it works

vfs/fileinfo.go

@@ -0,0 +1,47 @@
+package vfs
+
+import (
+	"os"
+	"time"
+)
+
+type FileInfo struct {
+	name  string
+	size  int64
+	MTime time.Time
+	ATime time.Time
+}
+
+func NewFileInfo(name string, size int64, modTime time.Time) *FileInfo {
+	return &FileInfo{
+		name:  name,
+		size:  size,
+		MTime: modTime,
+		ATime: time.Now(),
+	}
+}
+
+func NewFileInfoFromOS(f os.FileInfo, key string) *FileInfo {
+	return &FileInfo{
+		name:  key,
+		size:  f.Size(),
+		MTime: f.ModTime(),
+		ATime: time.Now(),
+	}
+}
+
+func (f FileInfo) Name() string {
+	return f.name
+}
+
+func (f FileInfo) Size() int64 {
+	return f.size
+}
+
+func (f FileInfo) ModTime() time.Time {
+	return f.MTime
+}
+
+func (f FileInfo) AccessTime() time.Time {
+	return f.ATime
+}