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Re: [libvirt] [Qemu-devel] [PATCH v4] Add support for fd: protocol



I'm still totally against this.  FD passing is a nice feature for sandboxing,
but the passing should be between closely cooperating programs.  We'll
need a tool shipped from the qemu source tree to open and set up the
FDs, and not someone external.  With that setup in place we can use
a protocol similar to the various OpenBSD privilegue separated deaemons
to also allow reopening / snapshots / etc.

Opening fds in libvirt and passing them into qemu is exactly the wrong way,
and just cements the current horrors where libvirt duplicates parsing
of image format headers.


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