Enum fidl_fuchsia_io::RightsResolution

#[repr(u32)]
pub enum RightsResolution {
    Maximize,
    Posix,
}

Variants

Maximize

The rights will be the intersection between [RightsRequest.at_most] and the connection where the Open/Reopen request was received, closing object_request with ZX_ERR_ACCESS_DENIED if it is empty.

Posix

The rights will be determined by the following rules:

• If the negotiated protocol on the new connection is [Directory], the rules from the MAXIMIZE case applies.
• Otherwise, the rights will be [RightsRequest.at_least] if it does not exceed rights on the current connection.
• Otherwise, object_request should be closed with ZX_ERR_ACCESS_DENIED.

The motivation for this enum is to facilitate implementing POSIX compatibility layers. The POSIX file permission model relies on ambient authority: access control on files are resolved based on the mode of the file, and the current user. There is no concept of hierarchical permissions. Fuchsia, on the other hand, restricts rights on file connections to never exceed that of its containing directory connection.

Implementations

impl RightsResolution

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

pub const fn into_primitive(self) -> u32

pub fn is_unknown(&self) -> bool

👎Deprecated: Strict enums should not use is_unknown

Trait Implementations

impl Clone for RightsResolution

fn clone(&self) -> RightsResolution

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for RightsResolution

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

Formats the value using the given formatter.

impl Decode<RightsResolution> for RightsResolution

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

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

impl Encode<RightsResolution> for RightsResolution

unsafe fn encode( self, encoder: &mut Encoder<'_>, 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 Hash for RightsResolution

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 Ord for RightsResolution

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<RightsResolution> for RightsResolution

fn eq(&self, other: &RightsResolution) -> 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 PartialOrd<RightsResolution> for RightsResolution

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl TypeMarker for RightsResolution

type Owned = RightsResolution

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 RightsResolution

type Borrowed<'a> = <RightsResolution as TypeMarker>::Owned

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<'a>(value: &'a <Self as TypeMarker>::Owned) -> Self::Borrowed<'a>

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

impl Copy for RightsResolution

impl Eq for RightsResolution

impl StructuralEq for RightsResolution

impl StructuralPartialEq for RightsResolution