5 #include <bpf/libbpf.h>
7 int main(int argc, char **argv)
9 struct bpf_link *link = NULL;
10 struct bpf_program *prog;
11 struct bpf_object *obj;
18 fprintf(stderr, "ERROR: Run with the btrfs device argument!\n");
22 snprintf(filename, sizeof(filename), "%s_kern.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");
29 prog = bpf_object__find_program_by_name(obj, "bpf_prog1");
31 fprintf(stderr, "ERROR: finding a prog in obj file failed\n");
35 /* load BPF program */
36 if (bpf_object__load(obj)) {
37 fprintf(stderr, "ERROR: loading BPF object file failed\n");
41 link = bpf_program__attach(prog);
42 if (libbpf_get_error(link)) {
43 fprintf(stderr, "ERROR: bpf_program__attach failed\n");
48 snprintf(command, 256, "mount %s tmpmnt/", argv[1]);
49 f = popen(command, "r");
53 bpf_link__destroy(link);
54 bpf_object__close(obj);