summary refs log tree commit diff
path: root/sysdeps/unix/bsd/tcgetattr.c
blob: c5074c659e6b5d516cd6e82fc77eddd800a92d8f (plain) (blame)
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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
/* Copyright (C) 1991, 1992, 1995, 1996, 1997 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#include <errno.h>
#include <stddef.h>
#include <termios.h>

#include "bsdtty.h"

extern const speed_t __bsd_speeds[]; /* Defined in tcsetattr.c.  */

/* Put the state of FD into *TERMIOS_P.  */
int
__tcgetattr (fd, termios_p)
     int fd;
     struct termios *termios_p;
{
  struct sgttyb buf;
  struct tchars tchars;
  struct ltchars ltchars;
  int local;
#ifdef	TIOCGETX
  int extra;
#endif

  if (termios_p == NULL)
    {
      __set_errno (EINVAL);
      return -1;
    }

  if (__ioctl(fd, TIOCGETP, &buf) < 0 ||
      __ioctl(fd, TIOCGETC, &tchars) < 0 ||
      __ioctl(fd, TIOCGLTC, &ltchars) < 0 ||
#ifdef	TIOCGETX
      __ioctl(fd, TIOCGETX, &extra) < 0 ||
#endif
      __ioctl(fd, TIOCLGET, &local) < 0)
    return -1;

  termios_p->__ispeed = __bsd_speeds[(unsigned char) buf.sg_ispeed];
  termios_p->__ospeed = __bsd_speeds[(unsigned char) buf.sg_ospeed];

  termios_p->c_iflag = 0;
  termios_p->c_oflag = 0;
  termios_p->c_cflag = 0;
  termios_p->c_lflag = 0;
  termios_p->c_oflag |= CREAD | HUPCL;
#ifdef	LPASS8
  if (local & LPASS8)
    termios_p->c_oflag |= CS8;
  else
#endif
    termios_p->c_oflag |= CS7;
  if (!(buf.sg_flags & RAW))
    {
      termios_p->c_iflag |= IXON;
      termios_p->c_cflag |= OPOST;
#ifndef	NOISIG
      termios_p->c_lflag |= ISIG;
#endif
    }
  if ((buf.sg_flags & (CBREAK|RAW)) == 0)
    termios_p->c_lflag |= ICANON;
  if (!(buf.sg_flags & RAW) && !(local & LLITOUT))
    termios_p->c_oflag |= OPOST;
  if (buf.sg_flags & CRMOD)
    termios_p->c_iflag |= ICRNL;
  if (buf.sg_flags & TANDEM)
    termios_p->c_iflag |= IXOFF;
#ifdef	TIOCGETX
  if (!(extra & NOISIG))
    termios_p->c_lflag |= ISIG;
  if (extra & STOPB)
    termios_p->c_cflag |= CSTOPB;
#endif

  switch (buf.sg_flags & (EVENP|ODDP))
    {
    case EVENP|ODDP:
      break;
    case ODDP:
      termios_p->c_cflag |= PARODD;
    default:
      termios_p->c_cflag |= PARENB;
      termios_p->c_iflag |= IGNPAR | INPCK;
      break;
    }
  if (buf.sg_flags & ECHO)
    termios_p->c_lflag |= _ECHO;
  if (local & LCRTERA)
    termios_p->c_lflag |= ECHOE;
  if (local & LCRTKIL)
    termios_p->c_lflag |= ECHOK;
  if (local & LTOSTOP)
    termios_p->c_lflag |= _TOSTOP;
  if (local & LNOFLSH)
    termios_p->c_lflag |= _NOFLSH;

  termios_p->c_cc[VEOF] = tchars.t_eofc;
  termios_p->c_cc[VEOL] = '\n';
  termios_p->c_cc[VERASE] = buf.sg_erase;
  termios_p->c_cc[VKILL] = buf.sg_kill;
  termios_p->c_cc[VINTR] = tchars.t_intrc;
  termios_p->c_cc[VQUIT] = tchars.t_quitc;
  termios_p->c_cc[VSTART] = tchars.t_startc;
  termios_p->c_cc[VSTOP] = tchars.t_stopc;
  termios_p->c_cc[VSUSP] = ltchars.t_suspc;
  termios_p->c_cc[VMIN] = -1;
  termios_p->c_cc[VTIME] = -1;

  return 0;
}

weak_alias (__tcgetattr, tcgetattr)