src/tests/large-dir2.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 #include <time.h>
  47
  48 #include <err.h>
  49
  50 static int
  51 creat_files(const char *dirname, int count)
  52 {
  53     struct stat sb;
  54     int i;
  55     DIR *d;
  56     struct dirent *dp;
  57
  58     srand(time(NULL));
  59
  60     if (mkdir(dirname, 0777) < 0)
  61         err(1, "mkdir %s", dirname);
  62
  63     if (chdir(dirname) < 0)
  64         err(1, "chdir %s", dirname);
  65     if (stat(".", &sb) < 0)
  66         err(1, "stat .");
  67 #if 0
  68     if (sb.st_size != 2048)
  69         errx(1, "size != 2048");
  70 #endif
  71     for (i = 0; i < count; ++i) {
  72         char fname[256];
  73         int len;
  74         int j;
  75         int fd;
  76
  77         len = 1 + rand() % (sizeof(fname) - 2);
  78
  79         for (j = 0; j < len; ++j)
  80             fname[j] = 'A' + rand() % ('z' - 'A');
  81         fname[j] = '\0';
  82
  83         fd = open(fname, O_CREAT | O_EXCL, 0777);
  84         if (fd < 0)
  85             err(1, "open %s", fname);
  86         if (close(fd) < 0)
  87             err(1, "close %s", fname);
  88     }
  89     if (stat(".", &sb) < 0)
  90         err(1, "stat .");
  91
  92     d = opendir(".");
  93     if (d == NULL)
  94         err(1, "opendir .");
  95     while ((dp = readdir(d)) != NULL) {
  96         if (strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0)
  97             continue;
  98
  99         if (unlink(dp->d_name) < 0)
 100             err(1, "unlink %s", dp->d_name);
 101     }
 102     closedir(d);
 103     if (chdir("..") < 0)
 104         err(1, "chdir ..");
 105     if (rmdir(dirname) < 0)
 106         err(1, "rmdir");
 107     return 0;
 108 }
 109
 110 static void
 111 usage(int ret)
 112 {
 113     fprintf(stderr, "%s directory number-of-files\n", __progname);
 114     exit(ret);
 115 }
 116
 117 int
 118 main(int argc, char **argv)
 119 {
 120     char *ptr;
 121     int count;
 122
 123
 124     if (argc != 3)
 125         usage(1);
 126
 127     count = strtol(argv[2], &ptr, 0);
 128     if (count == 0 && ptr == argv[2])
 129         errx(1, "'%s' not a number", argv[2]);
 130
 131     return creat_files(argv[1], count);
 132 }