reactos/ntoskrnl/ex/sysinfo.c

   1 /* $Id: sysinfo.c,v 1.18 2002/10/01 19:27:21 chorns Exp $
   2  *
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS kernel
   5  * FILE:            ntoskrnl/ex/sysinfo.c
   6  * PURPOSE:         System information functions
   7  * PROGRAMMER:      David Welch (welch@mcmail.com)
   8  * UPDATE HISTORY:
   9  *                  Created 22/05/98
  10  */
  11
  12 /* INCLUDES *****************************************************************/
  13
  14 #include <ddk/ntddk.h>
  15 #include <ddk/exfuncs.h>
  16 #include <ddk/halfuncs.h>
  17 #include <ddk/iofuncs.h>
  18 #include <internal/ex.h>
  19 #include <internal/ldr.h>
  20 #include <internal/safe.h>
  21
  22 #include <internal/debug.h>
  23
  24 extern ULONG NtGlobalFlag; /* FIXME: it should go in a ddk/?.h */
  25
  26 /* FUNCTIONS *****************************************************************/
  27
  28 NTSTATUS STDCALL
  29 NtQuerySystemEnvironmentValue (IN       PUNICODE_STRING UnsafeName,
  30                                OUT      PVOID           UnsafeValue,
  31                                IN       ULONG           Length,
  32                                IN OUT   PULONG          UnsafeReturnLength)
  33 {
  34   NTSTATUS Status;
  35   ANSI_STRING AName;
  36   UNICODE_STRING WName;
  37   BOOLEAN Result;
  38   PCH Value;
  39   ANSI_STRING AValue;
  40   UNICODE_STRING WValue;
  41   ULONG ReturnLength;
  42
  43   /*
  44    * Copy the name to kernel space if necessary and convert it to ANSI.
  45    */
  46   if (ExGetPreviousMode() != KernelMode)
  47     {
  48       Status = RtlCaptureUnicodeString(&WName, UnsafeName);
  49       if (!NT_SUCCESS(Status))
  50         {
  51           return(Status);
  52         }
  53       Status = RtlUnicodeStringToAnsiString(&AName, UnsafeName, TRUE);
  54       if (!NT_SUCCESS(Status))
  55         {
  56           return(Status);
  57         }
  58     }
  59   else
  60     {
  61       Status = RtlUnicodeStringToAnsiString(&AName, UnsafeName, TRUE);
  62       if (!NT_SUCCESS(Status))
  63         {
  64           return(Status);
  65         }
  66     }
  67
  68   /*
  69    * Create a temporary buffer for the value
  70    */
  71   Value = ExAllocatePool(NonPagedPool, Length);
  72   if (Value == NULL)
  73     {
  74       RtlFreeAnsiString(&AName);
  75       if (ExGetPreviousMode() != KernelMode)
  76         {
  77           RtlFreeUnicodeString(&WName);
  78         }
  79       return(STATUS_NO_MEMORY);
  80     }
  81
  82   /*
  83    * Get the environment variable
  84    */
  85   Result = HalGetEnvironmentVariable(AName.Buffer, Value, Length);
  86   if (!Result)
  87     {
  88       RtlFreeAnsiString(&AName);
  89       if (ExGetPreviousMode() != KernelMode)
  90         {
  91           RtlFreeUnicodeString(&WName);
  92         }
  93       ExFreePool(Value);
  94       return(STATUS_UNSUCCESSFUL);
  95     }
  96
  97   /*
  98    * Convert the result to UNICODE.
  99    */
 100   RtlInitAnsiString(&AValue, Value);
 101   Status = RtlAnsiStringToUnicodeString(&WValue, &AValue, TRUE);
 102   if (!NT_SUCCESS(Status))
 103     {
 104       RtlFreeAnsiString(&AName);
 105       if (ExGetPreviousMode() != KernelMode)
 106         {
 107           RtlFreeUnicodeString(&WName);
 108         }
 109       ExFreePool(Value);
 110       return(Status);
 111     }
 112   ReturnLength = WValue.Length;
 113
 114   /*
 115    * Copy the result back to the caller.
 116    */
 117   if (ExGetPreviousMode() != KernelMode)
 118     {
 119       Status = MmCopyToCaller(UnsafeValue, WValue.Buffer, ReturnLength);
 120       if (!NT_SUCCESS(Status))
 121         {
 122           RtlFreeAnsiString(&AName);
 123           if (ExGetPreviousMode() != KernelMode)
 124             {
 125               RtlFreeUnicodeString(&WName);
 126             }
 127           ExFreePool(Value);
 128           RtlFreeUnicodeString(&WValue);
 129           return(Status);
 130         }
 131
 132       Status = MmCopyToCaller(UnsafeReturnLength, &ReturnLength,
 133                               sizeof(ULONG));
 134       if (!NT_SUCCESS(Status))
 135         {
 136           RtlFreeAnsiString(&AName);
 137           if (ExGetPreviousMode() != KernelMode)
 138             {
 139               RtlFreeUnicodeString(&WName);
 140             }
 141           ExFreePool(Value);
 142           RtlFreeUnicodeString(&WValue);
 143           return(Status);
 144         }
 145     }
 146   else
 147     {
 148       memcpy(UnsafeValue, WValue.Buffer, ReturnLength);
 149       memcpy(UnsafeReturnLength, &ReturnLength, sizeof(ULONG));
 150     }
 151
 152   /*
 153    * Free temporary buffers.
 154    */
 155   RtlFreeAnsiString(&AName);
 156   if (ExGetPreviousMode() != KernelMode)
 157     {
 158       RtlFreeUnicodeString(&WName);
 159     }
 160   ExFreePool(Value);
 161   RtlFreeUnicodeString(&WValue);
 162
 163   return(STATUS_SUCCESS);
 164 }
 165
 166
 167 NTSTATUS STDCALL
 168 NtSetSystemEnvironmentValue (IN PUNICODE_STRING UnsafeName,
 169                              IN PUNICODE_STRING UnsafeValue)
 170 {
 171   UNICODE_STRING WName;
 172   ANSI_STRING AName;
 173   UNICODE_STRING WValue;
 174   ANSI_STRING AValue;
 175   BOOLEAN Result;
 176   NTSTATUS Status;
 177
 178   /*
 179    * Check for required privilege.
 180    */
 181   /* FIXME: Not implemented. */
 182
 183   /*
 184    * Copy the name to kernel space if necessary and convert it to ANSI.
 185    */
 186   if (ExGetPreviousMode() != KernelMode)
 187     {
 188       Status = RtlCaptureUnicodeString(&WName, UnsafeName);
 189       if (!NT_SUCCESS(Status))
 190         {
 191           return(Status);
 192         }
 193       Status = RtlUnicodeStringToAnsiString(&AName, UnsafeName, TRUE);
 194       if (!NT_SUCCESS(Status))
 195         {
 196           return(Status);
 197         }
 198     }
 199   else
 200     {
 201       Status = RtlUnicodeStringToAnsiString(&AName, UnsafeName, TRUE);
 202       if (!NT_SUCCESS(Status))
 203         {
 204           return(Status);
 205         }
 206     }
 207
 208   /*
 209    * Copy the value to kernel space and convert to ANSI.
 210    */
 211   if (ExGetPreviousMode() != KernelMode)
 212     {
 213       Status = RtlCaptureUnicodeString(&WValue, UnsafeValue);
 214       if (!NT_SUCCESS(Status))
 215         {
 216           RtlFreeUnicodeString(&WName);
 217           RtlFreeAnsiString(&AName);
 218           return(Status);
 219         }
 220       Status = RtlUnicodeStringToAnsiString(&AValue, UnsafeValue, TRUE);
 221       if (!NT_SUCCESS(Status))
 222         {
 223           RtlFreeUnicodeString(&WName);
 224           RtlFreeAnsiString(&AName);
 225           RtlFreeUnicodeString(&WValue);
 226           return(Status);
 227         }
 228     }
 229   else
 230     {
 231       Status = RtlUnicodeStringToAnsiString(&AValue, UnsafeValue, TRUE);
 232       if (!NT_SUCCESS(Status))
 233         {
 234           RtlFreeAnsiString(&AName);
 235           return(Status);
 236         }
 237     }
 238
 239   /*
 240    * Set the environment variable
 241    */
 242   Result = HalSetEnvironmentVariable(AName.Buffer, AValue.Buffer);
 243
 244   /*
 245    * Free everything and return status.
 246    */
 247   RtlFreeAnsiString(&AName);
 248   RtlFreeAnsiString(&AValue);
 249   if (ExGetPreviousMode() != KernelMode)
 250     {
 251       RtlFreeUnicodeString(&WName);
 252       RtlFreeUnicodeString(&WValue);
 253     }
 254
 255   if (!Result)
 256     {
 257       return(STATUS_UNSUCCESSFUL);
 258     }
 259   return(STATUS_SUCCESS);
 260 }
 261
 262
 263 /* --- Query/Set System Information --- */
 264
 265
 266 /*
 267  * NOTE: QSI_DEF(n) and SSI_DEF(n) define _cdecl function symbols
 268  * so the stack is popped only in one place on x86 platform.
 269  */
 270 #define QSI_USE(n) QSI##n
 271 #define QSI_DEF(n) \
 272 static NTSTATUS QSI_USE(n) (PVOID Buffer, ULONG Size, PULONG ReqSize)
 273
 274 #define SSI_USE(n) SSI##n
 275 #define SSI_DEF(n) \
 276 static NTSTATUS SSI_USE(n) (PVOID Buffer, ULONG Size)
 277
 278 /* Class 0 - Basic Information */
 279 QSI_DEF(SystemBasicInformation)
 280 {
 281         PSYSTEM_BASIC_INFORMATION Sbi
 282                 = (PSYSTEM_BASIC_INFORMATION) Buffer;
 283
 284         *ReqSize = sizeof (SYSTEM_BASIC_INFORMATION);
 285         /*
 286          * Check user buffer's size
 287          */
 288         if (Size < sizeof (SYSTEM_BASIC_INFORMATION))
 289         {
 290                 return (STATUS_INFO_LENGTH_MISMATCH);
 291         }
 292
 293         Sbi->Reserved = 0;
 294         Sbi->TimerResolution = 0; /* FIXME */
 295         Sbi->PageSize = PAGE_SIZE; /* FIXME: it should be PAGE_SIZE */
 296         Sbi->NumberOfPhysicalPages = 0; /* FIXME */
 297         Sbi->LowestPhysicalPageNumber = 0; /* FIXME */
 298         Sbi->HighestPhysicalPageNumber = 0; /* FIXME */
 299         Sbi->AllocationGranularity = 65536; /* hard coded on Intel? */
 300         Sbi->MinimumUserModeAddress = 0; /* FIXME */
 301         Sbi->MaximumUserModeAddress = 0; /* FIXME */
 302         Sbi->ActiveProcessorsAffinityMask = 0x00000001; /* FIXME */
 303         Sbi->NumberOfProcessors = 1; /* FIXME */
 304
 305         return (STATUS_SUCCESS);
 306 }
 307
 308 /* Class 1 - Processor Information */
 309 QSI_DEF(SystemProcessorInformation)
 310 {
 311         PSYSTEM_PROCESSOR_INFORMATION Spi
 312                 = (PSYSTEM_PROCESSOR_INFORMATION) Buffer;
 313
 314         *ReqSize = sizeof (SYSTEM_PROCESSOR_INFORMATION);
 315         /*
 316          * Check user buffer's size
 317          */
 318         if (Size < sizeof (SYSTEM_PROCESSOR_INFORMATION))
 319         {
 320                 return (STATUS_INFO_LENGTH_MISMATCH);
 321         }
 322
 323         /* FIXME: add CPU type detection code */
 324         Spi->ProcessorArchitecture = 0; /* FIXME */
 325         Spi->ProcessorLevel = 0; /* FIXME */
 326         Spi->ProcessorRevision = 0; /* FIXME */
 327         Spi->Reserved = 0;
 328         Spi->ProcessorFeatureBits = 0x00000000; /* FIXME */
 329
 330         return (STATUS_SUCCESS);
 331 }
 332
 333 /* Class 2 - Performance Information */
 334 QSI_DEF(SystemPerformanceInformation)
 335 {
 336         PSYSTEM_PERFORMANCE_INFO Spi
 337                 = (PSYSTEM_PERFORMANCE_INFO) Buffer;
 338
 339         *ReqSize = sizeof (SYSTEM_PERFORMANCE_INFO);
 340         /*
 341          * Check user buffer's size
 342          */
 343         if (Size < sizeof (SYSTEM_PERFORMANCE_INFO))
 344         {
 345                 return (STATUS_INFO_LENGTH_MISMATCH);
 346         }
 347
 348         Spi->IdleProcessorTime.QuadPart = 0; /* FIXME */
 349         Spi->IoReadTransferCount.QuadPart = 0; /* FIXME */
 350         Spi->IoWriteTransferCount.QuadPart = 0; /* FIXME */
 351         Spi->IoOtherTransferCount.QuadPart = 0; /* FIXME */
 352         Spi->IoReadOperationCount = 0; /* FIXME */
 353         Spi->IoWriteOperationCount = 0; /* FIXME */
 354         Spi->IoOtherOperationCount = 0; /* FIXME */
 355         Spi->AvailablePages = 0; /* FIXME */
 356         Spi->CommitedPages = 0; /* FIXME */
 357         Spi->CommitLimit = 0; /* FIXME */
 358         Spi->PeakCommitment = 0; /* FIXME */
 359         Spi->PageFaultCount = 0; /* FIXME */
 360         Spi->CopyOnWriteCount = 0; /* FIXME */
 361         Spi->TransitionCount = 0; /* FIXME */
 362         Spi->CacheTransitionCount = 0; /* FIXME */
 363         Spi->DemandZeroCount = 0; /* FIXME */
 364         Spi->PageReadCount = 0; /* FIXME */
 365         Spi->PageReadIoCount = 0; /* FIXME */
 366         Spi->CacheReadCount = 0; /* FIXME */
 367         Spi->CacheIoCount = 0; /* FIXME */
 368         Spi->DirtyPagesWriteCount = 0; /* FIXME */
 369         Spi->DirtyWriteIoCount = 0; /* FIXME */
 370         Spi->MappedPagesWriteCount = 0; /* FIXME */
 371         Spi->MappedWriteIoCount = 0; /* FIXME */
 372         Spi->PagedPoolPages = 0; /* FIXME */
 373         Spi->NonPagedPoolPages = 0; /* FIXME */
 374         Spi->Unknown6 = 0; /* FIXME */
 375         Spi->Unknown7 = 0; /* FIXME */
 376         Spi->Unknown8 = 0; /* FIXME */
 377         Spi->Unknown9 = 0; /* FIXME */
 378         Spi->MmTotalSystemFreePtes = 0; /* FIXME */
 379         Spi->MmSystemCodepage = 0; /* FIXME */
 380         Spi->MmTotalSystemDriverPages = 0; /* FIXME */
 381         Spi->MmTotalSystemCodePages = 0; /* FIXME */
 382         Spi->Unknown10 = 0; /* FIXME */
 383         Spi->Unknown11 = 0; /* FIXME */
 384         Spi->Unknown12 = 0; /* FIXME */
 385         Spi->MmSystemCachePage = 0; /* FIXME */
 386         Spi->MmPagedPoolPage = 0; /* FIXME */
 387         Spi->MmSystemDriverPage = 0; /* FIXME */
 388         Spi->CcFastReadNoWait = 0; /* FIXME */
 389         Spi->CcFastReadWait = 0; /* FIXME */
 390         Spi->CcFastReadResourceMiss = 0; /* FIXME */
 391         Spi->CcFastReadNotPossible = 0; /* FIXME */
 392         Spi->CcFastMdlReadNoWait = 0; /* FIXME */
 393         Spi->CcFastMdlReadWait = 0; /* FIXME */
 394         Spi->CcFastMdlReadResourceMiss = 0; /* FIXME */
 395         Spi->CcFastMdlReadNotPossible = 0; /* FIXME */
 396         Spi->CcMapDataNoWait = 0; /* FIXME */
 397         Spi->CcMapDataWait = 0; /* FIXME */
 398         Spi->CcMapDataNoWaitMiss = 0; /* FIXME */
 399         Spi->CcMapDataWaitMiss = 0; /* FIXME */
 400         Spi->CcPinMappedDataCount = 0; /* FIXME */
 401         Spi->CcPinReadNoWait = 0; /* FIXME */
 402         Spi->CcPinReadWait = 0; /* FIXME */
 403         Spi->CcPinReadNoWaitMiss = 0; /* FIXME */
 404         Spi->CcPinReadWaitMiss = 0; /* FIXME */
 405         Spi->CcCopyReadNoWait = 0; /* FIXME */
 406         Spi->CcCopyReadWait = 0; /* FIXME */
 407         Spi->CcCopyReadNoWaitMiss = 0; /* FIXME */
 408         Spi->CcCopyReadWaitMiss = 0; /* FIXME */
 409         Spi->CcMdlReadNoWait = 0; /* FIXME */
 410         Spi->CcMdlReadWait = 0; /* FIXME */
 411         Spi->CcMdlReadNoWaitMiss = 0; /* FIXME */
 412         Spi->CcMdlReadWaitMiss = 0; /* FIXME */
 413         Spi->CcReadaheadIos = 0; /* FIXME */
 414         Spi->CcLazyWriteIos = 0; /* FIXME */
 415         Spi->CcLazyWritePages = 0; /* FIXME */
 416         Spi->CcDataFlushes = 0; /* FIXME */
 417         Spi->CcDataPages = 0; /* FIXME */
 418         Spi->ContextSwitches = 0; /* FIXME */
 419         Spi->Unknown13 = 0; /* FIXME */
 420         Spi->Unknown14 = 0; /* FIXME */
 421         Spi->SystemCalls = 0; /* FIXME */
 422
 423         return (STATUS_SUCCESS);
 424 }
 425
 426 /* Class 3 - Time Of Day Information */
 427 QSI_DEF(SystemTimeOfDayInformation)
 428 {
 429         PSYSTEM_TIMEOFDAY_INFORMATION Sti
 430                 = (PSYSTEM_TIMEOFDAY_INFORMATION) Buffer;
 431
 432         *ReqSize = sizeof (SYSTEM_TIMEOFDAY_INFORMATION);
 433         /*
 434          * Check user buffer's size
 435          */
 436         if (Size < sizeof (SYSTEM_TIMEOFDAY_INFORMATION))
 437         {
 438                 return (STATUS_INFO_LENGTH_MISMATCH);
 439         }
 440
 441         Sti->BootTime.QuadPart = 0;     /* FIXME */
 442         Sti->CurrentTime.QuadPart = 0;  /* FIXME */
 443         Sti->TimeZoneBias.QuadPart = 0; /* FIXME */
 444         Sti->TimeZoneId = 0;            /* FIXME */
 445         Sti->Reserved = 0;              /* FIXME */
 446
 447         return (STATUS_SUCCESS);
 448 }
 449
 450 /* Class 4 - Path Information */
 451 QSI_DEF(SystemPathInformation)
 452 {
 453         /* FIXME: QSI returns STATUS_BREAKPOINT. Why? */
 454         return (STATUS_BREAKPOINT);
 455 }
 456
 457 /* Class 5 - Process Information */
 458 QSI_DEF(SystemProcessInformation)
 459 {
 460         /* FIXME: scan the process+thread list */
 461         return (STATUS_NOT_IMPLEMENTED);
 462 }
 463
 464 /* Class 6 - Call Count Information */
 465 QSI_DEF(SystemCallCountInformation)
 466 {
 467         /* FIXME */
 468         return (STATUS_NOT_IMPLEMENTED);
 469 }
 470
 471 /* Class 7 - Device Information */
 472 QSI_DEF(SystemDeviceInformation)
 473 {
 474         PSYSTEM_DEVICE_INFORMATION Sdi
 475                 = (PSYSTEM_DEVICE_INFORMATION) Buffer;
 476         PCONFIGURATION_INFORMATION ConfigInfo;
 477
 478         *ReqSize = sizeof (SYSTEM_DEVICE_INFORMATION);
 479         /*
 480          * Check user buffer's size
 481          */
 482         if (Size < sizeof (SYSTEM_DEVICE_INFORMATION))
 483         {
 484                 return (STATUS_INFO_LENGTH_MISMATCH);
 485         }
 486
 487         ConfigInfo = IoGetConfigurationInformation ();
 488
 489         Sdi->NumberOfDisks = ConfigInfo->DiskCount;
 490         Sdi->NumberOfFloppies = ConfigInfo->FloppyCount;
 491         Sdi->NumberOfCdRoms = ConfigInfo->CDRomCount;
 492         Sdi->NumberOfTapes = ConfigInfo->TapeCount;
 493         Sdi->NumberOfSerialPorts = ConfigInfo->SerialCount;
 494         Sdi->NumberOfParallelPorts = ConfigInfo->ParallelCount;
 495
 496         return (STATUS_SUCCESS);
 497 }
 498
 499 /* Class 8 - Processor Performance Information */
 500 QSI_DEF(SystemProcessorPerformanceInformation)
 501 {
 502         /* FIXME */
 503         return (STATUS_NOT_IMPLEMENTED);
 504 }
 505
 506 /* Class 9 - Flags Information */
 507 QSI_DEF(SystemFlagsInformation)
 508 {
 509         if (sizeof (SYSTEM_FLAGS_INFORMATION) != Size)
 510         {
 511                 * ReqSize = sizeof (SYSTEM_FLAGS_INFORMATION);
 512                 return (STATUS_INFO_LENGTH_MISMATCH);
 513         }
 514         ((PSYSTEM_FLAGS_INFORMATION) Buffer)->Flags = NtGlobalFlag;
 515         return (STATUS_SUCCESS);
 516 }
 517
 518 SSI_DEF(SystemFlagsInformation)
 519 {
 520         if (sizeof (SYSTEM_FLAGS_INFORMATION) != Size)
 521         {
 522                 return (STATUS_INFO_LENGTH_MISMATCH);
 523         }
 524         NtGlobalFlag = ((PSYSTEM_FLAGS_INFORMATION) Buffer)->Flags;
 525         return (STATUS_SUCCESS);
 526 }
 527
 528 /* Class 10 - Call Time Information */
 529 QSI_DEF(SystemCallTimeInformation)
 530 {
 531         /* FIXME */
 532         return (STATUS_NOT_IMPLEMENTED);
 533 }
 534
 535 /* Class 11 - Module Information */
 536 QSI_DEF(SystemModuleInformation)
 537 {
 538         return LdrpQueryModuleInformation(Buffer, Size, ReqSize);
 539 }
 540
 541 /* Class 12 - Locks Information */
 542 QSI_DEF(SystemLocksInformation)
 543 {
 544         /* FIXME */
 545         return (STATUS_NOT_IMPLEMENTED);
 546 }
 547
 548 /* Class 13 - Stack Trace Information */
 549 QSI_DEF(SystemStackTraceInformation)
 550 {
 551         /* FIXME */
 552         return (STATUS_NOT_IMPLEMENTED);
 553 }
 554
 555 /* Class 14 - Paged Pool Information */
 556 QSI_DEF(SystemPagedPoolInformation)
 557 {
 558         /* FIXME */
 559         return (STATUS_NOT_IMPLEMENTED);
 560 }
 561
 562 /* Class 15 - Non Paged Pool Information */
 563 QSI_DEF(SystemNonPagedPoolInformation)
 564 {
 565         /* FIXME */
 566         return (STATUS_NOT_IMPLEMENTED);
 567 }
 568
 569 /* Class 16 - Handle Information */
 570 QSI_DEF(SystemHandleInformation)
 571 {
 572         /* FIXME */
 573         return (STATUS_NOT_IMPLEMENTED);
 574 }
 575
 576 /* Class 17 -  Information */
 577 QSI_DEF(SystemObjectInformation)
 578 {
 579         /* FIXME */
 580         return (STATUS_NOT_IMPLEMENTED);
 581 }
 582
 583 /* Class 18 -  Information */
 584 QSI_DEF(SystemPageFileInformation)
 585 {
 586         /* FIXME */
 587         return (STATUS_NOT_IMPLEMENTED);
 588 }
 589
 590 /* Class 19 - Vdm Instemul Information */
 591 QSI_DEF(SystemVdmInstemulInformation)
 592 {
 593         /* FIXME */
 594         return (STATUS_NOT_IMPLEMENTED);
 595 }
 596
 597 /* Class 20 - Vdm Bop Information */
 598 QSI_DEF(SystemVdmBopInformation)
 599 {
 600         /* FIXME */
 601         return (STATUS_NOT_IMPLEMENTED);
 602 }
 603
 604 /* Class 21 - File Cache Information */
 605 QSI_DEF(SystemFileCacheInformation)
 606 {
 607         if (Size < sizeof (SYSTEM_CACHE_INFORMATION))
 608         {
 609                 * ReqSize = sizeof (SYSTEM_CACHE_INFORMATION);
 610                 return (STATUS_INFO_LENGTH_MISMATCH);
 611         }
 612         /* FIXME */
 613         return (STATUS_NOT_IMPLEMENTED);
 614 }
 615
 616 SSI_DEF(SystemFileCacheInformation)
 617 {
 618         if (Size < sizeof (SYSTEM_CACHE_INFORMATION))
 619         {
 620                 return (STATUS_INFO_LENGTH_MISMATCH);
 621         }
 622         /* FIXME */
 623         return (STATUS_NOT_IMPLEMENTED);
 624 }
 625
 626 /* Class 22 - Pool Tag Information */
 627 QSI_DEF(SystemPoolTagInformation)
 628 {
 629         /* FIXME */
 630         return (STATUS_NOT_IMPLEMENTED);
 631 }
 632
 633 /* Class 23 - Interrupt Information */
 634 QSI_DEF(SystemInterruptInformation)
 635 {
 636         /* FIXME */
 637         return (STATUS_NOT_IMPLEMENTED);
 638 }
 639
 640 /* Class 24 - DPC Behaviour Information */
 641 QSI_DEF(SystemDpcBehaviourInformation)
 642 {
 643         /* FIXME */
 644         return (STATUS_NOT_IMPLEMENTED);
 645 }
 646
 647 SSI_DEF(SystemDpcBehaviourInformation)
 648 {
 649         /* FIXME */
 650         return (STATUS_NOT_IMPLEMENTED);
 651 }
 652
 653 /* Class 25 - Full Memory Information */
 654 QSI_DEF(SystemFullMemoryInformation)
 655 {
 656         /* FIXME */
 657         return (STATUS_NOT_IMPLEMENTED);
 658 }
 659
 660 /* Class 26 - Load Image */
 661 SSI_DEF(SystemLoadImage)
 662 {
 663   PSYSTEM_LOAD_IMAGE Sli = (PSYSTEM_LOAD_IMAGE)Buffer;
 664
 665   if (sizeof(SYSTEM_LOAD_IMAGE) != Size)
 666     {
 667       return(STATUS_INFO_LENGTH_MISMATCH);
 668     }
 669
 670   return(LdrpLoadImage(&Sli->ModuleName,
 671                        &Sli->ModuleBase,
 672                        &Sli->SectionPointer,
 673                        &Sli->EntryPoint,
 674                        &Sli->ExportDirectory));
 675 }
 676
 677 /* Class 27 - Unload Image */
 678 SSI_DEF(SystemUnloadImage)
 679 {
 680   PSYSTEM_UNLOAD_IMAGE Sui = (PSYSTEM_UNLOAD_IMAGE)Buffer;
 681
 682   if (sizeof(SYSTEM_UNLOAD_IMAGE) != Size)
 683     {
 684       return(STATUS_INFO_LENGTH_MISMATCH);
 685     }
 686
 687   return(LdrpUnloadImage(Sui->ModuleBase));
 688 }
 689
 690 /* Class 28 - Time Adjustment Information */
 691 QSI_DEF(SystemTimeAdjustmentInformation)
 692 {
 693         if (sizeof (SYSTEM_TIME_ADJUSTMENT_INFO) > Size)
 694         {
 695                 * ReqSize = sizeof (SYSTEM_TIME_ADJUSTMENT_INFO);
 696                 return (STATUS_INFO_LENGTH_MISMATCH);
 697         }
 698         /* FIXME: */
 699         return (STATUS_NOT_IMPLEMENTED);
 700 }
 701
 702 SSI_DEF(SystemTimeAdjustmentInformation)
 703 {
 704         if (sizeof (SYSTEM_TIME_ADJUSTMENT_INFO) > Size)
 705         {
 706                 return (STATUS_INFO_LENGTH_MISMATCH);
 707         }
 708         /* FIXME: */
 709         return (STATUS_NOT_IMPLEMENTED);
 710 }
 711
 712 /* Class 29 - Summary Memory Information */
 713 QSI_DEF(SystemSummaryMemoryInformation)
 714 {
 715         /* FIXME */
 716         return (STATUS_NOT_IMPLEMENTED);
 717 }
 718
 719 /* Class 30 - Next Event Id Information */
 720 QSI_DEF(SystemNextEventIdInformation)
 721 {
 722         /* FIXME */
 723         return (STATUS_NOT_IMPLEMENTED);
 724 }
 725
 726 /* Class 31 - Event Ids Information */
 727 QSI_DEF(SystemEventIdsInformation)
 728 {
 729         /* FIXME */
 730         return (STATUS_NOT_IMPLEMENTED);
 731 }
 732
 733 /* Class 32 - Crach Dump Information */
 734 QSI_DEF(SystemCrashDumpInformation)
 735 {
 736         /* FIXME */
 737         return (STATUS_NOT_IMPLEMENTED);
 738 }
 739
 740 /* Class 33 - Exception Information */
 741 QSI_DEF(SystemExceptionInformation)
 742 {
 743         /* FIXME */
 744         return (STATUS_NOT_IMPLEMENTED);
 745 }
 746
 747 /* Class 34 - Crach Dump State Information */
 748 QSI_DEF(SystemCrashDumpStateInformation)
 749 {
 750         /* FIXME */
 751         return (STATUS_NOT_IMPLEMENTED);
 752 }
 753
 754 /* Class 35 - Kernel Debugger Information */
 755 QSI_DEF(SystemKernelDebuggerInformation)
 756 {
 757         /* FIXME */
 758         return (STATUS_NOT_IMPLEMENTED);
 759 }
 760
 761 /* Class 36 - Context Switch Information */
 762 QSI_DEF(SystemContextSwitchInformation)
 763 {
 764         /* FIXME */
 765         return (STATUS_NOT_IMPLEMENTED);
 766 }
 767
 768 /* Class 37 - Registry Quota Information */
 769 QSI_DEF(SystemRegistryQuotaInformation)
 770 {
 771         /* FIXME */
 772         return (STATUS_NOT_IMPLEMENTED);
 773 }
 774
 775 SSI_DEF(SystemRegistryQuotaInformation)
 776 {
 777         /* FIXME */
 778         return (STATUS_NOT_IMPLEMENTED);
 779 }
 780
 781 /* Class 38 - Load And Call Image */
 782 SSI_DEF(SystemLoadAndCallImage)
 783 {
 784   PSYSTEM_LOAD_AND_CALL_IMAGE Slci = (PSYSTEM_LOAD_AND_CALL_IMAGE)Buffer;
 785
 786   if (sizeof(SYSTEM_LOAD_AND_CALL_IMAGE) != Size)
 787     {
 788       return(STATUS_INFO_LENGTH_MISMATCH);
 789     }
 790
 791   return(LdrpLoadAndCallImage(&Slci->ModuleName));
 792 }
 793
 794 /* Class 39 - Priority Seperation */
 795 SSI_DEF(SystemPrioritySeperation)
 796 {
 797         /* FIXME */
 798         return (STATUS_NOT_IMPLEMENTED);
 799 }
 800
 801 /* Class 40 - Plug Play Bus Information */
 802 QSI_DEF(SystemPlugPlayBusInformation)
 803 {
 804         /* FIXME */
 805         return (STATUS_NOT_IMPLEMENTED);
 806 }
 807
 808 /* Class 41 - Dock Information */
 809 QSI_DEF(SystemDockInformation)
 810 {
 811         /* FIXME */
 812         return (STATUS_NOT_IMPLEMENTED);
 813 }
 814
 815 /* Class 42 - Power Information */
 816 QSI_DEF(SystemPowerInformation)
 817 {
 818         /* FIXME */
 819         return (STATUS_NOT_IMPLEMENTED);
 820 }
 821
 822 /* Class 43 - Processor Speed Information */
 823 QSI_DEF(SystemProcessorSpeedInformation)
 824 {
 825         /* FIXME */
 826         return (STATUS_NOT_IMPLEMENTED);
 827 }
 828
 829 /* Class 44 - Current Time Zone Information */
 830 QSI_DEF(SystemCurrentTimeZoneInformation)
 831 {
 832         * ReqSize = sizeof (TIME_ZONE_INFORMATION);
 833
 834         if (sizeof (TIME_ZONE_INFORMATION) != Size)
 835         {
 836                 return (STATUS_INFO_LENGTH_MISMATCH);
 837         }
 838         /* Copy the time zone information struct */
 839         memcpy (
 840                 Buffer,
 841                 & SystemTimeZoneInfo,
 842                 sizeof (TIME_ZONE_INFORMATION)
 843                 );
 844
 845         return (STATUS_SUCCESS);
 846 }
 847
 848
 849 SSI_DEF(SystemCurrentTimeZoneInformation)
 850 {
 851         /*
 852          * Check user buffer's size
 853          */
 854         if (Size < sizeof (TIME_ZONE_INFORMATION))
 855         {
 856                 return (STATUS_INFO_LENGTH_MISMATCH);
 857         }
 858         /* Copy the time zone information struct */
 859         memcpy (
 860                 & SystemTimeZoneInfo,
 861                 (TIME_ZONE_INFORMATION *) Buffer,
 862                 sizeof (TIME_ZONE_INFORMATION)
 863                 );
 864         return (STATUS_SUCCESS);
 865 }
 866
 867
 868 /* Class 45 - Lookaside Information */
 869 QSI_DEF(SystemLookasideInformation)
 870 {
 871         /* FIXME */
 872         return (STATUS_NOT_IMPLEMENTED);
 873 }
 874
 875
 876 /* Class 46 - Set time slip event */
 877 SSI_DEF(SystemSetTimeSlipEvent)
 878 {
 879         /* FIXME */
 880         return (STATUS_NOT_IMPLEMENTED);
 881 }
 882
 883
 884 /* Class 47 - Create a new session (TSE) */
 885 SSI_DEF(SystemCreateSession)
 886 {
 887         /* FIXME */
 888         return (STATUS_NOT_IMPLEMENTED);
 889 }
 890
 891
 892 /* Class 48 - Delete an existing session (TSE) */
 893 SSI_DEF(SystemDeleteSession)
 894 {
 895         /* FIXME */
 896         return (STATUS_NOT_IMPLEMENTED);
 897 }
 898
 899
 900 /* Class 49 - UNKNOWN */
 901 QSI_DEF(SystemInvalidInfoClass4)
 902 {
 903         /* FIXME */
 904         return (STATUS_NOT_IMPLEMENTED);
 905 }
 906
 907
 908 /* Class 50 - System range start address */
 909 QSI_DEF(SystemRangeStartInformation)
 910 {
 911         /* FIXME */
 912         return (STATUS_NOT_IMPLEMENTED);
 913 }
 914
 915
 916 /* Class 51 - Driver verifier information */
 917 QSI_DEF(SystemVerifierInformation)
 918 {
 919         /* FIXME */
 920         return (STATUS_NOT_IMPLEMENTED);
 921 }
 922
 923
 924 SSI_DEF(SystemVerifierInformation)
 925 {
 926         /* FIXME */
 927         return (STATUS_NOT_IMPLEMENTED);
 928 }
 929
 930
 931 /* Class 52 - Add a driver verifier */
 932 SSI_DEF(SystemAddVerifier)
 933 {
 934         /* FIXME */
 935         return (STATUS_NOT_IMPLEMENTED);
 936 }
 937
 938
 939 /* Class 53 - A session's processes  */
 940 QSI_DEF(SystemSessionProcessesInformation)
 941 {
 942         /* FIXME */
 943         return (STATUS_NOT_IMPLEMENTED);
 944 }
 945
 946
 947 /* Query/Set Calls Table */
 948 typedef
 949 struct _QSSI_CALLS
 950 {
 951         NTSTATUS (* Query) (PVOID,ULONG,PULONG);
 952         NTSTATUS (* Set) (PVOID,ULONG);
 953
 954 } QSSI_CALLS;
 955
 956 // QS   Query & Set
 957 // QX   Query
 958 // XQ   Set
 959 // XX   unknown behaviour
 960 //
 961 #define SI_QS(n) {QSI_USE(n),SSI_USE(n)}
 962 #define SI_QX(n) {QSI_USE(n),NULL}
 963 #define SI_XS(n) {NULL,SSI_USE(n)}
 964 #define SI_XX(n) {NULL,NULL}
 965
 966 static
 967 QSSI_CALLS
 968 CallQS [] =
 969 {
 970         SI_QX(SystemBasicInformation),
 971         SI_QX(SystemProcessorInformation),
 972         SI_QX(SystemPerformanceInformation),
 973         SI_QX(SystemTimeOfDayInformation),
 974         SI_QX(SystemPathInformation), /* should be SI_XX */
 975         SI_QX(SystemProcessInformation),
 976         SI_QX(SystemCallCountInformation),
 977         SI_QX(SystemDeviceInformation),
 978         SI_QX(SystemProcessorPerformanceInformation),
 979         SI_QS(SystemFlagsInformation),
 980         SI_QX(SystemCallTimeInformation), /* should be SI_XX */
 981         SI_QX(SystemModuleInformation),
 982         SI_QX(SystemLocksInformation),
 983         SI_QX(SystemStackTraceInformation), /* should be SI_XX */
 984         SI_QX(SystemPagedPoolInformation), /* should be SI_XX */
 985         SI_QX(SystemNonPagedPoolInformation), /* should be SI_XX */
 986         SI_QX(SystemHandleInformation),
 987         SI_QX(SystemObjectInformation),
 988         SI_QX(SystemPageFileInformation),
 989         SI_QX(SystemVdmInstemulInformation),
 990         SI_QX(SystemVdmBopInformation), /* it should be SI_XX */
 991         SI_QS(SystemFileCacheInformation),
 992         SI_QX(SystemPoolTagInformation),
 993         SI_QX(SystemInterruptInformation),
 994         SI_QS(SystemDpcBehaviourInformation),
 995         SI_QX(SystemFullMemoryInformation), /* it should be SI_XX */
 996         SI_XS(SystemLoadImage),
 997         SI_XS(SystemUnloadImage),
 998         SI_QS(SystemTimeAdjustmentInformation),
 999         SI_QX(SystemSummaryMemoryInformation), /* it should be SI_XX */
1000         SI_QX(SystemNextEventIdInformation), /* it should be SI_XX */
1001         SI_QX(SystemEventIdsInformation), /* it should be SI_XX */
1002         SI_QX(SystemCrashDumpInformation),
1003         SI_QX(SystemExceptionInformation),
1004         SI_QX(SystemCrashDumpStateInformation),
1005         SI_QX(SystemKernelDebuggerInformation),
1006         SI_QX(SystemContextSwitchInformation),
1007         SI_QS(SystemRegistryQuotaInformation),
1008         SI_XS(SystemLoadAndCallImage),
1009         SI_XS(SystemPrioritySeperation),
1010         SI_QX(SystemPlugPlayBusInformation), /* it should be SI_XX */
1011         SI_QX(SystemDockInformation), /* it should be SI_XX */
1012         SI_QX(SystemPowerInformation), /* it should be SI_XX */
1013         SI_QX(SystemProcessorSpeedInformation), /* it should be SI_XX */
1014         SI_QS(SystemCurrentTimeZoneInformation), /* it should be SI_QX */
1015         SI_QX(SystemLookasideInformation),
1016         SI_XS(SystemSetTimeSlipEvent),
1017         SI_XS(SystemCreateSession),
1018         SI_XS(SystemDeleteSession),
1019         SI_QX(SystemInvalidInfoClass4), /* it should be SI_XX */
1020         SI_QX(SystemRangeStartInformation),
1021         SI_QS(SystemVerifierInformation),
1022         SI_XS(SystemAddVerifier),
1023         SI_QX(SystemSessionProcessesInformation)
1024 };
1025
1026
1027 NTSTATUS STDCALL
1028 NtQuerySystemInformation (IN SYSTEM_INFORMATION_CLASS SystemInformationClass,
1029                           OUT PVOID UnsafeSystemInformation,
1030                           IN ULONG Length,
1031                           OUT PULONG UnsafeResultLength)
1032 {
1033   ULONG ResultLength;
1034   PVOID SystemInformation;
1035   NTSTATUS Status;
1036   NTSTATUS FStatus;
1037
1038   if (ExGetPreviousMode() == KernelMode)
1039     {
1040       SystemInformation = UnsafeSystemInformation;
1041     }
1042   else
1043     {
1044       SystemInformation = ExAllocatePool(NonPagedPool, Length);
1045       if (SystemInformation == NULL)
1046         {
1047           return(STATUS_NO_MEMORY);
1048         }
1049     }
1050
1051   /* Clear user buffer. */
1052   RtlZeroMemory(SystemInformation, Length);
1053
1054   /*
1055    * Check the request is valid.
1056    */
1057   if ((SystemInformationClass >= SystemInformationClassMin) &&
1058       (SystemInformationClass < SystemInformationClassMax))
1059     {
1060       if (NULL != CallQS [SystemInformationClass].Query)
1061         {
1062           /*
1063            * Hand the request to a subhandler.
1064            */
1065           FStatus = CallQS [SystemInformationClass].Query(SystemInformation,
1066                                                           Length,
1067                                                           &ResultLength);
1068           if (ExGetPreviousMode() != KernelMode)
1069             {
1070               Status = MmCopyToCaller(UnsafeSystemInformation,
1071                                       SystemInformation,
1072                                       Length);
1073               ExFreePool(SystemInformation);
1074               if (!NT_SUCCESS(Status))
1075                 {
1076                   return(Status);
1077                 }
1078             }
1079           if (UnsafeResultLength != NULL)
1080             {
1081               if (ExGetPreviousMode() == KernelMode)
1082                 {
1083                   *UnsafeResultLength = ResultLength;
1084                 }
1085               else
1086                 {
1087                   Status = MmCopyToCaller(UnsafeResultLength,
1088                                           &ResultLength,
1089                                           sizeof(ULONG));
1090                   if (!NT_SUCCESS(Status))
1091                     {
1092                       return(Status);
1093                     }
1094                 }
1095             }
1096           return(FStatus);
1097         }
1098     }
1099   return (STATUS_INVALID_INFO_CLASS);
1100 }
1101
1102
1103 NTSTATUS
1104 STDCALL
1105 NtSetSystemInformation (
1106         IN      SYSTEM_INFORMATION_CLASS        SystemInformationClass,
1107         IN      PVOID                           SystemInformation,
1108         IN      ULONG                           SystemInformationLength
1109         )
1110 {
1111         /*
1112          * If called from user mode, check
1113          * possible unsafe arguments.
1114          */
1115 #if 0
1116         if (KernelMode != KeGetPreviousMode())
1117         {
1118                 // Check arguments
1119                 //ProbeForWrite(
1120                 //      SystemInformation,
1121                 //      Length
1122                 //      );
1123                 //ProbeForWrite(
1124                 //      ResultLength,
1125                 //      sizeof (ULONG)
1126                 //      );
1127         }
1128 #endif
1129         /*
1130          * Check the request is valid.
1131          */
1132         if (    (SystemInformationClass >= SystemInformationClassMin)
1133                 && (SystemInformationClass < SystemInformationClassMax)
1134                 )
1135         {
1136                 if (NULL != CallQS [SystemInformationClass].Set)
1137                 {
1138                         /*
1139                          * Hand the request to a subhandler.
1140                          */
1141                         return CallQS [SystemInformationClass].Set (
1142                                         SystemInformation,
1143                                         SystemInformationLength
1144                                         );
1145                 }
1146         }
1147         return (STATUS_INVALID_INFO_CLASS);
1148 }
1149
1150
1151 NTSTATUS
1152 STDCALL
1153 NtFlushInstructionCache (
1154         IN      HANDLE  ProcessHandle,
1155         IN      PVOID   BaseAddress,
1156         IN      UINT    NumberOfBytesToFlush
1157         )
1158 {
1159         UNIMPLEMENTED;
1160 }
1161
1162
1163 /* EOF */