[libvirt] [libvirt-sandbox PATCH] sandbox-builder: Don't try g_file_enumerator_next_file if enumerator is NULL

[Daniel P. Berrange]

On Sat, Mar 19, 2016 at 02:38:00PM +0100, Guido Günther wrote:
> Passing the NULL enumerator to g_file_enumerator_next_file makes
> us overwrite error information otherwise:
> 
>     $ sudo bin/virt-sandbox-service create --unitfile foo.service foo
>     (process:18529): GLib-GIO-CRITICAL **: g_file_enumerator_next_file: assertion 'G_IS_FILE_ENUMERATOR (enumerator)' failed
> 
>     (process:18529): GLib-GIO-CRITICAL **: g_file_enumerator_close: assertion 'G_IS_FILE_ENUMERATOR (enumerator)' failed
>     bin/virt-sandbox-service:318: Warning: GError set over the top of a previous GError or uninitialized memory.
>     This indicates a bug in someone's code. You must ensure an error is NULL before it's set.
>     The overwriting error message was: Error removing file: No such file or directory context.undefine()
>     bin/virt-sandbox-service:318: Warning: g_object_unref: assertion 'G_IS_OBJECT (object)' failed context.undefine()
>     Cleanup failed: g-io-error-quark: No such file or directory (1)
>     bin/virt-sandbox-service: g-io-error-quark: No such file or directory (1)
> 
> also make sure we don't unref NULL in this case.
> ---
>  libvirt-sandbox/libvirt-sandbox-builder.c | 37 +++++++++++++++++--------------
>  1 file changed, 20 insertions(+), 17 deletions(-)

ACK


Regards,
Daniel
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