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71 lines
1.8 KiB
C
71 lines
1.8 KiB
C
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013.
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This program is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program. If not, see <http://www.gnu.org/licenses/>.
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blockgroup.h
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Filesystem block group.
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*******************************************************************************/
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#ifndef BLOCKGROUP_H
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#define BLOCKGROUP_H
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class Block;
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class Filesystem;
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class BlockGroup
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{
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public:
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BlockGroup(Filesystem* filesystem, uint32_t group_id);
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~BlockGroup();
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public:
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Block* data_block;
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struct ext_blockgrpdesc* data;
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Filesystem* filesystem;
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Block* block_bitmap_chunk;
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Block* inode_bitmap_chunk;
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size_t reference_count;
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uint32_t group_id;
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uint32_t block_alloc_chunk;
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uint32_t inode_alloc_chunk;
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uint32_t num_block_bitmap_chunks;
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uint32_t num_inode_bitmap_chunks;
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uint32_t block_bitmap_chunk_i;
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uint32_t inode_bitmap_chunk_i;
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uint32_t num_blocks;
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uint32_t num_inodes;
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uint32_t first_block_id;
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uint32_t first_inode_id;
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bool dirty;
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public:
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uint32_t AllocateBlock();
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uint32_t AllocateInode();
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void FreeBlock(uint32_t block_id);
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void FreeInode(uint32_t inode_id);
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void Refer();
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void Unref();
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void Sync();
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void Dirty();
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void Use();
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void Unlink();
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void Prelink();
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};
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#endif
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