#include <bits/errno-return.h>
#include <sys/syscall.h>
#include <time.h>
#include <unistd.h>

extern "C"
{
    int clock_gettime(clockid_t id, struct timespec* ts)
    {
        long rc = syscall(SYS_clock_gettime, id, ts);
        __errno_return(rc, int);
    }

    time_t time(time_t* tp)
    {
        struct timespec ts;
        if (clock_gettime(CLOCK_REALTIME, &ts) < 0) return (time_t)-1;

        if (tp) *tp = ts.tv_sec;

        return ts.tv_sec;
    }
}