75 lines
2.3 KiB
Rust
75 lines
2.3 KiB
Rust
//! 中间归档只检查文件属性；读取计数与异常文件覆盖不启动 Go 工具。
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use super::*;
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use std::os::unix::fs::symlink;
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fn stage() -> Stage {
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let root = std::env::temp_dir().join(format!(
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"dever-go-output-{}-{}",
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std::process::id(),
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std::time::SystemTime::now()
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.duration_since(std::time::UNIX_EPOCH)
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.unwrap()
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.as_nanos()
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));
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fs::DirBuilder::new().mode(0o700).create(&root).unwrap();
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Stage {
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root,
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resources: BTreeMap::new(),
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written: 0,
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started: Instant::now(),
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}
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}
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#[test]
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fn go_intermediate_output_checks_metadata_without_reading_archive() {
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let stage = stage();
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let path = stage.root.join("package.a");
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let length = 8 * 1024 * 1024;
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fs::File::create(&path).unwrap().set_len(length).unwrap();
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let read_chars = || {
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fs::read_to_string("/proc/thread-self/io")
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.unwrap()
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.lines()
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.find_map(|line| line.strip_prefix("rchar: "))
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.unwrap()
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.parse::<u64>()
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.unwrap()
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};
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let before = read_chars();
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drop(stage.output(&path).unwrap());
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let consumed = read_chars() - before;
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eprintln!("go intermediate: fixture=sparse-zero bytes={length} rchar={consumed}");
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assert!(
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consumed < 4096,
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"read {consumed} bytes for a metadata check"
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);
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assert_eq!(fs::metadata(path).unwrap().len(), length);
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}
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#[test]
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fn go_output_rejects_links_empty_special_and_oversized_files() {
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let stage = stage();
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let path = stage.root.join("output");
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fs::write(&path, b"archive").unwrap();
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drop(stage.output(&path).unwrap());
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let link = stage.root.join("symbolic");
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symlink(&path, &link).unwrap();
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assert!(stage.output(&link).is_err());
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fs::remove_file(link).unwrap();
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let link = stage.root.join("hard");
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fs::hard_link(&path, &link).unwrap();
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assert!(stage.output(&path).is_err());
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fs::remove_file(link).unwrap();
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assert!(stage.output(&stage.root).is_err());
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fs::File::create(&path).unwrap();
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assert!(stage.output(&path).is_err());
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fs::File::create(&path)
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.unwrap()
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.set_len(128 * 1024 * 1024 + 1)
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.unwrap();
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assert!(stage.output(&path).is_err());
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fs::remove_file(&path).unwrap();
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assert!(stage.output(&path).is_err());
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}
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