/// <summary>
/// Creates an instance of a flow and registers it with this IoFlowRuntime instance.
/// </summary>
/// <param name="flowId">An id unique to this flow e.g. from GetNextFreeFlowId(). </param>
/// <param name="context">Additional context you want to keep for this flow.</param>
/// <param name="accountName">A Windows account name for use in I/O classification.</param>
/// <param name="sid">A Windows SID for use in I/O classification.</param>
/// <param name="fileName">A windows file name used in I/O classification.</param>
/// <param name="callbackPreCreate">Optional PreOp callback on CREATE IRPs.</param>
/// <param name="callbackPostCreate">Optional PostOp callback on CREATE IRPs.</param>
/// <param name="callbackPreRead">Optional PreOp callback on READ IRPs.</param>
/// <param name="callbackPostRead">Optional PostOp callback on READ IRPs.</param>
/// <param name="callbackPreWrite">Optional PreOp callback on WRITE IRPs.</param>
/// <param name="callbackPostWrite">Optional PostOp callback on READ IRPs.</param>
/// <param name="callbackPreCleanup">Optional PreOp callback on CLEANUP IRPs.</param>
/// <param name="callbackPostCleanup">Optional PostOp callback on CLEANUP IRPs.</param>
/// <param name="callbackPreLockControl">Optional PreOp callback on LOCKCONTROL IRPs.</param>
public IoFlow(
uint flowId,
object context,
string accountName,
SecurityIdentifier sid,
string fileName,
CallbackPreCreate callbackPreCreate,
CallbackPostCreate callbackPostCreate,
CallbackPreRead callbackPreRead,
CallbackPostRead callbackPostRead,
CallbackPreWrite callbackPreWrite,
CallbackPostWrite callbackPostWrite,
CallbackPreCleanup callbackPreCleanup,
CallbackPostCleanup callbackPostCleanup,
CallbackPreLockControl callbackPreLockControl)
{
this.flowId = flowId;
this.context = context;
this.accountName = accountName;
this.fileName = fileName;
this.sid = sid;
flags = 0x00;
flags |= (callbackPreCreate != null ? (uint)IoFlowFlags.PreCreate : flags);
flags |= (callbackPostCreate != null ? (uint)IoFlowFlags.PostCreate : flags);
flags |= (callbackPreRead != null ? (uint)IoFlowFlags.PreRead : flags);
flags |= (callbackPostRead != null ? (uint)IoFlowFlags.PostRead : flags);
flags |= (callbackPreWrite != null ? (uint)IoFlowFlags.PreWrite : flags);
flags |= (callbackPostWrite != null ? (uint)IoFlowFlags.PostWrite : flags);
flags |= (callbackPreCleanup != null ? (uint)IoFlowFlags.PreCleanup : flags);
flags |= (callbackPostCleanup != null ? (uint)IoFlowFlags.PostCleanup : flags);
flags |= (callbackPreLockControl != null ? (uint)IoFlowFlags.PreLockControl : flags);
this.callbackPreCreate = (callbackPreCreate != null ? callbackPreCreate : InvalidPreCreate);
this.callbackPostCreate = (callbackPostCreate != null ? callbackPostCreate : InvalidPostCreate);
this.callbackPreRead = (callbackPreRead != null ? callbackPreRead : InvalidPreRead);
this.callbackPostRead = (callbackPostRead != null ? callbackPostRead : InvalidPostRead);
this.callbackPreWrite = (callbackPreWrite != null ? callbackPreWrite : InvalidPreWrite);
this.callbackPostWrite = (callbackPostWrite != null ? callbackPostWrite : InvalidPostWrite);
this.callbackPreCleanup = (callbackPreCleanup != null ? callbackPreCleanup : InvalidPreCleanup);
this.callbackPostCleanup = (callbackPostCleanup != null ? callbackPostCleanup : InvalidPostCleanup);
this.callbackPreLockControl = (callbackPreLockControl != null ? callbackPreLockControl : InvalidPreLockControl);
IrpList = new Queue <IRP>();
}
/// <summary>
/// Creates an instance of a flow and registers it with this IoFlowRuntime instance.
/// </summary>
/// <param name="flowId">An id unique to this flow e.g. from GetNextFreeFlowId(). </param>
/// <param name="context">Additional context you want to keep for this flow.</param>
/// <param name="accountName">A Windows account name for use in I/O classification.</param>
/// <param name="sid">A Windows SID for use in I/O classification.</param>
/// <param name="fileName">A windows file name used in I/O classification.</param>
/// <param name="callbackPreCreate">Optional PreOp callback on CREATE IRPs.</param>
/// <param name="callbackPostCreate">Optional PostOp callback on CREATE IRPs.</param>
/// <param name="callbackPreRead">Optional PreOp callback on READ IRPs.</param>
/// <param name="callbackPostRead">Optional PostOp callback on READ IRPs.</param>
/// <param name="callbackPreWrite">Optional PreOp callback on WRITE IRPs.</param>
/// <param name="callbackPostWrite">Optional PostOp callback on READ IRPs.</param>
/// <param name="callbackPreCleanup">Optional PreOp callback on CLEANUP IRPs.</param>
/// <param name="callbackPostCleanup">Optional PostOp callback on CLEANUP IRPs.</param>
/// <param name="callbackPreLockControl">Optional PreOp callback on LOCKCONTROL IRPs.</param>
public IoFlow(
uint flowId,
object context,
string accountName,
SecurityIdentifier sid,
string fileName,
CallbackPreCreate callbackPreCreate,
CallbackPostCreate callbackPostCreate,
CallbackPreRead callbackPreRead,
CallbackPostRead callbackPostRead,
CallbackPreWrite callbackPreWrite,
CallbackPostWrite callbackPostWrite,
CallbackPreCleanup callbackPreCleanup,
CallbackPostCleanup callbackPostCleanup,
CallbackPreLockControl callbackPreLockControl)
{
this.flowId = flowId;
this.context = context;
this.accountName = accountName;
this.fileName = fileName;
this.sid = sid;
flags = 0x00;
flags |= (callbackPreCreate != null ? (uint)IoFlowFlags.PreCreate : flags);
flags |= (callbackPostCreate != null ? (uint)IoFlowFlags.PostCreate : flags);
flags |= (callbackPreRead != null ? (uint)IoFlowFlags.PreRead : flags);
flags |= (callbackPostRead != null ? (uint)IoFlowFlags.PostRead : flags);
flags |= (callbackPreWrite != null ? (uint)IoFlowFlags.PreWrite : flags);
flags |= (callbackPostWrite != null ? (uint)IoFlowFlags.PostWrite : flags);
flags |= (callbackPreCleanup != null ? (uint)IoFlowFlags.PreCleanup : flags);
flags |= (callbackPostCleanup != null ? (uint)IoFlowFlags.PostCleanup : flags);
flags |= (callbackPreLockControl != null ? (uint)IoFlowFlags.PreLockControl : flags);
this.callbackPreCreate = (callbackPreCreate != null ? callbackPreCreate : InvalidPreCreate);
this.callbackPostCreate = (callbackPostCreate != null ? callbackPostCreate : InvalidPostCreate);
this.callbackPreRead = ( callbackPreRead != null ? callbackPreRead : InvalidPreRead );
this.callbackPostRead = ( callbackPostRead != null ? callbackPostRead : InvalidPostRead );
this.callbackPreWrite = ( callbackPreWrite != null ? callbackPreWrite : InvalidPreWrite );
this.callbackPostWrite = ( callbackPostWrite != null ? callbackPostWrite : InvalidPostWrite );
this.callbackPreCleanup = (callbackPreCleanup != null ? callbackPreCleanup : InvalidPreCleanup);
this.callbackPostCleanup = (callbackPostCleanup != null ? callbackPostCleanup : InvalidPostCleanup);
this.callbackPreLockControl = (callbackPreLockControl != null ? callbackPreLockControl : InvalidPreLockControl);
IrpList = new Queue<IRP>();
}
/// <summary>
/// Creates an IoFlow structure in runtime and corresponding structures (Flow and RAP)
/// in the driver.
/// </summary>
/// <param name="accountName">A valid NT security account of form EUROPE\gregos.</param>
/// <param name="fileName">A valid file name of form C:\tmp\gregos.txt or \Device\HarddiskVolumen\tmp\gregos.txt</param>
/// <param name="callbackPreCreate">Callback func to invoke for IRPs on PreCreate path.
/// Corresponds to an IFS Minifilter PRE_OPERATION callback ref http://msdn.microsoft.com/en-us/library/windows/hardware/ff551109(v=vs.85).aspx</param>
/// <param name="callbackPostCreate">Callback func to invoke for IRPs on PostCreate path.
/// Corresponds to an IFS Minifilter POST_OPERATION callback ref http://msdn.microsoft.com/en-us/library/windows/hardware/ff551107(v=vs.85).aspx</param>
/// <param name="callbackPreRead">Callback func to invoke for IRPs on PreRead path.
/// Corresponds to an IFS Minifilter PRE_OPERATION callback ref http://msdn.microsoft.com/en-us/library/windows/hardware/ff551109(v=vs.85).aspx</param>
/// <param name="callbackPostRead">Callback func to invoke for IRPs on PostRead path
/// Corresponds to an IFS Minifilter POST_OPERATION callback ref http://msdn.microsoft.com/en-us/library/windows/hardware/ff551107(v=vs.85).aspx</param>
/// <param name="callbackPreWrite">Callback func to invoke for IRPs on PreWrite path.
/// Corresponds to an IFS Minifilter PRE_OPERATION callback ref http://msdn.microsoft.com/en-us/library/windows/hardware/ff551109(v=vs.85).aspx</param>
/// <param name="callbackPostWrite">Callback func to invoke for IRPs on PostWrite path.
/// Corresponds to an IFS Minifilter POST_OPERATION callback ref http://msdn.microsoft.com/en-us/library/windows/hardware/ff551107(v=vs.85).aspx</param>
/// <param name="callbackPreCleanup">Callback func to invoke for IRPs on PreCleanup path.
/// Corresponds to an IFS Minifilter PRE_OPERATION callback ref http://msdn.microsoft.com/en-us/library/windows/hardware/ff551109(v=vs.85).aspx</param>
/// <param name="callbackPostCreate">Callback func to invoke for IRPs on PostCleanup path.
/// Corresponds to an IFS Minifilter POST_OPERATION callback ref http://msdn.microsoft.com/en-us/library/windows/hardware/ff551107(v=vs.85).aspx</param>
/// <param name="context">Some object reference of your own for additional state associated with thie IoFlow</param>
/// <returns></returns>
public IoFlow CreateFlow(
uint flowId,
string accountName,
string fileName,
CallbackPreCreate callbackPreCreate,
CallbackPostCreate callbackPostCreate,
CallbackPreRead callbackPreRead,
CallbackPostRead callbackPostRead,
CallbackPreWrite callbackPreWrite,
CallbackPostWrite callbackPostWrite,
CallbackPreCleanup callbackPreCleanup,
CallbackPostCleanup callbackPostCleanup,
CallbackPreLockControl callbackPreLockControl,
object context)
{
IoFlow ioFlow = null;
//
// Validate fileName, transforming drive letters to volume names.
//
fileName = fileName.ToLower();
string origFilename = fileName;
if (string.IsNullOrEmpty(fileName) || string.IsNullOrWhiteSpace(fileName))
{
throw new ArgumentNullException("fileName");
}
else if (fileName.Length < 2)
{
throw new ArgumentOutOfRangeException("fileName", "too short");
}
else if (fileName.Substring(1, 1).Equals(@":"))
{
string driveName = fileName.Substring(0, 2); // think "C:"
string deviceName = "";
if (DriveNameToVolumeName.TryGetValue(driveName, out deviceName))
{
fileName = deviceName + fileName.Substring(2);
}
}
if (fileName.ToLower().StartsWith(DeviceMup.ToLower()))
{
Debug.Assert(0 == 1); //XXXIS: don't use \device\mup in the paths in the config file
}
else if (fileName.ToLower().StartsWith(RemoteDeviceSlash.ToLower()))
{
fileName = DeviceMup + fileName;
}
else if (fileName.ToLower().StartsWith(RemoteDeviceDoubleSlash.ToLower()))
{
fileName = DeviceMup + fileName.Substring(1);
}
else if (!fileName.ToLower().StartsWith(DeviceHarddiskVolume))
{
throw new ArgumentException(@"must be format e.g. C: or \Device\HarddiskVolume", "fileName");
}
#if gregos // "XXXET: not used, just for testing" crashes on launch due to FileToBlock.dll not found
// for lock drives, test physical offset code
// XXXET: not used, just for testing
if (fileName.Substring(1, 1).Equals(@":") ||
origFilename.ToLower().StartsWith(DeviceHarddiskVolume))
{
if (origFilename.ToLower().StartsWith(DeviceHarddiskVolume))
{
origFilename = getDriveLetterFileName(origFilename);
}
Int64 poffset = FileToBlock.GetPhysicalOffset(origFilename);
Console.WriteLine("File {0} starts in physical offset {1}", origFilename, poffset);
}
#endif
//
// Get SID for the given account name.
//
SecurityIdentifier sid = SidLookup(accountName);
//
// Create IoFlow object.
//
LockIoFlow.EnterWriteLock();
try
{
ioFlow = new IoFlow(flowId, context, accountName, sid, fileName,
callbackPreCreate, callbackPostCreate,
callbackPreRead, callbackPostRead,
callbackPreWrite, callbackPostWrite,
callbackPreCleanup, callbackPostCleanup,
callbackPreLockControl);
DictIoFlow.Add(flowId, ioFlow);
Driver.CreateFlow.Request(hControlPort, TenantId, flowId, ioFlow.Flags);
Driver.CreateRap.Request(hControlPort, TenantId, flowId, accountName, sid, fileName);
}
catch (ExceptionIoFlow)
{
DriverReset();
throw;
}
LockIoFlow.ExitWriteLock();
return(ioFlow);
}
/// <summary>
/// Creates an IoFlow structure in runtime and corresponding structures (Flow and RAP)
/// in the driver.
/// </summary>
/// <param name="accountName">A valid NT security account of form EUROPE\gregos.</param>
/// <param name="fileName">A valid file name of form C:\tmp\gregos.txt or \Device\HarddiskVolumen\tmp\gregos.txt</param>
/// <param name="callbackPreCreate">Callback func to invoke for IRPs on PreCreate path.
/// Corresponds to an IFS Minifilter PRE_OPERATION callback ref http://msdn.microsoft.com/en-us/library/windows/hardware/ff551109(v=vs.85).aspx</param>
/// <param name="callbackPostCreate">Callback func to invoke for IRPs on PostCreate path.
/// Corresponds to an IFS Minifilter POST_OPERATION callback ref http://msdn.microsoft.com/en-us/library/windows/hardware/ff551107(v=vs.85).aspx</param>
/// <param name="callbackPreRead">Callback func to invoke for IRPs on PreRead path.
/// Corresponds to an IFS Minifilter PRE_OPERATION callback ref http://msdn.microsoft.com/en-us/library/windows/hardware/ff551109(v=vs.85).aspx</param>
/// <param name="callbackPostRead">Callback func to invoke for IRPs on PostRead path
/// Corresponds to an IFS Minifilter POST_OPERATION callback ref http://msdn.microsoft.com/en-us/library/windows/hardware/ff551107(v=vs.85).aspx</param>
/// <param name="callbackPreWrite">Callback func to invoke for IRPs on PreWrite path.
/// Corresponds to an IFS Minifilter PRE_OPERATION callback ref http://msdn.microsoft.com/en-us/library/windows/hardware/ff551109(v=vs.85).aspx</param>
/// <param name="callbackPostWrite">Callback func to invoke for IRPs on PostWrite path.
/// Corresponds to an IFS Minifilter POST_OPERATION callback ref http://msdn.microsoft.com/en-us/library/windows/hardware/ff551107(v=vs.85).aspx</param>
/// <param name="callbackPreCleanup">Callback func to invoke for IRPs on PreCleanup path.
/// Corresponds to an IFS Minifilter PRE_OPERATION callback ref http://msdn.microsoft.com/en-us/library/windows/hardware/ff551109(v=vs.85).aspx</param>
/// <param name="callbackPostCreate">Callback func to invoke for IRPs on PostCleanup path.
/// Corresponds to an IFS Minifilter POST_OPERATION callback ref http://msdn.microsoft.com/en-us/library/windows/hardware/ff551107(v=vs.85).aspx</param>
/// <param name="context">Some object reference of your own for additional state associated with thie IoFlow</param>
/// <returns></returns>
public IoFlow CreateFlow(
uint flowId,
string accountName,
string fileName,
CallbackPreCreate callbackPreCreate,
CallbackPostCreate callbackPostCreate,
CallbackPreRead callbackPreRead,
CallbackPostRead callbackPostRead,
CallbackPreWrite callbackPreWrite,
CallbackPostWrite callbackPostWrite,
CallbackPreCleanup callbackPreCleanup,
CallbackPostCleanup callbackPostCleanup,
CallbackPreLockControl callbackPreLockControl,
object context)
{
IoFlow ioFlow = null;
//
// Validate fileName, transforming drive letters to volume names.
//
fileName = fileName.ToLower();
string origFilename = fileName;
if (string.IsNullOrEmpty(fileName) || string.IsNullOrWhiteSpace(fileName))
throw new ArgumentNullException("fileName");
else if (fileName.Length < 2)
throw new ArgumentOutOfRangeException("fileName", "too short");
else if (fileName.Substring(1, 1).Equals(@":"))
{
string driveName = fileName.Substring(0, 2); // think "C:"
string deviceName = "";
if (DriveNameToVolumeName.TryGetValue(driveName, out deviceName))
fileName = deviceName + fileName.Substring(2);
}
if (fileName.ToLower().StartsWith(DeviceMup.ToLower()))
{
Debug.Assert(0 == 1); //XXXIS: don't use \device\mup in the paths in the config file
}
else if (fileName.ToLower().StartsWith(RemoteDeviceSlash.ToLower()))
{
fileName = DeviceMup + fileName;
}
else if (fileName.ToLower().StartsWith(RemoteDeviceDoubleSlash.ToLower()))
{
fileName = DeviceMup + fileName.Substring(1);
}
else if (!fileName.ToLower().StartsWith(DeviceHarddiskVolume))
throw new ArgumentException(@"must be format e.g. C: or \Device\HarddiskVolume", "fileName");
#if gregos // "XXXET: not used, just for testing" crashes on launch due to FileToBlock.dll not found
// for lock drives, test physical offset code
// XXXET: not used, just for testing
if (fileName.Substring(1, 1).Equals(@":") ||
origFilename.ToLower().StartsWith(DeviceHarddiskVolume))
{
if (origFilename.ToLower().StartsWith(DeviceHarddiskVolume))
{
origFilename = getDriveLetterFileName(origFilename);
}
Int64 poffset = FileToBlock.GetPhysicalOffset(origFilename);
Console.WriteLine("File {0} starts in physical offset {1}", origFilename, poffset);
}
#endif
//
// Get SID for the given account name.
//
SecurityIdentifier sid = SidLookup(accountName);
//
// Create IoFlow object.
//
LockIoFlow.EnterWriteLock();
try
{
ioFlow = new IoFlow(flowId, context, accountName, sid, fileName,
callbackPreCreate, callbackPostCreate,
callbackPreRead, callbackPostRead,
callbackPreWrite, callbackPostWrite,
callbackPreCleanup, callbackPostCleanup,
callbackPreLockControl);
DictIoFlow.Add(flowId, ioFlow);
Driver.CreateFlow.Request(hControlPort, TenantId, flowId, ioFlow.Flags);
Driver.CreateRap.Request(hControlPort, TenantId, flowId, accountName, sid, fileName);
}
catch (ExceptionIoFlow)
{
DriverReset();
throw;
}
LockIoFlow.ExitWriteLock();
return ioFlow;
}
