1 /* -*- tab-width: 8; c-basic-offset: 4 -*- */
4 * WINE Drivers functions
6 * Copyright 1994 Martin Ayotte
7 * Copyright 1998 Marcus Meissner
8 * Copyright 1999 Eric Pouech
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
35 #include "wine/debug.h"
37 WINE_DEFAULT_DEBUG_CHANNEL(driver);
39 #define HKLM_BASE "Software\\Microsoft\\Windows NT\\CurrentVersion"
41 static LPWINE_DRIVER lpDrvItemList /* = NULL */;
43 WINE_MMTHREAD* (*pFnGetMMThread16)(UINT16 h) /* = NULL */;
44 LPWINE_DRIVER (*pFnOpenDriver16)(LPCSTR,LPCSTR,LPARAM) /* = NULL */;
45 LRESULT (*pFnCloseDriver16)(UINT16,LPARAM,LPARAM) /* = NULL */;
46 LRESULT (*pFnSendMessage16)(UINT16,UINT,LPARAM,LPARAM) /* = NULL */;
48 /**************************************************************************
49 * DRIVER_GetNumberOfModuleRefs [internal]
51 * Returns the number of open drivers which share the same module.
53 static unsigned DRIVER_GetNumberOfModuleRefs(HMODULE hModule, WINE_DRIVER** found)
58 if (found) *found = NULL;
59 for (lpDrv = lpDrvItemList; lpDrv; lpDrv = lpDrv->lpNextItem)
61 if (!(lpDrv->dwFlags & WINE_GDF_16BIT) && lpDrv->d.d32.hModule == hModule)
63 if (found && !*found) *found = lpDrv;
70 /**************************************************************************
71 * DRIVER_FindFromHDrvr [internal]
73 * From a hDrvr being 32 bits, returns the WINE internal structure.
75 LPWINE_DRIVER DRIVER_FindFromHDrvr(HDRVR hDrvr)
77 LPWINE_DRIVER d = (LPWINE_DRIVER)hDrvr;
79 if (hDrvr && HeapValidate(GetProcessHeap(), 0, d) && d->dwMagic == WINE_DI_MAGIC) {
85 /**************************************************************************
86 * DRIVER_SendMessage [internal]
88 static LRESULT inline DRIVER_SendMessage(LPWINE_DRIVER lpDrv, UINT msg,
89 LPARAM lParam1, LPARAM lParam2)
93 if (lpDrv->dwFlags & WINE_GDF_16BIT) {
94 /* no need to check mmsystem presence: the driver must have been opened as a 16 bit one,
97 ret = pFnSendMessage16(lpDrv->d.d16.hDriver16, msg, lParam1, lParam2);
99 TRACE("Before call32 proc=%p drvrID=%08lx hDrv=%p wMsg=%04x p1=%08lx p2=%08lx\n",
100 lpDrv->d.d32.lpDrvProc, lpDrv->d.d32.dwDriverID, (HDRVR)lpDrv, msg, lParam1, lParam2);
101 ret = lpDrv->d.d32.lpDrvProc(lpDrv->d.d32.dwDriverID, (HDRVR)lpDrv, msg, lParam1, lParam2);
102 TRACE("After call32 proc=%p drvrID=%08lx hDrv=%p wMsg=%04x p1=%08lx p2=%08lx => %08lx\n",
103 lpDrv->d.d32.lpDrvProc, lpDrv->d.d32.dwDriverID, (HDRVR)lpDrv, msg, lParam1, lParam2, ret);
108 /**************************************************************************
109 * SendDriverMessage [WINMM.@]
110 * DrvSendMessage [WINMM.@]
112 LRESULT WINAPI SendDriverMessage(HDRVR hDriver, UINT msg, LPARAM lParam1,
118 TRACE("(%p, %04X, %08lX, %08lX)\n", hDriver, msg, lParam1, lParam2);
120 if ((lpDrv = DRIVER_FindFromHDrvr(hDriver)) != NULL) {
121 retval = DRIVER_SendMessage(lpDrv, msg, lParam1, lParam2);
123 WARN("Bad driver handle %p\n", hDriver);
125 TRACE("retval = %ld\n", retval);
130 /**************************************************************************
131 * DRIVER_RemoveFromList [internal]
133 * Generates all the logic to handle driver closure / deletion
134 * Removes a driver struct to the list of open drivers.
136 static BOOL DRIVER_RemoveFromList(LPWINE_DRIVER lpDrv)
138 if (!(lpDrv->dwFlags & WINE_GDF_16BIT)) {
139 /* last of this driver in list ? */
140 if (DRIVER_GetNumberOfModuleRefs(lpDrv->d.d32.hModule, NULL) == 1) {
141 DRIVER_SendMessage(lpDrv, DRV_DISABLE, 0L, 0L);
142 DRIVER_SendMessage(lpDrv, DRV_FREE, 0L, 0L);
146 if (lpDrv->lpPrevItem)
147 lpDrv->lpPrevItem->lpNextItem = lpDrv->lpNextItem;
149 lpDrvItemList = lpDrv->lpNextItem;
150 if (lpDrv->lpNextItem)
151 lpDrv->lpNextItem->lpPrevItem = lpDrv->lpPrevItem;
152 /* trash magic number */
153 lpDrv->dwMagic ^= 0xa5a5a5a5;
158 /**************************************************************************
159 * DRIVER_AddToList [internal]
161 * Adds a driver struct to the list of open drivers.
162 * Generates all the logic to handle driver creation / open.
164 static BOOL DRIVER_AddToList(LPWINE_DRIVER lpNewDrv, LPARAM lParam1, LPARAM lParam2)
166 lpNewDrv->dwMagic = WINE_DI_MAGIC;
167 /* First driver to be loaded for this module, need to load correctly the module */
168 if (!(lpNewDrv->dwFlags & WINE_GDF_16BIT)) {
169 /* first of this driver in list ? */
170 if (DRIVER_GetNumberOfModuleRefs(lpNewDrv->d.d32.hModule, NULL) == 0) {
171 if (DRIVER_SendMessage(lpNewDrv, DRV_LOAD, 0L, 0L) != DRV_SUCCESS) {
172 TRACE("DRV_LOAD failed on driver 0x%08lx\n", (DWORD)lpNewDrv);
175 /* returned value is not checked */
176 DRIVER_SendMessage(lpNewDrv, DRV_ENABLE, 0L, 0L);
180 lpNewDrv->lpNextItem = NULL;
181 if (lpDrvItemList == NULL) {
182 lpDrvItemList = lpNewDrv;
183 lpNewDrv->lpPrevItem = NULL;
185 LPWINE_DRIVER lpDrv = lpDrvItemList; /* find end of list */
186 while (lpDrv->lpNextItem != NULL)
187 lpDrv = lpDrv->lpNextItem;
189 lpDrv->lpNextItem = lpNewDrv;
190 lpNewDrv->lpPrevItem = lpDrv;
193 if (!(lpNewDrv->dwFlags & WINE_GDF_16BIT)) {
194 /* Now just open a new instance of a driver on this module */
195 lpNewDrv->d.d32.dwDriverID = DRIVER_SendMessage(lpNewDrv, DRV_OPEN, lParam1, lParam2);
197 if (lpNewDrv->d.d32.dwDriverID == 0) {
198 TRACE("DRV_OPEN failed on driver 0x%08lx\n", (DWORD)lpNewDrv);
199 DRIVER_RemoveFromList(lpNewDrv);
206 /**************************************************************************
207 * DRIVER_GetLibName [internal]
210 BOOL DRIVER_GetLibName(LPCSTR keyName, LPCSTR sectName, LPSTR buf, int sz)
215 lRet = RegOpenKeyExA(HKEY_LOCAL_MACHINE, HKLM_BASE, 0, KEY_QUERY_VALUE, &hKey);
216 if (lRet == ERROR_SUCCESS) {
217 lRet = RegOpenKeyExA(hKey, sectName, 0, KEY_QUERY_VALUE, &hSecKey);
218 if (lRet == ERROR_SUCCESS) {
219 lRet = RegQueryValueExA(hSecKey, keyName, 0, 0, buf, &bufLen);
220 RegCloseKey( hSecKey );
224 if (lRet == ERROR_SUCCESS) return TRUE;
225 /* default to system.ini if we can't find it in the registry,
226 * to support native installations where system.ini is still used */
227 return GetPrivateProfileStringA(sectName, keyName, "", buf, sz, "SYSTEM.INI");
230 /**************************************************************************
231 * DRIVER_TryOpenDriver32 [internal]
233 * Tries to load a 32 bit driver whose DLL's (module) name is fn
235 LPWINE_DRIVER DRIVER_TryOpenDriver32(LPCSTR fn, LPARAM lParam2)
237 LPWINE_DRIVER lpDrv = NULL;
242 TRACE("(%s, %08lX);\n", debugstr_a(fn), lParam2);
244 if ((ptr = strchr(fn, ' ')) != NULL) {
246 while (*ptr == ' ') ptr++;
247 if (*ptr == '\0') ptr = NULL;
250 lpDrv = HeapAlloc(GetProcessHeap(), 0, sizeof(WINE_DRIVER));
251 if (lpDrv == NULL) {cause = "OOM"; goto exit;}
253 if ((hModule = LoadLibraryA(fn)) == 0) {cause = "Not a 32 bit lib"; goto exit;}
255 lpDrv->d.d32.lpDrvProc = (DRIVERPROC)GetProcAddress(hModule, "DriverProc");
256 if (lpDrv->d.d32.lpDrvProc == NULL) {cause = "no DriverProc"; goto exit;}
259 lpDrv->d.d32.hModule = hModule;
260 lpDrv->d.d32.dwDriverID = 0;
262 /* Win32 installable drivers must support a two phase opening scheme:
263 * + first open with NULL as lParam2 (session instance),
264 * + then do a second open with the real non null lParam2)
266 if (DRIVER_GetNumberOfModuleRefs(lpDrv->d.d32.hModule, NULL) == 0 && lParam2)
270 if (!DRIVER_AddToList(lpDrv, (LPARAM)ptr, 0L))
272 cause = "load0 failed";
275 ret = DRIVER_TryOpenDriver32(fn, lParam2);
278 CloseDriver((HDRVR)lpDrv, 0L, 0L);
279 cause = "load1 failed";
285 if (!DRIVER_AddToList(lpDrv, (LPARAM)ptr, lParam2))
286 {cause = "load failed"; goto exit;}
288 TRACE("=> %p\n", lpDrv);
291 FreeLibrary(hModule);
292 HeapFree(GetProcessHeap(), 0, lpDrv);
293 TRACE("Unable to load 32 bit module %s: %s\n", debugstr_a(fn), cause);
297 /**************************************************************************
298 * OpenDriverA [WINMM.@]
300 * (0,1,DRV_LOAD ,0 ,0)
301 * (0,1,DRV_ENABLE,0 ,0)
302 * (0,1,DRV_OPEN ,buf[256],0)
304 HDRVR WINAPI OpenDriverA(LPCSTR lpDriverName, LPCSTR lpSectionName, LPARAM lParam2)
306 LPWINE_DRIVER lpDrv = NULL;
308 LPCSTR lsn = lpSectionName;
310 TRACE("(%s, %s, 0x%08lx);\n", debugstr_a(lpDriverName), debugstr_a(lpSectionName), lParam2);
313 lstrcpynA(libName, lpDriverName, sizeof(libName));
315 if ((lpDrv = DRIVER_TryOpenDriver32(libName, lParam2)))
319 if (DRIVER_GetLibName(lpDriverName, lsn, libName, sizeof(libName)) &&
320 (lpDrv = DRIVER_TryOpenDriver32(libName, lParam2)))
323 /* now we will try a 16 bit driver (and add all the glue to make it work... which
324 * is located in our mmsystem implementation)
325 * so ensure, we can load our mmsystem, otherwise just fail
327 WINMM_CheckForMMSystem();
328 if (pFnOpenDriver16 &&
329 (lpDrv = pFnOpenDriver16(lpDriverName, lpSectionName, lParam2)))
331 if (DRIVER_AddToList(lpDrv, 0, lParam2)) goto the_end;
332 HeapFree(GetProcessHeap(), 0, lpDrv);
334 TRACE("Failed to open driver %s from system.ini file, section %s\n", debugstr_a(lpDriverName), debugstr_a(lpSectionName));
338 if (lpDrv) TRACE("=> %08lx\n", (DWORD)lpDrv);
342 /**************************************************************************
343 * OpenDriver [WINMM.@]
346 HDRVR WINAPI OpenDriverW(LPCWSTR lpDriverName, LPCWSTR lpSectionName, LPARAM lParam)
355 len = WideCharToMultiByte( CP_ACP, 0, lpDriverName, -1, NULL, 0, NULL, NULL );
356 dn = HeapAlloc( GetProcessHeap(), 0, len );
358 WideCharToMultiByte( CP_ACP, 0, lpDriverName, -1, dn, len, NULL, NULL );
363 len = WideCharToMultiByte( CP_ACP, 0, lpSectionName, -1, NULL, 0, NULL, NULL );
364 sn = HeapAlloc( GetProcessHeap(), 0, len );
366 WideCharToMultiByte( CP_ACP, 0, lpSectionName, -1, sn, len, NULL, NULL );
369 ret = OpenDriverA(dn, sn, lParam);
371 if (dn) HeapFree(GetProcessHeap(), 0, dn);
372 if (sn) HeapFree(GetProcessHeap(), 0, sn);
376 /**************************************************************************
377 * CloseDriver [WINMM.@]
380 LRESULT WINAPI CloseDriver(HDRVR hDrvr, LPARAM lParam1, LPARAM lParam2)
384 TRACE("(%p, %08lX, %08lX);\n", hDrvr, lParam1, lParam2);
386 if ((lpDrv = DRIVER_FindFromHDrvr(hDrvr)) != NULL)
388 if (lpDrv->dwFlags & WINE_GDF_16BIT)
390 if (pFnCloseDriver16)
391 pFnCloseDriver16(lpDrv->d.d16.hDriver16, lParam1, lParam2);
395 DRIVER_SendMessage(lpDrv, DRV_CLOSE, lParam1, lParam2);
396 lpDrv->d.d32.dwDriverID = 0;
398 if (DRIVER_RemoveFromList(lpDrv)) {
399 if (!(lpDrv->dwFlags & WINE_GDF_16BIT))
401 LPWINE_DRIVER lpDrv0;
403 /* if driver has an opened session instance, we have to close it too */
404 if (DRIVER_GetNumberOfModuleRefs(lpDrv->d.d32.hModule, &lpDrv0) == 1)
406 DRIVER_SendMessage(lpDrv0, DRV_CLOSE, 0L, 0L);
407 lpDrv0->d.d32.dwDriverID = 0;
408 DRIVER_RemoveFromList(lpDrv0);
409 FreeLibrary(lpDrv0->d.d32.hModule);
410 HeapFree(GetProcessHeap(), 0, lpDrv0);
412 FreeLibrary(lpDrv->d.d32.hModule);
414 HeapFree(GetProcessHeap(), 0, lpDrv);
418 WARN("Failed to close driver\n");
422 /**************************************************************************
423 * GetDriverFlags [WINMM.@]
424 * [in] hDrvr handle to the driver
427 * 0x00000000 if hDrvr is an invalid handle
428 * 0x80000000 if hDrvr is a valid 32 bit driver
429 * 0x90000000 if hDrvr is a valid 16 bit driver
431 * native WINMM doesn't return those flags
432 * 0x80000000 for a valid 32 bit driver and that's it
433 * (I may have mixed up the two flags :-(
435 DWORD WINAPI GetDriverFlags(HDRVR hDrvr)
440 TRACE("(%p)\n", hDrvr);
442 if ((lpDrv = DRIVER_FindFromHDrvr(hDrvr)) != NULL) {
443 ret = WINE_GDF_EXIST | lpDrv->dwFlags;
448 /**************************************************************************
449 * GetDriverModuleHandle [WINMM.@]
450 * DrvGetModuleHandle [WINMM.@]
452 HMODULE WINAPI GetDriverModuleHandle(HDRVR hDrvr)
457 TRACE("(%p);\n", hDrvr);
459 if ((lpDrv = DRIVER_FindFromHDrvr(hDrvr)) != NULL) {
460 if (!(lpDrv->dwFlags & WINE_GDF_16BIT))
461 hModule = lpDrv->d.d32.hModule;
463 TRACE("=> %p\n", hModule);
467 /**************************************************************************
468 * DefDriverProc [WINMM.@]
469 * DrvDefDriverProc [WINMM.@]
471 LRESULT WINAPI DefDriverProc(DWORD_PTR dwDriverIdentifier, HDRVR hDrv,
472 UINT Msg, LPARAM lParam1, LPARAM lParam2)
488 /**************************************************************************
489 * DriverCallback [WINMM.@]
491 BOOL WINAPI DriverCallback(DWORD dwCallBack, UINT uFlags, HDRVR hDev,
492 UINT wMsg, DWORD dwUser, DWORD dwParam1,
495 TRACE("(%08lX, %04X, %p, %04X, %08lX, %08lX, %08lX); !\n",
496 dwCallBack, uFlags, hDev, wMsg, dwUser, dwParam1, dwParam2);
498 switch (uFlags & DCB_TYPEMASK) {
502 WARN("uFlags=%04X has null DCB value, but dwCallBack=%08lX is not null !\n", uFlags, dwCallBack);
505 TRACE("Window(%04lX) handle=%p!\n", dwCallBack, hDev);
506 PostMessageA((HWND)dwCallBack, wMsg, (WPARAM)hDev, dwParam1);
508 case DCB_TASK: /* aka DCB_THREAD */
509 TRACE("Task(%04lx) !\n", dwCallBack);
510 PostThreadMessageA(dwCallBack, wMsg, (WPARAM)hDev, dwParam1);
513 TRACE("Function (32 bit) !\n");
514 ((LPDRVCALLBACK)dwCallBack)(hDev, wMsg, dwUser, dwParam1, dwParam2);
517 TRACE("Event(%08lx) !\n", dwCallBack);
518 SetEvent((HANDLE)dwCallBack);
520 case 6: /* I would dub it DCB_MMTHREADSIGNAL */
521 /* this is an undocumented DCB_ value used for mmThreads
522 * loword of dwCallBack contains the handle of the lpMMThd block
523 * which dwSignalCount has to be incremented
525 if (pFnGetMMThread16)
527 WINE_MMTHREAD* lpMMThd = pFnGetMMThread16(LOWORD(dwCallBack));
529 TRACE("mmThread (%04x, %p) !\n", LOWORD(dwCallBack), lpMMThd);
530 /* same as mmThreadSignal16 */
531 InterlockedIncrement(&lpMMThd->dwSignalCount);
532 SetEvent(lpMMThd->hEvent);
533 /* some other stuff on lpMMThd->hVxD */
538 /* this is an undocumented DCB_ value for... I don't know */
542 WARN("Unknown callback type %d\n", uFlags & DCB_TYPEMASK);
549 /******************************************************************
554 void DRIVER_UnloadAll(void)
557 LPWINE_DRIVER lpNextDrv = NULL;
560 for (lpDrv = lpDrvItemList; lpDrv != NULL; lpDrv = lpNextDrv)
562 lpNextDrv = lpDrv->lpNextItem;
563 CloseDriver((HDRVR)lpDrv, 0, 0);
566 TRACE("Unloaded %u drivers\n", count);