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53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
/* Copyright (C) 1991-2017 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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struct timeval dummy;
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err = __get_privileged_ports (&hostpriv, NULL);
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if (err)
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return __hurd_fail (EPERM);
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if (olddelta == NULL)
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olddelta = &dummy;
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err = __host_adjust_time (hostpriv,
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/* `time_value_t' and `struct timeval' are in
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fact identical with the names changed. */
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*(time_value_t *) delta,
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(time_value_t *) 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)
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