1/*	$OpenBSD: local.h,v 1.25 2016/05/23 00:21:48 guenther Exp $	*/
2
3/*-
4 * Copyright (c) 1990, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Chris Torek.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35/*
36 * Information local to this implementation of stdio,
37 * in particular, macros and private variables.
38 */
39
40#include <wchar.h>
41#include "wcio.h"
42#include "fileext.h"
43#include "thread_private.h"
44
45__BEGIN_HIDDEN_DECLS
46void	_cleanup(void);
47int	_fwalk(int (*)(FILE *));
48int	__sflush(FILE *);
49int	__sflush_locked(FILE *);
50FILE	*__sfp(void);
51int	__srefill(FILE *);
52int	__sread(void *, char *, int);
53int	__swrite(void *, const char *, int);
54fpos_t	__sseek(void *, fpos_t, int);
55int	__sclose(void *);
56void	__sinit(void);
57void	__smakebuf(FILE *);
58int	__swhatbuf(FILE *, size_t *, int *);
59int	__swsetup(FILE *);
60int	__sflags(const char *, int *);
61wint_t __fgetwc_unlock(FILE *);
62wint_t	__ungetwc(wint_t, FILE *);
63int	__vfprintf(FILE *, const char *, __va_list);
64int	__svfscanf(FILE * __restrict, const char * __restrict, __va_list);
65int	__vfwprintf(FILE * __restrict, const wchar_t * __restrict, __va_list);
66int	__vfwscanf(FILE * __restrict, const wchar_t * __restrict, __va_list);
67
68extern int __sdidinit;
69__END_HIDDEN_DECLS
70
71/*
72 * Return true if the given FILE cannot be written now.
73 */
74#define	cantwrite(fp) \
75	((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
76	 __swsetup(fp))
77
78/*
79 * Test whether the given stdio file has an active ungetc buffer;
80 * release such a buffer, without restoring ordinary unread data.
81 */
82#define	HASUB(fp) (_UB(fp)._base != NULL)
83#define	FREEUB(fp) { \
84	if (_UB(fp)._base != (fp)->_ubuf) \
85		free(_UB(fp)._base); \
86	_UB(fp)._base = NULL; \
87}
88
89/*
90 * test for an fgetln() buffer.
91 */
92#define	HASLB(fp) ((fp)->_lb._base != NULL)
93#define	FREELB(fp) { \
94	free((char *)(fp)->_lb._base); \
95	(fp)->_lb._base = NULL; \
96}
97
98#define FLOCKFILE(fp)							\
99	do {								\
100		if (_thread_cb.tc_flockfile != NULL)			\
101			_thread_cb.tc_flockfile(fp);			\
102	} while (0)
103#define FUNLOCKFILE(fp)							\
104	do {								\
105		if (_thread_cb.tc_funlockfile != NULL)			\
106			_thread_cb.tc_funlockfile(fp);			\
107	} while (0)
108