net/netlabel/netlabel_user.h

   1 /*
   2  * NetLabel NETLINK Interface
   3  *
   4  * This file defines the NETLINK interface 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_USER_H
  32 #define _NETLABEL_USER_H
  33
  34 #include <linux/types.h>
  35 #include <linux/skbuff.h>
  36 #include <linux/capability.h>
  37 #include <linux/audit.h>
  38 #include <net/netlink.h>
  39 #include <net/genetlink.h>
  40 #include <net/netlabel.h>
  41
  42 /* NetLabel NETLINK helper functions */
  43
  44 /**
  45  * netlbl_netlink_hdr_put - Write the NETLINK buffers into a sk_buff
  46  * @skb: the packet
  47  * @pid: the PID of the receipient
  48  * @seq: the sequence number
  49  * @type: the generic NETLINK message family type
  50  * @cmd: command
  51  *
  52  * Description:
  53  * Write both a NETLINK nlmsghdr structure and a Generic NETLINK genlmsghdr
  54  * struct to the packet.  Returns a pointer to the start of the payload buffer
  55  * on success or NULL on failure.
  56  *
  57  */
  58 static inline void *netlbl_netlink_hdr_put(struct sk_buff *skb,
  59                                            u32 pid,
  60                                            u32 seq,
  61                                            int type,
  62                                            int flags,
  63                                            u8 cmd)
  64 {
  65         return genlmsg_put(skb,
  66                            pid,
  67                            seq,
  68                            type,
  69                            0,
  70                            flags,
  71                            cmd,
  72                            NETLBL_PROTO_VERSION);
  73 }
  74
  75 /**
  76  * netlbl_netlink_auditinfo - Fetch the audit information from a NETLINK msg
  77  * @skb: the packet
  78  * @audit_info: NetLabel audit information
  79  */
  80 static inline void netlbl_netlink_auditinfo(struct sk_buff *skb,
  81                                             struct netlbl_audit *audit_info)
  82 {
  83         audit_info->secid = NETLINK_CB(skb).sid;
  84         audit_info->loginuid = NETLINK_CB(skb).loginuid;
  85 }
  86
  87 /* NetLabel NETLINK I/O functions */
  88
  89 int netlbl_netlink_init(void);
  90
  91 /* NetLabel Audit Functions */
  92
  93 struct audit_buffer *netlbl_audit_start_common(int type,
  94                                               struct netlbl_audit *audit_info);
  95
  96 #endif