local.h revision 178287
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: head/lib/libc/stdio/local.h 178287 2008-04-17 22:17:54Z jhb $ 34 */ 35 36#include <sys/types.h> /* for off_t */ 37#include <pthread.h> 38#include <string.h> 39#include <wchar.h> 40 41/* 42 * Information local to this implementation of stdio, 43 * in particular, macros and private variables. 44 */ 45 46extern int _sread(FILE *, char *, int); 47extern int _swrite(FILE *, char const *, int); 48extern fpos_t _sseek(FILE *, fpos_t, int); 49extern int _ftello(FILE *, fpos_t *); 50extern int _fseeko(FILE *, off_t, int, int); 51extern int __fflush(FILE *fp); 52extern void __fcloseall(void); 53extern wint_t __fgetwc(FILE *); 54extern wint_t __fputwc(wchar_t, FILE *); 55extern int __sflush(FILE *); 56extern FILE *__sfp(void); 57extern int __slbexpand(FILE *, size_t); 58extern int __srefill(FILE *); 59extern int __sread(void *, char *, int); 60extern int __swrite(void *, char const *, int); 61extern fpos_t __sseek(void *, fpos_t, int); 62extern int __sclose(void *); 63extern void __sinit(void); 64extern void _cleanup(void); 65extern void __smakebuf(FILE *); 66extern int __swhatbuf(FILE *, size_t *, int *); 67extern int _fwalk(int (*)(FILE *)); 68extern int __svfscanf(FILE *, const char *, __va_list); 69extern int __swsetup(FILE *); 70extern int __sflags(const char *, int *); 71extern int __ungetc(int, FILE *); 72extern wint_t __ungetwc(wint_t, FILE *); 73extern int __vfprintf(FILE *, const char *, __va_list); 74extern int __vfscanf(FILE *, const char *, __va_list); 75extern int __vfwprintf(FILE *, const wchar_t *, __va_list); 76extern int __vfwscanf(FILE * __restrict, const wchar_t * __restrict, 77 __va_list); 78extern size_t __fread(void * __restrict buf, size_t size, size_t count, 79 FILE * __restrict fp); 80extern int __sdidinit; 81 82 83/* 84 * Prepare the given FILE for writing, and return 0 iff it 85 * can be written now. Otherwise, return EOF and set errno. 86 */ 87#define prepwrite(fp) \ 88 ((((fp)->_flags & __SWR) == 0 || \ 89 ((fp)->_bf._base == NULL && ((fp)->_flags & __SSTR) == 0)) && \ 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) ((fp)->_ub._base != NULL) 97#define FREEUB(fp) { \ 98 if ((fp)->_ub._base != (fp)->_ubuf) \ 99 free((char *)(fp)->_ub._base); \ 100 (fp)->_ub._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/* 113 * Set the orientation for a stream. If o > 0, the stream has wide- 114 * orientation. If o < 0, the stream has byte-orientation. 115 */ 116#define ORIENT(fp, o) do { \ 117 if ((fp)->_orientation == 0) \ 118 (fp)->_orientation = (o); \ 119} while (0) 120