1 | // SPDX-License-Identifier: GPL-2.0 |
2 | #include <stdio.h> |
3 | #include <unistd.h> |
4 | #include <bpf/libbpf.h> |
5 | #include "trace_helpers.h" |
6 | |
7 | int main(int ac, char **argv) |
8 | { |
9 | struct bpf_link *link = NULL; |
10 | struct bpf_program *prog; |
11 | struct bpf_object *obj; |
12 | char filename[256]; |
13 | FILE *f; |
14 | |
15 | snprintf(s: filename, maxlen: sizeof(filename), format: "%s.bpf.o" , argv[0]); |
16 | obj = bpf_object__open_file(filename, NULL); |
17 | if (libbpf_get_error(obj)) { |
18 | fprintf(stderr, format: "ERROR: opening BPF object file failed\n" ); |
19 | return 0; |
20 | } |
21 | |
22 | prog = bpf_object__find_program_by_name(obj, "bpf_prog1" ); |
23 | if (!prog) { |
24 | fprintf(stderr, format: "ERROR: finding a prog in obj file failed\n" ); |
25 | goto cleanup; |
26 | } |
27 | |
28 | /* load BPF program */ |
29 | if (bpf_object__load(obj)) { |
30 | fprintf(stderr, format: "ERROR: loading BPF object file failed\n" ); |
31 | goto cleanup; |
32 | } |
33 | |
34 | link = bpf_program__attach(prog); |
35 | if (libbpf_get_error(link)) { |
36 | fprintf(stderr, format: "ERROR: bpf_program__attach failed\n" ); |
37 | link = NULL; |
38 | goto cleanup; |
39 | } |
40 | |
41 | f = popen(command: "taskset 1 ping -c5 localhost" , modes: "r" ); |
42 | (void) f; |
43 | |
44 | read_trace_pipe(); |
45 | |
46 | cleanup: |
47 | bpf_link__destroy(link); |
48 | bpf_object__close(obj); |
49 | return 0; |
50 | } |
51 | |