Function khelp_init_osd

freebsd/kern/kern_khelp.c:150–185

}

int
khelp_init_osd(uint32_t classes, struct osd *hosd)
{
	struct helper *h;
	void *hdata;
	int error;

	KASSERT(hosd != NULL, ("struct osd not initialised!"));

	error = 0;

	KHELP_LIST_RLOCK();
	TAILQ_FOREACH(h, &helpers, h_next) {
		/* If helper is correct class and needs to store OSD... */
		if (h->h_classes & classes && h->h_flags & HELPER_NEEDS_OSD) {
			hdata = uma_zalloc(h->h_zone, M_NOWAIT);
			if (hdata == NULL) {
				error = ENOMEM;
				break;
			}
			osd_set(OSD_KHELP, hosd, h->h_id, hdata);
			refcount_acquire(&h->h_refcount);
		}
	}

	if (error) {
		/* Delete OSD that was assigned prior to the error. */
		TAILQ_FOREACH(h, &helpers, h_next) {
			if (h->h_classes & classes)
				khelp_remove_osd(h, hosd);
		}
	}
	KHELP_LIST_RUNLOCK();

	return (error);
}

int
khelp_destroy_osd(struct osd *hosd)