/* Copyright (C) 1991-2020 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#include <errno.h>
#include <time.h>
#include <hurd.h>
#include <hurd/port.h>
#include <shlib-compat.h>

/* Set the current time of day.
   This call is restricted to the super-user.  */
int
__clock_settime (clockid_t clock_id, const struct timespec *ts)
{
  error_t err;
  mach_port_t hostpriv;
  time_value_t tv;

  if (clock_id != CLOCK_REALTIME
      || ! valid_nanoseconds (ts->tv_nsec))
    return __hurd_fail (EINVAL);

  err = __get_privileged_ports (&hostpriv, NULL);
  if (err)
    return __hurd_fail (EPERM);

  TIMESPEC_TO_TIME_VALUE (&tv, ts);
  err = __host_set_time (hostpriv, tv);
  __mach_port_deallocate (__mach_task_self (), hostpriv);

  return __hurd_fail (err);
}
libc_hidden_def (__clock_settime)

versioned_symbol (libc, __clock_settime, clock_settime, GLIBC_2_17);
/* clock_settime moved to libc in version 2.17;
   old binaries may expect the symbol version it had in librt.  */
#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
strong_alias (__clock_settime, __clock_settime_2);
compat_symbol (libc, __clock_settime_2, clock_settime, GLIBC_2_2);
#endif