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|
#! /bin/bash
#
### BEGIN INIT INFO
# Provides: $network $named
# Should-Start: portreserve NetworkManager
# Default-Start: 2 3 4 5
# Short-Description: Wait for the hotplugged network to be up
# Description: Wait for all network interfaces started asynchronously
# at boot time.
### END INIT INFO
# Source function library.
. /etc/init.d/functions
NETWORKDELAY=20
DEFAULT_LINK_DETECTION_DELAY=2
MIN_LINK_DETECTION_DELAY=0
MAX_LINK_DETECTION_DELAY=$MIN_LINK_DETECTION_DELAY
ELAPSED_TIME=0
RESOLVCONF_FLAGFILE=/var/run/resolvconf/enable-updates
RESOLVCONF_DIR=/var/run/resolvconf/interface
# source network configuration
. /etc/sysconfig/network
# Check that networking is up.
is_false "${NETWORKING}" && exit 0
cd /etc/sysconfig/network-scripts
. network-functions
# find all the interfaces besides loopback.
# ignore aliases, alternative configurations, and editor backup files
interfaces=$(/bin/ls ifcfg* | \
LC_ALL=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]/ &/}' | \
LC_ALL=C grep -v '^ifcfg-' | \
LC_ALL=C sort -k 1,1 -k 2n | \
LC_ALL=C sed -e 's/ \([0-9]\)/\1/')
function may_have_link() {
local DEVICE=$1
local LINKDELAY=0
! check_link_down "${DEVICE}" || is_associating "${DEVICE}"
}
function is_associating() {
local DEVICE=$1
is_wireless_device "${DEVICE}" || return 1
local AP=$(iwgetid -a -r "${DEVICE}" 2>/dev/null)
[ -n "$AP" ] && [ "$AP" != "00:00:00:00:00:00" ] && [ "$AP" != "44:44:44:44:44:44" ] && [ "$AP" != "FF:FF:FF:FF:FF:FF" ]
}
function should_wait_network() {
for i in $interfaces; do
unset DEVICE TYPE BOOTPROTO MII_NOT_SUPPORTED PEERDNS DNS1 DNS2
unset REALDEVICE PARENTDEVICE NM_CONTROLLED
LINK_DETECTION_DELAY=$DEFAULT_LINK_DETECTION_DELAY
eval $(LANG=C grep -F "DEVICE=" "ifcfg-$i")
eval $(LANG=C grep -F "REALDEVICE=" "ifcfg-$i")
eval $(LANG=C grep -F "PARENTDEVICE=" "ifcfg-$i")
eval $(LANG=C grep -F "TYPE=" "ifcfg-$i")
eval $(LANG=C grep -F "BOOTPROTO=" "ifcfg-$i")
eval $(LANG=C grep -F "MII_NOT_SUPPORTED=" "ifcfg-$i")
eval $(LANG=C grep -F "LINK_DETECTION_DELAY=" "ifcfg-$i")
eval $(LANG=C grep -F "PEERDNS=" "ifcfg-$i")
eval $(LANG=C grep -F "DNS1=" "ifcfg-$i")
eval $(LANG=C grep -F "DNS2=" "ifcfg-$i")
eval $(LANG=C grep -F "NM_CONTROLLED=" "ifcfg-$i")
[ -z "$REALDEVICE" ] && [ -n "$PARENTDEVICE" ] && REALDEVICE=$PARENTDEVICE
[ -z "$REALDEVICE" ] && REALDEVICE=${DEVICE%%:*}
if [ $LINK_DETECTION_DELAY -lt $MIN_LINK_DETECTION_DELAY ]; then
LINK_DETECTION_DELAY=$MIN_LINK_DETECTION_DELAY
fi
if [ -z "$DEVICE" ] ; then DEVICE="$i"; fi
if [ "$BOOTPROTO" != "static" ] \
&& [ "$BOOTPROTO" != "dhcp" ] \
&& [ "$BOOTPROTO" != "bootp" ]; then
continue
fi
# Ignore Wifi network files created by NetworkManager
if [ "$TYPE" = "Wireless" ]; then
continue
fi
# only check interfaces using ifplug, other interfaces are
# started synchronously from the network service
if is_true "$MII_NOT_SUPPORTED"; then
continue
fi
# only check interfaces automatically launched
if LANG=C grep -q -E "^ONBOOT=['\"]?[Nn][Oo]['\"]?" "ifcfg-$i"; then
continue
fi
# ignore devices that are not present
ip -o link show "${DEVICE}" &>/dev/null || continue
! is_false "$NM_CONTROLLED" && is_nm_running && _use_nm=true
# for NM controlled just ask NetworkManager
if [ "$_use_nm" = "true" ]; then
# Ignore disabled wifi h/w
if is_nm_device_unavailable "${DEVICE}"; then
# Question: Is NM cleverer than us here? Does it do this delay
# internally and mark it as disconnected until it knows better?
# before configured delay, consider a lack of link beat
# as not ready, and unplugged thereafter
if [ $ELAPSED_TIME -lt $LINK_DETECTION_DELAY ]; then
return 0
fi
# no need to wait for unplugged devices to come up
continue
fi
is_nm_active "${DEVICE}" || return 0
# The resolvconf check below uses a single generic "NetworkManager"
# DNS file, rather than device specific ones, so fudge the device.
DEVICE=NetworkManager
else
# check link beat
if ! may_have_link ${DEVICE}; then
# before configured delay, consider a lack of link beat
# as not ready, and unplugged thereafter
if [ $ELAPSED_TIME -lt $LINK_DETECTION_DELAY ]; then
return 0
fi
# no need to wait for unplugged devices to come up
continue
fi
# check address is set
ADDR=$(ip addr show scope global "${DEVICE}" | awk '/inet/ {print $2;}')
if [ -z "$ADDR" ]; then
return 0
fi
fi
# wait for changes to be propagated by resolvconf if needed
if [ -e $RESOLVCONF_FLAGFILE ]; then
if [ "$BOOTPROTO" = "dhcp" ] && ! is_false "$PEERDNS" \
|| [ -n "$DNS1" ] || [ -n "$DNS2" ]; then
if [ ! -e $RESOLVCONF_DIR/$DEVICE ]; then
return 0
fi
if [ $RESOLVCONF_DIR/$DEVICE -nt /etc/resolv.conf ]; then
return 0
fi
fi
fi
done
# all interfaces are ready
return 1
}
case "$1" in
start)
gprintf "Waiting for network to be up"
for i in $interfaces; do
LINK_DETECTION_DELAY=$DEFAULT_LINK_DETECTION_DELAY
eval $(LANG=C grep -F "LINK_DETECTION_DELAY=" "ifcfg-$i")
if [ "$LINK_DETECTION_DELAY" -gt $MAX_LINK_DETECTION_DELAY ]; then
MAX_LINK_DETECTION_DELAY=$LINK_DETECTION_DELAY
fi
done
NETWORKDELAY=$(( NETWORKDELAY + MAX_LINK_DETECTION_DELAY ))
while should_wait_network && [ $ELAPSED_TIME -lt $NETWORKDELAY ]; do
sleep 1
let ELAPSED_TIME=$ELAPSED_TIME+1
done
[ $ELAPSED_TIME -ge $NETWORKDELAY ] && failure || success
echo
;;
stop)
;;
*)
gprintf "Usage: %s\n" "$(basename "$0") {start|stop}"
exit 1
esac
exit 0
|
