source: projects/initscripts/tags/initscripts-8.91.3/rc.d/init.d/network @ 1108

#! /bin/bash
#
# network       Bring up/down networking
#
# chkconfig: - 10 90
# description: Activates/Deactivates all network interfaces configured to \
#              start at boot time.
#
### BEGIN INIT INFO
# Provides: $network
# Should-Start: iptables ip6tables
### END INIT INFO

# 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=

# Even if VLAN is configured, without the utility we can't do much
[ ! -x /sbin/vconfig ] && VLAN=

CWD=`pwd`
cd /etc/sysconfig/network-scripts

. ./network-functions

# find all the interfaces besides loopback.
# ignore aliases, alternative configurations, and editor backup files
interfaces=$(ls ifcfg* | \
            LANG=C sed -e "$__sed_discard_ignored_files" \
                       -e '/\(ifcfg-lo\|:\|ifcfg-.*-range\)/d' \
                       -e '/ifcfg-[A-Za-z0-9\._-]\+$/ { s/^ifcfg-//g;s/[0-9]/ &/}' | \
            LANG=C sort -k 1,1 -k 2n | \
            LANG=C sed 's/ //')

# See how we were called.
case "$1" in
  start)
        # IPv6 hook (pre IPv4 start)
        if [ -x /etc/sysconfig/network-scripts/init.ipv6-global ]; then
                /etc/sysconfig/network-scripts/init.ipv6-global start pre
        fi
  
        sysctl -e -p /etc/sysctl.conf >/dev/null 2>&1

        # 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

        case "$VLAN" in
          yes)
            if [ -d /proc/net/vlan ] || modprobe 8021q >/dev/null 2>&1 ; then
                test -z "$VLAN_NAME_TYPE" && VLAN_NAME_TYPE=DEV_PLUS_VID_NO_PAD
                action $"Setting 802.1Q VLAN parameters: " /sbin/vconfig set_name_type "$VLAN_NAME_TYPE"
            else
                echo $"No 802.1Q VLAN support available in kernel."
            fi
            ;;
        esac

        vlaninterfaces=""
        cipeinterfaces=""
        xdslinterfaces=""
        bridgeinterfaces=""

        # bring up all other interfaces configured to come up at boot time
        for i in $interfaces; do
                unset DEVICE TYPE SLAVE
                eval $(LANG=C fgrep "DEVICE=" ifcfg-$i)
                eval $(LANG=C fgrep "TYPE=" ifcfg-$i)
                eval $(LANG=C fgrep "SLAVE=" ifcfg-$i)

                if [ -z "$DEVICE" ] ; then DEVICE="$i"; fi

                if [ "${DEVICE##cipcb}" != "$DEVICE" ] ; then
                        cipeinterfaces="$cipeinterfaces $i"
                        continue
                fi
                if [ "$TYPE" = "xDSL" ]; then
                        xdslinterfaces="$xdslinterfaces $i"
                        continue
                fi

                if [ "$TYPE" = "Bridge" ]; then
                        bridgeinterfaces="$bridgeinterfaces $i"
                        continue
                fi

                if [ "${DEVICE%%.*}" != "$DEVICE"  -o  "${DEVICE##vlan}" != "$DEVICE" ] ; then
                        vlaninterfaces="$vlaninterfaces $i"
                        continue
                fi
                
                if [ "$SLAVE" = "yes" ]; then
                        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.
                if [ -f /var/run/confirm ]; then
                        confirm $i
                        test $? = 1 && continue
                fi
                action $"Bringing up interface $i: " ./ifup $i boot
        done
        
        # Bring up xDSL and CIPE interfaces
        for i in $vlaninterfaces $bridgeinterfaces $xdslinterfaces $cipeinterfaces ; do 
            if ! LANG=C egrep -L "^ONBOOT=['\"]?[Nn][Oo]['\"]?" ifcfg-$i >/dev/null 2>&1 ; then
                # If we're in confirmation mode, get user confirmation.
                if [ -f /var/run/confirm ]; then
                        confirm $i
                        test $? = 1 && continue
                fi
                action $"Bringing up interface $i: " ./ifup $i boot
            fi
        done

        # 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 [ -x /etc/sysconfig/network-scripts/init.ipv6-global ]; then
                /etc/sysconfig/network-scripts/init.ipv6-global start post
        fi
        # Run this again to catch any interface-specific actions
        sysctl -e -p /etc/sysctl.conf >/dev/null 2>&1
 
        touch /var/lock/subsys/network

        [ -n "${NETWORKDELAY}" ] && /bin/sleep ${NETWORKDELAY}
        ;;
  stop)
        # Don't shut the network down if root is on NFS or a network
        # block device.
        rootfs=$(awk '{ if ($1 !~ /^[ \t]*#/ && $2 == "/") { print $3; }}' /etc/mtab)
        rootopts=$(awk '{ if ($1 !~ /^[ \t]*#/ && $2 == "/") { print $4; }}' /etc/mtab)
        
        if [[ "$rootfs" =~ ^nfs ]] || [[ "$rootopts" =~ "_netdev|_rnetdev" ]] ; then
                exit 1
        fi
  
        # 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=`LC_ALL=C awk '$3  ~ /^nfs/ { print $2 }' /proc/mounts`
                SMBMTAB=`LC_ALL=C awk '$3 == "smbfs" { print $2 }' /proc/mounts`
                NCPMTAB=`LC_ALL=C awk '$3 == "ncpfs" { print $2 }' /proc/mounts`
                if [ -n "$NFSMTAB" -o -n "$SMBMTAB" -o -n "$NCPMTAB" ] ; then
                        /etc/init.d/netfs stop
                fi
        fi
        
        # IPv6 hook (pre IPv4 stop)
        if [ -x /etc/sysconfig/network-scripts/init.ipv6-global ]; then
                /etc/sysconfig/network-scripts/init.ipv6-global stop pre
        fi
 
        vlaninterfaces=""
        cipeinterfaces=""
        xdslinterfaces=""
        bridgeinterfaces=""
        remaining=""

        # get list of bonding, cipe, and xdsl interfaces
        for i in $interfaces; do
                unset DEVICE TYPE
                eval $(LANG=C fgrep "DEVICE=" ifcfg-$i)
                eval $(LANG=C fgrep "TYPE=" ifcfg-$i)

                if [ -z "$DEVICE" ] ; then DEVICE="$i"; fi

                if [ "${DEVICE##cipcb}" != "$DEVICE" ] ; then
                        cipeinterfaces="$cipeinterfaces $i"
                        continue
                fi
                if [ "$TYPE" = "Bridge" ]; then
                        bridgeinterfaces="$bridgeinterfaces $i"
                        continue
                fi
                if [ "$TYPE" = "xDSL" ]; then
                        xdslinterfaces="$xdslinterfaces $i"
                        continue
                fi

                if [ "${DEVICE%%.*}" != "$DEVICE"  -o  "${DEVICE##vlan}" != "$DEVICE" ] ; then
                        vlaninterfaces="$vlaninterfaces $i"
                        continue
                fi
                remaining="$remaining $i"
        done
        
        for i in $cipeinterfaces $xdslinterfaces $bridgeinterfaces $vlaninterfaces $remaining; do
                (. ifcfg-$i
                if [ -z "$DEVICE" ] ; then DEVICE="$i"; fi

                if ! check_device_down $DEVICE; 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 [ -x /etc/sysconfig/network-scripts/init.ipv6-global ]; then
                /etc/sysconfig/network-scripts/init.ipv6-global stop post
        fi
        
        rm -f /var/lock/subsys/network
        ;;
  status)
        echo $"Configured devices:"
        echo lo $interfaces

        echo $"Currently active devices:"
        echo $(/sbin/ip -o link show up | 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