| //===-- HostProcessPosix.cpp ------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "lldb/Host/Host.h" |
| #include "lldb/Host/FileSystem.h" |
| #include "lldb/Host/posix/HostProcessPosix.h" |
| |
| #include "llvm/ADT/STLExtras.h" |
| |
| #include <csignal> |
| #include <limits.h> |
| #include <unistd.h> |
| |
| using namespace lldb_private; |
| |
| namespace { |
| const int kInvalidPosixProcess = 0; |
| } |
| |
| HostProcessPosix::HostProcessPosix() |
| : HostNativeProcessBase(kInvalidPosixProcess) {} |
| |
| HostProcessPosix::HostProcessPosix(lldb::process_t process) |
| : HostNativeProcessBase(process) {} |
| |
| HostProcessPosix::~HostProcessPosix() {} |
| |
| Status HostProcessPosix::Signal(int signo) const { |
| if (m_process == kInvalidPosixProcess) { |
| Status error; |
| error.SetErrorString("HostProcessPosix refers to an invalid process"); |
| return error; |
| } |
| |
| return HostProcessPosix::Signal(m_process, signo); |
| } |
| |
| Status HostProcessPosix::Signal(lldb::process_t process, int signo) { |
| Status error; |
| |
| if (-1 == ::kill(process, signo)) |
| error.SetErrorToErrno(); |
| |
| return error; |
| } |
| |
| Status HostProcessPosix::Terminate() { return Signal(SIGKILL); } |
| |
| Status HostProcessPosix::GetMainModule(FileSpec &file_spec) const { |
| Status error; |
| |
| // Use special code here because proc/[pid]/exe is a symbolic link. |
| char link_path[PATH_MAX]; |
| if (snprintf(link_path, PATH_MAX, "/proc/%" PRIu64 "/exe", m_process) != 1) { |
| error.SetErrorString("Unable to build /proc/<pid>/exe string"); |
| return error; |
| } |
| |
| error = FileSystem::Readlink(FileSpec{link_path, false}, file_spec); |
| if (!error.Success()) |
| return error; |
| |
| // If the binary has been deleted, the link name has " (deleted)" appended. |
| // Remove if there. |
| if (file_spec.GetFilename().GetStringRef().endswith(" (deleted)")) { |
| const char *filename = file_spec.GetFilename().GetCString(); |
| static const size_t deleted_len = strlen(" (deleted)"); |
| const size_t len = file_spec.GetFilename().GetLength(); |
| file_spec.GetFilename().SetCStringWithLength(filename, len - deleted_len); |
| } |
| return error; |
| } |
| |
| lldb::pid_t HostProcessPosix::GetProcessId() const { return m_process; } |
| |
| bool HostProcessPosix::IsRunning() const { |
| if (m_process == kInvalidPosixProcess) |
| return false; |
| |
| // Send this process the null signal. If it succeeds the process is running. |
| Status error = Signal(0); |
| return error.Success(); |
| } |
| |
| HostThread HostProcessPosix::StartMonitoring( |
| const Host::MonitorChildProcessCallback &callback, bool monitor_signals) { |
| return Host::StartMonitoringChildProcess(callback, m_process, |
| monitor_signals); |
| } |