1.3.21.3.2

native/sync-linux/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "sync-linux"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["lib"]
+
+[dependencies]
+# 不依赖 sync-core，避免循环依赖
+notify = { version = "7", features = ["macos_fsevent"] }
+walkdir = "2"
+thiserror = { workspace = true }
+tracing = "0.1"
+anyhow = { workspace = true }
+tokio = { workspace = true }
+async-trait = "0.1"

native/sync-linux/src/lib.rs

@@ -0,0 +1,80 @@
+#![cfg(target_os = "linux")]
+
+//! Linux 平台适配层
+//!
+//! 提供文件系统监听 (notify/inotify) 用于：
+//! - 实时检测本地文件变更
+//! - inotify 限制检测与配置
+//! - 混合模式（事件+轮询）切换
+
+use std::path::Path;
+
+pub struct LinuxAdapter {
+    watcher: Option<notify::RecommendedWatcher>,
+}
+
+impl Default for LinuxAdapter {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl LinuxAdapter {
+    pub fn new() -> Self {
+        Self { watcher: None }
+    }
+
+    /// 启动文件监听 (Phase 3)
+    pub fn start_watching(&mut self, _root: &Path) -> anyhow::Result<()> {
+        // Phase 3: 实现 notify 监听
+        Ok(())
+    }
+
+    /// 停止监听
+    pub fn stop_watching(&mut self) -> anyhow::Result<()> {
+        if let Some(w) = self.watcher.take() {
+            drop(w);
+        }
+        Ok(())
+    }
+}
+
+/// inotify 限制检测
+pub struct InotifyConfig;
+
+impl InotifyConfig {
+    pub fn check_limits() -> InotifyStatus {
+        let max_watches = std::fs::read_to_string("/proc/sys/fs/inotify/max_user_watches")
+            .ok()
+            .and_then(|s| s.trim().parse().ok())
+            .unwrap_or(8192);
+
+        let max_user_instances = std::fs::read_to_string("/proc/sys/fs/inotify/max_user_instances")
+            .ok()
+            .and_then(|s| s.trim().parse().ok())
+            .unwrap_or(128);
+
+        InotifyStatus {
+            max_watches,
+            max_user_instances,
+            recommendation: if max_watches < 524288 {
+                Some("建议执行: echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p".to_string())
+            } else {
+                None
+            },
+        }
+    }
+}
+
+pub struct InotifyStatus {
+    pub max_watches: u64,
+    pub max_user_instances: u64,
+    pub recommendation: Option<String>,
+}
+
+/// 占位符信息 (Linux 不使用，保持接口一致)
+pub struct PlaceholderEntry {
+    pub relative_path: String,
+    pub file_size: u64,
+    pub is_dir: bool,
+}