1#!/usr/bin/ksh -p
2#
3# CDDL HEADER START
4#
5# The contents of this file are subject to the terms of the
6# Common Development and Distribution License (the "License").
7# You may not use this file except in compliance with the License.
8#
9# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10# or http://www.opensolaris.org/os/licensing.
11# See the License for the specific language governing permissions
12# and limitations under the License.
13#
14# When distributing Covered Code, include this CDDL HEADER in each
15# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16# If applicable, add the following below this CDDL HEADER, with the
17# fields enclosed by brackets "[]" replaced with your own identifying
18# information: Portions Copyright [yyyy] [name of copyright owner]
19#
20# CDDL HEADER END
21#
22
23#
24# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
25# Use is subject to license terms.
26#
27
28#
29# Copyright (c) 2016 by Delphix. All rights reserved.
30#
31
32. $STF_SUITE/tests/functional/truncate/truncate.cfg
33. $STF_SUITE/include/libtest.shlib
34
35#
36# DESCRIPTION:
37# Tests file truncation within ZFS.
38#
39# STRATEGY:
40# 1. Open file
41# 2. Write random blocks in random places
42# 3. Truncate the file
43# 4. Repeat steps 2 and 3 lots of times
44# 5. Close the file.
45#
46
47verify_runnable "global"
48
49function cleanup
50{
51	[[ -e $TESTDIR ]] && log_must rm -rf $TESTDIR/*
52}
53
54log_assert "Ensure file with random blocks is truncated properly"
55
56options=""
57options_display="default options"
58
59log_onexit cleanup
60
61[[ -n "$TRUNC_FILESIZE" ]] && options=" $options -f $TRUNC_FILESIZE "
62
63[[ -n "$TRUNC_BLKSIZE" ]] && options="$options -b $TRUNC_BLKSIZE "
64
65[[ -n "$TRUNC_COUNT" ]] && options="$options -c $TRUNC_COUNT "
66
67[[ -n "$TRUNC_SEED" ]] && options="$options -s $TRUNC_SEED "
68
69[[ -n "$TRUNC_FILEOFFSET" ]] && options="$options -o $TRUNC_FILEOFFSET "
70
71[[ -n "$options" ]] && options_display=$options
72
73log_note "Invoking file_trunc with: $options_display"
74log_must file_trunc $options $TESTDIR/$TESTFILE
75
76typeset dir=$(get_device_dir $DISKS)
77verify_filesys "$TESTPOOL" "$TESTPOOL/$TESTFS" "$dir"
78
79log_pass "Random blocks have been truncated properly."
80