1 files changed, 98 insertions, 0 deletions

diff --git a/src/burn/engine/netfxchainer.h b/src/burn/engine/netfxchainer.h
new file mode 100644
index 00000000..7d3aff1c
--- /dev/null
+++ b/src/burn/engine/netfxchainer.h
@@ -0,0 +1,98 @@
+#pragma once
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+struct NetFxDataStructure
+{
+    bool downloadFinished;               // download done yet?
+    bool installFinished;                // install done yet?
+    bool downloadAbort;                  // set downloader to abort
+    bool installAbort;                   // set installer to abort
+    HRESULT hrDownloadFinished;          // resultant HRESULT for download
+    HRESULT hrInstallFinished;           // resultant HRESULT for install
+    HRESULT hrInternalError;
+    WCHAR szCurrentItemStep[MAX_PATH];
+    BYTE downloadSoFar;         // download progress 0 - 255 (0 to 100% done) 
+    BYTE installSoFar;          // install progress 0 - 255 (0 to 100% done)
+    WCHAR szEventName[MAX_PATH];         // event that chainer 'creates' and chainee 'opens'to sync communications
+
+    BYTE version;                        // version of the data structure, set by chainer.
+
+    DWORD messageCode;                   // current message being sent by the chainee, 0 if no message is active
+    DWORD messageResponse;               // chainer's response to current message, 0 if not yet handled
+    DWORD messageDataLength;             // length of the m_messageData field in bytes
+    BYTE messageData[1];                 // variable length buffer, content depends on m_messageCode
+};
+
+struct NetFxChainer
+{
+    HANDLE hSection;
+
+    HANDLE hEventChaineeSend;
+    HANDLE hEventChainerSend;
+    HANDLE hMutex;
+
+    NetFxDataStructure* pData;
+    DWORD dwDataSize;
+};
+
+#define NETFXDATA_SIZE           65536
+
+#define NETFXDATA_VERSION        1
+
+#define NETFX_MESSAGE(version, defaultResponse, messageCode) \
+    ((((DWORD)version & 0xFF) << 24) | (((DWORD)defaultResponse & 0xFF) << 16) | ((DWORD)messageCode & 0xFFFF))
+#define NETFX_MESSAGE_CODE(messageId) \
+    (messageId & 0xFFFF)
+#define NETFX_MESSAGE_DEFAULT_RESPONSE(messageId) \
+    ((messageId >> 16) & 0xFF)
+#define NETFX_MESSAGE_VERSION(messageId) \
+    ((messageId >>24) & 0xFF)
+
+#define NETFX_NO_MESSAGE    0
+
+
+//------------------------------------------------------------------------------
+// NETFX_CLOSE_APPS
+//
+// Sent by the chainee when it detects that applications are holding files in 
+// use.  Respond to this message in order to tell the chainee to close the 
+// applications to prevent a reboot.
+//
+// pData : NetFxCloseApplications : The list of applications
+// Acceptable responses:
+//   IDYES   : Indicates that the chainee should attempt to shutdown the apps.
+//             If all apps do not successfully close the message may be sent again.
+//   IDNO    : Indicates that the chainee should not attempt to close apps.
+//   IDRETRY : Indicates that the chainee should refresh the list of apps.
+//             Another NETFX_CLOSE_APPS message will be sent asynchronously with
+//             the new list of apps.
+//------------------------------------------------------------------------------
+#define NETFX_CLOSE_APPS    NETFX_MESSAGE(NETFXDATA_VERSION, IDNO, 1)
+
+struct NetFxApplication
+{
+    WCHAR szName[MAX_PATH];
+    DWORD dwPid;
+};
+
+struct NetFxCloseApplications
+{
+    DWORD dwApplicationsSize;
+    NetFxApplication applications[1];
+};
+
+HRESULT NetFxRunChainer(
+    __in LPCWSTR wzExecutablePath,
+    __in LPCWSTR wzArguments,
+    __in PFN_GENERICMESSAGEHANDLER pfnGenericMessageHandler,
+    __in LPVOID pvContext,
+    __out DWORD* pdwExitCode
+    );
+#if defined(__cplusplus)
+}
+#endif