IRP_MJ_SET_INFORMATION (Serial)

The IRP_MJ_SET_INFORMATION request sets the end-of-file information on a COM port.

When Sent

A client uses a set information request to change the current end-of-file position of a file opened on a COM port.

Input Parameters

The Parameters.SetFile.FileInformationClass member is set to FileEndOfFileInformation or FileAllocationInformation.

Output Parameters

None.

I/O Status Block

If the request is successful, the Information member is set to zero.

The Status member is set to one of the following status values:

STATUS_SUCCESS: The request completed successfully.
STATUS_CANCELLED: A client canceled the request. Serial also cancels a request if a device error occurs and Serial is configured to cancel a request if there is a device error.
STATUS_DELETE_PENDING: Serial is in the process of removing the device.
STATUS_INVALID_PARAMETER: The specified end-of-file information is not supported.
STATUS_PENDING: Serial queued the request for later processing.

Headers

Defined in wdm.h and ntddk.h. Include wdm.h or ntddk.h.

Operation

Serial supports requests of type FileEndOfFileInformation and FileAllocationInformation. However, Serial does not actually set file information. The end-of-file position is always set to zero.