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authorflorian@mickler.org <florian@mickler.org>2010-02-26 12:01:34 +0100
committerJohn W. Linville <linville@tuxdriver.com>2010-03-10 17:09:34 -0500
commit6c26361e4be3cf0dad7083e38ca52001a987e3e6 (patch)
tree4638fff76e14e4a8ab6de035a8e3ee47cb7bfae1
parent69c86373c6ea1149aa559e6088362d58d8ec8835 (diff)
downloadvexpress-lsk-6c26361e4be3cf0dad7083e38ca52001a987e3e6.tar.gz
enhance sysfs rfkill interface
This commit introduces two new sysfs knobs. /sys/class/rfkill/rfkill[0-9]+/blocked_hw: (ro) hardblock kill state /sys/class/rfkill/rfkill[0-9]+/blocked_sw: (rw) softblock kill state Signed-off-by: Florian Mickler <florian@mickler.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--Documentation/ABI/stable/sysfs-class-rfkill25
-rw-r--r--net/rfkill/core.c58
2 files changed, 83 insertions, 0 deletions
diff --git a/Documentation/ABI/stable/sysfs-class-rfkill b/Documentation/ABI/stable/sysfs-class-rfkill
index 97d5064f4f8..b91c3f37453 100644
--- a/Documentation/ABI/stable/sysfs-class-rfkill
+++ b/Documentation/ABI/stable/sysfs-class-rfkill
@@ -40,3 +40,28 @@ Description: Whether the soft blocked state is initialised from non-volatile
Values: A numeric value.
0: false
1: true
+
+
+What: /sys/class/rfkill/rfkill[0-9]+/blocked_hw
+Date: 23-Feb-2010
+KernelVersion v2.6.34
+Contact: linux-wireless@vger.kernel.org
+Description: Current hardblock state. This file is read only.
+Values: A numeric value.
+ 0: inactive
+ The transmitter is (potentially) active.
+ 1: active
+ The transmitter is forced off by something outside of
+ the driver's control.
+
+
+What: /sys/class/rfkill/rfkill[0-9]+/blocked_sw
+Date: 23-Feb-2010
+KernelVersion v2.6.34
+Contact: linux-wireless@vger.kernel.org
+Description: Current softblock state. This file is read and write.
+Values: A numeric value.
+ 0: inactive
+ The transmitter is (potentially) active.
+ 1: active
+ The transmitter is turned off by software.
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index c218e07e5ca..5f33151d70a 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -628,6 +628,61 @@ static ssize_t rfkill_persistent_show(struct device *dev,
return sprintf(buf, "%d\n", rfkill->persistent);
}
+static ssize_t rfkill_blocked_hw_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct rfkill *rfkill = to_rfkill(dev);
+ unsigned long flags;
+ u32 state;
+
+ spin_lock_irqsave(&rfkill->lock, flags);
+ state = rfkill->state;
+ spin_unlock_irqrestore(&rfkill->lock, flags);
+
+ return sprintf(buf, "%d\n", (state & RFKILL_BLOCK_HW) ? 1 : 0 );
+}
+
+static ssize_t rfkill_blocked_sw_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct rfkill *rfkill = to_rfkill(dev);
+ unsigned long flags;
+ u32 state;
+
+ spin_lock_irqsave(&rfkill->lock, flags);
+ state = rfkill->state;
+ spin_unlock_irqrestore(&rfkill->lock, flags);
+
+ return sprintf(buf, "%d\n", (state & RFKILL_BLOCK_SW) ? 1 : 0 );
+}
+
+static ssize_t rfkill_blocked_sw_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct rfkill *rfkill = to_rfkill(dev);
+ unsigned long state;
+ int err;
+
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ err = strict_strtoul(buf, 0, &state);
+ if (err)
+ return err;
+
+ if (state > 1 )
+ return -EINVAL;
+
+ mutex_lock(&rfkill_global_mutex);
+ rfkill_set_block(rfkill, state);
+ mutex_unlock(&rfkill_global_mutex);
+
+ return err ?: count;
+}
+
static u8 user_state_from_blocked(unsigned long state)
{
if (state & RFKILL_BLOCK_HW)
@@ -700,6 +755,9 @@ static struct device_attribute rfkill_dev_attrs[] = {
__ATTR(persistent, S_IRUGO, rfkill_persistent_show, NULL),
__ATTR(state, S_IRUGO|S_IWUSR, rfkill_state_show, rfkill_state_store),
__ATTR(claim, S_IRUGO|S_IWUSR, rfkill_claim_show, rfkill_claim_store),
+ __ATTR(sw, S_IRUGO|S_IWUSR, rfkill_blocked_sw_show,
+ rfkill_blocked_sw_store),
+ __ATTR(hw, S_IRUGO, rfkill_blocked_hw_show, NULL),
__ATTR_NULL
};