#!/usr/bin/sh
. /usr/share/os-prober/common.sh
set -e
# add support for btrfs with no separate /boot
# that is, rootsv = bootsv
partition="$1"
bootpart="$2"
mpoint="$3"
type="$4"
rootsv="$5"
bootsv="$6"
found_item=0
entry_result () {
if [ "x$type" = "xbtrfs" -a "$partition" = "$bootpart" ]; then
# trim off the leading subvol
kernelfile=$(echo "$kernel" | cut -d '/' -f 2- | cut -d '/' -f 2-)
if [ "x$rootsv" != "x$bootsv" ]; then
kernelfile="/boot/$kernelfile"
fi
else
kernelfile=$kernel
fi
if [ "$ignore_item" = 0 ] && \
[ -n "$kernel" ] && \
[ -e "$mpoint/$kernelfile" ]; then
result "$rootpart:$bootpart:$title:$kernel:$initrd:$parameters"
found_item=1
fi
kernel=""
parameters=""
initrd=""
title=""
ignore_item=0
}
parse_grub_menu () {
mpoint="$1"
rootpart="$2"
bootpart="$3"
kernel=""
parameters=""
initrd=""
title=""
ignore_item=0
while read line; do
debug "parsing: $line"
set -f
set -- $line
set +f
case "$1" in
menuentry)
entry_result
shift 1
# The double-quoted string is the title.
# Make sure to look at the text of the line
# before 'set' mangled it.
title="$(echo "$line" | sed -n 's/[^"]*"\(.*\)".*/\1/p' | sed 's/://g')"
if [ -z "$title" ]; then
# ... or single-quoted? Be careful
# to handle constructions like
# 'foo'\''bar' (which expands to
# foo'bar, as in shell), and to
# handle multiple single-quoted
# strings on the same line.
title="$(echo "$line" | sed -n "s/[^']*'\(\([^']\|'\\\\''\)*\)'.*/\1/p" | sed "s/'\\\\''/'/; s/://g")"
fi
if [ -z "$title" ]; then
ignore_item=1
elif echo "$title" | grep -q '(on /dev/[^)]*)$'; then
log "Skipping entry '$title':"
log "appears to be an automatic reference taken from another menu.lst"
ignore_item=1
fi
;;
linux*)
# Hack alert: sed off any (hdn,n) but
# assume the kernel is on the same
# partition.
kernel="$(echo "$2" | sed 's/(.*)//')"
shift 2
parameters="$@"
# Systems with a separate /boot will not have
# the path to the kernel in grub.cfg.
if [ "$partition" != "$bootpart" ]; then
kernel="/boot$kernel"
fi
;;
initrd*)
initrd="$(echo "$2" | sed 's/(.*)//')"
# Initrd same.
if [ "$partition" != "$bootpart" ]; then
initrd="/boot$initrd"
fi
;;
"}")
entry_result
;;
esac
done
entry_result
}
if [ -e "$mpoint/boot/grub/grub.cfg" ] && \
([ ! -e "$mpoint/boot/grub/menu.lst" ] || \
[ "$mpoint/boot/grub/grub.cfg" -nt "$mpoint/boot/grub/menu.lst" ]); then
debug "parsing grub.cfg"
parse_grub_menu "$mpoint" "$partition" "$bootpart" < "$mpoint/boot/grub/grub.cfg"
elif [ -e "$mpoint/boot/grub2/grub.cfg" ]; then
debug "parsing grub.cfg"
parse_grub_menu "$mpoint" "$partition" "$bootpart" < "$mpoint/boot/grub2/grub.cfg"
fi
if [ "$found_item" = 0 ]; then
exit 1
else
exit 0
fi
