Function tables_foreach

tools/ipfw/tables.c:1676–1716

* Retrieves table list from kernel, * optionally sorts it and calls requested function for each table. * Returns 0 on success. */

 * Returns 0 on success.
 */
static int
tables_foreach(table_cb_t *f, void *arg, int sort)
{
	ipfw_obj_lheader *olh;
	ipfw_xtable_info *info;
	size_t sz;
	uint32_t i;
	int error;

	/* Start with reasonable default */
	sz = sizeof(*olh) + 16 * sizeof(ipfw_xtable_info);

	for (;;) {
		if ((olh = calloc(1, sz)) == NULL)
			return (ENOMEM);

		olh->size = sz;
		if (do_get3(IP_FW_TABLES_XLIST, &olh->opheader, &sz) != 0) {
			sz = olh->size;
			free(olh);
			if (errno != ENOMEM)
				return (errno);
			continue;
		}

		if (sort != 0)
			qsort(olh + 1, olh->count, olh->objsize,
			    tablename_cmp);

		info = (ipfw_xtable_info *)(olh + 1);
		for (i = 0; i < olh->count; i++) {
			if (g_co.use_set == 0 || info->set == g_co.use_set - 1)
				error = f(info, arg);
			info = (ipfw_xtable_info *)((caddr_t)info +
			    olh->objsize);
		}
		free(olh);
		break;
	}
	return (0);
}


/*