Switch modinfo from &str to &[u8] using const fn .as_bytes()

Author: TheDan64

hello-world/src/lib.rs

@@ -1,5 +1,5 @@
 #![no_std]
-#![feature(alloc)]
+#![feature(alloc, const_str_as_bytes)]
 
 extern crate alloc;
 use alloc::borrow::ToOwned;
@@ -27,6 +27,7 @@ impl Drop for HelloWorldModule {
         println!("Goodbye kernel module!");
     }
 }
+
 kernel_module!(
     HelloWorldModule,
     author: "Alex Gaynor and Geoffrey Thomas",

src/lib.rs

@@ -60,9 +60,9 @@ macro_rules! kernel_module {
         #[link_section = ".modinfo"]
         #[allow(non_upper_case_globals)]
         // TODO: Generate a name the same way the kernel's `__MODULE_INFO` does.
-        // TODO: This needs to be a `&'static [u8]`, since the kernel defines this as a
-        // `const char []`.
-        pub static $name: &'static str = concat!(stringify!($name), "=", $value);
+        // TODO: This needs to be a `[u8; _]`, since the kernel defines this as a  `const char []`.
+        // See https://github.com/rust-lang/rfcs/pull/2545
+        pub static $name: &'static [u8] = concat!(stringify!($name), "=", $value, '\0').as_bytes();
     };
 }
 

tests/printk/src/lib.rs

@@ -1,4 +1,5 @@
 #![no_std]
+#![feature(const_str_as_bytes)]
 
 #[macro_use]
 extern crate linux_kernel_module;

tests/sysctl/src/lib.rs

@@ -1,4 +1,5 @@
 #![no_std]
+#![feature(const_str_as_bytes)]
 
 use core::sync::atomic::AtomicBool;