1 /* $OpenBSD: local.h,v 1.12 2005/10/10 17:37:44 espie 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 #include "wcio.h" 36 #include "fileext.h" 37 38 39 /* 40 * Information local to this implementation of stdio, 41 * in particular, macros and private variables. 42 */ 43 44 int __sflush(FILE *); 45 int __sflush_locked(FILE *); 46 FILE *__sfp(void); 47 int __srefill(FILE *); 48 int __sread(void *, char *, int); 49 int __swrite(void *, const char *, int); 50 fpos_t __sseek(void *, fpos_t, int); 51 int __sclose(void *); 52 void __sinit(void); 53 void _cleanup(void); 54 void __smakebuf(FILE *); 55 int __swhatbuf(FILE *, size_t *, int *); 56 int _fwalk(int (*)(FILE *)); 57 int __swsetup(FILE *); 58 int __sflags(const char *, int *); 59 int __vfprintf(FILE *, const char *, __va_list); 60 61 /* 62 * Function to clean up streams, called from abort() and exit(). 63 */ 64 extern void (*__cleanup)(void); 65 extern int __sdidinit; 66 67 /* 68 * Return true if the given FILE cannot be written now. 69 */ 70 #define cantwrite(fp) \ 71 ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \ 72 __swsetup(fp)) 73 74 /* 75 * Test whether the given stdio file has an active ungetc buffer; 76 * release such a buffer, without restoring ordinary unread data. 77 */ 78 #define HASUB(fp) (_UB(fp)._base != NULL) 79 #define FREEUB(fp) { \ 80 if (_UB(fp)._base != (fp)->_ubuf) \ 81 free(_UB(fp)._base); \ 82 _UB(fp)._base = NULL; \ 83 } 84 85 /* 86 * test for an fgetln() buffer. 87 */ 88 #define HASLB(fp) ((fp)->_lb._base != NULL) 89 #define FREELB(fp) { \ 90 free((char *)(fp)->_lb._base); \ 91 (fp)->_lb._base = NULL; \ 92 } 93 94 #define FLOCKFILE(fp) do { if (__isthreaded) flockfile(fp); } while (0) 95 #define FUNLOCKFILE(fp) do { if (__isthreaded) funlockfile(fp); } while (0) 96