1*2fe8fb19SBen Gras /* $NetBSD: fileext.h,v 1.6 2010/01/11 20:39:29 joerg Exp $ */ 2*2fe8fb19SBen Gras 3*2fe8fb19SBen Gras /*- 4*2fe8fb19SBen Gras * Copyright (c)2001 Citrus Project, 5*2fe8fb19SBen Gras * All rights reserved. 6*2fe8fb19SBen Gras * 7*2fe8fb19SBen Gras * Redistribution and use in source and binary forms, with or without 8*2fe8fb19SBen Gras * modification, are permitted provided that the following conditions 9*2fe8fb19SBen Gras * are met: 10*2fe8fb19SBen Gras * 1. Redistributions of source code must retain the above copyright 11*2fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer. 12*2fe8fb19SBen Gras * 2. Redistributions in binary form must reproduce the above copyright 13*2fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer in the 14*2fe8fb19SBen Gras * documentation and/or other materials provided with the distribution. 15*2fe8fb19SBen Gras * 16*2fe8fb19SBen Gras * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17*2fe8fb19SBen Gras * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18*2fe8fb19SBen Gras * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19*2fe8fb19SBen Gras * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20*2fe8fb19SBen Gras * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21*2fe8fb19SBen Gras * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22*2fe8fb19SBen Gras * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23*2fe8fb19SBen Gras * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24*2fe8fb19SBen Gras * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25*2fe8fb19SBen Gras * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26*2fe8fb19SBen Gras * SUCH DAMAGE. 27*2fe8fb19SBen Gras * 28*2fe8fb19SBen Gras * $Citrus$ 29*2fe8fb19SBen Gras */ 30*2fe8fb19SBen Gras 31*2fe8fb19SBen Gras /* 32*2fe8fb19SBen Gras * file extension 33*2fe8fb19SBen Gras */ 34*2fe8fb19SBen Gras struct __sfileext { 35*2fe8fb19SBen Gras struct __sbuf _ub; /* ungetc buffer */ 36*2fe8fb19SBen Gras struct wchar_io_data _wcio; /* wide char i/o status */ 37*2fe8fb19SBen Gras size_t _fgetstr_len; 38*2fe8fb19SBen Gras char *_fgetstr_buf; 39*2fe8fb19SBen Gras #ifdef _REENTRANT 40*2fe8fb19SBen Gras mutex_t _lock; /* Lock for FLOCKFILE/FUNLOCKFILE */ 41*2fe8fb19SBen Gras cond_t _lockcond; /* Condition variable for signalling lock releases */ 42*2fe8fb19SBen Gras thr_t _lockowner; /* The thread currently holding the lock */ 43*2fe8fb19SBen Gras int _lockcount; /* Count of recursive locks */ 44*2fe8fb19SBen Gras int _lockinternal; /* Flag of whether the lock is held inside stdio */ 45*2fe8fb19SBen Gras int _lockcancelstate; /* Stashed cancellation state on internal lock */ 46*2fe8fb19SBen Gras #endif 47*2fe8fb19SBen Gras }; 48*2fe8fb19SBen Gras 49*2fe8fb19SBen Gras #define _EXT(fp) ((struct __sfileext *)(void *)((fp)->_ext._base)) 50*2fe8fb19SBen Gras #define _UB(fp) _EXT(fp)->_ub 51*2fe8fb19SBen Gras #ifdef _REENTRANT 52*2fe8fb19SBen Gras #define _LOCK(fp) (_EXT(fp)->_lock) 53*2fe8fb19SBen Gras #define _LOCKCOND(fp) (_EXT(fp)->_lockcond) 54*2fe8fb19SBen Gras #define _LOCKOWNER(fp) (_EXT(fp)->_lockowner) 55*2fe8fb19SBen Gras #define _LOCKCOUNT(fp) (_EXT(fp)->_lockcount) 56*2fe8fb19SBen Gras #define _LOCKINTERNAL(fp) (_EXT(fp)->_lockinternal) 57*2fe8fb19SBen Gras #define _LOCKCANCELSTATE(fp) (_EXT(fp)->_lockcancelstate) 58*2fe8fb19SBen Gras #define _FILEEXT_SETUP(f, fext) do { \ 59*2fe8fb19SBen Gras /* LINTED */(f)->_ext._base = (unsigned char *)(fext); \ 60*2fe8fb19SBen Gras (fext)->_fgetstr_len = 0; \ 61*2fe8fb19SBen Gras (fext)->_fgetstr_buf = NULL; \ 62*2fe8fb19SBen Gras mutex_init(&_LOCK(f), NULL); \ 63*2fe8fb19SBen Gras cond_init(&_LOCKCOND(f), 0, NULL); \ 64*2fe8fb19SBen Gras _LOCKOWNER(f) = NULL; \ 65*2fe8fb19SBen Gras _LOCKCOUNT(f) = 0; \ 66*2fe8fb19SBen Gras _LOCKINTERNAL(f) = 0; \ 67*2fe8fb19SBen Gras } while (/* CONSTCOND */ 0) 68*2fe8fb19SBen Gras #else 69*2fe8fb19SBen Gras #define _FILEEXT_SETUP(f, fext) do { \ 70*2fe8fb19SBen Gras /* LINTED */(f)->_ext._base = (unsigned char *)(fext); \ 71*2fe8fb19SBen Gras (fext)->_fgetstr_len = 0; \ 72*2fe8fb19SBen Gras (fext)->_fgetstr_buf = NULL; \ 73*2fe8fb19SBen Gras } while (/* CONSTCOND */ 0) 74*2fe8fb19SBen Gras #endif 75