Keep the file handle of 16-bit modules open while the module is

dlls/kernel/ne_module.c

@@ -77,8 +77,6 @@ struct ne_segment_table_entry_s
 
 #define hFirstModule (pThhook->hExeHead)
 
-static NE_MODULE *pCachedModule = 0;  /* Module cached by NE_OpenFile */
-
 typedef struct
 {
     void       *module_start;      /* 32-bit address of the module data */
@@ -563,15 +561,24 @@ BOOL16 NE_SetEntryPoint( HMODULE16 hModule, WORD ordinal, WORD offset )
 HANDLE NE_OpenFile( NE_MODULE *pModule )
 {
     HANDLE handle;
-    char *name;
+    char *name = NE_MODULE_NAME( pModule );
 
     TRACE("(%p)\n", pModule );
-    /* mjm - removed module caching because it keeps open file handles
-             thus preventing CDROMs from being ejected */
-    name = NE_MODULE_NAME( pModule );
-    if ((handle = CreateFileA( name, GENERIC_READ, FILE_SHARE_READ,
-                                   NULL, OPEN_EXISTING, 0, 0 )) == INVALID_HANDLE_VALUE)
-        MESSAGE( "Can't open file '%s' for module %04x\n", name, pModule->self );
+
+    if (pModule->fd)
+    {
+        if (!DuplicateHandle( GetCurrentProcess(), pModule->fd,
+                              GetCurrentProcess(), &handle, 0, FALSE,
+                              DUPLICATE_SAME_ACCESS )) handle = INVALID_HANDLE_VALUE;
+    }
+    else
+    {
+        handle = CreateFileA( name, GENERIC_READ, FILE_SHARE_READ,
+                              NULL, OPEN_EXISTING, 0, 0 );
+    }
+    if (handle == INVALID_HANDLE_VALUE)
+        ERR( "Can't open file '%s' for module %04x\n", name, pModule->self );
+
     TRACE("opened '%s' -> %p\n", name, handle);
     return handle;
 }
@@ -1027,17 +1034,29 @@ static HINSTANCE16 NE_LoadModule( LPCSTR name, BOOL lib_only )
     HINSTANCE16 hInstance;
     HFILE16 hFile;
     OFSTRUCT ofs;
+    UINT drive_type;
 
     /* Open file */
-    if ((hFile = OpenFile16( name, &ofs, OF_READ )) == HFILE_ERROR16)
+    if ((hFile = OpenFile16( name, &ofs, OF_READ|OF_SHARE_DENY_WRITE )) == HFILE_ERROR16)
         return (HMODULE16)2;  /* File not found */
 
     hModule = NE_LoadExeHeader( DosFileHandleToWin32Handle(hFile), ofs.szPathName );
-    _lclose16( hFile );
-    if (hModule < 32) return hModule;
-
+    if (hModule < 32)
+    {
+        _lclose16( hFile );
+        return hModule;
+    }
     pModule = NE_GetPtr( hModule );
-    if ( !pModule ) return hModule;
+
+    drive_type = GetDriveTypeA( ofs.szPathName );
+    if (drive_type != DRIVE_REMOVABLE && drive_type != DRIVE_CDROM)
+    {
+        /* keep the file handle open if not on a removable media */
+        DuplicateHandle( GetCurrentProcess(), DosFileHandleToWin32Handle(hFile),
+                         GetCurrentProcess(), &pModule->fd, 0, FALSE,
+                         DUPLICATE_SAME_ACCESS );
+    }
+    _lclose16( hFile );
 
     if ( !lib_only && !( pModule->flags & NE_FFLAGS_LIBMODULE ) )
         return hModule;
@@ -1521,6 +1540,7 @@ static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL call_wep )
     /* Clear magic number just in case */
 
     pModule->magic = pModule->self = 0;
+    if (pModule->fd) CloseHandle( pModule->fd );
 
       /* Remove it from the linked list */
 
@@ -1542,10 +1562,6 @@ static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL call_wep )
     /* Free the module storage */
 
     GlobalFreeAll16( hModule );
-
-    /* Remove module from cache */
-
-    if (pCachedModule == pModule) pCachedModule = NULL;
     return TRUE;
 }
 
@@ -2080,6 +2096,21 @@ void WINAPI PrivateFreeLibrary(HINSTANCE16 handle)
     FreeLibrary16(handle);
 }
 
+/***********************************************************************
+ *           LoadLibrary32        (KERNEL.452)
+ *           LoadSystemLibrary32  (KERNEL.482)
+ */
+HMODULE WINAPI LoadLibrary32_16( LPCSTR libname )
+{
+    HMODULE hModule;
+    DWORD count;
+
+    ReleaseThunkLock( &count );
+    hModule = LoadLibraryA( libname );
+    RestoreThunkLock( count );
+    return hModule;
+}
+
 /***************************************************************************
  *		MapHModuleLS			(KERNEL32.@)
  */

files/file.c

@@ -1221,30 +1221,13 @@ found:
     WideCharToMultiByte(CP_ACP, 0, full_name.short_name, -1,
                         ofs->szPathName, sizeof(ofs->szPathName), NULL, NULL);
 
-    if (mode & OF_SHARE_EXCLUSIVE)
-      /* Some InstallShield version uses OF_SHARE_EXCLUSIVE
-	 on the file <tempdir>/_ins0432._mp to determine how
-	 far installation has proceeded.
-	 _ins0432._mp is an executable and while running the
-	 application expects the open with OF_SHARE_ to fail*/
-      /* Probable FIXME:
-	 As our loader closes the files after loading the executable,
-	 we can't find the running executable with FILE_InUse.
-	 The loader should keep the file open, as Windows does that, too.
-       */
-      {
-	char *last = strrchr(full_name.long_name,'/');
-	if (!last)
-	  last = full_name.long_name - 1;
-	if (GetModuleHandle16(last+1))
-	  {
-	    TRACE("Denying shared open for %s\n",full_name.long_name);
-	    return HFILE_ERROR;
-	  }
-      }
-
     if (mode & OF_DELETE)
     {
+        handle = FILE_CreateFile( full_name.long_name, GENERIC_READ|GENERIC_WRITE, 0,
+                                 NULL, OPEN_EXISTING, 0, 0, TRUE,
+                                 GetDriveTypeW( full_name.short_name ) );
+        if (!handle) goto error;
+        CloseHandle( handle );
         if (unlink( full_name.long_name ) == -1) goto not_found;
         TRACE("(%s): OF_DELETE return = OK\n", name);
         return 1;

include/module.h

@@ -69,6 +69,7 @@ typedef struct _NE_MODULE
     HMODULE16  self;          /* 44 Handle for this module */
     WORD    self_loading_sel; /* 46 Selector used for self-loading apps. */
     LPVOID  hRsrcMap;         /* HRSRC 16->32 map (for 32-bit modules) */
+    HANDLE  fd;               /* handle to the binary file */
 } NE_MODULE;
 
 

loader/module.c

@@ -618,21 +618,6 @@ HMODULE WINAPI LoadLibraryW(LPCWSTR libnameW)
 }
 
 /***********************************************************************
- *           LoadLibrary32        (KERNEL.452)
- *           LoadSystemLibrary32  (KERNEL.482)
- */
-HMODULE WINAPI LoadLibrary32_16( LPCSTR libname )
-{
-    HMODULE hModule;
-    DWORD count;
-
-    ReleaseThunkLock( &count );
-    hModule = LoadLibraryA( libname );
-    RestoreThunkLock( count );
-    return hModule;
-}
-
-/***********************************************************************
  *           FreeLibrary   (KERNEL32.@)
  *           FreeLibrary32 (KERNEL.486)
  */