listati/ipc_perm.h

   1 struct ipc_perm
   2 {
   3     key_t key;                        /* Key.  */
   4     uid_t uid;                        /* Owner's user ID.  */
   5     gid_t gid;                        /* Owner's group ID.  */
   6     uid_t cuid;                       /* Creator's user ID.  */
   7     gid_t cgid;                       /* Creator's group ID.  */
   8     unsigned short int mode;          /* Read/write permission.  */
   9     unsigned short int seq;           /* Sequence number.  */
  10 };