#define _GNU_SOURCE #include <stdio.h> #include <unistd.h> #include <bpf/libbpf.h> int main(int argc, char **argv) { struct bpf_link *link = NULL; struct bpf_program *prog; struct bpf_object *obj; char filename[256]; char command[256]; int ret = 0; FILE *f; snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); obj = bpf_object__open_file(filename, NULL); if (libbpf_get_error(obj)) { fprintf(stderr, "ERROR: opening BPF object file failed\n"); return 0; } prog = bpf_object__find_program_by_name(obj, "bpf_prog1"); if (!prog) { fprintf(stderr, "ERROR: finding a prog in obj file failed\n"); goto cleanup; } /* load BPF program */ if (bpf_object__load(obj)) { fprintf(stderr, "ERROR: loading BPF object file failed\n"); goto cleanup; } link = bpf_program__attach(prog); if (libbpf_get_error(link)) { fprintf(stderr, "ERROR: bpf_program__attach failed\n"); link = NULL; goto cleanup; } snprintf(command, 256, "mount %s tmpmnt/", argv[1]); f = popen(command, "r"); ret = pclose(f); cleanup: bpf_link__destroy(link); bpf_object__close(obj); return ret ? 0 : 1; }