On Mon, Aug 29, 2005 at 12:24:18PM -0500, Miller, Mike (OS Dev) wrote: > > > This is after my minimal sas transport class, please also > > read the thread about it on linux-scsi > > > In the referenced code for using sysfs, there only appear to be methods > for reading attributes. How about if we want to cause a command to > get written out to the hardware? Do we do something like this? > > /* get a semaphore keep everyone else out while we're working, > and hope like hell that all the other processes are playing > nice and using the semaphore too, or else we're hosed. */ > > get_some_kind_of_semaphore(); try flock() on the /sys/blah/blah/ directory. That should keep userspace happy. I think it only takes a small sysfs patch to make this work (or it might work today, don't remember, sorry...) Or look into using configfs instead. thanks, greg k-h - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
