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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 // For linux_syscall_support.h. This makes it safe to call embedded system | |
| 6 // calls when in seccomp mode. | |
| 7 | |
| 8 #include "components/breakpad/app/breakpad_linux.h" | |
| 9 | |
| 10 #include <fcntl.h> | |
| 11 #include <poll.h> | |
| 12 #include <signal.h> | |
| 13 #include <stdlib.h> | |
| 14 #include <sys/socket.h> | |
| 15 #include <sys/time.h> | |
| 16 #include <sys/types.h> | |
| 17 #include <sys/uio.h> | |
| 18 #include <sys/wait.h> | |
| 19 #include <time.h> | |
| 20 #include <unistd.h> | |
| 21 | |
| 22 #include <algorithm> | |
| 23 #include <string> | |
| 24 | |
| 25 #include "base/base_switches.h" | |
| 26 #include "base/command_line.h" | |
| 27 #include "base/debug/crash_logging.h" | |
| 28 #include "base/debug/dump_without_crashing.h" | |
| 29 #include "base/files/file_path.h" | |
| 30 #include "base/linux_util.h" | |
| 31 #include "base/path_service.h" | |
| 32 #include "base/posix/eintr_wrapper.h" | |
| 33 #include "base/posix/global_descriptors.h" | |
| 34 #include "base/process/memory.h" | |
| 35 #include "base/strings/string_util.h" | |
| 36 #include "breakpad/src/client/linux/crash_generation/crash_generation_client.h" | |
| 37 #include "breakpad/src/client/linux/handler/exception_handler.h" | |
| 38 #include "breakpad/src/client/linux/minidump_writer/directory_reader.h" | |
| 39 #include "breakpad/src/common/linux/linux_libc_support.h" | |
| 40 #include "breakpad/src/common/memory.h" | |
| 41 #include "components/breakpad/app/breakpad_client.h" | |
| 42 #include "components/breakpad/app/breakpad_linux_impl.h" | |
| 43 #include "content/public/common/content_descriptors.h" | |
| 44 | |
| 45 #if defined(OS_ANDROID) | |
| 46 #include <android/log.h> | |
| 47 #include <sys/stat.h> | |
| 48 | |
| 49 #include "base/android/build_info.h" | |
| 50 #include "base/android/path_utils.h" | |
| 51 #endif | |
| 52 #include "third_party/lss/linux_syscall_support.h" | |
| 53 | |
| 54 #if defined(ADDRESS_SANITIZER) | |
| 55 #include <ucontext.h> // for getcontext(). | |
| 56 #endif | |
| 57 | |
| 58 #if defined(OS_ANDROID) | |
| 59 #define STAT_STRUCT struct stat | |
| 60 #define FSTAT_FUNC fstat | |
| 61 #else | |
| 62 #define STAT_STRUCT struct kernel_stat | |
| 63 #define FSTAT_FUNC sys_fstat | |
| 64 #endif | |
| 65 | |
| 66 // Some versions of gcc are prone to warn about unused return values. In cases | |
| 67 // where we either a) know the call cannot fail, or b) there is nothing we | |
| 68 // can do when a call fails, we mark the return code as ignored. This avoids | |
| 69 // spurious compiler warnings. | |
| 70 #define IGNORE_RET(x) do { if (x); } while (0) | |
| 71 | |
| 72 using google_breakpad::ExceptionHandler; | |
| 73 using google_breakpad::MinidumpDescriptor; | |
| 74 | |
| 75 namespace breakpad { | |
| 76 | |
| 77 namespace { | |
| 78 | |
| 79 #if !defined(OS_CHROMEOS) | |
| 80 const char kUploadURL[] = "https://clients2.google.com/cr/report"; | |
| 81 #endif | |
| 82 | |
| 83 bool g_is_crash_reporter_enabled = false; | |
| 84 uint64_t g_process_start_time = 0; | |
| 85 pid_t g_pid = 0; | |
| 86 char* g_crash_log_path = NULL; | |
| 87 ExceptionHandler* g_breakpad = NULL; | |
| 88 | |
| 89 #if defined(ADDRESS_SANITIZER) | |
| 90 const char* g_asan_report_str = NULL; | |
| 91 #endif | |
| 92 #if defined(OS_ANDROID) | |
| 93 char* g_process_type = NULL; | |
| 94 #endif | |
| 95 | |
| 96 CrashKeyStorage* g_crash_keys = NULL; | |
| 97 | |
| 98 // Writes the value |v| as 16 hex characters to the memory pointed at by | |
| 99 // |output|. | |
| 100 void write_uint64_hex(char* output, uint64_t v) { | |
| 101 static const char hextable[] = "0123456789abcdef"; | |
| 102 | |
| 103 for (int i = 15; i >= 0; --i) { | |
| 104 output[i] = hextable[v & 15]; | |
| 105 v >>= 4; | |
| 106 } | |
| 107 } | |
| 108 | |
| 109 // The following helper functions are for calculating uptime. | |
| 110 | |
| 111 // Converts a struct timeval to milliseconds. | |
| 112 uint64_t timeval_to_ms(struct timeval *tv) { | |
| 113 uint64_t ret = tv->tv_sec; // Avoid overflow by explicitly using a uint64_t. | |
| 114 ret *= 1000; | |
| 115 ret += tv->tv_usec / 1000; | |
| 116 return ret; | |
| 117 } | |
| 118 | |
| 119 // Converts a struct timeval to milliseconds. | |
| 120 uint64_t kernel_timeval_to_ms(struct kernel_timeval *tv) { | |
| 121 uint64_t ret = tv->tv_sec; // Avoid overflow by explicitly using a uint64_t. | |
| 122 ret *= 1000; | |
| 123 ret += tv->tv_usec / 1000; | |
| 124 return ret; | |
| 125 } | |
| 126 | |
| 127 // String buffer size to use to convert a uint64_t to string. | |
| 128 const size_t kUint64StringSize = 21; | |
| 129 | |
| 130 void SetProcessStartTime() { | |
| 131 // Set the base process start time value. | |
| 132 struct timeval tv; | |
| 133 if (!gettimeofday(&tv, NULL)) | |
| 134 g_process_start_time = timeval_to_ms(&tv); | |
| 135 else | |
| 136 g_process_start_time = 0; | |
| 137 } | |
| 138 | |
| 139 // uint64_t version of my_int_len() from | |
| 140 // breakpad/src/common/linux/linux_libc_support.h. Return the length of the | |
| 141 // given, non-negative integer when expressed in base 10. | |
| 142 unsigned my_uint64_len(uint64_t i) { | |
| 143 if (!i) | |
| 144 return 1; | |
| 145 | |
| 146 unsigned len = 0; | |
| 147 while (i) { | |
| 148 len++; | |
| 149 i /= 10; | |
| 150 } | |
| 151 | |
| 152 return len; | |
| 153 } | |
| 154 | |
| 155 // uint64_t version of my_uitos() from | |
| 156 // breakpad/src/common/linux/linux_libc_support.h. Convert a non-negative | |
| 157 // integer to a string (not null-terminated). | |
| 158 void my_uint64tos(char* output, uint64_t i, unsigned i_len) { | |
| 159 for (unsigned index = i_len; index; --index, i /= 10) | |
| 160 output[index - 1] = '0' + (i % 10); | |
| 161 } | |
| 162 | |
| 163 #if defined(OS_ANDROID) | |
| 164 char* my_strncpy(char* dst, const char* src, size_t len) { | |
| 165 int i = len; | |
| 166 char* p = dst; | |
| 167 if (!dst || !src) | |
| 168 return dst; | |
| 169 while (i != 0 && *src != '\0') { | |
| 170 *p++ = *src++; | |
| 171 i--; | |
| 172 } | |
| 173 while (i != 0) { | |
| 174 *p++ = '\0'; | |
| 175 i--; | |
| 176 } | |
| 177 return dst; | |
| 178 } | |
| 179 | |
| 180 char* my_strncat(char *dest, const char* src, size_t len) { | |
| 181 char* ret = dest; | |
| 182 while (*dest) | |
| 183 dest++; | |
| 184 while (len--) | |
| 185 if (!(*dest++ = *src++)) | |
| 186 return ret; | |
| 187 *dest = 0; | |
| 188 return ret; | |
| 189 } | |
| 190 #endif | |
| 191 | |
| 192 #if !defined(OS_CHROMEOS) | |
| 193 bool my_isxdigit(char c) { | |
| 194 return (c >= '0' && c <= '9') || ((c | 0x20) >= 'a' && (c | 0x20) <= 'f'); | |
| 195 } | |
| 196 #endif | |
| 197 | |
| 198 size_t LengthWithoutTrailingSpaces(const char* str, size_t len) { | |
| 199 while (len > 0 && str[len - 1] == ' ') { | |
| 200 len--; | |
| 201 } | |
| 202 return len; | |
| 203 } | |
| 204 | |
| 205 void SetClientIdFromCommandLine(const CommandLine& command_line) { | |
| 206 // Get the guid from the command line switch. | |
| 207 std::string switch_value = | |
| 208 command_line.GetSwitchValueASCII(switches::kEnableCrashReporter); | |
| 209 GetBreakpadClient()->SetBreakpadClientIdFromGUID(switch_value); | |
| 210 } | |
| 211 | |
| 212 // MIME substrings. | |
| 213 #if defined(OS_CHROMEOS) | |
| 214 const char g_sep[] = ":"; | |
| 215 #endif | |
| 216 const char g_rn[] = "\r\n"; | |
| 217 const char g_form_data_msg[] = "Content-Disposition: form-data; name=\""; | |
| 218 const char g_quote_msg[] = "\""; | |
| 219 const char g_dashdash_msg[] = "--"; | |
| 220 const char g_dump_msg[] = "upload_file_minidump\"; filename=\"dump\""; | |
| 221 #if defined(ADDRESS_SANITIZER) | |
| 222 const char g_log_msg[] = "upload_file_log\"; filename=\"log\""; | |
| 223 #endif | |
| 224 const char g_content_type_msg[] = "Content-Type: application/octet-stream"; | |
| 225 | |
| 226 // MimeWriter manages an iovec for writing MIMEs to a file. | |
| 227 class MimeWriter { | |
| 228 public: | |
| 229 static const int kIovCapacity = 30; | |
| 230 static const size_t kMaxCrashChunkSize = 64; | |
| 231 | |
| 232 MimeWriter(int fd, const char* const mime_boundary); | |
| 233 ~MimeWriter(); | |
| 234 | |
| 235 // Append boundary. | |
| 236 virtual void AddBoundary(); | |
| 237 | |
| 238 // Append end of file boundary. | |
| 239 virtual void AddEnd(); | |
| 240 | |
| 241 // Append key/value pair with specified sizes. | |
| 242 virtual void AddPairData(const char* msg_type, | |
| 243 size_t msg_type_size, | |
| 244 const char* msg_data, | |
| 245 size_t msg_data_size); | |
| 246 | |
| 247 // Append key/value pair. | |
| 248 void AddPairString(const char* msg_type, | |
| 249 const char* msg_data) { | |
| 250 AddPairData(msg_type, my_strlen(msg_type), msg_data, my_strlen(msg_data)); | |
| 251 } | |
| 252 | |
| 253 // Append key/value pair, splitting value into chunks no larger than | |
| 254 // |chunk_size|. |chunk_size| cannot be greater than |kMaxCrashChunkSize|. | |
| 255 // The msg_type string will have a counter suffix to distinguish each chunk. | |
| 256 virtual void AddPairDataInChunks(const char* msg_type, | |
| 257 size_t msg_type_size, | |
| 258 const char* msg_data, | |
| 259 size_t msg_data_size, | |
| 260 size_t chunk_size, | |
| 261 bool strip_trailing_spaces); | |
| 262 | |
| 263 // Add binary file contents to be uploaded with the specified filename. | |
| 264 virtual void AddFileContents(const char* filename_msg, | |
| 265 uint8_t* file_data, | |
| 266 size_t file_size); | |
| 267 | |
| 268 // Flush any pending iovecs to the output file. | |
| 269 void Flush() { | |
| 270 IGNORE_RET(sys_writev(fd_, iov_, iov_index_)); | |
| 271 iov_index_ = 0; | |
| 272 } | |
| 273 | |
| 274 protected: | |
| 275 void AddItem(const void* base, size_t size); | |
| 276 // Minor performance trade-off for easier-to-maintain code. | |
| 277 void AddString(const char* str) { | |
| 278 AddItem(str, my_strlen(str)); | |
| 279 } | |
| 280 void AddItemWithoutTrailingSpaces(const void* base, size_t size); | |
| 281 | |
| 282 struct kernel_iovec iov_[kIovCapacity]; | |
| 283 int iov_index_; | |
| 284 | |
| 285 // Output file descriptor. | |
| 286 int fd_; | |
| 287 | |
| 288 const char* const mime_boundary_; | |
| 289 | |
| 290 private: | |
| 291 DISALLOW_COPY_AND_ASSIGN(MimeWriter); | |
| 292 }; | |
| 293 | |
| 294 MimeWriter::MimeWriter(int fd, const char* const mime_boundary) | |
| 295 : iov_index_(0), | |
| 296 fd_(fd), | |
| 297 mime_boundary_(mime_boundary) { | |
| 298 } | |
| 299 | |
| 300 MimeWriter::~MimeWriter() { | |
| 301 } | |
| 302 | |
| 303 void MimeWriter::AddBoundary() { | |
| 304 AddString(mime_boundary_); | |
| 305 AddString(g_rn); | |
| 306 } | |
| 307 | |
| 308 void MimeWriter::AddEnd() { | |
| 309 AddString(mime_boundary_); | |
| 310 AddString(g_dashdash_msg); | |
| 311 AddString(g_rn); | |
| 312 } | |
| 313 | |
| 314 void MimeWriter::AddPairData(const char* msg_type, | |
| 315 size_t msg_type_size, | |
| 316 const char* msg_data, | |
| 317 size_t msg_data_size) { | |
| 318 AddString(g_form_data_msg); | |
| 319 AddItem(msg_type, msg_type_size); | |
| 320 AddString(g_quote_msg); | |
| 321 AddString(g_rn); | |
| 322 AddString(g_rn); | |
| 323 AddItem(msg_data, msg_data_size); | |
| 324 AddString(g_rn); | |
| 325 } | |
| 326 | |
| 327 void MimeWriter::AddPairDataInChunks(const char* msg_type, | |
| 328 size_t msg_type_size, | |
| 329 const char* msg_data, | |
| 330 size_t msg_data_size, | |
| 331 size_t chunk_size, | |
| 332 bool strip_trailing_spaces) { | |
| 333 if (chunk_size > kMaxCrashChunkSize) | |
| 334 return; | |
| 335 | |
| 336 unsigned i = 0; | |
| 337 size_t done = 0, msg_length = msg_data_size; | |
| 338 | |
| 339 while (msg_length) { | |
| 340 char num[kUint64StringSize]; | |
| 341 const unsigned num_len = my_uint_len(++i); | |
| 342 my_uitos(num, i, num_len); | |
| 343 | |
| 344 size_t chunk_len = std::min(chunk_size, msg_length); | |
| 345 | |
| 346 AddString(g_form_data_msg); | |
| 347 AddItem(msg_type, msg_type_size); | |
| 348 AddItem(num, num_len); | |
| 349 AddString(g_quote_msg); | |
| 350 AddString(g_rn); | |
| 351 AddString(g_rn); | |
| 352 if (strip_trailing_spaces) { | |
| 353 AddItemWithoutTrailingSpaces(msg_data + done, chunk_len); | |
| 354 } else { | |
| 355 AddItem(msg_data + done, chunk_len); | |
| 356 } | |
| 357 AddString(g_rn); | |
| 358 AddBoundary(); | |
| 359 Flush(); | |
| 360 | |
| 361 done += chunk_len; | |
| 362 msg_length -= chunk_len; | |
| 363 } | |
| 364 } | |
| 365 | |
| 366 void MimeWriter::AddFileContents(const char* filename_msg, uint8_t* file_data, | |
| 367 size_t file_size) { | |
| 368 AddString(g_form_data_msg); | |
| 369 AddString(filename_msg); | |
| 370 AddString(g_rn); | |
| 371 AddString(g_content_type_msg); | |
| 372 AddString(g_rn); | |
| 373 AddString(g_rn); | |
| 374 AddItem(file_data, file_size); | |
| 375 AddString(g_rn); | |
| 376 } | |
| 377 | |
| 378 void MimeWriter::AddItem(const void* base, size_t size) { | |
| 379 // Check if the iovec is full and needs to be flushed to output file. | |
| 380 if (iov_index_ == kIovCapacity) { | |
| 381 Flush(); | |
| 382 } | |
| 383 iov_[iov_index_].iov_base = const_cast<void*>(base); | |
| 384 iov_[iov_index_].iov_len = size; | |
| 385 ++iov_index_; | |
| 386 } | |
| 387 | |
| 388 void MimeWriter::AddItemWithoutTrailingSpaces(const void* base, size_t size) { | |
| 389 AddItem(base, LengthWithoutTrailingSpaces(static_cast<const char*>(base), | |
| 390 size)); | |
| 391 } | |
| 392 | |
| 393 #if defined(OS_CHROMEOS) | |
| 394 // This subclass is used on Chromium OS to report crashes in a format easy for | |
| 395 // the central crash reporting facility to understand. | |
| 396 // Format is <name>:<data length in decimal>:<data> | |
| 397 class CrashReporterWriter : public MimeWriter { | |
| 398 public: | |
| 399 explicit CrashReporterWriter(int fd); | |
| 400 | |
| 401 virtual void AddBoundary() OVERRIDE; | |
| 402 | |
| 403 virtual void AddEnd() OVERRIDE; | |
| 404 | |
| 405 virtual void AddPairData(const char* msg_type, | |
| 406 size_t msg_type_size, | |
| 407 const char* msg_data, | |
| 408 size_t msg_data_size) OVERRIDE; | |
| 409 | |
| 410 virtual void AddPairDataInChunks(const char* msg_type, | |
| 411 size_t msg_type_size, | |
| 412 const char* msg_data, | |
| 413 size_t msg_data_size, | |
| 414 size_t chunk_size, | |
| 415 bool strip_trailing_spaces) OVERRIDE; | |
| 416 | |
| 417 virtual void AddFileContents(const char* filename_msg, | |
| 418 uint8_t* file_data, | |
| 419 size_t file_size) OVERRIDE; | |
| 420 | |
| 421 private: | |
| 422 DISALLOW_COPY_AND_ASSIGN(CrashReporterWriter); | |
| 423 }; | |
| 424 | |
| 425 | |
| 426 CrashReporterWriter::CrashReporterWriter(int fd) : MimeWriter(fd, "") {} | |
| 427 | |
| 428 // No-ops. | |
| 429 void CrashReporterWriter::AddBoundary() {} | |
| 430 void CrashReporterWriter::AddEnd() {} | |
| 431 | |
| 432 void CrashReporterWriter::AddPairData(const char* msg_type, | |
| 433 size_t msg_type_size, | |
| 434 const char* msg_data, | |
| 435 size_t msg_data_size) { | |
| 436 char data[kUint64StringSize]; | |
| 437 const unsigned data_len = my_uint_len(msg_data_size); | |
| 438 my_uitos(data, msg_data_size, data_len); | |
| 439 | |
| 440 AddItem(msg_type, msg_type_size); | |
| 441 AddString(g_sep); | |
| 442 AddItem(data, data_len); | |
| 443 AddString(g_sep); | |
| 444 AddItem(msg_data, msg_data_size); | |
| 445 Flush(); | |
| 446 } | |
| 447 | |
| 448 void CrashReporterWriter::AddPairDataInChunks(const char* msg_type, | |
| 449 size_t msg_type_size, | |
| 450 const char* msg_data, | |
| 451 size_t msg_data_size, | |
| 452 size_t chunk_size, | |
| 453 bool strip_trailing_spaces) { | |
| 454 if (chunk_size > kMaxCrashChunkSize) | |
| 455 return; | |
| 456 | |
| 457 unsigned i = 0; | |
| 458 size_t done = 0; | |
| 459 size_t msg_length = msg_data_size; | |
| 460 | |
| 461 while (msg_length) { | |
| 462 char num[kUint64StringSize]; | |
| 463 const unsigned num_len = my_uint_len(++i); | |
| 464 my_uitos(num, i, num_len); | |
| 465 | |
| 466 size_t chunk_len = std::min(chunk_size, msg_length); | |
| 467 | |
| 468 size_t write_len = chunk_len; | |
| 469 if (strip_trailing_spaces) { | |
| 470 // Take care of this here because we need to know the exact length of | |
| 471 // what is going to be written. | |
| 472 write_len = LengthWithoutTrailingSpaces(msg_data + done, write_len); | |
| 473 } | |
| 474 | |
| 475 char data[kUint64StringSize]; | |
| 476 const unsigned data_len = my_uint_len(write_len); | |
| 477 my_uitos(data, write_len, data_len); | |
| 478 | |
| 479 AddItem(msg_type, msg_type_size); | |
| 480 AddItem(num, num_len); | |
| 481 AddString(g_sep); | |
| 482 AddItem(data, data_len); | |
| 483 AddString(g_sep); | |
| 484 AddItem(msg_data + done, write_len); | |
| 485 Flush(); | |
| 486 | |
| 487 done += chunk_len; | |
| 488 msg_length -= chunk_len; | |
| 489 } | |
| 490 } | |
| 491 | |
| 492 void CrashReporterWriter::AddFileContents(const char* filename_msg, | |
| 493 uint8_t* file_data, | |
| 494 size_t file_size) { | |
| 495 char data[kUint64StringSize]; | |
| 496 const unsigned data_len = my_uint_len(file_size); | |
| 497 my_uitos(data, file_size, data_len); | |
| 498 | |
| 499 AddString(filename_msg); | |
| 500 AddString(g_sep); | |
| 501 AddItem(data, data_len); | |
| 502 AddString(g_sep); | |
| 503 AddItem(file_data, file_size); | |
| 504 Flush(); | |
| 505 } | |
| 506 #endif // defined(OS_CHROMEOS) | |
| 507 | |
| 508 void DumpProcess() { | |
| 509 if (g_breakpad) | |
| 510 g_breakpad->WriteMinidump(); | |
| 511 } | |
| 512 | |
| 513 #if defined(OS_ANDROID) | |
| 514 const char kGoogleBreakpad[] = "google-breakpad"; | |
| 515 #endif | |
| 516 | |
| 517 size_t WriteLog(const char* buf, size_t nbytes) { | |
| 518 #if defined(OS_ANDROID) | |
| 519 return __android_log_write(ANDROID_LOG_WARN, kGoogleBreakpad, buf); | |
| 520 #else | |
| 521 return sys_write(2, buf, nbytes); | |
| 522 #endif | |
| 523 } | |
| 524 | |
| 525 size_t WriteNewline() { | |
| 526 return WriteLog("\n", 1); | |
| 527 } | |
| 528 | |
| 529 #if defined(OS_ANDROID) | |
| 530 // Android's native crash handler outputs a diagnostic tombstone to the device | |
| 531 // log. By returning false from the HandlerCallbacks, breakpad will reinstall | |
| 532 // the previous (i.e. native) signal handlers before returning from its own | |
| 533 // handler. A Chrome build fingerprint is written to the log, so that the | |
| 534 // specific build of Chrome and the location of the archived Chrome symbols can | |
| 535 // be determined directly from it. | |
| 536 bool FinalizeCrashDoneAndroid() { | |
| 537 base::android::BuildInfo* android_build_info = | |
| 538 base::android::BuildInfo::GetInstance(); | |
| 539 | |
| 540 __android_log_write(ANDROID_LOG_WARN, kGoogleBreakpad, | |
| 541 "### ### ### ### ### ### ### ### ### ### ### ### ###"); | |
| 542 __android_log_write(ANDROID_LOG_WARN, kGoogleBreakpad, | |
| 543 "Chrome build fingerprint:"); | |
| 544 __android_log_write(ANDROID_LOG_WARN, kGoogleBreakpad, | |
| 545 android_build_info->package_version_name()); | |
| 546 __android_log_write(ANDROID_LOG_WARN, kGoogleBreakpad, | |
| 547 android_build_info->package_version_code()); | |
| 548 __android_log_write(ANDROID_LOG_WARN, kGoogleBreakpad, | |
| 549 CHROME_BUILD_ID); | |
| 550 __android_log_write(ANDROID_LOG_WARN, kGoogleBreakpad, | |
| 551 "### ### ### ### ### ### ### ### ### ### ### ### ###"); | |
| 552 return false; | |
| 553 } | |
| 554 #endif | |
| 555 | |
| 556 bool CrashDone(const MinidumpDescriptor& minidump, | |
| 557 const bool upload, | |
| 558 const bool succeeded) { | |
| 559 // WARNING: this code runs in a compromised context. It may not call into | |
| 560 // libc nor allocate memory normally. | |
| 561 if (!succeeded) { | |
| 562 const char msg[] = "Failed to generate minidump."; | |
| 563 WriteLog(msg, sizeof(msg) - 1); | |
| 564 return false; | |
| 565 } | |
| 566 | |
| 567 DCHECK(!minidump.IsFD()); | |
| 568 | |
| 569 BreakpadInfo info = {0}; | |
| 570 info.filename = minidump.path(); | |
| 571 info.fd = minidump.fd(); | |
| 572 #if defined(ADDRESS_SANITIZER) | |
| 573 google_breakpad::PageAllocator allocator; | |
| 574 const size_t log_path_len = my_strlen(minidump.path()); | |
| 575 char* log_path = reinterpret_cast<char*>(allocator.Alloc(log_path_len + 1)); | |
| 576 my_memcpy(log_path, minidump.path(), log_path_len); | |
| 577 my_memcpy(log_path + log_path_len - 4, ".log", 4); | |
| 578 log_path[log_path_len] = '\0'; | |
| 579 info.log_filename = log_path; | |
| 580 #endif | |
| 581 info.process_type = "browser"; | |
| 582 info.process_type_length = 7; | |
| 583 info.distro = base::g_linux_distro; | |
| 584 info.distro_length = my_strlen(base::g_linux_distro); | |
| 585 info.upload = upload; | |
| 586 info.process_start_time = g_process_start_time; | |
| 587 info.oom_size = base::g_oom_size; | |
| 588 info.pid = g_pid; | |
| 589 info.crash_keys = g_crash_keys; | |
| 590 HandleCrashDump(info); | |
| 591 #if defined(OS_ANDROID) | |
| 592 return FinalizeCrashDoneAndroid(); | |
| 593 #else | |
| 594 return true; | |
| 595 #endif | |
| 596 } | |
| 597 | |
| 598 // Wrapper function, do not add more code here. | |
| 599 bool CrashDoneNoUpload(const MinidumpDescriptor& minidump, | |
| 600 void* context, | |
| 601 bool succeeded) { | |
| 602 return CrashDone(minidump, false, succeeded); | |
| 603 } | |
| 604 | |
| 605 #if !defined(OS_ANDROID) | |
| 606 // Wrapper function, do not add more code here. | |
| 607 bool CrashDoneUpload(const MinidumpDescriptor& minidump, | |
| 608 void* context, | |
| 609 bool succeeded) { | |
| 610 return CrashDone(minidump, true, succeeded); | |
| 611 } | |
| 612 #endif | |
| 613 | |
| 614 #if defined(ADDRESS_SANITIZER) | |
| 615 extern "C" | |
| 616 void __asan_set_error_report_callback(void (*cb)(const char*)); | |
| 617 | |
| 618 extern "C" | |
| 619 void AsanLinuxBreakpadCallback(const char* report) { | |
| 620 g_asan_report_str = report; | |
| 621 // Send minidump here. | |
| 622 g_breakpad->SimulateSignalDelivery(SIGKILL); | |
| 623 } | |
| 624 #endif | |
| 625 | |
| 626 void EnableCrashDumping(bool unattended) { | |
| 627 g_is_crash_reporter_enabled = true; | |
| 628 | |
| 629 base::FilePath tmp_path("/tmp"); | |
| 630 PathService::Get(base::DIR_TEMP, &tmp_path); | |
| 631 | |
| 632 base::FilePath dumps_path(tmp_path); | |
| 633 if (GetBreakpadClient()->GetCrashDumpLocation(&dumps_path)) { | |
| 634 base::FilePath logfile = | |
| 635 dumps_path.Append(GetBreakpadClient()->GetReporterLogFilename()); | |
| 636 std::string logfile_str = logfile.value(); | |
| 637 const size_t crash_log_path_len = logfile_str.size() + 1; | |
| 638 g_crash_log_path = new char[crash_log_path_len]; | |
| 639 strncpy(g_crash_log_path, logfile_str.c_str(), crash_log_path_len); | |
| 640 } | |
| 641 DCHECK(!g_breakpad); | |
| 642 MinidumpDescriptor minidump_descriptor(dumps_path.value()); | |
| 643 minidump_descriptor.set_size_limit(kMaxMinidumpFileSize); | |
| 644 #if defined(OS_ANDROID) | |
| 645 unattended = true; // Android never uploads directly. | |
| 646 #endif | |
| 647 if (unattended) { | |
| 648 g_breakpad = new ExceptionHandler( | |
| 649 minidump_descriptor, | |
| 650 NULL, | |
| 651 CrashDoneNoUpload, | |
| 652 NULL, | |
| 653 true, // Install handlers. | |
| 654 -1); // Server file descriptor. -1 for in-process. | |
| 655 return; | |
| 656 } | |
| 657 | |
| 658 #if !defined(OS_ANDROID) | |
| 659 // Attended mode | |
| 660 g_breakpad = new ExceptionHandler( | |
| 661 minidump_descriptor, | |
| 662 NULL, | |
| 663 CrashDoneUpload, | |
| 664 NULL, | |
| 665 true, // Install handlers. | |
| 666 -1); // Server file descriptor. -1 for in-process. | |
| 667 #endif | |
| 668 } | |
| 669 | |
| 670 #if defined(OS_ANDROID) | |
| 671 bool CrashDoneInProcessNoUpload( | |
| 672 const google_breakpad::MinidumpDescriptor& descriptor, | |
| 673 void* context, | |
| 674 const bool succeeded) { | |
| 675 // WARNING: this code runs in a compromised context. It may not call into | |
| 676 // libc nor allocate memory normally. | |
| 677 if (!succeeded) { | |
| 678 static const char msg[] = "Crash dump generation failed.\n"; | |
| 679 WriteLog(msg, sizeof(msg) - 1); | |
| 680 return false; | |
| 681 } | |
| 682 | |
| 683 // Start constructing the message to send to the browser. | |
| 684 BreakpadInfo info = {0}; | |
| 685 info.filename = NULL; | |
| 686 info.fd = descriptor.fd(); | |
| 687 info.process_type = g_process_type; | |
| 688 info.process_type_length = my_strlen(g_process_type); | |
| 689 info.distro = NULL; | |
| 690 info.distro_length = 0; | |
| 691 info.upload = false; | |
| 692 info.process_start_time = g_process_start_time; | |
| 693 info.pid = g_pid; | |
| 694 info.crash_keys = g_crash_keys; | |
| 695 HandleCrashDump(info); | |
| 696 bool finalize_result = FinalizeCrashDoneAndroid(); | |
| 697 base::android::BuildInfo* android_build_info = | |
| 698 base::android::BuildInfo::GetInstance(); | |
| 699 if (android_build_info->sdk_int() >= 18 && | |
| 700 my_strcmp(android_build_info->build_type(), "eng") != 0 && | |
| 701 my_strcmp(android_build_info->build_type(), "userdebug") != 0) { | |
| 702 // On JB MR2 and later, the system crash handler displays a dialog. For | |
| 703 // renderer crashes, this is a bad user experience and so this is disabled | |
| 704 // for user builds of Android. | |
| 705 // TODO(cjhopman): There should be some way to recover the crash stack from | |
| 706 // non-uploading user clients. See http://crbug.com/273706. | |
| 707 __android_log_write(ANDROID_LOG_WARN, | |
| 708 kGoogleBreakpad, | |
| 709 "Tombstones are disabled on JB MR2+ user builds."); | |
| 710 __android_log_write(ANDROID_LOG_WARN, | |
| 711 kGoogleBreakpad, | |
| 712 "### ### ### ### ### ### ### ### ### ### ### ### ###"); | |
| 713 return true; | |
| 714 } else { | |
| 715 return finalize_result; | |
| 716 } | |
| 717 } | |
| 718 | |
| 719 void EnableNonBrowserCrashDumping(const std::string& process_type, | |
| 720 int minidump_fd) { | |
| 721 // This will guarantee that the BuildInfo has been initialized and subsequent | |
| 722 // calls will not require memory allocation. | |
| 723 base::android::BuildInfo::GetInstance(); | |
| 724 SetClientIdFromCommandLine(*CommandLine::ForCurrentProcess()); | |
| 725 | |
| 726 // On Android, the current sandboxing uses process isolation, in which the | |
| 727 // child process runs with a different UID. That breaks the normal crash | |
| 728 // reporting where the browser process generates the minidump by inspecting | |
| 729 // the child process. This is because the browser process now does not have | |
| 730 // the permission to access the states of the child process (as it has a | |
| 731 // different UID). | |
| 732 // TODO(jcivelli): http://b/issue?id=6776356 we should use a watchdog | |
| 733 // process forked from the renderer process that generates the minidump. | |
| 734 if (minidump_fd == -1) { | |
| 735 LOG(ERROR) << "Minidump file descriptor not found, crash reporting will " | |
| 736 " not work."; | |
| 737 return; | |
| 738 } | |
| 739 SetProcessStartTime(); | |
| 740 g_pid = getpid(); | |
| 741 | |
| 742 g_is_crash_reporter_enabled = true; | |
| 743 // Save the process type (it is leaked). | |
| 744 const size_t process_type_len = process_type.size() + 1; | |
| 745 g_process_type = new char[process_type_len]; | |
| 746 strncpy(g_process_type, process_type.c_str(), process_type_len); | |
| 747 new google_breakpad::ExceptionHandler(MinidumpDescriptor(minidump_fd), | |
| 748 NULL, CrashDoneInProcessNoUpload, NULL, true, -1); | |
| 749 } | |
| 750 #else | |
| 751 // Non-Browser = Extension, Gpu, Plugins, Ppapi and Renderer | |
| 752 class NonBrowserCrashHandler : public google_breakpad::CrashGenerationClient { | |
| 753 public: | |
| 754 NonBrowserCrashHandler() | |
| 755 : server_fd_(base::GlobalDescriptors::GetInstance()->Get( | |
| 756 kCrashDumpSignal)) { | |
| 757 } | |
| 758 | |
| 759 virtual ~NonBrowserCrashHandler() {} | |
| 760 | |
| 761 virtual bool RequestDump(const void* crash_context, | |
| 762 size_t crash_context_size) OVERRIDE { | |
| 763 int fds[2] = { -1, -1 }; | |
| 764 if (sys_socketpair(AF_UNIX, SOCK_STREAM, 0, fds) < 0) { | |
| 765 static const char msg[] = "Failed to create socket for crash dumping.\n"; | |
| 766 WriteLog(msg, sizeof(msg) - 1); | |
| 767 return false; | |
| 768 } | |
| 769 | |
| 770 // Start constructing the message to send to the browser. | |
| 771 char b; // Dummy variable for sys_read below. | |
| 772 const char* b_addr = &b; // Get the address of |b| so we can create the | |
| 773 // expected /proc/[pid]/syscall content in the | |
| 774 // browser to convert namespace tids. | |
| 775 | |
| 776 // The length of the control message: | |
| 777 static const unsigned kControlMsgSize = sizeof(int); | |
| 778 static const unsigned kControlMsgSpaceSize = CMSG_SPACE(kControlMsgSize); | |
| 779 static const unsigned kControlMsgLenSize = CMSG_LEN(kControlMsgSize); | |
| 780 | |
| 781 struct kernel_msghdr msg; | |
| 782 my_memset(&msg, 0, sizeof(struct kernel_msghdr)); | |
| 783 struct kernel_iovec iov[kCrashIovSize]; | |
| 784 iov[0].iov_base = const_cast<void*>(crash_context); | |
| 785 iov[0].iov_len = crash_context_size; | |
| 786 iov[1].iov_base = &b_addr; | |
| 787 iov[1].iov_len = sizeof(b_addr); | |
| 788 iov[2].iov_base = &fds[0]; | |
| 789 iov[2].iov_len = sizeof(fds[0]); | |
| 790 iov[3].iov_base = &g_process_start_time; | |
| 791 iov[3].iov_len = sizeof(g_process_start_time); | |
| 792 iov[4].iov_base = &base::g_oom_size; | |
| 793 iov[4].iov_len = sizeof(base::g_oom_size); | |
| 794 google_breakpad::SerializedNonAllocatingMap* serialized_map; | |
| 795 iov[5].iov_len = g_crash_keys->Serialize( | |
| 796 const_cast<const google_breakpad::SerializedNonAllocatingMap**>( | |
| 797 &serialized_map)); | |
| 798 iov[5].iov_base = serialized_map; | |
| 799 #if !defined(ADDRESS_SANITIZER) | |
| 800 COMPILE_ASSERT(5 == kCrashIovSize - 1, Incorrect_Number_Of_Iovec_Members); | |
| 801 #else | |
| 802 iov[6].iov_base = const_cast<char*>(g_asan_report_str); | |
| 803 iov[6].iov_len = kMaxAsanReportSize + 1; | |
| 804 COMPILE_ASSERT(6 == kCrashIovSize - 1, Incorrect_Number_Of_Iovec_Members); | |
| 805 #endif | |
| 806 | |
| 807 msg.msg_iov = iov; | |
| 808 msg.msg_iovlen = kCrashIovSize; | |
| 809 char cmsg[kControlMsgSpaceSize]; | |
| 810 my_memset(cmsg, 0, kControlMsgSpaceSize); | |
| 811 msg.msg_control = cmsg; | |
| 812 msg.msg_controllen = sizeof(cmsg); | |
| 813 | |
| 814 struct cmsghdr *hdr = CMSG_FIRSTHDR(&msg); | |
| 815 hdr->cmsg_level = SOL_SOCKET; | |
| 816 hdr->cmsg_type = SCM_RIGHTS; | |
| 817 hdr->cmsg_len = kControlMsgLenSize; | |
| 818 ((int*)CMSG_DATA(hdr))[0] = fds[1]; | |
| 819 | |
| 820 if (HANDLE_EINTR(sys_sendmsg(server_fd_, &msg, 0)) < 0) { | |
| 821 static const char errmsg[] = "Failed to tell parent about crash.\n"; | |
| 822 WriteLog(errmsg, sizeof(errmsg) - 1); | |
| 823 IGNORE_RET(sys_close(fds[0])); | |
| 824 IGNORE_RET(sys_close(fds[1])); | |
| 825 return false; | |
| 826 } | |
| 827 IGNORE_RET(sys_close(fds[1])); | |
| 828 | |
| 829 if (HANDLE_EINTR(sys_read(fds[0], &b, 1)) != 1) { | |
| 830 static const char errmsg[] = "Parent failed to complete crash dump.\n"; | |
| 831 WriteLog(errmsg, sizeof(errmsg) - 1); | |
| 832 } | |
| 833 IGNORE_RET(sys_close(fds[0])); | |
| 834 | |
| 835 return true; | |
| 836 } | |
| 837 | |
| 838 private: | |
| 839 // The pipe FD to the browser process, which will handle the crash dumping. | |
| 840 const int server_fd_; | |
| 841 | |
| 842 DISALLOW_COPY_AND_ASSIGN(NonBrowserCrashHandler); | |
| 843 }; | |
| 844 | |
| 845 void EnableNonBrowserCrashDumping() { | |
| 846 g_is_crash_reporter_enabled = true; | |
| 847 // We deliberately leak this object. | |
| 848 DCHECK(!g_breakpad); | |
| 849 | |
| 850 g_breakpad = new ExceptionHandler( | |
| 851 MinidumpDescriptor("/tmp"), // Unused but needed or Breakpad will assert. | |
| 852 NULL, | |
| 853 NULL, | |
| 854 NULL, | |
| 855 true, | |
| 856 -1); | |
| 857 g_breakpad->set_crash_generation_client(new NonBrowserCrashHandler()); | |
| 858 } | |
| 859 #endif // defined(OS_ANDROID) | |
| 860 | |
| 861 void SetCrashKeyValue(const base::StringPiece& key, | |
| 862 const base::StringPiece& value) { | |
| 863 g_crash_keys->SetKeyValue(key.data(), value.data()); | |
| 864 } | |
| 865 | |
| 866 void ClearCrashKey(const base::StringPiece& key) { | |
| 867 g_crash_keys->RemoveKey(key.data()); | |
| 868 } | |
| 869 | |
| 870 // GetBreakpadClient() cannot call any Set methods until after InitCrashKeys(). | |
| 871 void InitCrashKeys() { | |
| 872 g_crash_keys = new CrashKeyStorage; | |
| 873 GetBreakpadClient()->RegisterCrashKeys(); | |
| 874 base::debug::SetCrashKeyReportingFunctions(&SetCrashKeyValue, &ClearCrashKey); | |
| 875 } | |
| 876 | |
| 877 // Miscellaneous initialization functions to call after Breakpad has been | |
| 878 // enabled. | |
| 879 void PostEnableBreakpadInitialization() { | |
| 880 SetProcessStartTime(); | |
| 881 g_pid = getpid(); | |
| 882 | |
| 883 base::debug::SetDumpWithoutCrashingFunction(&DumpProcess); | |
| 884 #if defined(ADDRESS_SANITIZER) | |
| 885 // Register the callback for AddressSanitizer error reporting. | |
| 886 __asan_set_error_report_callback(AsanLinuxBreakpadCallback); | |
| 887 #endif | |
| 888 } | |
| 889 | |
| 890 } // namespace | |
| 891 | |
| 892 void LoadDataFromFD(google_breakpad::PageAllocator& allocator, | |
| 893 int fd, bool close_fd, uint8_t** file_data, size_t* size) { | |
| 894 STAT_STRUCT st; | |
| 895 if (FSTAT_FUNC(fd, &st) != 0) { | |
| 896 static const char msg[] = "Cannot upload crash dump: stat failed\n"; | |
| 897 WriteLog(msg, sizeof(msg) - 1); | |
| 898 if (close_fd) | |
| 899 IGNORE_RET(sys_close(fd)); | |
| 900 return; | |
| 901 } | |
| 902 | |
| 903 *file_data = reinterpret_cast<uint8_t*>(allocator.Alloc(st.st_size)); | |
| 904 if (!(*file_data)) { | |
| 905 static const char msg[] = "Cannot upload crash dump: cannot alloc\n"; | |
| 906 WriteLog(msg, sizeof(msg) - 1); | |
| 907 if (close_fd) | |
| 908 IGNORE_RET(sys_close(fd)); | |
| 909 return; | |
| 910 } | |
| 911 my_memset(*file_data, 0xf, st.st_size); | |
| 912 | |
| 913 *size = st.st_size; | |
| 914 int byte_read = sys_read(fd, *file_data, *size); | |
| 915 if (byte_read == -1) { | |
| 916 static const char msg[] = "Cannot upload crash dump: read failed\n"; | |
| 917 WriteLog(msg, sizeof(msg) - 1); | |
| 918 if (close_fd) | |
| 919 IGNORE_RET(sys_close(fd)); | |
| 920 return; | |
| 921 } | |
| 922 | |
| 923 if (close_fd) | |
| 924 IGNORE_RET(sys_close(fd)); | |
| 925 } | |
| 926 | |
| 927 void LoadDataFromFile(google_breakpad::PageAllocator& allocator, | |
| 928 const char* filename, | |
| 929 int* fd, uint8_t** file_data, size_t* size) { | |
| 930 // WARNING: this code runs in a compromised context. It may not call into | |
| 931 // libc nor allocate memory normally. | |
| 932 *fd = sys_open(filename, O_RDONLY, 0); | |
| 933 *size = 0; | |
| 934 | |
| 935 if (*fd < 0) { | |
| 936 static const char msg[] = "Cannot upload crash dump: failed to open\n"; | |
| 937 WriteLog(msg, sizeof(msg) - 1); | |
| 938 return; | |
| 939 } | |
| 940 | |
| 941 LoadDataFromFD(allocator, *fd, true, file_data, size); | |
| 942 } | |
| 943 | |
| 944 // Spawn the appropriate upload process for the current OS: | |
| 945 // - generic Linux invokes wget. | |
| 946 // - ChromeOS invokes crash_reporter. | |
| 947 // |dumpfile| is the path to the dump data file. | |
| 948 // |mime_boundary| is only used on Linux. | |
| 949 // |exe_buf| is only used on CrOS and is the crashing process' name. | |
| 950 void ExecUploadProcessOrTerminate(const BreakpadInfo& info, | |
| 951 const char* dumpfile, | |
| 952 const char* mime_boundary, | |
| 953 const char* exe_buf, | |
| 954 google_breakpad::PageAllocator* allocator) { | |
| 955 #if defined(OS_CHROMEOS) | |
| 956 // CrOS uses crash_reporter instead of wget to report crashes, | |
| 957 // it needs to know where the crash dump lives and the pid and uid of the | |
| 958 // crashing process. | |
| 959 static const char kCrashReporterBinary[] = "/sbin/crash_reporter"; | |
| 960 | |
| 961 char pid_buf[kUint64StringSize]; | |
| 962 uint64_t pid_str_length = my_uint64_len(info.pid); | |
| 963 my_uint64tos(pid_buf, info.pid, pid_str_length); | |
| 964 pid_buf[pid_str_length] = '\0'; | |
| 965 | |
| 966 char uid_buf[kUint64StringSize]; | |
| 967 uid_t uid = geteuid(); | |
| 968 uint64_t uid_str_length = my_uint64_len(uid); | |
| 969 my_uint64tos(uid_buf, uid, uid_str_length); | |
| 970 uid_buf[uid_str_length] = '\0'; | |
| 971 const char* args[] = { | |
| 972 kCrashReporterBinary, | |
| 973 "--chrome", | |
| 974 dumpfile, | |
| 975 "--pid", | |
| 976 pid_buf, | |
| 977 "--uid", | |
| 978 uid_buf, | |
| 979 "--exe", | |
| 980 exe_buf, | |
| 981 NULL, | |
| 982 }; | |
| 983 static const char msg[] = "Cannot upload crash dump: cannot exec " | |
| 984 "/sbin/crash_reporter\n"; | |
| 985 #else | |
| 986 // The --header argument to wget looks like: | |
| 987 // --header=Content-Type: multipart/form-data; boundary=XYZ | |
| 988 // where the boundary has two fewer leading '-' chars | |
| 989 static const char header_msg[] = | |
| 990 "--header=Content-Type: multipart/form-data; boundary="; | |
| 991 char* const header = reinterpret_cast<char*>(allocator->Alloc( | |
| 992 sizeof(header_msg) - 1 + strlen(mime_boundary) - 2 + 1)); | |
| 993 memcpy(header, header_msg, sizeof(header_msg) - 1); | |
| 994 memcpy(header + sizeof(header_msg) - 1, mime_boundary + 2, | |
| 995 strlen(mime_boundary) - 2); | |
| 996 // We grab the NUL byte from the end of |mime_boundary|. | |
| 997 | |
| 998 // The --post-file argument to wget looks like: | |
| 999 // --post-file=/tmp/... | |
| 1000 static const char post_file_msg[] = "--post-file="; | |
| 1001 char* const post_file = reinterpret_cast<char*>(allocator->Alloc( | |
| 1002 sizeof(post_file_msg) - 1 + strlen(dumpfile) + 1)); | |
| 1003 memcpy(post_file, post_file_msg, sizeof(post_file_msg) - 1); | |
| 1004 memcpy(post_file + sizeof(post_file_msg) - 1, dumpfile, strlen(dumpfile)); | |
| 1005 | |
| 1006 static const char kWgetBinary[] = "/usr/bin/wget"; | |
| 1007 const char* args[] = { | |
| 1008 kWgetBinary, | |
| 1009 header, | |
| 1010 post_file, | |
| 1011 kUploadURL, | |
| 1012 "--timeout=10", // Set a timeout so we don't hang forever. | |
| 1013 "--tries=1", // Don't retry if the upload fails. | |
| 1014 "-O", // output reply to fd 3 | |
| 1015 "/dev/fd/3", | |
| 1016 NULL, | |
| 1017 }; | |
| 1018 static const char msg[] = "Cannot upload crash dump: cannot exec " | |
| 1019 "/usr/bin/wget\n"; | |
| 1020 #endif | |
| 1021 execve(args[0], const_cast<char**>(args), environ); | |
| 1022 WriteLog(msg, sizeof(msg) - 1); | |
| 1023 sys__exit(1); | |
| 1024 } | |
| 1025 | |
| 1026 // Runs in the helper process to wait for the upload process running | |
| 1027 // ExecUploadProcessOrTerminate() to finish. Returns the number of bytes written | |
| 1028 // to |fd| and save the written contents to |buf|. | |
| 1029 // |buf| needs to be big enough to hold |bytes_to_read| + 1 characters. | |
| 1030 size_t WaitForCrashReportUploadProcess(int fd, size_t bytes_to_read, | |
| 1031 char* buf) { | |
| 1032 size_t bytes_read = 0; | |
| 1033 | |
| 1034 // Upload should finish in about 10 seconds. Add a few more 500 ms | |
| 1035 // internals to account for process startup time. | |
| 1036 for (size_t wait_count = 0; wait_count < 24; ++wait_count) { | |
| 1037 struct kernel_pollfd poll_fd; | |
| 1038 poll_fd.fd = fd; | |
| 1039 poll_fd.events = POLLIN | POLLPRI | POLLERR; | |
| 1040 int ret = sys_poll(&poll_fd, 1, 500); | |
| 1041 if (ret < 0) { | |
| 1042 // Error | |
| 1043 break; | |
| 1044 } else if (ret > 0) { | |
| 1045 // There is data to read. | |
| 1046 ssize_t len = HANDLE_EINTR( | |
| 1047 sys_read(fd, buf + bytes_read, bytes_to_read - bytes_read)); | |
| 1048 if (len < 0) | |
| 1049 break; | |
| 1050 bytes_read += len; | |
| 1051 if (bytes_read == bytes_to_read) | |
| 1052 break; | |
| 1053 } | |
| 1054 // |ret| == 0 -> timed out, continue waiting. | |
| 1055 // or |bytes_read| < |bytes_to_read| still, keep reading. | |
| 1056 } | |
| 1057 buf[bytes_to_read] = 0; // Always NUL terminate the buffer. | |
| 1058 return bytes_read; | |
| 1059 } | |
| 1060 | |
| 1061 // |buf| should be |expected_len| + 1 characters in size and NULL terminated. | |
| 1062 bool IsValidCrashReportId(const char* buf, size_t bytes_read, | |
| 1063 size_t expected_len) { | |
| 1064 if (bytes_read != expected_len) | |
| 1065 return false; | |
| 1066 #if defined(OS_CHROMEOS) | |
| 1067 return my_strcmp(buf, "_sys_cr_finished") == 0; | |
| 1068 #else | |
| 1069 for (size_t i = 0; i < bytes_read; ++i) { | |
| 1070 if (!my_isxdigit(buf[i])) | |
| 1071 return false; | |
| 1072 } | |
| 1073 return true; | |
| 1074 #endif | |
| 1075 } | |
| 1076 | |
| 1077 // |buf| should be |expected_len| + 1 characters in size and NULL terminated. | |
| 1078 void HandleCrashReportId(const char* buf, size_t bytes_read, | |
| 1079 size_t expected_len) { | |
| 1080 WriteNewline(); | |
| 1081 if (!IsValidCrashReportId(buf, bytes_read, expected_len)) { | |
| 1082 #if defined(OS_CHROMEOS) | |
| 1083 static const char msg[] = "Crash_reporter failed to process crash report"; | |
| 1084 #else | |
| 1085 static const char msg[] = "Failed to get crash dump id."; | |
| 1086 #endif | |
| 1087 WriteLog(msg, sizeof(msg) - 1); | |
| 1088 WriteNewline(); | |
| 1089 return; | |
| 1090 } | |
| 1091 | |
| 1092 #if defined(OS_CHROMEOS) | |
| 1093 static const char msg[] = "Crash dump received by crash_reporter\n"; | |
| 1094 WriteLog(msg, sizeof(msg) - 1); | |
| 1095 #else | |
| 1096 // Write crash dump id to stderr. | |
| 1097 static const char msg[] = "Crash dump id: "; | |
| 1098 WriteLog(msg, sizeof(msg) - 1); | |
| 1099 WriteLog(buf, my_strlen(buf)); | |
| 1100 WriteNewline(); | |
| 1101 | |
| 1102 // Write crash dump id to crash log as: seconds_since_epoch,crash_id | |
| 1103 struct kernel_timeval tv; | |
| 1104 if (g_crash_log_path && !sys_gettimeofday(&tv, NULL)) { | |
| 1105 uint64_t time = kernel_timeval_to_ms(&tv) / 1000; | |
| 1106 char time_str[kUint64StringSize]; | |
| 1107 const unsigned time_len = my_uint64_len(time); | |
| 1108 my_uint64tos(time_str, time, time_len); | |
| 1109 | |
| 1110 const int kLogOpenFlags = O_CREAT | O_WRONLY | O_APPEND | O_CLOEXEC; | |
| 1111 int log_fd = sys_open(g_crash_log_path, kLogOpenFlags, 0600); | |
| 1112 if (log_fd > 0) { | |
| 1113 sys_write(log_fd, time_str, time_len); | |
| 1114 sys_write(log_fd, ",", 1); | |
| 1115 sys_write(log_fd, buf, my_strlen(buf)); | |
| 1116 sys_write(log_fd, "\n", 1); | |
| 1117 IGNORE_RET(sys_close(log_fd)); | |
| 1118 } | |
| 1119 } | |
| 1120 #endif | |
| 1121 } | |
| 1122 | |
| 1123 #if defined(OS_CHROMEOS) | |
| 1124 const char* GetCrashingProcessName(const BreakpadInfo& info, | |
| 1125 google_breakpad::PageAllocator* allocator) { | |
| 1126 // Symlink to process binary is at /proc/###/exe. | |
| 1127 char linkpath[kUint64StringSize + sizeof("/proc/") + sizeof("/exe")] = | |
| 1128 "/proc/"; | |
| 1129 uint64_t pid_value_len = my_uint64_len(info.pid); | |
| 1130 my_uint64tos(linkpath + sizeof("/proc/") - 1, info.pid, pid_value_len); | |
| 1131 linkpath[sizeof("/proc/") - 1 + pid_value_len] = '\0'; | |
| 1132 my_strlcat(linkpath, "/exe", sizeof(linkpath)); | |
| 1133 | |
| 1134 const int kMaxSize = 4096; | |
| 1135 char* link = reinterpret_cast<char*>(allocator->Alloc(kMaxSize)); | |
| 1136 if (link) { | |
| 1137 ssize_t size = readlink(linkpath, link, kMaxSize); | |
| 1138 if (size < kMaxSize && size > 0) { | |
| 1139 // readlink(2) doesn't add a terminating NUL, so do it now. | |
| 1140 link[size] = '\0'; | |
| 1141 | |
| 1142 const char* name = my_strrchr(link, '/'); | |
| 1143 if (name) | |
| 1144 return name + 1; | |
| 1145 return link; | |
| 1146 } | |
| 1147 } | |
| 1148 // Either way too long, or a read error. | |
| 1149 return "chrome-crash-unknown-process"; | |
| 1150 } | |
| 1151 #endif | |
| 1152 | |
| 1153 void HandleCrashDump(const BreakpadInfo& info) { | |
| 1154 int dumpfd; | |
| 1155 bool keep_fd = false; | |
| 1156 size_t dump_size; | |
| 1157 uint8_t* dump_data; | |
| 1158 google_breakpad::PageAllocator allocator; | |
| 1159 const char* exe_buf = NULL; | |
| 1160 | |
| 1161 #if defined(OS_CHROMEOS) | |
| 1162 // Grab the crashing process' name now, when it should still be available. | |
| 1163 // If we try to do this later in our grandchild the crashing process has | |
| 1164 // already terminated. | |
| 1165 exe_buf = GetCrashingProcessName(info, &allocator); | |
| 1166 #endif | |
| 1167 | |
| 1168 if (info.fd != -1) { | |
| 1169 // Dump is provided with an open FD. | |
| 1170 keep_fd = true; | |
| 1171 dumpfd = info.fd; | |
| 1172 | |
| 1173 // The FD is pointing to the end of the file. | |
| 1174 // Rewind, we'll read the data next. | |
| 1175 if (lseek(dumpfd, 0, SEEK_SET) == -1) { | |
| 1176 static const char msg[] = "Cannot upload crash dump: failed to " | |
| 1177 "reposition minidump FD\n"; | |
| 1178 WriteLog(msg, sizeof(msg) - 1); | |
| 1179 IGNORE_RET(sys_close(dumpfd)); | |
| 1180 return; | |
| 1181 } | |
| 1182 LoadDataFromFD(allocator, info.fd, false, &dump_data, &dump_size); | |
| 1183 } else { | |
| 1184 // Dump is provided with a path. | |
| 1185 keep_fd = false; | |
| 1186 LoadDataFromFile(allocator, info.filename, &dumpfd, &dump_data, &dump_size); | |
| 1187 } | |
| 1188 | |
| 1189 // TODO(jcivelli): make log work when using FDs. | |
| 1190 #if defined(ADDRESS_SANITIZER) | |
| 1191 int logfd; | |
| 1192 size_t log_size; | |
| 1193 uint8_t* log_data; | |
| 1194 // Load the AddressSanitizer log into log_data. | |
| 1195 LoadDataFromFile(allocator, info.log_filename, &logfd, &log_data, &log_size); | |
| 1196 #endif | |
| 1197 | |
| 1198 // We need to build a MIME block for uploading to the server. Since we are | |
| 1199 // going to fork and run wget, it needs to be written to a temp file. | |
| 1200 const int ufd = sys_open("/dev/urandom", O_RDONLY, 0); | |
| 1201 if (ufd < 0) { | |
| 1202 static const char msg[] = "Cannot upload crash dump because /dev/urandom" | |
| 1203 " is missing\n"; | |
| 1204 WriteLog(msg, sizeof(msg) - 1); | |
| 1205 return; | |
| 1206 } | |
| 1207 | |
| 1208 static const char temp_file_template[] = | |
| 1209 "/tmp/chromium-upload-XXXXXXXXXXXXXXXX"; | |
| 1210 char temp_file[sizeof(temp_file_template)]; | |
| 1211 int temp_file_fd = -1; | |
| 1212 if (keep_fd) { | |
| 1213 temp_file_fd = dumpfd; | |
| 1214 // Rewind the destination, we are going to overwrite it. | |
| 1215 if (lseek(dumpfd, 0, SEEK_SET) == -1) { | |
| 1216 static const char msg[] = "Cannot upload crash dump: failed to " | |
| 1217 "reposition minidump FD (2)\n"; | |
| 1218 WriteLog(msg, sizeof(msg) - 1); | |
| 1219 IGNORE_RET(sys_close(dumpfd)); | |
| 1220 return; | |
| 1221 } | |
| 1222 } else { | |
| 1223 if (info.upload) { | |
| 1224 memcpy(temp_file, temp_file_template, sizeof(temp_file_template)); | |
| 1225 | |
| 1226 for (unsigned i = 0; i < 10; ++i) { | |
| 1227 uint64_t t; | |
| 1228 sys_read(ufd, &t, sizeof(t)); | |
| 1229 write_uint64_hex(temp_file + sizeof(temp_file) - (16 + 1), t); | |
| 1230 | |
| 1231 temp_file_fd = sys_open(temp_file, O_WRONLY | O_CREAT | O_EXCL, 0600); | |
| 1232 if (temp_file_fd >= 0) | |
| 1233 break; | |
| 1234 } | |
| 1235 | |
| 1236 if (temp_file_fd < 0) { | |
| 1237 static const char msg[] = "Failed to create temporary file in /tmp: " | |
| 1238 "cannot upload crash dump\n"; | |
| 1239 WriteLog(msg, sizeof(msg) - 1); | |
| 1240 IGNORE_RET(sys_close(ufd)); | |
| 1241 return; | |
| 1242 } | |
| 1243 } else { | |
| 1244 temp_file_fd = sys_open(info.filename, O_WRONLY, 0600); | |
| 1245 if (temp_file_fd < 0) { | |
| 1246 static const char msg[] = "Failed to save crash dump: failed to open\n"; | |
| 1247 WriteLog(msg, sizeof(msg) - 1); | |
| 1248 IGNORE_RET(sys_close(ufd)); | |
| 1249 return; | |
| 1250 } | |
| 1251 } | |
| 1252 } | |
| 1253 | |
| 1254 // The MIME boundary is 28 hyphens, followed by a 64-bit nonce and a NUL. | |
| 1255 char mime_boundary[28 + 16 + 1]; | |
| 1256 my_memset(mime_boundary, '-', 28); | |
| 1257 uint64_t boundary_rand; | |
| 1258 sys_read(ufd, &boundary_rand, sizeof(boundary_rand)); | |
| 1259 write_uint64_hex(mime_boundary + 28, boundary_rand); | |
| 1260 mime_boundary[28 + 16] = 0; | |
| 1261 IGNORE_RET(sys_close(ufd)); | |
| 1262 | |
| 1263 // The MIME block looks like this: | |
| 1264 // BOUNDARY \r\n | |
| 1265 // Content-Disposition: form-data; name="prod" \r\n \r\n | |
| 1266 // Chrome_Linux \r\n | |
| 1267 // BOUNDARY \r\n | |
| 1268 // Content-Disposition: form-data; name="ver" \r\n \r\n | |
| 1269 // 1.2.3.4 \r\n | |
| 1270 // BOUNDARY \r\n | |
| 1271 // | |
| 1272 // zero or one: | |
| 1273 // Content-Disposition: form-data; name="ptime" \r\n \r\n | |
| 1274 // abcdef \r\n | |
| 1275 // BOUNDARY \r\n | |
| 1276 // | |
| 1277 // zero or one: | |
| 1278 // Content-Disposition: form-data; name="ptype" \r\n \r\n | |
| 1279 // abcdef \r\n | |
| 1280 // BOUNDARY \r\n | |
| 1281 // | |
| 1282 // zero or one: | |
| 1283 // Content-Disposition: form-data; name="lsb-release" \r\n \r\n | |
| 1284 // abcdef \r\n | |
| 1285 // BOUNDARY \r\n | |
| 1286 // | |
| 1287 // zero or one: | |
| 1288 // Content-Disposition: form-data; name="oom-size" \r\n \r\n | |
| 1289 // 1234567890 \r\n | |
| 1290 // BOUNDARY \r\n | |
| 1291 // | |
| 1292 // zero or more (up to CrashKeyStorage::num_entries = 64): | |
| 1293 // Content-Disposition: form-data; name=crash-key-name \r\n | |
| 1294 // crash-key-value \r\n | |
| 1295 // BOUNDARY \r\n | |
| 1296 // | |
| 1297 // Content-Disposition: form-data; name="dump"; filename="dump" \r\n | |
| 1298 // Content-Type: application/octet-stream \r\n \r\n | |
| 1299 // <dump contents> | |
| 1300 // \r\n BOUNDARY -- \r\n | |
| 1301 | |
| 1302 #if defined(OS_CHROMEOS) | |
| 1303 CrashReporterWriter writer(temp_file_fd); | |
| 1304 #else | |
| 1305 MimeWriter writer(temp_file_fd, mime_boundary); | |
| 1306 #endif | |
| 1307 { | |
| 1308 // TODO(thestig) Do not use this inside a compromised context. | |
| 1309 std::string product_name; | |
| 1310 std::string version; | |
| 1311 | |
| 1312 GetBreakpadClient()->GetProductNameAndVersion(&product_name, &version); | |
| 1313 | |
| 1314 writer.AddBoundary(); | |
| 1315 writer.AddPairString("prod", product_name.c_str()); | |
| 1316 writer.AddBoundary(); | |
| 1317 writer.AddPairString("ver", version.c_str()); | |
| 1318 writer.AddBoundary(); | |
| 1319 if (info.pid > 0) { | |
| 1320 char pid_value_buf[kUint64StringSize]; | |
| 1321 uint64_t pid_value_len = my_uint64_len(info.pid); | |
| 1322 my_uint64tos(pid_value_buf, info.pid, pid_value_len); | |
| 1323 static const char pid_key_name[] = "pid"; | |
| 1324 writer.AddPairData(pid_key_name, sizeof(pid_key_name) - 1, | |
| 1325 pid_value_buf, pid_value_len); | |
| 1326 writer.AddBoundary(); | |
| 1327 } | |
| 1328 #if defined(OS_ANDROID) | |
| 1329 // Addtional MIME blocks are added for logging on Android devices. | |
| 1330 static const char android_build_id[] = "android_build_id"; | |
| 1331 static const char android_build_fp[] = "android_build_fp"; | |
| 1332 static const char device[] = "device"; | |
| 1333 static const char model[] = "model"; | |
| 1334 static const char brand[] = "brand"; | |
| 1335 static const char exception_info[] = "exception_info"; | |
| 1336 | |
| 1337 base::android::BuildInfo* android_build_info = | |
| 1338 base::android::BuildInfo::GetInstance(); | |
| 1339 writer.AddPairString( | |
| 1340 android_build_id, android_build_info->android_build_id()); | |
| 1341 writer.AddBoundary(); | |
| 1342 writer.AddPairString( | |
| 1343 android_build_fp, android_build_info->android_build_fp()); | |
| 1344 writer.AddBoundary(); | |
| 1345 writer.AddPairString(device, android_build_info->device()); | |
| 1346 writer.AddBoundary(); | |
| 1347 writer.AddPairString(model, android_build_info->model()); | |
| 1348 writer.AddBoundary(); | |
| 1349 writer.AddPairString(brand, android_build_info->brand()); | |
| 1350 writer.AddBoundary(); | |
| 1351 if (android_build_info->java_exception_info() != NULL) { | |
| 1352 writer.AddPairString(exception_info, | |
| 1353 android_build_info->java_exception_info()); | |
| 1354 writer.AddBoundary(); | |
| 1355 } | |
| 1356 #endif | |
| 1357 writer.Flush(); | |
| 1358 } | |
| 1359 | |
| 1360 if (info.process_start_time > 0) { | |
| 1361 struct kernel_timeval tv; | |
| 1362 if (!sys_gettimeofday(&tv, NULL)) { | |
| 1363 uint64_t time = kernel_timeval_to_ms(&tv); | |
| 1364 if (time > info.process_start_time) { | |
| 1365 time -= info.process_start_time; | |
| 1366 char time_str[kUint64StringSize]; | |
| 1367 const unsigned time_len = my_uint64_len(time); | |
| 1368 my_uint64tos(time_str, time, time_len); | |
| 1369 | |
| 1370 static const char process_time_msg[] = "ptime"; | |
| 1371 writer.AddPairData(process_time_msg, sizeof(process_time_msg) - 1, | |
| 1372 time_str, time_len); | |
| 1373 writer.AddBoundary(); | |
| 1374 writer.Flush(); | |
| 1375 } | |
| 1376 } | |
| 1377 } | |
| 1378 | |
| 1379 if (info.process_type_length) { | |
| 1380 writer.AddPairString("ptype", info.process_type); | |
| 1381 writer.AddBoundary(); | |
| 1382 writer.Flush(); | |
| 1383 } | |
| 1384 | |
| 1385 if (info.distro_length) { | |
| 1386 static const char distro_msg[] = "lsb-release"; | |
| 1387 writer.AddPairString(distro_msg, info.distro); | |
| 1388 writer.AddBoundary(); | |
| 1389 writer.Flush(); | |
| 1390 } | |
| 1391 | |
| 1392 if (info.oom_size) { | |
| 1393 char oom_size_str[kUint64StringSize]; | |
| 1394 const unsigned oom_size_len = my_uint64_len(info.oom_size); | |
| 1395 my_uint64tos(oom_size_str, info.oom_size, oom_size_len); | |
| 1396 static const char oom_size_msg[] = "oom-size"; | |
| 1397 writer.AddPairData(oom_size_msg, sizeof(oom_size_msg) - 1, | |
| 1398 oom_size_str, oom_size_len); | |
| 1399 writer.AddBoundary(); | |
| 1400 writer.Flush(); | |
| 1401 } | |
| 1402 | |
| 1403 if (info.crash_keys) { | |
| 1404 CrashKeyStorage::Iterator crash_key_iterator(*info.crash_keys); | |
| 1405 const CrashKeyStorage::Entry* entry; | |
| 1406 while ((entry = crash_key_iterator.Next())) { | |
| 1407 writer.AddPairString(entry->key, entry->value); | |
| 1408 writer.AddBoundary(); | |
| 1409 writer.Flush(); | |
| 1410 } | |
| 1411 } | |
| 1412 | |
| 1413 writer.AddFileContents(g_dump_msg, dump_data, dump_size); | |
| 1414 #if defined(ADDRESS_SANITIZER) | |
| 1415 // Append a multipart boundary and the contents of the AddressSanitizer log. | |
| 1416 writer.AddBoundary(); | |
| 1417 writer.AddFileContents(g_log_msg, log_data, log_size); | |
| 1418 #endif | |
| 1419 writer.AddEnd(); | |
| 1420 writer.Flush(); | |
| 1421 | |
| 1422 IGNORE_RET(sys_close(temp_file_fd)); | |
| 1423 | |
| 1424 #if defined(OS_ANDROID) | |
| 1425 if (info.filename) { | |
| 1426 int filename_length = my_strlen(info.filename); | |
| 1427 | |
| 1428 // If this was a file, we need to copy it to the right place and use the | |
| 1429 // right file name so it gets uploaded by the browser. | |
| 1430 const char msg[] = "Output crash dump file:"; | |
| 1431 WriteLog(msg, sizeof(msg) - 1); | |
| 1432 WriteLog(info.filename, filename_length - 1); | |
| 1433 | |
| 1434 char pid_buf[kUint64StringSize]; | |
| 1435 uint64_t pid_str_length = my_uint64_len(info.pid); | |
| 1436 my_uint64tos(pid_buf, info.pid, pid_str_length); | |
| 1437 | |
| 1438 // -1 because we won't need the null terminator on the original filename. | |
| 1439 unsigned done_filename_len = filename_length - 1 + pid_str_length; | |
| 1440 char* done_filename = reinterpret_cast<char*>( | |
| 1441 allocator.Alloc(done_filename_len)); | |
| 1442 // Rename the file such that the pid is the suffix in order signal to other | |
| 1443 // processes that the minidump is complete. The advantage of using the pid | |
| 1444 // as the suffix is that it is trivial to associate the minidump with the | |
| 1445 // crashed process. | |
| 1446 // Finally, note strncpy prevents null terminators from | |
| 1447 // being copied. Pad the rest with 0's. | |
| 1448 my_strncpy(done_filename, info.filename, done_filename_len); | |
| 1449 // Append the suffix a null terminator should be added. | |
| 1450 my_strncat(done_filename, pid_buf, pid_str_length); | |
| 1451 // Rename the minidump file to signal that it is complete. | |
| 1452 if (rename(info.filename, done_filename)) { | |
| 1453 const char failed_msg[] = "Failed to rename:"; | |
| 1454 WriteLog(failed_msg, sizeof(failed_msg) - 1); | |
| 1455 WriteLog(info.filename, filename_length - 1); | |
| 1456 const char to_msg[] = "to"; | |
| 1457 WriteLog(to_msg, sizeof(to_msg) - 1); | |
| 1458 WriteLog(done_filename, done_filename_len - 1); | |
| 1459 } | |
| 1460 } | |
| 1461 #endif | |
| 1462 | |
| 1463 if (!info.upload) | |
| 1464 return; | |
| 1465 | |
| 1466 const pid_t child = sys_fork(); | |
| 1467 if (!child) { | |
| 1468 // Spawned helper process. | |
| 1469 // | |
| 1470 // This code is called both when a browser is crashing (in which case, | |
| 1471 // nothing really matters any more) and when a renderer/plugin crashes, in | |
| 1472 // which case we need to continue. | |
| 1473 // | |
| 1474 // Since we are a multithreaded app, if we were just to fork(), we might | |
| 1475 // grab file descriptors which have just been created in another thread and | |
| 1476 // hold them open for too long. | |
| 1477 // | |
| 1478 // Thus, we have to loop and try and close everything. | |
| 1479 const int fd = sys_open("/proc/self/fd", O_DIRECTORY | O_RDONLY, 0); | |
| 1480 if (fd < 0) { | |
| 1481 for (unsigned i = 3; i < 8192; ++i) | |
| 1482 IGNORE_RET(sys_close(i)); | |
| 1483 } else { | |
| 1484 google_breakpad::DirectoryReader reader(fd); | |
| 1485 const char* name; | |
| 1486 while (reader.GetNextEntry(&name)) { | |
| 1487 int i; | |
| 1488 if (my_strtoui(&i, name) && i > 2 && i != fd) | |
| 1489 IGNORE_RET(sys_close(i)); | |
| 1490 reader.PopEntry(); | |
| 1491 } | |
| 1492 | |
| 1493 IGNORE_RET(sys_close(fd)); | |
| 1494 } | |
| 1495 | |
| 1496 IGNORE_RET(sys_setsid()); | |
| 1497 | |
| 1498 // Leave one end of a pipe in the upload process and watch for it getting | |
| 1499 // closed by the upload process exiting. | |
| 1500 int fds[2]; | |
| 1501 if (sys_pipe(fds) >= 0) { | |
| 1502 const pid_t upload_child = sys_fork(); | |
| 1503 if (!upload_child) { | |
| 1504 // Upload process. | |
| 1505 IGNORE_RET(sys_close(fds[0])); | |
| 1506 IGNORE_RET(sys_dup2(fds[1], 3)); | |
| 1507 ExecUploadProcessOrTerminate(info, temp_file, mime_boundary, exe_buf, | |
| 1508 &allocator); | |
| 1509 } | |
| 1510 | |
| 1511 // Helper process. | |
| 1512 if (upload_child > 0) { | |
| 1513 IGNORE_RET(sys_close(fds[1])); | |
| 1514 | |
| 1515 const size_t kCrashIdLength = 16; | |
| 1516 char id_buf[kCrashIdLength + 1]; | |
| 1517 size_t bytes_read = | |
| 1518 WaitForCrashReportUploadProcess(fds[0], kCrashIdLength, id_buf); | |
| 1519 HandleCrashReportId(id_buf, bytes_read, kCrashIdLength); | |
| 1520 | |
| 1521 if (sys_waitpid(upload_child, NULL, WNOHANG) == 0) { | |
| 1522 // Upload process is still around, kill it. | |
| 1523 sys_kill(upload_child, SIGKILL); | |
| 1524 } | |
| 1525 } | |
| 1526 } | |
| 1527 | |
| 1528 // Helper process. | |
| 1529 IGNORE_RET(sys_unlink(info.filename)); | |
| 1530 #if defined(ADDRESS_SANITIZER) | |
| 1531 IGNORE_RET(sys_unlink(info.log_filename)); | |
| 1532 #endif | |
| 1533 IGNORE_RET(sys_unlink(temp_file)); | |
| 1534 sys__exit(0); | |
| 1535 } | |
| 1536 | |
| 1537 // Main browser process. | |
| 1538 if (child <= 0) | |
| 1539 return; | |
| 1540 (void) HANDLE_EINTR(sys_waitpid(child, NULL, 0)); | |
| 1541 } | |
| 1542 | |
| 1543 void InitCrashReporter(const std::string& process_type) { | |
| 1544 #if defined(OS_ANDROID) | |
| 1545 // This will guarantee that the BuildInfo has been initialized and subsequent | |
| 1546 // calls will not require memory allocation. | |
| 1547 base::android::BuildInfo::GetInstance(); | |
| 1548 #endif | |
| 1549 // Determine the process type and take appropriate action. | |
| 1550 const CommandLine& parsed_command_line = *CommandLine::ForCurrentProcess(); | |
| 1551 if (parsed_command_line.HasSwitch(switches::kDisableBreakpad)) | |
| 1552 return; | |
| 1553 | |
| 1554 if (process_type.empty()) { | |
| 1555 bool enable_breakpad = GetBreakpadClient()->GetCollectStatsConsent() || | |
| 1556 GetBreakpadClient()->IsRunningUnattended(); | |
| 1557 enable_breakpad &= | |
| 1558 !parsed_command_line.HasSwitch(switches::kDisableBreakpad); | |
| 1559 if (!enable_breakpad) { | |
| 1560 enable_breakpad = parsed_command_line.HasSwitch( | |
| 1561 switches::kEnableCrashReporterForTesting); | |
| 1562 } | |
| 1563 if (!enable_breakpad) { | |
| 1564 VLOG(1) << "Breakpad disabled"; | |
| 1565 return; | |
| 1566 } | |
| 1567 | |
| 1568 InitCrashKeys(); | |
| 1569 EnableCrashDumping(GetBreakpadClient()->IsRunningUnattended()); | |
| 1570 } else if (GetBreakpadClient()->EnableBreakpadForProcess(process_type)) { | |
| 1571 #if defined(OS_ANDROID) | |
| 1572 NOTREACHED() << "Breakpad initialized with InitCrashReporter() instead of " | |
| 1573 "InitNonBrowserCrashReporter in " << process_type << " process."; | |
| 1574 return; | |
| 1575 #else | |
| 1576 // We might be chrooted in a zygote or renderer process so we cannot call | |
| 1577 // GetCollectStatsConsent because that needs access the the user's home | |
| 1578 // dir. Instead, we set a command line flag for these processes. | |
| 1579 // Even though plugins are not chrooted, we share the same code path for | |
| 1580 // simplicity. | |
| 1581 if (!parsed_command_line.HasSwitch(switches::kEnableCrashReporter)) | |
| 1582 return; | |
| 1583 InitCrashKeys(); | |
| 1584 SetClientIdFromCommandLine(parsed_command_line); | |
| 1585 EnableNonBrowserCrashDumping(); | |
| 1586 VLOG(1) << "Non Browser crash dumping enabled for: " << process_type; | |
| 1587 #endif // #if defined(OS_ANDROID) | |
| 1588 } | |
| 1589 | |
| 1590 PostEnableBreakpadInitialization(); | |
| 1591 } | |
| 1592 | |
| 1593 #if defined(OS_ANDROID) | |
| 1594 void InitNonBrowserCrashReporterForAndroid(const std::string& process_type) { | |
| 1595 const CommandLine* command_line = CommandLine::ForCurrentProcess(); | |
| 1596 if (command_line->HasSwitch(switches::kEnableCrashReporter)) { | |
| 1597 // On Android we need to provide a FD to the file where the minidump is | |
| 1598 // generated as the renderer and browser run with different UIDs | |
| 1599 // (preventing the browser from inspecting the renderer process). | |
| 1600 int minidump_fd = base::GlobalDescriptors::GetInstance()->MaybeGet( | |
| 1601 GetBreakpadClient()->GetAndroidMinidumpDescriptor()); | |
| 1602 if (minidump_fd < 0) { | |
| 1603 NOTREACHED() << "Could not find minidump FD, crash reporting disabled."; | |
| 1604 } else { | |
| 1605 EnableNonBrowserCrashDumping(process_type, minidump_fd); | |
| 1606 } | |
| 1607 } | |
| 1608 } | |
| 1609 #endif // OS_ANDROID | |
| 1610 | |
| 1611 bool IsCrashReporterEnabled() { | |
| 1612 return g_is_crash_reporter_enabled; | |
| 1613 } | |
| 1614 | |
| 1615 } // namespace breakpad | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 485893007:
Rename components/breakpad to components/crash. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src