The GetTapePosition function retrieves the current address of the tape, in logical or absolute blocks.
DWORD GetTapePosition(
HANDLE hDevice, |
// handle of open device |
DWORD dwPositionType, |
// type of address to obtain |
LPDWORD lpdwPartition, |
// address of current tape partition |
LPDWORD lpdwOffsetLow, |
// address of low-order 32 bits of tape position |
LPDWORD lpdwOffsetHigh |
// address of high-order 32 bits of tape position |
); |
Value |
Description |
TAPE_ABSOLUTE_POSITION |
The lpdwOffsetLow and lpdwOffsetHigh parameters receive the device-specific block address. The dwPartition parameter receives zero. |
TAPE_LOGICAL_POSITION |
The lpdwOffsetLow and lpdwOffsetHigh parameters receive the logical block address. The dwPartition parameter receives the logical tape partition. |
If the function succeeds, the return value is NO_ERROR.
If the function fails, the return value is one of the following error codes:
Error code |
Description |
ERROR_BEGINNING_OF_MEDIA |
An attempt to access data before the beginning-of-medium marker failed. |
ERROR_BUS_RESET |
A reset condition was detected on the bus. |
ERROR_END_OF_MEDIA |
The end-of-tape marker was reached during an operation. |
ERROR_FILEMARK_DETECTED |
A filemark was reached during an operation. |
ERROR_SETMARK_DETECTED |
A setmark was reached during an operation. |
ERROR_NO_DATA_DETECTED |
The end-of-data marker was reached during an operation. |
ERROR_PARTITION_FAILURE |
The tape could not be partitioned. |
ERROR_INVALID_BLOCK_LENGTH |
The block size is incorrect on a new tape in a multivolume partition. |
ERROR_DEVICE_NOT_PARTITIONED |
The partition information could not be found when a tape was being loaded. |
ERROR_MEDIA_CHANGED |
The tape that was in the drive has been replaced or removed. |
ERROR_NO_MEDIA_IN_DRIVE |
There is no media in the drive. |
ERROR_NOT_SUPPORTED |
The tape driver does not support a requested function. |
ERROR_UNABLE_TO_LOCK_MEDIA |
An attempt to lock the ejection mechanism failed. |
ERROR_UNABLE_TO_UNLOAD_MEDIA |
An attempt to unload the tape failed. |
ERROR_WRITE_PROTECT |
The media is write protected. |
A logical block address is relative to a partition. The first logical block address on each partition is zero.
Call the GetTapeParameters function to obtain information about the status, capabilities, and capacities of tape drives and media.
CreateFile, GetTapeParameters, SetTapePosition
file: /Techref/os/win/api/win32/func/src/f40_13.htm, 7KB, , updated: 2000/4/7 11:19, local time: 2024/11/7 04:34,
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