Function getcredhostname

freebsd/kern/kern_jail.c:3109–3122

* Return the correct hostname (domainname, et al) for the passed credential. */

 * Return the correct hostname (domainname, et al) for the passed credential.
 */
void
getcredhostname(struct ucred *cred, char *buf, size_t size)
{
	struct prison *pr;

	/*
	 * A NULL credential can be used to shortcut to the physical
	 * system's hostname.
	 */
	pr = (cred != NULL) ? cred->cr_prison : &prison0;
	mtx_lock(&pr->pr_mtx);
	strlcpy(buf, pr->pr_hostname, size);
	mtx_unlock(&pr->pr_mtx);
}

void
getcreddomainname(struct ucred *cred, char *buf, size_t size)