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/* cleansess.c - Clean up the pty and frob utmp/wtmp accordingly after logout
Copyright (C) 1996-2025 Free Software Foundation, Inc.
This file is part of GNU Inetutils.
GNU Inetutils is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at
your option) any later version.
GNU Inetutils 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see `http://www.gnu.org/licenses/'. */
/* Written by Miles Bader. */
#include <config.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/time.h>
#include <time.h>
#ifdef HAVE_UTMP_H
# ifdef HAVE_UTIL_H
# include <util.h>
# endif
# ifdef HAVE_LIBUTIL_H
# include <libutil.h>
# endif
# include <utmp.h>
#else
# ifdef HAVE_UTMPX_H
# include <utmpx.h>
# define utmp utmpx /* make utmpx look more like utmp */
# endif
#endif
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#if defined HAVE_LOGOUT && HAVE_LOGWTMP
/* Update umtp & wtmp as necessary, and change tty & pty permissions back to
what they should be. */
void
cleanup_session (char *tty, int pty_fd)
{
char *line;
# ifdef PATH_TTY_PFX
if (strncmp (tty, PATH_TTY_PFX, sizeof PATH_TTY_PFX - 1) == 0)
line = tty + sizeof PATH_TTY_PFX - 1;
else
# endif/* PATH_TTY_PFX */
line = tty;
if (logout (line))
logwtmp (line, "", "");
chmod (tty, 0666);
chown (tty, 0, 0);
fchmod (pty_fd, 0666);
fchown (pty_fd, 0, 0);
}
#endif /* HAVE_LOGOUT && HAVE_LOGWTMP */
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