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0
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1 /* Interfaces to system-dependent kernel and library entries.
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2 Copyright (C) 1985-1988, 1992-1995 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Tinker Systems.
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: FSF 19.30 except for some Windows-NT crap. */
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23
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24 /* Substantially cleaned up by Ben Wing, Dec. 1994 / Jan. 1995. */
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25
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26 /* In this file, open, read and write refer to the system calls,
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27 not our sugared interfaces sys_open, sys_read and sys_write.
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28 */
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29
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30 #define DONT_ENCAPSULATE
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31
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32 #include <config.h>
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239
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33
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34 #ifdef WINDOWSNT
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35 #include <direct.h>
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36 /* <process.h> should not conflict with "process.h", as per ANSI definition.
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37 This is not true though with visual c though. The trick below works with
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38 VC4.2b and with VC5.0. It assumes that VC is installed in a kind of
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39 standard way, so include files get to what/ever/path/include.
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40 */
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41 #include <../include/process.h>
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42 #endif /* WINDOWSNT */
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43
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0
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44 #include "lisp.h"
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45
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187
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46 #include <stddef.h>
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47
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0
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48 /* ------------------------------- */
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49 /* basic includes */
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50 /* ------------------------------- */
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51
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52 #ifdef HAVE_TTY
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53 #include "console-tty.h"
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78
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54 #else
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55 #include "syssignal.h"
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56 #include "systty.h"
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0
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57 #endif /* HAVE_TTY */
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58
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59 #include "console-stream.h"
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60
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61 #include "buffer.h"
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62 #include "events.h"
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63 #include "frame.h"
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64 #include "redisplay.h"
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65 #include "process.h"
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66 #include "sysdep.h"
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67 #include "window.h"
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68
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69 #include <setjmp.h>
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2
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70 #ifdef HAVE_LIBGEN_H /* Must come before sysfile.h */
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71 #include <libgen.h>
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72 #endif
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0
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73 #include "sysfile.h"
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74 #include "syswait.h"
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75 #include "sysdir.h"
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76 #include "systime.h"
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231
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77 #if defined(WINDOWSNT) || defined(__CYGWIN32__)
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100
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78 #include "syssignal.h"
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231
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79 #endif
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80 #ifndef WINDOWSNT
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0
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81 #include <sys/times.h>
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100
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82 #endif
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239
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83 #ifdef WINDOWSNT
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84 #include <sys/utime.h>
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85 #include "ntheap.h"
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179
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86 #endif
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87
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0
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88 /* ------------------------------- */
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89 /* TTY definitions */
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90 /* ------------------------------- */
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91
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92 #ifdef USG
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93 #include <sys/utsname.h>
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94 #if defined (TIOCGWINSZ) || defined (ISC4_0)
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95 #ifdef NEED_SIOCTL
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96 #include <sys/sioctl.h>
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97 #endif
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98 #ifdef NEED_PTEM_H
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99 #include <sys/stream.h>
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100 #include <sys/ptem.h>
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101 #endif
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102 #endif /* TIOCGWINSZ or ISC4_0 */
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103 #endif /* USG */
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104
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105 #ifdef HAVE_SYS_STROPTS_H
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185
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106 #include <sys/stropts.h>
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0
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107 #endif /* HAVE_SYS_STROPTS_H */
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108
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109 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
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110 #ifndef LPASS8
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111 #define LPASS8 0
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112 #endif
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113
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114 #ifndef HAVE_H_ERRNO
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115 int h_errno;
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116 #endif
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117
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118 #ifdef HAVE_TTY
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119
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120 static int baud_convert[] =
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121 #ifdef BAUD_CONVERT
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122 BAUD_CONVERT;
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123 #else
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124 {
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125 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
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126 1800, 2400, 4800, 9600, 19200, 38400
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127 };
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128 #endif
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129
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130 #endif
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131
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132 #ifdef AIXHFT
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133 static void hft_init (struct console *c);
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134 static void hft_reset (struct console *c);
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135 #endif
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136
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137 /* ------------------------------- */
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138 /* miscellaneous */
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139 /* ------------------------------- */
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140
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141 #ifndef HAVE_UTIMES
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142 #ifndef HAVE_STRUCT_UTIMBUF
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143 /* We want to use utime rather than utimes, but we couldn't find the
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144 structure declaration. We'll use the traditional one. */
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145 struct utimbuf
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146 {
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147 long actime;
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148 long modtime;
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149 };
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150 #endif
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151 #endif
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152
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153
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154 /************************************************************************/
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155 /* subprocess control */
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156 /************************************************************************/
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157
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158 #ifdef HAVE_TTY
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159
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160 #ifdef SIGTSTP
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161
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162 /* Arrange for character C to be read as the next input from
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163 the terminal. */
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164 void
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165 stuff_char (struct console *con, int c)
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166 {
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167 int input_fd;
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168
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169 assert (CONSOLE_TTY_P (con));
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170 input_fd = CONSOLE_TTY_DATA (con)->infd;
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171 /* Should perhaps error if in batch mode */
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172 #ifdef TIOCSTI
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173 ioctl (input_fd, TIOCSTI, &c);
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174 #else /* no TIOCSTI */
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175 error ("Cannot stuff terminal input characters in this version of Unix.");
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176 #endif /* no TIOCSTI */
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177 }
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178
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179 #endif /* SIGTSTP */
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180
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181 #endif /* HAVE_TTY */
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182
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183 void
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184 set_exclusive_use (int fd)
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185 {
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186 #ifdef FIOCLEX
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187 ioctl (fd, FIOCLEX, 0);
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188 #endif
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189 /* Ok to do nothing if this feature does not exist */
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190 }
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191
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192 void
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193 set_descriptor_non_blocking (int fd)
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194 {
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195 /* Stride people say it's a mystery why this is needed
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196 as well as the O_NDELAY, but that it fails without this. */
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197 /* For AIX: Apparently need this for non-blocking reads on sockets.
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198 It seems that O_NONBLOCK applies only to FIFOs? From
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199 lowry@watson.ibm.com (Andy Lowry). */
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200 /* #### Should this be conditionalized on FIONBIO? */
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201 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS)) || defined (AIX)
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202 {
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203 int one = 1;
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204 ioctl (fd, FIONBIO, &one);
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205 }
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206 #endif
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207
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208 #ifdef O_NONBLOCK /* The POSIX way */
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209 fcntl (fd, F_SETFL, O_NONBLOCK);
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210 #elif defined (O_NDELAY)
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211 fcntl (fd, F_SETFL, O_NDELAY);
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212 #endif /* O_NONBLOCK */
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213 }
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214
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215 #if defined (NO_SUBPROCESSES)
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216
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217 #ifdef BSD
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218 void
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219 wait_without_blocking (void)
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220 {
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221 wait3 (0, WNOHANG | WUNTRACED, 0);
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222 synch_process_alive = 0;
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223 }
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224 #endif /* BSD */
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225
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226 #endif /* NO_SUBPROCESSES */
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227
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228
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229 void
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230 wait_for_termination (int pid)
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231 {
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232 /* #### With the new improved SIGCHLD handling stuff, there is much
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233 less danger of race conditions and some of the comments below
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234 don't apply. This should be updated. */
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163
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235
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236 #if defined (NO_SUBPROCESSES)
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0
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237 while (1)
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238 {
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163
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239 /* No need to be tricky like below; we can just call wait(). */
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240 /* #### should figure out how to write a wait_allowing_quit().
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241 Since hardly any systems don't have subprocess support,
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242 however, there doesn't seem to be much point. */
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243 if (wait (0) == pid)
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244 return;
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245 }
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246 #elif defined (HAVE_WAITPID)
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247 /* Note that, whenever any subprocess terminates (asynch. or synch.),
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248 the SIGCHLD handler will be called and it will call wait(). Thus
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249 we cannot just call wait() ourselves, and we can't block SIGCHLD
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250 and then call wait(), because then if an asynch. process dies
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251 while we're waiting for our synch. process, Emacs will never
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252 notice that the asynch. process died.
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253
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254 So, the general approach we take is to repeatedly block until a
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255 signal arrives, and then check if our process died using kill
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256 (pid, 0). (We could also check the value of `synch_process_alive',
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257 since the SIGCHLD handler will reset that and we know that we're
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258 only being called on synchronous processes, but this approach is
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259 safer. I don't trust the proper delivery of SIGCHLD.
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260
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261 Note also that we cannot use any form of waitpid(). A loop with
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262 WNOHANG will chew up CPU time; better to use sleep(). A loop
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263 without WNOWAIT will screw up the SIGCHLD handler (actually this
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264 is not true, if you duplicate the exit-status-reaping code; see
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265 below). A loop with WNOWAIT will result in a race condition if
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266 the process terminates between the process-status check and the
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267 call to waitpid(). */
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268
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269 /* Formerly, immediate_quit was set around this function call, but
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270 that could lead to problems if the QUIT happened when SIGCHLD was
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271 blocked -- it would remain blocked. Yet another reason why
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272 immediate_quit is a bad idea. In any case, there is no reason to
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273 resort to this because either the SIGIO or the SIGALRM will stop
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274 the block in EMACS_WAIT_FOR_SIGNAL(). */
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275
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276 /* Apparently there are bugs on some systems with the second method
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277 used below (the EMACS_BLOCK_SIGNAL method), whereby zombie
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278 processes get left around. It appears in those cases that the
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279 SIGCHLD handler is never getting invoked. It's not clear whether
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280 this is an Emacs bug or a kernel bug or both: on HPUX this
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281 problem is observed only with XEmacs, but under Solaris 2.4 all
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282 sorts of different programs have problems with zombies. The
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283 method we use here does not require a working SIGCHLD (but will
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284 not break if it is working), and should be safe. */
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285 /*
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286 We use waitpid(), contrary to the remarks above. There is no
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287 race condition, because the three situations when sigchld_handler
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288 is invoked should be handled OK:
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289
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290 - handler invoked before waitpid(): In this case, subprocess
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291 status will be set by sigchld_handler. waitpid() here will
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292 return -1 with errno set to ECHILD, which is a valid exit
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293 condition.
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294
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295 - handler invoked during waitpid(): as above, except that errno
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296 here will be set to EINTR. This will cause waitpid() to be
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297 called again, and this time it will exit with ECHILD.
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298
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299 - handler invoked after waitpid(): The following code will reap
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300 the subprocess. In the handler, wait() will return -1 because
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301 there is no child to reap, and the handler will exit without
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302 modifying child subprocess status. */
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303 int ret, status;
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304
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305 /* Because the SIGCHLD handler can potentially reap the synchronous
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306 subprocess, we should take care of that. */
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307
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308 /* Will stay in the do loop as long as:
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309 1. Process is alive
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310 2. Ctrl-G is not pressed */
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311 do
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312 {
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0
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313 QUIT;
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163
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314 ret = waitpid (pid, &status, 0);
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315 /* waitpid returns 0 if the process is still alive. */
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316 }
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317 while (ret == 0 || (ret == -1 && errno == EINTR));
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318
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319 if (ret == pid) /* Success */
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320 /* Set synch process globals. This is can also happen
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321 in sigchld_handler, and that code is duplicated. */
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322 {
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323 synch_process_alive = 0;
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324 if (WIFEXITED (status))
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325 synch_process_retcode = WEXITSTATUS (status);
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326 else if (WIFSIGNALED (status))
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327 synch_process_death = signal_name (WTERMSIG (status));
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328 }
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329 /* On exiting the loop, ret will be -1, with errno set to ECHILD if
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330 the child has already been reaped, e.g. in the signal handler. */
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331
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332 /* Otherwise, we've had some error condition here.
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333 Per POSIX, the only other possibilities are:
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334 - EFAULT (bus error accessing arg 2) or
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335 - EINVAL (incorrect arguments),
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336 which are both program bugs.
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337
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338 Since implementations may add their own error indicators on top,
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339 we ignore it by default. */
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340 #elif defined (EMACS_BLOCK_SIGNAL) && !defined (BROKEN_WAIT_FOR_SIGNAL) && defined (SIGCHLD)
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341 while (1)
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342 {
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343 static int wait_debugging = 0; /* Set nonzero to make following
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344 function work under dbx (at least for bsd). */
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345 QUIT;
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346 if (wait_debugging)
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347 return;
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348
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349 EMACS_BLOCK_SIGNAL (SIGCHLD);
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350 /* Block SIGCHLD from happening during this check,
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351 to avoid race conditions. */
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352 if (kill (pid, 0) < 0)
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0
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353 {
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163
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354 EMACS_UNBLOCK_SIGNAL (SIGCHLD);
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355 return;
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0
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356 }
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163
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357 else
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358 /* WARNING: Whatever this macro does *must* not allow SIGCHLD
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359 to happen between the time that it's reenabled and when we
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360 begin to block. Otherwise we may end up blocking for a
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361 signal that has already arrived and isn't coming again.
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362 Can you say "race condition"?
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363
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364 I assume that the system calls sigpause() or sigsuspend()
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365 to provide this atomicness. If you're getting hangs in
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366 sigpause()/sigsuspend(), then your OS doesn't implement
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367 this properly (this applies under hpux9, for example).
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368 Try defining BROKEN_WAIT_FOR_SIGNAL. */
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369 EMACS_WAIT_FOR_SIGNAL (SIGCHLD);
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370 }
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371 #else /* not HAVE_WAITPID and (not EMACS_BLOCK_SIGNAL or BROKEN_WAIT_FOR_SIGNAL) */
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372 /* This approach is kind of cheesy but is guaranteed(?!) to work
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373 for all systems. */
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374 while (1)
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375 {
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376 QUIT;
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0
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377 if (kill (pid, 0) < 0)
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378 return;
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379 emacs_sleep (1);
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380 }
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163
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381 #endif /* OS features */
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0
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382 }
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383
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384
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385 #if !defined (NO_SUBPROCESSES)
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386
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387 /*
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388 * flush any pending output
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389 * (may flush input as well; it does not matter the way we use it)
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390 */
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185
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391
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0
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392 void
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393 flush_pending_output (int channel)
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394 {
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395 #ifdef HAVE_TERMIOS
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396 /* If we try this, we get hit with SIGTTIN, because
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397 the child's tty belongs to the child's pgrp. */
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398 #elif defined (TCFLSH)
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399 ioctl (channel, TCFLSH, 1);
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400 #elif defined (TIOCFLUSH)
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401 int zero = 0;
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402 /* 3rd arg should be ignored
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|
403 but some 4.2 kernels actually want the address of an int
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404 and nonzero means something different. */
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405 ioctl (channel, TIOCFLUSH, &zero);
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|
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406 #endif
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|
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407 }
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408
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409 #ifndef MSDOS
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|
100
|
410 #ifndef WINDOWSNT
|
|
0
|
411 /* Set up the terminal at the other end of a pseudo-terminal that
|
|
|
412 we will be controlling an inferior through.
|
|
|
413 It should not echo or do line-editing, since that is done
|
|
|
414 in Emacs. No padding needed for insertion into an Emacs buffer. */
|
|
|
415
|
|
|
416 void
|
|
|
417 child_setup_tty (int out)
|
|
|
418 {
|
|
|
419 struct emacs_tty s;
|
|
|
420 EMACS_GET_TTY (out, &s);
|
|
|
421
|
|
|
422 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
|
|
|
423 assert (isatty(out));
|
|
|
424 s.main.c_oflag |= OPOST; /* Enable output postprocessing */
|
|
|
425 s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */
|
|
|
426 #ifdef NLDLY
|
|
|
427 s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY);
|
|
|
428 /* No output delays */
|
|
|
429 #endif
|
|
|
430 s.main.c_lflag &= ~ECHO; /* Disable echo */
|
|
|
431 s.main.c_lflag |= ISIG; /* Enable signals */
|
|
|
432 #ifdef IUCLC
|
|
|
433 s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */
|
|
|
434 #endif
|
|
|
435 #ifdef OLCUC
|
|
|
436 s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */
|
|
|
437 #endif
|
|
100
|
438 s.main.c_oflag &= ~TAB3; /* Disable tab expansion */
|
|
0
|
439 #if defined (CSIZE) && defined (CS8)
|
|
|
440 s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */
|
|
|
441 #endif
|
|
|
442 #ifdef ISTRIP
|
|
|
443 s.main.c_iflag &= ~ISTRIP; /* Don't strip 8th bit on input */
|
|
|
444 #endif
|
|
|
445 #if 0
|
|
|
446 /* Unnecessary as long as ICANON is set */
|
|
|
447 s.main.c_cc[VMIN] = 1; /* minimum number of characters to accept */
|
|
|
448 s.main.c_cc[VTIME] = 0; /* wait forever for at least 1 character */
|
|
|
449 #endif /* 0 */
|
|
|
450
|
|
|
451 s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */
|
|
175
|
452 s.main.c_cc[VEOF] = 04; /* ensure that EOF is Control-D */
|
|
0
|
453 s.main.c_cc[VERASE] = CDISABLE; /* disable erase processing */
|
|
|
454 s.main.c_cc[VKILL] = CDISABLE; /* disable kill processing */
|
|
|
455
|
|
|
456 #ifdef HPUX
|
|
|
457 s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */
|
|
|
458 #endif /* HPUX */
|
|
|
459
|
|
|
460 #ifdef AIX
|
|
|
461 #ifndef IBMR2AIX
|
|
|
462 /* AIX enhanced edit loses NULs, so disable it. */
|
|
|
463 s.main.c_line = 0;
|
|
|
464 s.main.c_iflag &= ~ASCEDIT;
|
|
|
465 #endif /* IBMR2AIX */
|
|
|
466 /* Also, PTY overloads NUL and BREAK.
|
|
|
467 don't ignore break, but don't signal either, so it looks like NUL.
|
|
|
468 This really serves a purpose only if running in an XTERM window
|
|
|
469 or via TELNET or the like, but does no harm elsewhere. */
|
|
|
470 s.main.c_iflag &= ~IGNBRK;
|
|
|
471 s.main.c_iflag &= ~BRKINT;
|
|
|
472 #endif /* AIX */
|
|
|
473 #ifdef SIGNALS_VIA_CHARACTERS
|
|
|
474 /* the QUIT and INTR character are used in process_send_signal
|
|
|
475 so set them here to something useful. */
|
|
|
476 s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */
|
|
|
477 s.main.c_cc[VINTR] = 'C' &037; /* Control-C */
|
|
|
478 #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
|
|
|
479 /* QUIT and INTR work better as signals, so disable character forms */
|
|
|
480 s.main.c_cc[VQUIT] = CDISABLE;
|
|
|
481 s.main.c_cc[VINTR] = CDISABLE;
|
|
|
482 s.main.c_lflag &= ~ISIG;
|
|
|
483 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
|
|
|
484 s.main.c_cc[VEOL] = CDISABLE;
|
|
|
485 #if defined (CBAUD)
|
|
|
486 /* <mdiers> ### This is not portable. ###
|
|
|
487 POSIX does not specify CBAUD, and 4.4BSD does not have it.
|
|
|
488 Instead, POSIX suggests to use cfset{i,o}speed().
|
|
|
489 [cf. D. Lewine, POSIX Programmer's Guide, Chapter 8: Terminal
|
|
|
490 I/O, O'Reilly 1991] */
|
|
|
491 s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */
|
|
|
492 #else
|
|
|
493 /* <mdiers> What to do upon failure? Just ignoring rc is probably
|
|
|
494 not acceptable, is it? */
|
|
|
495 if (cfsetispeed (&s.main, B9600) == -1) /* ignore */;
|
|
|
496 if (cfsetospeed (&s.main, B9600) == -1) /* ignore */;
|
|
|
497 #endif /* defined (CBAUD) */
|
|
|
498
|
|
|
499 #else /* not HAVE_TERMIO */
|
|
|
500
|
|
|
501 s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE
|
|
|
502 | CBREAK | TANDEM);
|
|
|
503 s.main.sg_flags |= LPASS8;
|
|
|
504 s.main.sg_erase = 0377;
|
|
|
505 s.main.sg_kill = 0377;
|
|
|
506 s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */
|
|
|
507
|
|
|
508 #endif /* not HAVE_TERMIO */
|
|
|
509 EMACS_SET_TTY (out, &s, 0);
|
|
|
510
|
|
|
511 #ifdef RTU
|
|
|
512 {
|
|
|
513 int zero = 0;
|
|
|
514 ioctl (out, FIOASYNC, &zero);
|
|
|
515 }
|
|
|
516 #endif /* RTU */
|
|
|
517 }
|
|
100
|
518 #endif /* WINDOWSNT */
|
|
0
|
519 #endif /* not MSDOS */
|
|
|
520
|
|
|
521 #endif /* not NO_SUBPROCESSES */
|
|
|
522
|
|
|
523
|
|
209
|
524 #if !defined (SIGTSTP) && !defined (USG_JOBCTRL)
|
|
0
|
525
|
|
239
|
526 #if defined(__STDC__) || defined(_MSC_VER)
|
|
|
527 #define SIG_PARAM_TYPE int
|
|
|
528 #else
|
|
|
529 #define SIG_PARAM_TYPE
|
|
|
530 #endif
|
|
|
531
|
|
0
|
532 /* Record a signal code and the handler for it. */
|
|
|
533 struct save_signal
|
|
|
534 {
|
|
|
535 int code;
|
|
239
|
536 SIGTYPE (*handler) (SIG_PARAM_TYPE);
|
|
0
|
537 };
|
|
|
538
|
|
|
539 static void
|
|
|
540 save_signal_handlers (struct save_signal *saved_handlers)
|
|
|
541 {
|
|
|
542 while (saved_handlers->code)
|
|
|
543 {
|
|
|
544 saved_handlers->handler
|
|
239
|
545 = (SIGTYPE (*) (SIG_PARAM_TYPE)) signal (saved_handlers->code, SIG_IGN);
|
|
0
|
546 saved_handlers++;
|
|
|
547 }
|
|
|
548 }
|
|
|
549
|
|
|
550 static void
|
|
|
551 restore_signal_handlers (struct save_signal *saved_handlers)
|
|
|
552 {
|
|
|
553 while (saved_handlers->code)
|
|
|
554 {
|
|
|
555 signal (saved_handlers->code, saved_handlers->handler);
|
|
|
556 saved_handlers++;
|
|
|
557 }
|
|
|
558 }
|
|
|
559
|
|
|
560 /* Fork a subshell. */
|
|
|
561 static void
|
|
|
562 sys_subshell (void)
|
|
|
563 {
|
|
|
564 #ifdef MSDOS
|
|
|
565 int st;
|
|
|
566 char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */
|
|
|
567 #endif /* MSDOS */
|
|
|
568 int pid;
|
|
|
569 struct save_signal saved_handlers[5];
|
|
|
570 Lisp_Object dir;
|
|
|
571 unsigned char *str = 0;
|
|
|
572 int len;
|
|
116
|
573 struct gcpro gcpro1;
|
|
0
|
574
|
|
|
575 saved_handlers[0].code = SIGINT;
|
|
|
576 saved_handlers[1].code = SIGQUIT;
|
|
|
577 saved_handlers[2].code = SIGTERM;
|
|
|
578 #ifdef SIGIO
|
|
|
579 saved_handlers[3].code = SIGIO;
|
|
|
580 saved_handlers[4].code = 0;
|
|
|
581 #else
|
|
|
582 saved_handlers[3].code = 0;
|
|
|
583 #endif
|
|
|
584
|
|
|
585 /* Mentioning current_buffer->buffer would mean including buffer.h,
|
|
|
586 which somehow wedges the hp compiler. So instead... */
|
|
|
587
|
|
|
588 if (NILP (Fboundp (Qdefault_directory)))
|
|
|
589 goto xyzzy;
|
|
|
590 dir = Fsymbol_value (Qdefault_directory);
|
|
|
591 if (!STRINGP (dir))
|
|
|
592 goto xyzzy;
|
|
116
|
593
|
|
|
594 GCPRO1 (dir);
|
|
|
595 dir = Funhandled_file_name_directory (dir);
|
|
|
596 dir = expand_and_dir_to_file (dir, Qnil);
|
|
|
597 UNGCPRO;
|
|
16
|
598 str = (unsigned char *) alloca (XSTRING_LENGTH (dir) + 2);
|
|
|
599 len = XSTRING_LENGTH (dir);
|
|
|
600 memcpy (str, XSTRING_DATA (dir), len);
|
|
0
|
601 /* #### Unix specific */
|
|
|
602 if (str[len - 1] != '/') str[len++] = '/';
|
|
|
603 str[len] = 0;
|
|
|
604 xyzzy:
|
|
|
605
|
|
179
|
606 #ifdef WINDOWSNT
|
|
|
607 pid = -1;
|
|
|
608 #else /* not WINDOWSNT */
|
|
|
609
|
|
211
|
610 pid = fork ();
|
|
0
|
611
|
|
|
612 if (pid == -1)
|
|
|
613 error ("Can't spawn subshell");
|
|
|
614 if (pid == 0)
|
|
179
|
615
|
|
|
616 #endif /* not WINDOWSNT */
|
|
0
|
617 {
|
|
|
618 char *sh = 0;
|
|
|
619
|
|
|
620 #ifdef MSDOS /* MW, Aug 1993 */
|
|
|
621 getwd (oldwd);
|
|
|
622 if (sh == 0)
|
|
|
623 sh = (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
|
|
|
624 #endif
|
|
|
625 if (sh == 0)
|
|
|
626 sh = (char *) egetenv ("SHELL");
|
|
|
627 if (sh == 0)
|
|
|
628 sh = "sh";
|
|
|
629
|
|
|
630 /* Use our buffer's default directory for the subshell. */
|
|
|
631 if (str)
|
|
|
632 sys_chdir (str);
|
|
|
633
|
|
|
634 #if !defined (NO_SUBPROCESSES)
|
|
|
635 close_process_descs (); /* Close Emacs's pipes/ptys */
|
|
|
636 #endif
|
|
|
637
|
|
|
638 #ifdef SET_EMACS_PRIORITY
|
|
|
639 if (emacs_priority != 0)
|
|
185
|
640 nice (-emacs_priority); /* Give the new shell the default priority */
|
|
0
|
641 #endif
|
|
|
642
|
|
|
643 #ifdef MSDOS
|
|
|
644 st = system (sh);
|
|
|
645 sys_chdir (oldwd);
|
|
|
646 #if 0 /* This is also reported if last command executed in subshell failed, KFS */
|
|
|
647 if (st)
|
|
|
648 report_file_error ("Can't execute subshell",
|
|
|
649 Fcons (build_string (sh), Qnil));
|
|
|
650 #endif
|
|
|
651 #else /* not MSDOS */
|
|
179
|
652 #ifdef WINDOWSNT
|
|
|
653 /* Waits for process completion */
|
|
|
654 pid = _spawnlp (_P_WAIT, sh, sh, NULL);
|
|
|
655 if (pid == -1)
|
|
|
656 write (1, "Can't execute subshell", 22);
|
|
|
657
|
|
|
658 #if 0
|
|
|
659 /* This relates to the GNU Emacs console port, not required under X ? */
|
|
|
660 take_console ();
|
|
|
661 #endif
|
|
|
662 #else /* not WINDOWSNT */
|
|
0
|
663 execlp (sh, sh, 0);
|
|
|
664 write (1, "Can't execute subshell", 22);
|
|
|
665 _exit (1);
|
|
179
|
666 #endif /* not WINDOWSNT */
|
|
0
|
667 #endif /* not MSDOS */
|
|
|
668 }
|
|
|
669
|
|
|
670 save_signal_handlers (saved_handlers);
|
|
|
671 synch_process_alive = 1;
|
|
|
672 #ifndef MSDOS
|
|
|
673 wait_for_termination (pid);
|
|
|
674 #endif
|
|
|
675 restore_signal_handlers (saved_handlers);
|
|
|
676 }
|
|
|
677
|
|
209
|
678 #endif /* !defined (SIGTSTP) && !defined (USG_JOBCTRL) */
|
|
0
|
679
|
|
|
680
|
|
|
681
|
|
|
682 /* Suspend the Emacs process; give terminal to its superior. */
|
|
|
683 void
|
|
|
684 sys_suspend (void)
|
|
|
685 {
|
|
209
|
686 #if defined (SIGTSTP) && !defined (MSDOS)
|
|
0
|
687 {
|
|
|
688 int pgrp = EMACS_GET_PROCESS_GROUP ();
|
|
|
689 EMACS_KILLPG (pgrp, SIGTSTP);
|
|
|
690 }
|
|
|
691
|
|
|
692 #elif defined (USG_JOBCTRL)
|
|
|
693 /* If you don't know what this is don't mess with it */
|
|
|
694 ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */
|
|
|
695 kill (getpid (), SIGQUIT);
|
|
|
696
|
|
|
697 #else /* No SIGTSTP or USG_JOBCTRL */
|
|
|
698
|
|
|
699 /* On a system where suspending is not implemented,
|
|
|
700 instead fork a subshell and let it talk directly to the terminal
|
|
|
701 while we wait. */
|
|
|
702 sys_subshell ();
|
|
|
703
|
|
|
704 #endif
|
|
|
705 }
|
|
|
706
|
|
108
|
707 /* Suspend a process if possible; give terminal to its superior. */
|
|
|
708 void
|
|
185
|
709 sys_suspend_process (int process)
|
|
108
|
710 {
|
|
|
711 /* I don't doubt that it is possible to suspend processes on
|
|
|
712 * VMS machines or thost that use USG_JOBCTRL,
|
|
|
713 * but I don't know how to do it, so...
|
|
|
714 */
|
|
|
715 #if defined (SIGTSTP) && !defined (MSDOS)
|
|
|
716 kill(process, SIGTSTP);
|
|
|
717 #endif
|
|
|
718 }
|
|
|
719
|
|
0
|
720 /* Set the logical window size associated with descriptor FD
|
|
|
721 to HEIGHT and WIDTH. This is used mainly with ptys. */
|
|
|
722
|
|
|
723 int
|
|
|
724 set_window_size (int fd, int height, int width)
|
|
|
725 {
|
|
|
726 #ifdef TIOCSWINSZ
|
|
|
727
|
|
|
728 /* BSD-style. */
|
|
|
729 struct winsize size;
|
|
|
730 size.ws_row = height;
|
|
|
731 size.ws_col = width;
|
|
|
732
|
|
|
733 if (ioctl (fd, TIOCSWINSZ, &size) == -1)
|
|
|
734 return 0; /* error */
|
|
|
735 else
|
|
|
736 return 1;
|
|
|
737
|
|
|
738 #elif defined (TIOCSSIZE)
|
|
|
739
|
|
|
740 /* SunOS - style. */
|
|
185
|
741 struct ttysize size;
|
|
0
|
742 size.ts_lines = height;
|
|
|
743 size.ts_cols = width;
|
|
|
744
|
|
|
745 if (ioctl (fd, TIOCGSIZE, &size) == -1)
|
|
|
746 return 0;
|
|
|
747 else
|
|
|
748 return 1;
|
|
|
749 #else
|
|
|
750 return -1;
|
|
|
751 #endif
|
|
|
752 }
|
|
|
753
|
|
|
754 #ifdef HAVE_PTYS
|
|
|
755
|
|
|
756 /* Set up the proper status flags for use of a pty. */
|
|
|
757
|
|
|
758 void
|
|
|
759 setup_pty (int fd)
|
|
|
760 {
|
|
|
761 /* I'm told that TOICREMOTE does not mean control chars
|
|
|
762 "can't be sent" but rather that they don't have
|
|
|
763 input-editing or signaling effects.
|
|
|
764 That should be good, because we have other ways
|
|
|
765 to do those things in Emacs.
|
|
|
766 However, telnet mode seems not to work on 4.2.
|
|
|
767 So TIOCREMOTE is turned off now. */
|
|
|
768
|
|
|
769 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
|
|
|
770 will hang. In particular, the "timeout" feature (which
|
|
|
771 causes a read to return if there is no data available)
|
|
|
772 does this. Also it is known that telnet mode will hang
|
|
|
773 in such a way that Emacs must be stopped (perhaps this
|
|
|
774 is the same problem).
|
|
185
|
775
|
|
0
|
776 If TIOCREMOTE is turned off, then there is a bug in
|
|
|
777 hp-ux which sometimes loses data. Apparently the
|
|
|
778 code which blocks the master process when the internal
|
|
|
779 buffer fills up does not work. Other than this,
|
|
|
780 though, everything else seems to work fine.
|
|
185
|
781
|
|
0
|
782 Since the latter lossage is more benign, we may as well
|
|
|
783 lose that way. -- cph */
|
|
|
784 #if defined (FIONBIO) && defined (SYSV_PTYS)
|
|
|
785 {
|
|
|
786 int on = 1;
|
|
|
787 ioctl (fd, FIONBIO, &on);
|
|
|
788 }
|
|
|
789 #endif
|
|
|
790 #ifdef IBMRTAIX
|
|
|
791 /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */
|
|
|
792 /* ignore SIGHUP once we've started a child on a pty. Note that this may */
|
|
|
793 /* cause EMACS not to die when it should, i.e., when its own controlling */
|
|
|
794 /* tty goes away. I've complained to the AIX developers, and they may */
|
|
|
795 /* change this behavior, but I'm not going to hold my breath. */
|
|
|
796 signal (SIGHUP, SIG_IGN);
|
|
|
797 #endif
|
|
|
798 #ifdef TIOCPKT
|
|
|
799 /* In some systems (Linux through 2.0.0, at least), packet mode doesn't
|
|
|
800 get cleared when a pty is closed, so we need to clear it here.
|
|
|
801 Linux pre2.0.13 contained an attempted fix for this (from Ted Ts'o,
|
|
|
802 tytso@mit.edu), but apparently it messed up rlogind and telnetd, so he
|
|
|
803 removed the fix in pre2.0.14. - dkindred@cs.cmu.edu
|
|
|
804 */
|
|
|
805 {
|
|
|
806 int off = 0;
|
|
|
807 ioctl (fd, TIOCPKT, (char *)&off);
|
|
|
808 }
|
|
|
809 #endif
|
|
|
810 }
|
|
|
811 #endif /* HAVE_PTYS */
|
|
|
812
|
|
|
813
|
|
|
814 /************************************************************************/
|
|
|
815 /* TTY control */
|
|
|
816 /************************************************************************/
|
|
|
817
|
|
|
818 /* ------------------------------------------------------ */
|
|
|
819 /* get baud rate */
|
|
|
820 /* ------------------------------------------------------ */
|
|
|
821
|
|
|
822 /* It really makes more sense for the baud-rate to be console-specific
|
|
|
823 and not device-specific, but it's (at least potentially) used for output
|
|
|
824 decisions. */
|
|
|
825
|
|
|
826 void
|
|
|
827 init_baud_rate (struct device *d)
|
|
|
828 {
|
|
|
829 struct console *con = XCONSOLE (DEVICE_CONSOLE (d));
|
|
|
830 if (DEVICE_WIN_P (d) || DEVICE_STREAM_P (d))
|
|
|
831 {
|
|
|
832 DEVICE_BAUD_RATE (d) = 38400;
|
|
|
833 return;
|
|
|
834 }
|
|
|
835
|
|
|
836 #ifdef HAVE_TTY
|
|
|
837 assert (DEVICE_TTY_P (d));
|
|
|
838 {
|
|
|
839 int input_fd = CONSOLE_TTY_DATA (con)->infd;
|
|
209
|
840 #if defined (MSDOS) || defined(WIN32)
|
|
0
|
841 DEVICE_TTY_DATA (d)->ospeed = 15;
|
|
|
842 #elif defined (HAVE_TERMIOS)
|
|
|
843 struct termios sg;
|
|
185
|
844
|
|
0
|
845 sg.c_cflag = B9600;
|
|
|
846 tcgetattr (input_fd, &sg);
|
|
|
847 DEVICE_TTY_DATA (d)->ospeed = cfgetospeed (&sg);
|
|
|
848 # if defined (USE_GETOBAUD) && defined (getobaud)
|
|
|
849 /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */
|
|
|
850 if (DEVICE_TTY_DATA (d)->ospeed == 0)
|
|
|
851 DEVICE_TTY_DATA (d)->ospeed = getobaud (sg.c_cflag);
|
|
|
852 # endif
|
|
|
853 #elif defined (HAVE_TERMIO)
|
|
|
854 struct termio sg;
|
|
185
|
855
|
|
0
|
856 sg.c_cflag = B9600;
|
|
|
857 # ifdef HAVE_TCATTR
|
|
|
858 tcgetattr (input_fd, &sg);
|
|
|
859 # else
|
|
|
860 ioctl (input_fd, TCGETA, &sg);
|
|
|
861 # endif
|
|
|
862 DEVICE_TTY_DATA (d)->ospeed = sg.c_cflag & CBAUD;
|
|
209
|
863 #else /* neither TERMIOS nor TERMIO */
|
|
0
|
864 struct sgttyb sg;
|
|
185
|
865
|
|
0
|
866 sg.sg_ospeed = B9600;
|
|
|
867 if (ioctl (input_fd, TIOCGETP, &sg) < 0)
|
|
|
868 abort ();
|
|
|
869 DEVICE_TTY_DATA (d)->ospeed = sg.sg_ospeed;
|
|
|
870 #endif
|
|
|
871 }
|
|
185
|
872
|
|
0
|
873 DEVICE_BAUD_RATE (d) =
|
|
|
874 (DEVICE_TTY_DATA (d)->ospeed < sizeof baud_convert / sizeof baud_convert[0]
|
|
|
875 ? baud_convert[DEVICE_TTY_DATA (d)->ospeed]
|
|
|
876 : 9600);
|
|
|
877
|
|
|
878 if (DEVICE_BAUD_RATE (d) == 0)
|
|
|
879 DEVICE_BAUD_RATE (d) = 1200;
|
|
|
880 #endif /* HAVE_TTY */
|
|
|
881 }
|
|
|
882
|
|
|
883
|
|
|
884 /* ------------------------------------------------------ */
|
|
|
885 /* SIGIO control */
|
|
|
886 /* ------------------------------------------------------ */
|
|
|
887
|
|
|
888 #ifdef SIGIO
|
|
|
889
|
|
|
890 static void
|
|
|
891 init_sigio_on_device (struct device *d)
|
|
|
892 {
|
|
|
893 int filedesc = DEVICE_INFD (d);
|
|
|
894
|
|
2
|
895 #if defined (I_SETSIG) && !defined(HPUX10)
|
|
0
|
896 ioctl (filedesc, I_GETSIG, &DEVICE_OLD_SIGIO_FLAG (d));
|
|
|
897 DEVICE_OLD_SIGIO_FLAG (d) &= ~S_INPUT;
|
|
|
898 #elif defined (FASYNC)
|
|
|
899 DEVICE_OLD_SIGIO_FLAG (d) =
|
|
|
900 fcntl (filedesc, F_GETFL, 0) & ~FASYNC;
|
|
|
901 #endif
|
|
|
902
|
|
|
903 #if defined (FIOSSAIOOWN)
|
|
|
904 { /* HPUX stuff */
|
|
|
905 int owner = getpid ();
|
|
|
906 int ioctl_status;
|
|
|
907 if (DEVICE_TTY_P (d))
|
|
|
908 {
|
|
|
909 ioctl_status = ioctl (filedesc, FIOGSAIOOWN,
|
|
|
910 &DEVICE_OLD_FCNTL_OWNER (d));
|
|
|
911 ioctl_status = ioctl (filedesc, FIOSSAIOOWN, &owner);
|
|
|
912 }
|
|
|
913 #ifdef HAVE_WINDOW_SYSTEM
|
|
|
914 else if (!DEVICE_STREAM_P (d))
|
|
|
915 {
|
|
|
916 ioctl_status = ioctl (filedesc, SIOCGPGRP,
|
|
|
917 &DEVICE_OLD_FCNTL_OWNER (d));
|
|
|
918 ioctl_status = ioctl (filedesc, SIOCSPGRP, &owner);
|
|
|
919 }
|
|
|
920 #endif
|
|
|
921 }
|
|
|
922 #elif defined (F_SETOWN) && !defined (F_SETOWN_BUG)
|
|
|
923 DEVICE_OLD_FCNTL_OWNER (d) = fcntl (filedesc, F_GETOWN, 0);
|
|
|
924 # ifdef F_SETOWN_SOCK_NEG
|
|
|
925 /* stdin is a socket here */
|
|
|
926 fcntl (filedesc, F_SETOWN, -getpid ());
|
|
|
927 # else
|
|
|
928 fcntl (filedesc, F_SETOWN, getpid ());
|
|
|
929 # endif
|
|
|
930 #endif
|
|
|
931 }
|
|
|
932
|
|
|
933 static void
|
|
|
934 reset_sigio_on_device (struct device *d)
|
|
|
935 {
|
|
|
936 int filedesc = DEVICE_INFD (d);
|
|
|
937
|
|
|
938 #if defined (FIOSSAIOOWN)
|
|
|
939 { /* HPUX stuff */
|
|
|
940 int owner = getpid ();
|
|
|
941 int ioctl_status;
|
|
|
942 if (DEVICE_TTY_P (d))
|
|
|
943 {
|
|
|
944 ioctl_status = ioctl (filedesc, FIOSSAIOOWN,
|
|
|
945 &DEVICE_OLD_FCNTL_OWNER (d));
|
|
|
946 }
|
|
|
947 #ifdef HAVE_WINDOW_SYSTEM
|
|
|
948 else if (!DEVICE_STREAM_P (d))
|
|
|
949 {
|
|
|
950 ioctl_status = ioctl (filedesc, SIOCSPGRP,
|
|
|
951 &DEVICE_OLD_FCNTL_OWNER (d));
|
|
|
952 }
|
|
|
953 #endif
|
|
|
954 }
|
|
|
955 #elif defined (F_SETOWN) && !defined (F_SETOWN_BUG)
|
|
|
956 fcntl (filedesc, F_SETOWN, DEVICE_OLD_FCNTL_OWNER (d));
|
|
|
957 #endif
|
|
|
958 }
|
|
|
959
|
|
|
960 static void
|
|
|
961 request_sigio_on_device (struct device *d)
|
|
|
962 {
|
|
|
963 int filedesc = DEVICE_INFD (d);
|
|
|
964
|
|
|
965 /* prevent redundant ioctl()s, which may cause syslog messages
|
|
|
966 (e.g. on Solaris) */
|
|
|
967 if (d->sigio_enabled)
|
|
|
968 return;
|
|
|
969
|
|
2
|
970 #if defined (I_SETSIG) && !defined(HPUX10)
|
|
0
|
971 ioctl (filedesc, I_SETSIG, DEVICE_OLD_SIGIO_FLAG (d) | S_INPUT);
|
|
|
972 #elif defined (FASYNC)
|
|
|
973 fcntl (filedesc, F_SETFL, DEVICE_OLD_SIGIO_FLAG (d) | FASYNC);
|
|
|
974 #elif defined (FIOSSAIOSTAT)
|
|
|
975 {
|
|
|
976 /* DG: Changed for HP-UX. HP-UX uses different IOCTLs for
|
|
|
977 sockets and other devices for some bizarre reason. We guess
|
|
|
978 that an X device is a socket, and tty devices aren't. We then
|
|
|
979 use the following crud to do the appropriate thing. */
|
|
|
980 int on = 1;
|
|
|
981 int ioctl_status; /* ####DG: check if IOCTL succeeds here. */
|
|
|
982
|
|
|
983 if (DEVICE_TTY_P (d))
|
|
|
984 {
|
|
|
985 ioctl_status = ioctl (filedesc, FIOSSAIOSTAT, &on);
|
|
|
986 }
|
|
|
987 #ifdef HAVE_WINDOW_SYSTEM
|
|
|
988 else if (!DEVICE_STREAM_P (d))
|
|
|
989 {
|
|
|
990 ioctl_status = ioctl (filedesc, FIOASYNC, &on);
|
|
|
991 }
|
|
|
992 #endif
|
|
|
993 }
|
|
|
994 #elif defined (FIOASYNC)
|
|
|
995 {
|
|
|
996 int on = 1;
|
|
|
997 ioctl (filedesc, FIOASYNC, &on);
|
|
|
998 }
|
|
|
999 #endif
|
|
|
1000
|
|
|
1001 #if defined (_CX_UX) /* #### Is this crap necessary? */
|
|
|
1002 EMACS_UNBLOCK_SIGNAL (SIGIO);
|
|
|
1003 #endif
|
|
|
1004
|
|
|
1005 d->sigio_enabled = 1;
|
|
|
1006 }
|
|
|
1007
|
|
|
1008 static void
|
|
|
1009 unrequest_sigio_on_device (struct device *d)
|
|
|
1010 {
|
|
|
1011 int filedesc = DEVICE_INFD (d);
|
|
|
1012
|
|
|
1013 /* prevent redundant ioctl()s, which may cause syslog messages
|
|
|
1014 (e.g. on Solaris) */
|
|
|
1015 if (!d->sigio_enabled)
|
|
|
1016 return;
|
|
|
1017
|
|
2
|
1018 #if defined (I_SETSIG) && !defined(HPUX10)
|
|
0
|
1019 ioctl (filedesc, I_SETSIG, DEVICE_OLD_SIGIO_FLAG (d));
|
|
|
1020 #elif defined (FASYNC)
|
|
|
1021 fcntl (filedesc, F_SETFL, DEVICE_OLD_SIGIO_FLAG (d));
|
|
|
1022 #elif defined (FIOSSAIOSTAT)
|
|
|
1023 {
|
|
|
1024 /* DG: Changed for HP-UX. HP-UX uses different IOCTLs for
|
|
|
1025 sockets and other devices for some bizarre reason. We guess
|
|
|
1026 that an X device is a socket, and tty devices aren't. We then
|
|
|
1027 use the following crud to do the appropriate thing. */
|
|
|
1028
|
|
|
1029 int off = 0;
|
|
|
1030 int ioctl_status;
|
|
|
1031
|
|
|
1032 /* See comment for request_sigio_on_device */
|
|
|
1033
|
|
|
1034 if (DEVICE_TTY_P (d))
|
|
|
1035 {
|
|
|
1036 ioctl_status = ioctl (filedesc, FIOSSAIOSTAT, &off);
|
|
|
1037 }
|
|
185
|
1038 else
|
|
0
|
1039 {
|
|
|
1040 ioctl_status = ioctl (filedesc, FIOASYNC, &off);
|
|
|
1041 }
|
|
|
1042 }
|
|
|
1043 #elif defined (FIOASYNC)
|
|
|
1044 {
|
|
|
1045 int off = 0;
|
|
|
1046 ioctl (filedesc, FIOASYNC, &off);
|
|
|
1047 }
|
|
|
1048 #endif
|
|
|
1049
|
|
|
1050 d->sigio_enabled = 0;
|
|
|
1051 }
|
|
|
1052
|
|
|
1053 void
|
|
|
1054 request_sigio (void)
|
|
|
1055 {
|
|
|
1056 Lisp_Object devcons, concons;
|
|
|
1057
|
|
|
1058 DEVICE_LOOP_NO_BREAK (devcons, concons)
|
|
|
1059 {
|
|
|
1060 struct device *d;
|
|
|
1061
|
|
|
1062 d = XDEVICE (XCAR (devcons));
|
|
|
1063
|
|
|
1064 if (!DEVICE_STREAM_P (d))
|
|
|
1065 request_sigio_on_device (d);
|
|
|
1066 }
|
|
|
1067 }
|
|
|
1068
|
|
|
1069 void
|
|
|
1070 unrequest_sigio (void)
|
|
|
1071 {
|
|
|
1072 Lisp_Object devcons, concons;
|
|
|
1073
|
|
|
1074 DEVICE_LOOP_NO_BREAK (devcons, concons)
|
|
|
1075 {
|
|
|
1076 struct device *d;
|
|
|
1077
|
|
|
1078 d = XDEVICE (XCAR (devcons));
|
|
|
1079
|
|
|
1080 if (!DEVICE_STREAM_P (d))
|
|
|
1081 unrequest_sigio_on_device (d);
|
|
|
1082 }
|
|
|
1083 }
|
|
|
1084
|
|
|
1085 #endif /* SIGIO */
|
|
|
1086
|
|
|
1087 /* ------------------------------------------------------ */
|
|
|
1088 /* Changing Emacs's process group */
|
|
|
1089 /* ------------------------------------------------------ */
|
|
|
1090
|
|
|
1091 /* Saving and restoring the process group of Emacs's terminal. */
|
|
|
1092
|
|
|
1093 /* On some systems, apparently (?!) Emacs must be in its own process
|
|
|
1094 group in order to receive SIGIO correctly. On other systems
|
|
|
1095 (e.g. Solaris), it's not required and doing it makes things
|
|
|
1096 get fucked up. So, we only do it when
|
|
|
1097 SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP is defined. Basically,
|
|
|
1098 this is only required for BSD 4.2 systems. (Actually, I bet
|
|
|
1099 we don't have to do this at all -- those systems also
|
|
|
1100 required interrupt input, which we don't support.)
|
|
|
1101
|
|
|
1102 If Emacs was in its own process group (i.e. inherited_pgroup ==
|
|
|
1103 getpid ()), then we know we're running under a shell with job
|
|
|
1104 control (Emacs would never be run as part of a pipeline).
|
|
|
1105 Everything is fine.
|
|
|
1106
|
|
|
1107 If Emacs was not in its own process group, then we know we're
|
|
|
1108 running under a shell (or a caller) that doesn't know how to
|
|
|
1109 separate itself from Emacs (like sh). Emacs must be in its own
|
|
|
1110 process group in order to receive SIGIO correctly. In this
|
|
|
1111 situation, we put ourselves in our own pgroup, forcibly set the
|
|
|
1112 tty's pgroup to our pgroup, and make sure to restore and reinstate
|
|
|
1113 the tty's pgroup just like any other terminal setting. If
|
|
|
1114 inherited_group was not the tty's pgroup, then we'll get a
|
|
|
1115 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
|
|
|
1116 it goes foreground in the future, which is what should happen. */
|
|
|
1117
|
|
|
1118 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP
|
|
|
1119
|
|
|
1120 static int inherited_pgroup;
|
|
|
1121 static int inherited_tty_pgroup;
|
|
|
1122
|
|
|
1123 #endif
|
|
|
1124
|
|
|
1125 void
|
|
|
1126 munge_tty_process_group (void)
|
|
|
1127 {
|
|
|
1128 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP
|
|
|
1129 if (noninteractive)
|
|
|
1130 return;
|
|
|
1131
|
|
|
1132 /* Only do this munging if we have a device on the controlling
|
|
|
1133 terminal. See the large comment below. */
|
|
|
1134
|
|
|
1135 if (CONSOLEP (Vcontrolling_terminal) &&
|
|
|
1136 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal)))
|
|
|
1137 {
|
|
|
1138 int fd = open ("/dev/tty", O_RDWR, 0);
|
|
|
1139 int me = getpid ();
|
|
|
1140 EMACS_BLOCK_SIGNAL (SIGTTOU);
|
|
|
1141 EMACS_SET_TTY_PROCESS_GROUP (fd, &me);
|
|
|
1142 EMACS_UNBLOCK_SIGNAL (SIGTTOU);
|
|
|
1143 close (fd);
|
|
|
1144 }
|
|
|
1145 #endif
|
|
|
1146 }
|
|
|
1147
|
|
|
1148 /* Split off the foreground process group to Emacs alone.
|
|
|
1149 When we are in the foreground, but not started in our own process
|
|
|
1150 group, redirect the TTY to point to our own process group. We need
|
|
|
1151 to be in our own process group to receive SIGIO properly. */
|
|
|
1152 static void
|
|
|
1153 munge_process_groups (void)
|
|
|
1154 {
|
|
|
1155 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP
|
|
|
1156 if (noninteractive)
|
|
|
1157 return;
|
|
|
1158
|
|
|
1159 EMACS_SEPARATE_PROCESS_GROUP ();
|
|
|
1160
|
|
|
1161 munge_tty_process_group ();
|
|
|
1162 #endif
|
|
|
1163 }
|
|
|
1164
|
|
|
1165 void
|
|
|
1166 unmunge_tty_process_group (void)
|
|
|
1167 {
|
|
|
1168 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP
|
|
|
1169 {
|
|
|
1170 int fd = open ("/dev/tty", O_RDWR, 0);
|
|
|
1171 EMACS_BLOCK_SIGNAL (SIGTTOU);
|
|
|
1172 EMACS_SET_TTY_PROCESS_GROUP (fd, &inherited_tty_pgroup);
|
|
|
1173 EMACS_UNBLOCK_SIGNAL (SIGTTOU);
|
|
|
1174 close (fd);
|
|
|
1175 }
|
|
|
1176 #endif
|
|
|
1177 }
|
|
|
1178
|
|
|
1179 /* Set the tty to our original foreground group.
|
|
|
1180 Also restore the original process group (put us back into sh's
|
|
|
1181 process group), so that ^Z will suspend both us and sh. */
|
|
|
1182 static void
|
|
|
1183 unmunge_process_groups (void)
|
|
|
1184 {
|
|
|
1185 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP
|
|
|
1186 if (noninteractive)
|
|
|
1187 return;
|
|
|
1188
|
|
|
1189 unmunge_tty_process_group ();
|
|
|
1190
|
|
|
1191 EMACS_SET_PROCESS_GROUP (inherited_pgroup);
|
|
|
1192 #endif
|
|
|
1193 }
|
|
|
1194
|
|
|
1195 /* According to some old wisdom, we need to be in a separate process
|
|
|
1196 group for SIGIO to work correctly (at least on some systems ...).
|
|
|
1197 So go ahead and put ourselves into our own process group. This
|
|
|
1198 will fail if we're already in our own process group, but who cares.
|
|
|
1199 Also record whether we were in our own process group. (In general,
|
|
|
1200 we will already be in our own process group if we were started from
|
|
|
1201 a job-control shell like csh, but not if we were started from sh).
|
|
185
|
1202
|
|
0
|
1203 If we succeeded in changing our process group, then we will no
|
|
|
1204 longer be in the foreground process group of our controlling
|
|
|
1205 terminal. Therefore, if we have a console open onto this terminal,
|
|
|
1206 we have to change the controlling terminal's foreground process
|
|
|
1207 group (otherwise we will get stopped with a SIGTTIN signal when
|
|
|
1208 attempting to read from the terminal). It's important,
|
|
|
1209 however, that we do this *only* when we have a console open onto
|
|
|
1210 the terminal. It's a decidedly bad idea to do so otherwise,
|
|
|
1211 especially if XEmacs was started from the background. */
|
|
|
1212
|
|
|
1213 void
|
|
|
1214 init_process_group (void)
|
|
|
1215 {
|
|
|
1216 #ifdef SIGIO_REQUIRES_SEPARATE_PROCESS_GROUP
|
|
|
1217 if (! noninteractive)
|
|
|
1218 {
|
|
|
1219 int fd = open ("/dev/tty", O_RDWR, 0);
|
|
|
1220 inherited_pgroup = EMACS_GET_PROCESS_GROUP ();
|
|
|
1221 EMACS_GET_TTY_PROCESS_GROUP (fd, &inherited_tty_pgroup);
|
|
|
1222 close (fd);
|
|
|
1223 EMACS_SEPARATE_PROCESS_GROUP ();
|
|
|
1224 }
|
|
|
1225 #endif
|
|
|
1226 }
|
|
|
1227
|
|
|
1228 void
|
|
|
1229 disconnect_controlling_terminal (void)
|
|
|
1230 {
|
|
|
1231 # ifdef HAVE_SETSID
|
|
|
1232 /* Controlling terminals are attached to a session.
|
|
|
1233 Create a new session for us; it will have no controlling
|
|
|
1234 terminal. This also, of course, puts us in our own
|
|
|
1235 process group. */
|
|
|
1236 setsid ();
|
|
|
1237 # else
|
|
|
1238 /* Put us in our own process group. */
|
|
|
1239 EMACS_SEPARATE_PROCESS_GROUP ();
|
|
|
1240 # if defined (TIOCNOTTY)
|
|
|
1241 /* This is the older way of disconnecting the controlling
|
|
|
1242 terminal, on 4.3 BSD. We must open /dev/tty; using
|
|
|
1243 filedesc 0 is not sufficient because it could be
|
|
|
1244 something else (e.g. our stdin was redirected to
|
|
|
1245 another terminal).
|
|
|
1246 */
|
|
|
1247 {
|
|
|
1248 int j = open ("/dev/tty", O_RDWR, 0);
|
|
|
1249 ioctl (j, TIOCNOTTY, 0);
|
|
|
1250 close (j);
|
|
|
1251 }
|
|
|
1252 # endif /* TIOCNOTTY */
|
|
|
1253 /*
|
|
|
1254 On systems without TIOCNOTTY and without
|
|
|
1255 setsid(), we don't need to do anything more to
|
|
|
1256 disconnect our controlling terminal. Here is
|
|
|
1257 what the man page for termio(7) from a SYSV 3.2
|
|
|
1258 system says:
|
|
185
|
1259
|
|
0
|
1260 "The first terminal file opened by the process group leader
|
|
|
1261 of a terminal file not already associated with a process
|
|
|
1262 group becomes the control terminal for that process group.
|
|
|
1263 The control terminal plays a special role in handling quit
|
|
|
1264 and interrupt signals, as discussed below. The control
|
|
|
1265 terminal is inherited by a child process during a fork(2).
|
|
|
1266 A process can break this association by changing its process
|
|
|
1267 group using setpgrp(2)."
|
|
185
|
1268
|
|
0
|
1269 */
|
|
|
1270 # endif /* not HAVE_SETSID */
|
|
|
1271 }
|
|
|
1272
|
|
|
1273
|
|
|
1274 /* ------------------------------------------------------ */
|
|
|
1275 /* Getting and setting emacs_tty structures */
|
|
|
1276 /* ------------------------------------------------------ */
|
|
|
1277
|
|
153
|
1278 /* It's wrong to encase these into #ifdef HAVE_TTY because we need
|
|
|
1279 them for child TTY processes. */
|
|
157
|
1280 /* However, this does break NT support while we don't do child TTY processes */
|
|
|
1281 #ifndef WINDOWSNT
|
|
100
|
1282
|
|
0
|
1283 /* Set *TC to the parameters associated with the terminal FD.
|
|
|
1284 Return zero if all's well, or -1 if we ran into an error we
|
|
|
1285 couldn't deal with. */
|
|
|
1286 int
|
|
|
1287 emacs_get_tty (int fd, struct emacs_tty *settings)
|
|
|
1288 {
|
|
|
1289 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
|
|
|
1290 #ifdef HAVE_TCATTR
|
|
|
1291 /* We have those nifty POSIX tcmumbleattr functions. */
|
|
|
1292 if (tcgetattr (fd, &settings->main) < 0)
|
|
|
1293 return -1;
|
|
|
1294
|
|
209
|
1295 #elif defined HAVE_TERMIO
|
|
0
|
1296 /* The SYSV-style interface? */
|
|
|
1297 if (ioctl (fd, TCGETA, &settings->main) < 0)
|
|
|
1298 return -1;
|
|
|
1299
|
|
209
|
1300 #elif !defined MSDOS && !defined(WIN32)
|
|
0
|
1301 /* I give up - I hope you have the BSD ioctls. */
|
|
|
1302 if (ioctl (fd, TIOCGETP, &settings->main) < 0)
|
|
|
1303 return -1;
|
|
|
1304 #endif /* HAVE_TCATTR */
|
|
|
1305
|
|
|
1306 /* Suivant - Do we have to get struct ltchars data? */
|
|
|
1307 #ifdef HAVE_LTCHARS
|
|
|
1308 if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0)
|
|
|
1309 return -1;
|
|
|
1310 #endif
|
|
|
1311
|
|
|
1312 /* How about a struct tchars and a wordful of lmode bits? */
|
|
|
1313 #ifdef HAVE_TCHARS
|
|
|
1314 if (ioctl (fd, TIOCGETC, &settings->tchars) < 0
|
|
|
1315 || ioctl (fd, TIOCLGET, &settings->lmode) < 0)
|
|
|
1316 return -1;
|
|
|
1317 #endif
|
|
|
1318
|
|
|
1319 /* We have survived the tempest. */
|
|
|
1320 return 0;
|
|
|
1321 }
|
|
|
1322
|
|
|
1323 /* Set the parameters of the tty on FD according to the contents of
|
|
|
1324 *SETTINGS. If FLUSHP is non-zero, we discard input.
|
|
|
1325 Return 0 if all went well, and -1 if anything failed. */
|
|
|
1326
|
|
|
1327 int
|
|
|
1328 emacs_set_tty (int fd, struct emacs_tty *settings, int flushp)
|
|
|
1329 {
|
|
|
1330 /* Set the primary parameters - baud rate, character size, etcetera. */
|
|
|
1331 #ifdef HAVE_TCATTR
|
|
|
1332 int i;
|
|
|
1333 /* We have those nifty POSIX tcmumbleattr functions.
|
|
|
1334 William J. Smith <wjs@wiis.wang.com> writes:
|
|
|
1335 "POSIX 1003.1 defines tcsetattr() to return success if it was
|
|
|
1336 able to perform any of the requested actions, even if some
|
|
|
1337 of the requested actions could not be performed.
|
|
|
1338 We must read settings back to ensure tty setup properly.
|
|
|
1339 AIX requires this to keep tty from hanging occasionally." */
|
|
|
1340 /* This makes sure that we don't loop indefinitely in here. */
|
|
|
1341 for (i = 0 ; i < 10 ; i++)
|
|
|
1342 if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0)
|
|
|
1343 {
|
|
|
1344 if (errno == EINTR)
|
|
|
1345 continue;
|
|
|
1346 else
|
|
|
1347 return -1;
|
|
|
1348 }
|
|
|
1349 else
|
|
|
1350 {
|
|
|
1351 struct termios new;
|
|
|
1352
|
|
|
1353 /* Get the current settings, and see if they're what we asked for. */
|
|
|
1354 tcgetattr (fd, &new);
|
|
|
1355 /* We cannot use memcmp on the whole structure here because under
|
|
|
1356 * aix386 the termios structure has some reserved field that may
|
|
|
1357 * not be filled in.
|
|
|
1358 */
|
|
|
1359 if ( new.c_iflag == settings->main.c_iflag
|
|
|
1360 && new.c_oflag == settings->main.c_oflag
|
|
|
1361 && new.c_cflag == settings->main.c_cflag
|
|
|
1362 && new.c_lflag == settings->main.c_lflag
|
|
|
1363 && memcmp(new.c_cc, settings->main.c_cc, NCCS) == 0)
|
|
|
1364 break;
|
|
|
1365 else
|
|
|
1366 continue;
|
|
|
1367 }
|
|
209
|
1368 #elif defined HAVE_TERMIO
|
|
0
|
1369 /* The SYSV-style interface? */
|
|
|
1370 if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0)
|
|
|
1371 return -1;
|
|
|
1372
|
|
209
|
1373 #elif !defined(MSDOS) && !defined(WIN32)
|
|
0
|
1374 /* I give up - I hope you have the BSD ioctls. */
|
|
|
1375 if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0)
|
|
|
1376 return -1;
|
|
|
1377 #endif /* HAVE_TCATTR */
|
|
|
1378
|
|
|
1379 /* Suivant - Do we have to get struct ltchars data? */
|
|
|
1380 #ifdef HAVE_LTCHARS
|
|
|
1381 if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0)
|
|
|
1382 return -1;
|
|
|
1383 #endif
|
|
|
1384
|
|
|
1385 /* How about a struct tchars and a wordful of lmode bits? */
|
|
|
1386 #ifdef HAVE_TCHARS
|
|
|
1387 if (ioctl (fd, TIOCSETC, &settings->tchars) < 0
|
|
|
1388 || ioctl (fd, TIOCLSET, &settings->lmode) < 0)
|
|
|
1389 return -1;
|
|
|
1390 #endif
|
|
185
|
1391
|
|
0
|
1392 /* We have survived the tempest. */
|
|
|
1393 return 0;
|
|
|
1394 }
|
|
|
1395
|
|
157
|
1396 #endif /* WINDOWSNT */
|
|
0
|
1397
|
|
|
1398 /* ------------------------------------------------------ */
|
|
|
1399 /* Initializing a device */
|
|
|
1400 /* ------------------------------------------------------ */
|
|
|
1401
|
|
|
1402 #ifdef HAVE_TTY
|
|
|
1403
|
|
|
1404 /* This may also be defined in stdio,
|
|
|
1405 but if so, this does no harm,
|
|
|
1406 and using the same name avoids wasting the other one's space. */
|
|
|
1407
|
|
|
1408 #if ((defined(USG) || defined(DGUX)) && !defined(__STDC__))
|
|
|
1409 char _sobuf[BUFSIZ+8];
|
|
|
1410 #elif (defined(USG) && !defined(LINUX) && !defined(_SCO_DS)) || defined(IRIX5)
|
|
|
1411 extern unsigned char _sobuf[BUFSIZ+8];
|
|
|
1412 #else
|
|
|
1413 char _sobuf[BUFSIZ];
|
|
|
1414 #endif
|
|
185
|
1415
|
|
0
|
1416 #if defined (TIOCGLTC) && defined (HAVE_LTCHARS) /* HAVE_LTCHARS */
|
|
|
1417 static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1};
|
|
|
1418 #endif
|
|
|
1419 #ifdef TIOCGETC /* HAVE_TCHARS */
|
|
|
1420 #ifdef HAVE_TCHARS
|
|
|
1421 static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1};
|
|
|
1422 #endif
|
|
185
|
1423 #endif
|
|
0
|
1424
|
|
|
1425 static void
|
|
|
1426 tty_init_sys_modes_on_device (struct device *d)
|
|
|
1427 {
|
|
|
1428 struct emacs_tty tty;
|
|
|
1429 int input_fd, output_fd;
|
|
|
1430 struct console *con = XCONSOLE (DEVICE_CONSOLE (d));
|
|
|
1431
|
|
|
1432 input_fd = CONSOLE_TTY_DATA (con)->infd;
|
|
|
1433 output_fd = CONSOLE_TTY_DATA (con)->outfd;
|
|
|
1434
|
|
|
1435 EMACS_GET_TTY (input_fd, &CONSOLE_TTY_DATA (con)->old_tty);
|
|
|
1436 tty = CONSOLE_TTY_DATA (con)->old_tty;
|
|
|
1437
|
|
155
|
1438 con->tty_erase_char = Qnil;
|
|
|
1439
|
|
0
|
1440 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
|
|
155
|
1441 /* after all those years... */
|
|
|
1442 con->tty_erase_char = make_char (tty.main.c_cc[VERASE]);
|
|
0
|
1443 #ifdef DGUX
|
|
|
1444 /* This allows meta to be sent on 8th bit. */
|
|
|
1445 tty.main.c_iflag &= ~INPCK; /* don't check input for parity */
|
|
|
1446 #endif
|
|
|
1447 tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */
|
|
|
1448 tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */
|
|
|
1449 #ifdef ISTRIP
|
|
|
1450 tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */
|
|
|
1451 #endif
|
|
|
1452 tty.main.c_lflag &= ~ECHO; /* Disable echo */
|
|
|
1453 tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */
|
|
|
1454 #ifdef IEXTEN
|
|
|
1455 tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */
|
|
|
1456 #endif
|
|
|
1457 tty.main.c_lflag |= ISIG; /* Enable signals */
|
|
|
1458 if (TTY_FLAGS (con).flow_control)
|
|
|
1459 {
|
|
|
1460 tty.main.c_iflag |= IXON; /* Enable start/stop output control */
|
|
|
1461 #ifdef IXANY
|
|
|
1462 tty.main.c_iflag &= ~IXANY;
|
|
|
1463 #endif /* IXANY */
|
|
|
1464 }
|
|
|
1465 else
|
|
|
1466 tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */
|
|
185
|
1467 tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL
|
|
0
|
1468 on output */
|
|
|
1469 tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */
|
|
|
1470 #ifdef CS8
|
|
|
1471 if (TTY_FLAGS (con).meta_key)
|
|
|
1472 {
|
|
|
1473 tty.main.c_cflag |= CS8; /* allow 8th bit on input */
|
|
|
1474 tty.main.c_cflag &= ~PARENB;/* Don't check parity */
|
|
|
1475 }
|
|
|
1476 #endif
|
|
|
1477 if (CONSOLE_TTY_DATA (con)->controlling_terminal)
|
|
|
1478 {
|
|
|
1479 tty.main.c_cc[VINTR] =
|
|
|
1480 CONSOLE_QUIT_CHAR (con); /* C-g (usually) gives SIGINT */
|
|
|
1481 /* Set up C-g for both SIGQUIT and SIGINT.
|
|
|
1482 We don't know which we will get, but we handle both alike
|
|
|
1483 so which one it really gives us does not matter. */
|
|
|
1484 tty.main.c_cc[VQUIT] = CONSOLE_QUIT_CHAR (con);
|
|
|
1485 }
|
|
|
1486 else
|
|
|
1487 {
|
|
|
1488 tty.main.c_cc[VINTR] = CDISABLE;
|
|
|
1489 tty.main.c_cc[VQUIT] = CDISABLE;
|
|
|
1490 }
|
|
|
1491 tty.main.c_cc[VMIN] = 1; /* Input should wait for at
|
|
|
1492 least 1 char */
|
|
|
1493 tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */
|
|
|
1494 #ifdef VSWTCH
|
|
|
1495 tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use
|
|
|
1496 of C-z */
|
|
|
1497 #endif /* VSWTCH */
|
|
|
1498 /* There was some conditionalizing here on (mips or TCATTR), but
|
|
|
1499 I think that's wrong. There was one report of C-y (DSUSP) not being
|
|
|
1500 disabled on HP9000s700 systems, and this might fix it. */
|
|
|
1501 #ifdef VSUSP
|
|
|
1502 tty.main.c_cc[VSUSP] = CDISABLE;/* Turn off mips handling of C-z. */
|
|
|
1503 #endif /* VSUSP */
|
|
|
1504 #ifdef V_DSUSP
|
|
|
1505 tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y. */
|
|
|
1506 #endif /* V_DSUSP */
|
|
|
1507 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
|
|
|
1508 tty.main.c_cc[VDSUSP] = CDISABLE;
|
|
|
1509 #endif /* VDSUSP */
|
|
|
1510 #ifdef VLNEXT
|
|
|
1511 tty.main.c_cc[VLNEXT] = CDISABLE;
|
|
|
1512 #endif /* VLNEXT */
|
|
|
1513 #ifdef VREPRINT
|
|
|
1514 tty.main.c_cc[VREPRINT] = CDISABLE;
|
|
|
1515 #endif /* VREPRINT */
|
|
|
1516 #ifdef VWERASE
|
|
|
1517 tty.main.c_cc[VWERASE] = CDISABLE;
|
|
|
1518 #endif /* VWERASE */
|
|
|
1519 #ifdef VDISCARD
|
|
|
1520 tty.main.c_cc[VDISCARD] = CDISABLE;
|
|
|
1521 #endif /* VDISCARD */
|
|
|
1522 #ifdef VSTART
|
|
|
1523 tty.main.c_cc[VSTART] = CDISABLE;
|
|
|
1524 #endif /* VSTART */
|
|
|
1525 #ifdef VSTRT
|
|
|
1526 tty.main.c_cc[VSTRT] = CDISABLE; /* called VSTRT on some systems */
|
|
|
1527 #endif /* VSTART */
|
|
|
1528 #ifdef VSTOP
|
|
|
1529 tty.main.c_cc[VSTOP] = CDISABLE;
|
|
|
1530 #endif /* VSTOP */
|
|
|
1531 #ifdef SET_LINE_DISCIPLINE
|
|
|
1532 /* Need to explicitely request TERMIODISC line discipline or
|
|
|
1533 Ultrix's termios does not work correctly. */
|
|
|
1534 tty.main.c_line = SET_LINE_DISCIPLINE;
|
|
|
1535 #endif
|
|
185
|
1536
|
|
0
|
1537 #ifdef AIX
|
|
|
1538 #ifndef IBMR2AIX
|
|
|
1539 /* AIX enhanced edit loses NULs, so disable it. */
|
|
|
1540 tty.main.c_line = 0;
|
|
|
1541 tty.main.c_iflag &= ~ASCEDIT;
|
|
|
1542 #else
|
|
|
1543 tty.main.c_cc[VSTRT] = 255;
|
|
|
1544 tty.main.c_cc[VSTOP] = 255;
|
|
|
1545 tty.main.c_cc[VSUSP] = 255;
|
|
|
1546 tty.main.c_cc[VDSUSP] = 255;
|
|
|
1547 #endif /* IBMR2AIX */
|
|
|
1548 /* Also, PTY overloads NUL and BREAK.
|
|
|
1549 don't ignore break, but don't signal either, so it looks like NUL.
|
|
|
1550 This really serves a purpose only if running in an XTERM window
|
|
|
1551 or via TELNET or the like, but does no harm elsewhere. */
|
|
|
1552 tty.main.c_iflag &= ~IGNBRK;
|
|
|
1553 tty.main.c_iflag &= ~BRKINT;
|
|
|
1554 #endif /* AIX */
|
|
|
1555 #else /* if not HAVE_TERMIO */
|
|
209
|
1556 #if !defined(MSDOS) && !defined(WIN32)
|
|
155
|
1557 con->tty_erase_char = make_char (tty.main.sg_erase);
|
|
0
|
1558 tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS);
|
|
|
1559 if (TTY_FLAGS (con).meta_key)
|
|
|
1560 tty.main.sg_flags |= ANYP;
|
|
|
1561 /* #### should we be using RAW mode here? */
|
|
|
1562 tty.main.sg_flags |= /* interrupt_input ? RAW : */ CBREAK;
|
|
209
|
1563 #endif /* not MSDOS or WIN32 */
|
|
0
|
1564 #endif /* not HAVE_TERMIO */
|
|
185
|
1565
|
|
0
|
1566 /* If going to use CBREAK mode, we must request C-g to interrupt
|
|
|
1567 and turn off start and stop chars, etc. If not going to use
|
|
|
1568 CBREAK mode, do this anyway so as to turn off local flow
|
|
|
1569 control for user coming over network on 4.2; in this case,
|
|
|
1570 only t_stopc and t_startc really matter. */
|
|
|
1571 #ifndef HAVE_TERMIO
|
|
|
1572 #ifdef HAVE_TCHARS
|
|
|
1573 /* Note: if not using CBREAK mode, it makes no difference how we
|
|
|
1574 set this */
|
|
|
1575 tty.tchars = new_tchars;
|
|
|
1576 tty.tchars.t_intrc = CONSOLE_QUIT_CHAR (con);
|
|
|
1577 if (TTY_FLAGS (con).flow_control)
|
|
|
1578 {
|
|
|
1579 tty.tchars.t_startc = '\021';
|
|
|
1580 tty.tchars.t_stopc = '\023';
|
|
|
1581 }
|
|
185
|
1582
|
|
0
|
1583 tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH |
|
|
|
1584 CONSOLE_TTY_DATA (con)->old_tty.lmode;
|
|
185
|
1585
|
|
0
|
1586 #if defined (ultrix) || defined (__bsdi__)
|
|
|
1587 /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt
|
|
|
1588 anything, and leaving it in breaks the meta key. Go figure. */
|
|
|
1589 /* Turning off ONLCR is enough under BSD/386. Leave the general
|
|
|
1590 output post-processing flag alone since for some reason it
|
|
|
1591 doesn't get reset after XEmacs goes away. */
|
|
|
1592 tty.lmode &= ~LLITOUT;
|
|
|
1593 #endif
|
|
185
|
1594
|
|
0
|
1595 #endif /* HAVE_TCHARS */
|
|
|
1596 #endif /* not HAVE_TERMIO */
|
|
185
|
1597
|
|
0
|
1598 #ifdef HAVE_LTCHARS
|
|
|
1599 tty.ltchars = new_ltchars;
|
|
|
1600 #endif /* HAVE_LTCHARS */
|
|
|
1601 #ifdef MSDOS
|
|
|
1602 internal_terminal_init ();
|
|
|
1603 dos_ttraw ();
|
|
|
1604 #endif
|
|
185
|
1605
|
|
0
|
1606 EMACS_SET_TTY (input_fd, &tty, 0);
|
|
185
|
1607
|
|
0
|
1608 /* This code added to insure that, if flow-control is not to be used,
|
|
|
1609 we have an unlocked terminal at the start. */
|
|
185
|
1610
|
|
0
|
1611 #ifdef TCXONC
|
|
|
1612 if (!TTY_FLAGS (con).flow_control) ioctl (input_fd, TCXONC, 1);
|
|
|
1613 #endif
|
|
|
1614 #ifndef APOLLO
|
|
|
1615 #ifdef TIOCSTART
|
|
|
1616 if (!TTY_FLAGS (con).flow_control) ioctl (input_fd, TIOCSTART, 0);
|
|
|
1617 #endif
|
|
|
1618 #endif
|
|
185
|
1619
|
|
0
|
1620 #if defined (HAVE_TERMIOS) || defined (HPUX9)
|
|
|
1621 #ifdef TCOON
|
|
|
1622 if (!TTY_FLAGS (con).flow_control) tcflow (input_fd, TCOON);
|
|
|
1623 #endif
|
|
|
1624 #endif
|
|
|
1625 #ifdef AIXHFT
|
|
|
1626 hft_init (con);
|
|
|
1627 #ifdef IBMR2AIX
|
|
|
1628 {
|
|
|
1629 /* IBM's HFT device usually thinks a ^J should be LF/CR.
|
|
|
1630 We need it to be only LF. This is the way that is
|
|
|
1631 done. */
|
|
|
1632 struct termio tty;
|
|
185
|
1633
|
|
0
|
1634 if (ioctl (output_fd, HFTGETID, &tty) != -1)
|
|
|
1635 write (output_fd, "\033[20l", 5);
|
|
|
1636 }
|
|
|
1637 #endif
|
|
|
1638 #endif
|
|
|
1639
|
|
|
1640 #if 0 /* We do our own buffering with lstreams. */
|
|
|
1641 #ifdef _IOFBF
|
|
|
1642 /* This symbol is defined on recent USG systems.
|
|
|
1643 Someone says without this call USG won't really buffer the file
|
|
|
1644 even with a call to setbuf. */
|
|
|
1645 setvbuf (CONSOLE_TTY_DATA (con)->outfd, (char *) _sobuf, _IOFBF, sizeof _sobuf);
|
|
|
1646 #else
|
|
|
1647 setbuf (CONSOLE_TTY_DATA (con)->outfd, (char *) _sobuf);
|
|
|
1648 #endif
|
|
|
1649 #endif
|
|
|
1650 set_tty_modes (con);
|
|
|
1651 }
|
|
|
1652
|
|
|
1653 #endif /* HAVE_TTY */
|
|
|
1654
|
|
|
1655 void
|
|
|
1656 init_one_device (struct device *d)
|
|
|
1657 {
|
|
|
1658 #ifdef HAVE_TTY
|
|
|
1659 if (DEVICE_TTY_P (d))
|
|
|
1660 tty_init_sys_modes_on_device (d);
|
|
|
1661 #endif
|
|
|
1662 #ifdef SIGIO
|
|
|
1663 if (!DEVICE_STREAM_P (d))
|
|
|
1664 {
|
|
|
1665 init_sigio_on_device (d);
|
|
|
1666 request_sigio_on_device (d);
|
|
|
1667 }
|
|
|
1668 #endif
|
|
|
1669 }
|
|
|
1670
|
|
|
1671 void
|
|
|
1672 init_one_console (struct console *con)
|
|
|
1673 {
|
|
|
1674 Lisp_Object devcons;
|
|
|
1675
|
|
|
1676 CONSOLE_DEVICE_LOOP (devcons, con)
|
|
|
1677 {
|
|
|
1678 struct device *d = XDEVICE (XCAR (devcons));
|
|
185
|
1679
|
|
0
|
1680 init_one_device (d);
|
|
|
1681 }
|
|
|
1682 }
|
|
|
1683
|
|
|
1684 void
|
|
|
1685 reinit_initial_console (void)
|
|
|
1686 {
|
|
|
1687 munge_process_groups ();
|
|
|
1688 if (CONSOLEP (Vcontrolling_terminal) &&
|
|
|
1689 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal)))
|
|
|
1690 init_one_console (XCONSOLE (Vcontrolling_terminal));
|
|
|
1691 }
|
|
|
1692
|
|
|
1693
|
|
|
1694 /* ------------------------------------------------------ */
|
|
|
1695 /* Other TTY functions */
|
|
|
1696 /* ------------------------------------------------------ */
|
|
|
1697
|
|
|
1698 #ifdef HAVE_TTY
|
|
|
1699
|
|
|
1700 #if 0 /* not currently used */
|
|
|
1701
|
|
|
1702 /* Return nonzero if safe to use tabs in output.
|
|
|
1703 At the time this is called, init_sys_modes has not been done yet. */
|
|
185
|
1704
|
|
0
|
1705 int
|
|
|
1706 tabs_safe_p (struct device *d)
|
|
|
1707 {
|
|
|
1708 #ifdef HAVE_TTY
|
|
|
1709 if (DEVICE_TTY_P (d))
|
|
|
1710 {
|
|
|
1711 struct emacs_tty tty;
|
|
185
|
1712
|
|
0
|
1713 EMACS_GET_TTY (DEVICE_INFD (d), &tty);
|
|
|
1714 return EMACS_TTY_TABS_OK (&tty);
|
|
|
1715 }
|
|
|
1716 #endif
|
|
|
1717 return 1;
|
|
|
1718 }
|
|
|
1719
|
|
|
1720 #endif /* 0 */
|
|
|
1721
|
|
|
1722 /* Get terminal size from system.
|
|
|
1723 Store number of lines into *heightp and width into *widthp.
|
|
|
1724 If zero or a negative number is stored, the value is not valid. */
|
|
|
1725
|
|
|
1726 void
|
|
|
1727 get_tty_device_size (struct device *d, int *widthp, int *heightp)
|
|
|
1728 {
|
|
|
1729 int input_fd = DEVICE_INFD (d);
|
|
|
1730
|
|
|
1731 assert (DEVICE_TTY_P (d));
|
|
|
1732
|
|
|
1733 #ifdef TIOCGWINSZ
|
|
|
1734 {
|
|
|
1735 /* BSD-style. */
|
|
|
1736 struct winsize size;
|
|
185
|
1737
|
|
0
|
1738 if (ioctl (input_fd, TIOCGWINSZ, &size) == -1)
|
|
|
1739 *widthp = *heightp = 0;
|
|
|
1740 else
|
|
|
1741 {
|
|
|
1742 *widthp = size.ws_col;
|
|
|
1743 *heightp = size.ws_row;
|
|
|
1744 }
|
|
|
1745 }
|
|
209
|
1746 #elif defined TIOCGSIZE
|
|
0
|
1747 {
|
|
|
1748 /* SunOS - style. */
|
|
185
|
1749 struct ttysize size;
|
|
|
1750
|
|
0
|
1751 if (ioctl (input_fd, TIOCGSIZE, &size) == -1)
|
|
|
1752 *widthp = *heightp = 0;
|
|
|
1753 else
|
|
|
1754 {
|
|
|
1755 *widthp = size.ts_cols;
|
|
|
1756 *heightp = size.ts_lines;
|
|
|
1757 }
|
|
|
1758 }
|
|
209
|
1759 #elif defined MSDOS
|
|
0
|
1760 *widthp = FrameCols ();
|
|
|
1761 *heightp = FrameRows ();
|
|
|
1762
|
|
|
1763 #else /* system doesn't know size */
|
|
|
1764
|
|
|
1765 *widthp = 0;
|
|
|
1766 *heightp = 0;
|
|
|
1767
|
|
209
|
1768 #endif /* not !TIOCGWINSZ */
|
|
0
|
1769 }
|
|
|
1770
|
|
|
1771 #endif /* HAVE_TTY */
|
|
|
1772
|
|
|
1773
|
|
|
1774 /* ------------------------------------------------------ */
|
|
|
1775 /* Is device 8 bit ? */
|
|
|
1776 /* ------------------------------------------------------ */
|
|
|
1777
|
|
|
1778 #ifdef HAVE_TTY
|
|
|
1779
|
|
|
1780 int
|
|
|
1781 eight_bit_tty (struct device *d)
|
|
|
1782 {
|
|
|
1783 struct emacs_tty s;
|
|
|
1784 int input_fd;
|
|
|
1785 int eight_bit = 0;
|
|
|
1786
|
|
|
1787 assert (DEVICE_TTY_P (d));
|
|
|
1788 input_fd = DEVICE_INFD (d);
|
|
|
1789
|
|
|
1790 EMACS_GET_TTY (input_fd, &s);
|
|
|
1791
|
|
|
1792 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
|
|
|
1793 eight_bit = (s.main.c_cflag & CSIZE) == CS8;
|
|
|
1794 #else
|
|
|
1795 eight_bit = 0; /* I don't know how to do it */
|
|
|
1796 #endif
|
|
|
1797 return eight_bit;
|
|
|
1798 }
|
|
|
1799
|
|
|
1800 #endif /* HAVE_TTY */
|
|
|
1801
|
|
|
1802
|
|
|
1803 /* ------------------------------------------------------ */
|
|
|
1804 /* Resetting a device */
|
|
|
1805 /* ------------------------------------------------------ */
|
|
|
1806
|
|
|
1807 #ifdef HAVE_TTY
|
|
|
1808
|
|
|
1809 /* Prepare the terminal for exiting Emacs; move the cursor to the
|
|
|
1810 bottom of the frame, turn off interrupt-driven I/O, etc. */
|
|
|
1811 static void
|
|
|
1812 tty_reset_sys_modes_on_device (struct device *d)
|
|
|
1813 {
|
|
|
1814 int input_fd, output_fd;
|
|
|
1815 struct console *con = XCONSOLE (DEVICE_CONSOLE (d));
|
|
|
1816
|
|
|
1817 input_fd = CONSOLE_TTY_DATA (con)->infd;
|
|
|
1818 output_fd = CONSOLE_TTY_DATA (con)->outfd;
|
|
|
1819
|
|
|
1820 #if defined (IBMR2AIX) && defined (AIXHFT)
|
|
|
1821 {
|
|
185
|
1822 /* HFT consoles normally use ^J as a LF/CR. We forced it to
|
|
0
|
1823 do the LF only. Now, we need to reset it. */
|
|
|
1824 struct termio tty;
|
|
185
|
1825
|
|
0
|
1826 if (ioctl (output_fd, HFTGETID, &tty) != -1)
|
|
|
1827 write (output_fd, "\033[20h", 5);
|
|
|
1828 }
|
|
|
1829 #endif
|
|
|
1830
|
|
|
1831 tty_redisplay_shutdown (con);
|
|
|
1832 /* reset_tty_modes() flushes the connection at its end. */
|
|
|
1833 reset_tty_modes (con);
|
|
185
|
1834
|
|
0
|
1835 #if defined (BSD)
|
|
|
1836 /* Avoid possible loss of output when changing terminal modes. */
|
|
|
1837 fsync (output_fd);
|
|
|
1838 #endif
|
|
|
1839
|
|
|
1840 while (EMACS_SET_TTY (input_fd, &CONSOLE_TTY_DATA (con)->old_tty, 0)
|
|
|
1841 < 0 && errno == EINTR)
|
|
|
1842 ;
|
|
185
|
1843
|
|
0
|
1844 #ifdef MSDOS
|
|
|
1845 dos_ttcooked ();
|
|
|
1846 #endif
|
|
185
|
1847
|
|
0
|
1848 #ifdef SET_LINE_DISCIPLINE
|
|
|
1849 /* Ultrix's termios *ignores* any line discipline except TERMIODISC.
|
|
|
1850 A different old line discipline is therefore not restored, yet.
|
|
|
1851 Restore the old line discipline by hand. */
|
|
|
1852 ioctl (input_fd, TIOCSETD, &old_tty.main.c_line);
|
|
|
1853 #endif
|
|
|
1854
|
|
|
1855 #ifdef AIXHFT
|
|
|
1856 hft_reset (con);
|
|
|
1857 #endif
|
|
|
1858
|
|
|
1859 }
|
|
|
1860
|
|
|
1861 #endif /* HAVE_TTY */
|
|
|
1862
|
|
|
1863 void
|
|
|
1864 reset_one_device (struct device *d)
|
|
|
1865 {
|
|
|
1866 #ifdef HAVE_TTY
|
|
|
1867 if (DEVICE_TTY_P (d))
|
|
|
1868 tty_reset_sys_modes_on_device (d);
|
|
|
1869 else
|
|
|
1870 #endif
|
|
|
1871 if (DEVICE_STREAM_P (d))
|
|
|
1872 fflush (CONSOLE_STREAM_DATA (XCONSOLE (DEVICE_CONSOLE (d)))->outfd);
|
|
|
1873 #ifdef SIGIO
|
|
|
1874 if (!DEVICE_STREAM_P (d))
|
|
|
1875 {
|
|
|
1876 unrequest_sigio_on_device (d);
|
|
|
1877 reset_sigio_on_device (d);
|
|
|
1878 }
|
|
|
1879 #endif
|
|
|
1880 }
|
|
|
1881
|
|
|
1882 void
|
|
|
1883 reset_one_console (struct console *con)
|
|
|
1884 {
|
|
|
1885 /* Note: this can be called during GC. */
|
|
|
1886 Lisp_Object devcons;
|
|
|
1887
|
|
|
1888 CONSOLE_DEVICE_LOOP (devcons, con)
|
|
|
1889 {
|
|
|
1890 struct device *d = XDEVICE (XCAR (devcons));
|
|
185
|
1891
|
|
0
|
1892 reset_one_device (d);
|
|
|
1893 }
|
|
|
1894 }
|
|
|
1895
|
|
|
1896 void
|
|
|
1897 reset_all_consoles (void)
|
|
|
1898 {
|
|
|
1899 /* Note: this can be called during GC. */
|
|
|
1900 Lisp_Object concons;
|
|
|
1901
|
|
|
1902 CONSOLE_LOOP (concons)
|
|
|
1903 {
|
|
|
1904 struct console *con = XCONSOLE (XCAR (concons));
|
|
185
|
1905
|
|
0
|
1906 reset_one_console (con);
|
|
|
1907 }
|
|
|
1908
|
|
|
1909 unmunge_process_groups ();
|
|
|
1910 }
|
|
|
1911
|
|
|
1912 void
|
|
|
1913 reset_initial_console (void)
|
|
|
1914 {
|
|
|
1915 if (CONSOLEP (Vcontrolling_terminal) &&
|
|
|
1916 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal)))
|
|
|
1917 reset_one_console (XCONSOLE (Vcontrolling_terminal));
|
|
|
1918 unmunge_process_groups ();
|
|
|
1919 }
|
|
|
1920
|
|
|
1921
|
|
|
1922 /* ------------------------------------------------------ */
|
|
|
1923 /* extra TTY stuff under AIX */
|
|
|
1924 /* ------------------------------------------------------ */
|
|
|
1925
|
|
|
1926 #ifdef AIXHFT
|
|
|
1927
|
|
|
1928 /* Called from init_sys_modes. */
|
|
|
1929 static void
|
|
|
1930 hft_init (struct console *con)
|
|
|
1931 {
|
|
|
1932 int junk;
|
|
|
1933 int input_fd;
|
|
|
1934
|
|
|
1935 assert (CONSOLE_TTY_P (con));
|
|
|
1936 input_fd = CONSOLE_TTY_DATA (con)->infd;
|
|
|
1937
|
|
|
1938 /* If we're not on an HFT we shouldn't do any of this. We determine
|
|
|
1939 if we are on an HFT by trying to get an HFT error code. If this
|
|
185
|
1940 call fails, we're not on an HFT. */
|
|
0
|
1941 #ifdef IBMR2AIX
|
|
|
1942 if (ioctl (input_fd, HFQERROR, &junk) < 0)
|
|
|
1943 return;
|
|
|
1944 #else /* not IBMR2AIX */
|
|
|
1945 if (ioctl (input_fd, HFQEIO, 0) < 0)
|
|
|
1946 return;
|
|
|
1947 #endif /* not IBMR2AIX */
|
|
|
1948
|
|
|
1949 /* On AIX the default hft keyboard mapping uses backspace rather than delete
|
|
|
1950 as the rubout key's ASCII code. Here this is changed. The bug is that
|
|
|
1951 there's no way to determine the old mapping, so in reset_one_console
|
|
|
1952 we need to assume that the normal map had been present. Of course, this
|
|
|
1953 code also doesn't help if on a terminal emulator which doesn't understand
|
|
|
1954 HFT VTD's. */
|
|
|
1955 {
|
|
|
1956 struct hfbuf buf;
|
|
|
1957 struct hfkeymap keymap;
|
|
|
1958
|
|
|
1959 buf.hf_bufp = (char *)&keymap;
|
|
|
1960 buf.hf_buflen = sizeof (keymap);
|
|
|
1961 keymap.hf_nkeys = 2;
|
|
|
1962 keymap.hfkey[0].hf_kpos = 15;
|
|
|
1963 keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE;
|
|
|
1964 #ifdef IBMR2AIX
|
|
|
1965 keymap.hfkey[0].hf_keyidh = '<';
|
|
|
1966 #else /* not IBMR2AIX */
|
|
|
1967 keymap.hfkey[0].hf_page = '<';
|
|
|
1968 #endif /* not IBMR2AIX */
|
|
|
1969 keymap.hfkey[0].hf_char = 127;
|
|
|
1970 keymap.hfkey[1].hf_kpos = 15;
|
|
|
1971 keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT;
|
|
|
1972 #ifdef IBMR2AIX
|
|
|
1973 keymap.hfkey[1].hf_keyidh = '<';
|
|
|
1974 #else /* not IBMR2AIX */
|
|
|
1975 keymap.hfkey[1].hf_page = '<';
|
|
|
1976 #endif /* not IBMR2AIX */
|
|
|
1977 keymap.hfkey[1].hf_char = 127;
|
|
|
1978 hftctl (input_fd, HFSKBD, &buf);
|
|
|
1979 }
|
|
|
1980 /* #### Should probably set a console TTY flag here. */
|
|
|
1981 #if 0
|
|
|
1982 /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly
|
|
|
1983 at times. */
|
|
|
1984 line_ins_del_ok = char_ins_del_ok = 0;
|
|
|
1985 #endif /* 0 */
|
|
|
1986 }
|
|
|
1987
|
|
|
1988 /* Reset the rubout key to backspace. */
|
|
|
1989
|
|
|
1990 static void
|
|
|
1991 hft_reset (struct console *con)
|
|
|
1992 {
|
|
|
1993 struct hfbuf buf;
|
|
|
1994 struct hfkeymap keymap;
|
|
|
1995 int junk;
|
|
|
1996 int input_fd;
|
|
|
1997
|
|
|
1998 assert (CONSOLE_TTY_P (con));
|
|
|
1999 input_fd = CONSOLE_TTY_DATA (con)->infd;
|
|
|
2000
|
|
|
2001 #ifdef IBMR2AIX
|
|
|
2002 if (ioctl (input_fd, HFQERROR, &junk) < 0)
|
|
|
2003 return;
|
|
|
2004 #else /* not IBMR2AIX */
|
|
|
2005 if (ioctl (input_fd, HFQEIO, 0) < 0)
|
|
|
2006 return;
|
|
|
2007 #endif /* not IBMR2AIX */
|
|
|
2008
|
|
|
2009 buf.hf_bufp = (char *)&keymap;
|
|
|
2010 buf.hf_buflen = sizeof (keymap);
|
|
|
2011 keymap.hf_nkeys = 2;
|
|
|
2012 keymap.hfkey[0].hf_kpos = 15;
|
|
|
2013 keymap.hfkey[0].hf_kstate = HFMAPCHAR | HFSHFNONE;
|
|
|
2014 #ifdef IBMR2AIX
|
|
|
2015 keymap.hfkey[0].hf_keyidh = '<';
|
|
|
2016 #else /* not IBMR2AIX */
|
|
|
2017 keymap.hfkey[0].hf_page = '<';
|
|
|
2018 #endif /* not IBMR2AIX */
|
|
|
2019 keymap.hfkey[0].hf_char = 8;
|
|
|
2020 keymap.hfkey[1].hf_kpos = 15;
|
|
|
2021 keymap.hfkey[1].hf_kstate = HFMAPCHAR | HFSHFSHFT;
|
|
|
2022 #ifdef IBMR2AIX
|
|
|
2023 keymap.hfkey[1].hf_keyidh = '<';
|
|
|
2024 #else /* not IBMR2AIX */
|
|
|
2025 keymap.hfkey[1].hf_page = '<';
|
|
|
2026 #endif /* not IBMR2AIX */
|
|
|
2027 keymap.hfkey[1].hf_char = 8;
|
|
|
2028 hftctl (input_fd, HFSKBD, &buf);
|
|
|
2029 }
|
|
|
2030
|
|
|
2031 #endif /* AIXHFT */
|
|
|
2032
|
|
|
2033
|
|
|
2034 /************************************************************************/
|
|
|
2035 /* limits of text/data segments */
|
|
|
2036 /************************************************************************/
|
|
|
2037
|
|
|
2038 /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */
|
|
|
2039 #ifndef CANNOT_DUMP
|
|
|
2040 #define NEED_STARTS
|
|
|
2041 #endif
|
|
|
2042
|
|
|
2043 #ifndef SYSTEM_MALLOC
|
|
|
2044 #ifndef NEED_STARTS
|
|
|
2045 #define NEED_STARTS
|
|
|
2046 #endif
|
|
|
2047 #endif
|
|
|
2048
|
|
|
2049 #ifdef NEED_STARTS
|
|
|
2050 /* Some systems that cannot dump also cannot implement these. */
|
|
|
2051
|
|
|
2052 /*
|
|
|
2053 * Return the address of the start of the text segment prior to
|
|
|
2054 * doing an unexec. After unexec the return value is undefined.
|
|
|
2055 * See crt0.c for further explanation and _start.
|
|
|
2056 *
|
|
|
2057 */
|
|
|
2058
|
|
185
|
2059 #ifdef __cplusplus
|
|
|
2060 extern "C" int _start ();
|
|
|
2061 #else
|
|
|
2062 extern int _start ();
|
|
|
2063 #endif
|
|
|
2064
|
|
0
|
2065 #ifndef HAVE_TEXT_START
|
|
|
2066 char *
|
|
|
2067 start_of_text (void)
|
|
|
2068 {
|
|
|
2069 #ifdef TEXT_START
|
|
|
2070 return ((char *) TEXT_START);
|
|
|
2071 #else
|
|
|
2072 #ifdef GOULD
|
|
|
2073 extern csrt ();
|
|
|
2074 return ((char *) csrt);
|
|
|
2075 #else /* not GOULD */
|
|
|
2076 return ((char *) _start);
|
|
|
2077 #endif /* GOULD */
|
|
|
2078 #endif /* TEXT_START */
|
|
|
2079 }
|
|
|
2080 #endif /* not HAVE_TEXT_START */
|
|
|
2081
|
|
|
2082 /*
|
|
|
2083 * Return the address of the start of the data segment prior to
|
|
|
2084 * doing an unexec. After unexec the return value is undefined.
|
|
|
2085 * See crt0.c for further information and definition of data_start.
|
|
|
2086 *
|
|
|
2087 * Apparently, on BSD systems this is etext at startup. On
|
|
|
2088 * USG systems (swapping) this is highly mmu dependent and
|
|
|
2089 * is also dependent on whether or not the program is running
|
|
|
2090 * with shared text. Generally there is a (possibly large)
|
|
|
2091 * gap between end of text and start of data with shared text.
|
|
|
2092 *
|
|
|
2093 * On Uniplus+ systems with shared text, data starts at a
|
|
|
2094 * fixed address. Each port (from a given oem) is generally
|
|
|
2095 * different, and the specific value of the start of data can
|
|
|
2096 * be obtained via the UniPlus+ specific "uvar" system call,
|
|
|
2097 * however the method outlined in crt0.c seems to be more portable.
|
|
|
2098 *
|
|
|
2099 * Probably what will have to happen when a USG unexec is available,
|
|
|
2100 * at least on UniPlus, is temacs will have to be made unshared so
|
|
|
2101 * that text and data are contiguous. Then once loadup is complete,
|
|
|
2102 * unexec will produce a shared executable where the data can be
|
|
|
2103 * at the normal shared text boundry and the startofdata variable
|
|
|
2104 * will be patched by unexec to the correct value.
|
|
|
2105 *
|
|
|
2106 */
|
|
185
|
2107
|
|
0
|
2108 void *
|
|
|
2109 start_of_data (void)
|
|
|
2110 {
|
|
|
2111 #ifdef DATA_START
|
|
|
2112 return ((char *) DATA_START);
|
|
|
2113 #else
|
|
|
2114 #ifdef ORDINARY_LINK
|
|
|
2115 /*
|
|
|
2116 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
|
|
|
2117 * data_start isn't defined. We take the address of environ, which
|
|
|
2118 * is known to live at or near the start of the system crt0.c, and
|
|
|
2119 * we don't sweat the handful of bytes that might lose.
|
|
|
2120 */
|
|
|
2121 extern char **environ;
|
|
|
2122
|
|
|
2123 return((char *) &environ);
|
|
|
2124 #else
|
|
|
2125 extern int data_start;
|
|
|
2126 return ((char *) &data_start);
|
|
|
2127 #endif /* ORDINARY_LINK */
|
|
|
2128 #endif /* DATA_START */
|
|
|
2129 }
|
|
|
2130 #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
|
|
|
2131
|
|
|
2132 #ifndef CANNOT_DUMP
|
|
|
2133 /* Some systems that cannot dump also cannot implement these. */
|
|
|
2134
|
|
|
2135 /*
|
|
|
2136 * Return the address of the end of the text segment prior to
|
|
|
2137 * doing an unexec. After unexec the return value is undefined.
|
|
|
2138 */
|
|
185
|
2139
|
|
0
|
2140 char *
|
|
|
2141 end_of_text (void)
|
|
|
2142 {
|
|
|
2143 #ifdef TEXT_END
|
|
|
2144 return ((char *) TEXT_END);
|
|
|
2145 #else
|
|
|
2146 extern int etext;
|
|
|
2147 return ((char *) &etext);
|
|
|
2148 #endif
|
|
|
2149 }
|
|
185
|
2150
|
|
0
|
2151 /*
|
|
|
2152 * Return the address of the end of the data segment prior to
|
|
|
2153 * doing an unexec. After unexec the return value is undefined.
|
|
|
2154 */
|
|
|
2155
|
|
|
2156 char *
|
|
|
2157 end_of_data (void)
|
|
|
2158 {
|
|
|
2159 #ifdef DATA_END
|
|
|
2160 return ((char *) DATA_END);
|
|
|
2161 #else
|
|
|
2162 extern int edata;
|
|
|
2163 return ((char *) &edata);
|
|
|
2164 #endif
|
|
|
2165 }
|
|
|
2166
|
|
|
2167 #endif /* not CANNOT_DUMP */
|
|
|
2168
|
|
|
2169
|
|
|
2170 /************************************************************************/
|
|
|
2171 /* get the system name */
|
|
|
2172 /************************************************************************/
|
|
|
2173
|
|
|
2174 /* init_system_name sets up the string for the Lisp function
|
|
|
2175 system-name to return. */
|
|
|
2176
|
|
|
2177 extern Lisp_Object Vsystem_name;
|
|
|
2178
|
|
209
|
2179 #ifdef HAVE_SOCKETS
|
|
0
|
2180 # include <sys/socket.h>
|
|
|
2181 # include <netdb.h>
|
|
209
|
2182 #endif /* HAVE_SOCKETS */
|
|
0
|
2183
|
|
|
2184 void
|
|
|
2185 init_system_name (void)
|
|
|
2186 {
|
|
209
|
2187 #ifndef HAVE_GETHOSTNAME
|
|
0
|
2188 struct utsname uts;
|
|
|
2189 uname (&uts);
|
|
|
2190 Vsystem_name = build_string (uts.nodename);
|
|
|
2191 #else /* HAVE_GETHOSTNAME */
|
|
|
2192 unsigned int hostname_size = 256;
|
|
|
2193 char *hostname = (char *) alloca (hostname_size);
|
|
|
2194
|
|
|
2195 /* Try to get the host name; if the buffer is too short, try
|
|
|
2196 again. Apparently, the only indication gethostname gives of
|
|
|
2197 whether the buffer was large enough is the presence or absence
|
|
|
2198 of a '\0' in the string. Eech. */
|
|
|
2199 for (;;)
|
|
|
2200 {
|
|
|
2201 gethostname (hostname, hostname_size - 1);
|
|
|
2202 hostname[hostname_size - 1] = '\0';
|
|
|
2203
|
|
|
2204 /* Was the buffer large enough for the '\0'? */
|
|
|
2205 if (strlen (hostname) < (size_t) (hostname_size - 1))
|
|
|
2206 break;
|
|
|
2207
|
|
|
2208 hostname_size <<= 1;
|
|
|
2209 hostname = (char *) alloca (hostname_size);
|
|
|
2210 }
|
|
231
|
2211 # if defined( HAVE_SOCKETS) && !defined(__CYGWIN32__)
|
|
0
|
2212 /* Turn the hostname into the official, fully-qualified hostname.
|
|
|
2213 Don't do this if we're going to dump; this can confuse system
|
|
|
2214 libraries on some machines and make the dumped emacs core dump. */
|
|
|
2215 # ifndef CANNOT_DUMP
|
|
|
2216 if (initialized)
|
|
|
2217 # endif /* not CANNOT_DUMP */
|
|
|
2218 {
|
|
|
2219 struct hostent *hp;
|
|
|
2220 int count;
|
|
|
2221 # ifdef TRY_AGAIN
|
|
|
2222 for (count = 0; count < 10; count++)
|
|
|
2223 {
|
|
|
2224 h_errno = 0;
|
|
|
2225 # endif
|
|
|
2226 /* Some systems can't handle SIGALARM/SIGIO in gethostbyname(). */
|
|
|
2227 stop_interrupts ();
|
|
|
2228 hp = gethostbyname (hostname);
|
|
|
2229 start_interrupts ();
|
|
|
2230 # ifdef TRY_AGAIN
|
|
|
2231 if (! (hp == 0 && h_errno == TRY_AGAIN))
|
|
|
2232 break;
|
|
|
2233 Fsleep_for (make_int (1));
|
|
|
2234 }
|
|
|
2235 # endif
|
|
|
2236 if (hp)
|
|
|
2237 {
|
|
|
2238 CONST char *fqdn = (CONST char *) hp->h_name;
|
|
|
2239
|
|
|
2240 if (!strchr (fqdn, '.'))
|
|
|
2241 {
|
|
|
2242 /* We still don't have a fully qualified domain name.
|
|
|
2243 Try to find one in the list of alternate names */
|
|
|
2244 char **alias = hp->h_aliases;
|
|
|
2245 while (*alias && !strchr (*alias, '.'))
|
|
|
2246 alias++;
|
|
|
2247 if (*alias)
|
|
|
2248 fqdn = *alias;
|
|
|
2249 }
|
|
|
2250 hostname = (char *) alloca (strlen (fqdn) + 1);
|
|
|
2251 strcpy (hostname, fqdn);
|
|
|
2252 }
|
|
|
2253 }
|
|
|
2254 # endif /* HAVE_SOCKETS */
|
|
|
2255 Vsystem_name = build_string (hostname);
|
|
209
|
2256 #endif /* HAVE_GETHOSTNAME */
|
|
0
|
2257 {
|
|
|
2258 Bufbyte *p;
|
|
|
2259 Bytecount i;
|
|
|
2260
|
|
16
|
2261 for (i = 0, p = XSTRING_DATA (Vsystem_name);
|
|
|
2262 i < XSTRING_LENGTH (Vsystem_name);
|
|
0
|
2263 i++, p++)
|
|
|
2264 {
|
|
|
2265 if (*p == ' ' || *p == '\t')
|
|
|
2266 *p = '-';
|
|
|
2267 }
|
|
|
2268 }
|
|
|
2269 }
|
|
|
2270
|
|
|
2271
|
|
|
2272 /************************************************************************/
|
|
|
2273 /* Emulation of select() */
|
|
|
2274 /************************************************************************/
|
|
|
2275
|
|
|
2276 #ifndef HAVE_SELECT
|
|
|
2277
|
|
|
2278 ERROR: XEmacs requires a working select().
|
|
|
2279
|
|
|
2280 #endif /* not HAVE_SELECT */
|
|
|
2281
|
|
|
2282
|
|
|
2283 /************************************************************************/
|
|
|
2284 /* Emulation of signal stuff */
|
|
|
2285 /************************************************************************/
|
|
|
2286
|
|
|
2287 /* BSD 4.1 crap deleted. 4.2 was released in 1983, for God's sake! I
|
|
|
2288 can't imagine that anyone is actually running that OS any more.
|
|
|
2289 You can't use X under it (I think) because there's no select().
|
|
|
2290 Anyway, the signal stuff has all been changed. If someone wants to
|
|
|
2291 get this stuff working again, look in the FSF Emacs sources. */
|
|
185
|
2292
|
|
0
|
2293 /* POSIX signals support - DJB */
|
|
|
2294
|
|
|
2295 #ifdef HAVE_SIGPROCMASK
|
|
|
2296
|
|
|
2297 /* #### Is there any reason this is static global rather than local? */
|
|
|
2298 static struct sigaction new_action, old_action;
|
|
|
2299
|
|
|
2300 signal_handler_t
|
|
|
2301 sys_do_signal (int signal_number, signal_handler_t action)
|
|
|
2302 {
|
|
|
2303 #if 0
|
|
|
2304
|
|
|
2305 /* XEmacs works better if system calls are *not* restarted.
|
|
|
2306 This allows C-g to interrupt reads and writes, on most systems.
|
|
|
2307
|
|
|
2308 #### Another possibility is to just longjmp() out of the signal
|
|
|
2309 handler. According to W.R. Stevens, this should be OK on all
|
|
|
2310 systems. However, I don't want to deal with the potential
|
|
|
2311 evil ramifications of this at this point. */
|
|
|
2312
|
|
|
2313 #ifdef DGUX
|
|
|
2314 /* This gets us restartable system calls for efficiency.
|
|
|
2315 The "else" code will work as well. */
|
|
|
2316 return (berk_signal (signal_number, action));
|
|
|
2317 #else
|
|
|
2318 sigemptyset (&new_action.sa_mask);
|
|
|
2319 new_action.sa_handler = action;
|
|
|
2320 #if defined (SA_RESTART)
|
|
|
2321 /* Emacs mostly works better with restartable system services. If this
|
|
|
2322 * flag exists, we probably want to turn it on here.
|
|
|
2323 */
|
|
|
2324 new_action.sa_flags = SA_RESTART;
|
|
|
2325 #else
|
|
|
2326 new_action.sa_flags = 0;
|
|
|
2327 #endif
|
|
|
2328 sigaction (signal_number, &new_action, &old_action);
|
|
|
2329 return (old_action.sa_handler);
|
|
|
2330 #endif /* DGUX */
|
|
|
2331
|
|
|
2332 #else /* not 0 */
|
|
|
2333
|
|
|
2334 sigemptyset (&new_action.sa_mask);
|
|
|
2335 new_action.sa_handler = action;
|
|
|
2336 #if defined (SA_INTERRUPT) /* don't restart system calls, under SunOS */
|
|
|
2337 new_action.sa_flags = SA_INTERRUPT;
|
|
|
2338 #else
|
|
|
2339 new_action.sa_flags = 0;
|
|
|
2340 #endif
|
|
|
2341 sigaction (signal_number, &new_action, &old_action);
|
|
179
|
2342 return (signal_handler_t) (old_action.sa_handler);
|
|
0
|
2343
|
|
|
2344 #endif /* not 0 */
|
|
|
2345 }
|
|
|
2346
|
|
|
2347 #elif defined (HAVE_SIGBLOCK)
|
|
|
2348
|
|
|
2349 /* We use sigvec() rather than signal() if we have it, because
|
|
|
2350 it lets us specify interruptible system calls. */
|
|
|
2351 signal_handler_t
|
|
|
2352 sys_do_signal (int signal_number, signal_handler_t action)
|
|
|
2353 {
|
|
|
2354 struct sigvec vec, ovec;
|
|
|
2355
|
|
|
2356 vec.sv_handler = action;
|
|
|
2357 vec.sv_mask = 0;
|
|
|
2358 #ifdef SV_INTERRUPT /* don't restart system calls */
|
|
|
2359 vec.sv_flags = SV_INTERRUPT;
|
|
|
2360 #else
|
|
|
2361 vec.sv_flags = 0;
|
|
|
2362 #endif
|
|
|
2363
|
|
|
2364 sigvec (signal_number, &vec, &ovec);
|
|
|
2365
|
|
|
2366 return (ovec.sv_handler);
|
|
|
2367 }
|
|
|
2368
|
|
|
2369 #endif /* HAVE_SIGBLOCK (HAVE_SIGPROCMASK) */
|
|
|
2370
|
|
|
2371
|
|
|
2372 /************************************************************************/
|
|
|
2373 /* Emulation of strerror() */
|
|
|
2374 /************************************************************************/
|
|
|
2375
|
|
|
2376 #ifndef HAVE_STRERROR
|
|
|
2377
|
|
|
2378 #if !defined(NeXT) && !defined(__alpha) && !defined(MACH) && !defined(LINUX) && !defined(IRIX) && !defined(__NetBSD__)
|
|
|
2379 /* Linux added here by Raymond L. Toy <toy@alydar.crd.ge.com> for XEmacs. */
|
|
|
2380 /* Irix added here by gparker@sni-usa.com for XEmacs. */
|
|
|
2381 /* NetBSD added here by James R Grinter <jrg@doc.ic.ac.uk> for XEmacs */
|
|
|
2382 extern CONST char *sys_errlist[];
|
|
|
2383 extern int sys_nerr;
|
|
|
2384 #endif
|
|
|
2385
|
|
|
2386 #ifdef __NetBSD__
|
|
|
2387 extern char *sys_errlist[];
|
|
|
2388 extern int sys_nerr;
|
|
|
2389 #endif
|
|
|
2390
|
|
|
2391
|
|
|
2392 CONST char *
|
|
|
2393 strerror (int errnum)
|
|
|
2394 {
|
|
|
2395 if (errnum >= 0 && errnum < sys_nerr)
|
|
|
2396 return sys_errlist[errnum];
|
|
|
2397 return ((CONST char *) GETTEXT ("Unknown error"));
|
|
|
2398 }
|
|
|
2399
|
|
|
2400 #endif /* ! HAVE_STRERROR */
|
|
|
2401
|
|
|
2402
|
|
|
2403
|
|
|
2404 /************************************************************************/
|
|
|
2405 /* Encapsulations of system calls */
|
|
|
2406 /************************************************************************/
|
|
|
2407
|
|
|
2408 #define PATHNAME_CONVERT_OUT(path) \
|
|
|
2409 GET_C_CHARPTR_EXT_FILENAME_DATA_ALLOCA (path, path)
|
|
|
2410
|
|
|
2411 /***** MSDOS versions are in msdos.c *****/
|
|
|
2412
|
|
|
2413 /***************** low-level calls ****************/
|
|
|
2414
|
|
|
2415 /*
|
|
|
2416 * On USG systems the system calls are INTERRUPTIBLE by signals
|
|
|
2417 * that the user program has elected to catch. Thus the system call
|
|
|
2418 * must be retried in these cases. To handle this without massive
|
|
|
2419 * changes in the source code, we remap the standard system call names
|
|
|
2420 * to names for our own functions in sysdep.c that do the system call
|
|
|
2421 * with retries. Actually, for portability reasons, it is good
|
|
|
2422 * programming practice, as this example shows, to limit all actual
|
|
|
2423 * system calls to a single occurrence in the source. Sure, this
|
|
|
2424 * adds an extra level of function call overhead but it is almost
|
|
|
2425 * always negligible. Fred Fish, Unisoft Systems Inc.
|
|
|
2426 */
|
|
|
2427
|
|
|
2428 /* Ben sez: read Dick Gabriel's essay about the Worse Is Better
|
|
|
2429 approach to programming and its connection to the silly
|
|
|
2430 interruptible-system-call business. To find it, look at
|
|
|
2431 Jamie's home page (http://www.netscape.com/people/jwz). */
|
|
|
2432
|
|
|
2433 #ifdef ENCAPSULATE_OPEN
|
|
|
2434 int
|
|
|
2435 sys_open (CONST char *path, int oflag, ...)
|
|
|
2436 {
|
|
|
2437 int mode;
|
|
|
2438 va_list ap;
|
|
185
|
2439
|
|
0
|
2440 va_start (ap, oflag);
|
|
|
2441 mode = va_arg (ap, int);
|
|
|
2442 va_end (ap);
|
|
|
2443
|
|
|
2444 PATHNAME_CONVERT_OUT (path);
|
|
|
2445 #ifdef INTERRUPTIBLE_OPEN
|
|
|
2446 {
|
|
|
2447 int rtnval;
|
|
|
2448 while ((rtnval = open (path, oflag, mode)) == -1
|
|
|
2449 && (errno == EINTR));
|
|
|
2450 return rtnval;
|
|
|
2451 }
|
|
|
2452 #else
|
|
|
2453 return open (path, oflag, mode);
|
|
|
2454 #endif
|
|
|
2455 }
|
|
|
2456 #endif /* ENCAPSULATE_OPEN */
|
|
|
2457
|
|
225
|
2458 /* Like sys_open, only when open() is interrupted by EINTR, check for
|
|
|
2459 QUIT. This allows the callers of this function to be interrupted
|
|
|
2460 with C-g when, say, reading from named pipes. However, this should
|
|
|
2461 be used with caution, as it can GC.
|
|
|
2462
|
|
|
2463 This function will not function as expected on systems where open()
|
|
|
2464 is not interrupted by C-g. However, the worst that can happen is
|
|
|
2465 the fallback to simple open(). */
|
|
|
2466 int
|
|
|
2467 interruptible_open (CONST char *path, int oflag, int mode)
|
|
|
2468 {
|
|
|
2469 /* This function can GC */
|
|
|
2470 size_t len = strlen (path);
|
|
|
2471 char *nonreloc = (char *) alloca (len + 1);
|
|
|
2472
|
|
|
2473 /* Must copy PATH, because it might be the data of a Lisp_String,
|
|
|
2474 which could be relocated by GC when checking for QUIT. */
|
|
|
2475 memcpy (nonreloc, path, len + 1);
|
|
|
2476
|
|
|
2477 /* The same as PATHNAME_CONVERT_OUT in sysdep.c. */
|
|
|
2478 GET_C_CHARPTR_EXT_FILENAME_DATA_ALLOCA (nonreloc, nonreloc);
|
|
|
2479
|
|
|
2480 for (;;)
|
|
|
2481 {
|
|
|
2482 int rtnval = open (nonreloc, oflag, mode);
|
|
|
2483 if (!(rtnval == -1 && errno == EINTR))
|
|
|
2484 return rtnval;
|
|
|
2485 /* open() was interrupted. Was QUIT responsible? */
|
|
|
2486 QUIT;
|
|
|
2487 }
|
|
|
2488 }
|
|
16
|
2489
|
|
0
|
2490 #ifdef ENCAPSULATE_CLOSE
|
|
|
2491 int
|
|
|
2492 sys_close (int fd)
|
|
|
2493 {
|
|
|
2494 #ifdef INTERRUPTIBLE_CLOSE
|
|
|
2495 int did_retry = 0;
|
|
203
|
2496 REGISTER int rtnval;
|
|
0
|
2497
|
|
|
2498 while ((rtnval = close (fd)) == -1
|
|
|
2499 && (errno == EINTR))
|
|
|
2500 did_retry = 1;
|
|
|
2501
|
|
|
2502 /* If close is interrupted SunOS 4.1 may or may not have closed the
|
|
|
2503 file descriptor. If it did the second close will fail with
|
|
|
2504 errno = EBADF. That means we have succeeded. */
|
|
|
2505 if (rtnval == -1 && did_retry && errno == EBADF)
|
|
|
2506 return 0;
|
|
|
2507
|
|
|
2508 return rtnval;
|
|
|
2509 #else
|
|
|
2510 return close (fd);
|
|
|
2511 #endif
|
|
|
2512 }
|
|
|
2513 #endif /* ENCAPSULATE_CLOSE */
|
|
|
2514
|
|
|
2515 int
|
|
|
2516 sys_read_1 (int fildes, void *buf, unsigned int nbyte, int allow_quit)
|
|
|
2517 {
|
|
|
2518 int rtnval;
|
|
|
2519
|
|
|
2520 /* No harm in looping regardless of the INTERRUPTIBLE_IO setting. */
|
|
|
2521 while ((rtnval = read (fildes, buf, nbyte)) == -1
|
|
|
2522 && (errno == EINTR))
|
|
|
2523 {
|
|
|
2524 if (allow_quit)
|
|
|
2525 REALLY_QUIT;
|
|
|
2526 }
|
|
|
2527 return rtnval;
|
|
|
2528 }
|
|
|
2529
|
|
|
2530 #ifdef ENCAPSULATE_READ
|
|
|
2531 int
|
|
|
2532 sys_read (int fildes, void *buf, unsigned int nbyte)
|
|
|
2533 {
|
|
|
2534 return sys_read_1 (fildes, buf, nbyte, 0);
|
|
|
2535 }
|
|
|
2536 #endif /* ENCAPSULATE_READ */
|
|
|
2537
|
|
|
2538 int
|
|
|
2539 sys_write_1 (int fildes, CONST void *buf, unsigned int nbyte, int allow_quit)
|
|
|
2540 {
|
|
|
2541 int rtnval;
|
|
|
2542 int bytes_written = 0;
|
|
185
|
2543 CONST char *b = (CONST char *) buf;
|
|
0
|
2544
|
|
|
2545 /* No harm in looping regardless of the INTERRUPTIBLE_IO setting. */
|
|
|
2546 while (nbyte > 0)
|
|
|
2547 {
|
|
|
2548 rtnval = write (fildes, b, nbyte);
|
|
|
2549
|
|
|
2550 if (allow_quit)
|
|
|
2551 REALLY_QUIT;
|
|
|
2552
|
|
|
2553 if (rtnval == -1)
|
|
|
2554 {
|
|
|
2555 if (errno == EINTR)
|
|
|
2556 continue;
|
|
|
2557 else
|
|
|
2558 return (bytes_written ? bytes_written : -1);
|
|
|
2559 }
|
|
|
2560 b += rtnval;
|
|
|
2561 nbyte -= rtnval;
|
|
|
2562 bytes_written += rtnval;
|
|
|
2563 }
|
|
|
2564 return (bytes_written);
|
|
|
2565 }
|
|
|
2566
|
|
|
2567 #ifdef ENCAPSULATE_WRITE
|
|
|
2568 int
|
|
|
2569 sys_write (int fildes, CONST void *buf, unsigned int nbyte)
|
|
|
2570 {
|
|
|
2571 return sys_write_1 (fildes, buf, nbyte, 0);
|
|
|
2572 }
|
|
|
2573 #endif /* ENCAPSULATE_WRITE */
|
|
|
2574
|
|
|
2575
|
|
|
2576 /**************** stdio calls ****************/
|
|
|
2577
|
|
|
2578 /* There is at least some evidence that the stdio calls are interruptible
|
|
|
2579 just like the normal system calls, at least on some systems. In any
|
|
|
2580 case, it doesn't hurt to encapsulate them. */
|
|
|
2581
|
|
|
2582 /* #### Should also encapsulate fflush().
|
|
|
2583 #### Should conceivably encapsulate getchar() etc. What a pain! */
|
|
|
2584
|
|
|
2585 #ifdef ENCAPSULATE_FOPEN
|
|
|
2586 FILE *
|
|
|
2587 sys_fopen (CONST char *path, CONST char *type)
|
|
|
2588 {
|
|
|
2589 PATHNAME_CONVERT_OUT (path);
|
|
|
2590 #ifdef INTERRUPTIBLE_OPEN
|
|
|
2591 {
|
|
|
2592 FILE *rtnval;
|
|
|
2593 while (!(rtnval = fopen (path, type)) && (errno == EINTR));
|
|
|
2594 return rtnval;
|
|
|
2595 }
|
|
|
2596 #else
|
|
|
2597 return fopen (path, type);
|
|
|
2598 #endif
|
|
|
2599 }
|
|
|
2600 #endif /* ENCAPSULATE_FOPEN */
|
|
|
2601
|
|
16
|
2602
|
|
0
|
2603 #ifdef ENCAPSULATE_FCLOSE
|
|
|
2604 int
|
|
|
2605 sys_fclose (FILE *stream)
|
|
|
2606 {
|
|
|
2607 #ifdef INTERRUPTIBLE_CLOSE
|
|
|
2608 int rtnval;
|
|
|
2609
|
|
|
2610 while ((rtnval = fclose (stream)) == EOF
|
|
|
2611 && (errno == EINTR))
|
|
|
2612 ;
|
|
|
2613 return rtnval;
|
|
|
2614 #else
|
|
|
2615 return fclose (stream);
|
|
|
2616 #endif
|
|
|
2617 }
|
|
|
2618 #endif /* ENCAPSULATE_FCLOSE */
|
|
|
2619
|
|
16
|
2620
|
|
0
|
2621 #ifdef ENCAPSULATE_FREAD
|
|
|
2622 size_t
|
|
|
2623 sys_fread (void *ptr, size_t size, size_t nitem, FILE *stream)
|
|
|
2624 {
|
|
|
2625 #ifdef INTERRUPTIBLE_IO
|
|
|
2626 size_t rtnval;
|
|
|
2627 size_t items_read = 0;
|
|
|
2628 char *b = (char *) ptr;
|
|
|
2629
|
|
|
2630 while (nitem > 0)
|
|
|
2631 {
|
|
|
2632 rtnval = fread (b, size, nitem, stream);
|
|
|
2633 if (rtnval == 0)
|
|
|
2634 {
|
|
|
2635 if (ferror (stream) && errno == EINTR)
|
|
|
2636 continue;
|
|
|
2637 else
|
|
|
2638 return items_read;
|
|
|
2639 }
|
|
|
2640 b += size*rtnval;
|
|
|
2641 nitem -= rtnval;
|
|
|
2642 items_read += rtnval;
|
|
|
2643 }
|
|
|
2644 return (items_read);
|
|
|
2645 #else
|
|
|
2646 return fread (ptr, size, nitem, stream);
|
|
|
2647 #endif
|
|
|
2648 }
|
|
|
2649 #endif /* ENCAPSULATE_FREAD */
|
|
|
2650
|
|
16
|
2651
|
|
0
|
2652 #ifdef ENCAPSULATE_FWRITE
|
|
|
2653 size_t
|
|
|
2654 sys_fwrite (CONST void *ptr, size_t size, size_t nitem, FILE *stream)
|
|
|
2655 {
|
|
|
2656 #ifdef INTERRUPTIBLE_IO
|
|
|
2657 size_t rtnval;
|
|
|
2658 size_t items_written = 0;
|
|
|
2659 CONST char *b = (CONST char *) ptr;
|
|
|
2660
|
|
|
2661 while (nitem > 0)
|
|
|
2662 {
|
|
|
2663 rtnval = fwrite (b, size, nitem, stream);
|
|
|
2664 if (rtnval == 0)
|
|
|
2665 {
|
|
|
2666 if (ferror (stream) && errno == EINTR)
|
|
|
2667 continue;
|
|
|
2668 else
|
|
|
2669 return items_written;
|
|
|
2670 }
|
|
|
2671 b += size*rtnval;
|
|
|
2672 nitem -= rtnval;
|
|
|
2673 items_written += rtnval;
|
|
|
2674 }
|
|
|
2675 return (items_written);
|
|
|
2676 #else
|
|
|
2677 return fwrite (ptr, size, nitem, stream);
|
|
|
2678 #endif
|
|
|
2679 }
|
|
|
2680 #endif /* ENCAPSULATE_FWRITE */
|
|
|
2681
|
|
|
2682
|
|
|
2683 /********************* directory calls *******************/
|
|
|
2684
|
|
|
2685 #ifdef ENCAPSULATE_CHDIR
|
|
|
2686 int
|
|
|
2687 sys_chdir (CONST char *path)
|
|
|
2688 {
|
|
|
2689 PATHNAME_CONVERT_OUT (path);
|
|
|
2690 #ifdef MSDOS
|
|
|
2691 return dos_chdir (path);
|
|
|
2692 #else
|
|
|
2693 return chdir (path);
|
|
|
2694 #endif
|
|
|
2695 }
|
|
|
2696 #endif /* ENCAPSULATE_CHDIR */
|
|
|
2697
|
|
16
|
2698
|
|
0
|
2699 #ifdef ENCAPSULATE_MKDIR
|
|
|
2700 int
|
|
|
2701 sys_mkdir (CONST char *path, int mode)
|
|
|
2702 {
|
|
|
2703 PATHNAME_CONVERT_OUT (path);
|
|
|
2704 return mkdir (path, mode);
|
|
|
2705 }
|
|
|
2706 #endif /* ENCAPSULATE_MKDIR */
|
|
|
2707
|
|
16
|
2708
|
|
0
|
2709 #ifdef ENCAPSULATE_OPENDIR
|
|
|
2710 DIR *
|
|
|
2711 sys_opendir (CONST char *filename)
|
|
|
2712 {
|
|
|
2713 DIR *rtnval;
|
|
|
2714 PATHNAME_CONVERT_OUT (filename);
|
|
|
2715
|
|
|
2716 while (!(rtnval = opendir (filename))
|
|
|
2717 && (errno == EINTR))
|
|
|
2718 ;
|
|
|
2719 return rtnval;
|
|
|
2720 }
|
|
|
2721 #endif /* ENCAPSULATE_OPENDIR */
|
|
|
2722
|
|
16
|
2723
|
|
0
|
2724 #ifdef ENCAPSULATE_READDIR
|
|
|
2725 DIRENTRY *
|
|
|
2726 sys_readdir (DIR *dirp)
|
|
185
|
2727 {
|
|
0
|
2728 DIRENTRY *rtnval;
|
|
|
2729
|
|
|
2730 /* Apparently setting errno is necessary on some systems?
|
|
|
2731 Maybe readdir() doesn't always set errno ?! */
|
|
|
2732 while (!(errno = 0, rtnval = readdir (dirp))
|
|
|
2733 && (errno == EINTR))
|
|
|
2734 ;
|
|
70
|
2735 #ifndef MULE
|
|
0
|
2736 return rtnval;
|
|
70
|
2737 #else /* MULE */
|
|
|
2738 if (rtnval == NULL) /* End of directory */
|
|
|
2739 return NULL;
|
|
|
2740 {
|
|
|
2741 Extcount external_len;
|
|
|
2742 int ascii_filename_p = 1;
|
|
|
2743 CONST Extbyte * CONST external_name = (CONST Extbyte *) rtnval->d_name;
|
|
185
|
2744
|
|
70
|
2745 /* Optimize for the common all-ASCII case, computing len en passant */
|
|
|
2746 for (external_len = 0; external_name[external_len] ; external_len++)
|
|
|
2747 {
|
|
|
2748 if (!BYTE_ASCII_P (external_name[external_len]))
|
|
|
2749 ascii_filename_p = 0;
|
|
|
2750 }
|
|
|
2751 if (ascii_filename_p)
|
|
|
2752 return rtnval;
|
|
|
2753
|
|
|
2754 { /* Non-ASCII filename */
|
|
185
|
2755 static Bufbyte_dynarr *internal_DIRENTRY;
|
|
70
|
2756 CONST Bufbyte *internal_name;
|
|
|
2757 Bytecount internal_len;
|
|
|
2758 if (!internal_DIRENTRY)
|
|
|
2759 internal_DIRENTRY = Dynarr_new (Bufbyte);
|
|
|
2760 else
|
|
|
2761 Dynarr_reset (internal_DIRENTRY);
|
|
|
2762
|
|
|
2763 Dynarr_add_many (internal_DIRENTRY, (Bufbyte *) rtnval,
|
|
|
2764 offsetof (DIRENTRY, d_name));
|
|
|
2765
|
|
|
2766 internal_name =
|
|
|
2767 convert_from_external_format (external_name, external_len,
|
|
|
2768 &internal_len, FORMAT_FILENAME);
|
|
|
2769
|
|
|
2770 Dynarr_add_many (internal_DIRENTRY, internal_name, internal_len);
|
|
|
2771 Dynarr_add (internal_DIRENTRY, 0); /* zero-terminate */
|
|
|
2772 return (DIRENTRY *) Dynarr_atp (internal_DIRENTRY, 0);
|
|
|
2773 }
|
|
|
2774 }
|
|
|
2775 #endif /* MULE */
|
|
0
|
2776 }
|
|
|
2777 #endif /* ENCAPSULATE_READDIR */
|
|
|
2778
|
|
16
|
2779
|
|
0
|
2780 #ifdef ENCAPSULATE_CLOSEDIR
|
|
|
2781 int
|
|
|
2782 sys_closedir (DIR *dirp)
|
|
|
2783 {
|
|
|
2784 int rtnval;
|
|
|
2785
|
|
|
2786 while ((rtnval = closedir (dirp)) == -1
|
|
|
2787 && (errno == EINTR))
|
|
|
2788 ;
|
|
|
2789 return rtnval;
|
|
|
2790 }
|
|
|
2791 #endif /* ENCAPSULATE_CLOSEDIR */
|
|
|
2792
|
|
16
|
2793
|
|
0
|
2794 #ifdef ENCAPSULATE_RMDIR
|
|
|
2795 int
|
|
|
2796 sys_rmdir (CONST char *path)
|
|
|
2797 {
|
|
|
2798 PATHNAME_CONVERT_OUT (path);
|
|
|
2799 return rmdir (path);
|
|
|
2800 }
|
|
|
2801 #endif /* ENCAPSULATE_RMDIR */
|
|
|
2802
|
|
|
2803
|
|
|
2804 /***************** file-information calls ******************/
|
|
|
2805
|
|
|
2806 #ifdef ENCAPSULATE_ACCESS
|
|
|
2807 int
|
|
|
2808 sys_access (CONST char *path, int mode)
|
|
|
2809 {
|
|
|
2810 PATHNAME_CONVERT_OUT (path);
|
|
|
2811 return access (path, mode);
|
|
|
2812 }
|
|
|
2813 #endif /* ENCAPSULATE_ACCESS */
|
|
|
2814
|
|
16
|
2815
|
|
2
|
2816 #ifdef HAVE_EACCESS
|
|
|
2817 #ifdef ENCAPSULATE_EACCESS
|
|
|
2818 int
|
|
|
2819 sys_eaccess (CONST char *path, int mode)
|
|
|
2820 {
|
|
|
2821 PATHNAME_CONVERT_OUT (path);
|
|
|
2822 return eaccess (path, mode);
|
|
|
2823 }
|
|
|
2824 #endif /* ENCAPSULATE_EACCESS */
|
|
|
2825 #endif /* HAVE_EACCESS */
|
|
|
2826
|
|
|
2827
|
|
0
|
2828 #ifdef ENCAPSULATE_LSTAT
|
|
|
2829 int
|
|
|
2830 sys_lstat (CONST char *path, struct stat *buf)
|
|
|
2831 {
|
|
|
2832 PATHNAME_CONVERT_OUT (path);
|
|
|
2833 return lstat (path, buf);
|
|
|
2834 }
|
|
|
2835 #endif /* ENCAPSULATE_LSTAT */
|
|
|
2836
|
|
16
|
2837
|
|
0
|
2838 #ifdef ENCAPSULATE_READLINK
|
|
|
2839 int
|
|
|
2840 sys_readlink (CONST char *path, char *buf, int bufsiz)
|
|
|
2841 {
|
|
|
2842 PATHNAME_CONVERT_OUT (path);
|
|
|
2843 /* #### currently we don't do conversions on the incoming data */
|
|
|
2844 return readlink (path, buf, bufsiz);
|
|
|
2845 }
|
|
|
2846 #endif /* ENCAPSULATE_READLINK */
|
|
|
2847
|
|
16
|
2848
|
|
0
|
2849 #ifdef ENCAPSULATE_STAT
|
|
|
2850 int
|
|
|
2851 sys_stat (CONST char *path, struct stat *buf)
|
|
|
2852 {
|
|
|
2853 PATHNAME_CONVERT_OUT (path);
|
|
|
2854 return stat (path, buf);
|
|
|
2855 }
|
|
|
2856 #endif /* ENCAPSULATE_STAT */
|
|
|
2857
|
|
|
2858
|
|
|
2859 /****************** file-manipulation calls *****************/
|
|
|
2860
|
|
|
2861 #ifdef ENCAPSULATE_CHMOD
|
|
|
2862 int
|
|
|
2863 sys_chmod (CONST char *path, int mode)
|
|
|
2864 {
|
|
|
2865 PATHNAME_CONVERT_OUT (path);
|
|
|
2866 return chmod (path, mode);
|
|
|
2867 }
|
|
|
2868 #endif /* ENCAPSULATE_CHMOD */
|
|
|
2869
|
|
16
|
2870
|
|
0
|
2871 #ifdef ENCAPSULATE_CREAT
|
|
|
2872 int
|
|
|
2873 sys_creat (CONST char *path, int mode)
|
|
|
2874 {
|
|
|
2875 PATHNAME_CONVERT_OUT (path);
|
|
|
2876 return creat (path, mode);
|
|
|
2877 }
|
|
|
2878 #endif /* ENCAPSULATE_CREAT */
|
|
|
2879
|
|
16
|
2880
|
|
0
|
2881 #ifdef ENCAPSULATE_LINK
|
|
|
2882 int
|
|
|
2883 sys_link (CONST char *existing, CONST char *new)
|
|
|
2884 {
|
|
|
2885 PATHNAME_CONVERT_OUT (existing);
|
|
|
2886 PATHNAME_CONVERT_OUT (new);
|
|
|
2887 return link (existing, new);
|
|
|
2888 }
|
|
|
2889 #endif /* ENCAPSULATE_LINK */
|
|
|
2890
|
|
16
|
2891
|
|
0
|
2892 #ifdef ENCAPSULATE_RENAME
|
|
|
2893 int
|
|
|
2894 sys_rename (CONST char *old, CONST char *new)
|
|
|
2895 {
|
|
|
2896 PATHNAME_CONVERT_OUT (old);
|
|
|
2897 PATHNAME_CONVERT_OUT (new);
|
|
|
2898 return rename (old, new);
|
|
|
2899 }
|
|
|
2900 #endif /* ENCAPSULATE_RENAME */
|
|
|
2901
|
|
16
|
2902
|
|
0
|
2903 #ifdef ENCAPSULATE_SYMLINK
|
|
|
2904 int
|
|
|
2905 sys_symlink (CONST char *name1, CONST char *name2)
|
|
|
2906 {
|
|
|
2907 PATHNAME_CONVERT_OUT (name1);
|
|
|
2908 PATHNAME_CONVERT_OUT (name2);
|
|
|
2909 return symlink (name1, name2);
|
|
|
2910 }
|
|
|
2911 #endif /* ENCAPSULATE_SYMLINK */
|
|
|
2912
|
|
16
|
2913
|
|
0
|
2914 #ifdef ENCAPSULATE_UNLINK
|
|
|
2915 int
|
|
|
2916 sys_unlink (CONST char *path)
|
|
|
2917 {
|
|
|
2918 PATHNAME_CONVERT_OUT (path);
|
|
|
2919 return unlink (path);
|
|
|
2920 }
|
|
|
2921 #endif /* ENCAPSULATE_UNLINK */
|
|
|
2922
|
|
16
|
2923
|
|
|
2924 #ifdef ENCAPSULATE_EXECVP
|
|
|
2925 int
|
|
82
|
2926 sys_execvp (CONST char *path, char * CONST * argv)
|
|
16
|
2927 {
|
|
82
|
2928 int i, argc;
|
|
|
2929 CONST char ** new_argv;
|
|
185
|
2930
|
|
16
|
2931 PATHNAME_CONVERT_OUT (path);
|
|
82
|
2932 for (argc = 0; argv[argc]; argc++)
|
|
|
2933 ;
|
|
185
|
2934 new_argv = alloca_array (CONST char *, argc + 1);
|
|
82
|
2935 for (i = 0; i < argc; i++)
|
|
|
2936 GET_C_CHARPTR_EXT_FILENAME_DATA_ALLOCA (argv[i], new_argv[i]);
|
|
|
2937 new_argv[argc] = NULL;
|
|
|
2938 return execvp (path, (char **) new_argv);
|
|
16
|
2939 }
|
|
|
2940 #endif /* ENCAPSULATE_EXECVP */
|
|
|
2941
|
|
0
|
2942
|
|
|
2943 /************************************************************************/
|
|
|
2944 /* Emulations of missing system calls */
|
|
|
2945 /************************************************************************/
|
|
|
2946
|
|
|
2947 /***** (these are primarily required for USG, it seems) *****/
|
|
|
2948
|
|
163
|
2949 #ifndef HAVE_GETCWD
|
|
|
2950 char *
|
|
|
2951 getcwd (char *pathname, int size)
|
|
|
2952 {
|
|
|
2953 return getwd (pathname);
|
|
|
2954 }
|
|
|
2955 #endif /* emulate getcwd */
|
|
|
2956
|
|
|
2957
|
|
|
2958 #if 0 /* mrb */
|
|
0
|
2959 /*
|
|
16
|
2960 * Warning, this function may not duplicate BSD 4.2 action properly
|
|
0
|
2961 * under error conditions.
|
|
|
2962 */
|
|
|
2963
|
|
|
2964 #ifndef HAVE_GETWD
|
|
|
2965 char *
|
|
|
2966 getwd (char *pathname)
|
|
|
2967 {
|
|
|
2968 char *npath, *spath;
|
|
|
2969 #if !__STDC__ && !defined(STDC_HEADERS)
|
|
|
2970 extern char *getcwd ();
|
|
|
2971 #endif
|
|
|
2972
|
|
|
2973 spath = npath = getcwd ((char *) 0, MAXPATHLEN);
|
|
|
2974 if (spath == 0)
|
|
|
2975 return spath;
|
|
|
2976 /* On Altos 3068, getcwd can return @hostname/dir, so discard
|
|
|
2977 up to first slash. Should be harmless on other systems. */
|
|
|
2978 while (*npath && *npath != '/')
|
|
|
2979 npath++;
|
|
|
2980 strcpy (pathname, npath);
|
|
|
2981 xfree (spath); /* getcwd uses malloc */
|
|
|
2982 return pathname;
|
|
|
2983 }
|
|
|
2984 #endif /* HAVE_GETWD */
|
|
163
|
2985 #endif /* 0 - mrb */
|
|
0
|
2986
|
|
|
2987 /*
|
|
|
2988 * Emulate rename using unlink/link. Note that this is
|
|
|
2989 * only partially correct. Also, doesn't enforce restriction
|
|
|
2990 * that files be of same type (regular->regular, dir->dir, etc).
|
|
|
2991 */
|
|
|
2992
|
|
|
2993 #ifndef HAVE_RENAME
|
|
|
2994 int
|
|
|
2995 rename (CONST char *from, CONST char *to)
|
|
|
2996 {
|
|
|
2997 if (access (from, 0) == 0)
|
|
|
2998 {
|
|
|
2999 unlink (to);
|
|
|
3000 if (link (from, to) == 0)
|
|
|
3001 if (unlink (from) == 0)
|
|
|
3002 return (0);
|
|
|
3003 }
|
|
|
3004 return (-1);
|
|
|
3005 }
|
|
16
|
3006 #endif /* HAVE_RENAME */
|
|
0
|
3007
|
|
|
3008 #ifdef HPUX
|
|
|
3009 #ifndef HAVE_PERROR
|
|
|
3010
|
|
|
3011 /* HPUX curses library references perror, but as far as we know
|
|
|
3012 it won't be called. Anyway this definition will do for now. */
|
|
|
3013
|
|
|
3014 perror (void)
|
|
|
3015 {
|
|
|
3016 }
|
|
|
3017
|
|
|
3018 #endif /* not HAVE_PERROR */
|
|
|
3019 #endif /* HPUX */
|
|
|
3020
|
|
|
3021 #ifndef HAVE_DUP2
|
|
|
3022
|
|
|
3023 /*
|
|
|
3024 * Emulate BSD dup2. First close newd if it already exists.
|
|
|
3025 * Then, attempt to dup oldd. If not successful, call dup2 recursively
|
|
|
3026 * until we are, then close the unsuccessful ones.
|
|
|
3027 */
|
|
|
3028
|
|
|
3029 int
|
|
|
3030 dup2 (int oldd, int newd)
|
|
|
3031 {
|
|
|
3032 int fd, ret;
|
|
185
|
3033
|
|
0
|
3034 sys_close (newd);
|
|
|
3035
|
|
|
3036 #ifdef F_DUPFD
|
|
|
3037 fd = fcntl (oldd, F_DUPFD, newd);
|
|
|
3038 if (fd != newd)
|
|
|
3039 error ("can't dup2 (%i,%i) : %s", oldd, newd, strerror (errno));
|
|
|
3040 #else
|
|
|
3041 fd = dup (old);
|
|
|
3042 if (fd == -1)
|
|
|
3043 return -1;
|
|
|
3044 if (fd == new)
|
|
|
3045 return new;
|
|
|
3046 ret = dup2 (old, new);
|
|
|
3047 sys_close (fd);
|
|
|
3048 return ret;
|
|
|
3049 #endif /* F_DUPFD */
|
|
|
3050 }
|
|
|
3051
|
|
|
3052 #endif /* not HAVE_DUP2 */
|
|
|
3053
|
|
|
3054 /*
|
|
|
3055 * Gettimeofday. Simulate as much as possible. Only accurate
|
|
|
3056 * to nearest second. Emacs doesn't use tzp so ignore it for now.
|
|
|
3057 */
|
|
|
3058
|
|
|
3059 #if !defined (HAVE_GETTIMEOFDAY)
|
|
185
|
3060
|
|
0
|
3061 int
|
|
|
3062 gettimeofday (struct timeval *tp, struct timezone *tzp)
|
|
|
3063 {
|
|
|
3064 extern long time ();
|
|
|
3065
|
|
185
|
3066 tp->tv_sec = time ((long *)0);
|
|
0
|
3067 tp->tv_usec = 0;
|
|
|
3068 if (tzp != 0)
|
|
|
3069 tzp->tz_minuteswest = -1;
|
|
|
3070 return (0);
|
|
|
3071 }
|
|
185
|
3072
|
|
0
|
3073 #endif /* !HAVE_GETTIMEOFDAY */
|
|
185
|
3074
|
|
0
|
3075 /* No need to encapsulate utime and utimes explicitly because all
|
|
|
3076 access to those functions goes through the following. */
|
|
|
3077
|
|
|
3078 int
|
|
|
3079 set_file_times (char *filename, EMACS_TIME atime, EMACS_TIME mtime)
|
|
|
3080 {
|
|
|
3081 #ifdef HAVE_UTIMES
|
|
|
3082 struct timeval tv[2];
|
|
|
3083 tv[0] = atime;
|
|
|
3084 tv[1] = mtime;
|
|
|
3085 return utimes (filename, tv);
|
|
|
3086 #else /* not HAVE_UTIMES */
|
|
|
3087 struct utimbuf utb;
|
|
|
3088 utb.actime = EMACS_SECS (atime);
|
|
|
3089 utb.modtime = EMACS_SECS (mtime);
|
|
|
3090 return utime (filename, &utb);
|
|
|
3091 #endif /* not HAVE_UTIMES */
|
|
|
3092 }
|
|
|
3093
|
|
|
3094 /* */
|
|
|
3095
|
|
|
3096 static long ticks_per_second;
|
|
|
3097 static long orig_user_ticks, orig_system_ticks;
|
|
|
3098 EMACS_TIME orig_real_time;
|
|
|
3099
|
|
|
3100 static int process_times_available;
|
|
|
3101
|
|
|
3102 /* Return the relative user and system tick count. We try to
|
|
|
3103 maintain calculations in terms of integers as long as possible
|
|
|
3104 for increased accuracy. */
|
|
|
3105
|
|
|
3106 static int
|
|
|
3107 get_process_times_1 (long *user_ticks, long *system_ticks)
|
|
|
3108 {
|
|
100
|
3109 #if defined (_SC_CLK_TCK) || defined (CLK_TCK) && !defined(WINDOWSNT)
|
|
0
|
3110 /* We have the POSIX times() function available. */
|
|
|
3111 struct tms tttt;
|
|
|
3112 times (&tttt);
|
|
|
3113 *user_ticks = (long) tttt.tms_utime;
|
|
|
3114 *system_ticks = (long) tttt.tms_stime;
|
|
|
3115 return 1;
|
|
|
3116 #elif defined (CLOCKS_PER_SEC)
|
|
100
|
3117 *user_ticks = (long) clock ();
|
|
|
3118 *system_ticks = 0;
|
|
0
|
3119 return 1;
|
|
|
3120 #else
|
|
|
3121 return 0;
|
|
|
3122 #endif
|
|
|
3123 }
|
|
|
3124
|
|
|
3125 void
|
|
|
3126 init_process_times_very_early (void)
|
|
|
3127 {
|
|
|
3128 #if defined (_SC_CLK_TCK)
|
|
|
3129 ticks_per_second = sysconf (_SC_CLK_TCK);
|
|
|
3130 #elif defined (CLK_TCK)
|
|
|
3131 ticks_per_second = CLK_TCK;
|
|
|
3132 #elif defined (CLOCKS_PER_SEC)
|
|
|
3133 ticks_per_second = CLOCKS_PER_SEC;
|
|
|
3134 #endif
|
|
|
3135
|
|
|
3136 process_times_available = get_process_times_1 (&orig_user_ticks,
|
|
|
3137 &orig_system_ticks);
|
|
|
3138 EMACS_GET_TIME (orig_real_time);
|
|
|
3139 }
|
|
|
3140
|
|
|
3141 /* Return the user and system times used up by this process so far. */
|
|
|
3142 void
|
|
|
3143 get_process_times (double *user_time, double *system_time, double *real_time)
|
|
|
3144 {
|
|
|
3145 EMACS_TIME curr_real_time;
|
|
|
3146 EMACS_TIME elapsed_time;
|
|
|
3147 long curr_user_ticks, curr_system_ticks;
|
|
|
3148
|
|
|
3149 EMACS_GET_TIME (curr_real_time);
|
|
|
3150 EMACS_SUB_TIME (elapsed_time, curr_real_time, orig_real_time);
|
|
|
3151 *real_time = (EMACS_SECS (elapsed_time)
|
|
|
3152 + ((double) EMACS_USECS (elapsed_time)) / 1000000);
|
|
|
3153 if (get_process_times_1 (&curr_user_ticks, &curr_system_ticks))
|
|
|
3154 {
|
|
|
3155 *user_time = (((double) (curr_user_ticks - orig_user_ticks))
|
|
|
3156 / ticks_per_second);
|
|
|
3157 *system_time = (((double) (curr_system_ticks - orig_system_ticks))
|
|
|
3158 / ticks_per_second);
|
|
|
3159 }
|
|
|
3160 else
|
|
|
3161 {
|
|
|
3162 /* MS-DOS or equally lame OS */
|
|
|
3163 *user_time = *real_time;
|
|
|
3164 *system_time = 0;
|
|
|
3165 }
|
|
|
3166 }
|
|
|
3167
|
|
|
3168 #ifndef HAVE_RANDOM
|
|
|
3169 #ifdef random
|
|
|
3170 #define HAVE_RANDOM
|
|
|
3171 #endif
|
|
|
3172 #endif
|
|
|
3173
|
|
|
3174 /* Figure out how many bits the system's random number generator uses.
|
|
|
3175 `random' and `lrand48' are assumed to return 31 usable bits.
|
|
|
3176 BSD `rand' returns a 31 bit value but the low order bits are unusable;
|
|
|
3177 so we'll shift it and treat it like the 15-bit USG `rand'. */
|
|
|
3178
|
|
|
3179 #ifndef RAND_BITS
|
|
|
3180 # ifdef HAVE_RANDOM
|
|
|
3181 # define RAND_BITS 31
|
|
|
3182 # else /* !HAVE_RANDOM */
|
|
|
3183 # ifdef HAVE_LRAND48
|
|
|
3184 # define RAND_BITS 31
|
|
|
3185 # define random lrand48
|
|
|
3186 # else /* !HAVE_LRAND48 */
|
|
|
3187 # define RAND_BITS 15
|
|
|
3188 # if RAND_MAX == 32767
|
|
|
3189 # define random rand
|
|
|
3190 # else /* RAND_MAX != 32767 */
|
|
|
3191 # if RAND_MAX == 2147483647
|
|
|
3192 # define random() (rand () >> 16)
|
|
|
3193 # else /* RAND_MAX != 2147483647 */
|
|
|
3194 # ifdef USG
|
|
|
3195 # define random rand
|
|
|
3196 # else
|
|
|
3197 # define random() (rand () >> 16)
|
|
|
3198 # endif /* !BSD */
|
|
|
3199 # endif /* RAND_MAX != 2147483647 */
|
|
|
3200 # endif /* RAND_MAX != 32767 */
|
|
|
3201 # endif /* !HAVE_LRAND48 */
|
|
|
3202 # endif /* !HAVE_RANDOM */
|
|
|
3203 #endif /* !RAND_BITS */
|
|
|
3204
|
|
|
3205 void seed_random (long arg);
|
|
|
3206 void
|
|
|
3207 seed_random (long arg)
|
|
|
3208 {
|
|
|
3209 #ifdef HAVE_RANDOM
|
|
|
3210 srandom ((unsigned int)arg);
|
|
|
3211 #else
|
|
|
3212 # ifdef HAVE_LRAND48
|
|
|
3213 srand48 (arg);
|
|
|
3214 # else
|
|
|
3215 srand ((unsigned int)arg);
|
|
|
3216 # endif
|
|
|
3217 #endif
|
|
|
3218 }
|
|
|
3219
|
|
|
3220 /*
|
|
|
3221 * Build a full Emacs-sized word out of whatever we've got.
|
|
|
3222 * This suffices even for a 64-bit architecture with a 15-bit rand.
|
|
|
3223 */
|
|
|
3224 long get_random (void);
|
|
|
3225 long
|
|
|
3226 get_random (void)
|
|
|
3227 {
|
|
|
3228 long val = random ();
|
|
|
3229 #if VALBITS > RAND_BITS
|
|
|
3230 val = (val << RAND_BITS) ^ random ();
|
|
|
3231 #if VALBITS > 2*RAND_BITS
|
|
|
3232 val = (val << RAND_BITS) ^ random ();
|
|
|
3233 #if VALBITS > 3*RAND_BITS
|
|
|
3234 val = (val << RAND_BITS) ^ random ();
|
|
|
3235 #if VALBITS > 4*RAND_BITS
|
|
|
3236 val = (val << RAND_BITS) ^ random ();
|
|
|
3237 #endif /* need at least 5 */
|
|
|
3238 #endif /* need at least 4 */
|
|
|
3239 #endif /* need at least 3 */
|
|
|
3240 #endif /* need at least 2 */
|
|
|
3241 return val & ((1L << VALBITS) - 1);
|
|
|
3242 }
|
|
|
3243
|
|
|
3244 #ifdef WRONG_NAME_INSQUE
|
|
|
3245
|
|
|
3246 void
|
|
|
3247 insque (caddr_t q, caddr_t p)
|
|
|
3248 {
|
|
|
3249 _insque (q,p);
|
|
|
3250 }
|
|
|
3251
|
|
|
3252 #endif
|
|
|
3253
|
|
|
3254
|
|
|
3255 /************************************************************************/
|
|
|
3256 /* Strings corresponding to defined signals */
|
|
|
3257 /************************************************************************/
|
|
|
3258
|
|
|
3259 #if !defined (SYS_SIGLIST_DECLARED) && !defined (HAVE_SYS_SIGLIST)
|
|
|
3260
|
|
231
|
3261 #if defined(WINDOWSNT) || defined(__CYGWIN32__)
|
|
|
3262 CONST char *sys_siglist[] =
|
|
100
|
3263 {
|
|
|
3264 "bum signal!!",
|
|
|
3265 "hangup",
|
|
|
3266 "interrupt",
|
|
|
3267 "quit",
|
|
|
3268 "illegal instruction",
|
|
|
3269 "trace trap",
|
|
|
3270 "iot instruction",
|
|
|
3271 "emt instruction",
|
|
|
3272 "floating point exception",
|
|
|
3273 "kill",
|
|
|
3274 "bus error",
|
|
|
3275 "segmentation violation",
|
|
|
3276 "bad argument to system call",
|
|
|
3277 "write on a pipe with no one to read it",
|
|
|
3278 "alarm clock",
|
|
|
3279 "software termination signal from kill",
|
|
|
3280 "status signal",
|
|
|
3281 "sendable stop signal not from tty",
|
|
|
3282 "stop signal from tty",
|
|
|
3283 "continue a stopped process",
|
|
|
3284 "child status has changed",
|
|
|
3285 "background read attempted from control tty",
|
|
|
3286 "background write attempted from control tty",
|
|
|
3287 "input record available at control tty",
|
|
|
3288 "exceeded CPU time limit",
|
|
|
3289 "exceeded file size limit"
|
|
|
3290 };
|
|
|
3291 #endif
|
|
|
3292
|
|
0
|
3293 #ifdef USG
|
|
|
3294 #ifdef AIX
|
|
|
3295 CONST char *sys_siglist[NSIG + 1] =
|
|
|
3296 {
|
|
|
3297 /* AIX has changed the signals a bit */
|
|
|
3298 DEFER_GETTEXT ("bogus signal"), /* 0 */
|
|
|
3299 DEFER_GETTEXT ("hangup"), /* 1 SIGHUP */
|
|
|
3300 DEFER_GETTEXT ("interrupt"), /* 2 SIGINT */
|
|
|
3301 DEFER_GETTEXT ("quit"), /* 3 SIGQUIT */
|
|
|
3302 DEFER_GETTEXT ("illegal instruction"), /* 4 SIGILL */
|
|
|
3303 DEFER_GETTEXT ("trace trap"), /* 5 SIGTRAP */
|
|
|
3304 DEFER_GETTEXT ("IOT instruction"), /* 6 SIGIOT */
|
|
|
3305 DEFER_GETTEXT ("crash likely"), /* 7 SIGDANGER */
|
|
|
3306 DEFER_GETTEXT ("floating point exception"), /* 8 SIGFPE */
|
|
|
3307 DEFER_GETTEXT ("kill"), /* 9 SIGKILL */
|
|
|
3308 DEFER_GETTEXT ("bus error"), /* 10 SIGBUS */
|
|
|
3309 DEFER_GETTEXT ("segmentation violation"), /* 11 SIGSEGV */
|
|
|
3310 DEFER_GETTEXT ("bad argument to system call"), /* 12 SIGSYS */
|
|
|
3311 DEFER_GETTEXT ("write on a pipe with no one to read it"), /* 13 SIGPIPE */
|
|
|
3312 DEFER_GETTEXT ("alarm clock"), /* 14 SIGALRM */
|
|
|
3313 DEFER_GETTEXT ("software termination signum"), /* 15 SIGTERM */
|
|
|
3314 DEFER_GETTEXT ("user defined signal 1"), /* 16 SIGUSR1 */
|
|
|
3315 DEFER_GETTEXT ("user defined signal 2"), /* 17 SIGUSR2 */
|
|
|
3316 DEFER_GETTEXT ("death of a child"), /* 18 SIGCLD */
|
|
|
3317 DEFER_GETTEXT ("power-fail restart"), /* 19 SIGPWR */
|
|
|
3318 DEFER_GETTEXT ("bogus signal"), /* 20 */
|
|
|
3319 DEFER_GETTEXT ("bogus signal"), /* 21 */
|
|
|
3320 DEFER_GETTEXT ("bogus signal"), /* 22 */
|
|
|
3321 DEFER_GETTEXT ("bogus signal"), /* 23 */
|
|
|
3322 DEFER_GETTEXT ("bogus signal"), /* 24 */
|
|
|
3323 DEFER_GETTEXT ("LAN I/O interrupt"), /* 25 SIGAIO */
|
|
|
3324 DEFER_GETTEXT ("PTY I/O interrupt"), /* 26 SIGPTY */
|
|
|
3325 DEFER_GETTEXT ("I/O intervention required"), /* 27 SIGIOINT */
|
|
|
3326 #ifdef AIXHFT
|
|
|
3327 DEFER_GETTEXT ("HFT grant"), /* 28 SIGGRANT */
|
|
|
3328 DEFER_GETTEXT ("HFT retract"), /* 29 SIGRETRACT */
|
|
|
3329 DEFER_GETTEXT ("HFT sound done"), /* 30 SIGSOUND */
|
|
|
3330 DEFER_GETTEXT ("HFT input ready"), /* 31 SIGMSG */
|
|
|
3331 #endif
|
|
|
3332 0
|
|
|
3333 };
|
|
|
3334 #else /* USG, not AIX */
|
|
|
3335 CONST char *sys_siglist[NSIG + 1] =
|
|
|
3336 {
|
|
|
3337 DEFER_GETTEXT ("bogus signal"), /* 0 */
|
|
|
3338 DEFER_GETTEXT ("hangup"), /* 1 SIGHUP */
|
|
|
3339 DEFER_GETTEXT ("interrupt"), /* 2 SIGINT */
|
|
|
3340 DEFER_GETTEXT ("quit"), /* 3 SIGQUIT */
|
|
|
3341 DEFER_GETTEXT ("illegal instruction"), /* 4 SIGILL */
|
|
|
3342 DEFER_GETTEXT ("trace trap"), /* 5 SIGTRAP */
|
|
|
3343 DEFER_GETTEXT ("IOT instruction"), /* 6 SIGIOT */
|
|
|
3344 DEFER_GETTEXT ("EMT instruction"), /* 7 SIGEMT */
|
|
|
3345 DEFER_GETTEXT ("floating point exception"), /* 8 SIGFPE */
|
|
|
3346 DEFER_GETTEXT ("kill"), /* 9 SIGKILL */
|
|
|
3347 DEFER_GETTEXT ("bus error"), /* 10 SIGBUS */
|
|
|
3348 DEFER_GETTEXT ("segmentation violation"), /* 11 SIGSEGV */
|
|
|
3349 DEFER_GETTEXT ("bad argument to system call"), /* 12 SIGSYS */
|
|
|
3350 DEFER_GETTEXT ("write on a pipe with no one to read it"), /* 13 SIGPIPE */
|
|
|
3351 DEFER_GETTEXT ("alarm clock"), /* 14 SIGALRM */
|
|
|
3352 DEFER_GETTEXT ("software termination signum"), /* 15 SIGTERM */
|
|
|
3353 DEFER_GETTEXT ("user defined signal 1"), /* 16 SIGUSR1 */
|
|
|
3354 DEFER_GETTEXT ("user defined signal 2"), /* 17 SIGUSR2 */
|
|
|
3355 DEFER_GETTEXT ("death of a child"), /* 18 SIGCLD */
|
|
|
3356 DEFER_GETTEXT ("power-fail restart"), /* 19 SIGPWR */
|
|
|
3357 #ifdef sun
|
|
|
3358 DEFER_GETTEXT ("window size changed"), /* 20 SIGWINCH */
|
|
|
3359 DEFER_GETTEXT ("urgent socket condition"), /* 21 SIGURG */
|
|
|
3360 DEFER_GETTEXT ("pollable event occurred"), /* 22 SIGPOLL */
|
|
|
3361 DEFER_GETTEXT ("stop (cannot be caught or ignored)"), /* 23 SIGSTOP */
|
|
|
3362 DEFER_GETTEXT ("user stop requested from tty"), /* 24 SIGTSTP */
|
|
|
3363 DEFER_GETTEXT ("stopped process has been continued"), /* 25 SIGCONT */
|
|
|
3364 DEFER_GETTEXT ("background tty read attempted"), /* 26 SIGTTIN */
|
|
|
3365 DEFER_GETTEXT ("background tty write attempted"), /* 27 SIGTTOU */
|
|
|
3366 DEFER_GETTEXT ("virtual timer expired"), /* 28 SIGVTALRM */
|
|
|
3367 DEFER_GETTEXT ("profiling timer expired"), /* 29 SIGPROF */
|
|
|
3368 DEFER_GETTEXT ("exceeded cpu limit"), /* 30 SIGXCPU */
|
|
|
3369 DEFER_GETTEXT ("exceeded file size limit"), /* 31 SIGXFSZ */
|
|
|
3370 DEFER_GETTEXT ("process's lwps are blocked"), /* 32 SIGWAITING */
|
|
|
3371 DEFER_GETTEXT ("special signal used by thread library"), /* 33 SIGLWP */
|
|
|
3372 #ifdef SIGFREEZE
|
|
|
3373 DEFER_GETTEXT ("special signal used by CPR"), /* 34 SIGFREEZE */
|
|
|
3374 #endif
|
|
|
3375 #ifdef SIGTHAW
|
|
|
3376 DEFER_GETTEXT ("special signal used by CPR"), /* 35 SIGTHAW */
|
|
|
3377 #endif
|
|
|
3378 #endif /* sun */
|
|
|
3379 0
|
|
|
3380 };
|
|
|
3381 #endif /* not AIX */
|
|
|
3382 #endif /* USG */
|
|
|
3383 #ifdef DGUX
|
|
|
3384 CONST char *sys_siglist[NSIG + 1] =
|
|
|
3385 {
|
|
|
3386 DEFER_GETTEXT ("null signal"), /* 0 SIGNULL */
|
|
|
3387 DEFER_GETTEXT ("hangup"), /* 1 SIGHUP */
|
|
|
3388 DEFER_GETTEXT ("interrupt"), /* 2 SIGINT */
|
|
|
3389 DEFER_GETTEXT ("quit"), /* 3 SIGQUIT */
|
|
|
3390 DEFER_GETTEXT ("illegal instruction"), /* 4 SIGILL */
|
|
|
3391 DEFER_GETTEXT ("trace trap"), /* 5 SIGTRAP */
|
|
|
3392 DEFER_GETTEXT ("abort termination"), /* 6 SIGABRT */
|
|
|
3393 DEFER_GETTEXT ("SIGEMT"), /* 7 SIGEMT */
|
|
|
3394 DEFER_GETTEXT ("floating point exception"), /* 8 SIGFPE */
|
|
|
3395 DEFER_GETTEXT ("kill"), /* 9 SIGKILL */
|
|
|
3396 DEFER_GETTEXT ("bus error"), /* 10 SIGBUS */
|
|
|
3397 DEFER_GETTEXT ("segmentation violation"), /* 11 SIGSEGV */
|
|
|
3398 DEFER_GETTEXT ("bad argument to system call"), /* 12 SIGSYS */
|
|
|
3399 DEFER_GETTEXT ("write on a pipe with no reader"), /* 13 SIGPIPE */
|
|
|
3400 DEFER_GETTEXT ("alarm clock"), /* 14 SIGALRM */
|
|
|
3401 DEFER_GETTEXT ("software termination signal"), /* 15 SIGTERM */
|
|
|
3402 DEFER_GETTEXT ("user defined signal 1"), /* 16 SIGUSR1 */
|
|
|
3403 DEFER_GETTEXT ("user defined signal 2"), /* 17 SIGUSR2 */
|
|
|
3404 DEFER_GETTEXT ("child stopped or terminated"), /* 18 SIGCLD */
|
|
|
3405 DEFER_GETTEXT ("power-fail restart"), /* 19 SIGPWR */
|
|
|
3406 DEFER_GETTEXT ("window size changed"), /* 20 SIGWINCH */
|
|
|
3407 DEFER_GETTEXT ("undefined"), /* 21 */
|
|
|
3408 DEFER_GETTEXT ("pollable event occurred"), /* 22 SIGPOLL */
|
|
|
3409 DEFER_GETTEXT ("sendable stop signal not from tty"), /* 23 SIGSTOP */
|
|
|
3410 DEFER_GETTEXT ("stop signal from tty"), /* 24 SIGSTP */
|
|
|
3411 DEFER_GETTEXT ("continue a stopped process"), /* 25 SIGCONT */
|
|
|
3412 DEFER_GETTEXT ("attempted background tty read"), /* 26 SIGTTIN */
|
|
|
3413 DEFER_GETTEXT ("attempted background tty write"), /* 27 SIGTTOU */
|
|
|
3414 DEFER_GETTEXT ("undefined"), /* 28 */
|
|
|
3415 DEFER_GETTEXT ("undefined"), /* 29 */
|
|
|
3416 DEFER_GETTEXT ("undefined"), /* 30 */
|
|
|
3417 DEFER_GETTEXT ("undefined"), /* 31 */
|
|
|
3418 DEFER_GETTEXT ("undefined"), /* 32 */
|
|
|
3419 DEFER_GETTEXT ("socket (TCP/IP) urgent data arrival"), /* 33 SIGURG */
|
|
|
3420 DEFER_GETTEXT ("I/O is possible"), /* 34 SIGIO */
|
|
|
3421 DEFER_GETTEXT ("exceeded cpu time limit"), /* 35 SIGXCPU */
|
|
|
3422 DEFER_GETTEXT ("exceeded file size limit"), /* 36 SIGXFSZ */
|
|
|
3423 DEFER_GETTEXT ("virtual time alarm"), /* 37 SIGVTALRM */
|
|
|
3424 DEFER_GETTEXT ("profiling time alarm"), /* 38 SIGPROF */
|
|
|
3425 DEFER_GETTEXT ("undefined"), /* 39 */
|
|
|
3426 DEFER_GETTEXT ("file record locks revoked"), /* 40 SIGLOST */
|
|
|
3427 DEFER_GETTEXT ("undefined"), /* 41 */
|
|
|
3428 DEFER_GETTEXT ("undefined"), /* 42 */
|
|
|
3429 DEFER_GETTEXT ("undefined"), /* 43 */
|
|
|
3430 DEFER_GETTEXT ("undefined"), /* 44 */
|
|
|
3431 DEFER_GETTEXT ("undefined"), /* 45 */
|
|
|
3432 DEFER_GETTEXT ("undefined"), /* 46 */
|
|
|
3433 DEFER_GETTEXT ("undefined"), /* 47 */
|
|
|
3434 DEFER_GETTEXT ("undefined"), /* 48 */
|
|
|
3435 DEFER_GETTEXT ("undefined"), /* 49 */
|
|
|
3436 DEFER_GETTEXT ("undefined"), /* 50 */
|
|
|
3437 DEFER_GETTEXT ("undefined"), /* 51 */
|
|
|
3438 DEFER_GETTEXT ("undefined"), /* 52 */
|
|
|
3439 DEFER_GETTEXT ("undefined"), /* 53 */
|
|
|
3440 DEFER_GETTEXT ("undefined"), /* 54 */
|
|
|
3441 DEFER_GETTEXT ("undefined"), /* 55 */
|
|
|
3442 DEFER_GETTEXT ("undefined"), /* 56 */
|
|
|
3443 DEFER_GETTEXT ("undefined"), /* 57 */
|
|
|
3444 DEFER_GETTEXT ("undefined"), /* 58 */
|
|
|
3445 DEFER_GETTEXT ("undefined"), /* 59 */
|
|
|
3446 DEFER_GETTEXT ("undefined"), /* 60 */
|
|
|
3447 DEFER_GETTEXT ("undefined"), /* 61 */
|
|
|
3448 DEFER_GETTEXT ("undefined"), /* 62 */
|
|
|
3449 DEFER_GETTEXT ("undefined"), /* 63 */
|
|
|
3450 DEFER_GETTEXT ("notification message in mess. queue"), /* 64 SIGDGNOTIFY */
|
|
|
3451 0
|
|
|
3452 };
|
|
|
3453 #endif /* DGUX */
|
|
|
3454
|
|
|
3455 #endif /* ! SYS_SIGLIST_DECLARED && ! HAVE_SYS_SIGLIST */
|
|
|
3456
|
|
|
3457
|
|
|
3458 /************************************************************************/
|
|
|
3459 /* Directory routines for systems that don't have them */
|
|
|
3460 /************************************************************************/
|
|
|
3461
|
|
|
3462 #ifdef SYSV_SYSTEM_DIR
|
|
|
3463
|
|
|
3464 #include <dirent.h>
|
|
|
3465
|
|
|
3466 #if defined(BROKEN_CLOSEDIR) || !defined(HAVE_CLOSEDIR)
|
|
|
3467 int
|
|
|
3468 closedir (DIR *dirp) /* stream from opendir */
|
|
|
3469 {
|
|
|
3470 int rtnval;
|
|
|
3471
|
|
|
3472 rtnval = sys_close (dirp->dd_fd);
|
|
|
3473
|
|
|
3474 /* Some systems (like Solaris) allocate the buffer and the DIR all
|
|
|
3475 in one block. Why in the world are we freeing this ourselves
|
|
|
3476 anyway? */
|
|
|
3477 #if ! (defined (sun) && defined (USG5_4))
|
|
|
3478 xfree ((char *) dirp->dd_buf); /* directory block defined in <dirent.h> */
|
|
|
3479 #endif
|
|
|
3480 xfree ((char *) dirp);
|
|
|
3481 return (rtnval);
|
|
|
3482 }
|
|
|
3483 #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
|
|
|
3484 #endif /* SYSV_SYSTEM_DIR */
|
|
|
3485
|
|
|
3486 #ifdef NONSYSTEM_DIR_LIBRARY
|
|
|
3487
|
|
|
3488 DIR *
|
|
|
3489 opendir (CONST char *filename) /* name of directory */
|
|
|
3490 {
|
|
|
3491 DIR *dirp; /* -> malloc'ed storage */
|
|
|
3492 int fd; /* file descriptor for read */
|
|
|
3493 struct stat sbuf; /* result of fstat */
|
|
|
3494
|
|
|
3495 fd = sys_open (filename, 0);
|
|
|
3496 if (fd < 0)
|
|
|
3497 return 0;
|
|
|
3498
|
|
|
3499 if (fstat (fd, &sbuf) < 0
|
|
|
3500 || (sbuf.st_mode & S_IFMT) != S_IFDIR
|
|
|
3501 || (dirp = (DIR *) malloc (sizeof (DIR))) == 0)
|
|
|
3502 {
|
|
|
3503 sys_close (fd);
|
|
|
3504 return 0; /* bad luck today */
|
|
|
3505 }
|
|
|
3506
|
|
|
3507 dirp->dd_fd = fd;
|
|
|
3508 dirp->dd_loc = dirp->dd_size = 0; /* refill needed */
|
|
|
3509
|
|
|
3510 return dirp;
|
|
|
3511 }
|
|
|
3512
|
|
|
3513 void
|
|
|
3514 closedir (DIR *dirp) /* stream from opendir */
|
|
|
3515 {
|
|
|
3516 sys_close (dirp->dd_fd);
|
|
|
3517 xfree (dirp);
|
|
|
3518 }
|
|
|
3519
|
|
|
3520
|
|
|
3521 #define DIRSIZ 14
|
|
|
3522 struct olddir
|
|
|
3523 {
|
|
|
3524 ino_t od_ino; /* inode */
|
|
|
3525 char od_name[DIRSIZ]; /* filename */
|
|
|
3526 };
|
|
|
3527
|
|
|
3528 static struct direct dir_static; /* simulated directory contents */
|
|
|
3529
|
|
|
3530 /* ARGUSED */
|
|
|
3531 struct direct *
|
|
|
3532 readdir (DIR *dirp) /* stream from opendir */
|
|
|
3533 {
|
|
|
3534 struct olddir *dp; /* -> directory data */
|
|
|
3535
|
|
|
3536 for (; ;)
|
|
|
3537 {
|
|
|
3538 if (dirp->dd_loc >= dirp->dd_size)
|
|
|
3539 dirp->dd_loc = dirp->dd_size = 0;
|
|
|
3540
|
|
|
3541 if (dirp->dd_size == 0 /* refill buffer */
|
|
|
3542 && (dirp->dd_size = sys_read (dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ)) <= 0)
|
|
|
3543 return 0;
|
|
|
3544
|
|
|
3545 dp = (struct olddir *) &dirp->dd_buf[dirp->dd_loc];
|
|
|
3546 dirp->dd_loc += sizeof (struct olddir);
|
|
|
3547
|
|
|
3548 if (dp->od_ino != 0) /* not deleted entry */
|
|
|
3549 {
|
|
|
3550 dir_static.d_ino = dp->od_ino;
|
|
|
3551 strncpy (dir_static.d_name, dp->od_name, DIRSIZ);
|
|
|
3552 dir_static.d_name[DIRSIZ] = '\0';
|
|
|
3553 dir_static.d_namlen = strlen (dir_static.d_name);
|
|
|
3554 dir_static.d_reclen = sizeof (struct direct)
|
|
|
3555 - MAXNAMLEN + 3
|
|
|
3556 + dir_static.d_namlen - dir_static.d_namlen % 4;
|
|
|
3557 return &dir_static; /* -> simulated structure */
|
|
|
3558 }
|
|
|
3559 }
|
|
|
3560 }
|
|
|
3561
|
|
|
3562
|
|
|
3563 #endif /* NONSYSTEM_DIR_LIBRARY */
|
|
|
3564
|
|
|
3565
|
|
|
3566 /* mkdir and rmdir functions, for systems which don't have them. */
|
|
|
3567
|
|
|
3568 #ifndef HAVE_MKDIR
|
|
|
3569 /*
|
|
|
3570 * Written by Robert Rother, Mariah Corporation, August 1985.
|
|
|
3571 *
|
|
|
3572 * If you want it, it's yours. All I ask in return is that if you
|
|
|
3573 * figure out how to do this in a Bourne Shell script you send me
|
|
|
3574 * a copy.
|
|
|
3575 * sdcsvax!rmr or rmr@uscd
|
|
|
3576 *
|
|
|
3577 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
|
|
|
3578 * subroutine. 11Mar86; hoptoad!gnu
|
|
|
3579 *
|
|
|
3580 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
|
|
|
3581 * subroutine didn't return EEXIST. It does now.
|
|
|
3582 */
|
|
|
3583
|
|
|
3584 /*
|
|
|
3585 * Make a directory.
|
|
|
3586 */
|
|
|
3587 #ifdef MKDIR_PROTOTYPE
|
|
|
3588 MKDIR_PROTOTYPE
|
|
|
3589 #else
|
|
|
3590 int
|
|
|
3591 mkdir (CONST char *dpath, int dmode)
|
|
|
3592 #endif
|
|
|
3593 {
|
|
|
3594 int cpid, status, fd;
|
|
|
3595 struct stat statbuf;
|
|
|
3596
|
|
|
3597 if (stat (dpath, &statbuf) == 0)
|
|
|
3598 {
|
|
|
3599 errno = EEXIST; /* Stat worked, so it already exists */
|
|
|
3600 return -1;
|
|
|
3601 }
|
|
|
3602
|
|
|
3603 /* If stat fails for a reason other than non-existence, return error */
|
|
|
3604 if (errno != ENOENT)
|
|
|
3605 return -1;
|
|
|
3606
|
|
|
3607 synch_process_alive = 1;
|
|
|
3608 switch (cpid = fork ())
|
|
|
3609 {
|
|
|
3610
|
|
|
3611 case -1: /* Error in fork() */
|
|
|
3612 return (-1); /* Errno is set already */
|
|
|
3613
|
|
|
3614 case 0: /* Child process */
|
|
|
3615 {
|
|
|
3616 /*
|
|
|
3617 * Cheap hack to set mode of new directory. Since this
|
|
|
3618 * child process is going away anyway, we zap its umask.
|
|
|
3619 * ####, this won't suffice to set SUID, SGID, etc. on this
|
|
|
3620 * directory. Does anybody care?
|
|
|
3621 */
|
|
|
3622 status = umask (0); /* Get current umask */
|
|
|
3623 status = umask (status | (0777 & ~dmode)); /* Set for mkdir */
|
|
|
3624 fd = sys_open ("/dev/null", 2);
|
|
|
3625 if (fd >= 0)
|
|
|
3626 {
|
|
|
3627 dup2 (fd, 0);
|
|
|
3628 dup2 (fd, 1);
|
|
|
3629 dup2 (fd, 2);
|
|
|
3630 }
|
|
|
3631 execl ("/bin/mkdir", "mkdir", dpath, (char *) 0);
|
|
|
3632 _exit (-1); /* Can't exec /bin/mkdir */
|
|
|
3633 }
|
|
|
3634
|
|
|
3635 default: /* Parent process */
|
|
|
3636 wait_for_termination (cpid);
|
|
|
3637 }
|
|
|
3638
|
|
|
3639 if (synch_process_death != 0 || synch_process_retcode != 0)
|
|
|
3640 {
|
|
|
3641 errno = EIO; /* We don't know why, but */
|
|
|
3642 return -1; /* /bin/mkdir failed */
|
|
|
3643 }
|
|
|
3644
|
|
|
3645 return 0;
|
|
|
3646 }
|
|
|
3647 #endif /* not HAVE_MKDIR */
|
|
|
3648
|
|
|
3649 #ifndef HAVE_RMDIR
|
|
|
3650 int
|
|
|
3651 rmdir (CONST char *dpath)
|
|
|
3652 {
|
|
|
3653 int cpid, status, fd;
|
|
|
3654 struct stat statbuf;
|
|
|
3655
|
|
|
3656 if (stat (dpath, &statbuf) != 0)
|
|
|
3657 {
|
|
|
3658 /* Stat just set errno. We don't have to */
|
|
|
3659 return -1;
|
|
|
3660 }
|
|
|
3661
|
|
|
3662 synch_process_alive = 1;
|
|
|
3663 switch (cpid = fork ())
|
|
|
3664 {
|
|
|
3665
|
|
|
3666 case -1: /* Error in fork() */
|
|
|
3667 return (-1); /* Errno is set already */
|
|
|
3668
|
|
|
3669 case 0: /* Child process */
|
|
|
3670 fd = sys_open("/dev/null", 2);
|
|
|
3671 if (fd >= 0)
|
|
|
3672 {
|
|
|
3673 dup2 (fd, 0);
|
|
|
3674 dup2 (fd, 1);
|
|
|
3675 dup2 (fd, 2);
|
|
|
3676 }
|
|
|
3677 execl ("/bin/rmdir", "rmdir", dpath, (char *) 0);
|
|
|
3678 _exit (-1); /* Can't exec /bin/mkdir */
|
|
|
3679
|
|
|
3680 default: /* Parent process */
|
|
|
3681 wait_for_termination (cpid);
|
|
|
3682 }
|
|
|
3683
|
|
|
3684 if (synch_process_death != 0 || synch_process_retcode != 0)
|
|
|
3685 {
|
|
|
3686 errno = EIO; /* We don't know why, but */
|
|
|
3687 return -1; /* /bin/rmdir failed */
|
|
|
3688 }
|
|
|
3689
|
|
|
3690 return 0;
|
|
|
3691 }
|
|
|
3692 #endif /* !HAVE_RMDIR */
|
|
|
3693
|
|
|
3694
|
|
|
3695 /************************************************************************/
|
|
|
3696 /* Misc. SunOS crap */
|
|
|
3697 /************************************************************************/
|
|
|
3698
|
|
|
3699 #ifdef USE_DL_STUBS
|
|
|
3700
|
|
|
3701 /* These are included on Sunos 4.1 when we do not use shared libraries.
|
|
|
3702 X11 libraries may refer to these functions but (we hope) do not
|
|
|
3703 actually call them. */
|
|
|
3704
|
|
|
3705 void *
|
|
|
3706 dlopen (void)
|
|
|
3707 {
|
|
|
3708 return 0;
|
|
|
3709 }
|
|
|
3710
|
|
|
3711 void *
|
|
|
3712 dlsym (void)
|
|
|
3713 {
|
|
|
3714 return 0;
|
|
|
3715 }
|
|
|
3716
|
|
|
3717 int
|
|
|
3718 dlclose (void)
|
|
|
3719 {
|
|
|
3720 return -1;
|
|
|
3721 }
|
|
|
3722
|
|
|
3723 #endif /* USE_DL_STUBS */
|
|
|
3724
|
|
|
3725
|
|
|
3726
|
|
|
3727 #ifndef HAVE_STRCASECMP
|
|
|
3728 /*
|
|
|
3729 * From BSD
|
|
|
3730 */
|
|
|
3731 static unsigned char charmap[] = {
|
|
|
3732 '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
|
|
|
3733 '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
|
|
|
3734 '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
|
|
|
3735 '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
|
|
|
3736 '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
|
|
|
3737 '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
|
|
|
3738 '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
|
|
|
3739 '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
|
|
|
3740 '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
|
|
|
3741 '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
|
|
|
3742 '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
|
|
|
3743 '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
|
|
|
3744 '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
|
|
|
3745 '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
|
|
|
3746 '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
|
|
|
3747 '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
|
|
|
3748 '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
|
|
|
3749 '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
|
|
|
3750 '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
|
|
|
3751 '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
|
|
|
3752 '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
|
|
|
3753 '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
|
|
|
3754 '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
|
|
|
3755 '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
|
|
|
3756 '\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307',
|
|
|
3757 '\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317',
|
|
|
3758 '\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327',
|
|
|
3759 '\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337',
|
|
|
3760 '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
|
|
|
3761 '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
|
|
|
3762 '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
|
|
|
3763 '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377',
|
|
|
3764 };
|
|
|
3765
|
|
|
3766 int
|
|
|
3767 strcasecmp (char *s1, char *s2)
|
|
|
3768 {
|
|
|
3769 unsigned char *cm = charmap;
|
|
|
3770 unsigned char *us1 = (unsigned char *) s1;
|
|
|
3771 unsigned char *us2 = (unsigned char *)s2;
|
|
|
3772
|
|
|
3773 while (cm[*us1] == cm[*us2++])
|
|
|
3774 if (*us1++ == '\0')
|
|
|
3775 return (0);
|
|
|
3776
|
|
|
3777 return (cm[*us1] - cm[*--us2]);
|
|
|
3778 }
|
|
|
3779 #endif /* !HAVE_STRCASECMP */
|
