1  /*
       2   * Check decoding of timeout argument of recvmmsg syscall.
       3   *
       4   * Copyright (c) 2016 Dmitry V. Levin <ldv@strace.io>
       5   * Copyright (c) 2016-2023 The strace developers.
       6   * All rights reserved.
       7   *
       8   * SPDX-License-Identifier: GPL-2.0-or-later
       9   */
      10  
      11  #include "tests.h"
      12  #include <stdio.h>
      13  
      14  #include "msghdr.h"
      15  
      16  int
      17  main(void)
      18  {
      19  	int fds[2];
      20  	if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds))
      21  		perror_msg_and_skip("socketpair");
      22  
      23  	if (send(fds[1], "A", 1, 0) != 1)
      24  		perror_msg_and_skip("send");
      25  
      26  	char buf;
      27  	struct iovec iov = { .iov_base = &buf, .iov_len = sizeof(buf) };
      28  	struct mmsghdr mh = {
      29  		.msg_hdr = {
      30  			.msg_iov = &iov,
      31  			.msg_iovlen = 1
      32  		}
      33  	};
      34  	TAIL_ALLOC_OBJECT_CONST_PTR(kernel_old_timespec_t, ts);
      35  	ts->tv_sec = 0;
      36  	ts->tv_nsec = 12345678;
      37  
      38  	int rc = recv_mmsg(-1, &mh, 1, 0, ts);
      39  	printf("recvmmsg(-1, %p, 1, 0, {tv_sec=0, tv_nsec=12345678})"
      40  	       " = %s\n", &mh, sprintrc(rc));
      41  
      42  	rc = recv_mmsg(fds[0], &mh, 1, 0, ts);
      43  	if (rc < 0)
      44  		perror_msg_and_skip("recvmmsg");
      45  	printf("recvmmsg(%d, [{msg_hdr={msg_name=NULL, msg_namelen=0"
      46  	       ", msg_iov=[{iov_base=\"A\", iov_len=1}], msg_iovlen=1"
      47  	       ", msg_controllen=0, msg_flags=0}, msg_len=1}], 1, 0"
      48  	       ", {tv_sec=0, tv_nsec=12345678}) = "
      49  	       "%d (left {tv_sec=0, tv_nsec=%d})\n",
      50  	       fds[0], rc, (int) ts->tv_nsec);
      51  
      52  	ts->tv_sec = 0xdeadbeefU;
      53  	ts->tv_nsec = 0xfacefeedU;
      54  
      55  	rc = recv_mmsg(fds[0], &mh, 1, 0, ts);
      56  	printf("recvmmsg(%d, %p, 1, 0, {tv_sec=%lld, tv_nsec=%llu}) = %s\n",
      57  	       fds[0], &mh, (long long) ts->tv_sec,
      58  	       zero_extend_signed_to_ull(ts->tv_nsec), sprintrc(rc));
      59  
      60  	ts->tv_sec = (time_t) 0xcafef00ddeadbeefLL;
      61  	ts->tv_nsec = (long) 0xbadc0dedfacefeedLL;
      62  
      63  	rc = recv_mmsg(fds[0], &mh, 1, 0, ts);
      64  	printf("recvmmsg(%d, %p, 1, 0, {tv_sec=%lld, tv_nsec=%llu}) = %s\n",
      65  	       fds[0], &mh, (long long) ts->tv_sec,
      66  	       zero_extend_signed_to_ull(ts->tv_nsec), sprintrc(rc));
      67  
      68  	puts("+++ exited with 0 +++");
      69  	return 0;
      70  }