Postulates

• All shared resources must be restored by the task with the least PID to avoid deadlocks.
• No operations with file paths in restorer blob -- task has restored it's fs (cwd and root) and may see different tree.
• In "dump" code any fork()+exec() should be done using the cr_system() helper not to interfere with victim task tracing.
• To keep backward compatibility on protobuf image files, follow those rules (short notes from protobuf messages updating guide):
  • Don't change the numeric tags for any existing fields.
  • Any new fields that you add should be optional or repeated.
  • Non-required fields can be removed, as long as the tag number is not used again in your updated message type.