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Directory : /etc/sysconfig/network-scripts/
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Server : Apache System : Linux server1.cgrithy.com 3.10.0-1160.95.1.el7.x86_64 #1 SMP Mon Jul 24 13:59:37 UTC 2023 x86_64 User : nobody ( 99) PHP Version : 8.1.23 Disable Function : NONE Directory : /etc/sysconfig/network-scripts/ |
#!/bin/bash
# Network Interface Configuration System
# Copyright (c) 1996-2014 Red Hat, Inc. all rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2,
# as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
. /etc/init.d/functions
cd /etc/sysconfig/network-scripts
. ./network-functions
[ -f ../network ] && . ../network
CONFIG=${1}
need_config "${CONFIG}"
source_config
if [ "${BOOTPROTO}" = "bootp" -o "${BOOTPROTO}" = "dhcp" ]; then
DYNCONFIG=true
fi
# load the module associated with that device
# /sbin/modprobe ${REALDEVICE}
is_available ${REALDEVICE}
# bail out, if the MAC does not fit
if [ -n "${HWADDR}" ]; then
FOUNDMACADDR=$(get_hwaddr ${REALDEVICE})
if [ "${FOUNDMACADDR}" != "${HWADDR}" -a "${FOUNDMACADDR}" != "${MACADDR}" ]; then
net_log $"Device ${DEVICE} has different MAC address than expected, ignoring."
exit 1
fi
fi
# If the device is a bridge, create it with brctl, if available.
if [ "${TYPE}" = "Bridge" ]; then
if [ ! -x /usr/sbin/brctl ]; then
net_log $"Bridge support not available: brctl not found"
exit 1
fi
if [ ! -d /sys/class/net/${DEVICE}/bridge ]; then
/usr/sbin/brctl addbr -- ${DEVICE} || exit 1
fi
[ -n "${DELAY}" ] && /usr/sbin/brctl setfd -- ${DEVICE} ${DELAY}
[ -n "${STP}" ] && /usr/sbin/brctl stp -- ${DEVICE} ${STP}
[ -n "${PRIO}" ] && /usr/sbin/brctl setbridgeprio ${DEVICE} ${PRIO}
[ -n "${AGEING}" ] && /usr/sbin/brctl setageing ${DEVICE} ${AGEING}
# add the bits to setup driver parameters here
for arg in $BRIDGING_OPTS ; do
key=${arg%%=*};
value=${arg##*=};
if [ "${key}" != "multicast_router" -a "${key}" != "hash_max" -a "${key}" != "multicast_snooping" ]; then
echo $value > /sys/class/net/${DEVICE}/bridge/$key
fi
done
# set LINKDELAY (used as timeout when calling check_link_down())
# to at least (${DELAY} * 2) + 7 if STP is enabled. This is the
# minimum time required for /sys/class/net/$REALDEVICE/carrier to
# become 1 after "ip link set dev $DEVICE up" is called.
if is_true "${STP}"; then
if [ -n "${DELAY}" ]; then
forward_delay="${DELAY}"
else
# If the ${DELAY} value is not set by the user, then we need to obtain
# the forward_delay value from kernel first, and convert it to seconds.
# Otherwise STP might not correctly complete the startup before trying
# to obtain an IP address from DHCP.
forward_delay="$(cat /sys/devices/virtual/net/${DEVICE}/bridge/forward_delay)"
forward_delay="$(convert2sec ${forward_delay} centi)"
fi
forward_delay=$(bc -q <<< "${forward_delay} * 2 + 7")
# It's possible we are comparing floating point numbers here, therefore
# we are using 'bc' for comparison. The [ ] and [[ ]] do not work.
(( $(bc -l <<< "${LINKDELAY:-0} < ${forward_delay}") )) && LINKDELAY=${forward_delay}
unset forward_delay
fi
fi
# Create tap device.
if [ "${TYPE}" = "Tap" ]; then
[ -n "${OWNER}" ] && OWNER="user ${OWNER}"
TUNMODE="mode tap"
[[ ${DEVICE} == tun* ]] && TUNMODE="mode tun"
ip tuntap add ${TUNMODE} ${OWNER} dev ${DEVICE} > /dev/null
fi
# Team master initialization.
if [ -n "${TEAM_CONFIG}" ] && [ ! "${DEVICETYPE}" = "Team" ] && [ -x ./ifup-Team ]; then
./ifup-Team ${CONFIG} $2
fi
if [ -z "${REALDEVICE}" ]; then
net_log $"Device name does not seem to be present."
exit 1
fi
# now check the real state
is_available_wait ${REALDEVICE} ${DEVTIMEOUT} || {
if [ -n "$alias" ]; then
net_log $"$alias device ${DEVICE} does not seem to be present, delaying initialization."
else
net_log $"Device ${DEVICE} does not seem to be present, delaying initialization."
fi
exit 1
}
# this isn't the same as the MAC in the configuration filename. It is
# available as a configuration option in the config file, forcing the kernel
# to think an ethernet card has a different MAC address than it really has.
if [ -n "${MACADDR}" ]; then
ip link set dev ${DEVICE} address ${MACADDR}
fi
if [ -n "${MTU}" ]; then
ip link set dev ${DEVICE} mtu ${MTU}
fi
# is the device wireless? If so, configure wireless device specifics
is_wireless_device ${DEVICE} && . ./ifup-wireless
# Team slave device?
if [ -n "${TEAM_MASTER}" ] && [ ! "${DEVICETYPE}" = "TeamPort" ] && [ -x ./ifup-TeamPort ]; then
./ifup-TeamPort ${CONFIG} $2
ethtool_set
exit 0
fi
# slave device?
if [ "${SLAVE}" = yes -a "${ISALIAS}" = no -a "${MASTER}" != "" ]; then
install_bonding_driver ${MASTER}
grep -wq "${DEVICE}" /sys/class/net/${MASTER}/bonding/slaves 2>/dev/null || {
/sbin/ip link set dev ${DEVICE} down
echo "+${DEVICE}" > /sys/class/net/${MASTER}/bonding/slaves 2>/dev/null
}
ethtool_set
exit 0
fi
# Bonding initialization. For DHCP, we need to enslave the devices early,
# so it can actually get an IP.
if [ "$ISALIAS" = no ] && is_bonding_device ${DEVICE} ; then
install_bonding_driver ${DEVICE}
/sbin/ip link set dev ${DEVICE} up
for device in $(LANG=C grep -l "^[[:space:]]*MASTER=['\"]\?${DEVICE}['\"]\?\([[:space:]#]\|$\)" /etc/sysconfig/network-scripts/ifcfg-*) ; do
is_ignored_file "$device" && continue
/sbin/ifup ${device##*/} || net_log "Unable to start slave device ${device##*/} for master ${DEVICE}." warning
done
[ -n "${LINKDELAY}" ] && /bin/sleep ${LINKDELAY}
# add the bits to setup the needed post enslavement parameters
for arg in $BONDING_OPTS ; do
key=${arg%%=*};
value=${arg##*=};
if [ "${key}" = "primary" ]; then
echo $value > /sys/class/net/${DEVICE}/bonding/$key
fi
done
fi
# If the device is part of a bridge, add the device to the bridge
if [ -n "${BRIDGE}" ] && [ -x /usr/sbin/brctl ]; then
if [ ! -d /sys/class/net/${BRIDGE}/bridge ]; then
/usr/sbin/brctl addbr -- ${BRIDGE} 2>/dev/null
fi
/sbin/ip addr flush dev ${DEVICE} 2>/dev/null
/sbin/ip link set dev ${DEVICE} up
ethtool_set
[ -n "${LINKDELAY}" ] && /bin/sleep ${LINKDELAY}
/usr/sbin/brctl addif -- ${BRIDGE} ${DEVICE}
# add the bits to setup driver parameters here
for arg in $BRIDGING_OPTS ; do
key=${arg%%=*};
value=${arg##*=};
echo $value > /sys/class/net/${DEVICE}/brport/$key
done
# Upon adding a device to a bridge,
# it's necessary to make radvd reload its config
[ -r /var/run/radvd/radvd.pid ] && kill -HUP $(cat /var/run/radvd/radvd.pid)
exit 0
fi
if [ -n "${DYNCONFIG}" ] && [ -x /sbin/dhclient ]; then
if is_true "${PERSISTENT_DHCLIENT}"; then
ONESHOT="";
else
ONESHOT="-1";
fi;
generate_config_file_name
generate_lease_file_name
# Initialize the dhclient args and obtain the hostname options if needed:
DHCLIENTARGS="${DHCLIENTARGS} ${ONESHOT} -q ${DHCLIENTCONF} -lf ${LEASEFILE} -pf /var/run/dhclient-${DEVICE}.pid"
set_hostname_options DHCLIENTARGS
echo
echo -n $"Determining IP information for ${DEVICE}..."
if ! is_true "${PERSISTENT_DHCLIENT}" && check_link_down ${DEVICE}; then
echo $" failed; no link present. Check cable?"
exit 1
fi
ethtool_set
if /sbin/dhclient ${DHCLIENTARGS} ${DEVICE} ; then
echo $" done."
dhcpipv4="good"
else
echo $" failed."
if is_true "${IPV4_FAILURE_FATAL}"; then
exit 1
fi
if is_false "$IPV6INIT" || ! is_true "$DHCPV6C"; then
exit 1
fi
net_log "Unable to obtain IPv4 DHCP address ${DEVICE}." warning
fi
# end dynamic device configuration
else
if [ -z "${IPADDR}" -a -z "${IPADDR0}" -a -z "${IPADDR1}" -a -z "${IPADDR2}" ]; then
# enable device without IP, useful for e.g. PPPoE
ip link set dev ${REALDEVICE} up
ethtool_set
[ -n "${LINKDELAY}" ] && /bin/sleep ${LINKDELAY}
else
expand_config
[ -n "${ARP}" ] && \
ip link set dev ${REALDEVICE} $(toggle_value arp $ARP)
if ! ip link set dev ${REALDEVICE} up ; then
net_log $"Failed to bring up ${DEVICE}."
exit 1
fi
ethtool_set
[ -n "${LINKDELAY}" ] && /bin/sleep ${LINKDELAY}
if [ "${DEVICE}" = "lo" ]; then
SCOPE="scope host"
else
SCOPE=${SCOPE:-}
fi
if [ -n "$SRCADDR" ]; then
SRC="src $SRCADDR"
else
SRC=
fi
# set IP address(es)
for idx in {0..256} ; do
if [ -z "${ipaddr[$idx]}" ]; then
break
fi
if ! LC_ALL=C ip addr ls ${REALDEVICE} | LC_ALL=C grep -q "${ipaddr[$idx]}/${prefix[$idx]}" ; then
if [ "${REALDEVICE}" != "lo" ] && [ "${arpcheck[$idx]}" != "no" ] ; then
ARPING=$(/sbin/arping -c 2 -w ${ARPING_WAIT:-3} -D -I ${REALDEVICE} ${ipaddr[$idx]})
if [ $? = 1 ]; then
ARPINGMAC=$(echo $ARPING | sed -ne 's/.*\[\(.*\)\].*/\1/p')
net_log $"Error, some other host ($ARPINGMAC) already uses address ${ipaddr[$idx]}."
exit 1
fi
fi
if ! ip addr add ${ipaddr[$idx]}/${prefix[$idx]} \
brd ${broadcast[$idx]:-+} dev ${REALDEVICE} ${SCOPE} label ${DEVICE}; then
net_log $"Error adding address ${ipaddr[$idx]} for ${DEVICE}."
fi
fi
if [ -n "$SRCADDR" ]; then
sysctl -w "net.ipv4.conf.${SYSCTLDEVICE}.arp_filter=1" >/dev/null 2>&1
fi
# update ARP cache of neighboring computers
if ! is_false "${arpupdate[$idx]}" && [ "${REALDEVICE}" != "lo" ]; then
/sbin/arping -q -A -c 1 -I ${REALDEVICE} ${ipaddr[$idx]}
( sleep 2;
/sbin/arping -q -U -c 1 -I ${REALDEVICE} ${ipaddr[$idx]} ) > /dev/null 2>&1 < /dev/null &
fi
# set lifetime of address to forever
ip addr change ${ipaddr[$idx]}/${prefix[$idx]} dev ${REALDEVICE} valid_lft forever preferred_lft forever
done
# Set a default route.
if [ "${DEFROUTE}" != "no" ] && [ -z "${GATEWAYDEV}" -o "${GATEWAYDEV}" = "${REALDEVICE}" ]; then
# set up default gateway. replace if one already exists
if [ -n "${GATEWAY}" ] && [ "$(ipcalc --network ${GATEWAY} ${netmask[0]} 2>/dev/null)" = "NETWORK=${NETWORK}" ]; then
ip route replace default ${METRIC:+metric $METRIC} \
${EXTRA_ROUTE_OPTS} \
via ${GATEWAY} ${WINDOW:+window $WINDOW} ${SRC} \
${GATEWAYDEV:+dev $GATEWAYDEV} ||
net_log $"Error adding default gateway ${GATEWAY} for ${DEVICE}."
elif [ "${GATEWAYDEV}" = "${DEVICE}" ]; then
ip route replace default ${METRIC:+metric $METRIC} \
${EXTRA_ROUTE_OPTS} \
${SRC} ${WINDOW:+window $WINDOW} dev ${REALDEVICE} ||
net_log $"Error adding default gateway for ${REALDEVICE}."
fi
fi
fi
fi
# Add Zeroconf route.
if [ -z "${NOZEROCONF}" -a "${ISALIAS}" = "no" -a "${REALDEVICE}" != "lo" ]; then
ip route add 169.254.0.0/16 dev ${REALDEVICE} metric $((1000 + $(cat /sys/class/net/${REALDEVICE}/ifindex))) scope link
fi
if [ "${TYPE}" = "Bridge" ]; then
for arg in $BRIDGING_OPTS ; do
key=${arg%%=*};
value=${arg##*=};
if [ "${key}" = "multicast_router" -o "${key}" = "hash_max" -o "${key}" = "multicast_snooping" ]; then
echo $value > /sys/class/net/${DEVICE}/bridge/$key
fi
done
fi
# IPv6 initialisation?
/etc/sysconfig/network-scripts/ifup-ipv6 ${CONFIG}
if is_true "${DHCPV6C}" && [ -x /sbin/dhclient ]; then
# Assign interface into a firewalld zone so we can
# obtain the IPv6 via DHCPv6 (empty ZONE means default):
if [ "${REALDEVICE}" != "lo" ]; then
dbus-send --print-reply --system --dest=org.fedoraproject.FirewallD1 \
/org/fedoraproject/FirewallD1 \
org.fedoraproject.FirewallD1.zone.changeZoneOfInterface \
string:"${ZONE}" string:"${DEVICE}" \
> /dev/null 2>&1
fi
generate_config_file_name 6
generate_lease_file_name 6
echo
echo -n $"Determining IPv6 information for ${DEVICE}..."
# Initialize the dhclient args for IPv6 and obtain the hostname options if needed:
DHCLIENTARGS="-6 -1 ${DHCPV6C_OPTIONS} ${DHCLIENTCONF} -lf ${LEASEFILE} -pf /var/run/dhclient6-${DEVICE}.pid ${DEVICE}"
set_hostname_options DHCLIENTARGS
if /sbin/dhclient $DHCLIENTARGS; then
echo $" done."
else
echo $" failed."
if [ "${dhcpipv4}" = "good" -o -n "${IPADDR}" ]; then
net_log "Unable to obtain IPv6 DHCP address ${DEVICE}." warning
else
exit 1
fi
fi
fi
exec /etc/sysconfig/network-scripts/ifup-post ${CONFIG} ${2}