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Commit 8f8625cd authored by Marcel Holtmann's avatar Marcel Holtmann Committed by Johan Hedberg
Browse files

Bluetooth: Expose current list of long term keys via debugfs 



For debugging purposes expose the current list of long term 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 d0f729b8

net/bluetooth/hci_core.c

+32 −0
Original line number Diff line number Diff line
@@ -385,6 +385,36 @@ static const struct file_operations static_address_fops = { 
	.release	= single_release,

};



static int long_term_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 smp_ltk *ltk = list_entry(p, struct smp_ltk, list);

		seq_printf(f, "%pMR (type %u) %u %u %u %.4x %*phN %*phN\\n",

			   &ltk->bdaddr, ltk->bdaddr_type, ltk->authenticated,

			   ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv),

			   8, ltk->rand, 16, ltk->val);

	}

	hci_dev_unlock(hdev);



	return 0;

}



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

{

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

}



static const struct file_operations long_term_keys_fops = {

	.open		= long_term_keys_open,

	.read		= seq_read,

	.llseek		= seq_lseek,

	.release	= single_release,

};



/* ---- HCI requests ---- */



static void hci_req_sync_complete(struct hci_dev *hdev, u8 result)
@@ -1121,6 +1151,8 @@ static int __hci_init(struct hci_dev *hdev) 
				  &hdev->le_white_list_size);

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

				   hdev, &static_address_fops);

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

				    hdev, &long_term_keys_fops);

	}



	return 0;