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Tao Bao6d99d4b2018-04-25 16:47:04 -07001/*
2 * Copyright (C) 2018 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
Tao Bao42c45e22018-07-31 09:37:12 -070017#include <dlfcn.h>
Jerry Zhangf5e319a2018-05-04 11:24:10 -070018#include <errno.h>
19#include <fcntl.h>
20#include <getopt.h>
21#include <inttypes.h>
22#include <limits.h>
23#include <linux/fs.h>
24#include <stdarg.h>
Tao Bao6d99d4b2018-04-25 16:47:04 -070025#include <stdio.h>
26#include <stdlib.h>
Jerry Zhangf5e319a2018-05-04 11:24:10 -070027#include <string.h>
28#include <sys/stat.h>
29#include <sys/types.h>
30#include <time.h>
Tao Bao6d99d4b2018-04-25 16:47:04 -070031#include <unistd.h>
32
Hridya Valsaraju20c81b32018-07-27 22:09:12 -070033#include <atomic>
Jerry Zhangf5e319a2018-05-04 11:24:10 -070034#include <string>
Hridya Valsaraju20c81b32018-07-27 22:09:12 -070035#include <thread>
Jerry Zhangf5e319a2018-05-04 11:24:10 -070036#include <vector>
Tao Bao6d99d4b2018-04-25 16:47:04 -070037
Jerry Zhangf5e319a2018-05-04 11:24:10 -070038#include <android-base/file.h>
Tao Bao6d99d4b2018-04-25 16:47:04 -070039#include <android-base/logging.h>
Jerry Zhangf5e319a2018-05-04 11:24:10 -070040#include <android-base/properties.h>
41#include <android-base/strings.h>
Hridya Valsaraju20c81b32018-07-27 22:09:12 -070042#include <android-base/unique_fd.h>
Jerry Zhangf5e319a2018-05-04 11:24:10 -070043#include <bootloader_message/bootloader_message.h>
Hridya Valsaraju20c81b32018-07-27 22:09:12 -070044#include <cutils/sockets.h>
Tao Baof90d9a12019-05-10 10:40:59 -070045#include <fs_mgr/roots.h>
Tao Bao6d99d4b2018-04-25 16:47:04 -070046#include <private/android_logger.h> /* private pmsg functions */
Jerry Zhangf5e319a2018-05-04 11:24:10 -070047#include <selinux/android.h>
48#include <selinux/label.h>
49#include <selinux/selinux.h>
Tao Bao6d99d4b2018-04-25 16:47:04 -070050
Hridya Valsaraju20c81b32018-07-27 22:09:12 -070051#include "fastboot/fastboot.h"
xunchang316e9712019-04-12 16:22:15 -070052#include "install/wipe_data.h"
Tianjie Xub63a2212019-07-29 14:21:49 -070053#include "otautil/boot_state.h"
Tao Bao6d99d4b2018-04-25 16:47:04 -070054#include "otautil/paths.h"
Jerry Zhangf5e319a2018-05-04 11:24:10 -070055#include "otautil/sysutil.h"
56#include "recovery.h"
Tianjie Xu8f397302018-08-20 13:40:47 -070057#include "recovery_ui/device.h"
58#include "recovery_ui/stub_ui.h"
59#include "recovery_ui/ui.h"
Tao Baoe3f09a72019-10-01 11:55:36 -070060#include "recovery_utils/logging.h"
61#include "recovery_utils/roots.h"
Tao Bao6d99d4b2018-04-25 16:47:04 -070062
Jerry Zhangf5e319a2018-05-04 11:24:10 -070063static constexpr const char* COMMAND_FILE = "/cache/recovery/command";
64static constexpr const char* LOCALE_FILE = "/cache/recovery/last_locale";
65
Tianjie Xu164c60a2019-05-15 13:59:39 -070066static RecoveryUI* ui = nullptr;
Jerry Zhangf5e319a2018-05-04 11:24:10 -070067
Tianjie Xu164c60a2019-05-15 13:59:39 -070068static bool IsRoDebuggable() {
69 return android::base::GetBoolProperty("ro.debuggable", false);
70}
Jerry Zhangf5e319a2018-05-04 11:24:10 -070071
Tao Bao6d99d4b2018-04-25 16:47:04 -070072static void UiLogger(android::base::LogId /* id */, android::base::LogSeverity severity,
73 const char* /* tag */, const char* /* file */, unsigned int /* line */,
74 const char* message) {
75 static constexpr char log_characters[] = "VDIWEF";
76 if (severity >= android::base::ERROR && ui != nullptr) {
77 ui->Print("E:%s\n", message);
78 } else {
79 fprintf(stdout, "%c:%s\n", log_characters[severity], message);
80 }
81}
82
Tianjie Xub63a2212019-07-29 14:21:49 -070083// Parses the command line argument from various sources; and reads the stage field from BCB.
Jerry Zhangf5e319a2018-05-04 11:24:10 -070084// command line args come from, in decreasing precedence:
85// - the actual command line
86// - the bootloader control block (one per line, after "recovery")
87// - the contents of COMMAND_FILE (one per line)
Tianjie Xub63a2212019-07-29 14:21:49 -070088static std::vector<std::string> get_args(const int argc, char** const argv, std::string* stage) {
Jerry Zhangf5e319a2018-05-04 11:24:10 -070089 CHECK_GT(argc, 0);
90
91 bootloader_message boot = {};
92 std::string err;
93 if (!read_bootloader_message(&boot, &err)) {
94 LOG(ERROR) << err;
95 // If fails, leave a zeroed bootloader_message.
96 boot = {};
97 }
Tianjie Xub63a2212019-07-29 14:21:49 -070098 if (stage) {
99 *stage = std::string(boot.stage);
100 }
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700101
David Andersoneee4e262018-08-21 13:10:45 -0700102 std::string boot_command;
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700103 if (boot.command[0] != 0) {
David Andersoneee4e262018-08-21 13:10:45 -0700104 if (memchr(boot.command, '\0', sizeof(boot.command))) {
105 boot_command = std::string(boot.command);
106 } else {
107 boot_command = std::string(boot.command, sizeof(boot.command));
108 }
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700109 LOG(INFO) << "Boot command: " << boot_command;
110 }
111
112 if (boot.status[0] != 0) {
113 std::string boot_status = std::string(boot.status, sizeof(boot.status));
114 LOG(INFO) << "Boot status: " << boot_status;
115 }
116
117 std::vector<std::string> args(argv, argv + argc);
118
119 // --- if arguments weren't supplied, look in the bootloader control block
120 if (args.size() == 1) {
121 boot.recovery[sizeof(boot.recovery) - 1] = '\0'; // Ensure termination
122 std::string boot_recovery(boot.recovery);
123 std::vector<std::string> tokens = android::base::Split(boot_recovery, "\n");
124 if (!tokens.empty() && tokens[0] == "recovery") {
125 for (auto it = tokens.begin() + 1; it != tokens.end(); it++) {
126 // Skip empty and '\0'-filled tokens.
127 if (!it->empty() && (*it)[0] != '\0') args.push_back(std::move(*it));
128 }
129 LOG(INFO) << "Got " << args.size() << " arguments from boot message";
130 } else if (boot.recovery[0] != 0) {
131 LOG(ERROR) << "Bad boot message: \"" << boot_recovery << "\"";
132 }
133 }
134
135 // --- if that doesn't work, try the command file (if we have /cache).
Tianjie Xu164c60a2019-05-15 13:59:39 -0700136 if (args.size() == 1 && HasCache()) {
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700137 std::string content;
138 if (ensure_path_mounted(COMMAND_FILE) == 0 &&
139 android::base::ReadFileToString(COMMAND_FILE, &content)) {
140 std::vector<std::string> tokens = android::base::Split(content, "\n");
141 // All the arguments in COMMAND_FILE are needed (unlike the BCB message,
142 // COMMAND_FILE doesn't use filename as the first argument).
143 for (auto it = tokens.begin(); it != tokens.end(); it++) {
144 // Skip empty and '\0'-filled tokens.
145 if (!it->empty() && (*it)[0] != '\0') args.push_back(std::move(*it));
146 }
147 LOG(INFO) << "Got " << args.size() << " arguments from " << COMMAND_FILE;
148 }
149 }
150
151 // Write the arguments (excluding the filename in args[0]) back into the
152 // bootloader control block. So the device will always boot into recovery to
Tianjie Xu164c60a2019-05-15 13:59:39 -0700153 // finish the pending work, until FinishRecovery() is called.
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700154 std::vector<std::string> options(args.cbegin() + 1, args.cend());
155 if (!update_bootloader_message(options, &err)) {
156 LOG(ERROR) << "Failed to set BCB message: " << err;
157 }
158
David Andersoneee4e262018-08-21 13:10:45 -0700159 // Finally, if no arguments were specified, check whether we should boot
Tao Baod9cb0142019-04-23 11:46:25 -0700160 // into fastboot or rescue mode.
David Andersoneee4e262018-08-21 13:10:45 -0700161 if (args.size() == 1 && boot_command == "boot-fastboot") {
162 args.emplace_back("--fastboot");
Tao Baod9cb0142019-04-23 11:46:25 -0700163 } else if (args.size() == 1 && boot_command == "boot-rescue") {
164 args.emplace_back("--rescue");
David Andersoneee4e262018-08-21 13:10:45 -0700165 }
166
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700167 return args;
168}
169
170static std::string load_locale_from_cache() {
171 if (ensure_path_mounted(LOCALE_FILE) != 0) {
172 LOG(ERROR) << "Can't mount " << LOCALE_FILE;
173 return "";
174 }
175
176 std::string content;
177 if (!android::base::ReadFileToString(LOCALE_FILE, &content)) {
178 PLOG(ERROR) << "Can't read " << LOCALE_FILE;
179 return "";
180 }
181
182 return android::base::Trim(content);
183}
184
Tao Baoe0cfab32019-03-29 15:53:23 -0700185// Sets the usb config to 'state'.
186static bool SetUsbConfig(const std::string& state) {
187 android::base::SetProperty("sys.usb.config", state);
188 return android::base::WaitForProperty("sys.usb.state", state);
189}
190
Hridya Valsaraju20c81b32018-07-27 22:09:12 -0700191static void ListenRecoverySocket(RecoveryUI* ui, std::atomic<Device::BuiltinAction>& action) {
192 android::base::unique_fd sock_fd(android_get_control_socket("recovery"));
193 if (sock_fd < 0) {
194 PLOG(ERROR) << "Failed to open recovery socket";
195 return;
196 }
197 listen(sock_fd, 4);
198
199 while (true) {
200 android::base::unique_fd connection_fd;
201 connection_fd.reset(accept(sock_fd, nullptr, nullptr));
202 if (connection_fd < 0) {
203 PLOG(ERROR) << "Failed to accept socket connection";
204 continue;
205 }
206 char msg;
207 constexpr char kSwitchToFastboot = 'f';
208 constexpr char kSwitchToRecovery = 'r';
209 ssize_t ret = TEMP_FAILURE_RETRY(read(connection_fd, &msg, sizeof(msg)));
210 if (ret != sizeof(msg)) {
211 PLOG(ERROR) << "Couldn't read from socket";
212 continue;
213 }
214 switch (msg) {
215 case kSwitchToRecovery:
216 action = Device::BuiltinAction::ENTER_RECOVERY;
217 break;
218 case kSwitchToFastboot:
219 action = Device::BuiltinAction::ENTER_FASTBOOT;
220 break;
221 default:
222 LOG(ERROR) << "Unrecognized char from socket " << msg;
223 continue;
224 }
225 ui->InterruptKey();
226 }
227}
228
Tao Bao6d99d4b2018-04-25 16:47:04 -0700229static void redirect_stdio(const char* filename) {
Tao Bao6fcd2082019-01-16 09:29:17 -0800230 android::base::unique_fd pipe_read, pipe_write;
231 // Create a pipe that allows parent process sending logs over.
232 if (!android::base::Pipe(&pipe_read, &pipe_write)) {
233 PLOG(ERROR) << "Failed to create pipe for redirecting stdio";
Tao Bao6d99d4b2018-04-25 16:47:04 -0700234
235 // Fall back to traditional logging mode without timestamps. If these fail, there's not really
236 // anywhere to complain...
237 freopen(filename, "a", stdout);
238 setbuf(stdout, nullptr);
239 freopen(filename, "a", stderr);
240 setbuf(stderr, nullptr);
241
242 return;
243 }
244
245 pid_t pid = fork();
246 if (pid == -1) {
Tao Bao6fcd2082019-01-16 09:29:17 -0800247 PLOG(ERROR) << "Failed to fork for redirecting stdio";
Tao Bao6d99d4b2018-04-25 16:47:04 -0700248
249 // Fall back to traditional logging mode without timestamps. If these fail, there's not really
250 // anywhere to complain...
251 freopen(filename, "a", stdout);
252 setbuf(stdout, nullptr);
253 freopen(filename, "a", stderr);
254 setbuf(stderr, nullptr);
255
256 return;
257 }
258
259 if (pid == 0) {
Tao Bao6fcd2082019-01-16 09:29:17 -0800260 // Child process reads the incoming logs and doesn't write to the pipe.
261 pipe_write.reset();
Tao Bao6d99d4b2018-04-25 16:47:04 -0700262
263 auto start = std::chrono::steady_clock::now();
264
265 // Child logger to actually write to the log file.
266 FILE* log_fp = fopen(filename, "ae");
267 if (log_fp == nullptr) {
268 PLOG(ERROR) << "fopen \"" << filename << "\" failed";
Tao Bao6d99d4b2018-04-25 16:47:04 -0700269 _exit(EXIT_FAILURE);
270 }
271
Tao Bao6fcd2082019-01-16 09:29:17 -0800272 FILE* pipe_fp = android::base::Fdopen(std::move(pipe_read), "r");
Tao Bao6d99d4b2018-04-25 16:47:04 -0700273 if (pipe_fp == nullptr) {
274 PLOG(ERROR) << "fdopen failed";
275 check_and_fclose(log_fp, filename);
Tao Bao6d99d4b2018-04-25 16:47:04 -0700276 _exit(EXIT_FAILURE);
277 }
278
279 char* line = nullptr;
280 size_t len = 0;
281 while (getline(&line, &len, pipe_fp) != -1) {
282 auto now = std::chrono::steady_clock::now();
283 double duration =
284 std::chrono::duration_cast<std::chrono::duration<double>>(now - start).count();
285 if (line[0] == '\n') {
286 fprintf(log_fp, "[%12.6lf]\n", duration);
287 } else {
288 fprintf(log_fp, "[%12.6lf] %s", duration, line);
289 }
290 fflush(log_fp);
291 }
292
293 PLOG(ERROR) << "getline failed";
294
Tao Bao6fcd2082019-01-16 09:29:17 -0800295 fclose(pipe_fp);
Tao Bao6d99d4b2018-04-25 16:47:04 -0700296 free(line);
297 check_and_fclose(log_fp, filename);
Tao Bao6d99d4b2018-04-25 16:47:04 -0700298 _exit(EXIT_FAILURE);
299 } else {
300 // Redirect stdout/stderr to the logger process. Close the unused read end.
Tao Bao6fcd2082019-01-16 09:29:17 -0800301 pipe_read.reset();
Tao Bao6d99d4b2018-04-25 16:47:04 -0700302
303 setbuf(stdout, nullptr);
304 setbuf(stderr, nullptr);
305
Tao Bao6fcd2082019-01-16 09:29:17 -0800306 if (dup2(pipe_write.get(), STDOUT_FILENO) == -1) {
Tao Bao6d99d4b2018-04-25 16:47:04 -0700307 PLOG(ERROR) << "dup2 stdout failed";
308 }
Tao Bao6fcd2082019-01-16 09:29:17 -0800309 if (dup2(pipe_write.get(), STDERR_FILENO) == -1) {
Tao Bao6d99d4b2018-04-25 16:47:04 -0700310 PLOG(ERROR) << "dup2 stderr failed";
311 }
Tao Bao6d99d4b2018-04-25 16:47:04 -0700312 }
313}
314
315int main(int argc, char** argv) {
316 // We don't have logcat yet under recovery; so we'll print error on screen and log to stdout
317 // (which is redirected to recovery.log) as we used to do.
318 android::base::InitLogging(argv, &UiLogger);
319
320 // Take last pmsg contents and rewrite it to the current pmsg session.
321 static constexpr const char filter[] = "recovery/";
322 // Do we need to rotate?
323 bool do_rotate = false;
324
325 __android_log_pmsg_file_read(LOG_ID_SYSTEM, ANDROID_LOG_INFO, filter, logbasename, &do_rotate);
326 // Take action to refresh pmsg contents
327 __android_log_pmsg_file_read(LOG_ID_SYSTEM, ANDROID_LOG_INFO, filter, logrotate, &do_rotate);
328
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700329 time_t start = time(nullptr);
330
Tao Bao6d99d4b2018-04-25 16:47:04 -0700331 // redirect_stdio should be called only in non-sideload mode. Otherwise we may have two logger
332 // instances with different timestamps.
333 redirect_stdio(Paths::Get().temporary_log_file().c_str());
334
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700335 load_volume_table();
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700336
Tianjie Xub63a2212019-07-29 14:21:49 -0700337 std::string stage;
338 std::vector<std::string> args = get_args(argc, argv, &stage);
Tao Bao1700cc42018-07-16 22:09:59 -0700339 auto args_to_parse = StringVectorToNullTerminatedArray(args);
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700340
341 static constexpr struct option OPTIONS[] = {
Hridya Valsaraju20c81b32018-07-27 22:09:12 -0700342 { "fastboot", no_argument, nullptr, 0 },
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700343 { "locale", required_argument, nullptr, 0 },
Tianjie Xub63a2212019-07-29 14:21:49 -0700344 { "reason", required_argument, nullptr, 0 },
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700345 { "show_text", no_argument, nullptr, 't' },
346 { nullptr, 0, nullptr, 0 },
347 };
348
349 bool show_text = false;
Hridya Valsaraju20c81b32018-07-27 22:09:12 -0700350 bool fastboot = false;
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700351 std::string locale;
Tianjie Xub63a2212019-07-29 14:21:49 -0700352 std::string reason;
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700353
Tao Baoff185862019-09-18 13:28:32 -0700354 // The code here is only interested in the options that signal the intent to start fastbootd or
355 // recovery. Unrecognized options are likely meant for recovery, which will be processed later in
356 // start_recovery(). Suppress the warnings for such -- even if some flags were indeed invalid, the
357 // code in start_recovery() will capture and report them.
358 opterr = 0;
359
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700360 int arg;
361 int option_index;
Tao Bao1700cc42018-07-16 22:09:59 -0700362 while ((arg = getopt_long(args_to_parse.size() - 1, args_to_parse.data(), "", OPTIONS,
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700363 &option_index)) != -1) {
364 switch (arg) {
365 case 't':
366 show_text = true;
367 break;
368 case 0: {
369 std::string option = OPTIONS[option_index].name;
370 if (option == "locale") {
371 locale = optarg;
Tianjie Xub63a2212019-07-29 14:21:49 -0700372 } else if (option == "reason") {
373 reason = optarg;
Hridya Valsaraju7f41a2c2018-09-19 16:29:01 -0700374 } else if (option == "fastboot" &&
Yifan Hongd17174c2018-11-16 12:49:33 -0800375 android::base::GetBoolProperty("ro.boot.dynamic_partitions", false)) {
Hridya Valsaraju20c81b32018-07-27 22:09:12 -0700376 fastboot = true;
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700377 }
378 break;
379 }
380 }
381 }
Jerry Zhang49fd5d22018-05-17 12:54:41 -0700382 optind = 1;
Tao Baoff185862019-09-18 13:28:32 -0700383 opterr = 1;
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700384
385 if (locale.empty()) {
Tianjie Xu164c60a2019-05-15 13:59:39 -0700386 if (HasCache()) {
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700387 locale = load_locale_from_cache();
388 }
389
390 if (locale.empty()) {
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700391 locale = DEFAULT_LOCALE;
392 }
393 }
394
Tao Bao42c45e22018-07-31 09:37:12 -0700395 static constexpr const char* kDefaultLibRecoveryUIExt = "librecovery_ui_ext.so";
396 // Intentionally not calling dlclose(3) to avoid potential gotchas (e.g. `make_device` may have
397 // handed out pointers to code or static [or thread-local] data and doesn't collect them all back
398 // in on dlclose).
399 void* librecovery_ui_ext = dlopen(kDefaultLibRecoveryUIExt, RTLD_NOW);
400
401 using MakeDeviceType = decltype(&make_device);
402 MakeDeviceType make_device_func = nullptr;
403 if (librecovery_ui_ext == nullptr) {
404 printf("Failed to dlopen %s: %s\n", kDefaultLibRecoveryUIExt, dlerror());
405 } else {
406 reinterpret_cast<void*&>(make_device_func) = dlsym(librecovery_ui_ext, "make_device");
407 if (make_device_func == nullptr) {
408 printf("Failed to dlsym make_device: %s\n", dlerror());
409 }
410 }
411
412 Device* device;
413 if (make_device_func == nullptr) {
414 printf("Falling back to the default make_device() instead\n");
415 device = make_device();
416 } else {
417 printf("Loading make_device from %s\n", kDefaultLibRecoveryUIExt);
418 device = (*make_device_func)();
419 }
420
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700421 if (android::base::GetBoolProperty("ro.boot.quiescent", false)) {
422 printf("Quiescent recovery mode.\n");
423 device->ResetUI(new StubRecoveryUI());
424 } else {
425 if (!device->GetUI()->Init(locale)) {
426 printf("Failed to initialize UI; using stub UI instead.\n");
427 device->ResetUI(new StubRecoveryUI());
428 }
429 }
Tianjie Xub63a2212019-07-29 14:21:49 -0700430
431 BootState boot_state(reason, stage); // recovery_main owns the state of boot.
432 device->SetBootState(&boot_state);
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700433 ui = device->GetUI();
434
Tianjie Xu164c60a2019-05-15 13:59:39 -0700435 if (!HasCache()) {
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700436 device->RemoveMenuItemForAction(Device::WIPE_CACHE);
437 }
438
Yifan Hongd17174c2018-11-16 12:49:33 -0800439 if (!android::base::GetBoolProperty("ro.boot.dynamic_partitions", false)) {
Hridya Valsarajudaa301e2018-09-18 14:48:01 -0700440 device->RemoveMenuItemForAction(Device::ENTER_FASTBOOT);
441 }
442
Tianjie Xu164c60a2019-05-15 13:59:39 -0700443 if (!IsRoDebuggable()) {
Tao Baoc6dc3252019-04-16 14:22:25 -0700444 device->RemoveMenuItemForAction(Device::ENTER_RESCUE);
445 }
446
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700447 ui->SetBackground(RecoveryUI::NONE);
448 if (show_text) ui->ShowText(true);
449
Hridya Valsaraju20c81b32018-07-27 22:09:12 -0700450 LOG(INFO) << "Starting recovery (pid " << getpid() << ") on " << ctime(&start);
451 LOG(INFO) << "locale is [" << locale << "]";
452
Tianjie Xu164c60a2019-05-15 13:59:39 -0700453 auto sehandle = selinux_android_file_context_handle();
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700454 selinux_android_set_sehandle(sehandle);
455 if (!sehandle) {
456 ui->Print("Warning: No file_contexts\n");
457 }
458
xunchang2239b9e2019-04-15 15:24:24 -0700459 SetLoggingSehandle(sehandle);
xunchang316e9712019-04-12 16:22:15 -0700460
Hridya Valsaraju20c81b32018-07-27 22:09:12 -0700461 std::atomic<Device::BuiltinAction> action;
462 std::thread listener_thread(ListenRecoverySocket, ui, std::ref(action));
463 listener_thread.detach();
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700464
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700465 while (true) {
Tianjie Xu164c60a2019-05-15 13:59:39 -0700466 std::string usb_config = fastboot ? "fastboot" : IsRoDebuggable() ? "adb" : "none";
Hridya Valsaraju20c81b32018-07-27 22:09:12 -0700467 std::string usb_state = android::base::GetProperty("sys.usb.state", "none");
468 if (usb_config != usb_state) {
469 if (!SetUsbConfig("none")) {
470 LOG(ERROR) << "Failed to clear USB config";
471 }
472 if (!SetUsbConfig(usb_config)) {
473 LOG(ERROR) << "Failed to set USB config to " << usb_config;
474 }
475 }
476
David Anderson983e2d52019-01-02 11:35:38 -0800477 ui->SetEnableFastbootdLogo(fastboot);
478
Hridya Valsaraju20c81b32018-07-27 22:09:12 -0700479 auto ret = fastboot ? StartFastboot(device, args) : start_recovery(device, args);
480
481 if (ret == Device::KEY_INTERRUPTED) {
482 ret = action.exchange(ret);
483 if (ret == Device::NO_ACTION) {
484 continue;
485 }
486 }
487 switch (ret) {
488 case Device::SHUTDOWN:
489 ui->Print("Shutting down...\n");
Mark Salyzyn488cc052019-05-20 10:36:16 -0700490 Shutdown("userrequested,recovery");
491 break;
492
493 case Device::SHUTDOWN_FROM_FASTBOOT:
494 ui->Print("Shutting down...\n");
495 Shutdown("userrequested,fastboot");
Hridya Valsaraju20c81b32018-07-27 22:09:12 -0700496 break;
497
498 case Device::REBOOT_BOOTLOADER:
499 ui->Print("Rebooting to bootloader...\n");
Tao Bao782dcc12019-04-29 11:23:16 -0700500 Reboot("bootloader");
Hridya Valsaraju20c81b32018-07-27 22:09:12 -0700501 break;
502
Tao Baod9cb0142019-04-23 11:46:25 -0700503 case Device::REBOOT_FASTBOOT:
504 ui->Print("Rebooting to recovery/fastboot...\n");
Tao Bao782dcc12019-04-29 11:23:16 -0700505 Reboot("fastboot");
Tao Bao10f441a2019-04-19 15:22:15 -0700506 break;
507
Tao Baod9cb0142019-04-23 11:46:25 -0700508 case Device::REBOOT_RECOVERY:
509 ui->Print("Rebooting to recovery...\n");
Tao Bao782dcc12019-04-29 11:23:16 -0700510 Reboot("recovery");
Tao Baod9cb0142019-04-23 11:46:25 -0700511 break;
512
513 case Device::REBOOT_RESCUE: {
Tao Bao782dcc12019-04-29 11:23:16 -0700514 // Not using `Reboot("rescue")`, as it requires matching support in kernel and/or
Tao Baod9cb0142019-04-23 11:46:25 -0700515 // bootloader.
516 bootloader_message boot = {};
517 strlcpy(boot.command, "boot-rescue", sizeof(boot.command));
518 std::string err;
519 if (!write_bootloader_message(boot, &err)) {
520 LOG(ERROR) << "Failed to write bootloader message: " << err;
521 // Stay under recovery on failure.
522 continue;
523 }
524 ui->Print("Rebooting to recovery/rescue...\n");
Tao Bao782dcc12019-04-29 11:23:16 -0700525 Reboot("recovery");
Tao Baod9cb0142019-04-23 11:46:25 -0700526 break;
527 }
528
Hridya Valsaraju20c81b32018-07-27 22:09:12 -0700529 case Device::ENTER_FASTBOOT:
Tao Baof90d9a12019-05-10 10:40:59 -0700530 if (android::fs_mgr::LogicalPartitionsMapped()) {
David Anderson2b2f4232018-10-29 18:48:56 -0700531 ui->Print("Partitions may be mounted - rebooting to enter fastboot.");
Tao Bao782dcc12019-04-29 11:23:16 -0700532 Reboot("fastboot");
David Anderson2b2f4232018-10-29 18:48:56 -0700533 } else {
534 LOG(INFO) << "Entering fastboot";
535 fastboot = true;
536 }
Hridya Valsaraju20c81b32018-07-27 22:09:12 -0700537 break;
538
539 case Device::ENTER_RECOVERY:
540 LOG(INFO) << "Entering recovery";
541 fastboot = false;
542 break;
543
Mark Salyzyn488cc052019-05-20 10:36:16 -0700544 case Device::REBOOT:
545 ui->Print("Rebooting...\n");
546 Reboot("userrequested,recovery");
547 break;
548
549 case Device::REBOOT_FROM_FASTBOOT:
550 ui->Print("Rebooting...\n");
551 Reboot("userrequested,fastboot");
552 break;
553
Hridya Valsaraju20c81b32018-07-27 22:09:12 -0700554 default:
555 ui->Print("Rebooting...\n");
Mark Salyzyn488cc052019-05-20 10:36:16 -0700556 Reboot("unknown" + std::to_string(ret));
Hridya Valsaraju20c81b32018-07-27 22:09:12 -0700557 break;
558 }
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700559 }
Hridya Valsaraju20c81b32018-07-27 22:09:12 -0700560
Jerry Zhangf5e319a2018-05-04 11:24:10 -0700561 // Should be unreachable.
562 return EXIT_SUCCESS;
Tao Bao6d99d4b2018-04-25 16:47:04 -0700563}