Method ueventEnumerateFilterDevice

src/Library/DeviceManagerBase.cpp:107–401

  }

  std::string DeviceManagerBase::ueventEnumerateFilterDevice(const std::string& filepath, const struct dirent* direntry)
  {
#if defined(_DIRENT_HAVE_D_TYPE)

    if (direntry->d_type != DT_UNKNOWN) {
      switch (direntry->d_type) {
      case DT_LNK:
        return symlinkPath(filepath);

      case DT_DIR:
        return filepath;

      default:
        return std::string();
      }
    }
    else {
      /*
       * Unknown type. We have to call lstat.
       */
#endif
      struct stat st = {};

      if (lstat(filepath.c_str(), &st) != 0) {
        /*
         * Cannot stat, skip this entry.
         */
        USBGUARD_LOG(Warning) << "lstat(" << filepath << "): errno=" << errno;
        return std::string();
      }

      if (S_ISLNK(st.st_mode)) {
        return symlinkPath(filepath, &st);
      }
      else if (S_ISDIR(st.st_mode)) {
        return filepath;
      }
      else {
        return std::string();
      }

#if defined(_DIRENT_HAVE_D_TYPE)
    }

#endif
  }

  int DeviceManagerBase::ueventOpen()
  {
    int socket_fd = -1;
    USBGUARD_SYSCALL_THROW("UEvent device manager",
      (socket_fd = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_KOBJECT_UEVENT)) < 0);

    try {
      const int optval = 1;
      USBGUARD_SYSCALL_THROW("UEvent device manager",
        setsockopt(socket_fd, SOL_SOCKET, SO_PASSCRED, &optval, sizeof optval) != 0);
      /*