vhangup.c   [plain text]

/*
 * pty_open_slave: open slave side of terminal, clearing for use.
 *
 * Copyright 1995 by the Massachusetts Institute of Technology.
 *
 * 
 * Permission to use, copy, modify, and distribute this software and
 * its documentation for any purpose and without fee is hereby
 * granted, provided that the above copyright notice appear in all
 * copies and that both that copyright notice and this permission
 * notice appear in supporting documentation, and that the name of
 * M.I.T. not be used in advertising or publicity pertaining to
 * distribution of the software without specific, written prior
 * permission.  Furthermore if you modify this software you must label
 * your software as modified software and not distribute it in such a
 * fashion that it might be confused with the original M.I.T. software.
 * M.I.T. makes no representations about the suitability
 * of this software for any purpose.  It is provided "as is" without
 * express or implied warranty.
 * 
 */

#include "com_err.h"
#include "libpty.h"
#include "pty-int.h"

void ptyint_vhangup(void)
{
#ifdef HAVE_VHANGUP
#ifdef POSIX_SIGNALS
    struct sigaction sa;
    /* Initialize "sa" structure. */
    (void) sigemptyset(&sa.sa_mask);
    sa.sa_flags = 0;
    
#endif

#ifdef POSIX_SIGNALS
	sa.sa_handler = SIG_IGN;
	(void) sigaction(SIGHUP, &sa, (struct sigaction *)0);
	vhangup();
	sa.sa_handler = SIG_DFL;
	(void) sigaction(SIGHUP, &sa, (struct sigaction *)0);
#else
	signal(SIGHUP, SIG_IGN);
	vhangup();
	signal(SIGHUP, SIG_DFL);
#endif
#endif
}