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2b778ceb | 1 | /* Copyright (C) 1995-2021 Free Software Foundation, Inc. |
478b92f0 | 2 | This file is part of the GNU C Library. |
d2f5be2a | 3 | |
478b92f0 | 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. | |
d2f5be2a | 8 | |
478b92f0 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. |
d2f5be2a | 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/>. */ |
d2f5be2a UD |
17 | |
18 | #include <errno.h> | |
19 | #include <limits.h> | |
20 | #include <sys/time.h> | |
21 | #include <sys/timex.h> | |
01bd6251 | 22 | #include <sysdep.h> |
d2f5be2a | 23 | |
b20e47cb RM |
24 | #define MAX_SEC (INT_MAX / 1000000L - 2) |
25 | #define MIN_SEC (INT_MIN / 1000000L + 2) | |
d2f5be2a | 26 | |
04da832e | 27 | int |
0308077e | 28 | __adjtime64 (const struct __timeval64 *itv, struct __timeval64 *otv) |
d2f5be2a | 29 | { |
0308077e | 30 | struct __timex64 tntx; |
d2f5be2a UD |
31 | |
32 | if (itv) | |
33 | { | |
0308077e | 34 | struct __timeval64 tmp; |
d2f5be2a UD |
35 | |
36 | /* We will do some check here. */ | |
37 | tmp.tv_sec = itv->tv_sec + itv->tv_usec / 1000000L; | |
38 | tmp.tv_usec = itv->tv_usec % 1000000L; | |
39 | if (tmp.tv_sec > MAX_SEC || tmp.tv_sec < MIN_SEC) | |
2caca60d | 40 | return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); |
d2f5be2a | 41 | tntx.offset = tmp.tv_usec + tmp.tv_sec * 1000000L; |
e093c247 UD |
42 | tntx.modes = ADJ_OFFSET_SINGLESHOT; |
43 | } | |
44 | else | |
a2a76afe | 45 | tntx.modes = ADJ_OFFSET_SS_READ; |
d2f5be2a | 46 | |
0308077e | 47 | if (__glibc_unlikely (__clock_adjtime64 (CLOCK_REALTIME, &tntx) < 0)) |
a2a76afe | 48 | return -1; |
d2f5be2a UD |
49 | |
50 | if (otv) | |
51 | { | |
52 | if (tntx.offset < 0) | |
53 | { | |
54 | otv->tv_usec = -(-tntx.offset % 1000000); | |
55 | otv->tv_sec = -(-tntx.offset / 1000000); | |
56 | } | |
57 | else | |
58 | { | |
59 | otv->tv_usec = tntx.offset % 1000000; | |
60 | otv->tv_sec = tntx.offset / 1000000; | |
61 | } | |
62 | } | |
63 | return 0; | |
64 | } | |
65 | ||
0308077e LM |
66 | #if __TIMESIZE != 64 |
67 | libc_hidden_def (__adjtime64) | |
68 | ||
69 | int | |
70 | __adjtime (const struct timeval *itv, struct timeval *otv) | |
71 | { | |
75a193b7 AZ |
72 | struct __timeval64 itv64, *pitv64 = NULL; |
73 | struct __timeval64 otv64; | |
0308077e LM |
74 | int retval; |
75 | ||
75a193b7 AZ |
76 | if (itv != NULL) |
77 | { | |
78 | itv64 = valid_timeval_to_timeval64 (*itv); | |
79 | pitv64 = &itv64; | |
80 | } | |
81 | retval = __adjtime64 (pitv64, otv != NULL ? &otv64 : NULL); | |
0308077e LM |
82 | if (otv != NULL) |
83 | *otv = valid_timeval64_to_timeval (otv64); | |
84 | ||
85 | return retval; | |
86 | } | |
87 | #endif | |
88 | ||
04da832e ZW |
89 | #ifdef VERSION_adjtime |
90 | weak_alias (__adjtime, __wadjtime); | |
91 | default_symbol_version (__wadjtime, adjtime, VERSION_adjtime); | |
92 | #else | |
d2f5be2a | 93 | weak_alias (__adjtime, adjtime) |
a6e3a56a | 94 | #endif |