sys/kern/kern_sysctl.c

147 	 * First check if another oid with the same name already
162 	 * If this oid has a number OID_AUTO, give it a number which
163 	 * is greater than any current oid.
178 		printf("static sysctl oid too high: %d", oidp->oid_number);
183 	 * Insert the oid into the parent's list in order.
510 	/* Register this oid */
517  * Rename an existing oid.
534  * Reparent an existing oid.
537 sysctl_move_oid(struct sysctl_oid *oid, struct sysctl_oid_list *parent)
542 	if (oid->oid_parent == parent) {
546 	oidp = sysctl_find_oidname(oid->oid_name, parent);
551 	sysctl_unregister_oid(oid);
552 	oid->oid_parent = parent;
553 	oid->oid_number = OID_AUTO;
554 	sysctl_register_oid(oid);
665 	struct sysctl_oid *oid;
684 		SLIST_FOREACH(oid, lsp, oid_link) {
685 			if (oid->oid_number != *name)
691 				error = SYSCTL_OUT(req, oid->oid_name,
692 					strlen(oid->oid_name));
699 			if ((oid->oid_kind & CTLTYPE) != CTLTYPE_NODE)
702 			if (oid->oid_handler)
705 			lsp2 = SYSCTL_CHILDREN(oid);
789 	struct sysctl_oid *oid;
794 	i = sysctl_sysctl_next_ls(lsp, name, namelen, newoid, &j, 1, &oid);
810 name2oid(char *name, int *oid, int *len, struct sysctl_oid **oidpp)
828 		*oid++ = oidp->oid_number;
852 	int error, oid[CTL_MAXNAME], len = 0;
871 	error = name2oid(p, oid, &len, &op);
879 	error = SYSCTL_OUT(req, oid, len * sizeof *oid);
894 	struct sysctl_oid *oid;
898 	error = sysctl_find_oid(arg1, arg2, &oid, NULL, req);
902 	if (oid->oid_fmt == NULL) {
906 	error = SYSCTL_OUT(req, &oid->oid_kind, sizeof(oid->oid_kind));
909 	error = SYSCTL_OUT(req, oid->oid_fmt, strlen(oid->oid_fmt) + 1);
922 	struct sysctl_oid *oid;
926 	error = sysctl_find_oid(arg1, arg2, &oid, NULL, req);
930 	if (oid->oid_descr == NULL) {
934 	error = SYSCTL_OUT(req, oid->oid_descr, strlen(oid->oid_descr) + 1);
1253         int oid[CTL_MAXNAME];
1257 	oid[0] = 0;		/* sysctl internal magic */
1258 	oid[1] = 3;		/* name2oid */
1259 	oidlen = sizeof(oid);
1261 	error = kernel_sysctl(td, oid, 2, oid, &oidlen,
1266 	error = kernel_sysctl(td, oid, plen / sizeof(int), old, oldlenp,
1361 	struct sysctl_oid *oid;
1368 		SLIST_FOREACH(oid, lsp, oid_link) {
1369 			if (oid->oid_number == name[indx])
1372 		if (oid == NULL)
1376 		if ((oid->oid_kind & CTLTYPE) == CTLTYPE_NODE) {
1377 			if (oid->oid_handler != NULL || indx == namelen) {
1378 				*noid = oid;
1381 				KASSERT((oid->oid_kind & CTLFLAG_DYING) == 0,
1382 				    ("%s found DYING node %p", __func__, oid));
1385 			lsp = SYSCTL_CHILDREN(oid);
1387 			*noid = oid;
1390 			KASSERT((oid->oid_kind & CTLFLAG_DYING) == 0,
1391 			    ("%s found DYING node %p", __func__, oid));
1408 	struct sysctl_oid *oid;
1413 	error = sysctl_find_oid(arg1, arg2, &oid, &indx, req);
1417 	if ((oid->oid_kind & CTLTYPE) == CTLTYPE_NODE) {
1423 		if (oid->oid_handler == NULL)
1428 	if (req->newptr && !(oid->oid_kind & CTLFLAG_WR))
1439 		if (req->oldptr && !(oid->oid_kind & CTLFLAG_CAPRD))
1441 		if (req->newptr && !(oid->oid_kind & CTLFLAG_CAPWR))
1447 	if (req->newptr && (oid->oid_kind & CTLFLAG_SECURE)) {
1448 		lvl = (oid->oid_kind & CTLMASK_SECURE) >> CTLSHIFT_SECURE;
1455 	if (req->newptr && !(oid->oid_kind & CTLFLAG_ANYBODY)) {
1458 		if (oid->oid_kind & CTLFLAG_PRISON)
1461 		else if ((oid->oid_kind & CTLFLAG_VNET) &&
1472 	if (!oid->oid_handler)
1475 	if ((oid->oid_kind & CTLTYPE) == CTLTYPE_NODE) {
1479 		arg1 = oid->oid_arg1;
1480 		arg2 = oid->oid_arg2;
1483 	error = mac_system_check_sysctl(req->td->td_ucred, oid, arg1, arg2,
1488 	oid->oid_running++;
1491 	if (!(oid->oid_kind & CTLFLAG_MPSAFE))
1493 	error = oid->oid_handler(oid, arg1, arg2, req);
1494 	if (!(oid->oid_kind & CTLFLAG_MPSAFE))
1500 	oid->oid_running--;
1501 	if (oid->oid_running == 0 && (oid->oid_kind & CTLFLAG_DYING) != 0)
1502 		wakeup(&oid->oid_running);