#!/bin/bash

#
# Copyright (C) 2013 Karel Zak <kzak@redhat.com>
#
# This file is part of util-linux.
#
# This file 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 2 of the License, or
# (at your option) any later version.
#
# This file 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.
#

TS_TOPDIR="$(dirname $0)/../.."
TS_DESC="losetup"

. $TS_TOPDIR/functions.sh
ts_init "$*"
ts_skip_nonroot

DEVICE=$(ts_scsi_debug_init dev_size_mb=11)
REFILE=$(ts_image_init 10)

function lo_print {
	local lo=$1
	echo "offset:    $( $TS_CMD_LOSETUP --list --raw -n -O OFFSET $lo )"
	echo "sizelimit: $( $TS_CMD_LOSETUP --list --raw -n -O SIZELIMIT $lo )"
	echo "size:      $( $TS_CMD_LSBLK -o SIZE -b -n -r $lo )"
}

#
# file-* tests: Backing file is a regular file
#
BACKFILE="$REFILE"

ts_init_subtest "file"
LODEV=$( $TS_CMD_LOSETUP --find --show $BACKFILE )
if [ -z "$LODEV" ]; then
	ts_log "Failed to create loop device"
fi
lo_print $LODEV >> $TS_OUTPUT
$TS_CMD_LOSETUP -d $LODEV
ts_finalize_subtest

ts_init_subtest "file-offset"
LODEV=$( $TS_CMD_LOSETUP --offset 1MiB --find --show $BACKFILE )
if [ -z "$LODEV" ]; then
	ts_log "Failed to create loop device"
fi
lo_print $LODEV >> $TS_OUTPUT
$TS_CMD_LOSETUP -d $LODEV
ts_finalize_subtest


ts_init_subtest "file-sizelimit"
LODEV=$( $TS_CMD_LOSETUP --sizelimit 3MiB --find --show $BACKFILE )
if [ -z "$LODEV" ]; then
	ts_log "Failed to create loop device"
fi
lo_print $LODEV >> $TS_OUTPUT
$TS_CMD_LOSETUP -d $LODEV
ts_finalize_subtest


ts_init_subtest "file-section"
LODEV=$( $TS_CMD_LOSETUP --offset 1MiB --sizelimit 3MiB --find --show $BACKFILE )
if [ -z "$LODEV" ]; then
	ts_log "Failed to create loop device"
fi
lo_print $LODEV >> $TS_OUTPUT
$TS_CMD_LOSETUP -d $LODEV
ts_finalize_subtest

rm -rf $BACKFILE

#
# Backing file is a block device
#
BACKFILE="$DEVICE"

ts_init_subtest "blkdev"
LODEV=$( $TS_CMD_LOSETUP --find --show $BACKFILE )
if [ -z "$LODEV" ]; then
	ts_log "Failed to create loop device"
fi
lo_print $LODEV >> $TS_OUTPUT
$TS_CMD_LOSETUP -d $LODEV
ts_finalize_subtest

ts_init_subtest "blkdev-offset"
LODEV=$( $TS_CMD_LOSETUP --offset 1MiB --find --show $BACKFILE )
if [ -z "$LODEV" ]; then
	ts_log "Failed to create loop device"
fi
lo_print $LODEV >> $TS_OUTPUT
$TS_CMD_LOSETUP -d $LODEV
ts_finalize_subtest


ts_init_subtest "blkdev-sizelimit"
LODEV=$( $TS_CMD_LOSETUP --sizelimit 3MiB --find --show $BACKFILE )
if [ -z "$LODEV" ]; then
	ts_log "Failed to create loop device"
fi
lo_print $LODEV >> $TS_OUTPUT
$TS_CMD_LOSETUP -d $LODEV
ts_finalize_subtest


ts_init_subtest "blkdev-section"
LODEV=$( $TS_CMD_LOSETUP --offset 1MiB --sizelimit 3MiB --find --show $BACKFILE )
if [ -z "$LODEV" ]; then
	ts_log "Failed to create loop device"
fi
lo_print $LODEV >> $TS_OUTPUT
$TS_CMD_LOSETUP -d $LODEV
ts_finalize_subtest

udevadm settle

rmmod scsi_debug

ts_finalize



