Don't fail when it wasn't possible to fetch the interface name.

Open twasilczyk opened this issue 6 years ago • 2 comments

On some systems SIOCGIFNAME may fail with ENOTTY, but the actual slcanX interface gets properly configured. Instead of crashing hard on such case, let's gracefuly degrade and just not display the interface name.

This is the issue I mentioned in https://github.com/linux-can/can-utils/pull/118

Jan 15 '19 22:01 twasilczyk

On which systems do you see the ioctl() to fail?

Jan 16 '19 07:01 marckleinebudde

It's Android. I've built the kernel (4.4) by myself, so there is a chance I misconfigured something.

It's clearly a problem with my system, but it's hard to say if it's tied to Android P or my specific device. I'd appreciate help debugging this, but the patch with workaround has still some value, because any other Android developer may hit the issue at other time.

Jan 16 '19 15:01 twasilczyk