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- # Helper library for grub-mkconfig
- # Copyright (C) 2007,2008,2009 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&^&&;s,grub,grub2,"
- prefix=/usr
- exec_prefix=/usr
- datarootdir=${prefix}/share
- datadir=/usr/share
- bindir=/usr/bin
- sbindir=/usr/sbin
- pkgdatadir=${datadir}/`echo grub | sed "${transform}"`
- if test "x$grub_probe" = x; then
- grub_probe=${sbindir}/`echo grub-probe | sed ${transform}`
- fi
- if test "x$grub_mkrelpath" = x; then
- grub_mkrelpath=${bindir}/`echo grub-mkrelpath | sed ${transform}`
- fi
- grub_warn ()
- {
- echo "Warning: $@" >&2
- }
- make_system_path_relative_to_its_root ()
- {
- path="`${grub_mkrelpath} $1`"
- case "`uname 2>/dev/null`" in
- CYGWIN*)
- # Cygwin: Check if regular or emulated mount.
- if [ -z "$dir" ] || [ "`stat -c %D "$dir/.."`" != 620000 ] ; then
- # Reached some mount point not below /cygdrive.
- # GRUB does not know Cygwin's emulated mounts,
- # convert to Win32 path and remove drive letter.
- path=`cygpath -m "$path" | sed -n 's,^[A-Za-z]:,,p'`
- test ! -z "$path" || return 1
- fi ;;
- esac
- echo "$path"
- }
- is_path_readable_by_grub ()
- {
- path=$1
- # abort if path doesn't exist
- if test -e $path ; then : ;else
- return 1
- fi
- # abort if file is in a filesystem we can't read
- if ${grub_probe} -t fs $path > /dev/null 2>&1 ; then : ; else
- return 1
- fi
- return 0
- }
- convert_system_path_to_grub_path ()
- {
- path=$1
- grub_warn "convert_system_path_to_grub_path() is deprecated. Use prepare_grub_to_access_device() instead."
- # abort if GRUB can't access the path
- if is_path_readable_by_grub ${path} ; then : ; else
- return 1
- fi
- if drive=`${grub_probe} -t drive $path` ; then : ; else
- return 1
- fi
- if relative_path=`make_system_path_relative_to_its_root $path` ; then : ; else
- return 1
- fi
- echo ${drive}${relative_path}
- }
- save_default_entry ()
- {
- if [ "x${GRUB_SAVEDEFAULT}" = "xtrue" ] ; then
- cat << EOF
- savedefault
- EOF
- fi
- }
- prepare_grub_to_access_device ()
- {
- device=$1
- # Abstraction modules aren't auto-loaded.
- abstraction="`${grub_probe} --device ${device} --target=abstraction`"
- for module in ${abstraction} ; do
- echo "insmod ${module}"
- done
- fs="`${grub_probe} --device ${device} --target=fs`"
- for module in ${fs} ; do
- echo "insmod ${module}"
- done
- # If there's a filesystem UUID that GRUB is capable of identifying, use it;
- # otherwise set root as per value in device.map.
- # If label is available then use label (bcj)
- if [ "x${GRUB_DEVICE_LABEL}" != "x" ] && [ "x${GRUB_USE_LABEL}" = "xtrue" ]; then
- echo "search --no-floppy --label --set ${GRUB_DEVICE_LABEL}"
- else
- echo "set root='`${grub_probe} --device ${device} --target=drive`'"
- if fs_uuid="`${grub_probe} --device ${device} --target=fs_uuid 2> /dev/null`" ; then
- echo "search --no-floppy --fs-uuid --set ${fs_uuid}"
- fi
- fi
- }
- grub_file_is_not_garbage ()
- {
- if test -f "$1" ; then
- case "$1" in
- *.dpkg-*) return 1 ;; # debian dpkg
- esac
- else
- return 1
- fi
- return 0
- }
- version_test_numeric ()
- {
- local a=$1
- local cmp=$2
- local b=$3
- if [ "$a" = "$b" ] ; then
- case $cmp in
- ge|eq|le) return 0 ;;
- gt|lt) return 1 ;;
- esac
- fi
- if [ "$cmp" = "lt" ] ; then
- c=$a
- a=$b
- b=$c
- fi
- if (echo $a ; echo $b) | sort -n | head -n 1 | grep -qx $b ; then
- return 0
- else
- return 1
- fi
- }
- version_test_gt ()
- {
- local a=`echo $1 | sed -e "s/[^-]*-//"`
- local b=`echo $2 | sed -e "s/[^-]*-//"`
- local cmp=gt
- if [ "x$b" = "x" ] ; then
- return 0
- fi
- case $a:$b in
- *.old:*.old) ;;
- *.old:*) a=`echo -n $a | sed -e s/\.old$//` ; cmp=gt ;;
- *:*.old) b=`echo -n $b | sed -e s/\.old$//` ; cmp=ge ;;
- esac
- version_test_numeric $a $cmp $b
- return $?
- }
- version_find_latest ()
- {
- local a=""
- for i in $@ ; do
- if version_test_gt "$i" "$a" ; then
- a="$i"
- fi
- done
- echo "$a"
- }
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