1 /* $OpenBSD: local.h,v 1.6 2003/06/02 20:18:37 millert 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Information local to this implementation of stdio, 37 * in particular, macros and private variables. 38 */ 39 40 int __sflush(FILE *); 41 FILE *__sfp(void); 42 int __srefill(FILE *); 43 int __sread(void *, char *, int); 44 int __swrite(void *, char const *, int); 45 fpos_t __sseek(void *, fpos_t, int); 46 int __sclose(void *); 47 void __sinit(void); 48 void _cleanup(void); 49 void __smakebuf(FILE *); 50 int __swhatbuf(FILE *, size_t *, int *); 51 int _fwalk(int (*)(FILE *)); 52 int __swsetup(FILE *); 53 int __sflags(const char *, int *); 54 55 extern void __atexit_register_cleanup(void (*)()); 56 extern int __sdidinit; 57 58 /* 59 * Return true iff the given FILE cannot be written now. 60 */ 61 #define cantwrite(fp) \ 62 ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \ 63 __swsetup(fp)) 64 65 /* 66 * Test whether the given stdio file has an active ungetc buffer; 67 * release such a buffer, without restoring ordinary unread data. 68 */ 69 #define HASUB(fp) ((fp)->_ub._base != NULL) 70 #define FREEUB(fp) { \ 71 if ((fp)->_ub._base != (fp)->_ubuf) \ 72 free((char *)(fp)->_ub._base); \ 73 (fp)->_ub._base = NULL; \ 74 } 75 76 /* 77 * test for an fgetln() buffer. 78 */ 79 #define HASLB(fp) ((fp)->_lb._base != NULL) 80 #define FREELB(fp) { \ 81 free((char *)(fp)->_lb._base); \ 82 (fp)->_lb._base = NULL; \ 83 } 84