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#include "wcio.h"
36#include "fileext.h"
37
38#ifndef DEFFILEMODE
39#define DEFFILEMODE  (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
40#endif
41
42
43/*
44 * Information local to this implementation of stdio,
45 * in particular, macros and private variables.
46 */
47
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	_cleanup(void);
58void	__smakebuf(FILE *);
59int	__swhatbuf(FILE *, size_t *, int *);
60int	_fwalk(int (*)(FILE *));
61int	__swsetup(FILE *);
62int	__sflags(const char *, int *);
63int	__vfprintf(FILE *, const char *, __va_list);
64
65extern void __atexit_register_cleanup(void (*)(void));
66extern int __sdidinit;
67
68/*
69 * Return true if the given FILE cannot be written now.
70 */
71#define	cantwrite(fp) \
72	((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
73	 __swsetup(fp))
74
75/*
76 * Test whether the given stdio file has an active ungetc buffer;
77 * release such a buffer, without restoring ordinary unread data.
78 */
79#define	HASUB(fp) (_UB(fp)._base != NULL)
80#define	FREEUB(fp) { \
81	if (_UB(fp)._base != (fp)->_ubuf) \
82		free(_UB(fp)._base); \
83	_UB(fp)._base = NULL; \
84}
85
86/*
87 * test for an fgetln() buffer.
88 */
89#define	HASLB(fp) ((fp)->_lb._base != NULL)
90#define	FREELB(fp) { \
91	free((char *)(fp)->_lb._base); \
92	(fp)->_lb._base = NULL; \
93}
94
95#define FLOCKFILE(fp)   do { if (__isthreaded) flockfile(fp); } while (0)
96#define FUNLOCKFILE(fp) do { if (__isthreaded) funlockfile(fp); } while (0)
97