129 lines
4.4 KiB
C
129 lines
4.4 KiB
C
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/* $NetBSD: local.h,v 1.29 2010/10/24 17:44:32 tron Exp $ */
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/*-
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Chris Torek.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)local.h 8.3 (Berkeley) 7/3/94
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*/
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#include "wcio.h"
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#include "fileext.h"
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#include <limits.h>
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#include <stdbool.h>
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/*
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* Information local to this implementation of stdio,
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* in particular, macros and private variables.
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*/
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extern int __sflush __P((FILE *));
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extern FILE *__sfp __P((void));
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extern void __sfpinit __P((FILE *));
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extern int __srefill __P((FILE *));
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extern int __sread __P((void *, char *, int));
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extern int __swrite __P((void *, char const *, int));
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extern fpos_t __sseek __P((void *, fpos_t, int));
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extern int __sclose __P((void *));
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extern void __sinit __P((void));
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extern void _cleanup __P((void));
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extern void (*__cleanup) __P((void));
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extern void __smakebuf __P((FILE *));
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extern int __swhatbuf __P((FILE *, size_t *, int *));
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extern int _fwalk __P((int (*)(FILE *)));
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extern char *_mktemp __P((char *));
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extern int __swsetup __P((FILE *));
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extern int __sflags __P((const char *, int *));
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extern int __svfscanf __P((FILE * __restrict, const char * __restrict,
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_BSD_VA_LIST_))
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__attribute__((__format__(__scanf__, 2, 0)));
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extern int __svfscanf_unlocked __P((FILE * __restrict, const char * __restrict,
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_BSD_VA_LIST_))
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__attribute__((__format__(__scanf__, 2, 0)));
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extern int __vfprintf_unlocked __P((FILE * __restrict, const char * __restrict,
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_BSD_VA_LIST_));
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extern int __sdidinit;
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extern int __gettemp __P((char *, int *, int));
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extern wint_t __fgetwc_unlock __P((FILE *));
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extern wint_t __fputwc_unlock __P((wchar_t, FILE *));
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extern ssize_t __getdelim(char **__restrict, size_t *__restrict, int,
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FILE *__restrict);
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extern char *__fgetstr __P((FILE * __restrict, size_t * __restrict, int));
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extern int __vfwprintf_unlocked __P((FILE *, const wchar_t *,
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_BSD_VA_LIST_));
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extern int __vfwscanf_unlocked __P((FILE * __restrict,
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const wchar_t * __restrict, _BSD_VA_LIST_));
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/*
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* Return true iff the given FILE cannot be written now.
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*/
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#define cantwrite(fp) \
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((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
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__swsetup(fp))
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/*
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* Test whether the given stdio file has an active ungetc buffer;
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* release such a buffer, without restoring ordinary unread data.
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*/
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#define HASUB(fp) (_UB(fp)._base != NULL)
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#define FREEUB(fp) { \
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if (_UB(fp)._base != (fp)->_ubuf) \
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free((char *)_UB(fp)._base); \
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_UB(fp)._base = NULL; \
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}
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/*
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* test for an fgetln() buffer.
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*/
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#define FREELB(fp) { \
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free(_EXT(fp)->_fgetstr_buf); \
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_EXT(fp)->_fgetstr_buf = NULL; \
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_EXT(fp)->_fgetstr_len = 0; \
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}
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extern void __flockfile_internal __P((FILE *, int));
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extern void __funlockfile_internal __P((FILE *, int));
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/*
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* Detect if the current file position fits in a long int.
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*/
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static __inline bool
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__fpos_overflow(fpos_t pos)
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{
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return (pos < LONG_MIN) || (pos > LONG_MAX);
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}
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