map_parse_fds
nb_fds = map_parse_fds(argc, argv, &fds, open_flags);
int map_parse_fds(int *argc, char ***argv, int **fds, __u32 open_flags);
nb_fds = map_parse_fds(&argc, &argv, &fds, BPF_F_RDONLY);
nb_fds = map_parse_fds(&argc, &argv, &fds, BPF_F_RDONLY);