/usr/sbin/grub-mkconfig is in grub-common 1.99-21ubuntu3.19.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 | #! /bin/sh
set -e
# Generate grub.cfg by inspecting /boot contents.
# 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/>.
transform="s,x,x,"
prefix="/usr"
exec_prefix="${prefix}"
datarootdir="${prefix}/share"
prefix="/usr"
exec_prefix="${prefix}"
sbindir="${exec_prefix}/sbin"
bindir="${exec_prefix}/bin"
sysconfdir="/etc"
PACKAGE_NAME=GRUB
PACKAGE_VERSION=1.99-21ubuntu3.19
host_os=linux-gnu
datadir="${datarootdir}"
pkgdatadir="${datadir}/`echo grub | sed "${transform}"`"
grub_cfg=""
grub_mkconfig_dir="${sysconfdir}"/grub.d
self=`basename $0`
grub_probe="${sbindir}/`echo grub-probe | sed "${transform}"`"
grub_script_check="${bindir}/`echo grub-script-check | sed "${transform}"`"
GRUB_PREFIX=`echo '/boot/grub' | sed "s,//*,/,g"`
# Usage: usage
# Print the usage.
usage () {
cat <<EOF
Usage: $self [OPTION]
Generate a grub config file
-o, --output=FILE output generated config to FILE [default=stdout]
-h, --help print this message and exit
-v, --version print the version information and exit
Report bugs to <bug-grub@gnu.org>.
EOF
}
argument () {
opt=$1
shift
if test $# -eq 0; then
echo "$0: option requires an argument -- '$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 ;;
-o | --output)
grub_cfg=`argument $option "$@"`; shift;;
--output=*)
grub_cfg=`echo "$option" | sed 's/--output=//'`
;;
-*)
echo "Unrecognized option \`$option'" 1>&2
usage
exit 1
;;
# Explicitly ignore non-option arguments, for compatibility.
esac
done
. "${datadir}/grub/grub-mkconfig_lib"
if [ "x$EUID" = "x" ] ; then
EUID=`id -u`
fi
if [ "$EUID" != 0 ] ; then
root=f
case "`uname 2>/dev/null`" in
CYGWIN*)
# Cygwin: Assume root if member of admin group
for g in `id -G 2>/dev/null` ; do
case $g in
0|544) root=t ;;
esac
done ;;
esac
if [ $root != t ] ; then
echo "$self: You must run this as root" >&2
exit 1
fi
fi
set $grub_probe dummy
if test -f "$1"; then
:
else
echo "$1: Not found." 1>&2
exit 1
fi
mkdir -p ${GRUB_PREFIX}
# Device containing our userland. Typically used for root= parameter.
GRUB_DEVICE="`${grub_probe} --target=device /`"
GRUB_DEVICE_UUID="`${grub_probe} --device ${GRUB_DEVICE} --target=fs_uuid 2> /dev/null`" || true
# Device containing our /boot partition. Usually the same as GRUB_DEVICE.
GRUB_DEVICE_BOOT="`${grub_probe} --target=device /boot`"
GRUB_DEVICE_BOOT_UUID="`${grub_probe} --device ${GRUB_DEVICE_BOOT} --target=fs_uuid 2> /dev/null`" || true
# Filesystem for the device containing our userland. Used for stuff like
# choosing Hurd filesystem module.
GRUB_FS="`${grub_probe} --device ${GRUB_DEVICE} --target=fs 2> /dev/null || echo unknown`"
if test -f ${sysconfdir}/default/grub ; then
. ${sysconfdir}/default/grub
fi
for x in ${sysconfdir}/default/grub.d/*.cfg ; do
if [ -e "${x}" ]; then
. "${x}"
fi
done
# XXX: should this be deprecated at some point?
if [ "x${GRUB_TERMINAL}" != "x" ] ; then
GRUB_TERMINAL_INPUT="${GRUB_TERMINAL}"
GRUB_TERMINAL_OUTPUT="${GRUB_TERMINAL}"
fi
termoutdefault=0
if [ "x${GRUB_TERMINAL_OUTPUT}" = "x" ]; then
GRUB_TERMINAL_OUTPUT=gfxterm;
termoutdefault=1;
fi
for x in ${GRUB_TERMINAL_OUTPUT}; do
if [ "x${x}" = "xgfxterm" ]; then
if [ -n "$GRUB_FONT" ] ; then
if is_path_readable_by_grub ${GRUB_FONT} > /dev/null ; then
GRUB_FONT_PATH=${GRUB_FONT}
else
echo "No such font or not readable by grub: ${GRUB_FONT}" >&2
exit 1
fi
else
for dir in ${pkgdatadir} ${GRUB_PREFIX} /usr/share/grub ; do
for basename in unicode unifont ascii; do
path="${dir}/${basename}.pf2"
if is_path_readable_by_grub ${path} > /dev/null ; then
GRUB_FONT_PATH=${path}
else
continue
fi
if [ "${basename}" = "ascii" ] ; then
# make sure all our children behave in conformance with ascii..
export LANG=C
fi
break 2
done
done
fi
if [ -z "${GRUB_FONT_PATH}" ] ; then
if [ "x$termoutdefault" != "x1" ]; then
echo "No font for gfxterm found." >&2 ; exit 1
fi
GRUB_TERMINAL_OUTPUT=
fi
fi
done
for x in ${GRUB_TERMINAL_OUTPUT}; do
case "x${x}" in
xgfxterm) ;;
xconsole | xserial | xofconsole)
# make sure all our children behave in conformance with ascii..
export LANG=C;;
*) echo "Invalid output terminal \"${GRUB_TERMINAL_OUTPUT}\"" >&2 ; exit 1 ;;
esac
done
if [ "x${GRUB_RECOVERY_TITLE}" = "x" ]; then
GRUB_RECOVERY_TITLE="recovery mode"
fi
# These are defined in this script, export them here so that user can
# override them.
export GRUB_DEVICE \
GRUB_DEVICE_UUID \
GRUB_DEVICE_BOOT \
GRUB_DEVICE_BOOT_UUID \
GRUB_FS \
GRUB_FONT_PATH \
GRUB_PRELOAD_MODULES \
GRUB_PREFIX
# These are optional, user-defined variables.
export GRUB_DEFAULT \
GRUB_HIDDEN_TIMEOUT \
GRUB_HIDDEN_TIMEOUT_QUIET \
GRUB_TIMEOUT \
GRUB_TIMEOUT_STYLE \
GRUB_DEFAULT_BUTTON \
GRUB_HIDDEN_TIMEOUT_BUTTON \
GRUB_TIMEOUT_BUTTON \
GRUB_TIMEOUT_STYLE_BUTTON \
GRUB_BUTTON_CMOS_ADDRESS \
GRUB_BUTTON_CMOS_CLEAN \
GRUB_DISTRIBUTOR \
GRUB_CMDLINE_LINUX \
GRUB_CMDLINE_LINUX_DEFAULT \
GRUB_CMDLINE_XEN \
GRUB_CMDLINE_XEN_DEFAULT \
GRUB_CMDLINE_LINUX_XEN_REPLACE \
GRUB_CMDLINE_LINUX_XEN_REPLACE_DEFAULT \
GRUB_CMDLINE_NETBSD \
GRUB_CMDLINE_NETBSD_DEFAULT \
GRUB_CMDLINE_GNUMACH \
GRUB_TERMINAL_INPUT \
GRUB_TERMINAL_OUTPUT \
GRUB_SERIAL_COMMAND \
GRUB_DISABLE_LINUX_UUID \
GRUB_DISABLE_RECOVERY \
GRUB_VIDEO_BACKEND \
GRUB_GFXMODE \
GRUB_BACKGROUND \
GRUB_THEME \
GRUB_GFXPAYLOAD_LINUX \
GRUB_DISABLE_OS_PROBER \
GRUB_INIT_TUNE \
GRUB_SAVEDEFAULT \
GRUB_BADRAM \
GRUB_RECORDFAIL_TIMEOUT \
GRUB_RECOVERY_TITLE
if test "x${grub_cfg}" != "x"; then
rm -f ${grub_cfg}.new
exec > ${grub_cfg}.new
# Allow this to fail, since /boot/grub/ might need to be fatfs to support some
# firmware implementations (e.g. OFW or EFI).
chmod 400 ${grub_cfg}.new || grub_warn "Could not make ${grub_cfg}.new readable by only root.\
This means that if the generated config contains a password it is readable by everyone"
fi
echo "Generating grub.cfg ..." >&2
cat << EOF
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by $self using templates
# from ${grub_mkconfig_dir} and settings from ${sysconfdir}/default/grub
#
EOF
for i in ${grub_mkconfig_dir}/* ; do
case "$i" in
# emacsen backup files. FIXME: support other editors
*~) ;;
# emacsen autosave files. FIXME: support other editors
\#*\#) ;;
*)
if grub_file_is_not_garbage "$i" && test -x "$i" ; then
echo
echo "### BEGIN $i ###"
"$i"
echo "### END $i ###"
fi
;;
esac
done
if [ "x${grub_cfg}" != "x" ] && ! grep "^password " ${grub_cfg}.new >/dev/null; then
chmod 444 ${grub_cfg}.new || true
fi
if test "x${grub_cfg}" != "x" ; then
if ! ${grub_script_check} ${grub_cfg}.new; then
echo "Syntax errors are detected in generated GRUB config file." >&2
echo "Ensure that there are no errors in /etc/default/grub" >&2
echo "and /etc/grub.d/* files or please file a bug report with" >&2
echo "${grub_cfg}.new file attached." >&2
else
# none of the children aborted with error, install the new grub.cfg
mv -f ${grub_cfg}.new ${grub_cfg}
fi
fi
echo "done" >&2
|