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NtIoCompletionNative.cs
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NtIoCompletionNative.cs
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// Copyright 2019 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http:https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
using NtApiDotNet.Utilities.Reflection;
using System;
using System.Runtime.InteropServices;
namespace NtApiDotNet
{
#pragma warning disable 1591
[Flags]
public enum IoCompletionAccessRights : uint
{
[SDKName("IO_COMPLETION_QUERY_STATE")]
QueryState = 1,
[SDKName("IO_COMPLETION_SET_COMPLETION")]
SetCompletion = 2,
[SDKName("GENERIC_READ")]
GenericRead = GenericAccessRights.GenericRead,
[SDKName("GENERIC_WRITE")]
GenericWrite = GenericAccessRights.GenericWrite,
[SDKName("GENERIC_EXECUTE")]
GenericExecute = GenericAccessRights.GenericExecute,
[SDKName("GENERIC_ALL")]
GenericAll = GenericAccessRights.GenericAll,
[SDKName("DELETE")]
Delete = GenericAccessRights.Delete,
[SDKName("READ_CONTROL")]
ReadControl = GenericAccessRights.ReadControl,
[SDKName("WRITE_DAC")]
WriteDac = GenericAccessRights.WriteDac,
[SDKName("WRITE_OWNER")]
WriteOwner = GenericAccessRights.WriteOwner,
[SDKName("SYNCHRONIZE")]
Synchronize = GenericAccessRights.Synchronize,
[SDKName("MAXIMUM_ALLOWED")]
MaximumAllowed = GenericAccessRights.MaximumAllowed,
[SDKName("ACCESS_SYSTEM_SECURITY")]
AccessSystemSecurity = GenericAccessRights.AccessSystemSecurity
}
public enum IoCompletionInformationClass
{
IoCompletionBasicInformation
}
[StructLayout(LayoutKind.Sequential)]
public struct FileIoCompletionInformation
{
public IntPtr KeyContext;
public IntPtr ApcContext;
public IoStatusStruct IoStatusBlock;
}
public class FileIoCompletionResult
{
public IntPtr KeyContext { get; }
public IntPtr ApcContext { get; }
public IoStatus IoStatusBlock { get; }
internal FileIoCompletionResult(FileIoCompletionInformation result)
{
KeyContext = result.KeyContext;
ApcContext = result.ApcContext;
IoStatusBlock = new IoStatus()
{
Information = result.IoStatusBlock.Information,
Pointer = result.IoStatusBlock.Pointer
};
}
internal FileIoCompletionResult(IntPtr key_context, IntPtr apc_context, IoStatus io_status)
{
KeyContext = key_context;
ApcContext = apc_context;
IoStatusBlock = io_status;
}
}
public struct IoCompletionBasicInformation
{
public int Depth;
}
public static partial class NtSystemCalls
{
[DllImport("ntdll.dll")]
public static extern NtStatus NtCreateIoCompletion(
out SafeKernelObjectHandle IoCompletionHandle,
IoCompletionAccessRights DesiredAccess,
[In] ObjectAttributes ObjectAttributes,
int NumberOfConcurrentThreads
);
[DllImport("ntdll.dll")]
public static extern NtStatus NtOpenIoCompletion(
out SafeKernelObjectHandle IoCompletionHandle,
IoCompletionAccessRights DesiredAccess,
[In] ObjectAttributes ObjectAttributes
);
[DllImport("ntdll.dll")]
public static extern NtStatus NtRemoveIoCompletion(
SafeKernelObjectHandle IoCompletionHandle,
out IntPtr KeyContext,
out IntPtr ApcContext,
[In, Out] IoStatus IoStatusBlock,
LargeInteger Timeout
);
[DllImport("ntdll.dll")]
public static extern NtStatus NtRemoveIoCompletionEx(
SafeKernelObjectHandle IoCompletionHandle,
[Out] FileIoCompletionInformation[] IoCompletionInformation,
int InformationCount,
out int NumEntriesRemoved,
[In] LargeInteger Timeout,
bool Alertable
);
[DllImport("ntdll.dll")]
public static extern NtStatus NtQueryIoCompletion(
SafeKernelObjectHandle IoCompletionHandle,
IoCompletionInformationClass IoCompletionInformationClass,
SafeBuffer IoCompletionInformation,
int IoCompletionInformationLength,
out int ReturnLength
);
[DllImport("ntdll.dll")]
public static extern NtStatus NtSetIoCompletion(
SafeKernelObjectHandle IoCompletionHandle,
IntPtr KeyContext,
IntPtr ApcContext,
NtStatus Status,
IntPtr IoStatusInformation
);
[DllImport("ntdll.dll")]
public static extern NtStatus NtSetIoCompletionEx(
SafeKernelObjectHandle IoCompletionHandle,
SafeKernelObjectHandle IoCompletionPacketHandle,
IntPtr KeyContext,
IntPtr ApcContext,
NtStatus IoStatus,
IntPtr IoStatusInformation
);
}
#pragma warning restore 1591
}