5 # Boot type in initramfs's config
6 bootconf=$(egrep '^BOOT=' /conf/initramfs.conf | tail -1)
8 # can be superseded by command line (used by Debian-Live's netboot for example)
9 for ARGUMENT in ${LIVE_BOOT_CMDLINE}
13 NETBOOT="${ARGUMENT#netboot=}"
18 if [ "$bootconf" != "BOOT=nfs" ] && [ -z "$NETBOOT" ] && [ -z "$FETCH" ] && [ -z "$FTPFS" ] && [ -z "$HTTPFS" ]
20 # Not a net boot : nothing to do
24 # we want to do some basic IP
27 # Ensure all our net modules get loaded so we can actually compare MAC addresses...
31 # Available Ethernet interfaces ?
34 # See if we can derive the boot device
39 echo "Waiting for ethernet card(s) up... If this fails, maybe the ethernet card is not supported by the kernel `uname -r`?"
40 while [ -z "$l_interfaces" ]
42 l_interfaces="$(cd /sys/class/net/ && ls -d * 2>/dev/null | grep -v "lo")"
45 if [ $(echo $l_interfaces | wc -w) -lt 2 ]
47 # only one interface : no choice
48 echo "DEVICE=$l_interfaces" >> /conf/param.conf
52 # If user force to use specific device, write it
53 for ARGUMENT in ${LIVE_BOOT_CMDLINE}
57 NETDEV="${ARGUMENT#live-netdev=}"
58 # net device could be specified by MAC address
59 hex="[0-9A-Fa-f][0-9A-Fa-f]"
61 ${hex}:${hex}:${hex}:${hex}:${hex}:${hex})
62 # MAC address; record it and select later
63 netdev_mac_addr="${NETDEV}"
67 echo "DEVICE=$NETDEV" >> /conf/param.conf
68 echo "Found live-netdev parameter, forcing to to use network device $NETDEV."
76 l_interfaces="$DEVICE"
82 echo -n "Looking for a connected Ethernet interface ..."
84 for interface in $l_interfaces
86 # ATTR{carrier} is not set if this is not done
87 echo -n " $interface ?"
88 ipconfig -c none -d $interface -t 1 >/dev/null 2>&1
95 for interface in $l_interfaces
97 if [ -z "$netdev_mac_addr" ]; then
98 carrier=$(cat /sys/class/net/$interface/carrier \
104 echo "Connected $interface found"
105 # inform initrd's init script :
106 found_eth_dev="$found_eth_dev $interface"
110 # MAC addr given, check for that
111 mac_addr=$(ifconfig "$interface" \
113 | { read _ _ _ _ mac_addr; echo $mac_addr; })
114 if [ "$mac_addr" = "$netdev_mac_addr" ]; then
115 found_eth_dev="$interface"
119 if [ -n "$found_eth_dev" ]
121 echo "DEVICE='$found_eth_dev'" >> /conf/param.conf