6bcc4acc6f
On 64 bit systems, calling dump_backtrace_to_file will automatically
call debuggerd64. If the process to dump is actually 32 bit, this
creates an unrecognizable dump backtrace. Modify the code to check the
type of the process and connect to the appropriate debuggerd process.
This change refactors both the tombstone and backtrace functionality to
allow both to work properly on 64 bit systems when dealing with mixed
processes.
Bug: 17487122
(cherry picked from commit a9fa7b87f1)
Change-Id: I3c9e0212c8720877a6af092071a3695df2a36df8
76 lines
2 KiB
C
76 lines
2 KiB
C
/*
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* Copyright (C) 2012 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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#ifndef __CUTILS_DEBUGGER_H
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#define __CUTILS_DEBUGGER_H
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define DEBUGGER32_SOCKET_NAME "android:debuggerd"
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#define DEBUGGER64_SOCKET_NAME "android:debuggerd64"
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#if defined(__LP64__)
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#define DEBUGGER_SOCKET_NAME DEBUGGER64_SOCKET_NAME
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#else
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#define DEBUGGER_SOCKET_NAME DEBUGGER32_SOCKET_NAME
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#endif
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typedef enum {
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// dump a crash
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DEBUGGER_ACTION_CRASH,
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// dump a tombstone file
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DEBUGGER_ACTION_DUMP_TOMBSTONE,
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// dump a backtrace only back to the socket
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DEBUGGER_ACTION_DUMP_BACKTRACE,
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} debugger_action_t;
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typedef struct {
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debugger_action_t action;
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pid_t tid;
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uintptr_t abort_msg_address;
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int32_t original_si_code;
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} debugger_msg_t;
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#if defined(__LP64__)
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// For a 64 bit process to contact the 32 bit debuggerd.
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typedef struct {
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debugger_action_t action;
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pid_t tid;
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uint32_t abort_msg_address;
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int32_t original_si_code;
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} debugger32_msg_t;
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#endif
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/* Dumps a process backtrace, registers, and stack to a tombstone file (requires root).
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* Stores the tombstone path in the provided buffer.
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* Returns 0 on success, -1 on error.
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*/
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int dump_tombstone(pid_t tid, char* pathbuf, size_t pathlen);
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/* Dumps a process backtrace only to the specified file (requires root).
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* Returns 0 on success, -1 on error.
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*/
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int dump_backtrace_to_file(pid_t tid, int fd);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __CUTILS_DEBUGGER_H */
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