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
48 int
main()49 main()
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