Allow Bluetooth sys_nice and system_server setsched for Bluetooth HAL
Bluetooth needs the capability to set audio-related threads to be RT
scheduled. Grant it sys_nice.
system_server needs to set priority for the Bluetooth HAL. Allow it.
Bug 37518404
Test: Play Bluetooth audio, confirm RT scheduling with systrace
Merged-In: Iaf7b85a11a51883744d72a50addfd320b6fbbc2f
Change-Id: Iaf7b85a11a51883744d72a50addfd320b6fbbc2f
(cherry picked from commit 6eee6eb2c06ea812d43d8d617d10f3ef009a1a57)
diff --git a/private/bluetooth.te b/private/bluetooth.te
index da05cc2..1c0e14f 100644
--- a/private/bluetooth.te
+++ b/private/bluetooth.te
@@ -57,6 +57,9 @@
# /data/data/com.android.shell/files/bugreports/bugreport-*.
allow bluetooth shell_data_file:file read;
+# Bluetooth audio needs RT scheduling to meet deadlines, allow sys_nice
+allow bluetooth self:capability sys_nice;
+
hal_client_domain(bluetooth, hal_bluetooth)
hal_client_domain(bluetooth, hal_telephony)
@@ -69,6 +72,6 @@
###
# Superuser capabilities.
-# bluetooth requires net_{admin,raw,bind_service} and wake_alarm and block_suspend.
-neverallow bluetooth self:capability ~{ net_admin net_raw net_bind_service };
+# Bluetooth requires net_{admin,raw,bind_service} and wake_alarm and block_suspend and sys_nice.
+neverallow bluetooth self:capability ~{ net_admin net_raw net_bind_service sys_nice};
neverallow bluetooth self:capability2 ~{ wake_alarm block_suspend };
diff --git a/private/system_server.te b/private/system_server.te
index afca1f6..c4d17ef 100644
--- a/private/system_server.te
+++ b/private/system_server.te
@@ -98,6 +98,7 @@
allow system_server appdomain:process { getsched setsched };
allow system_server audioserver:process { getsched setsched };
allow system_server hal_audio:process { getsched setsched };
+allow system_server hal_bluetooth:process { getsched setsched };
allow system_server cameraserver:process { getsched setsched };
allow system_server hal_camera:process { getsched setsched };
allow system_server mediaserver:process { getsched setsched };