1#!/usr/local/bin/ksh93 -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 2007 Sun Microsystems, Inc.  All rights reserved.
25# Use is subject to license terms.
26. $STF_SUITE/include/libtest.kshlib
27
28################################################################################
29#
30# __stc_assertion_start
31#
32# ID: link_count_001
33#
34# DESCRIPTION:
35# Verify file link count is zero on zfs
36#
37# STRATEGY:
38# 1. Make sure this test executes on multi-processes system
39# 2. Make zero size files and remove them in the background
40# 3. Call the binary
41# 4. Make sure the files can be removed successfully
42#
43# TESTABILITY: explicit
44#
45# TEST_AUTOMATION_LEVEL: automated
46#
47# CODING_STATUS: COMPLETED (2006-07-13)
48#
49# __stc_assertion_end
50#
51################################################################################
52
53verify_runnable "both"
54
55log_assert "Verify file link count is zero on zfs"
56
57# Detect and make sure this test must be executed on a multi-process system
58NCPUS=`sysctl -n kern.smp.cpus`
59#NCPUS=`sysctl -a | awk -F '"' '/cpu count="[0-9+]"/ {print $2; exit}'`
60if [[ $? -ne 0 || -z "$NCPUS" || "$NCPUS" -le 1 ]]; then
61	log_unsupported "This test must be executed on a multi-processor system."
62fi
63
64log_must $MKDIR -p ${TESTDIR}/tmp
65
66typeset -i i=0
67while [ $i -lt $NUMFILES ]; do
68        (( i = i + 1 ))
69        $TOUCH ${TESTDIR}/tmp/x$i > /dev/null 2>&1
70done
71
72sleep 3
73
74$RM -f ${TESTDIR}/tmp/x* >/dev/null 2>&1
75
76$RM_LNKCNT_ZERO_FILE ${TESTDIR}/tmp/test${TESTCASE_ID} > /dev/null 2>&1 &
77PID=$!
78log_note "$RM_LNKCNT_ZERO_FILE ${TESTDIR}/tmp/test${TESTCASE_ID} pid: $PID"
79
80i=0
81while [ $i -lt $ITERS ]; do
82	if ! $PGREP $RM_LNKCNT_ZERO_FILE > /dev/null ; then
83		log_note "$RM_LNKCNT_ZERO_FILE completes"
84		break
85	fi
86	log_must $SLEEP 10
87	(( i = i + 1 ))
88done
89
90if $PGREP $RM_LNKCNT_ZERO_FILE > /dev/null; then
91	log_must $KILL -9 $PID
92	log_fail "file link count is zero"
93fi
94
95log_must $RM -f ${TESTDIR}/tmp/test${TESTCASE_ID}*
96
97log_pass "Verify file link count is zero on zfs"
98