1/*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Chris Torek. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)local.h 8.3 (Berkeley) 7/3/94 33 * $FreeBSD: src/lib/libc/stdio/local.h,v 1.33 2008/05/05 16:03:52 jhb Exp $ 34 */ 35 36#include <sys/cdefs.h> 37#include "xlocale_private.h" 38#include "xprintf_private.h" 39#include <sys/types.h> /* for off_t */ 40#include <pthread.h> 41#include <limits.h> 42#include <string.h> 43#include <wchar.h> 44 45/* 46 * Information local to this implementation of stdio, 47 * in particular, macros and private variables. 48 */ 49 50extern int _sread(FILE *, char *, int); 51extern int _swrite(FILE *, char const *, int); 52extern fpos_t _sseek(FILE *, fpos_t, int); 53extern int _ftello(FILE *, fpos_t *); 54extern int _fseeko(FILE *, off_t, int, int); 55extern int _vasprintf(printf_comp_t __restrict, printf_domain_t __restrict, 56 char ** __restrict, locale_t __restrict, 57 const char * __restrict, __va_list); 58extern int _vdprintf(printf_comp_t __restrict, printf_domain_t __restrict, 59 int, locale_t __restrict, const char * __restrict, va_list); 60extern int _vsnprintf(printf_comp_t __restrict, printf_domain_t __restrict, 61 char * __restrict, size_t n, locale_t __restrict, 62 const char * __restrict, __va_list); 63 64extern int __fflush(FILE *fp); 65extern void __fcloseall(void); 66extern wint_t __fgetwc(FILE *, locale_t); 67extern wint_t __fputwc(wchar_t, FILE *, locale_t); 68extern int __sflush(FILE *); 69extern FILE *__sfp(int); 70extern void __sfprelease(FILE *); /* mark free and update count as needed */ 71extern int __slbexpand(FILE *, size_t); 72extern int __srefill(FILE *); 73extern int __srefill0(FILE *); 74extern int __srefill1(FILE *); 75extern int __sread(void *, char *, int); 76extern int __swrite(void *, char const *, int); 77extern fpos_t __sseek(void *, fpos_t, int); 78extern int __sclose(void *); 79extern void __sinit(void); 80extern void _cleanup(void); 81extern void (*__cleanup)(void); 82extern void __smakebuf(FILE *); 83extern int __swhatbuf(FILE *, size_t *, int *); 84extern int _fwalk(int (*)(FILE *)); 85extern int __svfscanf_l(FILE *, locale_t, const char *, __va_list); 86extern int __swsetup(FILE *); 87extern int __sflags(const char *, int *); 88extern int __ungetc(int, FILE *); 89extern wint_t __ungetwc(wint_t, FILE *, locale_t); 90extern int __vfprintf(FILE *, locale_t, const char *, __va_list); 91extern int __vfscanf(FILE *, const char *, __va_list); 92extern int __vfwprintf(FILE *, locale_t, const wchar_t *, __va_list); 93extern int __vfwscanf(FILE * __restrict, locale_t, const wchar_t * __restrict, 94 __va_list); 95extern size_t __fread(void * __restrict buf, size_t size, size_t count, 96 FILE * __restrict fp); 97extern pthread_once_t __sdidinit; 98 99 100/* hold a buncha junk that would grow the ABI */ 101struct __sFILEX { 102 unsigned char *up; /* saved _p when _p is doing ungetc data */ 103 pthread_mutex_t fl_mutex; /* used for MT-safety */ 104 int orientation:2; /* orientation for fwide() */ 105 int counted:1; /* stream counted against STREAM_MAX */ 106 mbstate_t mbstate; /* multibyte conversion state */ 107}; 108 109#define _up _extra->up 110#define _fl_mutex _extra->fl_mutex 111#define _orientation _extra->orientation 112#define _mbstate _extra->mbstate 113#define _counted _extra->counted 114 115 116 117#define INITEXTRA(fp) do { \ 118 (fp)->_extra->up = NULL; \ 119 (fp)->_extra->fl_mutex = (pthread_mutex_t)PTHREAD_RECURSIVE_MUTEX_INITIALIZER; \ 120 (fp)->_extra->orientation = 0; \ 121 memset(&(fp)->_extra->mbstate, 0, sizeof(mbstate_t)); \ 122 (fp)->_extra->counted = 0; \ 123} while(0); 124 125/* 126 * Prepare the given FILE for writing, and return 0 iff it 127 * can be written now. Otherwise, return EOF and set errno. 128 */ 129#define prepwrite(fp) \ 130 ((((fp)->_flags & __SWR) == 0 || \ 131 ((fp)->_bf._base == NULL && ((fp)->_flags & __SSTR) == 0)) && \ 132 __swsetup(fp)) 133 134/* 135 * Test whether the given stdio file has an active ungetc buffer; 136 * release such a buffer, without restoring ordinary unread data. 137 */ 138#define HASUB(fp) ((fp)->_ub._base != NULL) 139#define FREEUB(fp) { \ 140 if ((fp)->_ub._base != (fp)->_ubuf) \ 141 free((char *)(fp)->_ub._base); \ 142 (fp)->_ub._base = NULL; \ 143} 144 145/* 146 * test for an fgetln() buffer. 147 */ 148#define HASLB(fp) ((fp)->_lb._base != NULL) 149#define FREELB(fp) { \ 150 free((char *)(fp)->_lb._base); \ 151 (fp)->_lb._base = NULL; \ 152} 153 154/* 155 * Set the orientation for a stream. If o > 0, the stream has wide- 156 * orientation. If o < 0, the stream has byte-orientation. 157 */ 158#define ORIENT(fp, o) do { \ 159 if ((fp)->_orientation == 0) \ 160 (fp)->_orientation = (o); \ 161} while (0) 162