Add hal_dumpstate attribute.

- Also allow dumpstate to talk to hal_dumpstate.

Bug: 31982882
Test: compiles
Change-Id: Ib9cf0027ee7e71fa40b9ccc29fc8dccea6977e5c

private/file_contexts

@@ -231,6 +231,7 @@
 /system/lib(64)?/libart.*        u:object_r:libart_file:s0
 /system/bin/hw/android\.hardware\.audio@2\.0-service          u:object_r:hal_audio_default_exec:s0
 /system/bin/hw/android\.hardware\.boot@1\.0-service           u:object_r:hal_boot_exec:s0
+/system/bin/hw/android\.hardware\.dumpstate@1\.0-service      u:object_r:hal_dumpstate_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_exec:s0

private/hal_dumpstate_default.te

+type hal_dumpstate_default, hal_dumpstate, domain;
+type hal_dumpstate_default_exec, exec_type, file_type;
+
+init_daemon_domain(hal_dumpstate_default)

public/attributes

@@ -116,6 +116,7 @@ attribute update_engine_common;
 
 # HALs
 attribute hal_audio;
+attribute hal_dumpstate;
 attribute hal_graphics_allocator;
 attribute hal_graphics_composer;
 attribute hal_ir;

public/dumpstate.te

@@ -99,6 +99,7 @@ binder_call(dumpstate, { appdomain ephemeral_app netd wificond })
 
 # Vibrate the device after we are done collecting the bugreport
 # For binderized mode:
+binder_call(dumpstate, hal_dumpstate)
 binder_call(dumpstate, hal_vibrator)
 binder_call(dumpstate, hwservicemanager)
 # For passthrough mode:

public/hal_dumpstate.te

+# hwbinder access
+hwbinder_use(hal_dumpstate)
+
+# call into dumpstate process (callbacks)
+binder_call(hal_dumpstate, dumpstate)