You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: fs.rs
    path of file: ./repos/aero/src/aero_kernel/src/syscall
    
    the code of the file until where you have to start completion: // Copyright (C) 2021-2024 The Aero Project Developers.
//
// This file is part of The Aero Project.
//
// Aero is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as publi
    
pub fn read_link(path: &Path, buffer: &mut [u8]) -> Result<usize, SyscallError> {
    // XXX: lookup_path with automatically resolve the link.
    let file = fs::lookup_path(path)?;
    let resolved_path = file.absolute_path_str();
    let size = core::cmp::min(resolved_path.len(), buffer.len());

    buffer[..size].copy_from_slice(&resolved_path.as_bytes()[..size]);
    Ok(size)
}