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10fd672bde
This change: 1. Updates the broker's memory reading protocol to enable short reads. 2. Updates Ptracer to allow short reads. 3. Updates the broker to allow reading from a memory file. 4. Updates the broker's default file root to be "/proc/[pid]/". 5. Adds PtraceConnection::Memory() to produce a suitable memory reader for a connection type. Bug: crashpad:30 Change-Id: I8c004016065d981acd1fa74ad1b8e51ce07c7c85 Reviewed-on: https://chromium-review.googlesource.com/991455 Reviewed-by: Mark Mentovai <mark@chromium.org> Commit-Queue: Joshua Peraza <jperaza@chromium.org>
85 lines
2.3 KiB
C++
85 lines
2.3 KiB
C++
// 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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#include "util/linux/direct_ptrace_connection.h"
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#include <utility>
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#include "util/file/file_io.h"
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namespace crashpad {
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DirectPtraceConnection::DirectPtraceConnection()
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: PtraceConnection(),
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attachments_(),
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memory_(),
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pid_(-1),
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ptracer_(/* can_log= */ true),
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initialized_() {}
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DirectPtraceConnection::~DirectPtraceConnection() {}
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bool DirectPtraceConnection::Initialize(pid_t pid) {
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INITIALIZATION_STATE_SET_INITIALIZING(initialized_);
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if (!Attach(pid) || !ptracer_.Initialize(pid)) {
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return false;
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}
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pid_ = pid;
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if (!memory_.Initialize(pid)) {
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return false;
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}
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INITIALIZATION_STATE_SET_VALID(initialized_);
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return true;
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}
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pid_t DirectPtraceConnection::GetProcessID() {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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return pid_;
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}
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bool DirectPtraceConnection::Attach(pid_t tid) {
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std::unique_ptr<ScopedPtraceAttach> attach(new ScopedPtraceAttach);
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if (!attach->ResetAttach(tid)) {
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return false;
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}
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attachments_.push_back(std::move(attach));
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return true;
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}
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bool DirectPtraceConnection::Is64Bit() {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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return ptracer_.Is64Bit();
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}
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bool DirectPtraceConnection::GetThreadInfo(pid_t tid, ThreadInfo* info) {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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return ptracer_.GetThreadInfo(tid, info);
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}
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bool DirectPtraceConnection::ReadFileContents(const base::FilePath& path,
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std::string* contents) {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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return LoggingReadEntireFile(path, contents);
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}
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ProcessMemory* DirectPtraceConnection::Memory() {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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return &memory_;
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}
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} // namespace crashpad
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