1 /* $NetBSD: local.h,v 1.5 1995/02/02 02:10:05 jtc Exp $ */ 2 3 /*- 4 * Copyright (c) 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Chris Torek. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)local.h 8.2 (Berkeley) 1/2/94 39 */ 40 41 /* 42 * Information local to this implementation of stdio, 43 * in particular, macros and private variables. 44 */ 45 46 int __sflush __P((FILE *)); 47 FILE *__sfp __P((void)); 48 int __srefill __P((FILE *)); 49 int __sread __P((void *, char *, int)); 50 int __swrite __P((void *, char const *, int)); 51 fpos_t __sseek __P((void *, fpos_t, int)); 52 int __sclose __P((void *)); 53 void __sinit __P((void)); 54 void _cleanup __P((void)); 55 void (*__cleanup) __P((void)); 56 void __smakebuf __P((FILE *)); 57 int __swhatbuf __P((FILE *, size_t *, int *)); 58 int _fwalk __P((int (*)(FILE *))); 59 int __swsetup __P((FILE *)); 60 int __sflags __P((const char *, int *)); 61 62 extern int __sdidinit; 63 64 /* 65 * Return true iff the given FILE cannot be written now. 66 */ 67 #define cantwrite(fp) \ 68 ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \ 69 __swsetup(fp)) 70 71 /* 72 * Test whether the given stdio file has an active ungetc buffer; 73 * release such a buffer, without restoring ordinary unread data. 74 */ 75 #define HASUB(fp) ((fp)->_ub._base != NULL) 76 #define FREEUB(fp) { \ 77 if ((fp)->_ub._base != (fp)->_ubuf) \ 78 free((char *)(fp)->_ub._base); \ 79 (fp)->_ub._base = NULL; \ 80 } 81 82 /* 83 * test for an fgetln() buffer. 84 */ 85 #define HASLB(fp) ((fp)->_lb._base != NULL) 86 #define FREELB(fp) { \ 87 free((char *)(fp)->_lb._base); \ 88 (fp)->_lb._base = NULL; \ 89 } 90