1/*	$OpenBSD: local.h,v 1.12 2005/10/10 17:37:44 espie 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
44/*
45 * Android <= KitKat had getc/putc macros in <stdio.h> that referred
46 * to __srget/__swbuf, so those symbols need to be public for LP32
47 * but can be hidden for LP64.
48 */
49__LIBC64_HIDDEN__ int __srget(FILE*);
50__LIBC64_HIDDEN__ int __swbuf(int, FILE*);
51__LIBC64_HIDDEN__ int __srefill(FILE*);
52
53/* This was referenced by the apportable middleware for LP32. */
54__LIBC64_HIDDEN__ int __swsetup(FILE*);
55
56/* These were referenced by a couple of different pieces of middleware and the Crystax NDK. */
57__LIBC64_HIDDEN__ extern int __sdidinit;
58__LIBC64_HIDDEN__ int __sflags(const char*, int*);
59__LIBC64_HIDDEN__ FILE* __sfp(void);
60__LIBC64_HIDDEN__ void __sinit(void);
61__LIBC64_HIDDEN__ void __smakebuf(FILE*);
62
63/* These are referenced by the Greed for Glory franchise. */
64__LIBC64_HIDDEN__ int __sflush(FILE *);
65__LIBC64_HIDDEN__ int __sread(void *, char *, int);
66__LIBC64_HIDDEN__ int __swrite(void *, const char *, int);
67__LIBC64_HIDDEN__ fpos_t __sseek(void *, fpos_t, int);
68__LIBC64_HIDDEN__ int __sclose(void *);
69__LIBC64_HIDDEN__ int _fwalk(int (*)(FILE *));
70
71#pragma GCC visibility push(hidden)
72
73int	__sflush_locked(FILE *);
74void	_cleanup(void);
75int	__swhatbuf(FILE *, size_t *, int *);
76wint_t __fgetwc_unlock(FILE *);
77wint_t	__ungetwc(wint_t, FILE *);
78int	__vfprintf(FILE *, const char *, __va_list);
79int	__svfscanf(FILE * __restrict, const char * __restrict, __va_list);
80int	__vfwprintf(FILE * __restrict, const wchar_t * __restrict, __va_list);
81int	__vfwscanf(FILE * __restrict, const wchar_t * __restrict, __va_list);
82
83extern void __atexit_register_cleanup(void (*)(void));
84
85/*
86 * Return true if the given FILE cannot be written now.
87 */
88#define	cantwrite(fp) \
89	((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
90	 __swsetup(fp))
91
92/*
93 * Test whether the given stdio file has an active ungetc buffer;
94 * release such a buffer, without restoring ordinary unread data.
95 */
96#define	HASUB(fp) (_UB(fp)._base != NULL)
97#define	FREEUB(fp) { \
98	if (_UB(fp)._base != (fp)->_ubuf) \
99		free(_UB(fp)._base); \
100	_UB(fp)._base = NULL; \
101}
102
103/*
104 * test for an fgetln() buffer.
105 */
106#define	HASLB(fp) ((fp)->_lb._base != NULL)
107#define	FREELB(fp) { \
108	free((char *)(fp)->_lb._base); \
109	(fp)->_lb._base = NULL; \
110}
111
112#define FLOCKFILE(fp)   flockfile(fp)
113#define FUNLOCKFILE(fp) funlockfile(fp)
114
115#define FLOATING_POINT
116#define PRINTF_WIDE_CHAR
117#define SCANF_WIDE_CHAR
118#define NO_PRINTF_PERCENT_N
119
120/* OpenBSD exposes these in <stdio.h>, but we only want them exposed to the implementation. */
121#define __sfeof(p)     (((p)->_flags & __SEOF) != 0)
122#define __sferror(p)   (((p)->_flags & __SERR) != 0)
123#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF)))
124#define __sfileno(p)   ((p)->_file)
125#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
126static __inline int __sputc(int _c, FILE* _p) {
127  if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n')) {
128    return (*_p->_p++ = _c);
129  } else {
130    return (__swbuf(_c, _p));
131  }
132}
133
134/* OpenBSD declares these in fvwrite.h but we want to ensure they're hidden. */
135struct __suio;
136extern int __sfvwrite(FILE *, struct __suio *);
137wint_t __fputwc_unlock(wchar_t wc, FILE *fp);
138
139#pragma GCC visibility pop
140