| 0,0 → 1,62 |
|---|
| /* |
| * Copyright (c) 1990 The Regents of the University of California. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms are permitted |
| * provided that the above copyright notice and this paragraph are |
| * duplicated in all such forms and that any documentation, |
| * advertising materials, and other materials related to such |
| * distribution and use acknowledge that the software was developed |
| * by the University of California, Berkeley. The name of the |
| * University may not be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| */ |
| |
| /* |
| FUNCTION |
| <<fileno>>---return file descriptor associated with stream |
| |
| INDEX |
| fileno |
| |
| ANSI_SYNOPSIS |
| #include <stdio.h> |
| int fileno(FILE *<[fp]>); |
| |
| TRAD_SYNOPSIS |
| #include <stdio.h> |
| int fileno(<[fp]>) |
| FILE *<[fp]>; |
| |
| DESCRIPTION |
| You can use <<fileno>> to return the file descriptor identified by <[fp]>. |
| |
| RETURNS |
| <<fileno>> returns a non-negative integer when successful. |
| If <[fp]> is not an open stream, <<fileno>> returns -1. |
| |
| PORTABILITY |
| <<fileno>> is not part of ANSI C. |
| POSIX requires <<fileno>>. |
| |
| Supporting OS subroutines required: none. |
| */ |
| |
| #include <_ansi.h> |
| #include <stdio.h> |
| #include "local.h" |
| |
| int |
| _DEFUN(fileno, (f), |
| FILE * f) |
| { |
| int result; |
| CHECK_INIT (_REENT, f); |
| _flockfile (f); |
| result = __sfileno (f); |
| _funlockfile (f); |
| return result; |
| } |