kernel/bpf/syscall.c

3542 static int bpf_copy_to_user(char __user *ubuf, const char *buf, u32 ulen,
3545 	if (ulen >= len + 1) {
3551 		if (copy_to_user(ubuf, buf, ulen - 1))
3553 		if (put_user(zero, ubuf + ulen - 1))
3568 	u32 ulen = info->raw_tracepoint.tp_name_len;
3571 	if (!ulen ^ !ubuf)
3579 	return bpf_copy_to_user(ubuf, tp_name, ulen, tp_len);
3612 				     char __user *uname, u32 ulen,
3621 	if (!ulen ^ !uname)
3632 		err = bpf_copy_to_user(uname, buf, ulen, len);
3651 	u32 ulen, type;
3655 	ulen = info->perf_event.kprobe.name_len;
3656 	err = bpf_perf_link_fill_common(event, uname, ulen, &offset, &addr,
3681 	u32 ulen, type;
3685 	ulen = info->perf_event.uprobe.name_len;
3686 	err = bpf_perf_link_fill_common(event, uname, ulen, &offset, &addr,
3719 	u32 ulen;
3722 	ulen = info->perf_event.tracepoint.name_len;
3725 	return bpf_perf_link_fill_common(event, uname, ulen, NULL, NULL, NULL, NULL);
4571 	u32 ulen;
4594 	ulen = info.nr_map_ids;
4596 	ulen = min_t(u32, info.nr_map_ids, ulen);
4597 	if (ulen) {
4601 		for (i = 0; i < ulen; i++)
4632 	ulen = info.xlated_prog_len;
4634 	if (info.xlated_prog_len && ulen) {
4646 		ulen = min_t(u32, info.xlated_prog_len, ulen);
4647 		fault = copy_to_user(uinsns, insns_sanitized, ulen);
4664 	ulen = info.jited_prog_len;
4675 	if (info.jited_prog_len && ulen) {
4678 			ulen = min_t(u32, info.jited_prog_len, ulen);
4687 				free = ulen;
4700 				if (copy_to_user(uinsns, prog->bpf_func, ulen))
4708 	ulen = info.nr_jited_ksyms;
4710 	if (ulen) {
4719 			ulen = min_t(u32, info.nr_jited_ksyms, ulen);
4722 				for (i = 0; i < ulen; i++) {
4739 	ulen = info.nr_jited_func_lens;
4741 	if (ulen) {
4747 			ulen = min_t(u32, info.nr_jited_func_lens, ulen);
4750 				for (i = 0; i < ulen; i++) {
4772 	ulen = info.nr_func_info;
4774 	if (info.nr_func_info && ulen) {
4778 		ulen = min_t(u32, info.nr_func_info, ulen);
4780 				 info.func_info_rec_size * ulen))
4784 	ulen = info.nr_line_info;
4786 	if (info.nr_line_info && ulen) {
4790 		ulen = min_t(u32, info.nr_line_info, ulen);
4792 				 info.line_info_rec_size * ulen))
4796 	ulen = info.nr_jited_line_info;
4801 	if (info.nr_jited_line_info && ulen) {
4808 			ulen = min_t(u32, info.nr_jited_line_info, ulen);
4809 			for (i = 0; i < ulen; i++) {
4819 	ulen = info.nr_prog_tags;
4821 	if (ulen) {
4826 		ulen = min_t(u32, info.nr_prog_tags, ulen);
4828 			for (i = 0; i < ulen; i++) {