src/starnix/modules/procfs/uid_io.rs

// Copyright 2025 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

use starnix_core::vfs::pseudo::simple_directory::SimpleDirectory;
use starnix_core::vfs::pseudo::stub_empty_file::StubEmptyFile;
use starnix_core::vfs::{FileSystemHandle, FsNodeHandle};
use starnix_logging::bug_ref;
use starnix_uapi::file_mode::mode;

pub fn uid_io_directory(fs: &FileSystemHandle) -> FsNodeHandle {
    let dir = SimpleDirectory::new();
    dir.edit(fs, |dir| {
        dir.entry(
            "stats",
            StubEmptyFile::new_node("/proc/uid_io/stats", bug_ref!("https://fxbug.dev/322893966")),
            mode!(IFREG, 0o444),
        );
    });
    // TODO: Validate the mode bits are correct.
    dir.into_node(fs, 0o777)
}