linux-stable/samples/rust/rust_minimal.rs
Gary Guo b13c9880f9 rust: macros: take string literals in module!
Instead of taking binary string literals, take string ones instead,
making it easier for users to define a module, i.e. instead of
calling `module!` like:

    module! {
        ...
        name: b"rust_minimal",
        ...
    }

now it is called as:

    module! {
        ...
        name: "rust_minimal",
        ...
    }

Module names, aliases and license strings are restricted to
ASCII only. However, the author and the description allows UTF-8.

For simplicity (avoid parsing), escape sequences and raw string
literals are not yet handled.

Link: https://github.com/Rust-for-Linux/linux/issues/252
Link: https://lore.kernel.org/lkml/YukvvPOOu8uZl7+n@yadro.com/
Signed-off-by: Gary Guo <gary@garyguo.net>
[Reworded, adapted for upstream and applied latest changes]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2022-12-04 01:59:15 +01:00

38 lines
852 B
Rust

// SPDX-License-Identifier: GPL-2.0
//! Rust minimal sample.
use kernel::prelude::*;
module! {
type: RustMinimal,
name: "rust_minimal",
author: "Rust for Linux Contributors",
description: "Rust minimal sample",
license: "GPL",
}
struct RustMinimal {
numbers: Vec<i32>,
}
impl kernel::Module for RustMinimal {
fn init(_module: &'static ThisModule) -> Result<Self> {
pr_info!("Rust minimal sample (init)\n");
pr_info!("Am I built-in? {}\n", !cfg!(MODULE));
let mut numbers = Vec::new();
numbers.try_push(72)?;
numbers.try_push(108)?;
numbers.try_push(200)?;
Ok(RustMinimal { numbers })
}
}
impl Drop for RustMinimal {
fn drop(&mut self) {
pr_info!("My numbers are {:?}\n", self.numbers);
pr_info!("Rust minimal sample (exit)\n");
}
}