44 lines
1.2 KiB
C++
44 lines
1.2 KiB
C++
#ifndef INODE_ALLOCATOR_HPP
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#define INODE_ALLOCATOR_HPP
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#include "fs_constants.hpp"
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#include "fs_data_types.hpp"
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class Fs;
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class INode_Allocator {
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public:
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const int INODES_PER_BLOCK = IO_BLOCK_SIZE / INODE_SIZE;
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INode_Allocator(Fs *fs, u_int64_t block_segment_start,
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u_int64_t block_segment_end);
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virtual int new_inode(u_int64_t uid, u_int64_t gid, u_int64_t permissions,
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INode_Data *inode_data) = 0;
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virtual int free_inode(INode_Data *inode_data) = 0;
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virtual int format() = 0;
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u_int64_t get_block_num(u_int64_t inode_data);
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u_int64_t get_block_offset(u_int64_t inode_data);
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protected:
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Fs *fs;
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u_int64_t block_segment_start, block_segment_end;
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u_int64_t max_num_inodes;
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};
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class INode_Allocator_Freelist : public INode_Allocator {
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public:
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INode_Allocator_Freelist(Fs *fs, u_int64_t block_segment_start,
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u_int64_t block_segment_end)
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: INode_Allocator(fs, block_segment_start, block_segment_end) {}
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int new_inode(u_int64_t uid, u_int64_t gid, u_int64_t permissions,
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INode_Data *inode_data) override;
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int free_inode(INode_Data *inode_data) override;
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int format() override;
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};
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#endif |