src/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
  49 static int
  50 creat_files(const char *dirname, int count)
  51 {
  52     struct stat sb;
  53     int i;
  54     DIR *d;
  55     struct dirent *dp;
  56
  57     if (mkdir(dirname, 0777) < 0)
  58         err(1, "mkdir %s", dirname);
  59
  60     if (chdir(dirname) < 0)
  61         err(1, "chdir %s", dirname);
  62     if (stat(".", &sb) < 0)
  63         err(1, "stat .");
  64     if (sb.st_size != 2048)
  65         errx(1, "size != 2048");
  66     for (i = 0; i < count; ++i) {
  67         char num[17];
  68         int fd;
  69
  70         snprintf(num, sizeof(num), "%d", i);
  71
  72         fd = open(num, O_CREAT | O_EXCL, 0777);
  73         if (fd < 0)
  74             err(1, "open %s", num);
  75         if (close(fd) < 0)
  76             err(1, "close %s", num);
  77     }
  78     if (stat(".", &sb) < 0)
  79         err(1, "stat .");
  80
  81     d = opendir(".");
  82     if (d == NULL)
  83         err(1, "opendir .");
  84     for (i = -2; i < count; ++i) {
  85         char num[17];
  86
  87         dp = readdir(d);
  88         if (dp == NULL)
  89             errx(1, "out of entries at %d?", i);
  90         if (i == -2)
  91             strcpy(num, ".");
  92         else if (i == -1)
  93             strcpy(num, "..");
  94         else
  95             snprintf(num, sizeof(num), "%d", i);
  96         if (strcmp(num, dp->d_name) != 0)
  97             errx(1, "'%s' != '%s'", num, dp->d_name);
  98     }
  99     if (readdir(d) != NULL)
 100         errx(1, "more entries?");
 101     closedir(d);
 102     for (i = 0; i < count; ++i) {
 103         char num[17];
 104
 105         snprintf(num, sizeof(num), "%d", i);
 106
 107         if (unlink(num) < 0)
 108             err(1, "unlink %s", num);
 109     }
 110     d = opendir(".");
 111     if (d == NULL)
 112         err(1, "opendir .");
 113     dp = readdir(d);
 114     if (dp == NULL || strcmp(dp->d_name, ".") != 0)
 115         errx(1, "where's .?");
 116     dp = readdir(d);
 117     if (dp == NULL || strcmp(dp->d_name, "..") != 0)
 118         errx(1, "where's ..?");
 119     if (readdir(d) != NULL)
 120         errx(1, "even more entries?");
 121     closedir(d);
 122     if (stat(".", &sb) < 0)
 123         err(1, "stat .");
 124 #if 0
 125     if (sb.st_size != 2048)
 126         errx(1, "size != 2048");
 127 #endif
 128     return 0;
 129 }
 130
 131 static void
 132 usage(int ret)
 133 {
 134     fprintf(stderr, "%s directory number-of-files\n", __progname);
 135     exit(ret);
 136 }
 137
 138 int
 139 main(int argc, char **argv)
 140 {
 141     char *ptr;
 142     int count;
 143
 144
 145     if (argc != 3)
 146         usage(1);
 147
 148     count = strtol(argv[2], &ptr, 0);
 149     if (count == 0 && ptr == argv[2])
 150         errx(1, "'%s' not a number", argv[2]);
 151
 152     return creat_files(argv[1], count);
 153 }