static void delete_device( struct device *device )
{
struct ioctl_call *ioctl, *next;
if (!device->manager) return; /* already deleted */
/* terminate all pending requests */
LIST_FOR_EACH_ENTRY_SAFE( ioctl, next, &device->requests, struct ioctl_call, dev_entry )
{
list_remove( &ioctl->mgr_entry );
set_ioctl_result( ioctl, STATUS_FILE_DELETED, NULL, 0 );
}
unlink_named_object( &device->obj );
list_remove( &device->entry );
device->manager = NULL;
}
status_t
FileDevice::Control(void* _cookie, int32 op, void* buffer, size_t length)
{
Cookie* cookie = (Cookie*)_cookie;
switch (op) {
case B_GET_DEVICE_SIZE:
return set_ioctl_result(
fFileSize > ~(size_t)0 ? ~(size_t)0 : (size_t)fFileSize,
buffer, length);
case B_SET_BLOCKING_IO:
case B_SET_NONBLOCKING_IO:
// TODO: Translate to O_NONBLOCK and pass on!
return B_OK;
case B_GET_READ_STATUS:
case B_GET_WRITE_STATUS:
// TODO: poll() the FD!
return set_ioctl_result(true, buffer, length);
case B_GET_ICON:
return B_UNSUPPORTED;
case B_GET_GEOMETRY:
case B_GET_BIOS_GEOMETRY:
{
// fill in the geometry
// Optimally we have only 1 block per sector and only one head.
// Since we have only a uint32 for the cylinder count, this won't
// work for files > 2TB. So, we set the head count to the minimally
// possible value.
off_t blocks = fFileSize / kBlockSize;
uint32 heads = (blocks + 0xfffffffe) / 0xffffffff;
if (heads == 0)
heads = 1;
device_geometry geometry;
geometry.bytes_per_sector = kBlockSize;
geometry.sectors_per_track = 1;
geometry.cylinder_count = blocks / heads;
geometry.head_count = heads;
geometry.device_type = B_DISK;
geometry.removable = false;
geometry.read_only = false;
geometry.write_once = false;
return set_ioctl_result(geometry, buffer, length);
}
case B_GET_MEDIA_STATUS:
return set_ioctl_result((status_t)B_OK, buffer, length);
case B_SET_INTERRUPTABLE_IO:
case B_SET_UNINTERRUPTABLE_IO:
return B_OK;
case B_FLUSH_DRIVE_CACHE:
return fsync(cookie->fd) == 0 ? B_OK : errno;
case B_GET_BIOS_DRIVE_ID:
return set_ioctl_result((uint8)0xf8, buffer, length);
case B_GET_DRIVER_FOR_DEVICE:
case B_SET_DEVICE_SIZE:
case B_SET_PARTITION:
case B_FORMAT_DEVICE:
case B_EJECT_DEVICE:
case B_LOAD_MEDIA:
case B_GET_NEXT_OPEN_DEVICE:
default:
return B_BAD_VALUE;
}
return B_OK;
}
