TWxSoftware/twx-linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Bluetooth: Add blacklist support for incoming connections

Browse Source 
In some circumstances it could be desirable to reject incoming
connections on the baseband level. This patch adds this feature through
two new ioctl's: HCIBLOCKADDR and HCIUNBLOCKADDR. Both take a simple
Bluetooth address as a parameter. BDADDR_ANY can be used with
HCIUNBLOCKADDR to remove all devices from the blacklist.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg
2010-05-18 13:20:32 +02:00
committed by Marcel Holtmann
parent 95ffa97827
commit f03585689f
6 changed files with 108 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
net/bluetooth/hci_sock.c
+90
View File
@@ -165,6 +165,86 @@ static int hci_sock_release(struct socket *sock)
return 0;
}
struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr)
{
struct list_head *p;
struct bdaddr_list *blacklist = &hdev->blacklist;
list_for_each(p, &blacklist->list) {
struct bdaddr_list *b;
b = list_entry(p, struct bdaddr_list, list);
if (bacmp(bdaddr, &b->bdaddr) == 0)
return b;
}
return NULL;
}
static int hci_blacklist_add(struct hci_dev *hdev, void __user *arg)
{
bdaddr_t bdaddr;
struct bdaddr_list *entry;
if (copy_from_user(&bdaddr, arg, sizeof(bdaddr)))
return -EFAULT;
if (bacmp(&bdaddr, BDADDR_ANY) == 0)
return -EBADF;
if (hci_blacklist_lookup(hdev, &bdaddr))
return -EEXIST;
entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL);
if (!entry)
return -ENOMEM;
bacpy(&entry->bdaddr, &bdaddr);
list_add(&entry->list, &hdev->blacklist.list);
return 0;
}
int hci_blacklist_clear(struct hci_dev *hdev)
{
struct list_head *p, *n;
struct bdaddr_list *blacklist = &hdev->blacklist;
list_for_each_safe(p, n, &blacklist->list) {
struct bdaddr_list *b;
b = list_entry(p, struct bdaddr_list, list);
list_del(p);
kfree(b);
}
return 0;
}
static int hci_blacklist_del(struct hci_dev *hdev, void __user *arg)
{
bdaddr_t bdaddr;
struct bdaddr_list *entry;
if (copy_from_user(&bdaddr, arg, sizeof(bdaddr)))
return -EFAULT;
if (bacmp(&bdaddr, BDADDR_ANY) == 0)
return hci_blacklist_clear(hdev);
entry = hci_blacklist_lookup(hdev, &bdaddr);
if (!entry)
return -ENOENT;
list_del(&entry->list);
kfree(entry);
return 0;
}
/* Ioctls that require bound socket */
static inline int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg)
{
@@ -194,6 +274,16 @@ static inline int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, unsign
case HCIGETAUTHINFO:
return hci_get_auth_info(hdev, (void __user *) arg);
case HCIBLOCKADDR:
if (!capable(CAP_NET_ADMIN))
return -EACCES;
return hci_blacklist_add(hdev, (void __user *) arg);
case HCIUNBLOCKADDR:
if (!capable(CAP_NET_ADMIN))
return -EACCES;
return hci_blacklist_del(hdev, (void __user *) arg);
default:
if (hdev->ioctl)
return hdev->ioctl(hdev, cmd, arg);