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IOCTL_POINT_OF_SERVICE_RELEASE_DEVICE IOCTL (pointofservicedriverinterface.h)

  • Article

This I/O control function is called when a client is ready to relinquish its claim on a device.

Major code

IRP_MJ_DEVICE_CONTROL

Input buffer

Not used with this operation; set to NULL.

Input buffer length

Not used with this operation; set to 0 (zero).

Output buffer

Not used with this operation; set to NULL.

Output buffer length

Not used with this operation; set to 0 (zero).

Status block

Returns TRUE if successful; otherwise, returns FALSE.

Remarks

To get extended error information, call GetLastError. The following list shows common error values:

  • STATUS_ACCESS_DENIED: The device is currently claimed by another client.

  • STATUS_DEVICE_NOT_READY: The POS library has not been successfully initialized.

The driver can handle this IOCTL by calling PosCxReleaseDevice.

To use this IOCTL, the client must have previously called IOCTL_POINT_OF_SERVICE_CLAIM_DEVICE.

Requirements

Requirement Value
Header pointofservicedriverinterface.h (include Pointofservicedriverinterface.h)