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/*
* Copyright (C) 2018 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#pragma once
#include <sys/cdefs.h>
#include <signal.h>
#include "macros.h"
// Realtime signals reserved for internal use:
// 32 (__SIGRTMIN + 0) POSIX timers
// 33 (__SIGRTMIN + 1) libbacktrace
// 34 (__SIGRTMIN + 2) libcore
// 35 (__SIGRTMIN + 3) debuggerd
// 36 (__SIGRTMIN + 4) platform profilers (heapprofd, traced_perf)
// 37 (__SIGRTMIN + 5) coverage (libprofile-extras)
// 38 (__SIGRTMIN + 6) heapprofd ART managed heap dumps
// 39 (__SIGRTMIN + 7) fdtrack
//
// If you change this, also change __ndk_legacy___libc_current_sigrtmin
// in <android/legacy_signal_inlines.h> to match.
#define BIONIC_SIGNAL_POSIX_TIMERS (__SIGRTMIN + 0)
#define BIONIC_SIGNAL_BACKTRACE (__SIGRTMIN + 1)
#define BIONIC_SIGNAL_DEBUGGER (__SIGRTMIN + 3)
#define BIONIC_SIGNAL_PROFILER (__SIGRTMIN + 4)
#define BIONIC_SIGNAL_ART_PROFILER (__SIGRTMIN + 6)
#define BIONIC_SIGNAL_FDTRACK (__SIGRTMIN + 7)
#define __SIGRT_RESERVED 8
static inline __always_inline sigset64_t filter_reserved_signals(sigset64_t sigset, int how) {
int (*block)(sigset64_t*, int);
int (*unblock)(sigset64_t*, int);
switch (how) {
case SIG_BLOCK:
__BIONIC_FALLTHROUGH;
case SIG_SETMASK:
block = sigaddset64;
unblock = sigdelset64;
break;
case SIG_UNBLOCK:
block = sigdelset64;
unblock = sigaddset64;
break;
}
// The POSIX timer signal must be blocked.
block(&sigset, __SIGRTMIN + 0);
// Everything else must remain unblocked.
unblock(&sigset, __SIGRTMIN + 1);
unblock(&sigset, __SIGRTMIN + 2);
unblock(&sigset, __SIGRTMIN + 3);
unblock(&sigset, __SIGRTMIN + 4);
unblock(&sigset, __SIGRTMIN + 5);
unblock(&sigset, __SIGRTMIN + 6);
unblock(&sigset, __SIGRTMIN + 7);
return sigset;
}
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