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SubjectRe: [PATCH 5/7] FUSE: implement ioctl support
> Well, it's only 240 lines with good amount of comments and iovec copying
> function. The ioctl itself isn't too complex. I'm a bit skeptical
> about direct access. It can easily introduce security vulnerabilities
> as there really is no way to hold a pid.

Agreed entirely. If and only if there is a future problem with
performance someone can introduce a method for the client to pre-describe
certain ioctls in terms of number/length/read/write.


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