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428
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1 /* systty.h - System-dependent definitions for terminals.
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2 Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: FSF 19.30. */
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22
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440
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23 #ifndef INCLUDED_systty_h_
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24 #define INCLUDED_systty_h_
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428
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25
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26 #ifdef HAVE_TERMIOS
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27 # define HAVE_TCATTR
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28 #endif
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29
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30
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31 /* Include the proper files. */
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32
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33 #ifdef HAVE_UNISTD_H
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34 #include <unistd.h>
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35 #endif
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36
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37 /* XEmacs: TERMIOS is mo' better than TERMIO so we use it if it's
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38 there. Since TERMIO is backward-compatibility stuff if both it
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39 and TERMIOS exist, it's more likely to be broken. */
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40
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41 #if defined (HAVE_TERMIOS)
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42
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43 /***** (1) The TERMIOS way (POSIX style) *****/
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44
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45 # if defined (_AIX) && defined (_I386)
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46 # include <termios.h> /* termios.h needs to be before termio.h */
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47 # include <termio.h>
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48 # else
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49 # if !defined (NO_TERMIO)
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50 # include <termio.h>
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51 # endif
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52 # include <termios.h>
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53 # endif /* _AIX && _I386 */
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54 # ifndef INCLUDED_FCNTL
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55 # define INCLUDED_FCNTL
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56 # include <fcntl.h>
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57 # endif
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58
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59 #elif defined (HAVE_TERMIO)
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60
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61 /***** (2) The TERMIO way (system V style) *****/
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62
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63 # ifdef __DGUX
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64 # include <sys/ioctl.h>
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65 # endif
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66 # ifndef NO_TERMIO
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67 # include <termio.h>
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68 # endif /* not NO_TERMIO */
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69 # ifndef INCLUDED_FCNTL
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70 # define INCLUDED_FCNTL
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71 # include <fcntl.h>
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72 # endif
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73
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442
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74 #elif defined (WIN32_NATIVE)
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428
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75
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442
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76 /***** (3) The WIN32_NATIVE way *****/
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428
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77
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78 /* Nothing doing */
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79
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80 #else
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81
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82 /***** (4) The BSD way *****/
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83
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84 # ifdef linux /* XEmacs addition -- necessary? */
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85 # include <bsd/sgtty.h>
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86 # else
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87 # include <sgtty.h>
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88 # endif
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89
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90
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91 #endif /* HAVE_TERMIOS */
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92
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93 /* XEmacs: I don't think we need the following crap. */
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94 #ifdef __GNU_LIBRARY__
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95 #include <termios.h>
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96 #endif
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97
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98 /* Formerly there was a conditional that included sys/filio.h if
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99 USG5_4 was defined, but this is already included in s/usg5-4.h */
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100
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101 /* Generally useful to include this file: */
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102
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103 /* But Sun OS has broken include files and doesn't want it included */
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442
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104 #if !defined (WIN32_NATIVE) && !defined (SUNOS4)
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428
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105 # include <sys/ioctl.h>
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106 #endif
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107 /* UNIPLUS systems may have FIONREAD. */
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108 #ifdef UNIPLUS
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109 #include <sys.ioctl.h>
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110 #endif
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111
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112
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113 /* ----------------------------------------------------- */
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114 /* miscellaneous includes */
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115 /* ----------------------------------------------------- */
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116
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117 #ifdef AIXHFT
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118 /* Get files for keyboard remapping */
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119 #define HFNKEYS 2
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120 #include <sys/hft.h>
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121 #include <sys/devinfo.h>
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122 #endif
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123
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124 /* XEmacs: We don't support BSD 4.1 any more */
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125
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126 #ifdef NEED_BSDTTY
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127 #include <sys/bsdtty.h>
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128 #endif
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129
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130 /* Include files for PTY's */
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131
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132 #if defined (HPUX) && defined (HAVE_PTYS)
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133 #include <sys/ptyio.h>
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134 #endif
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135
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136 #ifdef AIX
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137 #include <sys/pty.h>
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138 #endif /* AIX */
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139
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140 #ifdef SYSV_PTYS
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141 # include <sys/types.h>
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142 # include <sys/tty.h>
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143 # ifdef titan
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144 # include <sys/ttyhw.h>
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145 # include <sys/stream.h>
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146 # endif
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147 # ifndef NO_PTY_H
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148 # include <sys/pty.h>
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149 # endif
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150 #endif
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151
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152 /* XEmacs: removed some random if defined (pfa) crap for FASYNC (SIGIO).
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153 We've cleaned SIGIO up. */
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154
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155
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156 /* ----------------------------------------------------- */
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157 /* inhibiting particular features */
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158 /* ----------------------------------------------------- */
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159
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160
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161 #if defined (XENIX) || defined (BROKEN_TIOCGETC)
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162 #undef TIOCGETC /* Avoid confusing some conditionals that test this. */
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163 #endif
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164
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165 /* XEmacs: SIGIO is cleaned up so we remove the crap here that messes
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166 with it (and FIONREAD and FASYNC, which are related). */
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167
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168 #ifdef BROKEN_TIOCGWINSZ /* XEmacs addition */
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169 #undef TIOCGWINSZ
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170 #undef TIOCSWINSZ
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171 #endif
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172
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173 /* On TERMIOS systems, the tcmumbleattr calls take care of these
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174 parameters, and it's a bad idea to use them (on AIX, it makes the
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175 tty hang for a long time). */
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176 #if defined (TIOCGLTC) && !defined (HAVE_TERMIOS)
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177 #define HAVE_LTCHARS
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178 #endif
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179
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180 #if defined (TIOCGETC) && !defined (HAVE_TERMIOS)
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181 #define HAVE_TCHARS
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182 #endif
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183
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184
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185 /* ----------------------------------------------------- */
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186 /* disabling terminal functions */
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187 /* ----------------------------------------------------- */
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188
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189 /* Try to establish the correct character to disable terminal functions
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190 in a system-independent manner.
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191 We use the POSIX standard way to do this, and emulate on other systems. */
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192
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193 #ifndef _POSIX_VDISABLE
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194 # if defined CDEL
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195 # define _POSIX_VDISABLE CDEL
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196 # else
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197 # define _POSIX_VDISABLE 255
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198 # endif
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199 #endif /* ! _POSIX_VDISABLE */
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200
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201
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202 /* ----------------------------------------------------- */
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203 /* Get the number of characters queued for output */
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204 /* ----------------------------------------------------- */
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205
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206 /* EMACS_OUTQSIZE(FD, int *SIZE) stores the number of characters
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207 queued for output to the terminal FD in *SIZE, if FD is a tty.
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208 Returns -1 if there was an error (i.e. FD is not a tty), 0
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209 otherwise. */
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210 #ifdef TIOCOUTQ
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211 #define EMACS_OUTQSIZE(fd, size) ioctl (fd, TIOCOUTQ, size)
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212 #endif
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213
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214 #ifdef HAVE_TERMIO
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215 #ifdef TCOUTQ
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216 #undef EMACS_OUTQSIZE
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217 #define EMACS_OUTQSIZE(fd, size) ioctl (fd, TCOUTQ, size)
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218 #endif
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219 #endif
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220
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221
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222 /* -------------------------------------------------------------------- */
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223 /* Manipulate a terminal's current (foreground) process group */
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224 /* -------------------------------------------------------------------- */
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225
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442
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226 /* EMACS_GET_TTY_PGRP(int FD, pid_t *PGID) sets *PGID to the terminal
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227 FD's current foreground process group. Return -1 if there is an error.
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228
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229 EMACS_SET_TTY_PGRP(int FD, pid_t *PGID) sets the terminal FD's current
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230 foreground process group to *PGID. Return -1 if there is an error.
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428
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231
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442
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232 We prefer using the ioctl (BSD) interface instead of its Posix
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233 replacement tgetpgrp/tcsetpgrp since that is documented as being
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234 restricted to processes sharing the same controlling tty. */
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428
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235
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442
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236 #if defined (TIOCGPGRP)
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428
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237
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442
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238 #define EMACS_GET_TTY_PROCESS_GROUP(fd, pgid) ioctl (fd, TIOCGPGRP, pgid)
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239 #define EMACS_SET_TTY_PROCESS_GROUP(fd, pgid) ioctl (fd, TIOCSPGRP, pgid)
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240
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241 #elif defined (HAVE_TCGETPGRP)
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428
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242
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442
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243 #define EMACS_GET_TTY_PROCESS_GROUP(fd, pgid) (*(pgid) = tcgetpgrp (fd))
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244 #define EMACS_SET_TTY_PROCESS_GROUP(fd, pgid) tcsetpgrp (fd, *(pgid))
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428
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245
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442
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246 #else
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428
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247
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442
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248 /* Just ignore this for now and hope for the best */
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249 #define EMACS_GET_TTY_PROCESS_GROUP(fd, pgid) 0
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250 #define EMACS_SET_TTY_PROCESS_GROUP(fd, pgif) 0
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428
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251
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252 #endif
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253
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254 /* EMACS_GETPGRP (arg) returns the process group of the terminal. */
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255
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256 #ifdef GETPGRP_VOID
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257 #define EMACS_GETPGRP(x) getpgrp()
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258 #else
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259 #define EMACS_GETPGRP(x) getpgrp(x)
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260 #endif /* GETPGRP_VOID */
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261
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262 /* XEmacs backward-compatibility. Is 0 always a reasonable argument? */
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263 #define EMACS_GET_PROCESS_GROUP() EMACS_GETPGRP (0)
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264
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265 /* XEmacs addition? */
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266
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267 /* EMACS_SEPARATE_PROCESS_GROUP () creates a separate process group for the
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268 running process. */
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269
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270 /* EMACS_SET_PROCESS_GROUP () sets our process group as specified. */
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271
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272 /* POSIX calls for setpgid(), so we use it if it's available.
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273 Otherwise use setpgrp(), in USG or BSD flavor. Note that
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274 on newer systems, setpgrp() has unwanted effects (e.g.
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275 creating a new session), so we want to avoid its use
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276 if possible.
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277
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278 NOTE: On some older systems, we should consider using setpgrp2()
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279 if it exists. This is sufficiently rare, though, that there
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280 seems no point in autodetecting it. Currently dgux.h is the
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281 only place where this has to be munged. */
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282
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283 #if defined (HAVE_SETPGID)
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284 # define EMACS_SEPARATE_PROCESS_GROUP() setpgid (0, 0)
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285 # define EMACS_SET_PROCESS_GROUP(pg) setpgid (0, pg)
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286 #elif defined (USG)
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287 # define EMACS_SEPARATE_PROCESS_GROUP() setpgrp ()
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288 /* old (pre-SVR4) USG's don't provide any way to do this.
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289 No big loss -- it just means that ^Z won't work right
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290 if we're run from sh. */
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291 # define EMACS_SET_PROCESS_GROUP(pg)
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442
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292 #elif defined(MINGW)
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432
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293 # define EMACS_SEPARATE_PROCESS_GROUP()
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428
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294 #else
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295 /* Under NeXTstep, a process group of 0 is not the same as specifying
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296 your own process ID, so we go ahead and specify it explicitly. */
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297 # define EMACS_SEPARATE_PROCESS_GROUP() setpgrp (0, getpid ())
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298 # define EMACS_SET_PROCESS_GROUP(pg) setpgrp (0, pg)
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299 #endif
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300
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301
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302 /* --------------------------------------------------------- */
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303 /* Manipulate a TTY's input/output processing parameters */
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304 /* --------------------------------------------------------- */
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305
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306 /* struct emacs_tty is a structure used to hold the current tty
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307 parameters. If the terminal has several structures describing its
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308 state, for example a struct tchars, a struct sgttyb, a struct
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309 tchars, a struct ltchars, and a struct pagechars, struct
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310 emacs_tty should contain an element for each parameter struct
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311 that Emacs may change.
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312
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430
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313 emacs_get_tty (int FD, struct emacs_tty *P) stores the parameters
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428
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314 of the tty on FD in *P. Return zero if all's well, or -1 if we ran
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315 into an error we couldn't deal with.
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316
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430
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317 emacs_set_tty (int FD, struct emacs_tty *P, int flushp)
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428
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318 sets the parameters of the tty on FD according to the contents of
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319 *P. If flushp is non-zero, we discard queued input to be
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320 written before making the change.
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321 Return 0 if all went well, and -1 if anything failed.
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322
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323 EMACS_TTY_TABS_OK (struct emacs_tty *P) is false iff the kernel
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324 expands tabs to spaces upon output; in that case, there is no
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325 advantage to using tabs over spaces. */
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326
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327
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328 /* For each tty parameter structure that Emacs might want to save and restore,
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329 - include an element for it in this structure, and
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330 - extend the emacs_{get,set}_tty functions in sysdep.c to deal with the
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331 new members. */
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332
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333 struct emacs_tty {
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334
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335 /* There is always one of the following elements, so there is no need
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336 for dummy get and set definitions. */
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337 #ifdef HAVE_TCATTR
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338 struct termios main;
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339 #else /* !HAVE_TCATTR */
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340 #ifdef HAVE_TERMIO
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341 struct termio main;
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342 #else /* !HAVE_TERMIO */
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442
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343 #ifdef WIN32_NATIVE
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428
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344 int main;
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442
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345 #else /* not WIN32_NATIVE */
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428
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346 struct sgttyb main;
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442
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347 #endif /* not WIN32_NATIVE */
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428
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348 #endif /* !HAVE_TERMIO */
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349 #endif /* !HAVE_TCATTR */
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350
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351 /* If we have TERMIOS, we don't need to do this - they're taken care of
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352 by the tc*attr calls. */
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353 #ifndef HAVE_TERMIOS
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354 #ifdef HAVE_LTCHARS
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355 struct ltchars ltchars;
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356 #endif /* HAVE_LTCHARS */
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357
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358 #ifdef HAVE_TCHARS
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359 struct tchars tchars;
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360 int lmode;
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361 #endif /* HAVE_TCHARS */
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362 #endif /* HAVE_TERMIOS */
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363 };
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364
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430
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365 int emacs_get_tty (int fd, struct emacs_tty *settings);
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366 int emacs_set_tty (int fd, struct emacs_tty *settings, int flushp);
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428
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367
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368
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369 /* --------------------------------------------------------- */
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370 /* Define EMACS_TTY_TABS_OK */
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371 /* --------------------------------------------------------- */
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372
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513
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373 #if defined (TABDLY) && defined (TAB3)
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374 # define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
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375 #elif defined (OXTABS)
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376 # define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & OXTABS) != OXTABS)
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428
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377 #else
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513
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378 # define EMACS_TTY_TABS_OK(p) 1
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379 #endif
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428
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380
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440
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381 #endif /* INCLUDED_systty_h_ */
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