MOUNTDEV_UNIQUE_ID structure (mountdev.h)
The MOUNTDEV_UNIQUE_ID structure contains a unique volume ID that a mount manager client provides to the mount manager in response to an IOCTL_MOUNTDEV_QUERY_UNIQUE_ID request.
Syntax
typedef struct _MOUNTDEV_UNIQUE_ID {
USHORT UniqueIdLength;
UCHAR UniqueId[1];
} MOUNTDEV_UNIQUE_ID, *PMOUNTDEV_UNIQUE_ID;
Members
UniqueIdLength
The length of the unique volume ID, in bytes.
UniqueId[1]
Array of bytes that specify the unique volume ID.
Remarks
For a discussion of unique volume IDs and how the mount manager uses them, see Supporting Mount Manager Requests in a Storage Class Driver.
As a best practice, the implementer must not thread synchronize and must not make blocking and/or Interprocess Communication (IPC) function calls.
Requirements
Requirement | Value |
---|---|
Header | mountdev.h (include Mountmgr.h) |