527 lines
17 KiB
C++
527 lines
17 KiB
C++
//===-- ProcessLaunchInfo.cpp -----------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Host/Config.h"
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#include "lldb/Core/Debugger.h"
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#include "lldb/Core/Log.h"
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#include "lldb/Target/ProcessLaunchInfo.h"
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#include "lldb/Target/FileAction.h"
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#include "lldb/Target/Target.h"
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#if !defined(_WIN32)
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#include <limits.h>
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#endif
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using namespace lldb;
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using namespace lldb_private;
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//----------------------------------------------------------------------------
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// ProcessLaunchInfo member functions
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//----------------------------------------------------------------------------
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ProcessLaunchInfo::ProcessLaunchInfo () :
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ProcessInfo(),
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m_working_dir (),
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m_plugin_name (),
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m_flags (0),
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m_file_actions (),
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m_pty (new lldb_utility::PseudoTerminal),
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m_resume_count (0),
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m_monitor_callback (NULL),
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m_monitor_callback_baton (NULL),
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m_monitor_signals (false),
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m_listener_sp (),
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m_hijack_listener_sp ()
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{
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}
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ProcessLaunchInfo::ProcessLaunchInfo(const char *stdin_path, const char *stdout_path, const char *stderr_path,
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const char *working_directory, uint32_t launch_flags) :
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ProcessInfo(),
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m_working_dir(),
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m_plugin_name(),
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m_flags(launch_flags),
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m_file_actions(),
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m_pty(new lldb_utility::PseudoTerminal),
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m_resume_count(0),
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m_monitor_callback(NULL),
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m_monitor_callback_baton(NULL),
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m_monitor_signals(false),
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m_listener_sp (),
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m_hijack_listener_sp()
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{
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if (stdin_path)
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{
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FileAction file_action;
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const bool read = true;
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const bool write = false;
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if (file_action.Open(STDIN_FILENO, stdin_path, read, write))
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AppendFileAction (file_action);
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}
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if (stdout_path)
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{
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FileAction file_action;
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const bool read = false;
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const bool write = true;
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if (file_action.Open(STDOUT_FILENO, stdout_path, read, write))
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AppendFileAction (file_action);
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}
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if (stderr_path)
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{
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FileAction file_action;
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const bool read = false;
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const bool write = true;
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if (file_action.Open(STDERR_FILENO, stderr_path, read, write))
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AppendFileAction (file_action);
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}
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if (working_directory)
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SetWorkingDirectory(working_directory);
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}
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bool
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ProcessLaunchInfo::AppendCloseFileAction (int fd)
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{
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FileAction file_action;
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if (file_action.Close (fd))
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{
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AppendFileAction (file_action);
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return true;
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}
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return false;
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}
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bool
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ProcessLaunchInfo::AppendDuplicateFileAction (int fd, int dup_fd)
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{
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FileAction file_action;
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if (file_action.Duplicate (fd, dup_fd))
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{
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AppendFileAction (file_action);
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return true;
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}
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return false;
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}
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bool
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ProcessLaunchInfo::AppendOpenFileAction (int fd, const char *path, bool read, bool write)
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{
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FileAction file_action;
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if (file_action.Open (fd, path, read, write))
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{
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AppendFileAction (file_action);
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return true;
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}
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return false;
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}
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bool
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ProcessLaunchInfo::AppendSuppressFileAction (int fd, bool read, bool write)
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{
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FileAction file_action;
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if (file_action.Open (fd, "/dev/null", read, write))
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{
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AppendFileAction (file_action);
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return true;
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}
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return false;
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}
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const FileAction *
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ProcessLaunchInfo::GetFileActionAtIndex(size_t idx) const
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{
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if (idx < m_file_actions.size())
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return &m_file_actions[idx];
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return NULL;
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}
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const FileAction *
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ProcessLaunchInfo::GetFileActionForFD(int fd) const
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{
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for (size_t idx=0, count=m_file_actions.size(); idx < count; ++idx)
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{
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if (m_file_actions[idx].GetFD () == fd)
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return &m_file_actions[idx];
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}
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return NULL;
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}
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const char *
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ProcessLaunchInfo::GetWorkingDirectory () const
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{
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if (m_working_dir.empty())
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return NULL;
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return m_working_dir.c_str();
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}
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void
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ProcessLaunchInfo::SetWorkingDirectory (const char *working_dir)
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{
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if (working_dir && working_dir[0])
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m_working_dir.assign (working_dir);
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else
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m_working_dir.clear();
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}
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const char *
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ProcessLaunchInfo::GetProcessPluginName () const
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{
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if (m_plugin_name.empty())
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return NULL;
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return m_plugin_name.c_str();
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}
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void
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ProcessLaunchInfo::SetProcessPluginName (const char *plugin)
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{
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if (plugin && plugin[0])
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m_plugin_name.assign (plugin);
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else
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m_plugin_name.clear();
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}
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const FileSpec &
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ProcessLaunchInfo::GetShell () const
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{
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return m_shell;
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}
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void
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ProcessLaunchInfo::SetShell (const FileSpec &shell)
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{
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m_shell = shell;
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if (m_shell)
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{
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m_shell.ResolveExecutableLocation();
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m_flags.Set (lldb::eLaunchFlagLaunchInShell);
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}
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else
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m_flags.Clear (lldb::eLaunchFlagLaunchInShell);
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}
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void
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ProcessLaunchInfo::SetLaunchInSeparateProcessGroup (bool separate)
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{
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if (separate)
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m_flags.Set(lldb::eLaunchFlagLaunchInSeparateProcessGroup);
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else
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m_flags.Clear (lldb::eLaunchFlagLaunchInSeparateProcessGroup);
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}
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void
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ProcessLaunchInfo::SetShellExpandArguments (bool expand)
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{
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if (expand)
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m_flags.Set(lldb::eLaunchFlagShellExpandArguments);
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else
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m_flags.Clear(lldb::eLaunchFlagShellExpandArguments);
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}
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void
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ProcessLaunchInfo::Clear ()
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{
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ProcessInfo::Clear();
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m_working_dir.clear();
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m_plugin_name.clear();
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m_shell.Clear();
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m_flags.Clear();
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m_file_actions.clear();
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m_resume_count = 0;
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m_listener_sp.reset();
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m_hijack_listener_sp.reset();
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}
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void
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ProcessLaunchInfo::SetMonitorProcessCallback (Host::MonitorChildProcessCallback callback,
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void *baton,
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bool monitor_signals)
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{
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m_monitor_callback = callback;
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m_monitor_callback_baton = baton;
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m_monitor_signals = monitor_signals;
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}
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bool
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ProcessLaunchInfo::MonitorProcess () const
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{
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if (m_monitor_callback && ProcessIDIsValid())
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{
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Host::StartMonitoringChildProcess (m_monitor_callback,
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m_monitor_callback_baton,
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GetProcessID(),
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m_monitor_signals);
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return true;
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}
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return false;
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}
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void
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ProcessLaunchInfo::SetDetachOnError (bool enable)
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{
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if (enable)
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m_flags.Set(lldb::eLaunchFlagDetachOnError);
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else
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m_flags.Clear(lldb::eLaunchFlagDetachOnError);
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}
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void
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ProcessLaunchInfo::FinalizeFileActions (Target *target, bool default_to_use_pty)
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{
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Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS));
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// If nothing for stdin or stdout or stderr was specified, then check the process for any default
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// settings that were set with "settings set"
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if (GetFileActionForFD(STDIN_FILENO) == NULL ||
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GetFileActionForFD(STDOUT_FILENO) == NULL ||
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GetFileActionForFD(STDERR_FILENO) == NULL)
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{
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if (log)
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log->Printf ("ProcessLaunchInfo::%s at least one of stdin/stdout/stderr was not set, evaluating default handling",
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__FUNCTION__);
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if (m_flags.Test(eLaunchFlagDisableSTDIO))
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{
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if (log)
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log->Printf ("ProcessLaunchInfo::%s eLaunchFlagDisableSTDIO set, adding suppression action for stdin, stdout and stderr",
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__FUNCTION__);
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AppendSuppressFileAction (STDIN_FILENO , true, false);
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AppendSuppressFileAction (STDOUT_FILENO, false, true);
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AppendSuppressFileAction (STDERR_FILENO, false, true);
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}
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else
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{
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// Check for any values that might have gotten set with any of:
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// (lldb) settings set target.input-path
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// (lldb) settings set target.output-path
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// (lldb) settings set target.error-path
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FileSpec in_path;
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FileSpec out_path;
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FileSpec err_path;
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if (target)
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{
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// Only override with the target settings if we don't already have
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// an action for in, out or error
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if (GetFileActionForFD(STDIN_FILENO) == NULL)
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in_path = target->GetStandardInputPath();
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if (GetFileActionForFD(STDOUT_FILENO) == NULL)
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out_path = target->GetStandardOutputPath();
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if (GetFileActionForFD(STDERR_FILENO) == NULL)
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err_path = target->GetStandardErrorPath();
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}
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if (log)
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log->Printf ("ProcessLaunchInfo::%s target stdin='%s', target stdout='%s', stderr='%s'",
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__FUNCTION__,
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in_path ? in_path.GetPath().c_str () : "<null>",
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out_path ? out_path.GetPath().c_str () : "<null>",
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err_path ? err_path.GetPath().c_str () : "<null>");
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char path[PATH_MAX];
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if (in_path && in_path.GetPath(path, sizeof(path)))
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{
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AppendOpenFileAction(STDIN_FILENO, path, true, false);
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if (log)
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log->Printf ("ProcessLaunchInfo::%s appended stdin open file action for %s",
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__FUNCTION__,
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in_path.GetPath().c_str ());
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}
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if (out_path && out_path.GetPath(path, sizeof(path)))
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{
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AppendOpenFileAction(STDOUT_FILENO, path, false, true);
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if (log)
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log->Printf ("ProcessLaunchInfo::%s appended stdout open file action for %s",
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__FUNCTION__,
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out_path.GetPath().c_str ());
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}
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if (err_path && err_path.GetPath(path, sizeof(path)))
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{
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if (log)
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log->Printf ("ProcessLaunchInfo::%s appended stderr open file action for %s",
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__FUNCTION__,
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err_path.GetPath().c_str ());
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AppendOpenFileAction(STDERR_FILENO, path, false, true);
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}
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if (default_to_use_pty && (!in_path || !out_path || !err_path))
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{
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if (log)
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log->Printf ("ProcessLaunchInfo::%s default_to_use_pty is set, and at least one stdin/stderr/stdout is unset, so generating a pty to use for it",
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__FUNCTION__);
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int open_flags = O_RDWR | O_NOCTTY;
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#if !defined(_MSC_VER)
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// We really shouldn't be specifying platform specific flags
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// that are intended for a system call in generic code. But
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// this will have to do for now.
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open_flags |= O_CLOEXEC;
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#endif
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if (m_pty->OpenFirstAvailableMaster(open_flags, NULL, 0))
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{
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const char *slave_path = m_pty->GetSlaveName(NULL, 0);
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// Only use the slave tty if we don't have anything specified for
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// input and don't have an action for stdin
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if (!in_path && GetFileActionForFD(STDIN_FILENO) == NULL)
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{
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AppendOpenFileAction(STDIN_FILENO, slave_path, true, false);
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}
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// Only use the slave tty if we don't have anything specified for
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// output and don't have an action for stdout
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if (!out_path && GetFileActionForFD(STDOUT_FILENO) == NULL)
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{
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AppendOpenFileAction(STDOUT_FILENO, slave_path, false, true);
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}
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// Only use the slave tty if we don't have anything specified for
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// error and don't have an action for stderr
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if (!err_path && GetFileActionForFD(STDERR_FILENO) == NULL)
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{
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AppendOpenFileAction(STDERR_FILENO, slave_path, false, true);
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}
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}
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}
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}
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}
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}
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bool
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ProcessLaunchInfo::ConvertArgumentsForLaunchingInShell (Error &error,
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bool localhost,
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bool will_debug,
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bool first_arg_is_full_shell_command,
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int32_t num_resumes)
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{
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error.Clear();
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if (GetFlags().Test (eLaunchFlagLaunchInShell))
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{
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if (m_shell)
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{
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std::string shell_executable = m_shell.GetPath();
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const char **argv = GetArguments().GetConstArgumentVector ();
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if (argv == NULL || argv[0] == NULL)
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return false;
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Args shell_arguments;
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std::string safe_arg;
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shell_arguments.AppendArgument (shell_executable.c_str());
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const llvm::Triple &triple = GetArchitecture().GetTriple();
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if (triple.getOS() == llvm::Triple::Win32 && !triple.isWindowsCygwinEnvironment())
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shell_arguments.AppendArgument("/C");
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else
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shell_arguments.AppendArgument("-c");
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StreamString shell_command;
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if (will_debug)
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{
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// Add a modified PATH environment variable in case argv[0]
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// is a relative path.
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const char *argv0 = argv[0];
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FileSpec arg_spec(argv0, false);
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if (arg_spec.IsRelativeToCurrentWorkingDirectory())
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{
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// We have a relative path to our executable which may not work if
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// we just try to run "a.out" (without it being converted to "./a.out")
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const char *working_dir = GetWorkingDirectory();
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// Be sure to put quotes around PATH's value in case any paths have spaces...
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std::string new_path("PATH=\"");
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const size_t empty_path_len = new_path.size();
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if (working_dir && working_dir[0])
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{
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new_path += working_dir;
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}
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else
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{
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char current_working_dir[PATH_MAX];
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const char *cwd = getcwd(current_working_dir, sizeof(current_working_dir));
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if (cwd && cwd[0])
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new_path += cwd;
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}
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const char *curr_path = getenv("PATH");
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if (curr_path)
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{
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if (new_path.size() > empty_path_len)
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new_path += ':';
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new_path += curr_path;
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}
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new_path += "\" ";
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shell_command.PutCString(new_path.c_str());
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}
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if (triple.getOS() != llvm::Triple::Win32 || triple.isWindowsCygwinEnvironment())
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shell_command.PutCString("exec");
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// Only Apple supports /usr/bin/arch being able to specify the architecture
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if (GetArchitecture().IsValid() && // Valid architecture
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GetArchitecture().GetTriple().getVendor() == llvm::Triple::Apple && // Apple only
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GetArchitecture().GetCore() != ArchSpec::eCore_x86_64_x86_64h) // Don't do this for x86_64h
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{
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shell_command.Printf(" /usr/bin/arch -arch %s", GetArchitecture().GetArchitectureName());
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// Set the resume count to 2:
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// 1 - stop in shell
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// 2 - stop in /usr/bin/arch
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// 3 - then we will stop in our program
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SetResumeCount(num_resumes + 1);
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}
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else
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{
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// Set the resume count to 1:
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// 1 - stop in shell
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// 2 - then we will stop in our program
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SetResumeCount(num_resumes);
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}
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}
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if (first_arg_is_full_shell_command)
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{
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// There should only be one argument that is the shell command itself to be used as is
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if (argv[0] && !argv[1])
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shell_command.Printf("%s", argv[0]);
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else
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return false;
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}
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else
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{
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for (size_t i=0; argv[i] != NULL; ++i)
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{
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const char *arg = Args::GetShellSafeArgument (argv[i], safe_arg);
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shell_command.Printf(" %s", arg);
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}
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}
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shell_arguments.AppendArgument (shell_command.GetString().c_str());
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m_executable = m_shell;
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m_arguments = shell_arguments;
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return true;
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}
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else
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{
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error.SetErrorString ("invalid shell path");
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}
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}
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else
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{
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error.SetErrorString ("not launching in shell");
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}
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return false;
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}
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Listener &
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ProcessLaunchInfo::GetListenerForProcess (Debugger &debugger)
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{
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if (m_listener_sp)
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return *m_listener_sp;
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else
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return debugger.GetListener();
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}
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