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Originally, when the Rust upstream `alloc` standard library crate was
vendored, the SPDX License Identifiers were added to every file so that
the license on those was clear. The same happened with the vendoring of
`proc_macro2`, `quote` and `syn`. Please see:
commit 057b8d257107 ("rust: adapt `alloc` crate to the kernel")
commit 69942c0a8965 ("rust: syn: add SPDX License Identifiers")
commit ddfa1b279d08 ("rust: quote: add SPDX License Identifiers")
commit a9acfceb9614 ("rust: proc-macro2: add SPDX License Identifiers")
Thus do the same for the `zerocopy-derive` crate.
This makes `scripts/spdxcheck.py` pass: use parentheses like commit
06e9bfc1e57d ("ionic: make spdxcheck.py happy") did since we have two
`OR` operators in the expression (three licenses).
Finally, as requested, I filed an issue [1] with upstream about it.
Cc: Joshua Liebow-Feeser <joshlf@google.com>
Cc: Jack Wrenn <jswrenn@google.com>
Link: https://github.com/google/zerocopy/issues/3428 [1]
Link: https://patch.msgid.link/20260608141439.182634-15-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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This is a subset of the Rust `zerocopy-derive` crate, version v0.8.50
(released 2026-05-31), licensed under "BSD-2-Clause OR Apache-2.0 OR
MIT", from:
https://github.com/google/zerocopy/tree/v0.8.50/zerocopy-derive/src
The files are copied as-is, with no modifications whatsoever (not even
adding the SPDX identifiers).
For copyright details, please see:
https://github.com/google/zerocopy/blob/v0.8.50/README.md?plain=1
https://github.com/google/zerocopy/blob/v0.8.50/LICENSE-BSD
https://github.com/google/zerocopy/blob/v0.8.50/LICENSE-APACHE
https://github.com/google/zerocopy/blob/v0.8.50/LICENSE-MIT
The next two patches modify these files as needed for use within the
kernel. This patch split allows reviewers to double-check the import
and to clearly see the differences introduced.
The following script may be used to verify the contents:
for path in $(cd rust/zerocopy-derive/ && find . -type f); do
curl --silent --show-error --location \
https://github.com/google/zerocopy/raw/v0.8.50/zerocopy-derive/src/$path \
| diff --unified rust/zerocopy-derive/$path - && echo $path: OK
done
Cc: Joshua Liebow-Feeser <joshlf@google.com>
Cc: Jack Wrenn <jswrenn@google.com>
Link: https://patch.msgid.link/20260608141439.182634-14-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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