src/tests/rename5.c

   1 /*
   2  * Copyright (c) 2000 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifdef HAVE_CONFIG_H
  35 #include <config.h>
  36 #endif
  37
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <errno.h>
  42
  43 #include <sys/types.h>
  44 #include <sys/stat.h>
  45 #include <sys/mman.h>
  46 #include <fcntl.h>
  47 #include <unistd.h>
  48 #include <dirent.h>
  49
  50
  51 #include <err.h>
  52
  53 static void
  54 emkdir(const char *path, mode_t mode)
  55 {
  56     int ret;
  57
  58     ret = mkdir(path, mode);
  59     if (ret < 0)
  60         err(1, "mkdir %s", path);
  61 }
  62
  63 static void
  64 elstat(const char *path, struct stat *sb)
  65 {
  66     int ret;
  67
  68     ret = lstat(path, sb);
  69     if (ret < 0)
  70         err(1, "lstat %s", path);
  71 }
  72
  73 static void
  74 check_inum(const struct stat *sb1, const struct stat *sb2)
  75 {
  76     if (sb1->st_ino != sb2->st_ino)
  77         errx(1, "wrong inode-number %u != %u", (unsigned)sb1->st_ino,
  78              (unsigned)sb2->st_ino);
  79 }
  80
  81 int
  82 main(int argc, char **argv)
  83 {
  84     int ret;
  85     struct stat old_sb, new_sb, dot_sb;
  86
  87     emkdir("old_parent", 0777);
  88     emkdir("new_parent", 0777);
  89     emkdir("old_parent/victim", 0777);
  90
  91     elstat("old_parent", &old_sb);
  92     elstat("new_parent", &new_sb);
  93     elstat("old_parent/victim/..", &dot_sb);
  94     check_inum(&old_sb, &dot_sb);
  95
  96     ret = rename("old_parent/victim", "new_parent/victim");
  97     if (ret < 0)
  98         err(1, "rename old_parent/victim new_parent/victim");
  99
 100     elstat("new_parent/victim/..", &dot_sb);
 101
 102     check_inum(&new_sb, &dot_sb);
 103
 104     return 0;
 105 }