Messages in this thread Patch in this message | | | From | ojeda@kernel ... | Subject | [PATCH 11/17] rust: export generated symbols | Date | Sun, 4 Jul 2021 22:27:50 +0200 |
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From: Miguel Ojeda <ojeda@kernel.org>
All symbols are reexported reusing the `EXPORT_SYMBOL_GPL` macro from C. The lists of symbols are generated on the fly.
There are three main sets of symbols to distinguish:
- The ones from the `core` and `alloc` crates (from the Rust standard library). The code is licensed as Apache/MIT.
- The ones from our abstractions in the `kernel` crate.
- The helpers (already exported since they are not generated).
We export everything as GPL. This ensures we do not mistakenly expose GPL kernel symbols/features as non-GPL, even indirectly.
Co-developed-by: Alex Gaynor <alex.gaynor@gmail.com> Signed-off-by: Alex Gaynor <alex.gaynor@gmail.com> Co-developed-by: Geoffrey Thomas <geofft@ldpreload.com> Signed-off-by: Geoffrey Thomas <geofft@ldpreload.com> Co-developed-by: Finn Behrens <me@kloenk.de> Signed-off-by: Finn Behrens <me@kloenk.de> Co-developed-by: Adam Bratschi-Kaye <ark.email@gmail.com> Signed-off-by: Adam Bratschi-Kaye <ark.email@gmail.com> Co-developed-by: Wedson Almeida Filho <wedsonaf@google.com> Signed-off-by: Wedson Almeida Filho <wedsonaf@google.com> Co-developed-by: Boqun Feng <boqun.feng@gmail.com> Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Co-developed-by: Sumera Priyadarsini <sylphrenadin@gmail.com> Signed-off-by: Sumera Priyadarsini <sylphrenadin@gmail.com> Co-developed-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Co-developed-by: Sven Van Asbroeck <thesven73@gmail.com> Signed-off-by: Sven Van Asbroeck <thesven73@gmail.com> Co-developed-by: Gary Guo <gary@garyguo.net> Signed-off-by: Gary Guo <gary@garyguo.net> Co-developed-by: Boris-Chengbiao Zhou <bobo1239@web.de> Signed-off-by: Boris-Chengbiao Zhou <bobo1239@web.de> Co-developed-by: Fox Chen <foxhlchen@gmail.com> Signed-off-by: Fox Chen <foxhlchen@gmail.com> Co-developed-by: Ayaan Zaidi <zaidi.ayaan@gmail.com> Signed-off-by: Ayaan Zaidi <zaidi.ayaan@gmail.com> Co-developed-by: Douglas Su <d0u9.su@outlook.com> Signed-off-by: Douglas Su <d0u9.su@outlook.com> Co-developed-by: Yuki Okushi <jtitor@2k36.org> Signed-off-by: Yuki Okushi <jtitor@2k36.org> Signed-off-by: Miguel Ojeda <ojeda@kernel.org> --- rust/exports.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 rust/exports.c
diff --git a/rust/exports.c b/rust/exports.c new file mode 100644 index 00000000000..d7dff1b3b91 --- /dev/null +++ b/rust/exports.c @@ -0,0 +1,16 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// A hack to export Rust symbols for loadable modules without having to redo +// the entire `include/linux/export.h` logic in Rust. +// +// This requires the Rust's new/future `v0` mangling scheme because the default +// one ("legacy") uses invalid characters for C identifiers (thus we cannot use +// the `EXPORT_SYMBOL_*` macros). + +#include <linux/module.h> + +#define EXPORT_SYMBOL_RUST_GPL(sym) extern int sym; EXPORT_SYMBOL_GPL(sym); + +#include "exports_core_generated.h" +#include "exports_alloc_generated.h" +#include "exports_kernel_generated.h" -- 2.32.0
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