1 // SPDX-License-Identifier: GPL-2.0
2 #include "vmlinux.h"
3 #include <bpf/bpf_helpers.h>
4
5 /*
6 * Minimal, map-less program. Driven through libbpf's gen_loader (gen_hash)
7 * by prog_tests/signed_loader.c so the generated light-skeleton loader can be
8 * exercised against good and tampered metadata, which the kernel now verifies
9 * at load time via the insns||metadata signature. A socket filter needs no
10 * load-time attach resolution, and having no maps keeps the generated loader's
11 * ctx trivial (0 maps, 1 prog).
12 */
13 SEC("socket")
probe(void * ctx)14 int probe(void *ctx)
15 {
16 return 0;
17 }
18
19 char _license[] SEC("license") = "GPL";
20