1  /*
       2   * Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
       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  
      11  #include <stdio.h>
      12  #include "test_nlattr.h"
      13  #include <linux/if_addrlabel.h>
      14  #include <linux/rtnetlink.h>
      15  
      16  static void
      17  init_ifaddrlblmsg(struct nlmsghdr *const nlh, const unsigned int msg_len)
      18  {
      19  	SET_STRUCT(struct nlmsghdr, nlh,
      20  		.nlmsg_len = msg_len,
      21  		.nlmsg_type = RTM_GETADDRLABEL,
      22  		.nlmsg_flags = NLM_F_DUMP
      23  	);
      24  
      25  	struct ifaddrlblmsg *const msg = NLMSG_DATA(nlh);
      26  	SET_STRUCT(struct ifaddrlblmsg, msg,
      27  		.ifal_family = AF_UNIX,
      28  		.ifal_index = ifindex_lo()
      29  	);
      30  }
      31  
      32  static void
      33  print_ifaddrlblmsg(const unsigned int msg_len)
      34  {
      35  	printf("{nlmsg_len=%u, nlmsg_type=RTM_GETADDRLABEL"
      36  	       ", nlmsg_flags=NLM_F_DUMP, nlmsg_seq=0, nlmsg_pid=0}"
      37  	       ", {ifal_family=AF_UNIX, ifal_prefixlen=0, ifal_flags=0"
      38  	       ", ifal_index=" IFINDEX_LO_STR
      39  	       ", ifal_seq=0}",
      40  	       msg_len);
      41  }
      42  
      43  int
      44  main(void)
      45  {
      46  	skip_if_unavailable("/proc/self/fd/");
      47  
      48  	const int fd = create_nl_socket(NETLINK_ROUTE);
      49  	const unsigned int hdrlen = sizeof(struct ifaddrlblmsg);
      50  	void *nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen), NLA_HDRLEN + 4);
      51  
      52  	static char pattern[4096];
      53  	fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
      54  
      55  	const unsigned int nla_type = 0xffff & NLA_TYPE_MASK;
      56  	char nla_type_str[256];
      57  	sprintf(nla_type_str, "%#x /* IFAL_??? */", nla_type);
      58  	TEST_NLATTR_(fd, nlh0, hdrlen,
      59  		     init_ifaddrlblmsg, print_ifaddrlblmsg,
      60  		     nla_type, nla_type_str,
      61  		     4, pattern, 4,
      62  		     print_quoted_hex(pattern, 4));
      63  
      64  	TEST_NLATTR(fd, nlh0, hdrlen,
      65  		    init_ifaddrlblmsg, print_ifaddrlblmsg,
      66  		    IFAL_ADDRESS, 4, pattern, 4,
      67  		    print_quoted_hex(pattern, 4));
      68  
      69  	puts("+++ exited with 0 +++");
      70  	return 0;
      71  }