compiler/clib/setvbuf.c

   1 /*
   2     Copyright © 1995-2003, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     ANSI C function setvbuf().
   6 */
   7
   8 #include <dos/stdio.h>
   9 #include <proto/dos.h>
  10 #include <errno.h>
  11 #include "__open.h"
  12
  13 /*****************************************************************************
  14
  15     NAME */
  16 #include <stdio.h>
  17
  18         int setvbuf (
  19
  20 /*  SYNOPSIS */
  21         FILE *stream,
  22         char *buf,
  23         int mode,
  24         size_t size)
  25
  26 /*  FUNCTION
  27
  28     INPUTS
  29
  30     RESULT
  31
  32     NOTES
  33
  34     EXAMPLE
  35
  36     BUGS
  37
  38     SEE ALSO
  39
  40     INTERNALS
  41
  42 ******************************************************************************/
  43 {
  44     fdesc *desc;
  45
  46     if (!stream)
  47     {
  48         errno = EFAULT;
  49         return EOF;
  50     }
  51
  52     switch (mode)
  53     {
  54         case _IOFBF: mode = BUF_FULL; break;
  55         case _IOLBF: mode = BUF_LINE; break;
  56         case _IONBF: mode = BUF_NONE; break;
  57         default:
  58             errno = EINVAL;
  59             return EOF;
  60     }
  61
  62     desc = __getfdesc(stream->fd);
  63     if (!desc)
  64     {
  65         errno = EBADF;
  66         return EOF;
  67     }
  68
  69     return SetVBuf(desc->fh, buf, mode, size ? size : -1);
  70 } /* setvbuf */
  71