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UEventMessage

Struct UEventMessage 

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pub struct UEventMessage<'b> { /* private fields */ }
Expand description

Message uevent décodé, empruntant le buffer de l’appelant.

Aucune copie : UEventMessage::action, UEventMessage::subsystem, UEventMessage::property et l’itérateur UEventMessage::properties rendent des tranches d’octets (&[u8]) pointant dans le buffer source. Les clés/valeurs sont des octets, jamais présumés UTF-8 (Principe 3).

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impl<'b> UEventMessage<'b>

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pub fn parse(raw: &'b [u8]) -> Result<Self, Errno>

Décode un message uevent reçu dans raw.

Détecte automatiquement le format libudev (groupe USERSPACE) via le préfixe magique et expose les propriétés de façon uniforme.

§Errors
  • Errno::EBADMSG : buffer vide, ou en-tête libudev tronqué / au magic absent ou incohérent (offsets hors borne).
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pub fn action(&self) -> UEventAction

L’action du message (en-tête kernel, ou propriété ACTION en format libudev).

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pub fn device_path(&self) -> Option<&'b [u8]>

Le DEVPATH relatif à /sys (après le @ de l’en-tête, ou la propriété DEVPATH).

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pub fn subsystem(&self) -> Option<&'b [u8]>

Le sous-système (SUBSYSTEM=...).

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pub fn property(&self, key: &[u8]) -> Option<&'b [u8]>

La valeur d’une propriété arbitraire par clé (première occurrence).

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pub fn properties(&self) -> UEventProperties<'b>

Itère toutes les paires (clé, valeur) sans allouer.

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pub fn as_bytes(&self) -> &'b [u8]

Les octets bruts du message (diagnostic / passthrough).

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impl<'b> Clone for UEventMessage<'b>

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fn clone(&self) -> UEventMessage<'b>

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl<'b> Copy for UEventMessage<'b>

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impl<'b> Debug for UEventMessage<'b>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'b> Freeze for UEventMessage<'b>

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impl<'b> RefUnwindSafe for UEventMessage<'b>

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impl<'b> Send for UEventMessage<'b>

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impl<'b> Sync for UEventMessage<'b>

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impl<'b> Unpin for UEventMessage<'b>

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impl<'b> UnsafeUnpin for UEventMessage<'b>

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impl<'b> UnwindSafe for UEventMessage<'b>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.