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1/* Copyright (C) 1991-2019 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 <http://www.gnu.org/licenses/>. */
17
18#include <errno.h>
19#include <sys/time.h>
20#include <hurd.h>
21
22/* Adjust the current time of day by the amount in DELTA.
23 If OLDDELTA is not NULL, it is filled in with the amount
24 of time adjustment remaining to be done from the last `__adjtime' call.
25 This call is restricted to the super-user. */
26int
27__adjtime (const struct timeval *delta, struct timeval *olddelta)
28{
29 error_t err;
30 mach_port_t hostpriv;
31
32 hostpriv = __pid2task (-1);
33 if (hostpriv == MACH_PORT_NULL)
34 return -1;
35 err = __host_adjust_time (hostpriv, delta, olddelta);
36 __mach_port_deallocate (__mach_task_self (), hostpriv);
37 if (err)
38 return __hurd_fail (err);
39 return 0;
40}
41
42weak_alias (__adjtime, adjtime)
43

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