Blame sysdeps/mach/adjtime.c

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/* Copyright (C) 1991-2018 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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   The GNU C Library is free software; you can redistribute it and/or
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   modify it under the terms of the GNU Lesser General Public
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   License as published by the Free Software Foundation; either
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   version 2.1 of the License, or (at your option) any later version.
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   The GNU C Library is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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   Lesser General Public License for more details.
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   You should have received a copy of the GNU Lesser General Public
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   License along with the GNU C Library; if not, see
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   <http://www.gnu.org/licenses/>.  */
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#include <errno.h>
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#include <sys/time.h>
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#include <hurd.h>
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/* Adjust the current time of day by the amount in DELTA.
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   If OLDDELTA is not NULL, it is filled in with the amount
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   of time adjustment remaining to be done from the last `__adjtime' call.
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   This call is restricted to the super-user.  */
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int
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__adjtime (const struct timeval *delta, struct timeval *olddelta)
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{
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  error_t err;
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  mach_port_t hostpriv;
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  hostpriv = __pid2task (-1);
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  if (hostpriv == MACH_PORT_NULL)
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    return -1;
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  err = __host_adjust_time (hostpriv, delta, olddelta);
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  __mach_port_deallocate (__mach_task_self (), hostpriv);
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  if (err)
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    return __hurd_fail (err);
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  return 0;
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}
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weak_alias (__adjtime, adjtime)