util/grub-mkconfig.in

   1 #! /bin/sh -e
   2
   3 # Generate grub.cfg by inspecting /boot contents.
   4 # Copyright (C) 2006,2007,2008,2009 Free Software Foundation, Inc.
   5 #
   6 # GRUB is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # GRUB is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 transform="@program_transform_name@"
  20
  21 prefix=@prefix@
  22 exec_prefix=@exec_prefix@
  23 sbindir=@sbindir@
  24 libdir=@libdir@
  25 sysconfdir=@sysconfdir@
  26 grub_prefix=`echo /boot/grub | sed ${transform}`
  27 grub_cfg=""
  28 grub_mkconfig_dir=${sysconfdir}/grub.d
  29
  30 grub_mkdevicemap=${sbindir}/`echo grub-mkdevicemap | sed ${transform}`
  31 grub_probe=${sbindir}/`echo grub-probe | sed ${transform}`
  32
  33 # Usage: usage
  34 # Print the usage.
  35 usage () {
  36     cat <<EOF
  37 Usage: $0 [OPTION]
  38 Generate a grub config file
  39
  40   -o, --output=FILE       output generated config to FILE [default=stdout]
  41   -h, --help              print this message and exit
  42   -v, --version           print the version information and exit
  43
  44 Report bugs to <bug-grub@gnu.org>.
  45 EOF
  46 }
  47
  48 # Check the arguments.
  49 for option in "$@"; do
  50     case "$option" in
  51     -h | --help)
  52         usage
  53         exit 0 ;;
  54     -v | --version)
  55         echo "$0 (GNU GRUB ${PACKAGE_VERSION})"
  56         exit 0 ;;
  57     -o)
  58         shift
  59         grub_cfg=$1
  60         ;;
  61     --output=*)
  62         grub_cfg=`echo "$option" | sed 's/--output=//'`
  63         ;;
  64     -*)
  65         echo "Unrecognized option \`$option'" 1>&2
  66         usage
  67         exit 1
  68         ;;
  69     esac
  70 done
  71
  72 . ${libdir}/grub/grub-mkconfig_lib
  73
  74 if [ "x$EUID" = "x" ] ; then
  75   EUID=`id -u`
  76 fi
  77
  78 if [ "$EUID" != 0 ] ; then
  79   root=f
  80   case "`uname 2>/dev/null`" in
  81     CYGWIN*)
  82       # Cygwin: Assume root if member of admin group
  83       for g in `id -G 2>/dev/null` ; do
  84         case $g in
  85           0|544) root=t ;;
  86         esac
  87       done ;;
  88   esac
  89   if [ $root != t ] ; then
  90     echo "$0: You must run this as root" >&2
  91     exit 1
  92   fi
  93 fi
  94
  95 set $grub_mkdevicemap dummy
  96 if test -f "$1"; then
  97     :
  98 else
  99     echo "$1: Not found." 1>&2
 100     exit 1
 101 fi
 102
 103 set $grub_probe dummy
 104 if test -f "$1"; then
 105     :
 106 else
 107     echo "$1: Not found." 1>&2
 108     exit 1
 109 fi
 110
 111 mkdir -p ${grub_prefix}
 112
 113 if test -e ${grub_prefix}/device.map ; then : ; else
 114   ${grub_mkdevicemap}
 115 fi
 116
 117 # Device containing our userland.  Typically used for root= parameter.
 118 GRUB_DEVICE="`${grub_probe} --target=device /`"
 119 GRUB_DEVICE_UUID="`${grub_probe} --device ${GRUB_DEVICE} --target=fs_uuid 2> /dev/null`" || true
 120
 121 # Device containing our /boot partition.  Usually the same as GRUB_DEVICE.
 122 GRUB_DEVICE_BOOT="`${grub_probe} --target=device /boot`"
 123 GRUB_DEVICE_BOOT_UUID="`${grub_probe} --device ${GRUB_DEVICE_BOOT} --target=fs_uuid 2> /dev/null`" || true
 124
 125 # Filesystem for the device containing our userland.  Used for stuff like
 126 # choosing Hurd filesystem module.
 127 GRUB_FS="`${grub_probe} --target=fs / 2> /dev/null || echo unknown`"
 128
 129 if test -f ${sysconfdir}/default/grub ; then
 130   . ${sysconfdir}/default/grub
 131 fi
 132
 133 # XXX: should this be deprecated at some point?
 134 if [ "x${GRUB_TERMINAL}" != "x" ] ; then
 135   GRUB_TERMINAL_INPUT="${GRUB_TERMINAL}"
 136   GRUB_TERMINAL_OUTPUT="${GRUB_TERMINAL}"
 137 fi
 138
 139 case x${GRUB_TERMINAL_OUTPUT} in
 140   x)
 141     # If this platform supports gfxterm, try to use it.
 142     if test -e ${grub_prefix}/gfxterm.mod ; then
 143       GRUB_TERMINAL_OUTPUT=gfxterm
 144     fi
 145   ;;
 146   xconsole | xserial | xofconsole | xgfxterm) ;;
 147   *) echo "Invalid output terminal \"${GRUB_TERMINAL_OUTPUT}\"" >&2 ; exit 1 ;;
 148 esac
 149
 150 # check for terminals that require fonts
 151 case ${GRUB_TERMINAL_OUTPUT} in
 152   gfxterm)
 153     if path=`font_path` ; then
 154       GRUB_FONT_PATH="${path}"
 155     else
 156       # fallback to the native terminal for this platform
 157       unset GRUB_TERMINAL_OUTPUT
 158     fi
 159   ;;
 160 esac
 161
 162 # does our terminal support utf-8 ?
 163 case ${GRUB_TERMINAL_OUTPUT} in
 164   gfxterm) ;;
 165   *)
 166     # make sure all our children behave in conformance with ascii..
 167     export LANG=C
 168   ;;
 169 esac
 170
 171 # These are defined in this script, export them here so that user can
 172 # override them.
 173 export GRUB_DEVICE GRUB_DEVICE_UUID GRUB_DEVICE_BOOT GRUB_DEVICE_BOOT_UUID GRUB_FS GRUB_FONT_PATH GRUB_PRELOAD_MODULES
 174
 175 # These are optional, user-defined variables.
 176 export GRUB_DEFAULT GRUB_TIMEOUT GRUB_DISTRIBUTOR GRUB_CMDLINE_LINUX GRUB_CMDLINE_LINUX_DEFAULT GRUB_TERMINAL_INPUT GRUB_TERMINAL_OUTPUT GRUB_SERIAL_COMMAND GRUB_DISABLE_LINUX_UUID GRUB_DISABLE_LINUX_RECOVERY GRUB_GFXMODE
 177
 178 if test "x${grub_cfg}" != "x"; then
 179   rm -f ${grub_cfg}.new
 180   exec > ${grub_cfg}.new
 181
 182   # Allow this to fail, since /boot/grub/ might need to be fatfs to support some
 183   # firmware implementations (e.g. OFW or EFI).
 184   chmod 444 ${grub_cfg}.new || true
 185 fi
 186 echo "Generating grub.cfg ..." >&2
 187
 188 cat << EOF
 189 #
 190 # DO NOT EDIT THIS FILE
 191 #
 192 # It is automatically generated by $0 using templates
 193 # from ${grub_mkconfig_dir} and settings from ${sysconfdir}/default/grub
 194 #
 195 EOF
 196
 197 for i in ${grub_mkconfig_dir}/* ; do
 198   case "$i" in
 199     # emacsen backup files. FIXME: support other editors
 200     *~) ;;
 201     *)
 202       if grub_file_is_not_garbage "$i" && test -x "$i" ; then
 203         echo
 204         echo "### BEGIN $i ###"
 205         "$i"
 206         echo "### END $i ###"
 207       fi
 208     ;;
 209   esac
 210 done
 211
 212 if test "x${grub_cfg}" != "x" ; then
 213   # none of the children aborted with error, install the new grub.cfg
 214   mv -f ${grub_cfg}.new ${grub_cfg}
 215 fi
 216
 217 echo "done" >&2