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: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index 5fce3d6..23471dd 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -461,6 +461,56 @@
.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 @@
debugfs_create_file("blacklist", 0444, hdev->debugfs,
hdev, &blacklist_fops);
+ debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
+
return 0;
}