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Kernel: Plumb KResult through FileDescription::read_entire_file() implementation.

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Allow file system implementation to return meaningful error codes to
callers of the FileDescription::read_entire_file(). This allows both
Process::sys$readlink() and Process::sys$module_load() to return more
detailed errors to the user.
This commit is contained in:
Brian Gianforcaro 2020-05-26 00:36:11 -07:00 • committed by Andreas Kling
parent c459e4ecb2
commit 6a74af8063
14 changed files with 54 additions and 36 deletions
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4
Kernel/FileSystem/Inode.h
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@ -66,10 +66,10 @@ public:
InodeIdentifier identifier() const { return { fsid(), index() }; }
virtual InodeMetadata metadata() const = 0;
ByteBuffer read_entire(FileDescription* = nullptr) const;
KResultOr<ByteBuffer> read_entire(FileDescription* = nullptr) const;
virtual ssize_t read_bytes(off_t, ssize_t, u8* buffer, FileDescription*) const = 0;
virtual bool traverse_as_directory(Function<bool(const FS::DirectoryEntry&)>) const = 0;
virtual KResult traverse_as_directory(Function<bool(const FS::DirectoryEntry&)>) const = 0;
virtual RefPtr<Inode> lookup(StringView name) = 0;
virtual ssize_t write_bytes(off_t, ssize_t, const u8* data, FileDescription*) = 0;
virtual KResult add_child(InodeIdentifier child_id, const StringView& name, mode_t) = 0;