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2b778ceb | 1 | /* Copyright (C) 1991-2021 Free Software Foundation, Inc. |
ebbad4cc | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
ebbad4cc | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
28f540f4 | 8 | |
ebbad4cc UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
28f540f4 | 17 | |
28f540f4 RM |
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. */ | |
26 | int | |
bd2260a2 | 27 | __adjtime (const struct timeval *delta, struct timeval *olddelta) |
28f540f4 RM |
28 | { |
29 | error_t err; | |
5017b2c8 | 30 | mach_port_t hostpriv; |
aaf30454 | 31 | struct timeval dummy; |
28f540f4 | 32 | |
5017b2c8 RM |
33 | err = __get_privileged_ports (&hostpriv, NULL); |
34 | if (err) | |
35 | return __hurd_fail (EPERM); | |
28f540f4 | 36 | |
aaf30454 SS |
37 | if (olddelta == NULL) |
38 | olddelta = &dummy; | |
39 | ||
28f540f4 RM |
40 | err = __host_adjust_time (hostpriv, |
41 | /* `time_value_t' and `struct timeval' are in | |
42 | fact identical with the names changed. */ | |
43 | *(time_value_t *) delta, | |
44 | (time_value_t *) olddelta); | |
45 | __mach_port_deallocate (__mach_task_self (), hostpriv); | |
46 | ||
47 | if (err) | |
48 | return __hurd_fail (err); | |
49 | return 0; | |
50 | } | |
51 | ||
52 | weak_alias (__adjtime, adjtime) |