nfs4: Do not ignore idmapper initialization errors

src/add-ons/kernel/file_systems/nfs4/IdMap.cpp

@@ -23,7 +23,7 @@ mutex	gIdMapperLock;
 IdMap::IdMap()
 {
 	mutex_init(&fLock, NULL);
-	_Repair();
+	fInitStatus = _Repair();
 }
 
 

src/add-ons/kernel/file_systems/nfs4/IdMap.h

@@ -16,30 +16,41 @@
 
 class IdMap {
 public:
-					IdMap();
-					~IdMap();
+						IdMap();
+						~IdMap();
 
-		uid_t		GetUserId(const char* owner);
-		gid_t		GetGroupId(const char* ownerGroup);
+			uid_t		GetUserId(const char* owner);
+			gid_t		GetGroupId(const char* ownerGroup);
 
-		char*		GetOwner(uid_t user);
-		char*		GetOwnerGroup(gid_t group);
+			char*		GetOwner(uid_t user);
+			char*		GetOwnerGroup(gid_t group);
+
+	inline	status_t	InitStatus();
 
 private:
-		status_t	_Repair();
+			status_t	_Repair();
 
-		template<typename T>
-		void*		_GetBuffer(T value, int32 code);
+			template<typename T>
+			void*		_GetBuffer(T value, int32 code);
 
-		template<typename T>
-		T			_GetValue(const char* buffer, int32 code);
+			template<typename T>
+			T			_GetValue(const char* buffer, int32 code);
 
-		mutex		fLock;
+			status_t	fInitStatus;
 
-		port_id		fRequestPort;
-		port_id		fReplyPort;
+			mutex		fLock;
+
+			port_id		fRequestPort;
+			port_id		fReplyPort;
 };
 
+
+inline status_t
+IdMap::InitStatus()
+{
+	return fInitStatus;
+}
+
 extern IdMap*	gIdMapper;
 extern mutex	gIdMapperLock;
 

src/add-ons/kernel/file_systems/nfs4/kernel_interface.cpp

@@ -124,10 +124,18 @@ nfs4_mount(fs_volume* volume, const char* device, uint32 flags,
 {
 	status_t result;
 
+	/* prepare idmapper server */
 	MutexLocker locker(gIdMapperLock);
 	gIdMapper = new(std::nothrow) IdMap;
 	if (gIdMapper == NULL)
 		return B_NO_MEMORY;
+
+	result = gIdMapper->InitStatus();
+	if (result != B_OK) {
+		delete gIdMapper;
+		gIdMapper = NULL;
+		return result;
+	}
 	locker.Unlock();
 
 	PeerAddress address;