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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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23 #ifndef _XEMACS_SYSTTY_H_
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24 #define _XEMACS_SYSTTY_H_
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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 /* If we defined these before and we are about to redefine them,
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31 prevent alarming warnings. */
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32 #ifdef BSD_TERMIOS
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33 #undef NL0
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34 #undef NL1
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35 #undef CR0
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36 #undef CR1
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37 #undef CR2
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38 #undef CR3
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39 #undef TAB0
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40 #undef TAB1
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41 #undef TAB2
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42 #undef XTABS
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43 #undef BS0
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44 #undef BS1
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45 #undef FF0
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46 #undef FF1
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47 #undef ECHO
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48 #undef NOFLSH
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49 #undef TOSTOP
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50 #undef FLUSHO
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51 #undef PENDIN
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52 #endif
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53
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54 /* Include the proper files. */
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55
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56 #ifdef HAVE_UNISTD_H
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57 #include <unistd.h>
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58 #endif
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59
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60 /* XEmacs: TERMIOS is mo' better than TERMIO so we use it if it's
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61 there. Since TERMIO is backward-compatibility stuff if both it
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62 and TERMIOS exist, it's more likely to be broken. */
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63
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64 #if defined (HAVE_TERMIOS)
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65
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66 /***** (1) The TERMIOS way (POSIX style) *****/
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67
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68 # if defined (_AIX) && defined (_I386)
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69 # include <termios.h> /* termios.h needs to be before termio.h */
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70 # include <termio.h>
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71 # else
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72 # if !defined (NO_TERMIO)
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73 # include <termio.h>
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74 # endif
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75 # include <termios.h>
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76 # endif /* _AIX && _I386 */
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77 # ifndef INCLUDED_FCNTL
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78 # define INCLUDED_FCNTL
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79 # include <fcntl.h>
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80 # endif
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81
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82 #elif defined (HAVE_TERMIO)
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83
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84 /***** (2) The TERMIO way (system V style) *****/
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85
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86 # ifdef __DGUX
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87 # include <sys/ioctl.h>
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88 # endif
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89 # ifndef NO_TERMIO
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90 # include <termio.h>
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91 # endif /* not NO_TERMIO */
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92 # ifndef INCLUDED_FCNTL
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93 # define INCLUDED_FCNTL
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94 # include <fcntl.h>
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95 # endif
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96
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97 #elif defined (DOS_NT)
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98
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99 /***** (3) The MSDOS/NT way *****/
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100
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101 /* Nothing doing */
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102
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103 #else
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104
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105 /***** (4) The BSD way *****/
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106
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107 # ifdef linux /* XEmacs addition -- necessary? */
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108 # include <bsd/sgtty.h>
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109 # else
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110 # include <sgtty.h>
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111 # endif
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112
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113
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114 #endif /* HAVE_TERMIOS */
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115
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116 /* XEmacs: I don't think we need the following crap. */
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117 #ifdef __GNU_LIBRARY__
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118 #include <termios.h>
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119 #endif
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120
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121 /* Formerly there was a conditional that included sys/filio.h if
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122 USG5_4 was defined, but this is already included in s/usg5-4.h */
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123
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124 /* Generally useful to include this file: */
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125
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126 /* But Sun OS has broken include files and doesn't want it included */
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127 #if !defined (DOS_NT) && !defined (WIN32) && !defined (SUNOS4)
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128 # include <sys/ioctl.h>
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129 #endif
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130 /* UNIPLUS systems may have FIONREAD. */
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131 #ifdef UNIPLUS
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132 #include <sys.ioctl.h>
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133 #endif
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134
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135
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136 /* ----------------------------------------------------- */
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137 /* miscellaneous includes */
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138 /* ----------------------------------------------------- */
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139
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140 #ifdef AIXHFT
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141 /* Get files for keyboard remapping */
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142 #define HFNKEYS 2
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143 #include <sys/hft.h>
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144 #include <sys/devinfo.h>
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145 #endif
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146
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147 /* XEmacs: We don't support BSD 4.1 any more */
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148
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149 #ifdef NEED_BSDTTY
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150 #include <sys/bsdtty.h>
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151 #endif
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152
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153 /* Include files for PTY's */
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154
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155 #if defined (HPUX) && defined (HAVE_PTYS)
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156 #include <sys/ptyio.h>
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157 #endif
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158
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159 #ifdef AIX
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160 #include <sys/pty.h>
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161 #endif /* AIX */
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162
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163 #ifdef SYSV_PTYS
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164 # include <sys/types.h>
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165 # include <sys/tty.h>
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166 # ifdef titan
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167 # include <sys/ttyhw.h>
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168 # include <sys/stream.h>
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169 # endif
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170 # ifndef NO_PTY_H
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171 # include <sys/pty.h>
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172 # endif
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173 #endif
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174
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175 /* XEmacs: removed some random if defined (pfa) crap for FASYNC (SIGIO).
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176 We've cleaned SIGIO up. */
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177
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178
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179 /* ----------------------------------------------------- */
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180 /* inhibiting particular features */
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181 /* ----------------------------------------------------- */
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182
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183
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184 #ifdef APOLLO
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185 #undef TIOCSTART
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186 #endif
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187
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188 #if defined (XENIX) || defined (BROKEN_TIOCGETC)
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189 #undef TIOCGETC /* Avoid confusing some conditionals that test this. */
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190 #endif
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191
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192 /* XEmacs: SIGIO is cleaned up so we remove the crap here that messes
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193 with it (and FIONREAD and FASYNC, which are related). */
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194
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195 #ifdef BROKEN_TIOCGWINSZ /* XEmacs addition */
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196 #undef TIOCGWINSZ
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197 #undef TIOCSWINSZ
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198 #endif
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199
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200 /* On TERMIOS systems, the tcmumbleattr calls take care of these
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201 parameters, and it's a bad idea to use them (on AIX, it makes the
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202 tty hang for a long time). */
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203 #if defined (TIOCGLTC) && !defined (HAVE_TERMIOS)
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204 #define HAVE_LTCHARS
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205 #endif
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206
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207 #if defined (TIOCGETC) && !defined (HAVE_TERMIOS)
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208 #define HAVE_TCHARS
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209 #endif
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210
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211
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212 /* ----------------------------------------------------- */
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213 /* disabling terminal functions */
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214 /* ----------------------------------------------------- */
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215
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216 /* Try to establish the correct character to disable terminal functions
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217 in a system-independent manner.
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218 We use the POSIX standard way to do this, and emulate on other systems. */
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219
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220 #ifndef _POSIX_VDISABLE
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221 # if defined CDEL
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222 # define _POSIX_VDISABLE CDEL
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223 # else
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224 # define _POSIX_VDISABLE 255
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225 # endif
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226 #endif /* ! _POSIX_VDISABLE */
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227
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228
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229 /* ----------------------------------------------------- */
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230 /* Get the number of characters queued for output */
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231 /* ----------------------------------------------------- */
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232
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233 /* EMACS_OUTQSIZE(FD, int *SIZE) stores the number of characters
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234 queued for output to the terminal FD in *SIZE, if FD is a tty.
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235 Returns -1 if there was an error (i.e. FD is not a tty), 0
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236 otherwise. */
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237 #ifdef TIOCOUTQ
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238 #define EMACS_OUTQSIZE(fd, size) ioctl (fd, TIOCOUTQ, size)
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239 #endif
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240
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241 #ifdef HAVE_TERMIO
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242 #ifdef TCOUTQ
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243 #undef EMACS_OUTQSIZE
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244 #define EMACS_OUTQSIZE(fd, size) ioctl (fd, TCOUTQ, size)
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245 #endif
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246 #endif
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247
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248
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249 /* -------------------------------------------------------------------- */
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250 /* Manipulate a terminal's current (foreground) process group */
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251 /* -------------------------------------------------------------------- */
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252
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253 /* EMACS_HAVE_TTY_PGRP is true if we can get and set the tty's current
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254 controlling process group.
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255
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256 EMACS_GET_TTY_PGRP(int FD, int *PGID) sets *PGID the terminal FD's
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257 current process group. Return -1 if there is an error.
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258
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259 EMACS_SET_TTY_PGRP(int FD, int *PGID) sets the terminal FD's
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260 current process group to *PGID. Return -1 if there is an error. */
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261
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262 /* HPUX tty process group stuff doesn't work, says the anonymous voice
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263 from the past. */
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264 /* But HPUX people say it does, so I've removed it. --ben */
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265 # ifdef TIOCGPGRP
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266 # define EMACS_HAVE_TTY_PGRP
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267 # else
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268 # ifdef HAVE_TERMIOS
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269 # define EMACS_HAVE_TTY_PGRP
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270 # endif
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271 # endif
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272
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273 #ifdef EMACS_HAVE_TTY_PGRP
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274
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275 #if defined (HAVE_TERMIOS) && ! defined (BSD_TERMIOS)
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276
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277 /* Resist the urge to insert needless extra parentheses. */
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278 #define EMACS_GET_TTY_PGRP(fd, pgid) (*(pgid) = tcgetpgrp (fd))
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279 #define EMACS_SET_TTY_PGRP(fd, pgid) tcsetpgrp (fd, *(pgid))
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280
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281 #elif defined (TIOCSPGRP)
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282
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283 #define EMACS_GET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCGPGRP, (pgid)))
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284 #define EMACS_SET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCSPGRP, (pgid)))
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285
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286 #endif
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287
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288 #endif /* EMACS_HAVE_TTY_PGRP */
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289
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290 #ifndef EMACS_GET_TTY_PGRP
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291
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292 /* Just ignore this for now and hope for the best */
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293 #define EMACS_GET_TTY_PGRP(fd, pgid) 0
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294 #define EMACS_SET_TTY_PGRP(fd, pgif) 0
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295
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296 #endif
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297
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298 /* XEmacs interim backward-compatibility */
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299 #define EMACS_GET_TTY_PROCESS_GROUP EMACS_GET_TTY_PGRP
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300 #define EMACS_SET_TTY_PROCESS_GROUP EMACS_SET_TTY_PGRP
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301
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302 /* EMACS_GETPGRP (arg) returns the process group of the terminal. */
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303
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304 #ifdef GETPGRP_VOID
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305 #define EMACS_GETPGRP(x) getpgrp()
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306 #else
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307 #define EMACS_GETPGRP(x) getpgrp(x)
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308 #endif /* GETPGRP_VOID */
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309
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310 /* XEmacs backward-compatibility. Is 0 always a reasonable argument? */
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311 #define EMACS_GET_PROCESS_GROUP() EMACS_GETPGRP (0)
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312
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313 /* XEmacs addition? */
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314
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315 /* EMACS_SEPARATE_PROCESS_GROUP () creates a separate process group for the
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316 running process. */
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317
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318 /* EMACS_SET_PROCESS_GROUP () sets our process group as specified. */
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319
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320 /* POSIX calls for setpgid(), so we use it if it's available.
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321 Otherwise use setpgrp(), in USG or BSD flavor. Note that
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322 on newer systems, setpgrp() has unwanted effects (e.g.
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323 creating a new session), so we want to avoid its use
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324 if possible.
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325
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326 NOTE: On some older systems, we should consider using setpgrp2()
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327 if it exists. This is sufficiently rare, though, that there
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328 seems no point in autodetecting it. Currently dgux.h is the
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329 only place where this has to be munged. */
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330
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331 #if defined (HAVE_SETPGID)
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332 # define EMACS_SEPARATE_PROCESS_GROUP() setpgid (0, 0)
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333 # define EMACS_SET_PROCESS_GROUP(pg) setpgid (0, pg)
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334 #elif defined (USG)
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335 # define EMACS_SEPARATE_PROCESS_GROUP() setpgrp ()
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336 /* old (pre-SVR4) USG's don't provide any way to do this.
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337 No big loss -- it just means that ^Z won't work right
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338 if we're run from sh. */
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339 # define EMACS_SET_PROCESS_GROUP(pg)
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340 #elif defined(__MINGW32__)
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341 # define EMACS_SEPARATE_PROCESS_GROUP()
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342 #else
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343 /* Under NeXTstep, a process group of 0 is not the same as specifying
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344 your own process ID, so we go ahead and specify it explicitly. */
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345 # define EMACS_SEPARATE_PROCESS_GROUP() setpgrp (0, getpid ())
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346 # define EMACS_SET_PROCESS_GROUP(pg) setpgrp (0, pg)
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347 #endif
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348
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349
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350 /* --------------------------------------------------------- */
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351 /* Manipulate a TTY's input/output processing parameters */
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352 /* --------------------------------------------------------- */
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353
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354 /* struct emacs_tty is a structure used to hold the current tty
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355 parameters. If the terminal has several structures describing its
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356 state, for example a struct tchars, a struct sgttyb, a struct
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357 tchars, a struct ltchars, and a struct pagechars, struct
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358 emacs_tty should contain an element for each parameter struct
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359 that Emacs may change.
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360
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430
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361 emacs_get_tty (int FD, struct emacs_tty *P) stores the parameters
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428
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362 of the tty on FD in *P. Return zero if all's well, or -1 if we ran
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363 into an error we couldn't deal with.
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364
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430
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365 emacs_set_tty (int FD, struct emacs_tty *P, int flushp)
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428
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366 sets the parameters of the tty on FD according to the contents of
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367 *P. If flushp is non-zero, we discard queued input to be
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368 written before making the change.
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369 Return 0 if all went well, and -1 if anything failed.
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370
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371 EMACS_TTY_TABS_OK (struct emacs_tty *P) is false iff the kernel
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372 expands tabs to spaces upon output; in that case, there is no
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373 advantage to using tabs over spaces. */
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374
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375
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376 /* For each tty parameter structure that Emacs might want to save and restore,
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377 - include an element for it in this structure, and
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378 - extend the emacs_{get,set}_tty functions in sysdep.c to deal with the
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379 new members. */
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380
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381 struct emacs_tty {
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382
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383 /* There is always one of the following elements, so there is no need
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384 for dummy get and set definitions. */
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385 #ifdef HAVE_TCATTR
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386 struct termios main;
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387 #else /* !HAVE_TCATTR */
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388 #ifdef HAVE_TERMIO
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389 struct termio main;
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390 #else /* !HAVE_TERMIO */
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391 #ifdef DOS_NT
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392 int main;
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393 #else /* not DOS_NT */
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394 struct sgttyb main;
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395 #endif /* not DOS_NT */
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396 #endif /* !HAVE_TERMIO */
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397 #endif /* !HAVE_TCATTR */
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398
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399 /* If we have TERMIOS, we don't need to do this - they're taken care of
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400 by the tc*attr calls. */
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401 #ifndef HAVE_TERMIOS
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402 #ifdef HAVE_LTCHARS
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403 struct ltchars ltchars;
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404 #endif /* HAVE_LTCHARS */
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405
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406 #ifdef HAVE_TCHARS
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407 struct tchars tchars;
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408 int lmode;
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409 #endif /* HAVE_TCHARS */
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410 #endif /* HAVE_TERMIOS */
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411 };
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412
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430
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413 int emacs_get_tty (int fd, struct emacs_tty *settings);
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414 int emacs_set_tty (int fd, struct emacs_tty *settings, int flushp);
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428
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415
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416
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417 /* --------------------------------------------------------- */
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418 /* Define EMACS_TTY_TABS_OK */
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419 /* --------------------------------------------------------- */
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420
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421 #ifdef HAVE_TERMIOS
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422
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423 #ifdef TABDLY
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424 #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
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425 #else
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426 #define EMACS_TTY_TABS_OK(p) 1
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427 #endif /* TABDLY */
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428
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429 #else /* not def HAVE_TERMIOS */
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430 #ifdef HAVE_TERMIO
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431
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432 #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
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433
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434 #else /* neither HAVE_TERMIO nor HAVE_TERMIOS */
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435 #ifdef DOS_NT
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436 #define EMACS_TTY_TABS_OK(p) 0
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437 #else /* not DOS_NT */
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438 #define EMACS_TTY_TABS_OK(p) (((p)->main.sg_flags & XTABS) != XTABS)
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439 #endif /* not DOS_NT */
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440
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441 #endif /* not def HAVE_TERMIO */
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442 #endif /* not def HAVE_TERMIOS */
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443
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444 #endif /* _XEMACS_SYSTTY_H_ */
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