Function _dfs_mnt_foreach

components/dfs/dfs_v2/src/dfs_mnt.c:458–487

* @brief Recursively traverse the mount point tree and apply a callback function. * * This function performs a depth-first traversal of the mount point tree starting from the given mount point. * It applies the specified callback function to each mount point in the tree. If the callback function returns * a non-NULL pointer, the traversal stops and the result is returned immediately. * * @pa

 *         Otherwise, returns RT_NULL.
 */
static struct dfs_mnt* _dfs_mnt_foreach(struct dfs_mnt *mnt, struct dfs_mnt* (*func)(struct dfs_mnt *mnt, void *parameter), void *parameter)
{
    struct dfs_mnt *iter, *ret = NULL;

    if (mnt)
    {
        ret = func(mnt, parameter);
        if (ret == RT_NULL)
        {
            if (!rt_list_isempty(&mnt->child))
            {
                /* for each in mount point list */
                rt_list_for_each_entry(iter, &mnt->child, sibling)
                {
                    ret = _dfs_mnt_foreach(iter, func, parameter);
                    if (ret != RT_NULL)
                    {
                        break;
                    }
                }
            }
        }
    }
    else
    {
        ret = RT_NULL;
    }

    return ret;
}

/**
 * @brief Compare a mount point's device ID with a given device object.