mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-10-28 21:02:43 +01:00
Wenzhao Liao
da991304c9
Add support for parsing boolean module parameters in the Rust module! macro. Currently, only integer types are supported by the `module_param!` macros. This patch implements the `ModuleParam` trait for `bool` by delegating the string parsing to the existing C implementation via `kstrtobool_bytes()`. It also wires up `PARAM_OPS_BOOL` so that the Rust parameter system correctly links to the C `param_ops_bool` structure. For demonstration and verification, a boolean parameter is added to `samples/rust/rust_minimal.rs`. Support for boolean parameters will initially be used by the Rust null block driver [1]. Link: https://lore.kernel.org/all/[email protected]/ [1] Assisted-by: Codex:GPT-5 Signed-off-by: Wenzhao Liao <[email protected]> Tested-by: Andreas Hindborg <[email protected]> Reviewed-by: Andreas Hindborg <[email protected]> Link: https://lore.kernel.org/linux-modules/[email protected]/ [ppavlu: add motivation to the commit message and rebase the patch] Signed-off-by: Petr Pavlu <[email protected]>
57 lines
1.4 KiB
Rust
57 lines
1.4 KiB
Rust
// SPDX-License-Identifier: GPL-2.0
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//! Rust minimal sample.
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use kernel::prelude::*;
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module! {
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type: RustMinimal,
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name: "rust_minimal",
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authors: ["Rust for Linux Contributors"],
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description: "Rust minimal sample",
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license: "GPL",
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params: {
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test_parameter: i64 {
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default: 1,
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description: "This parameter has a default of 1",
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},
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test_bool_parameter: bool {
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default: false,
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description: "This boolean parameter defaults to false",
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},
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},
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}
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struct RustMinimal {
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numbers: KVec<i32>,
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}
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impl kernel::Module for RustMinimal {
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fn init(_module: &'static ThisModule) -> Result<Self> {
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pr_info!("Rust minimal sample (init)\n");
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pr_info!("Am I built-in? {}\n", !cfg!(MODULE));
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pr_info!(
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"test_parameter: {}\n",
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module_parameters::test_parameter.value()
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);
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pr_info!(
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"test_bool_parameter: {}\n",
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module_parameters::test_bool_parameter.value()
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);
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let mut numbers = KVec::new();
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numbers.push(72, GFP_KERNEL)?;
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numbers.push(108, GFP_KERNEL)?;
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numbers.push(200, GFP_KERNEL)?;
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Ok(RustMinimal { numbers })
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}
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}
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impl Drop for RustMinimal {
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fn drop(&mut self) {
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pr_info!("My numbers are {:?}\n", self.numbers);
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pr_info!("Rust minimal sample (exit)\n");
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}
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}
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