Initial commit
This commit is contained in:
commit
e0b403ef7a
GPG Key ID:
7B5F6AFBEC7EE78E
5
.cargo/config.toml
Normal file
5
.cargo/config.toml
Normal file
@ -0,0 +1,5 @@
|
||||
[build]
|
||||
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|
||||
|
||||
[install]
|
||||
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|
||||
1
.gitignore
vendored
Normal file
1
.gitignore
vendored
Normal file
@ -0,0 +1 @@
|
||||
/target
|
||||
392
Cargo.lock
generated
Normal file
392
Cargo.lock
generated
Normal file
@ -0,0 +1,392 @@
|
||||
# This file is automatically @generated by Cargo.
|
||||
# It is not intended for manual editing.
|
||||
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12
Cargo.toml
Normal file
12
Cargo.toml
Normal file
@ -0,0 +1,12 @@
|
||||
[package]
|
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|
||||
6
pty_rpc/Cargo.toml
Normal file
6
pty_rpc/Cargo.toml
Normal file
@ -0,0 +1,6 @@
|
||||
[package]
|
||||
name = "pty_rpc"
|
||||
version = "0.1.0"
|
||||
edition = "2021"
|
||||
|
||||
[dependencies]
|
||||
3
pty_rpc/src/main.rs
Normal file
3
pty_rpc/src/main.rs
Normal file
@ -0,0 +1,3 @@
|
||||
fn main() {
|
||||
println!("Hello, world!");
|
||||
}
|
||||
2
rust-toolchain.toml
Normal file
2
rust-toolchain.toml
Normal file
@ -0,0 +1,2 @@
|
||||
[toolchain]
|
||||
channel = "dev-x86_64-unknown-mikros"
|
||||
149
src/main.rs
Normal file
149
src/main.rs
Normal file
@ -0,0 +1,149 @@
|
||||
use std::{
|
||||
borrow::Cow,
|
||||
collections::HashMap,
|
||||
os::mikros::{ipc, syscalls},
|
||||
path::{Path, PathBuf},
|
||||
sync::Arc,
|
||||
};
|
||||
|
||||
use parking_lot::{Mutex, RwLock};
|
||||
use slab::Slab;
|
||||
|
||||
struct Pty {
|
||||
input_buffer: Mutex<Vec<u8>>,
|
||||
output_buffer: Mutex<Vec<u8>>,
|
||||
}
|
||||
|
||||
impl Pty {
|
||||
fn new() -> Self {
|
||||
Pty {
|
||||
input_buffer: Mutex::new(Vec::new()),
|
||||
output_buffer: Mutex::new(Vec::new()),
|
||||
}
|
||||
}
|
||||
|
||||
fn read_master(&self, len: usize) -> Result<Vec<u8>, ()> {
|
||||
let mut output_buffer = self.output_buffer.lock();
|
||||
let buf_len = output_buffer.len();
|
||||
let rem_buf = output_buffer.split_off(usize::min(buf_len, len));
|
||||
let buf = std::mem::replace(&mut *output_buffer, rem_buf);
|
||||
Ok(buf)
|
||||
}
|
||||
|
||||
fn write_master(&self, data: &[u8]) -> Result<(), ()> {
|
||||
let mut input_buffer = self.input_buffer.lock();
|
||||
let mut output_buffer = self.output_buffer.lock();
|
||||
for &byte in data {
|
||||
output_buffer.push(byte);
|
||||
if byte == 8 {
|
||||
if input_buffer.last() != Some(&b'\n') {
|
||||
input_buffer.pop();
|
||||
}
|
||||
} else {
|
||||
input_buffer.push(byte);
|
||||
}
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn read_slave(&self, len: usize) -> Result<Vec<u8>, ()> {
|
||||
while !self.input_buffer.lock().contains(&b'\n') {
|
||||
ipc::process_messages();
|
||||
}
|
||||
let mut input_buffer = self.input_buffer.lock();
|
||||
let Some(line_end) = input_buffer.iter().position(|&x| x == b'\n') else {
|
||||
return Ok(vec![]);
|
||||
};
|
||||
let rem_buf = input_buffer.split_off(usize::min(len, line_end + 1));
|
||||
let buf = std::mem::replace(&mut *input_buffer, rem_buf);
|
||||
Ok(buf)
|
||||
}
|
||||
|
||||
fn write_slave(&self, data: &[u8]) -> Result<(), ()> {
|
||||
self.output_buffer.lock().extend(data);
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Clone)]
|
||||
struct Serv {
|
||||
ptys: Arc<RwLock<Slab<Pty>>>,
|
||||
slave_map: Arc<RwLock<HashMap<PathBuf, usize>>>,
|
||||
devfs_client: devfs_rpc::Client,
|
||||
}
|
||||
|
||||
impl dev_driver_rpc::Server for Serv {
|
||||
fn open(&self, path: &Path) -> Result<u64, ()> {
|
||||
if path == Path::new("ptmx") {
|
||||
let pty = Pty::new();
|
||||
let idx = self.ptys.write().insert(pty);
|
||||
if idx > usize::MAX / 2 {
|
||||
panic!("PTY index too big to map to a slave FD")
|
||||
}
|
||||
let slave_name = format!("pts{}", idx);
|
||||
let mut slave_path = PathBuf::new();
|
||||
self.devfs_client.register_dev(&slave_name).unwrap();
|
||||
slave_path.push(Path::new(&slave_name));
|
||||
self.slave_map.write().insert(slave_path, idx);
|
||||
Ok(idx as u64)
|
||||
} else if let Some(&idx) = self.slave_map.read().get(path) {
|
||||
Ok((idx + usize::MAX / 2) as u64)
|
||||
} else {
|
||||
Err(())
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl file_rpc::Server for Serv {
|
||||
fn read(&self, fd: u64, _pos: u64, len: usize) -> Result<Cow<'_, [u8]>, ()> {
|
||||
if fd as usize >= usize::MAX / 2 {
|
||||
let ptys = self.ptys.read();
|
||||
let pty = &ptys[fd as usize - usize::MAX / 2];
|
||||
pty.read_slave(len).map(|x| x.into())
|
||||
} else {
|
||||
let ptys = self.ptys.read();
|
||||
let pty = &ptys[fd as usize];
|
||||
pty.read_master(len).map(|x| x.into())
|
||||
}
|
||||
}
|
||||
|
||||
fn write(&self, fd: u64, _pos: u64, data: &[u8]) -> Result<(), ()> {
|
||||
if fd as usize >= usize::MAX / 2 {
|
||||
let ptys = self.ptys.read();
|
||||
let pty = &ptys[fd as usize - usize::MAX / 2];
|
||||
pty.write_slave(data)
|
||||
} else {
|
||||
let ptys = self.ptys.read();
|
||||
let pty = &ptys[fd as usize];
|
||||
pty.write_master(data)
|
||||
}
|
||||
}
|
||||
|
||||
fn close(&self, _fd: u64) {}
|
||||
|
||||
fn size(&self, _fd: u64) -> Option<u64> {
|
||||
None
|
||||
}
|
||||
}
|
||||
|
||||
fn main() {
|
||||
let devfs_pid;
|
||||
loop {
|
||||
if let Some(pid) = syscalls::try_get_registered(1) {
|
||||
devfs_pid = pid;
|
||||
break;
|
||||
}
|
||||
}
|
||||
let devfs_client = devfs_rpc::Client::new(devfs_pid);
|
||||
let serv = Serv {
|
||||
ptys: Arc::new(RwLock::new(Slab::new())),
|
||||
slave_map: Arc::new(RwLock::new(HashMap::new())),
|
||||
devfs_client,
|
||||
};
|
||||
dev_driver_rpc::register_server(Box::new(serv.clone()));
|
||||
file_rpc::register_server(Box::new(serv.clone()));
|
||||
devfs_client.register_dev("ptmx").unwrap();
|
||||
loop {
|
||||
ipc::process_messages()
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user