Hi Wolfgang,

it's late, so I may have misread somecode, but don't you "update" the
iovec descriptors a user passes on send/recvmsg on return (namely
iovec_len)? I received some complaints about this /wrt to in-kernel CAN
stack usage.

I always considered the same well-know behaviour of RTnet a bug, but now
I found your code is doing this systematically, also for user space
callers. Is this behaviour undefined or even required according POSIX or


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