Struct UserU8SliceWO 

pub struct UserU8SliceWO {
    addr: usize,
    len: usize,
}

A one-time, write-only pointer to a slice of u8 in user-space.

This struct allows the kernel to safely write to a user-space buffer while preventing TOCTOU attacks by taking ownership of the pointer during operations.

Fields

addr: usize

len: usize

Implementations

impl UserU8SliceWO

pub fn new(addr: usize, len: usize) -> Self

Creates a new UserU8SliceWO instance with the given user-space address and length.

pub fn put(self, other: &[u8]) -> Result<usize, KernelError>

Writes data from a slice to the user-space buffer.

Takes ownership of self to prevent TOCTOU attacks.

Returns Ok(usize) indicating the number of bytes written, or Err(KernelError::BadAddress) on failure.

Trait Implementations

impl Debug for UserU8SliceWO

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

Formats the value using the given formatter.

impl Ord for UserU8SliceWO

fn cmp(&self, other: &UserU8SliceWO) -> Ordering

This method returns an [Ordering] between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for UserU8SliceWO

fn eq(&self, other: &UserU8SliceWO) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for UserU8SliceWO

fn partial_cmp(&self, other: &UserU8SliceWO) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for UserU8SliceWO

impl StructuralPartialEq for UserU8SliceWO