1*2fae26bdSAlan Somers /*
2*2fae26bdSAlan Somers * CDDL HEADER START
3*2fae26bdSAlan Somers *
4*2fae26bdSAlan Somers * The contents of this file are subject to the terms of the
5*2fae26bdSAlan Somers * Common Development and Distribution License (the "License").
6*2fae26bdSAlan Somers * You may not use this file except in compliance with the License.
7*2fae26bdSAlan Somers *
8*2fae26bdSAlan Somers * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*2fae26bdSAlan Somers * or http://www.opensolaris.org/os/licensing.
10*2fae26bdSAlan Somers * See the License for the specific language governing permissions
11*2fae26bdSAlan Somers * and limitations under the License.
12*2fae26bdSAlan Somers *
13*2fae26bdSAlan Somers * When distributing Covered Code, include this CDDL HEADER in each
14*2fae26bdSAlan Somers * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*2fae26bdSAlan Somers * If applicable, add the following below this CDDL HEADER, with the
16*2fae26bdSAlan Somers * fields enclosed by brackets "[]" replaced with your own identifying
17*2fae26bdSAlan Somers * information: Portions Copyright [yyyy] [name of copyright owner]
18*2fae26bdSAlan Somers *
19*2fae26bdSAlan Somers * CDDL HEADER END
20*2fae26bdSAlan Somers */
21*2fae26bdSAlan Somers
22*2fae26bdSAlan Somers /*
23*2fae26bdSAlan Somers * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
24*2fae26bdSAlan Somers * Use is subject to license terms.
25*2fae26bdSAlan Somers */
26*2fae26bdSAlan Somers
27*2fae26bdSAlan Somers
28*2fae26bdSAlan Somers /*
29*2fae26bdSAlan Somers * Assertion:
30*2fae26bdSAlan Somers * Create two directory trees in zfs filesystem, and rename
31*2fae26bdSAlan Somers * directory across the directory structure. ZFS can handle
32*2fae26bdSAlan Somers * the race situation.
33*2fae26bdSAlan Somers */
34*2fae26bdSAlan Somers
35*2fae26bdSAlan Somers /*
36*2fae26bdSAlan Somers * Need to create the following directory structures before
37*2fae26bdSAlan Somers * running this program:
38*2fae26bdSAlan Somers *
39*2fae26bdSAlan Somers * mkdir -p 1/2/3/4/5 a/b/c/d/e
40*2fae26bdSAlan Somers */
41*2fae26bdSAlan Somers
42*2fae26bdSAlan Somers
43*2fae26bdSAlan Somers #include <stdlib.h>
44*2fae26bdSAlan Somers #include <unistd.h>
45*2fae26bdSAlan Somers #include <stdio.h>
46*2fae26bdSAlan Somers #include <string.h>
47*2fae26bdSAlan Somers
48*2fae26bdSAlan Somers int
main()49*2fae26bdSAlan Somers main()
50*2fae26bdSAlan Somers {
51*2fae26bdSAlan Somers int i = 1;
52*2fae26bdSAlan Somers char buf[256];
53*2fae26bdSAlan Somers char *msg = "rename() fails to handle race situation\n";
54*2fae26bdSAlan Somers
55*2fae26bdSAlan Somers switch (fork()) {
56*2fae26bdSAlan Somers case -1:
57*2fae26bdSAlan Somers perror("fork");
58*2fae26bdSAlan Somers exit(1);
59*2fae26bdSAlan Somers break;
60*2fae26bdSAlan Somers case 0:
61*2fae26bdSAlan Somers while (i > 0) {
62*2fae26bdSAlan Somers int c_count = 0;
63*2fae26bdSAlan Somers if (rename("a/b/c", "1/2/3/c") == 0)
64*2fae26bdSAlan Somers c_count++;
65*2fae26bdSAlan Somers if (rename("1/2/3/c", "a/b/c") == 0)
66*2fae26bdSAlan Somers c_count++;
67*2fae26bdSAlan Somers if (c_count) {
68*2fae26bdSAlan Somers (void) strlcat(buf, "c_count: %d,", 256);
69*2fae26bdSAlan Somers (void) strlcat(buf, msg, 256);
70*2fae26bdSAlan Somers (void) fprintf(stderr, buf, c_count);
71*2fae26bdSAlan Somers }
72*2fae26bdSAlan Somers }
73*2fae26bdSAlan Somers break;
74*2fae26bdSAlan Somers default:
75*2fae26bdSAlan Somers while (i > 0) {
76*2fae26bdSAlan Somers int p_count = 0;
77*2fae26bdSAlan Somers if (rename("1", "a/b/c/d/e/1") == 0)
78*2fae26bdSAlan Somers p_count++;
79*2fae26bdSAlan Somers if (rename("a/b/c/d/e/1", "1") == 0)
80*2fae26bdSAlan Somers p_count++;
81*2fae26bdSAlan Somers if (p_count) {
82*2fae26bdSAlan Somers (void) strlcat(buf, "p_count: %d,", 256);
83*2fae26bdSAlan Somers (void) strlcat(buf, msg, 256);
84*2fae26bdSAlan Somers (void) fprintf(stderr, buf, p_count);
85*2fae26bdSAlan Somers }
86*2fae26bdSAlan Somers }
87*2fae26bdSAlan Somers break;
88*2fae26bdSAlan Somers }
89*2fae26bdSAlan Somers return (0);
90*2fae26bdSAlan Somers }
91