On 5/28/09, Johannes Berg <johannes@xxxxxxxxxxxxxxxx> wrote: > The new code added by this patch will make rfkill create > a misc character device /dev/rfkill that userspace can use > to control rfkill soft blocks and get status of devices as > well as events when the status changes. > > Using it is very simple -- when you open it you can read > a number of times to get the initial state, and every > further read blocks (you can poll) on getting the next > event from the kernel. The same structure you read is > also used when writing to it to change the soft block of > a given device, all devices of a given type, or all > devices. > > This also makes CONFIG_RFKILL_INPUT selectable again in > order to be able to test without it present since its > functionality can now be replaced by userspace entirely > and distros and users may not want the input part of > rfkill interfering with their userspace code. We will > also write a userspace daemon to handle all that and > consequently add the input code to the feature removal > schedule. > > Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> If I read correctly, userspace can write to the global states, but can't read them? I think it's awkward to implement rfkill-input in userspace without being able to read the global states. The daemon would have to save the states in a file, in case it is restarted. Thanks Alan -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
