Function sys_socketpair

components/lwp/lwp_syscall.c:6255–6277

* @brief Creates a pair of connected sockets. * * This system call creates two connected sockets that can be used for bidirectional communication * between processes or threads. The sockets are returned as file descriptors in the `fd` array. * * @param[in] domain Specifies the protocol family to be used for the sockets. Common values include: * - `AF_UNIX`: Local commu

 * @see sys_socket(), sys_close()
 */
sysret_t sys_socketpair(int domain, int type, int protocol, int fd[2])
{
#ifdef RT_USING_SAL
    int ret = 0;
    int k_fd[2];

    if (!lwp_user_accessable((void *)fd, sizeof(int [2])))
    {
        return -EFAULT;
    }

    ret = socketpair(domain, type, protocol, k_fd);

    if (ret == 0)
    {
        lwp_put_to_user(fd, k_fd, sizeof(int [2]));
    }

    return ret;
#else
    return -ELIBACC;
#endif
}

/**
 * @brief Closes an open socket.