Return-path: Received: from out3.smtp.messagingengine.com ([66.111.4.27]:37493 "EHLO out3.smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753558AbYFVPi7 (ORCPT ); Sun, 22 Jun 2008 11:38:59 -0400 From: Henrique de Moraes Holschuh To: John Linville Cc: linux-wireless@vger.kernel.org, Ivo van Doorn , Matthew Garrett , Dan Williams , Thomas Renninger , Henrique de Moraes Holschuh , Dmitry Torokhov Subject: [PATCH 10/12] rfkill: add uevent notifications Date: Sun, 22 Jun 2008 12:38:46 -0300 Message-Id: <1214149128-5913-11-git-send-email-hmh@hmh.eng.br> (sfid-20080622_173913_730535_B1D62FAB) In-Reply-To: <1214149128-5913-1-git-send-email-hmh@hmh.eng.br> References: <1214149128-5913-1-git-send-email-hmh@hmh.eng.br> Sender: linux-wireless-owner@vger.kernel.org List-ID: Use the notification chains to also send uevents, so that userspace can be notified of state changes of every rfkill switch. Userspace should use these events for OSD/status report applications and rfkill GUI frontends. HAL might want to broadcast them over DBUS, for example. It might be also useful for userspace implementations of rfkill-input, or to use HAL as the platform driver which promotes rfkill switch change events into input events (to synchronize all other switches) when necessary for platforms that lack a convenient platform-specific kernel module to do it. Signed-off-by: Henrique de Moraes Holschuh Acked-by: Ivo van Doorn Cc: Dmitry Torokhov --- net/rfkill/rfkill.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 42 insertions(+), 0 deletions(-) diff --git a/net/rfkill/rfkill.c b/net/rfkill/rfkill.c index 3c77734..dd1c3f1 100644 --- a/net/rfkill/rfkill.c +++ b/net/rfkill/rfkill.c @@ -386,12 +386,51 @@ static int rfkill_resume(struct device *dev) #define rfkill_resume NULL #endif +static int rfkill_blocking_uevent_notifier(struct notifier_block *nb, + unsigned long eventid, + void *data) +{ + struct rfkill *rfkill = (struct rfkill *)data; + + switch (eventid) { + case RFKILL_STATE_CHANGED: + kobject_uevent(&rfkill->dev.kobj, KOBJ_CHANGE); + break; + default: + break; + } + + return NOTIFY_DONE; +} + +static struct notifier_block rfkill_blocking_uevent_nb = { + .notifier_call = rfkill_blocking_uevent_notifier, + .priority = 0, +}; + +static int rfkill_dev_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + struct rfkill *rfkill = to_rfkill(dev); + int error; + + error = add_uevent_var(env, "RFKILL_NAME=%s", rfkill->name); + if (error) + return error; + error = add_uevent_var(env, "RFKILL_TYPE=%s", + rfkill_get_type_str(rfkill->type)); + if (error) + return error; + error = add_uevent_var(env, "RFKILL_STATE=%d", rfkill->state); + return error; +} + static struct class rfkill_class = { .name = "rfkill", .dev_release = rfkill_release, .dev_attrs = rfkill_dev_attrs, .suspend = rfkill_suspend, .resume = rfkill_resume, + .dev_uevent = rfkill_dev_uevent, }; static int rfkill_add_switch(struct rfkill *rfkill) @@ -566,11 +605,14 @@ static int __init rfkill_init(void) return error; } + register_rfkill_notifier(&rfkill_blocking_uevent_nb); + return 0; } static void __exit rfkill_exit(void) { + unregister_rfkill_notifier(&rfkill_blocking_uevent_nb); class_unregister(&rfkill_class); } -- 1.5.5.4