Allow system_server to send signull to appdomain
In order to check the process existence by using kill(pid, 0)
Bug: 141857656
Test: manual
Change-Id: I7b9f3e5294449a521ef92b2054b4409afbf4306b
diff --git a/private/system_server.te b/private/system_server.te
index 4778daa..89a185d 100644
--- a/private/system_server.te
+++ b/private/system_server.te
@@ -110,6 +110,8 @@
# Kill apps.
allow system_server appdomain:process { getpgid sigkill signal };
+# signull allowed for kill(pid, 0) existence test.
+allow system_server appdomain:process { signull };
# Set scheduling info for apps.
allow system_server appdomain:process { getsched setsched };