2b72262b4f
I hereby relicense all my work on Sortix under the ISC license as below. All Sortix contributions by other people are already under this license, are not substantial enough to be copyrightable, or have been removed. All imported code from other projects is compatible with this license. All GPL licensed code from other projects had previously been removed. Copyright 2011-2016 Jonas 'Sortie' Termansen and contributors. Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
/*
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* Copyright (c) 2013, 2014, 2015 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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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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static 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, const char* mount_path);
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~Filesystem();
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public:
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Block* sb_block;
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struct ext_superblock* sb;
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Device* device;
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BlockGroup** block_groups;
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const char* mount_path;
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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 BeginWrite();
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void FinishWrite();
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void Sync();
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};
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#endif
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