1 /* $OpenBSD: local.h,v 1.25 2016/05/23 00:21:48 guenther 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 #include <wchar.h> 41 #include "wcio.h" 42 #include "fileext.h" 43 #include "thread_private.h" 44 45 __BEGIN_HIDDEN_DECLS 46 void _cleanup(void); 47 int _fwalk(int (*)(FILE *)); 48 int __sflush(FILE *); 49 int __sflush_locked(FILE *); 50 FILE *__sfp(void); 51 int __srefill(FILE *); 52 int __sread(void *, char *, int); 53 int __swrite(void *, const char *, int); 54 fpos_t __sseek(void *, fpos_t, int); 55 int __sclose(void *); 56 void __sinit(void); 57 void __smakebuf(FILE *); 58 int __swhatbuf(FILE *, size_t *, int *); 59 int __swsetup(FILE *); 60 int __sflags(const char *, int *); 61 wint_t __fgetwc_unlock(FILE *); 62 wint_t __ungetwc(wint_t, FILE *); 63 int __vfprintf(FILE *, const char *, __va_list); 64 int __svfscanf(FILE * __restrict, const char * __restrict, __va_list); 65 int __vfwprintf(FILE * __restrict, const wchar_t * __restrict, __va_list); 66 int __vfwscanf(FILE * __restrict, const wchar_t * __restrict, __va_list); 67 68 extern int __sdidinit; 69 __END_HIDDEN_DECLS 70 71 /* 72 * Return true if the given FILE cannot be written now. 73 */ 74 #define cantwrite(fp) \ 75 ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \ 76 __swsetup(fp)) 77 78 /* 79 * Test whether the given stdio file has an active ungetc buffer; 80 * release such a buffer, without restoring ordinary unread data. 81 */ 82 #define HASUB(fp) (_UB(fp)._base != NULL) 83 #define FREEUB(fp) { \ 84 if (_UB(fp)._base != (fp)->_ubuf) \ 85 free(_UB(fp)._base); \ 86 _UB(fp)._base = NULL; \ 87 } 88 89 /* 90 * test for an fgetln() buffer. 91 */ 92 #define HASLB(fp) ((fp)->_lb._base != NULL) 93 #define FREELB(fp) { \ 94 free((char *)(fp)->_lb._base); \ 95 (fp)->_lb._base = NULL; \ 96 } 97 98 #define FLOCKFILE(fp) \ 99 do { \ 100 if (_thread_cb.tc_flockfile != NULL) \ 101 _thread_cb.tc_flockfile(fp); \ 102 } while (0) 103 #define FUNLOCKFILE(fp) \ 104 do { \ 105 if (_thread_cb.tc_funlockfile != NULL) \ 106 _thread_cb.tc_funlockfile(fp); \ 107 } while (0) 108