File installgrub of Package grub
#!/bin/bash
#
# installgrub
#
# Program to automatically install GNU/GrUB under Linux
#
# Copyright: (c) SuSE GmbH, Nuernberg, Germany
#
# Authors: Thorsten Wandersmann <tw@suse.de>
# Philipp Thomas <pthomas@suse.de>
#
# $Id: installgrub,v 0.15 2002/01/22 18:06:14 pthomas Exp $
#
################################################################################
#
# Name: funct_see
#
# Synopsis: funct_see
#
# Description: sets -x
function funct_see () {
set -x
return
}
#-------------------------------------------------------------------------------
################################################################################
#
# Name: funct_help
#
# Synopsis: funct_help help
# funct_help "message"
#
# Description: funct_help will print out the help for the programm if
# the keyword "help" is passed to it and will exit with "0".
# In other cases it will print out the "message" as error, print
# out the help and then exit with "1".
function funct_help () {
if [ "$1" = "help" ]; then
funct_print_help
exit 0
fi
echo "WARNING: $1"
echo ""
funct_print_help
exit 1
}
#-------------------------------------------------------------------------------
################################################################################
#
# Name: funct_print_help
#
# Synopsis: funct_help
#
# Description: funct_print_help only prints out the helpscreen and then
# returns.
#
function funct_print_help () {
funct_version
echo ""
echo "NAME: installgrub"
echo "Synopsis: $0 help"
echo " $0 ide|scsi [debug]"
echo " $0 version"
echo "Description:"
echo "$0 will install grub on your system and, hopefully, will correctly"
echo "find all things needed."
echo "Usage: help - will print out this screen"
echo " ide|scsi - GRUB enumerates all drives, ide and scsi, beginning"
echo " with '0', just like the BIOS will report them."
echo " What it does not regard is SCSI/IDE boot order."
echo " If you have SCSI and IDE hard disks installed,"
echo " GRUB will start enumeration with the SCSI drives."
echo " So in order to correctly install GRUB, you"
echo " have to tell it whether booting starts with IDE"
echo " or SCSI"
echo " debug - causes a lot of messages to be written to"
echo " /var/log/installgrub.msg"
echo " version - prints out the version"
echo ""
echo "Send bugreports to 'pthomas@suse.de'"
echo ""
return
}
#-------------------------------------------------------------------------------
################################################################################
#
# Name: funct_version
#
# Synopsios: funct_version
#
# Description: Extract version info from RCS tag.
#
function funct_version () {
VERSION=`cat $0 | grep "^#.*Id" | gawk '{print $4" checked in on "$5}'`
echo "This is 'installgrub' version $VERSION."
return
}
#-------------------------------------------------------------------------------
################################################################################
#
# Name: funct_entry
#
# Description: Prepare an entry
#
function funct_entry() {
DESCR=$1
O_ROOT=`echo $CASE | cut -d"-" -f2`
O_ROOT_NR=`echo $O_ROOT | cut -c 9-10`
O_ROOT_HD=`echo $O_ROOT | cut -c 1-8`
G_O_HD=`grep $O_ROOT_HD /boot/grub/device.map | cut -c 2-4`
G_O_NR=`expr $O_ROOT_NR - 1`
G_O="($G_O_HD,$G_O_NR)"
ENTRY="$ENTRY\n\n# Entry -- $DESCR\ntitle $DESCR on $O_ROOT\nroot $G_O\nmakeaktive\nchainloader +1"
}
#-------------------------------------------------------------------------------
################################################################################
#
# Name: funct_options
#
# Description: Sort the options given at the command-line.
#
function funct_options() {
if [ "$1" = "debug" -o "$2" = "debug" ]; then
DEB="yes"
fi
if [ "$1" = "help" -o "$2" = "help" ]; then
funct_help help
exit 0
fi
if [ "$1" = "version" -o "$2" = "version" ]; then
funct_version
exit 0
fi
if [ "$1" = "scsi" -o "$2" = "scsi" ]; then
DEVICE="scsi"
fi
if [ "$1" = "ide" -o "$2" = "ide" ]; then
DEVICE="ide"
fi
test "$DEVICE" || funct_help "No device specified"
return
}
#-------------------------------------------------------------------------------
################################################################################
#
# Name: funct_parts
#
# Synopsis: funct_parts
#
# Descriptiuon: Searches the root-partition for GrUB (the Partition
# that inhabits /boot) and the Linux Root Partition.
#
function funct_parts () {
L_BOOT=`grep "[[:space:]]/boot[[:space:]]" /etc/fstab | cut -d" " -f1`
L_ROOT=`grep "[[:space:]]/[[:space:]]" /etc/fstab | cut -d" " -f1`
test -d "/boot" -a -z "$L_BOOT" && BOOT="d"
test -L "/boot" -a -z "$L_BOOT" && BOOT="l"
case "$BOOT" in
d)
L_BOOT="$L_ROOT"
;;
l)
BO_LINK=`ls -l /boot | gawk '{sub(/\/$/, "");print $NF}'`
L_BOOT=`grep "[[:space:]]$BO_LINK[[:space:]]" /etc/fstab | gawk '{print $1}'`
test "$L_BOOT" || L_BOOT="$L_ROOT"
;;
*)
test -e "/boot" || \
funct_help \
"No /boot found! If you use another Directory, please make a Link."
;;
esac
L_BOOT_NR=`echo $L_BOOT | cut -c 9-10`
L_BOOT_HD=`echo $L_BOOT | cut -c 1-8`
G_ROOT_HD=`grep $L_BOOT_HD /boot/grub/device.map | cut -c 2-4`
G_ROOT_NR=`expr $L_BOOT_NR - 1`
G_ROOT="($G_ROOT_HD,$G_ROOT_NR)"
return
}
#-------------------------------------------------------------------------------
################################################################################
#
# Name: funct_ide
#
# Synopsis: funct_ide
#
# Description: Serches the first IDE-HD-Drive.
#
function funct_ide () {
FDISK=`sfdisk -l | grep "^Disk" | grep "/dev/hd" | cut -c 6-13`
COUNTER=0
for i in $FDISK; do
eval FDISK_$COUNTER="$i"
COUNTER=`expr $COUNTER + 1`
done
echo $FDISK_0
return
}
#-------------------------------------------------------------------------------
################################################################################
#
# Name funct_ginst
#
# Synopsis: funct_ginst
#
# Description: "Installs" GrUB, that means, generates the /boot/grub/device.map
# file.
#
function funct_ginst () {
case "$DEVICE" in
scsi)
grub-install --recheck --root-directory=/boot /dev/sda
;;
ide)
IDE=`funct_ide`
grub-install --recheck --root-directory=/boot $IDE
;;
esac
# Seems, that the documentation is not right anymore. IDE seems to be
# always the first disk in grub. So its better to always do IDE as
# first boot in mix-systems. So you can say, use always (hd0)
I_ROOT="hd0"
# This is kind of a test.
return
}
#-------------------------------------------------------------------------------
################################################################################
#
# Name: funct_oses
#
# Synopsis:
#
# Description: Searches all partitions and add those found to the menu
#
function funct_oses () {
KERNELS=`file /boot/* | grep Kernel | cut -d":" -f1 | cut -d"/" -f3`
for i in $KERNELS; do
INITRD=""
INITRD_FILE=""
SUFFIX=`echo $i | gawk 'BEGIN {FS="vmlinuz"}{print $2}'`
test -e /boot/initrd && INITRD_FILE="initrd"
test -e "/boot/initrd$SUFFIX" && INITRD_FILE="initrd$SUFFIX"
test "$INITRD_FILE" && INITRD="initrd /$INITRD_FILE"
test "$INITRD" || INITRD_FILE="<no initrd found>"
ENTRY="$ENTRY\n\n# Entry -- $i with initrd: $INITRD_FILE\ntitle Linux on $L_ROOT -- \"$i\", \"$INITRD_FILE\", \"$G_ROOT\"\nroot $G_ROOT\nkernel /$i root=$L_ROOT\n$INITRD"
done
PARTITIONS=`sfdisk -d | grep "^/dev" | gawk 'BEGIN {FIELDWIDTHS = "10 37 2"}{print $3"-"$1}'`
for CASE in $PARTITIONS; do
case "$CASE" in
"1-"* | "4-"* | "6-"* | "b-"* | "c-"* | "e-"* | "1-"* | \
"11-"* | "14-"* | "16-"* | "1b-"* | "1c-"* | "1e-"* | \
"24-"* | "c1-"* | "c4-"* | "c6-"* | "e1-"* | "e3-"* )
funct_entry "DOS/Win"
;;
"7-"* | "17-"* | "84-"* )
funct_entry "OS/2"
;;
"a-"* )
funct_entry "OS/2 BootManager"
;;
"17-"* | "84-"* )
funct_entry "WinNT"
;;
"82-"* )
SWAPP=`echo $CASE | cut -d"-" -f2`
SWAPT=`mount $SWAPP /tmp 2>&1 | grep swapspace ;
umount /tmp 2>/dev/null`
test "$SWAPT" || funct_entry "Solaris or SWAP !!!" ;;
esac
done
return
}
#-------------------------------------------------------------------------------
################################################################################
#
# Name: funct_build
#
# Synopsis: funct_build
#
# Description: Builds the menu.lst file.
#
function funct_build () {
DATE=`date`
ENTRY="# Automatic generated on $DATE\ntimeout 30\ndefault 0\ncolor green/light-gray black/cyan"
funct_oses
ENTRY="$ENTRY\n\n# Automatic End\n# Inserting Menu.own\n\n"
test -e /boot/grub/menu.lst && cp /boot/grub/menu.lst /boot/grub/menu.old
echo -e "$ENTRY" > /boot/grub/menu.lst
test -e /boot/grub/menu.own && cat /boot/grub/menu.own >> /boot/grub/menu.lst
ENTRY="$ENTRY\n\n# Inserting Menu.own end\n\n# Have a lot of fun ..."
return
}
#-------------------------------------------------------------------------------
################################################################################
#
# Name: funct_write
#
# Synopsis: funct_write
#
# Description: Writes GrUB to MBR
#
# Notice: Because of "EOF" there is no format.
#
function funct_write () {
grub << EOF
root $G_ROOT
install /boot/grub/stage1 d ($I_ROOT) ($I_ROOT)1+16 p $G_ROOT/boot/grub/stage2 /boot/grub/menu.lst
quit
EOF
return
}
#-------------------------------------------------------------------------------
################################################################################
#
# This is the Main-Programm ;-)
#
test "$1" = "see" -o "$2" = "see" -o "$3" = "see" && funct_see
funct_options $1 $2
funct_ginst
funct_parts
funct_build
funct_write
exit 0
#-------------------------------------------------------------------------------
################################################################################
#
# End Of INSTALLGRUB
#
# $Log: installgrub,v $
# Revision 0.15 2002/01/22 18:06:14 pthomas
# - Output bugreport address in help, not in version.
# - Reformat help output a bit.
#
# Revision 0.14 2002/01/22 18:00:02 pthomas
# Correct typo.
#
# Revision 0.13 2002/01/22 14:58:14 pthomas
# Correct spelling and comments.
# Change bugreport address to pthomas@suse.de
#
# Revision 0.12 2000/12/19 12:14:46 root
# - fixed the version information in help
# - rewrote the part, the scripts looks for the patitions.
# that means, now its a case, and all partitions will go throug it.
# - droped funct_debug its useless now.
#
# Revision 0.11 2000/09/23 13:19:40 root
# found kind of a bug
# the manuel of grub says, that your hd-order depends on the bios.
# that means: is the first thing to boot ide or scsi.
# well in single-systems this do nithing, but it seems, that
# against the manuel, the ide-drive is always the first one in grub.
# even if the bios says something else.
# so i got an error to boot from scsi. after booting in bios from scsi
# all went well.
#
# Revision 0.10 2000/09/23 12:05:06 root
# did a fix for scsi ide mix-systems
# rerun grub-install with an existing device.map can couse nothing.
# so if a hd is added, it could be, that it will not be found.
# better to remove the file first and then run grub-install
#
# Revision 0.9 2000/09/23 11:06:27 root
# enterd the possibility to have an menu.own file.
# menu.own will be appand below the automatic entrys.
# old menu.lst will be saved to menu.old
#
# Revision 0.8 2000/09/23 08:33:29 root
# make os/2 and nt detection ready.
# build in detection of /boot, if /boot is not SuSE-Standard
# fixed initrd-Entry
# todo: description fixing of the functions
# will rebuild the detection of the OSes -> going throug all partitions
# and than go through a case.
#
# Revision 0.7 2000/09/18 11:53:22 root
# fixed debug-messages
# added option see for set -x
# todo: correct the descriptions of the functions
#
# Revision 0.6 2000/09/18 07:22:59 root
# minor bug fixed
#
# Revision 0.5 2000/09/18 07:18:55 root
# made it nicer
# mor functions, structure for other OS
# all kernels, with different initrds
#
# Revision 0.4 2000/09/15 13:42:26 root
# minor bug fixed
#
# Revision 0.3 2000/09/15 13:37:02 root
# First Version that really installs grub, but only linux
#
# Revision 0.2 2000/09/15 12:16:12 root
# ok, now it works as i wanted it
#
# Revision 0.1 2000/09/15 11:54:37 root
# First little try, only for testing.
# It will do nothing, because GrUB is disabled in this version.
# Lets see if the idea is working.
#
