source: trunk/src/win32k/dev32/d32Win32kOpenClose.c@ 9662

Last change on this file since 9662 was 6296, checked in by bird, 24 years ago

Use PTDA not PID and allways take loader sem.
File size: 2.8 KB
Line 
1/* $Id: d32Win32kOpenClose.c,v 1.2 2001-07-10 16:39:16 bird Exp $
2 *
3 * Open and Close handlers for the Win32k driver.
4 *
5 * Copyright (c) 2001 knut st. osmundsen (kosmunds@csc.no)
6 *
7 * Project Odin Software License can be found in LICENSE.TXT
8 *
9 */
10
11
12/*******************************************************************************
13* Defined Constants And Macros *
14*******************************************************************************/
15#define INCL_DOSERRORS
16#define INCL_NOPMAPI
17#define INCL_OS2KRNL_TK
18#define INCL_OS2KRNL_SEM
19#define INCL_OS2KRNL_LDR
20#define INCL_OS2KRNL_PTDA
21
22#define NO_WIN32K_LIB_FUNCTIONS
23
24
25/*******************************************************************************
26* Header Files *
27*******************************************************************************/
28#include <os2.h>
29
30#include "devSegDf.h"
31#include "dev32hlp.h"
32#include "dev1632.h"
33#include "dev32.h"
34#include "OS2Krnl.h"
35#include "Win32k.h"
36#include "log.h"
37#include "asmutils.h"
38#include "avl.h"
39#include "PerTaskW32kData.h"
40
41
42/*******************************************************************************
43* Internal Functions *
44*******************************************************************************/
45
46
47/**
48 * Open handler.
49 * Make sure there is a task data structure.
50 * @returns Strategy return status.
51 * @param pRpOpen Pointer to request packet.
52 * @author knut st. osmundsen (kosmunds@csc.no)
53 */
54USHORT _loadds _Far32 _Pascal Win32kOpen(PRP32OPENCLOSE pRpOpen)
55{
56 APIRET rc;
57 PPTD pptd;
58
59 /*
60 * Take Loader semaphore as that currently protects everything in this driver...
61 */
62 rc = LDRRequestSem();
63 if (rc != NO_ERROR)
64 {
65 kprintf(("Win32kOpen: LDRRequestSem failed with rc = %d\n", rc));
66 //return rc;
67 }
68
69 pptd = GetTaskData(0, TRUE);
70 if (pptd)
71 pptd->cUsage++;
72
73 pRpOpen = pRpOpen;
74 LDRClearSem();
75 return STATUS_DONE;
76}
77
78
79/**
80 * Close handler.
81 * Cleanup task data structure.
82 * @returns Strategy return status.
83 * @param pRpOpen Pointer to request packet.
84 * @author knut st. osmundsen (kosmunds@csc.no)
85 */
86USHORT _loadds _Far32 _Pascal Win32kClose(PRP32OPENCLOSE pRpClose)
87{
88 APIRET rc;
89 PPTD pptd;
90
91 /*
92 * Take Loader semaphore as that currently protects everything in this driver...
93 */
94 rc = LDRRequestSem();
95 if (rc != NO_ERROR)
96 {
97 kprintf(("Win32kClose: LDRRequestSem failed with rc = %d\n", rc));
98 //return rc;
99 }
100
101 pptd = GetTaskData(0, FALSE);
102 if (pptd)
103 {
104 if (pptd->cUsage > 0)
105 pptd->cUsage--;
106 if (pptd->cUsage == 0)
107 RemoveTaskData(0);
108 }
109 pRpClose = pRpClose;
110
111 LDRClearSem();
112 return STATUS_DONE;
113}
114
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