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