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70ccb76751
This attempts to be somewhat forward-compatible with upcoming additions to the Data struct, most importantly to not lose the client ID if we ever need to downgrade / read data from a future crashpad version. Bug: 42310127 Change-Id: Ic3914fdd8460f4f41e5bb523d5c52361767880dd Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/5915193 Reviewed-by: Mark Mentovai <mark@chromium.org> Reviewed-by: Jesse McKenna <jessemckenna@google.com> Commit-Queue: Peter Boström <pbos@chromium.org>
97 lines
2.5 KiB
C++
97 lines
2.5 KiB
C++
// Copyright 2015 The Crashpad Authors
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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/file/file_reader.h"
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#include "base/check_op.h"
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#include "base/logging.h"
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#include "base/numerics/safe_conversions.h"
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#include "build/build_config.h"
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namespace crashpad {
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bool FileReaderInterface::ReadExactly(void* data, size_t size) {
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return internal::ReadExactly(
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[this](bool can_log, void* buffer, size_t size) {
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DCHECK(can_log);
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return Read(buffer, size);
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},
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true,
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data,
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size);
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}
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WeakFileHandleFileReader::WeakFileHandleFileReader(FileHandle file_handle)
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: file_handle_(file_handle) {
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}
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WeakFileHandleFileReader::~WeakFileHandleFileReader() {
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}
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FileOperationResult WeakFileHandleFileReader::Read(void* data, size_t size) {
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DCHECK_NE(file_handle_, kInvalidFileHandle);
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base::checked_cast<FileOperationResult>(size);
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FileOperationResult rv = ReadFile(file_handle_, data, size);
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if (rv < 0) {
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PLOG(ERROR) << internal::kNativeReadFunctionName;
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return -1;
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}
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return rv;
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}
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FileOffset WeakFileHandleFileReader::Seek(FileOffset offset, int whence) {
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DCHECK_NE(file_handle_, kInvalidFileHandle);
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return LoggingSeekFile(file_handle_, offset, whence);
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}
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FileReader::FileReader()
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: file_(),
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weak_file_handle_file_reader_(kInvalidFileHandle) {
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}
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FileReader::~FileReader() {
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}
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bool FileReader::Open(const base::FilePath& path) {
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CHECK(!file_.is_valid());
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file_.reset(LoggingOpenFileForRead(path));
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if (!file_.is_valid()) {
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return false;
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}
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weak_file_handle_file_reader_.set_file_handle(file_.get());
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return true;
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}
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void FileReader::Close() {
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CHECK(file_.is_valid());
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weak_file_handle_file_reader_.set_file_handle(kInvalidFileHandle);
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file_.reset();
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}
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FileOperationResult FileReader::Read(void* data, size_t size) {
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DCHECK(file_.is_valid());
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return weak_file_handle_file_reader_.Read(data, size);
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}
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FileOffset FileReader::Seek(FileOffset offset, int whence) {
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DCHECK(file_.is_valid());
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return weak_file_handle_file_reader_.Seek(offset, whence);
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}
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} // namespace crashpad
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