如何使用polkit库编译我的C程序？

今天，我尝试使用polkit—一种用于定义和处理允许非特权进程与特权进程对话的策略的应用程序级工具包。为了更好地理解它，我尝试下载以下代码：

#include <polkit/polkit.h>

static gboolean
on_tensec_timeout (gpointer user_data)
{
  GMainLoop *loop = user_data;
  g_print ("Ten seconds has passed. Now exiting.\n");
  g_main_loop_quit (loop);
  return FALSE;
}

static void
check_authorization_cb (PolkitAuthority *authority,
                        GAsyncResult    *res,
                        gpointer         user_data)
{
  GMainLoop *loop = user_data;
  PolkitAuthorizationResult *result;
  GError *error;

  error = NULL;
  result = polkit_authority_check_authorization_finish (authority, res, &error);
  if (error != NULL)
    {
      g_print ("Error checking authorization: %s\n", error->message);
      g_error_free (error);
    }
  else
    {
      const gchar *result_str;
      if (polkit_authorization_result_get_is_authorized (result))
        {
          result_str = "authorized";
        }
      else if (polkit_authorization_result_get_is_challenge (result))
        {
          result_str = "challenge";
        }
      else
        {
          result_str = "not authorized";
        }

      g_print ("Authorization result: %s\n", result_str);
    }

  g_print ("Authorization check has been cancelled and the dialog should now be hidden.\n"
           "This process will exit in ten seconds.\n");
  g_timeout_add (10000, on_tensec_timeout, loop);
}

static gboolean
do_cancel (GCancellable *cancellable)
{
  g_print ("Timer has expired; cancelling authorization check\n");
  g_cancellable_cancel (cancellable);
  return FALSE;
}

int
main (int argc, char *argv[])
{
  pid_t parent_pid;
  const gchar *action_id;
  GMainLoop *loop;
  PolkitSubject *subject;
  PolkitAuthority *authority;
  GCancellable *cancellable;

  g_type_init ();

  if (argc != 2)
    {
      g_printerr ("usage: %s <action_id>\n", argv[0]);
      return 1;
    }
  action_id = argv[1];

  loop = g_main_loop_new (NULL, FALSE);

  authority = polkit_authority_get_sync (NULL, NULL);

  /* Typically mechanisms will use a PolkitSystemBusName since most
   * clients communicate with the mechanism via D-Bus. However for
   * this simple example we use the process id of the calling process.
   *
   * Note that if the parent was reaped we have to be careful not to
   * check if init(1) is authorized (it always is).
   */
  parent_pid = getppid ();
  if (parent_pid == 1)
    {
      g_printerr ("Parent process was reaped by init(1)\n");
      return 1;
    }
  subject = polkit_unix_process_new (parent_pid);

  cancellable = g_cancellable_new ();

  g_print ("Will cancel authorization check in 10 seconds\n");

  /* Set up a 10 second timer to cancel the check */
  g_timeout_add (10 * 1000,
                 (GSourceFunc) do_cancel,
                 cancellable);

  polkit_authority_check_authorization (authority,
                                        subject,
                                        action_id,
                                        NULL, /* PolkitDetails */
                                        POLKIT_CHECK_AUTHORIZATION_FLAGS_ALLOW_USER_INTERACTION,
                                        cancellable,
                                        (GAsyncReadyCallback) check_authorization_cb,
                                        loop);

  g_main_loop_run (loop);

  g_object_unref (authority);
  g_object_unref (subject);
  g_object_unref (cancellable);
  g_main_loop_unref (loop);

  return 0;
}

---

路径

polkit/polkit.h

不在系统包含路径中。确保您已下载并安装，以便可以使用头文件和库文件。

添加此文件后，我解决了问题

pkg配置--cflags glib-2.0 polkit-gobject-1

还有这个

pkg配置--libs glib-2.0 polkit-gobject-1

以这种方式调用gcc编译的命令

gcc `pkg-config --cflags glib-2.0 polkit-gobject-1` -o polkit PolicyKit/example.c `pkg-config --libs glib-2.0`

---

也许您需要帮助编译代码。我使用fedora，默认情况下安装了polkit。

gcc `pkg-config --cflags glib-2.0 polkit-gobject-1` -o polkit PolicyKit/example.c `pkg-config --libs glib-2.0`