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