sepolgen: Make sepolgen-ifgen output deterministic with Python>=3.3

Since Python 3.3, dictionary hashes are randomized and iterating over
them is no longer deterministic.  This makes it difficult to compare
outputs of sepolgen-ifgen command.

Make sepolgen-ifgen deterministic again with Python>=3.3 by always
sorting the dictonaries and sets which are used to produce output.

Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>

sepolgen/src/sepolgen/access.py

@@ -128,7 +128,7 @@ class AccessVector(util.Comparison):
         is represented in a list.
         """
         l = [self.src_type, self.tgt_type, self.obj_class]
-        l.extend(self.perms)
+        l.extend(sorted(self.perms))
         return l
 
     def __str__(self):

sepolgen/src/sepolgen/interfaces.py

@@ -341,12 +341,12 @@ class InterfaceSet:
             self.output.write(str + "\n")
 
     def to_file(self, fd):
-        for iv in self.interfaces.values():
+        for iv in sorted(self.interfaces.values(), key=lambda x: x.name):
             fd.write("[InterfaceVector %s " % iv.name)
-            for param in iv.params.values():
+            for param in sorted(iv.params.values(), key=lambda x: x.name):
                 fd.write("%s:%s " % (param.name, refpolicy.field_to_str[param.type]))
             fd.write("]\n")
-            avl = iv.access.to_list()
+            avl = sorted(iv.access.to_list())
             for av in avl:
                 fd.write(",".join(av))
                 fd.write("\n")

sepolgen/src/sepolgen/refpolicy.py

@@ -251,10 +251,10 @@ class IdSet(set):
         self.compliment = False
 
     def to_space_str(self):
-        return list_to_space_str(self)
+        return list_to_space_str(sorted(self))
 
     def to_comma_str(self):
-        return list_to_comma_str(self)
+        return list_to_comma_str(sorted(self))
 
 class SecurityContext(Leaf):
     """An SELinux security context with optional MCS / MLS fields."""