-#!/bin/sh
+#!/bin/bash
-# Copyright (C) 2007 Google Inc.
+# Copyright (C) 2007, 2008, 2009 Google Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
set -e
-TEMP=`getopt -o o:n:b:s: -n '$0' -- "$@"`
-
-if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
-
-# Note the quotes around `$TEMP': they are essential!
-eval set -- "$TEMP"
-
-while true; do
- case "$1" in
- -o) old_name=$2; shift 2;;
-
- -n) new_name=$2; shift 2;;
-
- -b) blockdev=$2; shift 2;;
-
- -s) swapdev=$2; shift 2;;
-
- --) shift; break;;
-
- *) echo "Internal error!"; exit 1;;
- esac
-done
-if [ -z "$old_name" -o -z "$new_name" -o -z "$blockdev" -o -z "$swapdev" ]; then
- echo "Missing -o or -n or -b or -s argument!"
- exit 1
-fi
+. common.sh
TMPDIR=`mktemp -d` || exit 1
-trap "umount $TMPDIR; rmdir $TMPDIR" EXIT
+CLEANUP+=("rmdir $TMPDIR")
-# If it's not a block device try to mount it via loopback device.
+# If the target device is not a real block device we'll first losetup it.
# This is needed for file disks.
-MOUNT_OPTIONS=""
if [ ! -b $blockdev ]; then
- MOUNT_OPTIONS="$MOUNT_OPTIONS -o loop"
+ ORIGINAL_BLOCKDEV=$blockdev
+ blockdev=$(losetup -sf $blockdev)
+ CLEANUP+=("losetup -d $blockdev")
fi
-mount $MOUNT_OPTIONS $blockdev $TMPDIR
+
+if [ "$PARTITION_STYLE" = "none" ]; then
+ filesystem_dev=$blockdev
+elif [ "$PARTITION_STYLE" = "msdos" ]; then
+ filesystem_dev=$(map_disk0 $blockdev)
+ CLEANUP+=("unmap_disk0 $blockdev")
+else
+ echo "Unknown partition style $PARTITION_STYLE"
+ exit 1
+fi
+
+mount $filesystem_dev $TMPDIR
+CLEANUP+=("umount $TMPDIR")
HNAME="$TMPDIR/etc/hostname"
MNAME="$TMPDIR/etc/mailname"
# expect
OLD_HNAME="`cat $HNAME`"
if [ "$OLD_HNAME" = "$old_name" ]; then
- echo $new_name > $HNAME
+ echo $instance > $HNAME
else
- echo "Cannot rename from $old_name to $new_name:" 1>&2
- echo "Instance has a different hostname ($OLD_HNAME)" 1>&2
+ log_error "Cannot rename from $old_name to $instance:"
+ log_error "Instance has a different hostname ($OLD_HNAME)"
exit 1
fi
-# for mailname, we rename only if it has the old_name, otherwise we
+# for mailname, we rename only if it has the old name, otherwise we
# ignore it (and assumme that it's a customized name)
if [ "`cat $MNAME`" = "$old_name" ]; then
- echo $new_name > $MNAME
+ echo $instance > $MNAME
fi
-umount $TMPDIR
-rmdir $TMPDIR
+# execute cleanups
+cleanup
trap - EXIT
exit 0