| 2aa62f2b |
1 | /* $NetBSD: fileext.h,v 1.5 2003/07/18 21:46:41 nathanw Exp $ */\r |
| 2 | \r |
| 3 | /*-\r |
| 4 | * Copyright (c)2001 Citrus Project,\r |
| 5 | * All rights reserved.\r |
| 6 | *\r |
| 7 | * Redistribution and use in source and binary forms, with or without\r |
| 8 | * modification, are permitted provided that the following conditions\r |
| 9 | * are met:\r |
| 10 | * 1. Redistributions of source code must retain the above copyright\r |
| 11 | * notice, this list of conditions and the following disclaimer.\r |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright\r |
| 13 | * notice, this list of conditions and the following disclaimer in the\r |
| 14 | * documentation and/or other materials provided with the distribution.\r |
| 15 | *\r |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND\r |
| 17 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r |
| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r |
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE\r |
| 20 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r |
| 21 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r |
| 22 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r |
| 23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r |
| 24 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r |
| 25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r |
| 26 | * SUCH DAMAGE.\r |
| 27 | *\r |
| 28 | * $Citrus$\r |
| 29 | */\r |
| 30 | \r |
| 31 | /*\r |
| 32 | * file extension\r |
| 33 | */\r |
| 34 | struct __sfileext {\r |
| 35 | struct __sbuf _ub; /* ungetc buffer */\r |
| 36 | struct wchar_io_data _wcio; /* wide char i/o status */\r |
| 37 | #ifdef _REENTRANT\r |
| 38 | mutex_t _lock; /* Lock for FLOCKFILE/FUNLOCKFILE */\r |
| 39 | cond_t _lockcond; /* Condition variable for signalling lock releases */\r |
| 40 | thr_t _lockowner; /* The thread currently holding the lock */\r |
| 41 | int _lockcount; /* Count of recursive locks */\r |
| 42 | int _lockinternal; /* Flag of whether the lock is held inside stdio */\r |
| 43 | int _lockcancelstate; /* Stashed cancellation state on internal lock */\r |
| 44 | #endif \r |
| 45 | };\r |
| 46 | \r |
| 47 | #define _EXT(fp) ((struct __sfileext *)(void *)((fp)->_ext._base))\r |
| 48 | #define _UB(fp) _EXT(fp)->_ub\r |
| 49 | #ifdef _REENTRANT\r |
| 50 | #define _LOCK(fp) (_EXT(fp)->_lock)\r |
| 51 | #define _LOCKCOND(fp) (_EXT(fp)->_lockcond)\r |
| 52 | #define _LOCKOWNER(fp) (_EXT(fp)->_lockowner)\r |
| 53 | #define _LOCKCOUNT(fp) (_EXT(fp)->_lockcount)\r |
| 54 | #define _LOCKINTERNAL(fp) (_EXT(fp)->_lockinternal)\r |
| 55 | #define _LOCKCANCELSTATE(fp) (_EXT(fp)->_lockcancelstate)\r |
| 56 | #define _FILEEXT_SETUP(f, fext) do { \\r |
| 57 | /* LINTED */(f)->_ext._base = (unsigned char *)(fext); \\r |
| 58 | mutex_init(&_LOCK(f), NULL); \\r |
| 59 | cond_init(&_LOCKCOND(f), 0, NULL); \\r |
| 60 | _LOCKOWNER(f) = NULL; \\r |
| 61 | _LOCKCOUNT(f) = 0; \\r |
| 62 | _LOCKINTERNAL(f) = 0; \\r |
| 63 | } while (/* LINTED */ 0)\r |
| 64 | #else\r |
| 65 | #define _FILEEXT_SETUP(f, fext) /* LINTED */(f)->_ext._base = (unsigned char *)(fext)\r |
| 66 | #endif\r |
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