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 <stdlib.h>
18 #include <stdio.h>
19 #include <string.h>
20 #include <errno.h>
21
22 #include "adb.h"
23 #include "adb_io.h"
24 #include "fuse_adb_provider.h"
25 #include "fuse_sideload.h"
26
read_block_adb(void * data,uint32_t block,uint8_t * buffer,uint32_t fetch_size)27 int read_block_adb(void* data, uint32_t block, uint8_t* buffer, uint32_t fetch_size) {
28 adb_data* ad = reinterpret_cast<adb_data*>(data);
29
30 if (!WriteFdFmt(ad->sfd, "%08u", block)) {
31 fprintf(stderr, "failed to write to adb host: %s\n", strerror(errno));
32 return -EIO;
33 }
34
35 if (!ReadFdExactly(ad->sfd, buffer, fetch_size)) {
36 fprintf(stderr, "failed to read from adb host: %s\n", strerror(errno));
37 return -EIO;
38 }
39
40 return 0;
41 }
42
close_adb(void * data)43 static void close_adb(void* data) {
44 adb_data* ad = reinterpret_cast<adb_data*>(data);
45 WriteFdExactly(ad->sfd, "DONEDONE");
46 }
47
run_adb_fuse(int sfd,uint64_t file_size,uint32_t block_size)48 int run_adb_fuse(int sfd, uint64_t file_size, uint32_t block_size) {
49 adb_data ad;
50 ad.sfd = sfd;
51 ad.file_size = file_size;
52 ad.block_size = block_size;
53
54 provider_vtab vtab;
55 vtab.read_block = read_block_adb;
56 vtab.close = close_adb;
57
58 return run_fuse_sideload(&vtab, &ad, file_size, block_size);
59 }
60