2.11BSD#431 - /usr/src/usr.lib/libutil/logwtmp.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[] = "@(#)logwtmp.c	5.3 (Berkeley) 4/2/89";
  20: #endif /* LIBC_SCCS and not lint */
  21: 
  22: #include <sys/types.h>
  23: #include <sys/file.h>
  24: #include <sys/time.h>
  25: #include <sys/stat.h>
  26: #include <utmp.h>
  27: #include "pathnames.h"
  28: 
  29: logwtmp(line, name, host)
  30:     char *line, *name, *host;
  31: {
  32:     struct utmp ut;
  33:     struct stat buf;
  34:     int fd;
  35:     time_t time();
  36:     char *strncpy();
  37: 
  38:     if ((fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) < 0)
  39:         return;
  40:     if (!fstat(fd, &buf)) {
  41:         (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
  42:         (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
  43:         (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
  44:         (void)time(&ut.ut_time);
  45:         if (write(fd, (char *)&ut, sizeof(struct utmp)) !=
  46:             sizeof(struct utmp))
  47:             (void)ftruncate(fd, buf.st_size);
  48:     }
  49:     (void)close(fd);
  50: }

Defined functions

Defined variables