Function lwp_ptmx_init

components/lwp/terminal/tty_ptmx.c:279–309

};

rt_err_t lwp_ptmx_init(rt_device_t ptmx_device, const char *root_path)
{
    char *device_name;
    int root_len;
    const char *dev_rel_path;
    rt_err_t rc;

    root_len = strlen(root_path);
    dev_rel_path = "/ptmx";
    device_name = rt_malloc(root_len + sizeof("/ptmx"));

    if (device_name)
    {
        /* Register device */
        sprintf(device_name, "%s%s", root_path, dev_rel_path);
        rt_device_register(ptmx_device, device_name, 0);

        /* Setup fops */
        ptmx_device->fops = &ptm_fops;

        rt_free(device_name);

        rc = RT_EOK;
    }
    else
    {
        rc = -RT_ENOMEM;
    }

    return rc;
}

/* system level ptmx */
static struct rt_device sysptmx;