Bluetooth: Introduce a whitelist for BR/EDR devices

[mirror_ubuntu-bionic-kernel.git] / net / bluetooth / hci_core.c

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 705f8df7af9631e33eedcfe858bb5135da0d4777..728a6ee471eac45255b011739aef8873a6ba88ad 100644 (file)
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -191,6 +191,31 @@ static const struct file_operations blacklist_fops = {
        .release        = single_release,
 };
 
+static int whitelist_show(struct seq_file *f, void *p)
+{
+       struct hci_dev *hdev = f->private;
+       struct bdaddr_list *b;
+
+       hci_dev_lock(hdev);
+       list_for_each_entry(b, &hdev->whitelist, list)
+               seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type);
+       hci_dev_unlock(hdev);
+
+       return 0;
+}
+
+static int whitelist_open(struct inode *inode, struct file *file)
+{
+       return single_open(file, whitelist_show, inode->i_private);
+}
+
+static const struct file_operations whitelist_fops = {
+       .open           = whitelist_open,
+       .read           = seq_read,
+       .llseek         = seq_lseek,
+       .release        = single_release,
+};
+
 static int uuids_show(struct seq_file *f, void *p)
 {
        struct hci_dev *hdev = f->private;
@@ -1707,6 +1732,8 @@ static int __hci_init(struct hci_dev *hdev)
        debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev);
        debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev,
                            &blacklist_fops);
+       debugfs_create_file("whitelist", 0444, hdev->debugfs, hdev,
+                           &whitelist_fops);
        debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops);
 
        debugfs_create_file("conn_info_min_age", 0644, hdev->debugfs, hdev,
@@ -3825,6 +3852,7 @@ struct hci_dev *hci_alloc_dev(void)
 
        INIT_LIST_HEAD(&hdev->mgmt_pending);
        INIT_LIST_HEAD(&hdev->blacklist);
+       INIT_LIST_HEAD(&hdev->whitelist);
        INIT_LIST_HEAD(&hdev->uuids);
        INIT_LIST_HEAD(&hdev->link_keys);
        INIT_LIST_HEAD(&hdev->long_term_keys);
@@ -4036,6 +4064,7 @@ void hci_unregister_dev(struct hci_dev *hdev)
 
        hci_dev_lock(hdev);
        hci_bdaddr_list_clear(&hdev->blacklist);
+       hci_bdaddr_list_clear(&hdev->whitelist);
        hci_uuids_clear(hdev);
        hci_link_keys_clear(hdev);
        hci_smp_ltks_clear(hdev);