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