I've extended setgroup test cases can test setgroups16 old system calls. To test, please put attached compat_16.h to ltp/testcases/kernel/syscalls/setgroups; and apply the patch. Signed-off-by: Masatake YAMATO <yamato@redhat.com>.
diff --git a/runtest/syscalls b/runtest/syscalls
index fb17316..6e2c3e7 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -765,9 +765,13 @@
 setegid01 setegid01
 
 setgroups01 setgroups01
+setgroups01_16 setgroups01_16
 setgroups02 setgroups02
+setgroups02_16 setgroups02_16
 setgroups03 setgroups03
+setgroups03_16 setgroups03_16
 setgroups04 setgroups04
+setgroups04_16 setgroups04_16
 
 sethostname01 sethostname01
 sethostname02 sethostname02