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scripts: Add script to switch zipl config to a BootLoaderSpec setup
Add a zipl-switch-to-blscfg script that can be used to switch the zipl configuration in a system to use the BootLoaderSpec (BLS) config files to define the IPL sections instead of having them defined in zipl.conf. Closes: #28 Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Javier Martinez Canillas
committed by
Jan Höppner
Jan Höppner
parent
d280e5b1fa
commit
b8a9f0d1d3
@@ -1,7 +1,7 @@
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include ../common.mak
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SCRIPTS = dbginfo.sh zfcpdbf scsi_logging_level
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MAN_PAGES = dbginfo.sh.1 zfcpdbf.1
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SCRIPTS = dbginfo.sh zfcpdbf zipl-switch-to-blscfg scsi_logging_level
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MAN_PAGES = dbginfo.sh.1 zfcpdbf.1 zipl-switch-to-blscfg.1
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all:
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213
scripts/zipl-switch-to-blscfg
Executable file
213
scripts/zipl-switch-to-blscfg
Executable file
@@ -0,0 +1,213 @@
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#!/bin/bash
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#
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# zipl-switch-to-blscfg - Switch zipl to use BootLoaderSpec configuration
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#
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# Copyright 2018 Red Hat, Inc.
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#
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# s390-tools is free software; you can redistribute it and/or modify
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# it under the terms of the MIT license. See LICENSE for details.
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#
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readonly SCRIPTNAME="${0##*/}"
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declare -A zipl_to_bls
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zipl_to_bls["image"]="linux"
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zipl_to_bls["ramdisk"]="initrd"
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zipl_to_bls["parameters"]="options"
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print_error() {
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echo "$1" >&2
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exit 1
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}
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function on_exit() {
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if ! rm -rf $TMP; then
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echo "Delete temporary files failed!" >&2
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exit 1
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fi
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}
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if ! TMP="$(mktemp -d)"; then
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print_error "Creating a temporary dir for config files failed!"
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fi
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trap 'on_exit' EXIT
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print_version() {
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cat <<EOF
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${SCRIPTNAME}: version %S390_TOOLS_VERSION%
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Copyright Red Hat, Inc. 2018
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EOF
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}
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print_usage()
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{
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print_version
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cat <<EOF
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Usage: ${SCRIPTNAME} [OPTIONS]
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Switches the zipl boot-loader configuration to use BootLoaderSpec files.
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Options:
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-h, --help print this help and exit
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-v, --version print version information and exit
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--backup-suffix=SUFFIX suffix used for backup files, defaults to .bak
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--bls-directory=DIR path to generate BLS files, defaults to /boot/loader/entries
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--config-file=FILE path to zipl configuration file, defaults to /etc/zipl.conf
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--ignore-default ignore the default option from the zipl configuration file
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--use-version-name use the section kernel version as the BLS file name
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EOF
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}
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OPTS="$(getopt -o hv --long help,version,backup-suffix:,bls-directory:,config-file:,\
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ignore-default,use-version-name -n \'$SCRIPTNAME\' -- "$@")"
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eval set -- "$OPTS"
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BACKUP_SUFFIX=.bak
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BLS_DIR="/boot/loader/entries"
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CMDLINE_LINUX_DEBUG=" systemd.log_level=debug systemd.log_target=kmsg"
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LINUX_DEBUG_VERSION_POSTFIX="_with_debugging"
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LINUX_DEBUG_TITLE_POSTFIX=" with debugging"
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CONFIG="/etc/zipl.conf"
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while [ ${#} -gt 0 ]; do
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case "$1" in
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--help|-h)
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print_usage
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exit 0
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;;
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--version|-v)
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print_version
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exit 0
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;;
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--backup-suffix)
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BACKUP_SUFFIX=${2}
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shift
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;;
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--bls-directory)
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BLS_DIR=${2}
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shift
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;;
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--config-file)
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CONFIG=${2}
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shift
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;;
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--ignore-default)
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ignore_default=true
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;;
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--use-version-name)
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version_name=true
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;;
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--)
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shift
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break
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;;
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*)
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echo >&2
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echo "${SCRIPTNAME}: invalid option \"${1}\"" >&2
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echo "Try '${SCRIPTNAME} --help' for more information" >&2
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echo >&2
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exit 1
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;;
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esac
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shift
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done
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TMP_CONFIG="${TMP}/${CONFIG##*/}"
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[[ -d "$BLS_DIR" ]] || mkdir -m 0700 -p "$BLS_DIR"
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if [ -f /etc/machine-id ]; then
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read MACHINE_ID < /etc/machine-id
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MACHINE_ID=${MACHINE_ID}-
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fi
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count=0
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OUTPUT=""
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TARGET=""
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while IFS='= ' read key val; do
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# for BLS the default kernel is always the latest one
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if [[ $key == \#* ]] || [[ $key == "default" && $ignore_default == true ]]; then
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continue
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fi
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# remove spaces
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key="$(echo $key | sed -e 's/^[ \t"]*//;s/[ \t"]*$//')"
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if [[ $key = \[*] ]]; then
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if [[ $key == "[defaultboot]" ]]; then
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OUTPUT=${TMP_CONFIG}
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echo $key >> ${OUTPUT}
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else
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key="${key%\]}"
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key="${key#\[}"
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section=$key
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OUTPUT=${BLS_DIR}/${MACHINE_ID}${section}.conf
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if [ -f "${OUTPUT}" ]; then
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print_error "BLS file ${OUTPUT} already exists"
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fi
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fi
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elif [[ $val ]]; then
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val="$(echo $val | sed -e 's/^[ \t"]*//;s/[ \t"]*$//')"
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if [[ $key == "target" ]]; then
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if [ -z ${TARGET} ]; then
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echo $key=$val >> ${TMP_CONFIG}
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TARGET=$val
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else if [ "${TARGET}" != "${val}" ]; then
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print_error "BLS is only supported if all sections have the same target"
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fi
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fi
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else
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if [ -n "${zipl_to_bls[$key]}" ]; then
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if [[ $key = "image" && $version_name == true ]]; then
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if [[ $val = *"vmlinuz-"* ]]; then
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version="${val##*/vmlinuz-}"
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else
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version="${val##*/}"
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fi
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echo "version $version" >> ${OUTPUT}
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if [[ $version = *"rescue"* ]]; then
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FILENAME=${BLS_DIR}/${MACHINE_ID}0-rescue.conf
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else
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FILENAME=${BLS_DIR}/${MACHINE_ID}${version}.conf
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fi
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if [[ ${OUTPUT} != ${FILENAME} ]]; then
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if [ -f "${FILENAME}" ]; then
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print_error "BLS file ${FILENAME} already exists"
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fi
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mv ${OUTPUT} ${FILENAME}
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if [ ! $? -eq 0 ]; then
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print_error "Creating BLS file ${FILENAME} failed"
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fi
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OUTPUT=${FILENAME}
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fi
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elif [[ $key = "image" ]]; then
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echo "version $section" >> ${OUTPUT}
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fi
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echo "${zipl_to_bls[$key]} ${val}" >> ${OUTPUT}
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else
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echo $key=$val >> ${TMP_CONFIG}
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fi
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fi
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fi
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done < "${CONFIG}"
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if [ -f "${CONFIG}${BACKUP_SUFFIX}" ]; then
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print_error "Backup file ${CONFIG}${BACKUP_SUFFIX} already exists"
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fi
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cp -af "${CONFIG}" "${CONFIG}${BACKUP_SUFFIX}"
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mv "${TMP_CONFIG}" "${CONFIG}"
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zipl > /dev/null
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if [ ! $? -eq 0 ]; then
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mv "${CONFIG}${BACKUP_SUFFIX}" "${CONFIG}"
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fi
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exit 0
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45
scripts/zipl-switch-to-blscfg.1
Normal file
45
scripts/zipl-switch-to-blscfg.1
Normal file
@@ -0,0 +1,45 @@
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.TH ZIPL-SWITCH-TO-BLSCFG 1 "April 2018" "s390-tools"
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.SH NAME
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zipl-switch-to-blscfg \- Switch zipl to use BootLoaderSpec configuration
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.SH SYNOPSIS
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.br
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\fBzipl-switch-to-blscfg\fP [OPTIONS]
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.br
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\fBzipl-switch-to-blscfg\fP {\-h|\-v}
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.SH DESCRIPTION
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This script switches the zipl boot-loader configuration to use BootLoaderSpec files
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to define IPL sections. For each Linux kernel defined in the zipl.conf config file,
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a BLS fragment is generated in the BLS directory specified. Also, the zipl.conf is
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modified it only contains global configurations, all IPL sections comes from BLS.
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.SH OPTIONS
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.TP
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\fB\-h\fP, \fB\-\-help\fP
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Print this help and exit
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.TP
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\fB\-v\fP, \fB\-\-version\fP
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Print version information and exit
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.TP
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\fB\-\-backup-suffix <SUFFIX>\fP
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The suffix used for backup files, defaults to .bak.
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.TP
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\fB\-\-bls-directory <DIRECTORY>\fP
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The DIRECTORY where the BLS fragments will be generated. The directory is created if it doesn't exists, by default /boot/loader/entries is used.
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.TP
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\fB\-\-config-file <FILE>\fP
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The FILE used for zipl configuration file, defaults to /etc/zipl.conf.
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.TP
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\fB\-\-ignore-default\fP
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Ignore the default option from the zipl configuration file
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.TP
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\fB\-\-use-version-name\fP
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Use the section kernel version as the BLS file name
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