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@@ -468,10 +468,6 @@ impl<'a> BootInformation<'a> {
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}
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}
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-// SAFETY: BootInformation contains a const ptr to memory that is never mutated.
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-// Sending this pointer to other threads is sound.
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-unsafe impl Send for BootInformation<'_> {}
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-
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impl fmt::Debug for BootInformation<'_> {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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/// Limit how many Elf-Sections should be debug-formatted.
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@@ -528,6 +524,30 @@ mod tests {
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use crate::memory_map::MemoryAreaType;
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use core::str::Utf8Error;
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+ /// Compile time test to check if the boot information is Send and Sync.
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+ /// This test is relevant to give library users flexebility in passing the
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+ /// struct around.
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+ #[test]
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+ fn boot_information_is_send_and_sync() {
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+ fn accept<T: Send + Sync>(_: T) {}
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+
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+ #[repr(C, align(8))]
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+ struct Bytes([u8; 16]);
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+ let bytes: Bytes = Bytes([
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+ 16, 0, 0, 0, // total_size
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+ 0, 0, 0, 0, // reserved
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+ 0, 0, 0, 0, // end tag type
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+ 8, 0, 0, 0, // end tag size
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+ ]);
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+ let ptr = bytes.0.as_ptr();
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+ let addr = ptr as usize;
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+ let bi = unsafe { BootInformation::load(ptr.cast()) };
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+ let bi = bi.unwrap();
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+
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+ // compile time test
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+ accept(bi);
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+ }
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+
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#[test]
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fn no_tags() {
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#[repr(C, align(8))]
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Philipp Schuster