72 lines
2.5 KiB
C++
72 lines
2.5 KiB
C++
// Copyright 2017 The Crashpad Authors. All rights reserved.
|
|
//
|
|
// 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.
|
|
|
|
#ifndef CRASHPAD_UTIL_LINUX_SCOPED_PTRACE_ATTACH_H_
|
|
#define CRASHPAD_UTIL_LINUX_SCOPED_PTRACE_ATTACH_H_
|
|
|
|
#include <sys/types.h>
|
|
|
|
|
|
namespace crashpad {
|
|
|
|
//! \brief Attaches to the process with process ID \a pid and blocks until the
|
|
//! target process has stopped by calling `waitpid()`.
|
|
//!
|
|
//! \param pid The process ID of the process to attach to.
|
|
//! \param can_log Whether this function may log messages on failure.
|
|
//! \return `true` on success. `false` on failure with a message logged if \a
|
|
//! can_log is `true`.
|
|
bool PtraceAttach(pid_t pid, bool can_log = true);
|
|
|
|
//! \brief Detaches the process with process ID \a pid. The process must
|
|
//! already be ptrace attached.
|
|
//!
|
|
//! \param pid The process ID of the process to detach.
|
|
//! \param can_log Whether this function may log messages on failure.
|
|
//! \return `true` on success. `false` on failure with a message logged if \a
|
|
//! ca_log is `true `true`
|
|
bool PtraceDetach(pid_t pid, bool can_log = true);
|
|
|
|
//! \brief Maintains a `ptrace()` attachment to a process.
|
|
//!
|
|
//! On destruction, the process will be detached.
|
|
class ScopedPtraceAttach {
|
|
public:
|
|
ScopedPtraceAttach();
|
|
|
|
ScopedPtraceAttach(const ScopedPtraceAttach&) = delete;
|
|
ScopedPtraceAttach& operator=(const ScopedPtraceAttach&) = delete;
|
|
|
|
~ScopedPtraceAttach();
|
|
|
|
//! \brief Detaches from the process by calling `ptrace()`.
|
|
//!
|
|
//! \return `true` on success. `false` on failure, with a message logged.
|
|
bool Reset();
|
|
|
|
//! \brief Detaches from any previously attached process, attaches to the
|
|
//! process with process ID \a pid, and blocks until the target process
|
|
//! has stopped by calling `waitpid()`.
|
|
//!
|
|
//! \return `true` on success. `false` on failure, with a message logged.
|
|
bool ResetAttach(pid_t pid);
|
|
|
|
private:
|
|
pid_t pid_;
|
|
};
|
|
|
|
} // namespace crashpad
|
|
|
|
#endif // CRASHPAD_UTIL_LINUX_SCOPED_PTRACE_ATTACH_H_
|