Add rust lint CI job. (#9)

Additionally fix the many lint errors that are occurring. (or disable them).

Reviewed-on: #9
Co-authored-by: Drew Galbraith <drew@tiramisu.one>
Co-committed-by: Drew Galbraith <drew@tiramisu.one>

rust/sys/denali/src/ahci/command.rs

@@ -95,7 +95,7 @@ impl Command {
             command: SataCommand::DmaReadExt,
             lba,
             sector_cnt: lba_count,
-            paddr: paddr,
+            paddr,
             memory_region: None,
         }
     }

rust/sys/denali/src/ahci/port_controller.rs

@@ -44,9 +44,8 @@ impl PortController {
         };
 
         // This leaves space for 8 prdt entries.
-        for i in 0..32 {
-            command_list[i].command_table_base_addr =
-                (command_paddr + 0x500) + (0x100 * (i as u64));
+        for (i, header) in command_list.iter_mut().enumerate() {
+            header.command_table_base_addr = (command_paddr + 0x500) + (0x100 * (i as u64));
         }
 
         let command_slots = array::from_fn(|_| Arc::new(Mutex::new(CommandStatus::Empty)));

rust/sys/teton/src/framebuffer.rs

@@ -16,15 +16,16 @@ impl Framebuffer {
         })
     }
 
-    fn draw_pixel(&self, row: u32, col: u32, pixel: u32) {
+    fn draw_pixel(&mut self, row: u32, col: u32, pixel: u32) {
         let index = row * (self.fb_info.pitch as u32 / 4) + col;
         self.memory_region.mut_slice()[index as usize] = pixel;
     }
 
-    pub fn draw_glyph(&self, glyph: &[u8], row: u32, col: u32) {
+    pub fn draw_glyph(&mut self, glyph: &[u8], row: u32, col: u32) {
         let gl_width = 8;
         let gl_height = 16;
 
+        #[allow(clippy::needless_range_loop)]
         for r in 0..gl_height {
             for c in 0..gl_width {
                 if ((glyph[r] >> c) % 2) == 1 {

rust/sys/teton/src/psf.rs

@@ -23,7 +23,7 @@ pub struct Psf {
 
 impl Psf {
     pub fn new(path: &str) -> Result<Self, ZError> {
-        let file = File::open(&path)?;
+        let file = File::open(path)?;
 
         let header = file.slice()[0..core::mem::size_of::<PsfHeader>()]
             .as_ptr()

rust/sys/teton/src/terminal.rs

@@ -62,10 +62,8 @@ impl Terminal {
     }
 
     fn write_line(&mut self, line: &str) {
-        let mut col = 0;
-        for c in line.chars() {
-            self.console.write_char(c, self.row, col);
-            col += 1;
+        for (col, c) in line.chars().enumerate() {
+            self.console.write_char(c, self.row, col as u32);
         }
 
         self.row += 1

rust/sys/victoriafalls/src/lib.rs

@@ -12,7 +12,8 @@ static mut VFS_CLIENT: Option<VFSClient> = None;
 
 fn get_client() -> &'static mut VFSClient {
     unsafe {
-        if let None = VFS_CLIENT {
+        #[allow(static_mut_refs)]
+        if VFS_CLIENT.is_none() {
             let endpoint_cap = yellowstone_yunq::from_init_endpoint()
                 .get_endpoint(&yellowstone_yunq::GetEndpointRequest {
                     endpoint_name: "victoriafalls".to_string(),
@@ -21,6 +22,7 @@ fn get_client() -> &'static mut VFSClient {
 
             VFS_CLIENT = Some(VFSClient::new(Capability::take(endpoint_cap.endpoint)));
         }
+        #[allow(static_mut_refs)]
         VFS_CLIENT.as_mut().unwrap()
     }
 }

rust/sys/victoriafalls/src/server.rs

@@ -35,7 +35,7 @@ impl VFSServerHandler for VictoriaFallsServerImpl {
 
         let mut inode_num = 2; // Start with root.
 
-        while let Some(path_token) = tokens.next() {
+        for path_token in tokens {
             inode_num = self.find_path_in_dir(inode_num, path_token)?;
         }
 
@@ -57,7 +57,7 @@ impl VFSServerHandler for VictoriaFallsServerImpl {
 
         let mut inode_num = 2; // Start with root.
 
-        while let Some(path_token) = tokens.next() {
+        for path_token in tokens {
             inode_num = self.find_path_in_dir(inode_num, path_token)?;
         }
 

rust/sys/yellowstone/src/server.rs

@@ -57,9 +57,8 @@ impl YellowstoneServerContext {
 
     pub fn wait(&self, service: &str) -> Result<(), ZError> {
         loop {
-            match self.service_map.lock().get(service) {
-                Some(_) => return Ok(()),
-                None => {}
+            if self.service_map.lock().get(service).is_some() {
+                return Ok(());
             }
             self.registration_semaphore.wait().unwrap();
         }