FindPartitionByMountPoint
status_t FindPartitionByMountPoint(const char* mountPoint,
if (fDDRoster.FindPartitionByMountPoint(BOOT_PATH, &bootDevice, &bootPartition) == B_OK
status = roster.FindPartitionByMountPoint(path, &device, &partition);
status = roster.FindPartitionByMountPoint(argv[1], &device,
BDiskDeviceRoster().FindPartitionByMountPoint(mountPoint.Path(),