3 # Copyright (C) 2007, 2008, 2009 Google Inc.
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful, but
11 # WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 # General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
24 TMPDIR=`mktemp -d` || exit 1
25 CLEANUP+=("rmdir $TMPDIR")
27 # If the target device is not a real block device we'll first losetup it.
28 # This is needed for file disks.
29 if [ ! -b $blockdev ]; then
30 ORIGINAL_BLOCKDEV=$blockdev
31 blockdev=$(losetup -sf $blockdev)
32 CLEANUP+=("losetup -d $blockdev")
35 if [ "$PARTITION_STYLE" = "none" ]; then
36 filesystem_dev=$blockdev
37 elif [ "$PARTITION_STYLE" = "msdos" ]; then
38 filesystem_dev=$(map_disk0 $blockdev)
39 CLEANUP+=("unmap_disk0 $blockdev")
41 echo "Unknown partition style $PARTITION_STYLE"
45 mount $filesystem_dev $TMPDIR
46 CLEANUP+=("umount $TMPDIR")
48 HNAME="$TMPDIR/etc/hostname"
49 MNAME="$TMPDIR/etc/mailname"
51 # for hostname, we raise and error if the old hostname is not what we
53 OLD_HNAME="`cat $HNAME`"
54 if [ "$OLD_HNAME" = "$old_name" ]; then
55 echo $instance > $HNAME
57 log_error "Cannot rename from $old_name to $instance:"
58 log_error "Instance has a different hostname ($OLD_HNAME)"
62 # for mailname, we rename only if it has the old name, otherwise we
63 # ignore it (and assumme that it's a customized name)
64 if [ "`cat $MNAME`" = "$old_name" ]; then
65 echo $instance > $MNAME