tests/symlink.c

   1 /*
   2  * Copyright (c) 1999 - 2000, 2005 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 <sys/types.h>
  42 #include <sys/stat.h>
  43 #include <fcntl.h>
  44 #include <unistd.h>
  45 #include <dirent.h>
  46
  47 #include <err.h>
  48 #include <roken.h>
  49
  50 #ifdef RCSID
  51 RCSID("$Id$");
  52 #endif
  53
  54 int
  55 main(int argc, char **argv)
  56 {
  57     int ret;
  58     struct stat sb;
  59     char buf[MAXPATHLEN];
  60
  61     setprogname (argv[0]);
  62
  63     ret = symlink ("foo", "bar");
  64     if (ret < 0)
  65         err (1, "symlink foo,bar");
  66     ret = lstat ("bar", &sb);
  67     if (ret < 0)
  68         err (1, "lstat bar");
  69     if ((sb.st_mode & S_IFLNK) != S_IFLNK)
  70         errx (1, "bar is not symlink");
  71
  72     ret = readlink("bar", buf, sizeof(buf) - 1);
  73     if (ret < 0)
  74         err (1, "readlink bar");
  75
  76     buf[ret] = '\0';
  77     if (strcmp("foo", buf))
  78         err (1, "strcmp");
  79     ret = unlink ("bar");
  80     if (ret < 0)
  81         err (1, "unlink bar");
  82     return 0;
  83 }