Function prison_flag

freebsd/kern/kern_jail.c:2630–2635

* See if a prison has the specific flag set. The prison should be locked, * unless checking for flags that are only set at jail creation (such as * PR_IP4 and PR_IP6), or only the single bit is examined, without regard * to any other prison data. */

 * to any other prison data.
 */
int
prison_flag(struct ucred *cred, unsigned flag)
{

	return (cred->cr_prison->pr_flags & flag);
}

int
prison_allow(struct ucred *cred, unsigned flag)