Array and string params

.github/workflows/ci.yaml

@@ -165,7 +165,11 @@ jobs:
             -smp 2 \
             -nographic \
             -no-reboot \
-            -append '${{ env.QEMU_APPEND }} rust_example.my_i32=123321 rust_example.my_str=🦀mod rust_example_2.my_i32=234432' \
+            -append '${{ env.QEMU_APPEND }} \
+              rust_example.my_i32=123321 \
+              rust_example.my_str=🦀mod \
+              rust_example_2.my_i32=234432 \
+              rust_example_2.my_array=1,2,3' \
             | sed s:$'\r'$:: \
             | tee qemu-stdout.log
 
@@ -191,6 +195,11 @@ jobs:
           grep '] \[3]   my_str:     🦀mod$'           qemu-stdout.log
           grep '] \[4]   my_str:     default str val$' qemu-stdout.log
 
+          grep      ']   my_array:   \[0, 1]$'    qemu-stdout.log
+          grep '] \[2]   my_array:   \[1, 2, 3]$' qemu-stdout.log
+          grep '] \[3]   my_array:   \[0, 1]$'    qemu-stdout.log
+          grep '] \[4]   my_array:   \[1, 2, 3]$' qemu-stdout.log
+
           grep '] \[3] Rust Example (exit)$' qemu-stdout.log
           grep '] \[4] Rust Example (exit)$' qemu-stdout.log
 

.github/workflows/qemu-init.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 busybox insmod rust_example_3.ko my_i32=345543 my_str=🦀mod
-busybox insmod rust_example_4.ko my_i32=456654 my_usize=84
+busybox insmod rust_example_4.ko my_i32=456654 my_usize=84 my_array=1,2,3
 busybox  rmmod rust_example_3.ko
 busybox  rmmod rust_example_4.ko
 

drivers/char/rust_example.rs

@@ -43,6 +43,11 @@ module! {
             permissions: 0o644,
             description: b"Example of usize",
         },
+        my_array: ArrayParam<i32, 3> {
+            default: [0, 1],
+            permissions: 0,
+            description: b"Example of array",
+        },
     },
 }
 
@@ -79,6 +84,7 @@ impl KernelModule for RustExample {
                 core::str::from_utf8(my_str.read(&lock))?
             );
             println!("  my_usize:   {}", my_usize.read(&lock));
+            println!("  my_array:   {:?}", my_array.read());
         }
 
         // Test mutexes.

drivers/char/rust_example_2.rs

@@ -33,6 +33,11 @@ module! {
             permissions: 0o644,
             description: b"Example of usize",
         },
+        my_array: ArrayParam<i32, 3> {
+            default: [0, 1],
+            permissions: 0,
+            description: b"Example of array",
+        },
     },
 }
 
@@ -54,6 +59,7 @@ impl KernelModule for RustExample2 {
                 core::str::from_utf8(my_str.read(&lock))?
             );
             println!("[2]   my_usize:   {}", my_usize.read(&lock));
+            println!("[2]   my_array:   {:?}", my_array.read());
         }
 
         // Including this large variable on the stack will trigger

drivers/char/rust_example_3.rs

@@ -33,6 +33,11 @@ module! {
             permissions: 0o644,
             description: b"Example of usize",
         },
+        my_array: ArrayParam<i32, 3> {
+            default: [0, 1],
+            permissions: 0,
+            description: b"Example of array",
+        },
     },
 }
 
@@ -54,6 +59,7 @@ impl KernelModule for RustExample3 {
                 core::str::from_utf8(my_str.read(&lock))?
             );
             println!("[3]   my_usize:   {}", my_usize.read(&lock));
+            println!("[3]   my_array:   {:?}", my_array.read());
         }
 
         // Including this large variable on the stack will trigger

drivers/char/rust_example_4.rs

@@ -33,6 +33,11 @@ module! {
             permissions: 0o644,
             description: b"Example of usize",
         },
+        my_array: ArrayParam<i32, 3> {
+            default: [0, 1],
+            permissions: 0,
+            description: b"Example of array",
+        },
     },
 }
 
@@ -54,6 +59,7 @@ impl KernelModule for RustExample4 {
                 core::str::from_utf8(my_str.read(&lock))?
             );
             println!("[4]   my_usize:   {}", my_usize.read(&lock));
+            println!("[4]   my_array:   {:?}", my_array.read());
         }
 
         // Including this large variable on the stack will trigger

rust/kernel/lib.rs

@@ -12,7 +12,7 @@
 //! do so first instead of bypassing this crate.
 
 #![no_std]
-#![feature(allocator_api, alloc_error_handler)]
+#![feature(allocator_api, alloc_error_handler, const_fn, const_mut_refs)]
 #![deny(clippy::complexity)]
 #![deny(clippy::correctness)]
 #![deny(clippy::perf)]
@@ -36,7 +36,10 @@ pub mod chrdev;
 mod error;
 pub mod file_operations;
 pub mod miscdev;
+
+#[doc(hidden)]
 pub mod module_param;
+
 pub mod prelude;
 pub mod printk;
 pub mod random;