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[PATCH] Use os-prober to detect other OSes during update-grub
From: |
Fabian Greffrath |
Subject: |
[PATCH] Use os-prober to detect other OSes during update-grub |
Date: |
Mon, 11 Feb 2008 09:53:14 +0100 |
User-agent: |
Thunderbird 2.0.0.9 (Windows/20071031) |
The following is a script that should be installed into `/etc/grub.d/os-prober'.
It uses Debian's `os-prober' package (if installed) to detect other operating
systems which are installed on the computer and add them to the boot menu. It's
up to you to decide if this is too Debian-specific or if you'd like to have it
included in the upstream distribution of GRUB.
This script is improved over the one from my previous posting and has some minor
issues fixed. Please use this version instead. It is all my work.
@Robert: Refering to your question from Mon, 4 Feb 2008: I do not believe it is
possible to simplify the code with "echo something | read a b c d" because it
has to be '-f 6-' in the last step. Kernel parameters may of course contain
colons. I do not know if it is possible to implement this via "echo ... | read
...".
#! /bin/sh -e
# update-grub helper script.
# Copyright (C) 2006,2007,2008 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/>.
if [ -x "`which os-prober 2>/dev/null`" ] ; then
OSPROBED="`os-prober | tr ' ' '|' | paste -s -d ' '`"
fi
if [ -n "${OSPROBED}" ] ; then
for OS in ${OSPROBED} ; do
DEVICE="`echo ${OS} | cut -d ':' -f 1`"
LONGNAME="`echo ${OS} | cut -d ':' -f 2 | tr '|' ' '`"
LABEL="`echo ${OS} | cut -d ':' -f 3 | tr '|' ' '`"
BOOT="`echo ${OS} | cut -d ':' -f 4`"
if [ -z "${LONGNAME}" ] ; then
LONGNAME="${LABEL}"
fi
echo "Found ${LONGNAME} on ${DEVICE}" >&2
TESTDEVICE="`grub-probe --target=device $0`"
if [ -n "`grub-probe --target=drive --device ${TESTDEVICE} 2>/dev/null`" ]
; then
case "${BOOT}" in
chain)
CHAINROOT="`grub-probe --target=drive --device ${DEVICE}`"
cat << EOF
menuentry "${LONGNAME} (on ${DEVICE})" {
set root=${CHAINROOT}
chainloader +1
}
EOF
;;
linux)
if [ -x "`which linux-boot-prober 2>/dev/null`" ] ; then
LINUXPROBED="`linux-boot-prober ${DEVICE} | tr ' ' '|' | paste -s
-d ' '`"
fi
if [ -n "${LINUXPROBED}" ] ; then
for LINUX in ${LINUXPROBED} ; do
LROOT="`echo ${LINUX} | cut -d ':' -f 1`"
LBOOT="`echo ${LINUX} | cut -d ':' -f 2`"
LLABEL="`echo ${LINUX} | cut -d ':' -f 3 | tr '|' ' '`"
LKERNEL="`echo ${LINUX} | cut -d ':' -f 4`"
LINITRD="`echo ${LINUX} | cut -d ':' -f 5`"
LPARAMS="`echo ${LINUX} | cut -d ':' -f 6- | tr '|' ' '`"
LINUXROOT="`grub-probe --target=drive --device ${LBOOT}`"
if [ -z "${LLABEL}" ] ; then
LLABEL="${LONGNAME}"
fi
cat << EOF
menuentry "${LLABEL} (on ${DEVICE})" {
set root=${LINUXROOT}
linux ${LKERNEL} ${LPARAMS}
EOF
if [ -n "${LINITRD}" ] ; then
cat << EOF
initrd ${LINITRD}
EOF
fi
cat << EOF
}
EOF
done
fi
;;
hurd)
# not yet...
;;
*)
;;
esac
fi
done
fi
- [PATCH] Use os-prober to detect other OSes during update-grub,
Fabian Greffrath <=