The action starts here 1.141 + 1.142 +# Invoke the local dhcp client enter hooks, if they exist. 1.143 +run_hook /etc/dhcp3/dhclient-enter-hooks 1.144 +run_hookdir /etc/dhcp3/dhclient-enter-hooks.d 1.145 + 1.146 +# Execute the operation 1.147 +case "$reason" in 1.148 + MEDIUM|ARPCHECK|ARPSEND) 1.149 + # Do nothing 1.150 + ;; 1.151 + PREINIT) 1.152 + # The DHCP client is requesting that an interface be 1.153 + # configured as required in order to send packets prior to 1.154 + # receiving an actual address. - dhclient-script(8) 1.155 + 1.156 + if [ -n "$alias_ip_address" ]; then 1.157 + # Bring down alias interface. Its routes will disappear too. 1.158 + ifconfig $interface:0- inet 0 1.159 + fi 1.160 + ifconfig $interface inet 0 up 1.161 + 1.162 + # We need to give the kernel some time to get the interface up. 1.163 + sleep 1 1.164 + ;; 1.165 + BOUND|RENEW|REBIND|REBOOT) 1.166 + 1.167 + set_hostname 1.168 + 1.169 + if [ -n "$old_ip_address" -a -n "$alias_ip_address" -a \ 1.170 + "$alias_ip_address" != "$old_ip_address" ]; then 1.171 + # Possible new alias. Remove old alias. 1.172 + ifconfig $interface:0- inet 0 1.173 + fi 1.174 + 1.175 + if [ -n "$old_ip_address" -a \ 1.176 + "$old_ip_address" != "$new_ip_address" ]; then 1.177 + # IP address changed. Bringing down the interface will delete all routes, 1.178 + # and clear the ARP cache. 1.179 + ifconfig $interface inet 0 1.180 + 1.181 + fi 1.182 + 1.183 + if [ -z "$old_ip_address" -o "$old_ip_address" != "$new_ip_address" -o \ 1.184 + "$reason" = "BOUND" -o "$reason" = "REBOOT" ]; then 1.185 + 1.186 + ifconfig $interface inet $new_ip_address $new_subnet_arg \ 1.187 + $new_broadcast_arg $mtu_arg 1.188 + 1.189 + # point to point 1.190 + if [ "$new_subnet_mask" == "255.255.255.255" ]; then 1.191 + for router in $new_routers; do 1.192 + route add -host $router dev $interface 1.193 + done 1.194 + fi 1.195 + 1.196 + for router in $new_routers; do 1.197 + route add default dev $interface gw $router $metric_arg 1.198 + done 1.199 + fi 1.200 + 1.201 + if [ "$new_ip_address" != "$alias_ip_address" -a -n "$alias_ip_address" ]; 1.202 + then 1.203 + ifconfig $interface:0- inet 0 1.204 + ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg 1.205 + route add -host $alias_ip_address $interface:0 1.206 + fi 1.207 + 1.208 + make_resolv_conf 1.209 + 1.210 + ;; 1.211 + 1.212 + EXPIRE|FAIL|RELEASE|STOP) 1.213 + if [ -n "$alias_ip_address" ]; then 1.214 + # Turn off alias interface. 1.215 + ifconfig $interface:0- inet 0 1.216 + fi 1.217 + 1.218 + if [ -n "$old_ip_address" ]; then 1.219 + # Shut down interface, which will delete routes and clear arp cache. 1.220 + ifconfig $interface inet 0 1.221 + fi 1.222 + 1.223 + if [ -n "$alias_ip_address" ]; then 1.224 + ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg 1.225 + route add -host $alias_ip_address $interface:0 1.226 + fi 1.227 + 1.228 + ;; 1.229 + 1.230 + TIMEOUT) 1.231 + if [ -n "$alias_ip_address" ]; then 1.232 + ifconfig $interface:0- inet 0 1.233 + fi 1.234 + 1.235 + ifconfig $interface inet $new_ip_address $new_subnet_arg \ 1.236 + $new_broadcast_arg $mtu_arg 1.237 + 1.238 + set -- $new_routers 1.239 + first_router="$1" 1.240 + 1.241 + if ping -q -c 1 $first_router; then 1.242 + if [ "$new_ip_address" != "$alias_ip_address" -a \ 1.243 + -n "$alias_ip_address" ]; then 1.244 + ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg 1.245 + route add -host $alias_ip_address dev $interface:0 1.246 + fi 1.247 + 1.248 + # point to point 1.249 + if [ "$new_subnet_mask" == "255.255.255.255" ]; then 1.250 + for router in $new_routers; do 1.251 + route add -host $router dev $interface 1.252 + done 1.253 + fi 1.254 + 1.255 + for router in $new_routers; do 1.256 + route add default dev $interface gw $router $metric_arg 1.257 + done 1.258 + 1.259 + make_resolv_conf 1.260 + else 1.261 + # Changed from 'ifconfig $interface inet 0 down' - see Debian bug #144666 1.262 + ifconfig $interface inet 0 1.263 + exit_with_hooks 2 "$@" 1.264 + fi 1.265 + 1.266 + ;; 1.267 +esac 1.268 + 1.269 +exit_with_hooks 0