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| 2404 | konopa | 1 | /* |
| 2 | * Copyright (c) 1987,1997, Prentice Hall |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use of the MINIX operating system in source and |
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| 6 | * binary forms, with or without modification, are permitted provided |
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| 7 | * that the following conditions are met: |
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| 8 | |||
| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | |||
| 12 | * - Redistributions in binary form must reproduce the above |
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| 13 | * copyright notice, this list of conditions and the following |
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| 14 | * disclaimer in the documentation and/or other materials provided |
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| 15 | * with the distribution. |
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| 16 | |||
| 17 | * - Neither the name of Prentice Hall nor the names of the software |
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| 18 | * authors or contributors may be used to endorse or promote |
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| 19 | * products derived from this software without specific prior |
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| 20 | * written permission. |
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| 21 | |||
| 22 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS, AUTHORS, AND |
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| 23 | * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, |
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| 24 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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| 25 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 26 | * IN NO EVENT SHALL PRENTICE HALL OR ANY AUTHORS OR CONTRIBUTORS BE |
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| 27 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
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| 30 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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| 31 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
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| 32 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
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| 33 | * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 34 | */ |
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| 2435 | jelen | 35 | |
| 36 | /** @addtogroup FileSystemImpl |
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| 37 | * @{ |
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| 38 | */ |
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| 2404 | konopa | 39 | |
| 2435 | jelen | 40 | /** |
| 41 | * @file file.h |
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| 42 | * @brief Filp table definition |
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| 43 | */ |
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| 2367 | konopa | 44 | #ifndef _FILE_H |
| 45 | #define _FILE_H |
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| 46 | |||
| 2435 | jelen | 47 | /** |
| 48 | * This is the filp table. It is an intermediary between file descriptors and |
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| 49 | * inodes. A slot is free if filp_count == 0. |
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| 50 | */ |
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| 2367 | konopa | 51 | typedef struct { |
| 2435 | jelen | 52 | mode_t filp_mode; /**< RW bits, telling how file is opened */ |
| 53 | int filp_flags; /**< flags from open and fcntl */ |
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| 54 | int filp_count; /**< how many file descriptors share this slot?*/ |
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| 55 | inode_t *filp_ino; /**< pointer to the inode */ |
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| 56 | offset_t filp_pos; /**< file position */ |
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| 2367 | konopa | 57 | } filp_t; |
| 58 | |||
| 59 | extern filp_t filp[NR_FILPS]; |
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| 60 | |||
| 2435 | jelen | 61 | #define FILP_CLOSED 0 /**< filp_mode: associated device closed */ |
| 62 | #define NIL_FILP (filp_t *) 0 /**< indicates absence of a filp slot */ |
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| 2367 | konopa | 63 | |
| 64 | #endif /* _FILE_H */ |
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| 65 | |||
| 2435 | jelen | 66 | /** |
| 67 | * } |
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| 68 | */ |
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| 69 |