Struct SimpleFsInode 

struct SimpleFsInode {
    inode_no: usize,
    inode_type: InodeType,
    mode: FileMode,
    data: SpinLock<Vec<u8>>,
    children: SpinLock<BTreeMap<String, Arc<SimpleFsInode>>>,
}

简单文件系统的 Inode

Fields

inode_no: usize

inode_type: InodeType

mode: FileMode

data: SpinLock<Vec<u8>>

children: SpinLock<BTreeMap<String, Arc<SimpleFsInode>>>

Implementations

impl SimpleFsInode

fn new_file(inode_no: u64, mode: FileMode) -> Self

创建文件 inode（带权限）

fn new_dir(inode_no: u64, mode: FileMode) -> Self

创建目录 inode（带权限）

fn next_inode_no(&self) -> u64

获取下一个 inode 编号

Trait Implementations

impl Inode for SimpleFsInode

fn metadata(&self) -> Result<InodeMetadata, FsError>

获取文件元数据

fn read_at(&self, offset: usize, buf: &mut [u8]) -> Result<usize, FsError>

从指定偏移量读取数据

fn write_at(&self, offset: usize, buf: &[u8]) -> Result<usize, FsError>

向指定偏移量写入数据

fn lookup(&self, name: &str) -> Result<Arc<dyn Inode>, FsError>

在目录中查找子项

fn create(&self, name: &str, mode: FileMode) -> Result<Arc<dyn Inode>, FsError>

在目录中创建文件

fn mkdir(&self, name: &str, mode: FileMode) -> Result<Arc<dyn Inode>, FsError>

在目录中创建子目录

fn unlink(&self, name: &str) -> Result<(), FsError>

删除普通文件/链接

fn readdir(&self) -> Result<Vec<DirEntry>, FsError>

列出目录内容

fn truncate(&self, size: usize) -> Result<(), FsError>

截断文件到指定大小

fn sync(&self) -> Result<(), FsError>

同步文件数据到存储设备

fn as_any(&self) -> &dyn Any

向下转型为 &dyn Any，用于支持 downcast

fn symlink(&self, _name: &str, _target: &str) -> Result<Arc<dyn Inode>, FsError>

创建符号链接

fn link(&self, _name: &str, _target: &Arc<dyn Inode>) -> Result<(), FsError>

创建硬链接

fn rmdir(&self, _name: &str) -> Result<(), FsError>

删除目录

fn rename( &self, _old_name: &str, _new_parent: Arc<dyn Inode>, _new_name: &str, ) -> Result<(), FsError>

重命名/移动 (原子操作)

fn set_times( &self, _atime: Option<TimeSpec>, _mtime: Option<TimeSpec>, ) -> Result<(), FsError>

设置文件时间戳

fn readlink(&self) -> Result<String, FsError>

读取符号链接的目标路径

fn mknod( &self, _name: &str, _mode: FileMode, _dev: u64, ) -> Result<Arc<dyn Inode>, FsError>

创建设备文件节点

fn chmod(&self, _mode: FileMode) -> Result<(), FsError>

修改文件权限模式

fn chown(&self, _uid: u32, _gid: u32) -> Result<(), FsError>

修改文件所有者和组

fn set_dentry(&self, _dentry: Weak<Dentry>)

设置 Dentry（可选方法）

fn get_dentry(&self) -> Option<Arc<Dentry>>

获取 Dentry（可选方法）