UserReportMediumBlockSize
Provides a report on the external device’s block size.
Declaration
virtual kern_return_t UserReportMediumBlockSize(UInt64 *blockSize);Parameters
- blockSize:
On return, the external device’s block size.
Return Value
A value that indicates the result of the report request. kIOReturnSuccess indicates success. For error definitions, see IOKit Constants.
Discussion
This call populates blockSize with the granularity of the block size, such as 512 bytes or 4096 bytes (4 KB).