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No commits in common. "184030a45e0f8ddc4256bf67d6efbf334f89897c" and "e5eb05eb3db4ad94dc292a94262c49a9df3985d1" have entirely different histories.

18 changed files with 174 additions and 344 deletions

@ -170,7 +170,7 @@ p2_table:
resb 4096 resb 4096
stack_bottom: stack_bottom:
resb 100 * 4096 resb 4 * 4096
stack_top: stack_top:

@ -3,24 +3,26 @@ use core::pin::Pin;
use core::sync::atomic::{AtomicBool, Ordering}; use core::sync::atomic::{AtomicBool, Ordering};
use core::task::{Context, Poll}; use core::task::{Context, Poll};
use futures_util::task::AtomicWaker;
use lazy_static::lazy_static; use lazy_static::lazy_static;
use futures_util::task::AtomicWaker;
lazy_static! { lazy_static! {
pub static ref INTERRUPT_FUTURE: InterruptFuture = InterruptFuture::new(); pub static ref INTERRUPT_FUTURE: InterruptFuture = InterruptFuture::new();
static ref INTERRUPT: AtomicBool = AtomicBool::new(false); static ref INTERRUPT: AtomicBool = AtomicBool::new(false);
} }
static WAKER: AtomicWaker = AtomicWaker::new(); static WAKER: AtomicWaker = AtomicWaker::new();
pub(crate) fn mark_interrupt() { pub(crate) fn mark_interrupt() {
INTERRUPT.store(true, Ordering::Relaxed); INTERRUPT.store(true, Ordering::Relaxed);
WAKER.wake(); WAKER.wake();
} }
#[derive(Copy, Clone)] #[derive(Copy,Clone)]
pub struct InterruptFuture { pub struct InterruptFuture {
_private: (), _private:(),
} }
impl InterruptFuture { impl InterruptFuture {
@ -49,7 +51,7 @@ impl Future for InterruptFuture {
true => { true => {
WAKER.take(); WAKER.take();
Poll::Ready(()) Poll::Ready(())
} },
false => Poll::Pending, false => Poll::Pending,
} }
} }

@ -1,20 +1,20 @@
pub mod interrupt;
mod scsi; mod scsi;
pub mod interrupt;
use crate::{println, serial_println}; use crate::{println, serial_println};
use interrupt::INTERRUPT_FUTURE; use scsi::{SCSIPacket};
use scsi::SCSIPacket; use interrupt::{INTERRUPT_FUTURE};
use core::convert::TryInto; use core::convert::TryInto;
use crate::utils::AsyncMutex;
use lazy_static::lazy_static; use lazy_static::lazy_static;
use crate::utils::AsyncMutex;
use x86_64::instructions::port::Port; use x86_64::instructions::port::Port;
const CD_SECTOR_SIZE: usize = 2048; const CD_SECTOR_SIZE: usize = 2048;
// Data buses // Data buses
const ATA_BUS_PRIMARY: u16 = 0x1f0; const ATA_BUS_PRIMARY: u16= 0x1f0;
const ATA_BUS_SECONDARY: u16 = 0x170; const ATA_BUS_SECONDARY: u16 = 0x170;
// Drives // Drives
@ -54,13 +54,16 @@ static ATAPI_SIG: [u8; 4] = [
ATAPI_SIG_SC, ATAPI_SIG_SC,
ATAPI_SIG_LBA_LO, ATAPI_SIG_LBA_LO,
ATAPI_SIG_LBA_MI, ATAPI_SIG_LBA_MI,
ATAPI_SIG_LBA_HI, ATAPI_SIG_LBA_HI
]; ];
lazy_static! { lazy_static! {
pub static ref DRIVE: AsyncMutex<Option<ATABus>> = AsyncMutex::new(ATABus::discover_atapi_drive()); pub static ref DRIVE: AsyncMutex<Option<ATABus>> = {
AsyncMutex::new(ATABus::discover_atapi_drive())
};
} }
pub async fn init() { pub async fn init() {
println!("Detecting drives"); println!("Detecting drives");
match DRIVE.lock().await.as_ref() { match DRIVE.lock().await.as_ref() {
@ -69,12 +72,12 @@ pub async fn init() {
let drive_type = match drive.current_drive { let drive_type = match drive.current_drive {
ATA_DRIVE_MASTER => "master", ATA_DRIVE_MASTER => "master",
ATA_DRIVE_SLAVE => "slave", ATA_DRIVE_SLAVE => "slave",
_ => "bad", _ => "bad"
}; };
let bus = match drive.base_port { let bus = match drive.base_port {
ATA_BUS_PRIMARY => "primary", ATA_BUS_PRIMARY => "primary",
ATA_BUS_SECONDARY => "secondary", ATA_BUS_SECONDARY => "secondary",
_ => "bad", _ => "bad"
}; };
println!("Detected {} drive on {} bus", drive_type, bus); println!("Detected {} drive on {} bus", drive_type, bus);
} }
@ -201,7 +204,7 @@ impl ATABus {
self.wait_packet_request(); self.wait_packet_request();
for i in (0..raw_packet.len()).step_by(2) { for i in (0..raw_packet.len()).step_by(2) {
let word = u16::from_le_bytes(raw_packet[i..i + 2].try_into().unwrap()); let word = u16::from_le_bytes(raw_packet[i..i+2].try_into().unwrap());
unsafe { unsafe {
self.data.write(word); self.data.write(word);
} }
@ -320,12 +323,9 @@ impl ATABus {
} }
} }
#[allow(dead_code)] #[allow(dead_code)]
pub async fn print_block(lba: u32) { pub async fn print_block(lba: u32) {
let block = DRIVE.lock().await.as_mut().unwrap().read_block(lba).await; let block = DRIVE.lock().await.as_mut().unwrap().read_block(lba).await;
serial_println!("{:x?}", block); serial_println!("{:x?}", block);
} }
pub async fn read_block(lba: u32) -> [u8; CD_SECTOR_SIZE] {
DRIVE.lock().await.as_mut().unwrap().read_block(lba).await
}

@ -1,5 +1,5 @@
use postcard::to_vec; use postcard::{to_vec};
use serde::{Deserialize, Serialize}; use serde::{Serialize, Deserialize};
#[derive(Default, Serialize, Deserialize, Debug, Eq, PartialEq)] #[derive(Default, Serialize, Deserialize, Debug, Eq, PartialEq)]
#[repr(C, packed)] #[repr(C, packed)]
@ -15,7 +15,7 @@ pub struct SCSIPacket {
transfer_length_milo: u8, transfer_length_milo: u8,
transfer_length_lo: u8, transfer_length_lo: u8,
flags_hi: u8, flags_hi: u8,
control: u8, control: u8
} }
impl SCSIPacket { impl SCSIPacket {

@ -1,3 +1,3 @@
pub mod atapi;
pub mod serial; pub mod serial;
pub mod vga; pub mod vga;
pub mod atapi;

@ -1,26 +1,26 @@
use crate::println; use crate::println;
use crate::utils::AsyncMutex; use crate::utils::AsyncMutex;
use alloc::{boxed::Box, collections::BTreeMap, sync::Arc}; use alloc::{collections::BTreeMap, sync::Arc, boxed::Box};
use async_trait::async_trait; use async_trait::async_trait;
use core::cell::RefCell; use core::cell::RefCell;
use core::sync::atomic::{AtomicU32, Ordering};
use lazy_static::lazy_static; use lazy_static::lazy_static;
pub type FDt = Arc<RefCell<dyn FileDescriptor>>; pub type FDt = Arc<RefCell<dyn FileDescriptor>>;
lazy_static! { lazy_static! {
pub static ref FD_TABLE: AsyncMutex<FDTable> = AsyncMutex::new(FDTable::new()); pub static ref FD_TABLE: AsyncMutex<FDTable> = {
AsyncMutex::new(FDTable::new())
};
} }
#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)] #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
pub struct FDId(u32); pub struct FDId(u64);
impl FDId { impl FDId {
pub fn new() -> Self { pub fn new() -> Self {
// TODO: search for first available fd // TODO: search for first available fd
static NEXT_ID: AtomicU32 = AtomicU32::new(0); FDId(1)
FDId(NEXT_ID.fetch_add(1, Ordering::Relaxed))
} }
} }
@ -30,25 +30,13 @@ pub struct FDTable {
impl FDTable { impl FDTable {
pub fn new() -> Self { pub fn new() -> Self {
FDTable { FDTable { table: BTreeMap::new() }
table: BTreeMap::new(),
}
} }
pub fn unregister_fd(&mut self, fd: &dyn FileDescriptor) { pub async fn register_fd(&mut self, fd: FDt) {
self.table.remove(&fd.get_fd()); // TODO
println!(
"Unregistered fd: {:?}",
fd.get_fd()
);
}
pub fn register_fd(&mut self, fd: FDt) {
self.table.insert(fd.borrow().get_fd(), fd.clone()); self.table.insert(fd.borrow().get_fd(), fd.clone());
println!( println!("Registered fd: {:?}", self.table.get(&FDId(1)).unwrap().borrow().get_fd());
"Registered fd: {:?}",
self.table.get(&FDId(0)).unwrap().borrow().get_fd()
);
} }
} }
@ -56,7 +44,5 @@ impl FDTable {
pub trait FileDescriptor { pub trait FileDescriptor {
fn get_fd(&self) -> FDId; fn get_fd(&self) -> FDId;
async fn write(&mut self, buf: &[u8], count: usize) -> isize; async fn write(&mut self, buf: &[u8], count: usize) -> isize;
async fn read(&mut self, buf: &mut [u8], count: usize) -> isize; async fn read(&mut self, buf: &[u8], count: usize) -> isize;
async fn close(&mut self);
async fn lseek(&mut self, offset: i32, whence: u32) -> i32;
} }

@ -1,30 +1,19 @@
use crate::drivers::atapi::read_block; use crate::println;
use crate::fd::{FDId, FDt, FileDescriptor, FD_TABLE}; use crate::fd::{FDId, FileDescriptor, FDt};
use super::iso9660::{IsoDir, ISO_BLOCK_SIZE}; use alloc::{sync::Arc, boxed::Box};
use alloc::{boxed::Box, sync::Arc};
use async_trait::async_trait; use async_trait::async_trait;
use core::cell::RefCell; use core::cell::RefCell;
pub struct IsoFD { pub struct IsoFD {
pub fd: FDId, pub fd: FDId,
offset: u32,
lba: u32,
size: u32
} }
impl IsoFD { impl IsoFD {
pub async fn new(entry: &IsoDir) -> FDt { pub fn new() -> FDt {
let fd = Arc::new(RefCell::new(IsoFD { Arc::new(RefCell::new(IsoFD {
fd: FDId::new(), fd: FDId::new(),
offset: 0, }))
lba: entry.data_blk.le,
size: entry.file_size.le,
}));
FD_TABLE.lock().await.register_fd(fd.clone());
fd
} }
} }
@ -34,45 +23,12 @@ impl FileDescriptor for IsoFD {
self.fd self.fd
} }
async fn write(&mut self, _buf: &[u8], _count: usize) -> isize { async fn write(&mut self, buf: &[u8], count: usize) -> isize {
-1 0
} }
#[allow(unaligned_references)] async fn read(&mut self, buf: &[u8], count: usize) -> isize {
async fn read(&mut self, buf: &mut [u8], count: usize) -> isize { println!("Read from fd");
let mut block_offset = self.offset / ISO_BLOCK_SIZE; 0
let mut content = read_block(self.lba + block_offset).await;
let mut read: isize = 0;
for _ in 0..count {
if self.offset >= self.size {
break;
}
buf[read as usize] = content[(self.offset % ISO_BLOCK_SIZE) as usize];
read += 1;
self.offset += 1;
if self.offset % ISO_BLOCK_SIZE == 0 {
block_offset += 1;
content = read_block(self.lba + block_offset).await;
}
}
read
}
async fn close(&mut self) {
FD_TABLE.lock().await.unregister_fd(self);
}
async fn lseek(&mut self, offset: i32, whence: u32) -> i32 {
use crate::syscalls::io::*;
match whence {
w if w == SEEK_SET => self.offset = offset as u32,
w if w == SEEK_CUR => self.offset = (self.offset as i32 + offset) as u32,
w if w == SEEK_END => self.offset = (self.size as i32 + offset) as u32,
_ => {}
};
self.offset as i32
} }
} }

@ -1,21 +1,22 @@
pub const ISO_BLOCK_SIZE: u32 = 2048; const ISO_BLOCK_SIZE: usize = 2048;
// Twin values structs // Twin values structs
#[repr(C, packed)] #[repr(C, packed)]
#[derive(Copy, Clone)] #[derive(Copy, Clone)]
pub struct MultiEndian32 { pub struct MultiEndian32 {
pub le: u32, // Little endian value le: u32, // Little endian value
pub be: u32, // Big endian value be: u32, // Big endian value
} }
#[repr(C, packed)] #[repr(C, packed)]
#[derive(Copy, Clone)] #[derive(Copy, Clone)]
pub struct MultiEndian16 { pub struct MultiEndian16 {
pub le: u16, // Little endian value le: u16, // Little endian value
pub be: u16, // Big endian value be: u16, // Big endian value
} }
// Path table structure // Path table structure
#[repr(C, packed)] #[repr(C, packed)]
@ -25,77 +26,63 @@ struct IsoPathTable {
ext_size: u8, // Extended attribute record length ext_size: u8, // Extended attribute record length
data_blk: u8, // File data block index data_blk: u8, // File data block index
parent_dir: u16, // Number of the parent dir parent_dir: u16, // Number of the parent dir
idf: [u8; 0], // Directory name, of size Self::idf_len idf: [u8; 0] // Directory name, of size Self::idf_len
} }
#[allow(dead_code)]
impl IsoPathTable { impl IsoPathTable {
#[allow(unaligned_references)] #[allow(unaligned_references)]
pub fn get_idf(&self) -> &[u8] { pub fn get_idf(&self) -> &[u8] {
unsafe { core::slice::from_raw_parts(self.idf.as_ptr(), self.idf_len as usize) } unsafe {
core::slice::from_raw_parts(self.idf.as_ptr(), self.idf_len as usize)
}
} }
} }
// Directory structure // Directory structure
#[allow(dead_code)]
const ISO_MAX_DIR_DEPTH: usize = 8;
const ISO_DATE_LEN: usize = 7; const ISO_DATE_LEN: usize = 7;
#[repr(u8)] #[repr(u8)]
#[derive(Copy, Clone, PartialEq, Eq)] #[derive(Copy, Clone)]
#[allow(dead_code)] enum IsoFileType {
pub enum IsoFileType {
HIDDEN = 0x1, // Hidden file HIDDEN = 0x1, // Hidden file
ISDIR = 0x2, // Directory ISDIR = 0x2, // Directory
ASSOCIAT = 0x4, // Associated ASSOCIAT = 0x4, // Associated
USEEXT = 0x8, // USEEXT = 0x8, //
USEPERM = 0x10, // USEPERM = 0x10, //
MULTIDIR = 0x80, // MULTIDIR = 0x80 //
} }
#[repr(C, packed)] #[repr(C, packed)]
#[derive(Copy, Clone)] #[derive(Copy, Clone)]
pub struct IsoDir { pub struct IsoDir {
pub dir_size: u8, // Length of directory record dir_size: u8, // Length of directory record
pub ext_size: u8, // Length of extended attribute record ext_size: u8, // Length of extended attribute record
pub data_blk: MultiEndian32, // File data block index data_blk: MultiEndian32, // File data block index
pub file_size: MultiEndian32, // File size file_size: MultiEndian32, // File size
pub date: [u8; ISO_DATE_LEN], date: [u8; ISO_DATE_LEN],
pub file_type: IsoFileType, file_type: IsoFileType,
pub unit_size: u8, unit_size: u8,
pub gap_size: u8, gap_size: u8,
pub vol_seq: MultiEndian16, vol_seq: MultiEndian16,
pub idf_len: u8, // File name length idf_len: u8, // File name length
pub idf: [u8; 0], // File name idf: [u8; 0], // File name
} }
impl IsoDir { impl IsoDir {
#[allow(unaligned_references)] #[allow(unaligned_references)]
pub fn get_idf(&self) -> &[u8] { pub fn get_idf(&self) -> &[u8] {
let mut len: usize = self.idf_len as usize;
unsafe { unsafe {
let mut idf = core::slice::from_raw_parts(self.idf.as_ptr(), len as usize); core::slice::from_raw_parts(self.idf.as_ptr(), self.idf_len as usize)
if len > 2 && idf[len - 2] == b';' && idf[len - 1] == b'1' {
len -= 2;
idf = core::slice::from_raw_parts(self.idf.as_ptr(), len as usize);
} }
idf
}
}
pub fn next_entry(&self) -> &IsoDir {
crate::utils::ref_raw_offset(self, self.dir_size as isize)
}
pub fn matches(&self, path: &str) -> bool {
self.get_idf() == path.as_bytes()
} }
} }
// Primary volume descriptor structure // Primary volume descriptor structure
pub const ISO_PRIM_VOLDESC_BLOCK: u32 = 16; pub const ISO_PRIM_VOLDESC_BLOCK: u32 = 16;

@ -1,83 +1,37 @@
mod fd;
pub mod iso9660; pub mod iso9660;
mod fd;
use crate::drivers::atapi::read_block; use crate::println;
use crate::fd::{FDt}; use crate::drivers::atapi::{DRIVE};
use crate::fd::{FD_TABLE, FDt};
use crate::utils::unserialize; use crate::utils::unserialize;
use super::FileSystem; use iso9660::{IsoPrimVolDesc, IsoDir};
use fd::IsoFD; use fd::IsoFD;
use iso9660::{IsoDir, IsoPrimVolDesc};
use alloc::{boxed::Box, string::String, vec::Vec}; pub async fn get_prim_vol_desc() -> IsoPrimVolDesc {
use async_trait::async_trait; let desc_block = DRIVE
.lock()
.await
.as_mut()
.unwrap()
.read_block(iso9660::ISO_PRIM_VOLDESC_BLOCK)
.await;
*unserialize::<IsoPrimVolDesc>(desc_block.as_ptr())
}
pub struct IsoFS {} pub async fn open(path: &str, flags: u32) -> Option<FDt> {
#[async_trait(?Send)]
#[allow(unaligned_references)]
impl FileSystem for IsoFS {
async fn open(&mut self, path: &str, flags: u32) -> Option<FDt> {
// ISO is a read only file system
if flags != crate::syscalls::io::O_RDONLY { if flags != crate::syscalls::io::O_RDONLY {
return None; return None;
} }
let voldesc = get_prim_vol_desc().await; let voldesc = get_prim_vol_desc().await;
// Invalid ISO
if voldesc.std_identifier != "CD001".as_bytes() { if voldesc.std_identifier != "CD001".as_bytes() {
return None; return None;
} }
let root: &IsoDir = &voldesc.root_dir; let fd = IsoFD::new();
let mut curr_entry_block: [u8; iso9660::ISO_BLOCK_SIZE as usize] = read_block(root.data_blk.le).await; FD_TABLE.lock().await.register_fd(fd.clone()).await;
Some(fd)
let mut curr_entry: &IsoDir = unserialize(curr_entry_block.as_ptr());
let path_s: String = String::from(path);
let path_split: Vec<&str> = path_s.split("/").collect();
let path_it = path_s
.split("/")
.filter(|p| p != &"");
for path_component in path_it {
let mut found = false;
while curr_entry.idf_len != 0 {
// Found entry
if curr_entry.matches(path_component) {
found = true;
// Not the last component, go 1 directory deeper
if path_component != path_split[path_split.len() - 1] {
// Not a directory
if curr_entry.file_type != iso9660::IsoFileType::ISDIR {
return None;
}
// Deeper entries
curr_entry_block = read_block(curr_entry.data_blk.le).await;
curr_entry = unserialize(curr_entry_block.as_ptr());
}
break;
}
// Next entry
curr_entry = curr_entry.next_entry();
}
// File not found
if !found {
return None;
}
}
Some(IsoFD::new(curr_entry).await)
}
}
pub async fn get_prim_vol_desc() -> IsoPrimVolDesc {
let desc_block = read_block(iso9660::ISO_PRIM_VOLDESC_BLOCK).await;
*unserialize::<IsoPrimVolDesc>(desc_block.as_ptr())
} }

@ -1,39 +1 @@
pub mod iso; pub mod iso;
use crate::fd::FDt;
use crate::utils::mutex::AsyncMutex;
use alloc::{boxed::Box, sync::Arc};
use async_trait::async_trait;
use core::cell::RefCell;
use lazy_static::lazy_static;
pub type FSt = Arc<RefCell<dyn FileSystem>>;
lazy_static! {
pub static ref VIRTUAL_FS: AsyncMutex<VirtualFS> = AsyncMutex::new(VirtualFS::new());
}
#[async_trait(?Send)]
pub trait FileSystem {
async fn open(&mut self, path: &str, flags: u32) -> Option<FDt>;
}
pub struct VirtualFS {
fs: FSt,
}
impl VirtualFS {
fn new() -> Self {
VirtualFS {
fs: Arc::new(RefCell::new(iso::IsoFS {})),
}
}
}
#[async_trait(?Send)]
impl FileSystem for VirtualFS {
async fn open(&mut self, path: &str, flags: u32) -> Option<FDt> {
self.fs.borrow_mut().open(path, flags).await
}
}

@ -4,8 +4,12 @@ use crate::memory::gdt;
use crate::println; use crate::println;
use lazy_static::lazy_static; use lazy_static::lazy_static;
use pic::{ use pic::{
disk1_interrupt_handler, disk2_interrupt_handler, init_pic, keyboard_interrupt_handler, init_pic,
timer_interrupt_handler, InterruptIndex, keyboard_interrupt_handler,
timer_interrupt_handler,
disk1_interrupt_handler,
disk2_interrupt_handler,
InterruptIndex
}; };
use x86_64::structures::idt::PageFaultErrorCode; use x86_64::structures::idt::PageFaultErrorCode;
use x86_64::structures::idt::{InterruptDescriptorTable, InterruptStackFrame}; use x86_64::structures::idt::{InterruptDescriptorTable, InterruptStackFrame};

@ -1,12 +1,12 @@
use crate::println; use crate::println;
pub use disk::{disk1_interrupt_handler, disk2_interrupt_handler};
pub use keyboard::keyboard_interrupt_handler; pub use keyboard::keyboard_interrupt_handler;
use pic8259::ChainedPics; use pic8259::ChainedPics;
pub use pit::timer_interrupt_handler; pub use pit::timer_interrupt_handler;
pub use disk::{disk1_interrupt_handler, disk2_interrupt_handler};
pub mod disk;
pub mod keyboard; pub mod keyboard;
pub mod pit; pub mod pit;
pub mod disk;
pub const PIC_1_OFFSET: u8 = 32; pub const PIC_1_OFFSET: u8 = 32;
pub const PIC_2_OFFSET: u8 = PIC_1_OFFSET + 8; pub const PIC_2_OFFSET: u8 = PIC_1_OFFSET + 8;

@ -4,19 +4,18 @@
#![feature(alloc_error_handler)] #![feature(alloc_error_handler)]
mod drivers; mod drivers;
mod fd;
mod fs;
mod interrupts; mod interrupts;
mod memory; mod memory;
mod syscalls;
mod task; mod task;
mod fs;
mod utils; mod utils;
mod fd;
mod syscalls;
//#[macro_use] //#[macro_use]
extern crate alloc; extern crate alloc;
extern crate multiboot2; extern crate multiboot2;
use crate::fs::FileSystem;
use core::panic::PanicInfo; use core::panic::PanicInfo;
use drivers::vga::{self, Color, ColorCode}; use drivers::vga::{self, Color, ColorCode};
use multiboot2::BootInformation; use multiboot2::BootInformation;
@ -64,23 +63,8 @@ pub extern "C" fn julios_main(multiboot_info_addr: usize) -> ! {
executor.run(); executor.run();
} }
async fn get_file() { async fn get_file() {
let fd = fs::VIRTUAL_FS let fd = fs::iso::open("test", syscalls::io::O_RDONLY).await.unwrap();
.lock() fd.borrow_mut().read(&[], 0).await;
.await
.open("///boot/grub//grub.cfg", syscalls::io::O_RDONLY)
.await
.unwrap();
let mut buf: [u8; 100] = [0; 100];
let read = fd.borrow_mut().read(&mut buf, 100).await;
serial_println!("{:?}", read);
serial_println!("{}", alloc::str::from_utf8(&buf).unwrap());
fd.borrow_mut().lseek(10, syscalls::io::SEEK_SET).await;
fd.borrow_mut().read(&mut buf, 100).await;
serial_println!("{}", alloc::str::from_utf8(&buf).unwrap());
fd.borrow_mut().close().await;
} }

@ -2,6 +2,9 @@
pub const O_RDONLY: u32 = 0; pub const O_RDONLY: u32 = 0;
// seek flags // seek flags
#[allow(dead_code)]
pub const SEEK_SET: u32 = 0; pub const SEEK_SET: u32 = 0;
#[allow(dead_code)]
pub const SEEK_CUR: u32 = 1; pub const SEEK_CUR: u32 = 1;
#[allow(dead_code)]
pub const SEEK_END: u32 = 2; pub const SEEK_END: u32 = 2;

@ -1,19 +1,5 @@
pub mod mutex;
pub mod serialize; pub mod serialize;
pub mod mutex;
pub use mutex::AsyncMutex;
pub use serialize::unserialize; pub use serialize::unserialize;
pub use mutex::AsyncMutex;
pub fn ref_offset<T>(r: &T, off: isize) -> &T {
let ref_ptr: *const T = r;
unsafe {
return &*ref_ptr.offset(off);
}
}
pub fn ref_raw_offset<T>(r: &T, off: isize) -> &T {
let ref_ptr: *const T = r;
unsafe {
return &*ref_ptr.cast::<u8>().offset(off).cast::<T>();
}
}

@ -1,10 +1,10 @@
use alloc::sync::Arc;
use core::cell::UnsafeCell;
use core::future::Future; use core::future::Future;
use core::ops::{Deref, DerefMut, Drop};
use core::pin::Pin; use core::pin::Pin;
use core::cell::UnsafeCell;
use core::ops::{Deref, DerefMut, Drop};
use core::sync::atomic::{AtomicBool, Ordering}; use core::sync::atomic::{AtomicBool, Ordering};
use core::task::{Context, Poll}; use core::task::{Context, Poll};
use alloc::sync::Arc;
use futures_util::task::AtomicWaker; use futures_util::task::AtomicWaker;
@ -14,7 +14,7 @@ struct Lock {
waker: Arc<AtomicWaker>, waker: Arc<AtomicWaker>,
} }
pub struct AsyncMutex<T: ?Sized> { pub struct AsyncMutex<T> {
lock: Lock, lock: Lock,
inner: UnsafeCell<T>, inner: UnsafeCell<T>,
} }
@ -23,7 +23,7 @@ pub struct AsyncMutexGuard<'a, T>
where where
T: 'a, T: 'a,
{ {
mutex: &'a AsyncMutex<T>, mutex: &'a AsyncMutex<T>
} }
impl Lock { impl Lock {
@ -58,7 +58,7 @@ impl Future for Lock {
false => { false => {
self.waker.take(); self.waker.take();
Poll::Ready(()) Poll::Ready(())
} },
true => Poll::Pending, true => Poll::Pending,
} }
} }
@ -98,12 +98,16 @@ impl<T> Drop for AsyncMutexGuard<'_, T> {
impl<T> Deref for AsyncMutexGuard<'_, T> { impl<T> Deref for AsyncMutexGuard<'_, T> {
type Target = T; type Target = T;
fn deref(&self) -> &Self::Target { fn deref(&self) -> &Self::Target {
unsafe { &*self.mutex.inner.get() } unsafe {
&*self.mutex.inner.get()
}
} }
} }
impl<T> DerefMut for AsyncMutexGuard<'_, T> { impl<T> DerefMut for AsyncMutexGuard<'_, T> {
fn deref_mut(&mut self) -> &mut Self::Target { fn deref_mut(&mut self) -> &mut Self::Target {
unsafe { &mut *self.mutex.inner.get() } unsafe {
&mut *self.mutex.inner.get()
}
} }
} }

@ -1,4 +1,6 @@
pub fn unserialize<T>(ptr: *const u8) -> &'static T { pub fn unserialize<T>(ptr: *const u8) -> &'static T {
let path_table_ptr: *const T = ptr as *const T; let path_table_ptr: *const T = ptr as *const T;
unsafe { &*path_table_ptr } unsafe {
&*path_table_ptr
}
} }