/*- * 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 /* for off_t */ #include /* * Information local to this implementation of stdio, * in particular, macros and private variables. */ extern int _sread __P((FILE *, char *, int)); extern int _swrite __P((FILE *, char const *, int)); extern fpos_t _sseek __P((FILE *, fpos_t, int)); extern int _ftello __P((FILE *, fpos_t *)); extern int _fseeko __P((FILE *, off_t, int, int)); extern int __fflush __P((FILE *fp)); extern int __sflush __P((FILE *)); extern FILE *__sfp __P((void)); extern int __srefill __P((FILE *)); extern int __sread __P((void *, char *, int)); extern int __swrite __P((void *, char const *, int)); extern fpos_t __sseek __P((void *, fpos_t, int)); extern int __sclose __P((void *)); extern void __sinit __P((void)); extern void _cleanup __P((void)); extern void (*__cleanup) __P((void)); extern void __smakebuf __P((FILE *)); extern int __swhatbuf __P((FILE *, size_t *, int *)); extern int _fwalk __P((int (*)(FILE *))); extern int __swsetup __P((FILE *)); extern int __sflags __P((const char *, int *)); extern int __ungetc __P((int, FILE *)); extern int __vfprintf __P((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 */ }; /* * 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; \ }