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a9be1b1403
Currently, ProcessMemory is only implemented for Linux and Fuchsia. Implement the interface for Windows as well and re-factor tests to support it, mostly this consists of using a new ScopedGuardedPage class instead of ScopedMmap in the ProcessMemory tests. BUG=crashpad:262 Change-Id: I1b42718972be5ad838d12356d09f764053f09e4f Reviewed-on: https://chromium-review.googlesource.com/c/1278829 Commit-Queue: Vlad Tsyrklevich <vtsyrklevich@chromium.org> Reviewed-by: Mark Mentovai <mark@chromium.org>
94 lines
3.2 KiB
C++
94 lines
3.2 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/process/process_memory_range.h"
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#include <algorithm>
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#include <limits>
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#include "base/logging.h"
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namespace crashpad {
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ProcessMemoryRange::ProcessMemoryRange()
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: memory_(nullptr), range_(), initialized_() {}
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ProcessMemoryRange::~ProcessMemoryRange() {}
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bool ProcessMemoryRange::Initialize(const ProcessMemory* memory,
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bool is_64_bit,
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VMAddress base,
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VMSize size) {
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INITIALIZATION_STATE_SET_INITIALIZING(initialized_);
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memory_ = memory;
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range_.SetRange(is_64_bit, base, size);
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if (!range_.IsValid()) {
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LOG(ERROR) << "invalid range";
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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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bool ProcessMemoryRange::Initialize(const ProcessMemory* memory,
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bool is_64_bit) {
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VMSize max = is_64_bit ? std::numeric_limits<uint64_t>::max()
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: std::numeric_limits<uint32_t>::max();
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return Initialize(memory, is_64_bit, 0, max);
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}
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bool ProcessMemoryRange::Initialize(const ProcessMemoryRange& other) {
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return Initialize(other.memory_,
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other.range_.Is64Bit(),
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other.range_.Base(),
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other.range_.Size());
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}
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bool ProcessMemoryRange::RestrictRange(VMAddress base, VMSize size) {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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CheckedVMAddressRange new_range(range_.Is64Bit(), base, size);
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if (!new_range.IsValid() || !range_.ContainsRange(new_range)) {
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LOG(ERROR) << "invalid range";
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return false;
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}
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range_ = new_range;
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return true;
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}
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bool ProcessMemoryRange::Read(VMAddress address,
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size_t size,
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void* buffer) const {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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CheckedVMAddressRange read_range(range_.Is64Bit(), address, size);
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if (!read_range.IsValid() || !range_.ContainsRange(read_range)) {
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LOG(ERROR) << "read out of range";
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return false;
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}
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return memory_->Read(address, size, buffer);
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}
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bool ProcessMemoryRange::ReadCStringSizeLimited(VMAddress address,
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size_t size,
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std::string* string) const {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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if (!range_.ContainsValue(address)) {
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LOG(ERROR) << "read out of range";
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return false;
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}
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size = std::min(size, base::checked_cast<size_t>(range_.End() - address));
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return memory_->ReadCStringSizeLimited(address, size, string);
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}
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} // namespace crashpad
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