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  * Copyright (c) 2012 by Delphix. All rights reserved.
29  */
30 
31 /*
32  * Assertion:
33  * Create two directory trees in zfs filesystem, and rename
34  * directory across the directory structure. ZFS can handle
35  * the race situation.
36  */
37 
38 /*
39  * Need to create the following directory structures before
40  * running this program:
41  *
42  * mkdir -p 1/2/3/4/5 a/b/c/d/e
43  */
44 
45 
46 #include <stdlib.h>
47 #include <unistd.h>
48 #include <stdio.h>
49 #include <strings.h>
50 
51 int
52 main()
53 {
54 	int i = 1;
55 
56 	switch (fork()) {
57 	case -1:
58 		perror("fork");
59 		exit(1);
60 		break;
61 	case 0:
62 		while (i > 0) {
63 			int c_count = 0;
64 			if (rename("a/b/c", "1/2/3/c") == 0)
65 				c_count++;
66 			if (rename("1/2/3/c", "a/b/c") == 0)
67 				c_count++;
68 			if (c_count) {
69 				(void) fprintf(stderr, "c_count: %d", c_count);
70 			}
71 		}
72 		break;
73 	default:
74 		while (i > 0) {
75 			int p_count = 0;
76 			if (rename("1", "a/b/c/d/e/1") == 0)
77 				p_count++;
78 			if (rename("a/b/c/d/e/1", "1") == 0)
79 				p_count++;
80 			if (p_count) {
81 				(void) fprintf(stderr, "p_count: %d", p_count);
82 			}
83 		}
84 		break;
85 	}
86 
87 	return (0);
88 }
89