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f7a9f785 | 1 | /* Copyright (C) 1995-2016 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 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://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> | |
22 | ||
b20e47cb RM |
23 | #define MAX_SEC (INT_MAX / 1000000L - 2) |
24 | #define MIN_SEC (INT_MIN / 1000000L + 2) | |
d2f5be2a | 25 | |
a6e3a56a UD |
26 | #ifndef MOD_OFFSET |
27 | #define modes mode | |
28 | #endif | |
29 | ||
30 | #ifndef TIMEVAL | |
31 | #define TIMEVAL timeval | |
32 | #endif | |
33 | ||
34 | #ifndef TIMEX | |
35 | #define TIMEX timex | |
36 | #endif | |
37 | ||
38 | #ifndef ADJTIME | |
39 | #define ADJTIME __adjtime | |
40 | #endif | |
41 | ||
42 | #ifndef ADJTIMEX | |
43 | #define NO_LOCAL_ADJTIME | |
620f462e | 44 | #define ADJTIMEX(x) __adjtimex (x) |
a6e3a56a UD |
45 | #endif |
46 | ||
47 | #ifndef LINKAGE | |
48 | #define LINKAGE | |
49 | #endif | |
50 | ||
51 | LINKAGE int | |
6539c1ad | 52 | ADJTIME (const struct TIMEVAL *itv, struct TIMEVAL *otv) |
d2f5be2a | 53 | { |
a6e3a56a | 54 | struct TIMEX tntx; |
d2f5be2a UD |
55 | |
56 | if (itv) | |
57 | { | |
a6e3a56a | 58 | struct TIMEVAL tmp; |
d2f5be2a UD |
59 | |
60 | /* We will do some check here. */ | |
61 | tmp.tv_sec = itv->tv_sec + itv->tv_usec / 1000000L; | |
62 | tmp.tv_usec = itv->tv_usec % 1000000L; | |
63 | if (tmp.tv_sec > MAX_SEC || tmp.tv_sec < MIN_SEC) | |
2caca60d | 64 | return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); |
d2f5be2a | 65 | tntx.offset = tmp.tv_usec + tmp.tv_sec * 1000000L; |
e093c247 UD |
66 | tntx.modes = ADJ_OFFSET_SINGLESHOT; |
67 | } | |
68 | else | |
a2a76afe | 69 | tntx.modes = ADJ_OFFSET_SS_READ; |
d2f5be2a | 70 | |
a1ffb40e | 71 | if (__glibc_unlikely (ADJTIMEX (&tntx) < 0)) |
a2a76afe | 72 | return -1; |
d2f5be2a UD |
73 | |
74 | if (otv) | |
75 | { | |
76 | if (tntx.offset < 0) | |
77 | { | |
78 | otv->tv_usec = -(-tntx.offset % 1000000); | |
79 | otv->tv_sec = -(-tntx.offset / 1000000); | |
80 | } | |
81 | else | |
82 | { | |
83 | otv->tv_usec = tntx.offset % 1000000; | |
84 | otv->tv_sec = tntx.offset / 1000000; | |
85 | } | |
86 | } | |
87 | return 0; | |
88 | } | |
89 | ||
a6e3a56a | 90 | #ifdef NO_LOCAL_ADJTIME |
d2f5be2a | 91 | weak_alias (__adjtime, adjtime) |
a6e3a56a | 92 | #endif |