Messages in this thread | | | Date | Thu, 28 Aug 2008 11:20:51 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 5/7] FUSE: implement ioctl support |
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Tejun Heo wrote: > ioctl support is tricky to implement because only the ioctl > implementation itself knows which memory regions need to be read > and/or written. To support this, fuse client can request retry of > ioctl specifying memory regions to read and write. Deep copying > (nested pointers) can be implemented by retrying multiple times > resolving one depth of dereference at a time.
Okay, I'm going to say it... wouldn't it be better to have some kind of data structure description language which the userspace can register with the kernel to linearize the data on a per-ioctl basis (kind of like rpcgen)?
-hpa
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