38 lines
966 B
C
38 lines
966 B
C
#include <sys/cdefs.h>
|
|
#include <lib.h>
|
|
#include "namespace.h"
|
|
|
|
#include <string.h>
|
|
#include <sys/time.h>
|
|
#include <time.h>
|
|
|
|
#ifdef __weak_alias
|
|
__weak_alias(adjtime, __adjtime50);
|
|
#endif
|
|
|
|
int adjtime(const struct timeval *delta, struct timeval *olddelta)
|
|
{
|
|
message m;
|
|
|
|
memset(&m, 0, sizeof(m));
|
|
m.PM_TIME_CLK_ID = (clockid_t) CLOCK_REALTIME;
|
|
m.PM_TIME_NOW = 0; /* use adjtime() method to slowly adjust the clock. */
|
|
m.PM_TIME_SEC = delta->tv_sec;
|
|
m.PM_TIME_NSEC = delta->tv_usec * 1000; /* convert usec to nsec */
|
|
|
|
if (_syscall(PM_PROC_NR, PM_CLOCK_SETTIME, &m) < 0)
|
|
return -1;
|
|
|
|
if (olddelta != NULL) {
|
|
/* the kernel returns immediately and the adjustment happens in the
|
|
* background. Also, any currently running adjustment is stopped by
|
|
* another call to adjtime(2), so the only values possible on Minix
|
|
* for olddelta are those of delta.
|
|
*/
|
|
olddelta->tv_sec = delta->tv_sec;
|
|
olddelta->tv_usec = delta->tv_usec;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|