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authorAlan Jenkins <alan-jenkins@tuffmail.co.uk>2009-06-16 14:54:04 +0100
committerJohn W. Linville <linville@tuxdriver.com>2009-06-19 11:50:18 -0400
commit464902e812025792c9e33e19e1555c343672d5cf (patch)
treecc243de464a7935291c52ac93d6bd0a24c6c08c5 /net/rfkill
parent96e9cfeb9692b0bc6e03f9b6f9cb3c67a40b76d1 (diff)
rfkill: export persistent attribute in sysfs
This information allows userspace to implement a hybrid policy where it can store the rfkill soft-blocked state in platform non-volatile storage if available, and if not then file-based storage can be used. Some users prefer platform non-volatile storage because of the behaviour when dual-booting multiple versions of Linux, or if the rfkill setting is changed in the BIOS setting screens, or if the BIOS responds to wireless-toggle hotkeys itself before the relevant platform driver has been loaded. Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/rfkill')
-rw-r--r--net/rfkill/core.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index dcf8df7c573c..79693fe2001e 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -610,6 +610,15 @@ static ssize_t rfkill_idx_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)
@@ -668,6 +677,7 @@ static struct device_attribute rfkill_dev_attrs[] = {
__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

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