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| author | Miguel Ojeda <ojeda@kernel.org> | 2021-07-03 17:18:23 +0200 |
|---|---|---|
| committer | Miguel Ojeda <ojeda@kernel.org> | 2022-09-28 08:59:52 +0200 |
| commit | 8fcbf024920b96cd8c59f85d57d97af7237237b4 (patch) | |
| tree | 1a255540720736d6857e21304bbf5cc59870e04f /rust/exports.c | |
| parent | rust: add `kernel` crate (diff) | |
| download | linux-8fcbf024920b96cd8c59f85d57d97af7237237b4.tar.xz linux-8fcbf024920b96cd8c59f85d57d97af7237237b4.zip | |
rust: export generated symbols
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.
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Co-developed-by: Alex Gaynor <alex.gaynor@gmail.com>
Signed-off-by: Alex Gaynor <alex.gaynor@gmail.com>
Co-developed-by: Wedson Almeida Filho <wedsonaf@google.com>
Signed-off-by: Wedson Almeida Filho <wedsonaf@google.com>
Co-developed-by: Björn Roy Baron <bjorn3_gh@protonmail.com>
Signed-off-by: Björn Roy Baron <bjorn3_gh@protonmail.com>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'rust/exports.c')
| -rw-r--r-- | rust/exports.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/rust/exports.c b/rust/exports.c new file mode 100644 index 000000000000..bb7cc64cecd0 --- /dev/null +++ b/rust/exports.c @@ -0,0 +1,21 @@ +// 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). + * + * All symbols are exported as GPL-only to guarantee no GPL-only feature is + * accidentally exposed. + */ + +#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_bindings_generated.h" +#include "exports_kernel_generated.h" |