update zh-cn/device-dev/kernel/kernel-small-bundles-fs-virtual.md.

Signed-off-by: NAustin <liaozhiqi7@huawei.com>

zh-cn/device-dev/kernel/kernel-small-bundles-fs-virtual.md

@@ -62,43 +62,43 @@ OpenHarmony内核中，VFS框架是通过在内存中的树结构来实现的，
 | 分类 | 接口**名称** | 功能 | FAT | JFFS2 | NFS | TMPFS | PROCFS | 
 | -------- | -------- | -------- | -------- | -------- | -------- | -------- | -------- |
 | 文件操作 | open | 打开文件 | √ | √ | √ | √ | √ | 
-| read/pread/readv/preadv | 读取文件 | √ | √ | √ | √ | √ | 
-| write/pwrite/writev/pwritev | 写入文件 | √ | √ | √ | √ | √ | 
-| lseek | 设置文件偏移 | √ | √ | √ | √ | × | 
-| close | 关闭文件 | √ | √ | √ | √ | √ | 
-| unlink | 删除文件 | √ | √ | √ | √ | × | 
-| fstat | 查询文件信息 | √ | √ | √ | √ | √ | 
-| fallocate | 预分配大小 | √ | × | × | × | × | 
-| truncate | 文件截断 | √ | √ | × | √ | × | 
-| link | 创建硬链接 | × | √ | × | × | × | 
-| symlink | 创建软链接 | √ | √ | × | × | × | 
-| readlink | 读取软链接 | √ | √ | × | × | × | 
-| dup | 复制文件句柄 | √ | √ | √ | √ | √ | 
-| fsync | 文件内容刷入设备 | √ | × | × | × | × | 
-| ioctl | 设备控制 | × | × | × | √ | × | 
-| fcntl | 文件控制操作 | √ | √ | √ | √ | √ | 
+| | read/pread/readv/preadv | 读取文件 | √ | √ | √ | √ | √ | 
+| | write/pwrite/writev/pwritev | 写入文件 | √ | √ | √ | √ | √ | 
+| | lseek | 设置文件偏移 | √ | √ | √ | √ | × | 
+| | close | 关闭文件 | √ | √ | √ | √ | √ | 
+| | unlink | 删除文件 | √ | √ | √ | √ | × | 
+| | fstat | 查询文件信息 | √ | √ | √ | √ | √ | 
+| | fallocate | 预分配大小 | √ | × | × | × | × | 
+| | truncate | 文件截断 | √ | √ | × | √ | × | 
+| | link | 创建硬链接 | × | √ | × | × | × | 
+| | symlink | 创建软链接 | √ | √ | × | × | × | 
+| | readlink | 读取软链接 | √ | √ | × | × | × | 
+| | dup | 复制文件句柄 | √ | √ | √ | √ | √ | 
+| | fsync | 文件内容刷入设备 | √ | × | × | × | × | 
+| | ioctl | 设备控制 | × | × | × | √ | × | 
+| | fcntl | 文件控制操作 | √ | √ | √ | √ | √ | 
 | 目录操作 | mkdir | 创建目录 | √ | √ | √ | √ | × | 
-| opendir | 打开目录 | √ | √ | √ | √ | √ | 
-| readdir | 读取目录 | √ | √ | √ | √ | √ | 
-| closedir | 关闭目录 | √ | √ | √ | √ | √ | 
-| telldir | 获取目录偏移 | √ | √ | √ | √ | √ | 
-| seekdir | 设置目录偏移 | √ | √ | √ | √ | √ | 
-| rewinddir | 重置目录偏移 | √ | √ | √ | √ | × | 
-| scandir | 读取目录数据 | √ | √ | √ | √ | √ | 
-| rmdir | 删除目录 | √ | √ | √ | √ | × | 
-| chdir | 切换当前路径 | √ | √ | √ | √ | √ | 
-| getcwd | 获取当前路径 | √ | √ | √ | √ | √ | 
-| realpath | 相对/绝对路径转换 | √ | √ | √ | √ | √ | 
-| rename | 文件/目录重命名 | √ | √ | √ | √ | × | 
-| chmod | 修改文件/目录属性 | √ | √ | × | × | × | 
-| chown | 修改文件/目录所有者 | √ | √ | × | × | × | 
-| stat/lstat | 查询文件/目录信息 | √ | √ | √ | √ | √ | 
-| access | 查询文件/目录访问权限 | √ | √ | √ | √ | √ | 
+| | opendir | 打开目录 | √ | √ | √ | √ | √ | 
+| | readdir | 读取目录 | √ | √ | √ | √ | √ | 
+| | closedir | 关闭目录 | √ | √ | √ | √ | √ | 
+| | telldir | 获取目录偏移 | √ | √ | √ | √ | √ | 
+| | seekdir | 设置目录偏移 | √ | √ | √ | √ | √ | 
+| | rewinddir | 重置目录偏移 | √ | √ | √ | √ | × | 
+| | scandir | 读取目录数据 | √ | √ | √ | √ | √ | 
+| | rmdir | 删除目录 | √ | √ | √ | √ | × | 
+| | chdir | 切换当前路径 | √ | √ | √ | √ | √ | 
+| | getcwd | 获取当前路径 | √ | √ | √ | √ | √ | 
+| | realpath | 相对/绝对路径转换 | √ | √ | √ | √ | √ | 
+| | rename | 文件/目录重命名 | √ | √ | √ | √ | × | 
+| | chmod | 修改文件/目录属性 | √ | √ | × | × | × | 
+| | chown | 修改文件/目录所有者 | √ | √ | × | × | × | 
+| | stat/lstat | 查询文件/目录信息 | √ | √ | √ | √ | √ | 
+| | access | 查询文件/目录访问权限 | √ | √ | √ | √ | √ | 
 | 分区操作 | mount | 挂载分区 | √ | √ | √ | √ | √ | 
-| umount | 卸载分区 | √ | √ | √ | √ | × | 
-| statfs | 查询挂载分区信息 | √ | √ | √ | √ | √ | 
-| format | 格式化分区 | √ | × | × | × | × | 
-| sync | 分区内容刷入设备 | √ | × | × | × | × | 
+| | umount | 卸载分区 | √ | √ | √ | √ | × | 
+| | statfs | 查询挂载分区信息 | √ | √ | √ | √ | √ | 
+| | format | 格式化分区 | √ | × | × | × | × | 
+| | sync | 分区内容刷入设备 | √ | × | × | × | × | 
 
 
 ### 开发流程