blob: 6f83440daf7a36e71b3fd853c84fcd6235f66e56 [file] [log] [blame]
Doug Zongker9931f7f2009-06-10 14:11:53 -07001/*
2 * Copyright (C) 2009 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 Bao0c7839a2016-10-10 15:48:37 -070017#include "updater/install.h"
18
Doug Zongkerfbf3c102009-06-24 09:36:20 -070019#include <ctype.h>
Doug Zongker9931f7f2009-06-10 14:11:53 -070020#include <errno.h>
Tao Bao361342c2016-02-08 11:15:50 -080021#include <fcntl.h>
22#include <ftw.h>
23#include <inttypes.h>
Doug Zongker9931f7f2009-06-10 14:11:53 -070024#include <stdarg.h>
Doug Zongkerfbf3c102009-06-24 09:36:20 -070025#include <stdio.h>
Doug Zongker9931f7f2009-06-10 14:11:53 -070026#include <stdlib.h>
27#include <string.h>
Tao Bao361342c2016-02-08 11:15:50 -080028#include <sys/capability.h>
Doug Zongker9931f7f2009-06-10 14:11:53 -070029#include <sys/mount.h>
30#include <sys/stat.h>
31#include <sys/types.h>
Doug Zongkera3f89ea2009-09-10 14:10:48 -070032#include <sys/wait.h>
Nick Kralevich5dbdef02013-09-07 14:41:06 -070033#include <sys/xattr.h>
Tao Bao361342c2016-02-08 11:15:50 -080034#include <time.h>
35#include <unistd.h>
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070036#include <utime.h>
Doug Zongker9931f7f2009-06-10 14:11:53 -070037
Yabin Cui64be2132016-02-03 18:16:02 -080038#include <memory>
Tao Bao361342c2016-02-08 11:15:50 -080039#include <string>
Yabin Cui64be2132016-02-03 18:16:02 -080040#include <vector>
41
Tao Baod0f30882016-11-03 23:52:01 -070042#include <android-base/file.h>
Tao Bao039f2da2016-11-22 16:29:50 -080043#include <android-base/logging.h>
Tianjie Xu5fe280a2016-10-17 18:15:20 -070044#include <android-base/parsedouble.h>
Tao Baod0f30882016-11-03 23:52:01 -070045#include <android-base/parseint.h>
Elliott Hughescb220402016-09-23 15:30:55 -070046#include <android-base/properties.h>
Elliott Hughes4b166f02015-12-04 15:30:20 -080047#include <android-base/stringprintf.h>
Tao Baod0f30882016-11-03 23:52:01 -070048#include <android-base/strings.h>
Tao Bao0d3f84f2016-12-28 15:09:20 -080049#include <applypatch/applypatch.h>
50#include <bootloader_message/bootloader_message.h>
Tao Baode40ba52016-10-05 23:17:01 -070051#include <ext4_utils/wipe.h>
Tao Bao361342c2016-02-08 11:15:50 -080052#include <openssl/sha.h>
Elliott Hughes4bbd5bf2016-04-01 18:24:39 -070053#include <selinux/label.h>
54#include <selinux/selinux.h>
Tao Bao09e468f2017-09-29 14:39:33 -070055#include <tune2fs.h>
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -070056#include <ziparchive/zip_archive.h>
Tao Bao1107d962015-09-09 17:16:55 -070057
Doug Zongker9931f7f2009-06-10 14:11:53 -070058#include "edify/expr.h"
Tao Baod33b2f82017-09-28 21:29:11 -070059#include "otafault/ota_io.h"
Tao Bao17054c02018-05-03 22:41:23 -070060#include "otautil/dirutil.h"
Tao Bao1fc5bf32017-10-06 07:43:41 -070061#include "otautil/error_code.h"
Tao Bao9a319f02018-01-04 13:19:11 -080062#include "otautil/mounts.h"
Tao Bao09e468f2017-09-29 14:39:33 -070063#include "otautil/print_sha1.h"
Tao Bao2c526392018-05-03 23:01:13 -070064#include "otautil/sysutil.h"
Tao Bao0c7839a2016-10-10 15:48:37 -070065#include "updater/updater.h"
Doug Zongker8edb00c2009-06-11 17:21:44 -070066
Tao Bao1107d962015-09-09 17:16:55 -070067// Send over the buffer to recovery though the command pipe.
68static void uiPrint(State* state, const std::string& buffer) {
Tao Bao039f2da2016-11-22 16:29:50 -080069 UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
Tao Baob6918c72015-05-19 17:02:16 -070070
Tao Bao039f2da2016-11-22 16:29:50 -080071 // "line1\nline2\n" will be split into 3 tokens: "line1", "line2" and "".
72 // So skip sending empty strings to UI.
73 std::vector<std::string> lines = android::base::Split(buffer, "\n");
74 for (auto& line : lines) {
75 if (!line.empty()) {
76 fprintf(ui->cmd_pipe, "ui_print %s\n", line.c_str());
Tao Bao1107d962015-09-09 17:16:55 -070077 }
Tao Bao039f2da2016-11-22 16:29:50 -080078 }
Tao Bao1107d962015-09-09 17:16:55 -070079
Tao Bao039f2da2016-11-22 16:29:50 -080080 // On the updater side, we need to dump the contents to stderr (which has
81 // been redirected to the log file). Because the recovery will only print
82 // the contents to screen when processing pipe command ui_print.
83 LOG(INFO) << buffer;
Michael Runged4a63422014-10-22 19:48:41 -070084}
85
Elliott Hughes83ce7552016-06-30 09:28:42 -070086void uiPrintf(State* _Nonnull state, const char* _Nonnull format, ...) {
Tao Bao039f2da2016-11-22 16:29:50 -080087 std::string error_msg;
Tao Bao1107d962015-09-09 17:16:55 -070088
Tao Bao039f2da2016-11-22 16:29:50 -080089 va_list ap;
90 va_start(ap, format);
91 android::base::StringAppendV(&error_msg, format, ap);
92 va_end(ap);
Tao Bao1107d962015-09-09 17:16:55 -070093
Tao Bao039f2da2016-11-22 16:29:50 -080094 uiPrint(state, error_msg);
Michael Runged4a63422014-10-22 19:48:41 -070095}
96
Tianjie Xu5419ad32018-02-02 16:49:15 -080097// This is the updater side handler for ui_print() in edify script. Contents will be sent over to
98// the recovery side for on-screen display.
99Value* UIPrintFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
100 std::vector<std::string> args;
101 if (!ReadArgs(state, argv, &args)) {
102 return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
103 }
104
105 std::string buffer = android::base::Join(args, "");
106 uiPrint(state, buffer);
107 return StringValue(buffer);
108}
109
110// package_extract_file(package_file[, dest_file])
111// Extracts a single package_file from the update package and writes it to dest_file,
112// overwriting existing files if necessary. Without the dest_file argument, returns the
113// contents of the package file as a binary blob.
114Value* PackageExtractFileFn(const char* name, State* state,
115 const std::vector<std::unique_ptr<Expr>>& argv) {
116 if (argv.size() < 1 || argv.size() > 2) {
117 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 or 2 args, got %zu", name,
118 argv.size());
119 }
120
121 if (argv.size() == 2) {
122 // The two-argument version extracts to a file.
123
124 std::vector<std::string> args;
125 if (!ReadArgs(state, argv, &args)) {
126 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse %zu args", name,
127 argv.size());
128 }
129 const std::string& zip_path = args[0];
130 const std::string& dest_path = args[1];
131
132 ZipArchiveHandle za = static_cast<UpdaterInfo*>(state->cookie)->package_zip;
133 ZipString zip_string_path(zip_path.c_str());
134 ZipEntry entry;
135 if (FindEntry(za, zip_string_path, &entry) != 0) {
136 LOG(ERROR) << name << ": no " << zip_path << " in package";
137 return StringValue("");
138 }
139
140 unique_fd fd(TEMP_FAILURE_RETRY(
141 ota_open(dest_path.c_str(), O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR)));
142 if (fd == -1) {
143 PLOG(ERROR) << name << ": can't open " << dest_path << " for write";
144 return StringValue("");
145 }
146
147 bool success = true;
148 int32_t ret = ExtractEntryToFile(za, &entry, fd);
149 if (ret != 0) {
150 LOG(ERROR) << name << ": Failed to extract entry \"" << zip_path << "\" ("
151 << entry.uncompressed_length << " bytes) to \"" << dest_path
152 << "\": " << ErrorCodeString(ret);
153 success = false;
154 }
155 if (ota_fsync(fd) == -1) {
156 PLOG(ERROR) << "fsync of \"" << dest_path << "\" failed";
157 success = false;
158 }
159 if (ota_close(fd) == -1) {
160 PLOG(ERROR) << "close of \"" << dest_path << "\" failed";
161 success = false;
162 }
163
164 return StringValue(success ? "t" : "");
165 } else {
166 // The one-argument version returns the contents of the file as the result.
167
168 std::vector<std::string> args;
169 if (!ReadArgs(state, argv, &args)) {
170 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse %zu args", name,
171 argv.size());
172 }
173 const std::string& zip_path = args[0];
174
175 ZipArchiveHandle za = static_cast<UpdaterInfo*>(state->cookie)->package_zip;
176 ZipString zip_string_path(zip_path.c_str());
177 ZipEntry entry;
178 if (FindEntry(za, zip_string_path, &entry) != 0) {
179 return ErrorAbort(state, kPackageExtractFileFailure, "%s(): no %s in package", name,
180 zip_path.c_str());
181 }
182
183 std::string buffer;
184 buffer.resize(entry.uncompressed_length);
185
186 int32_t ret =
187 ExtractToMemory(za, &entry, reinterpret_cast<uint8_t*>(&buffer[0]), buffer.size());
188 if (ret != 0) {
189 return ErrorAbort(state, kPackageExtractFileFailure,
190 "%s: Failed to extract entry \"%s\" (%zu bytes) to memory: %s", name,
191 zip_path.c_str(), buffer.size(), ErrorCodeString(ret));
192 }
193
194 return new Value(VAL_BLOB, buffer);
195 }
196}
197
198// apply_patch(src_file, tgt_file, tgt_sha1, tgt_size, patch1_sha1, patch1_blob, [...])
199// Applies a binary patch to the src_file to produce the tgt_file. If the desired target is the
200// same as the source, pass "-" for tgt_file. tgt_sha1 and tgt_size are the expected final SHA1
201// hash and size of the target file. The remaining arguments must come in pairs: a SHA1 hash (a
202// 40-character hex string) and a blob. The blob is the patch to be applied when the source
203// file's current contents have the given SHA1.
204//
205// The patching is done in a safe manner that guarantees the target file either has the desired
206// SHA1 hash and size, or it is untouched -- it will not be left in an unrecoverable intermediate
207// state. If the process is interrupted during patching, the target file may be in an intermediate
208// state; a copy exists in the cache partition so restarting the update can successfully update
209// the file.
210Value* ApplyPatchFn(const char* name, State* state,
211 const std::vector<std::unique_ptr<Expr>>& argv) {
212 if (argv.size() < 6 || (argv.size() % 2) == 1) {
213 return ErrorAbort(state, kArgsParsingFailure,
214 "%s(): expected at least 6 args and an "
215 "even number, got %zu",
216 name, argv.size());
217 }
218
219 std::vector<std::string> args;
220 if (!ReadArgs(state, argv, &args, 0, 4)) {
221 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
222 }
223 const std::string& source_filename = args[0];
224 const std::string& target_filename = args[1];
225 const std::string& target_sha1 = args[2];
226 const std::string& target_size_str = args[3];
227
228 size_t target_size;
229 if (!android::base::ParseUint(target_size_str.c_str(), &target_size)) {
230 return ErrorAbort(state, kArgsParsingFailure, "%s(): can't parse \"%s\" as byte count", name,
231 target_size_str.c_str());
232 }
233
234 int patchcount = (argv.size() - 4) / 2;
235 std::vector<std::unique_ptr<Value>> arg_values;
236 if (!ReadValueArgs(state, argv, &arg_values, 4, argv.size() - 4)) {
237 return nullptr;
238 }
239
240 for (int i = 0; i < patchcount; ++i) {
241 if (arg_values[i * 2]->type != VAL_STRING) {
242 return ErrorAbort(state, kArgsParsingFailure, "%s(): sha-1 #%d is not string", name, i * 2);
243 }
244 if (arg_values[i * 2 + 1]->type != VAL_BLOB) {
245 return ErrorAbort(state, kArgsParsingFailure, "%s(): patch #%d is not blob", name, i * 2 + 1);
246 }
247 }
248
249 std::vector<std::string> patch_sha_str;
250 std::vector<std::unique_ptr<Value>> patches;
251 for (int i = 0; i < patchcount; ++i) {
252 patch_sha_str.push_back(arg_values[i * 2]->data);
253 patches.push_back(std::move(arg_values[i * 2 + 1]));
254 }
255
256 int result = applypatch(source_filename.c_str(), target_filename.c_str(), target_sha1.c_str(),
257 target_size, patch_sha_str, patches, nullptr);
258
259 return StringValue(result == 0 ? "t" : "");
260}
261
262// apply_patch_check(filename, [sha1, ...])
263// Returns true if the contents of filename or the temporary copy in the cache partition (if
264// present) have a SHA-1 checksum equal to one of the given sha1 values. sha1 values are
265// specified as 40 hex digits. This function differs from sha1_check(read_file(filename),
266// sha1 [, ...]) in that it knows to check the cache partition copy, so apply_patch_check() will
267// succeed even if the file was corrupted by an interrupted apply_patch() update.
268Value* ApplyPatchCheckFn(const char* name, State* state,
269 const std::vector<std::unique_ptr<Expr>>& argv) {
270 if (argv.size() < 1) {
271 return ErrorAbort(state, kArgsParsingFailure, "%s(): expected at least 1 arg, got %zu", name,
272 argv.size());
273 }
274
275 std::vector<std::string> args;
276 if (!ReadArgs(state, argv, &args, 0, 1)) {
277 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
278 }
279 const std::string& filename = args[0];
280
281 std::vector<std::string> sha1s;
282 if (argv.size() > 1 && !ReadArgs(state, argv, &sha1s, 1, argv.size() - 1)) {
283 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
284 }
285 int result = applypatch_check(filename.c_str(), sha1s);
286
287 return StringValue(result == 0 ? "t" : "");
288}
289
290// sha1_check(data)
291// to return the sha1 of the data (given in the format returned by
292// read_file).
293//
294// sha1_check(data, sha1_hex, [sha1_hex, ...])
295// returns the sha1 of the file if it matches any of the hex
296// strings passed, or "" if it does not equal any of them.
297//
298Value* Sha1CheckFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
299 if (argv.size() < 1) {
300 return ErrorAbort(state, kArgsParsingFailure, "%s() expects at least 1 arg", name);
301 }
302
303 std::vector<std::unique_ptr<Value>> args;
304 if (!ReadValueArgs(state, argv, &args)) {
305 return nullptr;
306 }
307
308 if (args[0]->type == VAL_INVALID) {
309 return StringValue("");
310 }
311 uint8_t digest[SHA_DIGEST_LENGTH];
312 SHA1(reinterpret_cast<const uint8_t*>(args[0]->data.c_str()), args[0]->data.size(), digest);
313
314 if (argv.size() == 1) {
315 return StringValue(print_sha1(digest));
316 }
317
318 for (size_t i = 1; i < argv.size(); ++i) {
319 uint8_t arg_digest[SHA_DIGEST_LENGTH];
320 if (args[i]->type != VAL_STRING) {
321 LOG(ERROR) << name << "(): arg " << i << " is not a string; skipping";
Tao Bao8dc70492018-06-20 10:14:40 -0700322 } else if (ParseSha1(args[i]->data, arg_digest) != 0) {
Tianjie Xu5419ad32018-02-02 16:49:15 -0800323 // Warn about bad args and skip them.
324 LOG(ERROR) << name << "(): error parsing \"" << args[i]->data << "\" as sha-1; skipping";
325 } else if (memcmp(digest, arg_digest, SHA_DIGEST_LENGTH) == 0) {
326 // Found a match.
327 return args[i].release();
328 }
329 }
330
331 // Didn't match any of the hex strings; return false.
332 return StringValue("");
333}
334
Doug Zongker3d177d02010-07-01 09:18:44 -0700335// mount(fs_type, partition_type, location, mount_point)
Tao Bao0831d0b2016-11-03 23:25:04 -0700336// mount(fs_type, partition_type, location, mount_point, mount_options)
Tianjie Xuc4447322017-03-06 14:44:59 -0800337
Doug Zongker3d177d02010-07-01 09:18:44 -0700338// fs_type="ext4" partition_type="EMMC" location=device
Tianjie Xuc4447322017-03-06 14:44:59 -0800339Value* MountFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
340 if (argv.size() != 4 && argv.size() != 5) {
341 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 4-5 args, got %zu", name,
342 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800343 }
344
345 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800346 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800347 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
348 }
349 const std::string& fs_type = args[0];
350 const std::string& partition_type = args[1];
351 const std::string& location = args[2];
352 const std::string& mount_point = args[3];
353 std::string mount_options;
354
Tianjie Xuc4447322017-03-06 14:44:59 -0800355 if (argv.size() == 5) {
Tao Bao039f2da2016-11-22 16:29:50 -0800356 mount_options = args[4];
357 }
358
359 if (fs_type.empty()) {
360 return ErrorAbort(state, kArgsParsingFailure, "fs_type argument to %s() can't be empty", name);
361 }
362 if (partition_type.empty()) {
363 return ErrorAbort(state, kArgsParsingFailure, "partition_type argument to %s() can't be empty",
364 name);
365 }
366 if (location.empty()) {
367 return ErrorAbort(state, kArgsParsingFailure, "location argument to %s() can't be empty", name);
368 }
369 if (mount_point.empty()) {
370 return ErrorAbort(state, kArgsParsingFailure, "mount_point argument to %s() can't be empty",
371 name);
372 }
373
374 {
375 char* secontext = nullptr;
376
377 if (sehandle) {
378 selabel_lookup(sehandle, &secontext, mount_point.c_str(), 0755);
379 setfscreatecon(secontext);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700380 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700381
Tao Bao039f2da2016-11-22 16:29:50 -0800382 mkdir(mount_point.c_str(), 0755);
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700383
Tao Bao039f2da2016-11-22 16:29:50 -0800384 if (secontext) {
385 freecon(secontext);
386 setfscreatecon(nullptr);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700387 }
Tao Bao039f2da2016-11-22 16:29:50 -0800388 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700389
Tao Bao039f2da2016-11-22 16:29:50 -0800390 if (mount(location.c_str(), mount_point.c_str(), fs_type.c_str(),
391 MS_NOATIME | MS_NODEV | MS_NODIRATIME, mount_options.c_str()) < 0) {
Tao Bao0bbc7642017-03-29 23:57:47 -0700392 uiPrintf(state, "%s: Failed to mount %s at %s: %s", name, location.c_str(), mount_point.c_str(),
393 strerror(errno));
Tao Bao039f2da2016-11-22 16:29:50 -0800394 return StringValue("");
395 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700396
Tao Bao039f2da2016-11-22 16:29:50 -0800397 return StringValue(mount_point);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700398}
399
Doug Zongker8edb00c2009-06-11 17:21:44 -0700400// is_mounted(mount_point)
Tianjie Xuc4447322017-03-06 14:44:59 -0800401Value* IsMountedFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
402 if (argv.size() != 1) {
403 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800404 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700405
Tao Bao039f2da2016-11-22 16:29:50 -0800406 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800407 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800408 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
409 }
410 const std::string& mount_point = args[0];
411 if (mount_point.empty()) {
412 return ErrorAbort(state, kArgsParsingFailure,
413 "mount_point argument to unmount() can't be empty");
414 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700415
Tao Bao039f2da2016-11-22 16:29:50 -0800416 scan_mounted_volumes();
417 MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point.c_str());
418 if (vol == nullptr) {
419 return StringValue("");
420 }
Doug Zongker8edb00c2009-06-11 17:21:44 -0700421
Tao Bao039f2da2016-11-22 16:29:50 -0800422 return StringValue(mount_point);
Doug Zongker8edb00c2009-06-11 17:21:44 -0700423}
424
Tianjie Xuc4447322017-03-06 14:44:59 -0800425Value* UnmountFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
426 if (argv.size() != 1) {
427 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800428 }
429 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800430 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800431 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
432 }
433 const std::string& mount_point = args[0];
434 if (mount_point.empty()) {
435 return ErrorAbort(state, kArgsParsingFailure,
436 "mount_point argument to unmount() can't be empty");
437 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700438
Tao Bao039f2da2016-11-22 16:29:50 -0800439 scan_mounted_volumes();
440 MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point.c_str());
441 if (vol == nullptr) {
Tao Bao0bbc7642017-03-29 23:57:47 -0700442 uiPrintf(state, "Failed to unmount %s: No such volume", mount_point.c_str());
Tao Bao039f2da2016-11-22 16:29:50 -0800443 return nullptr;
444 } else {
445 int ret = unmount_mounted_volume(vol);
446 if (ret != 0) {
Tao Bao0bbc7642017-03-29 23:57:47 -0700447 uiPrintf(state, "Failed to unmount %s: %s", mount_point.c_str(), strerror(errno));
Doug Zongker9931f7f2009-06-10 14:11:53 -0700448 }
Tao Bao039f2da2016-11-22 16:29:50 -0800449 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700450
Tao Bao039f2da2016-11-22 16:29:50 -0800451 return StringValue(mount_point);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700452}
Doug Zongker8edb00c2009-06-11 17:21:44 -0700453
JP Abgrall37aedb32014-06-16 19:07:39 -0700454static int exec_cmd(const char* path, char* const argv[]) {
Tao Bao039f2da2016-11-22 16:29:50 -0800455 pid_t child;
456 if ((child = vfork()) == 0) {
457 execv(path, argv);
Tao Bao3da88012017-02-03 13:09:23 -0800458 _exit(EXIT_FAILURE);
Tao Bao039f2da2016-11-22 16:29:50 -0800459 }
460
461 int status;
462 waitpid(child, &status, 0);
463 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
464 LOG(ERROR) << path << " failed with status " << WEXITSTATUS(status);
465 }
466 return WEXITSTATUS(status);
JP Abgrall37aedb32014-06-16 19:07:39 -0700467}
468
Stephen Smalley779701d2012-02-09 14:13:23 -0500469// format(fs_type, partition_type, location, fs_size, mount_point)
Doug Zongker9931f7f2009-06-10 14:11:53 -0700470//
Tao Bao039f2da2016-11-22 16:29:50 -0800471// fs_type="ext4" partition_type="EMMC" location=device fs_size=<bytes> mount_point=<location>
472// fs_type="f2fs" partition_type="EMMC" location=device fs_size=<bytes> mount_point=<location>
JP Abgrall37aedb32014-06-16 19:07:39 -0700473// if fs_size == 0, then make fs uses the entire partition.
Ken Sumrall8f132ed2011-01-14 18:55:05 -0800474// if fs_size > 0, that is the size to use
JP Abgrall37aedb32014-06-16 19:07:39 -0700475// if fs_size < 0, then reserve that many bytes at the end of the partition (not for "f2fs")
Tianjie Xuc4447322017-03-06 14:44:59 -0800476Value* FormatFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
477 if (argv.size() != 5) {
478 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 5 args, got %zu", name,
479 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800480 }
Stephen Smalley779701d2012-02-09 14:13:23 -0500481
Tao Bao039f2da2016-11-22 16:29:50 -0800482 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800483 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800484 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
485 }
486 const std::string& fs_type = args[0];
487 const std::string& partition_type = args[1];
488 const std::string& location = args[2];
489 const std::string& fs_size = args[3];
490 const std::string& mount_point = args[4];
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700491
Tao Bao039f2da2016-11-22 16:29:50 -0800492 if (fs_type.empty()) {
493 return ErrorAbort(state, kArgsParsingFailure, "fs_type argument to %s() can't be empty", name);
494 }
495 if (partition_type.empty()) {
496 return ErrorAbort(state, kArgsParsingFailure, "partition_type argument to %s() can't be empty",
497 name);
498 }
499 if (location.empty()) {
500 return ErrorAbort(state, kArgsParsingFailure, "location argument to %s() can't be empty", name);
501 }
502 if (mount_point.empty()) {
503 return ErrorAbort(state, kArgsParsingFailure, "mount_point argument to %s() can't be empty",
504 name);
505 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700506
Tao Bao039f2da2016-11-22 16:29:50 -0800507 int64_t size;
508 if (!android::base::ParseInt(fs_size, &size)) {
Tianjie Xu5ad80282018-01-28 15:37:48 -0800509 return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse int in %s", name,
Tao Bao039f2da2016-11-22 16:29:50 -0800510 fs_size.c_str());
511 }
512
513 if (fs_type == "ext4") {
Jiyong Park69364fe2018-06-20 14:18:18 +0900514 const char* mke2fs_argv[] = { "/system/bin/mke2fs", "-t", "ext4", "-b", "4096",
515 location.c_str(), nullptr, nullptr };
Jin Qianded2dac2017-04-21 14:36:12 -0700516 std::string size_str;
517 if (size != 0) {
518 size_str = std::to_string(size / 4096LL);
519 mke2fs_argv[6] = size_str.c_str();
520 }
521
522 int status = exec_cmd(mke2fs_argv[0], const_cast<char**>(mke2fs_argv));
Tao Bao039f2da2016-11-22 16:29:50 -0800523 if (status != 0) {
Jin Qian502fd1c2017-11-02 11:58:12 -0700524 LOG(ERROR) << name << ": mke2fs failed (" << status << ") on " << location;
525 return StringValue("");
Jin Qianded2dac2017-04-21 14:36:12 -0700526 }
527
Jiyong Park69364fe2018-06-20 14:18:18 +0900528 const char* e2fsdroid_argv[] = { "/system/bin/e2fsdroid", "-e", "-a", mount_point.c_str(),
529 location.c_str(), nullptr };
Jin Qianded2dac2017-04-21 14:36:12 -0700530 status = exec_cmd(e2fsdroid_argv[0], const_cast<char**>(e2fsdroid_argv));
531 if (status != 0) {
532 LOG(ERROR) << name << ": e2fsdroid failed (" << status << ") on " << location;
Tao Bao039f2da2016-11-22 16:29:50 -0800533 return StringValue("");
Doug Zongker9931f7f2009-06-10 14:11:53 -0700534 }
Tao Bao039f2da2016-11-22 16:29:50 -0800535 return StringValue(location);
536 } else if (fs_type == "f2fs") {
537 if (size < 0) {
538 LOG(ERROR) << name << ": fs_size can't be negative for f2fs: " << fs_size;
539 return StringValue("");
Doug Zongker9931f7f2009-06-10 14:11:53 -0700540 }
Tao Bao039f2da2016-11-22 16:29:50 -0800541 std::string num_sectors = std::to_string(size / 512);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700542
Tao Bao039f2da2016-11-22 16:29:50 -0800543 const char* f2fs_path = "/sbin/mkfs.f2fs";
Jaegeuk Kim1a8bb0f2017-11-01 13:24:43 -0700544 const char* f2fs_argv[] = { "mkfs.f2fs",
545 "-d1",
546 "-f",
Jaegeuk Kim2e5dc842018-04-05 22:42:13 -0700547 "-O", "encrypt",
548 "-O", "quota",
549 "-O", "verity",
550 "-w", "512",
Jaegeuk Kim1a8bb0f2017-11-01 13:24:43 -0700551 location.c_str(),
552 (size < 512) ? nullptr : num_sectors.c_str(),
553 nullptr };
Tao Bao397a8132017-05-12 11:02:27 -0700554 int status = exec_cmd(f2fs_path, const_cast<char**>(f2fs_argv));
Tao Bao039f2da2016-11-22 16:29:50 -0800555 if (status != 0) {
556 LOG(ERROR) << name << ": mkfs.f2fs failed (" << status << ") on " << location;
557 return StringValue("");
558 }
Jaegeuk Kimc1c73112017-11-28 19:48:05 -0800559
560 const char* sload_argv[] = { "/sbin/sload.f2fs", "-t", mount_point.c_str(), location.c_str(),
561 nullptr };
562 status = exec_cmd(sload_argv[0], const_cast<char**>(sload_argv));
563 if (status != 0) {
564 LOG(ERROR) << name << ": sload.f2fs failed (" << status << ") on " << location;
565 return StringValue("");
566 }
567
Tao Bao039f2da2016-11-22 16:29:50 -0800568 return StringValue(location);
569 } else {
570 LOG(ERROR) << name << ": unsupported fs_type \"" << fs_type << "\" partition_type \""
571 << partition_type << "\"";
572 }
573
574 return nullptr;
Doug Zongker9931f7f2009-06-10 14:11:53 -0700575}
576
Tianjie Xuc4447322017-03-06 14:44:59 -0800577Value* ShowProgressFn(const char* name, State* state,
578 const std::vector<std::unique_ptr<Expr>>& argv) {
579 if (argv.size() != 2) {
580 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
581 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800582 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700583
Tao Bao039f2da2016-11-22 16:29:50 -0800584 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800585 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800586 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
587 }
588 const std::string& frac_str = args[0];
589 const std::string& sec_str = args[1];
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700590
Tao Bao039f2da2016-11-22 16:29:50 -0800591 double frac;
592 if (!android::base::ParseDouble(frac_str.c_str(), &frac)) {
Tianjie Xu5ad80282018-01-28 15:37:48 -0800593 return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse double in %s", name,
Tao Bao039f2da2016-11-22 16:29:50 -0800594 frac_str.c_str());
595 }
596 int sec;
597 if (!android::base::ParseInt(sec_str.c_str(), &sec)) {
Tianjie Xu5ad80282018-01-28 15:37:48 -0800598 return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse int in %s", name,
Tao Bao039f2da2016-11-22 16:29:50 -0800599 sec_str.c_str());
600 }
Doug Zongker9931f7f2009-06-10 14:11:53 -0700601
Tao Bao039f2da2016-11-22 16:29:50 -0800602 UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
603 fprintf(ui->cmd_pipe, "progress %f %d\n", frac, sec);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700604
Tao Bao039f2da2016-11-22 16:29:50 -0800605 return StringValue(frac_str);
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700606}
607
Tianjie Xu5419ad32018-02-02 16:49:15 -0800608Value* SetProgressFn(const char* name, State* state,
609 const std::vector<std::unique_ptr<Expr>>& argv) {
Tianjie Xuc4447322017-03-06 14:44:59 -0800610 if (argv.size() != 1) {
611 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800612 }
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700613
Tao Bao039f2da2016-11-22 16:29:50 -0800614 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800615 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800616 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
617 }
618 const std::string& frac_str = args[0];
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700619
Tao Bao039f2da2016-11-22 16:29:50 -0800620 double frac;
621 if (!android::base::ParseDouble(frac_str.c_str(), &frac)) {
Tianjie Xu5ad80282018-01-28 15:37:48 -0800622 return ErrorAbort(state, kArgsParsingFailure, "%s: failed to parse double in %s", name,
Tao Bao039f2da2016-11-22 16:29:50 -0800623 frac_str.c_str());
624 }
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700625
Tao Bao039f2da2016-11-22 16:29:50 -0800626 UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
627 fprintf(ui->cmd_pipe, "set_progress %f\n", frac);
Doug Zongkerfbf3c102009-06-24 09:36:20 -0700628
Tao Bao039f2da2016-11-22 16:29:50 -0800629 return StringValue(frac_str);
Doug Zongker9931f7f2009-06-10 14:11:53 -0700630}
631
Tianjie Xuc4447322017-03-06 14:44:59 -0800632Value* GetPropFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
633 if (argv.size() != 1) {
634 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800635 }
636 std::string key;
637 if (!Evaluate(state, argv[0], &key)) {
638 return nullptr;
639 }
640 std::string value = android::base::GetProperty(key, "");
Doug Zongker8edb00c2009-06-11 17:21:44 -0700641
Tao Bao039f2da2016-11-22 16:29:50 -0800642 return StringValue(value);
Doug Zongker8edb00c2009-06-11 17:21:44 -0700643}
644
Doug Zongker47cace92009-06-18 10:11:50 -0700645// file_getprop(file, key)
646//
647// interprets 'file' as a getprop-style file (key=value pairs, one
Tao Bao51d516e2016-11-03 14:49:01 -0700648// per line. # comment lines, blank lines, lines without '=' ignored),
Michael Rungeaa1a31e2014-04-25 18:47:18 -0700649// and returns the value for 'key' (or "" if it isn't defined).
Tianjie Xu5419ad32018-02-02 16:49:15 -0800650Value* FileGetPropFn(const char* name, State* state,
651 const std::vector<std::unique_ptr<Expr>>& argv) {
Tianjie Xuc4447322017-03-06 14:44:59 -0800652 if (argv.size() != 2) {
653 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
654 argv.size());
Tao Bao358c2ec2016-11-28 11:48:43 -0800655 }
656
657 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800658 if (!ReadArgs(state, argv, &args)) {
Tao Bao358c2ec2016-11-28 11:48:43 -0800659 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
660 }
661 const std::string& filename = args[0];
662 const std::string& key = args[1];
663
664 struct stat st;
665 if (stat(filename.c_str(), &st) < 0) {
666 return ErrorAbort(state, kFileGetPropFailure, "%s: failed to stat \"%s\": %s", name,
667 filename.c_str(), strerror(errno));
668 }
669
670 constexpr off_t MAX_FILE_GETPROP_SIZE = 65536;
671 if (st.st_size > MAX_FILE_GETPROP_SIZE) {
672 return ErrorAbort(state, kFileGetPropFailure, "%s too large for %s (max %lld)",
673 filename.c_str(), name, static_cast<long long>(MAX_FILE_GETPROP_SIZE));
674 }
675
676 std::string buffer(st.st_size, '\0');
677 unique_file f(ota_fopen(filename.c_str(), "rb"));
678 if (f == nullptr) {
679 return ErrorAbort(state, kFileOpenFailure, "%s: failed to open %s: %s", name, filename.c_str(),
680 strerror(errno));
681 }
682
683 if (ota_fread(&buffer[0], 1, st.st_size, f.get()) != static_cast<size_t>(st.st_size)) {
684 ErrorAbort(state, kFreadFailure, "%s: failed to read %zu bytes from %s", name,
685 static_cast<size_t>(st.st_size), filename.c_str());
686 return nullptr;
687 }
688
689 ota_fclose(f);
690
691 std::vector<std::string> lines = android::base::Split(buffer, "\n");
692 for (size_t i = 0; i < lines.size(); i++) {
693 std::string line = android::base::Trim(lines[i]);
694
695 // comment or blank line: skip to next line
696 if (line.empty() || line[0] == '#') {
697 continue;
698 }
699 size_t equal_pos = line.find('=');
700 if (equal_pos == std::string::npos) {
701 continue;
Tao Bao51d516e2016-11-03 14:49:01 -0700702 }
703
Tao Bao358c2ec2016-11-28 11:48:43 -0800704 // trim whitespace between key and '='
705 std::string str = android::base::Trim(line.substr(0, equal_pos));
Doug Zongker47cace92009-06-18 10:11:50 -0700706
Tao Bao358c2ec2016-11-28 11:48:43 -0800707 // not the key we're looking for
708 if (key != str) continue;
Doug Zongker47cace92009-06-18 10:11:50 -0700709
Tao Bao358c2ec2016-11-28 11:48:43 -0800710 return StringValue(android::base::Trim(line.substr(equal_pos + 1)));
711 }
Doug Zongker47cace92009-06-18 10:11:50 -0700712
Tao Bao358c2ec2016-11-28 11:48:43 -0800713 return StringValue("");
Doug Zongker47cace92009-06-18 10:11:50 -0700714}
715
Doug Zongker8edb00c2009-06-11 17:21:44 -0700716// apply_patch_space(bytes)
Tianjie Xu5419ad32018-02-02 16:49:15 -0800717Value* ApplyPatchSpaceFn(const char* name, State* state,
718 const std::vector<std::unique_ptr<Expr>>& argv) {
Tianjie Xuc4447322017-03-06 14:44:59 -0800719 if (argv.size() != 1) {
720 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 args, got %zu", name,
721 argv.size());
722 }
Tao Bao039f2da2016-11-22 16:29:50 -0800723 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800724 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800725 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
726 }
727 const std::string& bytes_str = args[0];
Doug Zongkerc4351c72010-02-22 14:46:32 -0800728
Tao Bao039f2da2016-11-22 16:29:50 -0800729 size_t bytes;
730 if (!android::base::ParseUint(bytes_str.c_str(), &bytes)) {
Tianjie Xu5ad80282018-01-28 15:37:48 -0800731 return ErrorAbort(state, kArgsParsingFailure, "%s(): can't parse \"%s\" as byte count", name,
732 bytes_str.c_str());
Tao Bao039f2da2016-11-22 16:29:50 -0800733 }
Doug Zongkerc4351c72010-02-22 14:46:32 -0800734
Tianjie Xu99b73be2017-11-28 17:23:06 -0800735 // Skip the cache size check if the update is a retry.
736 if (state->is_retry || CacheSizeCheck(bytes) == 0) {
737 return StringValue("t");
738 }
739 return StringValue("");
Doug Zongkerc4351c72010-02-22 14:46:32 -0800740}
741
Tianjie Xuc4447322017-03-06 14:44:59 -0800742Value* WipeCacheFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
743 if (!argv.empty()) {
744 return ErrorAbort(state, kArgsParsingFailure, "%s() expects no args, got %zu", name,
745 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800746 }
747 fprintf(static_cast<UpdaterInfo*>(state->cookie)->cmd_pipe, "wipe_cache\n");
748 return StringValue("t");
Doug Zongkerd0181b82011-10-19 10:51:12 -0700749}
750
Tianjie Xuc4447322017-03-06 14:44:59 -0800751Value* RunProgramFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
752 if (argv.size() < 1) {
Tao Bao039f2da2016-11-22 16:29:50 -0800753 return ErrorAbort(state, kArgsParsingFailure, "%s() expects at least 1 arg", name);
754 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700755
Tao Bao039f2da2016-11-22 16:29:50 -0800756 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800757 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800758 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
759 }
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700760
Tianjie Xuc4447322017-03-06 14:44:59 -0800761 char* args2[argv.size() + 1];
762 for (size_t i = 0; i < argv.size(); i++) {
Tao Bao039f2da2016-11-22 16:29:50 -0800763 args2[i] = &args[i][0];
764 }
Tianjie Xuc4447322017-03-06 14:44:59 -0800765 args2[argv.size()] = nullptr;
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700766
Tianjie Xuc4447322017-03-06 14:44:59 -0800767 LOG(INFO) << "about to run program [" << args2[0] << "] with " << argv.size() << " args";
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700768
Tao Bao039f2da2016-11-22 16:29:50 -0800769 pid_t child = fork();
770 if (child == 0) {
771 execv(args2[0], args2);
772 PLOG(ERROR) << "run_program: execv failed";
Tao Bao3da88012017-02-03 13:09:23 -0800773 _exit(EXIT_FAILURE);
Tao Bao039f2da2016-11-22 16:29:50 -0800774 }
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700775
Tao Bao039f2da2016-11-22 16:29:50 -0800776 int status;
777 waitpid(child, &status, 0);
778 if (WIFEXITED(status)) {
779 if (WEXITSTATUS(status) != 0) {
780 LOG(ERROR) << "run_program: child exited with status " << WEXITSTATUS(status);
781 }
782 } else if (WIFSIGNALED(status)) {
783 LOG(ERROR) << "run_program: child terminated by signal " << WTERMSIG(status);
784 }
785
786 return StringValue(std::to_string(status));
Doug Zongkera3f89ea2009-09-10 14:10:48 -0700787}
788
Hristo Bojinovdb314d62010-08-02 10:29:49 -0700789// Read a local file and return its contents (the Value* returned
Doug Zongker512536a2010-02-17 16:11:44 -0800790// is actually a FileContents*).
Tianjie Xuc4447322017-03-06 14:44:59 -0800791Value* ReadFileFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
792 if (argv.size() != 1) {
793 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800794 }
Tianjie Xu5fe280a2016-10-17 18:15:20 -0700795
Tao Bao039f2da2016-11-22 16:29:50 -0800796 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800797 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800798 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
799 }
800 const std::string& filename = args[0];
Doug Zongker512536a2010-02-17 16:11:44 -0800801
Tao Bao039f2da2016-11-22 16:29:50 -0800802 Value* v = new Value(VAL_INVALID, "");
Doug Zongker512536a2010-02-17 16:11:44 -0800803
Tao Bao039f2da2016-11-22 16:29:50 -0800804 FileContents fc;
805 if (LoadFileContents(filename.c_str(), &fc) == 0) {
806 v->type = VAL_BLOB;
807 v->data = std::string(fc.data.begin(), fc.data.end());
808 }
809 return v;
Doug Zongker512536a2010-02-17 16:11:44 -0800810}
Doug Zongker8edb00c2009-06-11 17:21:44 -0700811
Tao Baod0f30882016-11-03 23:52:01 -0700812// write_value(value, filename)
813// Writes 'value' to 'filename'.
814// Example: write_value("960000", "/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq")
Tianjie Xuc4447322017-03-06 14:44:59 -0800815Value* WriteValueFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
816 if (argv.size() != 2) {
817 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
818 argv.size());
Tao Baod0f30882016-11-03 23:52:01 -0700819 }
820
821 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800822 if (!ReadArgs(state, argv, &args)) {
Tao Baod0f30882016-11-03 23:52:01 -0700823 return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
824 }
825
826 const std::string& filename = args[1];
827 if (filename.empty()) {
828 return ErrorAbort(state, kArgsParsingFailure, "%s(): Filename cannot be empty", name);
829 }
830
831 const std::string& value = args[0];
832 if (!android::base::WriteStringToFile(value, filename)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800833 PLOG(ERROR) << name << ": Failed to write to \"" << filename << "\"";
Tao Baod0f30882016-11-03 23:52:01 -0700834 return StringValue("");
835 } else {
836 return StringValue("t");
837 }
838}
839
Doug Zongkerc87bab12013-11-25 13:53:25 -0800840// Immediately reboot the device. Recovery is not finished normally,
841// so if you reboot into recovery it will re-start applying the
842// current package (because nothing has cleared the copy of the
843// arguments stored in the BCB).
844//
845// The argument is the partition name passed to the android reboot
846// property. It can be "recovery" to boot from the recovery
847// partition, or "" (empty string) to boot from the regular boot
848// partition.
Tianjie Xuc4447322017-03-06 14:44:59 -0800849Value* RebootNowFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
850 if (argv.size() != 2) {
851 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
852 argv.size());
Tao Baobedf5fc2016-11-18 12:01:26 -0800853 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800854
Tao Baobedf5fc2016-11-18 12:01:26 -0800855 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800856 if (!ReadArgs(state, argv, &args)) {
Tao Baobedf5fc2016-11-18 12:01:26 -0800857 return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)", name);
858 }
859 const std::string& filename = args[0];
860 const std::string& property = args[1];
Doug Zongkerc87bab12013-11-25 13:53:25 -0800861
Tao Baobedf5fc2016-11-18 12:01:26 -0800862 // Zero out the 'command' field of the bootloader message. Leave the rest intact.
863 bootloader_message boot;
864 std::string err;
865 if (!read_bootloader_message_from(&boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800866 LOG(ERROR) << name << "(): Failed to read from \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800867 return StringValue("");
868 }
869 memset(boot.command, 0, sizeof(boot.command));
870 if (!write_bootloader_message_to(boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800871 LOG(ERROR) << name << "(): Failed to write to \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800872 return StringValue("");
873 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800874
Tao Bao2c526392018-05-03 23:01:13 -0700875 reboot("reboot," + property);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800876
Tao Baobedf5fc2016-11-18 12:01:26 -0800877 sleep(5);
878 return ErrorAbort(state, kRebootFailure, "%s() failed to reboot", name);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800879}
880
881// Store a string value somewhere that future invocations of recovery
882// can access it. This value is called the "stage" and can be used to
883// drive packages that need to do reboots in the middle of
884// installation and keep track of where they are in the multi-stage
885// install.
886//
887// The first argument is the block device for the misc partition
888// ("/misc" in the fstab), which is where this value is stored. The
889// second argument is the string to store; it should not exceed 31
890// bytes.
Tianjie Xuc4447322017-03-06 14:44:59 -0800891Value* SetStageFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
892 if (argv.size() != 2) {
893 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
894 argv.size());
Tao Baobedf5fc2016-11-18 12:01:26 -0800895 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800896
Tao Baobedf5fc2016-11-18 12:01:26 -0800897 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800898 if (!ReadArgs(state, argv, &args)) {
Tao Baobedf5fc2016-11-18 12:01:26 -0800899 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
900 }
901 const std::string& filename = args[0];
902 const std::string& stagestr = args[1];
Doug Zongkerc87bab12013-11-25 13:53:25 -0800903
Tao Baobedf5fc2016-11-18 12:01:26 -0800904 // Store this value in the misc partition, immediately after the
905 // bootloader message that the main recovery uses to save its
906 // arguments in case of the device restarting midway through
907 // package installation.
908 bootloader_message boot;
909 std::string err;
910 if (!read_bootloader_message_from(&boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800911 LOG(ERROR) << name << "(): Failed to read from \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800912 return StringValue("");
913 }
914 strlcpy(boot.stage, stagestr.c_str(), sizeof(boot.stage));
915 if (!write_bootloader_message_to(boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800916 LOG(ERROR) << name << "(): Failed to write to \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800917 return StringValue("");
918 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800919
Tao Baobedf5fc2016-11-18 12:01:26 -0800920 return StringValue(filename);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800921}
922
923// Return the value most recently saved with SetStageFn. The argument
924// is the block device for the misc partition.
Tianjie Xuc4447322017-03-06 14:44:59 -0800925Value* GetStageFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
926 if (argv.size() != 1) {
927 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
Tao Baobedf5fc2016-11-18 12:01:26 -0800928 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800929
Tao Baobedf5fc2016-11-18 12:01:26 -0800930 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800931 if (!ReadArgs(state, argv, &args)) {
Tao Baobedf5fc2016-11-18 12:01:26 -0800932 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
933 }
934 const std::string& filename = args[0];
Doug Zongkerc87bab12013-11-25 13:53:25 -0800935
Tao Baobedf5fc2016-11-18 12:01:26 -0800936 bootloader_message boot;
937 std::string err;
938 if (!read_bootloader_message_from(&boot, filename, &err)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800939 LOG(ERROR) << name << "(): Failed to read from \"" << filename << "\": " << err;
Tao Baobedf5fc2016-11-18 12:01:26 -0800940 return StringValue("");
941 }
Doug Zongkerc87bab12013-11-25 13:53:25 -0800942
Tao Baobedf5fc2016-11-18 12:01:26 -0800943 return StringValue(boot.stage);
Doug Zongkerc87bab12013-11-25 13:53:25 -0800944}
945
Tianjie Xuc4447322017-03-06 14:44:59 -0800946Value* WipeBlockDeviceFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
947 if (argv.size() != 2) {
948 return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
949 argv.size());
Tao Bao358c2ec2016-11-28 11:48:43 -0800950 }
Doug Zongkerc9d6e4f2014-02-24 16:02:50 -0800951
Tao Bao358c2ec2016-11-28 11:48:43 -0800952 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800953 if (!ReadArgs(state, argv, &args)) {
Tao Bao358c2ec2016-11-28 11:48:43 -0800954 return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
955 }
956 const std::string& filename = args[0];
957 const std::string& len_str = args[1];
Doug Zongkerc9d6e4f2014-02-24 16:02:50 -0800958
Tao Bao358c2ec2016-11-28 11:48:43 -0800959 size_t len;
960 if (!android::base::ParseUint(len_str.c_str(), &len)) {
961 return nullptr;
962 }
963 unique_fd fd(ota_open(filename.c_str(), O_WRONLY, 0644));
964 // The wipe_block_device function in ext4_utils returns 0 on success and 1
965 // for failure.
966 int status = wipe_block_device(fd, len);
967 return StringValue((status == 0) ? "t" : "");
Doug Zongkerc9d6e4f2014-02-24 16:02:50 -0800968}
969
Tianjie Xuc4447322017-03-06 14:44:59 -0800970Value* EnableRebootFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
971 if (!argv.empty()) {
972 return ErrorAbort(state, kArgsParsingFailure, "%s() expects no args, got %zu", name,
973 argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800974 }
975 UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
976 fprintf(ui->cmd_pipe, "enable_reboot\n");
977 return StringValue("t");
Doug Zongkerc704e062014-05-23 08:40:35 -0700978}
979
Tianjie Xuc4447322017-03-06 14:44:59 -0800980Value* Tune2FsFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
981 if (argv.empty()) {
982 return ErrorAbort(state, kArgsParsingFailure, "%s() expects args, got %zu", name, argv.size());
Tao Bao039f2da2016-11-22 16:29:50 -0800983 }
Michael Rungeacf47db2014-11-21 00:12:28 -0800984
Tao Bao039f2da2016-11-22 16:29:50 -0800985 std::vector<std::string> args;
Tianjie Xuc4447322017-03-06 14:44:59 -0800986 if (!ReadArgs(state, argv, &args)) {
Tao Bao039f2da2016-11-22 16:29:50 -0800987 return ErrorAbort(state, kArgsParsingFailure, "%s() could not read args", name);
988 }
Michael Rungeacf47db2014-11-21 00:12:28 -0800989
Tianjie Xuc4447322017-03-06 14:44:59 -0800990 char* args2[argv.size() + 1];
Tao Bao039f2da2016-11-22 16:29:50 -0800991 // Tune2fs expects the program name as its args[0]
992 args2[0] = const_cast<char*>(name);
993 if (args2[0] == nullptr) {
994 return nullptr;
995 }
Tianjie Xuc4447322017-03-06 14:44:59 -0800996 for (size_t i = 0; i < argv.size(); ++i) {
Tao Bao039f2da2016-11-22 16:29:50 -0800997 args2[i + 1] = &args[i][0];
998 }
Michael Rungeacf47db2014-11-21 00:12:28 -0800999
Tao Bao039f2da2016-11-22 16:29:50 -08001000 // tune2fs changes the file system parameters on an ext2 file system; it
1001 // returns 0 on success.
Tianjie Xuc4447322017-03-06 14:44:59 -08001002 int result = tune2fs_main(argv.size() + 1, args2);
Tao Bao039f2da2016-11-22 16:29:50 -08001003 if (result != 0) {
1004 return ErrorAbort(state, kTune2FsFailure, "%s() returned error code %d", name, result);
1005 }
1006 return StringValue("t");
Michael Rungeacf47db2014-11-21 00:12:28 -08001007}
1008
Doug Zongker9931f7f2009-06-10 14:11:53 -07001009void RegisterInstallFunctions() {
Tao Bao039f2da2016-11-22 16:29:50 -08001010 RegisterFunction("mount", MountFn);
1011 RegisterFunction("is_mounted", IsMountedFn);
1012 RegisterFunction("unmount", UnmountFn);
1013 RegisterFunction("format", FormatFn);
1014 RegisterFunction("show_progress", ShowProgressFn);
1015 RegisterFunction("set_progress", SetProgressFn);
Tao Bao039f2da2016-11-22 16:29:50 -08001016 RegisterFunction("package_extract_file", PackageExtractFileFn);
Nick Kralevich5dbdef02013-09-07 14:41:06 -07001017
Tao Bao039f2da2016-11-22 16:29:50 -08001018 RegisterFunction("getprop", GetPropFn);
1019 RegisterFunction("file_getprop", FileGetPropFn);
Doug Zongker8edb00c2009-06-11 17:21:44 -07001020
Tao Bao039f2da2016-11-22 16:29:50 -08001021 RegisterFunction("apply_patch", ApplyPatchFn);
1022 RegisterFunction("apply_patch_check", ApplyPatchCheckFn);
1023 RegisterFunction("apply_patch_space", ApplyPatchSpaceFn);
Doug Zongkerd9c9d102009-06-12 12:24:39 -07001024
Tao Bao039f2da2016-11-22 16:29:50 -08001025 RegisterFunction("wipe_block_device", WipeBlockDeviceFn);
Doug Zongker52b40362014-02-10 15:30:30 -08001026
Tao Bao039f2da2016-11-22 16:29:50 -08001027 RegisterFunction("read_file", ReadFileFn);
1028 RegisterFunction("sha1_check", Sha1CheckFn);
Tao Bao039f2da2016-11-22 16:29:50 -08001029 RegisterFunction("write_value", WriteValueFn);
Doug Zongker512536a2010-02-17 16:11:44 -08001030
Tao Bao039f2da2016-11-22 16:29:50 -08001031 RegisterFunction("wipe_cache", WipeCacheFn);
Doug Zongkerd0181b82011-10-19 10:51:12 -07001032
Tao Bao039f2da2016-11-22 16:29:50 -08001033 RegisterFunction("ui_print", UIPrintFn);
Doug Zongkera3f89ea2009-09-10 14:10:48 -07001034
Tao Bao039f2da2016-11-22 16:29:50 -08001035 RegisterFunction("run_program", RunProgramFn);
Doug Zongkerc87bab12013-11-25 13:53:25 -08001036
Tao Bao039f2da2016-11-22 16:29:50 -08001037 RegisterFunction("reboot_now", RebootNowFn);
1038 RegisterFunction("get_stage", GetStageFn);
1039 RegisterFunction("set_stage", SetStageFn);
Doug Zongkerc704e062014-05-23 08:40:35 -07001040
Tao Bao039f2da2016-11-22 16:29:50 -08001041 RegisterFunction("enable_reboot", EnableRebootFn);
1042 RegisterFunction("tune2fs", Tune2FsFn);
Doug Zongker9931f7f2009-06-10 14:11:53 -07001043}