bitwarden_core

Struct ZeroizingAllocator

pub struct ZeroizingAllocator<Alloc>(pub Alloc)
where
    Alloc: GlobalAlloc;
Expand description

Custom allocator that zeroizes memory before deallocating it

This is highly recommended to be enabled when using the Bitwarden crates to avoid sensitive data persisting in memory after it has been deallocated.

This allocator is a decorator around another allocator.

§Example

This example shows how to use the ZeroizingAllocator with the system allocator.

#[global_allocator]
static ALLOC: bitwarden_crypto::ZeroizingAllocator<std::alloc::System> =
   bitwarden_crypto::ZeroizingAllocator(std::alloc::System);

Tuple Fields§

§0: Alloc

Trait Implementations§

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impl<T> GlobalAlloc for ZeroizingAllocator<T>
where T: GlobalAlloc,

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unsafe fn alloc(&self, layout: Layout) -> *mut u8

Allocates memory as described by the given layout. Read more
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unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout)

Deallocates the block of memory at the given ptr pointer with the given layout. Read more
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unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8

Behaves like alloc, but also ensures that the contents are set to zero before being returned. Read more
1.28.0 · Source§

unsafe fn realloc( &self, ptr: *mut u8, layout: Layout, new_size: usize, ) -> *mut u8

Shrinks or grows a block of memory to the given new_size in bytes. The block is described by the given ptr pointer and layout. Read more

Auto Trait Implementations§

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impl<Alloc> Freeze for ZeroizingAllocator<Alloc>
where Alloc: Freeze,

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impl<Alloc> RefUnwindSafe for ZeroizingAllocator<Alloc>
where Alloc: RefUnwindSafe,

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impl<Alloc> Send for ZeroizingAllocator<Alloc>
where Alloc: Send,

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impl<Alloc> Sync for ZeroizingAllocator<Alloc>
where Alloc: Sync,

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impl<Alloc> Unpin for ZeroizingAllocator<Alloc>
where Alloc: Unpin,

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impl<Alloc> UnwindSafe for ZeroizingAllocator<Alloc>
where Alloc: UnwindSafe,

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> CompatExt for T

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fn compat(self) -> Compat<T>

Applies the [Compat] adapter by value. Read more
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fn compat_ref(&self) -> Compat<&T>

Applies the [Compat] adapter by shared reference. Read more
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fn compat_mut(&mut self) -> Compat<&mut T>

Applies the [Compat] adapter by mutable reference. 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, UT> HandleAlloc<UT> for T
where T: Send + Sync,

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fn new_handle(value: Arc<T>) -> Handle

Create a new handle for an Arc value Read more
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unsafe fn clone_handle(handle: Handle) -> Handle

Clone a handle Read more
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unsafe fn consume_handle(handle: Handle) -> Arc<T>

Consume a handle, getting back the initial Arc<> Read more
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unsafe fn get_arc(handle: Handle) -> Arc<Self>

Get a clone of the Arc<> using a “borrowed” handle. Read more
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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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.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more