1 1.7 rillig /* $NetBSD: fileext.h,v 1.7 2022/04/19 20:32:15 rillig Exp $ */ 2 1.1 yamt 3 1.1 yamt /*- 4 1.1 yamt * Copyright (c)2001 Citrus Project, 5 1.1 yamt * All rights reserved. 6 1.1 yamt * 7 1.1 yamt * Redistribution and use in source and binary forms, with or without 8 1.1 yamt * modification, are permitted provided that the following conditions 9 1.1 yamt * are met: 10 1.1 yamt * 1. Redistributions of source code must retain the above copyright 11 1.1 yamt * notice, this list of conditions and the following disclaimer. 12 1.1 yamt * 2. Redistributions in binary form must reproduce the above copyright 13 1.1 yamt * notice, this list of conditions and the following disclaimer in the 14 1.1 yamt * documentation and/or other materials provided with the distribution. 15 1.1 yamt * 16 1.1 yamt * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 1.1 yamt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 1.1 yamt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 1.1 yamt * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 1.1 yamt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 1.1 yamt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 1.1 yamt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 1.1 yamt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 1.1 yamt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 1.1 yamt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 1.1 yamt * SUCH DAMAGE. 27 1.1 yamt * 28 1.1 yamt * $Citrus$ 29 1.1 yamt */ 30 1.1 yamt 31 1.1 yamt /* 32 1.1 yamt * file extension 33 1.1 yamt */ 34 1.1 yamt struct __sfileext { 35 1.1 yamt struct __sbuf _ub; /* ungetc buffer */ 36 1.1 yamt struct wchar_io_data _wcio; /* wide char i/o status */ 37 1.6 joerg size_t _fgetstr_len; 38 1.6 joerg char *_fgetstr_buf; 39 1.2 thorpej #ifdef _REENTRANT 40 1.2 thorpej mutex_t _lock; /* Lock for FLOCKFILE/FUNLOCKFILE */ 41 1.4 nathanw cond_t _lockcond; /* Condition variable for signalling lock releases */ 42 1.4 nathanw thr_t _lockowner; /* The thread currently holding the lock */ 43 1.4 nathanw int _lockcount; /* Count of recursive locks */ 44 1.5 nathanw int _lockinternal; /* Flag of whether the lock is held inside stdio */ 45 1.5 nathanw int _lockcancelstate; /* Stashed cancellation state on internal lock */ 46 1.2 thorpej #endif 47 1.1 yamt }; 48 1.1 yamt 49 1.1 yamt #define _EXT(fp) ((struct __sfileext *)(void *)((fp)->_ext._base)) 50 1.1 yamt #define _UB(fp) _EXT(fp)->_ub 51 1.2 thorpej #ifdef _REENTRANT 52 1.2 thorpej #define _LOCK(fp) (_EXT(fp)->_lock) 53 1.4 nathanw #define _LOCKCOND(fp) (_EXT(fp)->_lockcond) 54 1.4 nathanw #define _LOCKOWNER(fp) (_EXT(fp)->_lockowner) 55 1.4 nathanw #define _LOCKCOUNT(fp) (_EXT(fp)->_lockcount) 56 1.5 nathanw #define _LOCKINTERNAL(fp) (_EXT(fp)->_lockinternal) 57 1.5 nathanw #define _LOCKCANCELSTATE(fp) (_EXT(fp)->_lockcancelstate) 58 1.2 thorpej #define _FILEEXT_SETUP(f, fext) do { \ 59 1.2 thorpej /* LINTED */(f)->_ext._base = (unsigned char *)(fext); \ 60 1.6 joerg (fext)->_fgetstr_len = 0; \ 61 1.6 joerg (fext)->_fgetstr_buf = NULL; \ 62 1.4 nathanw mutex_init(&_LOCK(f), NULL); \ 63 1.4 nathanw cond_init(&_LOCKCOND(f), 0, NULL); \ 64 1.4 nathanw _LOCKOWNER(f) = NULL; \ 65 1.4 nathanw _LOCKCOUNT(f) = 0; \ 66 1.5 nathanw _LOCKINTERNAL(f) = 0; \ 67 1.7 rillig } while (0) 68 1.2 thorpej #else 69 1.6 joerg #define _FILEEXT_SETUP(f, fext) do { \ 70 1.6 joerg /* LINTED */(f)->_ext._base = (unsigned char *)(fext); \ 71 1.6 joerg (fext)->_fgetstr_len = 0; \ 72 1.6 joerg (fext)->_fgetstr_buf = NULL; \ 73 1.7 rillig } while (0) 74 1.2 thorpej #endif 75
Indexes created Wed Sep 24 05:09:52 GMT 2025