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2.5.3 FileFsDriverPathInformation

This information class is used locally to query if a given driver is in the I/O path for a file system volume.

A FILE_FS_DRIVER_PATH_INFORMATION data element, defined as follows, is returned to the caller.


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DriverInPath

Reserved

DriverNameLength

DriverName (variable)

...

DriverInPath (1 byte): A Boolean (section 2.1.8) value. Set to TRUE if the driver is in the I/O path for the file system volume; set to FALSE otherwise.

Reserved (3 bytes): Reserved for alignment. This field can contain any value and MUST be ignored.

DriverNameLength (4 bytes): A 32-bit unsigned integer that contains the length of the DriverName string.

DriverName (variable): A variable-length Unicode field containing the name of the driver for which to query. This sequence of Unicode characters MUST NOT be null-terminated.

This operation returns a status code as specified in section 2.2. Upon success, the status code returned by the function that processes this file system information class is STATUS_SUCCESS. The most common error codes are listed in the following table.

Error code

Meaning

STATUS_INFO_LENGTH_MISMATCH

0xC0000004

The specified information record length does not match the length that is required for the specified information class.