Initial commit
This commit is contained in:
commit
2b51b024f7
GPG Key ID:
7B5F6AFBEC7EE78E
5
.cargo/config.toml
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5
.cargo/config.toml
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@ -0,0 +1,5 @@
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[build]
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target = "x86_64-unknown-mikros"
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[install]
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root = "../os_build/sysroot"
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1
.gitignore
vendored
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1
.gitignore
vendored
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/target
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391
Cargo.lock
generated
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391
Cargo.lock
generated
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_i686_gnu"
|
||||||
|
version = "0.52.6"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_i686_gnullvm"
|
||||||
|
version = "0.52.6"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_i686_msvc"
|
||||||
|
version = "0.52.6"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_x86_64_gnu"
|
||||||
|
version = "0.52.6"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_x86_64_gnullvm"
|
||||||
|
version = "0.52.6"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_x86_64_msvc"
|
||||||
|
version = "0.52.6"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
|
||||||
21
Cargo.toml
Normal file
21
Cargo.toml
Normal file
@ -0,0 +1,21 @@
|
|||||||
|
[package]
|
||||||
|
name = "tmpfs"
|
||||||
|
version = "0.1.0"
|
||||||
|
edition = "2021"
|
||||||
|
|
||||||
|
[dependencies]
|
||||||
|
dir_rpc = { version = "0.1.0", path = "../dir_rpc" }
|
||||||
|
file_rpc = { version = "0.1.0", path = "../file_rpc" }
|
||||||
|
fs_rpc = { version = "0.1.0", path = "../fs_rpc" }
|
||||||
|
parking_lot = "0.12.3"
|
||||||
|
syslog_rpc = { version = "0.1.0", path = "../syslog/syslog_rpc" }
|
||||||
|
vfs_rpc = { version = "0.1.0", path = "../vfs/vfs_rpc" }
|
||||||
|
|
||||||
|
[profile.release]
|
||||||
|
strip = true
|
||||||
|
lto = true
|
||||||
|
opt-level = "s"
|
||||||
|
|
||||||
|
[patch.crates-io]
|
||||||
|
serde = { path = "../serde/serde" }
|
||||||
|
serde_derive = { path = "../serde/serde_derive" }
|
||||||
2
rust-toolchain.toml
Normal file
2
rust-toolchain.toml
Normal file
@ -0,0 +1,2 @@
|
|||||||
|
[toolchain]
|
||||||
|
channel = "dev-x86_64-unknown-mikros"
|
||||||
144
src/main.rs
Normal file
144
src/main.rs
Normal file
@ -0,0 +1,144 @@
|
|||||||
|
mod tempfs;
|
||||||
|
|
||||||
|
use std::{
|
||||||
|
borrow::Cow,
|
||||||
|
os::mikros::{ipc, syscalls, Errno, FileOpenMode},
|
||||||
|
sync::Arc,
|
||||||
|
};
|
||||||
|
|
||||||
|
use parking_lot::Mutex;
|
||||||
|
use tempfs::TempFs;
|
||||||
|
|
||||||
|
#[derive(Clone)]
|
||||||
|
struct Serv {
|
||||||
|
mounts: Arc<Mutex<Vec<TempFs>>>,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl fs_rpc::Server for Serv {
|
||||||
|
fn mount(&self, _dev: &std::path::Path) -> Result<u64, Errno> {
|
||||||
|
let mut mounts = self.mounts.lock();
|
||||||
|
if mounts.len() == u32::MAX as usize {
|
||||||
|
return Err(Errno::ENOMEM);
|
||||||
|
}
|
||||||
|
mounts.push(TempFs::new());
|
||||||
|
Ok((mounts.len() - 1) as u64)
|
||||||
|
}
|
||||||
|
|
||||||
|
fn open(
|
||||||
|
&self,
|
||||||
|
path: &std::path::Path,
|
||||||
|
mode: FileOpenMode,
|
||||||
|
mount_id: u64,
|
||||||
|
) -> Result<(Option<u64>, u64), Errno> {
|
||||||
|
let mut mounts = self.mounts.lock();
|
||||||
|
let mount = mounts.get_mut(mount_id as usize).ok_or(Errno::EBADF)?;
|
||||||
|
let fd = mount.open(path, mode)?;
|
||||||
|
Ok((None, (fd as u64) | (mount_id << 32)))
|
||||||
|
}
|
||||||
|
|
||||||
|
fn open_dir(&self, path: &std::path::Path, mount_id: u64) -> Result<(Option<u64>, u64), Errno> {
|
||||||
|
let mut mounts = self.mounts.lock();
|
||||||
|
let mount = mounts.get_mut(mount_id as usize).ok_or(Errno::EBADF)?;
|
||||||
|
let fd = mount.open_dir(path)?;
|
||||||
|
Ok((None, (fd as u64) | (mount_id << 32)))
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl file_rpc::Server for Serv {
|
||||||
|
fn read(&self, fd: u64, len: usize) -> Result<Cow<'_, [u8]>, Errno> {
|
||||||
|
let mount_id = fd >> 32;
|
||||||
|
let fd = fd as u32;
|
||||||
|
let mut mounts = self.mounts.lock();
|
||||||
|
let mount = mounts.get_mut(mount_id as usize).ok_or(Errno::EBADF)?;
|
||||||
|
mount.read(fd, len).map(|buf| buf.into())
|
||||||
|
}
|
||||||
|
|
||||||
|
fn write(&self, fd: u64, data: &[u8]) -> Result<(), Errno> {
|
||||||
|
let mount_id = fd >> 32;
|
||||||
|
let fd = fd as u32;
|
||||||
|
let mut mounts = self.mounts.lock();
|
||||||
|
let mount = mounts.get_mut(mount_id as usize).ok_or(Errno::EBADF)?;
|
||||||
|
mount.write(fd, data)
|
||||||
|
}
|
||||||
|
|
||||||
|
fn close(&self, fd: u64) -> Result<(), Errno> {
|
||||||
|
let mount_id = fd >> 32;
|
||||||
|
let fd = fd as u32;
|
||||||
|
let mut mounts = self.mounts.lock();
|
||||||
|
let mount = mounts.get_mut(mount_id as usize).ok_or(Errno::EBADF)?;
|
||||||
|
mount.close(fd)
|
||||||
|
}
|
||||||
|
|
||||||
|
fn size(&self, fd: u64) -> Result<u64, Errno> {
|
||||||
|
let mount_id = fd >> 32;
|
||||||
|
let fd = fd as u32;
|
||||||
|
let mounts = self.mounts.lock();
|
||||||
|
let mount = mounts.get(mount_id as usize).ok_or(Errno::EBADF)?;
|
||||||
|
mount.size(fd)
|
||||||
|
}
|
||||||
|
|
||||||
|
fn dup(&self, fd: u64) -> Result<u64, Errno> {
|
||||||
|
let mount_id = fd >> 32;
|
||||||
|
let fd = fd as u32;
|
||||||
|
let mut mounts = self.mounts.lock();
|
||||||
|
let mount = mounts.get_mut(mount_id as usize).ok_or(Errno::EBADF)?;
|
||||||
|
let new_fd = mount.dup(fd)?;
|
||||||
|
Ok((new_fd as u64) | (mount_id << 32))
|
||||||
|
}
|
||||||
|
|
||||||
|
fn seek(&self, fd: u64, pos: file_rpc::SeekFrom) -> Result<u64, Errno> {
|
||||||
|
let mount_id = fd >> 32;
|
||||||
|
let fd = fd as u32;
|
||||||
|
let mut mounts = self.mounts.lock();
|
||||||
|
let mount = mounts.get_mut(mount_id as usize).ok_or(Errno::EBADF)?;
|
||||||
|
mount.seek(fd, pos)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl dir_rpc::Server for Serv {
|
||||||
|
fn next_entry(&self, fd: u64) -> Result<Option<String>, Errno> {
|
||||||
|
let mount_id = fd >> 32;
|
||||||
|
let fd = fd as u32;
|
||||||
|
let mut mounts = self.mounts.lock();
|
||||||
|
let mount = mounts.get_mut(mount_id as usize).ok_or(Errno::EBADF)?;
|
||||||
|
mount.dir_next(fd)
|
||||||
|
}
|
||||||
|
|
||||||
|
fn close(&self, fd: u64) -> Result<(), Errno> {
|
||||||
|
let mount_id = fd >> 32;
|
||||||
|
let fd = fd as u32;
|
||||||
|
let mut mounts = self.mounts.lock();
|
||||||
|
let mount = mounts.get_mut(mount_id as usize).ok_or(Errno::EBADF)?;
|
||||||
|
mount.close(fd)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn main() {
|
||||||
|
let serv = Serv {
|
||||||
|
mounts: Arc::new(Mutex::new(Vec::new())),
|
||||||
|
};
|
||||||
|
fs_rpc::register_server(Box::new(serv.clone()));
|
||||||
|
dir_rpc::register_server(Box::new(serv.clone()));
|
||||||
|
file_rpc::register_server(Box::new(serv));
|
||||||
|
let vfs_pid;
|
||||||
|
loop {
|
||||||
|
if let Some(pid) = syscalls::try_get_registered(0) {
|
||||||
|
vfs_pid = pid;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
vfs_rpc::Client::new(vfs_pid).register_fs("tmpfs").unwrap();
|
||||||
|
let syslog_pid;
|
||||||
|
loop {
|
||||||
|
if let Some(pid) = syscalls::try_get_registered(2) {
|
||||||
|
syslog_pid = pid;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
syslog_rpc::Client::new(syslog_pid)
|
||||||
|
.send_text_binary_message("tmpfs".to_string(), "Tmpfs initialized".to_string(), 0, [])
|
||||||
|
.unwrap();
|
||||||
|
loop {
|
||||||
|
ipc::process_messages()
|
||||||
|
}
|
||||||
|
}
|
||||||
263
src/tempfs.rs
Normal file
263
src/tempfs.rs
Normal file
@ -0,0 +1,263 @@
|
|||||||
|
use std::{
|
||||||
|
ffi::OsString,
|
||||||
|
os::mikros::{Errno, FileCreationMode, FileOpenMode},
|
||||||
|
path::Path,
|
||||||
|
};
|
||||||
|
|
||||||
|
struct DirEntry {
|
||||||
|
name: OsString,
|
||||||
|
inode: usize,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl DirEntry {
|
||||||
|
fn new<T: Into<OsString>>(name: T, inode: usize) -> Self {
|
||||||
|
Self {
|
||||||
|
name: name.into(),
|
||||||
|
inode,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
enum Inode {
|
||||||
|
File(Vec<u8>),
|
||||||
|
Directory(Vec<DirEntry>),
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Inode {
|
||||||
|
fn as_directory(&self) -> Option<&Vec<DirEntry>> {
|
||||||
|
if let Self::Directory(v) = self {
|
||||||
|
Some(v)
|
||||||
|
} else {
|
||||||
|
None
|
||||||
|
}
|
||||||
|
}
|
||||||
|
fn as_directory_mut(&mut self) -> Option<&mut Vec<DirEntry>> {
|
||||||
|
if let Self::Directory(v) = self {
|
||||||
|
Some(v)
|
||||||
|
} else {
|
||||||
|
None
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[allow(unused)]
|
||||||
|
fn as_file(&self) -> Option<&Vec<u8>> {
|
||||||
|
if let Self::File(v) = self {
|
||||||
|
Some(v)
|
||||||
|
} else {
|
||||||
|
None
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn as_file_mut(&mut self) -> Option<&mut Vec<u8>> {
|
||||||
|
if let Self::File(v) = self {
|
||||||
|
Some(v)
|
||||||
|
} else {
|
||||||
|
None
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/// Returns `true` if the inode is [`File`].
|
||||||
|
///
|
||||||
|
/// [`File`]: Inode::File
|
||||||
|
#[must_use]
|
||||||
|
fn is_file(&self) -> bool {
|
||||||
|
matches!(self, Self::File(..))
|
||||||
|
}
|
||||||
|
|
||||||
|
/// Returns `true` if the inode is [`Directory`].
|
||||||
|
///
|
||||||
|
/// [`Directory`]: Inode::Directory
|
||||||
|
#[must_use]
|
||||||
|
fn is_directory(&self) -> bool {
|
||||||
|
matches!(self, Self::Directory(..))
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
struct OpenFile {
|
||||||
|
pos: usize,
|
||||||
|
inode: usize,
|
||||||
|
mode: FileOpenMode,
|
||||||
|
}
|
||||||
|
|
||||||
|
pub struct TempFs {
|
||||||
|
inodes: Vec<Inode>,
|
||||||
|
open_files: Vec<OpenFile>,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl TempFs {
|
||||||
|
pub fn new() -> Self {
|
||||||
|
Self {
|
||||||
|
inodes: vec![Inode::Directory(vec![
|
||||||
|
DirEntry::new(".", 0),
|
||||||
|
DirEntry::new("..", 0),
|
||||||
|
])],
|
||||||
|
open_files: Vec::new(),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn path_inode<P: AsRef<Path>>(&self, path: P) -> Result<usize, Errno> {
|
||||||
|
let path = path.as_ref();
|
||||||
|
if let Some(parent) = path.parent() {
|
||||||
|
let file_name = path.file_name().ok_or(Errno::EINVAL)?;
|
||||||
|
let dir_inode = self.path_inode(parent)?;
|
||||||
|
let dir_entries = self.inodes[dir_inode].as_directory().unwrap();
|
||||||
|
Ok(dir_entries
|
||||||
|
.iter()
|
||||||
|
.find(|entry| entry.name == file_name)
|
||||||
|
.ok_or(Errno::ENOENT)?
|
||||||
|
.inode)
|
||||||
|
} else {
|
||||||
|
Ok(0)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn open(&mut self, path: &Path, mode: FileOpenMode) -> Result<u32, Errno> {
|
||||||
|
if self.open_files.len() == u32::MAX as usize {
|
||||||
|
return Err(Errno::ENFILE);
|
||||||
|
}
|
||||||
|
let inode = match self.path_inode(path) {
|
||||||
|
Ok(x) => x,
|
||||||
|
Err(Errno::ENOENT) => {
|
||||||
|
if !mode
|
||||||
|
.get_writing_details()
|
||||||
|
.map_or(false, |(_, y)| y != FileCreationMode::NoCreate)
|
||||||
|
{
|
||||||
|
return Err(Errno::ENOENT);
|
||||||
|
}
|
||||||
|
let parent_dir_inode = self.path_inode(path.parent().unwrap())?;
|
||||||
|
self.inodes.push(Inode::File(vec![]));
|
||||||
|
let new_file_inode = self.inodes.len() - 1;
|
||||||
|
let parent_dir = self.inodes[parent_dir_inode].as_directory_mut().unwrap();
|
||||||
|
let file_name = path.file_name().ok_or(Errno::EINVAL)?;
|
||||||
|
parent_dir.push(DirEntry { name: file_name.to_owned(), inode: new_file_inode });
|
||||||
|
new_file_inode
|
||||||
|
}
|
||||||
|
Err(e) => return Err(e),
|
||||||
|
};
|
||||||
|
if !self.inodes[inode].is_file() {
|
||||||
|
return Err(Errno::EISDIR);
|
||||||
|
}
|
||||||
|
if let Some((wr_mode, _)) = mode.get_writing_details() {
|
||||||
|
if wr_mode.truncate {
|
||||||
|
self.inodes[inode].as_file_mut().unwrap().clear();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
let file = OpenFile {
|
||||||
|
pos: 0,
|
||||||
|
inode,
|
||||||
|
mode,
|
||||||
|
};
|
||||||
|
self.open_files.push(file);
|
||||||
|
Ok((self.open_files.len() - 1) as u32)
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn open_dir(&mut self, path: &Path) -> Result<u32, Errno> {
|
||||||
|
if self.open_files.len() == u32::MAX as usize {
|
||||||
|
return Err(Errno::ENFILE);
|
||||||
|
}
|
||||||
|
let inode = self.path_inode(path)?;
|
||||||
|
if !self.inodes[inode].is_directory() {
|
||||||
|
return Err(Errno::ENOTDIR);
|
||||||
|
}
|
||||||
|
let file = OpenFile {
|
||||||
|
pos: 0,
|
||||||
|
inode,
|
||||||
|
mode: FileOpenMode::Read,
|
||||||
|
};
|
||||||
|
self.open_files.push(file);
|
||||||
|
Ok((self.open_files.len() - 1) as u32)
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn read(&mut self, fd: u32, len: usize) -> Result<Vec<u8>, Errno> {
|
||||||
|
let file = self.open_files.get_mut(fd as usize).ok_or(Errno::EBADF)?;
|
||||||
|
let Inode::File(ref data) = self.inodes[file.inode] else {
|
||||||
|
return Err(Errno::EISDIR);
|
||||||
|
};
|
||||||
|
if !file.mode.readable() {
|
||||||
|
return Err(Errno::EACCES);
|
||||||
|
}
|
||||||
|
let read_len = usize::min(data.len() - file.pos, len);
|
||||||
|
let data = data[file.pos..][..read_len].to_vec();
|
||||||
|
file.pos += read_len;
|
||||||
|
Ok(data)
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn write(&mut self, fd: u32, data: &[u8]) -> Result<(), Errno> {
|
||||||
|
let file = self.open_files.get_mut(fd as usize).ok_or(Errno::EBADF)?;
|
||||||
|
let Inode::File(ref mut file_data) = self.inodes[file.inode] else {
|
||||||
|
return Err(Errno::EISDIR);
|
||||||
|
};
|
||||||
|
let Some((wr_mode, _)) = file.mode.get_writing_details() else {
|
||||||
|
return Err(Errno::EACCES);
|
||||||
|
};
|
||||||
|
if wr_mode.append {
|
||||||
|
file.pos = file_data.len();
|
||||||
|
}
|
||||||
|
let write_end = file.pos + data.len() - 1;
|
||||||
|
if write_end >= file_data.len() {
|
||||||
|
file_data.resize(write_end + 1, 0);
|
||||||
|
}
|
||||||
|
file_data[file.pos..][..data.len()].copy_from_slice(data);
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn close(&mut self, _fd: u32) -> Result<(), Errno> {
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn size(&self, fd: u32) -> Result<u64, Errno> {
|
||||||
|
let file = self.open_files.get(fd as usize).ok_or(Errno::EBADF)?;
|
||||||
|
let Inode::File(ref data) = self.inodes[file.inode] else {
|
||||||
|
return Err(Errno::EISDIR);
|
||||||
|
};
|
||||||
|
Ok(data.len() as u64)
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn dup(&mut self, fd: u32) -> Result<u32, Errno> {
|
||||||
|
Ok(fd)
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn seek(&mut self, fd: u32, pos: file_rpc::SeekFrom) -> Result<u64, Errno> {
|
||||||
|
let file = self.open_files.get_mut(fd as usize).ok_or(Errno::EBADF)?;
|
||||||
|
let Inode::File(ref data) = self.inodes[file.inode] else {
|
||||||
|
return Err(Errno::EISDIR);
|
||||||
|
};
|
||||||
|
match pos {
|
||||||
|
file_rpc::SeekFrom::Start(offset) => {
|
||||||
|
file.pos = offset as usize;
|
||||||
|
}
|
||||||
|
file_rpc::SeekFrom::End(offset) => {
|
||||||
|
if offset <= 0 {
|
||||||
|
file.pos = data.len() - (-offset) as usize;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
file_rpc::SeekFrom::Current(offset) => {
|
||||||
|
if offset > 0 {
|
||||||
|
file.pos = usize::min(file.pos + offset as usize, data.len());
|
||||||
|
} else {
|
||||||
|
let offset = (-offset) as usize;
|
||||||
|
if offset > file.pos {
|
||||||
|
file.pos = 0;
|
||||||
|
} else {
|
||||||
|
file.pos -= offset;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
Ok(file.pos as u64)
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn dir_next(&mut self, fd: u32) -> Result<Option<String>, Errno> {
|
||||||
|
let dir = self.open_files.get_mut(fd as usize).ok_or(Errno::EBADF)?;
|
||||||
|
let Inode::Directory(ref entries) = self.inodes[dir.inode] else {
|
||||||
|
return Err(Errno::ENOTDIR);
|
||||||
|
};
|
||||||
|
if dir.pos == entries.len() {
|
||||||
|
Ok(None)
|
||||||
|
} else {
|
||||||
|
let name = entries[dir.pos].name.clone();
|
||||||
|
dir.pos += 1;
|
||||||
|
Ok(Some(name.to_string_lossy().into_owned()))
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue
Block a user