granicus.if.org Git - strace/blob - tests/xettimeofday.c

   1 /*
   2  * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
   3  * Copyright (c) 2015-2018 The strace developers.
   4  * All rights reserved.
   5  *
   6  * SPDX-License-Identifier: GPL-2.0-or-later
   7  */
   8
   9 #include "tests.h"
  10 #include <assert.h>
  11 #include <stdio.h>
  12 #include <stdint.h>
  13 #include <unistd.h>
  14 #include <sys/time.h>
  15 #include <asm/unistd.h>
  16
  17 int
  18 main(void)
  19 {
  20         TAIL_ALLOC_OBJECT_CONST_PTR(struct timeval, tv);
  21         TAIL_ALLOC_OBJECT_CONST_PTR(struct timezone, tz);
  22
  23         if (syscall(__NR_gettimeofday, tv, NULL))
  24                 perror_msg_and_skip("gettimeofday");
  25         printf("gettimeofday({tv_sec=%lld, tv_usec=%llu}, NULL) = 0\n",
  26                (long long) tv->tv_sec,
  27                zero_extend_signed_to_ull(tv->tv_usec));
  28
  29         if (syscall(__NR_gettimeofday, tv, tz))
  30                 perror_msg_and_skip("gettimeofday");
  31         printf("gettimeofday({tv_sec=%lld, tv_usec=%llu}"
  32                ", {tz_minuteswest=%d, tz_dsttime=%d}) = 0\n",
  33                (long long) tv->tv_sec,
  34                zero_extend_signed_to_ull(tv->tv_usec),
  35                tz->tz_minuteswest, tz->tz_dsttime);
  36
  37         tv->tv_sec = -1;
  38         tv->tv_usec = 1000000;
  39         assert(syscall(__NR_settimeofday, tv, tz) == -1);
  40         printf("settimeofday({tv_sec=%lld, tv_usec=%llu}"
  41                ", {tz_minuteswest=%d, tz_dsttime=%d}) = %s\n",
  42                (long long) tv->tv_sec,
  43                zero_extend_signed_to_ull(tv->tv_usec),
  44                tz->tz_minuteswest, tz->tz_dsttime, sprintrc(-1));
  45
  46         tv->tv_sec = 0xdeadbeefU;
  47         tv->tv_usec = 0xfacefeedU;
  48         assert(syscall(__NR_settimeofday, tv, tz) == -1);
  49         printf("settimeofday({tv_sec=%lld, tv_usec=%llu}"
  50                ", {tz_minuteswest=%d, tz_dsttime=%d}) = %s\n",
  51                (long long) tv->tv_sec,
  52                zero_extend_signed_to_ull(tv->tv_usec),
  53                tz->tz_minuteswest, tz->tz_dsttime, sprintrc(-1));
  54
  55         tv->tv_sec = (time_t) 0xcafef00ddeadbeefLL;
  56         tv->tv_usec = (suseconds_t) 0xbadc0dedfacefeedLL;
  57         assert(syscall(__NR_settimeofday, tv, tz) == -1);
  58         printf("settimeofday({tv_sec=%lld, tv_usec=%llu}"
  59                ", {tz_minuteswest=%d, tz_dsttime=%d}) = %s\n",
  60                (long long) tv->tv_sec,
  61                zero_extend_signed_to_ull(tv->tv_usec),
  62                tz->tz_minuteswest, tz->tz_dsttime, sprintrc(-1));
  63
  64         puts("+++ exited with 0 +++");
  65         return 0;
  66 }