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|
use anyhow::bail;
use std::fs;
use std::io::Write;
use std::process::{self, Command, ExitCode};
use std::thread;
use std::time::Duration;
use sys_mount::{Mount, Unmount, UnmountDrop, UnmountFlags};
use termcolor::{Color, ColorChoice, ColorSpec, StandardStream, WriteColor};
fn start() -> anyhow::Result<()> {
let mut stdout = StandardStream::stdout(ColorChoice::Always);
stdout.set_color(ColorSpec::new().set_fg(Some(Color::Yellow)))?;
writeln!(&mut stdout, "Starting rustkrazy")?;
for service in fs::read_dir("/bin")? {
let service = service?;
let service_name = match service.file_name().into_string() {
Ok(v) => v,
Err(_) => bail!("[ ERROR ] invalid unicode in file name"),
};
if service_name == "init" {
continue;
}
match Command::new(service.path()).spawn() {
Ok(_) => {
stdout.set_color(ColorSpec::new().set_fg(Some(Color::Green)))?;
write!(&mut stdout, "[ OK ] Starting {}", service_name)?;
stdout.reset()?;
writeln!(&mut stdout)?;
}
Err(e) => {
stdout.set_color(ColorSpec::new().set_fg(Some(Color::Red)))?;
write!(&mut stdout, "[ ERROR ] Starting {}: {}", service_name, e)?;
stdout.reset()?;
writeln!(&mut stdout)?;
}
}
}
Ok(())
}
fn mount_or_halt(part_id: u8, mount_point: &str, fs: &str) -> UnmountDrop<Mount> {
let mut stdout = StandardStream::stdout(ColorChoice::Always);
let mut mount = None;
let mut mount_err = None;
let devs = [
format!("/dev/mmcblk0p{}", part_id),
format!("/dev/sda{}", part_id),
format!("/dev/vda{}", part_id),
];
for dev in &devs {
match Mount::builder().fstype(fs).mount(dev, mount_point) {
Ok(v) => {
mount = Some(v.into_unmount_drop(UnmountFlags::DETACH));
break;
}
Err(e) => {
mount_err = Some(e);
}
};
}
match mount {
None => {
if let Some(e) = mount_err {
match stdout.set_color(ColorSpec::new().set_fg(Some(Color::Red))) {
Ok(_) => {
match writeln!(&mut stdout, "[ ERROR ] Can't mount {}: {}", mount_point, e)
{
Ok(_) => {}
Err(_) => println!("[ ERROR ] Can't mount {}: {}", mount_point, e),
}
}
Err(_) => println!("[ ERROR ] Can't mount {}: {}", mount_point, e),
}
} else {
match stdout.set_color(ColorSpec::new().set_fg(Some(Color::Red))) {
Ok(_) => match writeln!(
&mut stdout,
"[ ERROR ] Can't mount {}: Unknown error (this shouldn't happen)",
mount_point
) {
Ok(_) => {}
Err(_) => println!(
"[ ERROR ] Can't mount {}: Unknown error (this shouldn't happen)",
mount_point
),
},
Err(_) => {
println!(
"[ ERROR ] Can't mount {}: Unknown error (this shouldn't happen)",
mount_point
)
}
}
}
loop {
thread::sleep(Duration::MAX);
}
}
Some(handle) => handle,
}
}
fn main() -> ExitCode {
let mut stdout = StandardStream::stdout(ColorChoice::Always);
let _boot_handle = mount_or_halt(1, "/boot", "vfat");
let _data_handle = mount_or_halt(4, "/data", "ext4");
let _tmp_handle = Mount::builder()
.fstype("tmpfs")
.mount("tmpfs", "/tmp")
.expect("can't mount /tmp tmpfs");
if process::id() != 1 {
match stdout.set_color(ColorSpec::new().set_fg(Some(Color::Red))) {
Ok(_) => match writeln!(&mut stdout, "Must be run as PID 1") {
Ok(_) => {}
Err(_) => println!("Must be run as PID 1"),
},
Err(_) => {
println!("Must be run as PID 1");
}
}
loop {
thread::sleep(Duration::MAX);
}
}
match start() {
Ok(_) => {}
Err(e) => match stdout.set_color(ColorSpec::new().set_fg(Some(Color::Red))) {
Ok(_) => match writeln!(&mut stdout, "[ ERROR ] {}", e) {
Ok(_) => {}
Err(_) => println!("[ ERROR ] {}", e),
},
Err(_) => {
println!("[ ERROR ] {}", e);
}
},
}
loop {
thread::sleep(Duration::MAX);
}
}
|
