Commit 930e1336 authored by Johan Hedberg's avatar Johan Hedberg Committed by Gustavo Padovan
Browse files

Bluetooth: Implement debugfs support for listing UUIDs 



This patch adds a debugfs entry to list the UUIDs that have been
registered through the management interface.

Signed-off-by: default avatarJohan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: default avatarGustavo F. Padovan <padovan@profusion.mobi>
parent 2aeb9a1a

net/bluetooth/hci_sysfs.c

+52 −0
Original line number Diff line number Diff line
@@ -461,6 +461,56 @@ static const struct file_operations blacklist_fops = { 
	.llseek		= seq_lseek,

	.release	= single_release,

};



static void print_bt_uuid(struct seq_file *f, u8 *uuid)

{

	u32 data0, data4;

	u16 data1, data2, data3, data5;



	memcpy(&data0, &uuid[0], 4);

	memcpy(&data1, &uuid[4], 2);

	memcpy(&data2, &uuid[6], 2);

	memcpy(&data3, &uuid[8], 2);

	memcpy(&data4, &uuid[10], 4);

	memcpy(&data5, &uuid[14], 2);



	seq_printf(f, "%.8x-%.4x-%.4x-%.4x-%.8x%.4x\n",

				ntohl(data0), ntohs(data1), ntohs(data2),

				ntohs(data3), ntohl(data4), ntohs(data5));

}



static int uuids_show(struct seq_file *f, void *p)

{

	struct hci_dev *hdev = f->private;

	struct list_head *l;



	hci_dev_lock_bh(hdev);



	list_for_each(l, &hdev->uuids) {

		struct bt_uuid *uuid;



		uuid = list_entry(l, struct bt_uuid, list);



		print_bt_uuid(f, uuid->uuid);

	}



	hci_dev_unlock_bh(hdev);



	return 0;

}



static int uuids_open(struct inode *inode, struct file *file)

{

	return single_open(file, uuids_show, inode->i_private);

}



static const struct file_operations uuids_fops = {

	.open		= uuids_open,

	.read		= seq_read,

	.llseek		= seq_lseek,

	.release	= single_release,

};



int hci_register_sysfs(struct hci_dev *hdev)

{

	struct device *dev = &hdev->dev;
@@ -493,6 +543,8 @@ int hci_register_sysfs(struct hci_dev *hdev) 
	debugfs_create_file("blacklist", 0444, hdev->debugfs,

						hdev, &blacklist_fops);



	debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);



	return 0;

}