1 files changed, 87 insertions, 0 deletions
diff --git a/libs/usvfs/src/usvfs_dll/hookcallcontext.h b/libs/usvfs/src/usvfs_dll/hookcallcontext.h
new file mode 100644
index 0000000..ebb3bf9
--- /dev/null
+++ b/libs/usvfs/src/usvfs_dll/hookcallcontext.h
@@ -0,0 +1,87 @@
+/*
+Userspace Virtual Filesystem
+
+Copyright (C) 2015 Sebastian Herbord. All rights reserved.
+
+This file is part of usvfs.
+
+usvfs is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+usvfs is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with usvfs. If not, see <http://www.gnu.org/licenses/>.
+*/
+#pragma once
+
+namespace usvfs
+{
+
+/**
+ * @brief groups of hooks which may be used to implement each other, so only the first
+ * call should be to one should be manipulated
+ */
+enum class MutExHookGroup : int
+{
+  ALL_GROUPS = 0,  // An ALL_GROUPS-hook prevents all other hooks from becoming active
+                   // BUT hooks from other groups don't prevent the ALL_GROUPS-hook from
+                   // becoming activated
+  OPEN_FILE         = 1,
+  CREATE_PROCESS    = 2,
+  FILE_ATTRIBUTES   = 3,
+  FIND_FILES        = 4,
+  LOAD_LIBRARY      = 5,
+  FULL_PATHNAME     = 6,
+  SHELL_FILEOP      = 7,
+  DELETE_FILE       = 8,
+  GET_FILE_VERSION  = 9,
+  GET_MODULE_HANDLE = 10,
+  SEARCH_FILES      = 11,
+
+  NO_GROUP = 12,
+  LAST     = NO_GROUP,
+};
+
+class HookCallContext
+{
+
+public:
+  HookCallContext();
+  HookCallContext(MutExHookGroup group);
+  ~HookCallContext();
+
+  HookCallContext(const HookCallContext& reference)            = delete;
+  HookCallContext& operator=(const HookCallContext& reference) = delete;
+
+  void restoreLastError();
+
+  void updateLastError(DWORD lastError = GetLastError());
+
+  DWORD lastError() const { return m_LastError; }
+
+  bool active() const;
+
+private:
+  DWORD m_LastError;
+  bool m_Active;
+  MutExHookGroup m_Group;
+};
+
+class FunctionGroupLock
+{
+public:
+  FunctionGroupLock(MutExHookGroup group);
+  ~FunctionGroupLock();
+
+private:
+  MutExHookGroup m_Group;
+  bool m_Active;
+};
+
+}  // namespace usvfs