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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2019-02-02 10:00:00 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2019-02-02 10:00:00 +0000 |
commit | 32322960234c8ec91e0d42835a3ec5ee63305070 (patch) | |
tree | 71d79574de0193778ad6cc6c96dfd4f74fa6bbbb /system-boot/components/9990-select-eth-device.sh | |
parent | Initial commit. (diff) | |
download | open-infrastructure-system-tools-upstream/20190202.tar.xz open-infrastructure-system-tools-upstream/20190202.zip |
Adding upstream version 20190202.upstream/20190202
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'system-boot/components/9990-select-eth-device.sh')
-rwxr-xr-x | system-boot/components/9990-select-eth-device.sh | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/system-boot/components/9990-select-eth-device.sh b/system-boot/components/9990-select-eth-device.sh new file mode 100755 index 0000000..c8f36b0 --- /dev/null +++ b/system-boot/components/9990-select-eth-device.sh @@ -0,0 +1,108 @@ +#!/bin/sh + +Select_eth_device () +{ + # Boot type in initramfs's config + bootconf=$(egrep '^BOOT=' /conf/initramfs.conf | tail -1) + + # can be superseded by command line (used by Debian-Live's netboot for example) + for ARGUMENT in ${LIVE_BOOT_CMDLINE} + do + case "${ARGUMENT}" in + netboot=*) + NETBOOT="${ARGUMENT#netboot=}" + ;; + esac + done + + if [ "$bootconf" != "BOOT=nfs" ] && [ -z "$NETBOOT" ] && [ -z "$FETCH" ] && [ -z "$FTPFS" ] && [ -z "$HTTPFS" ] + then + # Not a net boot : nothing to do + return + fi + + # we want to do some basic IP + modprobe -q af_packet + + # Ensure all our net modules get loaded so we can actually compare MAC addresses... + udevadm trigger + udevadm settle + + # Available Ethernet interfaces ? + l_interfaces="" + + # See if we can derive the boot device + Device_from_bootif + + if [ -z "$DEVICE" ] + then + echo "Waiting for ethernet card(s) up... If this fails, maybe the ethernet card is not supported by the kernel `uname -r`?" + while [ -z "$l_interfaces" ] + do + l_interfaces="$(cd /sys/class/net/ && ls -d * 2>/dev/null | grep -v "lo")" + done + + if [ $(echo $l_interfaces | wc -w) -lt 2 ] + then + # only one interface : no choice + echo "DEVICE=$l_interfaces" >> /conf/param.conf + return + fi + + # If user force to use specific device, write it + for ARGUMENT in ${LIVE_BOOT_CMDLINE} + do + case "${ARGUMENT}" in + live-netdev=*) + NETDEV="${ARGUMENT#live-netdev=}" + echo "DEVICE=$NETDEV" >> /conf/param.conf + echo "Found live-netdev parameter, forcing to to use network device $NETDEV." + return + ;; + esac + done + else + l_interfaces="$DEVICE" + fi + + found_eth_dev="" + while true + do + echo -n "Looking for a connected Ethernet interface ..." + + for interface in $l_interfaces + do + # ATTR{carrier} is not set if this is not done + echo -n " $interface ?" + ipconfig -c none -d $interface -t 1 >/dev/null 2>&1 + done + + echo '' + + for step in 1 2 3 4 5 + do + for interface in $l_interfaces + do + carrier=$(cat /sys/class/net/$interface/carrier \ + 2>/dev/null) + # link detected + + case "${carrier}" in + 1) + echo "Connected $interface found" + # inform initrd's init script : + found_eth_dev="$found_eth_dev $interface" + ;; + esac + done + if [ -n "$found_eth_dev" ] + then + echo "DEVICE='$found_eth_dev'" >> /conf/param.conf + return + else + # wait a bit + sleep 1 + fi + done + done +} |