99 lines
3.1 KiB
C
99 lines
3.1 KiB
C
|
/*
|
||
|
|
* 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
|