Function sys_channel_open

components/lwp/lwp_syscall.c:4065–4094

* @brief Opens a communication channel. * * This system call is used to open a communication channel with a specified name and set of flags. * The channel allows for inter-process or inter-thread communication, depending on the underlying system. * The `name` parameter specifies the name of the channel, while the `flags` parameter allows * configuration of the channel's behavior (e.g., read/w

 *          as improper configuration might lead to access issues, data loss, or undefined behavior.
 */
sysret_t sys_channel_open(const char *name, int flags)
{
    rt_size_t ret = 0;
    char *kname = RT_NULL;
    int len = 0;

    len = lwp_user_strlen(name);
    if (len <= 0)
    {
        return -EFAULT;
    }

    kname = (char *)kmem_get(len + 1);
    if (!kname)
    {
        return -ENOMEM;
    }

    if (lwp_get_from_user(kname, (void *)name, len + 1) != (len + 1))
    {
        kmem_put(kname);
        return -EFAULT;
    }

    ret = lwp_channel_open(FDT_TYPE_LWP, kname, flags);

    kmem_put(kname);

    return ret;
}

/**
 * @brief Closes an open communication channel.