46 lines
1.1 KiB
Bash
46 lines
1.1 KiB
Bash
|
#!/bin/sh
|
||
|
|
#
|
||
|
|
# Set unique host name rp-xxxxxx based on MAC address.
|
||
|
|
#
|
||
|
|
|
||
|
|
start() {
|
||
|
|
|
||
|
|
# Read "ethaddr" variable from U-Boot environment in EEPROM.
|
||
|
|
#
|
||
|
|
# Environment starts at address 0x1800 and is 1024 bytes long.
|
||
|
|
# The environment consists of "key=value" pairs, separated by 0x00 bytes.
|
||
|
|
#
|
||
|
|
ethaddr_pair="$( dd if=/sys/bus/i2c/devices/0-0050/eeprom bs=1k skip=6 count=1 status=none | tr '\000' '\n' | grep ^ethaddr= )"
|
||
|
|
|
||
|
|
if [ -z "${ethaddr_pair}" ]; then
|
||
|
|
echo "ERROR: ethaddr not found in EEPROM enviroment" >&2
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
|
||
|
|
ethaddr="${ethaddr_pair#ethaddr=}"
|
||
|
|
|
||
|
|
suffix="$( echo $ethaddr | cut -d: -f 4- | tr -d : | tr ABCEDF abcdef )"
|
||
|
|
hostname="rp-${suffix}"
|
||
|
|
|
||
|
|
echo "Setting hostname ${hostname}"
|
||
|
|
|
||
|
|
echo $hostname > /etc/hostname
|
||
|
|
/bin/hostname -F /etc/hostname
|
||
|
|
|
||
|
|
grep -v '^127\.0\.1\.1' /etc/hosts > /etc/hosts.new
|
||
|
|
echo "127.0.1.1 $hostname" >>/etc/hosts.new
|
||
|
|
mv /etc/hosts.new /etc/hosts
|
||
|
|
}
|
||
|
|
|
||
|
|
case "$1" in
|
||
|
|
start)
|
||
|
|
start
|
||
|
|
;;
|
||
|
|
stop|restart|reload)
|
||
|
|
;;
|
||
|
|
*)
|
||
|
|
echo "Usage: $0 start"
|
||
|
|
exit 1
|
||
|
|
esac
|
||
|
|
|