Commit | Line | Data |
---|---|---|
965de87e JB |
1 | #define _GNU_SOURCE |
2 | ||
3 | #include <stdio.h> | |
965de87e | 4 | #include <unistd.h> |
63841bc0 | 5 | #include <bpf/libbpf.h> |
965de87e JB |
6 | |
7 | int main(int argc, char **argv) | |
8 | { | |
63841bc0 DL |
9 | struct bpf_link *link = NULL; |
10 | struct bpf_program *prog; | |
11 | struct bpf_object *obj; | |
965de87e JB |
12 | char filename[256]; |
13 | char command[256]; | |
63841bc0 DL |
14 | int ret = 0; |
15 | FILE *f; | |
965de87e | 16 | |
7d07006f JK |
17 | if (!argv[1]) { |
18 | fprintf(stderr, "ERROR: Run with the btrfs device argument!\n"); | |
19 | return 0; | |
20 | } | |
21 | ||
965de87e | 22 | snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); |
63841bc0 DL |
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 | } | |
965de87e | 40 | |
63841bc0 DL |
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; | |
965de87e JB |
46 | } |
47 | ||
48 | snprintf(command, 256, "mount %s tmpmnt/", argv[1]); | |
49 | f = popen(command, "r"); | |
50 | ret = pclose(f); | |
51 | ||
63841bc0 DL |
52 | cleanup: |
53 | bpf_link__destroy(link); | |
54 | bpf_object__close(obj); | |
965de87e JB |
55 | return ret ? 0 : 1; |
56 | } |