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/*
* pty_init_slave: open slave side of terminal, clearing for use.
*
* Copyright 1995, 1996 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"
/* * The following is an array of modules that should be pushed on the
* stream. See configure.in for caviats and notes about when this
* array is used and not used.
*/
#if defined(HAVE_STREAMS)&&(!defined(HAVE_LINE_PUSH))
static char *push_list[] = {
#ifdef PUSH_PTEM
"ptem",
#endif
#ifdef PUSH_LDTERM
"ldterm",
#endif
#ifdef PUSH_TTCOMPAT
"ttcompat",
#endif
0};
#endif /*HAVE_STREAMS but not HAVE_LINE_PUSH*/
long pty_initialize_slave (fd)
int fd;
{
#if defined(POSIX_TERMIOS) && !defined(ultrix)
struct termios new_termio;
#else
struct sgttyb b;
#endif /* POSIX_TERMIOS */
int pid;
#ifdef HAVE_STREAMS
#ifdef HAVE_LINE_PUSH
while (ioctl (fd, I_POP, 0) == 0); /*Clear out any old lined's*/
if (line_push(fd) < 0)
{
(void) close(fd); fd = -1;
return PTY_OPEN_SLAVE_LINE_PUSHFAIL;
}
#else /*No line_push */
{
char **module = &push_list[0];
while (*module)
if (ioctl(fd, I_PUSH, *(module++)) < 0)
return PTY_OPEN_SLAVE_PUSH_FAIL;
}
#endif /*LINE_PUSH*/
#endif /*HAVE_STREAMS*/
/*
* Under Ultrix 3.0, the pgrp of the slave pty terminal
* needs to be set explicitly. Why rlogind works at all
* without this on 4.3BSD is a mystery.
*/
#ifdef GETPGRP_ONEARG
pid = getpgrp(getpid());
#else
pid = getpgrp();
#endif
#ifdef TIOCSPGRP
ioctl(fd, TIOCSPGRP, &pid);
#endif
#if defined(POSIX_TERMIOS) && !defined(ultrix)
tcsetpgrp(fd, pid);
tcgetattr(fd,&new_termio);
new_termio.c_cc[VMIN] = 1;
new_termio.c_cc[VTIME] = 0;
tcsetattr(fd,TCSANOW,&new_termio);
#endif /* POSIX_TERMIOS */
return 0;
}
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