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68 lines
1.8 KiB
68 lines
1.8 KiB
/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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gs_support.c
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Abstract:
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This module contains the support for the compiler /GS switch
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Author:
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Bryan Tuttle (bryant) 01-aug-2000
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Revision History:
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Initial version copied from CRT source. Code must be generic to link into
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usermode or kernemode. Limited to calling ntdll/ntoskrnl exports or using
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shared memory data.
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--*/
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#include <windows.h>
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FARPROC __gs_AltFailFunction;
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extern FARPROC __gs_pfUnhandledExceptionFilter;
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void __cdecl __report_gsfailure(void)
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{
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//
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// Don't call DbgPrint by default since it generates a Ctrl-C
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// exception as part of outputting to the debugger and we
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// can't trust exception handling at this point.
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//
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// DbgPrint("***** Stack overwrite detected in %ws *****\n",
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// NtCurrentPeb()->ProcessParameters->CommandLine.Buffer);
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//
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// Fake an exception. We can't raise an exception for real since
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// the stack (and therefore exception handling) can't be trusted.
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//
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if (__gs_AltFailFunction) {
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__gs_AltFailFunction();
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}
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if (__gs_pfUnhandledExceptionFilter)
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{
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EXCEPTION_RECORD ExceptionRecord = {0};
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CONTEXT ContextRecord = {0};
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EXCEPTION_POINTERS ExceptionPointers;
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ExceptionRecord.ExceptionCode = STATUS_STACK_BUFFER_OVERRUN;
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ExceptionPointers.ExceptionRecord = &ExceptionRecord;
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ExceptionPointers.ContextRecord = &ContextRecord;
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SetUnhandledExceptionFilter(NULL); // Make sure any filter already in place is deleted.
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__gs_pfUnhandledExceptionFilter(&ExceptionPointers);
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}
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TerminateProcess(GetCurrentProcess(), ERROR_STACK_BUFFER_OVERRUN);
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}
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