1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27
28/*
29 * Assertion:
30 * Create two directory trees in zfs filesystem, and rename
31 * directory across the directory structure. ZFS can handle
32 * the race situation.
33 */
34
35/*
36 * Need to create the following directory structures before
37 * running this program:
38 *
39 * mkdir -p 1/2/3/4/5 a/b/c/d/e
40 */
41
42
43#include <stdlib.h>
44#include <unistd.h>
45#include <stdio.h>
46#include <string.h>
47
48int
49main()
50{
51	int i = 1;
52	char buf[256];
53	char *msg = "rename() fails to handle race situation\n";
54
55	switch (fork()) {
56	case -1:
57		perror("fork");
58		exit(1);
59		break;
60	case 0:
61		while (i > 0) {
62			int c_count = 0;
63			if (rename("a/b/c", "1/2/3/c") == 0)
64				c_count++;
65			if (rename("1/2/3/c", "a/b/c") == 0)
66				c_count++;
67			if (c_count) {
68				(void) strlcat(buf, "c_count: %d,", 256);
69				(void) strlcat(buf, msg, 256);
70				(void) fprintf(stderr, buf, c_count);
71			}
72		}
73		break;
74	default:
75		while (i > 0) {
76			int p_count = 0;
77			if (rename("1", "a/b/c/d/e/1") == 0)
78				p_count++;
79			if (rename("a/b/c/d/e/1", "1") == 0)
80				p_count++;
81			if (p_count) {
82				(void) strlcat(buf, "p_count: %d,", 256);
83				(void) strlcat(buf, msg, 256);
84				(void) fprintf(stderr, buf, p_count);
85			}
86		}
87		break;
88	}
89	return (0);
90}
91