1  /*
       2   * Copyright (c) 2015-2017 Dmitry V. Levin <ldv@strace.io>
       3   * Copyright (c) 2017-2021 The strace developers.
       4   * All rights reserved.
       5   *
       6   * SPDX-License-Identifier: GPL-2.0-or-later
       7   */
       8  
       9  #include "tests.h"
      10  #include <sys/socket.h>
      11  #include "netlink.h"
      12  
      13  int
      14  create_nl_socket_ext(const int proto, const char *const name)
      15  {
      16  	const int fd = socket(AF_NETLINK, SOCK_RAW, proto);
      17  	if (fd < 0)
      18  		perror_msg_and_skip("socket AF_NETLINK %s", name);
      19  
      20  	const struct sockaddr_nl addr = { .nl_family = AF_NETLINK };
      21  	socklen_t len = sizeof(addr);
      22  
      23  	if (bind(fd, (const struct sockaddr *) &addr, len))
      24  		perror_msg_and_skip("bind AF_NETLINK %s", name);
      25  
      26  	/* one more operation on this socket to win the race */
      27  	int listening;
      28  	len = sizeof(listening);
      29  	if (getsockopt(fd, SOL_SOCKET, SO_ACCEPTCONN, &listening, &len))
      30  		perror_msg_and_fail("getsockopt");
      31  
      32  	return fd;
      33  }