Add key migration to daemon

Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)

utils/utils_daemon.go

@@ -37,3 +37,13 @@ func TreeSize(dir string) (size int64, err error) {
 	})
 	return
 }
+
+// IsFileOwner checks whether the current user is the owner of the given file.
+func IsFileOwner(f string) bool {
+	if fileInfo, err := os.Stat(f); err == nil && fileInfo != nil {
+		if stat, ok := fileInfo.Sys().(*syscall.Stat_t); ok && int(stat.Uid) == os.Getuid() {
+			return true
+		}
+	}
+	return false
+}