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author | Ted Lemon <source@isc.org> | 1999-02-14 18:38:05 +0000 |
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committer | Ted Lemon <source@isc.org> | 1999-02-14 18:38:05 +0000 |
commit | 26304776c685ab729bd8d16a8edb2c0a33a4a91c (patch) | |
tree | 6ee14b72eb2e0b65db806a7f5ef0fb11cf10034b /client/scripts | |
parent | 62d0cb477b17095ead45d943efa5cc5417141888 (diff) | |
download | isc-dhcp-26304776c685ab729bd8d16a8edb2c0a33a4a91c.tar.gz |
Support Linux 2.1 and later
Diffstat (limited to 'client/scripts')
-rwxr-xr-x | client/scripts/linux | 72 |
1 files changed, 57 insertions, 15 deletions
diff --git a/client/scripts/linux b/client/scripts/linux index 57f8d1c5..a956bccf 100755 --- a/client/scripts/linux +++ b/client/scripts/linux @@ -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 |