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/*-
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Chris Torek.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)local.h 8.3 (Berkeley) 7/3/94
* $FreeBSD$
*/
#include <sys/types.h> /* for off_t */
#include <pthread.h>
#include <string.h>
#include <wchar.h>
/*
* Information local to this implementation of stdio,
* in particular, macros and private variables.
*/
extern int _sread(FILE *, char *, int);
extern int _swrite(FILE *, char const *, int);
extern fpos_t _sseek(FILE *, fpos_t, int);
extern int _ftello(FILE *, fpos_t *);
extern int _fseeko(FILE *, off_t, int, int);
extern int __fflush(FILE *fp);
extern int __sflush(FILE *);
extern FILE *__sfp(void);
extern int __srefill(FILE *);
extern int __sread(void *, char *, int);
extern int __swrite(void *, char const *, int);
extern fpos_t __sseek(void *, fpos_t, int);
extern int __sclose(void *);
extern void __sinit(void);
extern void _cleanup(void);
extern void (*__cleanup)(void);
extern void __smakebuf(FILE *);
extern int __swhatbuf(FILE *, size_t *, int *);
extern int _fwalk(int (*)(FILE *));
extern int __swsetup(FILE *);
extern int __sflags(const char *, int *);
extern int __ungetc(int, FILE *);
extern int __vfprintf(FILE *, const char *, _BSD_VA_LIST_);
extern int __sdidinit;
/* hold a buncha junk that would grow the ABI */
struct __sFILEX {
unsigned char *_up; /* saved _p when _p is doing ungetc data */
pthread_mutex_t fl_mutex; /* used for MT-safety */
pthread_t fl_owner; /* current owner */
int fl_count; /* recursive lock count */
int orientation; /* orientation for fwide() */
#ifdef notdef
/*
* XXX These are not used yet -- they will be used to store the
* multibyte conversion state for writing and reading when
* stateful encodings are supported by the locale framework.
*/
mbstate_t wstate; /* write conversion state */
mbstate_t rstate; /* read conversion state */
#endif
};
/*
* Return true iff the given FILE cannot be written now.
*/
#define cantwrite(fp) \
((((fp)->_flags & __SWR) == 0 || \
((fp)->_bf._base == NULL && ((fp)->_flags & __SSTR) == 0)) && \
__swsetup(fp))
/*
* Test whether the given stdio file has an active ungetc buffer;
* release such a buffer, without restoring ordinary unread data.
*/
#define HASUB(fp) ((fp)->_ub._base != NULL)
#define FREEUB(fp) { \
if ((fp)->_ub._base != (fp)->_ubuf) \
free((char *)(fp)->_ub._base); \
(fp)->_ub._base = NULL; \
}
/*
* test for an fgetln() buffer.
*/
#define HASLB(fp) ((fp)->_lb._base != NULL)
#define FREELB(fp) { \
free((char *)(fp)->_lb._base); \
(fp)->_lb._base = NULL; \
}
#define INITEXTRA(fp) { \
(fp)->_extra->_up = NULL; \
(fp)->_extra->fl_mutex = PTHREAD_MUTEX_INITIALIZER; \
(fp)->_extra->fl_owner = NULL; \
(fp)->_extra->fl_count = 0; \
(fp)->_extra->orientation = 0; \
/* memset(&(fp)->_extra->wstate, 0, sizeof(mbstate_t)); */ \
/* memset(&(fp)->_extra->rstate, 0, sizeof(mbstate_t)); */ \
}
/*
* Set the orientation for a stream. If o > 0, the stream has wide-
* orientation. If o < 0, the stream has byte-orientation.
*/
#define ORIENT(fp, o) do { \
if ((fp)->_extra->orientation == 0) \
(fp)->_extra->orientation = (o); \
} while (0)
#ifdef FLOCKFILE
#define ORIENTLOCK(fp, o) do { \
FLOCKFILE(fp); \
ORIENT(fp, o); \
FUNLOCKFILE(fp); \
} while (0)
#endif
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