text: /*
   * Copyright (c) 2017 The strace developers.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. The name of the author may not be used to endorse or promote products
   *    derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  /* This test case is based on netlink_selinux.c */
  
  #include "tests.h"
  
  #ifdef HAVE_LINUX_GENETLINK_H
  
  # include <stdio.h>
  # include <string.h>
  # include <unistd.h>
  # include <sys/socket.h>
  # include "netlink.h"
  # include <linux/genetlink.h>
  
  static void
  test_nlmsg_type(const int fd)
  {
  	/*
  	 * Though GENL_ID_CTRL number is statically fixed in this test case,
  	 * strace does not have a builtin knowledge that the corresponding
  	 * string is "nlctrl".
  	 */
  	long rc;
  	struct {
  		const struct nlmsghdr nlh;
  		struct genlmsghdr gnlh;
  	} req = {
  		.nlh = {
  			.nlmsg_len = sizeof(req),
  			.nlmsg_type = GENL_ID_CTRL,
  			.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST
  		},
  		.gnlh = {
  			.cmd = CTRL_CMD_GETFAMILY
  		}
  	};
  
  	rc = sendto(fd, &req, sizeof(req), MSG_DONTWAIT, NULL, 0);
  	printf("sendto(%d, {{len=%u, type=nlctrl"
  	       ", flags=NLM_F_REQUEST|0x300, seq=0, pid=0}"
  	       ", \"\\x03\\x00\\x00\\x00\"}, %u"
  	       ", MSG_DONTWAIT, NULL, 0) = %s\n",
  	       fd, req.nlh.nlmsg_len,
  	       (unsigned int) sizeof(req), sprintrc(rc));
  }
  
  int main(void)
  {
  	skip_if_unavailable("/proc/self/fd/");
  
  	int fd = create_nl_socket(NETLINK_GENERIC);
  
  	test_nlmsg_type(fd);
  
  	printf("+++ exited with 0 +++\n");
  
  	return 0;
  }
  
  #else
  
  SKIP_MAIN_UNDEFINED("HAVE_LINUX_GENETLINK_H")
  
  #endif
  