BOOL StatusTape( DWORD *drive_status // O - Status of drive.
)
{
if( gb_Tape_Handle != NULL ){
GetTapeStatus( gb_Tape_Handle );
DisplayDriverError( GetLastError( ) ) ;
*drive_status = GetLastError( );
}
printf( "StatusTape(): status = %lx\n", *drive_status ) ;
return SUCCESS ;
}
static
DWORD w32_get_tape_status ( HANDLE hFile )
{
// ***************************************************************
// PROGRAMMING NOTE: it is THIS LOOP (retrieving the status
// of the tape drive) that takes UP TO *10* SECONDS TO COMPLETE
// if there is no tape mounted on the drive whereas it completes
// immediately when there IS a tape mounted! I have no idea why
// Windows behave so unusually/inefficiently in this way! - Fish
// ***************************************************************
DWORD dwTapeStatus;
// (NOTE: see also: KB 111837: "ERROR_BUS_RESET May Be Benign")
do dwTapeStatus = GetTapeStatus( hFile );
while (ERROR_BUS_RESET == dwTapeStatus);
return dwTapeStatus;
}
int win32_tape_device::tape_get(struct mtget *mt_get)
{
TAPE_POSITION_INFO pos_info;
BOOL result;
if (m_fd < 3 || m_fd >= (int)(NUMBER_HANDLE_ENTRIES + 3) ||
TapeHandleTable[m_fd - 3].OSHandle == INVALID_HANDLE_VALUE) {
errno = EBADF;
return -1;
}
PTAPE_HANDLE_INFO pHandleInfo = &TapeHandleTable[m_fd - 3];
if (GetTapePositionInfo(pHandleInfo->OSHandle, &pos_info) != NO_ERROR) {
return -1;
}
DWORD density = 0;
DWORD blocksize = 0;
result = GetDensityBlockSize(pHandleInfo->OSHandle, &density, &blocksize);
if (result != NO_ERROR) {
TAPE_GET_DRIVE_PARAMETERS drive_params;
DWORD size;
size = sizeof(drive_params);
result = GetTapeParameters(pHandleInfo->OSHandle, GET_TAPE_DRIVE_INFORMATION, &size, &drive_params);
if (result == NO_ERROR) {
blocksize = drive_params.DefaultBlockSize;
}
}
mt_get->mt_type = MT_ISSCSI2;
/*
* Partition #
*/
mt_get->mt_resid = pos_info.PartitionBlockValid ? pos_info.Partition : (ULONG)-1;
/*
* Density / Block Size
*/
mt_get->mt_dsreg = ((density << MT_ST_DENSITY_SHIFT) & MT_ST_DENSITY_MASK) |
((blocksize << MT_ST_BLKSIZE_SHIFT) & MT_ST_BLKSIZE_MASK);
mt_get->mt_gstat = 0x00010000; /* Immediate report mode.*/
if (pHandleInfo->bEOF) {
mt_get->mt_gstat |= 0x80000000; /* GMT_EOF */
}
if (pos_info.PartitionBlockValid && pos_info.BlockNumber == 0) {
mt_get->mt_gstat |= 0x40000000; /* GMT_BOT */
}
if (pHandleInfo->bEOT) {
mt_get->mt_gstat |= 0x20000000; /* GMT_EOT */
}
if (pHandleInfo->bEOD) {
mt_get->mt_gstat |= 0x08000000; /* GMT_EOD */
}
TAPE_GET_MEDIA_PARAMETERS media_params;
DWORD size = sizeof(media_params);
result = GetTapeParameters(pHandleInfo->OSHandle, GET_TAPE_MEDIA_INFORMATION, &size, &media_params);
if (result == NO_ERROR && media_params.WriteProtected) {
mt_get->mt_gstat |= 0x04000000; /* GMT_WR_PROT */
}
result = GetTapeStatus(pHandleInfo->OSHandle);
if (result != NO_ERROR) {
if (result == ERROR_NO_MEDIA_IN_DRIVE) {
mt_get->mt_gstat |= 0x00040000; /* GMT_DR_OPEN */
}
} else {
mt_get->mt_gstat |= 0x01000000; /* GMT_ONLINE */
}
/*
* Recovered Error Count
*/
mt_get->mt_erreg = 0;
/*
* File Number
*/
mt_get->mt_fileno = (__daddr_t)pHandleInfo->ulFile;
/*
* Block Number
*/
mt_get->mt_blkno = (__daddr_t)(pHandleInfo->bBlockValid ? pos_info.BlockNumber - pHandleInfo->ullFileStart : (ULONGLONG)-1);
return 0;
}
