Struct Options

pub struct Options {
    pub block_size: Option<u32>,
    pub block_count: Option<u64>,
    pub type_guid: Option<Guid>,
    pub vmo: Option<Vmo>,
    pub publish: Option<bool>,
    /* private fields */
}

Options for creating a ram-disk. Some combinations are invalid and will result in ZX_ERR_INVALID_ARGS.

Fields

block_size: Option<u32>

If unspecified, the system page size is used.

block_count: Option<u64>

If unspecified, will be deduced from vmo.

type_guid: Option<Guid>

Optional type GUID returned in the fuchsia.hardware.block.partition.Partition protocol.

vmo: Option<Vmo>

If unspecified, a VMO will be created, in which case block_count must be specified.

publish: Option<bool>

If true, expose fuchsia.hardware.block.volume.Service for the ramdisk.

Trait Implementations

impl Debug for Options

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

Formats the value using the given formatter.

impl Decode<Options, DefaultFuchsiaResourceDialect> for Options

fn new_empty() -> Self

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<'_, DefaultFuchsiaResourceDialect>, offset: usize, depth: Depth, ) -> Result<()>

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

impl Default for Options

fn default() -> Options

Returns the “default value” for a type.

impl Encode<Options, DefaultFuchsiaResourceDialect> for &mut Options

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

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

impl PartialEq for Options

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl ResourceTypeMarker for Options

type Borrowed<'a> = &'a mut Options

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

fn take_or_borrow<'a>( value: &'a mut <Self as TypeMarker>::Owned, ) -> Self::Borrowed<'a>

Cheaply converts from &mut Self::Owned to Self::Borrowed. For HandleBased types this is “take” (it returns an owned handle and replaces value with Handle::invalid), and for all other types it is “borrow” (just converts from one reference to another).

impl TypeMarker for Options

type Owned = Options

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 Standalone<DefaultFuchsiaResourceDialect> for Options

impl StructuralPartialEq for Options