blob: e9262858c0444f48c0c7182d8183a933428170b1 [file] [log] [blame]
Doug Zongker18a78e02014-07-10 07:31:46 -07001/*
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>
Elliott Hughescd3c55a2015-01-29 20:50:08 -080019#include <string.h>
Doug Zongker18a78e02014-07-10 07:31:46 -070020#include <errno.h>
21
22#include "adb.h"
23#include "fuse_sideload.h"
24
25struct adb_data {
26 int sfd; // file descriptor for the adb channel
27
28 uint64_t file_size;
29 uint32_t block_size;
30};
31
32static int read_block_adb(void* cookie, uint32_t block, uint8_t* buffer, uint32_t fetch_size) {
33 struct adb_data* ad = (struct adb_data*)cookie;
34
35 char buf[10];
36 snprintf(buf, sizeof(buf), "%08u", block);
37 if (writex(ad->sfd, buf, 8) < 0) {
38 fprintf(stderr, "failed to write to adb host: %s\n", strerror(errno));
39 return -EIO;
40 }
41
42 if (readx(ad->sfd, buffer, fetch_size) < 0) {
43 fprintf(stderr, "failed to read from adb host: %s\n", strerror(errno));
44 return -EIO;
45 }
46
47 return 0;
48}
49
50static void close_adb(void* cookie) {
51 struct adb_data* ad = (struct adb_data*)cookie;
52
53 writex(ad->sfd, "DONEDONE", 8);
54}
55
56int run_adb_fuse(int sfd, uint64_t file_size, uint32_t block_size) {
57 struct adb_data ad;
58 struct provider_vtab vtab;
59
60 ad.sfd = sfd;
61 ad.file_size = file_size;
62 ad.block_size = block_size;
63
64 vtab.read_block = read_block_adb;
65 vtab.close = close_adb;
66
67 return run_fuse_sideload(&vtab, &ad, file_size, block_size);
68}