Re: [PATCH v2 2/3] rust: configfs: introduce rust support for configfs

[Charalampos Mitrodimas <charmitro@posteo.net>]

Andreas Hindborg <a.hindborg@kernel.org> writes:

> diff --git a/samples/rust/rust_configfs.rs b/samples/rust/rust_configfs.rs
> new file mode 100644
> index 0000000000000..fe896e66efb41
> --- /dev/null
> +++ b/samples/rust/rust_configfs.rs
> @@ -0,0 +1,186 @@
> +// SPDX-License-Identifier: GPL-2.0
> +
> +//! Rust configfs sample.
> +
> +use kernel::alloc::flags;
> +use kernel::c_str;

[...snip...]

> +impl Configuration {
> +    fn new() -> impl PinInit<Self, Error> {
> +        try_pin_init!(Self {
> +            message: c_str!("Hello World\n"),
> +            bar <- new_mutex!((KBox::new([0;4096], flags::GFP_KERNEL)?,0)),
> +        })
> +    }
> +}
> +
> +impl kernel::InPlaceModule for RustConfigfs {
> +    fn init(_module: &'static ThisModule) -> impl PinInit<Self, Error> {
> +        pr_info!("Rust configfs sample (init)\n");
> +
> +        let item_type = configfs_attrs! {
> +            container: configfs::Subsystem<Configuration>,
> +            data: Configuration,
> +            child: Child,
> +            attributes: [
> +                message: 0,
> +                bar: 1,
> +            ],
> +        };
> +
> +        try_pin_init!(Self {
> +            config <- configfs::Subsystem::new(
> +                kernel::c_str!("rust_configfs"), item_type, Configuration::new()

Hi Andreas,

One more nit I found, "kernel::c_str" is already imported in the
sample. So this can be changed to "c_str!("rust_configfs")".

C. Mitrodimas

> +            ),
> +        })
> +    }
> +}
> +