local.h revision ca276c40dfdb80ef553c6646da7f984ef7b694ce
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#if defined(__LP64__) 45/* 46 * Android <= KitKat had getc/putc macros in <stdio.h> that referred 47 * to __srget/__swbuf, so those symbols need to be public for LP32 48 * but can be hidden for LP64. 49 */ 50__LIBC_HIDDEN__ int __srget(FILE*); 51__LIBC_HIDDEN__ int __swbuf(int, FILE*); 52__LIBC_HIDDEN__ int __srefill(FILE*); 53#else 54__LIBC_ABI_PUBLIC__ int __srget(FILE*); 55__LIBC_ABI_PUBLIC__ int __swbuf(int, FILE*); 56__LIBC_ABI_PUBLIC__ int __srefill(FILE*); 57#endif 58 59#pragma GCC visibility push(hidden) 60 61int __sflush(FILE *); 62int __sflush_locked(FILE *); 63FILE *__sfp(void); 64int __sread(void *, char *, int); 65int __swrite(void *, const char *, int); 66fpos_t __sseek(void *, fpos_t, int); 67int __sclose(void *); 68void __sinit(void); 69void _cleanup(void); 70void __smakebuf(FILE *); 71int __swhatbuf(FILE *, size_t *, int *); 72int _fwalk(int (*)(FILE *)); 73int __swsetup(FILE *); 74int __sflags(const char *, int *); 75wint_t __fgetwc_unlock(FILE *); 76wint_t __ungetwc(wint_t, FILE *); 77int __vfprintf(FILE *, const char *, __va_list); 78int __svfscanf(FILE * __restrict, const char * __restrict, __va_list); 79int __vfwprintf(FILE * __restrict, const wchar_t * __restrict, __va_list); 80int __vfwscanf(FILE * __restrict, const wchar_t * __restrict, __va_list); 81 82extern void __atexit_register_cleanup(void (*)(void)); 83extern int __sdidinit; 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. */ 121int __srget(FILE*); 122int __swbuf(int, FILE*); 123#define __sfeof(p) (((p)->_flags & __SEOF) != 0) 124#define __sferror(p) (((p)->_flags & __SERR) != 0) 125#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF))) 126#define __sfileno(p) ((p)->_file) 127#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++)) 128static __inline int __sputc(int _c, FILE* _p) { 129 if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n')) { 130 return (*_p->_p++ = _c); 131 } else { 132 return (__swbuf(_c, _p)); 133 } 134} 135 136/* OpenBSD declares these in fvwrite.h but we want to ensure they're hidden. */ 137struct __suio; 138extern int __sfvwrite(FILE *, struct __suio *); 139wint_t __fputwc_unlock(wchar_t wc, FILE *fp); 140 141#pragma GCC visibility pop 142