Example #1
0
/**
 * \param[in] argc argument count
 * \param[in] argv argument array
 * \return 0 on success, 1 on error
 * 
 * \attention In daemon mode, it finishes immediately.
 */
int main(int argc, char** argv)
{
  openlog(INCRON_DAEMON_NAME, INCRON_LOG_OPTS, INCRON_LOG_FACIL);
  
  syslog(LOG_NOTICE, "starting service (version %s, built on %s %s)", INCRON_VERSION, __DATE__, __TIME__);
  
  try {
    Inotify in;
    in.SetNonBlock(true);
    
    EventDispatcher ed(&in);
    
    try {
      load_tables(&in, &ed);
    } catch (InotifyException e) {
      int err = e.GetErrorNumber();
      syslog(LOG_CRIT, "%s: (%i) %s", e.GetMessage().c_str(), err, strerror(err));
      syslog(LOG_NOTICE, "stopping service");
      closelog();
      return 1;
    }
    
    signal(SIGTERM, on_signal);
    signal(SIGINT, on_signal);
    signal(SIGCHLD, on_signal);
    
    if (DAEMON)
      daemon(0, 0);
    
    uint32_t wm = IN_CLOSE_WRITE | IN_DELETE | IN_MOVE | IN_DELETE_SELF | IN_UNMOUNT;
    InotifyWatch watch(INCRON_TABLE_BASE, wm);
    in.Add(watch);
    
    syslog(LOG_NOTICE, "ready to process filesystem events");
    
    InotifyEvent e;
    
    struct pollfd pfd;
    pfd.fd = in.GetDescriptor();
    pfd.events = (short) POLLIN;
    pfd.revents = (short) 0;
    
    while (!g_fFinish) {
      
      int res = poll(&pfd, 1, -1);
      if (res > 0) {
        in.WaitForEvents(true);
      }
      else if (res < 0) {
        if (errno != EINTR)
          throw InotifyException("polling failed", errno, NULL);
      }
      
      UserTable::FinishDone();
      
      while (in.GetEvent(e)) {
        
        if (e.GetWatch() == &watch) {
          if (e.IsType(IN_DELETE_SELF) || e.IsType(IN_UNMOUNT)) {
            syslog(LOG_CRIT, "base directory destroyed, exitting");
            g_fFinish = true;
          }
          else if (!e.GetName().empty()) {
            SUT_MAP::iterator it = g_ut.find(e.GetName());
            if (it != g_ut.end()) {
              UserTable* pUt = (*it).second;
              if (e.IsType(IN_CLOSE_WRITE) || e.IsType(IN_MOVED_TO)) {
                syslog(LOG_INFO, "table for user %s changed, reloading", e.GetName().c_str());
                pUt->Dispose();
                pUt->Load();
              }
              else if (e.IsType(IN_MOVED_FROM) || e.IsType(IN_DELETE)) {
                syslog(LOG_INFO, "table for user %s destroyed, removing", e.GetName().c_str());
                delete pUt;
                g_ut.erase(it);
              }
            }
            else if (e.IsType(IN_CLOSE_WRITE) || e.IsType(IN_MOVED_TO)) {
              if (check_user(e.GetName().c_str())) {
                syslog(LOG_INFO, "table for user %s created, loading", e.GetName().c_str());
                UserTable* pUt = new UserTable(&in, &ed, e.GetName());
                g_ut.insert(SUT_MAP::value_type(e.GetName(), pUt));
                pUt->Load();
              }
            }
          }
        }
        else {
          ed.DispatchEvent(e);
        }
      }
    }
  } catch (InotifyException e) {
    int err = e.GetErrorNumber();
    syslog(LOG_CRIT, "*** unhandled exception occurred ***");
    syslog(LOG_CRIT, "  %s", e.GetMessage().c_str());
    syslog(LOG_CRIT, "  error: (%i) %s", err, strerror(err));
  }

  syslog(LOG_NOTICE, "stopping service");
  
  closelog();
  
  return 0;
}
Example #2
-1
void EventDispatcher::Register(UserTable* pTab)
{
  if (pTab != NULL) {
    Inotify* pIn = pTab->GetInotify();
    if (pIn != NULL) {
      int fd = pIn->GetDescriptor();
      if (fd != -1) {
        m_maps.insert(FDUT_MAP::value_type(fd, pTab));
        Rebuild();
      }
    }
  }
}