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Commit 02d08d15 authored by Marcel Holtmann's avatar Marcel Holtmann Committed by Johan Hedberg
Browse files

Bluetooth: Expose current list of link keys via debugfs 



For debugging purposes expose the current list of link keys via
debugfs. This file is read-only and limited to root access.

Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: default avatarJohan Hedberg <johan.hedberg@intel.com>
parent babdbb3c

net/bluetooth/hci_core.c

+30 −0
Original line number Diff line number Diff line
@@ -187,6 +187,34 @@ static const struct file_operations inquiry_cache_fops = { 
	.release	= single_release,

};



static int link_keys_show(struct seq_file *f, void *ptr)

{

	struct hci_dev *hdev = f->private;

	struct list_head *p, *n;



	hci_dev_lock(hdev);

	list_for_each_safe(p, n, &hdev->link_keys) {

		struct link_key *key = list_entry(p, struct link_key, list);

		seq_printf(f, "%pMR %u %*phN %u\n", &key->bdaddr, key->type,

			   HCI_LINK_KEY_SIZE, key->val, key->pin_len);

	}

	hci_dev_unlock(hdev);



	return 0;

}



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

{

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

}



static const struct file_operations link_keys_fops = {

	.open		= link_keys_open,

	.read		= seq_read,

	.llseek		= seq_lseek,

	.release	= single_release,

};



static int dev_class_show(struct seq_file *f, void *ptr)

{

	struct hci_dev *hdev = f->private;
@@ -1067,6 +1095,8 @@ static int __hci_init(struct hci_dev *hdev) 
	if (lmp_bredr_capable(hdev)) {

		debugfs_create_file("inquiry_cache", 0444, hdev->debugfs,

				    hdev, &inquiry_cache_fops);

		debugfs_create_file("link_keys", 0400, hdev->debugfs,

				    hdev, &link_keys_fops);

		debugfs_create_file("dev_class", 0444, hdev->debugfs,

				    hdev, &dev_class_fops);

		debugfs_create_file("voice_setting", 0444, hdev->debugfs,