| 1 | /*
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| 2 | * Copyright (c) 2011 Martin Sucha
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 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 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup libext2
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| 30 | * @{
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| 31 | */
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| 32 | /**
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| 33 | * @file
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| 34 | */
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| 35 |
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| 36 | #include "libext2.h"
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| 37 | #include "libext2_block_group.h"
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| 38 | #include <byteorder.h>
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| 39 |
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| 40 | /**
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| 41 | * Get block ID corresponding to the block bitmap of this block group
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| 42 | *
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| 43 | * @param bg pointer to block group descriptor
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| 44 | */
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| 45 | inline uint32_t ext2_block_group_get_block_bitmap_block(ext2_block_group_t *bg)
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| 46 | {
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| 47 | return uint32_t_le2host(bg->block_bitmap_block);
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| 48 | }
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| 49 |
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| 50 | /**
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| 51 | * Get block ID corresponding to the inode bitmap of this block group
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| 52 | *
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| 53 | * @param bg pointer to block group descriptor
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| 54 | */
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| 55 | inline uint32_t ext2_block_group_get_inode_bitmap_block(ext2_block_group_t *bg)
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| 56 | {
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| 57 | return uint32_t_le2host(bg->inode_bitmap_block);
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| 58 | }
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| 59 |
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| 60 | /**
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| 61 | * Get block ID of first block in inode table
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| 62 | *
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| 63 | * @param bg pointer to block group descriptor
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| 64 | */
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| 65 | inline uint32_t ext2_block_group_get_inode_table_first_block(ext2_block_group_t *bg)
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| 66 | {
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| 67 | return uint32_t_le2host(bg->inode_table_first_block);
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| 68 | }
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| 69 |
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| 70 | /**
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| 71 | * Get amount of free blocks in this block group
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| 72 | *
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| 73 | * @param bg pointer to block group descriptor
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| 74 | */
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| 75 | inline uint16_t ext2_block_group_get_free_block_count(ext2_block_group_t *bg)
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| 76 | {
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| 77 | return uint16_t_le2host(bg->free_block_count);
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| 78 | }
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| 79 |
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| 80 | /**
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| 81 | * Get amount of free inodes in this block group
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| 82 | *
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| 83 | * @param bg pointer to block group descriptor
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| 84 | */
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| 85 | inline uint16_t ext2_block_group_get_free_inode_count(ext2_block_group_t *bg)
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| 86 | {
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| 87 | return uint16_t_le2host(bg->free_inode_count);
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| 88 | }
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| 89 |
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| 90 | /**
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| 91 | * Get amount of inodes allocated for directories
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| 92 | *
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| 93 | * @param bg pointer to block group descriptor
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| 94 | */
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| 95 | inline uint16_t ext2_block_group_get_directory_inode_count(ext2_block_group_t *bg)
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| 96 | {
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| 97 | return uint16_t_le2host(bg->directory_inode_count);
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| 98 | }
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| 99 |
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| 100 |
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| 101 | /** @}
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| 102 | */
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