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//
// Copyright (C) 2017 The Android Open Source Project
//
// 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 "update_engine/payload_consumer/fec_file_descriptor.h"
#include <base/logging.h>
namespace chromeos_update_engine {
bool FecFileDescriptor::Open(const char* path, int flags) {
return Open(path, flags, 0600);
}
bool FecFileDescriptor::Open(const char* path, int flags, mode_t mode) {
if (!fh_.open(path, flags, mode))
return false;
if (!fh_.has_ecc()) {
LOG(ERROR) << "No ECC data in the passed file";
fh_.close();
return false;
}
fec_status status;
if (!fh_.get_status(status)) {
LOG(ERROR) << "Couldn't load ECC status";
fh_.close();
return false;
}
dev_size_ = status.data_size;
return true;
}
ssize_t FecFileDescriptor::Read(void* buf, size_t count) {
return fh_.read(buf, count);
}
ssize_t FecFileDescriptor::Write(const void* buf, size_t count) {
errno = EROFS;
return -1;
}
off64_t FecFileDescriptor::Seek(off64_t offset, int whence) {
if (fh_.seek(offset, whence)) {
return offset;
}
return -1;
}
uint64_t FecFileDescriptor::BlockDevSize() {
return dev_size_;
}
bool FecFileDescriptor::BlkIoctl(int request,
uint64_t start,
uint64_t length,
int* result) {
// No IOCTL pass-through in this mode.
return false;
}
bool FecFileDescriptor::Close() {
return fh_.close();
}
} // namespace chromeos_update_engine
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