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-rw-r--r--net/netlabel/netlabel_kapi.c152
1 files changed, 132 insertions, 20 deletions
diff --git a/net/netlabel/netlabel_kapi.c b/net/netlabel/netlabel_kapi.c
index fd9229db075c..cae2f5f4cac0 100644
--- a/net/netlabel/netlabel_kapi.c
+++ b/net/netlabel/netlabel_kapi.c
@@ -619,8 +619,9 @@ int netlbl_enabled(void)
}
/**
- * netlbl_socket_setattr - Label a socket using the correct protocol
+ * netlbl_sock_setattr - Label a socket using the correct protocol
* @sk: the socket to label
+ * @family: protocol family
* @secattr: the security attributes
*
* Description:
@@ -633,29 +634,45 @@ int netlbl_enabled(void)
*
*/
int netlbl_sock_setattr(struct sock *sk,
+ u16 family,
const struct netlbl_lsm_secattr *secattr)
{
- int ret_val = -ENOENT;
+ int ret_val;
struct netlbl_dom_map *dom_entry;
rcu_read_lock();
dom_entry = netlbl_domhsh_getentry(secattr->domain);
- if (dom_entry == NULL)
+ if (dom_entry == NULL) {
+ ret_val = -ENOENT;
goto socket_setattr_return;
- switch (dom_entry->type) {
- case NETLBL_NLTYPE_ADDRSELECT:
- ret_val = -EDESTADDRREQ;
- break;
- case NETLBL_NLTYPE_CIPSOV4:
- ret_val = cipso_v4_sock_setattr(sk,
- dom_entry->type_def.cipsov4,
- secattr);
+ }
+ switch (family) {
+ case AF_INET:
+ switch (dom_entry->type) {
+ case NETLBL_NLTYPE_ADDRSELECT:
+ ret_val = -EDESTADDRREQ;
+ break;
+ case NETLBL_NLTYPE_CIPSOV4:
+ ret_val = cipso_v4_sock_setattr(sk,
+ dom_entry->type_def.cipsov4,
+ secattr);
+ break;
+ case NETLBL_NLTYPE_UNLABELED:
+ ret_val = 0;
+ break;
+ default:
+ ret_val = -ENOENT;
+ }
break;
- case NETLBL_NLTYPE_UNLABELED:
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+ case AF_INET6:
+ /* since we don't support any IPv6 labeling protocols right
+ * now we can optimize everything away until we do */
ret_val = 0;
break;
+#endif /* IPv6 */
default:
- ret_val = -ENOENT;
+ ret_val = -EPROTONOSUPPORT;
}
socket_setattr_return:
@@ -689,9 +706,25 @@ void netlbl_sock_delattr(struct sock *sk)
* on failure.
*
*/
-int netlbl_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
+int netlbl_sock_getattr(struct sock *sk,
+ struct netlbl_lsm_secattr *secattr)
{
- return cipso_v4_sock_getattr(sk, secattr);
+ int ret_val;
+
+ switch (sk->sk_family) {
+ case AF_INET:
+ ret_val = cipso_v4_sock_getattr(sk, secattr);
+ break;
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+ case AF_INET6:
+ ret_val = -ENOMSG;
+ break;
+#endif /* IPv6 */
+ default:
+ ret_val = -EPROTONOSUPPORT;
+ }
+
+ return ret_val;
}
/**
@@ -748,7 +781,7 @@ int netlbl_conn_setattr(struct sock *sk,
break;
#endif /* IPv6 */
default:
- ret_val = 0;
+ ret_val = -EPROTONOSUPPORT;
}
conn_setattr_return:
@@ -757,6 +790,77 @@ conn_setattr_return:
}
/**
+ * netlbl_req_setattr - Label a request socket using the correct protocol
+ * @req: the request socket to label
+ * @secattr: the security attributes
+ *
+ * Description:
+ * Attach the correct label to the given socket using the security attributes
+ * specified in @secattr. Returns zero on success, negative values on failure.
+ *
+ */
+int netlbl_req_setattr(struct request_sock *req,
+ const struct netlbl_lsm_secattr *secattr)
+{
+ int ret_val;
+ struct netlbl_dom_map *dom_entry;
+ struct netlbl_domaddr4_map *af4_entry;
+ u32 proto_type;
+ struct cipso_v4_doi *proto_cv4;
+
+ rcu_read_lock();
+ dom_entry = netlbl_domhsh_getentry(secattr->domain);
+ if (dom_entry == NULL) {
+ ret_val = -ENOENT;
+ goto req_setattr_return;
+ }
+ switch (req->rsk_ops->family) {
+ case AF_INET:
+ if (dom_entry->type == NETLBL_NLTYPE_ADDRSELECT) {
+ struct inet_request_sock *req_inet = inet_rsk(req);
+ af4_entry = netlbl_domhsh_getentry_af4(secattr->domain,
+ req_inet->rmt_addr);
+ if (af4_entry == NULL) {
+ ret_val = -ENOENT;
+ goto req_setattr_return;
+ }
+ proto_type = af4_entry->type;
+ proto_cv4 = af4_entry->type_def.cipsov4;
+ } else {
+ proto_type = dom_entry->type;
+ proto_cv4 = dom_entry->type_def.cipsov4;
+ }
+ switch (proto_type) {
+ case NETLBL_NLTYPE_CIPSOV4:
+ ret_val = cipso_v4_req_setattr(req, proto_cv4, secattr);
+ break;
+ case NETLBL_NLTYPE_UNLABELED:
+ /* just delete the protocols we support for right now
+ * but we could remove other protocols if needed */
+ cipso_v4_req_delattr(req);
+ ret_val = 0;
+ break;
+ default:
+ ret_val = -ENOENT;
+ }
+ break;
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+ case AF_INET6:
+ /* since we don't support any IPv6 labeling protocols right
+ * now we can optimize everything away until we do */
+ ret_val = 0;
+ break;
+#endif /* IPv6 */
+ default:
+ ret_val = -EPROTONOSUPPORT;
+ }
+
+req_setattr_return:
+ rcu_read_unlock();
+ return ret_val;
+}
+
+/**
* netlbl_skbuff_setattr - Label a packet using the correct protocol
* @skb: the packet
* @family: protocol family
@@ -808,7 +912,7 @@ int netlbl_skbuff_setattr(struct sk_buff *skb,
break;
#endif /* IPv6 */
default:
- ret_val = 0;
+ ret_val = -EPROTONOSUPPORT;
}
skbuff_setattr_return:
@@ -833,9 +937,17 @@ int netlbl_skbuff_getattr(const struct sk_buff *skb,
u16 family,
struct netlbl_lsm_secattr *secattr)
{
- if (CIPSO_V4_OPTEXIST(skb) &&
- cipso_v4_skbuff_getattr(skb, secattr) == 0)
- return 0;
+ switch (family) {
+ case AF_INET:
+ if (CIPSO_V4_OPTEXIST(skb) &&
+ cipso_v4_skbuff_getattr(skb, secattr) == 0)
+ return 0;
+ break;
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+ case AF_INET6:
+ break;
+#endif /* IPv6 */
+ }
return netlbl_unlabel_getattr(skb, family, secattr);
}