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: Marcel Holtmann <marcel@xxxxxxxxxxxx>
---
net/bluetooth/hci_core.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 3ef5fdd..ee946cb 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -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,
--
1.8.3.1
--
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