enhance sysfs rfkill interface (6c26361e) · Commits · e / devices / android_kernel_fairphone_FP3

Documentation/ABI/stable/sysfs-class-rfkill

+25 −0

Original line number	Original line	Diff line number	Diff line
	@@ -40,3 +40,28 @@ Description: Whether the soft blocked state is initialised from non-volatile
	Values: A numeric value.		Values: A numeric value.
	0: false		0: false
	1: true		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.

net/rfkill/core.c

+58 −0

Original line number	Original line	Diff line number	Diff line
	@@ -628,6 +628,61 @@ static ssize_t rfkill_persistent_show(struct device *dev,
	return sprintf(buf, "%d\n", rfkill->persistent);		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)		static u8 user_state_from_blocked(unsigned long state)
	{		{
	if (state & RFKILL_BLOCK_HW)		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(persistent, S_IRUGO, rfkill_persistent_show, NULL),
	__ATTR(state, S_IRUGO\|S_IWUSR, rfkill_state_show, rfkill_state_store),		__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(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		__ATTR_NULL
	};		};