From 18883a93b795da6409beeddf2c6ce34ce8234cb0 Mon Sep 17 00:00:00 2001
From: Roshan Pius <rpius@google.com>
Date: Thu, 30 Jun 2016 08:20:29 -0700
Subject: [PATCH] sepolicy: Add permissions for wpa_supplicant binder
Add the necessary permissions for |wpa_supplicant| to expose a binder
interface. This binder interface will be used by the newly added
|wificond| service (and potentially system_server).
|wpa_supplicant| also needs to invoke binder callbacks on |wificond|.
Changes in the CL:
1. Allow |wpa_supplicant| to register binder service.
2. Allow |wpa_supplicant| to invoke binder calls on |wificond|.
3. Allow |wificond| to invoke binder calls on |wpa_supplicant|
Denials:
06-30 08:14:42.788 400 400 E SELinux : avc: denied { add } for
service=wpa_supplicant pid=20756 uid=1010 scontext=u:r:wpa:s0
tcontext=u:object_r:default_android_service:s0 tclass=service_manager
permissive=1
BUG:29877467
TEST: Compiled and ensured that the selinux denials are no longer
present in logs.
TEST: Ran integration test to find the service.
Change-Id: Ib78d8e820fc81b2c3d9260e1c877c5faa9f1f662
---
service.te | 1 +
service_contexts | 1 +
wificond.te | 1 +
wpa.te | 3 +++
4 files changed, 6 insertions(+)
diff --git a/service.te b/service.te
index c891ca8e0..d72d6552a 100644
--- a/service.te
+++ b/service.te
@@ -120,3 +120,4 @@ type wifiscanner_service, system_api_service, system_server_service, service_man
type wifi_service, app_api_service, system_server_service, service_manager_type;
type wificond_service, system_server_service, service_manager_type;
type window_service, system_api_service, system_server_service, service_manager_type;
+type wpa_supplicant_service, system_server_service, service_manager_type;
diff --git a/service_contexts b/service_contexts
index 218cb8f9f..2b7a1b113 100644
--- a/service_contexts
+++ b/service_contexts
@@ -145,4 +145,5 @@ wifiscanner u:object_r:wifiscanner_service:s0
wifi u:object_r:wifi_service:s0
wificond u:object_r:wificond_service:s0
window u:object_r:window_service:s0
+wpa u:object_r:wpa_supplicant_service:s0
* u:object_r:default_android_service:s0
diff --git a/wificond.te b/wificond.te
index edc82e0d5..0da5f380b 100644
--- a/wificond.te
+++ b/wificond.te
@@ -6,5 +6,6 @@ init_daemon_domain(wificond)
binder_use(wificond)
binder_call(wificond, system_server)
+binder_call(wificond, wpa)
allow wificond wificond_service:service_manager { add find };
diff --git a/wpa.te b/wpa.te
index dddc801e0..dfb73dc2e 100644
--- a/wpa.te
+++ b/wpa.te
@@ -23,7 +23,10 @@ allow wpa wifi_data_file:dir create_dir_perms;
allow wpa wifi_data_file:file create_file_perms;
unix_socket_send(wpa, system_wpa, system_server)
+# Binder interface exposed by WPA.
binder_use(wpa)
+binder_call(wpa, wificond)
+allow wpa wpa_supplicant_service:service_manager { add find };
# Create a socket for receiving info from wpa
type_transition wpa wifi_data_file:dir wpa_socket "sockets";
--
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