Kernel: Make File::write() and File::read() return KResultOr<size_t>

Instead of returning a ssize_t where negative values mean error,
we now return KResultOr<size_t> and use the error state to report
errors exclusively.

1 files changed, 2 insertions, 2 deletions

diff --git a/Kernel/TTY/PTYMultiplexer.h b/Kernel/TTY/PTYMultiplexer.h
index e8b4e89d1a..15bb4bdc19 100644
--- a/Kernel/TTY/PTYMultiplexer.h
+++ b/Kernel/TTY/PTYMultiplexer.h
@@ -44,8 +44,8 @@ public:
 
     // ^CharacterDevice
     virtual KResultOr<NonnullRefPtr<FileDescription>> open(int options) override;
-    virtual ssize_t read(FileDescription&, size_t, u8*, ssize_t) override { return 0; }
-    virtual ssize_t write(FileDescription&, size_t, const u8*, ssize_t) override { return 0; }
+    virtual KResultOr<size_t> read(FileDescription&, size_t, u8*, size_t) override { return 0; }
+    virtual KResultOr<size_t> write(FileDescription&, size_t, const u8*, size_t) override { return 0; }
     virtual bool can_read(const FileDescription&, size_t) const override { return true; }
     virtual bool can_write(const FileDescription&, size_t) const override { return true; }