#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/rfkill.h>
+#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/miscdevice.h>
#include <linux/wait.h>
u32 idx;
bool registered;
- bool suspended;
bool persistent;
const struct rfkill_ops *ops;
static void rfkill_event(struct rfkill *rfkill)
{
- if (!rfkill->registered || rfkill->suspended)
+ if (!rfkill->registered)
return;
kobject_uevent(&rfkill->dev.kobj, KOBJ_CHANGE);
unsigned long flags;
int err;
+ if (unlikely(rfkill->dev.power.power_state.event & PM_EVENT_SLEEP))
+ return;
+
/*
* Some platforms (...!) generate input events which affect the
* _hard_ kill state -- whenever something tries to change the
rfkill->state |= RFKILL_BLOCK_SW_SETCALL;
spin_unlock_irqrestore(&rfkill->lock, flags);
- if (unlikely(rfkill->dev.power.power_state.event & PM_EVENT_SLEEP))
- return;
-
err = rfkill->ops->set_block(rfkill->data, blocked);
spin_lock_irqsave(&rfkill->lock, flags);
blocked = blocked || hwblock;
spin_unlock_irqrestore(&rfkill->lock, flags);
- if (!rfkill->registered) {
- rfkill->persistent = true;
- } else {
- if (prev != blocked && !hwblock)
- schedule_work(&rfkill->uevent_work);
+ if (!rfkill->registered)
+ return blocked;
- rfkill_led_trigger_event(rfkill);
- }
+ if (prev != blocked && !hwblock)
+ schedule_work(&rfkill->uevent_work);
+
+ rfkill_led_trigger_event(rfkill);
return blocked;
}
EXPORT_SYMBOL(rfkill_set_sw_state);
+void rfkill_init_sw_state(struct rfkill *rfkill, bool blocked)
+{
+ unsigned long flags;
+
+ BUG_ON(!rfkill);
+ BUG_ON(rfkill->registered);
+
+ spin_lock_irqsave(&rfkill->lock, flags);
+ __rfkill_set_sw_state(rfkill, blocked);
+ rfkill->persistent = true;
+ spin_unlock_irqrestore(&rfkill->lock, flags);
+}
+EXPORT_SYMBOL(rfkill_init_sw_state);
+
void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw)
{
unsigned long flags;
swprev = !!(rfkill->state & RFKILL_BLOCK_SW);
hwprev = !!(rfkill->state & RFKILL_BLOCK_HW);
__rfkill_set_sw_state(rfkill, sw);
+ if (hw)
+ rfkill->state |= RFKILL_BLOCK_HW;
+ else
+ rfkill->state &= ~RFKILL_BLOCK_HW;
spin_unlock_irqrestore(&rfkill->lock, flags);
static const char *rfkill_get_type_str(enum rfkill_type type)
{
+ BUILD_BUG_ON(NUM_RFKILL_TYPES != RFKILL_TYPE_FM + 1);
+
switch (type) {
case RFKILL_TYPE_WLAN:
return "wlan";
return "wimax";
case RFKILL_TYPE_WWAN:
return "wwan";
+ case RFKILL_TYPE_GPS:
+ return "gps";
+ case RFKILL_TYPE_FM:
+ return "fm";
default:
BUG();
}
-
- BUILD_BUG_ON(NUM_RFKILL_TYPES != RFKILL_TYPE_WWAN + 1);
}
static ssize_t rfkill_type_show(struct device *dev,
return sprintf(buf, "%d\n", rfkill->idx);
}
+static ssize_t rfkill_persistent_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct rfkill *rfkill = to_rfkill(dev);
+
+ return sprintf(buf, "%d\n", rfkill->persistent);
+}
+
static u8 user_state_from_blocked(unsigned long state)
{
if (state & RFKILL_BLOCK_HW)
struct device_attribute *attr,
const char *buf, size_t count)
{
- /*
- * The intention was that userspace can only take control over
- * a given device when/if rfkill-input doesn't control it due
- * to user_claim. Since user_claim is currently unsupported,
- * we never support changing the state from userspace -- this
- * can be implemented again later.
- */
+ 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;
- return -EPERM;
+ if (state != RFKILL_USER_STATE_SOFT_BLOCKED &&
+ state != RFKILL_USER_STATE_UNBLOCKED)
+ return -EINVAL;
+
+ mutex_lock(&rfkill_global_mutex);
+ rfkill_set_block(rfkill, state == RFKILL_USER_STATE_SOFT_BLOCKED);
+ mutex_unlock(&rfkill_global_mutex);
+
+ return err ?: count;
}
static ssize_t rfkill_claim_show(struct device *dev,
__ATTR(name, S_IRUGO, rfkill_name_show, NULL),
__ATTR(type, S_IRUGO, rfkill_type_show, NULL),
__ATTR(index, S_IRUGO, rfkill_idx_show, NULL),
+ __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_NULL
rfkill_pause_polling(rfkill);
- rfkill->suspended = true;
-
return 0;
}
struct rfkill *rfkill = to_rfkill(dev);
bool cur;
- mutex_lock(&rfkill_global_mutex);
- cur = rfkill_global_states[rfkill->type].cur;
- rfkill_set_block(rfkill, cur);
- mutex_unlock(&rfkill_global_mutex);
-
- rfkill->suspended = false;
-
- schedule_work(&rfkill->uevent_work);
+ if (!rfkill->persistent) {
+ cur = !!(rfkill->state & RFKILL_BLOCK_SW);
+ rfkill_set_block(rfkill, cur);
+ }
rfkill_resume_polling(rfkill);
struct rfkill_event ev;
/* we don't need the 'hard' variable but accept it */
- if (count < sizeof(ev) - 1)
+ if (count < RFKILL_EVENT_SIZE_V1 - 1)
return -EINVAL;
- if (copy_from_user(&ev, buf, sizeof(ev) - 1))
+ /*
+ * Copy as much data as we can accept into our 'ev' buffer,
+ * but tell userspace how much we've copied so it can determine
+ * our API version even in a write() call, if it cares.
+ */
+ count = min(count, sizeof(ev));
+ if (copy_from_user(&ev, buf, count))
return -EFAULT;
if (ev.op != RFKILL_OP_CHANGE && ev.op != RFKILL_OP_CHANGE_ALL)
#endif
static const struct file_operations rfkill_fops = {
+ .owner = THIS_MODULE,
.open = rfkill_fop_open,
.read = rfkill_fop_read,
.write = rfkill_fop_write,