net/netlabel/netlabel_mgmt.h

   1 /*
   2  * NetLabel Management Support
   3  *
   4  * This file defines the management functions for the NetLabel system.  The
   5  * NetLabel system manages static and dynamic label mappings for network
   6  * 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_MGMT_H
  32 #define _NETLABEL_MGMT_H
  33
  34 #include <net/netlabel.h>
  35
  36 /*
  37  * The following NetLabel payloads are supported by the management interface,
  38  * all of which are preceeded by the nlmsghdr struct.
  39  *
  40  * o ACK:
  41  *   Sent by the kernel in response to an applications message, applications
  42  *   should never send this message.
  43  *
  44  *   +----------------------+-----------------------+
  45  *   | seq number (32 bits) | return code (32 bits) |
  46  *   +----------------------+-----------------------+
  47  *
  48  *     seq number:  the sequence number of the original message, taken from the
  49  *                  nlmsghdr structure
  50  *     return code: return value, based on errno values
  51  *
  52  * o ADD:
  53  *   Sent by an application to add a domain mapping to the NetLabel system.
  54  *   The kernel should respond with an ACK.
  55  *
  56  *   +-------------------+
  57  *   | domains (32 bits) | ...
  58  *   +-------------------+
  59  *
  60  *     domains: the number of domains in the message
  61  *
  62  *   +--------------------------+-------------------------+
  63  *   | domain string (variable) | protocol type (32 bits) | ...
  64  *   +--------------------------+-------------------------+
  65  *
  66  *   +-------------- ---- --- -- -
  67  *   | mapping data                ... repeated
  68  *   +-------------- ---- --- -- -
  69  *
  70  *     domain string: the domain string, NULL terminated
  71  *     protocol type: the protocol type (defined by NETLBL_NLTYPE_*)
  72  *     mapping data:  specific to the map type (see below)
  73  *
  74  *   NETLBL_NLTYPE_UNLABELED
  75  *
  76  *     No mapping data for this protocol type.
  77  *
  78  *   NETLBL_NLTYPE_CIPSOV4
  79  *
  80  *   +---------------+
  81  *   | doi (32 bits) |
  82  *   +---------------+
  83  *
  84  *     doi:  the CIPSO DOI value
  85  *
  86  * o REMOVE:
  87  *   Sent by an application to remove a domain mapping from the NetLabel
  88  *   system.  The kernel should ACK this message.
  89  *
  90  *   +-------------------+
  91  *   | domains (32 bits) | ...
  92  *   +-------------------+
  93  *
  94  *     domains: the number of domains in the message
  95  *
  96  *   +--------------------------+
  97  *   | domain string (variable) | ...
  98  *   +--------------------------+
  99  *
 100  *     domain string: the domain string, NULL terminated
 101  *
 102  * o LIST:
 103  *   This message can be sent either from an application or by the kernel in
 104  *   response to an application generated LIST message.  When sent by an
 105  *   application there is no payload.  The kernel should respond to a LIST
 106  *   message either with a LIST message on success or an ACK message on
 107  *   failure.
 108  *
 109  *   +-------------------+
 110  *   | domains (32 bits) | ...
 111  *   +-------------------+
 112  *
 113  *     domains: the number of domains in the message
 114  *
 115  *   +--------------------------+
 116  *   | domain string (variable) | ...
 117  *   +--------------------------+
 118  *
 119  *   +-------------------------+-------------- ---- --- -- -
 120  *   | protocol type (32 bits) | mapping data                ... repeated
 121  *   +-------------------------+-------------- ---- --- -- -
 122  *
 123  *     domain string: the domain string, NULL terminated
 124  *     protocol type: the protocol type (defined by NETLBL_NLTYPE_*)
 125  *     mapping data:  specific to the map type (see below)
 126  *
 127  *   NETLBL_NLTYPE_UNLABELED
 128  *
 129  *     No mapping data for this protocol type.
 130  *
 131  *   NETLBL_NLTYPE_CIPSOV4
 132  *
 133  *   +----------------+---------------+
 134  *   | type (32 bits) | doi (32 bits) |
 135  *   +----------------+---------------+
 136  *
 137  *     type: the CIPSO mapping table type (defined in the cipso_ipv4.h header
 138  *           as CIPSO_V4_MAP_*)
 139  *     doi:  the CIPSO DOI value
 140  *
 141  * o ADDDEF:
 142  *   Sent by an application to set the default domain mapping for the NetLabel
 143  *   system.  The kernel should respond with an ACK.
 144  *
 145  *   +-------------------------+-------------- ---- --- -- -
 146  *   | protocol type (32 bits) | mapping data                ... repeated
 147  *   +-------------------------+-------------- ---- --- -- -
 148  *
 149  *     protocol type: the protocol type (defined by NETLBL_NLTYPE_*)
 150  *     mapping data:  specific to the map type (see below)
 151  *
 152  *   NETLBL_NLTYPE_UNLABELED
 153  *
 154  *     No mapping data for this protocol type.
 155  *
 156  *   NETLBL_NLTYPE_CIPSOV4
 157  *
 158  *   +---------------+
 159  *   | doi (32 bits) |
 160  *   +---------------+
 161  *
 162  *     doi:  the CIPSO DOI value
 163  *
 164  * o REMOVEDEF:
 165  *   Sent by an application to remove the default domain mapping from the
 166  *   NetLabel system, there is no payload.  The kernel should ACK this message.
 167  *
 168  * o LISTDEF:
 169  *   This message can be sent either from an application or by the kernel in
 170  *   response to an application generated LISTDEF message.  When sent by an
 171  *   application there is no payload.  The kernel should respond to a
 172  *   LISTDEF message either with a LISTDEF message on success or an ACK message
 173  *   on failure.
 174  *
 175  *   +-------------------------+-------------- ---- --- -- -
 176  *   | protocol type (32 bits) | mapping data                ... repeated
 177  *   +-------------------------+-------------- ---- --- -- -
 178  *
 179  *     protocol type: the protocol type (defined by NETLBL_NLTYPE_*)
 180  *     mapping data:  specific to the map type (see below)
 181  *
 182  *   NETLBL_NLTYPE_UNLABELED
 183  *
 184  *     No mapping data for this protocol type.
 185  *
 186  *   NETLBL_NLTYPE_CIPSOV4
 187  *
 188  *   +----------------+---------------+
 189  *   | type (32 bits) | doi (32 bits) |
 190  *   +----------------+---------------+
 191  *
 192  *     type: the CIPSO mapping table type (defined in the cipso_ipv4.h header
 193  *           as CIPSO_V4_MAP_*)
 194  *     doi:  the CIPSO DOI value
 195  *
 196  * o MODULES:
 197  *   Sent by an application to request a list of configured NetLabel modules
 198  *   in the kernel.  When sent by an application there is no payload.
 199  *
 200  *   +-------------------+
 201  *   | modules (32 bits) | ...
 202  *   +-------------------+
 203  *
 204  *     modules: the number of modules in the message, if this is an application
 205  *              generated message and the value is zero then return a list of
 206  *              the configured modules
 207  *
 208  *   +------------------+
 209  *   | module (32 bits) | ... repeated
 210  *   +------------------+
 211  *
 212  *     module: the module number as defined by NETLBL_NLTYPE_*
 213  *
 214  * o VERSION:
 215  *   Sent by an application to request the NetLabel version string.  When sent
 216  *   by an application there is no payload.  This message type is also used by
 217  *   the kernel to respond to an VERSION request.
 218  *
 219  *   +-------------------+
 220  *   | version (32 bits) |
 221  *   +-------------------+
 222  *
 223  *     version: the protocol version number
 224  *
 225  */
 226
 227 /* NetLabel Management commands */
 228 enum {
 229         NLBL_MGMT_C_UNSPEC,
 230         NLBL_MGMT_C_ACK,
 231         NLBL_MGMT_C_ADD,
 232         NLBL_MGMT_C_REMOVE,
 233         NLBL_MGMT_C_LIST,
 234         NLBL_MGMT_C_ADDDEF,
 235         NLBL_MGMT_C_REMOVEDEF,
 236         NLBL_MGMT_C_LISTDEF,
 237         NLBL_MGMT_C_MODULES,
 238         NLBL_MGMT_C_VERSION,
 239         __NLBL_MGMT_C_MAX,
 240 };
 241 #define NLBL_MGMT_C_MAX (__NLBL_MGMT_C_MAX - 1)
 242
 243 /* NetLabel protocol functions */
 244 int netlbl_mgmt_genl_init(void);
 245
 246 #endif