| // SPDX-License-Identifier: GPL-2.0 | |
| #include "vmlinux.h" | |
| #include <bpf/bpf_helpers.h> | |
| /* | |
| * Minimal, map-less program. Driven through libbpf's gen_loader (gen_hash) | |
| * by prog_tests/signed_loader.c so the generated light-skeleton loader can be | |
| * exercised against good and tampered metadata, which the kernel now verifies | |
| * at load time via the insns||metadata signature. A socket filter needs no | |
| * load-time attach resolution, and having no maps keeps the generated loader's | |
| * ctx trivial (0 maps, 1 prog). | |
| */ | |
| SEC("socket") | |
| int probe(void *ctx) | |
| { | |
| return 0; | |
| } | |
| char _license[] SEC("license") = "GPL"; |