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-rw-r--r--setup_native/Library_inst_msu_msi.mk40
-rw-r--r--setup_native/Module_setup_native.mk1
-rw-r--r--setup_native/source/win32/customactions/inst_msu/inst_msu.cxx515
-rw-r--r--setup_native/source/win32/customactions/inst_msu/inst_msu_msi.def5
4 files changed, 561 insertions, 0 deletions
diff --git a/setup_native/Library_inst_msu_msi.mk b/setup_native/Library_inst_msu_msi.mk
new file mode 100644
index 000000000000..d423b5168697
--- /dev/null
+++ b/setup_native/Library_inst_msu_msi.mk
@@ -0,0 +1,40 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+$(eval $(call gb_Library_Library,inst_msu_msi))
+
+$(eval $(call gb_Library_add_defs,inst_msu_msi,\
+ -U_DLL \
+))
+
+$(eval $(call gb_Library_add_cxxflags,inst_msu_msi,\
+ $(if $(MSVC_USE_DEBUG_RUNTIME),/MTd,/MT) \
+))
+
+$(eval $(call gb_Library_add_ldflags,inst_msu_msi,\
+ /DEF:$(SRCDIR)/setup_native/source/win32/customactions/inst_msu/inst_msu_msi.def \
+ /NODEFAULTLIB \
+))
+
+$(eval $(call gb_Library_add_exception_objects,inst_msu_msi,\
+ setup_native/source/win32/customactions/inst_msu/inst_msu \
+))
+
+$(eval $(call gb_Library_use_system_win32_libs,inst_msu_msi,\
+ libcmt \
+ libcpmt \
+ libucrt \
+ libvcruntime \
+ kernel32 \
+ Ole32 \
+ Shell32 \
+ Msi \
+))
+
+# vim: set noet sw=4 ts=4:
diff --git a/setup_native/Module_setup_native.mk b/setup_native/Module_setup_native.mk
index 8e11f4d61425..1009c53dcb2d 100644
--- a/setup_native/Module_setup_native.mk
+++ b/setup_native/Module_setup_native.mk
@@ -23,6 +23,7 @@ $(eval $(call gb_Module_add_targets,setup_native,\
ifeq ($(OS),WNT)
$(eval $(call gb_Module_add_targets,setup_native,\
Library_instooofiltmsi \
+ Library_inst_msu_msi \
Library_qslnkmsi \
Library_reg4allmsdoc \
Library_regactivex \
diff --git a/setup_native/source/win32/customactions/inst_msu/inst_msu.cxx b/setup_native/source/win32/customactions/inst_msu/inst_msu.cxx
new file mode 100644
index 000000000000..b03d3cf3791c
--- /dev/null
+++ b/setup_native/source/win32/customactions/inst_msu/inst_msu.cxx
@@ -0,0 +1,515 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <memory>
+#include <string>
+#include <sstream>
+#include <iomanip>
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <Shlobj.h>
+#include <Wuerror.h>
+#include <msiquery.h>
+
+namespace
+{
+template <typename IntType> std::string Num2Hex(IntType n)
+{
+ std::stringstream sMsg;
+ sMsg << "0x" << std::uppercase << std::setfill('0') << std::setw(sizeof(n) * 2) << std::hex
+ << n;
+ return sMsg.str();
+}
+
+template <typename IntType> std::string Num2Dec(IntType n)
+{
+ std::stringstream sMsg;
+ sMsg << n;
+ return sMsg.str();
+}
+
+void ThrowHResult(const char* sFunc, HRESULT hr)
+{
+ std::stringstream sMsg;
+ sMsg << sFunc << " failed (HRESULT = " << Num2Hex(hr) << ")!";
+
+ throw std::exception(sMsg.str().c_str());
+}
+
+void CheckHResult(const char* sFunc, HRESULT hr)
+{
+ if (FAILED(hr))
+ ThrowHResult(sFunc, hr);
+}
+
+void ThrowWin32Error(const char* sFunc, DWORD nWin32Error)
+{
+ std::stringstream sMsg;
+ sMsg << sFunc << " failed with Win32 error code " << Num2Hex(nWin32Error) << "!";
+
+ throw std::exception(sMsg.str().c_str());
+}
+
+void ThrowLastError(const char* sFunc) { ThrowWin32Error(sFunc, GetLastError()); }
+
+void CheckWin32Error(const char* sFunc, DWORD nWin32Error)
+{
+ if (nWin32Error != ERROR_SUCCESS)
+ ThrowWin32Error(sFunc, nWin32Error);
+}
+
+std::wstring GetKnownFolder(const KNOWNFOLDERID& rfid)
+{
+ PWSTR sPath = nullptr;
+ HRESULT hr = SHGetKnownFolderPath(rfid, KF_FLAG_DEFAULT, nullptr, &sPath);
+ CheckHResult("SHGetKnownFolderPath", hr);
+ std::wstring sResult(sPath);
+ CoTaskMemFree(sPath);
+ return sResult;
+}
+
+void WriteLogElem(MSIHANDLE hInst, MSIHANDLE hRecord, std::ostringstream& sTmpl, UINT)
+{
+ MsiRecordSetStringA(hRecord, 0, sTmpl.str().c_str());
+ MsiProcessMessage(hInst, INSTALLMESSAGE_INFO, hRecord);
+}
+
+void RecSetString(MSIHANDLE hRec, UINT nField, LPCSTR sVal)
+{
+ MsiRecordSetStringA(hRec, nField, sVal);
+}
+
+void RecSetString(MSIHANDLE hRec, UINT nField, LPCWSTR sVal)
+{
+ MsiRecordSetStringW(hRec, nField, sVal);
+}
+
+template <class Ch, class... SOther>
+void WriteLogElem(MSIHANDLE hInst, MSIHANDLE hRec, std::ostringstream& sTmpl, UINT nField,
+ const Ch* elem, const SOther&... others)
+{
+ sTmpl << " [" << nField << "]";
+ RecSetString(hRec, nField, elem);
+ WriteLogElem(hInst, hRec, sTmpl, nField + 1, others...);
+}
+
+template <class S1, class... SOther>
+void WriteLogElem(MSIHANDLE hInst, MSIHANDLE hRec, std::ostringstream& sTmpl, UINT nField,
+ const S1& elem, const SOther&... others)
+{
+ WriteLogElem(hInst, hRec, sTmpl, nField, elem.c_str(), others...);
+}
+
+static std::string sLogPrefix;
+
+template <class... StrType> void WriteLog(MSIHANDLE hInst, const StrType&... elements)
+{
+ PMSIHANDLE hRec = MsiCreateRecord(sizeof...(elements));
+ if (!hRec)
+ return;
+
+ std::ostringstream sTemplate;
+ sTemplate << sLogPrefix;
+ WriteLogElem(hInst, hRec, sTemplate, 1, elements...);
+}
+
+typedef std::unique_ptr<void, decltype(&CloseHandle)> CloseHandleGuard;
+CloseHandleGuard Guard(HANDLE h) { return CloseHandleGuard(h, CloseHandle); }
+
+typedef std::unique_ptr<const wchar_t, decltype(&DeleteFileW)> DeleteFileGuard;
+DeleteFileGuard Guard(const wchar_t* sFileName) { return DeleteFileGuard(sFileName, DeleteFileW); }
+
+typedef std::unique_ptr<SC_HANDLE__, decltype(&CloseServiceHandle)> CloseServiceHandleGuard;
+CloseServiceHandleGuard Guard(SC_HANDLE h)
+{
+ return CloseServiceHandleGuard(h, CloseServiceHandle);
+}
+
+std::wstring GetTempFile()
+{
+ wchar_t sPath[MAX_PATH + 1];
+ DWORD nResult = GetTempPathW(sizeof(sPath) / sizeof(*sPath), sPath);
+ if (!nResult)
+ ThrowLastError("GetTempPathW");
+
+ wchar_t sFile[MAX_PATH + 1];
+ nResult = GetTempFileNameW(sPath, L"TMP", 0, sFile);
+ if (!nResult)
+ ThrowLastError("GetTempFileNameW");
+ return sFile;
+}
+
+bool IsWow64Process()
+{
+#if !defined _WIN64
+ BOOL bResult = FALSE;
+ typedef BOOL(WINAPI * LPFN_ISWOW64PROCESS)(HANDLE, PBOOL);
+ LPFN_ISWOW64PROCESS fnIsWow64Process = reinterpret_cast<LPFN_ISWOW64PROCESS>(
+ GetProcAddress(GetModuleHandleW(L"kernel32"), "IsWow64Process"));
+
+ if (fnIsWow64Process)
+ {
+ if (!fnIsWow64Process(GetCurrentProcess(), &bResult))
+ ThrowLastError("IsWow64Process");
+ }
+
+ return bResult;
+#else
+ return false;
+#endif
+}
+
+// Checks if Windows Update service is disabled, and if it is, enables it temporarily.
+class WUServiceEnabler
+{
+public:
+ WUServiceEnabler(MSIHANDLE hInstall)
+ : mhInstall(hInstall)
+ , mhService(EnableWUService(hInstall))
+ {
+ }
+
+ ~WUServiceEnabler()
+ {
+ try
+ {
+ if (mhService)
+ {
+ EnsureServiceEnabled(mhInstall, mhService.get(), false);
+ StopService(mhInstall, mhService.get());
+ }
+ }
+ catch (std::exception& e)
+ {
+ WriteLog(mhInstall, e.what());
+ }
+ }
+
+private:
+ static CloseServiceHandleGuard EnableWUService(MSIHANDLE hInstall)
+ {
+ auto hSCM = Guard(OpenSCManagerW(nullptr, nullptr, SC_MANAGER_ALL_ACCESS));
+ if (!hSCM)
+ ThrowLastError("OpenSCManagerW");
+ WriteLog(hInstall, "Opened service control manager");
+
+ auto hService = Guard(OpenServiceW(hSCM.get(), L"wuauserv",
+ SERVICE_QUERY_CONFIG | SERVICE_CHANGE_CONFIG
+ | SERVICE_QUERY_STATUS | SERVICE_STOP));
+ if (!hService)
+ ThrowLastError("OpenServiceW");
+ WriteLog(hInstall, "Obtained WU service handle");
+
+ if (ServiceStatus(hInstall, hService.get()) == SERVICE_RUNNING
+ || !EnsureServiceEnabled(hInstall, hService.get(), true))
+ {
+ // No need to restore anything back, since we didn't change config
+ hService.reset();
+ WriteLog(hInstall, "Service configuration is unchanged");
+ }
+
+ return hService;
+ }
+
+ // Returns if the service configuration was actually changed
+ static bool EnsureServiceEnabled(MSIHANDLE hInstall, SC_HANDLE hService, bool bEnabled)
+ {
+ bool bConfigChanged = false;
+
+ DWORD nCbRequired = 0;
+ if (!QueryServiceConfigW(hService, nullptr, 0, &nCbRequired))
+ {
+ DWORD nError = GetLastError();
+ if (nError != ERROR_INSUFFICIENT_BUFFER)
+ ThrowLastError("QueryServiceConfigW");
+ }
+ std::unique_ptr<char[]> pBuf(new char[nCbRequired]);
+ LPQUERY_SERVICE_CONFIGW pConfig = reinterpret_cast<LPQUERY_SERVICE_CONFIGW>(pBuf.get());
+ if (!QueryServiceConfigW(hService, pConfig, nCbRequired, &nCbRequired))
+ ThrowLastError("QueryServiceConfigW");
+ WriteLog(hInstall, "Obtained service config");
+
+ DWORD eNewStartType = 0;
+ if (bEnabled && pConfig->dwStartType == SERVICE_DISABLED)
+ {
+ bConfigChanged = true;
+ eNewStartType = SERVICE_DEMAND_START;
+ WriteLog(hInstall, "Service is disabled, and requested to enable");
+ }
+ else if (!bEnabled && pConfig->dwStartType != SERVICE_DISABLED)
+ {
+ bConfigChanged = true;
+ eNewStartType = SERVICE_DISABLED;
+ WriteLog(hInstall, "Service is enabled, and requested to disable");
+ }
+
+ if (bConfigChanged)
+ {
+ if (!ChangeServiceConfigW(hService, SERVICE_NO_CHANGE, eNewStartType, SERVICE_NO_CHANGE,
+ nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
+ nullptr))
+ ThrowLastError("ChangeServiceConfigW");
+ WriteLog(hInstall, "WU service config successfully changed");
+ }
+ else
+ WriteLog(hInstall, "No need to modify service config");
+
+ return bConfigChanged;
+ }
+
+ static DWORD ServiceStatus(MSIHANDLE hInstall, SC_HANDLE hService)
+ {
+ SERVICE_STATUS aServiceStatus{};
+ if (!QueryServiceStatus(hService, &aServiceStatus))
+ ThrowLastError("QueryServiceStatus");
+
+ std::string sStatus;
+ switch (aServiceStatus.dwCurrentState)
+ {
+ case SERVICE_STOPPED:
+ sStatus = "SERVICE_STOPPED";
+ break;
+ case SERVICE_START_PENDING:
+ sStatus = "SERVICE_START_PENDING";
+ break;
+ case SERVICE_STOP_PENDING:
+ sStatus = "SERVICE_STOP_PENDING";
+ break;
+ case SERVICE_RUNNING:
+ sStatus = "SERVICE_RUNNING";
+ break;
+ case SERVICE_CONTINUE_PENDING:
+ sStatus = "SERVICE_CONTINUE_PENDING";
+ break;
+ case SERVICE_PAUSE_PENDING:
+ sStatus = "SERVICE_PAUSE_PENDING";
+ break;
+ case SERVICE_PAUSED:
+ sStatus = "SERVICE_PAUSED";
+ break;
+ default:
+ sStatus = Num2Hex(aServiceStatus.dwCurrentState);
+ }
+ WriteLog(hInstall, "Service status is", sStatus);
+
+ return aServiceStatus.dwCurrentState;
+ }
+
+ static void StopService(MSIHANDLE hInstall, SC_HANDLE hService)
+ {
+ if (ServiceStatus(hInstall, hService) != SERVICE_STOPPED)
+ {
+ SERVICE_STATUS aServiceStatus{};
+ if (!ControlService(hService, SERVICE_CONTROL_STOP, &aServiceStatus))
+ ThrowLastError("ControlService");
+ WriteLog(hInstall,
+ "Successfully sent SERVICE_CONTROL_STOP code to Windows Update service");
+ // No need to wait for the service stopped
+ }
+ else
+ WriteLog(hInstall, "Windows Update service is not running");
+ }
+
+ MSIHANDLE mhInstall;
+ CloseServiceHandleGuard mhService;
+};
+}
+
+// Immediate action "unpack_msu" that has access to installation database and properties; checks
+// "InstMSUBinary" property and unpacks the binary with that name to a temporary file; sets
+// "cleanup_msu" and "inst_msu" properties to the full name of the extracted temporary file. These
+// properties will become "CustomActionData" property inside relevant deferred actions.
+extern "C" UINT __stdcall UnpackMSUForInstall(MSIHANDLE hInstall)
+{
+ try
+ {
+ sLogPrefix = "UnpackMSUForInstall:";
+ WriteLog(hInstall, "started");
+
+ WriteLog(hInstall, "Checking value of InstMSUBinary");
+ wchar_t sBinaryName[MAX_PATH + 1];
+ DWORD nCCh = sizeof(sBinaryName) / sizeof(*sBinaryName);
+ CheckWin32Error("MsiGetPropertyW",
+ MsiGetPropertyW(hInstall, L"InstMSUBinary", sBinaryName, &nCCh));
+ WriteLog(hInstall, "Got InstMSUBinary value:", sBinaryName);
+
+ PMSIHANDLE hDatabase = MsiGetActiveDatabase(hInstall);
+ if (!hDatabase)
+ ThrowLastError("MsiGetActiveDatabase");
+ WriteLog(hInstall, "MsiGetActiveDatabase succeeded");
+
+ std::wstringstream sQuery;
+ sQuery << "SELECT `Data` FROM `Binary` WHERE `Name`='" << sBinaryName << "'";
+
+ PMSIHANDLE hBinaryView;
+ CheckWin32Error("MsiDatabaseOpenViewW",
+ MsiDatabaseOpenViewW(hDatabase, sQuery.str().c_str(), &hBinaryView));
+ WriteLog(hInstall, "MsiDatabaseOpenViewW succeeded");
+
+ CheckWin32Error("MsiViewExecute", MsiViewExecute(hBinaryView, 0));
+ WriteLog(hInstall, "MsiViewExecute succeeded");
+
+ PMSIHANDLE hBinaryRecord;
+ CheckWin32Error("MsiViewFetch", MsiViewFetch(hBinaryView, &hBinaryRecord));
+ WriteLog(hInstall, "MsiViewFetch succeeded");
+
+ const std::wstring sBinary = GetTempFile();
+ auto aDeleteFileGuard(Guard(sBinary.c_str()));
+ WriteLog(hInstall, "Temp file path:", sBinary.c_str());
+
+ CheckWin32Error("MsiSetPropertyW",
+ MsiSetPropertyW(hInstall, L"cleanup_msu", sBinary.c_str()));
+
+ {
+ HANDLE hFile = CreateFileW(sBinary.c_str(), GENERIC_WRITE, 0, 0, CREATE_ALWAYS,
+ FILE_ATTRIBUTE_NORMAL, 0);
+ if (hFile == INVALID_HANDLE_VALUE)
+ ThrowLastError("CreateFileW");
+ auto aFileHandleGuard(Guard(hFile));
+
+ const DWORD nBufSize = 1024 * 1024;
+ std::unique_ptr<char[]> buf(new char[nBufSize]);
+ DWORD nTotal = 0;
+ DWORD nRead;
+ do
+ {
+ nRead = nBufSize;
+ CheckWin32Error("MsiRecordReadStream",
+ MsiRecordReadStream(hBinaryRecord, 1, buf.get(), &nRead));
+
+ if (nRead > 0)
+ {
+ DWORD nWritten;
+ if (!WriteFile(hFile, buf.get(), nRead, &nWritten, nullptr))
+ ThrowLastError("WriteFile");
+ nTotal += nWritten;
+ }
+ } while (nRead == nBufSize);
+
+ WriteLog(hInstall, "Successfully wrote", Num2Dec(nTotal), "bytes");
+ }
+
+ CheckWin32Error("MsiSetPropertyW", MsiSetPropertyW(hInstall, L"inst_msu", sBinary.c_str()));
+
+ // Don't delete the file: it will be done by following actions (inst_msu or cleanup_msu)
+ aDeleteFileGuard.release();
+ return ERROR_SUCCESS;
+ }
+ catch (std::exception& e)
+ {
+ WriteLog(hInstall, e.what());
+ }
+ return ERROR_INSTALL_FAILURE;
+}
+
+// Deferred action "inst_msu" that must be run from system account. Receives the tempfile name from
+// "CustomActionData" property, and runs wusa.exe to install it. Waits for it and checks exit code.
+extern "C" UINT __stdcall InstallMSU(MSIHANDLE hInstall)
+{
+ try
+ {
+ sLogPrefix = "InstallMSU:";
+ WriteLog(hInstall, "started");
+
+ WriteLog(hInstall, "Checking value of CustomActionData");
+ wchar_t sBinaryName[MAX_PATH + 1];
+ DWORD nCCh = sizeof(sBinaryName) / sizeof(*sBinaryName);
+ CheckWin32Error("MsiGetPropertyW",
+ MsiGetPropertyW(hInstall, L"CustomActionData", sBinaryName, &nCCh));
+ WriteLog(hInstall, "Got CustomActionData value:", sBinaryName);
+ auto aDeleteFileGuard(Guard(sBinaryName));
+
+ // In case the Windows Update service is disabled, we temporarily enable it here
+ WUServiceEnabler aWUServiceEnabler(hInstall);
+
+ const bool bWow64Process = IsWow64Process();
+ WriteLog(hInstall, "Is Wow64 Process:", bWow64Process ? "YES" : "NO");
+ std::wstring sWUSAPath = bWow64Process ? GetKnownFolder(FOLDERID_Windows) + L"\\SysNative"
+ : GetKnownFolder(FOLDERID_System);
+ sWUSAPath += L"\\wusa.exe";
+ WriteLog(hInstall, "Prepared wusa path:", sWUSAPath);
+
+ std::wstring sWUSACmd
+ = L"\"" + sWUSAPath + L"\" \"" + sBinaryName + L"\" /quiet /norestart";
+ WriteLog(hInstall, "Prepared wusa command:", sWUSACmd);
+
+ STARTUPINFOW si{};
+ si.cb = sizeof(si);
+ PROCESS_INFORMATION pi{};
+ if (!CreateProcessW(sWUSAPath.c_str(), const_cast<LPWSTR>(sWUSACmd.c_str()), nullptr,
+ nullptr, FALSE, CREATE_NO_WINDOW, nullptr, nullptr, &si, &pi))
+ ThrowLastError("CreateProcessW");
+ auto aCloseProcHandleGuard(Guard(pi.hProcess));
+ WriteLog(hInstall, "CreateProcessW succeeded");
+
+ DWORD nWaitResult = WaitForSingleObject(pi.hProcess, INFINITE);
+ if (nWaitResult != WAIT_OBJECT_0)
+ ThrowWin32Error("WaitForSingleObject", nWaitResult);
+
+ DWORD nExitCode = 0;
+ if (!GetExitCodeProcess(pi.hProcess, &nExitCode))
+ ThrowLastError("GetExitCodeProcess");
+
+ HRESULT hr = static_cast<HRESULT>(nExitCode);
+ if (hr == HRESULT_FROM_WIN32(ERROR_SUCCESS_REBOOT_REQUIRED))
+ hr = WU_S_REBOOT_REQUIRED;
+
+ switch (hr)
+ {
+ case S_OK:
+ case S_FALSE:
+ case WU_S_ALREADY_INSTALLED:
+ case WU_E_NOT_APPLICABLE: // Windows could lie us about its version, etc.
+ case ERROR_SUCCESS_REBOOT_REQUIRED:
+ case WU_S_REBOOT_REQUIRED:
+ WriteLog(hInstall, "wusa.exe succeeded with exit code", Num2Hex(nExitCode));
+ return ERROR_SUCCESS;
+
+ default:
+ ThrowWin32Error("Execution of wusa.exe", nExitCode);
+ }
+ }
+ catch (std::exception& e)
+ {
+ WriteLog(hInstall, e.what());
+ }
+ return ERROR_INSTALL_FAILURE;
+}
+
+// Rollback deferred action "cleanup_msu" that is executed on error or cancel.
+// It removes the temporary file created by UnpackMSUForInstall action.
+// MUST be placed IMMEDIATELY AFTER "unpack_msu" in execute sequence.
+extern "C" UINT __stdcall CleanupMSU(MSIHANDLE hInstall)
+{
+ try
+ {
+ sLogPrefix = "CleanupMSU:";
+ WriteLog(hInstall, "started");
+
+ WriteLog(hInstall, "Checking value of CustomActionData");
+ wchar_t sBinaryName[MAX_PATH + 1];
+ DWORD nCCh = sizeof(sBinaryName) / sizeof(*sBinaryName);
+ CheckWin32Error("MsiGetPropertyW",
+ MsiGetPropertyW(hInstall, L"CustomActionData", sBinaryName, &nCCh));
+ WriteLog(hInstall, "Got CustomActionData value:", sBinaryName);
+
+ if (!DeleteFileW(sBinaryName))
+ ThrowLastError("DeleteFileW");
+ WriteLog(hInstall, "File successfully removed");
+ }
+ catch (std::exception& e)
+ {
+ WriteLog(hInstall, e.what());
+ }
+ // Always return success - we don't want rollback to fail.
+ return ERROR_SUCCESS;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/setup_native/source/win32/customactions/inst_msu/inst_msu_msi.def b/setup_native/source/win32/customactions/inst_msu/inst_msu_msi.def
new file mode 100644
index 000000000000..49ade9c0169e
--- /dev/null
+++ b/setup_native/source/win32/customactions/inst_msu/inst_msu_msi.def
@@ -0,0 +1,5 @@
+LIBRARY "inst_msu_msi.dll"
+EXPORTS
+ UnpackMSUForInstall
+ InstallMSU
+ CleanupMSU \ No newline at end of file