tests/large-dir.c

   1 /*
   2  * Copyright (c) 1995, 1996, 1997, 1998, 1999 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 static int
  55 creat_files (const char *dirname, int count)
  56 {
  57     struct stat sb;
  58     int i;
  59     DIR *d;
  60     struct dirent *dp;
  61
  62     if (mkdir (dirname, 0777) < 0)
  63         err (1, "mkdir %s", dirname);
  64
  65     if (chdir (dirname) < 0)
  66         err (1, "chdir %s", dirname);
  67     if (stat (".", &sb) < 0)
  68         err (1, "stat .");
  69     if (sb.st_size != 2048)
  70         errx (1, "size != 2048");
  71     for (i = 0; i < count; ++i) {
  72         char num[17];
  73         int fd;
  74
  75         snprintf (num, sizeof(num), "%d", i);
  76
  77         fd = open (num, O_CREAT | O_EXCL, 0777);
  78         if (fd < 0)
  79             err (1, "open %s", num);
  80         if (close (fd) < 0)
  81             err (1, "close %s", num);
  82     }
  83     if (stat (".", &sb) < 0)
  84         err (1, "stat .");
  85
  86     d = opendir (".");
  87     if (d == NULL)
  88         err (1, "opendir .");
  89     for (i = -2; i < count; ++i) {
  90         char num[17];
  91
  92         dp = readdir (d);
  93         if (dp == NULL)
  94             errx (1, "out of entries at %d?", i);
  95         if (i == -2)
  96             strlcpy (num, ".", sizeof(num));
  97         else if (i == -1)
  98             strlcpy (num, "..", sizeof(num));
  99         else
 100             snprintf (num, sizeof(num), "%d", i);
 101         if (strcmp (num, dp->d_name) != 0)
 102             errx (1, "'%s' != '%s'", num, dp->d_name);
 103     }
 104     if (readdir (d) != NULL)
 105         errx (1, "more entries?");
 106     closedir (d);
 107     for (i = 0; i < count; ++i) {
 108         char num[17];
 109
 110         snprintf (num, sizeof(num), "%d", i);
 111
 112         if (unlink (num) < 0)
 113             err (1, "unlink %s", num);
 114     }
 115     d = opendir (".");
 116     if (d == NULL)
 117         err (1, "opendir .");
 118     dp = readdir (d);
 119     if (dp == NULL || strcmp (dp->d_name, ".") != 0)
 120         errx (1, "where's .?");
 121     dp = readdir (d);
 122     if (dp == NULL || strcmp (dp->d_name, "..") != 0)
 123         errx (1, "where's ..?");
 124     if (readdir (d) != NULL)
 125         errx (1, "even more entries?");
 126     closedir (d);
 127     if (stat (".", &sb) < 0)
 128         err (1, "stat .");
 129 #if 0
 130     if (sb.st_size != 2048)
 131         errx (1, "size != 2048");
 132 #endif
 133     return 0;
 134 }
 135
 136 static void
 137 usage (int ret)
 138 {
 139     fprintf (stderr, "%s directory number-of-files\n", getprogname());
 140     exit (ret);
 141 }
 142
 143 int
 144 main(int argc, char **argv)
 145 {
 146     char *ptr;
 147     int count;
 148
 149     setprogname (argv[0]);
 150
 151     if (argc != 3)
 152         usage (1);
 153
 154     count = strtol (argv[2], &ptr, 0);
 155     if (count == 0 && ptr == argv[2])
 156         errx (1, "'%s' not a number", argv[2]);
 157
 158     return creat_files (argv[1], count);
 159 }