1 /*
2 * Copyright (C) 2008 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 <errno.h>
18 #include <fcntl.h>
19 #include <poll.h>
20 #include <signal.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <unistd.h>
25
26 #include <sys/select.h>
27 #include <sys/time.h>
28 #include <sys/types.h>
29 #include <sys/un.h>
30
31 #include "Utils.h"
32 #include "android/os/IVold.h"
33
34 #include <android-base/logging.h>
35 #include <android-base/parsebool.h>
36 #include <android-base/parseint.h>
37 #include <android-base/stringprintf.h>
38 #include <android-base/strings.h>
39 #include <binder/IServiceManager.h>
40 #include <binder/Status.h>
41 #include <utils/Errors.h>
42
43 #include <private/android_filesystem_config.h>
44
45 static void usage(char* progname);
46
getServiceAggressive()47 static android::sp<android::IBinder> getServiceAggressive() {
48 android::sp<android::IBinder> res;
49 auto sm = android::defaultServiceManager();
50 auto name = android::String16("vold");
51 for (int i = 0; i < 5000; i++) {
52 res = sm->checkService(name);
53 if (res) {
54 LOG(VERBOSE) << "Waited " << (i * 10) << "ms for vold";
55 break;
56 }
57 usleep(10000); // 10ms
58 }
59 return res;
60 }
61
checkStatus(std::vector<std::string> & cmd,android::binder::Status status)62 static void checkStatus(std::vector<std::string>& cmd, android::binder::Status status) {
63 if (status.isOk()) return;
64 std::string command = ::android::base::Join(cmd, " ");
65 LOG(ERROR) << "Command: " << command << " Failed: " << status.toString8().string();
66 exit(ENOTTY);
67 }
68
bindkeys(std::vector<std::string> & args,const android::sp<android::os::IVold> & vold)69 static void bindkeys(std::vector<std::string>& args, const android::sp<android::os::IVold>& vold) {
70 std::string raw_bytes;
71 const char* seed_value;
72
73 seed_value = getenv("SEED_VALUE");
74 if (seed_value == NULL) {
75 LOG(ERROR) << "Empty seed";
76 exit(EINVAL);
77 }
78
79 android::status_t status = android::vold::HexToStr(seed_value, raw_bytes);
80 if (status != android::OK) {
81 LOG(ERROR) << "Extraction of seed failed: " << status;
82 exit(status);
83 }
84
85 std::vector<uint8_t> seed{raw_bytes.begin(), raw_bytes.end()};
86 checkStatus(args, vold->setStorageBindingSeed(seed));
87 }
88
main(int argc,char ** argv)89 int main(int argc, char** argv) {
90 setenv("ANDROID_LOG_TAGS", "*:v", 1);
91 if (getppid() == 1) {
92 // If init is calling us then it's during boot and we should log to kmsg
93 android::base::InitLogging(argv, &android::base::KernelLogger);
94 } else {
95 android::base::InitLogging(argv, &android::base::StderrLogger);
96 }
97 std::vector<std::string> args(argv + 1, argv + argc);
98
99 if (args.size() > 0 && args[0] == "--wait") {
100 // Just ignore the --wait flag
101 args.erase(args.begin());
102 }
103
104 if (args.size() < 2) {
105 usage(argv[0]);
106 exit(5);
107 }
108 android::sp<android::IBinder> binder = getServiceAggressive();
109 if (!binder) {
110 LOG(ERROR) << "Failed to obtain vold Binder";
111 exit(EINVAL);
112 }
113 auto vold = android::interface_cast<android::os::IVold>(binder);
114
115 if (args[0] == "cryptfs" && args[1] == "enablefilecrypto") {
116 checkStatus(args, vold->fbeEnable());
117 } else if (args[0] == "cryptfs" && args[1] == "init_user0") {
118 checkStatus(args, vold->initUser0());
119 } else if (args[0] == "volume" && args[1] == "abort_fuse") {
120 checkStatus(args, vold->abortFuse());
121 } else if (args[0] == "volume" && args[1] == "shutdown") {
122 checkStatus(args, vold->shutdown());
123 } else if (args[0] == "volume" && args[1] == "reset") {
124 checkStatus(args, vold->reset());
125 } else if (args[0] == "volume" && args[1] == "getStorageSize") {
126 int64_t size;
127 checkStatus(args, vold->getStorageSize(&size));
128 LOG(INFO) << size;
129 } else if (args[0] == "cryptfs" && args[1] == "bindkeys") {
130 bindkeys(args, vold);
131 } else if (args[0] == "cryptfs" && args[1] == "mountFstab" && args.size() == 5) {
132 checkStatus(args, vold->mountFstab(args[2], args[3], args[4]));
133 } else if (args[0] == "cryptfs" && args[1] == "encryptFstab" && args.size() == 7) {
134 auto shouldFormat = android::base::ParseBool(args[4]);
135 if (shouldFormat == android::base::ParseBoolResult::kError) exit(EINVAL);
136 checkStatus(args, vold->encryptFstab(args[2], args[3],
137 shouldFormat == android::base::ParseBoolResult::kTrue,
138 args[5], args[6]));
139 } else if (args[0] == "checkpoint" && args[1] == "supportsCheckpoint" && args.size() == 2) {
140 bool supported = false;
141 checkStatus(args, vold->supportsCheckpoint(&supported));
142 return supported ? 1 : 0;
143 } else if (args[0] == "checkpoint" && args[1] == "supportsBlockCheckpoint" &&
144 args.size() == 2) {
145 bool supported = false;
146 checkStatus(args, vold->supportsBlockCheckpoint(&supported));
147 return supported ? 1 : 0;
148 } else if (args[0] == "checkpoint" && args[1] == "supportsFileCheckpoint" && args.size() == 2) {
149 bool supported = false;
150 checkStatus(args, vold->supportsFileCheckpoint(&supported));
151 return supported ? 1 : 0;
152 } else if (args[0] == "checkpoint" && args[1] == "startCheckpoint" && args.size() == 3) {
153 int retry;
154 if (!android::base::ParseInt(args[2], &retry)) exit(EINVAL);
155 checkStatus(args, vold->startCheckpoint(retry));
156 } else if (args[0] == "checkpoint" && args[1] == "needsCheckpoint" && args.size() == 2) {
157 bool enabled = false;
158 checkStatus(args, vold->needsCheckpoint(&enabled));
159 return enabled ? 1 : 0;
160 } else if (args[0] == "checkpoint" && args[1] == "needsRollback" && args.size() == 2) {
161 bool enabled = false;
162 checkStatus(args, vold->needsRollback(&enabled));
163 return enabled ? 1 : 0;
164 } else if (args[0] == "checkpoint" && args[1] == "commitChanges" && args.size() == 2) {
165 checkStatus(args, vold->commitChanges());
166 } else if (args[0] == "checkpoint" && args[1] == "prepareCheckpoint" && args.size() == 2) {
167 checkStatus(args, vold->prepareCheckpoint());
168 } else if (args[0] == "checkpoint" && args[1] == "restoreCheckpoint" && args.size() == 3) {
169 checkStatus(args, vold->restoreCheckpoint(args[2]));
170 } else if (args[0] == "checkpoint" && args[1] == "restoreCheckpointPart" && args.size() == 4) {
171 int count;
172 if (!android::base::ParseInt(args[3], &count)) exit(EINVAL);
173 checkStatus(args, vold->restoreCheckpointPart(args[2], count));
174 } else if (args[0] == "checkpoint" && args[1] == "markBootAttempt" && args.size() == 2) {
175 checkStatus(args, vold->markBootAttempt());
176 } else if (args[0] == "checkpoint" && args[1] == "abortChanges" && args.size() == 4) {
177 int retry;
178 if (!android::base::ParseInt(args[2], &retry)) exit(EINVAL);
179 checkStatus(args, vold->abortChanges(args[2], retry != 0));
180 } else if (args[0] == "checkpoint" && args[1] == "resetCheckpoint") {
181 checkStatus(args, vold->resetCheckpoint());
182 } else if (args[0] == "keymaster" && args[1] == "earlyBootEnded") {
183 checkStatus(args, vold->earlyBootEnded());
184 } else {
185 LOG(ERROR) << "Raw commands are no longer supported";
186 exit(EINVAL);
187 }
188 return 0;
189 }
190
usage(char * progname)191 static void usage(char* progname) {
192 LOG(INFO) << "Usage: " << progname << " [--wait] <system> <subcommand> [args...]";
193 }
194