xref: /linux/rust/exports.c (revision 60684c2bd35064043360e6f716d1b7c20e967b7d)
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * A hack to export Rust symbols for loadable modules without having to redo
4  * the entire `include/linux/export.h` logic in Rust.
5  *
6  * This requires the Rust's new/future `v0` mangling scheme because the default
7  * one ("legacy") uses invalid characters for C identifiers (thus we cannot use
8  * the `EXPORT_SYMBOL_*` macros).
9  *
10  * All symbols are exported as GPL-only to guarantee no GPL-only feature is
11  * accidentally exposed.
12  */
13 
14 #include <linux/module.h>
15 
16 #define EXPORT_SYMBOL_RUST_GPL(sym) extern int sym; EXPORT_SYMBOL_GPL(sym)
17 
18 #include "exports_core_generated.h"
19 #include "exports_alloc_generated.h"
20 #include "exports_bindings_generated.h"
21 #include "exports_kernel_generated.h"
22 
23 // For modules using `rust/build_error.rs`.
24 #ifdef CONFIG_RUST_BUILD_ASSERT_ALLOW
25 EXPORT_SYMBOL_RUST_GPL(rust_build_error);
26 #endif
27