httpd_sys_content_t

[mark]

In the process of trying to get rid of irritating messages, I'm still
trying to find and change the context from default_t. Well, I looked at
/public/htdocs, and notice that's default_t. So, looking at another
server, I see that one has them as httpd_sys_content_t. I try chcon
httpd_sys_content_t /public/htdocs... and chcon: invalid context:
httpd_sys_content_t

CentOS 5.5, current
rpm -qa | grep policy:
selinux-policy-targeted-2.4.6-279.el5_5.1
checkpolicy-1.33.1-6.el5
selinux-policy-2.4.6-279.el5_5.1
policycoreutils-1.33.12-14.8.el5

The other server is the same. Clues for the poor?

mark