manyamirok break

#include <sys/mman.h>
#include <unistd.h>
#include <time.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

#define SIZE (1024 * 1024 * 100)
#define ITERS (10000)

int main(int argc, char** argv) {
    if (argc < 2) {
        fprintf(stderr, "Usage: %s file\n", argv[0]);
        return 1;
    }

    srand48(time(NULL));
    int fd = open(argv[1], O_CREAT | O_RDWR, 0600);

    char* arr = mmap(NULL, SIZE, PROT_WRITE | PROT_READ, MAP_SHARED, fd, 0);

    for (int i = 0; i < ITERS; i++) {
        fprintf(stderr, "Iteration %d\n", i);
        arr[lrand48() % SIZE] = (char) lrand48();
        fsync(fd);
    }

    munmap(arr, SIZE);

    close(fd);
}