Merge tag 'regulator-fix-v6.6-merge-window' of git://git.kernel.org/pub/scm/linux...
[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         if (!argv[1]) {
18                 fprintf(stderr, "ERROR: Run with the btrfs device argument!\n");
19                 return 0;
20         }
21
22         snprintf(filename, sizeof(filename), "%s.bpf.o", argv[0]);
23         obj = bpf_object__open_file(filename, NULL);
24         if (libbpf_get_error(obj)) {
25                 fprintf(stderr, "ERROR: opening BPF object file failed\n");
26                 return 0;
27         }
28
29         prog = bpf_object__find_program_by_name(obj, "bpf_prog1");
30         if (!prog) {
31                 fprintf(stderr, "ERROR: finding a prog in obj file failed\n");
32                 goto cleanup;
33         }
34
35         /* load BPF program */
36         if (bpf_object__load(obj)) {
37                 fprintf(stderr, "ERROR: loading BPF object file failed\n");
38                 goto cleanup;
39         }
40
41         link = bpf_program__attach(prog);
42         if (libbpf_get_error(link)) {
43                 fprintf(stderr, "ERROR: bpf_program__attach failed\n");
44                 link = NULL;
45                 goto cleanup;
46         }
47
48         snprintf(command, 256, "mount %s tmpmnt/", argv[1]);
49         f = popen(command, "r");
50         ret = pclose(f);
51
52 cleanup:
53         bpf_link__destroy(link);
54         bpf_object__close(obj);
55         return ret ? 0 : 1;
56 }