test: test mkdir open

.gitignore

@@ -1 +1,4 @@
-/target
+/target
+
+/ext4_test/target
+/ext4_test/ext4.img

ext4_test/Cargo.lock

@@ -0,0 +1,263 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
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+ "byteorder",
+ "log",
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+
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+ "log",
+ "simple_logger",
+]
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+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
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ext4_test/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "ext4_test"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+ext4_rs = { path = ".." }
+simple_logger = "4.3"
+log = "0.4"

ext4_test/src/main.rs

@@ -0,0 +1,92 @@
+use ext4_rs::{BlockDevice, Ext4, BLOCK_SIZE};
+use log::info;
+use simple_logger::SimpleLogger;
+use std::fs::{File, OpenOptions};
+use std::io::{Read, Seek, SeekFrom, Write};
+use std::sync::Arc;
+
+#[derive(Debug)]
+pub struct BlockFile(File);
+
+impl BlockFile {
+    pub fn new(path: &str) -> Self {
+        let file = OpenOptions::new()
+            .read(true)
+            .write(true)
+            .open(path)
+            .unwrap();
+        Self(file)
+    }
+}
+
+impl BlockDevice for BlockFile {
+    fn read_offset(&self, offset: usize) -> Vec<u8> {
+        info!("Reading block at offset {}", offset);
+        let mut file = &self.0;
+        let mut buffer = vec![0u8; BLOCK_SIZE];
+        let _r = file.seek(SeekFrom::Start(offset as u64));
+        let _r = file.read_exact(&mut buffer);
+        buffer
+    }
+
+    fn write_offset(&self, offset: usize, data: &[u8]) {
+        info!("Writing block at offset {}", offset);
+        let mut file = &self.0;
+        let _r = file.seek(SeekFrom::Start(offset as u64));
+        let _r = file.write_all(data);
+    }
+}
+
+fn logger_init() {
+    SimpleLogger::new().init().unwrap();
+    log::set_max_level(log::LevelFilter::Debug);
+}
+
+fn make_ext4() {
+    let _ = std::process::Command::new("rm")
+        .args(["-rf", "ext4.img"])
+        .status();
+    let _ = std::process::Command::new("dd")
+        .args(["if=/dev/zero", "of=ext4.img", "bs=1M", "count=512"])
+        .status();
+    let _ = std::process::Command::new("mkfs.ext4")
+        .args(["ext4.img"])
+        .output();
+}
+
+fn open_ext4() -> Ext4 {
+    let file = BlockFile::new("ext4.img");
+    println!("creating ext4");
+    Ext4::load(Arc::new(file))
+}
+
+fn mkdir_test(ext4: &mut Ext4) {
+    ext4.ext4_dir_mk("1").expect("mkdir failed");
+    ext4.ext4_dir_mk("1/2").expect("mkdir failed");
+    ext4.ext4_dir_mk("1/2/3").expect("mkdir failed");
+    ext4.ext4_dir_mk("1/2/3/4").expect("mkdir failed");
+    ext4.ext4_dir_mk("2").expect("mkdir failed");
+    ext4.ext4_dir_mk("2/3").expect("mkdir failed");
+    ext4.ext4_dir_mk("2/3/4").expect("mkdir failed");
+    ext4.ext4_dir_mk("3").expect("mkdir failed");
+}
+
+fn open_test(ext4: &mut Ext4) {
+    ext4.ext4_open("1/2/3/4/5", "w+", true)
+        .expect("open failed");
+    ext4.ext4_open("1/2/3/4/5", "r", true).expect("open failed");
+    ext4.ext4_open("1/2/3/4/5", "a", true).expect("open failed");
+    ext4.ext4_open("4", "w+", true).expect("open failed");
+}
+
+fn main() {
+    logger_init();
+    make_ext4();
+    println!("ext4.img created");
+    let mut ext4 = open_ext4();
+    println!("ext4 opened");
+    mkdir_test(&mut ext4);
+    println!("mkdir test done");
+    open_test(&mut ext4);
+    println!("open test done");
+}