Merge cherrypicks of [13231586, 13231437, 13231588, 13230397, 13230399, 13231350, 13231351, 13231354, 13231356, 13231439, 13231441, 13231358, 13231443, 13231360, 13231030, 13231457, 13230243, 13231032, 13231725, 13230838, 13231034, 13230840, 13230842, 13231361, 13231363, 13231745, 13231458, 13231747, 13231749, 13231751, 13229580, 13229582, 13231589, 13231591, 13231764, 13230400, 13230402, 13231784, 13231786, 13231788, 13231790] into rvc-qpr1-release

Change-Id: If8057b78b7d0f24934ecb29f169fe37240ca851d
diff --git a/storaged/include/storaged.h b/storaged/include/storaged.h
index 6f92048..79b5d41 100644
--- a/storaged/include/storaged.h
+++ b/storaged/include/storaged.h
@@ -86,6 +86,7 @@
     sp<android::hardware::health::V2_0::IHealth> health;
     unique_ptr<storage_info_t> storage_info;
     static const uint32_t current_version;
+    Mutex proto_lock;
     unordered_map<userid_t, bool> proto_loaded;
     void load_proto(userid_t user_id);
     char* prepare_proto(userid_t user_id, StoragedProto* proto);
diff --git a/storaged/storaged.cpp b/storaged/storaged.cpp
index 573b8c5..b7aa89f 100644
--- a/storaged/storaged.cpp
+++ b/storaged/storaged.cpp
@@ -162,6 +162,8 @@
 }
 
 void storaged_t::add_user_ce(userid_t user_id) {
+    Mutex::Autolock _l(proto_lock);
+
     if (!proto_loaded[user_id]) {
         load_proto(user_id);
         proto_loaded[user_id] = true;
@@ -169,6 +171,8 @@
 }
 
 void storaged_t::remove_user_ce(userid_t user_id) {
+    Mutex::Autolock _l(proto_lock);
+
     proto_loaded[user_id] = false;
     mUidm.clear_user_history(user_id);
     RemoveFileIfExists(proto_path(user_id), nullptr);
@@ -298,6 +302,8 @@
 }
 
 void storaged_t::flush_protos(unordered_map<int, StoragedProto>* protos) {
+    Mutex::Autolock _l(proto_lock);
+
     for (auto& it : *protos) {
         /*
          * Don't flush proto if we haven't attempted to load it from file.