6abeb6fc77
Currently there's no way to update the kernelopts variable defined in the grubenv by using the grubby wrapper. Updating it with grub2-editenv - set is tedious and error prone so let's use --update-kernel=ALL option for it. This command currently iterates over all the BLS entries and update them individually, but makes more sense to update the kernelopts grubenv var and only update the BLS entries that don't have the $kernelopts var in their options field. If after an update one of these BLS entries have exactly the same params in their options field than the ones set in $kernelopts, set the options field to $kernelopts again since the parameters have converged again. That way the modified BLS entries will only have a custom options field while its value diverged from the $kernelopts defined in grubenv. Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
796 lines
21 KiB
Bash
Executable File
796 lines
21 KiB
Bash
Executable File
#!/bin/bash
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#
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# grubby wrapper to manage BootLoaderSpec files
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#
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#
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# Copyright 2018 Red Hat, Inc. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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readonly SCRIPTNAME="${0##*/}"
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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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declare -a bls_file
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declare -a bls_title
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declare -a bls_version
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declare -a bls_linux
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declare -a bls_initrd
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declare -a bls_options
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declare -a bls_id
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[[ -f /etc/sysconfig/kernel ]] && . /etc/sysconfig/kernel
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[[ -f /etc/os-release ]] && . /etc/os-release
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read MACHINE_ID < /etc/machine-id
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arch=$(uname -m)
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if [[ $arch = 's390' || $arch = 's390x' ]]; then
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bootloader="zipl"
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else
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bootloader="grub2"
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fi
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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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print_info() {
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echo "$1" >&2
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}
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if [[ ${#} = 0 ]]; then
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print_error "no action specified"
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fi
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get_bls_value() {
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local bls="$1" && shift
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local key="$1" && shift
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echo "$(grep "^${key}[ \t]" "${bls}" | sed -e "s!^${key}[ \t]*!!")"
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}
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set_bls_value() {
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local bls="$1" && shift
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local key="$1" && shift
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local value="$1" && shift
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value=$(echo $value | sed -e 's/\//\\\//g')
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sed -i -e "s/^${key}.*/${key} ${value}/" "${bls}"
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}
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append_bls_value() {
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local bls="$1" && shift
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local key="$1" && shift
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local value="$1" && shift
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old_value="$(get_bls_value "${bls}" ${key})"
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set_bls_value "${bls}" "${key}" "${old_value}${value}"
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}
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get_bls_values() {
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count=0
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local -a files
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local IFS=$'\n'
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files=($(for bls in ${blsdir}/*.conf ; do
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if ! [[ -e "${bls}" ]] ; then
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continue
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fi
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bls="${bls%.conf}"
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bls="${bls##*/}"
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echo "${bls}"
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done | /usr/libexec/grubby/rpm-sort -c rpmnvrcmp | tac)) || :
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for bls in "${files[@]}" ; do
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blspath="${blsdir}/${bls}.conf"
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bls_file[$count]="${blspath}"
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bls_title[$count]="$(get_bls_value ${blspath} title)"
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bls_version[$count]="$(get_bls_value ${blspath} version)"
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bls_linux[$count]="$(get_bls_value ${blspath} linux)"
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bls_initrd[$count]="$(get_bls_value ${blspath} initrd)"
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bls_options[$count]="$(get_bls_value ${blspath} options)"
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bls_id[$count]="${bls}"
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count=$((count+1))
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done
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}
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get_default_index() {
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local default=""
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local index="-1"
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local title=""
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local version=""
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if [[ $bootloader = "grub2" ]]; then
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default="$(grep '^saved_entry=' ${env} | sed -e 's/^saved_entry=//')"
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else
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default="$(grep '^default=' ${zipl_config} | sed -e 's/^default=//')"
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fi
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if [[ -z $default ]]; then
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index=0
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elif [[ $default =~ ^[0-9]+$ ]]; then
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index="$default"
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fi
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for i in ${!bls_file[@]}; do
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if [[ $i -eq $index ]]; then
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echo $i
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return
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fi
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if [[ $default = ${bls_id[$i]} || $default = ${bls_title[$i]} ]]; then
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echo $i
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return
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fi
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done
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}
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display_default_value() {
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local prefix=$(get_prefix)
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case "$display_default" in
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kernel)
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echo "${prefix}${bls_linux[$default_index]}"
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exit 0
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;;
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index)
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echo "$default_index"
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exit 0
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;;
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title)
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echo "${bls_title[$default_index]}"
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exit 0
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;;
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esac
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}
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param_to_indexes() {
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local param="$1"
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local indexes=""
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if [[ $param = "ALL" ]]; then
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for i in ${!bls_file[@]}; do
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indexes="$indexes $i"
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done
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echo -n $indexes
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return
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fi
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if [[ $param = "DEFAULT" ]]; then
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echo -n $default_index
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return
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fi
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for i in ${!bls_file[@]}; do
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if [[ $param = "${bls_linux[$i]}" || "/${param##*/}" = "${bls_linux[$i]}" ]]; then
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indexes="$indexes $i"
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fi
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if [[ $param = "TITLE=${bls_title[$i]}" ]]; then
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indexes="$indexes $i"
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fi
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if [[ $param = $i ]]; then
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indexes="$indexes $i"
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fi
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done
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if [[ -n $indexes ]]; then
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echo -n $indexes
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return
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fi
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echo -n "-1"
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}
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get_prefix() {
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if [[ $bootloader = grub2 ]] && grep -q /boot /proc/mounts; then
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echo "/boot"
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else
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echo ""
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fi
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}
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expand_var() {
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local var=$1
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if [[ $bootloader == "grub2" ]]; then
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local value="$(grub2-editenv "${env}" list | grep ${var##$} | sed -e "s/${var##$}=//")"
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value="$(echo ${value} | sed -e 's/\//\\\//g')"
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if [[ -n $value ]]; then
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var="$value"
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fi
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fi
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echo $var
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}
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has_kernelopts()
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{
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local args=${bls_options[$1]}
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local opts=(${args})
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for opt in ${opts[*]}; do
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[[ $opt = "\$kernelopts" ]] && return 0
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done
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return 1
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}
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get_bls_args() {
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local args=${bls_options[$1]}
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local opts=(${args})
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for opt in ${opts[*]}; do
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if [[ $opt =~ ^\$ ]]; then
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value="$(expand_var $opt)"
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args="$(echo ${args} | sed -e "s/${opt}/${value}/")"
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fi
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done
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echo ${args}
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}
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display_info_values() {
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local indexes=($(param_to_indexes "$1"))
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local prefix=$(get_prefix)
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if [[ $indexes = "-1" ]]; then
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print_error "The param $1 is incorrect"
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fi
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for i in ${indexes[*]}; do
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local root=""
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local value=""
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local args="$(get_bls_args "$i")"
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local opts=(${args})
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for opt in ${opts[*]}; do
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if echo $opt | grep -q "^root="; then
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root="$(echo $opt | sed -e 's/root=//')"
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value="$(echo ${opt} | sed -e 's/\//\\\//g')"
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args="$(echo ${args} | sed -e "s/${value}[ \t]*//")"
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break
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fi
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done
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echo "index=$i"
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echo "kernel=\"${prefix}${bls_linux[$i]}\""
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echo "args=\"${args}\""
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if [[ -n $root ]]; then
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echo "root=\"${root}\""
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fi
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echo "initrd=\"${prefix}${bls_initrd[$i]}\""
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echo "title=\"${bls_title[$i]}\""
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echo "id=\"${bls_id[$i]}\""
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done
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exit 0
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}
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mkbls() {
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local kernel=$1 && shift
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local kernelver=$1 && shift
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local datetime=$1 && shift
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local debugname=""
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local flavor=""
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local prefix=""
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if [[ $(get_prefix) = "" ]]; then
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prefix="/boot"
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fi
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if [[ $kernelver == *\+* ]] ; then
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local flavor=-"${kernelver##*+}"
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if [[ $flavor == "-debug" ]]; then
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local debugname="with debugging"
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local debugid="-debug"
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fi
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fi
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cat <<EOF
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title ${NAME} (${kernelver}) ${VERSION}${debugname}
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version ${kernelver}${debugid}
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linux ${kernel}
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initrd ${prefix}/initramfs-${kernelver}.img
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options \$kernelopts
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id ${ID}-${datetime}-${kernelver}${debugid}
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grub_users \$grub_users
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grub_arg --unrestricted
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grub_class kernel${flavor}
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EOF
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}
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unset_default_bls()
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{
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if [[ $bootloader = grub2 ]]; then
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grub2-editenv "${env}" unset saved_entry
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else
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sed -i -e "/^default=.*/d" "${zipl_config}"
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fi
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}
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remove_bls_fragment() {
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local indexes=($(param_to_indexes "$1"))
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if [[ $indexes = "-1" ]]; then
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print_error "The param $(get_prefix)$1 is incorrect"
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fi
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for i in "${indexes[@]}"; do
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if [[ $default_index = $i ]]; then
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unset_default_bls
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fi
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rm -f "${bls_file[$i]}"
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done
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get_bls_values
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update_grubcfg
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}
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get_custom_bls_filename() {
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local kernelver=$1
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local bls_target="${blsdir}/${MACHINE_ID}-${kernelver}.conf"
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count=0
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local -a files
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local IFS=$'\n'
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prefix="${bls_target%%.conf}"
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prefix="${bls_target%%${arch}}"
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prefix="${prefix%.*}"
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last=($(for bls in ${prefix}.*~custom*.conf ; do
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if ! [[ -e "${bls}" ]] ; then
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continue
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fi
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bls="${bls##${prefix}.}"
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bls="${bls%%~custom*}"
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echo "${bls}"
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done | tail -n1)) || :
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if [[ -z $last ]]; then
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last="0"
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else
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last=$((last+1))
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fi
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echo "${bls_target}" | sed -e "s!${prefix}!${prefix}.${last}~custom!"
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}
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add_bls_fragment() {
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local kernel="$1" && shift
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local title="$1" && shift
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local options="$1" && shift
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local initrd="$1" && shift
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local extra_initrd="$1" && shift
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if [[ $kernel = *"vmlinuz-"* ]]; then
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kernelver="${kernel##*/vmlinuz-}"
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prefix="vmlinuz-"
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else
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kernelver="${kernel##*/}"
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fi
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if [[ ! -f "/boot/${prefix}${kernelver}" ]] &&
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[[ $bad_image != "true" ]]; then
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print_error "The ${kernelver} kernel isn't installed in the machine"
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fi
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if [[ -z $title ]]; then
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print_error "The kernel title must be specified"
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fi
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if [[ ! -d $blsdir ]]; then
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install -m 700 -d "${blsdir}"
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fi
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bls_target="${blsdir}/${MACHINE_ID}-${kernelver}.conf"
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if [[ -e ${bls_target} ]]; then
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bls_target="$(get_custom_bls_filename "${kernelver}")"
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print_info "An entry for kernel ${kernelver} already exists, adding ${bls_target}"
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fi
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kernel_dir="/lib/modules/${kernelver}"
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if [[ -d $kernel_dir ]]; then
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datetime="$(date -u +%Y%m%d%H%M%S -d "$(stat -c '%y' "${kernel_dir}")")"
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else
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datetime=0
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fi
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mkbls "${kernel}" "${kernelver}" "${datetime}" > "${bls_target}"
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if [[ -n $title ]]; then
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set_bls_value "${bls_target}" "title" "${title}"
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fi
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if [[ -n $options ]]; then
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set_bls_value "${bls_target}" "options" "${options}"
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fi
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if [[ -n $initrd ]]; then
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set_bls_value "${bls_target}" "initrd" "${initrd}"
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fi
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if [[ -n $extra_initrd ]]; then
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append_bls_value "${bls_target}" "initrd" "${extra_initrd}"
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fi
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if [[ $MAKEDEBUG = "yes" ]]; then
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bls_debug="$(echo ${bls_target} | sed -e "s/${kernelver}/${kernelver}~debug/")"
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cp -aT "${bls_target}" "${bls_debug}"
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append_bls_value "${bls_debug}" "title" "${LINUX_DEBUG_TITLE_POSTFIX}"
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append_bls_value "${bls_debug}" "version" "${LINUX_DEBUG_VERSION_POSTFIX}"
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append_bls_value "${bls_debug}" "options" "${CMDLINE_LINUX_DEBUG}"
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blsid="$(get_bls_value ${bls_debug} "id" | sed -e "s/${kernelver}/${kernelver}~debug/")"
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set_bls_value "${bls_debug}" "id" "${blsid}"
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fi
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get_bls_values
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if [[ $make_default = "true" ]]; then
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set_default_bls "TITLE=${title}"
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fi
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update_grubcfg
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exit 0
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}
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update_args() {
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local args=$1 && shift
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local remove_args=($1) && shift
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local add_args=($1) && shift
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for arg in ${remove_args[*]}; do
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if [[ $arg = *"="* ]]; then
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arg=$(echo $arg | sed -e 's/\//\\\//g')
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args="$(echo $args | sed -E "s/(^|[[:space:]])$arg([[:space:]]|$)/ /")"
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else
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args="$(echo $args | sed -E "s/(^|[[:space:]])$arg(([[:space:]]|$)|([=][^ ]*([$]*)))/ /g")"
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fi
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done
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for arg in ${add_args[*]}; do
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arg=${arg%=*}
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args="$(echo $args | sed -E "s/(^|[[:space:]])$arg(([[:space:]]|$)|([=][^ ]*([$]*)))/ /g")"
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done
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for arg in ${add_args[*]}; do
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args="$args $arg"
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done
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echo ${args}
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}
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update_bls_fragment() {
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local param="$1"
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local indexes=($(param_to_indexes "$1")) && shift
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local remove_args=$1 && shift
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local add_args=$1 && shift
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local initrd=$1 && shift
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local opts
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if [[ $indexes = "-1" ]]; then
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print_error "The param $(get_prefix)${param} is incorrect"
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fi
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if [[ $param = "ALL" && $bootloader = grub2 ]] && [[ -n $remove_args || -n $add_args ]]; then
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local old_args="$(grub2-editenv "${env}" list | grep kernelopts | sed -e "s/kernelopts=//")"
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opts="$(update_args "${old_args}" "${remove_args}" "${add_args}")"
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grub2-editenv "${env}" set kernelopts="${opts}"
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elif [[ $bootloader = grub2 ]]; then
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opts="$(grub2-editenv "${env}" list | grep kernelopts | sed -e "s/kernelopts=//")"
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fi
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for i in ${indexes[*]}; do
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if [[ -n $remove_args || -n $add_args ]]; then
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local old_args="$(get_bls_args "$i")"
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local new_args="$(update_args "${old_args}" "${remove_args}" "${add_args}")"
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if [[ $param != "ALL" || ! "$(has_kernelopts "$i")" ]]; then
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set_bls_value "${bls_file[$i]}" "options" "${new_args}"
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fi
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if [[ $bootloader = grub2 && ! "$(has_kernelopts "$i")" && $opts = $new_args ]]; then
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set_bls_value "${bls_file[$i]}" "options" "\$kernelopts"
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fi
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fi
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if [[ -n $initrd ]]; then
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set_bls_value "${bls_file[$i]}" "initrd" "${initrd}"
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fi
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done
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update_grubcfg
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}
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set_default_bls() {
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local index=($(param_to_indexes "$1"))
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if [[ $index = "-1" ]]; then
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print_error "The param $1 is incorrect"
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fi
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if [[ $bootloader = grub2 ]]; then
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grub2-editenv "${env}" set saved_entry="${bls_id[$index]}"
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else
|
|
local default="${bls_title[$index]}"
|
|
local current="$(grep '^default=' ${zipl_config} | sed -e 's/^default=//')"
|
|
if [[ -n $current ]]; then
|
|
sed -i -e "s,^default=.*,default=${default}," "${zipl_config}"
|
|
else
|
|
echo "default=${default}" >> "${zipl_config}"
|
|
fi
|
|
fi
|
|
|
|
print_info "The default is ${bls_file[$index]} with index $index and kernel $(get_prefix)${bls_linux[$index]}"
|
|
}
|
|
|
|
remove_var_prefix() {
|
|
if [[ -n $remove_kernel && $remove_kernel =~ ^/ ]]; then
|
|
remove_kernel="/${remove_kernel##*/}"
|
|
fi
|
|
|
|
if [[ -n $initrd ]]; then
|
|
initrd="/${initrd##*/}"
|
|
fi
|
|
|
|
if [[ -n $extra_initrd ]]; then
|
|
extra_initrd=" /${extra_initrd##*/}"
|
|
fi
|
|
|
|
if [[ -n $kernel ]]; then
|
|
kernel="/${kernel##*/}"
|
|
fi
|
|
|
|
if [[ -n $update_kernel && $update_kernel =~ ^/ ]]; then
|
|
update_kernel="/${update_kernel##*/}"
|
|
fi
|
|
}
|
|
|
|
update_grubcfg()
|
|
{
|
|
if [[ $arch = 'ppc64' || $arch = 'ppc64le' ]]; then
|
|
grub2-mkconfig -o /boot/grub2/grub.cfg >& /dev/null
|
|
fi
|
|
}
|
|
|
|
print_usage()
|
|
{
|
|
cat <<EOF
|
|
Usage: grubby [OPTION...]
|
|
--add-kernel=kernel-path add an entry for the specified kernel
|
|
--args=args default arguments for the new kernel or new arguments for kernel being updated)
|
|
--bad-image-okay don't sanity check images in boot entries (for testing only)
|
|
-c, --config-file=path path to grub config file to update ("-" for stdin)
|
|
--copy-default use the default boot entry as a template for the new entry being added; if the default is not a linux image, or if the kernel referenced by the default image does not exist, the
|
|
first linux entry whose kernel does exist is used as the template
|
|
--default-kernel display the path of the default kernel
|
|
--default-index display the index of the default kernel
|
|
--default-title display the title of the default kernel
|
|
--env=path path for environment data
|
|
--grub2 configure grub2 bootloader
|
|
--info=kernel-path display boot information for specified kernel
|
|
--initrd=initrd-path initrd image for the new kernel
|
|
-i, --extra-initrd=initrd-path auxiliary initrd image for things other than the new kernel
|
|
--make-default make the newly added entry the default boot entry
|
|
-o, --output-file=path path to output updated config file ("-" for stdout)
|
|
--remove-args=STRING remove kernel arguments
|
|
--remove-kernel=kernel-path remove all entries for the specified kernel
|
|
--set-default=kernel-path make the first entry referencing the specified kernel the default
|
|
--set-default-index=entry-index make the given entry index the default entry
|
|
--title=entry-title title to use for the new kernel entry
|
|
--update-kernel=kernel-path updated information for the specified kernel
|
|
--zipl configure zipl bootloader
|
|
-b, --bls-directory path to directory containing the BootLoaderSpec fragment files
|
|
|
|
Help options:
|
|
-?, --help Show this help message
|
|
|
|
EOF
|
|
}
|
|
|
|
OPTS="$(getopt -o c:i:o:b:? --long help,add-kernel:,args:,bad-image-okay,\
|
|
config-file:,copy-default,default-kernel,default-index,default-title,env:,\
|
|
grub2,info:,initrd:,extra-initrd:,make-default,output-file:,remove-args:,\
|
|
remove-kernel:,set-default:,set-default-index:,title:,update-kernel:,zipl,\
|
|
bls-directory:,add-kernel:,add-multiboot:,mbargs:,mounts:,boot-filesystem:,\
|
|
bootloader-probe,debug,devtree,devtreedir:,elilo,efi,extlinux,grub,lilo,\
|
|
output-file:,remove-mbargs:,remove-multiboot:,silo,yaboot -n ${SCRIPTNAME} -- "$@")"
|
|
|
|
[[ $? = 0 ]] || exit 1
|
|
|
|
eval set -- "$OPTS"
|
|
|
|
while [ ${#} -gt 0 ]; do
|
|
case "$1" in
|
|
--help|-h)
|
|
print_usage
|
|
exit 0
|
|
;;
|
|
--add-kernel)
|
|
kernel="${2}"
|
|
shift
|
|
;;
|
|
--args)
|
|
args="${2}"
|
|
shift
|
|
;;
|
|
--bad-image-okay)
|
|
bad_image=true
|
|
;;
|
|
--config-file|-c)
|
|
zipl_config="${2}"
|
|
shift
|
|
;;
|
|
--copy-default)
|
|
copy_default=true
|
|
;;
|
|
--default-kernel)
|
|
display_default="kernel"
|
|
;;
|
|
--default-index)
|
|
display_default="index"
|
|
;;
|
|
--default-title)
|
|
display_default="title"
|
|
;;
|
|
--env)
|
|
env="${2}"
|
|
shift
|
|
;;
|
|
--grub2)
|
|
bootloader="grub2"
|
|
;;
|
|
--info)
|
|
display_info="${2}"
|
|
shift
|
|
;;
|
|
--initrd)
|
|
initrd="${2}"
|
|
shift
|
|
;;
|
|
--extra-initrd|-i)
|
|
extra_initrd=" /${2}"
|
|
shift
|
|
;;
|
|
--make-default)
|
|
make_default=true
|
|
;;
|
|
--output-file|-o)
|
|
output_file="${2}"
|
|
shift
|
|
;;
|
|
--remove-args)
|
|
remove_args="${2}"
|
|
shift
|
|
;;
|
|
--remove-kernel)
|
|
remove_kernel="${2}"
|
|
shift
|
|
;;
|
|
--set-default)
|
|
set_default="${2}"
|
|
shift
|
|
;;
|
|
--set-default-index)
|
|
set_default="${2}"
|
|
shift
|
|
;;
|
|
--title)
|
|
title="${2}"
|
|
shift
|
|
;;
|
|
--update-kernel)
|
|
update_kernel="${2}"
|
|
shift
|
|
;;
|
|
--zipl)
|
|
bootloader="zipl"
|
|
;;
|
|
--bls-directory|-b)
|
|
blsdir="${2}"
|
|
shift
|
|
;;
|
|
--add-kernel|--add-multiboot|--mbargs|--mounts|--boot-filesystem|\
|
|
--bootloader-probe|--debug|--devtree|--devtreedir|--elilo|--efi|\
|
|
--extlinux|--grub|--lilo|--output-file|--remove-mbargs|--silo|\
|
|
--remove-multiboot|--slilo|--yaboot)
|
|
echo
|
|
echo "${SCRIPTNAME}: the option \"${1}\" was deprecated" >&2
|
|
echo "Try '${SCRIPTNAME} --help' to list supported options" >&2
|
|
echo
|
|
exit 1
|
|
;;
|
|
--)
|
|
shift
|
|
break
|
|
;;
|
|
*)
|
|
echo
|
|
echo "${SCRIPTNAME}: invalid option \"${1}\"" >&2
|
|
echo "Try '${SCRIPTNAME} --help' for more information" >&2
|
|
echo
|
|
exit 1
|
|
;;
|
|
esac
|
|
shift
|
|
done
|
|
|
|
if [[ -z $update_kernel ]] && [[ -n $args || -n $remove_args ]]; then
|
|
print_error "no action specified"
|
|
fi
|
|
|
|
if [[ -z $blsdir ]]; then
|
|
blsdir="/boot/loader/entries"
|
|
fi
|
|
|
|
if [[ -z $env ]]; then
|
|
env="/boot/grub2/grubenv"
|
|
fi
|
|
|
|
if [[ -z $zipl_config ]]; then
|
|
zipl_config="/etc/zipl.conf"
|
|
fi
|
|
|
|
get_bls_values
|
|
|
|
default_index="$(get_default_index)"
|
|
|
|
if [[ -n $display_default ]]; then
|
|
display_default_value
|
|
fi
|
|
|
|
if [[ -n $display_info ]]; then
|
|
display_info_values "${display_info}"
|
|
fi
|
|
|
|
if [[ $(get_prefix) == "/boot" ]]; then
|
|
remove_var_prefix
|
|
fi
|
|
|
|
if [[ -n $kernel ]]; then
|
|
if [[ $copy_default = "true" ]]; then
|
|
opts="${bls_options[$default_index]}"
|
|
if [[ -n $args ]]; then
|
|
opts="${opts} ${args}"
|
|
fi
|
|
else
|
|
opts="${args}"
|
|
fi
|
|
|
|
add_bls_fragment "${kernel}" "${title}" "${opts}" "${initrd}" \
|
|
"${extra_initrd}"
|
|
fi
|
|
|
|
if [[ -n $remove_kernel ]]; then
|
|
remove_bls_fragment "${remove_kernel}"
|
|
fi
|
|
|
|
if [[ -n $update_kernel ]]; then
|
|
update_bls_fragment "${update_kernel}" "${remove_args}" "${args}" "${initrd}"
|
|
fi
|
|
|
|
if [[ -n $set_default ]]; then
|
|
set_default_bls "${set_default}"
|
|
fi
|
|
|
|
exit 0
|