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
7int 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(filename, sizeof(filename), "%s.bpf.o", argv[0]);
16 obj = bpf_object__open_file(filename, NULL);
17 if (libbpf_get_error(obj)) {
18 fprintf(stderr, "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, "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, "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, "ERROR: bpf_program__attach failed\n");
37 link = NULL;
38 goto cleanup;
39 }
40
41 f = popen("taskset 1 ping -c5 localhost", "r");
42 (void) f;
43
44 read_trace_pipe();
45
46cleanup:
47 bpf_link__destroy(link);
48 bpf_object__close(obj);
49 return 0;
50}
51

source code of linux/samples/bpf/tracex1_user.c