sysdeps/unix/sysv/linux/netlinkaccess.h

   1 /* Copyright (C) 2004 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #ifndef _NETLINKACCESS_H
  20 #define _NETLINKACCESS_H 1
  21
  22 #include <asm/types.h>
  23 #include <linux/netlink.h>
  24 #include <linux/rtnetlink.h>
  25
  26 #include "kernel-features.h"
  27
  28
  29 struct netlink_res
  30 {
  31   struct netlink_res *next;
  32   struct nlmsghdr *nlh;
  33   size_t size;                  /* Size of response.  */
  34   uint32_t seq;                 /* sequential number we used.  */
  35 };
  36
  37
  38 struct netlink_handle
  39 {
  40   int fd;                       /* Netlink file descriptor.  */
  41   pid_t pid;                    /* Process ID.  */
  42   uint32_t seq;                 /* The sequence number we use currently.  */
  43   struct netlink_res *nlm_list; /* Pointer to list of responses.  */
  44   struct netlink_res *end_ptr;  /* For faster append of new entries.  */
  45 };
  46
  47
  48 #if __ASSUME_NETLINK_SUPPORT == 0
  49 extern int __no_netlink_support attribute_hidden;
  50 #else
  51 # define __no_netlink_support 0
  52 #endif
  53
  54
  55 extern int __netlink_open (struct netlink_handle *h);
  56 extern void __netlink_close (struct netlink_handle *h);
  57 extern void __netlink_free_handle (struct netlink_handle *h);
  58 extern int __netlink_sendreq (struct netlink_handle *h, int type);
  59 extern int __netlink_receive (struct netlink_handle *h);
  60
  61
  62 #endif /* netlinkaccess.h */