diff --git a/rust/kernel/types.rs b/rust/kernel/types.rs index 9e7ca066355cd5..70e173f15d87e8 100644 --- a/rust/kernel/types.rs +++ b/rust/kernel/types.rs @@ -481,21 +481,22 @@ pub enum Either { /// All bit-patterns must be valid for this type. This type must not have interior mutability. pub unsafe trait FromBytes {} -// SAFETY: All bit patterns are acceptable values of the types below. -unsafe impl FromBytes for u8 {} -unsafe impl FromBytes for u16 {} -unsafe impl FromBytes for u32 {} -unsafe impl FromBytes for u64 {} -unsafe impl FromBytes for usize {} -unsafe impl FromBytes for i8 {} -unsafe impl FromBytes for i16 {} -unsafe impl FromBytes for i32 {} -unsafe impl FromBytes for i64 {} -unsafe impl FromBytes for isize {} -// SAFETY: If all bit patterns are acceptable for individual values in an array, then all bit -// patterns are also acceptable for arrays of that type. -unsafe impl FromBytes for [T] {} -unsafe impl FromBytes for [T; N] {} +macro_rules! impl_frombytes { + ($($({$($generics:tt)*})? $t:ty, )*) => { + $(unsafe impl$($($generics)*)? FromBytes for $t {})* + }; +} + +impl_frombytes! { + // SAFETY: All bit patterns are acceptable values of the types below. + u8, u16, u32, u64, usize, + i8, i16, i32, i64, isize, + + // SAFETY: If all bit patterns are acceptable for individual values in an array, then all bit + // patterns are also acceptable for arrays of that type. + {} [T], + {} [T; N], +} /// Types that can be viewed as an immutable slice of initialized bytes. /// @@ -514,21 +515,22 @@ unsafe impl FromBytes for [T; N] {} /// mutability. pub unsafe trait AsBytes {} -// SAFETY: Instances of the following types have no uninitialized portions. -unsafe impl AsBytes for u8 {} -unsafe impl AsBytes for u16 {} -unsafe impl AsBytes for u32 {} -unsafe impl AsBytes for u64 {} -unsafe impl AsBytes for usize {} -unsafe impl AsBytes for i8 {} -unsafe impl AsBytes for i16 {} -unsafe impl AsBytes for i32 {} -unsafe impl AsBytes for i64 {} -unsafe impl AsBytes for isize {} -unsafe impl AsBytes for bool {} -unsafe impl AsBytes for char {} -unsafe impl AsBytes for str {} -// SAFETY: If individual values in an array have no uninitialized portions, then the array itself -// does not have any uninitialized portions either. -unsafe impl AsBytes for [T] {} -unsafe impl AsBytes for [T; N] {} +macro_rules! impl_asbytes { + ($($({$($generics:tt)*})? $t:ty, )*) => { + $(unsafe impl$($($generics)*)? AsBytes for $t {})* + }; +} + +impl_asbytes! { + // SAFETY: Instances of the following types have no uninitialized portions. + u8, u16, u32, u64, usize, + i8, i16, i32, i64, isize, + bool, + char, + str, + + // SAFETY: If individual values in an array have no uninitialized portions, then the array + // itself does not have any uninitialized portions either. + {} [T], + {} [T; N], +}