1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
/*
* Copyright (C) 2012 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 <unistd.h>
#include <dirent.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <signal.h>
#include <fcntl.h>
#include "ui.h"
#include "cutils/properties.h"
#include "install.h"
#include "common.h"
#include "adb_install.h"
#include "minadbd/fuse_adb_provider.h"
#include "fuse_sideload.h"
static RecoveryUI* ui = NULL;
static pthread_t sideload_thread;
static void
set_usb_driver(bool enabled) {
int fd = open("/sys/class/android_usb/android0/enable", O_WRONLY);
if (fd < 0) {
ui->Print("failed to open driver control: %s\n", strerror(errno));
return;
}
if (TEMP_FAILURE_RETRY(write(fd, enabled ? "1" : "0", 1)) == -1) {
ui->Print("failed to set driver control: %s\n", strerror(errno));
}
if (close(fd) < 0) {
ui->Print("failed to close driver control: %s\n", strerror(errno));
}
}
static void
stop_adbd() {
property_set("ctl.stop", "adbd");
set_usb_driver(false);
}
static void
maybe_restart_adbd() {
if (is_ro_debuggable()) {
ui->Print("Restarting adbd...\n");
set_usb_driver(true);
property_set("ctl.start", "adbd");
}
}
struct sideload_data {
bool* wipe_cache;
const char* install_file;
bool cancel;
int result;
};
static struct sideload_data sideload_data;
// How long (in seconds) we wait for the host to start sending us a
// package, before timing out.
#define ADB_INSTALL_TIMEOUT 300
void *adb_sideload_thread(void* v) {
pid_t child;
if ((child = fork()) == 0) {
execl("/sbin/recovery", "recovery", "--adbd", NULL);
_exit(-1);
}
time_t start_time = time(NULL);
time_t now = start_time;
// FUSE_SIDELOAD_HOST_PATHNAME will start to exist once the host
// connects and starts serving a package. Poll for its
// appearance. (Note that inotify doesn't work with FUSE.)
int result = INSTALL_NONE;
int status = -1;
struct stat st;
while (now - start_time < ADB_INSTALL_TIMEOUT) {
/*
* Exit if either:
* - The adb child process dies, or
* - The ui tells us to cancel
*/
if (kill(child, 0) != 0) {
result = INSTALL_ERROR;
break;
}
if (sideload_data.cancel) {
break;
}
status = stat(FUSE_SIDELOAD_HOST_PATHNAME, &st);
if (status == 0) {
break;
}
if (errno != ENOENT && errno != ENOTCONN) {
ui->Print("\nError %s waiting for package\n\n", strerror(errno));
result = INSTALL_ERROR;
break;
}
sleep(1);
now = time(NULL);
}
if (status == 0) {
// Signal UI thread that we can no longer cancel
ui->CancelWaitKey();
result = install_package(FUSE_SIDELOAD_HOST_PATHNAME,
sideload_data.wipe_cache,
sideload_data.install_file,
false);
sideload_data.result = result;
}
// Ensure adb exits
kill(child, SIGTERM);
waitpid(child, &status, 0);
if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
if (WEXITSTATUS(status) == 3) {
ui->Print("\nYou need adb 1.0.32 or newer to sideload\nto this device.\n\n");
} else if (!WIFSIGNALED(status)) {
ui->Print("\n(adbd status %d)\n", WEXITSTATUS(status));
}
}
LOGI("sideload thread finished\n");
return NULL;
}
void
start_sideload(RecoveryUI* ui_, bool* wipe_cache, const char* install_file) {
modified_flash = true;
ui = ui_;
stop_adbd();
set_usb_driver(true);
ui->Print("\n\nNow send the package you want to apply\n"
"to the device with \"adb sideload <filename>\"...\n");
sideload_data.wipe_cache = wipe_cache;
sideload_data.install_file = install_file;
sideload_data.cancel = false;
sideload_data.result = INSTALL_NONE;
pthread_create(&sideload_thread, NULL, &adb_sideload_thread, NULL);
}
void stop_sideload() {
sideload_data.cancel = true;
}
int wait_sideload() {
set_perf_mode(true);
pthread_join(sideload_thread, NULL);
ui->FlushKeys();
maybe_restart_adbd();
set_perf_mode(false);
return sideload_data.result;
}
|
