tests/zfs-tests/cmd/rename_dir.c

   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 https://opensource.org/licenses/CDDL-1.0.
  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
  50 int
  51 main(void)
  52 {
  53         int i = 1;
  54
  55         switch (fork()) {
  56         case -1:
  57                 perror("fork");
  58                 exit(1);
  59                 break;
  60
  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                 _exit(0);
  72
  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                 return (0);
  84         }
  85 }