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/*
* Copyright (C) 2014 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 "fuse_adb_provider.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <functional>
#include "adb.h"
#include "adb_io.h"
#include "fuse_sideload.h"
bool FuseAdbDataProvider::ReadBlockAlignedData(uint8_t* buffer, uint32_t fetch_size,
uint32_t start_block) const {
if (!WriteFdFmt(fd_, "%08u", start_block)) {
fprintf(stderr, "failed to write to adb host: %s\n", strerror(errno));
return false;
}
if (!ReadFdExactly(fd_, buffer, fetch_size)) {
fprintf(stderr, "failed to read from adb host: %s\n", strerror(errno));
return false;
}
return true;
}
void FuseAdbDataProvider::Close() {
WriteFdExactly(fd_, "DONEDONE");
}
int run_adb_fuse(android::base::unique_fd&& sfd, uint64_t file_size, uint32_t block_size) {
FuseAdbDataProvider adb_data_reader(std::move(sfd), file_size, block_size);
provider_vtab vtab;
vtab.read_block = std::bind(&FuseAdbDataProvider::ReadBlockAlignedData, &adb_data_reader,
std::placeholders::_2, std::placeholders::_3, std::placeholders::_1);
vtab.close = [&adb_data_reader]() { adb_data_reader.Close(); };
return run_fuse_sideload(vtab, file_size, block_size);
}
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