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66 lines
2.2 KiB
C++
66 lines
2.2 KiB
C++
//===-- sanitizer_signal_interceptors.inc -----------------------*- C++ -*-===//
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Signal interceptors for sanitizers.
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//
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//===----------------------------------------------------------------------===//
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#include "interception/interception.h"
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#include "sanitizer_common.h"
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#include "sanitizer_internal_defs.h"
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#include "sanitizer_platform_interceptors.h"
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using namespace __sanitizer;
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#if SANITIZER_INTERCEPT_BSD_SIGNAL
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INTERCEPTOR(void *, bsd_signal, int signum, void *handler) {
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if (GetHandleSignalMode(signum) == kHandleSignalExclusive) return 0;
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return REAL(bsd_signal)(signum, handler);
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}
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#define INIT_BSD_SIGNAL COMMON_INTERCEPT_FUNCTION(bsd_signal)
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#else // SANITIZER_INTERCEPT_BSD_SIGNAL
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#define INIT_BSD_SIGNAL
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#endif // SANITIZER_INTERCEPT_BSD_SIGNAL
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#if SANITIZER_INTERCEPT_SIGNAL_AND_SIGACTION
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INTERCEPTOR(void *, signal, int signum, void *handler) {
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if (GetHandleSignalMode(signum) == kHandleSignalExclusive) return nullptr;
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return REAL(signal)(signum, handler);
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}
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#define INIT_SIGNAL COMMON_INTERCEPT_FUNCTION(signal)
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INTERCEPTOR(int, sigaction, int signum, const struct sigaction *act,
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struct sigaction *oldact) {
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if (GetHandleSignalMode(signum) == kHandleSignalExclusive) return 0;
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return REAL(sigaction)(signum, act, oldact);
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}
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#define INIT_SIGACTION COMMON_INTERCEPT_FUNCTION(sigaction)
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namespace __sanitizer {
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int real_sigaction(int signum, const void *act, void *oldact) {
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return REAL(sigaction)(signum, (const struct sigaction *)act,
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(struct sigaction *)oldact);
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}
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} // namespace __sanitizer
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#else // SANITIZER_INTERCEPT_SIGNAL_AND_SIGACTION
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#define INIT_SIGNAL
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#define INIT_SIGACTION
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// We need to have defined REAL(sigaction) on other systems.
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DEFINE_REAL(int, sigaction, int signum, const struct sigaction *act,
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struct sigaction *oldact)
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#endif // SANITIZER_INTERCEPT_SIGNAL_AND_SIGACTION
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static void InitializeSignalInterceptors() {
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static bool was_called_once;
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CHECK(!was_called_once);
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was_called_once = true;
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INIT_BSD_SIGNAL;
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INIT_SIGNAL;
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INIT_SIGACTION;
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}
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