#!/bin/sh
. /usr/share/os-prober/common.sh
set -e
partition="$1"
bootpart="$2"
mpoint="$3"
type="$4"
found_item=0
title=""
rootdev=""
kernel=""
parameters=""
initrd=""
read_only=""
default_rootdev=""
default_kernel=""
default_parameters=""
default_initrd=""
default_read_only=""
dequote () {
item="${1%\"}"
echo "${item#\"}"
}
recordstanza () {
if [ -n "$kernel" ] && [ -n "$title" ]; then
if [ -e "$mpoint/$kernel" ] || [ -e "$mpoint/boot$kernel" ]; then
if [ -e "$mpoint/boot$initrd" ] || [ -e "$mpoint/$initrd" ]; then
if [ "$read_only" ]; then
parameters="ro $parameters"
fi
if [ "$rootdev" ]; then
parameters="root=$rootdev $parameters"
fi
parameters="${parameters% }"
result "$rootpart:$bootpart:$title:$kernel:$initrd:$parameters"
found_item=1
else
debug "cannot find $initrd, not recording"
fi
else
debug "cannot find $kernel, not recording"
fi
title=""
rootdev="$default_rootdev"
kernel="$default_kernel"
parameters="$default_parameters"
initrd="$default_initrd"
read_only="$default_read_only"
else
# Everything before set default values.
default_rootdev="$rootdev"
default_kernel="$kernel"
default_parameters="$parameters"
default_initrd="$initrd"
default_read_only="$read_only"
fi
}
parse_silo_conf () {
mpoint="$1"
rootpart="$2"
bootpart="$3"
IFS=" ="
while read line; do
debug "parsing: $line"
set -f
set -- $line
set +f
case "$1" in
root)
rootdev=$(dequote "$2")
;;
image)
recordstanza
# Dereference if symbolic link
if echo "$2" | grep -qs "/boot/"; then
kernel="$(readlink -f "$(dequote "$mpoint$2")" | sed -e 's#'"$mpoint"'##g')"
else
kernel="$(readlink -f "$(dequote "$mpoint/boot$2")" | sed -e 's#'"$mpoint"'/boot##g')"
fi
;;
append)
shift 1
parameters=$(dequote "${line#append=}")
;;
initrd)
# Dereference if symbolic link
if echo "$2" | grep -qs "/boot/"; then
initrd="$(readlink -f "$(dequote "$mpoint$2")" | sed -e 's#'"$mpoint"'##g')"
else
initrd="$(readlink -f "$(dequote "$mpoint/boot$2")" | sed -e 's#'"$mpoint"'/boot##g')"
fi
;;
label)
shift 1
title=$(dequote "$*" | sed -e 's/:/ /g')
;;
other)
recordstanza
;;
read-only)
read_only=1
;;
esac
done
recordstanza
}
if [ -e "$mpoint/boot/silo.conf" ]; then
debug "parsing silo.conf"
parse_silo_conf "$mpoint" "$partition" "$bootpart" < "$mpoint/boot/silo.conf"
fi
if [ "$found_item" = 0 ]; then
exit 1
else
exit 0
fi