1 /* Copyright (C) 2004       Manuel Novoa III    <mjn3@codepoet.org>
2  *
3  * GNU Library General Public License (LGPL) version 2 or later.
4  *
5  * Dedicated to Toni.  See uClibc/DEDICATION.mjn3 for details.
6  */
7 
8 #include "_stdio.h"
9 
10 
11 #ifdef __DO_UNLOCKED
12 
fileno_unlocked(register FILE * stream)13 int fileno_unlocked(register FILE *stream)
14 {
15 	__STDIO_STREAM_VALIDATE(stream);
16 
17 	if ((!__STDIO_STREAM_IS_CUSTOM(stream)) && (stream->__filedes >= 0)) {
18 		return stream->__filedes;
19 	}
20 
21 	__set_errno(EBADF);
22 	return -1;
23 }
24 libc_hidden_def(fileno_unlocked)
25 
26 #ifndef __UCLIBC_HAS_THREADS__
27 strong_alias(fileno_unlocked,fileno)
28 libc_hidden_def(fileno)
29 #endif
30 
31 #elif defined __UCLIBC_HAS_THREADS__
32 
33 int fileno(register FILE *stream)
34 {
35 	int retval;
36 	__STDIO_AUTO_THREADLOCK_VAR;
37 
38 	__STDIO_AUTO_THREADLOCK(stream);
39 
40 	retval = fileno_unlocked(stream);
41 
42 	__STDIO_AUTO_THREADUNLOCK(stream);
43 
44 	return retval;
45 }
46 libc_hidden_def(fileno)
47 
48 #endif
49