Merge tag 'for-5.8-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave...
[platform/kernel/linux-starfive.git] / samples / bpf / tracex7_user.c
1 #define _GNU_SOURCE
2
3 #include <stdio.h>
4 #include <unistd.h>
5 #include <bpf/libbpf.h>
6
7 int main(int argc, char **argv)
8 {
9         struct bpf_link *link = NULL;
10         struct bpf_program *prog;
11         struct bpf_object *obj;
12         char filename[256];
13         char command[256];
14         int ret = 0;
15         FILE *f;
16
17         snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
18         obj = bpf_object__open_file(filename, NULL);
19         if (libbpf_get_error(obj)) {
20                 fprintf(stderr, "ERROR: opening BPF object file failed\n");
21                 return 0;
22         }
23
24         prog = bpf_object__find_program_by_name(obj, "bpf_prog1");
25         if (!prog) {
26                 fprintf(stderr, "ERROR: finding a prog in obj file failed\n");
27                 goto cleanup;
28         }
29
30         /* load BPF program */
31         if (bpf_object__load(obj)) {
32                 fprintf(stderr, "ERROR: loading BPF object file failed\n");
33                 goto cleanup;
34         }
35
36         link = bpf_program__attach(prog);
37         if (libbpf_get_error(link)) {
38                 fprintf(stderr, "ERROR: bpf_program__attach failed\n");
39                 link = NULL;
40                 goto cleanup;
41         }
42
43         snprintf(command, 256, "mount %s tmpmnt/", argv[1]);
44         f = popen(command, "r");
45         ret = pclose(f);
46
47 cleanup:
48         bpf_link__destroy(link);
49         bpf_object__close(obj);
50         return ret ? 0 : 1;
51 }