Leaked source code of windows server 2003
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/****************************** Module Header ******************************\
* Module Name: debug.c
*
* Copyright (c) 1985 - 1999, Microsoft Corporation
*
* This module contains random debugging related functions.
*
* History:
* 17-May-1991 DarrinM Created.
* 22-Jan-1992 IanJa ANSI/Unicode neutral (all debug output is ANSI)
\***************************************************************************/
#include "precomp.h"
#pragma hdrstop
/**************************************************************************\
* ActivateDebugger
*
* Force an exception on the active application's context so it will break
* into the debugger.
*
* History:
* 05-10-91 DarrinM Created.
\***************************************************************************/
ULONG SrvActivateDebugger(
IN OUT PCSR_API_MSG m,
IN OUT PCSR_REPLY_STATUS ReplyStatus)
{
PACTIVATEDEBUGGERMSG a = (PACTIVATEDEBUGGERMSG)&m->u.ApiMessageData;
PCSR_THREAD Thread;
NTSTATUS Status;
UNREFERENCED_PARAMETER(ReplyStatus);
/*
* If the process is CSR, break
*/
if (a->ClientId.UniqueProcess == NtCurrentTeb()->ClientId.UniqueProcess) {
DbgBreakPoint();
return STATUS_SUCCESS;
}
/*
* Impersonate the client if this is a user mode request.
*/
if (m->h.u2.s2.Type == LPC_REQUEST) {
if (!CsrImpersonateClient(NULL)) {
return STATUS_UNSUCCESSFUL;
}
}
/*
* Lock the client thread
*/
Status = CsrLockThreadByClientId(a->ClientId.UniqueThread, &Thread);
if (NT_SUCCESS(Status)) {
ASSERT(a->ClientId.UniqueProcess == Thread->ClientId.UniqueProcess);
Status = DbgUiIssueRemoteBreakin (Thread->Process->ProcessHandle);
UserAssert(NT_SUCCESS(Status));
Status = NtAlertThread(Thread->ThreadHandle);
UserAssert(NT_SUCCESS(Status));
CsrUnlockThread(Thread);
}
/*
* Stop impersonating the client.
*/
if (m->h.u2.s2.Type == LPC_REQUEST) {
CsrRevertToSelf();
}
return Status;
}