#define _GNU_SOURCE

#include <stddef.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <time.h>
#include <unistd.h>

static const time_t FIXED_TIME = 0;

time_t time(time_t *result)
{
    if (result != NULL) {
        *result = FIXED_TIME;
    }
    return FIXED_TIME;
}

int gettimeofday(struct timeval *value, void *timezone)
{
    (void)timezone;
    if (value != NULL) {
        value->tv_sec = FIXED_TIME;
        value->tv_usec = 0;
    }
    return 0;
}

int clock_gettime(clockid_t clock_id, struct timespec *value)
{
    if (clock_id == CLOCK_REALTIME) {
        value->tv_sec = FIXED_TIME;
        value->tv_nsec = 0;
        return 0;
    }
    return (int)syscall(SYS_clock_gettime, clock_id, value);
}