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Add a VFS::absolutePath(InodeIdentifier).

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This is pretty inefficient for ext2fs. We walk the entire block group
containing the inode, searching through every directory for an entry
referencing this inode.

It might be a good idea to cache this information somehow. I'm not sure
how often we'll be searching for it.

Obviously there are multiple caching layers missing in the file system.
This commit is contained in:
Andreas Kling 2018-10-28 12:20:25 +01:00
parent 3f050c1972
commit 1d4af51250
11 changed files with 116 additions and 18 deletions
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1
VirtualFileSystem/Ext2FileSystem.h
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@ -46,6 +46,7 @@ private:
virtual InodeIdentifier createInode(InodeIdentifier parentInode, const String& name, Unix::mode_t, unsigned size) override;
virtual Unix::ssize_t readInodeBytes(InodeIdentifier, Unix::off_t offset, Unix::size_t count, byte* buffer, FileHandle*) const override;
virtual InodeIdentifier makeDirectory(InodeIdentifier parentInode, const String& name, Unix::mode_t) override;
virtual InodeIdentifier findParentOfInode(InodeIdentifier) const override;
bool isDirectoryInode(unsigned) const;
unsigned allocateInode(unsigned preferredGroup, unsigned expectedSize);