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Add CoreInode::reverse_lookup().

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Getting the absolute path of an ext2fs inode now uses the lookup cache
which makes it a lot faster.
This commit is contained in:
Andreas Kling 2018-11-15 17:04:55 +01:00
parent 5f434bc00b
commit eced5f11e3
7 changed files with 61 additions and 74 deletions
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4
VirtualFileSystem/FileSystem.h
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@ -43,7 +43,6 @@ public:
InodeIdentifier inode;
byte fileType { 0 };
};
virtual bool enumerateDirectoryInode(InodeIdentifier, Function<bool(const DirectoryEntry&)>) const = 0;
virtual bool set_mtime(InodeIdentifier, dword timestamp) = 0;
virtual InodeIdentifier create_inode(InodeIdentifier parentInode, const String& name, Unix::mode_t, unsigned size) = 0;
@ -54,7 +53,6 @@ public:
virtual RetainPtr<CoreInode> get_inode(InodeIdentifier) const = 0;
ByteBuffer readEntireInode(InodeIdentifier, FileDescriptor* = nullptr) const;
String name_of_child_in_directory(InodeIdentifier parent, InodeIdentifier child) const;
protected:
FileSystem();
@ -85,7 +83,7 @@ public:
virtual Unix::ssize_t read_bytes(Unix::off_t, Unix::size_t, byte* buffer, FileDescriptor*) = 0;
virtual bool traverse_as_directory(Function<bool(const FileSystem::DirectoryEntry&)>) = 0;
virtual InodeIdentifier lookup(const String& name) = 0;
virtual String reverse_lookup(InodeIdentifier) = 0;
protected:
CoreInode(FileSystem& fs, unsigned index)