798 строки
21 KiB
Bash
Executable File
798 строки
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 "${bls}"
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done | /usr/libexec/grubby/rpm-sort -c rpmnvrcmp 2>/dev/null | tac)) || :
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for bls in "${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 ]] && mountpoint -q /boot; 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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[[ $opt = "\$kernelopts" ]] && echo "true"
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done
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echo "false"
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}
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get_bls_args() {
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local args=${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 "$i")" = "false" ]]; then
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set_bls_value "${bls_file[$i]}" "options" "${new_args}"
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fi
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if [[ $bootloader = grub2 && "$(has_kernelopts "$i")" = "false" && $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
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local default="${bls_title[$index]}"
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local current="$(grep '^default=' ${zipl_config} | sed -e 's/^default=//')"
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if [[ -n $current ]]; then
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sed -i -e "s,^default=.*,default=${default}," "${zipl_config}"
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else
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echo "default=${default}" >> "${zipl_config}"
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fi
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fi
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print_info "The default is ${bls_file[$index]} with index $index and kernel $(get_prefix)${bls_linux[$index]}"
|
|
}
|
|
|
|
remove_var_prefix() {
|
|
local prefix="$1"
|
|
|
|
[ -z "${prefix}" ] && return
|
|
|
|
if [[ -n $remove_kernel && $remove_kernel =~ ^/ ]]; then
|
|
remove_kernel="/${remove_kernel##${prefix}/}"
|
|
fi
|
|
|
|
if [[ -n $initrd ]]; then
|
|
initrd="/${initrd##${prefix}/}"
|
|
fi
|
|
|
|
if [[ -n $extra_initrd ]]; then
|
|
extra_initrd=" /${extra_initrd##${prefix}/}"
|
|
fi
|
|
|
|
if [[ -n $kernel ]]; then
|
|
kernel="/${kernel##${prefix}/}"
|
|
fi
|
|
|
|
if [[ -n $update_kernel && $update_kernel =~ ^/ ]]; then
|
|
update_kernel="/${update_kernel##${prefix}/}"
|
|
fi
|
|
}
|
|
|
|
update_grubcfg()
|
|
{
|
|
if [[ $arch = 'ppc64' || $arch = 'ppc64le' ]]; then
|
|
grub2-mkconfig --no-grubenv-update -o "${grub_config}" >& /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
|
|
--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: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,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="${2}"
|
|
shift
|
|
;;
|
|
--bad-image-okay)
|
|
bad_image=true
|
|
;;
|
|
--config-file|-c)
|
|
grub_config="${2}"
|
|
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=" /${2}"
|
|
shift
|
|
;;
|
|
--make-default)
|
|
make_default=true
|
|
;;
|
|
--remove-args)
|
|
remove_args="${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 && -z $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
|
|
|
|
if [[ -z $grub_config ]]; then
|
|
grub_config="/boot/grub2/grub.cfg"
|
|
fi
|
|
|
|
get_bls_values
|
|
|
|
default_index="$(get_default_index)"
|
|
|
|
if [[ -n $display_default ]]; then
|
|
display_default_value
|
|
fi
|
|
|
|
if [[ -n $display_info ]]; then
|
|
display_info_values "${display_info}"
|
|
fi
|
|
|
|
remove_var_prefix "$(get_prefix)"
|
|
|
|
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
|