tests/readdir-vs-lstat.c

   1 /*
   2  * Copyright (c) 1995 - 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 <sys/types.h>
  42 #include <sys/stat.h>
  43 #include <fcntl.h>
  44 #include <unistd.h>
  45 #include <dirent.h>
  46 #include <errno.h>
  47
  48 #include <err.h>
  49 #include <roken.h>
  50
  51 #ifdef RCSID
  52 RCSID("$Id$");
  53 #endif
  54
  55 static int
  56 verify_inodes (const char *dirname)
  57 {
  58     DIR *d;
  59     struct dirent *dp;
  60
  61     if (chdir (dirname) < 0)
  62         err (1, "chdir %s", dirname);
  63
  64     d = opendir (".");
  65     if (d == NULL)
  66         err (1, "opendir %s", dirname);
  67     while ((dp = readdir (d)) != NULL) {
  68         struct stat sb;
  69
  70         if (lstat (dp->d_name, &sb) < 0) {
  71             if (errno == EACCES)
  72                 continue;
  73             err (1, "lstat %s", dp->d_name);
  74         }
  75         if (dp->d_ino != sb.st_ino)
  76             errx (1, "%s: inode %u != %u", dp->d_name,
  77                   (unsigned)dp->d_ino, (unsigned)sb.st_ino);
  78     }
  79     closedir (d);
  80     return 0;
  81 }
  82
  83 static void
  84 usage (int ret)
  85 {
  86     fprintf (stderr, "%s [directory]\n", getprogname());
  87     exit (ret);
  88 }
  89
  90 int
  91 main(int argc, char **argv)
  92 {
  93     char *name = ".";
  94
  95     setprogname (argv[0]);
  96
  97     if (argc > 2)
  98         usage (1);
  99
 100     if (argc > 1)
 101         name = argv[1];
 102
 103     return verify_inodes (name);
 104 }