LXR linux/arch/mips/include/asm/termios.h

   1/*
   2 * This file is subject to the terms and conditions of the GNU General Public
   3 * License.  See the file "COPYING" in the main directory of this archive
   4 * for more details.
   5 *
   6 * Copyright (C) 1995, 1996, 2000, 2001 by Ralf Baechle
   7 * Copyright (C) 2000, 2001 Silicon Graphics, Inc.
   8 */
   9#ifndef _ASM_TERMIOS_H
  10#define _ASM_TERMIOS_H
  11
  12#include <linux/errno.h>
  13#include <asm/termbits.h>
  14#include <asm/ioctls.h>
  15
  16struct sgttyb {
  17        char    sg_ispeed;
  18        char    sg_ospeed;
  19        char    sg_erase;
  20        char    sg_kill;
  21        int     sg_flags;       /* SGI special - int, not short */
  22};
  23
  24struct tchars {
  25        char    t_intrc;
  26        char    t_quitc;
  27        char    t_startc;
  28        char    t_stopc;
  29        char    t_eofc;
  30        char    t_brkc;
  31};
  32
  33struct ltchars {
  34        char    t_suspc;        /* stop process signal */
  35        char    t_dsuspc;       /* delayed stop process signal */
  36        char    t_rprntc;       /* reprint line */
  37        char    t_flushc;       /* flush output (toggles) */
  38        char    t_werasc;       /* word erase */
  39        char    t_lnextc;       /* literal next character */
  40};
  41
  42/* TIOCGSIZE, TIOCSSIZE not defined yet.  Only needed for SunOS source
  43   compatibility anyway ... */
  44
  45struct winsize {
  46        unsigned short ws_row;
  47        unsigned short ws_col;
  48        unsigned short ws_xpixel;
  49        unsigned short ws_ypixel;
  50};
  51
  52#define NCC     8
  53struct termio {
  54        unsigned short c_iflag;         /* input mode flags */
  55        unsigned short c_oflag;         /* output mode flags */
  56        unsigned short c_cflag;         /* control mode flags */
  57        unsigned short c_lflag;         /* local mode flags */
  58        char c_line;                    /* line discipline */
  59        unsigned char c_cc[NCCS];       /* control characters */
  60};
  61
  62#ifdef __KERNEL__
  63#include <linux/module.h>
  64
  65/*
  66 *      intr=^C         quit=^\         erase=del       kill=^U
  67 *      vmin=\1         vtime=\0        eol2=\0         swtc=\0
  68 *      start=^Q        stop=^S         susp=^Z         vdsusp=
  69 *      reprint=^R      discard=^U      werase=^W       lnext=^V
  70 *      eof=^D          eol=\0
  71 */
  72#define INIT_C_CC "\003\034\177\025\1\0\0\0\021\023\032\0\022\017\027\026\004\0"
  73#endif
  74
  75/* modem lines */
  76#define TIOCM_LE        0x001           /* line enable */
  77#define TIOCM_DTR       0x002           /* data terminal ready */
  78#define TIOCM_RTS       0x004           /* request to send */
  79#define TIOCM_ST        0x010           /* secondary transmit */
  80#define TIOCM_SR        0x020           /* secondary receive */
  81#define TIOCM_CTS       0x040           /* clear to send */
  82#define TIOCM_CAR       0x100           /* carrier detect */
  83#define TIOCM_CD        TIOCM_CAR
  84#define TIOCM_RNG       0x200           /* ring */
  85#define TIOCM_RI        TIOCM_RNG
  86#define TIOCM_DSR       0x400           /* data set ready */
  87#define TIOCM_OUT1      0x2000
  88#define TIOCM_OUT2      0x4000
  89#define TIOCM_LOOP      0x8000
  90
  91#ifdef __KERNEL__
  92
  93#include <linux/string.h>
  94
  95/*
  96 * Translate a "termio" structure into a "termios". Ugh.
  97 */
  98static inline int user_termio_to_kernel_termios(struct ktermios *termios,
  99        struct termio __user *termio)
 100{
 101        unsigned short iflag, oflag, cflag, lflag;
 102        unsigned int err;
 103
 104        if (!access_ok(VERIFY_READ, termio, sizeof(struct termio)))
 105                return -EFAULT;
 106
 107        err = __get_user(iflag, &termio->c_iflag);
 108        termios->c_iflag = (termios->c_iflag & 0xffff0000) | iflag;
 109        err |=__get_user(oflag, &termio->c_oflag);
 110        termios->c_oflag = (termios->c_oflag & 0xffff0000) | oflag;
 111        err |=__get_user(cflag, &termio->c_cflag);
 112        termios->c_cflag = (termios->c_cflag & 0xffff0000) | cflag;
 113        err |=__get_user(lflag, &termio->c_lflag);
 114        termios->c_lflag = (termios->c_lflag & 0xffff0000) | lflag;
 115        err |=__get_user(termios->c_line, &termio->c_line);
 116        if (err)
 117                return -EFAULT;
 118
 119        if (__copy_from_user(termios->c_cc, termio->c_cc, NCC))
 120                return -EFAULT;
 121
 122        return 0;
 123}
 124
 125/*
 126 * Translate a "termios" structure into a "termio". Ugh.
 127 */
 128static inline int kernel_termios_to_user_termio(struct termio __user *termio,
 129        struct ktermios *termios)
 130{
 131        int err;
 132
 133        if (!access_ok(VERIFY_WRITE, termio, sizeof(struct termio)))
 134                return -EFAULT;
 135
 136        err = __put_user(termios->c_iflag, &termio->c_iflag);
 137        err |= __put_user(termios->c_oflag, &termio->c_oflag);
 138        err |= __put_user(termios->c_cflag, &termio->c_cflag);
 139        err |= __put_user(termios->c_lflag, &termio->c_lflag);
 140        err |= __put_user(termios->c_line, &termio->c_line);
 141        if (err)
 142                return -EFAULT;
 143
 144        if (__copy_to_user(termio->c_cc, termios->c_cc, NCC))
 145                return -EFAULT;
 146
 147        return 0;
 148}
 149
 150static inline int user_termios_to_kernel_termios(struct ktermios __user *k,
 151        struct termios2 *u)
 152{
 153        return copy_from_user(k, u, sizeof(struct termios2)) ? -EFAULT : 0;
 154}
 155
 156static inline int kernel_termios_to_user_termios(struct termios2 __user *u,
 157        struct ktermios *k)
 158{
 159        return copy_to_user(u, k, sizeof(struct termios2)) ? -EFAULT : 0;
 160}
 161
 162static inline int user_termios_to_kernel_termios_1(struct ktermios *k,
 163        struct termios __user *u)
 164{
 165        return copy_from_user(k, u, sizeof(struct termios)) ? -EFAULT : 0;
 166}
 167
 168static inline int kernel_termios_to_user_termios_1(struct termios __user *u,
 169        struct ktermios *k)
 170{
 171        return copy_to_user(u, k, sizeof(struct termios)) ? -EFAULT : 0;
 172}
 173
 174#endif /* defined(__KERNEL__) */
 175
 176#endif /* _ASM_TERMIOS_H */
 177