Enum VfOffset 

#[non_exhaustive]
pub enum VfOffset {
    At(u64),
    Cur,
    End,
}

The offset of a read or write operation.

Unlike the C API’s raw u64 sentinels (u64::MAX / u64::MAX - 1), a distinct type means an absolute offset can never collide with the special “current position” / “end of file” meanings.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

At(u64)

An absolute file offset.

Cur

The current read/write position of an open descriptor.

End

The end of the file.

Trait Implementations

impl Clone for VfOffset

fn clone(&self) -> VfOffset

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for VfOffset

impl Debug for VfOffset

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

Formats the value using the given formatter.

impl Eq for VfOffset

impl PartialEq for VfOffset

fn eq(&self, other: &VfOffset) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for VfOffset