util/grub-mkconfig.in

   1 #! /bin/sh
   2 set -e
   3
   4 # Generate grub.cfg by inspecting /boot contents.
   5 # Copyright (C) 2006,2007,2008,2009,2010 Free Software Foundation, Inc.
   6 #
   7 # GRUB is free software: you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation, either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # GRUB is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 transform="@program_transform_name@"
  21 prefix="@prefix@"
  22 exec_prefix="@exec_prefix@"
  23 datarootdir="@datarootdir@"
  24
  25 prefix="@prefix@"
  26 exec_prefix="@exec_prefix@"
  27 sbindir="@sbindir@"
  28 bindir="@bindir@"
  29 sysconfdir="@sysconfdir@"
  30 PACKAGE_NAME=@PACKAGE_NAME@
  31 PACKAGE_VERSION=@PACKAGE_VERSION@
  32 host_os=@host_os@
  33 datadir="@datadir@"
  34 if [ "x$pkgdatadir" = x ]; then
  35     pkgdatadir="${datadir}/`echo @PACKAGE_TARNAME@ | sed "${transform}"`"
  36 fi
  37 grub_cfg=""
  38 grub_mkconfig_dir="${sysconfdir}"/grub.d
  39
  40 self=`basename $0`
  41
  42 grub_probe="${sbindir}/`echo grub-probe | sed "${transform}"`"
  43 grub_script_check="${bindir}/`echo grub-script-check | sed "${transform}"`"
  44
  45 GRUB_PREFIX=`echo '/@bootdirname@/@grubdirname@' | sed "s,//*,/,g"`
  46
  47 . "${pkgdatadir}/grub-mkconfig_lib"
  48
  49 # Usage: usage
  50 # Print the usage.
  51 usage () {
  52     gettext_printf "Usage: %s [OPTION]\n" "$self"
  53     gettext "Generate a grub config file"; echo
  54     echo
  55     printf "  -o, --output=%-11s%s\n" "$(gettext FILE)" "$(gettext "output generated config to FILE [default=stdout]")"
  56     printf "  -h, --help              %s\n" "$(gettext "print this message and exit")"
  57     printf "  -v, --version           %s\n" "$(gettext "print the version information and exit")"
  58     echo
  59     gettext "Report bugs to <bug-grub@gnu.org>."; echo
  60 }
  61
  62 argument () {
  63   opt=$1
  64   shift
  65
  66   if test $# -eq 0; then
  67       gettext_printf "%s: option requires an argument -- '%s'" "$0" "$opt" 1>&2
  68       exit 1
  69   fi
  70   echo $1
  71 }
  72
  73 # Check the arguments.
  74 while test $# -gt 0
  75 do
  76     option=$1
  77     shift
  78
  79     case "$option" in
  80     -h | --help)
  81         usage
  82         exit 0 ;;
  83     -v | --version)
  84         echo "$self (${PACKAGE_NAME}) ${PACKAGE_VERSION}"
  85         exit 0 ;;
  86     -o | --output)
  87         grub_cfg=`argument $option "$@"`; shift;;
  88     --output=*)
  89         grub_cfg=`echo "$option" | sed 's/--output=//'`
  90         ;;
  91     -*)
  92         gettext_printf "Unrecognized option \`%s'\n" "$option" 1>&2
  93         usage
  94         exit 1
  95         ;;
  96     # Explicitly ignore non-option arguments, for compatibility.
  97     esac
  98 done
  99
 100 if [ "x$EUID" = "x" ] ; then
 101   EUID=`id -u`
 102 fi
 103
 104 if [ "$EUID" != 0 ] ; then
 105   root=f
 106   case "`uname 2>/dev/null`" in
 107     CYGWIN*)
 108       # Cygwin: Assume root if member of admin group
 109       for g in `id -G 2>/dev/null` ; do
 110         case $g in
 111           0|544) root=t ;;
 112         esac
 113       done ;;
 114   esac
 115   if [ $root != t ] ; then
 116     gettext_printf "%s: You must run this as root\n" "$self" >&2
 117     exit 1
 118   fi
 119 fi
 120
 121 set $grub_probe dummy
 122 if test -f "$1"; then
 123     :
 124 else
 125     gettext_print "%s: Not found.\n" "$1" 1>&2
 126     exit 1
 127 fi
 128
 129 mkdir -p ${GRUB_PREFIX}
 130
 131 # Device containing our userland.  Typically used for root= parameter.
 132 GRUB_DEVICE="`${grub_probe} --target=device /`"
 133 GRUB_DEVICE_UUID="`${grub_probe} --device ${GRUB_DEVICE} --target=fs_uuid 2> /dev/null`" || true
 134
 135 # Device containing our /boot partition.  Usually the same as GRUB_DEVICE.
 136 GRUB_DEVICE_BOOT="`${grub_probe} --target=device /boot`"
 137 GRUB_DEVICE_BOOT_UUID="`${grub_probe} --device ${GRUB_DEVICE_BOOT} --target=fs_uuid 2> /dev/null`" || true
 138
 139 # Filesystem for the device containing our userland.  Used for stuff like
 140 # choosing Hurd filesystem module.
 141 GRUB_FS="`${grub_probe} --device ${GRUB_DEVICE} --target=fs 2> /dev/null || echo unknown`"
 142
 143 if test -f ${sysconfdir}/default/grub ; then
 144   . ${sysconfdir}/default/grub
 145 fi
 146
 147 # XXX: should this be deprecated at some point?
 148 if [ "x${GRUB_TERMINAL}" != "x" ] ; then
 149   GRUB_TERMINAL_INPUT="${GRUB_TERMINAL}"
 150   GRUB_TERMINAL_OUTPUT="${GRUB_TERMINAL}"
 151 fi
 152
 153 termoutdefault=0
 154 if [ "x${GRUB_TERMINAL_OUTPUT}" = "x" ]; then
 155     GRUB_TERMINAL_OUTPUT=gfxterm;
 156     termoutdefault=1;
 157 fi
 158
 159 for x in ${GRUB_TERMINAL_OUTPUT}; do
 160     if [ "x${x}" = "xgfxterm" ]; then
 161         if [ -n "$GRUB_FONT" ] ; then
 162             if is_path_readable_by_grub ${GRUB_FONT} > /dev/null ; then
 163                 GRUB_FONT_PATH=${GRUB_FONT}
 164             else
 165                 echo "No such font or not readable by grub: ${GRUB_FONT}" >&2
 166                 exit 1
 167             fi
 168         else
 169             for dir in ${pkgdatadir} ${GRUB_PREFIX} /usr/share/grub ; do
 170                 for basename in unicode unifont ascii; do
 171                     path="${dir}/${basename}.pf2"
 172                     if is_path_readable_by_grub ${path} > /dev/null ; then
 173                         GRUB_FONT_PATH=${path}
 174                     else
 175                         continue
 176                     fi
 177                     if [ "${basename}" = "ascii" ] ; then
 178                         # make sure all our children behave in conformance with ascii..
 179                         export LANG=C
 180                     fi
 181                     break 2
 182                 done
 183             done
 184         fi
 185         if [ -z "${GRUB_FONT_PATH}" ] ; then
 186             if [ "x$termoutdefault" != "x1" ]; then
 187                 gettext "No font for video terminal found." >&2; echo >&2 ; exit 1
 188             fi
 189             GRUB_TERMINAL_OUTPUT=
 190         fi
 191     fi
 192 done
 193
 194 for x in ${GRUB_TERMINAL_OUTPUT}; do
 195     case "x${x}" in
 196         xgfxterm) ;;
 197         xconsole | xserial | xofconsole)
 198             # make sure all our children behave in conformance with ascii..
 199             export LANG=C;;
 200         *) echo "Invalid output terminal \"${GRUB_TERMINAL_OUTPUT}\"" >&2 ; exit 1 ;;
 201     esac
 202 done
 203
 204 # These are defined in this script, export them here so that user can
 205 # override them.
 206 export GRUB_DEVICE \
 207   GRUB_DEVICE_UUID \
 208   GRUB_DEVICE_BOOT \
 209   GRUB_DEVICE_BOOT_UUID \
 210   GRUB_FS \
 211   GRUB_FONT_PATH \
 212   GRUB_PRELOAD_MODULES \
 213   GRUB_PREFIX
 214
 215 # These are optional, user-defined variables.
 216 export GRUB_DEFAULT \
 217   GRUB_HIDDEN_TIMEOUT \
 218   GRUB_HIDDEN_TIMEOUT_QUIET \
 219   GRUB_TIMEOUT \
 220   GRUB_DEFAULT_BUTTON \
 221   GRUB_HIDDEN_TIMEOUT_BUTTON \
 222   GRUB_TIMEOUT_BUTTON \
 223   GRUB_BUTTON_CMOS_ADDRESS \
 224   GRUB_BUTTON_CMOS_CLEAN \
 225   GRUB_DISTRIBUTOR \
 226   GRUB_CMDLINE_LINUX \
 227   GRUB_CMDLINE_LINUX_DEFAULT \
 228   GRUB_CMDLINE_XEN \
 229   GRUB_CMDLINE_XEN_DEFAULT \
 230   GRUB_CMDLINE_LINUX_XEN_REPLACE \
 231   GRUB_CMDLINE_LINUX_XEN_REPLACE_DEFAULT \
 232   GRUB_CMDLINE_NETBSD \
 233   GRUB_CMDLINE_NETBSD_DEFAULT \
 234   GRUB_TERMINAL_INPUT \
 235   GRUB_TERMINAL_OUTPUT \
 236   GRUB_SERIAL_COMMAND \
 237   GRUB_DISABLE_LINUX_UUID \
 238   GRUB_DISABLE_RECOVERY \
 239   GRUB_VIDEO_BACKEND \
 240   GRUB_GFXMODE \
 241   GRUB_BACKGROUND \
 242   GRUB_THEME \
 243   GRUB_GFXPAYLOAD_LINUX \
 244   GRUB_DISABLE_OS_PROBER \
 245   GRUB_INIT_TUNE \
 246   GRUB_SAVEDEFAULT \
 247   GRUB_ENABLE_CRYPTODISK \
 248   GRUB_BADRAM
 249
 250 if test "x${grub_cfg}" != "x"; then
 251   rm -f "${grub_cfg}.new"
 252   oldumask=$(umask); umask 077
 253   exec > "${grub_cfg}.new"
 254   umask $oldumask
 255 fi
 256 gettext "Generating grub.cfg ..." >&2
 257 echo >&2
 258
 259 cat << EOF
 260 #
 261 # DO NOT EDIT THIS FILE
 262 #
 263 # It is automatically generated by $self using templates
 264 # from ${grub_mkconfig_dir} and settings from ${sysconfdir}/default/grub
 265 #
 266 EOF
 267
 268 for i in ${grub_mkconfig_dir}/* ; do
 269   case "$i" in
 270     # emacsen backup files. FIXME: support other editors
 271     *~) ;;
 272     # emacsen autosave files. FIXME: support other editors
 273     \#*\#) ;;
 274     *)
 275       if grub_file_is_not_garbage "$i" && test -x "$i" ; then
 276         echo
 277         echo "### BEGIN $i ###"
 278         "$i"
 279         echo "### END $i ###"
 280       fi
 281     ;;
 282   esac
 283 done
 284
 285 if test "x${grub_cfg}" != "x" ; then
 286   if ! ${grub_script_check} ${grub_cfg}.new; then
 287     gettext_printf "Syntax errors are detected in generated GRUB config file.
 288 Ensure that there are no errors in /etc/default/grub
 289 and /etc/grub.d/* files or please file a bug report with
 290 %s file attached." "${grub_cfg}.new" >&2
 291   else
 292     # none of the children aborted with error, install the new grub.cfg
 293     mv -f ${grub_cfg}.new ${grub_cfg}
 294   fi
 295 fi
 296
 297 gettext "done" >&2
 298 echo >&2