1# vim: filetype=sh
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# $FreeBSD$
24
25#
26# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
27# Use is subject to license terms.
28#
29# ident	"@(#)inherit.kshlib	1.3	09/05/19 SMI"
30#
31
32#
33# Simple function to get the source of the specified property.
34# If unable to get the property then exits.
35#
36function get_prop_src # property dataset
37{
38        typeset prop_val
39        typeset prop=$1
40        typeset dataset=$2
41
42	prop_val=`$ZFS get -H -o source $prop $dataset`
43
44        if [[ $? -ne 0 ]]; then
45                log_fail "Unable to determine the source of $prop " \
46                        "property for dataset $dataset"
47        else
48                print $prop_val
49        fi
50}
51
52#
53# Function to check the 'source' of a property. The source can
54# either be "default", "local", or "inherited from <parent dataset>".
55#
56# The 'expected src' argument must be either "default", "local", or
57# a dataset name.
58#
59# Returns 0 on success, 1 on failure.
60#
61function verify_prop_src # child_dataset property expected_src
62{
63        typeset target=$1
64        typeset prop=$2
65        typeset expected=$3
66
67        prop_src=`get_prop_src $prop $target`
68
69	#
70	# Rather than just checking if $prop_src == $expected
71	# we first determine what value $expected should have.
72	# This allows us to catch the case where a property
73	# has a source of "local" but we expected it to be
74	# "default"
75	#
76	if [[ $expected == "default" ]]; then
77		if [[ $prop_src != $expected ]]; then
78			log_note "Property $prop of $target has source"\
79				" $prop_src rather than $expected"
80			return 1
81		fi
82	elif [[ $expected == "local" ]]; then
83		if [[ $prop_src != $expected ]]; then
84			log_note "Property $prop of $target has source"\
85				" $prop_src rather than $expected"
86			return 1
87		fi
88	elif [[ $prop_src != "inherited from $expected" ]]; then
89		log_note "Property $prop of $expected has source $prop_src"\
90			" rather than 'inherited from $expected'"
91                return 1
92	fi
93
94	return 0
95}
96
97#
98# Simple function to set a property to a
99# specified value and verify it has changed
100# correctly.
101#
102function set_n_verify_prop #property value dataset
103{
104	typeset prop=$1
105	typeset prop_val=$2
106	typeset dataset=$3
107
108	$ZFS set $prop=$prop_val $dataset
109	check_val=`get_prop $prop $dataset`
110
111	if [[ $check_val != $prop_val ]]; then
112		log_fail "Property $prop of $dataset has value $check_val"\
113			" rather than $prop_val"
114	fi
115}
116