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. $STF_SUITE/include/libtest.kshlib
27
28# ##########################################################################
29#
30# __stc_assertion_start
31#
32# ID: mmap_write_001_pos
33#
34# DESCRIPTION:
35# Writing to a file and mmaping that file at the
36# same time does not result in a deadlock.
37#
38# STRATEGY:
39# 1. Make sure this test executes on multi-processes system.
40# 2. Call mmapwrite binary.
41# 3. wait 120s and make sure the test file existed.
42#
43# TESTABILITY: explicit
44#
45# TEST_AUTOMATION_LEVEL: automated
46#
47# CODING_STATUS: COMPLETED (2005-07-04)
48#
49# __stc_assertion_end
50#
51################################################################################
52
53verify_runnable "both"
54
55# Default is 120 seconds or 2 minutes
56WAITTIME=${WAITTIME-120}
57
58log_assert "write()s to a file and mmap() that file at the same time does not "\
59	"result in a deadlock."
60
61# Detect and make sure this test must be executed on a multi-process system
62NCPUS=`sysctl -a | awk -F '"' '/cpu count="[0-9+]"/ {print $2; exit}'`
63if [[ $? -ne 0 || -z $NCPUS || $NCPUS -le 1 ]]; then
64	log_unsupported "This test must be executed on a multi-processor system."
65fi
66
67log_must $CHMOD 777 $TESTDIR
68$MMAPWRITE $TESTDIR/$TESTFILE &
69PID_MMAPWRITE=$!
70log_note "$MMAPWRITE $TESTDIR/$TESTFILE pid: $PID_MMAPWRITE"
71log_must $SLEEP 10
72
73typeset -i i=0
74while (( i < $WAITTIME )); do
75	if ! $PS -ef | $PGREP $MMAPWRITE > /dev/null ; then
76		log_must $WAIT $PID_MMAPWRITE
77		break
78	fi
79	$SLEEP 1
80	(( i += 1 ))
81done
82
83if $PS -ef | $PGREP $MMAPWRITE > /dev/null ; then
84	log_must $KILL -9 $PID_MMAPWRITE
85fi
86log_must $LS -l $TESTDIR/$TESTFILE
87
88log_pass "write(2) a mmap(2)'ing file succeeded."
89