source: trunk/src/win32k/lib/libDosAllocMemEx.c

Last change on this file was 5224, checked in by bird, 25 years ago

CallGate changes.
File size: 1.8 KB
Line 
1/* $Id: libDosAllocMemEx.c,v 1.8 2001-02-21 07:47:58 bird Exp $
2 *
3 * DosAllocMemEx - Extened Edition of DosAllocMem.
4 * Allows you to suggest an address of the memory.
5 *
6 * Copyright (c) 2000-2001 knut st. osmundsen (knut.stange.osmundsen@mynd.no)
7 *
8 * Project Odin Software License can be found in LICENSE.TXT
9 *
10 */
11
12
13/*******************************************************************************
14* Header Files *
15*******************************************************************************/
16#define INCL_DOSERRORS
17#define INCL_DOSFILEMGR
18#define INCL_DOSDEVICES
19
20
21/*******************************************************************************
22* Internal Functions *
23*******************************************************************************/
24#include <os2.h>
25#include "win32k.h"
26#include "libPrivate.h"
27
28
29
30APIRET APIENTRY DosAllocMemEx(PPVOID ppv, ULONG cb, ULONG flag)
31{
32 APIRET rc;
33
34 if (fInited)
35 {
36 K32ALLOCMEMEX Param;
37 ULONG cbParam = sizeof(Param);
38 ULONG cbData = 0UL;
39
40 Param.hdr.cb = sizeof(Param);
41 Param.hdr.rc = ERROR_NOT_SUPPORTED;
42 Param.ppv = ppv;
43 Param.cb = cb;
44 Param.flFlags = flag;
45 Param.ulCS = libHelperGetCS();
46 Param.ulEIP = *(PULONG)((int)(&ppv) - 4);
47
48 if (usCGSelector)
49 return libCallThruCallGate(K32_ALLOCMEMEX, &Param);
50 rc = DosDevIOCtl(hWin32k,
51 IOCTL_W32K_K32,
52 K32_ALLOCMEMEX,
53 &Param, sizeof(Param), &cbParam,
54 "", 1, &cbData);
55 if (rc == NO_ERROR)
56 rc = Param.hdr.rc;
57 }
58 else
59 rc = ERROR_INIT_ROUTINE_FAILED;
60
61 return rc;
62}
63
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