1  /*
       2   * Check decoding of timerfd_create, timerfd_gettime, and timerfd_settime
       3   * syscalls.
       4   *
       5   * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@strace.io>
       6   * Copyright (c) 2015-2023 The strace developers.
       7   * All rights reserved.
       8   *
       9   * SPDX-License-Identifier: GPL-2.0-or-later
      10   */
      11  
      12  #include "tests.h"
      13  #include "scno.h"
      14  
      15  #if defined __NR_timerfd_gettime \
      16   && defined __NR_timerfd_settime
      17  
      18  # include <stdio.h>
      19  # include <stdint.h>
      20  # include <time.h>
      21  # include <unistd.h>
      22  # include "kernel_fcntl.h"
      23  
      24  int
      25  main(void)
      26  {
      27  	(void) close(0);
      28  	if (syscall(__NR_timerfd_create, CLOCK_MONOTONIC, O_CLOEXEC | O_NONBLOCK))
      29  		perror_msg_and_skip("timerfd_create");
      30  	puts("timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC|TFD_NONBLOCK) = 0");
      31  
      32  	TAIL_ALLOC_OBJECT_CONST_PTR(struct itimerspec, its_new);
      33  	TAIL_ALLOC_OBJECT_CONST_PTR(struct itimerspec, its_old);
      34  
      35  	its_new->it_interval.tv_sec = 0xdeadbeefU;
      36  	its_new->it_interval.tv_nsec = 0xfacefeedU;
      37  	its_new->it_value.tv_sec =
      38  		(typeof(its_new->it_value.tv_sec)) 0xcafef00ddeadbeefLL;
      39  	its_new->it_value.tv_nsec = (long) 0xbadc0dedfacefeedLL;
      40  
      41  	long rc = syscall(__NR_timerfd_settime, 0, 0, its_new, its_old);
      42  	printf("timerfd_settime(0, 0"
      43  	       ", {it_interval={tv_sec=%lld, tv_nsec=%llu}"
      44  	       ", it_value={tv_sec=%lld, tv_nsec=%llu}}, %p) = %s\n",
      45  	       (long long) its_new->it_interval.tv_sec,
      46  	       zero_extend_signed_to_ull(its_new->it_interval.tv_nsec),
      47  	       (long long) its_new->it_value.tv_sec,
      48  	       zero_extend_signed_to_ull(its_new->it_value.tv_nsec),
      49  	       its_old, sprintrc(rc));
      50  
      51  	its_new->it_interval.tv_sec = 0xdeface1;
      52  	its_new->it_interval.tv_nsec = 0xdeface2;
      53  	its_new->it_value.tv_sec = 0xdeface3;
      54  	its_new->it_value.tv_nsec = 0xdeface4;
      55  	its_old->it_interval.tv_sec = 0xdeface5;
      56  	its_old->it_interval.tv_nsec = 0xdeface6;
      57  	its_old->it_value.tv_sec = 0xdeface7;
      58  	its_old->it_value.tv_nsec = 0xdeface8;
      59  
      60  	if (syscall(__NR_timerfd_settime, 0, 0, its_new, its_old))
      61  		perror_msg_and_skip("timerfd_settime");
      62  	printf("timerfd_settime(0, 0"
      63  	       ", {it_interval={tv_sec=%lld, tv_nsec=%llu}"
      64  	       ", it_value={tv_sec=%lld, tv_nsec=%llu}}"
      65  	       ", {it_interval={tv_sec=%lld, tv_nsec=%llu}"
      66  	       ", it_value={tv_sec=%lld, tv_nsec=%llu}}"
      67  	       ") = 0\n",
      68  	       (long long) its_new->it_interval.tv_sec,
      69  	       zero_extend_signed_to_ull(its_new->it_interval.tv_nsec),
      70  	       (long long) its_new->it_value.tv_sec,
      71  	       zero_extend_signed_to_ull(its_new->it_value.tv_nsec),
      72  	       (long long) its_old->it_interval.tv_sec,
      73  	       zero_extend_signed_to_ull(its_old->it_interval.tv_nsec),
      74  	       (long long) its_old->it_value.tv_sec,
      75  	       zero_extend_signed_to_ull(its_old->it_value.tv_nsec));
      76  
      77  	if (syscall(__NR_timerfd_gettime, 0, its_old))
      78  		perror_msg_and_skip("timerfd_gettime");
      79  	printf("timerfd_gettime(0"
      80  	       ", {it_interval={tv_sec=%lld, tv_nsec=%llu}"
      81  	       ", it_value={tv_sec=%lld, tv_nsec=%llu}}) = 0\n",
      82  	       (long long) its_old->it_interval.tv_sec,
      83  	       zero_extend_signed_to_ull(its_old->it_interval.tv_nsec),
      84  	       (long long) its_old->it_value.tv_sec,
      85  	       zero_extend_signed_to_ull(its_old->it_value.tv_nsec));
      86  
      87  	puts("+++ exited with 0 +++");
      88  	return 0;
      89  }
      90  
      91  #else
      92  
      93  SKIP_MAIN_UNDEFINED("__NR_timerfd_gettime && __NR_timerfd_settime")
      94  
      95  #endif