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
|
/*
* 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 "adb_install.h"
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <android-base/logging.h>
#include <android-base/properties.h>
#include "common.h"
#include "fuse_sideload.h"
#include "install.h"
#include "ui.h"
int apply_from_adb(bool* wipe_cache) {
// Save the usb state to restore after the sideload operation.
std::string usb_state = android::base::GetProperty("sys.usb.state", "none");
// Clean up state and stop adbd.
if (usb_state != "none" && !SetUsbConfig("none")) {
LOG(ERROR) << "Failed to clear USB config";
return INSTALL_ERROR;
}
ui->Print(
"\n\nNow send the package you want to apply\n"
"to the device with \"adb sideload <filename>\"...\n");
pid_t child;
if ((child = fork()) == 0) {
execl("/system/bin/recovery", "recovery", "--adbd", nullptr);
_exit(EXIT_FAILURE);
}
if (!SetUsbConfig("sideload")) {
LOG(ERROR) << "Failed to set usb config to sideload";
return INSTALL_ERROR;
}
// How long (in seconds) we wait for the host to start sending us a package, before timing out.
static constexpr int ADB_INSTALL_TIMEOUT = 300;
// 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_ERROR;
int status;
bool waited = false;
for (int i = 0; i < ADB_INSTALL_TIMEOUT; ++i) {
if (waitpid(child, &status, WNOHANG) != 0) {
result = INSTALL_ERROR;
waited = true;
break;
}
struct stat st;
if (stat(FUSE_SIDELOAD_HOST_PATHNAME, &st) != 0) {
if (errno == ENOENT && i < ADB_INSTALL_TIMEOUT - 1) {
sleep(1);
continue;
} else {
ui->Print("\nTimed out waiting for package.\n\n");
result = INSTALL_ERROR;
kill(child, SIGKILL);
break;
}
}
result = install_package(FUSE_SIDELOAD_HOST_PATHNAME, wipe_cache, false, 0);
break;
}
if (!waited) {
// Calling stat() on this magic filename signals the minadbd subprocess to shut down.
struct stat st;
stat(FUSE_SIDELOAD_HOST_EXIT_PATHNAME, &st);
// TODO: there should be a way to cancel waiting for a package (by pushing some button combo on
// the device). For now you just have to 'adb sideload' a file that's not a valid package, like
// "/dev/null".
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));
}
}
// Clean up before switching to the older state, for example setting the state
// to none sets sys/class/android_usb/android0/enable to 0.
if (!SetUsbConfig("none")) {
LOG(ERROR) << "Failed to clear USB config";
}
if (usb_state != "none") {
if (!SetUsbConfig(usb_state)) {
LOG(ERROR) << "Failed to set USB config to " << usb_state;
}
}
return result;
}
|
