Struct ext2::inode::Inode

#[repr(C)]
pub(crate) struct Inode {

    mode: u16,
    uid: u16,
    pub size: u32,
    atime: u32,
    ctime: u32,
    mtime: u32,
    _dtime: u32,
    gid: u16,
    pub links_count: u16,
    pub blocks: InodeBlocksCount,
    _flags: u32,
    _osd1: u32,
    pub block: InodeBlock,
    _generation: u32,
    _file_acl: u32,
    _dir_acl: u32,
    _faddr: u32,
    _fragment_num: u8,
    _fragment_size: u8,
    _reserved1: u16,
    uid_high: u16,
    gid_high: u16,
    _reserved2: u32,
    pub extra_size: u16,
    _paddings: u16,
}

The ext2 inode.

The field names are based on the specification.

Fields

mode: u16

uid: u16

size: u32

atime: u32

ctime: u32

mtime: u32

_dtime: u32

gid: u16

links_count: u16

blocks: InodeBlocksCount

_flags: u32

_osd1: u32

block: InodeBlock

_generation: u32

_file_acl: u32

_dir_acl: u32

_faddr: u32

_fragment_num: u8

_fragment_size: u8

_reserved1: u16

uid_high: u16

gid_high: u16

_reserved2: u32

extra_size: u16

_paddings: u16

Implementations

impl Inode

pub const INODE_RECORD_SIZE: usize = 256usize

Size of the inode record in bytes.

From ext2 revision 1, inode size larger than 128 bytes is supported. We use 256 byte here, which is the default value for ext4.

Note that inode “record” size can be larger that inode “structure” size. The gap between the end of the inode structure and the end of the inode record can be used to store extended attributes.

pub const XATTR_AREA_SIZE: usize = 124usize

Size of the region that inline extended attributes can be written.

pub fn new<'a>( arena: &'a Arena<'a>, group: &mut GroupMetaData<'_>, inode_num: InodeNum, typ: InodeType, size: u32, xattr: Option<InlineXattrs> ) -> Result<&'a mut Self>

pub fn from_metadata<'a>( arena: &'a Arena<'a>, group: &mut GroupMetaData<'_>, inode_num: InodeNum, m: &Metadata, size: u32, links_count: u16, blocks: InodeBlocksCount, block: InodeBlock, xattr: Option<InlineXattrs> ) -> Result<&'a mut Self>

fn add_xattr<'a>( arena: &'a Arena<'a>, group: &mut GroupMetaData<'_>, inode: &mut Inode, inode_offset: usize, xattr: InlineXattrs ) -> Result<()>

pub fn update_metadata(&mut self, m: &Metadata)

pub fn typ(&self) -> Option<InodeType>

Trait Implementations

impl AsBytes for Inode

where u16: AsBytes, u32: AsBytes, InodeBlocksCount: AsBytes, InodeBlock: AsBytes, u8: AsBytes, HasPadding<Inode, { _ }>: ShouldBe<false>,

fn as_bytes(&self) -> &[u8]

Gets the bytes of this value.

fn as_bytes_mut(&mut self) -> &mut [u8]

where Self: FromBytes,

Gets the bytes of this value mutably.

fn write_to(&self, bytes: &mut [u8]) -> Option<()>

Writes a copy of self to bytes.

fn write_to_prefix(&self, bytes: &mut [u8]) -> Option<()>

Writes a copy of self to the prefix of bytes.

fn write_to_suffix(&self, bytes: &mut [u8]) -> Option<()>

Writes a copy of self to the suffix of bytes.

impl Clone for Inode

fn clone(&self) -> Inode

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Inode

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Inode

fn default() -> Self

Returns the “default value” for a type.

impl FromBytes for Inode

where u16: FromBytes, u32: FromBytes, InodeBlocksCount: FromBytes, InodeBlock: FromBytes, u8: FromBytes,

fn ref_from(bytes: &[u8]) -> Option<&Self>

where Self: Sized,

Interprets the given bytes as a &Self without copying.

fn ref_from_prefix(bytes: &[u8]) -> Option<&Self>

where Self: Sized,

Interprets the prefix of the given bytes as a &Self without copying.

fn ref_from_suffix(bytes: &[u8]) -> Option<&Self>

where Self: Sized,

Interprets the suffix of the given bytes as a &Self without copying.

fn mut_from(bytes: &mut [u8]) -> Option<&mut Self>

where Self: Sized + AsBytes,

Interprets the given bytes as a &mut Self without copying.

fn mut_from_prefix(bytes: &mut [u8]) -> Option<&mut Self>

where Self: Sized + AsBytes,

Interprets the prefix of the given bytes as a &mut Self without copying.

fn mut_from_suffix(bytes: &mut [u8]) -> Option<&mut Self>

where Self: Sized + AsBytes,

Interprets the suffix of the given bytes as a &mut Self without copying.

fn slice_from(bytes: &[u8]) -> Option<&[Self]>

where Self: Sized,

Interprets the given bytes as a &[Self] without copying.

fn slice_from_prefix(bytes: &[u8], count: usize) -> Option<(&[Self], &[u8])>

where Self: Sized,

Interprets the prefix of the given bytes as a &[Self] with length equal to count without copying.

fn slice_from_suffix(bytes: &[u8], count: usize) -> Option<(&[u8], &[Self])>

where Self: Sized,

Interprets the suffix of the given bytes as a &[Self] with length equal to count without copying.

fn mut_slice_from(bytes: &mut [u8]) -> Option<&mut [Self]>

where Self: Sized + AsBytes,

Interprets the given bytes as a &mut [Self] without copying.

fn mut_slice_from_prefix( bytes: &mut [u8], count: usize ) -> Option<(&mut [Self], &mut [u8])>

where Self: Sized + AsBytes,

Interprets the prefix of the given bytes as a &mut [Self] with length equal to count without copying.

fn mut_slice_from_suffix( bytes: &mut [u8], count: usize ) -> Option<(&mut [u8], &mut [Self])>

where Self: Sized + AsBytes,

Interprets the suffix of the given bytes as a &mut [Self] with length equal to count without copying.

fn read_from(bytes: &[u8]) -> Option<Self>

where Self: Sized,

Reads a copy of Self from bytes.

fn read_from_prefix(bytes: &[u8]) -> Option<Self>

where Self: Sized,

Reads a copy of Self from the prefix of bytes.

fn read_from_suffix(bytes: &[u8]) -> Option<Self>

where Self: Sized,

Reads a copy of Self from the suffix of bytes.

impl FromZeroes for Inode

where u16: FromZeroes, u32: FromZeroes, InodeBlocksCount: FromZeroes, InodeBlock: FromZeroes, u8: FromZeroes,

fn zero(&mut self)

Overwrites self with zeroes.

fn new_zeroed() -> Self

where Self: Sized,

Creates an instance of Self from zeroed bytes.

impl Copy for Inode