#include <net/netlabel.h>
#include <net/cipso_ipv4.h>
#include <asm/bug.h>
+#include <asm/atomic.h>
#include "netlabel_domainhash.h"
#include "netlabel_unlabeled.h"
#include "netlabel_user.h"
+#include "netlabel_mgmt.h"
/*
* Security Attribute Functions
* LSM Functions
*/
+/**
+ * netlbl_enabled - Determine if the NetLabel subsystem is enabled
+ *
+ * Description:
+ * The LSM can use this function to determine if it should use NetLabel
+ * security attributes in it's enforcement mechanism. Currently, NetLabel is
+ * considered to be enabled when it's configuration contains a valid setup for
+ * at least one labeled protocol (i.e. NetLabel can understand incoming
+ * labeled packets of at least one type); otherwise NetLabel is considered to
+ * be disabled.
+ *
+ */
+int netlbl_enabled(void)
+{
+ /* At some point we probably want to expose this mechanism to the user
+ * as well so that admins can toggle NetLabel regardless of the
+ * configuration */
+ return (atomic_read(&netlabel_mgmt_protocount) > 0);
+}
+
/**
* netlbl_socket_setattr - Label a socket using the correct protocol
* @sk: the socket to label
* @secattr: the security attributes
*
* Description:
- * Examines the given sock to see any NetLabel style labeling has been
+ * Examines the given sock to see if any NetLabel style labeling has been
* applied to the sock, if so it parses the socket label and returns the
* security attributes in @secattr. Returns zero on success, negative values
* on failure.
*/
int netlbl_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- int ret_val;
-
- ret_val = cipso_v4_sock_getattr(sk, secattr);
- if (ret_val == 0)
- return 0;
-
- return netlbl_unlabel_getattr(secattr);
+ return cipso_v4_sock_getattr(sk, secattr);
}
/**
* netlbl_skbuff_getattr - Determine the security attributes of a packet
* @skb: the packet
+ * @family: protocol family
* @secattr: the security attributes
*
* Description:
*
*/
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;
- return netlbl_unlabel_getattr(secattr);
+ return netlbl_unlabel_getattr(skb, family, secattr);
}
/**
if (ret_val != 0)
goto init_failure;
+ ret_val = netlbl_unlabel_init(NETLBL_UNLHSH_BITSIZE);
+ if (ret_val != 0)
+ goto init_failure;
+
ret_val = netlbl_netlink_init();
if (ret_val != 0)
goto init_failure;