src/tests/hardlink4.c

   1 /*
   2  * Copyright (c) 1999 - 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 <unistd.h>
  40 #include <fcntl.h>
  41 #include <sys/types.h>
  42 #include <sys/stat.h>
  43
  44 #include <err.h>
  45
  46 int
  47 main(int argc, char *argv[])
  48 {
  49     int fd1;
  50     int ret;
  51     struct stat sb1;
  52
  53
  54     ret = mkdir("1", 0777);
  55     if (ret < 0)
  56         err(1, "mkdir 1");
  57
  58     ret = mkdir("2", 0777);
  59     if (ret < 0)
  60         err(1, "mkdir 2");
  61
  62     fd1 = open("1/foo", O_RDWR | O_CREAT, 0666);
  63     if (fd1 < 0)
  64         err(1, "open 1/foo");
  65
  66     ret = fstat(fd1, &sb1);
  67     if (ret < 0)
  68         err(1, "stat foo");
  69
  70     if (sb1.st_nlink != 1)
  71         errx(1, "foo.st_nlink != 1");
  72
  73     ret = close(fd1);
  74     if (ret < 0)
  75         err(1, "close 1/foo");
  76
  77     ret = link("1/foo", "2/foo");
  78     if (ret == 0)
  79         unlink("2/foo");
  80     if (ret < 0 && errno != EXDEV)
  81         err(1, "link 1/foo, 2/foo");
  82
  83     ret = unlink("1/foo");
  84     if (ret < 0)
  85         err(1, "unlink 1/foo");
  86
  87     ret = rmdir("1");
  88     if (ret < 0)
  89         err(1, "rmdir 1");
  90
  91     ret = rmdir("2");
  92     if (ret < 0)
  93         err(1, "rmdir 2");
  94     return 0;
  95 }