FSCTL_FILESYSTEM_GET_STATISTICS_EX IOCTL

Description

Retrieves the information from various file system performance counters.Support for this control code started with Windows 10.

To perform this operation, call the DeviceIoControl function with the following parameters.

BOOL DeviceIoControl(
  (HANDLE) hDevice,                     // handle to device
  FSCTL_FILESYSTEM_GET_STATISTICS_EX,   // dwIoControlCode
  NULL,                                 // lpInBuffer
  0,                                    // nInBufferSize
  (LPVOID) lpOutBuffer,                 // output buffer
  (DWORD) nOutBufferSize,               // size of output buffer
  (LPDWORD) lpBytesReturned,            // number of bytes returned
  (LPOVERLAPPED) lpOverlapped           // OVERLAPPED structure
);

Parameters

Input buffer

Input buffer length

Output buffer

Output buffer length

Input/output buffer

Input/output buffer length

Status block

Irp->IoStatus.Status is set to STATUS_SUCCESS if the request is successful.

Otherwise, Status to the appropriate error condition as a NTSTATUS code.

For more information, see NTSTATUS Values.

Remarks

In Windows 10, this code is supported by the following technologies.

See also

• CreateFile
• DeviceIoControl
• FILESYSTEM_STATISTICS_EX
• File Management Control Codes