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/*
* Copyright 2003 Red Hat, Inc.
* Copyright 2007-2016 Ralf Habacker
* Copyright 2014-2018 Collabora Ltd.
* Copyright 2016 Yiyang Fei
*
* SPDX-License-Identifier: AFL-2.1 OR GPL-2.0-or-later
*
* Licensed under the Academic Free License version 2.1
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* This test utility function is separated from test-utils.h because it
* needs to be used by test-segfault, which deliberately crashes itself.
*
* test-segfault can't be linked to non-self-contained dbus code because
* we want to avoid building it with the AddressSanitizer even if we are
* using the AddressSanitizer for the rest of dbus, so that the
* AddressSanitizer doesn't turn raise(SIGSEGV) into the equivalent of
* _exit(1), causing the test that uses test-segfault to see an unexpected
* exit status.
*/
#include "config.h"
#include "disable-crash-handling.h"
#ifdef DBUS_WIN
#include <stdio.h>
#include <windows.h>
#include <dbus/dbus-macros.h>
static int exception_handler (LPEXCEPTION_POINTERS p) _DBUS_GNUC_NORETURN;
static int
exception_handler (LPEXCEPTION_POINTERS p)
{
ExitProcess (0xc0000005);
}
/**
* Try to disable core dumps and similar special crash handling.
*/
void
_dbus_disable_crash_handling (void)
{
/* Disable Windows popup dialog when an app crashes so that app quits
* immediately with error code instead of waiting for user to dismiss
* the dialog. */
DWORD dwMode = SetErrorMode (SEM_NOGPFAULTERRORBOX);
SetErrorMode (dwMode | SEM_NOGPFAULTERRORBOX);
/* Disable "just in time" debugger */
SetUnhandledExceptionFilter ((LPTOP_LEVEL_EXCEPTION_FILTER) &exception_handler);
}
#else /* !DBUS_WIN */
#ifdef HAVE_SYS_PRCTL_H
#include <sys/prctl.h>
#endif
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
/**
* Try to disable core dumps and similar special crash handling.
*/
void
_dbus_disable_crash_handling (void)
{
#ifdef HAVE_SETRLIMIT
/* No core dumps please, we know we crashed. */
struct rlimit r = { 0, };
getrlimit (RLIMIT_CORE, &r);
r.rlim_cur = 0;
setrlimit (RLIMIT_CORE, &r);
#endif
#if defined(HAVE_PRCTL) && defined(PR_SET_DUMPABLE)
/* Really, no core dumps please. On Linux, if core_pattern is
* set to a pipe (for abrt/apport/corekeeper/etc.), RLIMIT_CORE of 0
* is ignored (deliberately, so people can debug init(8) and other
* early stuff); but Linux has PR_SET_DUMPABLE, so we can avoid core
* dumps anyway. */
prctl (PR_SET_DUMPABLE, 0, 0, 0, 0);
#endif
}
#endif /* !DBUS_WIN */
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