1 /*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "fuse_adb_provider.h"
18
19 #include <errno.h>
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <string.h>
23
24 #include <functional>
25
26 #include "adb.h"
27 #include "adb_io.h"
28 #include "fuse_sideload.h"
29
read_block_adb(const adb_data & ad,uint32_t block,uint8_t * buffer,uint32_t fetch_size)30 int read_block_adb(const adb_data& ad, uint32_t block, uint8_t* buffer, uint32_t fetch_size) {
31 if (!WriteFdFmt(ad.sfd, "%08u", block)) {
32 fprintf(stderr, "failed to write to adb host: %s\n", strerror(errno));
33 return -EIO;
34 }
35
36 if (!ReadFdExactly(ad.sfd, buffer, fetch_size)) {
37 fprintf(stderr, "failed to read from adb host: %s\n", strerror(errno));
38 return -EIO;
39 }
40
41 return 0;
42 }
43
run_adb_fuse(int sfd,uint64_t file_size,uint32_t block_size)44 int run_adb_fuse(int sfd, uint64_t file_size, uint32_t block_size) {
45 adb_data ad;
46 ad.sfd = sfd;
47 ad.file_size = file_size;
48 ad.block_size = block_size;
49
50 provider_vtab vtab;
51 vtab.read_block = std::bind(read_block_adb, ad, std::placeholders::_1, std::placeholders::_2,
52 std::placeholders::_3);
53 vtab.close = [&ad]() { WriteFdExactly(ad.sfd, "DONEDONE"); };
54
55 return run_fuse_sideload(vtab, file_size, block_size);
56 }
57