I cannot change my shell context

hi , every body ,I install selinux-policy-targeted in my F11,and run in enforce mode. now I want to change selinux context of /tmp/test,but failed.I thought current shell domain was unconfined_t. then I intend to change my shell context to root:sysadm_r: sysadm_t ,but also failed. my project team plan to develop selinux policy for our system based on selinux-policy.src.rpm. I guess is this package have not been developed? If it has been developed ,why I cannot change to sysadm_r: sysadm_t? ---------------------------------------------------------------------------- [root@localhost ~]# ls -lZ /tmp/testselinux root root unconfined_u:object_r:user_t:user_tmp_t: s0 /tmp/testselinux [root@localhost ~]#chcon unconfined_u:object_r:mytest_t /tmp/testselinux chcon:failed to change context of '/tmp/testselinux' to 'unconfined_u:object_r:testselinux: s0 : permission denied ## here mytest_t defined in myapp.pp,which has successfully loaded by "semodule -i myapp.pp" [root@localhost ~]# newrole -r sysadm_r -t sysadm_t unconfined_u:unconfined_r:unconfined_t: s0 is not valid context [root@localhost ~]# semanage login -m -s root -r s0-s0:c0.c1023 root after reboot, graphic terminal cannot run. audit says that system_u:system_r: xdm_t require "read" permission for system_u:object_r:httpd_sys_content_t. [root@localhost ~]# id context= root:unconfined_r:unconfined_t: s0-s0:c0-c1023 [root@localhost ~]# newrole -r sysadm_r -t sysadm_t failed to exec shell: permission denied 2009-09-02 zheyeung