src/lxc/rtnl.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include "config.h"
   4
   5 #include <errno.h>
   6 #include <linux/netlink.h>
   7 #include <linux/rtnetlink.h>
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <sys/socket.h>
  12 #include <unistd.h>
  13
  14 #include "nl.h"
  15 #include "rtnl.h"
  16
  17 int rtnetlink_open(struct rtnl_handler *handler)
  18 {
  19         return netlink_open(&handler->nlh, NETLINK_ROUTE);
  20 }
  21
  22 void rtnetlink_close(struct rtnl_handler *handler)
  23 {
  24         netlink_close(&handler->nlh);
  25 }
  26
  27 #pragma GCC diagnostic push
  28 #pragma GCC diagnostic ignored "-Wcast-align"
  29
  30 int rtnetlink_rcv(struct rtnl_handler *handler, struct rtnlmsg *rtnlmsg)
  31 {
  32         return netlink_rcv(&handler->nlh, (struct nlmsg *)&rtnlmsg->nlmsghdr);
  33 }
  34
  35 int rtnetlink_send(struct rtnl_handler *handler, struct rtnlmsg *rtnlmsg)
  36 {
  37
  38         return netlink_send(&handler->nlh, (struct nlmsg *)&rtnlmsg->nlmsghdr);
  39 }
  40
  41 int rtnetlink_transaction(struct rtnl_handler *handler, struct rtnlmsg *request,
  42                           struct rtnlmsg *answer)
  43 {
  44         return netlink_transaction(&handler->nlh,
  45                                    (struct nlmsg *)&request->nlmsghdr,
  46                                    (struct nlmsg *)&answer->nlmsghdr);
  47 }
  48
  49 #pragma GCC diagnostic pop
  50
  51 struct rtnlmsg *rtnlmsg_alloc(size_t size)
  52 {
  53         /*
  54         size_t len;
  55
  56         len = NLMSG_LENGTH(NLMSG_ALIGN(sizeof(struct rtnlmsghdr))) + size;
  57         return (struct rtnlmsg *)nlmsg_alloc(len);
  58         */
  59
  60         return NULL;
  61 }
  62
  63 void rtnlmsg_free(struct rtnlmsg *rtnlmsg) { free(rtnlmsg); }