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[NTOSKRNL] Implement NtQuerySystemInformation(SystemLogicalProcessorInformation)

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Pierre Schweitzer 2019-09-27 20:36:34 +02:00
parent bf8dda4c91
commit 96ee4509e5
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GPG key ID: 7545556C3D585B0B
1 changed files with 85 additions and 1 deletions
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86
ntoskrnl/ex/sysinfo.c
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@ -2631,6 +2631,90 @@ QSI_DEF(SystemObjectSecurityMode)
return STATUS_SUCCESS;
}
/* Class 73 - Logical processor information */
QSI_DEF(SystemLogicalProcessorInformation)
{
LONG i;
PKPRCB Prcb;
KAFFINITY CurrentProc;
NTSTATUS Status = STATUS_SUCCESS;
ULONG DataSize = 0, ProcessorFlags;
PSYSTEM_LOGICAL_PROCESSOR_INFORMATION CurrentInfo;
/* First, browse active processors, thanks to the map */
i = 0;
CurrentInfo = Buffer;
CurrentProc = KeActiveProcessors;
do
{
/* If current processor is active and is main in case of HT/MC, return it */
Prcb = KiProcessorBlock[i];
if ((CurrentProc & 1) &&
Prcb == Prcb->MultiThreadSetMaster)
{
/* Assume processor can do HT or multicore */
ProcessorFlags = 1;
/* If set is the same for PRCB and multithread, then
* actually, the processor is single core
*/
if (Prcb->SetMember == Prcb->MultiThreadProcessorSet)
{
ProcessorFlags = 0;
}
/* Check we have enough room to return */
DataSize += sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION);
if (DataSize > Size)
{
Status = STATUS_INFO_LENGTH_MISMATCH;
}
else
{
/* Zero output and return */
RtlZeroMemory(CurrentInfo, sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION));
CurrentInfo->ProcessorMask = Prcb->MultiThreadProcessorSet;
/* Processor core needs 1 if HT/MC is supported */
CurrentInfo->Relationship = RelationProcessorCore;
CurrentInfo->ProcessorCore.Flags = ProcessorFlags;
++CurrentInfo;
}
}
/* Move to the next proc */
CurrentProc >>= 1;
++i;
/* Loop while there's someone in the bitmask */
} while (CurrentProc != 0);
/* Now, return the NUMA nodes */
for (i = 0; i < KeNumberNodes; ++i)
{
/* Check we have enough room to return */
DataSize += sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION);
if (DataSize > Size)
{
Status = STATUS_INFO_LENGTH_MISMATCH;
}
else
{
/* Zero output and return */
RtlZeroMemory(CurrentInfo, sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION));
CurrentInfo->ProcessorMask = KeActiveProcessors;
/* NUMA node needs its ID */
CurrentInfo->Relationship = RelationNumaNode;
CurrentInfo->NumaNode.NodeNumber = i;
++CurrentInfo;
}
}
*ReqSize = DataSize;
return Status;
}
/* Class 76 - System firmware table information */
QSI_DEF(SystemFirmwareTableInformation)
{
@ -2826,7 +2910,7 @@ CallQS [] =
SI_QX(SystemObjectSecurityMode),
SI_XX(SystemWatchdogTimerHandler), /* FIXME: not implemented */
SI_XX(SystemWatchdogTimerInformation), /* FIXME: not implemented */
SI_XX(SystemLogicalProcessorInformation), /* FIXME: not implemented */
SI_QX(SystemLogicalProcessorInformation),
SI_XX(SystemWow64SharedInformation), /* FIXME: not implemented */
SI_XX(SystemRegisterFirmwareTableInformationHandler), /* FIXME: not implemented */
SI_QX(SystemFirmwareTableInformation),