allow iptables to isatty()

Test: builds, atest
Bug: 143044679
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Ie48e631b3650502f3c9d6a649c48e2ed7a9e9923
diff --git a/vendor/qcom/common/netutils_wrapper.te b/vendor/qcom/common/netutils_wrapper.te
index 0653256..0b58276 100644
--- a/vendor/qcom/common/netutils_wrapper.te
+++ b/vendor/qcom/common/netutils_wrapper.te
@@ -1,6 +1,7 @@
 # For netutils to be able to write their stdout stderr to the pipes opened by netmgrd
 allow netutils_wrapper netmgrd:fd use;
-allow netutils_wrapper netmgrd:fifo_file { getattr read write append };
+allow netutils_wrapper netmgrd:fifo_file { getattr ioctl read write append };
+allowxperm netutils_wrapper netmgrd:fifo_file ioctl { TCGETS };
 
 userdebug_or_eng(`
   allow netutils_wrapper diag_device:chr_file rw_file_perms;