Struct NodeAttributesQuery

pub struct NodeAttributesQuery(/* private fields */);

Implementations

impl NodeAttributesQuery

pub const PROTOCOLS: Self

Requests [NodeAttributes.protocols].

pub const ABILITIES: Self

Requests [NodeAttributes.abilities].

pub const CONTENT_SIZE: Self

Requests [NodeAttributes.content_size].

pub const STORAGE_SIZE: Self

Requests [NodeAttributes.storage_size].

pub const LINK_COUNT: Self

Requests [NodeAttributes.link_count].

pub const ID: Self

Requests [NodeAttributes.id].

pub const CREATION_TIME: Self

Requests [NodeAttributes.creation_time].

pub const MODIFICATION_TIME: Self

Requests [NodeAttributes.modification_time].

pub const MODE: Self

Posix attributes.

pub const UID: Self

pub const GID: Self

pub const RDEV: Self

pub const ACCESS_TIME: Self

pub const CHANGE_TIME: Self

pub const OPTIONS: Self

Verity attributes.

pub const ROOT_HASH: Self

pub const VERITY_ENABLED: Self

pub const CASEFOLD: Self

Casefold (case-insensitive filename) support. When true, file lookups will be case-insensitive but case-preserving. i.e. “Foo” will be stored verbatim but can be opened as “foo”, “fOO”, etc. Casefolding is done in accordance to the Unicode 12 NFD normalization and casefolding standard.

pub const SELINUX_CONTEXT: Self

Requests [MutableNodeAttributes.selinux_context]. See that field for more detail.

pub const WRAPPING_KEY_ID: Self

fscrypt attribute.

pub const PENDING_ACCESS_TIME_UPDATE: Self

When this is queried in [fuchsia.io/Node.GetAttributes], it indicates to the filesystem that this node has been accessed and is pending an access time update given that any one of the following conditions are met:

• current_access_time <= current_modification_time
• current_access_time <= current_change_time
• current_access_time < current_time - duration(1 day)

If any of the above conditions are met, access_time is updated to the current time before any queried node attributes are returned.

This is compatible with Linux relatime mount.

The rationale behind adding this NodeAttributesQuery is that some filesystems, e.g. Fxfs, are unable to identify when a file access has occured and thus update the access time. We allow for clients to communicate to the underlying filesystem that a file access has occurred and that it awaits for an update to access time.

WARNING: If this is queried without a prior file access, as long as the above conditions are met, the node’s access time will be updated. Not all filesystems will support this. The query will be ignored if the filesystem does not support this.

impl NodeAttributesQuery

pub const fn empty() -> Self

Get a flags value with all bits unset.

pub const fn all() -> Self

Get a flags value with all known bits set.

pub const fn bits(&self) -> u64

Get the underlying bits value.

The returned value is exactly the bits set in this flags value.

pub const fn from_bits(bits: u64) -> Option<Self>

Convert from a bits value.

This method will return None if any unknown bits are set.

pub const fn from_bits_truncate(bits: u64) -> Self

Convert from a bits value, unsetting any unknown bits.

pub const fn from_bits_retain(bits: u64) -> Self

Convert from a bits value exactly.

pub fn from_name(name: &str) -> Option<Self>

Get a flags value with the bits of a flag with the given name set.

This method will return None if name is empty or doesn’t correspond to any named flag.

pub const fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.

pub const fn is_all(&self) -> bool

Whether all known bits in this flags value are set.

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

Whether any set bits in a source flags value are also set in a target flags value.

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

Whether all set bits in a source flags value are also set in a target flags value.

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

The bitwise or (|) of the bits in two flags values.

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

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. remove won’t truncate other, but the ! operator will.

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

The bitwise exclusive-or (^) of the bits in two flags values.

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

Call insert when value is true or remove when value is false.

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

The bitwise and (&) of the bits in two flags values.

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

The bitwise or (|) of the bits in two flags values.

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

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

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

The bitwise exclusive-or (^) of the bits in two flags values.

pub const fn complement(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.

impl NodeAttributesQuery

pub const fn iter(&self) -> Iter<NodeAttributesQuery>

Yield a set of contained flags values.

Each yielded flags value will correspond to a defined named flag. Any unknown bits will be yielded together as a final flags value.

pub const fn iter_names(&self) -> IterNames<NodeAttributesQuery>

Yield a set of contained named flags values.

This method is like iter, except only yields bits in contained named flags. Any unknown bits, or bits not corresponding to a contained flag will not be yielded.

Trait Implementations

impl Binary for NodeAttributesQuery

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

Formats the value using the given formatter.

impl BitAnd for NodeAttributesQuery

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

The bitwise and (&) of the bits in two flags values.

type Output = NodeAttributesQuery

The resulting type after applying the & operator.

impl BitAndAssign for NodeAttributesQuery

fn bitand_assign(&mut self, other: Self)

The bitwise and (&) of the bits in two flags values.

impl BitOr for NodeAttributesQuery

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

The bitwise or (|) of the bits in two flags values.

type Output = NodeAttributesQuery

The resulting type after applying the | operator.

impl BitOrAssign for NodeAttributesQuery

fn bitor_assign(&mut self, other: Self)

The bitwise or (|) of the bits in two flags values.

impl BitXor for NodeAttributesQuery

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

The bitwise exclusive-or (^) of the bits in two flags values.

type Output = NodeAttributesQuery

The resulting type after applying the ^ operator.

impl BitXorAssign for NodeAttributesQuery

fn bitxor_assign(&mut self, other: Self)

The bitwise exclusive-or (^) of the bits in two flags values.

impl Clone for NodeAttributesQuery

fn clone(&self) -> NodeAttributesQuery

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for NodeAttributesQuery

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

Formats the value using the given formatter.

impl Encodable for NodeAttributesQuery

type Encoded = WireNodeAttributesQuery

The wire type for the value.

const COPY_OPTIMIZATION: CopyOptimization<Self> = _

An optimization flag that allows the bytes of this type to be copied directly during encoding instead of calling encode.

impl<___E> Encode<___E> for NodeAttributesQuery

where ___E: ?Sized,

fn encode( &mut self, _: &mut ___E, out: &mut MaybeUninit<Self::Encoded>, ) -> Result<(), EncodeError>

Encodes this value into an encoder and output.

impl Extend<NodeAttributesQuery> for NodeAttributesQuery

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

The bitwise or (|) of the bits in each flags value.

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 Flags for NodeAttributesQuery

const FLAGS: &'static [Flag<NodeAttributesQuery>]

The set of defined flags.

type Bits = u64

The underlying bits type.

fn bits(&self) -> u64

Get the underlying bits value.

fn from_bits_retain(bits: u64) -> NodeAttributesQuery

Convert from a bits value exactly.

fn empty() -> Self

Get a flags value with all bits unset.

fn all() -> Self

Get a flags value with all known bits set.

fn contains_unknown_bits(&self) -> bool

This method will return true if any unknown bits are set.

fn from_bits(bits: Self::Bits) -> Option<Self>

Convert from a bits value.

fn from_bits_truncate(bits: Self::Bits) -> Self

Convert from a bits value, unsetting any unknown bits.

fn from_name(name: &str) -> Option<Self>

Get a flags value with the bits of a flag with the given name set.

fn iter(&self) -> Iter<Self>

Yield a set of contained flags values.

fn iter_names(&self) -> IterNames<Self>

Yield a set of contained named flags values.

fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.

fn is_all(&self) -> bool

Whether all known bits in this flags value are set.

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

where Self: Sized,

Whether any set bits in a source flags value are also set in a target flags value.

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

where Self: Sized,

Whether all set bits in a source flags value are also set in a target flags value.

fn truncate(&mut self)

where Self: Sized,

Remove any unknown bits from the flags.

fn insert(&mut self, other: Self)

where Self: Sized,

The bitwise or (|) of the bits in two flags values.

fn remove(&mut self, other: Self)

where Self: Sized,

The intersection of a source flags value with the complement of a target flags value (&!).

fn toggle(&mut self, other: Self)

where Self: Sized,

The bitwise exclusive-or (^) of the bits in two flags values.

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

where Self: Sized,

Call [Flags::insert] when value is true or [Flags::remove] when value is false.

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

The bitwise and (&) of the bits in two flags values.

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

The bitwise or (|) of the bits in two flags values.

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

The intersection of a source flags value with the complement of a target flags value (&!).

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

The bitwise exclusive-or (^) of the bits in two flags values.

fn complement(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.

impl From<NodeAttributesQuery> for WireNodeAttributesQuery

fn from(natural: NodeAttributesQuery) -> Self

Converts to this type from the input type.

impl From<WireNodeAttributesQuery> for NodeAttributesQuery

fn from(wire: WireNodeAttributesQuery) -> Self

Converts to this type from the input type.

impl FromIterator<NodeAttributesQuery> for NodeAttributesQuery

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

The bitwise or (|) of the bits in each flags value.

impl Hash for NodeAttributesQuery

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 IntoIterator for NodeAttributesQuery

type Item = NodeAttributesQuery

The type of the elements being iterated over.

type IntoIter = Iter<NodeAttributesQuery>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl LowerHex for NodeAttributesQuery

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

Formats the value using the given formatter.

impl Not for NodeAttributesQuery

fn not(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.

type Output = NodeAttributesQuery

The resulting type after applying the ! operator.

impl Octal for NodeAttributesQuery

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

Formats the value using the given formatter.

impl PartialEq for NodeAttributesQuery

fn eq(&self, other: &NodeAttributesQuery) -> 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 PublicFlags for NodeAttributesQuery

type Primitive = u64

The type of the underlying storage.

type Internal = InternalBitFlags

The type of the internal field on the generated flags type.

impl Sub for NodeAttributesQuery

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

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

type Output = NodeAttributesQuery

The resulting type after applying the - operator.

impl SubAssign for NodeAttributesQuery

fn sub_assign(&mut self, other: Self)

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

impl TakeFrom<WireNodeAttributesQuery> for NodeAttributesQuery

fn take_from(from: &WireNodeAttributesQuery) -> Self

Converts from the given T, taking any resources that can’t be cloned.

const COPY_OPTIMIZATION: CopyOptimization<Self> = _

An optimization flag that allows the bytes of this type to be copied directly during conversion instead of calling take_from.

impl UpperHex for NodeAttributesQuery

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

Formats the value using the given formatter.

impl Copy for NodeAttributesQuery

impl Eq for NodeAttributesQuery

impl StructuralPartialEq for NodeAttributesQuery