1  /*
       2   * Check decoding of sockaddr related arguments of recvfrom syscall.
       3   *
       4   * Copyright (c) 2016-2021 Dmitry V. Levin <ldv@strace.io>
       5   * All rights reserved.
       6   *
       7   * SPDX-License-Identifier: GPL-2.0-or-later
       8   */
       9  
      10  #define TEST_SYSCALL_NAME recvfrom
      11  #define TEST_SYSCALL_PREPARE send_un()
      12  #define PREFIX_S_ARGS	, recv_buf, 1, 0
      13  #define PREFIX_S_STR	", \"A\", 1, 0"
      14  #define PREFIX_F_ARGS	, 0, 1, 0
      15  #define PREFIX_F_STR	", NULL, 1, 0"
      16  static void send_un(void);
      17  static char recv_buf[1];
      18  #include "sockname.c"
      19  
      20  static int cfd;
      21  
      22  static void
      23  send_un(void)
      24  {
      25  	if (send(cfd, "A", 1, 0) != 1)
      26  		perror_msg_and_skip("send");
      27  }
      28  
      29  int
      30  main(void)
      31  {
      32  	cfd = socket(AF_UNIX, SOCK_STREAM, 0);
      33  	int lfd = socket(AF_UNIX, SOCK_STREAM, 0);
      34  	if (cfd < 0 || lfd < 0)
      35  		perror_msg_and_skip("socket");
      36  
      37  	struct sockaddr_un un = {
      38  		.sun_family = AF_UNIX,
      39  		.sun_path = TEST_SOCKET ".send"
      40  	};
      41  
      42  	(void) unlink(un.sun_path);
      43  	if (bind(cfd, (const void *) &un, sizeof(un)))
      44  		perror_msg_and_skip("bind");
      45  	(void) unlink(un.sun_path);
      46  
      47  	un.sun_path[sizeof(TEST_SOCKET) - 1] = '\0';
      48  	(void) unlink(un.sun_path);
      49  
      50  	if (bind(lfd, (const void *) &un, sizeof(un)))
      51  		perror_msg_and_skip("bind");
      52  
      53  	if (listen(lfd, 1))
      54  		perror_msg_and_skip("listen");
      55  
      56  	if (connect(cfd, (const void *) &un, sizeof(un)))
      57  		perror_msg_and_skip("connect");
      58  
      59  	int afd = accept(lfd, 0, 0);
      60  	if (afd < 0)
      61  		perror_msg_and_skip("accept");
      62  
      63  	(void) unlink(un.sun_path);
      64  
      65  	test_sockname_syscall(afd);
      66  
      67  	puts("+++ exited with 0 +++");
      68  	return 0;
      69  }