#define SHMLBA 4096

struct shmid_ds {
  struct ipc_perm shm_perm;
  size_t shm_segsz;
  time_t shm_atime;
  time_t shm_dtime;
  time_t shm_ctime;
  pid_t shm_cpid;
  pid_t shm_lpid;
  unsigned long shm_nattch;
  unsigned long __pad0;
  unsigned long long __pad1;
  unsigned long long __pad2;
};

struct shminfo {
  unsigned long shmmax, __pad0, shmmin, __pad1, shmmni, __pad2, shmseg, __pad3,
      shmall, __pad4;
  unsigned long long __unused[4];
};

struct shm_info {
  int __used_ids;
  int __pad_ids;
  unsigned long shm_tot, __pad0, shm_rss, __pad1, shm_swp, __pad2;
  unsigned long __swap_attempts, __pad3, __swap_successes, __pad4;
}
#ifdef __GNUC__
__attribute__((__aligned__(8)))
#endif
;