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|
#!/bin/sh
make_resolv_conf() {
if [ x"$new_domain_name_servers" != x ]; then
cat /dev/null > /etc/resolv.conf.dhclient
if [ x"$new_domain_search" != x ]; then
echo search $new_domain_search >> /etc/resolv.conf.dhclient
elif [ x"$new_domain_name" != x ]; then
# Note that the DHCP 'Domain Name Option' is really just a domain
# name, and that this practice of using the domain name option as
# a search path is both nonstandard and deprecated.
echo search $new_domain_name >> /etc/resolv.conf.dhclient
fi
for nameserver in $new_domain_name_servers; do
echo nameserver $nameserver >>/etc/resolv.conf.dhclient
done
mv /etc/resolv.conf.dhclient /etc/resolv.conf
fi
}
# Must be used on exit. Invokes the local dhcp client exit hooks, if any.
exit_with_hooks() {
exit_status=$1
if [ -f /etc/dhclient-exit-hooks ]; then
. /etc/dhclient-exit-hooks
fi
# probably should do something with exit status of the local script
exit $exit_status
}
# Invoke the local dhcp client enter hooks, if they exist.
if [ -f /etc/dhclient-enter-hooks ]; then
exit_status=0
. /etc/dhclient-enter-hooks
# allow the local script to abort processing of this state
# local script must set exit_status variable to nonzero.
if [ $exit_status -ne 0 ]; then
exit $exit_status
fi
fi
if [ x$new_broadcast_address != x ]; then
new_broadcast_arg="broadcast $new_broadcast_address"
fi
if [ x$old_broadcast_address != x ]; then
old_broadcast_arg="broadcast $old_broadcast_address"
fi
if [ x$new_subnet_mask != x ]; then
new_netmask_arg="netmask $new_subnet_mask"
fi
if [ x$old_subnet_mask != x ]; then
old_netmask_arg="netmask $old_subnet_mask"
fi
if [ x$alias_subnet_mask != x ]; then
alias_subnet_arg="netmask $alias_subnet_mask"
fi
if [ x$new_interface_mtu != x ]; then
mtu_arg="mtu $new_interface_mtu"
fi
if [ x$IF_METRIC != x ]; then
metric_arg="metric $IF_METRIC"
fi
ifconfig=/sbin/ifconfig
release=`uname -r`
release=`expr $release : '\(.*\)\..*'`
relmajor=`echo $release |sed -e 's/^\([^\.]*\)\..*$/\1/'`
relminor=`echo $release |sed -e 's/^.*\.\([^\.]*\)$/\1/'`
if [ x$reason = xMEDIUM ]; then
eval "$ifconfig $interface $medium"
$ifconfig $interface
sleep 1
exit_with_hooks 0
fi
if [ x$reason = xPREINIT ]; then
if [ x$alias_ip_address != x ]; then
$ifconfig ${interface}:1 0 down > /dev/null 2>&1
route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1
fi
if [ $relmajor -gt 5 ] || ( [ $relmajor -eq 5 ] && [ $relminor -ge 5 ] )
then
# Turn the interface on
$ifconfig $interface plumb
$ifconfig $interface up
else
$ifconfig $interface inet 0.0.0.0 netmask 0.0.0.0 \
broadcast 255.255.255.255 up
fi
exit_with_hooks 0
fi
if [ x$reason = xARPCHECK ] || [ x$reason = xARPSEND ]; then
exit_with_hooks 0;
fi
if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \
[ x$reason = xREBIND ] || [ x$reason = xREBOOT ]; then
current_hostname=`hostname`
if [ x$current_hostname = x ] || \
[ x$current_hostname = x$old_host_name ]; then
if [ x$current_hostname = x ] || \
[ x$new_host_name != x$old_host_name ]; then
hostname $new_host_name
fi
fi
if [ x$old_ip_address != x ] && [ x$alias_ip_address != x ] && \
[ x$alias_ip_address != x$old_ip_address ]; then
$ifconfig ${interface}:1 inet 0 down > /dev/null 2>&1
route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1
fi
if [ x$old_ip_address != x ] && [ x$old_ip_address != x$new_ip_address ]; then
$ifconfig ${interface} inet 0 down
route delete $old_ip_address 127.1 >/dev/null 2>&1
for router in $old_routers; do
route delete default $router >/dev/null 2>&1
done
fi
if [ x$old_ip_address = x ] || [ x$old_ip_address != x$new_ip_address ] || \
[ x$reason = xBOUND ] || [ x$reason = xREBOOT ]; then
eval "$ifconfig $interface inet $new_ip_address $new_netmask_arg \
$new_broadcast_arg $mtu_arg $metric_arg $medium"
route add $new_ip_address 127.1 1 >/dev/null 2>&1
for router in $new_routers; do
route add default $router 1 >/dev/null 2>&1
done
else
# we haven't changed the address, have we changed other options
# that we wish to update?
if [ x$new_routers != x ] && [ x$new_routers != x$old_routers ] ; then
# if we've changed routers delete the old and add the new.
$LOGGER "New Routers: $new_routers"
for router in $old_routers; do
route delete default $router >/dev/null 2>&1
done
for router in $new_routers; do
route add default $router 1 >/dev/null 2>&1
done
fi
fi
if [ x$new_ip_address != x$alias_ip_address ] && [ x$alias_ip_address != x ];
then
$ifconfig ${interface}:1 inet $alias_ip_address $alias_subnet_arg
route add $alias_ip_address 127.0.0.1 1
fi
make_resolv_conf
exit_with_hooks 0
fi
if [ x$reason = xEXPIRE ] || [ x$reason = xFAIL ] || [ x$reason = xRELEASE ] \
|| [ x$reason = xSTOP ]; then
if [ x$alias_ip_address != x ]; then
$ifconfig ${interface}:1 0 down > /dev/null 2>&1
route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1
fi
if [ x$old_ip_address != x ]; then
$ifconfig $interface inet 0 down
route delete $old_ip_address 127.1 >/dev/null 2>&1
for router in $old_routers; do
route delete default $router >/dev/null 2>&1
done
fi
if [ x$alias_ip_address != x ]; then
$ifconfig ${interface}:1 inet $alias_ip_address $alias_subnet_arg
route add $alias_ip_address 127.0.0.1 1
fi
exit_with_hooks 0
fi
if [ x$reason = xTIMEOUT ]; then
if [ x$alias_ip_address != x ]; then
$ifconfig ${interface}:1 0 down > /dev/null 2>&1
route delete $alias_ip_address 127.0.0.1 > /dev/null 2>&1
fi
eval "$ifconfig $interface inet $new_ip_address $new_netmask_arg \
$new_broadcast_arg $mtu_arg $metric_arg $medium"
sleep 1
set $new_routers
if ping -s -n -I 1 $1 64 1; then
if [ x$new_ip_address != x$alias_ip_address ] && \
[ x$alias_ip_address != x ]; then
$ifconfig ${interface}:1 inet $alias_ip_address $alias_subnet_arg
route add $alias_ip_address 127.0.0.1 1
fi
route add $new_ip_address 127.1 1 >/dev/null 2>&1
for router in $new_routers; do
route add default $router 1 >/dev/null 2>&1
done
make_resolv_conf
exit_with_hooks 0
fi
$ifconfig $interface inet 0 down
for router in $old_routers; do
route delete default $router >/dev/null 2>&1
done
exit_with_hooks 1
fi
exit_with_hooks 0
|
