5da1f1324b
Rename generate-interfaces-file.sh to dhcp-all-interfaces.sh so that it is easier to find/remember in the $PATH on a deployed image. Also, on some distros the script actually generates many files so the previous name was a bit confusing. Change-Id: I7152fa7c28e8ade251311da2cd5f75972423b66c
81 lines
2 KiB
Bash
Executable file
81 lines
2 KiB
Bash
Executable file
#!/bin/bash
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ENI_FILE="/etc/network/interfaces"
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if [ -d "/etc/network" ]; then
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CONF_TYPE="eni"
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elif [ -d "/etc/sysconfig/network-scripts/" ]; then
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CONF_TYPE="netscripts"
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else
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echo "Unsupported network configuration type!"
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exit 1
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fi
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if [ "$CONF_TYPE" == "eni" ]; then
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# Serialize runs so that we don't miss hot-add interfaces
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FLOCK=${1:-}
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if [ -z "$FLOCK" ] ; then
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exec flock -x $ENI_FILE $0 flocked
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fi
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fi
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function get_if_link() {
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cat /sys/class/net/${1}/carrier
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}
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function enable_interface() {
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local interface=$1
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if [ "$CONF_TYPE" == "eni" ]; then
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printf "auto $interface\niface $interface inet dhcp\n\n" >>$ENI_FILE
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elif [ "$CONF_TYPE" == "netscripts" ]; then
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printf "DEVICE=\"$interface\"\nBOOTPROTO=\"dhcp\"\nONBOOT=\"yes\"\nTYPE=\"Ethernet\"" >"/etc/sysconfig/network-scripts/ifcfg-$interface"
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fi
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echo "Configured $1"
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}
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function disable_interface() {
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local interface=$1
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if [ "$CONF_TYPE" == "netscripts" ]; then
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local IFCFG_FILE="/etc/sysconfig/network-scripts/ifcfg-$interface"
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if [ -f "$IFCFG_FILE" ]; then
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rm $IFCFG_FILE
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else
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echo "No link detected, skipping"
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fi
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else
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echo "No link detected, skipping"
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fi
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}
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for interface in $(ls /sys/class/net | grep -v ^lo$) ; do
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MAC_ADDR_TYPE="$(cat /sys/class/net/${interface}/addr_assign_type)"
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echo -n "Inspecting interface: $interface..."
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if ifquery $interface >/dev/null 2>&1 ; then
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echo "Has config, skipping."
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elif [ "$MAC_ADDR_TYPE" != "0" ]; then
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echo "Device has generated MAC, skipping."
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else
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ip link set dev $interface up >/dev/null 2>&1
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HAS_LINK="$(get_if_link $interface)"
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TRIES=10
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while [ "$HAS_LINK" == "0" -a $TRIES -gt 0 ]; do
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HAS_LINK="$(get_if_link $interface)"
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if [ "$HAS_LINK" == "1" ]; then
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break
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else
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sleep 1
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fi
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TRIES=$(( TRIES - 1 ))
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done
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if [ "$HAS_LINK" == "1" ] ; then
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enable_interface "$interface"
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else
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disable_interface "$interface"
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fi
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fi
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done
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