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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: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2013-10-18 12:04:52 -07:00 committed by Johan Hedberg
parent babdbb3c13
commit 02d08d15e0
1 changed files with 30 additions and 0 deletions
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30
net/bluetooth/hci_core.c
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@ -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,