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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 block.h |
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| 42 | * @brief Data block. |
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| 43 | */ |
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| 2363 | konopa | 44 | |
| 45 | #ifndef _BLOCK_H |
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| 46 | #define _BLOCK_H |
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| 47 | |||
| 48 | #include "dir.h" |
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| 49 | |||
| 2435 | jelen | 50 | #define DIRECTORY_BLOCK 1 /**< directory block */ |
| 51 | #define INDIRECT_BLOCK 2 /**< pointer block */ |
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| 2363 | konopa | 52 | |
| 2435 | jelen | 53 | /** |
| 54 | * Data block |
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| 55 | */ |
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| 2363 | konopa | 56 | typedef struct { |
| 57 | union { |
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| 2435 | jelen | 58 | char b__data[BLOCK_SIZE]; /**< ordinary user data */ |
| 59 | direct_t b__dir[NR_DIR_ENTRIES]; /**< directory block */ |
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| 60 | directex_t b__direx[NR_DIR_ENTRIES_EX]; /**< extended directory block */ |
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| 61 | zone1_t b__v1_ind[V1_INDIRECTS]; /**< V1 indirect block */ |
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| 62 | zone_t b__v2_ind[V2_INDIRECTS]; /**< V2 indirect block */ |
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| 63 | d1_inode_t b__v1_ino[V1_INODES_PER_BLOCK]; /**< V1 inode block */ |
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| 64 | d2_inode_t b__v2_ino[V2_INODES_PER_BLOCK]; /**< V2 inode block */ |
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| 2363 | konopa | 65 | } b; |
| 66 | |||
| 2435 | jelen | 67 | block_num_t b_blocknr; /**< number of block */ |
| 68 | char b_count; /**< number of users of this block */ |
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| 2363 | konopa | 69 | } block_t; |
| 70 | |||
| 71 | extern block_t* work_block; |
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| 72 | |||
| 73 | #endif /* _BLOCK_H */ |
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| 2435 | jelen | 74 | |
| 75 | /** |
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| 76 | * } |
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| 77 | */ |
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| 78 |