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
58 int _fileno __P((FILE *));  /* XXX */
59 
60 __weak_alias(fileno,_fileno)
61 
62 int
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