[−][src]Struct libbpf_rs::Map
Represents a created map.
Some methods require working with raw bytes. You may find libraries such as
plain
helpful.
Implementations
impl Map
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pub fn name(&self) -> &str
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pub fn fd(&self) -> i32
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Returns a file descriptor to the underlying map.
pub fn map_type(&self) -> MapType
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pub fn key_size(&self) -> u32
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Key size in bytes
pub fn value_size(&self) -> u32
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Value size in bytes
pub fn lookup(&self, key: &[u8], flags: MapFlags) -> Result<Option<Vec<u8>>>
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Returns map value as Vec
of u8
.
key
must have exactly Map::key_size()
elements.
pub fn delete(&mut self, key: &[u8]) -> Result<()>
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Deletes an element from the map.
key
must have exactly Map::key_size()
elements.
pub fn lookup_and_delete(&mut self, key: &[u8]) -> Result<Option<Vec<u8>>>
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Same as Map::lookup()
except this also deletes the key from the map.
Note that this operation is currently only implemented in the kernel for MapType::Queue
and MapType::Stack
.
key
must have exactly Map::key_size()
elements.
pub fn update(
&mut self,
key: &[u8],
value: &[u8],
flags: MapFlags
) -> Result<()>
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&mut self,
key: &[u8],
value: &[u8],
flags: MapFlags
) -> Result<()>
Update an element.
key
must have exactly Map::key_size()
elements. value
must have exatly
Map::value_size()
elements.
Auto Trait Implementations
impl RefUnwindSafe for Map
impl Send for Map
impl Sync for Map
impl Unpin for Map
impl UnwindSafe for Map
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,