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30566abed8
This patch is part of a bigger patch that helps merging the breakpad code
with the modified version in Chromium OS.
Specifically, this patch makes the following changes:
1. Turn the LinuxDumper class into a base class and move ptrace related
code into a new derived class, LinuxPtraceDumper.
2. Add a LinuxCoreDumper class, which is derived from LinuxDumper, to
extract information from a crashed process via a core dump file instead
of ptrace.
3. Add a WriteMinidumpFromCore function to
src/client/linux/minidump_writer/minidump_writer.h,
which uses LinuxCoreDumper to extract information from a core dump file.
4. Add a core2md utility, which simply wraps WriteMinidumpFromCore, for
converting a core dump to a minidump.
BUG=455
TEST=Tested the following:
1. Build on 32-bit and 64-bit Linux with gcc 4.4.3 and gcc 4.6.
2. Build on Mac OS X 10.6.8 with gcc 4.2 and clang 3.0 (with latest gmock).
3. All unit tests pass.
4. Run Chromium OS tests to test core2md.
Review URL: http://breakpad.appspot.com/343001
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@905 4c0a9323-5329-0410-9bdc-e9ce6186880e
93 lines
4.0 KiB
C++
93 lines
4.0 KiB
C++
// Copyright (c) 2012, Google Inc.
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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 are
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// met:
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//
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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
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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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 FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// linux_ptrace_dumper.h: Define the google_breakpad::LinuxPtraceDumper
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// class, which is derived from google_breakpad::LinuxDumper to extract
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// information from a crashed process via ptrace.
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// This class was originally splitted from google_breakpad::LinuxDumper.
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#ifndef CLIENT_LINUX_MINIDUMP_WRITER_LINUX_PTRACE_DUMPER_H_
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#define CLIENT_LINUX_MINIDUMP_WRITER_LINUX_PTRACE_DUMPER_H_
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#include "client/linux/minidump_writer/linux_dumper.h"
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namespace google_breakpad {
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class LinuxPtraceDumper : public LinuxDumper {
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public:
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// Constructs a dumper for extracting information of a given process
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// with a process ID of |pid|.
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explicit LinuxPtraceDumper(pid_t pid);
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// Implements LinuxDumper::BuildProcPath().
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// Builds a proc path for a certain pid for a node (/proc/<pid>/<node>).
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// |path| is a character array of at least NAME_MAX bytes to return the
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// result. |node| is the final node without any slashes. Returns true on
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// success.
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virtual bool BuildProcPath(char* path, pid_t pid, const char* node) const;
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// Implements LinuxDumper::CopyFromProcess().
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// Copies content of |length| bytes from a given process |child|,
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// starting from |src|, into |dest|. This method uses ptrace to extract
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// the content from the target process.
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virtual void CopyFromProcess(void* dest, pid_t child, const void* src,
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size_t length);
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// Implements LinuxDumper::GetThreadInfoByIndex().
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// Reads information about the |index|-th thread of |threads_|.
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// Returns true on success. One must have called |ThreadsSuspend| first.
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virtual bool GetThreadInfoByIndex(size_t index, ThreadInfo* info);
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// Implements LinuxDumper::IsPostMortem().
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// Always returns false to indicate this dumper performs a dump of
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// a crashed process via ptrace.
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virtual bool IsPostMortem() const;
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// Implements LinuxDumper::ThreadsSuspend().
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// Suspends all threads in the given process. Returns true on success.
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virtual bool ThreadsSuspend();
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// Implements LinuxDumper::ThreadsResume().
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// Resumes all threads in the given process. Returns true on success.
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virtual bool ThreadsResume();
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protected:
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// Implements LinuxDumper::EnumerateThreads().
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// Enumerates all threads of the given process into |threads_|.
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virtual bool EnumerateThreads();
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private:
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// Set to true if all threads of the crashed process are suspended.
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bool threads_suspended_;
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};
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} // namespace google_breakpad
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#endif // CLIENT_LINUX_HANDLER_LINUX_PTRACE_DUMPER_H_
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