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|
#! /bin/bash
#
# network Bring up/down networking
#
# chkconfig: 2345 10 90
# description: Activates/Deactivates all network interfaces configured to \
# start at boot time.
# probe: true
# Source function library.
. /etc/init.d/functions
if [ ! -f /etc/sysconfig/network ]; then
exit 0
fi
. /etc/sysconfig/network
if [ -f /etc/sysconfig/pcmcia ]; then
. /etc/sysconfig/pcmcia
fi
# Check that networking is up.
[ "${NETWORKING}" = "no" ] && exit 0
# if the ip configuration utility isn't around we can't function.
[ -x /sbin/ip ] || exit 1
# Even if IPX is configured, without the utilities we can't do much
[ ! -x /sbin/ipx_internal_net -o ! -x /sbin/ipx_configure ] && IPX=
# If IPv6 is explicitly configured, make sure it's available.
if [ "$NETWORKING_IPV6" = "yes" ]; then
alias=`modprobe -c | awk '/^alias net-pf-10 / { print $3 }'`
if [ "$alias" != "ipv6" -a ! -f /proc/net/if_inet6 ]; then
echo "alias net-pf-10 ipv6" >> /etc/modules.conf
fi
fi
CWD=`pwd`
cd /etc/sysconfig/network-scripts
. network-functions
# find all the interfaces besides loopback.
# ignore aliases, alternative configurations, and editor backup files
interfaces=`ls ifcfg* | LANG=C egrep -v '(ifcfg-lo|:|rpmsave|rpmorig|rpmnew)' | \
LANG=C egrep -v '(~|\.bak)$' | \
LANG=C egrep 'ifcfg-[A-Za-z0-9_-]+$' | \
sed 's/^ifcfg-//g'`
# See how we were called.
case "$1" in
start)
# IPv6 hook (pre IPv4 start)
if [ "$NETWORKING_IPV6" = "yes" ]; then
if [ -x /etc/sysconfig/network-scripts/init.ipv6-global ]; then
/etc/sysconfig/network-scripts/init.ipv6-global start pre
fi
fi
action $"Setting network parameters: " sysctl -e -p /etc/sysctl.conf
# bring up loopback interface
action $"Bringing up loopback interface: " ./ifup ifcfg-lo
case "$IPX" in
yes|true)
/sbin/ipx_configure --auto_primary=$IPXAUTOPRIMARY \
--auto_interface=$IPXAUTOFRAME
if [ "$IPXINTERNALNETNUM" != "0" ]; then
/sbin/ipx_internal_net add $IPXINTERNALNETNUM $IPXINTERNALNODENUM
fi
;;
esac
oldhotplug=`sysctl kernel.hotplug 2>/dev/null | \
awk '{ print $3 }' 2>/dev/null`
sysctl -w kernel.hotplug="/bin/true" > /dev/null 2>&1
cipeinterfaces=""
# bring up all other interfaces configured to come up at boot time
for i in $interfaces; do
eval $(fgrep "DEVICE=" ifcfg-$i)
if [ -z "$DEVICE" ] ; then DEVICE="$i"; fi
if [ "${DEVICE##cipcb}" != "$DEVICE" ] ; then
cipeinterfaces="$cipeinterfaces $DEVICE"
continue
fi
if LANG=C egrep -L "^ONBOOT=\"?[Nn][Oo]\"?" ifcfg-$i > /dev/null ; then
# this loads the module, to preserve ordering
is_available $i
continue
fi
# If we're in confirmation mode, get user confirmation
[ -n "$CONFIRM" ] &&
{
confirm $i
case $? in
0)
:
;;
2)
CONFIRM=
;;
*)
continue
;;
esac
}
action $"Bringing up interface $i: " ./ifup $i boot
done
# Bring up CIPE VPN interfaces
for i in $cipeinterfaces ; do
if ! LANG=C egrep -L "^ONBOOT=\"?[Nn][Oo]\"?" ifcfg-$i >/dev/null 2>&1 ; then
# If we're in confirmation mode, get user confirmation
[ -n "$CONFIRM" ] &&
{
confirm $i
case $? in
0)
:
;;
2)
CONFIRM=
;;
*)
continue
;;
esac
}
action $"Bringing up interface $i: " ./ifup $i boot
fi
done
sysctl -w kernel.hotplug=$oldhotplug > /dev/null 2>&1
# Add non interface-specific static-routes.
if [ -f /etc/sysconfig/static-routes ]; then
grep "^any" /etc/sysconfig/static-routes | while read ignore args ; do
/sbin/route add -$args
done
fi
# IPv6 hook (post IPv4 start)
if [ "$NETWORKING_IPV6" = "yes" ]; then
if [ -x /etc/sysconfig/network-scripts/init.ipv6-global ]; then
/etc/sysconfig/network-scripts/init.ipv6-global start post
fi
fi
touch /var/lock/subsys/network
;;
stop)
# If this is a final shutdown/halt, check for network FS,
# and unmount them even if the user didn't turn on netfs
if [ "$RUNLEVEL" = "6" -o "$RUNLEVEL" = "0" -o "$RUNLEVEL" = "1" ]; then
NFSMTAB=`grep -v '^#' /proc/mounts | awk '{ if ($3 ~ /^nfs$/ ) print $2}'`
SMBMTAB=`grep -v '^#' /proc/mounts | awk '{ if ($3 ~ /^smbfs$/ ) print $2}'`
NCPMTAB=`grep -v '^#' /proc/mounts | awk '{ if ($3 ~ /^ncpfs$/ ) print $2}'`
if [ -n "$NFSMTAB" -o -n "$SMBMTAB" -o -n "$NCPMTAB" ] ; then
/etc/init.d/netfs stop
fi
fi
# IPv6 hook (pre IPv4 stop)
if [ "$NETWORKING_IPV6" = "yes" ]; then
if [ -x /etc/sysconfig/network-scripts/init.ipv6-global ]; then
/etc/sysconfig/network-scripts/init.ipv6-global stop pre
fi
fi
# shut down all interfaces (other than loopback)
for i in $interfaces ; do
eval $(fgrep "DEVICE=" ifcfg-$i)
if [ -z "$DEVICE" ] ; then DEVICE="$i"; fi
if ! check_device_down $i; then
action $"Shutting down interface $i: " ./ifdown $i boot
fi
done
case "$IPX" in
yes|true)
if [ "$IPXINTERNALNETNUM" != "0" ]; then
/sbin/ipx_internal_net del
fi
;;
esac
action $"Shutting down loopback interface: " ./ifdown ifcfg-lo
if [ -d /proc/sys/net/ipv4 ]; then
if [ -f /proc/sys/net/ipv4/ip_forward ]; then
if [ `cat /proc/sys/net/ipv4/ip_forward` != 0 ]; then
action $"Disabling IPv4 packet forwarding: " sysctl -w net.ipv4.ip_forward=0
fi
fi
if [ -f /proc/sys/net/ipv4/ip_always_defrag ]; then
if [ `cat /proc/sys/net/ipv4/ip_always_defrag` != 0 ]; then
action $"Disabling IPv4 automatic defragmentation: " sysctl -w net.ipv4.ip_always_defrag=0
fi
fi
fi
# IPv6 hook (post IPv4 stop)
if [ "$NETWORKING_IPV6" = "yes" ]; then
if [ -x /etc/sysconfig/network-scripts/init.ipv6-global ]; then
/etc/sysconfig/network-scripts/init.ipv6-global stop post
fi
fi
rm -f /var/lock/subsys/network
;;
status)
echo $"Configured devices:"
echo lo $interfaces
echo $"Currently active devices:"
echo `/sbin/ip -o link show | awk -F ": " '{ print $2 }'`
;;
restart|reload)
cd $CWD
$0 stop
$0 start
;;
*)
echo $"Usage: $0 {start|stop|restart|reload|status}"
exit 1
esac
exit 0
|
