177 lines
4 KiB
Text
177 lines
4 KiB
Text
# Helper library for grub-mkconfig
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# Copyright (C) 2007,2008,2009 Free Software Foundation, Inc.
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#
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# GRUB is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# GRUB is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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transform="@program_transform_name@"
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prefix=@prefix@
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exec_prefix=@exec_prefix@
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datarootdir=@datarootdir@
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datadir=@datadir@
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bindir=@bindir@
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sbindir=@sbindir@
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pkgdatadir=${datadir}/`echo @PACKAGE_TARNAME@ | sed "${transform}"`
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grub_probe=${sbindir}/`echo grub-probe | sed ${transform}`
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grub_mkrelpath=${bindir}/`echo grub-mkrelpath | sed ${transform}`
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grub_warn ()
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{
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echo "Warning: $@" >&2
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}
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make_system_path_relative_to_its_root ()
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{
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path="`${grub_mkrelpath} $1`"
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case "`uname 2>/dev/null`" in
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CYGWIN*)
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# Cygwin: Check if regular or emulated mount.
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if [ -z "$dir" ] || [ "`stat -c %D "$dir/.."`" != 620000 ] ; then
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# Reached some mount point not below /cygdrive.
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# GRUB does not know Cygwin's emulated mounts,
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# convert to Win32 path and remove drive letter.
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path=`cygpath -m "$path" | sed -n 's,^[A-Za-z]:,,p'`
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test ! -z "$path" || return 1
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fi ;;
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esac
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echo "$path"
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}
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is_path_readable_by_grub ()
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{
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path=$1
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# abort if path doesn't exist
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if test -e $path ; then : ;else
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return 1
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fi
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# abort if file is in a filesystem we can't read
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if ${grub_probe} -t fs $path > /dev/null 2>&1 ; then : ; else
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return 1
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fi
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return 0
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}
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convert_system_path_to_grub_path ()
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{
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path=$1
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grub_warn "convert_system_path_to_grub_path() is deprecated. Use prepare_grub_to_access_device() instead."
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# abort if GRUB can't access the path
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if is_path_readable_by_grub ${path} ; then : ; else
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return 1
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fi
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if drive=`${grub_probe} -t drive $path` ; then : ; else
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return 1
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fi
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if relative_path=`make_system_path_relative_to_its_root $path` ; then : ; else
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return 1
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fi
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echo ${drive}${relative_path}
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}
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prepare_grub_to_access_device ()
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{
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device=$1
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# Abstraction modules aren't auto-loaded.
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abstraction="`${grub_probe} --device ${device} --target=abstraction`"
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for module in ${abstraction} ; do
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echo "insmod ${module}"
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done
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fs="`${grub_probe} --device ${device} --target=fs`"
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for module in ${fs} ; do
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echo "insmod ${module}"
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done
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# If there's a filesystem UUID that GRUB is capable of identifying, use it;
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# otherwise set root as per value in device.map.
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echo "set root=`${grub_probe} --device ${device} --target=drive`"
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if fs_uuid="`${grub_probe} --device ${device} --target=fs_uuid 2> /dev/null`" ; then
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echo "search --no-floppy --fs-uuid --set ${fs_uuid}"
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fi
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}
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grub_file_is_not_garbage ()
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{
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if test -f "$1" ; then
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case "$1" in
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*.dpkg-*) return 1 ;; # debian dpkg
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esac
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else
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return 1
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fi
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return 0
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}
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version_test_numeric ()
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{
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local a=$1
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local cmp=$2
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local b=$3
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if [ "$a" = "$b" ] ; then
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case $cmp in
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ge|eq|le) return 0 ;;
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gt|lt) return 1 ;;
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esac
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fi
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if [ "$cmp" = "lt" ] ; then
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c=$a
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a=$b
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b=$c
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fi
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if (echo $a ; echo $b) | sort -n | head -n 1 | grep -qx $b ; then
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return 0
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else
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return 1
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fi
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}
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version_test_gt ()
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{
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local a=`echo $1 | sed -e "s/[^-]*-//"`
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local b=`echo $2 | sed -e "s/[^-]*-//"`
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local cmp=gt
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if [ "x$b" = "x" ] ; then
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return 0
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fi
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case $a:$b in
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*.old:*.old) ;;
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*.old:*) a=`echo -n $a | sed -e s/\.old$//` ; cmp=gt ;;
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*:*.old) b=`echo -n $b | sed -e s/\.old$//` ; cmp=ge ;;
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esac
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version_test_numeric $a $cmp $b
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return $?
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}
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version_find_latest ()
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{
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local a=""
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for i in $@ ; do
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if version_test_gt "$i" "$a" ; then
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a="$i"
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fi
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done
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echo "$a"
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}
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