diskimage-builder/elements/ramdisk/extra-data.d/scripts/init

#!/bin/bash

# Copyright (c) 2012 NTT DOCOMO, INC.
# Copyright 2012 Hewlett-Packard Development Company, L.P.
#
#
#    Licensed under the Apache License, Version 2.0 (the "License"); you may
#    not use this file except in compliance with the License. You may obtain
#    a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#    License for the specific language governing permissions and limitations
#    under the License.

# NOTE(bnemec): We don't want this script to exit on failures because if init
# dies then we get a kernel panic on ramdisk boot.
# dib-lint: disable=sete setu setpipefail

echo "init"

source /init-func

PATH=/sbin:/bin:/usr/bin:/usr/sbin
export PATH

mkdir -p /proc /sys /dev /boot /etc /mnt /lib/modules

mount -t proc proc /proc

FIRST_ERR_MSG=

mount -t sysfs none /sys

UDEVD=
if [ -x "/bin/systemd-udevd" ]; then
    UDEVD="systemd-udevd"
else
    UDEVD="udevd"
fi

# udev versions 176 and newer require a different on-disk setup
UDEVD_VERSION=$(udevadm --version)

if [ "$UDEVD_VERSION" != "" -a $UDEVD_VERSION -gt 175 ]; then
    echo "Using new-style udevd setup"
    mount -t devtmpfs none /dev
    mkdir -p /run
    mount -t tmpfs -o "nosuid,size=20%,mode=0755" tmpfs /run
    mkdir -p /run/{lock,udev}
else
    echo "Using old-style udevd setup"
    mount -t tmpfs none /dev
    ln -sf /proc/self/fd /dev/fd
    mknod /dev/null c 1 3
    mknod /dev/zero c 1 5
    mknod /dev/random c 1 8
    mknod /dev/urandom c 1 9
    mknod /dev/tty0 c 4 0
    mknod /dev/tty1 c 4 1
    mknod /dev/tty2 c 4 2
    mknod /dev/tty3 c 4 3
    mknod /dev/tty4 c 4 4
    mknod /dev/tty5 c 4 5
    mknod /dev/tty6 c 4 6
    mknod /dev/tty7 c 4 7
    mknod /dev/tty8 c 4 8
    mknod /dev/tty9 c 4 9
    mknod /dev/tty c 5 0
    mknod -m 0600 /dev/console c 5 1
    mknod -m 0666 /dev/ptmx c 5 2
    mkdir -p /dev/.udev/data
fi

echo "starting syslogd"

echo '*.* /initlog' > /etc/syslog.conf
syslogd
klogd

echo "starting udevd"
$UDEVD --daemon --resolve-names=never

echo "load modules"
load_modules_by_udev

# To identify that the node has booted from virtual media, a kernel
# command-line argument boot_method=vmedia is added in the iso bootloader
# configuration file (like isolinux.cfg for isolinux).
VMEDIA_BOOT_TAG="vmedia"
BOOT_METHOD=$(get_kernel_parameter boot_method)

if [ "$BOOT_METHOD" = "$VMEDIA_BOOT_TAG" ]; then

    # If the node booted from virtual media cdrom, the arguments for the
    # installation are provided in virtual media floppy. Find out
    # the virtual media device, mount it and get the information.
    configure_vmedia_dir
fi

readonly _BOOTIF_=$(get_kernel_parameter BOOTIF)
readonly _IP_=$(get_kernel_parameter ip)
readonly BOOT_MAC_ADDRESS=$(echo "$_BOOTIF_" | sed -e "s/-/:/g" | \
                            sed -e "s/^01://g" | tr 'a-f' 'A-F')
readonly BOOT_SERVER=$(echo "$_IP_" | cut -d':' -f2)

# IP address, netmask, gateway can be set a later point of time if
# IP address is assigned by dhcp (for non-pxe boots).
BOOT_IP_ADDRESS=$(echo "$_IP_" | cut -d':' -f1)
BOOT_NETMASK=$(echo "$_IP_" | cut -d':' -f4)
BOOT_GATEWAY=$(echo "$_IP_" | cut -d':' -f3)

readonly DISK=$(get_kernel_parameter disk)

readonly DEPLOYMENT_ID=$(get_kernel_parameter deployment_id)
readonly DEPLOYMENT_KEY=$(get_kernel_parameter deployment_key)
readonly ISCSI_TARGET_IQN=$(get_kernel_parameter iscsi_target_iqn)
TROUBLESHOOT=$(get_kernel_parameter troubleshoot)