device-mapper-dmsetup-deps-export.patch

   1 diff -ur LVM2.2.03.02.orig/libdm/dm-tools/dmsetup.c LVM2.2.03.02/libdm/dm-tools/dmsetup.c
   2 --- LVM2.2.03.02.orig/libdm/dm-tools/dmsetup.c  2019-03-22 17:08:18.345000000 +0100
   3 +++ LVM2.2.03.02/libdm/dm-tools/dmsetup.c       2019-03-22 17:09:27.125000000 +0100
   4 @@ -2562,6 +2562,7 @@
   5         const char *name = NULL;
   6         const char *uuid = NULL;
   7         struct dm_info info;
   8 +       struct dm_deps *deps;
   9
  10         if (names)
  11                 name = names->name;
  12 @@ -2631,6 +2632,28 @@
  13                 printf("\n");
  14         }
  15
  16 +       dm_task_destroy(dmt);
  17 +
  18 +       if (!(dmt = dm_task_create(DM_DEVICE_DEPS)))
  19 +               goto out;
  20 +
  21 +       name = NULL;
  22 +       if (names)
  23 +               name = names->name;
  24 +       else if (argc == 2)
  25 +               name = argv[1];
  26 +
  27 +       if (!_set_task_device(dmt, name, 0))
  28 +               goto out;
  29 +
  30 +       if (!dm_task_run(dmt))
  31 +               goto out;
  32 +
  33 +       if (!(deps = dm_task_get_deps(dmt)))
  34 +               goto out;
  35 +
  36 +       printf("DM_DEPS=%d\n", deps->count);
  37 +
  38         r = 1;
  39        out:
  40         if (dmt)