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Commit | Line | Data |
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320054e8 DG |
1 | #define _GNU_SOURCE |
2 | #include <sys/time.h> | |
3 | #include <sys/timex.h> | |
4 | #include <errno.h> | |
5 | #include "syscall.h" | |
6 | ||
7 | int adjtime(const struct timeval *in, struct timeval *out) | |
8 | { | |
9 | struct timex tx = { 0 }; | |
10 | if (in) { | |
11 | if (in->tv_sec > 1000 || in->tv_usec > 1000000000) { | |
12 | errno = EINVAL; | |
13 | return -1; | |
14 | } | |
15 | tx.offset = in->tv_sec*1000000 + in->tv_usec; | |
16 | tx.modes = ADJ_OFFSET_SINGLESHOT; | |
17 | } | |
79a9b408 | 18 | if (adjtimex(&tx) < 0) return -1; |
320054e8 DG |
19 | if (out) { |
20 | out->tv_sec = tx.offset / 1000000; | |
21 | if ((out->tv_usec = tx.offset % 1000000) < 0) { | |
22 | out->tv_sec--; | |
23 | out->tv_usec += 1000000; | |
24 | } | |
25 | } | |
26 | return 0; | |
27 | } |