Meaning
This defines how domain is attached to process.
Example
{
domain httpd_t;
domain_trans initrc_t /sbin/httpd;
....
Above means that when process(domain: initrc_t) executes
/sbin/httpd, /sbin/httpd runs as httpd_t domain.
Note
Dynamic domain transition can be configured by omitting entry
point. For example,
{
domain httpd_t;
domain_trans initrc_t;
means, dynamic domain transition from initrc_t to httpd_t is allowed.