# -*-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 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-* } get_device_by_hwaddr () { LANG=C ip -o link | grep -v link/ieee802.11 | awk -F ': ' -vIGNORECASE=1 "/$1/ { print \$2 }" } need_config () { CONFIG="ifcfg-${1}" [ -f "${CONFIG}" ] && return CONFIG="${1}" [ -f "${CONFIG}" ] && return local addr=`get_hwaddr ${1}` if [ -n "$addr" ]; then local nconfig=`get_config_by_hwaddr ${addr}` if [ -n "$nconfig" ] ; then CONFIG=$nconfig [ -f "${CONFIG}" ] && return fi 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 $1 > /dev/null 2>&1 || { return 1 } # if it is a mainframe ccwgroup device, configure it before # trying to rename it: configure_ccwgroup_device if [ -n "$HWADDR" ]; then local curdev=`get_device_by_hwaddr "$HWADDR"` if [ -z "$curdev" ]; then return 1 fi rename_device "$1" "$HWADDR" "$curdev" 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 } 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 /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_link_down () { if [ -x /sbin/mii-tool -o -x /sbin/ethtool ]; 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 while [ $timeout -le 10 ]; do check_mii_tool $1 m=$? check_ethtool $1 e=$? if [ $m -eq 1 ] || [ $e -eq 1 ] ; then return 1 fi if [ $m -eq 2 ] && [ $e -eq 2 ] ; then return 1 fi usleep 500000 timeout=$((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 $1 2>&1 | grep -q "no wireless extensions" || return 0 return 1 } # Mainframe devices: configure_ccwgroup_device () { local DIR SYSDIR # SUBCHANNELS is only set on mainframe ccwgroup devices [ -z "$SUBCHANNELS" -o -z "$NETTYPE" ] && return DIR="/sys/bus/ccwgroup/drivers/$NETTYPE" SYSDIR="$DIR/${SUBCHANNELS//,*/}" [ ! -e $DIR/group ] && return echo "$SUBCHANNELS" > $DIR/group if [ -n "$PORTNAME" ]; then if [ "$NETTYPE" = "lcs" ]; then [ -e $SYSDIR/portno ] && echo "$PORTNAME" > $SYSDIR/portno else [ -e $SYSDIR/portname ] && echo "$PORTNAME" > $SYSDIR/portname fi fi if [ "$NETTYPE" = "ctc" -a -n "$CTCPROT" ]; then echo "$CTCPROT" > $SYSDIR/protocol fi if [ -n "$OPTIONS" ]; then for i in $OPTIONS; do echo "${i//*=/}" > "$SYSDIR/${i//=*/}" done fi [ -e $SYSDIR/online ] && echo 1 > $SYSDIR/online } # Invoke this when /etc/resolv.conf has changed: change_resolv_conf () { s=`/bin/grep '^[\ \ ]*option' /etc/resolv.conf 2>/dev/null`; if [ "x$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 [ $# -eq 1 ]; then if [ "x$s" != "x" ]; then s="$s"`/bin/grep -vF "$s" $1`; else s=`cat $1`; fi; fi; (echo "$s" > /etc/resolv.conf;) >/dev/null 2>&1; r=$? if [ $r -eq 0 ]; then logger -p local7.notice -t "NET" -i "$0 : updated /etc/resolv.conf"; [ -e /var/lock/subsys/nscd ] && /usr/sbin/nscd -i hosts; # invalidate cache fi; return $r; }