Re: [linux-usb-devel] USB/hal: USB open() broken? (USB CD burnerunderruns, USB HDD hard resets)

[Bodo Eggert]

On Wed, 21 Jun 2006, Alan Cox wrote:
> Ar Mer, 2006-06-21 am 02:07 +0200, ysgrifennodd Bodo Eggert:

> > This does not work, since O_EXCL does not work:
> > http://lkml.org/lkml/2006/2/5/137
> 
> It works fine. Its an advisory exclusive locking scheme which is
> precisely what is needed and precisely how some vendors implement their
> solution.

This will be as effective as "/var/lock/please-don't-touch-the-burner",
and the lock is more portable ...

> There are good reasons for not having absolute locks, one of which is
> that you might want to force a reset or a hot unplug of an interface
> knowing you'll lose the CD its burning (eg because your flight is about
> to leave)

Killing cdrecord should take care of that lock.
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