[Libguestfs] [collectd] collectd leaks SIGCHLD == SIG_IGN into plugins
Richard W.M. Jones
rjones at redhat.com
Tue Nov 13 11:25:06 UTC 2018
On Tue, Nov 13, 2018 at 12:07:23PM +0100, Florian Forster wrote:
> A quick glance shows that the exec plugin actually is clearing the signal mask:
The problem is the SIGCHLD handler being set to SIG_IGN, which is
different from the signal mask.
> Can you give some more context when this problem comes up? Ideally
> in a Github issue (hint, hint ;).
I'd like Peter to file a github issue because he knows the version
that he is using.
However in general terms a trivial plugin which just does:
if ((g = guestfs_create ()) == NULL || guestfs_launch (g) == -1)
should be sufficient to demonstrate the problem. (Work around it by
adding ‘signal (SIGCHLD, SIG_DFL);’ to the plugin code.)
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
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