Re: patch: acpi usermode suspend API change

Andriy Gapon wrote:
on 22/06/2007 02:33 Ariff Abdullah said the following:
Same issue with sound devices as well, but I've managed to solve it by
implementing own clone manager which require tiny hook into open() and
close() along with garbage collector and ability to handle various
abusive behaviour (while : ; ls /dev/xxx ; done, etc). See
sys/dev/sound/clone.* . It should be generic enough.

Maybe I'll say something stupid - I haven't looked at any code nor I
have any patches of my own, but wouldn't it be possible to manage cloned
devices similarly to how file descriptors are managed ? That is, don't
leave unused devices behind, re-use lowest available device id, etc.
I think that this would be a right thing.

There are still resource exhaustion issues with that simple approach.
Since each copy of my device is single-open, I can refuse the 2nd and
future processes that try to open the same device.

--
Nate
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