usr/src/test/libc-tests/tests/random/getrandred.c

   1 /*
   2  * This file and its contents are supplied under the terms of the
   3  * Common Development and Distribution License ("CDDL"), version 1.0.
   4  * You may only use this file in accordance with the terms of version
   5  * 1.0 of the CDDL.
   6  *
   7  * A full copy of the text of the CDDL should have accompanied this
   8  * source.  A copy of the CDDL is also available via the Internet at
   9  * http://www.illumos.org/license/CDDL.
  10  */
  11
  12 /*
  13  * Copyright 2015 Joyent, Inc.
  14  */
  15
  16 /*
  17  * Regression test for illumos#5843.
  18  */
  19
  20 #include <string.h>
  21 #include <stdlib.h>
  22 #include <sys/random.h>
  23
  24 #define NTRIES 5
  25 #define NOFF    128
  26 #define NBYTES  223
  27
  28 int
  29 main(void)
  30 {
  31         int i;
  32         char buf[1024];
  33
  34         (void) memset(buf, 'a', sizeof (buf));
  35
  36         /*
  37          * Try to go ahead and corrupt ourselves NTRIES times.
  38          */
  39         for (i = 0; i < NTRIES; i++) {
  40                 (void) getrandom(buf + NOFF, NBYTES, 0);
  41         }
  42
  43         for (i = 0; i < NOFF; i++) {
  44                 if (buf[i] != 'a')
  45                         abort();
  46         }
  47
  48         for (i = NBYTES + NOFF; i < sizeof (buf); i++) {
  49                 if (buf[i] != 'a')
  50                         abort();
  51         }
  52
  53         return (0);
  54 }