/* Copyright (C) 1996-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <errno.h>

#include <string.h>

#include <utmp.h>

#include <sys/time.h>

int

logout (const char *line)

{

  struct utmp tmp, utbuf;

  struct utmp *ut;

  int result = 0;

  /* Tell that we want to use the UTMP file.  */

  if (utmpname (_PATH_UTMP) == -1)

    return 0;

  /* Open UTMP file.  */

  setutent ();

  /* Fill in search information.  */

#if _HAVE_UT_TYPE - 0

  tmp.ut_type = USER_PROCESS;

#endif

  strncpy (tmp.ut_line, line, sizeof tmp.ut_line);

  /* Read the record.  */

  if (getutline_r (&tmp, &utbuf, &ut) >= 0)

    {

      /* Clear information about who & from where.  */

      memset (ut->ut_name, '\0', sizeof ut->ut_name);

#if _HAVE_UT_HOST - 0

      memset (ut->ut_host, '\0', sizeof ut->ut_host);

#endif

#if _HAVE_UT_TV - 0

      struct timeval tv;

      __gettimeofday (&tv, NULL);

      ut->ut_tv.tv_sec = tv.tv_sec;

      ut->ut_tv.tv_usec = tv.tv_usec;

#else

      ut->ut_time = time (NULL);

#endif

#if _HAVE_UT_TYPE - 0

      ut->ut_type = DEAD_PROCESS;

#endif

      if (pututline (ut) != NULL)

	result = 1;

    }

  /* Close UTMP file.  */

  endutent ();

  return result;

}