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68 lines
1.7 KiB
C++
68 lines
1.7 KiB
C++
/*******************************************************************************
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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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filesystem.h
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Filesystem.
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*******************************************************************************/
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#ifndef FILESYSTEM_H
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#define FILESYSTEM_H
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class BlockGroup;
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class Device;
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class Inode;
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const size_t INODE_HASH_LENGTH = 1 << 16;
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class Filesystem
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{
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public:
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Filesystem(Device* device);
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~Filesystem();
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public:
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struct ext_superblock* sb;
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Block* sb_block;
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Device* device;
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BlockGroup** block_groups;
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uint32_t block_size;
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uint32_t inode_size;
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uint32_t num_blocks;
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uint32_t num_groups;
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uint32_t num_inodes;
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Inode* mru_inode;
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Inode* lru_inode;
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Inode* dirty_inode;
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Inode* hash_inodes[INODE_HASH_LENGTH];
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time_t mtime_realtime;
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time_t mtime_monotonic;
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bool dirty;
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public:
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BlockGroup* GetBlockGroup(uint32_t group_id);
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Inode* GetInode(uint32_t inode_id);
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uint32_t AllocateBlock(BlockGroup* preferred = NULL);
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uint32_t AllocateInode(BlockGroup* preferred = NULL);
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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 Dirty();
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void Sync();
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};
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#endif
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