arch/sparc/include/asm/termios.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _SPARC_TERMIOS_H
   3 #define _SPARC_TERMIOS_H
   4
   5 #include <uapi/asm/termios.h>
   6
   7
   8 /*
   9  * c_cc characters in the termio structure.  Oh, how I love being
  10  * backwardly compatible.  Notice that character 4 and 5 are
  11  * interpreted differently depending on whether ICANON is set in
  12  * c_lflag.  If it's set, they are used as _VEOF and _VEOL, otherwise
  13  * as _VMIN and V_TIME.  This is for compatibility with OSF/1 (which
  14  * is compatible with sysV)...
  15  */
  16 #define _VMIN   4
  17 #define _VTIME  5
  18
  19 /*      intr=^C         quit=^\         erase=del       kill=^U
  20         eof=^D          eol=\0          eol2=\0         sxtc=\0
  21         start=^Q        stop=^S         susp=^Z         dsusp=^Y
  22         reprint=^R      discard=^U      werase=^W       lnext=^V
  23         vmin=\1         vtime=\0
  24 */
  25 #define INIT_C_CC "\003\034\177\025\004\000\000\000\021\023\032\031\022\025\027\026\001"
  26
  27 /*
  28  * Translate a "termio" structure into a "termios". Ugh.
  29  */
  30 #define user_termio_to_kernel_termios(termios, termio) \
  31 ({ \
  32         unsigned short tmp; \
  33         int err; \
  34         err = get_user(tmp, &(termio)->c_iflag); \
  35         (termios)->c_iflag = (0xffff0000 & ((termios)->c_iflag)) | tmp; \
  36         err |= get_user(tmp, &(termio)->c_oflag); \
  37         (termios)->c_oflag = (0xffff0000 & ((termios)->c_oflag)) | tmp; \
  38         err |= get_user(tmp, &(termio)->c_cflag); \
  39         (termios)->c_cflag = (0xffff0000 & ((termios)->c_cflag)) | tmp; \
  40         err |= get_user(tmp, &(termio)->c_lflag); \
  41         (termios)->c_lflag = (0xffff0000 & ((termios)->c_lflag)) | tmp; \
  42         err |= copy_from_user((termios)->c_cc, (termio)->c_cc, NCC); \
  43         err; \
  44 })
  45
  46 /*
  47  * Translate a "termios" structure into a "termio". Ugh.
  48  *
  49  * Note the "fun" _VMIN overloading.
  50  */
  51 #define kernel_termios_to_user_termio(termio, termios) \
  52 ({ \
  53         int err; \
  54         err  = put_user((termios)->c_iflag, &(termio)->c_iflag); \
  55         err |= put_user((termios)->c_oflag, &(termio)->c_oflag); \
  56         err |= put_user((termios)->c_cflag, &(termio)->c_cflag); \
  57         err |= put_user((termios)->c_lflag, &(termio)->c_lflag); \
  58         err |= put_user((termios)->c_line,  &(termio)->c_line); \
  59         err |= copy_to_user((termio)->c_cc, (termios)->c_cc, NCC); \
  60         if (!((termios)->c_lflag & ICANON)) { \
  61                 err |= put_user((termios)->c_cc[VMIN], &(termio)->c_cc[_VMIN]); \
  62                 err |= put_user((termios)->c_cc[VTIME], &(termio)->c_cc[_VTIME]); \
  63         } \
  64         err; \
  65 })
  66
  67 #define user_termios_to_kernel_termios(k, u) \
  68 ({ \
  69         int err; \
  70         err  = get_user((k)->c_iflag, &(u)->c_iflag); \
  71         err |= get_user((k)->c_oflag, &(u)->c_oflag); \
  72         err |= get_user((k)->c_cflag, &(u)->c_cflag); \
  73         err |= get_user((k)->c_lflag, &(u)->c_lflag); \
  74         err |= get_user((k)->c_line,  &(u)->c_line); \
  75         err |= copy_from_user((k)->c_cc, (u)->c_cc, NCCS); \
  76         if ((k)->c_lflag & ICANON) { \
  77                 err |= get_user((k)->c_cc[VEOF], &(u)->c_cc[VEOF]); \
  78                 err |= get_user((k)->c_cc[VEOL], &(u)->c_cc[VEOL]); \
  79         } else { \
  80                 err |= get_user((k)->c_cc[VMIN],  &(u)->c_cc[_VMIN]); \
  81                 err |= get_user((k)->c_cc[VTIME], &(u)->c_cc[_VTIME]); \
  82         } \
  83         err |= get_user((k)->c_ispeed,  &(u)->c_ispeed); \
  84         err |= get_user((k)->c_ospeed,  &(u)->c_ospeed); \
  85         err; \
  86 })
  87
  88 #define kernel_termios_to_user_termios(u, k) \
  89 ({ \
  90         int err; \
  91         err  = put_user((k)->c_iflag, &(u)->c_iflag); \
  92         err |= put_user((k)->c_oflag, &(u)->c_oflag); \
  93         err |= put_user((k)->c_cflag, &(u)->c_cflag); \
  94         err |= put_user((k)->c_lflag, &(u)->c_lflag); \
  95         err |= put_user((k)->c_line, &(u)->c_line); \
  96         err |= copy_to_user((u)->c_cc, (k)->c_cc, NCCS); \
  97         if (!((k)->c_lflag & ICANON)) { \
  98                 err |= put_user((k)->c_cc[VMIN],  &(u)->c_cc[_VMIN]); \
  99                 err |= put_user((k)->c_cc[VTIME], &(u)->c_cc[_VTIME]); \
 100         } else { \
 101                 err |= put_user((k)->c_cc[VEOF], &(u)->c_cc[VEOF]); \
 102                 err |= put_user((k)->c_cc[VEOL], &(u)->c_cc[VEOL]); \
 103         } \
 104         err |= put_user((k)->c_ispeed, &(u)->c_ispeed); \
 105         err |= put_user((k)->c_ospeed, &(u)->c_ospeed); \
 106         err; \
 107 })
 108
 109 #define user_termios_to_kernel_termios_1(k, u) \
 110 ({ \
 111         int err; \
 112         err  = get_user((k)->c_iflag, &(u)->c_iflag); \
 113         err |= get_user((k)->c_oflag, &(u)->c_oflag); \
 114         err |= get_user((k)->c_cflag, &(u)->c_cflag); \
 115         err |= get_user((k)->c_lflag, &(u)->c_lflag); \
 116         err |= get_user((k)->c_line,  &(u)->c_line); \
 117         err |= copy_from_user((k)->c_cc, (u)->c_cc, NCCS); \
 118         if ((k)->c_lflag & ICANON) { \
 119                 err |= get_user((k)->c_cc[VEOF], &(u)->c_cc[VEOF]); \
 120                 err |= get_user((k)->c_cc[VEOL], &(u)->c_cc[VEOL]); \
 121         } else { \
 122                 err |= get_user((k)->c_cc[VMIN],  &(u)->c_cc[_VMIN]); \
 123                 err |= get_user((k)->c_cc[VTIME], &(u)->c_cc[_VTIME]); \
 124         } \
 125         err; \
 126 })
 127
 128 #define kernel_termios_to_user_termios_1(u, k) \
 129 ({ \
 130         int err; \
 131         err  = put_user((k)->c_iflag, &(u)->c_iflag); \
 132         err |= put_user((k)->c_oflag, &(u)->c_oflag); \
 133         err |= put_user((k)->c_cflag, &(u)->c_cflag); \
 134         err |= put_user((k)->c_lflag, &(u)->c_lflag); \
 135         err |= put_user((k)->c_line, &(u)->c_line); \
 136         err |= copy_to_user((u)->c_cc, (k)->c_cc, NCCS); \
 137         if (!((k)->c_lflag & ICANON)) { \
 138                 err |= put_user((k)->c_cc[VMIN],  &(u)->c_cc[_VMIN]); \
 139                 err |= put_user((k)->c_cc[VTIME], &(u)->c_cc[_VTIME]); \
 140         } else { \
 141                 err |= put_user((k)->c_cc[VEOF], &(u)->c_cc[VEOF]); \
 142                 err |= put_user((k)->c_cc[VEOL], &(u)->c_cc[VEOL]); \
 143         } \
 144         err; \
 145 })
 146
 147 #endif /* _SPARC_TERMIOS_H */