diff --git a/services/etc/group b/services/etc/group
index c3082eded4671686f4f1a3bacdd2d4385558ea2c..20178d35d01e4f019032e7f3293476d078af012f 100755
--- a/services/etc/group
+++ b/services/etc/group
@@ -27,6 +27,7 @@ net_bw_acct:x:3007:
 readproc:x:3009:
 wakelock:x:3010:
 uhid:x:3011:
+ddms:x:3012:
 access_token:x:3020:
 misc:x:9998:
 app:x:10000:
diff --git a/services/etc/passwd b/services/etc/passwd
index 4d3d644018f1110f470d5f37e3b4a96017e78bc5..9531637c51d771b8468e81f4b30ea06d140a1573 100755
--- a/services/etc/passwd
+++ b/services/etc/passwd
@@ -27,6 +27,7 @@ net_bw_acct:x:3007:3007:::/bin/false
 readproc:x:3009:3009:::/bin/false
 wakelock:x:3010:3010:::/bin/false
 uhid:x:3011:3011:::/bin/false
+ddms:x:3012:3012:::/bin/false
 access_token:x:3020:3020:::/bin/false
 misc:x:9998:9998:::/bin/false
 app:x:10000:10000:::/bin/false
diff --git a/services/init/include/init_service.h b/services/init/include/init_service.h
index ef19acf86b7556e52b04776793922bf844feca73..2e2dd0da4cbde4c92c0f745570800f8745aa0e0d 100755
--- a/services/init/include/init_service.h
+++ b/services/init/include/init_service.h
@@ -51,7 +51,7 @@ extern "C" {
 
 #define FULL_CAP 0xFFFFFFFF
 // init
-#define DEFAULT_UMASK_INIT 022
+#define DEFAULT_UMASK_INIT 002
 
 #define CAP_NUM 2