[PATCH v3 5/6] msi: Get system directory just once.

[Paul Gofman]

From: Paul Gofman

---
 dlls/msi/action.c   | 3 +--
 dlls/msi/assembly.c | 3 +--
 dlls/msi/custom.c   | 2 +-
 dlls/msi/msi_main.c | 3 +++
 dlls/msi/msipriv.h  | 2 ++
 dlls/msi/package.c  | 4 ++--
 6 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/dlls/msi/action.c b/dlls/msi/action.c
index f9b43692ab3..f750b875d6b 100644
--- a/dlls/msi/action.c
+++ b/dlls/msi/action.c
@@ -5210,12 +5210,11 @@ static UINT ACTION_InstallFinalize(MSIPACKAGE *package)

UINT ACTION_ForceReboot(MSIPACKAGE *package)
 {
-    WCHAR buffer[256], sysdir[MAX_PATH], squashed_pc[SQUASHED_GUID_SIZE];
+    WCHAR buffer[256], squashed_pc[SQUASHED_GUID_SIZE];
     HKEY hkey;

squash_guid( package->ProductCode, squashed_pc );

-    GetSystemDirectoryW(sysdir, ARRAY_SIZE(sysdir));
     RegCreateKeyW(HKEY_LOCAL_MACHINE, L"Software\Microsoft\Windows\CurrentVersion\RunOnce", &hkey);
     swprintf(buffer, ARRAY_SIZE(buffer), L"%s\MsiExec.exe /@ "%s"", sysdir, squashed_pc);

diff --git a/dlls/msi/assembly.c b/dlls/msi/assembly.c
index 47e8071502c..6613bf3bf96 100644
--- a/dlls/msi/assembly.c
+++ b/dlls/msi/assembly.c
@@ -34,9 +34,8 @@ static void load_fusion_dlls( MSIPACKAGE *package )
 {
     HRESULT (WINAPI *pLoadLibraryShim)( const WCHAR *, const WCHAR *, void *, HMODULE * );
     WCHAR path[MAX_PATH];
-    DWORD len = GetSystemDirectoryW( path, MAX_PATH );

-    lstrcpyW( path + len, L"\mscoree.dll" );
+    lstrcpyW( path + sysdir_len, L"\mscoree.dll" );
     if (!package->hmscoree && !(package->hmscoree = LoadLibraryW( path ))) return;
     if (!(pLoadLibraryShim = (void *)GetProcAddress( package->hmscoree, "LoadLibraryShim" )))
     {
diff --git a/dlls/msi/custom.c b/dlls/msi/custom.c
index 12a7c3c3676..54e1897a2c5 100644
--- a/dlls/msi/custom.c
+++ b/dlls/msi/custom.c
@@ -612,7 +612,7 @@ static DWORD custom_start_server(MSIPACKAGE *package, DWORD arch)
     if ((sizeof(void *) == 8 || is_wow64) && arch == SCS_32BIT_BINARY)
         GetSystemWow64DirectoryW(path, MAX_PATH - ARRAY_SIZE(L"\msiexec.exe"));
     else
-        GetSystemDirectoryW(path, MAX_PATH - ARRAY_SIZE(L"\msiexec.exe"));
+        wcscpy(path, sysdir);
     lstrcatW(path, L"\msiexec.exe");
     swprintf(cmdline, ARRAY_SIZE(cmdline), L"%s -Embedding %d", path, GetCurrentProcessId());

diff --git a/dlls/msi/msi_main.c b/dlls/msi/msi_main.c
index a2b6b6a0503..32b4f9ad45d 100644
--- a/dlls/msi/msi_main.c
+++ b/dlls/msi/msi_main.c
@@ -50,6 +50,8 @@ LPVOID                   gUIContextRecord = NULL;
 WCHAR                   *gszLogFile       = NULL;
 HINSTANCE msi_hInstance;

+WCHAR sysdir[MAX_PATH];
+SIZE_T sysdir_len;

/*
  * Dll lifetime tracking declaration
@@ -75,6 +77,7 @@ BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
         msi_hInstance = hinstDLL;
         DisableThreadLibraryCalls(hinstDLL);
         IsWow64Process( GetCurrentProcess(), &is_wow64 );
+        sysdir_len = GetSystemDirectoryW( sysdir, ARRAY_SIZE(sysdir) );
         break;
     case DLL_PROCESS_DETACH:
         if (lpvReserved) break;
diff --git a/dlls/msi/msipriv.h b/dlls/msi/msipriv.h
index aebfc85ab76..bd8f6ec7a48 100644
--- a/dlls/msi/msipriv.h
+++ b/dlls/msi/msipriv.h
@@ -43,6 +43,8 @@

static const BOOL is_64bit = sizeof(void *) > sizeof(int);
 extern BOOL is_wow64;
+extern WCHAR sysdir[MAX_PATH];
+extern SIZE_T sysdir_len;

#define MSI_DATASIZEMASK 0x00ff
 #define MSITYPE_VALID    0x0100
diff --git a/dlls/msi/package.c b/dlls/msi/package.c
index b8966a0df90..969441f8827 100644
--- a/dlls/msi/package.c
+++ b/dlls/msi/package.c
@@ -777,7 +777,7 @@ static VOID set_installer_properties(MSIPACKAGE *package)
     msi_set_property( package->db, L"Intel", bufstr, len );
     if (sys_info.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_INTEL)
     {
-        GetSystemDirectoryW( pth, MAX_PATH );
+        wcscpy( pth, sysdir );
         PathAddBackslashW( pth );
         msi_set_property( package->db, L"SystemFolder", pth, -1 );

@@ -798,7 +798,7 @@ static VOID set_installer_properties(MSIPACKAGE *package)
         msi_set_property( package->db, L"Msix64", bufstr, -1 );
         msi_set_property( package->db, L"VersionNT64", verstr, -1 );

-        GetSystemDirectoryW( pth, MAX_PATH );
+        wcscpy( pth, sysdir );
         PathAddBackslashW( pth );
         msi_set_property( package->db, L"System64Folder", pth, -1 );