# -*-Shell-script-*-
#
# This file is not a stand-alone shell script; it provides functions
# to network scripts that source it.
# Set up a default search path.
PATH="/sbin:/usr/sbin:/bin:/usr/bin"
export PATH
[ -z "$__sed_discard_ignored_files" ] && . /etc/init.d/functions
RESOLVCONF_FLAGFILE=/var/run/resolvconf/enable-updates
get_hwaddr ()
{
if [ -f /sys/class/net/${1}/address ]; then
awk '{ print toupper($0) }' < /sys/class/net/${1}/address
elif [ -d "/sys/class/net/${1}" ]; then
LC_ALL= LANG= ip -o link show ${1} 2>/dev/null | \
awk '{ print toupper(gensub(/.*link\/[^ ]* ([[:alnum:]:]*).*/,
"\\1", 1)); }'
fi
}
get_config_by_hwaddr ()
{
LANG=C grep -il "^[[:space:]]*HWADDR=${1}\([[:space:]#]\|$\)" /etc/sysconfig/network-scripts/ifcfg-* \
| LC_ALL=C sed -e "$__sed_discard_ignored_files"
}
get_config_by_subchannel ()
{
LANG=C grep -il "^[[:space:]]*SUBCHANNELS=${1}\([[:space:]#]\|$\|,\)" /etc/sysconfig/network-scripts/ifcfg-* \
| LC_ALL=C sed -e "$__sed_discard_ignored_files"
}
get_device_by_hwaddr ()
{
LANG=C ip -o link | grep -v link/ieee802.11 | awk -F ': ' -vIGNORECASE=1 "/$1/ { print \$2 }"
}
need_config ()
{
local nconfig
CONFIG="ifcfg-${1}"
[ -f "${CONFIG}" ] && return
CONFIG="${1}"
[ -f "${CONFIG}" ] && return
local addr=`get_hwaddr ${1}`
if [ -n "$addr" ]; then
nconfig=`get_config_by_hwaddr ${addr}`
if [ -n "$nconfig" ] ; then
CONFIG=${nconfig##*/}
[ -f "${CONFIG}" ] && return
fi
fi
nconfig=$(LANG=C grep -l "^[[:space:]]*DEVICE=${1}\([[:space:]#]\|$\)" \
/etc/sysconfig/network-scripts/ifcfg-* \
| LC_ALL=C sed -e "$__sed_discard_ignored_files")
if [ -n "$nconfig" -a -f "$nconfig" ]; then
CONFIG=${nconfig##*/}
return
fi
}
source_config ()
{
DEVNAME=`basename $CONFIG | sed 's/^ifcfg-//g'`
if echo ${CONFIG##*/} | grep -q '[^g]-' ; then
PARENTCONFIG=`echo $CONFIG | sed 's/-[^-]*$//g'`
PARENTDEVNAME=${PARENTCONFIG##*/ifcfg-}
[ -f $PARENTCONFIG ] || {
echo $"Missing config file $PARENTCONFIG." >&2
exit 1
}
. $PARENTCONFIG
[ -r "keys-$PARENTDEVNAME" ] && . keys-$PARENTDEVNAME
fi
. $CONFIG
[ -r "keys-$DEVNAME" ] && . keys-$DEVNAME
case "$TYPE" in
Ethernet)
DEVICETYPE="eth"
;;
CIPE)
DEVICETYPE="cipcb"
;;
IPSEC)
DEVICETYPE="ipsec"
;;
Modem)
DEVICETYPE="ppp"
;;
xDSL)
DEVICETYPE="ppp"
;;
ISDN)
DEVICETYPE="ippp"
;;
Wireless)
DEVICETYPE="eth"
;;
"Token Ring")
DEVICETYPE="eth"
;;
CTC)
DEVICETYPE="ctc"
;;
IUCV)
DEVICETYPE="iucv"
;;
GRE | IPIP)
DEVICETYPE="tunnel"
;;
esac
[ -z "$DEVICETYPE" ] && DEVICETYPE=`echo ${DEVICE} | sed "s/[0-9]*$//"`
[ -z "$REALDEVICE" -a -n "$PARENTDEVICE" ] && REALDEVICE=$PARENTDEVICE
[ -z "$REALDEVICE" ] && REALDEVICE=${DEVICE%%:*}
if [ "${DEVICE}" != "${REALDEVICE}" ]; then
ISALIAS=yes
else
ISALIAS=no
fi
if [ -n "$HWADDR" ]; then
HWADDR=`echo $HWADDR | awk '{ print toupper($0) }'`
fi
if [ -n "$MACADDR" ]; then
MACADDR=`echo $MACADDR | awk '{ print toupper($0) }'`
fi
}
expand_config ()
{
if [ -z "${NETMASK}" ]; then
eval `/bin/ipcalc --netmask ${IPADDR}`
fi
if [ -z "${PREFIX}" ]; then
eval `/bin/ipcalc --prefix ${IPADDR} ${NETMASK}`
fi
if [ -z "${BROADCAST}" ]; then
eval `/bin/ipcalc --broadcast ${IPADDR} ${NETMASK}`
fi
if [ -z "${NETWORK}" ]; then
eval `/bin/ipcalc --network ${IPADDR} ${NETMASK}`
fi
}
toggle_value ()
{
if [ "$2" = "yes" -o "$2" = "YES" ] ; then
echo "$1 on"
elif [ "$2" = "no" -o "$2" = "NO" ] ; then
echo "$1 off"
else
echo ''
fi
}
do_netreport ()
{
# Notify programs that have requested notification
( cd /var/run/netreport || exit
for i in * ; do
if [ -f $i ]; then
OWNER=`ls -l $i | awk '{ print $3 }'`
if [ "`id -u`" = "0" ]; then
su -s /bin/bash $OWNER -c "kill -SIGIO $i >/dev/null 2>&1 || rm -f $i >/dev/null 2>&1" > /dev/null 2>&1
else
kill -SIGIO $i >/dev/null 2>&1 || rm -f $i >/dev/null 2>&1
fi
fi
done
)
}
# rename_device() - Rename a network device to something else
# $1 - desired name
# $2 - hardware address to name (no longer used)
# $3 - '/' separated list of devices that are already in use
# (for general calls, use the current device you're trying to
# change to $1)
rename_device()
{
local target=${3##*/}
/sbin/ip link set "$target" name "$1" 2>/dev/null || {
local hw2=`get_hwaddr ${1}`
local nconfig=`get_config_by_hwaddr ${hw2}`
local curdev=`get_device_by_hwaddr ${hw2}`
local dev=
[ -z "${hw2}" ] && return
if [ -n "$nconfig" ]; then
dev=$(. $nconfig ; echo $DEVICE)
oldifs=$IFS
IFS=/
for device in $3 ; do
[ "$dev" = "$device" ] && unset dev
done
IFS=$oldifs
fi
[ -z "$dev" ] && dev=dev$RANDOM
rename_device $dev $hw2 "$3/$curdev"
/sbin/ip link set "$target" name $1 2>/dev/null
}
}
# Sets $alias to the device module if $? != 0
is_available ()
{
LC_ALL= LANG= ip -o link | grep -q $1
[ "$?" = "1" ] || return 0
alias=$(modprobe -c | awk \
'BEGIN { alias = ""; }
$1 == "alias" && $2 == "'"$1"'" { alias = $3; }
$1 == "install" { install[$2] = $3; }
END {
cmd = install[alias];
print alias;
if (alias == "" || alias == "off" || cmd == "/bin/true" || cmd == ":")
exit 1;
exit 0;
}')
[ $? -eq 0 ] || return 2
modprobe $1 > /dev/null 2>&1 || {
return 1
}
if [ -n "$HWADDR" ]; then
local curdev=`get_device_by_hwaddr "$HWADDR"`
if [ -z "$curdev" ]; then
return 1
fi
rename_device "$1" "$HWADDR" "$curdev"
fi
if [ ${alias} == "bonding" ]; then
install_bonding_driver $1
fi
LC_ALL= LANG= ip -o link | grep -q $1
return $?
}
need_hostname ()
{
CHECK_HOSTNAME=`hostname`
if [ "$CHECK_HOSTNAME" = "(none)" -o "$CHECK_HOSTNAME" = "localhost" -o \
"$CHECK_HOSTNAME" = "localhost.localdomain" ]; then
return 0
else
return 1
fi
}
set_hostname ()
{
hostname $1
if ! grep search /etc/resolv.conf >/dev/null 2>&1; then
domain=`echo $1 | sed 's/^[^\.]*\.//'`
if [ -n "$domain" ]; then
rsctmp=`mktemp /tmp/XXXXXX`;
cat /etc/resolv.conf > $rsctmp
echo "search $domain" >> $rsctmp
change_resolv_conf $rsctmp
/bin/rm -f $rsctmp
fi
fi
if [ -d /etc/sysconfig/network-scripts/hostname.d -a -x /usr/bin/run-parts ]; then
/usr/bin/run-parts --arg $1 /etc/sysconfig/network-scripts/hostname.d
fi
}
check_device_down ()
{
if echo $1 | grep -q ':' ; then
if LC_ALL=C ifconfig -a 2>/dev/null | grep -q $1 ; then
return 1
else
return 0
fi
else
if LC_ALL=C ip -o link 2>/dev/null | grep -q "$1[:@].*,UP" ; then
return 1
else
return 0
fi
fi
}
check_mii_tool ()
{
[ -x /sbin/mii-tool ] || return 2
output=`LC_ALL=C mii-tool $1 2>&1`
echo $output | LC_ALL=C grep -q "link ok" && return 1
echo $output | LC_ALL=C grep -q "no link" && return 0 || return 2
}
check_ethtool ()
{
[ -x /usr/sbin/ethtool ] || return 2
output=`LC_ALL=C ethtool $1 2>&1`
echo $output | LC_ALL=C grep -q "Link detected: yes" && return 1
echo $output | LC_ALL=C grep -q "Link detected: no" && return 0 || return 2
}
check_ifplugstatus () {
[ -x /sbin/ifplugstatus ] || return 2
/sbin/ifplugstatus -q $1
ret=$?
[ $ret -eq 0 ] && return 1
[ $ret -eq 3 ] && return 0
return 2
}
check_link_down ()
{
if [ "${MII_NOT_SUPPORTED}" = yes ]; then
return 1
fi
if [ -x /sbin/mii-tool -o -x /usr/sbin/ethtool -o -x /sbin/ifplugstatus ]; then
if ! LC_ALL=C ip link show dev $1 2>/dev/null| grep -q UP ; then
ip link set dev $1 up >/dev/null 2>&1
fi
timeout=0
delay=10
[ -n "$LINKDELAY" ] && delay=$(($LINKDELAY * 2))
while [ $timeout -le $delay ]; do
check_mii_tool $1
m=$?
check_ethtool $1
e=$?
check_ifplugstatus $1
i=$?
if [ $m -eq 1 ] || [ $e -eq 1 ] || [ $i -eq 1 ]; then
return 1
fi
if [ $m -eq 2 ] && [ $e -eq 2 ] && [ $i -eq 2 ]; then
return 1
fi
usleep 500000
timeout=$((timeout+1))
done
return 0
fi
return 1
}
check_default_route ()
{
LC_ALL=C ip route list match 0/0 | grep -q default
}
find_gateway_dev ()
{
. /etc/sysconfig/network
if [ -n "${GATEWAY}" -a "${GATEWAY}" != "none" ] ; then
dev=$(LC_ALL=C /sbin/ip route get to "${GATEWAY}" 2>/dev/null | \
sed -n 's/.* dev \([[:alnum:]]*\) .*/\1/p')
if [ -n "$dev" ]; then
GATEWAYDEV="$dev"
fi
fi
}
# After the device $1 goes away, restore the standard default route; typically
# used for ppp with DEFROUTE temporarily replacing the "standard" default
# route.
# FIXME: This function doesn't support some newer features (GATEWAY in ifcfg,
# $WINDOW, $METRIC)
add_default_route ()
{
. /etc/sysconfig/network
check_default_route && return 0
find_gateway_dev
if [ "$GATEWAYDEV" != "" -a -n "${GATEWAY}" -a \
"${GATEWAY}" != "none" ]; then
if ! check_device_down $1; then
if [ "$GATEWAY" = "0.0.0.0" ]; then
/sbin/ip route add default dev ${GATEWAYDEV}
else
/sbin/ip route add default via ${GATEWAY}
fi
fi
elif [ -f /etc/default-routes ]; then
while read spec; do
/sbin/ip route add $spec
done < /etc/default-routes
rm -f /etc/default-routes
fi
}
is_wireless_device ()
{
[ -x /sbin/iwconfig ] || return 1
LC_ALL=C iwconfig $1 2>&1 | grep -q "no wireless extensions" || return 0
return 1
}
install_bonding_driver ()
{
ethtool -i $1 2>/dev/null | grep -q "driver: bonding" && return 0
[ ! -f /sys/class/net/bonding_masters ] && ( modprobe bonding || return 1 )
echo "+$1" > /sys/class/net/bonding_masters
return 0
}
is_bonding_device ()
{
[ -f "/sys/class/net/$1/bonding/slaves" ]
}
# Invoke this when /etc/resolv.conf has changed:
change_resolv_conf ()
{
s=`/bin/grep '^[\ \ ]*option' /etc/resolv.conf 2>/dev/null`;
if [ "x$s" != "x" ]; then
s="$s"$'\n';
fi;
if [ $# -gt 1 ]; then
let n_args=$#;
while [ $n_args -gt 0 ];
do
if [[ "$s" = *$1* ]]; then
shift;
let n_args=n_args-1;
continue;
fi;
s="$s$1";
shift;
if [ $# -gt 0 ]; then
s="$s"$'\n';
fi;
let n_args=n_args-1;
done;
elif [ $# -eq 1 -a -r "$1" ]; then
if [ "x$s" != "x" ]; then
s="$s"`/bin/grep -vF "$s" $1`;
else
s=`cat $1`;
fi;
else
return
fi;
if [ -e "$RESOLVCONF_FLAGFILE" ]; then
echo "$s" | /sbin/resolvconf -a ${DEVICE}
else
(echo "$s" > /etc/resolv.conf;) >/dev/null 2>&1;
fi
r=$?
if [ $r -eq 0 ]; then
[ -x /sbin/restorecon ] && /sbin/restorecon /etc/resolv.conf >/dev/null 2>&1 # reset the correct context
logger -p local7.notice -t "NET" -i "$0 : updated /etc/resolv.conf";
[ -e /var/lock/subsys/nscd -a ! -e "$RESOLVCONF_FLAGFILE" ] && /usr/sbin/nscd -i hosts; # invalidate cache
fi;
return $r;
}
clear_resolv_conf ()
{
if [ -e "$RESOLVCONF_FLAGFILE" ]; then
/sbin/resolvconf -d ${DEVICE}
elif [ -f /etc/resolv.conf.save ]; then
change_resolv_conf /etc/resolv.conf.save
rm -f /etc/resolv.conf.save
fi
}
