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65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
/* Copyright (c) 2018, The Tor Project, Inc. */
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/* See LICENSE for licensing information */
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/**
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* \file winprocess_sys.c
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* \brief Subsystem object for windows process setup.
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**/
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#include "orconfig.h"
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#include "lib/subsys/subsys.h"
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#include "lib/process/winprocess_sys.h"
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#include <stdbool.h>
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#include <stddef.h>
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#ifdef _WIN32
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#include <windows.h>
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#define WINPROCESS_SYS_ENABLED true
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static int
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subsys_winprocess_initialize(void)
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{
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#ifndef HeapEnableTerminationOnCorruption
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#define HeapEnableTerminationOnCorruption 1
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#endif
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/* On heap corruption, just give up; don't try to play along. */
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HeapSetInformation(NULL, HeapEnableTerminationOnCorruption, NULL, 0);
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/* SetProcessDEPPolicy is only supported on 32-bit Windows.
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* (On 64-bit Windows it always fails, and some compilers don't like the
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* PSETDEP cast.)
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* 32-bit Windows defines _WIN32.
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* 64-bit Windows defines _WIN32 and _WIN64. */
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#ifndef _WIN64
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/* Call SetProcessDEPPolicy to permanently enable DEP.
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The function will not resolve on earlier versions of Windows,
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and failure is not dangerous. */
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HMODULE hMod = GetModuleHandleA("Kernel32.dll");
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if (hMod) {
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typedef BOOL (WINAPI *PSETDEP)(DWORD);
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PSETDEP setdeppolicy = (PSETDEP)GetProcAddress(hMod,
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"SetProcessDEPPolicy");
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if (setdeppolicy) {
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/* PROCESS_DEP_ENABLE | PROCESS_DEP_DISABLE_ATL_THUNK_EMULATION */
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setdeppolicy(3);
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}
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}
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#endif /* !defined(_WIN64) */
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return 0;
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}
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#else /* !defined(_WIN32) */
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#define WINPROCESS_SYS_ENABLED false
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#define subsys_winprocess_initialize NULL
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#endif /* defined(_WIN32) */
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const subsys_fns_t sys_winprocess = {
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.name = "winprocess",
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.level = -100,
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.supported = WINPROCESS_SYS_ENABLED,
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.initialize = subsys_winprocess_initialize,
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};
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