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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Javier Martinez Canillas <javierm@redhat.com>
Date: Wed, 3 Oct 2018 20:48:32 +0200
Subject: [PATCH] add 10_linux_bls grub.d snippet to generate menu entries from
BLS files
This grub.d snippet can be used on platforms where the bootloader doesn't
have BLS support and only can parse a normal grub configuration file.
Portions of this script were taken from the ostree-grub-generator script
included in the OSTree project.
Resolves: rhbz#1636013
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
---
Makefile.util.def | 7 +
util/grub.d/10_linux_bls.in | 440 ++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 447 insertions(+)
create mode 100644 util/grub.d/10_linux_bls.in
diff --git a/Makefile.util.def b/Makefile.util.def
index cba4d5001..08cc98ddb 100644
--- a/Makefile.util.def
+++ b/Makefile.util.def
@@ -502,6 +502,13 @@ script = {
condition = COND_HOST_LINUX;
};
+script = {
+ name = '10_linux_bls';
+ common = util/grub.d/10_linux_bls.in;
+ installdir = grubconf;
+ condition = COND_HOST_LINUX;
+};
+
script = {
name = '10_xnu';
common = util/grub.d/10_xnu.in;
diff --git a/util/grub.d/10_linux_bls.in b/util/grub.d/10_linux_bls.in
new file mode 100644
index 000000000..3cc7803c6
--- /dev/null
+++ b/util/grub.d/10_linux_bls.in
@@ -0,0 +1,440 @@
+#! /bin/sh
+set -e
+
+# grub-mkconfig helper script.
+# Copyright (C) 2006,2007,2008,2009,2010 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/>.
+
+prefix="@prefix@"
+exec_prefix="@exec_prefix@"
+datarootdir="@datarootdir@"
+
+. "$pkgdatadir/grub-mkconfig_lib"
+
+export TEXTDOMAIN=@PACKAGE@
+export TEXTDOMAINDIR="@localedir@"
+
+CLASS="--class gnu-linux --class gnu --class os --unrestricted"
+
+if [ "x${GRUB_DISTRIBUTOR}" = "x" ] ; then
+ OS="$(eval $(grep PRETTY_NAME /etc/os-release) ; echo ${PRETTY_NAME})"
+ CLASS="--class $(eval $(grep '^ID_LIKE=\|^ID=' /etc/os-release) ; [ -n "${ID_LIKE}" ] && echo ${ID_LIKE} || echo ${ID}) ${CLASS}"
+else
+ OS="${GRUB_DISTRIBUTOR}"
+ CLASS="--class $(echo ${GRUB_DISTRIBUTOR} | tr 'A-Z' 'a-z' | cut -d' ' -f1|LC_ALL=C sed 's,[^[:alnum:]_],_,g') ${CLASS}"
+fi
+
+# loop-AES arranges things so that /dev/loop/X can be our root device, but
+# the initrds that Linux uses don't like that.
+case ${GRUB_DEVICE} in
+ /dev/loop/*|/dev/loop[0-9])
+ GRUB_DEVICE=`losetup ${GRUB_DEVICE} | sed -e "s/^[^(]*(\([^)]\+\)).*/\1/"`
+ ;;
+esac
+
+# Default to disabling partition uuid support to maintian compatibility with
+# older kernels.
+GRUB_DISABLE_LINUX_PARTUUID=${GRUB_DISABLE_LINUX_PARTUUID-true}
+
+# btrfs may reside on multiple devices. We cannot pass them as value of root= parameter
+# and mounting btrfs requires user space scanning, so force UUID in this case.
+if ( [ "x${GRUB_DEVICE_UUID}" = "x" ] && [ "x${GRUB_DEVICE_PARTUUID}" = "x" ] ) \
+ || ( [ "x${GRUB_DISABLE_LINUX_UUID}" = "xtrue" ] \
+ && [ "x${GRUB_DISABLE_LINUX_PARTUUID}" = "xtrue" ] ) \
+ || ( ! test -e "/dev/disk/by-uuid/${GRUB_DEVICE_UUID}" \
+ && ! test -e "/dev/disk/by-partuuid/${GRUB_DEVICE_PARTUUID}" ) \
+ || ( test -e "${GRUB_DEVICE}" && uses_abstraction "${GRUB_DEVICE}" lvm ); then
+ LINUX_ROOT_DEVICE=${GRUB_DEVICE}
+elif [ "x${GRUB_DEVICE_UUID}" = "x" ] \
+ || [ "x${GRUB_DISABLE_LINUX_UUID}" = "xtrue" ]; then
+ LINUX_ROOT_DEVICE=PARTUUID=${GRUB_DEVICE_PARTUUID}
+else
+ LINUX_ROOT_DEVICE=UUID=${GRUB_DEVICE_UUID}
+fi
+
+case x"$GRUB_FS" in
+ xbtrfs)
+ if [ "x${SUSE_BTRFS_SNAPSHOT_BOOTING}" = "xtrue" ]; then
+ GRUB_CMDLINE_LINUX="${GRUB_CMDLINE_LINUX} \${extra_cmdline}"
+ else
+ rootsubvol="`make_system_path_relative_to_its_root /`"
+ rootsubvol="${rootsubvol#/}"
+ if [ "x${rootsubvol}" != x ]; then
+ GRUB_CMDLINE_LINUX="rootflags=subvol=${rootsubvol} ${GRUB_CMDLINE_LINUX}"
+ fi
+ fi;;
+ xzfs)
+ rpool=`${grub_probe} --device ${GRUB_DEVICE} --target=fs_label 2>/dev/null || true`
+ bootfs="`make_system_path_relative_to_its_root / | sed -e "s,@$,,"`"
+ LINUX_ROOT_DEVICE="ZFS=${rpool}${bootfs}"
+ ;;
+esac
+
+mktitle ()
+{
+ local title_type
+ local version
+ local OS_NAME
+ local OS_VERS
+
+ title_type=$1 && shift
+ version=$1 && shift
+
+ OS_NAME="$(eval $(grep ^NAME= /etc/os-release) ; echo ${NAME})"
+ OS_VERS="$(eval $(grep ^VERSION= /etc/os-release) ; echo ${VERSION})"
+
+ case $title_type in
+ recovery)
+ title=$(printf '%s (%s) %s (recovery mode)' \
+ "${OS_NAME}" "${version}" "${OS_VERS}")
+ ;;
+ *)
+ title=$(printf '%s (%s) %s' \
+ "${OS_NAME}" "${version}" "${OS_VERS}")
+ ;;
+ esac
+ echo -n ${title}
+}
+
+title_correction_code=
+
+populate_header_warn()
+{
+cat <<EOF
+
+# This section was generated by a script. Do not modify the generated file - all changes
+# will be lost the next time file is regenerated. Instead edit the BootLoaderSpec files.
+
+EOF
+}
+
+read_config()
+{
+ config_file=${1}
+ title=""
+ initrd=""
+ options=""
+ linux=""
+
+ while read -r line
+ do
+ record=$(echo ${line} | cut -f 1 -d ' ')
+ value=$(echo ${line} | cut -s -f2- -d ' ')
+ case "${record}" in
+ "title")
+ title=${value}
+ ;;
+ "initrd")
+ initrd=${value}
+ ;;
+ "linux")
+ linux=${value}
+ ;;
+ "options")
+ options=${value}
+ ;;
+ esac
+ done < ${config_file}
+}
+
+populate_menu()
+{
+ entries_path="/boot/loader/entries"
+ gettext_printf "Generating boot entries from BLS files...\n" >&2
+ for config in $(ls -v -r $entries_path/*.conf); do
+ read_config ${config}
+ menu="${menu}menuentry '${title}' {\n"
+ menu="${menu}\t linux ${linux} ${options}\n"
+ if [ -n "${initrd}" ] ; then
+ menu="${menu}\t initrd ${boot_prefix}${initrd}\n"
+ fi
+ menu="${menu}}\n\n"
+ done
+ # The printf command seems to be more reliable across shells for special character (\n, \t) evaluation
+ printf "$menu"
+}
+
+linux_entry ()
+{
+ os="$1"
+ version="$2"
+ type="$3"
+ isdebug="$4"
+ args="$5"
+
+ if [ -z "$boot_device_id" ]; then
+ boot_device_id="$(grub_get_device_id "${GRUB_DEVICE}")"
+ fi
+
+ if [ "x${GRUB_ENABLE_BLSCFG}" = "xtrue" ]; then
+ if [ x$dirname = x/ ]; then
+ if [ -z "${prepare_root_cache}" ]; then
+ prepare_grub_to_access_device ${GRUB_DEVICE}
+ fi
+ else
+ if [ -z "${prepare_boot_cache}" ]; then
+ prepare_grub_to_access_device ${GRUB_DEVICE_BOOT}
+ fi
+ fi
+
+ if [ -d /sys/firmware/efi ]; then
+ bootefi_device="`${grub_probe} --target=device /boot/efi/`"
+ prepare_grub_to_access_device ${bootefi_device} boot
+ else
+ boot_device="`${grub_probe} --target=device /boot/`"
+ prepare_grub_to_access_device ${boot_device} boot
+ fi
+
+ populate_header_warn
+ populate_menu
+
+ ${grub_editenv} - set saved_entry=0
+ ${grub_editenv} - set kernelopts="root=${linux_root_device_thisversion} ro ${args}"
+
+ exit 0
+ fi
+
+ if [ x$type != xsimple ] ; then
+ title=$(mktitle "$type" "$version")
+ if [ x"$title" = x"$GRUB_ACTUAL_DEFAULT" ] || [ x"Previous Linux versions>$title" = x"$GRUB_ACTUAL_DEFAULT" ]; then
+ replacement_title="$(echo "Advanced options for ${OS}" | sed 's,>,>>,g')>$(echo "$title" | sed 's,>,>>,g')"
+ quoted="$(echo "$GRUB_ACTUAL_DEFAULT" | grub_quote)"
+ title_correction_code="${title_correction_code}if [ \"x\$default\" = '$quoted' ]; then default='$(echo "$replacement_title" | grub_quote)'; fi;"
+ fi
+ if [ x$isdebug = xdebug ]; then
+ title="$title${GRUB_LINUX_DEBUG_TITLE_POSTFIX}"
+ fi
+ echo "menuentry '$(echo "$title" | grub_quote)' ${CLASS} \$menuentry_id_option 'gnulinux-$version-$type-$boot_device_id' {" | sed "s/^/$submenu_indentation/"
+ else
+ echo "menuentry '$(echo "$os" | grub_quote)' ${CLASS} \$menuentry_id_option 'gnulinux-simple-$boot_device_id' {" | sed "s/^/$submenu_indentation/"
+ fi
+ if [ x$type != xrecovery ] ; then
+ save_default_entry | grub_add_tab
+ fi
+
+ # Use ELILO's generic "efifb" when it's known to be available.
+ # FIXME: We need an interface to select vesafb in case efifb can't be used.
+ if [ "x$GRUB_GFXPAYLOAD_LINUX" = x ]; then
+ echo " load_video" | sed "s/^/$submenu_indentation/"
+ if grep -qx "CONFIG_FB_EFI=y" "${config}" 2> /dev/null \
+ && grep -qx "CONFIG_VT_HW_CONSOLE_BINDING=y" "${config}" 2> /dev/null; then
+ echo " set gfxpayload=keep" | sed "s/^/$submenu_indentation/"
+ fi
+ else
+ if [ "x$GRUB_GFXPAYLOAD_LINUX" != xtext ]; then
+ echo " load_video" | sed "s/^/$submenu_indentation/"
+ fi
+ echo " set gfxpayload=$GRUB_GFXPAYLOAD_LINUX" | sed "s/^/$submenu_indentation/"
+ fi
+
+ echo " insmod gzio" | sed "s/^/$submenu_indentation/"
+
+ if [ x$dirname = x/ ]; then
+ if [ -z "${prepare_root_cache}" ]; then
+ prepare_root_cache="$(prepare_grub_to_access_device ${GRUB_DEVICE} | grub_add_tab)"
+ fi
+ printf '%s\n' "${prepare_root_cache}" | sed "s/^/$submenu_indentation/"
+ else
+ if [ -z "${prepare_boot_cache}" ]; then
+ prepare_boot_cache="$(prepare_grub_to_access_device ${GRUB_DEVICE_BOOT} | grub_add_tab)"
+ fi
+ printf '%s\n' "${prepare_boot_cache}" | sed "s/^/$submenu_indentation/"
+ fi
+ sed "s/^/$submenu_indentation/" << EOF
+ linux ${rel_dirname}/${basename} root=${linux_root_device_thisversion} ro ${args}
+EOF
+ if test -n "${initrd}" ; then
+ initrd_path=
+ for i in ${initrd}; do
+ initrd_path="${initrd_path} ${rel_dirname}/${i}"
+ done
+ sed "s/^/$submenu_indentation/" << EOF
+ initrd $(echo $initrd_path)
+EOF
+ fi
+ if test -n "${fdt}" ; then
+ sed "s/^/$submenu_indentation/" << EOF
+ devicetree ${rel_dirname}/${fdt}
+EOF
+ fi
+ sed "s/^/$submenu_indentation/" << EOF
+}
+EOF
+}
+
+machine=`uname -m`
+case "x$machine" in
+ xi?86 | xx86_64)
+ list=
+ for i in /boot/vmlinuz-* /vmlinuz-* /boot/kernel-* ; do
+ if grub_file_is_not_garbage "$i" ; then list="$list $i" ; fi
+ done ;;
+ *)
+ list=
+ for i in /boot/vmlinuz-* /boot/vmlinux-* /vmlinuz-* /vmlinux-* /boot/kernel-* ; do
+ if grub_file_is_not_garbage "$i" ; then list="$list $i" ; fi
+ done ;;
+esac
+
+if [ "x${GRUB_ENABLE_BLSCFG}" = "xtrue" ]; then
+ for i in /boot/ostree/*/vmlinuz-* ; do
+ if grub_file_is_not_garbage "$i" ; then list="$list $i" ; fi
+ done
+fi
+
+case "$machine" in
+ i?86) GENKERNEL_ARCH="x86" ;;
+ mips|mips64) GENKERNEL_ARCH="mips" ;;
+ mipsel|mips64el) GENKERNEL_ARCH="mipsel" ;;
+ arm*) GENKERNEL_ARCH="arm" ;;
+ *) GENKERNEL_ARCH="$machine" ;;
+esac
+
+prepare_boot_cache=
+prepare_root_cache=
+boot_device_id=
+title_correction_code=
+
+# Extra indentation to add to menu entries in a submenu. We're not in a submenu
+# yet, so it's empty. In a submenu it will be equal to '\t' (one tab).
+submenu_indentation=""
+
+is_top_level=true
+while [ "x$list" != "x" ] ; do
+ linux=`version_find_latest $list`
+ if [ "x${GRUB_ENABLE_BLSCFG}" != "xtrue" ]; then
+ gettext_printf "Found linux image: %s\n" "$linux" >&2
+ fi
+
+ basename=`basename $linux`
+ dirname=`dirname $linux`
+ rel_dirname=`make_system_path_relative_to_its_root $dirname`
+ version=`echo $basename | sed -e "s,^[^0-9]*-,,g"`
+ alt_version=`echo $version | sed -e "s,\.old$,,g"`
+ linux_root_device_thisversion="${LINUX_ROOT_DEVICE}"
+
+ initrd_early=
+ for i in ${GRUB_EARLY_INITRD_LINUX_STOCK} \
+ ${GRUB_EARLY_INITRD_LINUX_CUSTOM}; do
+ if test -e "${dirname}/${i}" ; then
+ initrd_early="${initrd_early} ${i}"
+ fi
+ done
+
+ initrd_real=
+ for i in "initrd.img-${version}" "initrd-${version}.img" "initrd-${version}.gz" \
+ "initrd-${version}" "initramfs-${version}.img" \
+ "initrd.img-${alt_version}" "initrd-${alt_version}.img" \
+ "initrd-${alt_version}" "initramfs-${alt_version}.img" \
+ "initramfs-genkernel-${version}" \
+ "initramfs-genkernel-${alt_version}" \
+ "initramfs-genkernel-${GENKERNEL_ARCH}-${version}" \
+ "initramfs-genkernel-${GENKERNEL_ARCH}-${alt_version}"; do
+ if test -e "${dirname}/${i}" ; then
+ initrd_real="${i}"
+ break
+ fi
+ done
+
+ initrd=
+ if test -n "${initrd_early}" || test -n "${initrd_real}"; then
+ initrd="${initrd_early} ${initrd_real}"
+
+ initrd_display=
+ for i in ${initrd}; do
+ initrd_display="${initrd_display} ${dirname}/${i}"
+ done
+ if [ "x${GRUB_ENABLE_BLSCFG}" != "xtrue" ]; then
+ gettext_printf "Found initrd image: %s\n" "$(echo $initrd_display)" >&2
+ fi
+ fi
+
+ fdt=
+ for i in "dtb-${version}" "dtb-${alt_version}"; do
+ if test -f "${dirname}/${i}/${GRUB_DEFAULT_DTB}" ; then
+ fdt="${i}/${GRUB_DEFAULT_DTB}"
+ break
+ fi
+ done
+
+ config=
+ for i in "${dirname}/config-${version}" "${dirname}/config-${alt_version}" "/etc/kernels/kernel-config-${version}" ; do
+ if test -e "${i}" ; then
+ config="${i}"
+ break
+ fi
+ done
+
+ initramfs=
+ if test -n "${config}" ; then
+ initramfs=`grep CONFIG_INITRAMFS_SOURCE= "${config}" | cut -f2 -d= | tr -d \"`
+ fi
+
+ if test -z "${initramfs}" && test -z "${initrd_real}" ; then
+ # "UUID=" and "ZFS=" magic is parsed by initrd or initramfs. Since there's
+ # no initrd or builtin initramfs, it can't work here.
+ if [ "x${GRUB_DEVICE_PARTUUID}" = "x" ] \
+ || [ "x${GRUB_DISABLE_LINUX_PARTUUID}" = "xtrue" ]; then
+
+ linux_root_device_thisversion=${GRUB_DEVICE}
+ else
+ linux_root_device_thisversion=PARTUUID=${GRUB_DEVICE_PARTUUID}
+ fi
+ fi
+
+ if [ "x${GRUB_DISABLE_SUBMENU}" = "xyes" ] || [ "x${GRUB_DISABLE_SUBMENU}" = "xy" ]; then
+ GRUB_DISABLE_SUBMENU="true"
+ fi
+
+ if [ "x$is_top_level" = xtrue ] && [ "x${GRUB_DISABLE_SUBMENU}" != xtrue ]; then
+ linux_entry "${OS}" "${version}" simple standard \
+ "${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}"
+ if [ "x$GRUB_LINUX_MAKE_DEBUG" = "xtrue" ]; then
+ linux_entry "${OS}" "${version}" simple debug \
+ "${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT} ${GRUB_CMDLINE_LINUX_DEBUG}"
+ fi
+
+ submenu_indentation="$grub_tab"
+
+ if [ -z "$boot_device_id" ]; then
+ boot_device_id="$(grub_get_device_id "${GRUB_DEVICE}")"
+ fi
+ # TRANSLATORS: %s is replaced with an OS name
+ echo "submenu '$(gettext_printf "Advanced options for %s" "${OS}" | grub_quote)' \$menuentry_id_option 'gnulinux-advanced-$boot_device_id' {"
+ is_top_level=false
+ fi
+
+ linux_entry "${OS}" "${version}" advanced standard \
+ "${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}"
+ if [ "x$GRUB_LINUX_MAKE_DEBUG" = "xtrue" ]; then
+ linux_entry "${OS}" "${version}" advanced debug \
+ "${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT} ${GRUB_CMDLINE_LINUX_DEBUG}"
+ fi
+
+ if [ "x${GRUB_DISABLE_RECOVERY}" != "xtrue" ]; then
+ linux_entry "${OS}" "${version}" recovery standard \
+ "single ${GRUB_CMDLINE_LINUX}"
+ fi
+
+ list=`echo $list | tr ' ' '\n' | fgrep -vx "$linux" | tr '\n' ' '`
+done
+
+# If at least one kernel was found, then we need to
+# add a closing '}' for the submenu command.
+if [ x"$is_top_level" != xtrue ]; then
+ echo '}'
+fi
+
+echo "$title_correction_code"
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