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Kernel: Remove block group descriptor cache from ext2fs

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This will make improving the fs easier since we need to only update
the values on the disk
This commit is contained in:
Bananymous
2023-03-23 18:52:58 +02:00
parent 7ca6cd61be
commit 633414bd20
2 changed files with 60 additions and 68 deletions
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8
kernel/include/kernel/FS/Ext2.h
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@@ -81,8 +81,6 @@ namespace Kernel
uint16_t free_blocks_count;
uint16_t free_inodes_count;
uint16_t used_dirs_count;
uint16_t __padding;
//uint8_t reserved[12];
};
struct Inode
@@ -177,22 +175,24 @@ namespace Kernel
{}
BAN::ErrorOr<void> initialize_superblock();
BAN::ErrorOr<void> initialize_block_group_descriptors();
BAN::ErrorOr<void> initialize_root_inode();
BAN::ErrorOr<Ext2::Inode> read_inode(uint32_t);
BAN::ErrorOr<BAN::Vector<uint8_t>> read_block(uint32_t);
BAN::ErrorOr<void> write_block(uint32_t, BAN::Span<const uint8_t>);
BAN::ErrorOr<Ext2::BlockGroupDescriptor> read_block_group_descriptor(uint32_t);
const Ext2::Superblock& superblock() const { return m_superblock; }
uint32_t block_size() const { return 1024 << superblock().log_block_size; }
private:
StorageDevice::Partition& m_partition;
BAN::RefPtr<Inode> m_root_inode;
Ext2::Superblock m_superblock;
BAN::Vector<Ext2::BlockGroupDescriptor> m_block_group_descriptors;
friend class Ext2Inode;
};