Re: [Qemu-devel] [PATCH v2 2/1] libqtest: add more exit status checks

[Eric Blake]

On 05/24/2018 10:52 AM, Eric Blake wrote:

> Also, since waitpid() can only return either s->qemu_pid or -1 as we 
> aren't using WNOHANG, it may also be worth asserting that if pid == -1, 
> we either have EAGAIN (but why aren't we looping in that case?) or ECHILD.

I meant EINTR, not EAGAIN.  But in general, using waitpid() to collect 
process status without doing it in a loop is risky.

--
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org