Crates.io | ext4_rs |
lib.rs | ext4_rs |
version | 1.1.0 |
source | src |
created_at | 2024-05-06 00:02:48.888871 |
updated_at | 2024-06-08 09:39:10.87076 |
description | Cross-platform rust ext4. |
homepage | |
repository | https://github.com/yuoo655/ext4_rs |
max_upload_size | |
id | 1230629 |
size | 1,143,516 |
wsl2 ubuntu22.04
rust version nightly-2024-06-01
rustc 1.80.0-nightly (ada5e2c7b 2024-05-31)
git clone https://github.com/yuoo655/ext4_rs.git
sh run.sh
git clone https://github.com/yuoo655/ext4libtest.git
cd ext4libtest
sh gen_img.sh
# cargo run /path/to/mountpoint
cargo run ./foo/
操作 | 支持情况 |
---|---|
mount | ✅ |
open | ✅ |
close | ✅ |
lsdir | ✅ |
mkdir | ✅ |
read_file | ✅ |
read_link | ✅ |
create_file | ✅ |
write_file | ✅ |
link | ✅ |
unlink | ✅ |
file_truncate | ✅ |
file_remove | ✅ |
umount | ✅ |
dir_remove | ✅ |
#[derive(Debug)]
pub struct Disk {}
impl BlockDevice for Disk {
fn read_offset(&self, offset: usize) -> Vec<u8> {
use std::fs::OpenOptions;
use std::io::{Read, Seek};
let mut file = OpenOptions::new()
.read(true)
.write(true)
.open("ex4.img")
.unwrap();
let mut buf = vec![0u8; BLOCK_SIZE as usize];
let _r = file.seek(std::io::SeekFrom::Start(offset as u64));
let _r = file.read_exact(&mut buf);
buf
}
fn write_offset(&self, offset: usize, data: &[u8]) {
use std::fs::OpenOptions;
use std::io::{Seek, Write};
let mut file = OpenOptions::new()
.read(true)
.write(true)
.open("ex4.img")
.unwrap();
let _r = file.seek(std::io::SeekFrom::Start(offset as u64));
let _r = file.write_all(&data);
}
}
let disk = Arc::new(Disk {});
let ext4 = Ext4::open(disk);
let path = "/test_files/1.txt";
let mut ext4_file = Ext4File::new();
let r = ext4.ext4_open(&mut ext4_file, path, "r+", false);
assert!(r.is_ok(), "open file error {:?}", r.err());
let mut read_buf = vec![0u8; 0x20000000];
let mut read_cnt = 0;
let r = ext4.ext4_file_read(&mut ext4_file, &mut read_buf, 0x20000000, &mut read_cnt);
assert!(r.is_ok(), "open file error {:?}", r.err());
log::info!("----read link file----");
let path = "/test_files/linktest";
let mut ext4_file = Ext4File::new();
let r = ext4.ext4_open(&mut ext4_file, path, "r+", false);
assert!(r.is_ok(), "open link error {:?}", r.err());
let mut read_buf = vec![0u8; 0x1000];
let mut read_cnt = 0;
let r = ext4.ext4_file_read(&mut ext4_file, &mut read_buf, 0x1000, &mut read_cnt);
assert!(r.is_ok(), "read link error {:?}", r.err());
log::info!("read data sample {:x?}", &read_buf[0..10]);
for i in 0..10 {
let path = format!("dirtest{}", i);
let path = path.as_str();
let r = ext4.ext4_dir_mk(&path);
assert!(r.is_ok(), "dir make error {:?}", r.err());
}
const WRITE_SIZE: usize = 0x400000;
let path = format!("dirtest{}/write_{}.txt", i, i);
let path = path.as_str();
let mut ext4_file = Ext4File::new();
let r = ext4.ext4_open(&mut ext4_file, path, "w+", true);
assert!(r.is_ok(), "open file error {:?}", r.err());
let write_data = vec![0x41 + i as u8; WRITE_SIZE];
ext4.ext4_file_write(&mut ext4_file, &write_data, WRITE_SIZE);
// test
let r = ext4.ext4_open(&mut ext4_file, path, "r+", false);
assert!(r.is_ok(), "open file error {:?}", r.err());
let mut read_buf = vec![0u8; WRITE_SIZE];
let mut read_cnt = 0;
let r = ext4.ext4_file_read(&mut ext4_file, &mut read_buf, WRITE_SIZE, &mut read_cnt);
assert!(r.is_ok(), "open file error {:?}", r.err());
assert_eq!(write_data, read_buf);
let path = "test_files";
let mut ext4_file = Ext4File::new();
let r = ext4.ext4_open(&mut ext4_file, path, "r+", false);
assert!(r.is_ok(), "open link error {:?}", r.err());
let de = ext4.read_dir_entry(ext4_file.inode as _);
for i in de.iter() {
log::info!("{:?}", i.get_name());
}
let path = "test_files/file_to_remove";
let r = ext4.ext4_file_remove(&path);
let path = "dir_to_remove";
// remove dir from root inode 2
let r = ext4.ext4_dir_remove(2, &path);