From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Peter Jones Date: Thu, 15 Mar 2018 14:12:40 -0400 Subject: [PATCH] Add grub2-switch-to-blscfg Signed-off-by: Peter Jones --- Makefile.util.def | 7 ++ .gitignore | 2 + util/grub-switch-to-blscfg.8 | 25 ++++ util/grub-switch-to-blscfg.in | 262 ++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 296 insertions(+) create mode 100644 util/grub-switch-to-blscfg.8 create mode 100644 util/grub-switch-to-blscfg.in diff --git a/Makefile.util.def b/Makefile.util.def index 879e8eb98a4..f4fbd250630 100644 --- a/Makefile.util.def +++ b/Makefile.util.def @@ -1348,6 +1348,13 @@ program = { ldadd = '$(LIBINTL) $(LIBDEVMAPPER) $(LIBZFS) $(LIBNVPAIR) $(LIBGEOM)'; }; +script = { + name = grub-switch-to-blscfg; + common = util/grub-switch-to-blscfg.in; + mansection = 8; + installdir = sbin; +}; + program = { name = grub-glue-efi; mansection = 1; diff --git a/.gitignore b/.gitignore index 54795fa60be..42475592123 100644 --- a/.gitignore +++ b/.gitignore @@ -121,6 +121,8 @@ grub-*.tar.* /grub*-sparc64-setup.8 /grub*-syslinux2cfg /grub*-syslinux2cfg.1 +/grub*-switch-to-blscfg +/grub*-switch-to-blscfg.8 /grub_fstest.pp /grub_fstest_init.c /grub_fstest_init.lst diff --git a/util/grub-switch-to-blscfg.8 b/util/grub-switch-to-blscfg.8 new file mode 100644 index 00000000000..134dfc62a7b --- /dev/null +++ b/util/grub-switch-to-blscfg.8 @@ -0,0 +1,25 @@ +.TH GRUB-SWITCH-TO-BLSCFG 1 "Wed Feb 26 2014" +.SH NAME +\fBgrub-switch-to-blscfg\fR \(em Switch to using BLS config files. + +.SH SYNOPSIS +\fBgrub-switch-to-blscfg\fR [--grub-directory=\fIDIR\fR] [--config-file=\fIFILE\fR] [--grub-defaults=\fIFILE\fR] + +.SH DESCRIPTION +\fBgrub-switch-to-blscfg\fR reconfigures grub-mkconfig to use BLS-style config files, and then regenerates the GRUB configuration. + +.SH OPTIONS +.TP +--grub-directory=\fIDIR\fR +Search for grub.cfg under \fIDIR\fR. The default value is \fI/boot/efi/EFI/\fBVENDOR\fR on UEFI machines and \fI/boot/grub2\fR elsewhere. + +.TP +--config-file=\fIFILE\fR +The grub config file to use. The default value is \fI/etc/grub2-efi.cfg\fR on UEFI machines and \fI/etc/grub2.cfg\fR elsewhere. Symbolic links will be followed. + +.TP +--grub-defaults=\fIFILE\fR +The defaults file for grub-mkconfig. The default value is \fI/etc/default/grub\fR. + +.SH SEE ALSO +.BR "info grub" diff --git a/util/grub-switch-to-blscfg.in b/util/grub-switch-to-blscfg.in new file mode 100644 index 00000000000..3ae5e4ea8d0 --- /dev/null +++ b/util/grub-switch-to-blscfg.in @@ -0,0 +1,262 @@ +#! /bin/sh +# +# Set a default boot entry for GRUB. +# Copyright (C) 2004,2009 Free Software Foundation, Inc. +# +# GRUB is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# GRUB is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GRUB. If not, see . + +#set -eu + +# Initialize some variables. +prefix=@prefix@ +exec_prefix=@exec_prefix@ +bindir=@bindir@ +sysconfdir="@sysconfdir@" +PACKAGE_NAME=@PACKAGE_NAME@ +PACKAGE_VERSION=@PACKAGE_VERSION@ +datarootdir="@datarootdir@" +datadir="@datadir@" +if [ ! -v pkgdatadir ]; then + pkgdatadir="${datadir}/@PACKAGE@" +fi + +self=`basename $0` + +grub_editenv=${bindir}/@grub_editenv@ +etcdefaultgrub=/etc/default/grub + +EFIDIR=$(grep ^ID= /etc/os-release | sed -e 's/^ID=//' -e 's/rhel/redhat/') +if [ -d /sys/firmware/efi/efivars/ ]; then + startlink=/etc/grub2-efi.cfg + grubdir=`echo "/@bootdirname@/efi/EFI/${EFIDIR}/" | sed 's,//*,/,g'` + blsdir=`echo "/@bootdirname@/efi/EFI/${EFIDIR}/loader/entries" | sed 's,//*,/,g'` +else + startlink=/etc/grub2.cfg + grubdir=`echo "/@bootdirname@/@grubdirname@" | sed 's,//*,/,g'` + blsdir=`echo "/@bootdirname@" | sed 's,//*,/,g'` +fi + +backupsuffix=.bak + +export TEXTDOMAIN=@PACKAGE@ +export TEXTDOMAINDIR="@localedir@" + +. "${pkgdatadir}/grub-mkconfig_lib" + +# Usage: usage +# Print the usage. +usage () { + gettext_printf "Usage: %s\n" "$self" + gettext "Switch to BLS config files.\n"; echo + echo + print_option_help "-h, --help" "$(gettext "print this message and exit")" + print_option_help "-V, --version" "$(gettext "print the version information and exit")" + echo + print_option_help "--backup-suffix=$(gettext "SUFFIX")" "$backupsuffix" + print_option_help "--bls-directory=$(gettext "DIR")" "$blsdir" + print_option_help "--config-file=$(gettext "FILE")" "$startlink" + print_option_help "--grub-defaults=$(gettext "FILE")" "$etcdefaultgrub" + print_option_help "--grub-directory=$(gettext "DIR")" "$grubdir" + # echo + # gettext "Report bugs to ."; echo +} + +argument () { + opt=$1 + shift + + if test $# -eq 0; then + gettext_printf "%s: option requires an argument -- \`%s'\n" "$self" "$opt" 1>&2 + exit 1 + fi + echo $1 +} + +# Check the arguments. +while test $# -gt 0 +do + option=$1 + shift + + case "$option" in + -h | --help) + usage + exit 0 ;; + -V | --version) + echo "$self (${PACKAGE_NAME}) ${PACKAGE_VERSION}" + exit 0 ;; + + --backup-suffix) + backupsuffix=`argument $option "$@"` + shift + ;; + --backup-suffix=*) + backupsuffix=`echo "$option" | sed 's/--backup-suffix=//'` + ;; + + --bls-directory) + blsdir=`argument $option "$@"` + shift + ;; + --bls-directory=*) + blsdir=`echo "$option" | sed 's/--bls-directory=//'` + ;; + + --config-file) + startlink=`argument $option "$@"` + shift + ;; + --config-file=*) + startlink=`echo "$option" | sed 's/--config-file=//'` + ;; + + --grub-defaults) + etcdefaultgrub=`argument $option "$@"` + shift + ;; + --grub-defaults=*) + etcdefaultgrub=`echo "$option" | sed 's/--grub-defaults=//'` + ;; + + --grub-directory) + grubdir=`argument $option "$@"` + shift + ;; + --grub-directory=*) + grubdir=`echo "$option" | sed 's/--grub-directory=//'` + ;; + + *) + gettext_printf "Unrecognized option \`%s'\n" "$option" 1>&2 + usage + exit 1 + ;; + esac +done + +find_grub_cfg() { + local candidate="" + while [[ -e "${candidate}" || $# -gt 0 ]] + do + if [[ ! -e "${candidate}" ]] ; then + candidate="$1" + shift + fi + + if [[ -L "${candidate}" ]]; then + candidate="$(realpath "${candidate}")" + fi + + if [[ -f "${candidate}" ]]; then + export GRUB_CONFIG_FILE="${candidate}" + return 0 + fi + done + return 1 +} + +if ! find_grub_cfg ${startlink} ${grubdir}/grub.cfg ; then + gettext_printf "Couldn't find config file\n" 1>&2 + exit 1 +fi + +if [[ ! -d "${blsdir}" ]]; then + install -m 700 -d "${blsdir}" +fi + +if [[ -f /etc/machine-id ]]; then + MACHINE_ID=$(cat /etc/machine-id) +else + MACHINE_ID=$(dmesg | sha256sum) +fi + +mkbls() { + local kernelver=$1 && shift + local datetime=$1 && shift + + local debugname="" + local flavor="" + + if [[ "$kernelver" == *\+* ]] ; then + local flavor=-"${kernelver##*+}" + if [[ "${flavor}" == "-debug" ]]; then + local debugname=" with debugging" + fi + fi + ( + source /etc/os-release + + cat <"${bls_target}" + fi +done + +GENERATE=0 +if grep '^GRUB_ENABLE_BLSCFG=.*' "${etcdefaultgrub}" \ + | grep -vq '^GRUB_ENABLE_BLSCFG="*true"*\s*$' ; then + if ! sed -i"${backupsuffix}" \ + -e 's,^GRUB_ENABLE_BLSCFG=.*,GRUB_ENABLE_BLSCFG=true,' \ + "${etcdefaultgrub}" ; then + gettext_printf "Updating %s failed\n" "${etcdefaultgrub}" + exit 1 + fi + GENERATE=1 +elif ! grep -q '^GRUB_ENABLE_BLSCFG=.*' "${etcdefaultgrub}" ; then + if ! echo 'GRUB_ENABLE_BLSCFG=true' >> "${etcdefaultgrub}" ; then + gettext_printf "Updating %s failed\n" "${etcdefaultgrub}" + exit 1 + fi + GENERATE=1 +fi + +if [[ "${GENERATE}" -eq 1 ]] ; then + cp -af "${GRUB_CONFIG_FILE}" "${GRUB_CONFIG_FILE}${backupsuffix}" + if ! grub2-mkconfig -o "${GRUB_CONFIG_FILE}" ; then + cp -af "${GRUB_CONFIG_FILE}${backupsuffix}" "${GRUB_CONFIG_FILE}" + sed -i"${backupsuffix}" \ + -e 's,^GRUB_ENABLE_BLSCFG=.*,GRUB_ENABLE_BLSCFG=false,' \ + /etc/default/grub + gettext_printf "Updating %s failed\n" "${GRUB_CONFIG_FILE}" + exit 1 + fi +fi + +# Bye. +exit 0