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