Messages in this thread | | | Date | Thu, 14 Aug 2008 22:24:53 -0400 | From | Dmitry Torokhov <> | Subject | Re: [PATCH/RFC] Resolve 2 year old issue with different demands on EVIOCGRAB |
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Hi Neil,
On Fri, Aug 15, 2008 at 12:02:09PM +1000, Neil Brown wrote: > > I'll let the comments in the patch below to most of the talking. > This came up because I wanted to use EVIOCGRAB in some code on an > Openmoko Freerunner, and found that EVIOCGRAG does different things on > that kernel to elsewhere. I looked into why, and found that there was > a good reason but that the issues hadn't been completely resolved. I > hope to help resolve the issues so that EVIOCGRAB can behave the same > everywhere, and still meet everybody's needs. > > I would have Cc:ed to Magnus Vigerlof who wrote the original patch on > which this is based, but his Email address doesn't appear in lkml.org. >
I don't think this is a viable solution - there are other "good" handlers beisdes evdev, such as rfkill-input, which will still get disabled by the "lightweight" grabs.
Overall I think it is application's responsibility to not use multiplexing devices if they use evdev, bit I can consider adding a new interface (maybe another ioctl) that would disable event delivery though certain interfaces for a device.
-- Dmitry
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