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# Helper library for update-grub
# Copyright (C) 2007,2008 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="@program_transform_name@"
prefix=@prefix@
exec_prefix=@exec_prefix@
datadir=@datadir@
sbindir=@sbindir@
pkgdatadir=${datadir}/`echo @PACKAGE_TARNAME@ | sed "${transform}"`
grub_probe=${sbindir}/`echo grub-probe | sed ${transform}`
make_system_path_relative_to_its_root ()
{
path=$1
# abort if file doesn't exist
if test -e $path ; then : ;else
return 1
fi
# canonicalize
if path=`readlink -f $path` ; then : ; else
return 1
fi
# if not a directory, climb up to the directory containing it
if test -d $path ; then
dir=$path
else
dir=`echo $path | sed -e "s,/[^/]*$,,g"`
fi
num=`stat -c %d $dir`
# this loop sets $dir to the root directory of the filesystem we're inspecting
while : ; do
parent=`readlink -f $dir/..`
if [ "x`stat -c %d $parent`" = "x$num" ] ; then : ; else
# $parent is another filesystem; we found it.
break
fi
if [ "x$dir" = "x/" ] ; then
# / is our root.
break
fi
dir=$parent
done
echo $path | sed -e "s,^$dir,/,g" -e "s,//,/,g"
}
convert_system_path_to_grub_path ()
{
path=$1
# abort if file 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 $path > /dev/null 2>&1 ; then : ; else
return 1
fi
if drive=`${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
# remove any trailing slash, even if that slash is everything we have
relative_path=`echo ${relative_path} | sed -e "s,/*$,,g"`
echo ${drive}${relative_path}
}
font_path ()
{
# Prefer system path for space reasons (/boot/grub might be a very small
# partition in case of OpenFirmware, etc).
for dir in ${pkgdatadir} /usr/share/grub /boot/grub ; do
# Prefer complete fonts over incomplete ones.
for basename in unicode unifont ascii ; do
path="${dir}/${basename}.pff"
if convert_system_path_to_grub_path ${path} > /dev/null ; then
echo "${path}"
return 0
fi
done
done
return 1
}
grub_file_is_not_garbage ()
{
if test -f "$1" ; then
case "$1" in
*.dpkg-dist|*.dpkg-old|*.dpkg-tmp) return 1 ;; # debian dpkg
esac
else
return 1
fi
return 0
}
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