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@paul-moore.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, see <http://www.gnu.org/licenses/>.
  27  *
  28  */
  29
  30 #ifndef _NETLABEL_MGMT_H
  31 #define _NETLABEL_MGMT_H
  32
  33 #include <net/netlabel.h>
  34 #include <linux/atomic.h>
  35
  36 /*
  37  * The following NetLabel payloads are supported by the management interface.
  38  *
  39  * o ADD:
  40  *   Sent by an application to add a domain mapping to the NetLabel system.
  41  *
  42  *   Required attributes:
  43  *
  44  *     NLBL_MGMT_A_DOMAIN
  45  *     NLBL_MGMT_A_PROTOCOL
  46  *
  47  *   If IPv4 is specified the following attributes are required:
  48  *
  49  *     NLBL_MGMT_A_IPV4ADDR
  50  *     NLBL_MGMT_A_IPV4MASK
  51  *
  52  *   If IPv6 is specified the following attributes are required:
  53  *
  54  *     NLBL_MGMT_A_IPV6ADDR
  55  *     NLBL_MGMT_A_IPV6MASK
  56  *
  57  *   If using NETLBL_NLTYPE_CIPSOV4 the following attributes are required:
  58  *
  59  *     NLBL_MGMT_A_CV4DOI
  60  *
  61  *   If using NETLBL_NLTYPE_UNLABELED no other attributes are required.
  62  *
  63  * o REMOVE:
  64  *   Sent by an application to remove a domain mapping from the NetLabel
  65  *   system.
  66  *
  67  *   Required attributes:
  68  *
  69  *     NLBL_MGMT_A_DOMAIN
  70  *
  71  * o LISTALL:
  72  *   This message can be sent either from an application or by the kernel in
  73  *   response to an application generated LISTALL message.  When sent by an
  74  *   application there is no payload and the NLM_F_DUMP flag should be set.
  75  *   The kernel should respond with a series of the following messages.
  76  *
  77  *   Required attributes:
  78  *
  79  *     NLBL_MGMT_A_DOMAIN
  80  *
  81  *   If the IP address selectors are not used the following attribute is
  82  *   required:
  83  *
  84  *     NLBL_MGMT_A_PROTOCOL
  85  *
  86  *   If the IP address selectors are used then the following attritbute is
  87  *   required:
  88  *
  89  *     NLBL_MGMT_A_SELECTORLIST
  90  *
  91  *   If the mapping is using the NETLBL_NLTYPE_CIPSOV4 type then the following
  92  *   attributes are required:
  93  *
  94  *     NLBL_MGMT_A_CV4DOI
  95  *
  96  *   If the mapping is using the NETLBL_NLTYPE_UNLABELED type no other
  97  *   attributes are required.
  98  *
  99  * o ADDDEF:
 100  *   Sent by an application to set the default domain mapping for the NetLabel
 101  *   system.
 102  *
 103  *   Required attributes:
 104  *
 105  *     NLBL_MGMT_A_PROTOCOL
 106  *
 107  *   If using NETLBL_NLTYPE_CIPSOV4 the following attributes are required:
 108  *
 109  *     NLBL_MGMT_A_CV4DOI
 110  *
 111  *   If using NETLBL_NLTYPE_UNLABELED no other attributes are required.
 112  *
 113  * o REMOVEDEF:
 114  *   Sent by an application to remove the default domain mapping from the
 115  *   NetLabel system, there is no payload.
 116  *
 117  * o LISTDEF:
 118  *   This message can be sent either from an application or by the kernel in
 119  *   response to an application generated LISTDEF message.  When sent by an
 120  *   application there is no payload.  On success the kernel should send a
 121  *   response using the following format.
 122  *
 123  *   If the IP address selectors are not used the following attribute is
 124  *   required:
 125  *
 126  *     NLBL_MGMT_A_PROTOCOL
 127  *
 128  *   If the IP address selectors are used then the following attritbute is
 129  *   required:
 130  *
 131  *     NLBL_MGMT_A_SELECTORLIST
 132  *
 133  *   If the mapping is using the NETLBL_NLTYPE_CIPSOV4 type then the following
 134  *   attributes are required:
 135  *
 136  *     NLBL_MGMT_A_CV4DOI
 137  *
 138  *   If the mapping is using the NETLBL_NLTYPE_UNLABELED type no other
 139  *   attributes are required.
 140  *
 141  * o PROTOCOLS:
 142  *   Sent by an application to request a list of configured NetLabel protocols
 143  *   in the kernel.  When sent by an application there is no payload and the
 144  *   NLM_F_DUMP flag should be set.  The kernel should respond with a series of
 145  *   the following messages.
 146  *
 147  *   Required attributes:
 148  *
 149  *     NLBL_MGMT_A_PROTOCOL
 150  *
 151  * o VERSION:
 152  *   Sent by an application to request the NetLabel version.  When sent by an
 153  *   application there is no payload.  This message type is also used by the
 154  *   kernel to respond to an VERSION request.
 155  *
 156  *   Required attributes:
 157  *
 158  *     NLBL_MGMT_A_VERSION
 159  *
 160  */
 161
 162 /* NetLabel Management commands */
 163 enum {
 164         NLBL_MGMT_C_UNSPEC,
 165         NLBL_MGMT_C_ADD,
 166         NLBL_MGMT_C_REMOVE,
 167         NLBL_MGMT_C_LISTALL,
 168         NLBL_MGMT_C_ADDDEF,
 169         NLBL_MGMT_C_REMOVEDEF,
 170         NLBL_MGMT_C_LISTDEF,
 171         NLBL_MGMT_C_PROTOCOLS,
 172         NLBL_MGMT_C_VERSION,
 173         __NLBL_MGMT_C_MAX,
 174 };
 175
 176 /* NetLabel Management attributes */
 177 enum {
 178         NLBL_MGMT_A_UNSPEC,
 179         NLBL_MGMT_A_DOMAIN,
 180         /* (NLA_NUL_STRING)
 181          * the NULL terminated LSM domain string */
 182         NLBL_MGMT_A_PROTOCOL,
 183         /* (NLA_U32)
 184          * the NetLabel protocol type (defined by NETLBL_NLTYPE_*) */
 185         NLBL_MGMT_A_VERSION,
 186         /* (NLA_U32)
 187          * the NetLabel protocol version number (defined by
 188          * NETLBL_PROTO_VERSION) */
 189         NLBL_MGMT_A_CV4DOI,
 190         /* (NLA_U32)
 191          * the CIPSOv4 DOI value */
 192         NLBL_MGMT_A_IPV6ADDR,
 193         /* (NLA_BINARY, struct in6_addr)
 194          * an IPv6 address */
 195         NLBL_MGMT_A_IPV6MASK,
 196         /* (NLA_BINARY, struct in6_addr)
 197          * an IPv6 address mask */
 198         NLBL_MGMT_A_IPV4ADDR,
 199         /* (NLA_BINARY, struct in_addr)
 200          * an IPv4 address */
 201         NLBL_MGMT_A_IPV4MASK,
 202         /* (NLA_BINARY, struct in_addr)
 203          * and IPv4 address mask */
 204         NLBL_MGMT_A_ADDRSELECTOR,
 205         /* (NLA_NESTED)
 206          * an IP address selector, must contain an address, mask, and protocol
 207          * attribute plus any protocol specific attributes */
 208         NLBL_MGMT_A_SELECTORLIST,
 209         /* (NLA_NESTED)
 210          * the selector list, there must be at least one
 211          * NLBL_MGMT_A_ADDRSELECTOR attribute */
 212         __NLBL_MGMT_A_MAX,
 213 };
 214 #define NLBL_MGMT_A_MAX (__NLBL_MGMT_A_MAX - 1)
 215
 216 /* NetLabel protocol functions */
 217 int netlbl_mgmt_genl_init(void);
 218
 219 /* NetLabel configured protocol reference counter */
 220 extern atomic_t netlabel_mgmt_protocount;
 221
 222 #endif