| File: | root/firefox-clang/obj-x86_64-pc-linux-gnu/toolkit/crashreporter/breakpad-client/linux/./../../../../../toolkit/crashreporter/breakpad-client/linux/crash_generation/crash_generation_server.cc |
| Warning: | line 358, column 5 Value stored to 'res' is never read |
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| 1 | // Copyright (c) 2010 Google Inc. |
| 2 | // All rights reserved. |
| 3 | // |
| 4 | // Redistribution and use in source and binary forms, with or without |
| 5 | // modification, are permitted provided that the following conditions are |
| 6 | // met: |
| 7 | // |
| 8 | // * Redistributions of source code must retain the above copyright |
| 9 | // notice, this list of conditions and the following disclaimer. |
| 10 | // * Redistributions in binary form must reproduce the above |
| 11 | // copyright notice, this list of conditions and the following disclaimer |
| 12 | // in the documentation and/or other materials provided with the |
| 13 | // distribution. |
| 14 | // * Neither the name of Google Inc. nor the names of its |
| 15 | // contributors may be used to endorse or promote products derived from |
| 16 | // this software without specific prior written permission. |
| 17 | // |
| 18 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 19 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 20 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 21 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 22 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 23 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 24 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 25 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 26 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 27 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 28 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 | |
| 30 | #include <assert.h> |
| 31 | #include <dirent.h> |
| 32 | #include <fcntl.h> |
| 33 | #include <limits.h> |
| 34 | #include <poll.h> |
| 35 | #include <stdio.h> |
| 36 | #include <stdlib.h> |
| 37 | #include <string.h> |
| 38 | #include <sys/socket.h> |
| 39 | #include <sys/stat.h> |
| 40 | #include <sys/types.h> |
| 41 | #include <unistd.h> |
| 42 | |
| 43 | #include <vector> |
| 44 | |
| 45 | #include "linux/crash_generation/crash_generation_server.h" |
| 46 | #include "linux/crash_generation/crash_generation.h" |
| 47 | #include "linux/crash_generation/client_info.h" |
| 48 | #include "linux/handler/exception_handler.h" |
| 49 | #include "linux/handler/guid_generator.h" |
| 50 | #include "linux/minidump_writer/minidump_writer.h" |
| 51 | #include "linux/log/log.h" |
| 52 | #include "common/linux/eintr_wrapper.h" |
| 53 | #include "common/linux/safe_readlink.h" |
| 54 | |
| 55 | #if defined(MOZ_OXIDIZED_BREAKPAD1) |
| 56 | # include "mozilla/toolkit/crashreporter/rust_minidump_writer_linux_ffi_generated.h" |
| 57 | #endif // defined(MOZ_OXIDIZED_BREAKPAD) |
| 58 | |
| 59 | static const char kCommandQuit = 'x'; |
| 60 | |
| 61 | namespace google_breakpad { |
| 62 | |
| 63 | using CrashReporter::UniqueFd; |
| 64 | using CrashReporter::GenerationClientAction; |
| 65 | |
| 66 | CrashGenerationServer::CrashGenerationServer( |
| 67 | const int listen_fd, |
| 68 | #if defined(MOZ_OXIDIZED_BREAKPAD1) |
| 69 | std::function<GetAuxvInfoCallback> get_auxv_info, |
| 70 | #endif // defined(MOZ_OXIDIZED_BREAKPAD) |
| 71 | std::function<OnClientDumpRequestCallback> dump_callback, |
| 72 | void* dump_context, |
| 73 | const string* dump_path) : |
| 74 | server_fd_(listen_fd), |
| 75 | #if defined(MOZ_OXIDIZED_BREAKPAD1) |
| 76 | get_auxv_info_(std::move(get_auxv_info)), |
| 77 | force_remote_executor_(getenv("MOZ_CRASHREPORTER_FORCE_REMOTE_EXECUTOR") != nullptr), |
| 78 | #endif // defined(MOZ_OXIDIZED_BREAKPAD) |
| 79 | dump_callback_(std::move(dump_callback)), |
| 80 | dump_context_(dump_context), |
| 81 | dump_dir_mutex_(PTHREAD_MUTEX_INITIALIZER{ { 0, 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, 0, { __null, __null } } }), |
| 82 | started_(false) |
| 83 | { |
| 84 | if (dump_path) |
| 85 | dump_dir_ = *dump_path; |
| 86 | else |
| 87 | dump_dir_ = "/tmp"; |
| 88 | } |
| 89 | |
| 90 | CrashGenerationServer::~CrashGenerationServer() |
| 91 | { |
| 92 | if (started_) |
| 93 | Stop(); |
| 94 | } |
| 95 | |
| 96 | bool |
| 97 | CrashGenerationServer::Start() |
| 98 | { |
| 99 | if (started_ || 0 > server_fd_) |
| 100 | return false; |
| 101 | |
| 102 | int control_pipe[2]; |
| 103 | if (pipe(control_pipe)) |
| 104 | return false; |
| 105 | |
| 106 | if (fcntl(control_pipe[0], F_SETFD2, FD_CLOEXEC1)) |
| 107 | return false; |
| 108 | if (fcntl(control_pipe[1], F_SETFD2, FD_CLOEXEC1)) |
| 109 | return false; |
| 110 | |
| 111 | if (fcntl(control_pipe[0], F_SETFL4, O_NONBLOCK04000)) |
| 112 | return false; |
| 113 | |
| 114 | control_pipe_in_ = control_pipe[0]; |
| 115 | control_pipe_out_ = control_pipe[1]; |
| 116 | |
| 117 | if (pthread_create(&thread_, nullptr, |
| 118 | [](void* context) -> void* { |
| 119 | reinterpret_cast<CrashGenerationServer*>(context)->Run(); |
| 120 | return nullptr; |
| 121 | }, this)) |
| 122 | return false; |
| 123 | |
| 124 | started_ = true; |
| 125 | return true; |
| 126 | } |
| 127 | |
| 128 | void |
| 129 | CrashGenerationServer::Stop() |
| 130 | { |
| 131 | assert(pthread_self() != thread_)(static_cast <bool> (pthread_self() != thread_) ? void ( 0) : __assert_fail ("pthread_self() != thread_", __builtin_FILE (), __builtin_LINE (), __extension__ __PRETTY_FUNCTION__)); |
| 132 | |
| 133 | if (!started_) |
| 134 | return; |
| 135 | |
| 136 | HANDLE_EINTR(write(control_pipe_out_, &kCommandQuit, 1))({ __typeof__(write(control_pipe_out_, &kCommandQuit, 1)) eintr_wrapper_result; do { eintr_wrapper_result = (write(control_pipe_out_ , &kCommandQuit, 1)); } while (eintr_wrapper_result == -1 && (*__errno_location ()) == 4); eintr_wrapper_result ; }); |
| 137 | |
| 138 | void* dummy; |
| 139 | pthread_join(thread_, &dummy); |
| 140 | |
| 141 | close(control_pipe_in_); |
| 142 | close(control_pipe_out_); |
| 143 | |
| 144 | started_ = false; |
| 145 | } |
| 146 | |
| 147 | void |
| 148 | CrashGenerationServer::SetPath(const char* dump_path) |
| 149 | { |
| 150 | pthread_mutex_lock(&dump_dir_mutex_); |
| 151 | this->dump_dir_ = string(dump_path); |
| 152 | pthread_mutex_unlock(&dump_dir_mutex_); |
| 153 | } |
| 154 | |
| 155 | //static |
| 156 | bool |
| 157 | CrashGenerationServer::CreateReportChannel(int* server_fd, int* client_fd) |
| 158 | { |
| 159 | int fds[2]; |
| 160 | |
| 161 | if (socketpair(AF_UNIX1, SOCK_SEQPACKETSOCK_SEQPACKET, 0, fds)) |
| 162 | return false; |
| 163 | |
| 164 | static const int on = 1; |
| 165 | // Enable passcred on the server end of the socket |
| 166 | if (setsockopt(fds[1], SOL_SOCKET1, SO_PASSCRED16, &on, sizeof(on))) |
| 167 | return false; |
| 168 | |
| 169 | if (fcntl(fds[1], F_SETFL4, O_NONBLOCK04000)) |
| 170 | return false; |
| 171 | |
| 172 | *client_fd = fds[0]; |
| 173 | *server_fd = fds[1]; |
| 174 | return true; |
| 175 | } |
| 176 | |
| 177 | // The following methods/functions execute on the server thread |
| 178 | |
| 179 | void |
| 180 | CrashGenerationServer::Run() |
| 181 | { |
| 182 | struct pollfd pollfds[2]; |
| 183 | memset(&pollfds, 0, sizeof(pollfds)); |
| 184 | |
| 185 | pollfds[0].fd = server_fd_; |
| 186 | pollfds[0].events = POLLIN0x001; |
| 187 | |
| 188 | pollfds[1].fd = control_pipe_in_; |
| 189 | pollfds[1].events = POLLIN0x001; |
| 190 | |
| 191 | while (true) { |
| 192 | // infinite timeout |
| 193 | int nevents = poll(pollfds, sizeof(pollfds)/sizeof(pollfds[0]), -1); |
| 194 | if (-1 == nevents) { |
| 195 | if (EINTR4 == errno(*__errno_location ())) { |
| 196 | continue; |
| 197 | } else { |
| 198 | return; |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | if (pollfds[0].revents && !ClientEvent(pollfds[0].revents)) |
| 203 | return; |
| 204 | |
| 205 | if (pollfds[1].revents && !ControlEvent(pollfds[1].revents)) |
| 206 | return; |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | static bool SendActionToClient( |
| 211 | int server_endpoint, |
| 212 | pid_t crashing_pid, |
| 213 | GenerationClientAction action |
| 214 | ); |
| 215 | |
| 216 | bool |
| 217 | CrashGenerationServer::ClientEvent(short revents) |
| 218 | { |
| 219 | if (POLLHUP0x010 & revents) |
| 220 | return false; |
| 221 | assert(POLLIN & revents)(static_cast <bool> (0x001 & revents) ? void (0) : __assert_fail ("POLLIN & revents", __builtin_FILE (), __builtin_LINE ( ), __extension__ __PRETTY_FUNCTION__)); |
| 222 | |
| 223 | // A process has crashed and has signaled us by writing a datagram |
| 224 | // to the death signal socket. The datagram contains the crash context needed |
| 225 | // for writing the minidump as well as a file descriptor and a credentials |
| 226 | // block so that they can't lie about their pid. |
| 227 | |
| 228 | // The length of the control message: |
| 229 | static const unsigned kControlMsgSize = |
| 230 | CMSG_SPACE(sizeof(int))((((sizeof(int)) + sizeof (size_t) - 1) & (size_t) ~(sizeof (size_t) - 1)) + (((sizeof (struct cmsghdr)) + sizeof (size_t ) - 1) & (size_t) ~(sizeof (size_t) - 1))) + CMSG_SPACE(sizeof(struct ucred))((((sizeof(struct ucred)) + sizeof (size_t) - 1) & (size_t ) ~(sizeof (size_t) - 1)) + (((sizeof (struct cmsghdr)) + sizeof (size_t) - 1) & (size_t) ~(sizeof (size_t) - 1))); |
| 231 | // The length of the regular payload: |
| 232 | static const unsigned kCrashContextSize = |
| 233 | sizeof(google_breakpad::ExceptionHandler::CrashContext); |
| 234 | |
| 235 | struct msghdr msg = {0}; |
| 236 | struct iovec iov[1]; |
| 237 | alignas(16) char crash_context[kCrashContextSize]; |
| 238 | char control[kControlMsgSize]; |
| 239 | const ssize_t expected_msg_size = sizeof(crash_context); |
| 240 | |
| 241 | iov[0].iov_base = crash_context; |
| 242 | iov[0].iov_len = sizeof(crash_context); |
| 243 | msg.msg_iov = iov; |
| 244 | msg.msg_iovlen = sizeof(iov)/sizeof(iov[0]); |
| 245 | msg.msg_control = control; |
| 246 | msg.msg_controllen = kControlMsgSize; |
| 247 | |
| 248 | const ssize_t msg_size = HANDLE_EINTR(recvmsg(server_fd_, &msg, 0))({ __typeof__(recvmsg(server_fd_, &msg, 0)) eintr_wrapper_result ; do { eintr_wrapper_result = (recvmsg(server_fd_, &msg, 0 )); } while (eintr_wrapper_result == -1 && (*__errno_location ()) == 4); eintr_wrapper_result; }); |
| 249 | if (msg_size != expected_msg_size) |
| 250 | return true; |
| 251 | |
| 252 | if (msg.msg_controllen != kControlMsgSize || |
| 253 | msg.msg_flags & ~MSG_TRUNCMSG_TRUNC) |
| 254 | return true; |
| 255 | |
| 256 | // Walk the control payload and extract the file descriptor and validated pid. |
| 257 | pid_t crashing_pid = -1; |
| 258 | [[maybe_unused]] uid_t crashing_uid = 0; |
| 259 | UniqueFd server_endpoint; |
| 260 | for (struct cmsghdr *hdr = CMSG_FIRSTHDR(&msg)((size_t) (&msg)->msg_controllen >= sizeof (struct cmsghdr ) ? (struct cmsghdr *) (&msg)->msg_control : (struct cmsghdr *) 0); hdr; |
| 261 | hdr = CMSG_NXTHDR(&msg, hdr)__cmsg_nxthdr (&msg, hdr)) { |
| 262 | if (hdr->cmsg_level != SOL_SOCKET1) |
| 263 | continue; |
| 264 | if (hdr->cmsg_type == SCM_RIGHTSSCM_RIGHTS) { |
| 265 | const unsigned len = hdr->cmsg_len - |
| 266 | (((uint8_t*)CMSG_DATA(hdr)((hdr)->__cmsg_data)) - (uint8_t*)hdr); |
| 267 | assert(len % sizeof(int) == 0u)(static_cast <bool> (len % sizeof(int) == 0u) ? void (0 ) : __assert_fail ("len % sizeof(int) == 0u", __builtin_FILE ( ), __builtin_LINE (), __extension__ __PRETTY_FUNCTION__)); |
| 268 | const unsigned num_fds = len / sizeof(int); |
| 269 | if (num_fds > 1 || num_fds == 0) { |
| 270 | // A nasty process could try and send us too many descriptors and |
| 271 | // force a leak. |
| 272 | for (unsigned i = 0; i < num_fds; ++i) |
| 273 | close(reinterpret_cast<int*>(CMSG_DATA(hdr)((hdr)->__cmsg_data))[i]); |
| 274 | return true; |
| 275 | } else { |
| 276 | server_endpoint.reset(*reinterpret_cast<int*>(CMSG_DATA(hdr)((hdr)->__cmsg_data))); |
| 277 | } |
| 278 | } else if (hdr->cmsg_type == SCM_CREDENTIALSSCM_CREDENTIALS) { |
| 279 | const struct ucred *cred = |
| 280 | reinterpret_cast<struct ucred*>(CMSG_DATA(hdr)((hdr)->__cmsg_data)); |
| 281 | crashing_pid = cred->pid; |
| 282 | crashing_uid = cred->uid; |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | if (crashing_pid == -1 || !server_endpoint) { |
| 287 | return true; |
| 288 | } |
| 289 | |
| 290 | string minidump_filename; |
| 291 | if (!MakeMinidumpFilename(minidump_filename)) |
| 292 | return true; |
| 293 | |
| 294 | #if defined(MOZ_OXIDIZED_BREAKPAD1) |
| 295 | ExceptionHandler::CrashContext* breakpad_cc = |
| 296 | reinterpret_cast<ExceptionHandler::CrashContext*>(crash_context); |
| 297 | ExtraCrashData* extra_data = nullptr; |
| 298 | siginfo_t& si = breakpad_cc->siginfo; |
| 299 | signalfd_siginfo signalfd_si = {}; |
| 300 | signalfd_si.ssi_signo = si.si_signo; |
| 301 | signalfd_si.ssi_errno = si.si_errno; |
| 302 | signalfd_si.ssi_code = si.si_code; |
| 303 | signalfd_si.ssi_pid = si.si_pid_sifields._kill.si_pid; |
| 304 | signalfd_si.ssi_uid = si.si_uid_sifields._kill.si_uid; |
| 305 | |
| 306 | switch (si.si_signo) { |
| 307 | case SIGILL4: |
| 308 | case SIGFPE8: |
| 309 | case SIGSEGV11: |
| 310 | case SIGBUS7: |
| 311 | case SIGSYS31: |
| 312 | signalfd_si.ssi_addr = reinterpret_cast<size_t>(si.si_addr_sifields._sigfault.si_addr); |
| 313 | break; |
| 314 | } |
| 315 | |
| 316 | UniqueFd remote_minidump_writer_endpoint; |
| 317 | |
| 318 | // Different UID usually prevents direct ptrace() |
| 319 | if (force_remote_executor_ || crashing_uid != getuid()) { |
| 320 | if (!SendActionToClient( |
| 321 | server_endpoint.get(), |
| 322 | crashing_pid, |
| 323 | GenerationClientAction::ForkAndLaunchExecutor)) { |
| 324 | return true; |
| 325 | } |
| 326 | |
| 327 | // From this point forward, the server endpoint is done with its job. |
| 328 | // It is now the endpoint for talking to the remote executor. |
| 329 | remote_minidump_writer_endpoint = std::move(server_endpoint); |
| 330 | } |
| 331 | |
| 332 | bool res = false; |
| 333 | |
| 334 | MinidumpWriterContext* writer = minidump_writer_create( |
| 335 | minidump_filename.c_str(), |
| 336 | crashing_pid, |
| 337 | breakpad_cc->tid, |
| 338 | &extra_data |
| 339 | ); |
| 340 | DirectAuxvDumpInfo auxvInfo = {}; |
| 341 | if (writer && get_auxv_info_ && get_auxv_info_(crashing_pid, &auxvInfo)) { |
| 342 | minidump_writer_set_direct_auxv_dump_info(writer, &auxvInfo); |
| 343 | } |
| 344 | if (writer) { |
| 345 | const fpregset_t *float_state = nullptr; |
| 346 | |
| 347 | # ifndef __arm__ |
| 348 | float_state = reinterpret_cast<const fpregset_t *>(&breakpad_cc->float_state); |
| 349 | # endif |
| 350 | |
| 351 | minidump_writer_set_crash_context(writer, &breakpad_cc->context, float_state, &signalfd_si); |
| 352 | |
| 353 | if (remote_minidump_writer_endpoint) { |
| 354 | // Pass ownership of the endpoint to the minidump-writer |
| 355 | minidump_writer_set_remote_unix_stream(writer, remote_minidump_writer_endpoint.release()); |
| 356 | } |
| 357 | |
| 358 | res = minidump_writer_dump(writer, extra_data); |
Value stored to 'res' is never read | |
| 359 | } |
| 360 | #else |
| 361 | if (!google_breakpad::WriteMinidump(minidump_filename.c_str(), |
| 362 | crashing_pid, crash_context, |
| 363 | kCrashContextSize)) { |
| 364 | return true; |
| 365 | } |
| 366 | #endif |
| 367 | |
| 368 | ClientInfo info(crashing_pid, this, extra_data); |
| 369 | extra_data = nullptr; // ownership transferred to the info object. |
| 370 | |
| 371 | if (dump_callback_) { |
| 372 | dump_callback_(dump_context_, info, minidump_filename); |
| 373 | } |
| 374 | |
| 375 | // Close the endpoint, which will release a direct client and do nothing in the case of |
| 376 | // a remote client. |
| 377 | server_endpoint.reset(); |
| 378 | |
| 379 | return true; |
| 380 | } |
| 381 | |
| 382 | bool |
| 383 | CrashGenerationServer::ControlEvent(short revents) |
| 384 | { |
| 385 | if (POLLHUP0x010 & revents) |
| 386 | return false; |
| 387 | assert(POLLIN & revents)(static_cast <bool> (0x001 & revents) ? void (0) : __assert_fail ("POLLIN & revents", __builtin_FILE (), __builtin_LINE ( ), __extension__ __PRETTY_FUNCTION__)); |
| 388 | |
| 389 | char command; |
| 390 | if (read(control_pipe_in_, &command, 1)) |
| 391 | return false; |
| 392 | |
| 393 | switch (command) { |
| 394 | case kCommandQuit: |
| 395 | return false; |
| 396 | default: |
| 397 | assert(0)(static_cast <bool> (0) ? void (0) : __assert_fail ("0" , __builtin_FILE (), __builtin_LINE (), __extension__ __PRETTY_FUNCTION__ )); |
| 398 | } |
| 399 | |
| 400 | return true; |
| 401 | } |
| 402 | |
| 403 | bool |
| 404 | CrashGenerationServer::MakeMinidumpFilename(string& outFilename) |
| 405 | { |
| 406 | GUID guid; |
| 407 | char guidString[kGUIDStringLength+1]; |
| 408 | |
| 409 | if (!(CreateGUID(&guid) |
| 410 | && GUIDToString(&guid, guidString, sizeof(guidString)))) |
| 411 | return false; |
| 412 | |
| 413 | char path[PATH_MAX4096]; |
| 414 | pthread_mutex_lock(&dump_dir_mutex_); |
| 415 | snprintf(path, sizeof(path), "%s/%s.dmp", dump_dir_.c_str(), guidString); |
| 416 | pthread_mutex_unlock(&dump_dir_mutex_); |
| 417 | |
| 418 | outFilename = path; |
| 419 | return true; |
| 420 | } |
| 421 | |
| 422 | static bool SendActionToClient( |
| 423 | int server_endpoint, |
| 424 | pid_t crashing_pid, |
| 425 | GenerationClientAction action |
| 426 | ) { |
| 427 | const uint8_t action_byte = static_cast<uint8_t>(action); |
| 428 | |
| 429 | // MSG_DONTWAIT in case the client maliciously tries to freeze us by filling their buffer |
| 430 | const ssize_t rv = HANDLE_EINTR(send(({ __typeof__(send( server_endpoint, &action_byte, sizeof (action_byte), MSG_NOSIGNAL | MSG_DONTWAIT)) eintr_wrapper_result ; do { eintr_wrapper_result = (send( server_endpoint, &action_byte , sizeof(action_byte), MSG_NOSIGNAL | MSG_DONTWAIT)); } while (eintr_wrapper_result == -1 && (*__errno_location () ) == 4); eintr_wrapper_result; }) |
| 431 | server_endpoint, &action_byte, sizeof(action_byte), MSG_NOSIGNAL | MSG_DONTWAIT))({ __typeof__(send( server_endpoint, &action_byte, sizeof (action_byte), MSG_NOSIGNAL | MSG_DONTWAIT)) eintr_wrapper_result ; do { eintr_wrapper_result = (send( server_endpoint, &action_byte , sizeof(action_byte), MSG_NOSIGNAL | MSG_DONTWAIT)); } while (eintr_wrapper_result == -1 && (*__errno_location () ) == 4); eintr_wrapper_result; }); |
| 432 | if (rv == static_cast<ssize_t>(sizeof(action_byte))) { |
| 433 | return true; |
| 434 | } |
| 435 | |
| 436 | char err_msg[256]; |
| 437 | if (rv == -1) { |
| 438 | const int error_code = errno(*__errno_location ()); |
| 439 | snprintf(err_msg, sizeof(err_msg), |
| 440 | "CrashGenerationServer failed to send action %hhu to process %d. Errno %d.\n", |
| 441 | action_byte, |
| 442 | static_cast<int>(crashing_pid), error_code); |
| 443 | } else { |
| 444 | snprintf(err_msg, sizeof(err_msg), |
| 445 | "CrashGenerationServer failed to send action %hhu to process %d with no error.\n", |
| 446 | action_byte, |
| 447 | static_cast<int>(crashing_pid)); |
| 448 | } |
| 449 | |
| 450 | logger::write(err_msg, strlen(err_msg)); |
| 451 | return false; |
| 452 | } |
| 453 | |
| 454 | } // namespace google_breakpad |