2.11BSD#431 - /usr/src/usr.lib/libutil/login.c

   1: /*
   2:  * Copyright (c) 1988 The Regents of the University of California.
   3:  * All rights reserved.
   4:  *
   5:  * Redistribution and use in source and binary forms are permitted
   6:  * provided that the above copyright notice and this paragraph are
   7:  * duplicated in all such forms and that any documentation,
   8:  * advertising materials, and other materials related to such
   9:  * distribution and use acknowledge that the software was developed
  10:  * by the University of California, Berkeley.  The name of the
  11:  * University may not be used to endorse or promote products derived
  12:  * from this software without specific prior written permission.
  13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  16:  */
  17: 
  18: #if defined(LIBC_SCCS) && !defined(lint)
  19: static char sccsid[] = "@(#)login.c	5.2 (Berkeley) 4/18/89";
  20: #endif /* LIBC_SCCS and not lint */
  21: 
  22: #include <sys/types.h>
  23: #include <sys/file.h>
  24: #include <utmp.h>
  25: #include <stdio.h>
  26: #include "pathnames.h"
  27: 
  28: void
  29: login(ut)
  30:     struct utmp *ut;
  31: {
  32:     register int fd;
  33:     int tty;
  34:     off_t lseek();
  35: 
  36:     tty = ttyslot();
  37:     if (tty > 0 && (fd = open(_PATH_UTMP, O_WRONLY, 0)) >= 0) {
  38:         (void)lseek(fd, (long)(tty * sizeof(struct utmp)), L_SET);
  39:         (void)write(fd, (char *)ut, sizeof(struct utmp));
  40:         (void)close(fd);
  41:     }
  42:     if ((fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) >= 0) {
  43:         (void)write(fd, (char *)ut, sizeof(struct utmp));
  44:         (void)close(fd);
  45:     }
  46: }

Defined functions

Defined variables