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Kernel: Virtualize the File::stat() operation

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Instead of FileDescriptor branching on the type of File it's wrapping,
add a File::stat() function that can be overridden to provide custom
behavior for the stat syscalls.
This commit is contained in:
Andreas Kling 2020-09-06 18:31:51 +02:00
parent 5444cabd39
commit 22831033d0
6 changed files with 28 additions and 20 deletions
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Kernel/FileSystem/File.h
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@ -78,6 +78,7 @@ public:
virtual KResultOr<size_t> write(FileDescription&, size_t, const u8*, size_t) = 0;
virtual int ioctl(FileDescription&, unsigned request, FlatPtr arg);
virtual KResultOr<Region*> mmap(Process&, FileDescription&, VirtualAddress preferred_vaddr, size_t offset, size_t size, int prot, bool shared);
virtual KResult stat(::stat&) const { return KResult(-EBADF); }
virtual String absolute_path(const FileDescription&) const = 0;