1 /**

     2  * test/demos/files.c

     3  * Copyright (C) Markus Broeker

     4  */

     5 

     6 #include <stdio.h>

     7 #include <stdlib.h>

     8 #include <unistd.h>

     9 #include <fcntl.h>

    10 #include <sys/types.h>

    11 #include <sys/stat.h>

    12 #include <time.h>

    13 

    14 #define  MAXDIRS 1000

    15 #define MAXFILES 1000

    16 

    17 #define GETRANDOM(max) (1+(int)((float)max*rand()/RAND_MAX+1.0))

    18 

    19 char *GetRandomNumberString ()

    20 {

    21     static char buffer[12];

    22 

    23     sprintf (buffer, "%d", GETRANDOM (65535));

    24 

    25     return buffer;

    26 }

    27 

    28 int main (int argc, char **argv)

    29 {

    30     int i, j;

    31     int fd;

    32     char *s;

    33 

    34     if (argc != 2) {

    35         printf ("Usage: %s <basedir>\n", argv[0]);

    36         return EXIT_FAILURE;

    37     }

    38 

    39     if (chdir (argv[1]) == -1) {

    40         printf ("Initial Chdir to %s failed, aborting...\n", argv[1]);

    41         return EXIT_FAILURE;

    42     }

    43 

    44     srand (time (NULL));

    45 

    46     for (i = 0; i < MAXDIRS; i++) {

    47         s = GetRandomNumberString ();

    48         mkdir (s, 0777);

    49         if (chdir (s) == -1) {

    50             printf ("Chdir to %s failed, aborting\n", s);

    51             return EXIT_FAILURE;

    52         }

    53         for (j = 0; j < MAXFILES; j++) {

    54             s = GetRandomNumberString ();

    55             if ((fd = open (s, O_RDWR | O_CREAT, 0666)) < 3) {

    56                 perror ("CREATE");

    57                 return EXIT_FAILURE;

    58             }

    59             close (fd);

    60         }

    61         chdir ("..");

    62     }

    63     return EXIT_SUCCESS;

    64 }