IOCTL_SERENUM_GET_PORT_NAME - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
// ntddser.h

// CTL_CODE(0x0037, 0x083, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_SERENUM_GET_PORT_NAME 0x0037020C
View the official Windows Driver Kit DDI reference

NtDoc

No description available.

Edit description on GitHub

Windows Driver Kit DDI reference (ni-ntddser-ioctl_serenum_get_port_name)

IOCTL_SERENUM_GET_PORT_NAME IOCTL

Description

The IOCTL_SERENUM_GET_PORT_NAME request returns the value of the PortName (or Identifier) entry value for the RS-232 port -- see Registry Settings for a Plug and Play Serial Device.

Parameters

Major code

Input buffer

None.

Input buffer length

None.

Output buffer

The AssociatedIrp.SystemBuffer member points to a client-allocated buffer that Serenum uses to output the port name. The port name is a null-terminated Unicode string.

Output buffer length

The Parameters.DeviceIoControl.OutputBufferLength member is set to the size in bytes of a client-allocated output buffer.

Input/output buffer

Input/output buffer length

Status block

If the request is successful, the Information member is set to the size in bytes of the null-terminated Unicode string that is returned in the client's output buffer.

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

STATUS_BUFFER_TOO_SMALL

The output buffer is too small to hold the port name string.

STATUS_SUCCESS

The request completed successfully.

STATUS_UNSUCCESSFUL

An error occurred when opening the registry key for the device or reading the PortName (or Identifier) entry value.

View the official Windows Driver Kit DDI reference

Edit description on GitHub