vmm_sys_util::syscall

Struct SyscallReturnCode

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pub struct SyscallReturnCode<T: From<i8> + Eq = c_int>(pub T);
Expand description

Wrapper to interpret syscall exit codes and provide a rustacean io::Result.

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§0: T

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impl<T: From<i8> + Eq> SyscallReturnCode<T>

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pub fn into_result(self) -> Result<T>

Returns the last OS error if value is -1 or Ok(value) otherwise.

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pub fn into_empty_result(self) -> Result<()>

Returns the last OS error if value is -1 or Ok(()) otherwise.

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impl<T: Debug + From<i8> + Eq> Debug for SyscallReturnCode<T>

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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<T> Freeze for SyscallReturnCode<T>
where T: Freeze,

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impl<T> RefUnwindSafe for SyscallReturnCode<T>
where T: RefUnwindSafe,

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impl<T> Send for SyscallReturnCode<T>
where T: Send,

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impl<T> Sync for SyscallReturnCode<T>
where T: Sync,

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impl<T> Unpin for SyscallReturnCode<T>
where T: Unpin,

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impl<T> UnwindSafe for SyscallReturnCode<T>
where T: 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> 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, 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.