add selinux policy for GNSS hal
The following are the avc denials that are addressed:
avc: denied { call } for pid=889 comm="system_server"
scontext=u:r:system_server:s0 tcontext=u:r:hal_gnss_default:s0
tclass=binder permissive=0
avc: denied { call } for scontext=u:r:hal_gnss_default:s0
tcontext=u:r:system_server:s0 tclass=binder permissive=0
avc: denied { read } for name="hw" dev="mmcblk0p43" ino=1837
scontext=u:r:hal_gnss_default:s0 tcontext=u:object_r:system_file:s0
tclass=dir permissive=0
avc: denied { open } for path="/system/lib64/hw" dev="mmcblk0p43"
ino=1837 scontext=u:r:hal_gnss_default:s0
tcontext=u:object_r:system_file:s0 tclass=dir permissive=0
Bug:31974439
Test: Checked that there no more related avc denial messages related to
the GNSS HAL in dmesg.
Change-Id: I5b43dc088017a5568dd8e442726d2bf52e95b1d5
diff --git a/private/file_contexts b/private/file_contexts
index 4d35a17..8767312 100644
--- a/private/file_contexts
+++ b/private/file_contexts
@@ -240,6 +240,7 @@
/system/bin/hw/android\.hardware\.contexthub@1\.0-service u:object_r:hal_contexthub_default_exec:s0
/system/bin/hw/android\.hardware\.dumpstate@1\.0-service u:object_r:hal_dumpstate_default_exec:s0
/system/bin/hw/android\.hardware\.gatekeeper@1\.0-service u:object_r:hal_gatekeeper_default_exec:s0
+/system/bin/hw/android\.hardware\.gnss@1\.0-service u:object_r:hal_gnss_default_exec:s0
/system/bin/hw/android\.hardware\.graphics\.allocator@2\.0-service u:object_r:hal_graphics_allocator_default_exec:s0
/system/bin/hw/android\.hardware\.graphics\.composer@2\.1-service u:object_r:hal_graphics_composer_default_exec:s0
/system/bin/hw/android\.hardware\.health@1\.0-service u:object_r:hal_health_default_exec:s0
diff --git a/private/hal_gnss_default.te b/private/hal_gnss_default.te
new file mode 100644
index 0000000..29ff994
--- /dev/null
+++ b/private/hal_gnss_default.te
@@ -0,0 +1,9 @@
+type hal_gnss_default, hal_gnss, domain;
+type hal_gnss_default_exec, exec_type, file_type;
+
+init_daemon_domain(hal_gnss_default)
+
+# Read access to system files for HALs in
+# /{system,vendor,odm}/lib[64]/hw/ in order
+# to be able to open the hal implementation .so files
+r_dir_file(hal_gnss, system_file)