rust: zerocopy-derive: add SPDX License Identifiers

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>

9 files changed, 18 insertions, 0 deletions

diff --git a/rust/zerocopy-derive/derive/from_bytes.rs b/rust/zerocopy-derive/derive/from_bytes.rs
index ad8b6233fe54..d693a63b7645 100644
--- a/rust/zerocopy-derive/derive/from_bytes.rs
+++ b/rust/zerocopy-derive/derive/from_bytes.rs
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
+
 use proc_macro2::{Span, TokenStream};
 use syn::{
     parse_quote, Data, DataEnum, DataStruct, DataUnion, Error, Expr, ExprLit, ExprUnary, Lit, UnOp,
diff --git a/rust/zerocopy-derive/derive/into_bytes.rs b/rust/zerocopy-derive/derive/into_bytes.rs
index 8c1e1009dd91..ad52a6b45d28 100644
--- a/rust/zerocopy-derive/derive/into_bytes.rs
+++ b/rust/zerocopy-derive/derive/into_bytes.rs
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
+
 use proc_macro2::{Span, TokenStream};
 use quote::quote;
 use syn::{Data, DataEnum, DataStruct, DataUnion, Error, Type};
diff --git a/rust/zerocopy-derive/derive/known_layout.rs b/rust/zerocopy-derive/derive/known_layout.rs
index b91b4de0098c..fddffd167c82 100644
--- a/rust/zerocopy-derive/derive/known_layout.rs
+++ b/rust/zerocopy-derive/derive/known_layout.rs
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
+
 use proc_macro2::TokenStream;
 use quote::quote;
 use syn::{parse_quote, Data, Error, Type};
diff --git a/rust/zerocopy-derive/derive/mod.rs b/rust/zerocopy-derive/derive/mod.rs
index a3d066ed2b4d..665ba7da55a8 100644
--- a/rust/zerocopy-derive/derive/mod.rs
+++ b/rust/zerocopy-derive/derive/mod.rs
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
+
 pub mod from_bytes;
 pub mod into_bytes;
 pub mod known_layout;
diff --git a/rust/zerocopy-derive/derive/try_from_bytes.rs b/rust/zerocopy-derive/derive/try_from_bytes.rs
index 4e36ab40bcf8..ce9c926d5b8e 100644
--- a/rust/zerocopy-derive/derive/try_from_bytes.rs
+++ b/rust/zerocopy-derive/derive/try_from_bytes.rs
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
+
 use proc_macro2::TokenStream;
 use quote::quote;
 use syn::{
diff --git a/rust/zerocopy-derive/derive/unaligned.rs b/rust/zerocopy-derive/derive/unaligned.rs
index 819d84984a03..d6dea0a11f1e 100644
--- a/rust/zerocopy-derive/derive/unaligned.rs
+++ b/rust/zerocopy-derive/derive/unaligned.rs
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
+
 use proc_macro2::{Span, TokenStream};
 use syn::{Data, DataEnum, DataStruct, DataUnion, Error};
 
diff --git a/rust/zerocopy-derive/lib.rs b/rust/zerocopy-derive/lib.rs
index a1d10a2ada27..c517ea7db1eb 100644
--- a/rust/zerocopy-derive/lib.rs
+++ b/rust/zerocopy-derive/lib.rs
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
+
 // Copyright 2019 The Fuchsia Authors
 //
 // Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
diff --git a/rust/zerocopy-derive/repr.rs b/rust/zerocopy-derive/repr.rs
index 57014b38b2da..74fd376d9fda 100644
--- a/rust/zerocopy-derive/repr.rs
+++ b/rust/zerocopy-derive/repr.rs
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
+
 // Copyright 2019 The Fuchsia Authors
 //
 // Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
diff --git a/rust/zerocopy-derive/util.rs b/rust/zerocopy-derive/util.rs
index 4ec28bf95758..5ba5228e2a44 100644
--- a/rust/zerocopy-derive/util.rs
+++ b/rust/zerocopy-derive/util.rs
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: (BSD-2-Clause OR Apache-2.0) OR MIT
+
 // Copyright 2019 The Fuchsia Authors
 //
 // Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0