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 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)local.h 8.3 (Berkeley) 7/3/94 37 * 38 * $FreeBSD: src/lib/libc/stdio/local.h,v 1.1.1.2.6.1 2001/03/05 11:27:49 obrien Exp $ 39 * $DragonFly: src/lib/libc/stdio/local.h,v 1.11 2007/11/25 01:28:22 swildner Exp $ 40 */ 41 42 #include <sys/types.h> /* for off_t */ 43 #include <string.h> 44 #include <wchar.h> /* for wchar_t */ 45 46 #ifndef _MACHINE_STDINT_H_ 47 #include <machine/stdint.h> /* __size_t */ 48 #endif 49 50 /* 51 * Information local to this implementation of stdio, 52 * in particular, macros and private variables. 53 */ 54 55 extern int __slbexpand(FILE *, size_t); 56 extern int __sflush (FILE *); 57 extern FILE *__sfp (void); 58 extern int __srefill (FILE *); 59 extern int __sread (void *, char *, int); 60 extern int __swrite (void *, char const *, int); 61 extern fpos_t __sseek (void *, fpos_t, int); 62 extern int __sclose (void *); 63 extern void __sinit (void); 64 extern void _cleanup (void); 65 extern void (*__cleanup) (void); 66 extern void __smakebuf (FILE *); 67 extern int __swhatbuf (FILE *, __size_t *, int *); 68 extern int _fwalk (int (*)(FILE *)); 69 extern int __swsetup (FILE *); 70 extern int __sflags (const char *, int *); 71 extern int __vfprintf(FILE *, const char *, __va_list); 72 extern wint_t __fgetwc_unlock(FILE *); 73 extern wint_t __fputwc_unlock(wchar_t, FILE *); 74 extern int __vfwprintf_unlocked(FILE *, const wchar_t *, __va_list); 75 extern size_t __fread(void *buf, size_t size, size_t count, FILE *fp); 76 77 extern int __sdidinit; 78 79 /* 80 * Return true iff the given FILE cannot be written now. 81 */ 82 #define cantwrite(fp) \ 83 ((((fp)->pub._flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \ 84 __swsetup(fp)) 85 86 /* 87 * Test whether the given stdio file has an active ungetc buffer; 88 * release such a buffer, without restoring ordinary unread data. 89 */ 90 #define HASUB(fp) ((fp)->_ub._base != NULL) 91 #define FREEUB(fp) { \ 92 if ((fp)->_ub._base != (fp)->_ubuf) \ 93 free((char *)(fp)->_ub._base); \ 94 (fp)->_ub._base = NULL; \ 95 } 96 97 /* 98 * test for an fgetln() buffer. 99 */ 100 #define HASLB(fp) ((fp)->_lb._base != NULL) 101 #define FREELB(fp) { \ 102 free((char *)(fp)->_lb._base); \ 103 (fp)->_lb._base = NULL; \ 104 } 105