src/udev/gudev/gjs-example.js

   1 #!/usr/bin/env gjs-console
   2
   3 // This currently depends on the following patches to gjs
   4 //
   5 // http://bugzilla.gnome.org/show_bug.cgi?id=584558
   6 // http://bugzilla.gnome.org/show_bug.cgi?id=584560
   7 // http://bugzilla.gnome.org/show_bug.cgi?id=584568
   8
   9 const GUdev = imports.gi.GUdev;
  10 const Mainloop = imports.mainloop;
  11
  12 function print_device (device) {
  13   print ("  subsystem:             " + device.get_subsystem ());
  14   print ("  devtype:               " + device.get_devtype ());
  15   print ("  name:                  " + device.get_name ());
  16   print ("  number:                " + device.get_number ());
  17   print ("  sysfs_path:            " + device.get_sysfs_path ());
  18   print ("  driver:                " + device.get_driver ());
  19   print ("  action:                " + device.get_action ());
  20   print ("  seqnum:                " + device.get_seqnum ());
  21   print ("  device type:           " + device.get_device_type ());
  22   print ("  device number:         " + device.get_device_number ());
  23   print ("  device file:           " + device.get_device_file ());
  24   print ("  device file symlinks:  " + device.get_device_file_symlinks ());
  25   print ("  foo: " + device.get_sysfs_attr_as_strv ("stat"));
  26   var keys = device.get_property_keys ();
  27   for (var n = 0; n < keys.length; n++) {
  28     print ("    " + keys[n] + "=" + device.get_property (keys[n]));
  29   }
  30 }
  31
  32 function on_uevent (client, action, device) {
  33   print ("action " + action + " on device " + device.get_sysfs_path());
  34   print_device (device);
  35   print ("");
  36 }
  37
  38 var client = new GUdev.Client ({subsystems: ["block", "usb/usb_interface"]});
  39 client.connect ("uevent", on_uevent);
  40
  41 var block_devices = client.query_by_subsystem ("block");
  42 for (var n = 0; n < block_devices.length; n++) {
  43   print ("block device: " + block_devices[n].get_device_file ());
  44 }
  45
  46 var d;
  47
  48 d = client.query_by_device_number (GUdev.DeviceType.BLOCK, 0x0810);
  49 if (d == null) {
  50   print ("query_by_device_number 0x810 -> null");
  51 } else {
  52   print ("query_by_device_number 0x810 -> " + d.get_device_file ());
  53   var dd = d.get_parent_with_subsystem ("usb", null);
  54   print_device (dd);
  55   print ("--------------------------------------------------------------------------");
  56   while (d != null) {
  57     print_device (d);
  58     print ("");
  59     d = d.get_parent ();
  60   }
  61 }
  62
  63 d = client.query_by_sysfs_path ("/sys/block/sda/sda1");
  64 print ("query_by_sysfs_path (\"/sys/block/sda1\") -> " + d.get_device_file ());
  65
  66 d = client.query_by_subsystem_and_name ("block", "sda2");
  67 print ("query_by_subsystem_and_name (\"block\", \"sda2\") -> " + d.get_device_file ());
  68
  69 d = client.query_by_device_file ("/dev/sda");
  70 print ("query_by_device_file (\"/dev/sda\") -> " + d.get_device_file ());
  71
  72 d = client.query_by_device_file ("/dev/block/8:0");
  73 print ("query_by_device_file (\"/dev/block/8:0\") -> " + d.get_device_file ());
  74
  75 Mainloop.run('udev-example');