From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001

From: Peter Jones <pjones@redhat.com>

Date: Thu, 15 Mar 2018 14:12:40 -0400

Subject: [PATCH] Add grub2-switch-to-blscfg

Signed-off-by: Peter Jones <pjones@redhat.com>

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>

[jhlavac: Use ${etcdefaultgrub} instead of /etc/default/grub]

Signed-off-by: Jan Hlavac <jhlavac@redhat.com>

---

 Makefile.util.def             |   7 +

 util/grub-set-password.in     |   2 +-

 util/grub-switch-to-blscfg.8  |  33 +++++

 util/grub-switch-to-blscfg.in | 317 ++++++++++++++++++++++++++++++++++++++++++

 4 files changed, 358 insertions(+), 1 deletion(-)

 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 cdd2f51fe4..afc4d7b0c3 100644

--- a/Makefile.util.def

+++ b/Makefile.util.def

@@ -1364,6 +1364,13 @@ 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/util/grub-set-password.in b/util/grub-set-password.in

index 5ebf50576d..c0b5ebbfdc 100644

--- a/util/grub-set-password.in

+++ b/util/grub-set-password.in

@@ -1,6 +1,6 @@

 #!/bin/sh -e

-EFIDIR=$(grep ^ID= /etc/os-release | sed -e 's/^ID=//' -e 's/rhel/redhat/')

+EFIDIR=$(grep ^ID= /etc/os-release | sed -e 's/^ID=//' -e 's/rhel/redhat/' -e 's/\"//g')

 if [ -d /sys/firmware/efi/efivars/ ]; then

     grubdir=`echo "/@bootdirname@/efi/EFI/${EFIDIR}/" | sed 's,//*,/,g'`

 else

diff --git a/util/grub-switch-to-blscfg.8 b/util/grub-switch-to-blscfg.8

new file mode 100644

index 0000000000..9a88628297

--- /dev/null

+++ b/util/grub-switch-to-blscfg.8

@@ -0,0 +1,33 @@

+.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.

+

+.TP

+--bls-directory=\fIDIR\fR

+Create BootLoaderSpec fragments in \fIDIR\fR.  The default value is \fI/boot/loader/entries\fR.

+

+.TP

+--backup-suffix=\fSUFFIX\fR

+The suffix to use for saved backup files.  The default value is \fI.bak\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 0000000000..a851424beb

--- /dev/null

+++ b/util/grub-switch-to-blscfg.in

@@ -0,0 +1,317 @@

+#! /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 <http://www.gnu.org/licenses/>.

+

+#set -eu

+

+# Initialize some variables.

+prefix=@prefix@

+exec_prefix=@exec_prefix@

+sbindir=@sbindir@

+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_get_kernel_settings="${sbindir}/@grub_get_kernel_settings@"

+grub_editenv=${bindir}/@grub_editenv@

+etcdefaultgrub=/etc/default/grub

+

+eval "$("${grub_get_kernel_settings}")" || true

+

+EFIDIR=$(grep ^ID= /etc/os-release | sed -e 's/^ID=//' -e 's/rhel/redhat/' -e 's/\"//g')

+if [ -d /sys/firmware/efi/efivars/ ]; then

+    startlink=/etc/grub2-efi.cfg

+    grubdir=`echo "/@bootdirname@/efi/EFI/${EFIDIR}/" | sed 's,//*,/,g'`

+else

+    startlink=/etc/grub2.cfg

+    grubdir=`echo "/@bootdirname@/@grubdirname@" | sed 's,//*,/,g'`

+fi

+

+blsdir=`echo "/@bootdirname@/loader/entries" | sed 's,//*,/,g'`

+

+backupsuffix=.bak

+

+arch="$(uname -m)"

+

+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 <bug-grub@gnu.org>."; 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}" -o $# -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 kernelopts=$1 && shift

+

+    local debugname=""

+    local debugid=""

+    local flavor=""

+

+    if [ "$kernelver" == *\+* ] ; then

+        local flavor=-"${kernelver##*+}"

+        if [ "${flavor}" == "-debug" ]; then

+            local debugname=" with debugging"

+            local debugid="-debug"

+        fi

+    fi

+    (

+        source /etc/os-release

+

+        cat <

+title ${NAME} (${kernelver}) ${VERSION}${debugname}

+version ${kernelver}${debugid}

+linux /vmlinuz-${kernelver}

+initrd /initramfs-${kernelver}.img

+options ${kernelopts}

+grub_users \$grub_users

+grub_arg --unrestricted

+grub_class kernel${flavor}

+EOF

+    ) | cat

+}

+

+copy_bls() {

+    for kernelver in $(cd /lib/modules/ ; ls -1) "" ; do

+	bls_target="${blsdir}/${MACHINE_ID}-${kernelver}.conf"

+	linux="/vmlinuz-${kernelver}"

+	linux_path="/boot${linux}"

+	kernel_dir="/lib/modules/${kernelver}"

+

+	if [ ! -d "${kernel_dir}" ] ; then

+            continue

+	fi

+	if [ ! -f "${linux_path}" ]; then

+            continue

+	fi

+

+	linux_relpath="$("${grub_mkrelpath}" "${linux_path}")"

+	bootprefix="${linux_relpath%%"${linux}"}"

+	cmdline="root=${LINUX_ROOT_DEVICE} ro ${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}"

+

+	mkbls "${kernelver}" \

+	      "$(date -u +%Y%m%d%H%M%S -d "$(stat -c '%y' "${kernel_dir}")")" \

+	      "${bootprefix}" "${cmdline}" >"${bls_target}"

+

+	if [ "x$GRUB_LINUX_MAKE_DEBUG" = "xtrue" ]; then

+            bls_debug="$(echo ${bls_target} | sed -e "s/${kernelver}/${kernelver}~debug/")"

+            cp -aT  "${bls_target}" "${bls_debug}"

+            title="$(grep '^title[ \t]' "${bls_debug}" | sed -e 's/^title[ \t]*//')"

+            options="$(echo "${cmdline} ${GRUB_CMDLINE_LINUX_DEBUG}" | sed -e 's/\//\\\//g')"

+            sed -i -e "s/^title.*/title ${title}${GRUB_LINUX_DEBUG_TITLE_POSTFIX}/" "${bls_debug}"

+            sed -i -e "s/^options.*/options ${options}/" "${bls_debug}"

+	fi

+    done

+

+    if [ -f "/boot/vmlinuz-0-rescue-${MACHINE_ID}" ]; then

+	mkbls "0-rescue-${MACHINE_ID}" "0" "${bootprefix}" >"${blsdir}/${MACHINE_ID}-0-rescue.conf"

+    fi

+}

+

+# The grub2 EFI binary is not copied to the ESP as a part of an ostree

+# transaction. Make sure a grub2 version with BLS support is installed

+# but only do this if the blsdir is not set, to make sure that the BLS

+# parsing module will search for the BLS snippets in the default path.

+if test -f /run/ostree-booted && test -d /sys/firmware/efi/efivars && \

+   ! ${grub_editenv} - list | grep -q blsdir && \

+   mountpoint -q /boot; then

+    grub_binary="$(find /usr/lib/ostree-boot/efi/EFI/${EFIDIR}/ -name grub*.efi)"

+    install -m 700 ${grub_binary} ${grubdir} || exit 1

+    # Create a hidden file to indicate that grub2 now has BLS support.

+    touch /boot/grub2/.grub2-blscfg-supported

+fi

+

+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

+    copy_bls

+

+    if [ $arch = "x86_64" ] && [ ! -d /sys/firmware/efi ]; then

+	mod_dir="i386-pc"

+    elif [ $arch = "ppc64" -o $arch = "ppc64le" ] && [ ! -d /sys/firmware/opal ]; then

+	mod_dir="powerpc-ieee1275"

+    fi

+

+    if [ -n "${mod_dir}" ]; then

+	for mod in blscfg increment; do

+	    install -m 700 ${prefix}/lib/grub/${mod_dir}/${mod}.mod ${grubdir}/$mod_dir/ || exit 1

+	done

+    fi

+

+    cp -af "${GRUB_CONFIG_FILE}" "${GRUB_CONFIG_FILE}${backupsuffix}"

+    if ! grub2-mkconfig -o "${GRUB_CONFIG_FILE}" ; then

+        install -m 700 "${GRUB_CONFIG_FILE}${backupsuffix}" "${GRUB_CONFIG_FILE}"

+        sed -i"${backupsuffix}" \

+            -e 's,^GRUB_ENABLE_BLSCFG=.*,GRUB_ENABLE_BLSCFG=false,' \

+            "${etcdefaultgrub}"

+        gettext_printf "Updating %s failed\n" "${GRUB_CONFIG_FILE}"

+        exit 1

+    fi

+fi

+

+# Bye.

+exit 0