Il 01/03/2013 01:36, Eric Blake ha scritto: > For fd passing to work, we have to use qemu_open() instead of raw > open(). Is there any way to enforce that all files being opened by qemu > go through the appropriate qemu_open() wrapper? > > Meanwhile, we have a quandary on the libvirt side of things: qemu 1.4 > supports fd passing in general, but does not support it for rng. I > guess the same is true for -blockdev - we don't (yet) have a way to do > fd passing for backing files. Do we need some sort of QMP command that > will let libvirt query for a particular device whether that device is > known to support fd passing, so that libvirt can use fd passing for all > supported devices, while falling back to older direct open()s, and to > know which instance of qemu can safely have open() blocked at the > SELinux or syscall blacklist level?
Let's change open to qemu_open for 1.4.1, and declare rng only supported in 1.4.1... Paolo