usr/test/zero/zero.c

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This source file includes following definitions.
dump_buf
main
   1 /*
   2  * Copyright (c) 2005, Kohsuke Ohtani
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the author nor the names of any co-contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29 
  30 /*
  31  * zero.c - test zero device driver.
  32  */
  33 
  34 #include <sys/prex.h>
  35 #include <stdio.h>
  36 #include <string.h>
  37 
  38 static char buf[100];
  39 
  40 void
  41 dump_buf(void)
  42 {
  43         int i;
  44 
  45         for (i = 0; i < 100; i++)
  46                 putchar(buf[i]);
  47         putchar('\n');
  48 }
  49 
  50 int
  51 main(int argc, char *argv[])
  52 {
  53         device_t zero_dev;
  54         int i, error;
  55         size_t len;
  56 
  57         printf("zero test\n");
  58 
  59         /* 0000000000111111111122222.... */
  60         for (i = 0; i < 100; i++)
  61                 buf[i] = '0' + i / 10;
  62         dump_buf();
  63 
  64         error = device_open("zero", 0, &zero_dev);
  65         if (error)
  66                 printf("device open error!\n");
  67 
  68         /* zero fill 50 character */
  69         len = 50;
  70         error = device_read(zero_dev, buf, &len, 0);
  71         if (error)
  72                 printf("device read error!\n"); 
  73 
  74         /* 5555555555666666666777... */
  75         dump_buf();
  76 
  77         return 0;
  78 }
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root/usr/test/zero/zero.c

DEFINITIONS
