kernel/arch/alpha/include/asm/termios.h

   1 #ifndef _ALPHA_TERMIOS_H
   2 #define _ALPHA_TERMIOS_H
   3
   4 #include <uapi/asm/termios.h>
   5
   6 /*      eof=^D          eol=\0          eol2=\0         erase=del
   7         werase=^W       kill=^U         reprint=^R      sxtc=\0
   8         intr=^C         quit=^\         susp=^Z         <OSF/1 VDSUSP>
   9         start=^Q        stop=^S         lnext=^V        discard=^U
  10         vmin=\1         vtime=\0
  11 */
  12 #define INIT_C_CC "\004\000\000\177\027\025\022\000\003\034\032\000\021\023\026\025\001\000"
  13
  14 /*
  15  * Translate a "termio" structure into a "termios". Ugh.
  16  */
  17
  18 #define user_termio_to_kernel_termios(a_termios, u_termio)                      \
  19 ({                                                                              \
  20         struct ktermios *k_termios = (a_termios);                               \
  21         struct termio k_termio;                                                 \
  22         int canon, ret;                                                         \
  23                                                                                 \
  24         ret = copy_from_user(&k_termio, u_termio, sizeof(k_termio));            \
  25         if (!ret) {                                                             \
  26                 /* Overwrite only the low bits.  */                             \
  27                 *(unsigned short *)&k_termios->c_iflag = k_termio.c_iflag;      \
  28                 *(unsigned short *)&k_termios->c_oflag = k_termio.c_oflag;      \
  29                 *(unsigned short *)&k_termios->c_cflag = k_termio.c_cflag;      \
  30                 *(unsigned short *)&k_termios->c_lflag = k_termio.c_lflag;      \
  31                 canon = k_termio.c_lflag & ICANON;                              \
  32                                                                                 \
  33                 k_termios->c_cc[VINTR]  = k_termio.c_cc[_VINTR];                \
  34                 k_termios->c_cc[VQUIT]  = k_termio.c_cc[_VQUIT];                \
  35                 k_termios->c_cc[VERASE] = k_termio.c_cc[_VERASE];               \
  36                 k_termios->c_cc[VKILL]  = k_termio.c_cc[_VKILL];                \
  37                 k_termios->c_cc[VEOL2]  = k_termio.c_cc[_VEOL2];                \
  38                 k_termios->c_cc[VSWTC]  = k_termio.c_cc[_VSWTC];                \
  39                 k_termios->c_cc[canon ? VEOF : VMIN]  = k_termio.c_cc[_VEOF];   \
  40                 k_termios->c_cc[canon ? VEOL : VTIME] = k_termio.c_cc[_VEOL];   \
  41         }                                                                       \
  42         ret;                                                                    \
  43 })
  44
  45 /*
  46  * Translate a "termios" structure into a "termio". Ugh.
  47  *
  48  * Note the "fun" _VMIN overloading.
  49  */
  50 #define kernel_termios_to_user_termio(u_termio, a_termios)              \
  51 ({                                                                      \
  52         struct ktermios *k_termios = (a_termios);                       \
  53         struct termio k_termio;                                         \
  54         int canon;                                                      \
  55                                                                         \
  56         k_termio.c_iflag = k_termios->c_iflag;                          \
  57         k_termio.c_oflag = k_termios->c_oflag;                          \
  58         k_termio.c_cflag = k_termios->c_cflag;                          \
  59         canon = (k_termio.c_lflag = k_termios->c_lflag) & ICANON;       \
  60                                                                         \
  61         k_termio.c_line = k_termios->c_line;                            \
  62         k_termio.c_cc[_VINTR]  = k_termios->c_cc[VINTR];                \
  63         k_termio.c_cc[_VQUIT]  = k_termios->c_cc[VQUIT];                \
  64         k_termio.c_cc[_VERASE] = k_termios->c_cc[VERASE];               \
  65         k_termio.c_cc[_VKILL]  = k_termios->c_cc[VKILL];                \
  66         k_termio.c_cc[_VEOF]   = k_termios->c_cc[canon ? VEOF : VMIN];  \
  67         k_termio.c_cc[_VEOL]   = k_termios->c_cc[canon ? VEOL : VTIME]; \
  68         k_termio.c_cc[_VEOL2]  = k_termios->c_cc[VEOL2];                \
  69         k_termio.c_cc[_VSWTC]  = k_termios->c_cc[VSWTC];                \
  70                                                                         \
  71         copy_to_user(u_termio, &k_termio, sizeof(k_termio));            \
  72 })
  73
  74 #define user_termios_to_kernel_termios(k, u) \
  75         copy_from_user(k, u, sizeof(struct termios))
  76
  77 #define kernel_termios_to_user_termios(u, k) \
  78         copy_to_user(u, k, sizeof(struct termios))
  79
  80 #endif  /* _ALPHA_TERMIOS_H */