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2.5.6 FileFsObjectIdInformation

This information class is used to query or set the object ID for a file system data element. The operation MUST fail if the file system does not support object IDs.<145>

A FILE_FS_OBJECTID_INFORMATION data element, defined as follows, is returned by the server or provided by the client.


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ObjectId

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ExtendedInfo

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(ExtendedInfo cont'd for 4 rows)

ObjectId (16 bytes): A 16-byte GUID that identifies the file system volume on the disk. This value is not required to be unique on the system.

ExtendedInfo (48 bytes): A 48-byte value containing extended information on the file system volume. If no extended information has been written for this file system volume, the server MUST return 48 bytes of 0x00 in this field.<146>

This operation returns a status code, as specified in [MS-ERREF] section 2.3. The status code returned directly by the function that processes this file information class MUST be STATUS_SUCCESS or one of the following.

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.

STATUS_VOLUME_NOT_UPGRADED

0xC000029C

The file system on the volume does not support object IDs.

STATUS_INVALID_PARAMETER

0xC000000D

The file system does not implement object IDs.

 
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