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author | florian@mickler.org <florian@mickler.org> | 2010-02-26 14:01:34 +0300 |
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committer | John W. Linville <linville@tuxdriver.com> | 2010-03-11 01:09:34 +0300 |
commit | 6c26361e4be3cf0dad7083e38ca52001a987e3e6 (patch) | |
tree | 4638fff76e14e4a8ab6de035a8e3ee47cb7bfae1 /net/rfkill | |
parent | 69c86373c6ea1149aa559e6088362d58d8ec8835 (diff) | |
download | linux-6c26361e4be3cf0dad7083e38ca52001a987e3e6.tar.xz |
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>
Diffstat (limited to 'net/rfkill')
-rw-r--r-- | net/rfkill/core.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/net/rfkill/core.c b/net/rfkill/core.c index c218e07e5caf..5f33151d70ae 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 }; |