Trait Filesystem 

pub trait Filesystem {
    // Provided methods
    fn open(&mut self, _ino: INode, _flags: u32) -> FSResult<OpenFile> { ... }
    fn open_dir(&mut self, _ino: INode, _flags: u32) -> FSResult<OpenDir> { ... }
    fn lookup(&mut self, _parent: INode, _name: &OsStr) -> FSResult<Lookup> { ... }
    fn getattr(&mut self, _inode: INode) -> FSResult<FileAttributes> { ... }
    fn setattr(
        &mut self,
        _inode: INode,
        _attr: SetFileAttributes,
    ) -> FSResult<FileAttributes> { ... }
    fn setxattr(
        &mut self,
        _ino: INode,
        _attr_name: &OsStr,
        _attr_value: &[u8],
        _flags: SetXAttrFlags,
    ) -> FSResult<()> { ... }
    fn getxattr(
        &mut self,
        _ino: INode,
        _attr_name: &OsStr,
        _max_len: u32,
    ) -> FSResult<XAttrRef<'_>> { ... }
    fn listxattrs(
        &mut self,
        _ino: INode,
        _max_len: u32,
    ) -> FSResult<(OsString, u32)> { ... }
    fn readdir(&mut self, _dir: INode, _offset: u64) -> FSResult<Vec<DirEntry>> { ... }
    fn read(&mut self, _ino: INode, _offset: u64, _size: u32) -> FSResult<&[u8]> { ... }
    fn write<T: BufRead>(
        &mut self,
        _ino: INode,
        _offset: u64,
        _size: u32,
        _buf: T,
    ) -> FSResult<u32> { ... }
}

Provided Methods

fn open(&mut self, _ino: INode, _flags: u32) -> FSResult<OpenFile>

fn open_dir(&mut self, _ino: INode, _flags: u32) -> FSResult<OpenDir>

fn lookup(&mut self, _parent: INode, _name: &OsStr) -> FSResult<Lookup>

fn getattr(&mut self, _inode: INode) -> FSResult<FileAttributes>

fn setattr( &mut self, _inode: INode, _attr: SetFileAttributes, ) -> FSResult<FileAttributes>

fn setxattr( &mut self, _ino: INode, _attr_name: &OsStr, _attr_value: &[u8], _flags: SetXAttrFlags, ) -> FSResult<()>

fn getxattr( &mut self, _ino: INode, _attr_name: &OsStr, _max_len: u32, ) -> FSResult<XAttrRef<'_>>

When max_len == 0, this is functionally requesting only the length of the requested attribute.

fn listxattrs( &mut self, _ino: INode, _max_len: u32, ) -> FSResult<(OsString, u32)>

When max_len is 0, the return value should be an empty string and the length of all the attributes with an additional nul byte.

When max_len is greater than 0, this function should return an OsString composed of all the xattr names seperated by a nul (\0) byte. If the length of that string is greater than max_len, however, the method should error and return FSError::BufferWouldOverflow.

fn readdir(&mut self, _dir: INode, _offset: u64) -> FSResult<Vec<DirEntry>>

Reads a directory.

Warning

This method must include the “.” and “..” directories, as well as properly accounting for offset. If not, some operations may get stuck in an infinite loop while trying to read a directory.

fn read(&mut self, _ino: INode, _offset: u64, _size: u32) -> FSResult<&[u8]>

fn write<T: BufRead>( &mut self, _ino: INode, _offset: u64, _size: u32, _buf: T, ) -> FSResult<u32>

Returns the amount of bytes written

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors