1 //===-- CommandObjectProcess.cpp --------------------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "CommandObjectProcess.h" 10 #include "lldb/Breakpoint/Breakpoint.h" 11 #include "lldb/Breakpoint/BreakpointLocation.h" 12 #include "lldb/Breakpoint/BreakpointSite.h" 13 #include "lldb/Core/Module.h" 14 #include "lldb/Core/PluginManager.h" 15 #include "lldb/Host/Host.h" 16 #include "lldb/Host/OptionParser.h" 17 #include "lldb/Host/StringConvert.h" 18 #include "lldb/Interpreter/CommandInterpreter.h" 19 #include "lldb/Interpreter/CommandReturnObject.h" 20 #include "lldb/Interpreter/OptionArgParser.h" 21 #include "lldb/Interpreter/Options.h" 22 #include "lldb/Target/Platform.h" 23 #include "lldb/Target/Process.h" 24 #include "lldb/Target/StopInfo.h" 25 #include "lldb/Target/Target.h" 26 #include "lldb/Target/Thread.h" 27 #include "lldb/Target/UnixSignals.h" 28 #include "lldb/Utility/Args.h" 29 #include "lldb/Utility/State.h" 30 31 using namespace lldb; 32 using namespace lldb_private; 33 34 class CommandObjectProcessLaunchOrAttach : public CommandObjectParsed { 35 public: 36 CommandObjectProcessLaunchOrAttach(CommandInterpreter &interpreter, 37 const char *name, const char *help, 38 const char *syntax, uint32_t flags, 39 const char *new_process_action) 40 : CommandObjectParsed(interpreter, name, help, syntax, flags), 41 m_new_process_action(new_process_action) {} 42 43 ~CommandObjectProcessLaunchOrAttach() override = default; 44 45 protected: 46 bool StopProcessIfNecessary(Process *process, StateType &state, 47 CommandReturnObject &result) { 48 state = eStateInvalid; 49 if (process) { 50 state = process->GetState(); 51 52 if (process->IsAlive() && state != eStateConnected) { 53 char message[1024]; 54 if (process->GetState() == eStateAttaching) 55 ::snprintf(message, sizeof(message), 56 "There is a pending attach, abort it and %s?", 57 m_new_process_action.c_str()); 58 else if (process->GetShouldDetach()) 59 ::snprintf(message, sizeof(message), 60 "There is a running process, detach from it and %s?", 61 m_new_process_action.c_str()); 62 else 63 ::snprintf(message, sizeof(message), 64 "There is a running process, kill it and %s?", 65 m_new_process_action.c_str()); 66 67 if (!m_interpreter.Confirm(message, true)) { 68 result.SetStatus(eReturnStatusFailed); 69 return false; 70 } else { 71 if (process->GetShouldDetach()) { 72 bool keep_stopped = false; 73 Status detach_error(process->Detach(keep_stopped)); 74 if (detach_error.Success()) { 75 result.SetStatus(eReturnStatusSuccessFinishResult); 76 process = nullptr; 77 } else { 78 result.AppendErrorWithFormat( 79 "Failed to detach from process: %s\n", 80 detach_error.AsCString()); 81 result.SetStatus(eReturnStatusFailed); 82 } 83 } else { 84 Status destroy_error(process->Destroy(false)); 85 if (destroy_error.Success()) { 86 result.SetStatus(eReturnStatusSuccessFinishResult); 87 process = nullptr; 88 } else { 89 result.AppendErrorWithFormat("Failed to kill process: %s\n", 90 destroy_error.AsCString()); 91 result.SetStatus(eReturnStatusFailed); 92 } 93 } 94 } 95 } 96 } 97 return result.Succeeded(); 98 } 99 100 std::string m_new_process_action; 101 }; 102 103 // CommandObjectProcessLaunch 104 #pragma mark CommandObjectProcessLaunch 105 class CommandObjectProcessLaunch : public CommandObjectProcessLaunchOrAttach { 106 public: 107 CommandObjectProcessLaunch(CommandInterpreter &interpreter) 108 : CommandObjectProcessLaunchOrAttach( 109 interpreter, "process launch", 110 "Launch the executable in the debugger.", nullptr, 111 eCommandRequiresTarget, "restart"), 112 m_options() { 113 CommandArgumentEntry arg; 114 CommandArgumentData run_args_arg; 115 116 // Define the first (and only) variant of this arg. 117 run_args_arg.arg_type = eArgTypeRunArgs; 118 run_args_arg.arg_repetition = eArgRepeatOptional; 119 120 // There is only one variant this argument could be; put it into the 121 // argument entry. 122 arg.push_back(run_args_arg); 123 124 // Push the data for the first argument into the m_arguments vector. 125 m_arguments.push_back(arg); 126 } 127 128 ~CommandObjectProcessLaunch() override = default; 129 130 void 131 HandleArgumentCompletion(CompletionRequest &request, 132 OptionElementVector &opt_element_vector) override { 133 134 CommandCompletions::InvokeCommonCompletionCallbacks( 135 GetCommandInterpreter(), CommandCompletions::eDiskFileCompletion, 136 request, nullptr); 137 } 138 139 Options *GetOptions() override { return &m_options; } 140 141 const char *GetRepeatCommand(Args ¤t_command_args, 142 uint32_t index) override { 143 // No repeat for "process launch"... 144 return ""; 145 } 146 147 protected: 148 bool DoExecute(Args &launch_args, CommandReturnObject &result) override { 149 Debugger &debugger = GetDebugger(); 150 Target *target = debugger.GetSelectedTarget().get(); 151 // If our listener is nullptr, users aren't allows to launch 152 ModuleSP exe_module_sp = target->GetExecutableModule(); 153 154 if (exe_module_sp == nullptr) { 155 result.AppendError("no file in target, create a debug target using the " 156 "'target create' command"); 157 result.SetStatus(eReturnStatusFailed); 158 return false; 159 } 160 161 StateType state = eStateInvalid; 162 163 if (!StopProcessIfNecessary(m_exe_ctx.GetProcessPtr(), state, result)) 164 return false; 165 166 llvm::StringRef target_settings_argv0 = target->GetArg0(); 167 168 // Determine whether we will disable ASLR or leave it in the default state 169 // (i.e. enabled if the platform supports it). First check if the process 170 // launch options explicitly turn on/off 171 // disabling ASLR. If so, use that setting; 172 // otherwise, use the 'settings target.disable-aslr' setting. 173 bool disable_aslr = false; 174 if (m_options.disable_aslr != eLazyBoolCalculate) { 175 // The user specified an explicit setting on the process launch line. 176 // Use it. 177 disable_aslr = (m_options.disable_aslr == eLazyBoolYes); 178 } else { 179 // The user did not explicitly specify whether to disable ASLR. Fall 180 // back to the target.disable-aslr setting. 181 disable_aslr = target->GetDisableASLR(); 182 } 183 184 if (disable_aslr) 185 m_options.launch_info.GetFlags().Set(eLaunchFlagDisableASLR); 186 else 187 m_options.launch_info.GetFlags().Clear(eLaunchFlagDisableASLR); 188 189 if (target->GetDetachOnError()) 190 m_options.launch_info.GetFlags().Set(eLaunchFlagDetachOnError); 191 192 if (target->GetDisableSTDIO()) 193 m_options.launch_info.GetFlags().Set(eLaunchFlagDisableSTDIO); 194 195 // Merge the launch info environment with the target environment. 196 Environment target_env = target->GetEnvironment(); 197 m_options.launch_info.GetEnvironment().insert(target_env.begin(), 198 target_env.end()); 199 200 if (!target_settings_argv0.empty()) { 201 m_options.launch_info.GetArguments().AppendArgument( 202 target_settings_argv0); 203 m_options.launch_info.SetExecutableFile( 204 exe_module_sp->GetPlatformFileSpec(), false); 205 } else { 206 m_options.launch_info.SetExecutableFile( 207 exe_module_sp->GetPlatformFileSpec(), true); 208 } 209 210 if (launch_args.GetArgumentCount() == 0) { 211 m_options.launch_info.GetArguments().AppendArguments( 212 target->GetProcessLaunchInfo().GetArguments()); 213 } else { 214 m_options.launch_info.GetArguments().AppendArguments(launch_args); 215 // Save the arguments for subsequent runs in the current target. 216 target->SetRunArguments(launch_args); 217 } 218 219 StreamString stream; 220 Status error = target->Launch(m_options.launch_info, &stream); 221 222 if (error.Success()) { 223 ProcessSP process_sp(target->GetProcessSP()); 224 if (process_sp) { 225 // There is a race condition where this thread will return up the call 226 // stack to the main command handler and show an (lldb) prompt before 227 // HandlePrivateEvent (from PrivateStateThread) has a chance to call 228 // PushProcessIOHandler(). 229 process_sp->SyncIOHandler(0, std::chrono::seconds(2)); 230 231 llvm::StringRef data = stream.GetString(); 232 if (!data.empty()) 233 result.AppendMessage(data); 234 const char *archname = 235 exe_module_sp->GetArchitecture().GetArchitectureName(); 236 result.AppendMessageWithFormat( 237 "Process %" PRIu64 " launched: '%s' (%s)\n", process_sp->GetID(), 238 exe_module_sp->GetFileSpec().GetPath().c_str(), archname); 239 result.SetStatus(eReturnStatusSuccessFinishResult); 240 result.SetDidChangeProcessState(true); 241 } else { 242 result.AppendError( 243 "no error returned from Target::Launch, and target has no process"); 244 result.SetStatus(eReturnStatusFailed); 245 } 246 } else { 247 result.AppendError(error.AsCString()); 248 result.SetStatus(eReturnStatusFailed); 249 } 250 return result.Succeeded(); 251 } 252 253 protected: 254 ProcessLaunchCommandOptions m_options; 255 }; 256 257 #define LLDB_OPTIONS_process_attach 258 #include "CommandOptions.inc" 259 260 #pragma mark CommandObjectProcessAttach 261 class CommandObjectProcessAttach : public CommandObjectProcessLaunchOrAttach { 262 public: 263 class CommandOptions : public Options { 264 public: 265 CommandOptions() : Options() { 266 // Keep default values of all options in one place: OptionParsingStarting 267 // () 268 OptionParsingStarting(nullptr); 269 } 270 271 ~CommandOptions() override = default; 272 273 Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg, 274 ExecutionContext *execution_context) override { 275 Status error; 276 const int short_option = m_getopt_table[option_idx].val; 277 switch (short_option) { 278 case 'c': 279 attach_info.SetContinueOnceAttached(true); 280 break; 281 282 case 'p': { 283 lldb::pid_t pid; 284 if (option_arg.getAsInteger(0, pid)) { 285 error.SetErrorStringWithFormat("invalid process ID '%s'", 286 option_arg.str().c_str()); 287 } else { 288 attach_info.SetProcessID(pid); 289 } 290 } break; 291 292 case 'P': 293 attach_info.SetProcessPluginName(option_arg); 294 break; 295 296 case 'n': 297 attach_info.GetExecutableFile().SetFile(option_arg, 298 FileSpec::Style::native); 299 break; 300 301 case 'w': 302 attach_info.SetWaitForLaunch(true); 303 break; 304 305 case 'i': 306 attach_info.SetIgnoreExisting(false); 307 break; 308 309 default: 310 llvm_unreachable("Unimplemented option"); 311 } 312 return error; 313 } 314 315 void OptionParsingStarting(ExecutionContext *execution_context) override { 316 attach_info.Clear(); 317 } 318 319 llvm::ArrayRef<OptionDefinition> GetDefinitions() override { 320 return llvm::makeArrayRef(g_process_attach_options); 321 } 322 323 void HandleOptionArgumentCompletion( 324 CompletionRequest &request, OptionElementVector &opt_element_vector, 325 int opt_element_index, CommandInterpreter &interpreter) override { 326 int opt_arg_pos = opt_element_vector[opt_element_index].opt_arg_pos; 327 int opt_defs_index = opt_element_vector[opt_element_index].opt_defs_index; 328 329 // We are only completing the name option for now... 330 331 // Are we in the name? 332 if (GetDefinitions()[opt_defs_index].short_option != 'n') 333 return; 334 335 // Look to see if there is a -P argument provided, and if so use that 336 // plugin, otherwise use the default plugin. 337 338 const char *partial_name = nullptr; 339 partial_name = request.GetParsedLine().GetArgumentAtIndex(opt_arg_pos); 340 341 PlatformSP platform_sp(interpreter.GetPlatform(true)); 342 if (!platform_sp) 343 return; 344 ProcessInstanceInfoList process_infos; 345 ProcessInstanceInfoMatch match_info; 346 if (partial_name) { 347 match_info.GetProcessInfo().GetExecutableFile().SetFile( 348 partial_name, FileSpec::Style::native); 349 match_info.SetNameMatchType(NameMatch::StartsWith); 350 } 351 platform_sp->FindProcesses(match_info, process_infos); 352 const size_t num_matches = process_infos.GetSize(); 353 if (num_matches == 0) 354 return; 355 for (size_t i = 0; i < num_matches; ++i) { 356 request.AddCompletion(process_infos.GetProcessNameAtIndex(i)); 357 } 358 } 359 360 // Instance variables to hold the values for command options. 361 362 ProcessAttachInfo attach_info; 363 }; 364 365 CommandObjectProcessAttach(CommandInterpreter &interpreter) 366 : CommandObjectProcessLaunchOrAttach( 367 interpreter, "process attach", "Attach to a process.", 368 "process attach <cmd-options>", 0, "attach"), 369 m_options() {} 370 371 ~CommandObjectProcessAttach() override = default; 372 373 Options *GetOptions() override { return &m_options; } 374 375 protected: 376 bool DoExecute(Args &command, CommandReturnObject &result) override { 377 PlatformSP platform_sp( 378 GetDebugger().GetPlatformList().GetSelectedPlatform()); 379 380 Target *target = GetDebugger().GetSelectedTarget().get(); 381 // N.B. The attach should be synchronous. It doesn't help much to get the 382 // prompt back between initiating the attach and the target actually 383 // stopping. So even if the interpreter is set to be asynchronous, we wait 384 // for the stop ourselves here. 385 386 StateType state = eStateInvalid; 387 Process *process = m_exe_ctx.GetProcessPtr(); 388 389 if (!StopProcessIfNecessary(process, state, result)) 390 return false; 391 392 if (target == nullptr) { 393 // If there isn't a current target create one. 394 TargetSP new_target_sp; 395 Status error; 396 397 error = GetDebugger().GetTargetList().CreateTarget( 398 GetDebugger(), "", "", eLoadDependentsNo, 399 nullptr, // No platform options 400 new_target_sp); 401 target = new_target_sp.get(); 402 if (target == nullptr || error.Fail()) { 403 result.AppendError(error.AsCString("Error creating target")); 404 return false; 405 } 406 GetDebugger().GetTargetList().SetSelectedTarget(target); 407 } 408 409 // Record the old executable module, we want to issue a warning if the 410 // process of attaching changed the current executable (like somebody said 411 // "file foo" then attached to a PID whose executable was bar.) 412 413 ModuleSP old_exec_module_sp = target->GetExecutableModule(); 414 ArchSpec old_arch_spec = target->GetArchitecture(); 415 416 if (command.GetArgumentCount()) { 417 result.AppendErrorWithFormat("Invalid arguments for '%s'.\nUsage: %s\n", 418 m_cmd_name.c_str(), m_cmd_syntax.c_str()); 419 result.SetStatus(eReturnStatusFailed); 420 return false; 421 } 422 423 m_interpreter.UpdateExecutionContext(nullptr); 424 StreamString stream; 425 const auto error = target->Attach(m_options.attach_info, &stream); 426 if (error.Success()) { 427 ProcessSP process_sp(target->GetProcessSP()); 428 if (process_sp) { 429 result.AppendMessage(stream.GetString()); 430 result.SetStatus(eReturnStatusSuccessFinishNoResult); 431 result.SetDidChangeProcessState(true); 432 result.SetAbnormalStopWasExpected(true); 433 } else { 434 result.AppendError( 435 "no error returned from Target::Attach, and target has no process"); 436 result.SetStatus(eReturnStatusFailed); 437 } 438 } else { 439 result.AppendErrorWithFormat("attach failed: %s\n", error.AsCString()); 440 result.SetStatus(eReturnStatusFailed); 441 } 442 443 if (!result.Succeeded()) 444 return false; 445 446 // Okay, we're done. Last step is to warn if the executable module has 447 // changed: 448 char new_path[PATH_MAX]; 449 ModuleSP new_exec_module_sp(target->GetExecutableModule()); 450 if (!old_exec_module_sp) { 451 // We might not have a module if we attached to a raw pid... 452 if (new_exec_module_sp) { 453 new_exec_module_sp->GetFileSpec().GetPath(new_path, PATH_MAX); 454 result.AppendMessageWithFormat("Executable module set to \"%s\".\n", 455 new_path); 456 } 457 } else if (old_exec_module_sp->GetFileSpec() != 458 new_exec_module_sp->GetFileSpec()) { 459 char old_path[PATH_MAX]; 460 461 old_exec_module_sp->GetFileSpec().GetPath(old_path, PATH_MAX); 462 new_exec_module_sp->GetFileSpec().GetPath(new_path, PATH_MAX); 463 464 result.AppendWarningWithFormat( 465 "Executable module changed from \"%s\" to \"%s\".\n", old_path, 466 new_path); 467 } 468 469 if (!old_arch_spec.IsValid()) { 470 result.AppendMessageWithFormat( 471 "Architecture set to: %s.\n", 472 target->GetArchitecture().GetTriple().getTriple().c_str()); 473 } else if (!old_arch_spec.IsExactMatch(target->GetArchitecture())) { 474 result.AppendWarningWithFormat( 475 "Architecture changed from %s to %s.\n", 476 old_arch_spec.GetTriple().getTriple().c_str(), 477 target->GetArchitecture().GetTriple().getTriple().c_str()); 478 } 479 480 // This supports the use-case scenario of immediately continuing the 481 // process once attached. 482 if (m_options.attach_info.GetContinueOnceAttached()) 483 m_interpreter.HandleCommand("process continue", eLazyBoolNo, result); 484 485 return result.Succeeded(); 486 } 487 488 CommandOptions m_options; 489 }; 490 491 // CommandObjectProcessContinue 492 493 #define LLDB_OPTIONS_process_continue 494 #include "CommandOptions.inc" 495 496 #pragma mark CommandObjectProcessContinue 497 498 class CommandObjectProcessContinue : public CommandObjectParsed { 499 public: 500 CommandObjectProcessContinue(CommandInterpreter &interpreter) 501 : CommandObjectParsed( 502 interpreter, "process continue", 503 "Continue execution of all threads in the current process.", 504 "process continue", 505 eCommandRequiresProcess | eCommandTryTargetAPILock | 506 eCommandProcessMustBeLaunched | eCommandProcessMustBePaused), 507 m_options() {} 508 509 ~CommandObjectProcessContinue() override = default; 510 511 protected: 512 class CommandOptions : public Options { 513 public: 514 CommandOptions() : Options() { 515 // Keep default values of all options in one place: OptionParsingStarting 516 // () 517 OptionParsingStarting(nullptr); 518 } 519 520 ~CommandOptions() override = default; 521 522 Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg, 523 ExecutionContext *execution_context) override { 524 Status error; 525 const int short_option = m_getopt_table[option_idx].val; 526 switch (short_option) { 527 case 'i': 528 if (option_arg.getAsInteger(0, m_ignore)) 529 error.SetErrorStringWithFormat( 530 "invalid value for ignore option: \"%s\", should be a number.", 531 option_arg.str().c_str()); 532 break; 533 534 default: 535 llvm_unreachable("Unimplemented option"); 536 } 537 return error; 538 } 539 540 void OptionParsingStarting(ExecutionContext *execution_context) override { 541 m_ignore = 0; 542 } 543 544 llvm::ArrayRef<OptionDefinition> GetDefinitions() override { 545 return llvm::makeArrayRef(g_process_continue_options); 546 } 547 548 uint32_t m_ignore; 549 }; 550 551 bool DoExecute(Args &command, CommandReturnObject &result) override { 552 Process *process = m_exe_ctx.GetProcessPtr(); 553 bool synchronous_execution = m_interpreter.GetSynchronous(); 554 StateType state = process->GetState(); 555 if (state == eStateStopped) { 556 if (command.GetArgumentCount() != 0) { 557 result.AppendErrorWithFormat( 558 "The '%s' command does not take any arguments.\n", 559 m_cmd_name.c_str()); 560 result.SetStatus(eReturnStatusFailed); 561 return false; 562 } 563 564 if (m_options.m_ignore > 0) { 565 ThreadSP sel_thread_sp(GetDefaultThread()->shared_from_this()); 566 if (sel_thread_sp) { 567 StopInfoSP stop_info_sp = sel_thread_sp->GetStopInfo(); 568 if (stop_info_sp && 569 stop_info_sp->GetStopReason() == eStopReasonBreakpoint) { 570 lldb::break_id_t bp_site_id = 571 (lldb::break_id_t)stop_info_sp->GetValue(); 572 BreakpointSiteSP bp_site_sp( 573 process->GetBreakpointSiteList().FindByID(bp_site_id)); 574 if (bp_site_sp) { 575 const size_t num_owners = bp_site_sp->GetNumberOfOwners(); 576 for (size_t i = 0; i < num_owners; i++) { 577 Breakpoint &bp_ref = 578 bp_site_sp->GetOwnerAtIndex(i)->GetBreakpoint(); 579 if (!bp_ref.IsInternal()) { 580 bp_ref.SetIgnoreCount(m_options.m_ignore); 581 } 582 } 583 } 584 } 585 } 586 } 587 588 { // Scope for thread list mutex: 589 std::lock_guard<std::recursive_mutex> guard( 590 process->GetThreadList().GetMutex()); 591 const uint32_t num_threads = process->GetThreadList().GetSize(); 592 593 // Set the actions that the threads should each take when resuming 594 for (uint32_t idx = 0; idx < num_threads; ++idx) { 595 const bool override_suspend = false; 596 process->GetThreadList().GetThreadAtIndex(idx)->SetResumeState( 597 eStateRunning, override_suspend); 598 } 599 } 600 601 const uint32_t iohandler_id = process->GetIOHandlerID(); 602 603 StreamString stream; 604 Status error; 605 if (synchronous_execution) 606 error = process->ResumeSynchronous(&stream); 607 else 608 error = process->Resume(); 609 610 if (error.Success()) { 611 // There is a race condition where this thread will return up the call 612 // stack to the main command handler and show an (lldb) prompt before 613 // HandlePrivateEvent (from PrivateStateThread) has a chance to call 614 // PushProcessIOHandler(). 615 process->SyncIOHandler(iohandler_id, std::chrono::seconds(2)); 616 617 result.AppendMessageWithFormat("Process %" PRIu64 " resuming\n", 618 process->GetID()); 619 if (synchronous_execution) { 620 // If any state changed events had anything to say, add that to the 621 // result 622 result.AppendMessage(stream.GetString()); 623 624 result.SetDidChangeProcessState(true); 625 result.SetStatus(eReturnStatusSuccessFinishNoResult); 626 } else { 627 result.SetStatus(eReturnStatusSuccessContinuingNoResult); 628 } 629 } else { 630 result.AppendErrorWithFormat("Failed to resume process: %s.\n", 631 error.AsCString()); 632 result.SetStatus(eReturnStatusFailed); 633 } 634 } else { 635 result.AppendErrorWithFormat( 636 "Process cannot be continued from its current state (%s).\n", 637 StateAsCString(state)); 638 result.SetStatus(eReturnStatusFailed); 639 } 640 return result.Succeeded(); 641 } 642 643 Options *GetOptions() override { return &m_options; } 644 645 CommandOptions m_options; 646 }; 647 648 // CommandObjectProcessDetach 649 #define LLDB_OPTIONS_process_detach 650 #include "CommandOptions.inc" 651 652 #pragma mark CommandObjectProcessDetach 653 654 class CommandObjectProcessDetach : public CommandObjectParsed { 655 public: 656 class CommandOptions : public Options { 657 public: 658 CommandOptions() : Options() { OptionParsingStarting(nullptr); } 659 660 ~CommandOptions() override = default; 661 662 Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg, 663 ExecutionContext *execution_context) override { 664 Status error; 665 const int short_option = m_getopt_table[option_idx].val; 666 667 switch (short_option) { 668 case 's': 669 bool tmp_result; 670 bool success; 671 tmp_result = OptionArgParser::ToBoolean(option_arg, false, &success); 672 if (!success) 673 error.SetErrorStringWithFormat("invalid boolean option: \"%s\"", 674 option_arg.str().c_str()); 675 else { 676 if (tmp_result) 677 m_keep_stopped = eLazyBoolYes; 678 else 679 m_keep_stopped = eLazyBoolNo; 680 } 681 break; 682 default: 683 llvm_unreachable("Unimplemented option"); 684 } 685 return error; 686 } 687 688 void OptionParsingStarting(ExecutionContext *execution_context) override { 689 m_keep_stopped = eLazyBoolCalculate; 690 } 691 692 llvm::ArrayRef<OptionDefinition> GetDefinitions() override { 693 return llvm::makeArrayRef(g_process_detach_options); 694 } 695 696 // Instance variables to hold the values for command options. 697 LazyBool m_keep_stopped; 698 }; 699 700 CommandObjectProcessDetach(CommandInterpreter &interpreter) 701 : CommandObjectParsed(interpreter, "process detach", 702 "Detach from the current target process.", 703 "process detach", 704 eCommandRequiresProcess | eCommandTryTargetAPILock | 705 eCommandProcessMustBeLaunched), 706 m_options() {} 707 708 ~CommandObjectProcessDetach() override = default; 709 710 Options *GetOptions() override { return &m_options; } 711 712 protected: 713 bool DoExecute(Args &command, CommandReturnObject &result) override { 714 Process *process = m_exe_ctx.GetProcessPtr(); 715 // FIXME: This will be a Command Option: 716 bool keep_stopped; 717 if (m_options.m_keep_stopped == eLazyBoolCalculate) { 718 // Check the process default: 719 keep_stopped = process->GetDetachKeepsStopped(); 720 } else if (m_options.m_keep_stopped == eLazyBoolYes) 721 keep_stopped = true; 722 else 723 keep_stopped = false; 724 725 Status error(process->Detach(keep_stopped)); 726 if (error.Success()) { 727 result.SetStatus(eReturnStatusSuccessFinishResult); 728 } else { 729 result.AppendErrorWithFormat("Detach failed: %s\n", error.AsCString()); 730 result.SetStatus(eReturnStatusFailed); 731 return false; 732 } 733 return result.Succeeded(); 734 } 735 736 CommandOptions m_options; 737 }; 738 739 // CommandObjectProcessConnect 740 #define LLDB_OPTIONS_process_connect 741 #include "CommandOptions.inc" 742 743 #pragma mark CommandObjectProcessConnect 744 745 class CommandObjectProcessConnect : public CommandObjectParsed { 746 public: 747 class CommandOptions : public Options { 748 public: 749 CommandOptions() : Options() { 750 // Keep default values of all options in one place: OptionParsingStarting 751 // () 752 OptionParsingStarting(nullptr); 753 } 754 755 ~CommandOptions() override = default; 756 757 Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg, 758 ExecutionContext *execution_context) override { 759 Status error; 760 const int short_option = m_getopt_table[option_idx].val; 761 762 switch (short_option) { 763 case 'p': 764 plugin_name.assign(option_arg); 765 break; 766 767 default: 768 llvm_unreachable("Unimplemented option"); 769 } 770 return error; 771 } 772 773 void OptionParsingStarting(ExecutionContext *execution_context) override { 774 plugin_name.clear(); 775 } 776 777 llvm::ArrayRef<OptionDefinition> GetDefinitions() override { 778 return llvm::makeArrayRef(g_process_connect_options); 779 } 780 781 // Instance variables to hold the values for command options. 782 783 std::string plugin_name; 784 }; 785 786 CommandObjectProcessConnect(CommandInterpreter &interpreter) 787 : CommandObjectParsed(interpreter, "process connect", 788 "Connect to a remote debug service.", 789 "process connect <remote-url>", 0), 790 m_options() {} 791 792 ~CommandObjectProcessConnect() override = default; 793 794 Options *GetOptions() override { return &m_options; } 795 796 protected: 797 bool DoExecute(Args &command, CommandReturnObject &result) override { 798 if (command.GetArgumentCount() != 1) { 799 result.AppendErrorWithFormat( 800 "'%s' takes exactly one argument:\nUsage: %s\n", m_cmd_name.c_str(), 801 m_cmd_syntax.c_str()); 802 result.SetStatus(eReturnStatusFailed); 803 return false; 804 } 805 806 Process *process = m_exe_ctx.GetProcessPtr(); 807 if (process && process->IsAlive()) { 808 result.AppendErrorWithFormat( 809 "Process %" PRIu64 810 " is currently being debugged, kill the process before connecting.\n", 811 process->GetID()); 812 result.SetStatus(eReturnStatusFailed); 813 return false; 814 } 815 816 const char *plugin_name = nullptr; 817 if (!m_options.plugin_name.empty()) 818 plugin_name = m_options.plugin_name.c_str(); 819 820 Status error; 821 Debugger &debugger = GetDebugger(); 822 PlatformSP platform_sp = m_interpreter.GetPlatform(true); 823 ProcessSP process_sp = platform_sp->ConnectProcess( 824 command.GetArgumentAtIndex(0), plugin_name, debugger, 825 debugger.GetSelectedTarget().get(), error); 826 if (error.Fail() || process_sp == nullptr) { 827 result.AppendError(error.AsCString("Error connecting to the process")); 828 result.SetStatus(eReturnStatusFailed); 829 return false; 830 } 831 return true; 832 } 833 834 CommandOptions m_options; 835 }; 836 837 // CommandObjectProcessPlugin 838 #pragma mark CommandObjectProcessPlugin 839 840 class CommandObjectProcessPlugin : public CommandObjectProxy { 841 public: 842 CommandObjectProcessPlugin(CommandInterpreter &interpreter) 843 : CommandObjectProxy( 844 interpreter, "process plugin", 845 "Send a custom command to the current target process plug-in.", 846 "process plugin <args>", 0) {} 847 848 ~CommandObjectProcessPlugin() override = default; 849 850 CommandObject *GetProxyCommandObject() override { 851 Process *process = m_interpreter.GetExecutionContext().GetProcessPtr(); 852 if (process) 853 return process->GetPluginCommandObject(); 854 return nullptr; 855 } 856 }; 857 858 // CommandObjectProcessLoad 859 #define LLDB_OPTIONS_process_load 860 #include "CommandOptions.inc" 861 862 #pragma mark CommandObjectProcessLoad 863 864 class CommandObjectProcessLoad : public CommandObjectParsed { 865 public: 866 class CommandOptions : public Options { 867 public: 868 CommandOptions() : Options() { 869 // Keep default values of all options in one place: OptionParsingStarting 870 // () 871 OptionParsingStarting(nullptr); 872 } 873 874 ~CommandOptions() override = default; 875 876 Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg, 877 ExecutionContext *execution_context) override { 878 Status error; 879 const int short_option = m_getopt_table[option_idx].val; 880 switch (short_option) { 881 case 'i': 882 do_install = true; 883 if (!option_arg.empty()) 884 install_path.SetFile(option_arg, FileSpec::Style::native); 885 break; 886 default: 887 llvm_unreachable("Unimplemented option"); 888 } 889 return error; 890 } 891 892 void OptionParsingStarting(ExecutionContext *execution_context) override { 893 do_install = false; 894 install_path.Clear(); 895 } 896 897 llvm::ArrayRef<OptionDefinition> GetDefinitions() override { 898 return llvm::makeArrayRef(g_process_load_options); 899 } 900 901 // Instance variables to hold the values for command options. 902 bool do_install; 903 FileSpec install_path; 904 }; 905 906 CommandObjectProcessLoad(CommandInterpreter &interpreter) 907 : CommandObjectParsed(interpreter, "process load", 908 "Load a shared library into the current process.", 909 "process load <filename> [<filename> ...]", 910 eCommandRequiresProcess | eCommandTryTargetAPILock | 911 eCommandProcessMustBeLaunched | 912 eCommandProcessMustBePaused), 913 m_options() {} 914 915 ~CommandObjectProcessLoad() override = default; 916 917 Options *GetOptions() override { return &m_options; } 918 919 protected: 920 bool DoExecute(Args &command, CommandReturnObject &result) override { 921 Process *process = m_exe_ctx.GetProcessPtr(); 922 923 for (auto &entry : command.entries()) { 924 Status error; 925 PlatformSP platform = process->GetTarget().GetPlatform(); 926 llvm::StringRef image_path = entry.ref(); 927 uint32_t image_token = LLDB_INVALID_IMAGE_TOKEN; 928 929 if (!m_options.do_install) { 930 FileSpec image_spec(image_path); 931 platform->ResolveRemotePath(image_spec, image_spec); 932 image_token = 933 platform->LoadImage(process, FileSpec(), image_spec, error); 934 } else if (m_options.install_path) { 935 FileSpec image_spec(image_path); 936 FileSystem::Instance().Resolve(image_spec); 937 platform->ResolveRemotePath(m_options.install_path, 938 m_options.install_path); 939 image_token = platform->LoadImage(process, image_spec, 940 m_options.install_path, error); 941 } else { 942 FileSpec image_spec(image_path); 943 FileSystem::Instance().Resolve(image_spec); 944 image_token = 945 platform->LoadImage(process, image_spec, FileSpec(), error); 946 } 947 948 if (image_token != LLDB_INVALID_IMAGE_TOKEN) { 949 result.AppendMessageWithFormat( 950 "Loading \"%s\"...ok\nImage %u loaded.\n", image_path.str().c_str(), 951 image_token); 952 result.SetStatus(eReturnStatusSuccessFinishResult); 953 } else { 954 result.AppendErrorWithFormat("failed to load '%s': %s", 955 image_path.str().c_str(), 956 error.AsCString()); 957 result.SetStatus(eReturnStatusFailed); 958 } 959 } 960 return result.Succeeded(); 961 } 962 963 CommandOptions m_options; 964 }; 965 966 // CommandObjectProcessUnload 967 #pragma mark CommandObjectProcessUnload 968 969 class CommandObjectProcessUnload : public CommandObjectParsed { 970 public: 971 CommandObjectProcessUnload(CommandInterpreter &interpreter) 972 : CommandObjectParsed( 973 interpreter, "process unload", 974 "Unload a shared library from the current process using the index " 975 "returned by a previous call to \"process load\".", 976 "process unload <index>", 977 eCommandRequiresProcess | eCommandTryTargetAPILock | 978 eCommandProcessMustBeLaunched | eCommandProcessMustBePaused) {} 979 980 ~CommandObjectProcessUnload() override = default; 981 982 protected: 983 bool DoExecute(Args &command, CommandReturnObject &result) override { 984 Process *process = m_exe_ctx.GetProcessPtr(); 985 986 for (auto &entry : command.entries()) { 987 uint32_t image_token; 988 if (entry.ref().getAsInteger(0, image_token)) { 989 result.AppendErrorWithFormat("invalid image index argument '%s'", 990 entry.ref().str().c_str()); 991 result.SetStatus(eReturnStatusFailed); 992 break; 993 } else { 994 Status error(process->GetTarget().GetPlatform()->UnloadImage( 995 process, image_token)); 996 if (error.Success()) { 997 result.AppendMessageWithFormat( 998 "Unloading shared library with index %u...ok\n", image_token); 999 result.SetStatus(eReturnStatusSuccessFinishResult); 1000 } else { 1001 result.AppendErrorWithFormat("failed to unload image: %s", 1002 error.AsCString()); 1003 result.SetStatus(eReturnStatusFailed); 1004 break; 1005 } 1006 } 1007 } 1008 return result.Succeeded(); 1009 } 1010 }; 1011 1012 // CommandObjectProcessSignal 1013 #pragma mark CommandObjectProcessSignal 1014 1015 class CommandObjectProcessSignal : public CommandObjectParsed { 1016 public: 1017 CommandObjectProcessSignal(CommandInterpreter &interpreter) 1018 : CommandObjectParsed(interpreter, "process signal", 1019 "Send a UNIX signal to the current target process.", 1020 nullptr, eCommandRequiresProcess | 1021 eCommandTryTargetAPILock) { 1022 CommandArgumentEntry arg; 1023 CommandArgumentData signal_arg; 1024 1025 // Define the first (and only) variant of this arg. 1026 signal_arg.arg_type = eArgTypeUnixSignal; 1027 signal_arg.arg_repetition = eArgRepeatPlain; 1028 1029 // There is only one variant this argument could be; put it into the 1030 // argument entry. 1031 arg.push_back(signal_arg); 1032 1033 // Push the data for the first argument into the m_arguments vector. 1034 m_arguments.push_back(arg); 1035 } 1036 1037 ~CommandObjectProcessSignal() override = default; 1038 1039 protected: 1040 bool DoExecute(Args &command, CommandReturnObject &result) override { 1041 Process *process = m_exe_ctx.GetProcessPtr(); 1042 1043 if (command.GetArgumentCount() == 1) { 1044 int signo = LLDB_INVALID_SIGNAL_NUMBER; 1045 1046 const char *signal_name = command.GetArgumentAtIndex(0); 1047 if (::isxdigit(signal_name[0])) 1048 signo = 1049 StringConvert::ToSInt32(signal_name, LLDB_INVALID_SIGNAL_NUMBER, 0); 1050 else 1051 signo = process->GetUnixSignals()->GetSignalNumberFromName(signal_name); 1052 1053 if (signo == LLDB_INVALID_SIGNAL_NUMBER) { 1054 result.AppendErrorWithFormat("Invalid signal argument '%s'.\n", 1055 command.GetArgumentAtIndex(0)); 1056 result.SetStatus(eReturnStatusFailed); 1057 } else { 1058 Status error(process->Signal(signo)); 1059 if (error.Success()) { 1060 result.SetStatus(eReturnStatusSuccessFinishResult); 1061 } else { 1062 result.AppendErrorWithFormat("Failed to send signal %i: %s\n", signo, 1063 error.AsCString()); 1064 result.SetStatus(eReturnStatusFailed); 1065 } 1066 } 1067 } else { 1068 result.AppendErrorWithFormat( 1069 "'%s' takes exactly one signal number argument:\nUsage: %s\n", 1070 m_cmd_name.c_str(), m_cmd_syntax.c_str()); 1071 result.SetStatus(eReturnStatusFailed); 1072 } 1073 return result.Succeeded(); 1074 } 1075 }; 1076 1077 // CommandObjectProcessInterrupt 1078 #pragma mark CommandObjectProcessInterrupt 1079 1080 class CommandObjectProcessInterrupt : public CommandObjectParsed { 1081 public: 1082 CommandObjectProcessInterrupt(CommandInterpreter &interpreter) 1083 : CommandObjectParsed(interpreter, "process interrupt", 1084 "Interrupt the current target process.", 1085 "process interrupt", 1086 eCommandRequiresProcess | eCommandTryTargetAPILock | 1087 eCommandProcessMustBeLaunched) {} 1088 1089 ~CommandObjectProcessInterrupt() override = default; 1090 1091 protected: 1092 bool DoExecute(Args &command, CommandReturnObject &result) override { 1093 Process *process = m_exe_ctx.GetProcessPtr(); 1094 if (process == nullptr) { 1095 result.AppendError("no process to halt"); 1096 result.SetStatus(eReturnStatusFailed); 1097 return false; 1098 } 1099 1100 if (command.GetArgumentCount() == 0) { 1101 bool clear_thread_plans = true; 1102 Status error(process->Halt(clear_thread_plans)); 1103 if (error.Success()) { 1104 result.SetStatus(eReturnStatusSuccessFinishResult); 1105 } else { 1106 result.AppendErrorWithFormat("Failed to halt process: %s\n", 1107 error.AsCString()); 1108 result.SetStatus(eReturnStatusFailed); 1109 } 1110 } else { 1111 result.AppendErrorWithFormat("'%s' takes no arguments:\nUsage: %s\n", 1112 m_cmd_name.c_str(), m_cmd_syntax.c_str()); 1113 result.SetStatus(eReturnStatusFailed); 1114 } 1115 return result.Succeeded(); 1116 } 1117 }; 1118 1119 // CommandObjectProcessKill 1120 #pragma mark CommandObjectProcessKill 1121 1122 class CommandObjectProcessKill : public CommandObjectParsed { 1123 public: 1124 CommandObjectProcessKill(CommandInterpreter &interpreter) 1125 : CommandObjectParsed(interpreter, "process kill", 1126 "Terminate the current target process.", 1127 "process kill", 1128 eCommandRequiresProcess | eCommandTryTargetAPILock | 1129 eCommandProcessMustBeLaunched) {} 1130 1131 ~CommandObjectProcessKill() override = default; 1132 1133 protected: 1134 bool DoExecute(Args &command, CommandReturnObject &result) override { 1135 Process *process = m_exe_ctx.GetProcessPtr(); 1136 if (process == nullptr) { 1137 result.AppendError("no process to kill"); 1138 result.SetStatus(eReturnStatusFailed); 1139 return false; 1140 } 1141 1142 if (command.GetArgumentCount() == 0) { 1143 Status error(process->Destroy(true)); 1144 if (error.Success()) { 1145 result.SetStatus(eReturnStatusSuccessFinishResult); 1146 } else { 1147 result.AppendErrorWithFormat("Failed to kill process: %s\n", 1148 error.AsCString()); 1149 result.SetStatus(eReturnStatusFailed); 1150 } 1151 } else { 1152 result.AppendErrorWithFormat("'%s' takes no arguments:\nUsage: %s\n", 1153 m_cmd_name.c_str(), m_cmd_syntax.c_str()); 1154 result.SetStatus(eReturnStatusFailed); 1155 } 1156 return result.Succeeded(); 1157 } 1158 }; 1159 1160 // CommandObjectProcessSaveCore 1161 #pragma mark CommandObjectProcessSaveCore 1162 1163 class CommandObjectProcessSaveCore : public CommandObjectParsed { 1164 public: 1165 CommandObjectProcessSaveCore(CommandInterpreter &interpreter) 1166 : CommandObjectParsed(interpreter, "process save-core", 1167 "Save the current process as a core file using an " 1168 "appropriate file type.", 1169 "process save-core FILE", 1170 eCommandRequiresProcess | eCommandTryTargetAPILock | 1171 eCommandProcessMustBeLaunched) {} 1172 1173 ~CommandObjectProcessSaveCore() override = default; 1174 1175 protected: 1176 bool DoExecute(Args &command, CommandReturnObject &result) override { 1177 ProcessSP process_sp = m_exe_ctx.GetProcessSP(); 1178 if (process_sp) { 1179 if (command.GetArgumentCount() == 1) { 1180 FileSpec output_file(command.GetArgumentAtIndex(0)); 1181 Status error = PluginManager::SaveCore(process_sp, output_file); 1182 if (error.Success()) { 1183 result.SetStatus(eReturnStatusSuccessFinishResult); 1184 } else { 1185 result.AppendErrorWithFormat( 1186 "Failed to save core file for process: %s\n", error.AsCString()); 1187 result.SetStatus(eReturnStatusFailed); 1188 } 1189 } else { 1190 result.AppendErrorWithFormat("'%s' takes one arguments:\nUsage: %s\n", 1191 m_cmd_name.c_str(), m_cmd_syntax.c_str()); 1192 result.SetStatus(eReturnStatusFailed); 1193 } 1194 } else { 1195 result.AppendError("invalid process"); 1196 result.SetStatus(eReturnStatusFailed); 1197 return false; 1198 } 1199 1200 return result.Succeeded(); 1201 } 1202 }; 1203 1204 // CommandObjectProcessStatus 1205 #pragma mark CommandObjectProcessStatus 1206 1207 class CommandObjectProcessStatus : public CommandObjectParsed { 1208 public: 1209 CommandObjectProcessStatus(CommandInterpreter &interpreter) 1210 : CommandObjectParsed( 1211 interpreter, "process status", 1212 "Show status and stop location for the current target process.", 1213 "process status", 1214 eCommandRequiresProcess | eCommandTryTargetAPILock) {} 1215 1216 ~CommandObjectProcessStatus() override = default; 1217 1218 bool DoExecute(Args &command, CommandReturnObject &result) override { 1219 Stream &strm = result.GetOutputStream(); 1220 result.SetStatus(eReturnStatusSuccessFinishNoResult); 1221 // No need to check "process" for validity as eCommandRequiresProcess 1222 // ensures it is valid 1223 Process *process = m_exe_ctx.GetProcessPtr(); 1224 const bool only_threads_with_stop_reason = true; 1225 const uint32_t start_frame = 0; 1226 const uint32_t num_frames = 1; 1227 const uint32_t num_frames_with_source = 1; 1228 const bool stop_format = true; 1229 process->GetStatus(strm); 1230 process->GetThreadStatus(strm, only_threads_with_stop_reason, start_frame, 1231 num_frames, num_frames_with_source, stop_format); 1232 return result.Succeeded(); 1233 } 1234 }; 1235 1236 // CommandObjectProcessHandle 1237 #define LLDB_OPTIONS_process_handle 1238 #include "CommandOptions.inc" 1239 1240 #pragma mark CommandObjectProcessHandle 1241 1242 class CommandObjectProcessHandle : public CommandObjectParsed { 1243 public: 1244 class CommandOptions : public Options { 1245 public: 1246 CommandOptions() : Options() { OptionParsingStarting(nullptr); } 1247 1248 ~CommandOptions() override = default; 1249 1250 Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg, 1251 ExecutionContext *execution_context) override { 1252 Status error; 1253 const int short_option = m_getopt_table[option_idx].val; 1254 1255 switch (short_option) { 1256 case 's': 1257 stop = option_arg; 1258 break; 1259 case 'n': 1260 notify = option_arg; 1261 break; 1262 case 'p': 1263 pass = option_arg; 1264 break; 1265 default: 1266 llvm_unreachable("Unimplemented option"); 1267 } 1268 return error; 1269 } 1270 1271 void OptionParsingStarting(ExecutionContext *execution_context) override { 1272 stop.clear(); 1273 notify.clear(); 1274 pass.clear(); 1275 } 1276 1277 llvm::ArrayRef<OptionDefinition> GetDefinitions() override { 1278 return llvm::makeArrayRef(g_process_handle_options); 1279 } 1280 1281 // Instance variables to hold the values for command options. 1282 1283 std::string stop; 1284 std::string notify; 1285 std::string pass; 1286 }; 1287 1288 CommandObjectProcessHandle(CommandInterpreter &interpreter) 1289 : CommandObjectParsed(interpreter, "process handle", 1290 "Manage LLDB handling of OS signals for the " 1291 "current target process. Defaults to showing " 1292 "current policy.", 1293 nullptr, eCommandRequiresTarget), 1294 m_options() { 1295 SetHelpLong("\nIf no signals are specified, update them all. If no update " 1296 "option is specified, list the current values."); 1297 CommandArgumentEntry arg; 1298 CommandArgumentData signal_arg; 1299 1300 signal_arg.arg_type = eArgTypeUnixSignal; 1301 signal_arg.arg_repetition = eArgRepeatStar; 1302 1303 arg.push_back(signal_arg); 1304 1305 m_arguments.push_back(arg); 1306 } 1307 1308 ~CommandObjectProcessHandle() override = default; 1309 1310 Options *GetOptions() override { return &m_options; } 1311 1312 bool VerifyCommandOptionValue(const std::string &option, int &real_value) { 1313 bool okay = true; 1314 bool success = false; 1315 bool tmp_value = OptionArgParser::ToBoolean(option, false, &success); 1316 1317 if (success && tmp_value) 1318 real_value = 1; 1319 else if (success && !tmp_value) 1320 real_value = 0; 1321 else { 1322 // If the value isn't 'true' or 'false', it had better be 0 or 1. 1323 real_value = StringConvert::ToUInt32(option.c_str(), 3); 1324 if (real_value != 0 && real_value != 1) 1325 okay = false; 1326 } 1327 1328 return okay; 1329 } 1330 1331 void PrintSignalHeader(Stream &str) { 1332 str.Printf("NAME PASS STOP NOTIFY\n"); 1333 str.Printf("=========== ===== ===== ======\n"); 1334 } 1335 1336 void PrintSignal(Stream &str, int32_t signo, const char *sig_name, 1337 const UnixSignalsSP &signals_sp) { 1338 bool stop; 1339 bool suppress; 1340 bool notify; 1341 1342 str.Printf("%-11s ", sig_name); 1343 if (signals_sp->GetSignalInfo(signo, suppress, stop, notify)) { 1344 bool pass = !suppress; 1345 str.Printf("%s %s %s", (pass ? "true " : "false"), 1346 (stop ? "true " : "false"), (notify ? "true " : "false")); 1347 } 1348 str.Printf("\n"); 1349 } 1350 1351 void PrintSignalInformation(Stream &str, Args &signal_args, 1352 int num_valid_signals, 1353 const UnixSignalsSP &signals_sp) { 1354 PrintSignalHeader(str); 1355 1356 if (num_valid_signals > 0) { 1357 size_t num_args = signal_args.GetArgumentCount(); 1358 for (size_t i = 0; i < num_args; ++i) { 1359 int32_t signo = signals_sp->GetSignalNumberFromName( 1360 signal_args.GetArgumentAtIndex(i)); 1361 if (signo != LLDB_INVALID_SIGNAL_NUMBER) 1362 PrintSignal(str, signo, signal_args.GetArgumentAtIndex(i), 1363 signals_sp); 1364 } 1365 } else // Print info for ALL signals 1366 { 1367 int32_t signo = signals_sp->GetFirstSignalNumber(); 1368 while (signo != LLDB_INVALID_SIGNAL_NUMBER) { 1369 PrintSignal(str, signo, signals_sp->GetSignalAsCString(signo), 1370 signals_sp); 1371 signo = signals_sp->GetNextSignalNumber(signo); 1372 } 1373 } 1374 } 1375 1376 protected: 1377 bool DoExecute(Args &signal_args, CommandReturnObject &result) override { 1378 Target *target_sp = &GetSelectedTarget(); 1379 1380 ProcessSP process_sp = target_sp->GetProcessSP(); 1381 1382 if (!process_sp) { 1383 result.AppendError("No current process; cannot handle signals until you " 1384 "have a valid process.\n"); 1385 result.SetStatus(eReturnStatusFailed); 1386 return false; 1387 } 1388 1389 int stop_action = -1; // -1 means leave the current setting alone 1390 int pass_action = -1; // -1 means leave the current setting alone 1391 int notify_action = -1; // -1 means leave the current setting alone 1392 1393 if (!m_options.stop.empty() && 1394 !VerifyCommandOptionValue(m_options.stop, stop_action)) { 1395 result.AppendError("Invalid argument for command option --stop; must be " 1396 "true or false.\n"); 1397 result.SetStatus(eReturnStatusFailed); 1398 return false; 1399 } 1400 1401 if (!m_options.notify.empty() && 1402 !VerifyCommandOptionValue(m_options.notify, notify_action)) { 1403 result.AppendError("Invalid argument for command option --notify; must " 1404 "be true or false.\n"); 1405 result.SetStatus(eReturnStatusFailed); 1406 return false; 1407 } 1408 1409 if (!m_options.pass.empty() && 1410 !VerifyCommandOptionValue(m_options.pass, pass_action)) { 1411 result.AppendError("Invalid argument for command option --pass; must be " 1412 "true or false.\n"); 1413 result.SetStatus(eReturnStatusFailed); 1414 return false; 1415 } 1416 1417 size_t num_args = signal_args.GetArgumentCount(); 1418 UnixSignalsSP signals_sp = process_sp->GetUnixSignals(); 1419 int num_signals_set = 0; 1420 1421 if (num_args > 0) { 1422 for (const auto &arg : signal_args) { 1423 int32_t signo = signals_sp->GetSignalNumberFromName(arg.c_str()); 1424 if (signo != LLDB_INVALID_SIGNAL_NUMBER) { 1425 // Casting the actions as bools here should be okay, because 1426 // VerifyCommandOptionValue guarantees the value is either 0 or 1. 1427 if (stop_action != -1) 1428 signals_sp->SetShouldStop(signo, stop_action); 1429 if (pass_action != -1) { 1430 bool suppress = !pass_action; 1431 signals_sp->SetShouldSuppress(signo, suppress); 1432 } 1433 if (notify_action != -1) 1434 signals_sp->SetShouldNotify(signo, notify_action); 1435 ++num_signals_set; 1436 } else { 1437 result.AppendErrorWithFormat("Invalid signal name '%s'\n", 1438 arg.c_str()); 1439 } 1440 } 1441 } else { 1442 // No signal specified, if any command options were specified, update ALL 1443 // signals. 1444 if ((notify_action != -1) || (stop_action != -1) || (pass_action != -1)) { 1445 if (m_interpreter.Confirm( 1446 "Do you really want to update all the signals?", false)) { 1447 int32_t signo = signals_sp->GetFirstSignalNumber(); 1448 while (signo != LLDB_INVALID_SIGNAL_NUMBER) { 1449 if (notify_action != -1) 1450 signals_sp->SetShouldNotify(signo, notify_action); 1451 if (stop_action != -1) 1452 signals_sp->SetShouldStop(signo, stop_action); 1453 if (pass_action != -1) { 1454 bool suppress = !pass_action; 1455 signals_sp->SetShouldSuppress(signo, suppress); 1456 } 1457 signo = signals_sp->GetNextSignalNumber(signo); 1458 } 1459 } 1460 } 1461 } 1462 1463 PrintSignalInformation(result.GetOutputStream(), signal_args, 1464 num_signals_set, signals_sp); 1465 1466 if (num_signals_set > 0) 1467 result.SetStatus(eReturnStatusSuccessFinishNoResult); 1468 else 1469 result.SetStatus(eReturnStatusFailed); 1470 1471 return result.Succeeded(); 1472 } 1473 1474 CommandOptions m_options; 1475 }; 1476 1477 // CommandObjectMultiwordProcess 1478 1479 CommandObjectMultiwordProcess::CommandObjectMultiwordProcess( 1480 CommandInterpreter &interpreter) 1481 : CommandObjectMultiword( 1482 interpreter, "process", 1483 "Commands for interacting with processes on the current platform.", 1484 "process <subcommand> [<subcommand-options>]") { 1485 LoadSubCommand("attach", 1486 CommandObjectSP(new CommandObjectProcessAttach(interpreter))); 1487 LoadSubCommand("launch", 1488 CommandObjectSP(new CommandObjectProcessLaunch(interpreter))); 1489 LoadSubCommand("continue", CommandObjectSP(new CommandObjectProcessContinue( 1490 interpreter))); 1491 LoadSubCommand("connect", 1492 CommandObjectSP(new CommandObjectProcessConnect(interpreter))); 1493 LoadSubCommand("detach", 1494 CommandObjectSP(new CommandObjectProcessDetach(interpreter))); 1495 LoadSubCommand("load", 1496 CommandObjectSP(new CommandObjectProcessLoad(interpreter))); 1497 LoadSubCommand("unload", 1498 CommandObjectSP(new CommandObjectProcessUnload(interpreter))); 1499 LoadSubCommand("signal", 1500 CommandObjectSP(new CommandObjectProcessSignal(interpreter))); 1501 LoadSubCommand("handle", 1502 CommandObjectSP(new CommandObjectProcessHandle(interpreter))); 1503 LoadSubCommand("status", 1504 CommandObjectSP(new CommandObjectProcessStatus(interpreter))); 1505 LoadSubCommand("interrupt", CommandObjectSP(new CommandObjectProcessInterrupt( 1506 interpreter))); 1507 LoadSubCommand("kill", 1508 CommandObjectSP(new CommandObjectProcessKill(interpreter))); 1509 LoadSubCommand("plugin", 1510 CommandObjectSP(new CommandObjectProcessPlugin(interpreter))); 1511 LoadSubCommand("save-core", CommandObjectSP(new CommandObjectProcessSaveCore( 1512 interpreter))); 1513 } 1514 1515 CommandObjectMultiwordProcess::~CommandObjectMultiwordProcess() = default; 1516