On Wednesday 30 July 2014 14:28:22 Richard W.M. Jones wrote:
> This refactors existing code to close file descriptors in the recovery
> process, and also adds code to close file descriptors between the
> fork() and exec() of QEMU or User-Mode Linux.
> 
> The reason is to avoid leaking main process file descriptors where the
> main process (or other libraries in the main process) are not setting
> O_CLOEXEC at all or not setting it atomically.  Python is a
> particular culprit.
> 
> See also this OpenStack Nova bug report:
> https://bugs.launchpad.net/nova/+bug/1313477
> 
> Thanks: Qin Zhao for identifying and characterizing the problem in
> Nova.
> 
> This is version 2 of this commit.  This commit is identical to the
> reverted commit 115fcc34325f965ac3723683e4462fc667dcd254 except that
> we don't close stderr.

LGTM.

-- 
Pino Toscano

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