tests/large-dir2.c

   1 /*
   2  * Copyright (c) 1995-1999, 2002, 2006 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     srand (time (NULL));
  63
  64     if (mkdir (dirname, 0777) < 0)
  65         err (1, "mkdir %s", dirname);
  66
  67     if (chdir (dirname) < 0)
  68         err (1, "chdir %s", dirname);
  69     if (stat (".", &sb) < 0)
  70         err (1, "stat .");
  71
  72     for (i = 0; i < count; ++i) {
  73         char fname[256];
  74         int len;
  75         int j;
  76         int fd;
  77
  78         len = 1 + rand () % (sizeof(fname) - 2);
  79
  80         for (j = 0; j < len; ++j)
  81             fname[j] = 'A' + rand() % ('z' - 'A');
  82         fname[j] = '\0';
  83
  84         fd = open (fname, O_CREAT | O_EXCL, 0777);
  85         if (fd < 0) {
  86             /* We sometimes get collisions; if so, try again. */
  87             if (errno == EEXIST) {
  88                 i--;
  89                 continue;
  90             }
  91             err (1, "open %s", fname);
  92         }
  93
  94         if (close (fd) < 0)
  95             err (1, "close %s", fname);
  96     }
  97
  98     if (stat (".", &sb) < 0)
  99         err (1, "stat .");
 100
 101     d = opendir (".");
 102     if (d == NULL)
 103         err (1, "opendir .");
 104
 105     i = 0;
 106     while ((dp = readdir (d)) != NULL) {
 107         if (strcmp (dp->d_name, ".") == 0
 108             || strcmp (dp->d_name, "..") == 0)
 109             continue;
 110
 111         if (unlink (dp->d_name) < 0)
 112             err (1, "unlink %s", dp->d_name);
 113         i++;
 114     }
 115     closedir (d);
 116
 117     if (i != count)
 118         errx(1, "removed %d entries, %d expected", i, count);
 119
 120     if (chdir ("..") < 0)
 121         err (1, "chdir ..");
 122     if (rmdir (dirname) < 0)
 123         err (1, "rmdir");
 124
 125     return 0;
 126 }
 127
 128 static void
 129 usage (int ret)
 130 {
 131     fprintf (stderr, "%s directory number-of-files\n", getprogname());
 132     exit (ret);
 133 }
 134
 135 int
 136 main(int argc, char **argv)
 137 {
 138     char *ptr;
 139     int count;
 140
 141     setprogname (argv[0]);
 142
 143     if (argc != 3)
 144         usage (1);
 145
 146     count = strtol (argv[2], &ptr, 0);
 147     if (count == 0 && ptr == argv[2])
 148         errx (1, "'%s' not a number", argv[2]);
 149
 150     return creat_files (argv[1], count);
 151 }