[power-udev] do not start i/o when dumping metadata

When provider is loaded under qemu, there is exception on provider loading
because netlink is not supported

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jolla.com>

rpm/statefs-providers.spec

@@ -8,7 +8,7 @@
 %define maemo_ver1 0.7.31
 %define meego_ver 0.1.0
 %define meego_ver1 0.1.0.1
-%define statefs_ver 0.3.28
+%define statefs_ver 0.3.28.1
 
 Summary: Statefs providers
 Name: statefs-providers

rpm/statefs-providers.spec.tpl

@@ -8,7 +8,7 @@
 %define maemo_ver1 0.7.31
 %define meego_ver 0.1.0
 %define meego_ver1 0.1.0.1
-%define statefs_ver 0.3.28
+%define statefs_ver 0.3.28.1
 
 Summary: Statefs providers
 Name: statefs-providers

src/power_udev/provider_power_udev.cpp

@@ -684,7 +684,8 @@ class Provider : public statefs::AProvider
     Provider(statefs_server *server)
         : AProvider("udev", server)
     {
-        auto ns = std::make_shared<BatteryNs>();
+        auto ns = std::make_shared<BatteryNs>
+            (server ? server->mode : statefs_provider_mode_run);
         insert(std::static_pointer_cast<statefs::ANode>(ns));
     }
     virtual ~Provider() {}
@@ -887,9 +888,9 @@ void BatteryInfo::on_charging_changed(ChargingState)
     denergy_.clear();
 }
 
-BatteryNs::BatteryNs()
+BatteryNs::BatteryNs(statefs_provider_mode mode)
     : Namespace("Battery")
-    , mon_(new Monitor(io_, this))
+    , mon_(mode == statefs_provider_mode_run ? new Monitor(io_, this) : nullptr)
     , analog_info_{{
         // BatteryNs::Prop::Temperature, mon_->temperature_source()
             }}
@@ -916,8 +917,10 @@ BatteryNs::BatteryNs()
             *this << prop;
         }
     }
-    mon_->run();
-    monitor_thread_ = cor::make_unique<std::thread>([this]() { io_.run(); });
+    if (mon_) {
+        mon_->run();
+        monitor_thread_ = cor::make_unique<std::thread>([this]() { io_.run(); });
+    }
 }
 
 void BatteryNs::set(Prop id, std::string const &v)