kernel/alloc/kvec/
errors.rs

1// SPDX-License-Identifier: GPL-2.0
2
3//! Errors for the [`Vec`] type.
4
5use crate::{
6    fmt,
7    prelude::*, //
8};
9
10/// Error type for [`Vec::push_within_capacity`].
11pub struct PushError<T>(pub T);
12
13impl<T> fmt::Debug for PushError<T> {
14    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
15        write!(f, "Not enough capacity")
16    }
17}
18
19impl<T> From<PushError<T>> for Error {
20    #[inline]
21    fn from(_: PushError<T>) -> Error {
22        // Returning ENOMEM isn't appropriate because the system is not out of memory. The vector
23        // is just full and we are refusing to resize it.
24        EINVAL
25    }
26}
27
28/// Error type for [`Vec::remove`].
29pub struct RemoveError;
30
31impl fmt::Debug for RemoveError {
32    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
33        write!(f, "Index out of bounds")
34    }
35}
36
37impl From<RemoveError> for Error {
38    #[inline]
39    fn from(_: RemoveError) -> Error {
40        EINVAL
41    }
42}
43
44/// Error type for [`Vec::insert_within_capacity`].
45pub enum InsertError<T> {
46    /// The value could not be inserted because the index is out of bounds.
47    IndexOutOfBounds(T),
48    /// The value could not be inserted because the vector is out of capacity.
49    OutOfCapacity(T),
50}
51
52impl<T> fmt::Debug for InsertError<T> {
53    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
54        match self {
55            InsertError::IndexOutOfBounds(_) => write!(f, "Index out of bounds"),
56            InsertError::OutOfCapacity(_) => write!(f, "Not enough capacity"),
57        }
58    }
59}
60
61impl<T> From<InsertError<T>> for Error {
62    #[inline]
63    fn from(_: InsertError<T>) -> Error {
64        EINVAL
65    }
66}
kernel/alloc/kvec/errors.rs

kernel/alloc/kvec/
errors.rs
