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 
main(int ac,char ** argv)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(filename, sizeof(filename), "%s_kern.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 
46 cleanup:
47 	bpf_link__destroy(link);
48 	bpf_object__close(obj);
49 	return 0;
50 }
51