local.h revision aa50585d961fb2b0f6943399d90ca0ec734946a3
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 53/* 54 * The NDK apparently includes an android_support.a library that 55 * refers to __srefill in its copy of the vsnprintf implementation. 56 */ 57__LIBC_HIDDEN__ int __srefill(FILE*); 58#else 59__LIBC_ABI_PUBLIC__ int __srget(FILE*); 60__LIBC_ABI_PUBLIC__ int __swbuf(int, FILE*); 61__LIBC_ABI_PUBLIC__ int __srefill(FILE*); 62#endif 63 64#pragma GCC visibility push(hidden) 65 66int __sflush(FILE *); 67int __sflush_locked(FILE *); 68FILE *__sfp(void); 69int __sread(void *, char *, int); 70int __swrite(void *, const char *, int); 71fpos_t __sseek(void *, fpos_t, int); 72int __sclose(void *); 73void __sinit(void); 74void _cleanup(void); 75void __smakebuf(FILE *); 76int __swhatbuf(FILE *, size_t *, int *); 77int _fwalk(int (*)(FILE *)); 78int __swsetup(FILE *); 79int __sflags(const char *, int *); 80wint_t __fgetwc_unlock(FILE *); 81wint_t __ungetwc(wint_t, FILE *); 82int __vfprintf(FILE *, const char *, __va_list); 83int __svfscanf(FILE * __restrict, const char * __restrict, __va_list); 84int __vfwprintf(FILE * __restrict, const wchar_t * __restrict, __va_list); 85int __vfwscanf(FILE * __restrict, const wchar_t * __restrict, __va_list); 86 87extern void __atexit_register_cleanup(void (*)(void)); 88extern int __sdidinit; 89 90/* 91 * Return true if the given FILE cannot be written now. 92 */ 93#define cantwrite(fp) \ 94 ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \ 95 __swsetup(fp)) 96 97/* 98 * Test whether the given stdio file has an active ungetc buffer; 99 * release such a buffer, without restoring ordinary unread data. 100 */ 101#define HASUB(fp) (_UB(fp)._base != NULL) 102#define FREEUB(fp) { \ 103 if (_UB(fp)._base != (fp)->_ubuf) \ 104 free(_UB(fp)._base); \ 105 _UB(fp)._base = NULL; \ 106} 107 108/* 109 * test for an fgetln() buffer. 110 */ 111#define HASLB(fp) ((fp)->_lb._base != NULL) 112#define FREELB(fp) { \ 113 free((char *)(fp)->_lb._base); \ 114 (fp)->_lb._base = NULL; \ 115} 116 117#define FLOCKFILE(fp) flockfile(fp) 118#define FUNLOCKFILE(fp) funlockfile(fp) 119 120#define FLOATING_POINT 121#define PRINTF_WIDE_CHAR 122#define SCANF_WIDE_CHAR 123#define NO_PRINTF_PERCENT_N 124 125/* OpenBSD exposes these in <stdio.h>, but we only want them exposed to the implementation. */ 126int __srget(FILE*); 127int __swbuf(int, FILE*); 128#define __sfeof(p) (((p)->_flags & __SEOF) != 0) 129#define __sferror(p) (((p)->_flags & __SERR) != 0) 130#define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF))) 131#define __sfileno(p) ((p)->_file) 132#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++)) 133static __inline int __sputc(int _c, FILE* _p) { 134 if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n')) { 135 return (*_p->_p++ = _c); 136 } else { 137 return (__swbuf(_c, _p)); 138 } 139} 140 141/* OpenBSD declares these in fvwrite.h but we want to ensure they're hidden. */ 142struct __suio; 143extern int __sfvwrite(FILE *, struct __suio *); 144wint_t __fputwc_unlock(wchar_t wc, FILE *fp); 145 146#pragma GCC visibility pop 147