From: Marcel Holtmann > Hi David, > > >> So at present, in kernel part, we can only say the original authors > >> intended to do like this. And only within kernel part, it can not cause > >> issue. I guess, original authors originally knew what we talk about. > > > > I've just searched for hci_u*filter it is all horrid. > > Look at the code for get/set_sockopt of HCI_FILTER. > > Someone seems to have done a complete 'bodge job' of fixing the user interface > > for apps (32bit and 64bit) on 64bit kernels. > > we are actually fully aware of that. Just keep in mind that this code is from 2.4.6 kernel and with > that most likely 14 years old by now. Unfortunately it ended up as userspace API. AFAICT the userspace API is always __u32[2] the long[2] is never exposed to userspace (certainly not through the socket option code). Quite why all the casts were added - instead of changing the type is probably hidden in the annals of the source repo. Some serious archaeology might be in order. David -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
