1 /* Copyright (C) 1992, 1995, 1997, 1998 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
17
18 #include <features.h>
19 #include <string.h>
20 #include <termios.h>
21 #include <unistd.h>
22 #include <sys/ioctl.h>
23 #include <sys/types.h>
24
25
26 /* The difference here is that the termios structure used in the
27 kernel is not the same as we use in the libc. Therefore we must
28 translate it here. */
29 #include "kernel_termios.h"
30
31 /* Put the state of FD into *TERMIOS_P. */
tcgetattr(int fd,struct termios * termios_p)32 int tcgetattr (int fd, struct termios *termios_p)
33 {
34 struct __kernel_termios k_termios;
35 int retval;
36
37 retval = ioctl (fd, TCGETS, &k_termios);
38 if(likely(retval == 0)) {
39 termios_p->c_iflag = k_termios.c_iflag;
40 termios_p->c_oflag = k_termios.c_oflag;
41 termios_p->c_cflag = k_termios.c_cflag;
42 termios_p->c_lflag = k_termios.c_lflag;
43 termios_p->c_line = k_termios.c_line;
44 #ifdef _HAVE_C_ISPEED
45 termios_p->c_ispeed = k_termios.c_ispeed;
46 #endif
47 #ifdef _HAVE_C_OSPEED
48 termios_p->c_ospeed = k_termios.c_ospeed;
49 #endif
50
51
52 if (sizeof (cc_t) == 1 || _POSIX_VDISABLE == 0
53 || (unsigned char) _POSIX_VDISABLE == (unsigned char) -1)
54 {
55 memset (mempcpy (&termios_p->c_cc[0], &k_termios.c_cc[0],
56 __KERNEL_NCCS * sizeof (cc_t)),
57 _POSIX_VDISABLE, (NCCS - __KERNEL_NCCS) * sizeof (cc_t));
58 #if 0
59 memset ( (memcpy (&termios_p->c_cc[0], &k_termios.c_cc[0],
60 __KERNEL_NCCS * sizeof (cc_t)) + (__KERNEL_NCCS * sizeof (cc_t))) ,
61 _POSIX_VDISABLE, (NCCS - __KERNEL_NCCS) * sizeof (cc_t));
62 #endif
63 } else {
64 size_t cnt;
65
66 memcpy (&termios_p->c_cc[0], &k_termios.c_cc[0],
67 __KERNEL_NCCS * sizeof (cc_t));
68
69 for (cnt = __KERNEL_NCCS; cnt < NCCS; ++cnt)
70 termios_p->c_cc[cnt] = _POSIX_VDISABLE;
71 }
72 }
73
74 return retval;
75 }
76 libc_hidden_def(tcgetattr)
77