| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 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, write to the Free |
| 16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 17 | 02111-1307 USA. */ |
| 18 | |
| 19 | #include <features.h> |
| 20 | #include <string.h> |
| 21 | #include <termios.h> |
| 22 | #include <unistd.h> |
| 23 | #include <sys/ioctl.h> |
| 24 | #include <sys/types.h> |
| 25 | |
| 26 | |
| 27 | /* The difference here is that the termios structure used in the |
| 28 | kernel is not the same as we use in the libc. Therefore we must |
| 29 | translate it here. */ |
| 30 | #include "kernel_termios.h" |
| 31 | |
| 32 | /* Put the state of FD into *TERMIOS_P. */ |
| 33 | int tcgetattr (int fd, struct termios *termios_p) |
| 34 | { |
| 35 | struct __kernel_termios k_termios; |
| 36 | int retval; |
| 37 | |
| 38 | retval = ioctl (fd, TCGETS, &k_termios); |
| 39 | if(likely(retval == 0)) { |
| 40 | termios_p->c_iflag = k_termios.c_iflag; |
| 41 | termios_p->c_oflag = k_termios.c_oflag; |
| 42 | termios_p->c_cflag = k_termios.c_cflag; |
| 43 | termios_p->c_lflag = k_termios.c_lflag; |
| 44 | termios_p->c_line = k_termios.c_line; |
| 45 | #ifdef _HAVE_C_ISPEED |
| 46 | termios_p->c_ispeed = k_termios.c_ispeed; |
| 47 | #endif |
| 48 | #ifdef _HAVE_C_OSPEED |
| 49 | termios_p->c_ospeed = k_termios.c_ospeed; |
| 50 | #endif |
| 51 | |
| 52 | |
| 53 | if (sizeof (cc_t) == 1 || _POSIX_VDISABLE == 0 |
| 54 | || (unsigned char) _POSIX_VDISABLE == (unsigned char) -1) |
| 55 | { |
| 56 | memset (mempcpy (&termios_p->c_cc[0], &k_termios.c_cc[0], |
| 57 | __KERNEL_NCCS * sizeof (cc_t)), |
| 58 | _POSIX_VDISABLE, (NCCS - __KERNEL_NCCS) * sizeof (cc_t)); |
| 59 | #if 0 |
| 60 | memset ( (memcpy (&termios_p->c_cc[0], &k_termios.c_cc[0], |
| 61 | __KERNEL_NCCS * sizeof (cc_t)) + (__KERNEL_NCCS * sizeof (cc_t))) , |
| 62 | _POSIX_VDISABLE, (NCCS - __KERNEL_NCCS) * sizeof (cc_t)); |
| 63 | #endif |
| 64 | } else { |
| 65 | size_t cnt; |
| 66 | |
| 67 | memcpy (&termios_p->c_cc[0], &k_termios.c_cc[0], |
| 68 | __KERNEL_NCCS * sizeof (cc_t)); |
| 69 | |
| 70 | for (cnt = __KERNEL_NCCS; cnt < NCCS; ++cnt) |
| 71 | termios_p->c_cc[cnt] = _POSIX_VDISABLE; |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | return retval; |
| 76 | } |
| 77 | libc_hidden_def(tcgetattr) |