GNU Linux-libre 6.6.15-gnu
[releases.git] / samples / bpf / tracex1_user.c
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(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
46 cleanup:
47         bpf_link__destroy(link);
48         bpf_object__close(obj);
49         return 0;
50 }