net/netlabel/netlabel_unlabeled.h

   1 /*
   2  * NetLabel Unlabeled Support
   3  *
   4  * This file defines functions for dealing with unlabeled packets for the
   5  * NetLabel system.  The NetLabel system manages static and dynamic label
   6  * mappings for network protocols such as CIPSO and RIPSO.
   7  *
   8  * Author: Paul Moore <paul.moore@hp.com>
   9  *
  10  */
  11
  12 /*
  13  * (c) Copyright Hewlett-Packard Development Company, L.P., 2006
  14  *
  15  * This program is free software;  you can redistribute it and/or modify
  16  * it under the terms of the GNU General Public License as published by
  17  * the Free Software Foundation; either version 2 of the License, or
  18  * (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY;  without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  23  * the GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program;  if not, write to the Free Software
  27  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  28  *
  29  */
  30
  31 #ifndef _NETLABEL_UNLABELED_H
  32 #define _NETLABEL_UNLABELED_H
  33
  34 #include <net/netlabel.h>
  35
  36 /*
  37  * The following NetLabel payloads are supported by the Unlabeled subsystem.
  38  *
  39  * o ACCEPT
  40  *   This message is sent from an application to specify if the kernel should
  41  *   allow unlabled packets to pass if they do not match any of the static
  42  *   mappings defined in the unlabeled module.
  43  *
  44  *   Required attributes:
  45  *
  46  *     NLBL_UNLABEL_A_ACPTFLG
  47  *
  48  * o LIST
  49  *   This message can be sent either from an application or by the kernel in
  50  *   response to an application generated LIST message.  When sent by an
  51  *   application there is no payload.  The kernel should respond to a LIST
  52  *   message with a LIST message on success.
  53  *
  54  *   Required attributes:
  55  *
  56  *     NLBL_UNLABEL_A_ACPTFLG
  57  *
  58  */
  59
  60 /* NetLabel Unlabeled commands */
  61 enum {
  62         NLBL_UNLABEL_C_UNSPEC,
  63         NLBL_UNLABEL_C_ACCEPT,
  64         NLBL_UNLABEL_C_LIST,
  65         __NLBL_UNLABEL_C_MAX,
  66 };
  67 #define NLBL_UNLABEL_C_MAX (__NLBL_UNLABEL_C_MAX - 1)
  68
  69 /* NetLabel Unlabeled attributes */
  70 enum {
  71         NLBL_UNLABEL_A_UNSPEC,
  72         NLBL_UNLABEL_A_ACPTFLG,
  73         /* (NLA_U8)
  74          * if true then unlabeled packets are allowed to pass, else unlabeled
  75          * packets are rejected */
  76         __NLBL_UNLABEL_A_MAX,
  77 };
  78 #define NLBL_UNLABEL_A_MAX (__NLBL_UNLABEL_A_MAX - 1)
  79
  80 /* NetLabel protocol functions */
  81 int netlbl_unlabel_genl_init(void);
  82
  83 /* Process Unlabeled incoming network packets */
  84 int netlbl_unlabel_getattr(struct netlbl_lsm_secattr *secattr);
  85
  86 /* Set the default configuration to allow Unlabeled packets */
  87 int netlbl_unlabel_defconf(void);
  88
  89 #endif