#!/bin/bash
#
# $Id: copysafe 356 2011-09-24 23:25:47Z svnuser $
#
# $Log: copysafe,v $
# Revision 1.14  2003/04/18 18:36:36  merlin
# Better sed code to deal with fstab with labels from RH (orig sub)
# rsync is not in -v mode by default anymore
#
# Revision 1.13  2001/11/12 22:40:35  merlin
# Deal with SFS
#
# Revision 1.12  2000/05/25 04:49:52  merlin
# Fixed latest problems with /mnt/disk/safe
#
# Revision 1.11  2000/05/25 04:25:51  merlin
# Fixed to handle /mnt/disk/safe correctly
#
# Revision 1.10  2000/05/20 04:21:10  merlin
# Root filesystem on safe can't be mounted read only. Doh!
#
# Revision 1.9  2000/05/20 04:10:13  merlin
# Don't show mkdir failures
#
# Revision 1.8  2000/05/20 04:08:41  merlin
# Create mount points on the safe partition
#
# Revision 1.7  2000/05/20 03:56:20  merlin
# Gar! I can't even write a shell script...
#
# Revision 1.6  2000/05/20 03:53:34  merlin
# Fix tab bug
#
# Revision 1.5  2000/05/20 03:48:31  merlin
# Added warning
#
# Revision 1.4  2000/05/20 03:40:34  merlin
# Converted from cp to rsync
#
# Revision 1.3  1999/09/16 23:41:51  merlin
# Die really works now
#
# Revision 1.2  1998/08/10 01:32:33  merlin
# Much improved version
#
# Revision 1.1  1998/08/03 23:05:09  merlin
# Initial checkin
#
#

die () {
    echo "$1 failed. Exit code: $?"
    exit 1
}

if [ z"$1" = z-v ]; then
    RSYNCOPT=-v
fi

if [ -d /safe ]; then
    SAFE=safe
    SEDSAFE=safe
fi

if [ z$SAFE == z ]; then
    echo "Cannot run copysafe if you didn't create a /safe partition. You should have!"
    exit
fi

echo -n "Backup root is in /$SAFE. Replacing in 5 seconds"
for i in 1 2 3 4 5
do
    sleep 1
    /bin/echo -n "."
done
echo

echo "Remounting /$SAFE read/write"
mount -o remount,rw /$SAFE || die "Can't remount /$SAFE -o rw"

echo "Starting rsync"
# mount | sed -e "s/.*on /--exclude=/" -e "s/ .*//" | grep -v "^/$" | tr '\012' ' '
rsync $RSYNCOPT -aSHx --delete --exclude journal.dat --delete-excluded  / /$SAFE
rsync $RSYNCOPT -aSHx --delete --exclude journal.dat --delete-excluded  /boot/. /$SAFE/boot/.

echo

echo "Creating /$SAFE mountpoints and converting /$SAFE/etc/fstab"

mkdir -p `mount | grep -v none | sed -e "s/.* on /\/$SEDSAFE/" -e "s/ .*//" | grep -v "^/$SAFE/$" | tr '\012' ' '` 2>/dev/null

mkdir /$SAFE/orig 
cat /etc/fstab | sed -e "s/\([	 ]\)\/\([	 ]\)/\1\/orig\2/" -e "s/\([	 ]\)\/$SEDSAFE/\1\//" -e "s/,ro//" > /$SAFE/etc/fstab

echo "Remounting /$SAFE read only"
mount -o remount,ro /$SAFE || die "remount /$SAFE -o ro"

if [ -f /etc/lilo.conf ]; then
    echo "Detected that you have lilo"
    if egrep -q "^image=/$SAFE/(boot/|)vmlinuz" /etc/lilo.conf; then
	echo "Running lilo to install new map"
	/sbin/lilo || die "lilo"
    else
	echo "/etc/lilo.conf isn't configured to offer kernel images in /$SAFE"
	echo "There is no point having a safe partition if you can't boot from it :-)"
	echo "Fix this and run lilo"
    fi
elif [ -f /boot/grub/grub.conf ]; then
    echo "Detected that you have grub"
    if egrep -qi safe /boot/grub/grub.conf; then
	echo "Grub seems to be configured to boot from /safe, you're all set"
    else
	echo "Grub may not know how to boot from /safe, which kind of negates"
	echo "The purpose of that partition. Edit /boot/grub/grub.conf to fix this"
    fi
else
    echo "Mmmhh, you seem to have neither lilo or grub. Make sure the system will reboot" 
fi