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Bluetooth: Expose current list of long term keys via debugfs

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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: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2013-10-18 15:56:57 -07:00 committed by Johan Hedberg
parent d0f729b8c1
commit 8f8625cd80
1 changed files with 32 additions and 0 deletions
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32
net/bluetooth/hci_core.c
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@ -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;