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 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( source: &[u8], ) -> Result<&Self, ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, Infallible>>

where Self: KnownLayout + Immutable,

Interprets the given source as a &Self.

fn ref_from_prefix( source: &[u8], ) -> Result<(&Self, &[u8]), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, Infallible>>

where Self: KnownLayout + Immutable,

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

fn ref_from_suffix( source: &[u8], ) -> Result<(&[u8], &Self), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, Infallible>>

where Self: Immutable + KnownLayout,

Interprets the suffix of the given bytes as a &Self.

fn mut_from_bytes( source: &mut [u8], ) -> Result<&mut Self, ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, Infallible>>

where Self: IntoBytes + KnownLayout,

Interprets the given source as a &mut Self.

fn mut_from_prefix( source: &mut [u8], ) -> Result<(&mut Self, &mut [u8]), ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, Infallible>>

where Self: IntoBytes + KnownLayout,

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

fn mut_from_suffix( source: &mut [u8], ) -> Result<(&mut [u8], &mut Self), ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, Infallible>>

where Self: IntoBytes + KnownLayout,

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

fn read_from_bytes(source: &[u8]) -> Result<Self, SizeError<&[u8], Self>>

where Self: Sized,

Reads a copy of Self from the given source.

fn read_from_prefix( source: &[u8], ) -> Result<(Self, &[u8]), SizeError<&[u8], Self>>

where Self: Sized,

Reads a copy of Self from the prefix of the given source.

fn read_from_suffix( source: &[u8], ) -> Result<(&[u8], Self), SizeError<&[u8], Self>>

where Self: Sized,

Reads a copy of Self from the suffix of the given source.

impl FromZeros for Inode

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

fn zero(&mut self)

Overwrites self with zeros.

fn new_zeroed() -> Self

where Self: Sized,

Creates an instance of Self from zeroed bytes.

impl IntoBytes for Inode

where u16: IntoBytes, u32: IntoBytes, InodeBlocksCount: IntoBytes, InodeBlock: IntoBytes, u8: IntoBytes, (): PaddingFree<Self, { _ }>,

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

where Self: Immutable,

Gets the bytes of this value.

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

where Self: FromBytes,

Gets the bytes of this value mutably.

fn write_to(&self, dst: &mut [u8]) -> Result<(), SizeError<&Self, &mut [u8]>>

where Self: Immutable,

Writes a copy of self to dst.

fn write_to_prefix( &self, dst: &mut [u8], ) -> Result<(), SizeError<&Self, &mut [u8]>>

where Self: Immutable,

Writes a copy of self to the prefix of dst.

fn write_to_suffix( &self, dst: &mut [u8], ) -> Result<(), SizeError<&Self, &mut [u8]>>

where Self: Immutable,

Writes a copy of self to the suffix of dst.

impl KnownLayout for Inode

where u16: KnownLayout,

type PointerMetadata = <u16 as KnownLayout>::PointerMetadata

The type of metadata stored in a pointer to Self.

impl TryFromBytes for Inode

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

fn try_ref_from_bytes( source: &[u8], ) -> Result<&Self, ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: KnownLayout + Immutable,

Attempts to interpret the given source as a &Self.

fn try_ref_from_prefix( source: &[u8], ) -> Result<(&Self, &[u8]), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: KnownLayout + Immutable,

Attempts to interpret the prefix of the given source as a &Self.

fn try_ref_from_suffix( source: &[u8], ) -> Result<(&[u8], &Self), ConvertError<AlignmentError<&[u8], Self>, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: KnownLayout + Immutable,

Attempts to interpret the suffix of the given source as a &Self.

fn try_mut_from_bytes( bytes: &mut [u8], ) -> Result<&mut Self, ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, ValidityError<&mut [u8], Self>>>

where Self: KnownLayout,

Attempts to interpret the given source as a &mut Self without copying.

fn try_mut_from_prefix( source: &mut [u8], ) -> Result<(&mut Self, &mut [u8]), ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, ValidityError<&mut [u8], Self>>>

where Self: KnownLayout,

Attempts to interpret the prefix of the given source as a &mut Self.

fn try_mut_from_suffix( source: &mut [u8], ) -> Result<(&mut [u8], &mut Self), ConvertError<AlignmentError<&mut [u8], Self>, SizeError<&mut [u8], Self>, ValidityError<&mut [u8], Self>>>

where Self: KnownLayout,

Attempts to interpret the suffix of the given source as a &mut Self.

fn try_read_from_bytes( source: &[u8], ) -> Result<Self, ConvertError<Infallible, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: Sized,

Attempts to read the given source as a Self.

fn try_read_from_prefix( source: &[u8], ) -> Result<(Self, &[u8]), ConvertError<Infallible, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: Sized,

Attempts to read a Self from the prefix of the given source.

fn try_read_from_suffix( source: &[u8], ) -> Result<(&[u8], Self), ConvertError<Infallible, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: Sized,

Attempts to read a Self from the suffix of the given source.

impl Copy for Inode

impl Immutable for Inode

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