Struct fidl_fuchsia_io::OpenFlags

pub struct OpenFlags { /* private fields */ }

Implementations

impl OpenFlags

pub const RIGHT_READABLE: Self = _

Can read from target object.

pub const RIGHT_WRITABLE: Self = _

Can write to target object.

pub const RIGHT_EXECUTABLE: Self = _

Connection can map target object executable.

pub const CREATE: Self = _

Create the object if it doesn’t exist.

pub const CREATE_IF_ABSENT: Self = _

(with Create) Fail if the object already exists.

pub const TRUNCATE: Self = _

Truncate the object before usage.

pub const DIRECTORY: Self = _

Assert that the object to be opened is a directory. Return an error if the target object is not a directory.

pub const APPEND: Self = _

Seek to the end of the object before all writes.

pub const NODE_REFERENCE: Self = _

Open a reference to the object, not the object itself. It is ONLY valid to pass the following flags together with NODE_REFERENCE:

• DIRECTORY
• NOT_DIRECTORY
• DESCRIBE otherwise an error is returned. If an object is opened or cloned using this method, the resulting connection does not carry any permission flags. The resulting node allows a limited set of operations: GetAttr, Clone, Close, Describe, and, if the node is a file, these extra operations: GetFlags, SetFlags.

pub const DESCRIBE: Self = _

Requests that an “OnOpen” event is sent to the interface request.

The event will contain a non-null NodeInfoDeprecated if the open/clone is successful. This can be used to open a protocol that does not compose fuchsia.io/Node; the event is sent as if the protocol is fuchsia.io/Node and then the target protocol is used exclusively.

pub const POSIX_WRITABLE: Self = _

Specify this flag to request POSIX-compatibility with respect to write permission handling. Currently, it affects permission handling specifically during Open:

• If the target path is a directory, the rights on the new connection expand to include WRITABLE if and only if the current connection and all intermediate mount points are writable.
• Otherwise, this flag is ignored. It is an access denied error to request more rights than those on the current connection, or any intermediate mount points.

If this flag is omitted, opening always uses the requested rights, failing the operation with access denied error if requested rights exceeds the rights attached to the current connection.

If the requesting connection is read-only and the requested rights are read-only, the flag may be ignored by the server, and is not forwarded downstream. This is an implementation detail, necessary to enforce hierarchical permissions across mount points, and should have no effect on the expected behavior for clients.

pub const POSIX_EXECUTABLE: Self = _

Specify this flag to request POSIX-compatibility with respect to execute permission handling. Currently, it affects permission handling specifically during Open:

• If the target path is a directory, the rights on the new connection expand to include EXECUTABLE if and only if the current connection and all intermediate mount points are executable.
• Otherwise, this flag is ignored. It is an access denied error to request more rights than those on the current connection, or any intermediate mount points.

If this flag is omitted, opening always uses the requested rights, failing the operation with access denied error if requested rights exceeds the rights attached to the current connection.

If the requesting connection is read-only and the requested rights are read-only, the flag may be ignored by the server, and is not forwarded downstream. This is an implementation detail, necessary to enforce hierarchical permissions across mount points, and should have no effect on the expected behavior for clients.

pub const NOT_DIRECTORY: Self = _

Assert that the object to be opened is not a directory. Return an error if the target object is a directory.

pub const CLONE_SAME_RIGHTS: Self = _

When used during clone, the new connection inherits the rights on the source connection, regardless if it is a file or directory. Otherwise, clone attempts to use the requested rights. It is invalid to pass any of the RIGHT_* flags together with OpenFlags.CLONE_SAME_RIGHTS.

pub const BLOCK_DEVICE: Self = _

Open the target object as a block device.

pub const fn empty() -> Self

Returns an empty set of flags.

pub const fn all() -> Self

Returns the set containing all flags.

pub const fn bits(&self) -> u32

Returns the raw value of the flags currently stored.

pub const fn from_bits(bits: u32) -> Option<Self>

Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.

pub const fn from_bits_truncate(bits: u32) -> Self

Convert from underlying bit representation, dropping any bits that do not correspond to flags.

pub const unsafe fn from_bits_unchecked(bits: u32) -> Self

Convert from underlying bit representation, preserving all bits (even those not corresponding to a defined flag).

Safety

The caller of the bitflags! macro can chose to allow or disallow extra bits for their bitflags type.

The caller of from_bits_unchecked() has to ensure that all bits correspond to a defined flag or that extra bits are valid for this bitflags type.

pub const fn is_empty(&self) -> bool

Returns true if no flags are currently stored.

pub const fn is_all(&self) -> bool

Returns true if all flags are currently set.

pub const fn intersects(&self, other: Self) -> bool

Returns true if there are flags common to both self and other.

pub const fn contains(&self, other: Self) -> bool

Returns true if all of the flags in other are contained within self.

pub fn insert(&mut self, other: Self)

Inserts the specified flags in-place.

pub fn remove(&mut self, other: Self)

Removes the specified flags in-place.

pub fn toggle(&mut self, other: Self)

Toggles the specified flags in-place.

pub fn set(&mut self, other: Self, value: bool)

Inserts or removes the specified flags depending on the passed value.

pub const fn intersection(self, other: Self) -> Self

Returns the intersection between the flags in self and other.

Specifically, the returned set contains only the flags which are present in both self and other.

This is equivalent to using the & operator (e.g. ops::BitAnd), as in flags & other.

pub const fn union(self, other: Self) -> Self

Returns the union of between the flags in self and other.

Specifically, the returned set contains all flags which are present in either self or other, including any which are present in both (see Self::symmetric_difference if that is undesirable).

This is equivalent to using the | operator (e.g. ops::BitOr), as in flags | other.

pub const fn difference(self, other: Self) -> Self

Returns the difference between the flags in self and other.

Specifically, the returned set contains all flags present in self, except for the ones present in other.

It is also conceptually equivalent to the “bit-clear” operation: flags & !other (and this syntax is also supported).

This is equivalent to using the - operator (e.g. ops::Sub), as in flags - other.

pub const fn symmetric_difference(self, other: Self) -> Self

Returns the symmetric difference between the flags in self and other.

Specifically, the returned set contains the flags present which are present in self or other, but that are not present in both. Equivalently, it contains the flags present in exactly one of the sets self and other.

This is equivalent to using the ^ operator (e.g. ops::BitXor), as in flags ^ other.

pub const fn complement(self) -> Self

Returns the complement of this set of flags.

Specifically, the returned set contains all the flags which are not set in self, but which are allowed for this type.

Alternatively, it can be thought of as the set difference between Self::all() and self (e.g. Self::all() - self)

This is equivalent to using the ! operator (e.g. ops::Not), as in !flags.

impl OpenFlags

pub fn has_unknown_bits(&self) -> bool

👎Deprecated: Strict bits should not use has_unknown_bits

pub fn get_unknown_bits(&self) -> u32

👎Deprecated: Strict bits should not use get_unknown_bits

Trait Implementations

impl Binary for OpenFlags

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

Formats the value using the given formatter.

impl BitAnd<OpenFlags> for OpenFlags

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

Returns the intersection between the two sets of flags.

type Output = OpenFlags

The resulting type after applying the & operator.

impl BitAndAssign<OpenFlags> for OpenFlags

fn bitand_assign(&mut self, other: Self)

Disables all flags disabled in the set.

impl BitOr<OpenFlags> for OpenFlags

fn bitor(self, other: OpenFlags) -> Self

Returns the union of the two sets of flags.

type Output = OpenFlags

The resulting type after applying the | operator.

impl BitOrAssign<OpenFlags> for OpenFlags

fn bitor_assign(&mut self, other: Self)

Adds the set of flags.

impl BitXor<OpenFlags> for OpenFlags

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

Returns the left flags, but with all the right flags toggled.

type Output = OpenFlags

The resulting type after applying the ^ operator.

impl BitXorAssign<OpenFlags> for OpenFlags

fn bitxor_assign(&mut self, other: Self)

Toggles the set of flags.

impl Clone for OpenFlags

fn clone(&self) -> OpenFlags

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for OpenFlags

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

Formats the value using the given formatter.

impl Decode<OpenFlags> for OpenFlags

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<OpenFlags> for OpenFlags

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 Extend<OpenFlags> for OpenFlags

fn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

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

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

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

Reserves capacity in a collection for the given number of additional elements.

impl FromIterator<OpenFlags> for OpenFlags

fn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self

Creates a value from an iterator.

impl Hash for OpenFlags

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 LowerHex for OpenFlags

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

Formats the value using the given formatter.

impl Not for OpenFlags

fn not(self) -> Self

Returns the complement of this set of flags.

type Output = OpenFlags

The resulting type after applying the ! operator.

impl Octal for OpenFlags

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

Formats the value using the given formatter.

impl Ord for OpenFlags

fn cmp(&self, other: &OpenFlags) -> 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<OpenFlags> for OpenFlags

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

fn partial_cmp(&self, other: &OpenFlags) -> 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 Sub<OpenFlags> for OpenFlags

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

Returns the set difference of the two sets of flags.

type Output = OpenFlags

The resulting type after applying the - operator.

impl SubAssign<OpenFlags> for OpenFlags

fn sub_assign(&mut self, other: Self)

Disables all flags enabled in the set.

impl TypeMarker for OpenFlags

type Owned = OpenFlags

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 UpperHex for OpenFlags

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

Formats the value using the given formatter.

impl ValueTypeMarker for OpenFlags

type Borrowed<'a> = <OpenFlags 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 OpenFlags

impl Eq for OpenFlags

impl StructuralEq for OpenFlags

impl StructuralPartialEq for OpenFlags