Add multiple author support to module!

Change author into authors, allowing multiple authors of a module.

Signed-off-by: wcampbell <[email protected]>

Author: wcampbell0x2a

drivers/android/rust_binder.rs

@@ -28,7 +28,7 @@ use {context::Context, thread::Thread};
 module! {
     type: BinderModule,
     name: "rust_binder",
-    author: "Wedson Almeida Filho",
+    authors: ["Wedson Almeida Filho"],
     description: "Android Binder",
     license: "GPL",
 }

rust/macros/helpers.rs

@@ -10,6 +10,14 @@ pub(crate) fn try_ident(it: &mut token_stream::IntoIter) -> Option<String> {
     }
 }
 
+pub(crate) fn try_punct(it: &mut token_stream::IntoIter) -> Option<char> {
+    if let Some(TokenTree::Punct(punct)) = it.next() {
+        Some(punct.as_char())
+    } else {
+        None
+    }
+}
+
 pub(crate) fn try_literal(it: &mut token_stream::IntoIter) -> Option<String> {
     if let Some(TokenTree::Literal(literal)) = it.next() {
         Some(literal.to_string())

rust/macros/module.rs

@@ -215,7 +215,7 @@ struct ModuleInfo {
     type_: String,
     license: String,
     name: String,
-    author: Option<String>,
+    authors: Option<Vec<String>>,
     description: Option<String>,
     alias: Option<String>,
     params: Option<Group>,
@@ -228,7 +228,7 @@ impl ModuleInfo {
         const EXPECTED_KEYS: &[&str] = &[
             "type",
             "name",
-            "author",
+            "authors",
             "description",
             "license",
             "alias",
@@ -257,7 +257,7 @@ impl ModuleInfo {
             match key.as_str() {
                 "type" => info.type_ = expect_ident(it),
                 "name" => info.name = expect_string_ascii(it),
-                "author" => info.author = Some(expect_string(it)),
+                "authors" => info.authors = Some(Self::parse_authors(it)),
                 "description" => info.description = Some(expect_string(it)),
                 "license" => info.license = expect_string_ascii(it),
                 "alias" => info.alias = Some(expect_string_ascii(it)),
@@ -300,6 +300,26 @@ impl ModuleInfo {
 
         info
     }
+
+    /// Parse ["First", "Second"] into Some(vec!["First", "Second"])
+    fn parse_authors(it: &mut token_stream::IntoIter) -> Vec<String> {
+        let mut authors: Vec<String> = vec![];
+        let group = expect_group(it);
+        assert_eq!(group.delimiter(), Delimiter::Bracket);
+        let mut stream = group.stream().into_iter();
+        loop {
+            let author = expect_string(&mut stream);
+            authors.push(author);
+            if let Some(punct) = try_punct(&mut stream) {
+                assert_eq!(punct, ',');
+            } else {
+                assert!(stream.next().is_none());
+                break;
+            }
+        }
+
+        authors
+    }
 }
 
 pub(crate) fn module(ts: TokenStream) -> TokenStream {
@@ -308,8 +328,10 @@ pub(crate) fn module(ts: TokenStream) -> TokenStream {
     let info = ModuleInfo::parse(&mut it);
 
     let mut modinfo = ModInfoBuilder::new(info.name.as_ref());
-    if let Some(author) = info.author {
-        modinfo.emit("author", &author);
+    if let Some(authors) = &info.authors {
+        for author in authors {
+            modinfo.emit("author", author);
+        }
     }
     if let Some(description) = info.description {
         modinfo.emit("description", &description);

samples/rust/rust_chrdev.rs

@@ -8,7 +8,7 @@ use kernel::{chrdev, file};
 module! {
     type: RustChrdev,
     name: "rust_chrdev",
-    author: "Rust for Linux Contributors",
+    authors: ["Rust for Linux Contributors"],
     description: "Rust character device sample",
     license: "GPL",
 }

samples/rust/rust_echo_server.rs

@@ -54,7 +54,7 @@ impl kernel::Module for RustEchoServer {
 module! {
     type: RustEchoServer,
     name: "rust_echo_server",
-    author: "Rust for Linux Contributors",
+    authors: ["Rust for Linux Contributors"],
     description: "Rust tcp echo sample",
     license: "GPL v2",
 }

samples/rust/rust_fs.rs

@@ -8,7 +8,7 @@ use kernel::{c_str, fs};
 module_fs! {
     type: RustFs,
     name: "rust_fs",
-    author: "Rust for Linux Contributors",
+    authors: ["Rust for Linux Contributors",
     license: "GPL",
 }
 

samples/rust/rust_minimal.rs

@@ -7,7 +7,7 @@ use kernel::prelude::*;
 module! {
     type: RustMinimal,
     name: "rust_minimal",
-    author: "Rust for Linux Contributors",
+    authors: ["Rust for Linux Contributors"],
     description: "Rust minimal sample",
     license: "GPL",
 }

samples/rust/rust_miscdev.rs

@@ -13,7 +13,7 @@ use kernel::{
 module! {
     type: RustMiscdev,
     name: "rust_miscdev",
-    author: "Rust for Linux Contributors",
+    authors: ["Rust for Linux Contributors"],
     description: "Rust miscellaneous device sample",
     license: "GPL",
 }

samples/rust/rust_module_parameters.rs

@@ -7,7 +7,7 @@ use kernel::prelude::*;
 module! {
     type: RustModuleParameters,
     name: "rust_module_parameters",
-    author: "Rust for Linux Contributors",
+    authors: ["Rust for Linux Contributors"],
     description: "Rust module parameters sample",
     license: "GPL",
     params: {

samples/rust/rust_print.rs

@@ -8,7 +8,7 @@ use kernel::{pr_cont, str::CStr, ThisModule};
 module! {
     type: RustPrint,
     name: "rust_print",
-    author: "Rust for Linux Contributors",
+    authors: ["Rust for Linux Contributors"],
     description: "Rust printing macros sample",
     license: "GPL",
 }

samples/rust/rust_random.rs

@@ -14,7 +14,7 @@ use kernel::{
 module_misc_device! {
     type: RandomFile,
     name: "rust_random",
-    author: "Rust for Linux Contributors",
+    authors: ["Rust for Linux Contributors"],
     description: "Just use /dev/urandom: Now with early-boot safety",
     license: "GPL",
 }

samples/rust/rust_selftests.rs

@@ -9,7 +9,7 @@ use kernel::prelude::*;
 module! {
     type: RustSelftests,
     name: "rust_selftests",
-    author: "Rust for Linux Contributors",
+    authors: ["Rust for Linux Contributors"],
     description: "Self test cases for Rust",
     license: "GPL",
 }

samples/rust/rust_semaphore.rs

@@ -28,7 +28,7 @@ use kernel::{
 module! {
     type: RustSemaphore,
     name: "rust_semaphore",
-    author: "Rust for Linux Contributors",
+    authors: ["Rust for Linux Contributors"],
     description: "Rust semaphore sample",
     license: "GPL",
 }

samples/rust/rust_stack_probing.rs

@@ -7,7 +7,7 @@ use kernel::prelude::*;
 module! {
     type: RustStackProbing,
     name: "rust_stack_probing",
-    author: "Rust for Linux Contributors",
+    authors: ["Rust for Linux Contributors"],
     description: "Rust stack probing sample",
     license: "GPL",
 }

samples/rust/rust_sync.rs

@@ -11,7 +11,7 @@ use kernel::{
 module! {
     type: RustSync,
     name: "rust_sync",
-    author: "Rust for Linux Contributors",
+    authors: ["Rust for Linux Contributors"],
     description: "Rust synchronisation primitives sample",
     license: "GPL",
 }