52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
// Copyright 2019 Google
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include "FIRCLSFeatures.h"
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#include "FIRCLSFile.h"
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#include <signal.h>
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#include <stdbool.h>
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#define FIRCLSSignalCount (7)
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// per man sigaltstack, MINSIGSTKSZ is the minimum *overhead* needed to support
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// a signal stack. The actual stack size must be larger. Let's pick the recommended
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// size.
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#if CLS_USE_SIGALTSTACK
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#define CLS_SIGNAL_HANDLER_STACK_SIZE (SIGSTKSZ * 2)
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#else
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#define CLS_SIGNAL_HANDLER_STACK_SIZE 0
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#endif
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typedef struct {
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const char* path;
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struct sigaction originalActions[FIRCLSSignalCount];
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#if CLS_USE_SIGALTSTACK
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stack_t originalStack;
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#endif
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} FIRCLSSignalReadContext;
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void FIRCLSSignalInitialize(FIRCLSSignalReadContext* roContext);
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void FIRCLSSignalCheckHandlers(void);
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void FIRCLSSignalSafeRemoveHandlers(bool includingAbort);
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bool FIRCLSSignalSafeInstallPreexistingHandlers(FIRCLSSignalReadContext* roContext);
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void FIRCLSSignalNameLookup(int number, int code, const char** name, const char** codeName);
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void FIRCLSSignalEnumerateHandledSignals(void (^block)(int idx, int signal));
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