memory_set/
lib.rs

1#![cfg_attr(not(test), no_std)]
2#![doc = include_str!("../README.md")]
3
4extern crate alloc;
5
6mod area;
7mod backend;
8mod set;
9
10#[cfg(test)]
11mod tests;
12
13pub use self::area::MemoryArea;
14pub use self::backend::MappingBackend;
15pub use self::set::MemorySet;
16
17/// Error type for memory mapping operations.
18#[derive(Debug, Eq, PartialEq)]
19pub enum MappingError {
20    /// Invalid parameter (e.g., `addr`, `size`, `flags`, etc.)
21    InvalidParam,
22    /// The given range overlaps with an existing mapping.
23    AlreadyExists,
24    /// The backend page table is in a bad state.
25    BadState,
26}
27
28#[cfg(feature = "axerrno")]
29impl From<MappingError> for axerrno::AxError {
30    fn from(err: MappingError) -> Self {
31        match err {
32            MappingError::InvalidParam => axerrno::AxError::InvalidInput,
33            MappingError::AlreadyExists => axerrno::AxError::AlreadyExists,
34            MappingError::BadState => axerrno::AxError::BadState,
35        }
36    }
37}
38
39/// A [`Result`] type with [`MappingError`] as the error type.
40pub type MappingResult<T = ()> = Result<T, MappingError>;
memory_set/lib.rs

memory_set/
lib.rs
