Function dfs_file_lock

components/dfs/dfs_v2/src/dfs.c:196–211

* @brief Lock the file descriptor table mutex * * @return rt_err_t RT_EOK if lock acquired successfully, * -RT_ENOSYS if filesystem not initialized, * -RT_EBUSY if mutex is already locked (retries until acquired) * * @note This function will block indefinitely until the lock is acquired. * Should not be called from interrupt service routines. */

 *       Should not be called from interrupt service routines.
 */
rt_err_t dfs_file_lock(void)
{
    rt_err_t result = -RT_EBUSY;

    if (!_dfs_init_ok)
    {
        return -RT_ENOSYS;
    }

    while (result == -RT_EBUSY)
    {
        result = rt_mutex_take(&fdlock, RT_WAITING_FOREVER);
    }

    return result;
}

/**
 * @brief Unlock the file descriptor table mutex