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0
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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 /* XEmacs: TERMIOS is mo' better than TERMIO so we use it if it's
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57 there. Since TERMIO is backward-compatibility stuff if both it
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58 and TERMIOS exist, it's more likely to be broken. */
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59
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60 #if defined (HAVE_TERMIOS)
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61
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62 /***** (1) The TERMIOS way (POSIX style) *****/
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63
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64 # if defined (_AIX) && defined (_I386)
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65 # include <termios.h> /* termios.h needs to be before termio.h */
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66 # include <termio.h>
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67 # else
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68 # if !defined (NO_TERMIO)
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69 # include <termio.h>
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70 # endif
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71 # include <termios.h>
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72 # endif /* _AIX && _I386 */
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73 # ifndef INCLUDED_FCNTL
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74 # define INCLUDED_FCNTL
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75 # include <fcntl.h>
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76 # endif
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77
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78 #elif defined (HAVE_TERMIO)
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79
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80 /***** (2) The TERMIO way (system V style) *****/
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81
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82 # ifdef __DGUX
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83 # include <sys/ioctl.h>
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84 # endif
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85 # ifndef NO_TERMIO
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86 # include <termio.h>
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87 # endif /* not NO_TERMIO */
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88 # ifndef INCLUDED_FCNTL
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89 # define INCLUDED_FCNTL
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90 # include <fcntl.h>
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91 # endif
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92
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93 #elif defined (DOS_NT)
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94
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95 /***** (3) The MSDOS/NT way *****/
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96
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97 /* Nothing doing */
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98
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99 #elif !defined (VMS)
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100
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101 /***** (4) The BSD way *****/
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102
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103 # ifdef linux /* XEmacs addition -- necessary? */
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104 # include <bsd/sgtty.h>
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105 # else
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106 # include <sgtty.h>
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107 # endif
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108
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109 #else /* VMS */
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110
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111 /***** (5) The VMS way *****/
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112
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113 # include <descrip.h>
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114 static struct iosb
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115 {
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116 short status;
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117 short offset;
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118 short termlen;
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119 short term;
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120 } input_iosb;
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121
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122 extern int vms_waiting_for_ast;
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123 extern int vms_stop_input;
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124 extern int vms_input_ef;
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125 extern int vms_timer_ef;
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126 extern int vms_process_ef;
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127 extern int vms_input_eflist;
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128 extern int vms_timer_eflist;
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129
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130 static $DESCRIPTOR (vms_input_dsc, "TT");
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131 static int vms_terminator_mask[2] = { 0, 0 };
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132
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133 static struct sensemode {
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134 short status;
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135 unsigned char xmit_baud;
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136 unsigned char rcv_baud;
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137 unsigned char crfill;
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138 unsigned char lffill;
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139 unsigned char parity;
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140 unsigned char unused;
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141 char class;
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142 char type;
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143 short scr_wid;
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144 unsigned long tt_char : 24, scr_len : 8;
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145 unsigned long tt2_char;
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146 } sensemode_iosb;
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147
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148 #endif /* VMS */
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149
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150 /* XEmacs: I don't think we need the following crap. */
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151 #ifdef __GNU_LIBRARY__
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152 #include <termios.h>
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153 #endif
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154
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155 /* Formerly there was a conditional that included sys/filio.h if
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156 USG5_4 was defined, but this is already included in s/usg5-4.h */
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157
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158 /* Generally useful to include this file: */
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159
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160 /* But Sun OS has broken include files and doesn't want it included */
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161 #if !defined (VMS) && !defined (DOS_NT) && !defined (WIN32) && !defined (SUNOS4)
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162 # include <sys/ioctl.h>
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163 #endif
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164 /* UNIPLUS systems may have FIONREAD. */
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165 #ifdef UNIPLUS
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166 #include <sys.ioctl.h>
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167 #endif
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168
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169
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170 /* ----------------------------------------------------- */
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171 /* miscellaneous includes */
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172 /* ----------------------------------------------------- */
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173
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174 #ifdef AIXHFT
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175 /* Get files for keyboard remapping */
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176 #define HFNKEYS 2
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177 #include <sys/hft.h>
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178 #include <sys/devinfo.h>
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179 #endif
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180
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181 /* XEmacs: We don't support BSD 4.1 any more */
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182
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183 #ifdef NEED_BSDTTY
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184 #include <sys/bsdtty.h>
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185 #endif
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186
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187 /* Include files for PTY's */
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188
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189 #if defined (HPUX) && defined (HAVE_PTYS)
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190 #include <sys/ptyio.h>
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191 #endif
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192
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193 #ifdef AIX
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194 #include <sys/pty.h>
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195 #endif /* AIX */
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196
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197 /* XEmacs: We don't include unistd.h because it's done in lisp.h */
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198
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199 #ifdef SYSV_PTYS
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200 # include <sys/types.h>
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201 # include <sys/tty.h>
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202 # ifdef titan
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203 # include <sys/ttyhw.h>
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204 # include <sys/stream.h>
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205 # endif
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206 # ifndef NO_PTY_H
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207 # include <sys/pty.h>
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208 # endif
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209 #endif
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210
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211 /* XEmacs: removed some random if defined (pfa) crap for FASYNC (SIGIO).
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212 We've cleaned SIGIO up. */
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213
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214
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215 /* ----------------------------------------------------- */
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216 /* inhibiting particular features */
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217 /* ----------------------------------------------------- */
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218
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219
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220 #ifdef APOLLO
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221 #undef TIOCSTART
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222 #endif
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223
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224 #if defined (XENIX) || defined (BROKEN_TIOCGETC)
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225 #undef TIOCGETC /* Avoid confusing some conditionals that test this. */
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226 #endif
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227
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228 /* XEmacs: SIGIO is cleaned up so we remove the crap here that messes
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229 with it (and FIONREAD and FASYNC, which are related). */
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230
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231 #ifdef BROKEN_TIOCGWINSZ /* XEmacs addition */
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232 #undef TIOCGWINSZ
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233 #undef TIOCSWINSZ
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234 #endif
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235
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236 #ifdef BROKEN_O_NONBLOCK /* XEmacs addition */
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237 # undef O_NONBLOCK
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238 #endif /* BROKEN_O_NONBLOCK */
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239
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240 /* On TERMIOS systems, the tcmumbleattr calls take care of these
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241 parameters, and it's a bad idea to use them (on AIX, it makes the
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242 tty hang for a long time). */
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243 #if defined (TIOCGLTC) && !defined (HAVE_TERMIOS)
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244 #define HAVE_LTCHARS
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245 #endif
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246
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247 #if defined (TIOCGETC) && !defined (HAVE_TERMIOS)
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248 #define HAVE_TCHARS
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249 #endif
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250
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251
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252 /* ----------------------------------------------------- */
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253 /* disabling terminal functions */
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254 /* ----------------------------------------------------- */
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255
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256 /* Try to establish the correct character to disable terminal functions
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257 in a system-independent manner. Note that USG (at least) define
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258 _POSIX_VDISABLE as 0! */
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259
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260 #ifdef _POSIX_VDISABLE
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261 #define CDISABLE _POSIX_VDISABLE
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262 #else /* not _POSIX_VDISABLE */
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263 #ifdef CDEL
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264 #undef CDISABLE
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265 #define CDISABLE CDEL
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266 #else /* not CDEL */
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267 #define CDISABLE 255
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268 #endif /* not CDEL */
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269 #endif /* not _POSIX_VDISABLE */
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270
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271
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272 /* ----------------------------------------------------- */
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273 /* Get the number of characters queued for output */
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274 /* ----------------------------------------------------- */
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275
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276 /* EMACS_OUTQSIZE(FD, int *SIZE) stores the number of characters
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277 queued for output to the terminal FD in *SIZE, if FD is a tty.
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278 Returns -1 if there was an error (i.e. FD is not a tty), 0
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279 otherwise. */
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280 #ifdef TIOCOUTQ
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281 #define EMACS_OUTQSIZE(fd, size) ioctl (fd, TIOCOUTQ, size)
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282 #endif
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283
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284 #ifdef HAVE_TERMIO
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285 #ifdef TCOUTQ
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286 #undef EMACS_OUTQSIZE
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287 #define EMACS_OUTQSIZE(fd, size) ioctl (fd, TCOUTQ, size)
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288 #endif
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289 #endif
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290
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291
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292 /* -------------------------------------------------------------------- */
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293 /* Manipulate a terminal's current (foreground) process group */
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294 /* -------------------------------------------------------------------- */
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295
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296 /* EMACS_HAVE_TTY_PGRP is true if we can get and set the tty's current
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297 controlling process group.
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298
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299 EMACS_GET_TTY_PGRP(int FD, int *PGID) sets *PGID the terminal FD's
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300 current process group. Return -1 if there is an error.
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301
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302 EMACS_SET_TTY_PGRP(int FD, int *PGID) sets the terminal FD's
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303 current process group to *PGID. Return -1 if there is an error. */
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304
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305 /* HPUX tty process group stuff doesn't work, says the anonymous voice
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306 from the past. */
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307 /* But HPUX people say it does, so I've removed it. --ben */
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308 # ifdef TIOCGPGRP
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309 # define EMACS_HAVE_TTY_PGRP
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310 # else
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311 # ifdef HAVE_TERMIOS
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312 # define EMACS_HAVE_TTY_PGRP
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313 # endif
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314 # endif
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315
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316 #ifdef EMACS_HAVE_TTY_PGRP
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317
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318 #if defined (HAVE_TERMIOS) && ! defined (BSD_TERMIOS)
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319
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320 /* Resist the urge to insert needless extra parentheses. */
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321 #define EMACS_GET_TTY_PGRP(fd, pgid) (*(pgid) = tcgetpgrp (fd))
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322 #define EMACS_SET_TTY_PGRP(fd, pgid) tcsetpgrp (fd, *(pgid))
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323
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324 #elif defined (TIOCSPGRP)
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325
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326 #define EMACS_GET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCGPGRP, (pgid)))
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327 #define EMACS_SET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCSPGRP, (pgid)))
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328
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329 #endif
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330
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331 #endif /* EMACS_HAVE_TTY_PGRP */
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332
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333 #ifndef EMACS_GET_TTY_PGRP
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334
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335 /* Just ignore this for now and hope for the best */
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336 #define EMACS_GET_TTY_PGRP(fd, pgid) 0
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337 #define EMACS_SET_TTY_PGRP(fd, pgif) 0
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338
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339 #endif
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340
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341 /* XEmacs interim backward-compatibility */
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342 #define EMACS_GET_TTY_PROCESS_GROUP EMACS_GET_TTY_PGRP
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343 #define EMACS_SET_TTY_PROCESS_GROUP EMACS_SET_TTY_PGRP
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344
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345 /* EMACS_GETPGRP (arg) returns the process group of the terminal. */
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346
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347 /* USG systems have always used the no-arg form of getpgrp().
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348 POSIX also calls for this, and thus some newer BSD systems
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349 have this change. Older BSD systems have an argument.
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350 It would be nice to autodetect this, but there's unfortunately
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351 no general way. */
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352
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353 /* XEmacs backwards-compatibility */
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354 #ifdef GETPGRP_NEEDS_ARG
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355 # undef GETPGRP_NO_ARG
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356 #else
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357 # ifdef GETPGRP_NO_ARG
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358 # undef GETPGRP_NEEDS_ARG
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359 # endif
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360 #endif
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361
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362 #if defined (USG) && !defined (GETPGRP_NEEDS_ARG)
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363 # if !defined (GETPGRP_NO_ARG)
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364 # define GETPGRP_NO_ARG
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365 # endif
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366 #endif
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367
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368 #if defined (GETPGRP_NO_ARG)
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369 # define EMACS_GETPGRP(x) getpgrp()
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370 #else
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371 # define EMACS_GETPGRP(x) getpgrp(x)
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372 #endif /* !GETPGRP_NO_ARG */
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373
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374 /* XEmacs backward-compatibility. Is 0 always a reasonable argument? */
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375 #define EMACS_GET_PROCESS_GROUP() EMACS_GETPGRP (0)
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376
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377 /* Xemacs addition? */
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378
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379 /* EMACS_SEPARATE_PROCESS_GROUP () creates a separate process group for the
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380 running process. */
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381
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382 /* EMACS_SET_PROCESS_GROUP () sets our process group as specified. */
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383
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384 /* POSIX calls for setpgid(), so we use it if it's available.
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385 Otherwise use setpgrp(), in USG or BSD flavor. Note that
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386 on newer systems, setpgrp() has unwanted effects (e.g.
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387 creating a new session), so we want to avoid its use
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388 if possible.
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389
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390 NOTE: On some older systems, we should consider using setpgrp2()
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391 if it exists. This is sufficiently rare, though, that there
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392 seems no point in autodetecting it. Currently dgux.h is the
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393 only place where this has to be munged. */
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394
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395 #if defined (HAVE_SETPGID)
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396 # define EMACS_SEPARATE_PROCESS_GROUP() setpgid (0, 0)
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397 # define EMACS_SET_PROCESS_GROUP(pg) setpgid (0, pg)
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398 #elif defined (USG)
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399 # define EMACS_SEPARATE_PROCESS_GROUP() setpgrp ()
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400 /* old (pre-SVR4) USG's don't provide any way to do this.
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401 No big loss -- it just means that ^Z won't work right
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402 if we're run from sh. */
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403 # define EMACS_SET_PROCESS_GROUP(pg)
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404 #else
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405 /* Under NeXTstep, a process group of 0 is not the same as specifying
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406 your own process ID, so we go ahead and specify it explicitly. */
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407 # define EMACS_SEPARATE_PROCESS_GROUP() setpgrp (0, getpid ())
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408 # define EMACS_SET_PROCESS_GROUP(pg) setpgrp (0, pg)
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409 #endif
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410
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411
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412 /* --------------------------------------------------------- */
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413 /* Manipulate a TTY's input/output processing parameters */
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414 /* --------------------------------------------------------- */
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415
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416 /* struct emacs_tty is a structure used to hold the current tty
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417 parameters. If the terminal has several structures describing its
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418 state, for example a struct tchars, a struct sgttyb, a struct
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419 tchars, a struct ltchars, and a struct pagechars, struct
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420 emacs_tty should contain an element for each parameter struct
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421 that Emacs may change.
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422
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423 EMACS_GET_TTY (int FD, struct emacs_tty *P) stores the parameters
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424 of the tty on FD in *P. Return zero if all's well, or -1 if we ran
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425 into an error we couldn't deal with.
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426
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427 EMACS_SET_TTY (int FD, struct emacs_tty *P, int flushp)
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428 sets the parameters of the tty on FD according to the contents of
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429 *P. If flushp is non-zero, we discard queued input to be
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430 written before making the change.
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431 Return 0 if all went well, and -1 if anything failed.
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432
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433 EMACS_TTY_TABS_OK (struct emacs_tty *P) is false iff the kernel
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434 expands tabs to spaces upon output; in that case, there is no
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435 advantage to using tabs over spaces. */
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436
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437
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438 /* For each tty parameter structure that Emacs might want to save and restore,
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439 - include an element for it in this structure, and
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440 - extend the emacs_{get,set}_tty functions in sysdep.c to deal with the
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441 new members. */
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442
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443 struct emacs_tty {
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444
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445 /* There is always one of the following elements, so there is no need
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446 for dummy get and set definitions. */
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447 #ifdef HAVE_TCATTR
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448 struct termios main;
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449 #else
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450 #ifdef HAVE_TERMIO
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451 struct termio main;
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452 #else
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453 #ifdef VMS
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454 struct sensemode main;
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455 #else
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456 #ifdef DOS_NT
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457 int main;
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458 #else /* not DOS_NT */
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459 struct sgttyb main;
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460 #endif /* not DOS_NT */
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461 #endif /* !VMS */
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462 #endif
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463 #endif
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464
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465 /* If we have TERMIOS, we don't need to do this - they're taken care of
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466 by the tc*attr calls. */
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467 #ifndef HAVE_TERMIOS
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468 #ifdef HAVE_LTCHARS
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469 struct ltchars ltchars;
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470 #endif
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471
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472 #ifdef HAVE_TCHARS
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473 struct tchars tchars;
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474 int lmode;
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475 #endif
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476 #endif
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477 };
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478
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479 /* Define EMACS_GET_TTY and EMACS_SET_TTY,
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480 the macros for reading and setting parts of `struct emacs_tty'.
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481
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482 These got pretty unmanageable (huge macros are hard to debug), and
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483 finally needed some code which couldn't be done as part of an
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484 expression, so we moved them out to their own functions in sysdep.c. */
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485 #define EMACS_GET_TTY(fd, p) emacs_get_tty (fd, p)
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486 #define EMACS_SET_TTY(fd, p, waitp) emacs_set_tty (fd, p, waitp)
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487
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488
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489 /* --------------------------------------------------------- */
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490 /* Define EMACS_TTY_TABS_OK */
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491 /* --------------------------------------------------------- */
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492
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493 #ifdef HAVE_TERMIOS
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494
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495 #ifdef TABDLY
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496 #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
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497 #else
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498 #define EMACS_TTY_TABS_OK(p) 1
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499 #endif
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500
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501 #else /* not def HAVE_TERMIOS */
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502 #ifdef HAVE_TERMIO
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503
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504 #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
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505
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506 #else /* neither HAVE_TERMIO nor HAVE_TERMIOS */
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507 #ifdef VMS
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508
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509 #define EMACS_TTY_TABS_OK(p) (((p)->main.tt_char & TT$M_MECHTAB) != 0)
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510
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511 #else
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512
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513 #ifdef DOS_NT
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514 #define EMACS_TTY_TABS_OK(p) 0
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515 #else /* not DOS_NT */
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516 #define EMACS_TTY_TABS_OK(p) (((p)->main.sg_flags & XTABS) != XTABS)
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517 #endif /* not DOS_NT */
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518
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519 #endif /* not def VMS */
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520 #endif /* not def HAVE_TERMIO */
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521 #endif /* not def HAVE_TERMIOS */
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522
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523 #endif /* _XEMACS_SYSTTY_H_ */
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