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 __BEGIN_DECLS 45 46 /* 47 * Android <= KitKat had getc/putc macros in <stdio.h> that referred 48 * to __srget/__swbuf, so those symbols need to be public for LP32 49 * but can be hidden for LP64. 50 */ 51 __LIBC64_HIDDEN__ int __srget(FILE*); 52 __LIBC64_HIDDEN__ int __swbuf(int, FILE*); 53 __LIBC64_HIDDEN__ int __srefill(FILE*); 54 55 /* This was referenced by the apportable middleware for LP32. */ 56 __LIBC64_HIDDEN__ int __swsetup(FILE*); 57 58 /* These were referenced by a couple of different pieces of middleware and the Crystax NDK. */ 59 __LIBC64_HIDDEN__ extern int __sdidinit; 60 __LIBC64_HIDDEN__ int __sflags(const char*, int*); 61 __LIBC64_HIDDEN__ FILE* __sfp(void); 62 __LIBC64_HIDDEN__ void __sinit(void); 63 __LIBC64_HIDDEN__ void __smakebuf(FILE*); 64 65 /* These are referenced by the Greed for Glory franchise. */ 66 __LIBC64_HIDDEN__ int __sflush(FILE *); 67 __LIBC64_HIDDEN__ int __sread(void *, char *, int); 68 __LIBC64_HIDDEN__ int __swrite(void *, const char *, int); 69 __LIBC64_HIDDEN__ fpos_t __sseek(void *, fpos_t, int); 70 __LIBC64_HIDDEN__ int __sclose(void *); 71 __LIBC64_HIDDEN__ int _fwalk(int (*)(FILE *)); 72 73 #pragma GCC visibility push(hidden) 74 75 int __sflush_locked(FILE *); 76 void _cleanup(void); 77 int __swhatbuf(FILE *, size_t *, int *); 78 wint_t __fgetwc_unlock(FILE *); 79 wint_t __ungetwc(wint_t, FILE *); 80 int __vfprintf(FILE *, const char *, __va_list); 81 int __svfscanf(FILE * __restrict, const char * __restrict, __va_list); 82 int __vfwprintf(FILE * __restrict, const wchar_t * __restrict, __va_list); 83 int __vfwscanf(FILE * __restrict, const wchar_t * __restrict, __va_list); 84 85 extern void __atexit_register_cleanup(void (*)(void)); 86 87 /* 88 * Return true if the given FILE cannot be written now. 89 */ 90 #define cantwrite(fp) \ 91 ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \ 92 __swsetup(fp)) 93 94 /* 95 * Test whether the given stdio file has an active ungetc buffer; 96 * release such a buffer, without restoring ordinary unread data. 97 */ 98 #define HASUB(fp) (_UB(fp)._base != NULL) 99 #define FREEUB(fp) { \ 100 if (_UB(fp)._base != (fp)->_ubuf) \ 101 free(_UB(fp)._base); \ 102 _UB(fp)._base = NULL; \ 103 } 104 105 /* 106 * test for an fgetln() buffer. 107 */ 108 #define HASLB(fp) ((fp)->_lb._base != NULL) 109 #define FREELB(fp) { \ 110 free((char *)(fp)->_lb._base); \ 111 (fp)->_lb._base = NULL; \ 112 } 113 114 #define FLOCKFILE(fp) if (_EXT(fp)->_stdio_handles_locking) flockfile(fp) 115 #define FUNLOCKFILE(fp) if (_EXT(fp)->_stdio_handles_locking) funlockfile(fp) 116 117 #define FLOATING_POINT 118 #define PRINTF_WIDE_CHAR 119 #define SCANF_WIDE_CHAR 120 #define NO_PRINTF_PERCENT_N 121 122 /* OpenBSD exposes these in <stdio.h>, but we only want them exposed to the implementation. */ 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 #if !defined(__cplusplus) 128 #define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++)) 129 static __inline int __sputc(int _c, FILE* _p) { 130 if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n')) { 131 return (*_p->_p++ = _c); 132 } else { 133 return (__swbuf(_c, _p)); 134 } 135 } 136 #endif 137 138 /* OpenBSD declares these in fvwrite.h but we want to ensure they're hidden. */ 139 struct __suio; 140 extern int __sfvwrite(FILE *, struct __suio *); 141 wint_t __fputwc_unlock(wchar_t wc, FILE *fp); 142 143 #pragma GCC visibility pop 144 145 __END_DECLS 146
