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[Bluetooth] Add address and channel attribute to RFCOMM TTY device

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Export the remote device address and channel of RFCOMM TTY device
via sysfs attributes. This allows udev to create better naming rules
for configured RFCOMM devices.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Marcel Holtmann 2007-10-20 14:52:38 +02:00 committed by David S. Miller
parent 6792b5ec8d
commit dae6a0f663
1 changed files with 25 additions and 0 deletions
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25
net/bluetooth/rfcomm/tty.c
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@ -189,6 +189,23 @@ static struct device *rfcomm_get_device(struct rfcomm_dev *dev)
return conn ? &conn->dev : NULL; return conn ? &conn->dev : NULL;
} }
static ssize_t show_address(struct device *tty_dev, struct device_attribute *attr, char *buf)
{
struct rfcomm_dev *dev = dev_get_drvdata(tty_dev);
bdaddr_t bdaddr;
baswap(&bdaddr, &dev->dst);
return sprintf(buf, "%s\n", batostr(&bdaddr));
}
static ssize_t show_channel(struct device *tty_dev, struct device_attribute *attr, char *buf)
{
struct rfcomm_dev *dev = dev_get_drvdata(tty_dev);
return sprintf(buf, "%d\n", dev->channel);
}
static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
static DEVICE_ATTR(channel, S_IRUGO, show_channel, NULL);
static int rfcomm_dev_add(struct rfcomm_dev_req *req, struct rfcomm_dlc *dlc) static int rfcomm_dev_add(struct rfcomm_dev_req *req, struct rfcomm_dlc *dlc)
{ {
struct rfcomm_dev *dev; struct rfcomm_dev *dev;
@ -281,6 +298,14 @@ out:
return err; return err;
} }
dev_set_drvdata(dev->tty_dev, dev);
if (device_create_file(dev->tty_dev, &dev_attr_address) < 0)
BT_ERR("Failed to create address attribute");
if (device_create_file(dev->tty_dev, &dev_attr_channel) < 0)
BT_ERR("Failed to create channel attribute");
return dev->id; return dev->id;
} }