(Older versions of C<load_policy> require you to specify the
name of the policy file).
+=item 3.
+
+Optionally, set the security context for the API. The correct
+security context to use can only be known by inspecting the
+guest. As an example:
+
+ guestfs_setcon (g, "unconfined_u:unconfined_r:unconfined_t:s0");
+
=back
This will work for running commands and editing existing files.
See also L</QEMU WRAPPERS> above.
+=item LIBGUESTFS_TRACE
+
+Set C<LIBGUESTFS_TRACE=1> to enable command traces. This
+has the same effect as calling C<guestfs_set_trace (handle, 1)>.
+
=item TMPDIR
Location of temporary directory, defaults to C</tmp>.