//===-- CommandObjectProcess.cpp --------------------------------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// #include "CommandObjectProcess.h" // C Includes // C++ Includes // Other libraries and framework includes // Project includes #include "lldb/Interpreter/Args.h" #include "lldb/Interpreter/Options.h" #include "lldb/Core/State.h" #include "lldb/Interpreter/CommandInterpreter.h" #include "lldb/Interpreter/CommandReturnObject.h" #include "./CommandObjectThread.h" #include "lldb/Target/Process.h" #include "lldb/Target/Target.h" #include "lldb/Target/Thread.h" using namespace lldb; using namespace lldb_private; //------------------------------------------------------------------------- // CommandObjectProcessLaunch //------------------------------------------------------------------------- class CommandObjectProcessLaunch : public CommandObject { public: class CommandOptions : public Options { public: CommandOptions () : Options() { // Keep default values of all options in one place: ResetOptionValues () ResetOptionValues (); } ~CommandOptions () { } Error SetOptionValue (int option_idx, const char *option_arg) { Error error; char short_option = (char) m_getopt_table[option_idx].val; switch (short_option) { case 's': stop_at_entry = true; break; case 'e': stderr_path = option_arg; break; case 'i': stdin_path = option_arg; break; case 'o': stdout_path = option_arg; break; case 'p': plugin_name = option_arg; break; case 't': if (option_arg && option_arg[0]) tty_name.assign (option_arg); in_new_tty = true; break; default: error.SetErrorStringWithFormat("Invalid short option character '%c'.\n", short_option); break; } return error; } void ResetOptionValues () { Options::ResetOptionValues(); stop_at_entry = false; in_new_tty = false; tty_name.clear(); stdin_path.clear(); stdout_path.clear(); stderr_path.clear(); plugin_name.clear(); } const lldb::OptionDefinition* GetDefinitions () { return g_option_table; } // Options table: Required for subclasses of Options. static lldb::OptionDefinition g_option_table[]; // Instance variables to hold the values for command options. bool stop_at_entry; bool in_new_tty; std::string tty_name; std::string stderr_path; std::string stdin_path; std::string stdout_path; std::string plugin_name; }; CommandObjectProcessLaunch (CommandInterpreter &interpreter) : CommandObject (interpreter, "process launch", "Launch the executable in the debugger.", NULL) { CommandArgumentEntry arg; CommandArgumentData run_args_arg; // Define the first (and only) variant of this arg. run_args_arg.arg_type = eArgTypeRunArgs; run_args_arg.arg_repetition = eArgRepeatOptional; // There is only one variant this argument could be; put it into the argument entry. arg.push_back (run_args_arg); // Push the data for the first argument into the m_arguments vector. m_arguments.push_back (arg); } ~CommandObjectProcessLaunch () { } Options * GetOptions () { return &m_options; } bool Execute (Args& launch_args, CommandReturnObject &result) { Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get(); if (target == NULL) { result.AppendError ("invalid target, set executable file using 'file' command"); result.SetStatus (eReturnStatusFailed); return false; } // If our listener is NULL, users aren't allows to launch char filename[PATH_MAX]; const Module *exe_module = target->GetExecutableModule().get(); exe_module->GetFileSpec().GetPath(filename, sizeof(filename)); Process *process = m_interpreter.GetDebugger().GetExecutionContext().process; if (process && process->IsAlive()) { result.AppendErrorWithFormat ("Process %u is currently being debugged, kill the process before running again.\n", process->GetID()); result.SetStatus (eReturnStatusFailed); return false; } const char *plugin_name; if (!m_options.plugin_name.empty()) plugin_name = m_options.plugin_name.c_str(); else plugin_name = NULL; process = target->CreateProcess (m_interpreter.GetDebugger().GetListener(), plugin_name).get(); if (process == NULL) { result.AppendErrorWithFormat ("Failed to find a process plugin for executable.\n"); result.SetStatus (eReturnStatusFailed); return false; } // If no launch args were given on the command line, then use any that // might have been set using the "run-args" set variable. if (launch_args.GetArgumentCount() == 0) { if (process->GetRunArguments().GetArgumentCount() > 0) launch_args = process->GetRunArguments(); } if (m_options.in_new_tty) { char exec_file_path[PATH_MAX]; if (exe_module->GetFileSpec().GetPath(exec_file_path, sizeof(exec_file_path))) { launch_args.InsertArgumentAtIndex(0, exec_file_path); } else { result.AppendError("invalid executable"); result.SetStatus (eReturnStatusFailed); return false; } } Args environment; process->GetEnvironmentAsArgs (environment); uint32_t launch_flags = eLaunchFlagNone; if (process->GetDisableASLR()) launch_flags |= eLaunchFlagDisableASLR; const char **inferior_argv = launch_args.GetArgumentCount() ? launch_args.GetConstArgumentVector() : NULL; const char **inferior_envp = environment.GetArgumentCount() ? environment.GetConstArgumentVector() : NULL; Error error; if (m_options.in_new_tty) { lldb::pid_t pid = Host::LaunchInNewTerminal (m_options.tty_name.c_str(), inferior_argv, inferior_envp, &exe_module->GetArchitecture(), true, process->GetDisableASLR()); if (pid != LLDB_INVALID_PROCESS_ID) error = process->Attach (pid); } else { const char * stdin_path = NULL; const char * stdout_path = NULL; const char * stderr_path = NULL; // Were any standard input/output/error paths given on the command line? if (m_options.stdin_path.empty() && m_options.stdout_path.empty() && m_options.stderr_path.empty()) { // No standard file handles were given on the command line, check // with the process object in case they were give using "set settings" stdin_path = process->GetStandardInputPath(); stdout_path = process->GetStandardOutputPath(); stderr_path = process->GetStandardErrorPath(); } else { stdin_path = m_options.stdin_path.empty() ? NULL : m_options.stdin_path.c_str(); stdout_path = m_options.stdout_path.empty() ? NULL : m_options.stdout_path.c_str(); stderr_path = m_options.stderr_path.empty() ? NULL : m_options.stderr_path.c_str(); } if (stdin_path == NULL) stdin_path = "/dev/null"; if (stdout_path == NULL) stdout_path = "/dev/null"; if (stderr_path == NULL) stderr_path = "/dev/null"; error = process->Launch (inferior_argv, inferior_envp, launch_flags, stdin_path, stdout_path, stderr_path); } if (error.Success()) { const char *archname = exe_module->GetArchitecture().AsCString(); result.AppendMessageWithFormat ("Process %i launched: '%s' (%s)\n", process->GetID(), filename, archname); result.SetDidChangeProcessState (true); if (m_options.stop_at_entry == false) { result.SetStatus (eReturnStatusSuccessContinuingNoResult); StateType state = process->WaitForProcessToStop (NULL); if (state == eStateStopped) { error = process->Resume(); if (error.Success()) { bool synchronous_execution = m_interpreter.GetSynchronous (); if (synchronous_execution) { state = process->WaitForProcessToStop (NULL); result.SetDidChangeProcessState (true); result.SetStatus (eReturnStatusSuccessFinishResult); } else { result.SetStatus (eReturnStatusSuccessContinuingNoResult); } } } } } return result.Succeeded(); } virtual const char *GetRepeatCommand (Args ¤t_command_args, uint32_t index) { // No repeat for "process launch"... return ""; } protected: CommandOptions m_options; }; #define SET1 LLDB_OPT_SET_1 #define SET2 LLDB_OPT_SET_2 lldb::OptionDefinition CommandObjectProcessLaunch::CommandOptions::g_option_table[] = { { SET1 | SET2, false, "stop-at-entry", 's', no_argument, NULL, 0, eArgTypeNone, "Stop at the entry point of the program when launching a process."}, { SET1 , false, "stdin", 'i', required_argument, NULL, 0, eArgTypePath, "Redirect stdin for the process to ."}, { SET1 , false, "stdout", 'o', required_argument, NULL, 0, eArgTypePath, "Redirect stdout for the process to ."}, { SET1 , false, "stderr", 'e', required_argument, NULL, 0, eArgTypePath, "Redirect stderr for the process to ."}, { SET1 | SET2, false, "plugin", 'p', required_argument, NULL, 0, eArgTypePlugin, "Name of the process plugin you want to use."}, { SET2, false, "tty", 't', optional_argument, NULL, 0, eArgTypePath, "Start the process in a terminal. If is specified, look for a terminal whose name contains , else start the process in a new terminal."}, { 0, false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL } }; #undef SET1 #undef SET2 //------------------------------------------------------------------------- // CommandObjectProcessAttach //------------------------------------------------------------------------- class CommandObjectProcessAttach : public CommandObject { public: class CommandOptions : public Options { public: CommandOptions () : Options() { // Keep default values of all options in one place: ResetOptionValues () ResetOptionValues (); } ~CommandOptions () { } Error SetOptionValue (int option_idx, const char *option_arg) { Error error; char short_option = (char) m_getopt_table[option_idx].val; bool success = false; switch (short_option) { case 'p': pid = Args::StringToUInt32 (option_arg, LLDB_INVALID_PROCESS_ID, 0, &success); if (!success || pid == LLDB_INVALID_PROCESS_ID) { error.SetErrorStringWithFormat("Invalid process ID '%s'.\n", option_arg); } break; case 'P': plugin_name = option_arg; break; case 'n': name.assign(option_arg); break; case 'w': waitfor = true; break; default: error.SetErrorStringWithFormat("Invalid short option character '%c'.\n", short_option); break; } return error; } void ResetOptionValues () { Options::ResetOptionValues(); pid = LLDB_INVALID_PROCESS_ID; name.clear(); waitfor = false; } const lldb::OptionDefinition* GetDefinitions () { return g_option_table; } virtual bool HandleOptionArgumentCompletion (CommandInterpreter &interpeter, Args &input, int cursor_index, int char_pos, OptionElementVector &opt_element_vector, int opt_element_index, int match_start_point, int max_return_elements, bool &word_complete, StringList &matches) { int opt_arg_pos = opt_element_vector[opt_element_index].opt_arg_pos; int opt_defs_index = opt_element_vector[opt_element_index].opt_defs_index; // We are only completing the name option for now... const lldb::OptionDefinition *opt_defs = GetDefinitions(); if (opt_defs[opt_defs_index].short_option == 'n') { // Are we in the name? // Look to see if there is a -P argument provided, and if so use that plugin, otherwise // use the default plugin. Process *process = interpeter.GetDebugger().GetExecutionContext().process; bool need_to_delete_process = false; const char *partial_name = NULL; partial_name = input.GetArgumentAtIndex(opt_arg_pos); if (process && process->IsAlive()) return true; Target *target = interpeter.GetDebugger().GetSelectedTarget().get(); if (target == NULL) { // No target has been set yet, for now do host completion. Otherwise I don't know how we would // figure out what the right target to use is... std::vector pids; Host::ListProcessesMatchingName (partial_name, matches, pids); return true; } if (!process) { process = target->CreateProcess (interpeter.GetDebugger().GetListener(), partial_name).get(); need_to_delete_process = true; } if (process) { matches.Clear(); std::vector pids; process->ListProcessesMatchingName (NULL, matches, pids); if (need_to_delete_process) target->DeleteCurrentProcess(); return true; } } return false; } // Options table: Required for subclasses of Options. static lldb::OptionDefinition g_option_table[]; // Instance variables to hold the values for command options. lldb::pid_t pid; std::string plugin_name; std::string name; bool waitfor; }; CommandObjectProcessAttach (CommandInterpreter &interpreter) : CommandObject (interpreter, "process attach", "Attach to a process.", "process attach ") { } ~CommandObjectProcessAttach () { } bool Execute (Args& command, CommandReturnObject &result) { Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get(); Process *process = m_interpreter.GetDebugger().GetExecutionContext().process; if (process) { if (process->IsAlive()) { result.AppendErrorWithFormat ("Process %u is currently being debugged, kill the process before attaching.\n", process->GetID()); result.SetStatus (eReturnStatusFailed); return false; } } if (target == NULL) { // If there isn't a current target create one. TargetSP new_target_sp; FileSpec emptyFileSpec; ArchSpec emptyArchSpec; Error error; error = m_interpreter.GetDebugger().GetTargetList().CreateTarget (m_interpreter.GetDebugger(), emptyFileSpec, emptyArchSpec, NULL, false, new_target_sp); target = new_target_sp.get(); if (target == NULL || error.Fail()) { result.AppendError(error.AsCString("Error creating empty target")); return false; } m_interpreter.GetDebugger().GetTargetList().SetSelectedTarget(target); } // Record the old executable module, we want to issue a warning if the process of attaching changed the // current executable (like somebody said "file foo" then attached to a PID whose executable was bar.) ModuleSP old_exec_module_sp = target->GetExecutableModule(); ArchSpec old_arch_spec = target->GetArchitecture(); if (command.GetArgumentCount()) { result.AppendErrorWithFormat("Invalid arguments for '%s'.\nUsage: \n", m_cmd_name.c_str(), m_cmd_syntax.c_str()); result.SetStatus (eReturnStatusFailed); } else { const char *plugin_name = NULL; if (!m_options.plugin_name.empty()) plugin_name = m_options.plugin_name.c_str(); process = target->CreateProcess (m_interpreter.GetDebugger().GetListener(), plugin_name).get(); if (process) { Error error; int attach_pid = m_options.pid; const char *wait_name = NULL; if (m_options.name.empty()) { if (old_exec_module_sp) { wait_name = old_exec_module_sp->GetFileSpec().GetFilename().AsCString(); } } else { wait_name = m_options.name.c_str(); } // If we are waiting for a process with this name to show up, do that first. if (m_options.waitfor) { if (wait_name == NULL) { result.AppendError("Invalid arguments: must have a file loaded or supply a process name with the waitfor option.\n"); result.SetStatus (eReturnStatusFailed); return false; } m_interpreter.GetDebugger().GetOutputStream().Printf("Waiting to attach to a process named \"%s\".\n", wait_name); error = process->Attach (wait_name, m_options.waitfor); if (error.Success()) { result.SetStatus (eReturnStatusSuccessContinuingNoResult); } else { result.AppendErrorWithFormat ("Waiting for a process to launch named '%s': %s\n", wait_name, error.AsCString()); result.SetStatus (eReturnStatusFailed); return false; } } else { // If the process was specified by name look it up, so we can warn if there are multiple // processes with this pid. if (attach_pid == LLDB_INVALID_PROCESS_ID && wait_name != NULL) { std::vector pids; StringList matches; process->ListProcessesMatchingName(wait_name, matches, pids); if (matches.GetSize() > 1) { result.AppendErrorWithFormat("More than one process named %s\n", wait_name); result.SetStatus (eReturnStatusFailed); return false; } else if (matches.GetSize() == 0) { result.AppendErrorWithFormat("Could not find a process named %s\n", wait_name); result.SetStatus (eReturnStatusFailed); return false; } else { attach_pid = pids[0]; } } if (attach_pid != LLDB_INVALID_PROCESS_ID) { error = process->Attach (attach_pid); if (error.Success()) { result.SetStatus (eReturnStatusSuccessContinuingNoResult); } else { result.AppendErrorWithFormat ("Attaching to process %i failed: %s.\n", attach_pid, error.AsCString()); result.SetStatus (eReturnStatusFailed); } } else { result.AppendErrorWithFormat ("No PID specified for attach\n", attach_pid, error.AsCString()); result.SetStatus (eReturnStatusFailed); } } } } if (result.Succeeded()) { // Okay, we're done. Last step is to warn if the executable module has changed: if (!old_exec_module_sp) { char new_path[PATH_MAX + 1]; target->GetExecutableModule()->GetFileSpec().GetPath(new_path, PATH_MAX); result.AppendMessageWithFormat("Executable module set to \"%s\".\n", new_path); } else if (old_exec_module_sp->GetFileSpec() != target->GetExecutableModule()->GetFileSpec()) { char old_path[PATH_MAX + 1]; char new_path[PATH_MAX + 1]; old_exec_module_sp->GetFileSpec().GetPath(old_path, PATH_MAX); target->GetExecutableModule()->GetFileSpec().GetPath (new_path, PATH_MAX); result.AppendWarningWithFormat("Executable module changed from \"%s\" to \"%s\".\n", old_path, new_path); } if (!old_arch_spec.IsValid()) { result.AppendMessageWithFormat ("Architecture set to: %s.\n", target->GetArchitecture().AsCString()); } else if (old_arch_spec != target->GetArchitecture()) { result.AppendWarningWithFormat("Architecture changed from %s to %s.\n", old_arch_spec.AsCString(), target->GetArchitecture().AsCString()); } } return result.Succeeded(); } Options * GetOptions () { return &m_options; } protected: CommandOptions m_options; }; lldb::OptionDefinition CommandObjectProcessAttach::CommandOptions::g_option_table[] = { { LLDB_OPT_SET_ALL, false, "plugin", 'P', required_argument, NULL, 0, eArgTypePlugin, "Name of the process plugin you want to use."}, { LLDB_OPT_SET_1, false, "pid", 'p', required_argument, NULL, 0, eArgTypePid, "The process ID of an existing process to attach to."}, { LLDB_OPT_SET_2, false, "name", 'n', required_argument, NULL, 0, eArgTypeProcessName, "The name of the process to attach to."}, { LLDB_OPT_SET_2, false, "waitfor",'w', no_argument, NULL, 0, eArgTypeNone, "Wait for the the process with to launch."}, { 0, false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL } }; //------------------------------------------------------------------------- // CommandObjectProcessContinue //------------------------------------------------------------------------- class CommandObjectProcessContinue : public CommandObject { public: CommandObjectProcessContinue (CommandInterpreter &interpreter) : CommandObject (interpreter, "process continue", "Continue execution of all threads in the current process.", "process continue", eFlagProcessMustBeLaunched | eFlagProcessMustBePaused) { } ~CommandObjectProcessContinue () { } bool Execute (Args& command, CommandReturnObject &result) { Process *process = m_interpreter.GetDebugger().GetExecutionContext().process; bool synchronous_execution = m_interpreter.GetSynchronous (); if (process == NULL) { result.AppendError ("no process to continue"); result.SetStatus (eReturnStatusFailed); return false; } StateType state = process->GetState(); if (state == eStateStopped) { if (command.GetArgumentCount() != 0) { result.AppendErrorWithFormat ("The '%s' command does not take any arguments.\n", m_cmd_name.c_str()); result.SetStatus (eReturnStatusFailed); return false; } const uint32_t num_threads = process->GetThreadList().GetSize(); // Set the actions that the threads should each take when resuming for (uint32_t idx=0; idxGetThreadList().GetThreadAtIndex(idx)->SetResumeState (eStateRunning); } Error error(process->Resume()); if (error.Success()) { result.AppendMessageWithFormat ("Process %i resuming\n", process->GetID()); if (synchronous_execution) { state = process->WaitForProcessToStop (NULL); result.SetDidChangeProcessState (true); result.AppendMessageWithFormat ("Process %i %s\n", process->GetID(), StateAsCString (state)); result.SetStatus (eReturnStatusSuccessFinishNoResult); } else { result.SetStatus (eReturnStatusSuccessContinuingNoResult); } } else { result.AppendErrorWithFormat("Failed to resume process: %s.\n", error.AsCString()); result.SetStatus (eReturnStatusFailed); } } else { result.AppendErrorWithFormat ("Process cannot be continued from its current state (%s).\n", StateAsCString(state)); result.SetStatus (eReturnStatusFailed); } return result.Succeeded(); } }; //------------------------------------------------------------------------- // CommandObjectProcessDetach //------------------------------------------------------------------------- class CommandObjectProcessDetach : public CommandObject { public: CommandObjectProcessDetach (CommandInterpreter &interpreter) : CommandObject (interpreter, "process detach", "Detach from the current process being debugged.", "process detach", eFlagProcessMustBeLaunched) { } ~CommandObjectProcessDetach () { } bool Execute (Args& command, CommandReturnObject &result) { Process *process = m_interpreter.GetDebugger().GetExecutionContext().process; if (process == NULL) { result.AppendError ("must have a valid process in order to detach"); result.SetStatus (eReturnStatusFailed); return false; } result.AppendMessageWithFormat ("Detaching from process %i\n", process->GetID()); Error error (process->Detach()); if (error.Success()) { result.SetStatus (eReturnStatusSuccessFinishResult); } else { result.AppendErrorWithFormat ("Detach failed: %s\n", error.AsCString()); result.SetStatus (eReturnStatusFailed); return false; } return result.Succeeded(); } }; //------------------------------------------------------------------------- // CommandObjectProcessSignal //------------------------------------------------------------------------- class CommandObjectProcessSignal : public CommandObject { public: CommandObjectProcessSignal (CommandInterpreter &interpreter) : CommandObject (interpreter, "process signal", "Send a UNIX signal to the current process being debugged.", NULL) { CommandArgumentEntry arg; CommandArgumentData signal_arg; // Define the first (and only) variant of this arg. signal_arg.arg_type = eArgTypeUnixSignal; signal_arg.arg_repetition = eArgRepeatPlain; // There is only one variant this argument could be; put it into the argument entry. arg.push_back (signal_arg); // Push the data for the first argument into the m_arguments vector. m_arguments.push_back (arg); } ~CommandObjectProcessSignal () { } bool Execute (Args& command, CommandReturnObject &result) { Process *process = m_interpreter.GetDebugger().GetExecutionContext().process; if (process == NULL) { result.AppendError ("no process to signal"); result.SetStatus (eReturnStatusFailed); return false; } if (command.GetArgumentCount() == 1) { int signo = LLDB_INVALID_SIGNAL_NUMBER; const char *signal_name = command.GetArgumentAtIndex(0); if (::isxdigit (signal_name[0])) signo = Args::StringToSInt32(signal_name, LLDB_INVALID_SIGNAL_NUMBER, 0); else signo = process->GetUnixSignals().GetSignalNumberFromName (signal_name); if (signo == LLDB_INVALID_SIGNAL_NUMBER) { result.AppendErrorWithFormat ("Invalid signal argument '%s'.\n", command.GetArgumentAtIndex(0)); result.SetStatus (eReturnStatusFailed); } else { Error error (process->Signal (signo)); if (error.Success()) { result.SetStatus (eReturnStatusSuccessFinishResult); } else { result.AppendErrorWithFormat ("Failed to send signal %i: %s\n", signo, error.AsCString()); result.SetStatus (eReturnStatusFailed); } } } else { result.AppendErrorWithFormat("'%s' takes exactly one signal number argument:\nUsage: \n", m_cmd_name.c_str(), m_cmd_syntax.c_str()); result.SetStatus (eReturnStatusFailed); } return result.Succeeded(); } }; //------------------------------------------------------------------------- // CommandObjectProcessInterrupt //------------------------------------------------------------------------- class CommandObjectProcessInterrupt : public CommandObject { public: CommandObjectProcessInterrupt (CommandInterpreter &interpreter) : CommandObject (interpreter, "process interrupt", "Interrupt the current process being debugged.", "process interrupt", eFlagProcessMustBeLaunched) { } ~CommandObjectProcessInterrupt () { } bool Execute (Args& command, CommandReturnObject &result) { Process *process = m_interpreter.GetDebugger().GetExecutionContext().process; if (process == NULL) { result.AppendError ("no process to halt"); result.SetStatus (eReturnStatusFailed); return false; } if (command.GetArgumentCount() == 0) { Error error(process->Halt ()); if (error.Success()) { result.SetStatus (eReturnStatusSuccessFinishResult); // Maybe we should add a "SuspendThreadPlans so we // can halt, and keep in place all the current thread plans. process->GetThreadList().DiscardThreadPlans(); } else { result.AppendErrorWithFormat ("Failed to halt process: %s\n", error.AsCString()); result.SetStatus (eReturnStatusFailed); } } else { result.AppendErrorWithFormat("'%s' takes no arguments:\nUsage: \n", m_cmd_name.c_str(), m_cmd_syntax.c_str()); result.SetStatus (eReturnStatusFailed); } return result.Succeeded(); } }; //------------------------------------------------------------------------- // CommandObjectProcessKill //------------------------------------------------------------------------- class CommandObjectProcessKill : public CommandObject { public: CommandObjectProcessKill (CommandInterpreter &interpreter) : CommandObject (interpreter, "process kill", "Terminate the current process being debugged.", "process kill", eFlagProcessMustBeLaunched) { } ~CommandObjectProcessKill () { } bool Execute (Args& command, CommandReturnObject &result) { Process *process = m_interpreter.GetDebugger().GetExecutionContext().process; if (process == NULL) { result.AppendError ("no process to kill"); result.SetStatus (eReturnStatusFailed); return false; } if (command.GetArgumentCount() == 0) { Error error (process->Destroy()); if (error.Success()) { result.SetStatus (eReturnStatusSuccessFinishResult); } else { result.AppendErrorWithFormat ("Failed to kill process: %s\n", error.AsCString()); result.SetStatus (eReturnStatusFailed); } } else { result.AppendErrorWithFormat("'%s' takes no arguments:\nUsage: \n", m_cmd_name.c_str(), m_cmd_syntax.c_str()); result.SetStatus (eReturnStatusFailed); } return result.Succeeded(); } }; //------------------------------------------------------------------------- // CommandObjectProcessStatus //------------------------------------------------------------------------- class CommandObjectProcessStatus : public CommandObject { public: CommandObjectProcessStatus (CommandInterpreter &interpreter) : CommandObject (interpreter, "process status", "Show the current status and location of executing process.", "process status", 0) { } ~CommandObjectProcessStatus() { } bool Execute ( Args& command, CommandReturnObject &result ) { StreamString &output_stream = result.GetOutputStream(); result.SetStatus (eReturnStatusSuccessFinishNoResult); ExecutionContext exe_ctx(m_interpreter.GetDebugger().GetExecutionContext()); if (exe_ctx.process) { const StateType state = exe_ctx.process->GetState(); if (StateIsStoppedState(state)) { if (state == eStateExited) { int exit_status = exe_ctx.process->GetExitStatus(); const char *exit_description = exe_ctx.process->GetExitDescription(); output_stream.Printf ("Process %d exited with status = %i (0x%8.8x) %s\n", exe_ctx.process->GetID(), exit_status, exit_status, exit_description ? exit_description : ""); } else { output_stream.Printf ("Process %d %s\n", exe_ctx.process->GetID(), StateAsCString (state)); if (exe_ctx.thread == NULL) exe_ctx.thread = exe_ctx.process->GetThreadList().GetThreadAtIndex(0).get(); if (exe_ctx.thread != NULL) { DisplayThreadsInfo (m_interpreter, &exe_ctx, result, true, true); } else { result.AppendError ("No valid thread found in current process."); result.SetStatus (eReturnStatusFailed); } } } else { output_stream.Printf ("Process %d is running.\n", exe_ctx.process->GetID()); } } else { result.AppendError ("No current location or status available."); result.SetStatus (eReturnStatusFailed); } return result.Succeeded(); } }; //------------------------------------------------------------------------- // CommandObjectProcessHandle //------------------------------------------------------------------------- class CommandObjectProcessHandle : public CommandObject { public: class CommandOptions : public Options { public: CommandOptions () : Options () { ResetOptionValues (); } ~CommandOptions () { } Error SetOptionValue (int option_idx, const char *option_arg) { Error error; char short_option = (char) m_getopt_table[option_idx].val; switch (short_option) { case 's': stop = option_arg; break; case 'n': notify = option_arg; break; case 'p': pass = option_arg; break; default: error.SetErrorStringWithFormat("Invalid short option character '%c'.\n", short_option); break; } return error; } void ResetOptionValues () { Options::ResetOptionValues(); stop.clear(); notify.clear(); pass.clear(); } const lldb::OptionDefinition* GetDefinitions () { return g_option_table; } // Options table: Required for subclasses of Options. static lldb::OptionDefinition g_option_table[]; // Instance variables to hold the values for command options. std::string stop; std::string notify; std::string pass; }; CommandObjectProcessHandle (CommandInterpreter &interpreter) : CommandObject (interpreter, "process handle", "Show or update what the process and debugger should do with various signals received from the OS.", NULL) { SetHelpLong ("If no signals are specified, update them all. If no update option is specified, list the current values.\n"); CommandArgumentEntry arg; CommandArgumentData signal_arg; signal_arg.arg_type = eArgTypeUnixSignal; signal_arg.arg_repetition = eArgRepeatStar; arg.push_back (signal_arg); m_arguments.push_back (arg); } ~CommandObjectProcessHandle () { } Options * GetOptions () { return &m_options; } bool VerifyCommandOptionValue (const std::string &option, int &real_value) { bool okay = true; bool success = false; bool tmp_value = Args::StringToBoolean (option.c_str(), false, &success); if (success && tmp_value) real_value = 1; else if (success && !tmp_value) real_value = 0; else { // If the value isn't 'true' or 'false', it had better be 0 or 1. real_value = Args::StringToUInt32 (option.c_str(), 3); if (real_value != 0 && real_value != 1) okay = false; } return okay; } void PrintSignalHeader (Stream &str) { str.Printf ("NAME PASS STOP NOTIFY\n"); str.Printf ("========== ===== ===== ======\n"); } void PrintSignal (Stream &str, int32_t signo, const char *sig_name, UnixSignals &signals) { bool stop; bool suppress; bool notify; str.Printf ("%-10s ", sig_name); if (signals.GetSignalInfo (signo, suppress, stop, notify)) { bool pass = !suppress; str.Printf ("%s %s %s", (pass ? "true " : "false"), (stop ? "true " : "false"), (notify ? "true " : "false")); } str.Printf ("\n"); } void PrintSignalInformation (Stream &str, Args &signal_args, int num_valid_signals, UnixSignals &signals) { PrintSignalHeader (str); if (num_valid_signals > 0) { size_t num_args = signal_args.GetArgumentCount(); for (size_t i = 0; i < num_args; ++i) { int32_t signo = signals.GetSignalNumberFromName (signal_args.GetArgumentAtIndex (i)); if (signo != LLDB_INVALID_SIGNAL_NUMBER) PrintSignal (str, signo, signal_args.GetArgumentAtIndex (i), signals); } } else // Print info for ALL signals { int32_t signo = signals.GetFirstSignalNumber(); while (signo != LLDB_INVALID_SIGNAL_NUMBER) { PrintSignal (str, signo, signals.GetSignalAsCString (signo), signals); signo = signals.GetNextSignalNumber (signo); } } } bool Execute (Args &signal_args, CommandReturnObject &result) { TargetSP target_sp = m_interpreter.GetDebugger().GetSelectedTarget(); if (!target_sp) { result.AppendError ("No current target;" " cannot handle signals until you have a valid target and process.\n"); result.SetStatus (eReturnStatusFailed); return false; } ProcessSP process_sp = target_sp->GetProcessSP(); if (!process_sp) { result.AppendError ("No current process; cannot handle signals until you have a valid process.\n"); result.SetStatus (eReturnStatusFailed); return false; } int stop_action = -1; // -1 means leave the current setting alone int pass_action = -1; // -1 means leave the current setting alone int notify_action = -1; // -1 means leave the current setting alone if (! m_options.stop.empty() && ! VerifyCommandOptionValue (m_options.stop, stop_action)) { result.AppendError ("Invalid argument for command option --stop; must be true or false.\n"); result.SetStatus (eReturnStatusFailed); return false; } if (! m_options.notify.empty() && ! VerifyCommandOptionValue (m_options.notify, notify_action)) { result.AppendError ("Invalid argument for command option --notify; must be true or false.\n"); result.SetStatus (eReturnStatusFailed); return false; } if (! m_options.pass.empty() && ! VerifyCommandOptionValue (m_options.pass, pass_action)) { result.AppendError ("Invalid argument for command option --pass; must be true or false.\n"); result.SetStatus (eReturnStatusFailed); return false; } size_t num_args = signal_args.GetArgumentCount(); UnixSignals &signals = process_sp->GetUnixSignals(); int num_signals_set = 0; if (num_args > 0) { for (size_t i = 0; i < num_args; ++i) { int32_t signo = signals.GetSignalNumberFromName (signal_args.GetArgumentAtIndex (i)); if (signo != LLDB_INVALID_SIGNAL_NUMBER) { // Casting the actions as bools here should be okay, because VerifyCommandOptionValue guarantees // the value is either 0 or 1. if (stop_action != -1) signals.SetShouldStop (signo, (bool) stop_action); if (pass_action != -1) { bool suppress = ! ((bool) pass_action); signals.SetShouldSuppress (signo, suppress); } if (notify_action != -1) signals.SetShouldNotify (signo, (bool) notify_action); ++num_signals_set; } else { result.AppendErrorWithFormat ("Invalid signal name '%s'\n", signal_args.GetArgumentAtIndex (i)); } } } else { // No signal specified, if any command options were specified, update ALL signals. if ((notify_action != -1) || (stop_action != -1) || (pass_action != -1)) { if (m_interpreter.Confirm ("Do you really want to update all the signals?", false)) { int32_t signo = signals.GetFirstSignalNumber(); while (signo != LLDB_INVALID_SIGNAL_NUMBER) { if (notify_action != -1) signals.SetShouldNotify (signo, (bool) notify_action); if (stop_action != -1) signals.SetShouldStop (signo, (bool) stop_action); if (pass_action != -1) { bool suppress = ! ((bool) pass_action); signals.SetShouldSuppress (signo, suppress); } signo = signals.GetNextSignalNumber (signo); } } } } PrintSignalInformation (result.GetOutputStream(), signal_args, num_signals_set, signals); if (num_signals_set > 0) result.SetStatus (eReturnStatusSuccessFinishNoResult); else result.SetStatus (eReturnStatusFailed); return result.Succeeded(); } protected: CommandOptions m_options; }; lldb::OptionDefinition CommandObjectProcessHandle::CommandOptions::g_option_table[] = { { LLDB_OPT_SET_1, false, "stop", 's', required_argument, NULL, 0, eArgTypeBoolean, "Whether or not the process should be stopped if the signal is received." }, { LLDB_OPT_SET_1, false, "notify", 'n', required_argument, NULL, 0, eArgTypeBoolean, "Whether or not the debugger should notify the user if the signal is received." }, { LLDB_OPT_SET_1, false, "pass", 'p', required_argument, NULL, 0, eArgTypeBoolean, "Whether or not the signal should be passed to the process." }, { 0, false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL } }; //------------------------------------------------------------------------- // CommandObjectMultiwordProcess //------------------------------------------------------------------------- CommandObjectMultiwordProcess::CommandObjectMultiwordProcess (CommandInterpreter &interpreter) : CommandObjectMultiword (interpreter, "process", "A set of commands for operating on a process.", "process []") { LoadSubCommand ("attach", CommandObjectSP (new CommandObjectProcessAttach (interpreter))); LoadSubCommand ("launch", CommandObjectSP (new CommandObjectProcessLaunch (interpreter))); LoadSubCommand ("continue", CommandObjectSP (new CommandObjectProcessContinue (interpreter))); LoadSubCommand ("detach", CommandObjectSP (new CommandObjectProcessDetach (interpreter))); LoadSubCommand ("signal", CommandObjectSP (new CommandObjectProcessSignal (interpreter))); LoadSubCommand ("handle", CommandObjectSP (new CommandObjectProcessHandle (interpreter))); LoadSubCommand ("status", CommandObjectSP (new CommandObjectProcessStatus (interpreter))); LoadSubCommand ("interrupt", CommandObjectSP (new CommandObjectProcessInterrupt (interpreter))); LoadSubCommand ("kill", CommandObjectSP (new CommandObjectProcessKill (interpreter))); } CommandObjectMultiwordProcess::~CommandObjectMultiwordProcess () { }