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}/@PACKAGE@"
  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 "${transform}"`"
  44
  45 . "${pkgdatadir}/grub-mkconfig_lib"
  46
  47 # Usage: usage
  48 # Print the usage.
  49 usage () {
  50     gettext_printf "Usage: %s [OPTION]\n" "$self"
  51     gettext "Generate a grub config file"; echo
  52     echo
  53     printf "  -o, --output=%-11s%s\n" "$(gettext FILE)" "$(gettext "output generated config to FILE [default=stdout]")"
  54     printf "  -h, --help              %s\n" "$(gettext "print this message and exit")"
  55     printf "  -v, --version           %s\n" "$(gettext "print the version information and exit")"
  56     echo
  57     gettext "Report bugs to <bug-grub@gnu.org>."; echo
  58 }
  59
  60 argument () {
  61   opt=$1
  62   shift
  63
  64   if test $# -eq 0; then
  65       gettext_printf "%s: option requires an argument -- '%s'" "$0" "$opt" 1>&2
  66       exit 1
  67   fi
  68   echo $1
  69 }
  70
  71 # Check the arguments.
  72 while test $# -gt 0
  73 do
  74     option=$1
  75     shift
  76
  77     case "$option" in
  78     -h | --help)
  79         usage
  80         exit 0 ;;
  81     -v | --version)
  82         echo "$self (${PACKAGE_NAME}) ${PACKAGE_VERSION}"
  83         exit 0 ;;
  84     -o | --output)
  85         grub_cfg=`argument $option "$@"`; shift;;
  86     --output=*)
  87         grub_cfg=`echo "$option" | sed 's/--output=//'`
  88         ;;
  89     -*)
  90         gettext_printf "Unrecognized option \`%s'\n" "$option" 1>&2
  91         usage
  92         exit 1
  93         ;;
  94     # Explicitly ignore non-option arguments, for compatibility.
  95     esac
  96 done
  97
  98 if [ "x$EUID" = "x" ] ; then
  99   EUID=`id -u`
 100 fi
 101
 102 if [ "$EUID" != 0 ] ; then
 103   root=f
 104   case "`uname 2>/dev/null`" in
 105     CYGWIN*)
 106       # Cygwin: Assume root if member of admin group
 107       for g in `id -G 2>/dev/null` ; do
 108         case $g in
 109           0|544) root=t ;;
 110         esac
 111       done ;;
 112   esac
 113   if [ $root != t ] ; then
 114     gettext_printf "%s: You must run this as root\n" "$self" >&2
 115     exit 1
 116   fi
 117 fi
 118
 119 set $grub_probe dummy
 120 if test -f "$1"; then
 121     :
 122 else
 123     gettext_print "%s: Not found.\n" "$1" 1>&2
 124     exit 1
 125 fi
 126
 127 # Device containing our userland.  Typically used for root= parameter.
 128 GRUB_DEVICE="`${grub_probe} --target=device /`"
 129 GRUB_DEVICE_UUID="`${grub_probe} --device ${GRUB_DEVICE} --target=fs_uuid 2> /dev/null`" || true
 130
 131 # Device containing our /boot partition.  Usually the same as GRUB_DEVICE.
 132 GRUB_DEVICE_BOOT="`${grub_probe} --target=device /boot`"
 133 GRUB_DEVICE_BOOT_UUID="`${grub_probe} --device ${GRUB_DEVICE_BOOT} --target=fs_uuid 2> /dev/null`" || true
 134
 135 # Filesystem for the device containing our userland.  Used for stuff like
 136 # choosing Hurd filesystem module.
 137 GRUB_FS="`${grub_probe} --device ${GRUB_DEVICE} --target=fs 2> /dev/null || echo unknown`"
 138
 139 if test -f ${sysconfdir}/default/grub ; then
 140   . ${sysconfdir}/default/grub
 141 fi
 142
 143 # XXX: should this be deprecated at some point?
 144 if [ "x${GRUB_TERMINAL}" != "x" ] ; then
 145   GRUB_TERMINAL_INPUT="${GRUB_TERMINAL}"
 146   GRUB_TERMINAL_OUTPUT="${GRUB_TERMINAL}"
 147 fi
 148
 149 termoutdefault=0
 150 if [ "x${GRUB_TERMINAL_OUTPUT}" = "x" ]; then
 151     GRUB_TERMINAL_OUTPUT=gfxterm;
 152     termoutdefault=1;
 153 fi
 154
 155 for x in ${GRUB_TERMINAL_OUTPUT}; do
 156     case "x${x}" in
 157         xgfxterm) ;;
 158         xconsole | xserial | xofconsole)
 159             # make sure all our children behave in conformance with ascii..
 160             export LANG=C;;
 161         *) echo "Invalid output terminal \"${GRUB_TERMINAL_OUTPUT}\"" >&2 ; exit 1 ;;
 162     esac
 163 done
 164
 165 # These are defined in this script, export them here so that user can
 166 # override them.
 167 export GRUB_DEVICE \
 168   GRUB_DEVICE_UUID \
 169   GRUB_DEVICE_BOOT \
 170   GRUB_DEVICE_BOOT_UUID \
 171   GRUB_FS \
 172   GRUB_FONT \
 173   GRUB_PRELOAD_MODULES
 174
 175 # These are optional, user-defined variables.
 176 export GRUB_DEFAULT \
 177   GRUB_HIDDEN_TIMEOUT \
 178   GRUB_HIDDEN_TIMEOUT_QUIET \
 179   GRUB_TIMEOUT \
 180   GRUB_DEFAULT_BUTTON \
 181   GRUB_HIDDEN_TIMEOUT_BUTTON \
 182   GRUB_TIMEOUT_BUTTON \
 183   GRUB_BUTTON_CMOS_ADDRESS \
 184   GRUB_BUTTON_CMOS_CLEAN \
 185   GRUB_DISTRIBUTOR \
 186   GRUB_CMDLINE_LINUX \
 187   GRUB_CMDLINE_LINUX_DEFAULT \
 188   GRUB_CMDLINE_XEN \
 189   GRUB_CMDLINE_XEN_DEFAULT \
 190   GRUB_CMDLINE_LINUX_XEN_REPLACE \
 191   GRUB_CMDLINE_LINUX_XEN_REPLACE_DEFAULT \
 192   GRUB_CMDLINE_NETBSD \
 193   GRUB_CMDLINE_NETBSD_DEFAULT \
 194   GRUB_CMDLINE_GNUMACH \
 195   GRUB_TERMINAL_INPUT \
 196   GRUB_TERMINAL_OUTPUT \
 197   GRUB_SERIAL_COMMAND \
 198   GRUB_DISABLE_LINUX_UUID \
 199   GRUB_DISABLE_RECOVERY \
 200   GRUB_VIDEO_BACKEND \
 201   GRUB_GFXMODE \
 202   GRUB_BACKGROUND \
 203   GRUB_THEME \
 204   GRUB_GFXPAYLOAD_LINUX \
 205   GRUB_DISABLE_OS_PROBER \
 206   GRUB_INIT_TUNE \
 207   GRUB_SAVEDEFAULT \
 208   GRUB_ENABLE_CRYPTODISK \
 209   GRUB_BADRAM
 210
 211 if test "x${grub_cfg}" != "x"; then
 212   rm -f "${grub_cfg}.new"
 213   oldumask=$(umask); umask 077
 214   exec > "${grub_cfg}.new"
 215   umask $oldumask
 216 fi
 217 gettext "Generating grub.cfg ..." >&2
 218 echo >&2
 219
 220 cat << EOF
 221 #
 222 # DO NOT EDIT THIS FILE
 223 #
 224 # It is automatically generated by $self using templates
 225 # from ${grub_mkconfig_dir} and settings from ${sysconfdir}/default/grub
 226 #
 227 EOF
 228
 229 for i in ${grub_mkconfig_dir}/* ; do
 230   case "$i" in
 231     # emacsen backup files. FIXME: support other editors
 232     *~) ;;
 233     # emacsen autosave files. FIXME: support other editors
 234     \#*\#) ;;
 235     *)
 236       if grub_file_is_not_garbage "$i" && test -x "$i" ; then
 237         echo
 238         echo "### BEGIN $i ###"
 239         "$i"
 240         echo "### END $i ###"
 241       fi
 242     ;;
 243   esac
 244 done
 245
 246 if test "x${grub_cfg}" != "x" ; then
 247   if ! ${grub_script_check} ${grub_cfg}.new; then
 248     gettext_printf "Syntax errors are detected in generated GRUB config file.
 249 Ensure that there are no errors in /etc/default/grub
 250 and /etc/grub.d/* files or please file a bug report with
 251 %s file attached." "${grub_cfg}.new" >&2
 252   else
 253     # none of the children aborted with error, install the new grub.cfg
 254     mv -f ${grub_cfg}.new ${grub_cfg}
 255   fi
 256 fi
 257
 258 gettext "done" >&2
 259 echo >&2