1  /* Copyright (C) 1999-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #define ntp_gettime ntp_gettime_redirect
      19  
      20  #include <time.h>
      21  #include <sys/timex.h>
      22  
      23  #undef ntp_gettime
      24  
      25  #ifndef MOD_OFFSET
      26  # define modes mode
      27  #endif
      28  
      29  /* glibc 2.12 added the 'tai' field to follow along the kernel, but it did
      30     not add a compatibility symbol, instead it added __ntp_gettimex.  However
      31     ntptimeval was still used in both cases, so to keep compatibility it
      32     can not set all the new field.  */
      33  
      34  /* clock_adjtime64 with CLOCK_REALTIME does not trigger EINVAL,
      35     ENODEV, or EOPNOTSUPP.  It might still trigger EPERM.  */
      36  
      37  int
      38  __ntp_gettime64 (struct __ntptimeval64 *ntv)
      39  {
      40    struct __timex64 tntx;
      41    int result;
      42  
      43    tntx.modes = 0;
      44    result = __clock_adjtime64 (CLOCK_REALTIME, &tntx);
      45    ntv->time = tntx.time;
      46    ntv->maxerror = tntx.maxerror;
      47    ntv->esterror = tntx.esterror;
      48  
      49    return result;
      50  }
      51  
      52  #if __TIMESIZE != 64
      53  libc_hidden_def (__ntp_gettime64)
      54  
      55  int
      56  __ntp_gettime (struct ntptimeval *ntv)
      57  {
      58    struct __ntptimeval64 ntv64;
      59    int result;
      60  
      61    result = __ntp_gettime64 (&ntv64);
      62    ntv->time = valid_timeval64_to_timeval (ntv64.time);
      63    ntv->maxerror = ntv64.maxerror;
      64    ntv->esterror = ntv64.esterror;
      65  
      66    return result;
      67  }
      68  #endif
      69  strong_alias (__ntp_gettime, ntp_gettime)