static float
identify_partition(int fd, partition_data *partition, void **cookie)
{
DEBUG_INIT_ETC(NULL, ("fd: %d, id: %ld, offset: %Ld, "
"size: %Ld, block_size: %ld, flags: 0x%lx", fd,
partition->id, partition->offset, partition->size,
partition->block_size, partition->flags));
device_geometry geometry;
float result = -1;
if ((partition->flags & B_PARTITION_IS_DEVICE) != 0
&& partition->block_size == 2048
&& ioctl(fd, B_GET_GEOMETRY, &geometry) == 0
&& geometry.device_type == B_CD) {
Disc *disc = new(std::nothrow) Disc(fd);
if (disc != NULL && disc->InitCheck() == B_OK) {
// If we have only a single session then we can let the file system
// drivers play directly with the device.
Session *session = disc->GetSession(1);
if (session != NULL) {
result = 0.9f;
delete session;
} else
result = 0.1f;
*cookie = static_cast<void*>(disc);
} else
delete disc;
}
PRINT(("returning %g\n", result));
return result;
}
