// Copyright 2017 The Crashpad Authors. All rights reserved.
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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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#ifndef CRASHPAD_UTIL_LINUX_DIRECT_PTRACE_CONNECTION_H_
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#define CRASHPAD_UTIL_LINUX_DIRECT_PTRACE_CONNECTION_H_
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#include <sys/types.h>
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#include <memory>
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#include <vector>
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#include "base/macros.h"
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#include "util/linux/ptrace_connection.h"
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#include "util/linux/ptracer.h"
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#include "util/linux/scoped_ptrace_attach.h"
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#include "util/misc/initialization_state_dcheck.h"
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#include "util/process/process_memory_linux.h"
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namespace crashpad {
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//! \brief Manages a direct `ptrace` connection to a process.
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//!
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//! This class is used when the current process has `ptrace` capabilities for
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//! the target process.
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class DirectPtraceConnection : public PtraceConnection {
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public:
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DirectPtraceConnection();
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~DirectPtraceConnection();
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//! \brief Initializes this connection for the process whose process ID is
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//! \a pid.
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//!
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//! The main thread of the process is automatically attached by this call.
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//!
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//! \param[in] pid The process ID of the process to connect to.
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//! \return `true` on success. `false` on failure with a message logged.
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bool Initialize(pid_t pid);
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// PtraceConnection:
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pid_t GetProcessID() override;
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bool Attach(pid_t tid) override;
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bool Is64Bit() override;
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bool GetThreadInfo(pid_t tid, ThreadInfo* info) override;
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bool ReadFileContents(const base::FilePath& path,
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std::string* contents) override;
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ProcessMemory* Memory() override;
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bool Threads(std::vector<pid_t>* threads) override;
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private:
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std::vector<std::unique_ptr<ScopedPtraceAttach>> attachments_;
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ProcessMemoryLinux memory_;
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pid_t pid_;
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Ptracer ptracer_;
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InitializationStateDcheck initialized_;
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DISALLOW_COPY_AND_ASSIGN(DirectPtraceConnection);
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};
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} // namespace crashpad
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#endif // CRASHPAD_UTIL_LINUX_DIRECT_PTRACE_CONNECTION_H_
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