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mod ioctl;
use clap::Parser;
use std::fs::File;
use std::os::fd::AsRawFd;
use std::path::{Path, PathBuf};
use std::sync::Arc;
use log::LevelFilter;
use users::{get_current_gid, get_current_uid};
use aya::AyaFS;
use aya::block_device::BLOCK_SIZE;
use aya::block_device::disk::Disk;
use crate::ioctl::ioctl_blkgetsize64;
#[derive(Parser, Debug)]
#[command(author, version, about)]
struct Args {
block_device: Option<PathBuf>,
#[arg(short, action = clap::ArgAction::Count)]
verbosity: u8,
}
fn get_device_size<T: AsRef<Path>>(path: T) -> u64 {
let device = File::options()
.write(true)
.open(path.as_ref())
.expect("Failed to open device.");
let device_raw_fd = device.as_raw_fd();
let mut device_size = 0u64;
let device_size_ptr = &mut device_size as *mut u64;
unsafe {
ioctl_blkgetsize64(device_raw_fd, device_size_ptr)
.expect("ioctl exceptions occur.");
}
device_size
}
fn main() {
let args = Args::parse();
let device_path = args.block_device
.expect("Not device path specified.");
let verbosity = args.verbosity;
let log_level = match verbosity {
0 => LevelFilter::Error,
1 => LevelFilter::Warn,
2 => LevelFilter::Info,
3 => LevelFilter::Debug,
_ => LevelFilter::Trace,
};
env_logger::builder().filter_level(log_level).init();
let device_size = get_device_size(device_path.as_path());
let disk = Arc::new(Disk::new(device_path));
let mut fs = AyaFS::new(
disk,
device_size as usize / BLOCK_SIZE,
get_current_uid(),
get_current_gid(),
);
fs.write_back();
}
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