2.11BSD#431 - /usr/src/libexec/ftpd/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 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  16:  *
  17:  */
  18: 
  19: #ifndef lint
  20: static char sccsid[] = "@(#)logwtmp.c	based on 5.5 (Berkeley) 4/2/89";
  21: #endif /* not lint */
  22: 
  23: #include <sys/types.h>
  24: #include <sys/file.h>
  25: #include <sys/time.h>
  26: #include <sys/stat.h>
  27: #include <utmp.h>
  28: 
  29: #ifndef _PATH_WTMP
  30: #define _PATH_WTMP  "/usr/adm/wtmp"
  31: #endif
  32: 
  33: static int fd = -1;
  34: 
  35: /*
  36:  * Modified version of logwtmp that holds wtmp file open
  37:  * after first call, for use with ftp (which may chroot
  38:  * after login, but before logout).
  39:  */
  40: logwtmp(line, name, host)
  41:     char *line, *name, *host;
  42: {
  43:     struct utmp ut;
  44:     struct stat buf;
  45:     time_t time();
  46:     char *strncpy();
  47: 
  48:     if (fd < 0 && (fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) < 0)
  49:         return;
  50:     if (fstat(fd, &buf) == 0) {
  51:         (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
  52:         (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
  53:         (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
  54:         (void)time(&ut.ut_time);
  55:         if (write(fd, (char *)&ut, sizeof(struct utmp)) !=
  56:             sizeof(struct utmp))
  57:             (void)ftruncate(fd, buf.st_size);
  58:     }
  59: }

Defined functions

Defined variables

Defined macros