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().c_str();
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
mountFstab(std::vector<std::string> & args,const android::sp<android::os::IVold> & vold)89 static void mountFstab(std::vector<std::string>& args,
90 const android::sp<android::os::IVold>& vold) {
91 auto isZoned = android::base::ParseBool(args[4]);
92 if (isZoned == android::base::ParseBoolResult::kError) exit(EINVAL);
93
94 std::vector<std::string> userDevices = {};
95 if (args[5] != "") {
96 userDevices = android::base::Split(args[5], " ");
97 }
98 checkStatus(args,
99 vold->mountFstab(args[2], args[3], isZoned == android::base::ParseBoolResult::kTrue,
100 userDevices));
101 }
102
encryptFstab(std::vector<std::string> & args,const android::sp<android::os::IVold> & vold)103 static void encryptFstab(std::vector<std::string>& args,
104 const android::sp<android::os::IVold>& vold) {
105 auto shouldFormat = android::base::ParseBool(args[4]);
106 if (shouldFormat == android::base::ParseBoolResult::kError) exit(EINVAL);
107
108 auto isZoned = android::base::ParseBool(args[6]);
109 if (isZoned == android::base::ParseBoolResult::kError) exit(EINVAL);
110
111 std::vector<std::string> userDevices = {};
112 int64_t length;
113 if (!android::base::ParseInt(args[7], &length)) exit(EINVAL);
114 if (args[8] != "") {
115 userDevices = android::base::Split(args[8], " ");
116 }
117 std::vector<std::string> deviceAliasedStr = {};
118 std::vector<bool> deviceAliased = {};
119 if (args[9] != "") {
120 deviceAliasedStr = android::base::Split(args[9], " ");
121 for (auto aliased : deviceAliasedStr) {
122 if (aliased == "0") {
123 deviceAliased.push_back(false);
124 } else {
125 deviceAliased.push_back(true);
126 }
127 }
128 }
129 checkStatus(args, vold->encryptFstab(args[2], args[3],
130 shouldFormat == android::base::ParseBoolResult::kTrue,
131 args[5], isZoned == android::base::ParseBoolResult::kTrue,
132 userDevices, deviceAliased, length));
133 }
134
main(int argc,char ** argv)135 int main(int argc, char** argv) {
136 setenv("ANDROID_LOG_TAGS", "*:v", 1);
137 if (getppid() == 1) {
138 // If init is calling us then it's during boot and we should log to kmsg
139 android::base::InitLogging(argv, &android::base::KernelLogger);
140 } else {
141 android::base::InitLogging(argv, &android::base::StderrLogger);
142 }
143 std::vector<std::string> args(argv + 1, argv + argc);
144
145 if (args.size() > 0 && args[0] == "--wait") {
146 // Just ignore the --wait flag
147 args.erase(args.begin());
148 }
149
150 if (args.size() < 2) {
151 usage(argv[0]);
152 exit(5);
153 }
154 android::sp<android::IBinder> binder = getServiceAggressive();
155 if (!binder) {
156 LOG(ERROR) << "Failed to obtain vold Binder";
157 exit(EINVAL);
158 }
159 auto vold = android::interface_cast<android::os::IVold>(binder);
160
161 if (args[0] == "cryptfs" && args[1] == "enablefilecrypto") {
162 checkStatus(args, vold->fbeEnable());
163 } else if (args[0] == "cryptfs" && args[1] == "init_user0") {
164 checkStatus(args, vold->initUser0());
165 } else if (args[0] == "volume" && args[1] == "abort_fuse") {
166 checkStatus(args, vold->abortFuse());
167 } else if (args[0] == "volume" && args[1] == "shutdown") {
168 checkStatus(args, vold->shutdown());
169 } else if (args[0] == "volume" && args[1] == "reset") {
170 checkStatus(args, vold->reset());
171 } else if (args[0] == "volume" && args[1] == "getStorageSize") {
172 int64_t size;
173 checkStatus(args, vold->getStorageSize(&size));
174 LOG(INFO) << size;
175 } else if (args[0] == "cryptfs" && args[1] == "bindkeys") {
176 bindkeys(args, vold);
177 } else if (args[0] == "cryptfs" && args[1] == "mountFstab" && args.size() == 6) {
178 mountFstab(args, vold);
179 } else if (args[0] == "cryptfs" && args[1] == "encryptFstab" && args.size() == 10) {
180 encryptFstab(args, vold);
181 } else if (args[0] == "checkpoint" && args[1] == "supportsCheckpoint" && args.size() == 2) {
182 bool supported = false;
183 checkStatus(args, vold->supportsCheckpoint(&supported));
184 return supported ? 1 : 0;
185 } else if (args[0] == "checkpoint" && args[1] == "supportsBlockCheckpoint" &&
186 args.size() == 2) {
187 bool supported = false;
188 checkStatus(args, vold->supportsBlockCheckpoint(&supported));
189 return supported ? 1 : 0;
190 } else if (args[0] == "checkpoint" && args[1] == "supportsFileCheckpoint" && args.size() == 2) {
191 bool supported = false;
192 checkStatus(args, vold->supportsFileCheckpoint(&supported));
193 return supported ? 1 : 0;
194 } else if (args[0] == "checkpoint" && args[1] == "startCheckpoint" && args.size() == 3) {
195 int retry;
196 if (!android::base::ParseInt(args[2], &retry)) exit(EINVAL);
197 checkStatus(args, vold->startCheckpoint(retry));
198 } else if (args[0] == "checkpoint" && args[1] == "needsCheckpoint" && args.size() == 2) {
199 bool enabled = false;
200 checkStatus(args, vold->needsCheckpoint(&enabled));
201 return enabled ? 1 : 0;
202 } else if (args[0] == "checkpoint" && args[1] == "needsRollback" && args.size() == 2) {
203 bool enabled = false;
204 checkStatus(args, vold->needsRollback(&enabled));
205 return enabled ? 1 : 0;
206 } else if (args[0] == "checkpoint" && args[1] == "commitChanges" && args.size() == 2) {
207 checkStatus(args, vold->commitChanges());
208 } else if (args[0] == "checkpoint" && args[1] == "prepareCheckpoint" && args.size() == 2) {
209 checkStatus(args, vold->prepareCheckpoint());
210 } else if (args[0] == "checkpoint" && args[1] == "restoreCheckpoint" && args.size() == 3) {
211 checkStatus(args, vold->restoreCheckpoint(args[2]));
212 } else if (args[0] == "checkpoint" && args[1] == "restoreCheckpointPart" && args.size() == 4) {
213 int count;
214 if (!android::base::ParseInt(args[3], &count)) exit(EINVAL);
215 checkStatus(args, vold->restoreCheckpointPart(args[2], count));
216 } else if (args[0] == "checkpoint" && args[1] == "markBootAttempt" && args.size() == 2) {
217 checkStatus(args, vold->markBootAttempt());
218 } else if (args[0] == "checkpoint" && args[1] == "abortChanges" && args.size() == 4) {
219 int retry;
220 if (!android::base::ParseInt(args[2], &retry)) exit(EINVAL);
221 checkStatus(args, vold->abortChanges(args[2], retry != 0));
222 } else if (args[0] == "checkpoint" && args[1] == "resetCheckpoint") {
223 checkStatus(args, vold->resetCheckpoint());
224 } else if (args[0] == "keymaster" && args[1] == "earlyBootEnded") {
225 checkStatus(args, vold->earlyBootEnded());
226 } else {
227 LOG(ERROR) << "Raw commands are no longer supported";
228 exit(EINVAL);
229 }
230 return 0;
231 }
232
usage(char * progname)233 static void usage(char* progname) {
234 LOG(INFO) << "Usage: " << progname << " [--wait] <system> <subcommand> [args...]";
235 }
236