Function dfs_file_flush

components/dfs/dfs_v2/src/dfs_file.c:2264–2298

* @brief Flush file buffers to storage device * * This function forces any buffered data to be written to the underlying storage device. * * @param[in,out] file Pointer to the file structure to flush (both input and output) * * @return int Operation result: * - 0 on success * -EBADF if invalid file descriptor * -ENOSYS if flush operation not supported * -E

 * @note If RT_USING_PAGECACHE is enabled, the page cache will be flushed first
 */
int dfs_file_flush(struct dfs_file *file)
{
    int ret = 0;

    if (file)
    {
        if (file->fops->flush)
        {
            if (dfs_is_mounted(file->vnode->mnt) == 0)
            {
#ifdef RT_USING_PAGECACHE
                if (file->vnode->aspace)
                {
                    dfs_aspace_flush(file->vnode->aspace);
                }
#endif
                ret = file->fops->flush(file);
            }
            else
            {
                ret = -EINVAL;
            }
        }
        else
        {
            ret = -ENOSYS;
        }
    }
    else
    {
        ret = -EBADF;
    }

    return ret;
}

/**
 * @brief Read directory entries