blob: 951db5fdbc0901a616a0d8358e2a3c8d93c7a94a [file] [log] [blame]
// Copyright 2019 The Cobalt 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 "starboard/elf_loader/file_impl.h"
#include "starboard/common/log.h"
#include "starboard/elf_loader/log.h"
namespace {
void LogLastError(const char* msg) {
const int kErrorMessageBufferSize = 256;
char msgbuf[kErrorMessageBufferSize];
SbSystemError error_code = SbSystemGetLastError();
if (SbSystemGetErrorString(error_code, msgbuf, kErrorMessageBufferSize) > 0) {
SB_LOG(ERROR) << msg << ": " << msgbuf;
}
}
} // namespace
namespace starboard {
namespace elf_loader {
FileImpl::FileImpl() : file_(NULL) {}
FileImpl::~FileImpl() {
Close();
}
bool FileImpl::Open(const char* name) {
SB_DLOG(INFO) << "Loading: " << name;
name_ = name;
file_ = SbFileOpen(name, kSbFileOpenOnly | kSbFileRead, NULL, NULL);
if (!file_) {
return false;
}
return true;
}
bool FileImpl::ReadFromOffset(int64_t offset, char* buffer, int size) {
if (!file_) {
return false;
}
int64_t ret = SbFileSeek(file_, kSbFileFromBegin, offset);
SB_DLOG(INFO) << "SbFileSeek: ret=" << ret;
if (ret == -1) {
LogLastError("SbFileSeek: failed");
return false;
}
int count = SbFileReadAll(file_, buffer, size);
SB_DLOG(INFO) << "SbFileReadAll: count=" << count;
if (count == -1) {
LogLastError("SbFileReadAll failed");
return false;
}
return true;
}
void FileImpl::Close() {
if (file_) {
SbFileClose(file_);
}
}
const std::string& FileImpl::GetName() {
return name_;
}
} // namespace elf_loader
} // namespace starboard