rust_minimal.rs

 1// SPDX-License-Identifier: GPL-2.0
 2
 3//! Rust minimal sample.
 4
 5use kernel::prelude::*;
 6
 7module! {
 8    type: RustMinimal,
 9    name: "rust_minimal",
10    authors: ["Rust for Linux Contributors"],
11    description: "Rust minimal sample",
12    license: "GPL",
13    params: {
14        test_parameter: i64 {
15            default: 1,
16            description: "This parameter has a default of 1",
17        },
18    },
19}
20
21struct RustMinimal {
22    numbers: KVec<i32>,
23}
24
25impl kernel::Module for RustMinimal {
26    fn init(_module: &'static ThisModule) -> Result<Self> {
27        pr_info!("Rust minimal sample (init)\n");
28        pr_info!("Am I built-in? {}\n", !cfg!(MODULE));
29        pr_info!(
30            "test_parameter: {}\n",
31            *module_parameters::test_parameter.value()
32        );
33
34        let mut numbers = KVec::new();
35        numbers.push(72, GFP_KERNEL)?;
36        numbers.push(108, GFP_KERNEL)?;
37        numbers.push(200, GFP_KERNEL)?;
38
39        Ok(RustMinimal { numbers })
40    }
41}
42
43impl Drop for RustMinimal {
44    fn drop(&mut self) {
45        pr_info!("My numbers are {:?}\n", self.numbers);
46        pr_info!("Rust minimal sample (exit)\n");
47    }
48}