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termios.h

#ifndef _ALPHA_TERMIOS_H
#define _ALPHA_TERMIOS_H

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

00007 struct sgttyb {
      char  sg_ispeed;
      char  sg_ospeed;
      char  sg_erase;
      char  sg_kill;
      short sg_flags;
};

00015 struct tchars {
      char  t_intrc;
      char  t_quitc;
      char  t_startc;
      char  t_stopc;
      char  t_eofc;
      char  t_brkc;
};

00024 struct ltchars {
      char  t_suspc;
      char  t_dsuspc;
      char  t_rprntc;
      char  t_flushc;
      char  t_werasc;
      char  t_lnextc;
};

00033 struct winsize {
      unsigned short ws_row;
      unsigned short ws_col;
      unsigned short ws_xpixel;
      unsigned short ws_ypixel;
};

#define NCC 8
00041 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 */
      unsigned char c_line;         /* line discipline */
      unsigned char c_cc[NCC];      /* control characters */
};

/*
 * c_cc characters in the termio structure.  Oh, how I love being
 * backwardly compatible.  Notice that character 4 and 5 are
 * interpreted differently depending on whether ICANON is set in
 * c_lflag.  If it's set, they are used as _VEOF and _VEOL, otherwise
 * as _VMIN and V_TIME.  This is for compatibility with OSF/1 (which
 * is compatible with sysV)...
 */
#define _VINTR    0
#define _VQUIT    1
#define _VERASE   2
#define _VKILL    3
#define _VEOF     4
#define _VMIN     4
#define _VEOL     5
#define _VTIME    5
#define _VEOL2    6
#define _VSWTC    7

#ifdef __KERNEL__
/*    eof=^D            eol=\0            eol2=\0           erase=del
      werase=^W   kill=^U           reprint=^R  sxtc=\0
      intr=^C           quit=^\           susp=^Z           <OSF/1 VDSUSP>
      start=^Q    stop=^S           lnext=^V    discard=^U
      vmin=\1           vtime=\0
*/
#define INIT_C_CC "\004\000\000\177\027\025\022\000\003\034\032\000\021\023\026\025\001\000"

/*
 * Translate a "termio" structure into a "termios". Ugh.
 */

#define user_termio_to_kernel_termios(a_termios, u_termio)              \
({                                                          \
      struct ktermios *k_termios = (a_termios);                   \
      struct termio k_termio;                                     \
      int canon, ret;                                             \
                                                            \
      ret = copy_from_user(&k_termio, u_termio, sizeof(k_termio));            \
      if (!ret) {                                           \
            /* Overwrite only the low bits.  */                   \
            *(unsigned short *)&k_termios->c_iflag = k_termio.c_iflag;  \
            *(unsigned short *)&k_termios->c_oflag = k_termio.c_oflag;  \
            *(unsigned short *)&k_termios->c_cflag = k_termio.c_cflag;  \
            *(unsigned short *)&k_termios->c_lflag = k_termio.c_lflag;  \
            canon = k_termio.c_lflag & ICANON;                    \
                                                            \
            k_termios->c_cc[VINTR]  = k_termio.c_cc[_VINTR];            \
            k_termios->c_cc[VQUIT]  = k_termio.c_cc[_VQUIT];            \
            k_termios->c_cc[VERASE] = k_termio.c_cc[_VERASE];           \
            k_termios->c_cc[VKILL]  = k_termio.c_cc[_VKILL];            \
            k_termios->c_cc[VEOL2]  = k_termio.c_cc[_VEOL2];            \
            k_termios->c_cc[VSWTC]  = k_termio.c_cc[_VSWTC];            \
            k_termios->c_cc[canon ? VEOF : VMIN]  = k_termio.c_cc[_VEOF];     \
            k_termios->c_cc[canon ? VEOL : VTIME] = k_termio.c_cc[_VEOL];     \
      }                                                     \
      ret;                                                  \
})

/*
 * Translate a "termios" structure into a "termio". Ugh.
 *
 * Note the "fun" _VMIN overloading.
 */
#define kernel_termios_to_user_termio(u_termio, a_termios)        \
({                                                    \
      struct ktermios *k_termios = (a_termios);             \
      struct termio k_termio;                               \
      int canon;                                      \
                                                      \
      k_termio.c_iflag = k_termios->c_iflag;                      \
      k_termio.c_oflag = k_termios->c_oflag;                      \
      k_termio.c_cflag = k_termios->c_cflag;                      \
      canon = (k_termio.c_lflag = k_termios->c_lflag) & ICANON;   \
                                                      \
      k_termio.c_line = k_termios->c_line;                        \
      k_termio.c_cc[_VINTR]  = k_termios->c_cc[VINTR];            \
      k_termio.c_cc[_VQUIT]  = k_termios->c_cc[VQUIT];            \
      k_termio.c_cc[_VERASE] = k_termios->c_cc[VERASE];           \
      k_termio.c_cc[_VKILL]  = k_termios->c_cc[VKILL];            \
      k_termio.c_cc[_VEOF]   = k_termios->c_cc[canon ? VEOF : VMIN];    \
      k_termio.c_cc[_VEOL]   = k_termios->c_cc[canon ? VEOL : VTIME];   \
      k_termio.c_cc[_VEOL2]  = k_termios->c_cc[VEOL2];            \
      k_termio.c_cc[_VSWTC]  = k_termios->c_cc[VSWTC];            \
                                                      \
      copy_to_user(u_termio, &k_termio, sizeof(k_termio));        \
})

#define user_termios_to_kernel_termios(k, u) \
      copy_from_user(k, u, sizeof(struct termios))

#define kernel_termios_to_user_termios(u, k) \
      copy_to_user(u, k, sizeof(struct termios))

#endif      /* __KERNEL__ */

#endif      /* _ALPHA_TERMIOS_H */

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