zircon/experimental/syscalls/ktrace.test.fidl

// Copyright 2019 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.

// !!! THIS FILE IS NOT YET USED !!!
// See //zircon/system/public/zircon/syscalls.banjo.
// !!! THIS FILE IS NOT YET USED !!!

library zz;

[Transport="Syscall"]
protocol Ktrace {
    // TODO(scottmg): This is another one where it's:
    //   (handle, data, offset, data_size)
    // rather than:
    //   (handle, data, data_size, offset).
    [In0="handle<resource>:kind=ROOT",
     In1="mutable<vector<byte>>"]
    Read(handle<resource> handle, vector<byte> data, uint32 offset) ->
        (status status, usize actual);

    // TODO(scottmg): syscalls.banjo had the length of |ptr| being |action|?
    [In0="handle<resource>:kind=ROOT",
     In3="mutable<byte>"]
    Control(handle<resource> handle, uint32 action, uint32 options, byte ptr) -> (status status);

    [In0="handle<resource>:kind=ROOT"]
    Write(handle<resource> handle, uint32 id, uint32 arg0, uint32 arg1) -> (status status);
};