5e18777691
This change adds support in ramdisk element for recognising boot from virtual media cdrom and read the parameters from the configuration file in virtual media floppy. Change-Id: I28ca888b4ead4905f7141b38ed4b9a3614d00d26 Closes-Bug: #1321564
314 lines
7 KiB
Text
Executable file
314 lines
7 KiB
Text
Executable file
# Copyright (c) 2012 NTT DOCOMO, INC.
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# Copyright 2012 Hewlett-Packard Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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function configure_vmedia_dir() {
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VMEDIA_MOUNT_POINT="/vfloppy_mnt"
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VMEDIA_DIR="/vfloppy"
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VMEDIA_CONFIG_FILE="parameters.txt"
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SYSFS_DEVICE_MODELS="/sys/class/block/*/device/model"
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SYSFS_VMEDIA_DEVICE_MODEL="virtual media"
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# Wait for some seconds for kernel to finish initializing the
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# virtual media devices.
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wait_for 5 1 "grep -q -i \"$SYSFS_VMEDIA_DEVICE_MODEL\" $SYSFS_DEVICE_MODELS"
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if [[ $? != 0 ]]; then
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echo "Error finding the virtual floppy device on the node."
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troubleshoot
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fi
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# Find the virtual media device from the kernel sysfs file system.
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VMEDIA_DEVICE=$(grep -l -i "$SYSFS_VMEDIA_DEVICE_MODEL" $SYSFS_DEVICE_MODELS | awk -F'/' '{print $5}')
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if [[ -z $VMEDIA_DEVICE ]]; then
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echo "Error finding the virtual floppy device on the node."
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troubleshoot
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fi
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# Mount the virtual media device
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VMEDIA_DEVICE_FILE="/dev/$VMEDIA_DEVICE"
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mkdir -p $VMEDIA_MOUNT_POINT
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mount $VMEDIA_DEVICE_FILE $VMEDIA_MOUNT_POINT
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if [[ $? != 0 ]]; then
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echo "Error mounting virtual media device $VMEDIA_DEVICE_FILE"
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troubleshoot
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fi
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# Copy the contents of the virtual media to a directory in root
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# filesystem so that we can unmount virtual media soon.
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cp -rf $VMEDIA_MOUNT_POINT $VMEDIA_DIR
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umount $VMEDIA_MOUNT_POINT
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}
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function get_kernel_parameter() {
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if [ "$BOOT_METHOD" = "$VMEDIA_BOOT_TAG" ]; then
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echo $(find_parameter_from_file $1 "$VMEDIA_DIR/$VMEDIA_CONFIG_FILE")
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else
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echo $(find_parameter_from_file $1 "/proc/cmdline")
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fi
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}
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function find_parameter_from_file() {
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local paramname=$1
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local filename=$2
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for i in `cat $filename`; do
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case "$i" in
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${paramname}=*)
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echo "${i#${paramname}=}"
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return 0
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;;
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${paramname})
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echo ""
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return 0
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;;
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*)
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;;
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esac
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done
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echo ""
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return 1
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}
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function string_contains() {
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local string=$1
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local word=$2
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if [ "$string" != "${string/$word/}" ]; then
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return 0
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else
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return 1
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fi
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}
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function load_modules_by_udev() {
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udevadm trigger --action=add
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udevadm settle
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}
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function strip_dev() {
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echo "$1" | sed -e 's:^/dev/::'
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}
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function prepend_dev() {
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case "$1" in
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/dev/*)
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echo "$1"
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;;
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*)
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echo "/dev/$1"
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;;
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esac
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}
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function whole_disk_name() {
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local dev=`prepend_dev "$1"`
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case "$dev" in
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/dev/sd*|/dev/hd*|/dev/vd*)
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echo "$dev" | sed -e 's/[0-9]*$//'
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;;
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/dev/cciss/*)
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echo "$dev" | sed -e 's/p[0-9]*$//'
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;;
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*)
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echo ""
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return 1
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;;
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esac
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}
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function partition_name() {
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local dev=`prepend_dev "$1"`
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local part=$2
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case "$dev" in
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/dev/sd*|/dev/hd*|/dev/vd*)
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echo "${dev}${part}"
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;;
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/dev/cciss/*)
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echo "${dev}p${part}"
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;;
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*)
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echo ""
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return 1
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;;
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esac
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}
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function find_interface() {
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local mac=$1
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eth=`ifconfig -a | grep -i "$mac" | awk {' print $1 '} | head -n 1`
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if [ -n "$eth" ]; then
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echo "$eth"
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return 0
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else
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return 1
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fi
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}
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function set_mac() {
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local dev=$1
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local mac=$2
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ip link set "$dev" address "$mac"
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}
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function swap_ifname() {
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local dev=$1
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local dev2=$2
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if [ "$dev" = "$dev2" ]; then
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return
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fi
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if ip link show "$dev2" >/dev/null; then
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# dev2 exists
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# swap device name
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ip link set "$dev" name "_$dev"
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ip link set "$dev2" name "$dev"
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ip link set "_$dev" name "$dev2"
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else
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ip link set "$dev" name "$dev2"
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fi
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}
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function partition_exists() {
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local dev=$1
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dev=`strip_dev "$dev"`
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if tail -n +3 /proc/partitions | grep "$dev" >/dev/null; then
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return 0
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else
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return 1
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fi
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}
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function find_disk() {
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local disks=$1
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local dev
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# find device
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local OLD_IFS=$IFS
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IFS=,
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for i in $disks; do
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dev=`whole_disk_name "$i"`
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if partition_exists "$dev"; then
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dev=`prepend_dev "$dev"`
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break
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fi
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dev=""
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done
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IFS=$OLD_IFS
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if [ -z "$dev" ]; then
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return 1
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fi
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echo "$dev"
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return 0
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}
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function check_tgtd_socket() {
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echo -n "waiting for tgtd socket..."
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if [ -e /var/run/tgtd.ipc_abstract_namespace.0 ]; then
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echo "found"
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return 0
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else
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echo "not found"
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return 1
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fi
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}
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wait_for(){
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LOOPS=$1
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SLEEPTIME=$2
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shift ; shift
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i=0
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while [ $i -lt $LOOPS ] ; do
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i=$((i + 1))
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eval "$@" && return 0 || true
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sleep $SLEEPTIME
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done
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return 1
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}
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function start_iscsi_target() {
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local iqn=$1
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local dev=$2
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local cli=$3
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# used by tgtd
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mkdir -p /var/run
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tgtd
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wait_for 10 0.5 check_tgtd_socket
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tgtadm --lld iscsi --mode target --op new --tid 1 --targetname "$iqn"
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tgtadm --lld iscsi --mode logicalunit --op new --tid 1 --lun 1 --backing-store "$dev"
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tgtadm --lld iscsi --mode target --op bind --tid 1 --initiator-address "$cli"
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}
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function stop_iscsi_target() {
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tgtadm --lld iscsi --mode logicalunit --op delete --tid 1 --lun 1
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tgtadm --lld iscsi --mode target --op delete --tid 1
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killall tgtd
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}
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function troubleshoot() {
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if [ "$TROUBLESHOOT" != 1 ]; then
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_DO_TROUBLESHOOT=""
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_t=0
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echo -n "Troubleshooting required, press t to launch shell."
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while [ $_t -lt 10 ]; do
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read -n 1 -t 1 _DO_TROUBLESHOOT
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_t=$(($_t + 1))
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if [ "$_DO_TROUBLESHOOT" == "t" ]; then
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export TROUBLESHOOT=1
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break
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fi
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echo -n "."
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done
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echo ""
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fi
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if [ "$TROUBLESHOOT" == 1 ]; then
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echo "Starting troubleshooting shell."
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bash
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fi
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}
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function safe_url_encode() {
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local str=$1
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local out=""
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for (( i=0; i<${#str}; i++ )); do
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c=${str:$i:1}
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case $c in
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[a-zA-Z0-9.-_] )
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out+="$c"
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;;
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' ' )
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out+="+"
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;;
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*)
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#skip it
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;;
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esac
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done
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echo "$out"
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}
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function err_msg() {
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message=$1
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if [ -z "$FIRST_ERR_MSG" ]; then
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FIRST_ERR_MSG=$(safe_url_encode "$message")
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fi
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echo "$message"
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}
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