Function prison0_init

freebsd/kern/kern_jail.c:231–266

* Initialize the parts of prison0 that can't be static-initialized with * constants. This is called from proc0_init() after creating thread0 cpuset. */

 * constants.  This is called from proc0_init() after creating thread0 cpuset.
 */
void
prison0_init(void)
{
	uint8_t *file, *data;
	size_t size;

	prison0.pr_cpuset = cpuset_ref(thread0.td_cpuset);
	prison0.pr_osreldate = osreldate;
	strlcpy(prison0.pr_osrelease, osrelease, sizeof(prison0.pr_osrelease));

	/* If we have a preloaded hostuuid, use it. */
	file = preload_search_by_type(PRISON0_HOSTUUID_MODULE);
	if (file != NULL) {
		data = preload_fetch_addr(file);
		size = preload_fetch_size(file);
		if (data != NULL) {
			/*
			 * The preloaded data may include trailing whitespace, almost
			 * certainly a newline; skip over any whitespace or
			 * non-printable characters to be safe.
			 */
			while (size > 0 && data[size - 1] <= 0x20) {
				data[size--] = '\0';
			}
			if (validate_uuid(data, size, NULL, 0) == 0) {
				(void)strlcpy(prison0.pr_hostuuid, data,
				    size + 1);
			} else if (bootverbose) {
				printf("hostuuid: preload data malformed: '%s'",
				    data);
			}
		}
	}
	if (bootverbose)
		printf("hostuuid: using %s\n", prison0.pr_hostuuid);
}

/*
 * struct jail_args {