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| author | Danilo Krummrich <dakr@kernel.org> | 2024-12-19 20:04:03 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-20 19:19:25 +0300 |
| commit | a790265c7f663c382ac25ecb841e241a023f0590 (patch) | |
| tree | aacf999532ee25bc00a1f1bced7a9dd11277f13a | |
| parent | 5bcc8bfe841b29f7d62f4bb7738bb085ecc51aad (diff) | |
| download | linux-a790265c7f663c382ac25ecb841e241a023f0590.tar.xz | |
rust: module: add trait `ModuleMetadata`
In order to access static metadata of a Rust kernel module, add the
`ModuleMetadata` trait.
In particular, this trait provides the name of a Rust kernel module as
specified by the `module!` macro.
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>
Tested-by: Fabien Parent <fabien.parent@linaro.org>
Link: https://lore.kernel.org/r/20241219170425.12036-2-dakr@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | rust/kernel/lib.rs | 6 | ||||
| -rw-r--r-- | rust/macros/module.rs | 4 |
2 files changed, 10 insertions, 0 deletions
diff --git a/rust/kernel/lib.rs b/rust/kernel/lib.rs index e1065a7551a3..61b82b78b915 100644 --- a/rust/kernel/lib.rs +++ b/rust/kernel/lib.rs @@ -116,6 +116,12 @@ impl<T: Module> InPlaceModule for T { } } +/// Metadata attached to a [`Module`] or [`InPlaceModule`]. +pub trait ModuleMetadata { + /// The name of the module as specified in the `module!` macro. + const NAME: &'static crate::str::CStr; +} + /// Equivalent to `THIS_MODULE` in the C API. /// /// C header: [`include/linux/init.h`](srctree/include/linux/init.h) diff --git a/rust/macros/module.rs b/rust/macros/module.rs index 2587f41b0d39..cdf94f4982df 100644 --- a/rust/macros/module.rs +++ b/rust/macros/module.rs @@ -228,6 +228,10 @@ pub(crate) fn module(ts: TokenStream) -> TokenStream { kernel::ThisModule::from_ptr(core::ptr::null_mut()) }}; + impl kernel::ModuleMetadata for {type_} {{ + const NAME: &'static kernel::str::CStr = kernel::c_str!(\"{name}\"); + }} + // Double nested modules, since then nobody can access the public items inside. mod __module_init {{ mod __module_init {{ |