4.3BSD - /usr/include/utmp.h

   1: /*
   2:  * Copyright (c) 1980 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  *
   6:  *	@(#)utmp.h	5.1 (Berkeley) 5/30/85
   7:  */
   8: 
   9: /*
  10:  * Structure of utmp and wtmp files.
  11:  *
  12:  * Assuming the number 8 is unwise.
  13:  */
  14: struct utmp {
  15:     char    ut_line[8];     /* tty name */
  16:     char    ut_name[8];     /* user id */
  17:     char    ut_host[16];        /* host name, if remote */
  18:     long    ut_time;        /* time on */
  19: };

Defined struct's

Usage of this include