add filesystem attr (on linux) support

fsutils/funcs.go

@@ -0,0 +1,44 @@
+package fsutils
+
+import (
+	`os`
+	`reflect`
+
+	`github.com/g0rbe/go-chattr`
+	`r00t2.io/sysutils/paths`
+)
+
+func GetAttrs(path string) (attrs *FsAttrs, err error) {
+
+	var f *os.File
+	var evalAttrs FsAttrs
+	var attrVal uint32
+	var reflectVal reflect.Value
+	var field reflect.Value
+	var myPath string = path
+
+	if err = paths.RealPath(&myPath); err != nil {
+		return
+	}
+
+	if f, err = os.Open(myPath); err != nil {
+		return
+	}
+	defer f.Close()
+
+	reflectVal = reflect.ValueOf(&evalAttrs).Elem()
+
+	if attrVal, err = chattr.GetAttrs(f); err != nil {
+		return
+	}
+
+	for attrNm, attrInt := range AttrNameValueMap {
+		field = reflectVal.FieldByName(attrNm)
+		field.SetBool((attrVal & attrInt) != 0)
+	}
+
+	attrs = new(FsAttrs)
+	*attrs = evalAttrs
+
+	return
+}