be1cf9006a
The exit of init panics the system *after* process context (mm, stack,
...etc.) are recycled, according to Linux kernel's 'do_exit'
implementation. To preserve most init process context for debugging,
triggers the panic via proc-sysrq explicitly.
Note: after this change, there will be no "Attempt to kill init" panic
when androidboot.init_fatal_panic is set.
Test: Insert data abort fault in init, the full process context is
preserved in memory dump captured after panic.
Bug: 155940351
Change-Id: I3393bd00f99b8cb432cfa19a105b7d636b411764
36 lines
1.2 KiB
C++
36 lines
1.2 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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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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*/
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#pragma once
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#include <string>
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#define PROC_SYSRQ "/proc/sysrq-trigger"
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namespace android {
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namespace init {
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void SetFatalRebootTarget();
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// Determines whether the system is capable of rebooting. This is conservative,
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// so if any of the attempts to determine this fail, it will still return true.
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bool IsRebootCapable();
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// This is a wrapper around the actual reboot calls.
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void __attribute__((noreturn)) RebootSystem(unsigned int cmd, const std::string& reboot_target);
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void __attribute__((noreturn)) InitFatalReboot(int signal_number);
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void InstallRebootSignalHandlers();
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} // namespace init
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} // namespace android
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