compiler/clib/write.c

   1 /*
   2     Copyright © 1995-2012, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     POSIX.1-2008 function write().
   6 */
   7
   8 #include <errno.h>
   9 #include <dos/dos.h>
  10 #include <dos/dosextens.h>
  11 #include <proto/exec.h>
  12 #include <proto/dos.h>
  13 #include "__fdesc.h"
  14
  15 /*****************************************************************************
  16
  17     NAME */
  18 #include <unistd.h>
  19
  20         ssize_t write (
  21
  22 /*  SYNOPSIS */
  23         int          fd,
  24         const void * buf,
  25         size_t       count)
  26
  27 /*  FUNCTION
  28         Write an amount of characters to the specified file descriptor.
  29
  30     INPUTS
  31         fd - The file descriptor to write to
  32         buf - Write these bytes into the file descriptor
  33         count - Write that many bytes
  34
  35     RESULT
  36         The number of characters written or -1 on error.
  37
  38     NOTES
  39
  40     EXAMPLE
  41
  42     BUGS
  43
  44     SEE ALSO
  45
  46     INTERNALS
  47
  48 ******************************************************************************/
  49 {
  50     ssize_t cnt;
  51
  52     fdesc *fdesc = __getfdesc(fd);
  53     if (!fdesc)
  54     {
  55         errno = EBADF;
  56         return -1;
  57     }
  58
  59     cnt = Write ((BPTR)fdesc->fcb->fh, (void *)buf, count);
  60
  61     if (cnt == -1)
  62         errno = __arosc_ioerr2errno (IoErr ());
  63
  64     return cnt;
  65 } /* write */
  66