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Support Linux 2.1 and later

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This commit is contained in:
Ted Lemon 1999-02-14 18:38:05 +00:00
parent 62d0cb477b
commit 26304776c6
1 changed files with 57 additions and 15 deletions
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72
client/scripts/linux
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@ -1,5 +1,6 @@
#!/bin/sh
# dhclient-script for Linux. Dan Halbert, March, 1997.
# Updated for Linux 2.[12] by Brian J. Murrell, January 1999.
# No guarantees about this. I'm a novice at the details of Linux
# networking.
@ -21,6 +22,32 @@
# 4. TIMEOUT not tested. ping has a flag I don't know, and I'm suspicious
# of the $1 in its args.
# Must be used on exit. Invokes the local dhcp client exit hooks, if any.
function exit_with_hooks() {
exit_status=$1
if [ -x /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 [ -x /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
release=`uname -r`
release=`expr $release : '\(.*\)\..*'`
relmajor=`echo $release |sed -e 's/^\([^\.]*\)\..*$/\1/'`
relminor=`echo $release |sed -e 's/^.*\.\([^\.]*\)$/\1/'`
if [ x$new_broadcast_address != x ]; then
new_broadcast_arg="broadcast $new_broadcast_address"
fi
@ -39,7 +66,7 @@ fi
if [ x$reason = xMEDIUM ]; then
# Linux doesn't do mediums (ok, ok, media).
exit 0
exit_with_hooks 0
fi
if [ x$reason = xPREINIT ]; then
@ -47,15 +74,24 @@ if [ x$reason = xPREINIT ]; then
# Bring down alias interface. Its routes will disappear too.
ifconfig $interface:0- inet 0
fi
ifconfig $interface inet 0.0.0.0 netmask 0.0.0.0 \
if [ $relmajor -lt 2 ] || ( [ $relmajor -eq 2 ] && [ $relminor -eq 0 ] )
then
ifconfig $interface inet 0.0.0.0 netmask 0.0.0.0 \
broadcast 255.255.255.255 up
# Add route to make broadcast work. Do not omit netmask.
route add default dev $interface netmask 0.0.0.0
exit 0
# Add route to make broadcast work. Do not omit netmask.
route add default dev $interface netmask 0.0.0.0
else
ifconfig $interface up
fi
# We need to give the kernel some time to get the interface up.
sleep 1
exit_with_hooks 0
fi
if [ x$reason = xARPCHECK ] || [ x$reason = xARPSEND ]; then
exit 0;
exit_with_hooks 0
fi
if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \
@ -75,9 +111,12 @@ if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \
[ x$reason = xBOUND ] || [ x$reason = xREBOOT ]; then
ifconfig $interface inet $new_ip_address $new_subnet_arg \
$new_broadcast_arg
$new_broadcast_arg
# Add a network route to the computed network address.
route add -net $new_network_number $new_subnet_arg dev $interface
if [ $relmajor -lt 2 ] || \
( [ $relmajor -eq 2 ] && [ $relminor -eq 0 ] ); then
route add -net $new_network_number $new_subnet_arg dev $interface
fi
for router in $new_routers; do
route add default gw $router
done
@ -92,7 +131,7 @@ if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \
for nameserver in $new_domain_name_servers; do
echo nameserver $nameserver >>/etc/resolv.conf
done
exit 0
exit_with_hooks 0
fi
if [ x$reason = xEXPIRE ] || [ x$reason = xFAIL ]; then
@ -108,7 +147,7 @@ if [ x$reason = xEXPIRE ] || [ x$reason = xFAIL ]; then
ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg
route add -host $alias_ip_address $interface:0
fi
exit 0
exit_with_hooks 0
fi
if [ x$reason = xTIMEOUT ]; then
@ -119,13 +158,16 @@ if [ x$reason = xTIMEOUT ]; then
$new_broadcast_arg
set $new_routers
############## what is -w in ping?
if ping -q -c 1 -w 1 $1; then
if ping -q -c 1 $1; then
if [ x$new_ip_address != x$alias_ip_address ] && \
[ x$alias_ip_address != x ]; then
ifconfig $interface:0 inet $alias_ip_address $alias_subnet_arg
route add -host $alias_ip_address dev $interface:0
fi
route add -net $new_network_number
if [ $relmajor -lt 2 ] || \
( [ $relmajor -eq 2 ] && [ $relminor -eq 0 ] ); then
route add -net $new_network_number
fi
for router in $new_routers; do
route add default gw $router
done
@ -137,10 +179,10 @@ if [ x$reason = xTIMEOUT ]; then
rm -f /etc/resolv.conf
ln /etc/resolv.conf.std /etc/resolv.conf
fi
exit 0
exit_with_hooks 0
fi
ifconfig $interface inet down
exit 1
exit_with_hooks 1
fi
exit 0
exit_with_hooks 0