1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/*
* pty_open_slave: open slave side of terminal, clearing for use.
* and utmp entries.
*
* Copyright 1990 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. 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 "mit-copyright.h"
#include <com_err.h>
#include "libpty.h"
#include "pty-int.h"
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 POSIX_SIGNALS
struct sigaction sa;
/* Initialize "sa" structure. */
(void) sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
#endif
#ifdef HAVE_STREAMS
while (ioctl (fd, I_POP, 0) == 0); /*Clear out any old lined's*/
#ifdef HAVE_LINE_PUSH
if (line_push(fd) < 0)
{
(void) close(fd); fd = -1;
return PTY_OPEN_SLAVE_LINE_PUSHFAIL;
}
#else /*No line_push */
#ifdef sun
if (ioctl(fd, I_PUSH, "ptem") < 0)
return PTY_OPEN_SLAVE_PUSH_FAIL;
if (ioctl(fd, I_PUSH, "ldterm") < 0)
return PTY_OPEN_SLAVE_PUSH_FAIL;
if (ioctl(fd, I_PUSH, "ttcompat") < 0)
return PTY_OPEN_SLAVE_PUSH_FAIL;
#endif /*SUN*/
#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;
}
|
