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[NTOS:EX] Implement query of SystemExtendedProcessInformation

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This commit is contained in:
Timo Kreuzer
2026-07-03 17:04:11 +00:00
parent f7cac4a97c
commit 05017d7160
1 changed files with 34 additions and 11 deletions
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ntoskrnl/ex/sysinfo.c
+34 -11
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@@ -881,11 +881,19 @@ QSI_DEF(SystemPathInformation)
return STATUS_NOT_IMPLEMENTED;
}
/* Class 5 - Process Information */
QSI_DEF(SystemProcessInformation)
/* Class 5 - Process Information / 57 - SystemExtendedProcessInformation */
static
NTSTATUS
ExpQuerySystemProcessInformation(
_Out_writes_bytes_(Size) PVOID Buffer,
_In_ ULONG Size,
_Out_ PULONG ReqSize,
_In_ BOOLEAN Extended)
{
const ULONG ThreadInfoSize = Extended ? sizeof(SYSTEM_EXTENDED_THREAD_INFORMATION) : sizeof(SYSTEM_THREAD_INFORMATION);
PSYSTEM_PROCESS_INFORMATION SpiCurrent;
PSYSTEM_THREAD_INFORMATION ThreadInfo;
PSYSTEM_EXTENDED_THREAD_INFORMATION ThreadInfoEx;
PEPROCESS Process = NULL, SystemProcess;
PETHREAD CurrentThread;
ANSI_STRING ImageName;
@@ -952,12 +960,13 @@ QSI_DEF(SystemProcessInformation)
CurrentEntry = Process->Pcb.ThreadListHead.Flink;
while (CurrentEntry != &Process->Pcb.ThreadListHead)
{
CurrentThread = CONTAINING_RECORD(CurrentEntry, ETHREAD, Tcb.ThreadListEntry);
ThreadsCount++;
CurrentEntry = CurrentEntry->Flink;
}
// size of the structure for every process
CurrentSize = sizeof(SYSTEM_PROCESS_INFORMATION) + sizeof(SYSTEM_THREAD_INFORMATION) * ThreadsCount;
CurrentSize = sizeof(SYSTEM_PROCESS_INFORMATION) + ThreadInfoSize * ThreadsCount;
ImageNameLength = 0;
Status = SeLocateProcessImageName(Process, &TempProcessImageName);
ProcessImageName = TempProcessImageName;
@@ -1051,10 +1060,12 @@ QSI_DEF(SystemProcessInformation)
SpiCurrent->PagefileUsage = Process->QuotaUsage[PsPageFile];
SpiCurrent->PeakPagefileUsage = Process->QuotaPeak[PsPageFile];
SpiCurrent->PrivatePageCount = Process->CommitCharge;
ThreadInfo = (PSYSTEM_THREAD_INFORMATION)(SpiCurrent + 1);
CurrentEntry = Process->Pcb.ThreadListHead.Flink;
while (CurrentEntry != &Process->Pcb.ThreadListHead)
/* Now do the threads */
ThreadInfo = (PSYSTEM_THREAD_INFORMATION)(SpiCurrent + 1);
for (CurrentEntry = Process->Pcb.ThreadListHead.Flink;
CurrentEntry != &Process->Pcb.ThreadListHead;
CurrentEntry = CurrentEntry->Flink)
{
CurrentThread = CONTAINING_RECORD(CurrentEntry, ETHREAD, Tcb.ThreadListEntry);
@@ -1069,9 +1080,17 @@ QSI_DEF(SystemProcessInformation)
ThreadInfo->ContextSwitches = CurrentThread->Tcb.ContextSwitches;
ThreadInfo->ThreadState = CurrentThread->Tcb.State;
ThreadInfo->WaitReason = CurrentThread->Tcb.WaitReason;
if (Extended)
{
ThreadInfoEx = (PSYSTEM_EXTENDED_THREAD_INFORMATION)ThreadInfo;
ThreadInfoEx->StackBase = CurrentThread->Tcb.StackBase;
ThreadInfoEx->StackLimit = (PVOID)CurrentThread->Tcb.StackLimit;
ThreadInfoEx->Win32StartAddress = (CurrentThread->Win32StartAddress ?
CurrentThread->Win32StartAddress : CurrentThread->StartAddress);
ThreadInfoEx->TebBase = CurrentThread->Tcb.Teb;
}
ThreadInfo++;
CurrentEntry = CurrentEntry->Flink;
ThreadInfo = (PSYSTEM_THREAD_INFORMATION)((PUCHAR)ThreadInfo + ThreadInfoSize);
}
/* Query total user/kernel times of a process */
@@ -1132,6 +1151,12 @@ Skip:
return Status;
}
/* Class 5 - Process Information */
QSI_DEF(SystemProcessInformation)
{
return ExpQuerySystemProcessInformation(Buffer, Size, ReqSize, FALSE);
}
/* Class 6 - Call Count Information */
QSI_DEF(SystemCallCountInformation)
{
@@ -2424,9 +2449,7 @@ QSI_DEF(SystemPrefetcherInformation)
/* Class 57 - Extended process information */
QSI_DEF(SystemExtendedProcessInformation)
{
/* FIXME */
DPRINT1("NtQuerySystemInformation - SystemExtendedProcessInformation not implemented\n");
return STATUS_NOT_IMPLEMENTED;
return ExpQuerySystemProcessInformation(Buffer, Size, ReqSize, TRUE);
}
/* Class 58 - Recommended shared data alignment */