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termios.h

/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1995, 1996, 2000, 2001 by Ralf Baechle
 * Copyright (C) 2000, 2001 Silicon Graphics, Inc.
 */
#ifndef _ASM_TERMIOS_H
#define _ASM_TERMIOS_H

#include <linux/errno.h>
#include <asm/termbits.h>
#include <asm/ioctls.h>

struct sgttyb {
      char  sg_ispeed;
      char  sg_ospeed;
      char  sg_erase;
      char  sg_kill;
      int   sg_flags;   /* SGI special - int, not short */
};

struct tchars {
      char  t_intrc;
      char  t_quitc;
      char  t_startc;
      char  t_stopc;
      char  t_eofc;
      char  t_brkc;
};

struct ltchars {
        char    t_suspc;        /* stop process signal */
        char    t_dsuspc;       /* delayed stop process signal */
        char    t_rprntc;       /* reprint line */
        char    t_flushc;       /* flush output (toggles) */
        char    t_werasc;       /* word erase */
        char    t_lnextc;       /* literal next character */
};

/* TIOCGSIZE, TIOCSSIZE not defined yet.  Only needed for SunOS source
   compatibility anyway ... */

struct winsize {
      unsigned short ws_row;
      unsigned short ws_col;
      unsigned short ws_xpixel;
      unsigned short ws_ypixel;
};

#define NCC 8
struct termio {
      unsigned short c_iflag;       /* input mode flags */
      unsigned short c_oflag;       /* output mode flags */
      unsigned short c_cflag;       /* control mode flags */
      unsigned short c_lflag;       /* local mode flags */
      char c_line;                  /* line discipline */
      unsigned char c_cc[NCCS];     /* control characters */
};

#ifdef __KERNEL__
#include <linux/module.h>

/*
 *    intr=^C           quit=^\           erase=del   kill=^U
 *    vmin=\1           vtime=\0    eol2=\0           swtc=\0
 *    start=^Q    stop=^S           susp=^Z           vdsusp=
 *    reprint=^R  discard=^U  werase=^W   lnext=^V
 *    eof=^D            eol=\0
 */
#define INIT_C_CC "\003\034\177\025\1\0\0\0\021\023\032\0\022\017\027\026\004\0"
#endif

/* modem lines */
#define TIOCM_LE  0x001       /* line enable */
#define TIOCM_DTR 0x002       /* data terminal ready */
#define TIOCM_RTS 0x004       /* request to send */
#define TIOCM_ST  0x010       /* secondary transmit */
#define TIOCM_SR  0x020       /* secondary receive */
#define TIOCM_CTS 0x040       /* clear to send */
#define TIOCM_CAR 0x100       /* carrier detect */
#define TIOCM_CD  TIOCM_CAR
#define TIOCM_RNG 0x200       /* ring */
#define TIOCM_RI  TIOCM_RNG
#define TIOCM_DSR 0x400       /* data set ready */
#define TIOCM_OUT1      0x2000
#define TIOCM_OUT2      0x4000
#define TIOCM_LOOP      0x8000

#ifdef __KERNEL__

#include <linux/string.h>

/*
 * Translate a "termio" structure into a "termios". Ugh.
 */
static inline int user_termio_to_kernel_termios(struct ktermios *termios,
      struct termio __user *termio)
{
      unsigned short iflag, oflag, cflag, lflag;
      unsigned int err;

      if (!access_ok(VERIFY_READ, termio, sizeof(struct termio)))
            return -EFAULT;

      err = __get_user(iflag, &termio->c_iflag);
      termios->c_iflag = (termios->c_iflag & 0xffff0000) | iflag;
      err |=__get_user(oflag, &termio->c_oflag);
      termios->c_oflag = (termios->c_oflag & 0xffff0000) | oflag;
      err |=__get_user(cflag, &termio->c_cflag);
      termios->c_cflag = (termios->c_cflag & 0xffff0000) | cflag;
      err |=__get_user(lflag, &termio->c_lflag);
      termios->c_lflag = (termios->c_lflag & 0xffff0000) | lflag;
      err |=__get_user(termios->c_line, &termio->c_line);
      if (err)
            return -EFAULT;

      if (__copy_from_user(termios->c_cc, termio->c_cc, NCC))
            return -EFAULT;

      return 0;
}

/*
 * Translate a "termios" structure into a "termio". Ugh.
 */
static inline int kernel_termios_to_user_termio(struct termio __user *termio,
      struct ktermios *termios)
{
      int err;

      if (!access_ok(VERIFY_WRITE, termio, sizeof(struct termio)))
            return -EFAULT;

      err = __put_user(termios->c_iflag, &termio->c_iflag);
      err |= __put_user(termios->c_oflag, &termio->c_oflag);
      err |= __put_user(termios->c_cflag, &termio->c_cflag);
      err |= __put_user(termios->c_lflag, &termio->c_lflag);
      err |= __put_user(termios->c_line, &termio->c_line);
      if (err)
            return -EFAULT;

      if (__copy_to_user(termio->c_cc, termios->c_cc, NCC))
            return -EFAULT;

      return 0;
}

static inline int user_termios_to_kernel_termios(struct ktermios __user *k,
      struct termios2 *u)
{
      return copy_from_user(k, u, sizeof(struct termios2)) ? -EFAULT : 0;
}

static inline int kernel_termios_to_user_termios(struct termios2 __user *u,
      struct ktermios *k)
{
      return copy_to_user(u, k, sizeof(struct termios2)) ? -EFAULT : 0;
}

static inline int user_termios_to_kernel_termios_1(struct ktermios *k,
      struct termios __user *u)
{
      return copy_from_user(k, u, sizeof(struct termios)) ? -EFAULT : 0;
}

static inline int kernel_termios_to_user_termios_1(struct termios __user *u,
      struct ktermios *k)
{
      return copy_to_user(u, k, sizeof(struct termios)) ? -EFAULT : 0;
}

#endif /* defined(__KERNEL__) */

#endif /* _ASM_TERMIOS_H */

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