I am writing a policy module on Fedora trying to limit running the who command only to specific user. Checkmodule issues following error for my script : Error 'syntax error' at token 'domain_auto_trans' on line 20 But I checked the syntax and there is no typo in it. Here is my whole script. What is the error in it? module who 1.0; require { attribute domain; attribute file_type; attribute exec_type; type sysadm_t; attribute sysadm_r; class process transition; role sysadm_r; } type who_t; typeattribute who_t domain; type who_exec_t; typeattribute who_exec_t file_type; typeattribute who_exec_t exec_type; role sysadm_r types who_t; domain_auto_trans (sysadm_t, who_exec_t, who_t) Another problem is that when I transfer this script to Centos, checkmodule of centos issues other kind of errors. Why this happens? Kinds of errors differ by fedora or centos? -- selinux mailing list selinux@xxxxxxxxxxxxxxxxxxxxxxx http://lists.fedoraproject.org/admin/lists/selinux@xxxxxxxxxxxxxxxxxxxxxxx