Struct ext2::fs::Ext2

pub(crate) struct Ext2<'a> {
    sb: &'a mut SuperBlock,
    cur_block_group: usize,
    cur_inode_table: usize,
    group_metadata: Vec<GroupMetaData<'a>>,
    dir_entries: BTreeMap<InodeNum, Vec<DirEntryBlock<'a>>>,
}

A struct to represent an ext2 filesystem.

Fields

sb: &'a mut SuperBlock

cur_block_group: usize

cur_inode_table: usize

group_metadata: Vec<GroupMetaData<'a>>

dir_entries: BTreeMap<InodeNum, Vec<DirEntryBlock<'a>>>

Implementations

impl<'a> Ext2<'a>

pub(crate) fn new(builder: &Builder, arena: &'a Arena<'a>) -> Result<Self>

fn allocate_inode(&mut self) -> Result<InodeNum>

fn allocate_block(&mut self) -> Result<BlockId>

fn allocate_contiguous_blocks(&mut self, n: u16) -> Result<Vec<Vec<BlockId>>>

fn group_num_for_inode(&self, inode: InodeNum) -> usize

fn get_inode_mut(&mut self, num: InodeNum) -> Result<&mut &'a mut Inode>

fn allocate_dir_entry( &mut self, arena: &'a Arena<'a>, parent: InodeNum, inode: InodeNum, typ: InodeType, name: &OsStr ) -> Result<()>

fn add_inode(&mut self, num: InodeNum, inode: &'a mut Inode) -> Result<()>

fn add_reserved_dir( &mut self, arena: &'a Arena<'a>, inode_num: InodeNum, parent_inode: InodeNum, name: &OsStr, xattr: Option<InlineXattrs> ) -> Result<()>

fn add_dir( &mut self, arena: &'a Arena<'a>, inode_num: InodeNum, parent_inode: InodeNum, path: &Path ) -> Result<()>

fn register_mmap_file( &mut self, arena: &'a Arena<'a>, block_num: usize, file: &File, file_size: usize, file_offset: usize ) -> Result<(Vec<BlockId>, usize)>

Registers a file to be mmaped to the memory region. This function just reserves a region for mmap() on arena and doesn’t call mmap(). It’s arena’s owner’s responsibility to call mmap() for the registered files at the end.

fn fill_indirect_block( &mut self, arena: &'a Arena<'a>, indirect_table: BlockId, file: &File, file_size: usize, file_offset: usize ) -> Result<usize>

fn add_file( &mut self, arena: &'a Arena<'a>, parent_inode: InodeNum, path: &Path ) -> Result<()>

fn add_symlink( &mut self, arena: &'a Arena<'a>, parent: InodeNum, entry: &DirEntry ) -> Result<()>

fn add_long_symlink( &mut self, arena: &'a Arena<'a>, parent: InodeNum, link: &Path, dst: &str ) -> Result<()>

pub(crate) fn copy_dirtree<P: AsRef<Path>>( &mut self, arena: &'a Arena<'a>, src_dir: P ) -> Result<()>

Walks through src_dir and copies directories and files to the new file system.

fn copy_dirtree_rec<P: AsRef<Path>>( &mut self, arena: &'a Arena<'a>, parent_inode: InodeNum, src_dir: P ) -> Result<()>

pub(crate) fn copy_backup_metadata(self, arena: &'a Arena<'a>) -> Result<()>