Cargo.lock

@@ -2,17 +2,6 @@
 # It is not intended for manual editing.
 version = 3
 
-[[package]]
-name = "async-trait"
-version = "0.1.60"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "677d1d8ab452a3936018a687b20e6f7cf5363d713b732b8884001317b0e48aa3"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "atomic-polyfill"
 version = "0.1.11"
@@ -157,7 +146,6 @@ dependencies = [
 name = "julios"
 version = "0.1.0"
 dependencies = [
- "async-trait",
  "conquer-once",
  "crossbeam-queue",
  "futures-util",

Cargo.toml

@@ -19,7 +19,6 @@ linked_list_allocator = "0.9.0"
 postcard = "1.0.0"
 serde = { version = "1.0", default-features = false, features = ["alloc"] }
 heapless = "0.7.16"
-async-trait = "0.1.60"
 
 [dependencies.lazy_static]
 version = "1.0"

src/drivers/atapi/mod.rs

@@ -8,6 +8,7 @@ use interrupt::{INTERRUPT_FUTURE};
 use core::convert::TryInto;
 
 use lazy_static::lazy_static;
+use spin::Mutex;
 use crate::utils::AsyncMutex;
 use x86_64::instructions::port::Port;
 

src/fd/mod.rs

@@ -1,43 +0,0 @@
-use crate::utils::AsyncMutex;
-
-use alloc::{collections::BTreeMap, sync::Arc, boxed::Box};
-use async_trait::async_trait;
-use core::cell::RefCell;
-use lazy_static::lazy_static;
-
-pub type FDt = Arc<RefCell<dyn FileDescriptor>>;
-
-lazy_static! {
-    pub static ref FD_TABLE: AsyncMutex<FDTable> = {
-        AsyncMutex::new(FDTable::new())
-    };
-}
-
-pub struct FDId(u64);
-
-impl FDId {
-    pub fn new() -> Self {
-        // TODO: search for first available fd
-        FDId(1)
-    }
-}
-
-pub struct FDTable {
-    table: BTreeMap<FDId, FDt>,
-}
-
-impl FDTable {
-    pub fn new() -> Self {
-        FDTable { table: BTreeMap::new() }
-    }
-
-    pub fn register_fd(&mut self, fd: FDt) {
-        // TODO
-    }
-}
-
-#[async_trait]
-pub trait FileDescriptor {
-    async fn write(&mut self, buf: &[u8], count: usize) -> isize;
-    async fn read(&mut self, buf: &[u8], count: usize) -> isize;
-}

src/fs/iso/fd.rs

@@ -1,30 +0,0 @@
-use crate::println;
-use crate::fd::{FDId, FileDescriptor, FDt};
-
-use alloc::{sync::Arc, boxed::Box};
-use async_trait::async_trait;
-use core::cell::RefCell;
-
-pub struct IsoFD {
-    pub fd: FDId,
-}
-
-impl IsoFD {
-    pub fn new() -> FDt {
-        Arc::new(RefCell::new(IsoFD {
-            fd: FDId::new(),
-        }))
-    }
-}
-
-#[async_trait]
-impl FileDescriptor for IsoFD {
-    async fn write(&mut self, buf: &[u8], count: usize) -> isize {
-        0
-    }
-
-    async fn read(&mut self, buf: &[u8], count: usize) -> isize {
-        println!("Read from fd");
-        0
-    }
-}

src/fs/iso/iso9660.rs

@@ -3,14 +3,12 @@ const ISO_BLOCK_SIZE: usize = 2048;
 // Twin values structs
 
 #[repr(C, packed)]
-#[derive(Copy, Clone)]
 pub struct MultiEndian32 {
     le: u32, // Little endian value
     be: u32, // Big endian value
 }
 
 #[repr(C, packed)]
-#[derive(Copy, Clone)]
 pub struct MultiEndian16 {
     le: u16, // Little endian value
     be: u16, // Big endian value
@@ -20,7 +18,6 @@ pub struct MultiEndian16 {
 // Path table structure
 
 #[repr(C, packed)]
-#[derive(Copy, Clone)]
 struct IsoPathTable {
     idf_len: u8, // Identifier name length
     ext_size: u8, // Extended attribute record length
@@ -44,7 +41,6 @@ impl IsoPathTable {
 const ISO_DATE_LEN: usize = 7;
 
 #[repr(u8)]
-#[derive(Copy, Clone)]
 enum IsoFileType {
     HIDDEN = 0x1, // Hidden file
     ISDIR = 0x2, // Directory
@@ -55,7 +51,6 @@ enum IsoFileType {
 }
 
 #[repr(C, packed)]
-#[derive(Copy, Clone)]
 pub struct IsoDir {
     dir_size: u8, // Length of directory record
     ext_size: u8, // Length of extended attribute record
@@ -99,7 +94,6 @@ const ISO_BIBFIL_LEN: usize = 37;
 const ISO_LDATE_LEN: usize = 17;
 
 #[repr(C, packed)]
-#[derive(Copy, Clone)]
 pub struct IsoPrimVolDesc {
     pub vol_desc_type: u8, // Volume descripto type (1)
     pub std_identifier: [u8; 5], // standard identifier ("CD001")

src/fs/iso/mod.rs

@@ -1,15 +1,11 @@
 pub mod iso9660;
-mod fd;
 
 use crate::println;
 use crate::drivers::atapi::{DRIVE};
-use crate::fd::{FD_TABLE, FDt};
 use crate::utils::unserialize;
-
 use iso9660::{IsoPrimVolDesc};
-use fd::IsoFD;
 
-pub async fn get_prim_vol_desc() -> IsoPrimVolDesc {
+pub async fn init_prim_vol_desc() {
     let desc_block = DRIVE
         .lock()
         .await
@@ -17,11 +13,7 @@ pub async fn get_prim_vol_desc() -> IsoPrimVolDesc {
         .unwrap()
         .read_block(iso9660::ISO_PRIM_VOLDESC_BLOCK)
         .await;
-    *unserialize::<IsoPrimVolDesc>(desc_block.as_ptr())
-}
+    let prim_vol_desc: &IsoPrimVolDesc = unserialize::<IsoPrimVolDesc>(desc_block.as_ptr());
 
-pub async fn open() -> FDt {
-    let fd = IsoFD::new();
-    FD_TABLE.lock().await.register_fd(fd.clone());
-    fd
+    println!("{:?}", alloc::string::String::from_utf8_lossy(&prim_vol_desc.std_identifier));
 }

src/lib.rs

@@ -9,7 +9,6 @@ mod memory;
 mod task;
 mod fs;
 mod utils;
-mod fd;
 
 //#[macro_use]
 extern crate alloc;
@@ -58,12 +57,6 @@ pub extern "C" fn julios_main(multiboot_info_addr: usize) -> ! {
     let mut executor = Executor::new();
     executor.spawn(Task::new(drivers::atapi::init()));
     executor.spawn(Task::new(keyboard::print_keypresses()));
-    executor.spawn(Task::new(get_file()));
+    executor.spawn(Task::new(fs::iso::init_prim_vol_desc()));
     executor.run();
 }
-
-
-async fn get_file() {
-    let fd = fs::iso::open().await;
-    fd.borrow_mut().read(&[], 0).await;
-}