1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
|
/*++
Copyright (c) 1991-1993 Microsoft Corporation
Module Name:
unlodctr.c
Abstract:
Program to remove the counter names belonging to the driver specified
in the command line and update the registry accordingly
Author:
Bob Watson (a-robw) 12 Feb 93
Revision History:
--*/
#define UNICODE 1
#define _UNICODE 1
//
// "C" Include files
//
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <malloc.h>
//
// Windows Include files
//
#include <windows.h>
#include <winperf.h>
#include <tchar.h>
//
// local include files
//
//#define _INITIALIZE_GLOBALS_ 1 // to define & init global buffers
#include "common.h"
//#undef _INITIALIZE_GLOBALS_
#include "nwcfg.hxx"
// version number for NT 1.0
#define OLD_VERSION 0x010000
DWORD dwSystemVersion; // PerfLib version number
DWORD dwHelpItems; // number of explain text items
DWORD dwCounterItems; // number of counter text items
DWORD dwLastCounter;
DWORD dwLastHelp;
LPTSTR
*BuildNameTable(
IN HKEY hKeyPerflib, // handle to perflib key with counter names
IN LPTSTR lpszLangId, // unicode value of Language subkey
OUT PDWORD pdwLastItem, // size of array in elements
OUT HKEY *hKeyNames,
OUT LPTSTR CounterNameBuffer, // New version counter name key
OUT LPTSTR HelpNameBuffer // New version help name key
)
/*++
BuildNameTable
Caches the counter names and explain text to accelerate name lookups
for display.
Arguments:
hKeyPerflib
Handle to an open registry (this can be local or remote.) and
is the value returned by RegConnectRegistry or a default key.
lpszLangId
The unicode id of the language to look up. (default is 009)
pdwLastItem
The last array element
Return Value:
pointer to an allocated table. (the caller must free it when finished!)
the table is an array of pointers to zero terminated TEXT strings.
A NULL pointer is returned if an error occured. (error value is
available using the GetLastError function).
The structure of the buffer returned is:
Array of pointers to zero terminated strings consisting of
pdwLastItem elements
MULTI_SZ string containing counter id's and names returned from
registry for the specified language
MULTI_SZ string containing explain text id's and explain text strings
as returned by the registry for the specified language
The structures listed above are contiguous so that they may be freed
by a single "free" call when finished with them, however only the
array elements are intended to be used.
--*/
{
LPTSTR *lpReturnValue; // returned pointer to buffer
LPTSTR *lpCounterId; //
LPTSTR lpCounterNames; // pointer to Names buffer returned by reg.
LPTSTR lpHelpText ; // pointet to exlpain buffer returned by reg.
LPTSTR lpThisName; // working pointer
BOOL bStatus; // return status from TRUE/FALSE fn. calls
LONG lWin32Status; // return status from fn. calls
DWORD dwValueType; // value type of buffer returned by reg.
DWORD dwArraySize; // size of pointer array in bytes
DWORD dwBufferSize; // size of total buffer in bytes
DWORD dwCounterSize; // size of counter text buffer in bytes
DWORD dwHelpSize; // size of help text buffer in bytes
DWORD dwThisCounter; // working counter
DWORD dwLastId; // largest ID value used by explain/counter text
LPTSTR lpValueNameString; // pointer to buffer conatining subkey name
//initialize pointers to NULL
lpValueNameString = NULL;
lpReturnValue = NULL;
// check for null arguments and insert defaults if necessary
if (!lpszLangId) {
lpszLangId = DefaultLangId;
}
if (hKeyNames) {
*hKeyNames = NULL;
} else {
SetLastError (ERROR_BAD_ARGUMENTS);
return NULL;
}
// use the greater of Help items or Counter Items to size array
if (dwHelpItems >= dwCounterItems) {
dwLastId = dwHelpItems;
} else {
dwLastId = dwCounterItems;
}
// array size is # of elements (+ 1, since names are "1" based)
// times the size of a pointer
dwArraySize = (dwLastId + 1) * sizeof(LPTSTR);
// allocate string buffer for language ID key string
lpValueNameString = malloc (
lstrlen(NamesKey) * sizeof (TCHAR) +
lstrlen(Slash) * sizeof (TCHAR) +
lstrlen(lpszLangId) * sizeof (TCHAR) +
sizeof (TCHAR));
if (!lpValueNameString) {
lWin32Status = ERROR_OUTOFMEMORY;
goto BNT_BAILOUT;
}
lWin32Status = RegOpenKeyEx ( // get handle to this key in the
hKeyPerflib, // registry
lpszLangId,
RESERVED,
KEY_READ | KEY_WRITE,
hKeyNames);
if (lWin32Status != ERROR_SUCCESS) goto BNT_BAILOUT;
// get size of counter names
dwBufferSize = 0;
lWin32Status = RegQueryValueEx (
*hKeyNames,
Counters,
RESERVED,
&dwValueType,
NULL,
&dwBufferSize);
if (lWin32Status != ERROR_SUCCESS) goto BNT_BAILOUT;
dwCounterSize = dwBufferSize;
// get size of help text
dwBufferSize = 0;
lWin32Status = RegQueryValueEx (
*hKeyNames,
Help,
RESERVED,
&dwValueType,
NULL,
&dwBufferSize);
if (lWin32Status != ERROR_SUCCESS) goto BNT_BAILOUT;
dwHelpSize = dwBufferSize;
// allocate buffer with room for pointer array, counter name
// strings and help name strings
lpReturnValue = malloc (dwArraySize + dwCounterSize + dwHelpSize);
if (!lpReturnValue) {
lWin32Status = ERROR_OUTOFMEMORY;
goto BNT_BAILOUT;
}
// initialize buffer
memset (lpReturnValue, 0, _msize(lpReturnValue));
// initialize pointers into buffer
lpCounterId = lpReturnValue;
lpCounterNames = (LPTSTR)((LPBYTE)lpCounterId + dwArraySize);
lpHelpText = (LPTSTR)((LPBYTE)lpCounterNames + dwCounterSize);
// read counter names into buffer. Counter names will be stored as
// a MULTI_SZ string in the format of "###" "Name"
dwBufferSize = dwCounterSize;
lWin32Status = RegQueryValueEx (
*hKeyNames,
Counters,
RESERVED,
&dwValueType,
(LPVOID)lpCounterNames,
&dwBufferSize);
if (lWin32Status != ERROR_SUCCESS) goto BNT_BAILOUT;
// read explain text into buffer. Counter names will be stored as
// a MULTI_SZ string in the format of "###" "Text..."
dwBufferSize = dwHelpSize;
lWin32Status = RegQueryValueEx (
*hKeyNames,
Help,
RESERVED,
&dwValueType,
(LPVOID)lpHelpText,
&dwBufferSize);
if (lWin32Status != ERROR_SUCCESS) goto BNT_BAILOUT;
// load counter array items, by locating each text string
// in the returned buffer and loading the
// address of it in the corresponding pointer array element.
for (lpThisName = lpCounterNames;
*lpThisName;
lpThisName += (lstrlen(lpThisName)+1) ) {
// first string should be an integer (in decimal digit characters)
// so translate to an integer for use in array element identification
bStatus = StringToInt (lpThisName, &dwThisCounter);
if (!bStatus) {
// error is in GetLastError
goto BNT_BAILOUT; // bad entry
}
// point to corresponding counter name which follows the id number
// string.
lpThisName += (lstrlen(lpThisName)+1);
// and load array element with pointer to string
lpCounterId[dwThisCounter] = lpThisName;
}
// repeat the above for the explain text strings
for (lpThisName = lpHelpText;
*lpThisName;
lpThisName += (lstrlen(lpThisName)+1) ) {
// first string should be an integer (in decimal unicode digits)
bStatus = StringToInt (lpThisName, &dwThisCounter);
if (!bStatus) {
// error is in GetLastError
goto BNT_BAILOUT; // bad entry
}
// point to corresponding counter name
lpThisName += (lstrlen(lpThisName)+1);
// and load array element;
lpCounterId[dwThisCounter] = lpThisName;
}
// if the last item arugment was used, then load the last ID value in it
if (pdwLastItem) *pdwLastItem = dwLastId;
// free the temporary buffer used
if (lpValueNameString) {
free ((LPVOID)lpValueNameString);
}
// exit returning the pointer to the buffer
return lpReturnValue;
BNT_BAILOUT:
if (lWin32Status != ERROR_SUCCESS) {
// if lWin32Status has error, then set last error value to it,
// otherwise assume that last error already has value in it
SetLastError (lWin32Status);
}
// free buffers used by this routine
if (lpValueNameString) {
free ((LPVOID)lpValueNameString);
}
if (lpReturnValue) {
free ((LPVOID)lpReturnValue);
}
return NULL;
} // BuildNameTable
BOOL
GetDriverFromCommandLine (
HKEY hKeyMachine,
LPTSTR *lpDriverName,
HKEY *hDriverPerf,
LPSTR argv[]
)
/*++
GetDriverFromCommandLine
locates the first argument in the command line string (after the
image name) and checks to see if
a) it's there
b) it's the name of a device driver listed in the
Registry\Machine\System\CurrentControlSet\Services key
in the registry and it has a "Performance" subkey
c) that the "First Counter" value under the Performance subkey
is defined.
if all these criteria are true, then the routine returns TRUE and
passes the pointer to the driver name back in the argument. If any
one of them fail, then NULL is returned in the DriverName arg and
the routine returns FALSE
Arguments
lpDriverName
the address of a LPTSTR to recive the pointer to the driver name
hDriverPerf
the key to the driver's performance subkey
Return Value
TRUE if a valid driver was found in the command line
FALSE if not (see above)
--*/
{
LPTSTR lpDriverKey; // buffer to build driver key name in
LPTSTR lpThisChar;
LONG lStatus;
DWORD dwFirstCounter;
DWORD dwSize;
DWORD dwType;
if (!lpDriverName || !hDriverPerf) {
SetLastError (ERROR_BAD_ARGUMENTS);
return FALSE;
}
*lpDriverName = NULL; // initialize to NULL
*hDriverPerf = NULL;
lpThisChar = malloc( MAX_PATH * sizeof(TCHAR));
MultiByteToWideChar( CP_ACP, MB_PRECOMPOSED, argv[0], -1, lpThisChar, MAX_PATH);
if (*lpThisChar) {
// an argument was found so see if it's a driver
lpDriverKey = malloc (MAX_PATH * sizeof (TCHAR));
if (!lpDriverKey) {
SetLastError (ERROR_OUTOFMEMORY);
if ( lpThisChar ) free (lpThisChar);
return FALSE;
}
lstrcpy (lpDriverKey, DriverPathRoot);
lstrcat (lpDriverKey, Slash);
lstrcat (lpDriverKey, lpThisChar);
lstrcat (lpDriverKey, Slash);
lstrcat (lpDriverKey, Performance);
lStatus = RegOpenKeyEx (
hKeyMachine,
lpDriverKey,
RESERVED,
KEY_READ | KEY_WRITE,
hDriverPerf);
if (lStatus == ERROR_SUCCESS) {
//
// this driver has a performance section so see if its
// counters are installed by checking the First Counter
// value key for a valid return. If it returns a value
// then chances are, it has some counters installed, if
// not, then display a message and quit.
//
free (lpDriverKey); // don't need this any more
dwType = 0;
dwSize = sizeof (dwFirstCounter);
lStatus = RegQueryValueEx (
*hDriverPerf,
FirstCounter,
RESERVED,
&dwType,
(LPBYTE)&dwFirstCounter,
&dwSize);
if (lStatus == ERROR_SUCCESS) {
// counter names are installed so return success
*lpDriverName = lpThisChar;
SetLastError (ERROR_SUCCESS);
if ( lpThisChar ) free (lpThisChar);
return TRUE;
} else {
SetLastError (ERROR_BADKEY);
if ( lpThisChar ) free (lpThisChar);
return FALSE;
}
} else { // key not found
SetLastError (lStatus);
free (lpDriverKey);
if ( lpThisChar ) free (lpThisChar);
return FALSE;
}
} else {
SetLastError (ERROR_INVALID_PARAMETER);
if ( lpThisChar ) free (lpThisChar);
return FALSE;
}
}
LONG
FixNames (
HANDLE hKeyLang,
LPTSTR *lpOldNameTable,
IN LPTSTR lpszLangId, // unicode value of Language subkey
DWORD dwLastItem,
DWORD dwFirstNameToRemove,
DWORD dwLastNameToRemove
)
{
LONG lStatus;
LPTSTR lpNameBuffer = NULL;
LPTSTR lpHelpBuffer = NULL;
DWORD dwTextIndex, dwSize;
LPTSTR lpNextHelpText;
LPTSTR lpNextNameText;
// allocate space for the array of new text it will point
// into the text buffer returned in the lpOldNameTable buffer)
lpNameBuffer = malloc (_msize(lpOldNameTable));
lpHelpBuffer = malloc (_msize(lpOldNameTable));
if (!lpNameBuffer || !lpHelpBuffer) {
lStatus = ERROR_OUTOFMEMORY;
return lStatus;
}
// remove this driver's counters from array
for (dwTextIndex = dwFirstNameToRemove;
dwTextIndex <= dwLastNameToRemove;
dwTextIndex++) {
if (dwTextIndex > dwLastItem)
break;
lpOldNameTable[dwTextIndex] = NULL;
}
lpNextHelpText = lpHelpBuffer;
lpNextNameText = lpNameBuffer;
// build new Multi_SZ strings from New Table
for (dwTextIndex = 0; dwTextIndex <= dwLastItem; dwTextIndex++){
if (lpOldNameTable[dwTextIndex]) {
// if there's a text string at that index, then ...
if (dwTextIndex & 0x1) { // ODD number == Help Text
lpNextHelpText +=
_stprintf (lpNextHelpText, TEXT("%d"), dwTextIndex) + 1;
lpNextHelpText +=
_stprintf (lpNextHelpText, TEXT("%s"),
lpOldNameTable[dwTextIndex]) + 1;
if (dwTextIndex > dwLastHelp){
dwLastHelp = dwTextIndex;
}
} else { // EVEN number == counter name text
lpNextNameText +=
_stprintf (lpNextNameText, TEXT("%d"), dwTextIndex) + 1;
lpNextNameText +=
_stprintf (lpNextNameText, TEXT("%s"),
lpOldNameTable[dwTextIndex]) + 1;
if (dwTextIndex > dwLastCounter){
dwLastCounter = dwTextIndex;
}
}
}
} // for dwTextIndex
// add MULTI_SZ terminating NULL
*lpNextNameText++ = TEXT ('\0');
*lpNextHelpText++ = TEXT ('\0');
// update counter name text buffer
dwSize = (DWORD)((LPBYTE)lpNextNameText - (LPBYTE)lpNameBuffer);
lStatus = RegSetValueEx (
hKeyLang,
Counters,
RESERVED,
REG_MULTI_SZ,
(LPBYTE)lpNameBuffer,
dwSize);
if (lStatus != ERROR_SUCCESS) {
// printf (GetFormatResource(UC_UNABLELOADLANG),
// Counters, lpLangName, lStatus);
goto UCN_FinishLang;
}
dwSize = (DWORD)((LPBYTE)lpNextHelpText - (LPBYTE)lpHelpBuffer);
lStatus = RegSetValueEx (
hKeyLang,
Help,
RESERVED,
REG_MULTI_SZ,
(LPBYTE)lpHelpBuffer,
dwSize);
if (lStatus != ERROR_SUCCESS) {
// printf (GetFormatResource(UC_UNABLELOADLANG),
// Help, lpLangName, lStatus);
goto UCN_FinishLang;
}
UCN_FinishLang:
free (lpNameBuffer);
free (lpHelpBuffer);
free (lpOldNameTable);
RegCloseKey (hKeyLang);
return lStatus;
}
LONG
UnloadCounterNames (
HKEY hKeyMachine,
HKEY hDriverPerf,
LPTSTR lpDriverName
)
/*++
UnloadCounterNames
removes the names and explain text for the driver referenced by
hDriverPerf and updates the first and last counter values accordingly
update process:
- set "updating" flag under Perflib to name of driver being modified
- FOR each language under perflib key
-- load current counter names and explain text into array of
pointers
-- look at all drivers and copy their names and text into a new
buffer adjusting for the removed counter's entries keeping
track of the lowest entry copied. (the names for the driver
to be removed will not be copied, of course)
-- update each driver's "first" and "last" index values
-- copy all other entries from 0 to the lowest copied (i.e. the
system counters)
-- build a new MULIT_SZ string of help text and counter names
-- load new strings into registry
- update perflibl "last" counters
- delete updating flag
******************************************************
* *
* NOTE: FUNDAMENTAL ASSUMPTION..... *
* *
* this routine assumes that: *
* *
* ALL COUNTER NAMES are even numbered and *
* ALL HELP TEXT STRINGS are odd numbered *
* *
******************************************************
Arguments
hKeyMachine
handle to HKEY_LOCAL_MACHINE node of registry on system to
remove counters from
hDrivefPerf
handle to registry key of driver to be de-installed
lpDriverName
name of driver being de-installed
Return Value
DOS Error code.
ERROR_SUCCESS if all went OK
error value if not.
--*/
{
HKEY hPerflib;
HKEY hServices;
HKEY hKeyLang;
LONG lStatus;
DWORD dwLangIndex;
DWORD dwSize;
DWORD dwType;
DWORD dwLastItem;
DWORD dwRemLastDriverCounter;
DWORD dwRemFirstDriverCounter;
DWORD dwRemLastDriverHelp;
DWORD dwRemFirstDriverHelp;
DWORD dwFirstNameToRemove;
DWORD dwLastNameToRemove;
LPTSTR *lpOldNameTable;
LPTSTR lpLangName = NULL;
LPTSTR lpThisDriver = NULL;
BOOL bPerflibUpdated = FALSE;
BOOL bDriversShuffled = FALSE;
DWORD dwBufferSize; // size of total buffer in bytes
TCHAR CounterNameBuffer [40];
TCHAR HelpNameBuffer [40];
lStatus = RegOpenKeyEx (
hKeyMachine,
DriverPathRoot,
RESERVED,
KEY_READ | KEY_WRITE,
&hServices);
if (lStatus != ERROR_SUCCESS) {
return lStatus;
}
// open registry handle to perflib key
lStatus = RegOpenKeyEx (
hKeyMachine,
NamesKey,
RESERVED,
KEY_READ | KEY_WRITE,
&hPerflib);
if (lStatus != ERROR_SUCCESS) {
return lStatus;
}
// check & set Busy flag...
lStatus = RegQueryValueEx (
hPerflib,
Busy,
RESERVED,
&dwType,
NULL,
&dwSize);
if (lStatus == ERROR_SUCCESS) { // perflib is in use at the moment
return ERROR_BUSY;
}
lStatus = RegSetValueEx (
hPerflib,
Busy,
RESERVED,
REG_SZ,
(LPBYTE)lpDriverName,
lstrlen(lpDriverName) * sizeof(TCHAR));
if (lStatus != ERROR_SUCCESS) {
RegCloseKey (hPerflib);
return lStatus;
}
// query registry to get number of Explain text items
dwBufferSize = sizeof (dwHelpItems);
lStatus = RegQueryValueEx (
hPerflib,
LastHelp,
RESERVED,
&dwType,
(LPBYTE)&dwHelpItems,
&dwBufferSize);
if ((lStatus != ERROR_SUCCESS) || (dwType != REG_DWORD)) {
RegCloseKey (hPerflib);
return lStatus;
}
// query registry to get number of counter and object name items
dwBufferSize = sizeof (dwCounterItems);
lStatus = RegQueryValueEx (
hPerflib,
LastCounter,
RESERVED,
&dwType,
(LPBYTE)&dwCounterItems,
&dwBufferSize);
if ((lStatus != ERROR_SUCCESS) || (dwType != REG_DWORD)) {
RegCloseKey (hPerflib);
return lStatus;
}
// query registry to get PerfLib system version
dwBufferSize = sizeof (dwSystemVersion);
lStatus = RegQueryValueEx (
hPerflib,
VersionStr,
RESERVED,
&dwType,
(LPBYTE)&dwSystemVersion,
&dwBufferSize);
if ((lStatus != ERROR_SUCCESS) || (dwType != REG_DWORD)) {
// Key not there, must be NT 1.0 version
dwSystemVersion = OLD_VERSION;
}
if ( dwSystemVersion != OLD_VERSION )
{
// ERROR. The caller should check the version before calling me.
// let return busy for now...
return(ERROR_BUSY);
}
// allocate temporary String buffer
lpLangName = malloc (MAX_PATH * sizeof(TCHAR));
lpThisDriver = malloc (MAX_PATH * sizeof(TCHAR));
if (!lpLangName || !lpThisDriver) {
lStatus = ERROR_OUTOFMEMORY;
goto UCN_ExitPoint;
}
// Get the values that are in use by the driver to be removed
dwSize = sizeof (dwRemLastDriverCounter);
lStatus = RegQueryValueEx (
hDriverPerf,
LastCounter,
RESERVED,
&dwType,
(LPBYTE)&dwRemLastDriverCounter,
&dwSize);
if (lStatus != ERROR_SUCCESS) {
goto UCN_ExitPoint;
}
dwSize = sizeof (dwRemFirstDriverCounter);
lStatus = RegQueryValueEx (
hDriverPerf,
FirstCounter,
RESERVED,
&dwType,
(LPBYTE)&dwRemFirstDriverCounter,
&dwSize);
if (lStatus != ERROR_SUCCESS) {
goto UCN_ExitPoint;
}
dwSize = sizeof (dwRemLastDriverHelp);
lStatus = RegQueryValueEx (
hDriverPerf,
LastHelp,
RESERVED,
&dwType,
(LPBYTE)&dwRemLastDriverHelp,
&dwSize);
if (lStatus != ERROR_SUCCESS) {
goto UCN_ExitPoint;
}
dwSize = sizeof (dwRemFirstDriverHelp);
lStatus = RegQueryValueEx (
hDriverPerf,
FirstHelp,
RESERVED,
&dwType,
(LPBYTE)&dwRemFirstDriverHelp,
&dwSize);
if (lStatus != ERROR_SUCCESS) {
goto UCN_ExitPoint;
}
// get the first and last counters to define block of names used
// by this device
dwFirstNameToRemove = (dwRemFirstDriverCounter <= dwRemFirstDriverHelp ?
dwRemFirstDriverCounter : dwRemFirstDriverHelp);
dwLastNameToRemove = (dwRemLastDriverCounter >= dwRemLastDriverHelp ?
dwRemLastDriverCounter : dwRemLastDriverHelp);
dwLastCounter = dwLastHelp = 0;
// do each language under perflib
for (dwLangIndex = 0, dwSize = _msize(lpLangName);
(RegEnumKey(hPerflib, dwLangIndex, lpLangName, dwSize)) == ERROR_SUCCESS;
dwLangIndex++, dwSize = _msize(lpLangName)) {
lpOldNameTable = BuildNameTable (hPerflib, lpLangName,
&dwLastItem, &hKeyLang, CounterNameBuffer, HelpNameBuffer);
if (lpOldNameTable) {
if (!FixNames (
hKeyLang,
lpOldNameTable,
lpLangName,
dwLastItem,
dwFirstNameToRemove,
dwLastNameToRemove)) {
bPerflibUpdated = TRUE;
}
} else { // unable to unload names for this language
// display error message
}
} // end for (more languages)
if (bPerflibUpdated) {
// update perflib's "last" values
dwSize = sizeof (dwLastCounter);
lStatus = RegSetValueEx (
hPerflib,
LastCounter,
RESERVED,
REG_DWORD,
(LPBYTE)&dwLastCounter,
dwSize);
dwSize = sizeof (dwLastHelp);
lStatus = RegSetValueEx (
hPerflib,
LastHelp,
RESERVED,
REG_DWORD,
(LPBYTE)&dwLastHelp,
dwSize);
// update "driver"s values (i.e. remove them)
RegDeleteValue (hDriverPerf, FirstCounter);
RegDeleteValue (hDriverPerf, LastCounter);
RegDeleteValue (hDriverPerf, FirstHelp);
RegDeleteValue (hDriverPerf, LastHelp);
}
UCN_ExitPoint:
RegDeleteValue (hPerflib, Busy);
RegCloseKey (hPerflib);
RegCloseKey (hServices);
if (lpLangName) free (lpLangName);
if (lpThisDriver) free (lpThisDriver);
return lStatus;
}
BOOL FAR PASCAL unlodctr(DWORD argc,LPSTR argv[], LPSTR *ppszResult )
/*++
main
entry point to Counter Name Unloader
Arguments
argc
# of command line arguments present
argv
array of pointers to command line strings
(note that these are obtained from the GetCommandLine function in
order to work with both UNICODE and ANSI strings.)
ReturnValue
0 (ERROR_SUCCESS) if command was processed
Non-Zero if command error was detected.
--*/
{
LPTSTR lpDriverName; // name of driver to delete from perflib
HKEY hDriverPerf; // handle to performance sub-key of driver
DWORD dwStatus; // return status of fn. calls
*ppszResult = achBuff;
wsprintfA( achBuff, "{\"NO_ERROR\"}");
if (!GetDriverFromCommandLine (
HKEY_LOCAL_MACHINE, &lpDriverName, &hDriverPerf, argv)) {
// error message was printed in routine if there was an error
wsprintfA( achBuff,"{\"ERROR\"}");
return (FALSE);
}
// removes names and explain text for driver in lpDriverName
// displays error messages for errors encountered
dwStatus = (DWORD)UnloadCounterNames (HKEY_LOCAL_MACHINE,
hDriverPerf, lpDriverName);
RegCloseKey (hDriverPerf);
if ( dwStatus != ERROR_SUCCESS )
{
wsprintfA( achBuff,"{\"ERROR\"}");
}
return (dwStatus==ERROR_SUCCESS);
}
|