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 * $FreeBSD$ 21 */ 22 23 /* 24 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27 28 #pragma ident "@(#)rename_dir.c 1.1 07/05/25 SMI" 29 30 /* 31 * Assertion: 32 * Create two directory trees in zfs filesystem, and rename 33 * directory across the directory structure. ZFS can handle 34 * the race situation. 35 */ 36 37 /* 38 * Need to create the following directory structures before 39 * running this program: 40 * 41 * mkdir -p 1/2/3/4/5 a/b/c/d/e 42 */ 43 44 45 #include <stdlib.h> 46 #include <unistd.h> 47 #include <stdio.h> 48 #include <string.h> 49 50 int 51 main() 52 { 53 int i = 1; 54 char buf[256]; 55 char *msg = "rename() fails to handle race situation\n"; 56 57 switch (fork()) { 58 case -1: 59 perror("fork"); 60 exit(1); 61 break; 62 case 0: 63 while (i > 0) { 64 int c_count = 0; 65 if (rename("a/b/c", "1/2/3/c") == 0) 66 c_count++; 67 if (rename("1/2/3/c", "a/b/c") == 0) 68 c_count++; 69 if (c_count) { 70 (void) strlcat(buf, "c_count: %d,", 256); 71 (void) strlcat(buf, msg, 256); 72 (void) fprintf(stderr, buf, c_count); 73 } 74 } 75 break; 76 default: 77 while (i > 0) { 78 int p_count = 0; 79 if (rename("1", "a/b/c/d/e/1") == 0) 80 p_count++; 81 if (rename("a/b/c/d/e/1", "1") == 0) 82 p_count++; 83 if (p_count) { 84 (void) strlcat(buf, "p_count: %d,", 256); 85 (void) strlcat(buf, msg, 256); 86 (void) fprintf(stderr, buf, p_count); 87 } 88 } 89 break; 90 } 91 return (0); 92 } 93