kernel/bpf/cgroup.c

289 		struct bpf_prog_list *pl;
292 		hlist_for_each_entry_safe(pl, pltmp, progs, node) {
293 			hlist_del(&pl->node);
294 			if (pl->prog) {
295 				if (pl->prog->expected_attach_type == BPF_LSM_CGROUP)
296 					bpf_trampoline_unlink_cgroup_shim(pl->prog);
297 				bpf_prog_put(pl->prog);
299 			if (pl->link) {
300 				if (pl->link->link.prog->expected_attach_type == BPF_LSM_CGROUP)
301 					bpf_trampoline_unlink_cgroup_shim(pl->link->link.prog);
302 				bpf_cgroup_link_auto_detach(pl->link);
304 			kfree(pl);
343 static struct bpf_prog *prog_list_prog(struct bpf_prog_list *pl)
345 	if (pl->prog)
346 		return pl->prog;
347 	if (pl->link)
348 		return pl->link->link.prog;
357 	struct bpf_prog_list *pl;
360 	hlist_for_each_entry(pl, head, node) {
361 		if (!prog_list_prog(pl))
407 	struct bpf_prog_list *pl;
429 		hlist_for_each_entry(pl, &p->bpf.progs[atype], node) {
430 			if (!prog_list_prog(pl))
434 			item->prog = prog_list_prog(pl);
436 						   pl->storage);
562 	struct bpf_prog_list *pl;
568 		return hlist_entry(progs->first, typeof(*pl), node);
571 	hlist_for_each_entry(pl, progs, node) {
572 		if (prog && pl->prog == prog && prog != replace_prog)
575 		if (link && pl->link == link)
582 		hlist_for_each_entry(pl, progs, node) {
583 			if (pl->prog == replace_prog)
585 				return pl;
618 	struct bpf_prog_list *pl;
652 	pl = find_attach_entry(progs, prog, link, replace_prog,
654 	if (IS_ERR(pl))
655 		return PTR_ERR(pl);
661 	if (pl) {
662 		old_prog = pl->prog;
666 		pl = kmalloc(sizeof(*pl), GFP_KERNEL);
667 		if (!pl) {
672 			hlist_add_head(&pl->node, progs);
677 				hlist_add_behind(&pl->node, last);
682 	pl->prog = prog;
683 	pl->link = link;
684 	bpf_cgroup_storages_assign(pl->storage, storage);
713 		pl->prog = old_prog;
714 		pl->link = NULL;
718 		hlist_del(&pl->node);
719 		kfree(pl);
748 	struct bpf_prog_list *pl;
765 			hlist_for_each_entry(pl, head, node) {
766 				if (!prog_list_prog(pl))
768 				if (pl->link == link)
799 	struct bpf_prog_list *pl;
812 	hlist_for_each_entry(pl, progs, node) {
813 		if (pl->link == link) {
856 	struct bpf_prog_list *pl;
866 		return hlist_entry(progs->first, typeof(*pl), node);
876 	hlist_for_each_entry(pl, progs, node) {
877 		if (pl->prog == prog && pl->link == link)
878 			return pl;
899 	struct bpf_prog_list *pl;
917 			hlist_for_each_entry(pl, head, node) {
918 				if (!prog_list_prog(pl))
920 				if (pl->prog == prog && pl->link == link)
955 	struct bpf_prog_list *pl;
976 	pl = find_detach_entry(progs, prog, link, flags & BPF_F_ALLOW_MULTI);
977 	if (IS_ERR(pl))
978 		return PTR_ERR(pl);
981 	old_prog = pl->prog;
982 	pl->prog = NULL;
983 	pl->link = NULL;
987 		pl->prog = old_prog;
988 		pl->link = link;
993 	hlist_del(&pl->node);
995 	kfree(pl);
1086 			struct bpf_prog_list *pl;
1093 			hlist_for_each_entry(pl, progs, node) {
1094 				prog = prog_list_prog(pl);