[libvirt] [PATCH] virsh-nodedev: Avoid spurious errors
Eric Blake
eblake at redhat.com
Mon Jun 2 15:12:39 UTC 2014
On 06/02/2014 08:52 AM, Michal Privoznik wrote:
> Our public free functions explicitly don't accept NULL pointers
> (sigh). Therefore, callers must do something like this:
>
> if (dev)
> virNodeDeviceFree(dev);
Back-compat stinks - changing an error into silent success may break
older code that was relying on the error, so I'm not brave enough to
change the public API.
I wonder if it would be appropriate to annotate our public API with
non-NULL markers, so that at least the compiler could warn on calls to
the API with a NULL pointer.
>
> And we are not doing that on two places I've found. This leads to
> dummy error message thrown by virsh:
>
> virsh # nodedev-dumpxml nonexistent-device
> error: Could not find matching device 'nonexistent-device'
> error: invalid node device pointer in virNodeDeviceFree
>
> Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
> ---
> tools/virsh-nodedev.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
At any rate, whether or not we choose to make further changes to
libvirt.h, your patch is stand-alone correct. ACK.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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