#include <assert.h>
#include <stdio.h>
#include <stdlib.h>

static FILE* randfp = nullptr;

void close_randfp()
{
    fclose(randfp);
}

extern "C"
{
    int rand() // FIXME: This function is a dirty and extremely hacky way to get going, /dev/random should only be used
               // for initial seeding, userspace should do their own random calculations.
    {
        if (!randfp)
        {
            randfp = fopen("/dev/random", "rw");
            assert(randfp != nullptr);
            atexit(close_randfp);
        }
        int result;
        fread(&result, sizeof(result), 1, randfp);
        if (ferror(randfp))
        {
            perror("read(randfp)");
            abort();
        }
        return result;
    }

    void srand(unsigned int)
    {
        return;
    }
}