sys/share/ioctl.c

   1 /* aNetHack 0.0.1       ioctl.c $ANH-Date: 1432512788 2015/05/25 00:13:08 $  $ANH-Branch: master $:$ANH-Revision: 1.12 $ */
   2 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
   3 /* aNetHack may be freely redistributed.  See license for details. */
   4
   5 /* This cannot be part of hack.tty.c (as it was earlier) since on some
   6    systems (e.g. MUNIX) the include files <termio.h> and <sgtty.h>
   7    define the same constants, and the C preprocessor complains. */
   8
   9 #include "hack.h"
  10
  11 #if defined(BSD_JOB_CONTROL) || defined(_BULL_SOURCE)
  12 #ifdef HPUX
  13 #include <bsdtty.h>
  14 #else
  15 #if defined(AIX_31) && !defined(_ALL_SOURCE)
  16 #define _ALL_SOURCE /* causes struct winsize to be present */
  17 #ifdef _AIX32
  18 #include <sys/ioctl.h>
  19 #endif
  20 #endif
  21 #if defined(_BULL_SOURCE)
  22 #include <termios.h>
  23 struct termios termio;
  24 #undef TIMEOUT            /* defined in you.h and sys/tty.h */
  25 #include <sys/tty.h>      /* define winsize */
  26 #include <sys/ttold.h>    /* define struct ltchars */
  27 #include <sys/bsdioctl.h> /* define TIOGWINSZ */
  28 #else
  29 #ifdef LINUX
  30 #include <bsd/sgtty.h>
  31 #else
  32 #include <sgtty.h>
  33 #endif
  34 #endif
  35 #endif
  36 struct ltchars ltchars;
  37 struct ltchars ltchars0 = { -1, -1, -1, -1, -1, -1 }; /* turn all off */
  38 #else
  39
  40 #ifdef POSIX_TYPES
  41 #include <termios.h>
  42 struct termios termio;
  43 #if defined(BSD) || defined(_AIX32) || defined(__linux__)
  44 #if defined(_AIX32) && !defined(_ALL_SOURCE)
  45 #define _ALL_SOURCE
  46 #endif
  47 #include <sys/ioctl.h>
  48 #endif
  49 #else
  50 #include <termio.h> /* also includes part of <sgtty.h> */
  51 #if defined(TCSETS) && !defined(AIX_31)
  52 struct termios termio;
  53 #else
  54 struct termio termio;
  55 #endif
  56 #endif
  57 #if defined(AMIX) || defined(__APPLE__)
  58 #include <sys/ioctl.h>
  59 #endif /* AMIX */
  60 #endif
  61
  62 #ifdef SUSPEND /* BSD isn't alone anymore... */
  63 #include <signal.h>
  64 #endif
  65
  66 #if defined(TIOCGWINSZ)                                    \
  67     && (defined(BSD) || defined(ULTRIX) || defined(AIX_31) \
  68         || defined(_BULL_SOURCE) || defined(SVR4))
  69 #define USE_WIN_IOCTL
  70 #include "tcap.h" /* for LI and CO */
  71 #endif
  72
  73 #ifdef _M_UNIX
  74 extern void NDECL(sco_mapon);
  75 extern void NDECL(sco_mapoff);
  76 #endif
  77 #ifdef __linux__
  78 extern void NDECL(linux_mapon);
  79 extern void NDECL(linux_mapoff);
  80 #endif
  81
  82 #ifdef AUX
  83 void
  84 catch_stp()
  85 {
  86     signal(SIGTSTP, SIG_DFL);
  87     dosuspend();
  88 }
  89 #endif /* AUX */
  90
  91 void
  92 getwindowsz()
  93 {
  94 #ifdef USE_WIN_IOCTL
  95     /*
  96      * ttysize is found on Suns and BSD
  97      * winsize is found on Suns, BSD, and Ultrix
  98      */
  99     struct winsize ttsz;
 100
 101     if (ioctl(fileno(stdin), (int) TIOCGWINSZ, (char *) &ttsz) != -1) {
 102         /*
 103          * Use the kernel's values for lines and columns if it has
 104          * any idea.
 105          */
 106         if (ttsz.ws_row)
 107             LI = ttsz.ws_row;
 108         if (ttsz.ws_col)
 109             CO = ttsz.ws_col;
 110     }
 111 #endif
 112 }
 113
 114 void
 115 getioctls()
 116 {
 117 #ifdef BSD_JOB_CONTROL
 118     (void) ioctl(fileno(stdin), (int) TIOCGLTC, (char *) &ltchars);
 119     (void) ioctl(fileno(stdin), (int) TIOCSLTC, (char *) &ltchars0);
 120 #else
 121 #ifdef POSIX_TYPES
 122     (void) tcgetattr(fileno(stdin), &termio);
 123 #else
 124 #if defined(TCSETS) && !defined(AIX_31)
 125     (void) ioctl(fileno(stdin), (int) TCGETS, &termio);
 126 #else
 127     (void) ioctl(fileno(stdin), (int) TCGETA, &termio);
 128 #endif
 129 #endif
 130 #endif
 131     getwindowsz();
 132 #ifdef AUX
 133     (void) signal(SIGTSTP, catch_stp);
 134 #endif
 135 }
 136
 137 void
 138 setioctls()
 139 {
 140 #ifdef BSD_JOB_CONTROL
 141     (void) ioctl(fileno(stdin), (int) TIOCSLTC, (char *) &ltchars);
 142 #else
 143 #ifdef POSIX_TYPES
 144     (void) tcsetattr(fileno(stdin), TCSADRAIN, &termio);
 145 #else
 146 #if defined(TCSETS) && !defined(AIX_31)
 147     (void) ioctl(fileno(stdin), (int) TCSETSW, &termio);
 148 #else
 149     (void) ioctl(fileno(stdin), (int) TCSETAW, &termio);
 150 #endif
 151 #endif
 152 #endif
 153 }
 154
 155 #ifdef SUSPEND /* No longer implies BSD */
 156 int
 157 dosuspend()
 158 {
 159 #ifdef SYSCF
 160     /* NB: check_user_string() is port-specific. */
 161     if (!sysopt.shellers || !sysopt.shellers[0]
 162         || !check_user_string(sysopt.shellers)) {
 163         Norep("Suspend command not available.");
 164         return 0;
 165     }
 166 #endif
 167 #if defined(SIGTSTP) && !defined(NO_SIGNAL)
 168     if (signal(SIGTSTP, SIG_IGN) == SIG_DFL) {
 169         suspend_nhwindows((char *) 0);
 170 #ifdef _M_UNIX
 171         sco_mapon();
 172 #endif
 173 #ifdef __linux__
 174         linux_mapon();
 175 #endif
 176         (void) signal(SIGTSTP, SIG_DFL);
 177 #ifdef AUX
 178         (void) kill(0, SIGSTOP);
 179 #else
 180         (void) kill(0, SIGTSTP);
 181 #endif
 182 #ifdef _M_UNIX
 183         sco_mapoff();
 184 #endif
 185 #ifdef __linux__
 186         linux_mapoff();
 187 #endif
 188         resume_nhwindows();
 189     } else {
 190         pline("I don't think your shell has job control.");
 191     }
 192 #else
 193     pline("Sorry, it seems we have no SIGTSTP here.  Try ! or S.");
 194 #endif
 195     return (0);
 196 }
 197 #endif /* SUSPEND */