[virt-tools-list] [PATCH 0/3] virt-viewer: add SIGINT handler

[Francesco Giudici]

On 12/11/19 15:40, Daniel P. Berrangé wrote:
> On Tue, Nov 12, 2019 at 12:29:09PM +0100, Francesco Giudici wrote:
>> When remote-viewer or virt-viewer are terminated by a signal, they quit
>> without explicitly releasing resources. A bug[1] has been filed against
>> virt-viewer for not releasing redirected usb devices when it's terminated
>> by CTRL-C. Clearly this could be solved by adding a signal handler doing
>> proper shutdown of the application.
> 
> All resources used by a process are automatically released by the
> kernel when the process exits.
> 
> IOW, doing a "graceful exit" to manually release USB devices should
> not be required, not least because we want everything to behave
> well even in the face of an abnormal application crash where we have
> no way to manually releasing devices.
> 
> Can you explain what is preventing the USN device release from the
> kernel POV ?

Honestly, no... not yet. I'll investigate it.
Thank you for the quick feedback!

Francesco

> 
> 
> Regards,
> Daniel
>