1/*
2    Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
3    This program and the accompanying materials are licensed and made available
4    under the terms and conditions of the BSD License that accompanies this
5    distribution.  The full text of the license may be found at
6    http://opensource.org/licenses/bsd-license.
7
8    THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
9    WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
10
11 * Copyright (c) 1990, 1993
12 *  The Regents of the University of California.  All rights reserved.
13 *
14 * This code is derived from software contributed to Berkeley by
15 * Chris Torek.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions
19 * are met:
20 * 1. Redistributions of source code must retain the above copyright
21 *    notice, this list of conditions and the following disclaimer.
22 * 2. Redistributions in binary form must reproduce the above copyright
23 *    notice, this list of conditions and the following disclaimer in the
24 *    documentation and/or other materials provided with the distribution.
25 * 3. Neither the name of the University nor the names of its contributors
26 *    may be used to endorse or promote products derived from this software
27 *    without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * SUCH DAMAGE.
40
41    NetBSD: fileno.c,v 1.12 2004/05/09 17:27:53 kleink Exp
42    fileno.c  8.1 (Berkeley) 6/4/93
43*/
44#include  <LibConfig.h>
45#include <sys/EfiCdefs.h>
46
47#include "namespace.h"
48#include <assert.h>
49#include <errno.h>
50#include <stdio.h>
51#include "reentrant.h"
52#include "local.h"
53
54/*
55 * A subroutine version of the macro fileno.
56 */
57#undef fileno
58int _fileno __P((FILE *));  /* XXX */
59
60__weak_alias(fileno,_fileno)
61
62int
63_fileno(fp)
64  FILE *fp;
65{
66  int r;
67
68  _DIAGASSERT(fp != NULL);
69  if(fp == NULL) {
70    errno = EINVAL;
71    return (EOF);
72  }
73
74  FLOCKFILE(fp);
75  r = __sfileno(fp);
76  FUNLOCKFILE(fp);
77  return r;
78}
79