Credential

os::kernel::task::cred

Struct Credential 

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pub struct Credential {
    pub uid: u32,
    pub gid: u32,
    pub euid: u32,
    pub egid: u32,
    pub suid: u32,
    pub sgid: u32,
    pub fsuid: u32,
    pub fsgid: u32,
    pub capabilities: CapabilitySet,
}
Expand description

进程凭证结构

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§uid: u32

真实用户 ID

§gid: u32

真实组 ID

§euid: u32

有效用户 ID（用于权限检查）

§egid: u32

有效组 ID（用于权限检查）

§suid: u32

保存的用户 ID（用于 setuid 程序）

§sgid: u32

保存的组 ID（用于 setgid 程序）

§fsuid: u32

文件系统用户 ID（Linux 扩展，用于文件系统操作）

§fsgid: u32

文件系统组 ID

§capabilities: CapabilitySet

能力集合

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impl Credential

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pub const fn root() -> Self

创建 root 用户凭证

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pub fn is_root(&self) -> bool

检查是否为 root 用户

Trait Implementations§

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impl Clone for Credential

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fn clone(&self) -> Credential

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Credential

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

Formats the value using the given formatter. Read more
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impl Copy for Credential

Auto Trait Implementations§

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impl Freeze for Credential

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impl RefUnwindSafe for Credential

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impl Send for Credential

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impl Sync for Credential

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impl Unpin for Credential

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impl UnwindSafe for Credential

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.