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dotnet: implement Control operation

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This commit is contained in:
Bill Zissimopoulos 2018-05-04 14:51:48 -07:00
parent 05f622f2de
commit 637a1dac7e
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GPG Key ID: 3D4F95D52C7B3EA3
3 changed files with 83 additions and 1 deletions
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43
src/dotnet/FileSystemBase.cs
View File

@ -966,6 +966,49 @@ namespace Fsp
FileInfo = default(FileInfo);
return STATUS_INVALID_DEVICE_REQUEST;
}
/// <summary>
/// Processes a control code.
/// </summary>
/// <remarks>
/// This function is called when a program uses the DeviceIoControl API.
/// </remarks>
/// <param name="FileNode">
/// The file node of the file or directory to be controled.
/// </param>
/// <param name="FileDesc">
/// The file descriptor of the file or directory to be controled.
/// </param>
/// <param name="ControlCode">
/// The control code for the operation. This code must have a DeviceType with bit
/// 0x8000 set and must have a TransferType of METHOD_BUFFERED.
/// </param>
/// <param name="InputBuffer">
/// Pointer to a buffer that contains the input data.
/// </param>
/// <param name="InputBufferLength">
/// Input data length.
/// </param>
/// <param name="OutputBuffer">
/// Pointer to a buffer that will receive the output data.
/// </param>
/// <param name="OutputBufferLength">
/// Output data length.
/// </param>
/// <param name="BytesTransferred">
/// Receives the actual number of bytes transferred.
/// </param>
/// <returns>STATUS_SUCCESS or error code.</returns>
public virtual Int32 Control(
Object FileNode,
Object FileDesc,
UInt32 ControlCode,
IntPtr InputBuffer, UInt32 InputBufferLength,
IntPtr OutputBuffer, UInt32 OutputBufferLength,
out UInt32 BytesTransferred)
{
BytesTransferred = default(UInt32);
return STATUS_INVALID_DEVICE_REQUEST;
}
/* helpers */
/// <summary>

30
src/dotnet/FileSystemHost.cs
View File

@ -1020,6 +1020,35 @@ namespace Fsp
return ExceptionHandler(FileSystem, ex);
}
}
private static Int32 Control(
IntPtr FileSystemPtr,
ref FullContext FullContext,
UInt32 ControlCode,
IntPtr InputBuffer, UInt32 InputBufferLength,
IntPtr OutputBuffer, UInt32 OutputBufferLength,
out UInt32 PBytesTransferred)
{
FileSystemBase FileSystem = (FileSystemBase)Api.GetUserContext(FileSystemPtr);
try
{
Object FileNode, FileDesc;
Api.GetFullContext(ref FullContext, out FileNode, out FileDesc);
return FileSystem.Control(
FileNode,
FileDesc,
ControlCode,
InputBuffer,
InputBufferLength,
OutputBuffer,
OutputBufferLength,
out PBytesTransferred);
}
catch (Exception ex)
{
PBytesTransferred = default(UInt32);
return ExceptionHandler(FileSystem, ex);
}
}
static FileSystemHost()
{
@ -1048,6 +1077,7 @@ namespace Fsp
_FileSystemInterface.DeleteReparsePoint = DeleteReparsePoint;
_FileSystemInterface.GetStreamInfo = GetStreamInfo;
_FileSystemInterface.GetDirInfoByName = GetDirInfoByName;
_FileSystemInterface.Control = Control;
_FileSystemInterfacePtr = Marshal.AllocHGlobal(FileSystemInterface.Size);
Marshal.StructureToPtr(_FileSystemInterface, _FileSystemInterfacePtr, false);

11
src/dotnet/Interop.cs
View File

@ -457,6 +457,14 @@ namespace Fsp.Interop
ref FullContext FullContext,
[MarshalAs(UnmanagedType.LPWStr)] String FileName,
out DirInfo DirInfo);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
internal delegate Int32 Control(
IntPtr FileSystem,
ref FullContext FullContext,
UInt32 ControlCode,
IntPtr InputBuffer, UInt32 InputBufferLength,
IntPtr OutputBuffer, UInt32 OutputBufferLength,
out UInt32 PBytesTransferred);
}
internal static int Size = IntPtr.Size * 64;
@ -486,7 +494,8 @@ namespace Fsp.Interop
internal Proto.DeleteReparsePoint DeleteReparsePoint;
internal Proto.GetStreamInfo GetStreamInfo;
internal Proto.GetDirInfoByName GetDirInfoByName;
/* NTSTATUS (*Reserved[39])(); */
internal Proto.Control Control;
/* NTSTATUS (*Reserved[38])(); */
}
[SuppressUnmanagedCodeSecurity]