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/*
* Copyright 2016, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <signal.h>
#include <stdint.h>
#include <sys/ucontext.h>
#include <unistd.h>
#include "dump_type.h"
// Sockets in the ANDROID_SOCKET_NAMESPACE_RESERVED namespace.
// Both sockets are SOCK_SEQPACKET sockets, so no explicit length field is needed.
constexpr char kTombstonedCrashSocketName[] = "tombstoned_crash";
constexpr char kTombstonedJavaTraceSocketName[] = "tombstoned_java_trace";
constexpr char kTombstonedInterceptSocketName[] = "tombstoned_intercept";
enum class CrashPacketType : uint8_t {
// Initial request from crash_dump.
kDumpRequest = 0,
// Notification of a completed crash dump.
// Sent after a dump is completed and the process has been untraced, but
// before it has been resumed with SIGCONT.
kCompletedDump,
// Responses to kRequest.
// kPerformDump sends along an output fd via cmsg(3).
kPerformDump = 128,
kAbortDump,
};
struct DumpRequest {
DebuggerdDumpType dump_type;
int32_t pid;
};
// The full packet must always be written, regardless of whether the union is used.
struct TombstonedCrashPacket {
CrashPacketType packet_type;
union {
DumpRequest dump_request;
} packet;
};
// Comes with a file descriptor via SCM_RIGHTS.
// This packet should be sent before an actual dump happens.
struct InterceptRequest {
DebuggerdDumpType dump_type;
int32_t pid;
};
enum class InterceptStatus : uint8_t {
// Returned when an intercept of a different type has already been
// registered (and is active) for a given PID.
kFailedAlreadyRegistered,
// Returned in all other failure cases.
kFailed,
kStarted,
kRegistered,
};
// Sent either immediately upon failure, or when the intercept has been used.
struct InterceptResponse {
InterceptStatus status;
char error_message[127]; // always null-terminated
};
// Sent from handler to crash_dump via pipe.
struct __attribute__((__packed__)) CrashInfo {
uint32_t version; // must be 1.
siginfo_t siginfo;
ucontext_t ucontext;
uintptr_t abort_msg_address;
};
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