platform_state* platform;

//

static uint64_t
GenRandom64()
{
    uint64_t buf;
    ssize_t got = getrandom(&buf, sizeof(buf), 0);
    ASSERT(got == sizeof(buf));
    return buf;
}

static auto EnsureSigchldReaper() -> bool
{
    static bool installed = false;
    if (installed)
        return true;

    struct sigaction sa;
    sa.sa_handler = [](int signum) -> void {
        pid_t pid;
        int status;
        while ((pid = waitpid(-1, &status, WNOHANG)) > 0)
            ;
    };
    sigemptyset(&sa.sa_mask);
    sa.sa_flags = SA_RESTART;
    if (sigaction(SIGCHLD, &sa, nullptr) == -1) {
        LOG("sigaction failed");
        return false;
    }

    installed = true;
    return true;
}

static bool
Spawn(char** cmd, uint32_t cmdSize)
{
    if (!EnsureSigchldReaper())
        return false;

    if (cmdSize <= 1)
        return false;
    if (cmd[cmdSize - 1] != nullptr)
        return false;

    switch (fork()) {
        case -1:
            return false;
        case 0:
            break;
        default:
            return true;
    }

    int devNullFd = open("/dev/null", O_RDWR);
    if (devNullFd != -1) {
        dup2(devNullFd, STDIN_FILENO);
        dup2(devNullFd, STDOUT_FILENO);
        dup2(devNullFd, STDERR_FILENO);
    }

    if (close_range(3, ~0U, CLOSE_RANGE_UNSHARE) != 0) {
        goto failure;
    }

    execvp(cmd[0], cmd);

    failure:
        _exit(127);
}

//


void PlatformTearDown()
{
}