Enum btrfs_diskformat::ExtentInlineRefType

#[repr(u8)]
pub enum ExtentInlineRefType {
    TreeBlockRef,
    SharedBlockRef,
    ExtentDataRef,
    SharedDataRef,
}

The type of ExtentInlineRef.

Variants

TreeBlockRef

The reference is indirect for a tree block.

offset contains the object ID of the tree root that allocated the block.

SharedBlockRef

The reference is shared for a tree block.

offset contains the byte offset of the node one level above in the tree where this block is located.

ExtentDataRef

The reference is indirect for a data extent.

An ExtentDataRef is located immediately after the type field and overlaps the unused offset field.

SharedDataRef

The reference is shared for a data extent.

offset contains the byte offset of the metadata that contains the extent data item that describes this extent.

Immediately following offset (and the end of ExtentInlineRef structure) is a SharedDataRef that contains the reference count.

Trait Implementations

impl Clone for ExtentInlineRefType

fn clone(&self) -> ExtentInlineRefType

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ExtentInlineRefType

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

Formats the value using the given formatter.

impl From<ExtentInlineRefType> for u8

fn from(enum_value: ExtentInlineRefType) -> Self

Converts to this type from the input type.

impl Hash for ExtentInlineRefType

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where
    H: Hasher,
    Self: Sized,

Feeds a slice of this type into the given Hasher.

impl IntoEnumIterator for ExtentInlineRefType

type Iterator = ExtentInlineRefTypeIter

fn iter() -> ExtentInlineRefTypeIter

impl PartialEq<ExtentInlineRefType> for ExtentInlineRefType

fn eq(&self, other: &ExtentInlineRefType) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<u8> for ExtentInlineRefType

type Error = TryFromPrimitiveError<ExtentInlineRefType>

The type returned in the event of a conversion error.

fn try_from(number: u8) -> Result<Self, TryFromPrimitiveError<Self>>

Performs the conversion.

impl TryFromPrimitive for ExtentInlineRefType

type Primitive = u8

const NAME: &'static str = _

fn try_from_primitive(
    number: Self::Primitive
) -> Result<Self, TryFromPrimitiveError<Self>>

impl Copy for ExtentInlineRefType

impl StructuralPartialEq for ExtentInlineRefType