feat: 新增 disk.inode/disk.check 磁盘健康检查命令

internal/executor/diskinode.go

@@ -0,0 +1,66 @@
+package executor
+
+import (
+	"context"
+	"fmt"
+	"os/exec"
+	"runtime"
+	"strings"
+)
+
+// runDiskInode implements `kopsc disk inode`: show inode usage.
+func runDiskInode(ctx context.Context, req BuiltinRequest) error {
+	opts, err := parseDiskInodeArgs(req.Args)
+	if err != nil {
+		return err
+	}
+
+	path := opts.path
+	if path == "" {
+		path = "."
+	}
+
+	switch runtime.GOOS {
+	case "linux", "darwin":
+		return diskInodeUnix(ctx, req, path)
+	case "windows":
+		return fmt.Errorf("Windows 不支持 inode（NTFS 使用 MFT，无 inode 概念）")
+	default:
+		return fmt.Errorf("不支持的操作系统: %s", runtime.GOOS)
+	}
+}
+
+type diskInodeOptions struct {
+	path string
+}
+
+func parseDiskInodeArgs(args []string) (diskInodeOptions, error) {
+	var opts diskInodeOptions
+	var positional []string
+
+	for i := 0; i < len(args); i++ {
+		arg := args[i]
+		switch {
+		case arg == "--":
+			positional = append(positional, args[i+1:]...)
+			i = len(args)
+		case strings.HasPrefix(arg, "-") && arg != "-":
+			return opts, fmt.Errorf("未知选项 %q", arg)
+		default:
+			positional = append(positional, arg)
+		}
+	}
+
+	if len(positional) > 0 {
+		opts.path = positional[0]
+	}
+	return opts, nil
+}
+
+func diskInodeUnix(ctx context.Context, req BuiltinRequest, path string) error {
+	// Use df -i to get inode info
+	cmd := exec.CommandContext(ctx, "df", "-i", path)
+	cmd.Stdout = req.Stdout
+	cmd.Stderr = req.Stderr
+	return cmd.Run()
+}