UnexpectedEof, error: "failed to fill whole buffer"

[gustawdaniel]

Reproduction:

cd tool
touch file
cargo run -- dump-ls file

I have ext4 but I see

Error: while processing 'file'

Caused by:
    0: failed to parse superblock
    1: failed to fill whole buffer

I added

            println!("ERR: {:?}", error);

in on_fs, and seen:

ERR: Custom { kind: UnexpectedEof, error: "failed to fill whole buffer" }

Reader seems to be ok

reader File { fd: 3, path: "/home/daniel/exp/ext4-rs/tool/file", read: true, write: false }