mirror of
https://github.com/chromium/crashpad.git
synced 2024-12-29 08:39:44 +08:00
1c87c92932
Bug: crashpad:30 Change-Id: I0debf3b47d0f79c5c5397e5ad2faf760191381ec Reviewed-on: https://chromium-review.googlesource.com/553657 Commit-Queue: Joshua Peraza <jperaza@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.
|
|
//
|
|
// 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.
|
|
|
|
#include "util/linux/process_memory_range.h"
|
|
|
|
#include <algorithm>
|
|
#include <limits>
|
|
|
|
#include "base/logging.h"
|
|
|
|
namespace crashpad {
|
|
|
|
ProcessMemoryRange::ProcessMemoryRange()
|
|
: memory_(nullptr), range_(), initialized_() {}
|
|
|
|
ProcessMemoryRange::~ProcessMemoryRange() {}
|
|
|
|
bool ProcessMemoryRange::Initialize(const ProcessMemory* memory,
|
|
bool is_64_bit,
|
|
LinuxVMAddress base,
|
|
LinuxVMSize size) {
|
|
INITIALIZATION_STATE_SET_INITIALIZING(initialized_);
|
|
memory_ = memory;
|
|
range_.SetRange(is_64_bit, base, size);
|
|
if (!range_.IsValid()) {
|
|
LOG(ERROR) << "invalid range";
|
|
return false;
|
|
}
|
|
INITIALIZATION_STATE_SET_VALID(initialized_);
|
|
return true;
|
|
}
|
|
|
|
bool ProcessMemoryRange::Initialize(const ProcessMemory* memory,
|
|
bool is_64_bit) {
|
|
LinuxVMSize max = is_64_bit ? std::numeric_limits<uint64_t>::max()
|
|
: std::numeric_limits<uint32_t>::max();
|
|
return Initialize(memory, is_64_bit, 0, max);
|
|
}
|
|
|
|
bool ProcessMemoryRange::Initialize(const ProcessMemoryRange& other) {
|
|
return Initialize(other.memory_,
|
|
other.range_.Is64Bit(),
|
|
other.range_.Base(),
|
|
other.range_.Size());
|
|
}
|
|
|
|
bool ProcessMemoryRange::RestrictRange(LinuxVMAddress base, LinuxVMSize size) {
|
|
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
|
|
CheckedLinuxAddressRange new_range(range_.Is64Bit(), base, size);
|
|
if (!new_range.IsValid() || !range_.ContainsRange(new_range)) {
|
|
LOG(ERROR) << "invalid range";
|
|
return false;
|
|
}
|
|
range_ = new_range;
|
|
return true;
|
|
}
|
|
|
|
bool ProcessMemoryRange::Read(LinuxVMAddress address,
|
|
size_t size,
|
|
void* buffer) const {
|
|
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
|
|
CheckedLinuxAddressRange read_range(range_.Is64Bit(), address, size);
|
|
if (!read_range.IsValid() || !range_.ContainsRange(read_range)) {
|
|
LOG(ERROR) << "read out of range";
|
|
return false;
|
|
}
|
|
return memory_->Read(address, size, buffer);
|
|
}
|
|
|
|
bool ProcessMemoryRange::ReadCStringSizeLimited(LinuxVMAddress address,
|
|
size_t size,
|
|
std::string* string) const {
|
|
INITIALIZATION_STATE_DCHECK_VALID(initialized_);
|
|
if (!range_.ContainsValue(address)) {
|
|
LOG(ERROR) << "read out of range";
|
|
return false;
|
|
}
|
|
size = std::min(static_cast<LinuxVMSize>(size), range_.End() - address);
|
|
return memory_->ReadCStringSizeLimited(address, size, string);
|
|
}
|
|
|
|
} // namespace crashpad
|