diff options
Diffstat (limited to 'net/netlabel/netlabel_unlabeled.h')
-rw-r--r-- | net/netlabel/netlabel_unlabeled.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/net/netlabel/netlabel_unlabeled.h b/net/netlabel/netlabel_unlabeled.h new file mode 100644 index 00000000000..f300e54e14b --- /dev/null +++ b/net/netlabel/netlabel_unlabeled.h @@ -0,0 +1,98 @@ +/* + * NetLabel Unlabeled Support + * + * This file defines functions for dealing with unlabeled packets for the + * NetLabel system. The NetLabel system manages static and dynamic label + * mappings for network protocols such as CIPSO and RIPSO. + * + * Author: Paul Moore <paul.moore@hp.com> + * + */ + +/* + * (c) Copyright Hewlett-Packard Development Company, L.P., 2006 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef _NETLABEL_UNLABELED_H +#define _NETLABEL_UNLABELED_H + +#include <net/netlabel.h> + +/* + * The following NetLabel payloads are supported by the Unlabeled subsystem. + * + * o ACK: + * Sent by the kernel in response to an applications message, applications + * should never send this message. + * + * +----------------------+-----------------------+ + * | seq number (32 bits) | return code (32 bits) | + * +----------------------+-----------------------+ + * + * seq number: the sequence number of the original message, taken from the + * nlmsghdr structure + * return code: return value, based on errno values + * + * o ACCEPT + * This message is sent from an application to specify if the kernel should + * allow unlabled packets to pass if they do not match any of the static + * mappings defined in the unlabeled module. + * + * +-----------------+ + * | allow (32 bits) | + * +-----------------+ + * + * allow: if true (1) then allow the packets to pass, if false (0) then + * reject the packets + * + * o LIST + * This message can be sent either from an application or by the kernel in + * response to an application generated LIST message. When sent by an + * application there is no payload. The kernel should respond to a LIST + * message either with a LIST message on success or an ACK message on + * failure. + * + * +-----------------------+ + * | accept flag (32 bits) | + * +-----------------------+ + * + * accept flag: if true (1) then unlabeled packets are allowed to pass, + * if false (0) then unlabeled packets are rejected + * + */ + +/* NetLabel Unlabeled commands */ +enum { + NLBL_UNLABEL_C_UNSPEC, + NLBL_UNLABEL_C_ACK, + NLBL_UNLABEL_C_ACCEPT, + NLBL_UNLABEL_C_LIST, + __NLBL_UNLABEL_C_MAX, +}; +#define NLBL_UNLABEL_C_MAX (__NLBL_UNLABEL_C_MAX - 1) + +/* NetLabel protocol functions */ +int netlbl_unlabel_genl_init(void); + +/* Process Unlabeled incoming network packets */ +int netlbl_unlabel_getattr(struct netlbl_lsm_secattr *secattr); + +/* Set the default configuration to allow Unlabeled packets */ +int netlbl_unlabel_defconf(void); + +#endif |