Enum TrailingBehavior 

pub enum TrailingBehavior {
    Retain,
    Discard,
    // some variants omitted
}

Controls how PartitionIo.WritePartition handles partition contents beyond the end of the written payload (offset + size).

Variants

Retain

Preserve existing partition contents beyond the written range. If offset + size is not aligned to the partition’s block size, the trailing partial block is updated via read-modify-write.

Discard

Discard existing partition contents beyond the written range. Any trailing partial block is zero-padded without reading from storage first, and a best-effort TRIM operation is issued for the remaining blocks up to the end of the partition, allowing supporting storage backends (such as UFS or eMMC) to reclaim unused blocks for garbage collection and wear leveling.

Implementations

impl TrailingBehavior

pub fn from_primitive(prim: u32) -> Option<TrailingBehavior>

pub fn from_primitive_allow_unknown(prim: u32) -> TrailingBehavior

pub fn unknown() -> TrailingBehavior

pub const fn into_primitive(self) -> u32

pub fn is_unknown(&self) -> bool

Trait Implementations

impl Clone for TrailingBehavior

fn clone(&self) -> TrailingBehavior

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for TrailingBehavior

impl Debug for TrailingBehavior

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

Formats the value using the given formatter.

impl<D> Decode<TrailingBehavior, D> for TrailingBehavior

where D: ResourceDialect,

fn new_empty() -> TrailingBehavior

Creates a valid instance of Self. The specific value does not matter, since it will be overwritten by decode.

unsafe fn decode( &mut self, decoder: &mut Decoder<'_, D>, offset: usize, _depth: Depth, ) -> Result<(), Error>

Decodes an object of type T from the decoder’s buffers into self.

impl<D> Encode<TrailingBehavior, D> for TrailingBehavior

where D: ResourceDialect,

unsafe fn encode( self, encoder: &mut Encoder<'_, D>, offset: usize, _depth: Depth, ) -> Result<(), Error>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID.

impl Eq for TrailingBehavior

impl Hash for TrailingBehavior

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

where __H: Hasher,

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 Ord for TrailingBehavior

fn cmp(&self, other: &TrailingBehavior) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for TrailingBehavior

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for TrailingBehavior

fn partial_cmp(&self, other: &TrailingBehavior) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for TrailingBehavior

impl TypeMarker for TrailingBehavior

type Owned = TrailingBehavior

The owned Rust type which this FIDL type decodes into.

fn inline_align(_context: Context) -> usize

Returns the minimum required alignment of the inline portion of the encoded object. It must be a (nonzero) power of two.

fn inline_size(_context: Context) -> usize

Returns the size of the inline portion of the encoded object, including padding for alignment. Must be a multiple of inline_align.

fn encode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and encoding requires no validation. When true, we can optimize encoding arrays and vectors of Self::Owned to a single memcpy.

fn decode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and decoding requires no validation. When true, we can optimize decoding arrays and vectors of Self::Owned to a single memcpy.

impl ValueTypeMarker for TrailingBehavior

type Borrowed<'a> = TrailingBehavior

The Rust type to use for encoding. This is a particular Encode<Self> type cheaply obtainable from &Self::Owned. There are three cases:

fn borrow( value: &<TrailingBehavior as TypeMarker>::Owned, ) -> <TrailingBehavior as ValueTypeMarker>::Borrowed<'_>

Cheaply converts from &Self::Owned to Self::Borrowed.