Examples

Examples

• Example Function to integrate the mainloop into glibs mainloop

      void main_loop(DBusConnection* dbus_connection, void *user_data)
      {
          dbus_connection_setup_with_g_main(dbus_connection, NULL);
          return;
      }
  

• Callback function that will be called, if volume was mounted

      void volume_mounted(const char* udi, const char* mntpnt, void *user_data)
      {
          printf("volume_mounted('%s', '%s', 0x%p) called\n", udi, mntpnt, user_data);
          return;
      }
  

• Callback function that will be called, if volume was unmounted

      void volume_unmounted(const char* udi, const char* mntpnt, void *user_data)
      {
          printf("volume_unmounted('%s', '%s', 0x%p) called\n", udi, mntpnt, user_data);
          return;
      }
  

• Define the callback functions, for later use

      LIBMNTFUNCS mnt_functions = {   main_loop,
                                              volume_mounted, 
                                              volume_unmounted};
  

• Example of main() function from lsmnt.c

      int main(int argc, char* argv[])
      {
          GMainLoop* loop;
          int num_volumes=0;
          char **data = NULL;
          int i=0;
          char *udi = NULL;
          char *mntpnt = NULL;
      
          // print version info
          fprintf(stderr, "lsmnt v" PACKAGE_VERSION "\n");
          
          // get glib main loop
          loop = g_main_loop_new (NULL, FALSE);
          
          // initialize mnt library
          if (mnt_init(&mnt_functions, NULL) == -1) {
              fprintf(stderr, "error: mnt_init failed\n");
              exit(1);
          }
      
          // get all data
          data = mnt_get_all_volumes(&num_volumes);
          if (data != NULL) {
              for (i=0; i<num_volumes; i++) {
                  udi = data[i];
                  if (udi != NULL) {
                      printf("volume%d = '%s'\n", i, udi);
                      // get the mount point
                      mntpnt = mnt_get_mntpnt(udi);
                      if (mntpnt != NULL) {
                          printf("    -> mntpnt = '%s'\n", mntpnt);
                          free(mntpnt);
                          mntpnt = NULL;
                      }
                      free(udi);
                      udi = NULL;
                  }
              }
              free(data);
              data = NULL;
              num_volumes = 0;
          }
          
          // start program
          g_main_loop_run(loop);
          
          // free libraries resources
          mnt_quit();
          
          // exit
          return 0;
      }
  

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