[−][src]Enum x86_64::PrivilegeLevel
Represents a protection ring level.
Variants
Ring0
Privilege-level 0 (most privilege): This level is used by critical system-software components that require direct access to, and control over, all processor and system resources. This can include BIOS, memory-management functions, and interrupt handlers.
Ring1
Privilege-level 1 (moderate privilege): This level is used by less-critical system- software services that can access and control a limited scope of processor and system resources. Software running at these privilege levels might include some device drivers and library routines. The actual privileges of this level are defined by the operating system.
Ring2
Privilege-level 2 (moderate privilege): Like level 1, this level is used by less-critical system-software services that can access and control a limited scope of processor and system resources. The actual privileges of this level are defined by the operating system.
Ring3
Privilege-level 3 (least privilege): This level is used by application software. Software running at privilege-level 3 is normally prevented from directly accessing most processor and system resources. Instead, applications request access to the protected processor and system resources by calling more-privileged service routines to perform the accesses.
Methods
impl PrivilegeLevel
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pub fn from_u16(value: u16) -> PrivilegeLevel
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Creates a PrivilegeLevel
from a numeric value. The value must be in the range 0..4.
This function panics if the passed value is >3.
Trait Implementations
impl Copy for PrivilegeLevel
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impl Clone for PrivilegeLevel
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fn clone(&self) -> PrivilegeLevel
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fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more
impl PartialEq<PrivilegeLevel> for PrivilegeLevel
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fn eq(&self, other: &PrivilegeLevel) -> bool
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#[must_use]
fn ne(&self, other: &Rhs) -> bool
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This method tests for !=
.
impl Eq for PrivilegeLevel
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impl Debug for PrivilegeLevel
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Auto Trait Implementations
impl Send for PrivilegeLevel
impl Sync for PrivilegeLevel
Blanket Implementations
impl<T> From for T
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impl<T, U> TryFrom for T where
U: Into<T>,
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U: Into<T>,
type Error = !
try_from
)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 for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
try_from
)The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T, U> Into for T where
U: From<T>,
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U: From<T>,
impl<T> Borrow for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,