musl - musl - an implementation of the standard library for Linux-based systems

diff --git a/src/linux/adjtime.c b/src/linux/adjtime.c
new file mode 100644
index 00000000..fa8af9f0
--- /dev/null
+++ b/src/linux/adjtime.c

@@ -0,0 +1,27 @@

+#define _GNU_SOURCE

+#include <sys/time.h>

+#include <sys/timex.h>

+#include <errno.h>

+#include "syscall.h"

+

+int adjtime(const struct timeval *in, struct timeval *out)

+{

+ struct timex tx = { 0 };

+ if (in) {

+ if (in->tv_sec > 1000 || in->tv_usec > 1000000000) {

+ errno = EINVAL;

+ return -1;

+ }

+ tx.offset = in->tv_sec*1000000 + in->tv_usec;

+ tx.modes = ADJ_OFFSET_SINGLESHOT;

+ }

+ if (syscall(SYS_adjtimex, &tx) < 0) return -1;

+ if (out) {

+ out->tv_sec = tx.offset / 1000000;

+ if ((out->tv_usec = tx.offset % 1000000) < 0) {

+ out->tv_sec--;

+ out->tv_usec += 1000000;

+ }

+ }

+ return 0;

+}