diff --git a/device_info/etc/deviceinfoservice.cfg b/device_info/etc/deviceinfoservice.cfg
index 29a985c0562eecb3d8d31e8d8b5a242ce56aca67..50560956e6828b9980381a2bd0fe86691d1c3ba9 100755
--- a/device_info/etc/deviceinfoservice.cfg
+++ b/device_info/etc/deviceinfoservice.cfg
@@ -13,8 +13,8 @@
     "services" : [{
             "name" : "deviceinfoservice",
             "path" : ["/system/bin/sa_main", "/system/profile/deviceinfoservice.xml"],
-            "uid" : "system",
-            "gid" : ["system", "shell"],
+            "uid" : "deviceinfo",
+            "gid" : ["deviceinfo", "shell"],
             "jobs" : {
                 "on-start" : "services:deviceinfoservice"
             },
diff --git a/services/etc/group b/services/etc/group
index fc4bcb11204f55e45e265e48dfa5f3eef3f8da25..a8ba1a538812f5f11c96c591e17a1080af62e04d 100644
--- a/services/etc/group
+++ b/services/etc/group
@@ -96,4 +96,8 @@ pasteboard:x:3816:
 wallpaper:x:3817:
 screenlock:x:3818:
 time:x:3819:
-inputmethod:x:3820:
\ No newline at end of file
+inputmethod:x:3820:
+watchdog:x:1100:
+paramwatcher:x:1101:
+deviceinfo:x:1102:
+accessibility:x:1103:
diff --git a/services/etc/init.without_two_stages.cfg b/services/etc/init.without_two_stages.cfg
index ce0afb5dc750d704c4b43a1ceb1741ef1129986f..e0445450d7ab5581cad1919a8f3dc304054cb31c 100755
--- a/services/etc/init.without_two_stages.cfg
+++ b/services/etc/init.without_two_stages.cfg
@@ -282,8 +282,8 @@
             "name" : "watchdog_service",
             "path" : ["/system/bin/watchdog_service", "10", "2"],
             "disabled" : 1,
-            "uid" : "root",
-            "gid" : ["shell", "log", "readproc"],
+            "uid" : "watchdog",
+            "gid" : ["watchdog", "log", "readproc"],
             "start-mode" : "condition"
         }, {
             "name" : "misc",
diff --git a/services/etc/passwd b/services/etc/passwd
index 686efb90b8070393bdb953e517c8c8c72694e281..7a66e5a93d21675fecfb4d9aeb6ce7ffc4db7667 100644
--- a/services/etc/passwd
+++ b/services/etc/passwd
@@ -96,4 +96,8 @@ pasteboard:x:3816:3816:::/bin/false
 wallpaper:x:3817:3817:::/bin/false
 screenlock:x:3818:3818:::/bin/false
 time:x:3819:3819:::/bin/false
-inputmethod:x:3820:3820:::/bin/false
\ No newline at end of file
+inputmethod:x:3820:3820:::/bin/false
+watchdog:x:1100:1100:::/bin/false
+paramwatcher:x:1101:1101:::/bin/false
+deviceinfo:x:1102:1102:::/bin/false
+accessibility:x:1103:1103:::/bin/false
diff --git a/services/etc/watchdog.cfg b/services/etc/watchdog.cfg
index 8b975e002879309e030b51e1d4833979e825f97e..9117ed5a5e3778834aad34a5cbe776dee6659664 100644
--- a/services/etc/watchdog.cfg
+++ b/services/etc/watchdog.cfg
@@ -5,8 +5,8 @@
             "path" : ["/system/bin/watchdog_service", "10", "2"],
             "disabled" : 1,
             "sandbox" : 0,
-            "uid" : "root",
-            "gid" : ["shell", "log", "readproc"],
+            "uid" : "watchdog",
+            "gid" : ["watchdog", "log", "readproc"],
             "secon" : "u:r:watchdog_service:s0"
         }
     ]
diff --git a/services/param/watcher/etc/param_watcher.cfg b/services/param/watcher/etc/param_watcher.cfg
index 93a6858341a8c03393b9c9a214d6e301dc03a012..d588f10e8537312655654daf8428529ab692abba 100755
--- a/services/param/watcher/etc/param_watcher.cfg
+++ b/services/param/watcher/etc/param_watcher.cfg
@@ -2,9 +2,9 @@
     "services" : [{
             "name" : "param_watcher",
             "path" : ["/system/bin/sa_main", "/system/profile/param_watcher.xml"],
-            "uid" : "system",
+            "uid" : "paramwatcher",
             "start-mode" : "boot",
-            "gid" : ["system", "shell"],
+            "gid" : ["paramwatcher", "shell"],
             "secon" : "u:r:param_watcher:s0"
         }
     ]
diff --git a/ueventd/etc/ueventd.config b/ueventd/etc/ueventd.config
index e520cdc1cc1b394ed9b8f5a97aec4634aed21eca..d5347a4f9c2c5f4f72baa4635f24875dd8c0d247 100755
--- a/ueventd/etc/ueventd.config
+++ b/ueventd/etc/ueventd.config
@@ -71,3 +71,4 @@
 /dev/uinput 0660 3011 3011
 /dev/access_token_id 0666 3020 3020
 /dev/block/sdd19 0660 6666 6666
+/dev/watchdog 0660  watchdog watchdog