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+dependencies = [
+ "cfg-if",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.86"
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+dependencies = [
+ "bumpalo",
+ "log",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.16",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
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+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.16",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.86"
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+
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+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
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+
+[[package]]
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+
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+checksum = "75283be5efb2831d37ea142365f009c02ec203cd29a3ebecbc093d52315b66d0"
+dependencies = [
+ "windows-targets 0.42.2",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
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+ "windows-targets 0.48.0",
+]
+
+[[package]]
+name = "windows-targets"
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+dependencies = [
+ "windows_aarch64_gnullvm 0.42.2",
+ "windows_aarch64_msvc 0.42.2",
+ "windows_i686_gnu 0.42.2",
+ "windows_i686_msvc 0.42.2",
+ "windows_x86_64_gnu 0.42.2",
+ "windows_x86_64_gnullvm 0.42.2",
+ "windows_x86_64_msvc 0.42.2",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.48.0"
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+dependencies = [
+ "windows_aarch64_gnullvm 0.48.0",
+ "windows_aarch64_msvc 0.48.0",
+ "windows_i686_gnu 0.48.0",
+ "windows_i686_msvc 0.48.0",
+ "windows_x86_64_gnu 0.48.0",
+ "windows_x86_64_gnullvm 0.48.0",
+ "windows_x86_64_msvc 0.48.0",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
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+
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+
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+
+[[package]]
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+
+[[package]]
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+
+[[package]]
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+
+[[package]]
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+
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+
+[[package]]
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+checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca2b8a661f7628cbd23440e50b05d705db3686f894fc9580820623656af974b1"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.42.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7896dbc1f41e08872e9d5e8f8baa8fdd2677f29468c4e156210174edc7f7b953"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.42.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a515f5799fe4961cb532f983ce2b23082366b898e52ffbce459c86f67c8378a"
+
+[[package]]
+name = "winnow"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "61de7bac303dc551fe038e2b3cef0f571087a47571ea6e79a87692ac99b99699"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "yukari"
+version = "0.1.0"
+dependencies = [
+ "bcrypt",
+ "common_macros",
+ "easy-repl",
+ "lazy_static",
+ "nix 0.26.2",
+ "pkg_compile_time",
+ "serde",
+ "simple-rw-global",
+ "tokio",
+ "toml",
+]
+
+[[package]]
+name = "zeroize"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2a0956f1ba7c7909bfb66c2e9e4124ab6f6482560f6628b5aaeba39207c9aad9"

Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+name = "yukari"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+nix = "0.26.2"
+easy-repl = "0.2.1"
+tokio = { version = "1.28.1", features = ["full"] }
+lazy_static = "1.4.0"
+simple-rw-global = { version="0.4.0", features=["tokio"] }
+toml = "0.7.4"
+serde = { version = "1.0", features = ["derive"] }
+common_macros = "0.1.1"
+bcrypt = "0.14.0"
+pkg_compile_time = "0.1.3"

src/cfg/boot.rs

@@ -0,0 +1,14 @@
+use serde::Deserialize;
+
+#[derive(Deserialize, Clone)]
+pub struct BootConfigDef{
+    pub hostname: String,
+}
+
+impl BootConfigDef {
+    pub fn default() -> BootConfigDef {
+        BootConfigDef{
+            hostname: "ELIP4NG-Default-Hostname".to_string(),
+        }
+    }
+}

src/cfg/etc.rs

@@ -0,0 +1,38 @@
+use std::collections::HashMap;
+use serde::Deserialize;
+use common_macros::hash_map;
+use crate::cfg::boot::BootConfigDef;
+
+#[derive(Deserialize, Clone)]
+pub struct EtcConfigDef{
+    pub sys: SysCfg,
+    pub boot_default: BootConfigDef,
+    pub secure: SecureCfg,
+}
+
+impl EtcConfigDef {
+    pub fn default() -> EtcConfigDef {
+        EtcConfigDef{
+            boot_default: BootConfigDef::default(),
+            secure: SecureCfg{
+                bcrypt_password: "$2a$10$9Nk9um4osOsdDPw.NjgBx.0qbQ/5H/qLXplaNjBeKKj6N13.PE3YK".to_string(),
+            }
+        }
+    }
+
+    pub fn get_boot_default_clone(&self) -> BootConfigDef{
+        self.boot_default.clone()
+    }
+}
+
+#[derive(Deserialize, Clone)]
+pub struct SecureCfg {
+    pub bcrypt_password: String,
+}
+
+#[derive(Deserialize, Clone)]
+pub struct SysCfg {
+    pub admin_shell: String,
+    pub sys_loader: String,
+    pub service_mgr: String,
+}

src/cfg/mod.rs

@@ -0,0 +1,125 @@
+mod etc;
+mod boot;
+
+use std::fmt::{Debug, Display, Formatter};
+use std::fs::File;
+use std::io::{Read};
+use std::path::Path;
+use lazy_static::lazy_static;
+use serde::de::DeserializeOwned;
+use simple_rw_global::tokio::AsyncGlobalContainer;
+use crate::cfg::boot::BootConfigDef;
+use crate::cfg::etc::EtcConfigDef;
+
+const INIT_ETC_CFG_FILENAME:&str = "/etc/init.toml";
+const INIT_BOOT_CFG_FILENAME:&str = "/boot/config/init.toml";
+
+lazy_static! {
+    pub static ref CFG : AsyncGlobalContainer<ConfigManager> = AsyncGlobalContainer::new();
+}
+
+pub struct ConfigManager {
+    boot_cfg: BootConfigDef,
+    etc_cfg: EtcConfigDef,
+}
+
+impl ConfigManager {
+    pub fn empty() -> ConfigManager{
+        let etc_cfg = EtcConfigDef::default();
+        let boot_cfg = etc_cfg.get_boot_default_clone();
+        ConfigManager{ etc_cfg, boot_cfg }
+    }
+
+    pub fn load() -> ConfigManager{
+        println!("Loading config from '{}'...", INIT_ETC_CFG_FILENAME);
+        let etc_res = ConfigManager::load_file::<EtcConfigDef>(INIT_ETC_CFG_FILENAME);
+        let etc_cfg = match etc_res {
+            Ok(s) => {s}
+            Err(err) => {
+                ConfigManager::print_cfg_fail_info(INIT_ETC_CFG_FILENAME, err);
+                EtcConfigDef::default()
+            }
+        };
+        println!("Loading config from '{}'...", INIT_BOOT_CFG_FILENAME);
+        let boot_res = ConfigManager::load_file::<BootConfigDef>(INIT_BOOT_CFG_FILENAME);
+        let boot_cfg = match boot_res {
+            Ok(s) => {s}
+            Err(err) => {
+                ConfigManager::print_cfg_fail_info(INIT_BOOT_CFG_FILENAME, err);
+                etc_cfg.get_boot_default_clone()
+            }
+        };
+        ConfigManager{etc_cfg, boot_cfg}
+    }
+
+    fn load_file<T>(fname: &str) -> Result<T, CfgError>
+        where T: DeserializeOwned,
+    {
+        let fpath = Path::new(fname);
+        let mut file = File::open(fpath)?;
+        let mut toml_str = String::new();
+        file.read_to_string(&mut toml_str)?;
+        let etc = toml::from_str(&toml_str)?;
+        Ok(etc)
+    }
+
+    fn print_cfg_fail_info(cfgname: &str, err: CfgError) {
+        println!("[ERROR] config '{}' load failed: {:?}", cfgname, err);
+        println!("Use default setting instead, but some functions may not be available.");
+        println!("If you are a user:\n\tPlease contact the device manufacturer for help.");
+        println!("If you are the manufacturer:\n\tPlease use maintenance shell looking for detail.");
+    }
+
+    pub fn get_etc_cfg(&self) -> &EtcConfigDef {
+        &self.etc_cfg
+    }
+
+    pub fn get_boot_cfg(&self) -> &BootConfigDef {
+        &self.boot_cfg
+    }
+}
+
+pub async fn init_config_manager() {
+    let cm = ConfigManager::load();
+    //let cm = ConfigManager::empty();
+    CFG.set(cm).await;
+}
+
+pub enum CfgError{
+    IOError(std::io::Error),
+    DeserializeError(toml::de::Error),
+}
+
+impl Debug for CfgError {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        match self {
+            CfgError::IOError(e) => {
+                write!(f, "IOError: {:?}", e)
+            }
+            CfgError::DeserializeError(e) => {
+                write!(f, "DeserializeError: {:?}", e)
+            }
+        }
+    }
+}
+
+impl Display for CfgError {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        (self as &dyn Debug).fmt(f)
+    }
+}
+
+impl std::error::Error for CfgError {
+}
+
+impl From<std::io::Error> for CfgError {
+    fn from(value: std::io::Error) -> Self {
+        CfgError::IOError(value)
+    }
+}
+
+impl From<toml::de::Error> for CfgError {
+    fn from(value: toml::de::Error) -> Self {
+        CfgError::DeserializeError(value)
+    }
+}

src/logger/mod.rs

@@ -0,0 +1,111 @@
+use std::fmt::{Display, Formatter};
+use tokio::io::{AsyncWriteExt, Stderr};
+use tokio::sync::mpsc::{channel, Sender, Receiver};
+
+use std::sync::atomic::{AtomicBool, Ordering};
+use lazy_static::lazy_static;
+
+lazy_static!{
+    static ref DEBUG_MODE: AtomicBool = AtomicBool::new(false);
+}
+
+pub struct Logger {
+    tx: Sender<String>,
+    rx: Receiver<String>,
+    out: Stderr
+}
+
+impl Logger {
+    pub fn new() -> Logger {
+        let (tx, rx) = channel(1);
+        let out = tokio::io::stderr();
+        Logger{
+            tx,
+            rx,
+            out,
+        }
+    }
+
+    pub async fn printing(&mut self) {
+        loop {
+            let s = self.rx.recv().await;
+            match s {
+                None => {}
+                Some(t) => {
+                    let _ = self.out.write_all(t.as_bytes()).await;
+                }
+            }
+        }
+    }
+
+    pub fn get_writer(&mut self, prefix: String) -> LogWriter {
+        LogWriter{tx: self.tx.clone(), prefix }
+    }
+}
+
+pub struct LogWriter {
+    prefix: String,
+    tx: Sender<String>,
+}
+
+impl LogWriter {
+    async fn log(&self, lv: LogLevel, msg: &str) {
+        let _ = self.tx.send(format!("[LOG] <{}> ({}) {}\n", lv, self.prefix.as_str(), msg)).await;
+    }
+
+    #[inline]
+    pub async fn info(&self, msg: &str) {
+        self.log(LogLevel::Info, msg).await;
+    }
+
+    #[inline]
+    pub async fn warn(&self, msg: &str) {
+        self.log(LogLevel::Warn, msg).await;
+    }
+
+    #[inline]
+    pub async fn error(&self, msg: &str) {
+        self.log(LogLevel::Error, msg).await;
+    }
+
+    #[inline]
+    pub async fn fatal(&self, msg: &str) {
+        self.log(LogLevel::Fatal, msg).await;
+    }
+
+    #[inline]
+    pub async fn debug(&self, msg: &str) {
+        if DEBUG_MODE.load(Ordering::Relaxed) {
+            self.log(LogLevel::Debug, msg).await;
+        }
+    }
+
+    pub fn is_debug_mode() -> bool {
+        DEBUG_MODE.load(Ordering::Relaxed)
+    }
+}
+
+enum LogLevel {
+    Debug,
+    Info,
+    Warn,
+    Error,
+    Fatal,
+}
+
+impl Display for LogLevel {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        let s = match self {
+            LogLevel::Info => "I",
+            LogLevel::Warn => "W",
+            LogLevel::Error => "E",
+            LogLevel::Fatal => "F",
+            LogLevel::Debug => "D",
+        };
+        write!(f, "{}", s)
+    }
+}
+
+pub fn set_debug_mode(mode: bool) {
+    DEBUG_MODE.store(mode, Ordering::Relaxed);
+}

src/main.rs

@@ -0,0 +1,96 @@
+use std::{process, thread};
+use std::time::Duration;
+use tokio::task::JoinSet;
+use crate::reaper::Reaper;
+use pkg_compile_time::{pkg_compile_date, pkg_compile_time};
+
+mod shell;
+mod syscall;
+mod reaper;
+mod logger;
+mod sysinit;
+mod cfg;
+mod tty;
+
+#[tokio::main(flavor = "multi_thread", worker_threads = 2)]
+async fn main() {
+
+    println!("==== yukari - ELIP4NG Init Process. ====");
+    println!();
+
+    let pid = process::id();
+
+    if pid != 1 {
+        panic!("yukari must run as PID 1.");
+    }
+
+    println!("load config...");
+    cfg::init_config_manager().await;
+
+    println!("spawning tty...");
+    tty::spawn_tty().await;
+
+    println!("hello, this is No.1 process (as sysinit) '/usr/sbin/yukari'.");
+    println!("this program is compile at {} {}", pkg_compile_date!(), pkg_compile_time!());
+    println!();
+    println!("you can < PRESS ENTER > at any time to enter maintenance shell.");
+    println!();
+    println!("---- yukari sysinit phase ----");
+
+    let mut logmux = logger::Logger::new();
+    let logger_reaper = logmux.get_writer(String::from("reaper"));
+    let logger_sysinit = logmux.get_writer(String::from("sysinit"));
+
+    let zombie_reaper_res = Reaper::new(logger_reaper);
+    let mut zombie_reaper = match zombie_reaper_res {
+        Ok(r) => {r}
+        Err(err) => {
+            panic!("zombie reaper system sysinit failed: {:?}", err);
+        }
+    };
+
+    let mut sys_init = sysinit::SysInit::new(logger_sysinit);
+
+    let mut task_set = JoinSet::new();
+
+    task_set.spawn(async move {
+        logmux.printing().await;
+    });
+
+    task_set.spawn(async move {
+        let res = sys_init.prepare().await;
+        println!("---- yukari sysinit phase end ----");
+        match res {
+            None => {
+                println!("service management handover to supervisor");
+                println!();
+                println!("< PRESS ENTER > to enter maintenance shell.");
+                sys_init.run().await;
+            }
+            Some(err) => {
+                println!("[Error] error in sysinit phase: {:?}", err);
+                println!();
+                println!("< PRESS ENTER > to enter maintenance shell.");
+                loop{
+                    let _ = tokio::time::sleep(Duration::from_secs(10));
+                }
+            }
+        }
+    });
+
+    task_set.spawn_blocking(move || {
+        //shell::shell_wait_enter();
+        shell::shell_repl();
+    });
+
+    task_set.spawn( async move {
+        zombie_reaper.reap().await;
+    });
+
+    task_set.join_next().await;
+    println!("[FATAL] one of task exited. No.1 process will quit.");
+    task_set.abort_all();
+    println!("No.1 process quit. system will reboot after 5 seconds...");
+    let _ = tokio::time::sleep(Duration::from_secs(5));
+    syscall::power::safe_reboot();
+}

src/reaper/mod.rs

@@ -0,0 +1,73 @@
+use nix::sys::wait::{WaitPidFlag, WaitStatus};
+use tokio::signal::unix::{signal, SignalKind, Signal};
+use crate::logger::LogWriter;
+
+use std::sync::atomic::{AtomicU64, Ordering};
+use lazy_static::lazy_static;
+
+lazy_static!{
+    static ref REAP_COUNTER: AtomicU64 = AtomicU64::new(0);
+}
+
+pub struct Reaper {
+    sig_stream: Signal,
+    logger: LogWriter,
+}
+
+impl Reaper {
+    pub fn new(logger: LogWriter) -> Result<Self, std::io::Error> {
+        let stream = signal(SignalKind::child())?;
+        Ok(Reaper { sig_stream: stream, logger })
+    }
+
+    pub async fn reap(&mut self) -> ! {
+        loop {
+            self.sig_stream.recv().await;
+            loop {
+                let wstat = nix::sys::wait::waitpid(nix::unistd::Pid::from_raw(-1), Some(WaitPidFlag::WNOHANG));
+                match wstat {
+                    Ok(ws) => {
+                        if LogWriter::is_debug_mode() {
+                            let msg = match ws {
+                                WaitStatus::Exited(pid, ec) => {
+                                    Some(format!("{}: WIFEXITED ExitCode={}", pid, ec))
+                                }
+                                WaitStatus::Signaled(pid, sig, t) => {
+                                    Some(format!("{}: WIFSIGNALED Signal={}, IsCoreDump={}", pid, sig, t))
+                                }
+                                WaitStatus::Stopped(pid, c) => {
+                                    Some(format!("{}: WIFSTOPPED Code={}", pid, c))
+                                }
+                                WaitStatus::PtraceEvent(pid, sig, c) => {
+                                    Some(format!("{}: PTRACE_EVENT Signal={}, Value={}", pid, sig, c))
+                                }
+                                WaitStatus::PtraceSyscall(pid) => {
+                                    Some(format!("{}: PTRACE_SYSCALL", pid))
+                                }
+                                WaitStatus::Continued(pid) => {
+                                    Some(format!("{}: WCONTINUED", pid))
+                                }
+                                WaitStatus::StillAlive => {
+                                    None
+                                }
+                            };
+                            if let Some(v) = msg {
+                                REAP_COUNTER.fetch_add(1, Ordering::Relaxed);
+                                self.logger.error(format!("reap zombie child {}", v).as_str()).await;
+                            }
+                        }else{
+                            if ws != WaitStatus::StillAlive {
+                                REAP_COUNTER.fetch_add(1, Ordering::Relaxed);
+                            }
+                        }
+                    }
+                    Err(_) => {}
+                };
+            }
+        };
+    }
+}
+
+pub fn get_count() -> u64 {
+    REAP_COUNTER.load(Ordering::Relaxed)
+}

src/shell/mgrsh.rs

@@ -0,0 +1,40 @@
+use easy_repl::{command, CommandStatus, Repl};
+use crate::syscall;
+
+pub fn mgr_shell() {
+    let repl_bresult = Repl::builder()
+        .description("admin shell")
+        .prompt("[ M-Admin-Sh ] ")
+        .add("hello", command! {
+            "print hello",
+            () => || {
+                println!("hello!");
+                Ok(CommandStatus::Done)
+            }
+        })
+        .add("exec", command! {
+            "run a command, without arguments",
+            (shell: String) => |shell:String| {
+                syscall::proc::run(shell);
+                Ok(CommandStatus::Done)
+            }
+        })
+        .build();
+    let mut repl = match repl_bresult {
+        Ok(t) => t,
+        Err(err) => {
+            println!("[ERROR] admin Shell Init Fatal Error: {:?}", err);
+            return;
+        }
+    };
+    let repl_run_result = repl.run();
+    match repl_run_result {
+        Ok(_) => {
+            println!("Back to maintenance shell.");
+        }
+        Err(err) => {
+            println!("[ERROR] admin shell crash by error: {:?}", err);
+            println!("Back to maintenance shell.");
+        }
+    };
+}

src/shell/mod.rs

@@ -0,0 +1,100 @@
+mod mgrsh;
+
+use std::io;
+use easy_repl::{command, CommandStatus, Repl};
+use crate::{cfg, logger, syscall};
+use crate::reaper;
+
+pub fn shell_wait_enter() {
+    let stdin = io::stdin();
+    let mut sbuf = String::new();
+    let _ = stdin.read_line(&mut sbuf);
+}
+
+pub fn shell_repl() {
+    println!("---- yukari maintenance shell ----");
+    let repl_bresult = Repl::builder()
+        .description("    -- yukari maintenance shell --")
+        .prompt("< Maintenance Shell > ")
+        .add("print", command! {
+            "print what input",
+            (msg: String) => |msg:String| {
+                println!("{}", msg.as_str());
+                Ok(CommandStatus::Done)
+            }
+        })
+        .add("reboot", command! {
+            "reboot system",
+            () => || {
+                syscall::power::safe_reboot();
+            }
+        })
+        .add("shutdown", command! {
+            "shutdown system",
+            () => || {
+                syscall::power::safe_shutdown();
+            }
+        })
+        .add("debug-on", command! {
+            "turn on debug printing for yukari",
+            () => || {
+                logger::set_debug_mode(true);
+                Ok(CommandStatus::Done)
+            }
+        })
+        .add("debug-off", command! {
+            "turn off debug printing for yukari",
+            () => || {
+                logger::set_debug_mode(false);
+                Ok(CommandStatus::Done)
+            }
+        })
+        .add("get-reaper-counter", command! {
+            "print the zombie child reaper working counter",
+            () => || {
+                println!("{} zombie child reaped.", reaper::get_count());
+                Ok(CommandStatus::Done)
+            }
+        })
+        .add("login", command! {
+            "login to admin shell",
+            (password: String) => |password:String| {
+                let bhash = cfg::CFG.blocking_get().get_etc_cfg().secure.bcrypt_password.clone();
+                let res = bcrypt::verify(password, &bhash);
+                match res {
+                    Ok(b) => {
+                        if b {
+                            mgrsh::mgr_shell();
+                        }else{
+                            println!("incorrect password.")
+                        }
+                    }
+                    Err(err) => {
+                        println!("failed verify password: {:?}", err)
+                    }
+                }
+                Ok(CommandStatus::Done)
+            }
+        })
+        .build();
+    let mut repl = match repl_bresult {
+        Ok(t) => t,
+        Err(err) => {
+            println!("Maintenance Shell Init Fatal Error: {:?}", err);
+            return;
+        }
+    };
+    loop {
+        let repl_run_result = repl.run();
+        match repl_run_result {
+            Ok(_) => {
+                println!("[WARN] shouldn't quit this shell");
+                println!("shell will restart");
+            }
+            Err(err) => {
+                println!("[ERROR] shell crash by error: {:?}", err);
+                println!("shell will restart");
+            }
+        };
+    }
+}

src/syscall/mod.rs

@@ -0,0 +1,2 @@
+pub mod power;
+pub mod proc;

src/syscall/power.rs

@@ -0,0 +1,33 @@
+use nix::sys::reboot::RebootMode;
+
+pub fn shutdown()  -> !{
+    println!("system shutting down...");
+    let _ = nix::sys::reboot::reboot(RebootMode::RB_POWER_OFF);
+    loop {
+    }
+}
+
+pub fn reboot() -> ! {
+    println!("system rebooting...");
+    let _ = nix::sys::reboot::reboot(RebootMode::RB_AUTOBOOT);
+    loop {
+    }
+}
+
+pub fn safe_shutdown() -> ! {
+    sync();
+    sync();
+    sync();
+    shutdown()
+}
+
+pub fn safe_reboot() -> ! {
+    sync();
+    sync();
+    sync();
+    reboot()
+}
+
+pub fn sync() {
+    nix::unistd::sync();
+}

src/syscall/proc.rs

@@ -0,0 +1,27 @@
+use std::process::{Command};
+
+pub fn run(program: String) {
+    let p = Command::new(program.clone()).spawn();
+    match p {
+        Ok(mut ch) => {
+            let res = ch.wait();
+            match res {
+                Ok(es) => {
+                    match es.code() {
+                        None => {
+                            println!("exited with no code");
+                        }
+                        Some(code) => {
+                            println!("exited with code {}", code);
+                        }
+                    };
+                }
+                Err(_) => {}
+            }
+        }
+        Err(err) => {
+            println!("failed run command {}: {:?}", program.as_str(), err);
+            return;
+        }
+    }
+}

src/sysinit/mod.rs

@@ -0,0 +1,24 @@
+use std::io::Error;
+use std::time::Duration;
+use crate::logger::LogWriter;
+
+pub struct SysInit {
+    logger: LogWriter,
+    is_ready: bool,
+}
+
+impl SysInit {
+    pub fn new(logger: LogWriter) ->SysInit {
+        SysInit{logger, is_ready: false}
+    }
+
+    pub async fn prepare(&mut self) -> Option<Error> {
+        None
+    }
+
+    pub async fn run(&mut self) {
+        loop {
+            let _ = tokio::time::sleep(Duration::from_secs(10));
+        }
+    }
+}

src/tty/mod.rs

@@ -0,0 +1,4 @@
+
+pub async fn spawn_tty() {
+
+}