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0
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1 /* Asynchronous subprocess control for XEmacs.
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2 Copyright (C) 1985, 1986, 1987, 1988, 1992, 1993, 1994, 1995
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3 Free Software Foundation, Inc.
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4 Copyright (C) 1995 Sun Microsystems, Inc.
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5 Copyright (C) 1995, 1996 Ben Wing.
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6
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7 This file is part of XEmacs.
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8
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9 XEmacs is free software; you can redistribute it and/or modify it
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10 under the terms of the GNU General Public License as published by the
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11 Free Software Foundation; either version 2, or (at your option) any
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12 later version.
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13
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14 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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17 for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with XEmacs; see the file COPYING. If not, write to
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21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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22 Boston, MA 02111-1307, USA. */
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23
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24 /* Synched up with: Mule 2.0, FSF 19.30. */
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25
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26 /* This file has been Mule-ized except for `start-process-internal'
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27 and `open-network-stream-internal'. */
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28
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29 #include <config.h>
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30
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31 #if !defined (NO_SUBPROCESSES)
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32
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33 /* The entire file is within this conditional */
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34
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35 #include "lisp.h"
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36
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37 #include "buffer.h"
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38 #include "commands.h"
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39 #include "events.h"
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40 #include "frame.h"
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41 #include "insdel.h"
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42 #include "lstream.h"
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43 #include "opaque.h"
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44 #include "process.h"
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45 #include "sysdep.h"
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46 #include "window.h"
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47
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48 #include <setjmp.h>
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49 #include "sysfile.h"
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50 #include "sysproc.h"
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51 #include "systime.h"
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52 #include "syssignal.h" /* Always include before systty.h */
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53
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54 #include "systty.h"
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55 #include "syswait.h"
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56
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57 /* a process object is a network connection when its pid field a cons
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58 (name of name of port we are connected to . foreign host name) */
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59
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60 /* Valid values of process->status_symbol */
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61 Lisp_Object Qrun, Qstop; /* Qexit from eval.c, Qsignal from data.c. */
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62 /* Qrun => Qopen, Qexit => Qclosed for "network connection" processes */
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63 Lisp_Object Qopen, Qclosed;
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64
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65 /* t means use pty, nil means use a pipe,
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66 maybe other values to come. */
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67 static Lisp_Object Vprocess_connection_type;
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68
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69 /* FSFmacs says:
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70
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71 These next two vars are non-static since sysdep.c uses them in the
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72 emulation of `select'. */
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73 /* Number of events of change of status of a process. */
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74 static volatile int process_tick;
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75
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76 /* Number of events for which the user or sentinel has been notified. */
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77 static int update_tick;
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78
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79 /* Nonzero means delete a process right away if it exits. */
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80 int delete_exited_processes;
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81
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82 /* Indexed by descriptor, gives the process (if any) for that descriptor */
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83 Lisp_Object descriptor_to_process[MAXDESC];
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84
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85 /* List of process objects. */
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86 Lisp_Object Vprocess_list;
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87
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88 Lisp_Object Qprocessp;
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89
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90 /* Buffered-ahead input char from process, indexed by channel.
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91 -1 means empty (no char is buffered).
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92 Used on sys V where the only way to tell if there is any
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93 output from the process is to read at least one char.
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94 Always -1 on systems that support FIONREAD. */
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95
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96 /* FSFmacs says:
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97 Don't make static; need to access externally. */
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98 static int proc_buffered_char[MAXDESC];
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99
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100 #ifdef HAVE_PTYS
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101 /* The file name of the pty opened by allocate_pty. */
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102
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103 static char pty_name[24];
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104 #endif
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105
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106
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107 /************************************************************************/
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108 /* the process Lisp object */
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109 /************************************************************************/
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110
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111 /*
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112 * Structure records pertinent information about open channels.
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113 * There is one channel associated with each process.
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114 */
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115
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116 struct Lisp_Process
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117 {
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118 struct lcrecord_header header;
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119 /* Name of this process */
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120 Lisp_Object name;
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121 /* List of command arguments that this process was run with */
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122 Lisp_Object command;
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123 /* (funcall FILTER PROC STRING) (if FILTER is non-nil)
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124 to dispose of a bunch of chars from the process all at once */
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125 Lisp_Object filter;
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126 /* (funcall SENTINEL PROCESS) when process state changes */
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127 Lisp_Object sentinel;
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128 /* Buffer that output is going to */
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129 Lisp_Object buffer;
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130 /* Marker set to end of last buffer-inserted output from this process */
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131 Lisp_Object mark;
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132 /* Lisp_Int of subprocess' PID, or a cons of
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133 service/host if this is really a network connection */
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134 Lisp_Object pid;
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135 /* Non-0 if this is really a ToolTalk channel. */
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136 int connected_via_filedesc_p;
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137 #if 0 /* FSFmacs */
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138 /* Perhaps it's cleaner this way, but FSFmacs
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139 provides no way of retrieving this value, so I'll
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140 leave this info with PID. */
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141 /* Non-nil if this is really a child process */
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142 Lisp_Object childp;
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143 #endif
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144
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145 /* Symbol indicating status of process.
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146 This may be a symbol: run, stop, exit, signal */
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147 Lisp_Object status_symbol;
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148
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149
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150 /* Exit code if process has terminated,
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151 signal which stopped/interrupted process
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152 or 0 if process is running */
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153 int exit_code;
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154 /* Number of this process */
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155 /* Non-false if process has exited and "dumped core" on its way down */
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156 char core_dumped;
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157 /* Descriptor by which we read from this process. -1 for dead process */
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158 int infd;
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159 /* Descriptor by which we write to this process. -1 for dead process */
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160 int outfd;
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161 /* Descriptor for the tty which this process is using.
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162 -1 if we didn't record it (on some systems, there's no need). */
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163 int subtty;
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164 /* Name of subprocess terminal. */
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165 Lisp_Object tty_name;
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166 /* Non-false if communicating through a pty. */
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167 char pty_flag;
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168 /* This next field is only actually used #ifdef ENERGIZE */
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169 /* if this flag is not NIL, then filter will do the read on the
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170 channel, rather than having a call to make_string.
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171 This only works if the filter is a subr. */
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172 char filter_does_read;
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173 /* Non-nil means kill silently if Emacs is exited. */
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174 char kill_without_query;
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175 char selected;
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176 /* Event-count of last event in which this process changed status. */
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177 volatile int tick;
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178 /* Event-count of last such event reported. */
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179 int update_tick;
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180 /* streams used in input and output */
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181 Lisp_Object instream;
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182 Lisp_Object outstream;
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183 /* The actual filedesc stream used for output; may be different
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184 than OUTSTREAM under Mule */
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185 Lisp_Object filedesc_stream;
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186 };
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187
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188 static Lisp_Object mark_process (Lisp_Object, void (*) (Lisp_Object));
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189 static void print_process (Lisp_Object, Lisp_Object, int);
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190 static void finalize_process (void *, int);
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191 DEFINE_LRECORD_IMPLEMENTATION ("process", process,
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192 mark_process, print_process, finalize_process,
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193 0, 0, struct Lisp_Process);
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194
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195 static Lisp_Object
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196 mark_process (Lisp_Object obj, void (*markobj) (Lisp_Object))
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197 {
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198 struct Lisp_Process *proc = XPROCESS (obj);
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199 ((markobj) (proc->name));
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200 ((markobj) (proc->command));
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201 ((markobj) (proc->filter));
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202 ((markobj) (proc->sentinel));
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203 ((markobj) (proc->buffer));
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204 ((markobj) (proc->mark));
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205 ((markobj) (proc->pid));
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206 ((markobj) (proc->tty_name));
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207 ((markobj) (proc->instream));
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208 ((markobj) (proc->outstream));
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209 ((markobj) (proc->filedesc_stream));
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210 return (proc->status_symbol);
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211 }
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212
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213 static void
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214 print_process (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
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215 {
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216 struct Lisp_Process *proc = XPROCESS (obj);
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217
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218 if (print_readably)
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219 error ("printing unreadable object #<process %s>",
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220 string_data (XSTRING (proc->name)));
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221
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222 if (!escapeflag)
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223 {
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224 print_internal (proc->name, printcharfun, 0);
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225 }
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226 else
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227 {
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228 int netp = network_connection_p (obj);
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229 write_c_string (((netp) ? GETTEXT ("#<network connection ") :
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230 GETTEXT ("#<process ")), printcharfun);
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231 print_internal (proc->name, printcharfun, 1);
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232 write_c_string (((netp) ? " " : " pid "), printcharfun);
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233 print_internal (proc->pid, printcharfun, 1);
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234 write_c_string (" state:", printcharfun);
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235 print_internal (proc->status_symbol, printcharfun, 1);
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236 write_c_string (">", printcharfun);
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237 }
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238 }
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239
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240 #ifdef HAVE_WINDOW_SYSTEM
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241 extern void debug_process_finalization (struct Lisp_Process *p);
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242 #endif /* HAVE_WINDOW_SYSTEM */
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243
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244 static void
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245 finalize_process (void *header, int for_disksave)
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246 {
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247 if (for_disksave) return; /* hmm, what would this do anyway? */
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248 /* #### this probably needs to be tied into the tty event loop */
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249 /* #### when there is one */
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250 #ifdef HAVE_WINDOW_SYSTEM
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251 {
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252 struct Lisp_Process *p = (struct Lisp_Process *) header;
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253 debug_process_finalization (p);
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254 }
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255 #endif /* HAVE_WINDOW_SYSTEM */
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256 }
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257
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258
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259 /************************************************************************/
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260 /* basic process accessors */
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261 /************************************************************************/
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262
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263 static SIGTYPE
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264 close_safely_handler (int signo)
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265 {
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266 EMACS_REESTABLISH_SIGNAL (signo, close_safely_handler);
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267 SIGRETURN;
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268 }
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269
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270 static void
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271 close_safely (int fd)
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272 {
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273 stop_interrupts ();
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274 signal (SIGALRM, close_safely_handler);
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275 alarm (1);
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276 close (fd);
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277 alarm (0);
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278 start_interrupts ();
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279 }
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280
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281 static void
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282 close_descriptor_pair (int in, int out)
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283 {
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284 if (in >= 0)
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285 close (in);
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286 if (out != in && out >= 0)
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287 close (out);
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288 }
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289
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290 /* Close all descriptors currently in use for communication
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291 with subprocess. This is used in a newly-forked subprocess
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292 to get rid of irrelevant descriptors. */
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293
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294 void
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295 close_process_descs (void)
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296 {
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297 #ifndef WINDOWSNT
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298 int i;
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299 for (i = 0; i < MAXDESC; i++)
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300 {
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301 Lisp_Object process;
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302 process = descriptor_to_process[i];
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303 if (!NILP (process))
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304 {
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305 close_descriptor_pair (XPROCESS (process)->infd,
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306 XPROCESS (process)->outfd);
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307 }
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308 }
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309 #endif
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310 }
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311
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312 void
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313 get_process_file_descriptors (struct Lisp_Process *p, int *infd,
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314 int *outfd)
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315 {
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316 if (! p) abort ();
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317 /* the cast of MAXDESC is needed for some versions of Linux */
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318 assert (p->infd >= -1 && p->infd < ((int) (MAXDESC)));
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319 assert (p->outfd >= -1 && p->outfd < ((int) (MAXDESC)));
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320 *infd = p->infd;
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321 *outfd = p->outfd;
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322 }
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323
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324 struct Lisp_Process *
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325 get_process_from_input_descriptor (int infd)
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326 {
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327 Lisp_Object proc;
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328
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329 if ((infd < 0) || (infd >= ((int) (MAXDESC)))) abort ();
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330 proc = descriptor_to_process[infd];
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331 if (NILP (proc))
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332 return 0;
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333 else
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334 return XPROCESS (proc);
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335 }
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336
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337 int
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338 get_process_selected_p (struct Lisp_Process *p)
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339 {
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340 return p->selected;
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341 }
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342
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343 void
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344 set_process_selected_p (struct Lisp_Process *p, int selected_p)
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345 {
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346 p->selected = !!selected_p;
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347 }
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348
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349 #ifdef HAVE_SOCKETS
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350 int
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351 network_connection_p (Lisp_Object process)
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352 {
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353 return (GC_CONSP (XPROCESS (process)->pid));
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354 }
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355 #endif
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356
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357 int
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358 connected_via_filedesc_p (struct Lisp_Process *p)
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359 {
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360 return p->connected_via_filedesc_p;
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361 }
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362
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363 DEFUN ("processp", Fprocessp, Sprocessp, 1, 1, 0 /*
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364 Return t if OBJECT is a process.
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365 */ )
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366 (obj)
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367 Lisp_Object obj;
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368 {
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369 return ((PROCESSP (obj)) ? Qt : Qnil);
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370 }
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371
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372 DEFUN ("process-list", Fprocess_list, Sprocess_list, 0, 0, 0 /*
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373 Return a list of all processes.
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374 */ )
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375 ()
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376 {
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377 return Fcopy_sequence (Vprocess_list);
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378 }
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379
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380 DEFUN ("get-process", Fget_process, Sget_process, 1, 1, 0 /*
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381 Return the process named NAME, or nil if there is none.
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382 */ )
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383 (name)
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384 Lisp_Object name;
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385 {
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386 Lisp_Object tail;
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387
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388 if (GC_PROCESSP (name))
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389 return (name);
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390
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391 if (!gc_in_progress)
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392 /* this only gets called during GC when emacs is going away as a result
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393 of a signal or crash. */
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394 CHECK_STRING (name);
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395
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396 for (tail = Vprocess_list; GC_CONSP (tail); tail = XCDR (tail))
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397 {
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398 Lisp_Object proc = XCAR (tail);
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399 QUIT;
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400 if (!NILP (Fequal (name, XPROCESS (proc)->name)))
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401 return (XCAR (tail));
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402 }
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403 return Qnil;
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404 }
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405
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406 DEFUN ("get-buffer-process", Fget_buffer_process, Sget_buffer_process, 1, 1, 0 /*
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407 Return the (or, a) process associated with BUFFER.
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408 BUFFER may be a buffer or the name of one.
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409 */ )
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410 (name)
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411 Lisp_Object name;
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412 {
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413 Lisp_Object buf, tail, proc;
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414
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415 if (GC_NILP (name)) return Qnil;
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416 buf = Fget_buffer (name);
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417 if (GC_NILP (buf)) return Qnil;
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418
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419 #ifdef ENERGIZE
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420 {
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421 Lisp_Object p = energize_get_buffer_process (buf);
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|
|
422 if (!GC_NILP (p)) return p;
|
|
|
423 }
|
|
|
424 #endif
|
|
|
425
|
|
|
426 for (tail = Vprocess_list; GC_CONSP (tail); tail = XCDR (tail))
|
|
|
427 {
|
|
|
428 /* jwz: do not quit here - it isn't necessary, as there is no way for
|
|
|
429 Vprocess_list to get circular or overwhelmingly long, and this
|
|
|
430 function is called from layout_mode_element under redisplay. */
|
|
|
431 /* QUIT; */
|
|
|
432 proc = XCAR (tail);
|
|
|
433 if (GC_PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf))
|
|
|
434 return proc;
|
|
|
435 }
|
|
|
436 return Qnil;
|
|
|
437 }
|
|
|
438
|
|
|
439 /* This is how commands for the user decode process arguments. It
|
|
|
440 accepts a process, a process name, a buffer, a buffer name, or nil.
|
|
|
441 Buffers denote the first process in the buffer, and nil denotes the
|
|
|
442 current buffer. */
|
|
|
443
|
|
|
444 static Lisp_Object
|
|
|
445 get_process (Lisp_Object name)
|
|
|
446 {
|
|
|
447 Lisp_Object proc;
|
|
|
448
|
|
|
449 #ifdef I18N3
|
|
|
450 /* #### Look more closely into translating process names. */
|
|
|
451 #endif
|
|
|
452
|
|
|
453 /* This may be called during a GC from process_send_signal() from
|
|
|
454 kill_buffer_processes() if emacs decides to abort(). */
|
|
|
455 if (GC_PROCESSP (name))
|
|
|
456 return name;
|
|
|
457
|
|
|
458 if (GC_NILP (name))
|
|
|
459 proc = Fget_buffer_process (Fcurrent_buffer ());
|
|
|
460 else
|
|
|
461 {
|
|
|
462 proc = Fget_process (name);
|
|
|
463 if (GC_NILP (proc))
|
|
|
464 proc = Fget_buffer_process (Fget_buffer (name));
|
|
|
465 }
|
|
|
466
|
|
|
467 if (!GC_NILP (proc))
|
|
|
468 return proc;
|
|
|
469
|
|
|
470 if (GC_NILP (name))
|
|
|
471 error ("Current buffer has no process");
|
|
|
472 else
|
|
|
473 error ("Process %s does not exist", string_data (XSTRING (name)));
|
|
|
474 /* NOTREACHED */
|
|
|
475 return Qnil; /* warning suppression */
|
|
|
476 }
|
|
|
477
|
|
|
478 DEFUN ("process-id", Fprocess_id, Sprocess_id, 1, 1, 0 /*
|
|
|
479 Return the process id of PROCESS.
|
|
|
480 This is the pid of the Unix process which PROCESS uses or talks to.
|
|
|
481 For a network connection, this value is a cons of
|
|
|
482 (foreign-network-port . foreign-host-name).
|
|
|
483 */ )
|
|
|
484 (proc)
|
|
|
485 Lisp_Object proc;
|
|
|
486 {
|
|
|
487 Lisp_Object pid;
|
|
|
488 CHECK_PROCESS (proc);
|
|
|
489
|
|
|
490 pid = XPROCESS (proc)->pid;
|
|
|
491 if (network_connection_p (proc))
|
|
|
492 /* return (Qnil); */
|
|
|
493 return (Fcons (Fcar (pid), Fcdr (pid)));
|
|
|
494 else
|
|
|
495 return (pid);
|
|
|
496 }
|
|
|
497
|
|
|
498 DEFUN ("process-name", Fprocess_name, Sprocess_name, 1, 1, 0 /*
|
|
|
499 Return the name of PROCESS, as a string.
|
|
|
500 This is the name of the program invoked in PROCESS,
|
|
|
501 possibly modified to make it unique among process names.
|
|
|
502 */ )
|
|
|
503 (proc)
|
|
|
504 Lisp_Object proc;
|
|
|
505 {
|
|
|
506 CHECK_PROCESS (proc);
|
|
|
507 return XPROCESS (proc)->name;
|
|
|
508 }
|
|
|
509
|
|
|
510 DEFUN ("process-command", Fprocess_command, Sprocess_command, 1, 1, 0 /*
|
|
|
511 Return the command that was executed to start PROCESS.
|
|
|
512 This is a list of strings, the first string being the program executed
|
|
|
513 and the rest of the strings being the arguments given to it.
|
|
|
514 */ )
|
|
|
515 (proc)
|
|
|
516 Lisp_Object proc;
|
|
|
517 {
|
|
|
518 CHECK_PROCESS (proc);
|
|
|
519 return XPROCESS (proc)->command;
|
|
|
520 }
|
|
|
521
|
|
|
522
|
|
|
523 /************************************************************************/
|
|
|
524 /* creating a process */
|
|
|
525 /************************************************************************/
|
|
|
526
|
|
|
527 static Lisp_Object
|
|
|
528 make_process_internal (Lisp_Object name)
|
|
|
529 {
|
|
|
530 Lisp_Object val, name1;
|
|
|
531 int i;
|
|
|
532 struct Lisp_Process *p
|
|
|
533 = alloc_lcrecord (sizeof (struct Lisp_Process), lrecord_process);
|
|
|
534
|
|
|
535 /* If name is already in use, modify it until it is unused. */
|
|
|
536 name1 = name;
|
|
|
537 for (i = 1; ; i++)
|
|
|
538 {
|
|
|
539 char suffix[10];
|
|
|
540 Lisp_Object tem = Fget_process (name1);
|
|
|
541 if (NILP (tem))
|
|
|
542 break;
|
|
|
543 sprintf (suffix, "<%d>", i);
|
|
|
544 name1 = concat2 (name, build_string (suffix));
|
|
|
545 }
|
|
|
546 name = name1;
|
|
|
547 p->name = name;
|
|
|
548
|
|
|
549 p->command = Qnil;
|
|
|
550 p->filter = Qnil;
|
|
|
551 p->sentinel = Qnil;
|
|
|
552 p->buffer = Qnil;
|
|
|
553 p->mark = Fmake_marker ();
|
|
|
554 p->pid = Qnil;
|
|
|
555 p->status_symbol = Qrun;
|
|
|
556 p->connected_via_filedesc_p = 0;
|
|
|
557 p->exit_code = 0;
|
|
|
558 p->core_dumped = 0;
|
|
|
559 p->infd = -1;
|
|
|
560 p->outfd = -1;
|
|
|
561 p->subtty = -1;
|
|
|
562 p->tty_name = Qnil;
|
|
|
563 p->pty_flag = 0;
|
|
|
564 p->filter_does_read = 0;
|
|
|
565 p->kill_without_query = 0;
|
|
|
566 p->selected = 0;
|
|
|
567 p->tick = 0;
|
|
|
568 p->update_tick = 0;
|
|
|
569 p->instream = Qnil;
|
|
|
570 p->outstream = Qnil;
|
|
|
571
|
|
|
572 XSETPROCESS (val, p);
|
|
|
573
|
|
|
574 Vprocess_list = Fcons (val, Vprocess_list);
|
|
|
575 return (val);
|
|
|
576 }
|
|
|
577
|
|
|
578 #ifdef HAVE_PTYS
|
|
|
579
|
|
|
580 /* Open an available pty, returning a file descriptor.
|
|
|
581 Return -1 on failure.
|
|
|
582 The file name of the terminal corresponding to the pty
|
|
|
583 is left in the variable pty_name. */
|
|
|
584
|
|
|
585 static int
|
|
|
586 allocate_pty (void)
|
|
|
587 {
|
|
|
588 struct stat stb;
|
|
|
589 int c, i;
|
|
|
590 int fd;
|
|
|
591
|
|
|
592 /* Some systems name their pseudoterminals so that there are gaps in
|
|
|
593 the usual sequence - for example, on HP9000/S700 systems, there
|
|
|
594 are no pseudoterminals with names ending in 'f'. So we wait for
|
|
|
595 three failures in a row before deciding that we've reached the
|
|
|
596 end of the ptys. */
|
|
|
597 int failed_count = 0;
|
|
|
598
|
|
|
599 #ifdef PTY_ITERATION
|
|
|
600 PTY_ITERATION
|
|
|
601 #else
|
|
|
602 for (c = FIRST_PTY_LETTER; c <= 'z'; c++)
|
|
|
603 for (i = 0; i < 16; i++)
|
|
|
604 #endif
|
|
|
605 {
|
|
|
606 #ifdef PTY_NAME_SPRINTF
|
|
|
607 PTY_NAME_SPRINTF
|
|
|
608 #else
|
|
|
609 sprintf (pty_name, "/dev/pty%c%x", c, i);
|
|
|
610 #endif /* no PTY_NAME_SPRINTF */
|
|
|
611
|
|
|
612 #ifdef PTY_OPEN
|
|
|
613 PTY_OPEN;
|
|
|
614 #else /* no PTY_OPEN */
|
|
|
615 #ifdef IRIS
|
|
|
616 /* Unusual IRIS code */
|
|
|
617 *ptyv = open ("/dev/ptc", O_RDWR | O_NDELAY, 0);
|
|
|
618 if (fd < 0)
|
|
|
619 return -1;
|
|
|
620 if (fstat (fd, &stb) < 0)
|
|
|
621 return -1;
|
|
|
622 #else /* not IRIS */
|
|
|
623 if (stat (pty_name, &stb) < 0)
|
|
|
624 {
|
|
|
625 failed_count++;
|
|
|
626 if (failed_count >= 3)
|
|
|
627 return -1;
|
|
|
628 }
|
|
|
629 else
|
|
|
630 failed_count = 0;
|
|
|
631 #ifdef O_NONBLOCK
|
|
|
632 fd = open (pty_name, O_RDWR | O_NONBLOCK, 0);
|
|
|
633 #else
|
|
|
634 fd = open (pty_name, O_RDWR | O_NDELAY, 0);
|
|
|
635 #endif
|
|
|
636 #endif /* not IRIS */
|
|
|
637 #endif /* no PTY_OPEN */
|
|
|
638
|
|
|
639 if (fd >= 0)
|
|
|
640 {
|
|
|
641 /* check to make certain that both sides are available
|
|
|
642 this avoids a nasty yet stupid bug in rlogins */
|
|
|
643 #ifdef PTY_TTY_NAME_SPRINTF
|
|
|
644 PTY_TTY_NAME_SPRINTF
|
|
|
645 #else
|
|
|
646 sprintf (pty_name, "/dev/tty%c%x", c, i);
|
|
|
647 #endif /* no PTY_TTY_NAME_SPRINTF */
|
|
|
648 #ifndef UNIPLUS
|
|
|
649 if (access (pty_name, 6) != 0)
|
|
|
650 {
|
|
|
651 close (fd);
|
|
|
652 #if !defined(IRIS) && !defined(__sgi)
|
|
|
653 continue;
|
|
|
654 #else
|
|
|
655 return -1;
|
|
|
656 #endif /* IRIS */
|
|
|
657 }
|
|
|
658 #endif /* not UNIPLUS */
|
|
|
659 setup_pty (fd);
|
|
|
660 return fd;
|
|
|
661 }
|
|
|
662 }
|
|
|
663 return -1;
|
|
|
664 }
|
|
|
665 #endif /* HAVE_PTYS */
|
|
|
666
|
|
|
667 static int
|
|
|
668 create_bidirectional_pipe (int *inchannel, int *outchannel,
|
|
|
669 volatile int *forkin, volatile int *forkout)
|
|
|
670 {
|
|
|
671 int sv[2];
|
|
|
672
|
|
|
673 #ifdef SKTPAIR
|
|
|
674 if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv) < 0)
|
|
|
675 return -1;
|
|
|
676 *outchannel = *inchannel = sv[0];
|
|
|
677 *forkout = *forkin = sv[1];
|
|
|
678 #else /* not SKTPAIR */
|
|
|
679 #ifdef WINDOWSNT
|
|
|
680 pipe_with_inherited_out (sv);
|
|
|
681 *inchannel = sv[0];
|
|
|
682 *forkout = sv[1];
|
|
|
683
|
|
|
684 pipe_with_inherited_in (sv);
|
|
|
685 *forkin = sv[0];
|
|
|
686 *outchannel = sv[1];
|
|
|
687 #else /* not WINDOWSNT */
|
|
|
688 int temp;
|
|
|
689 temp = pipe (sv);
|
|
|
690 if (temp < 0) return -1;
|
|
|
691 *inchannel = sv[0];
|
|
|
692 *forkout = sv[1];
|
|
|
693 temp = pipe (sv);
|
|
|
694 if (temp < 0) return -1;
|
|
|
695 *outchannel = sv[1];
|
|
|
696 *forkin = sv[0];
|
|
|
697 #endif /* not WINDOWSNT */
|
|
|
698 #endif /* not SKTPAIR */
|
|
|
699 return 0;
|
|
|
700 }
|
|
|
701
|
|
|
702 #ifndef VMS /* VMS version of this function is in vmsproc.c. */
|
|
|
703
|
|
|
704 static Bufbyte
|
|
|
705 get_eof_char (struct Lisp_Process *p)
|
|
|
706 {
|
|
|
707 /* Figure out the eof character for the outfd of the given process.
|
|
|
708 * The following code is similar to that in process_send_signal, and
|
|
|
709 * should probably be merged with that code somehow. */
|
|
|
710
|
|
|
711 #ifdef HAVE_TERMIOS
|
|
|
712 struct termios t;
|
|
|
713 tcgetattr (p->outfd, &t);
|
|
|
714 if (strlen ((CONST char *) t.c_cc) < (unsigned int) (VEOF + 1))
|
|
|
715 return (Bufbyte) '\004';
|
|
|
716 else
|
|
|
717 return (Bufbyte) t.c_cc[VEOF];
|
|
|
718 #else /* ! HAVE_TERMIOS */
|
|
|
719 /* On Berkeley descendants, the following IOCTL's retrieve the
|
|
|
720 current control characters. */
|
|
|
721 #if defined (TIOCGETC)
|
|
|
722 struct tchars c;
|
|
|
723 ioctl (p->outfd, TIOCGETC, &c);
|
|
|
724 return (Bufbyte) c.t_eofc;
|
|
|
725 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
|
|
|
726 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
|
|
|
727 characters. */
|
|
|
728 #ifdef TCGETA
|
|
|
729 struct termio t;
|
|
|
730 ioctl (p->outfd, TCGETA, &t);
|
|
|
731 if (strlen ((CONST char *) t.c_cc) < (unsigned int) (VINTR + 1))
|
|
|
732 return (Bufbyte) '\004';
|
|
|
733 else
|
|
|
734 return (Bufbyte) t.c_cc[VINTR];
|
|
|
735 #else /* ! defined (TCGETA) */
|
|
|
736 /* Rather than complain, we'll just guess ^D, which is what
|
|
|
737 * earlier emacsen always used. */
|
|
|
738 return (Bufbyte) '\004';
|
|
|
739 #endif /* ! defined (TCGETA) */
|
|
|
740 #endif /* ! defined (TIOCGETC) */
|
|
|
741 #endif /* ! defined (HAVE_TERMIOS) */
|
|
|
742 }
|
|
|
743
|
|
|
744 static int
|
|
|
745 get_pty_max_bytes (struct Lisp_Process *p)
|
|
|
746 {
|
|
|
747 int pty_max_bytes;
|
|
|
748
|
|
|
749 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
|
|
|
750 pty_max_bytes = fpathconf (p->outfd, _PC_MAX_CANON);
|
|
|
751 if (pty_max_bytes < 0)
|
|
|
752 pty_max_bytes = 250;
|
|
|
753 #else
|
|
|
754 pty_max_bytes = 250;
|
|
|
755 #endif
|
|
|
756 /* Deduct one, to leave space for the eof. */
|
|
|
757 pty_max_bytes--;
|
|
|
758
|
|
|
759 return pty_max_bytes;
|
|
|
760 }
|
|
|
761
|
|
|
762 static void
|
|
|
763 init_process_fds (struct Lisp_Process *p, int in, int out)
|
|
|
764 {
|
|
|
765 p->infd = in;
|
|
|
766 p->outfd = out;
|
|
|
767 p->instream = make_filedesc_input_stream (in, 0, -1, 0);
|
|
|
768 p->outstream = make_filedesc_output_stream (out, 0, -1,
|
|
|
769 LSTR_BLOCKED_OK
|
|
|
770 | (p->pty_flag ?
|
|
|
771 LSTR_PTY_FLUSHING : 0));
|
|
|
772 p->filedesc_stream = p->outstream;
|
|
|
773 if (p->pty_flag)
|
|
|
774 {
|
|
|
775 Bufbyte eof_char = get_eof_char (p);
|
|
|
776 int pty_max_bytes = get_pty_max_bytes (p);
|
|
|
777 filedesc_stream_set_pty_flushing (XLSTREAM (p->outstream),
|
|
|
778 pty_max_bytes, eof_char);
|
|
|
779 }
|
|
|
780 }
|
|
|
781
|
|
|
782 static void
|
|
|
783 create_process (Lisp_Object process,
|
|
|
784 char **new_argv, CONST char *current_dir)
|
|
|
785 {
|
|
|
786 /* This function rewritten by wing@666.com. */
|
|
|
787
|
|
|
788 int pid, inchannel, outchannel;
|
|
|
789 /* Use volatile to protect variables from being clobbered by longjmp. */
|
|
|
790 volatile int forkin, forkout;
|
|
|
791 volatile int pty_flag = 0;
|
|
|
792 char **env;
|
|
|
793 struct Lisp_Process *p = XPROCESS (process);
|
|
|
794
|
|
|
795 env = environ;
|
|
|
796
|
|
|
797 inchannel = outchannel = forkin = forkout = -1;
|
|
|
798
|
|
|
799 #ifdef HAVE_PTYS
|
|
|
800 if (!NILP (Vprocess_connection_type))
|
|
|
801 {
|
|
|
802 /* find a new pty, open the master side, return the opened
|
|
|
803 file handle, and store the name of the corresponding slave
|
|
|
804 side in global variable pty_name. */
|
|
|
805 outchannel = inchannel = allocate_pty ();
|
|
|
806 }
|
|
|
807
|
|
|
808 if (inchannel >= 0)
|
|
|
809 {
|
|
|
810 /* You're "supposed" to now open the slave in the child.
|
|
|
811 On some systems, we can open it here; this allows for
|
|
|
812 better error checking. */
|
|
|
813 #ifndef USG
|
|
|
814 /* On USG systems it does not work to open the pty's tty here
|
|
|
815 and then close and reopen it in the child. */
|
|
|
816 #ifdef O_NOCTTY
|
|
|
817 /* Don't let this terminal become our controlling terminal
|
|
|
818 (in case we don't have one). */
|
|
|
819 forkout = forkin = open (pty_name, O_RDWR | O_NOCTTY, 0);
|
|
|
820 #else
|
|
|
821 forkout = forkin = open (pty_name, O_RDWR, 0);
|
|
|
822 #endif
|
|
|
823 if (forkin < 0)
|
|
|
824 goto io_failure;
|
|
|
825 #endif /* not USG */
|
|
|
826 p->pty_flag = pty_flag = 1;
|
|
|
827 }
|
|
|
828 else
|
|
|
829 #endif /* HAVE_PTYS */
|
|
|
830 if (create_bidirectional_pipe (&inchannel, &outchannel,
|
|
|
831 &forkin, &forkout) < 0)
|
|
|
832 goto io_failure;
|
|
|
833
|
|
|
834 #if 0
|
|
|
835 /* Replaced by close_process_descs */
|
|
|
836 set_exclusive_use (inchannel);
|
|
|
837 set_exclusive_use (outchannel);
|
|
|
838 #endif
|
|
|
839
|
|
|
840 set_descriptor_non_blocking (inchannel);
|
|
|
841
|
|
|
842 /* Record this as an active process, with its channels.
|
|
|
843 As a result, child_setup will close Emacs's side of the pipes. */
|
|
|
844 descriptor_to_process[inchannel] = process;
|
|
|
845 init_process_fds (p, inchannel, outchannel);
|
|
|
846 /* Record the tty descriptor used in the subprocess. */
|
|
|
847 p->subtty = forkin;
|
|
|
848 p->status_symbol = Qrun;
|
|
|
849 p->exit_code = 0;
|
|
|
850
|
|
|
851 {
|
|
|
852 /* child_setup must clobber environ on systems with true vfork.
|
|
|
853 Protect it from permanent change. */
|
|
|
854 char **save_environ = environ;
|
|
|
855
|
|
|
856 #ifdef EMACS_BTL
|
|
|
857 /* when performance monitoring is on, turn it off before the vfork(),
|
|
|
858 as the child has no handler for the signal -- when back in the
|
|
|
859 parent process, turn it back on if it was really on when you "turned
|
|
|
860 it off" */
|
|
|
861 int logging_on = cadillac_stop_logging (); /* #### rename me */
|
|
|
862 #endif
|
|
|
863
|
|
|
864 #ifndef WINDOWSNT
|
|
|
865 pid = vfork ();
|
|
|
866 if (pid == 0)
|
|
|
867 #endif /* not WINDOWSNT */
|
|
|
868 {
|
|
|
869 /**** Now we're in the child process ****/
|
|
|
870 int xforkin = forkin;
|
|
|
871 int xforkout = forkout;
|
|
|
872
|
|
|
873 if (!pty_flag)
|
|
|
874 EMACS_SEPARATE_PROCESS_GROUP ();
|
|
|
875 #ifdef HAVE_PTYS
|
|
|
876 else
|
|
|
877 {
|
|
|
878 /* Disconnect the current controlling terminal, pursuant to
|
|
|
879 making the pty be the controlling terminal of the process.
|
|
|
880 Also put us in our own process group. */
|
|
|
881
|
|
|
882 disconnect_controlling_terminal ();
|
|
|
883
|
|
|
884 /* Open the pty connection and make the pty's terminal
|
|
|
885 our controlling terminal.
|
|
|
886
|
|
|
887 On systems with TIOCSCTTY, we just use it to set
|
|
|
888 the controlling terminal. On other systems, the
|
|
|
889 first TTY we open becomes the controlling terminal.
|
|
|
890 So, we end up with four possibilities:
|
|
|
891
|
|
|
892 (1) on USG and TIOCSCTTY systems, we open the pty
|
|
|
893 and use TIOCSCTTY.
|
|
|
894 (2) on other USG systems, we just open the pty.
|
|
|
895 (3) on non-USG systems with TIOCSCTTY, we
|
|
|
896 just use TIOCSCTTY. (On non-USG systems, we
|
|
|
897 already opened the pty in the parent process.)
|
|
|
898 (4) on non-USG systems without TIOCSCTTY, we
|
|
|
899 close the pty and reopen it.
|
|
|
900
|
|
|
901 This would be cleaner if we didn't open the pty
|
|
|
902 in the parent process, but doing it that way
|
|
|
903 makes it possible to trap error conditions.
|
|
|
904 It's harder to convey an error from the child
|
|
|
905 process, and I don't feel like messing with
|
|
|
906 this now. */
|
|
|
907
|
|
|
908 /* There was some weirdo, probably wrong,
|
|
|
909 conditionalization on RTU and UNIPLUS here.
|
|
|
910 I deleted it. So sue me. */
|
|
|
911
|
|
|
912 /* SunOS has TIOCSCTTY but the close/open method
|
|
|
913 also works. */
|
|
|
914
|
|
|
915 # if defined (USG) || !defined (TIOCSCTTY)
|
|
|
916 /* Now close the pty (if we had it open) and reopen it.
|
|
|
917 This makes the pty the controlling terminal of the
|
|
|
918 subprocess. */
|
|
|
919 /* I wonder if close (open (pty_name, ...)) would work? */
|
|
|
920 if (xforkin >= 0)
|
|
|
921 close (xforkin);
|
|
|
922 xforkout = xforkin = open (pty_name, O_RDWR, 0);
|
|
|
923 if (xforkin < 0)
|
|
|
924 {
|
|
|
925 write (1, "Couldn't open the pty terminal ", 31);
|
|
|
926 write (1, pty_name, strlen (pty_name));
|
|
|
927 write (1, "\n", 1);
|
|
|
928 _exit (1);
|
|
|
929 }
|
|
|
930 # endif /* USG or not TIOCSCTTY */
|
|
|
931
|
|
|
932 /* Miscellaneous setup required for some systems.
|
|
|
933 Must be done before using tc* functions on xforkin.
|
|
|
934 This guarantees that isatty(xforkin) is true. */
|
|
|
935
|
|
|
936 # ifdef SETUP_SLAVE_PTY
|
|
|
937 SETUP_SLAVE_PTY;
|
|
|
938 # endif /* SETUP_SLAVE_PTY */
|
|
|
939
|
|
|
940 # ifdef TIOCSCTTY
|
|
|
941 /* We ignore the return value
|
|
|
942 because faith@cs.unc.edu says that is necessary on Linux. */
|
|
|
943 assert (isatty (xforkin));
|
|
|
944 ioctl (xforkin, TIOCSCTTY, 0);
|
|
|
945 # endif /* TIOCSCTTY */
|
|
|
946
|
|
|
947 /* Change the line discipline. */
|
|
|
948
|
|
|
949 # if defined (HAVE_TERMIOS) && defined (LDISC1)
|
|
|
950 {
|
|
|
951 struct termios t;
|
|
|
952 assert (isatty (xforkin));
|
|
|
953 tcgetattr (xforkin, &t);
|
|
|
954 t.c_lflag = LDISC1;
|
|
|
955 if (tcsetattr (xforkin, TCSANOW, &t) < 0)
|
|
|
956 perror ("create_process/tcsetattr LDISC1 failed\n");
|
|
|
957 }
|
|
|
958 # elif defined (NTTYDISC) && defined (TIOCSETD)
|
|
|
959 {
|
|
|
960 /* Use new line discipline. TIOCSETD is accepted and
|
|
|
961 ignored on Sys5.4 systems with ttcompat. */
|
|
|
962 int ldisc = NTTYDISC;
|
|
|
963 assert (isatty (xforkin));
|
|
|
964 ioctl (xforkin, TIOCSETD, &ldisc);
|
|
|
965 }
|
|
|
966 # endif /* TIOCSETD & NTTYDISC */
|
|
|
967
|
|
|
968 /* Make our process group be the foreground group
|
|
|
969 of our new controlling terminal. */
|
|
|
970
|
|
|
971 {
|
|
|
972 int piddly = EMACS_GET_PROCESS_GROUP ();
|
|
|
973 EMACS_SET_TTY_PROCESS_GROUP (xforkin, &piddly);
|
|
|
974 }
|
|
|
975
|
|
|
976 # ifdef AIX
|
|
|
977 /* On AIX, we've disabled SIGHUP above once we start a
|
|
|
978 child on a pty. Now reenable it in the child, so it
|
|
|
979 will die when we want it to. */
|
|
|
980 signal (SIGHUP, SIG_DFL);
|
|
|
981 # endif /* AIX */
|
|
|
982 }
|
|
|
983 #endif /* HAVE_PTYS */
|
|
|
984
|
|
|
985 signal (SIGINT, SIG_DFL);
|
|
|
986 signal (SIGQUIT, SIG_DFL);
|
|
|
987
|
|
|
988 #ifndef MSDOS
|
|
|
989 if (pty_flag)
|
|
|
990 {
|
|
|
991 /* Set up the terminal characteristics of the pty. */
|
|
|
992 child_setup_tty (xforkout);
|
|
|
993 }
|
|
|
994
|
|
|
995 #ifdef WINDOWSNT
|
|
|
996 pid = child_setup (xforkin, xforkout, xforkout,
|
|
|
997 new_argv, current_dir);
|
|
|
998 #else /* not WINDOWSNT */
|
|
|
999 child_setup (xforkin, xforkout, xforkout, new_argv, current_dir);
|
|
|
1000 #endif /* not WINDOWSNT */
|
|
|
1001 #endif /* not MSDOS */
|
|
|
1002 }
|
|
|
1003 #ifdef EMACS_BTL
|
|
|
1004 else if (logging_on)
|
|
|
1005 cadillac_start_logging (); /* #### rename me */
|
|
|
1006 #endif
|
|
|
1007
|
|
|
1008 environ = save_environ;
|
|
|
1009 }
|
|
|
1010
|
|
|
1011 if (pid < 0)
|
|
|
1012 {
|
|
|
1013 close_descriptor_pair (forkin, forkout);
|
|
|
1014 report_file_error ("Doing vfork", Qnil);
|
|
|
1015 }
|
|
|
1016
|
|
|
1017 p->pid = make_int (pid);
|
|
|
1018 /* p->subtty = -1; */
|
|
|
1019
|
|
|
1020 #ifdef WINDOWSNT
|
|
|
1021 register_child (pid, inchannel);
|
|
|
1022 #endif /* WINDOWSNT */
|
|
|
1023
|
|
|
1024 /* If the subfork execv fails, and it exits,
|
|
|
1025 this close hangs. I don't know why.
|
|
|
1026 So have an interrupt jar it loose. */
|
|
|
1027 if (forkin >= 0)
|
|
|
1028 close_safely (forkin);
|
|
|
1029 if (forkin != forkout && forkout >= 0)
|
|
|
1030 close (forkout);
|
|
|
1031
|
|
|
1032 #ifdef HAVE_PTYS
|
|
|
1033 if (pty_flag)
|
|
|
1034 XPROCESS (process)->tty_name = build_string (pty_name);
|
|
|
1035 else
|
|
|
1036 #endif
|
|
|
1037 XPROCESS (process)->tty_name = Qnil;
|
|
|
1038
|
|
|
1039 /* Notice that SIGCHLD was not blocked. (This is not possible on
|
|
|
1040 some systems.) No biggie if SIGCHLD occurs right around the
|
|
|
1041 time that this call happens, because SIGCHLD() does not actually
|
|
|
1042 deselect the process (that doesn't occur until the next time
|
|
|
1043 we're waiting for an event, when status_notify() is called). */
|
|
|
1044 event_stream_select_process (XPROCESS (process));
|
|
|
1045
|
|
|
1046 return;
|
|
|
1047
|
|
|
1048 io_failure:
|
|
|
1049 {
|
|
|
1050 int temp = errno;
|
|
|
1051 close_descriptor_pair (forkin, forkout);
|
|
|
1052 close_descriptor_pair (inchannel, outchannel);
|
|
|
1053 errno = temp;
|
|
|
1054 report_file_error ("Opening pty or pipe", Qnil);
|
|
|
1055 }
|
|
|
1056 }
|
|
|
1057 #endif /* not VMS */
|
|
|
1058
|
|
|
1059 /* This function is the unwind_protect form for Fstart_process_internal. If
|
|
|
1060 PROC doesn't have its pid set, then we know someone has signalled
|
|
|
1061 an error and the process wasn't started successfully, so we should
|
|
|
1062 remove it from the process list. */
|
|
|
1063 static void remove_process (Lisp_Object proc);
|
|
|
1064 static Lisp_Object
|
|
|
1065 start_process_unwind (Lisp_Object proc)
|
|
|
1066 {
|
|
|
1067 /* Was PROC started successfully? */
|
|
|
1068 if (EQ (XPROCESS (proc)->pid, Qnil))
|
|
|
1069 remove_process (proc);
|
|
|
1070 return Qnil;
|
|
|
1071 }
|
|
|
1072
|
|
|
1073 DEFUN ("start-process-internal", Fstart_process_internal,
|
|
|
1074 Sstart_process_internal, 3, MANY, 0 /*
|
|
|
1075 Start a program in a subprocess. Return the process object for it.
|
|
|
1076 Args are NAME BUFFER PROGRAM &rest PROGRAM-ARGS
|
|
|
1077 NAME is name for process. It is modified if necessary to make it unique.
|
|
|
1078 BUFFER is the buffer or (buffer-name) to associate with the process.
|
|
|
1079 Process output goes at end of that buffer, unless you specify
|
|
|
1080 an output stream or filter function to handle the output.
|
|
|
1081 BUFFER may be also nil, meaning that this process is not associated
|
|
|
1082 with any buffer
|
|
|
1083 Third arg is program file name. It is searched for as in the shell.
|
|
|
1084 Remaining arguments are strings to give program as arguments.
|
|
|
1085 INCODE and OUTCODE specify the coding-system objects used in input/output
|
|
|
1086 from/to the process.
|
|
|
1087 */ )
|
|
|
1088 (nargs, args)
|
|
|
1089 int nargs;
|
|
|
1090 Lisp_Object *args;
|
|
|
1091 {
|
|
|
1092 /* !!#### This function has not been Mule-ized */
|
|
|
1093 /* This function can GC */
|
|
|
1094 Lisp_Object buffer, name, program, proc, current_dir;
|
|
|
1095 Lisp_Object tem;
|
|
|
1096 int speccount = specpdl_depth ();
|
|
|
1097 #ifdef VMS
|
|
|
1098 char *new_argv;
|
|
|
1099 int len;
|
|
|
1100 #else
|
|
|
1101 char **new_argv;
|
|
|
1102 #endif
|
|
|
1103 int i;
|
|
|
1104
|
|
|
1105 buffer = args[1];
|
|
|
1106 if (!NILP (buffer))
|
|
|
1107 buffer = Fget_buffer_create (buffer);
|
|
|
1108
|
|
|
1109 CHECK_STRING (args[0]); /* name */
|
|
|
1110 CHECK_STRING (args[2]); /* program */
|
|
|
1111
|
|
|
1112 /* Make sure that the child will be able to chdir to the current
|
|
|
1113 buffer's current directory, or its unhandled equivalent. We
|
|
|
1114 can't just have the child check for an error when it does the
|
|
|
1115 chdir, since it's in a vfork.
|
|
|
1116
|
|
|
1117 We have to GCPRO around this because Fexpand_file_name and
|
|
|
1118 Funhandled_file_name_directory might call a file name handling
|
|
|
1119 function. The argument list is protected by the caller, so all
|
|
|
1120 we really have to worry about is buffer. */
|
|
|
1121 {
|
|
|
1122 struct gcpro gcpro1, gcpro2; /* Caller gc-protects args[] */
|
|
|
1123
|
|
|
1124 current_dir = current_buffer->directory;
|
|
|
1125
|
|
|
1126 GCPRO2 (buffer, current_dir);
|
|
|
1127
|
|
|
1128 current_dir =
|
|
|
1129 expand_and_dir_to_file (Funhandled_file_name_directory (current_dir),
|
|
|
1130 Qnil);
|
|
|
1131 #if 0 /* This loser breaks ange-ftp */
|
|
|
1132 if (NILP (Ffile_accessible_directory_p (current_dir)))
|
|
|
1133 report_file_error ("Setting current directory",
|
|
|
1134 list1 (current_buffer->directory));
|
|
|
1135 #endif /* 0 */
|
|
|
1136
|
|
|
1137 UNGCPRO;
|
|
|
1138 }
|
|
|
1139
|
|
|
1140 name = args[0];
|
|
|
1141 program = args[2];
|
|
|
1142
|
|
|
1143 #ifdef VMS
|
|
|
1144 /* Make a one member argv with all args concatenated
|
|
|
1145 together separated by a blank. */
|
|
|
1146 len = string_length (XSTRING (program)) + 2;
|
|
|
1147 for (i = 3; i < nargs; i++)
|
|
|
1148 {
|
|
|
1149 tem = args[i];
|
|
|
1150 CHECK_STRING (tem);
|
|
|
1151 len += string_length (XSTRING (tem)) + 1; /* count the blank */
|
|
|
1152 }
|
|
|
1153 new_argv = (char *) alloca (len);
|
|
|
1154 strcpy (new_argv, string_data (XSTRING (program)));
|
|
|
1155 for (i = 3; i < nargs; i++)
|
|
|
1156 {
|
|
|
1157 tem = args[i];
|
|
|
1158 CHECK_STRING (tem);
|
|
|
1159 strcat (new_argv, " ");
|
|
|
1160 strcat (new_argv, string_data (XSTRING (tem)));
|
|
|
1161 }
|
|
|
1162 /* Need to add code here to check for program existence on VMS */
|
|
|
1163
|
|
|
1164 #else /* not VMS */
|
|
|
1165 new_argv = (char **)
|
|
|
1166 alloca ((nargs - 1) * sizeof (char *));
|
|
|
1167
|
|
|
1168 new_argv[0] = (char *) string_data (XSTRING (program));
|
|
|
1169
|
|
|
1170 /* If program file name is not absolute, search our path for it */
|
|
|
1171 if (!IS_DIRECTORY_SEP (string_byte (XSTRING (program), 0))
|
|
|
1172 && !(string_length (XSTRING (program)) > 1
|
|
|
1173 && IS_DEVICE_SEP (string_byte (XSTRING (program), 1))))
|
|
|
1174 {
|
|
|
1175 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; /* Caller protects args[] */
|
|
|
1176 GCPRO4 (buffer, current_dir, name, program);
|
|
|
1177
|
|
|
1178 tem = Qnil;
|
|
|
1179 locate_file (Vexec_path, program, EXEC_SUFFIXES, &tem,
|
|
|
1180 X_OK);
|
|
|
1181 UNGCPRO;
|
|
|
1182 if (NILP (tem))
|
|
|
1183 report_file_error ("Searching for program", list1 (program));
|
|
|
1184 tem = Fexpand_file_name (tem, Qnil);
|
|
|
1185 new_argv[0] = (char *) string_data (XSTRING (tem));
|
|
|
1186 }
|
|
|
1187 else
|
|
|
1188 {
|
|
|
1189 if (!NILP (Ffile_directory_p (program)))
|
|
|
1190 error ("Specified program for new process is a directory");
|
|
|
1191 }
|
|
|
1192
|
|
|
1193 for (i = 3; i < nargs; i++)
|
|
|
1194 {
|
|
|
1195 tem = args[i];
|
|
|
1196 CHECK_STRING (tem);
|
|
|
1197 new_argv[i - 2] =
|
|
|
1198 (char *) string_data (XSTRING (tem));
|
|
|
1199 }
|
|
|
1200 new_argv[i - 2] = 0;
|
|
|
1201
|
|
|
1202 #endif /* not VMS */
|
|
|
1203
|
|
|
1204 proc = make_process_internal (name);
|
|
|
1205
|
|
|
1206 XPROCESS (proc)->buffer = buffer;
|
|
|
1207 XPROCESS (proc)->command = Flist (nargs - 2,
|
|
|
1208 args + 2);
|
|
|
1209
|
|
|
1210 /* Make the process marker point into the process buffer (if any). */
|
|
|
1211 if (!NILP (buffer))
|
|
|
1212 Fset_marker (XPROCESS (proc)->mark,
|
|
|
1213 make_int (BUF_ZV (XBUFFER (buffer))), buffer);
|
|
|
1214
|
|
|
1215 /* If an error occurs and we can't start the process, we want to
|
|
|
1216 remove it from the process list. This means that each error
|
|
|
1217 check in create_process doesn't need to call remove_process
|
|
|
1218 itself; it's all taken care of here. */
|
|
|
1219 record_unwind_protect (start_process_unwind, proc);
|
|
|
1220
|
|
|
1221 create_process (proc, new_argv,
|
|
|
1222 (char *) string_data (XSTRING (current_dir)));
|
|
|
1223
|
|
|
1224 return unbind_to (speccount, proc);
|
|
|
1225 }
|
|
|
1226
|
|
|
1227
|
|
|
1228 /* connect to an existing file descriptor. This is very similar to
|
|
|
1229 open-network-stream except that it assumes that the connection has
|
|
|
1230 already been initialized. It is currently used for ToolTalk
|
|
|
1231 communication. */
|
|
|
1232
|
|
|
1233 /* This function used to be visible on the Lisp level, but there is no
|
|
|
1234 real point in doing that. Here is the doc string:
|
|
|
1235
|
|
|
1236 "Connect to an existing file descriptor.\n\
|
|
|
1237 Returns a subprocess-object to represent the connection.\n\
|
|
|
1238 Input and output work as for subprocesses; `delete-process' closes it.\n\
|
|
|
1239 Args are NAME BUFFER INFD OUTFD.\n\
|
|
|
1240 NAME is name for process. It is modified if necessary to make it unique.\n\
|
|
|
1241 BUFFER is the buffer (or buffer-name) to associate with the process.\n\
|
|
|
1242 Process output goes at end of that buffer, unless you specify\n\
|
|
|
1243 an output stream or filter function to handle the output.\n\
|
|
|
1244 BUFFER may be also nil, meaning that this process is not associated\n\
|
|
|
1245 with any buffer\n\
|
|
|
1246 INFD and OUTFD specify the file descriptors to use for input and\n\
|
|
|
1247 output, respectively."
|
|
|
1248 */
|
|
|
1249
|
|
|
1250 Lisp_Object
|
|
|
1251 connect_to_file_descriptor (Lisp_Object name, Lisp_Object buffer,
|
|
|
1252 Lisp_Object infd, Lisp_Object outfd)
|
|
|
1253 {
|
|
|
1254 /* This function can GC */
|
|
|
1255 Lisp_Object proc;
|
|
|
1256 int inch;
|
|
|
1257
|
|
|
1258 CHECK_STRING (name);
|
|
|
1259 CHECK_INT (infd);
|
|
|
1260 CHECK_INT (outfd);
|
|
|
1261
|
|
|
1262 inch = XINT (infd);
|
|
|
1263 if (!NILP (descriptor_to_process[inch]))
|
|
|
1264 error ("There is already a process connected to fd %d", inch);
|
|
|
1265 if (!NILP (buffer))
|
|
|
1266 buffer = Fget_buffer_create (buffer);
|
|
|
1267 proc = make_process_internal (name);
|
|
|
1268
|
|
|
1269 descriptor_to_process[inch] = proc;
|
|
|
1270
|
|
|
1271 XPROCESS (proc)->pid = Fcons (infd, name);
|
|
|
1272 XPROCESS (proc)->buffer = buffer;
|
|
|
1273 init_process_fds (XPROCESS (proc), inch, XINT (outfd));
|
|
|
1274 XPROCESS (proc)->connected_via_filedesc_p = 1;
|
|
|
1275
|
|
|
1276 event_stream_select_process (XPROCESS (proc));
|
|
|
1277
|
|
|
1278 return proc;
|
|
|
1279 }
|
|
|
1280
|
|
|
1281
|
|
|
1282 #ifdef HAVE_SOCKETS
|
|
|
1283
|
|
|
1284 static int
|
|
|
1285 get_internet_address (Lisp_Object host, struct sockaddr_in *address,
|
|
|
1286 Error_behavior errb)
|
|
|
1287 {
|
|
|
1288 struct hostent *host_info_ptr;
|
|
|
1289
|
|
|
1290 #ifndef HAVE_TERM
|
|
|
1291 memset (address, 0, sizeof (*address));
|
|
|
1292
|
|
|
1293 while (1)
|
|
|
1294 {
|
|
|
1295 #ifdef TRY_AGAIN
|
|
|
1296 h_errno = 0;
|
|
|
1297 #endif
|
|
|
1298 /* Some systems can't handle SIGIO/SIGALARM in gethostbyname. */
|
|
|
1299 slow_down_interrupts ();
|
|
|
1300 host_info_ptr = gethostbyname ((char *) string_data (XSTRING (host)));
|
|
|
1301 speed_up_interrupts ();
|
|
|
1302 #ifdef TRY_AGAIN
|
|
|
1303 if (! (host_info_ptr == 0 && h_errno == TRY_AGAIN))
|
|
|
1304 #endif
|
|
|
1305 break;
|
|
|
1306 Fsleep_for (make_int (1));
|
|
|
1307 }
|
|
|
1308 if (host_info_ptr)
|
|
|
1309 {
|
|
|
1310 address->sin_family = host_info_ptr->h_addrtype;
|
|
|
1311 memcpy (&address->sin_addr, host_info_ptr->h_addr, host_info_ptr->h_length);
|
|
|
1312 }
|
|
|
1313 else
|
|
|
1314 {
|
|
|
1315 IN_ADDR numeric_addr;
|
|
|
1316 /* Attempt to interpret host as numeric inet address */
|
|
|
1317 numeric_addr = inet_addr ((char *) string_data (XSTRING (host)));
|
|
|
1318 if (NUMERIC_ADDR_ERROR)
|
|
|
1319 {
|
|
|
1320 maybe_error (Qprocess, errb,
|
|
|
1321 "Unknown host \"%s\"", string_data (XSTRING (host)));
|
|
|
1322 return 0;
|
|
|
1323 }
|
|
|
1324
|
|
|
1325 /* There was some broken code here that called strlen() here
|
|
|
1326 on (char *) &numeric_addr and even sometimes accessed
|
|
|
1327 uninitialized data. */
|
|
|
1328 address->sin_family = AF_INET;
|
|
|
1329 * (IN_ADDR *) &address->sin_addr = numeric_addr;
|
|
|
1330 }
|
|
|
1331
|
|
|
1332 return 1;
|
|
|
1333 }
|
|
|
1334
|
|
|
1335 /* open a TCP network connection to a given HOST/SERVICE. Treated
|
|
|
1336 exactly like a normal process when reading and writing. Only
|
|
|
1337 differences are in status display and process deletion. A network
|
|
|
1338 connection has no PID; you cannot signal it. All you can do is
|
|
|
1339 deactivate and close it via delete-process */
|
|
|
1340
|
|
|
1341 DEFUN ("open-network-stream-internal", Fopen_network_stream_internal,
|
|
|
1342 Sopen_network_stream_internal,
|
|
|
1343 4, 4, 0 /*
|
|
|
1344 Open a TCP connection for a service to a host.
|
|
|
1345 Returns a subprocess-object to represent the connection.
|
|
|
1346 Input and output work as for subprocesses; `delete-process' closes it.
|
|
|
1347 Args are NAME BUFFER HOST SERVICE.
|
|
|
1348 NAME is name for process. It is modified if necessary to make it unique.
|
|
|
1349 BUFFER is the buffer (or buffer-name) to associate with the process.
|
|
|
1350 Process output goes at end of that buffer, unless you specify
|
|
|
1351 an output stream or filter function to handle the output.
|
|
|
1352 BUFFER may be also nil, meaning that this process is not associated
|
|
|
1353 with any buffer
|
|
|
1354 Third arg is name of the host to connect to, or its IP address.
|
|
|
1355 Fourth arg SERVICE is name of the service desired, or an integer
|
|
|
1356 specifying a port number to connect to.
|
|
|
1357 */ )
|
|
|
1358 (name, buffer, host, service)
|
|
|
1359 Lisp_Object name, buffer, host, service;
|
|
|
1360 {
|
|
|
1361 /* !!#### This function has not been Mule-ized */
|
|
|
1362 /* This function can GC */
|
|
|
1363 Lisp_Object proc;
|
|
|
1364 struct sockaddr_in address;
|
|
|
1365 int s, outch, inch;
|
|
|
1366 int port;
|
|
|
1367 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
|
|
|
1368 int retry = 0;
|
|
|
1369 int retval;
|
|
|
1370
|
|
|
1371 GCPRO4 (name, buffer, host, service);
|
|
|
1372 CHECK_STRING (name);
|
|
|
1373 CHECK_STRING (host);
|
|
|
1374 if (INTP (service))
|
|
|
1375 port = htons ((unsigned short) XINT (service));
|
|
|
1376 else
|
|
|
1377 {
|
|
|
1378 struct servent *svc_info;
|
|
|
1379 CHECK_STRING (service);
|
|
|
1380 svc_info = getservbyname ((char *) string_data (XSTRING (service)),
|
|
|
1381 "tcp");
|
|
|
1382 if (svc_info == 0)
|
|
|
1383 #ifdef WIN32
|
|
|
1384 error ("Unknown service \"%s\" (%d)",
|
|
|
1385 string_data (XSTRING (service)), WSAGetLastError ());
|
|
|
1386 #else
|
|
|
1387 error ("Unknown service \"%s\"", string_data (XSTRING (service)));
|
|
|
1388 #endif
|
|
|
1389 port = svc_info->s_port;
|
|
|
1390 }
|
|
|
1391
|
|
|
1392 get_internet_address (host, &address, ERROR_ME);
|
|
|
1393 address.sin_port = port;
|
|
|
1394
|
|
|
1395 s = socket (address.sin_family, SOCK_STREAM, 0);
|
|
|
1396 if (s < 0)
|
|
|
1397 report_file_error ("error creating socket", list1 (name));
|
|
|
1398
|
|
|
1399 /* Turn off interrupts here -- see comments below. There used to
|
|
|
1400 be code which called bind_polling_period() to slow the polling
|
|
|
1401 period down rather than turn it off, but that seems rather
|
|
|
1402 bogus to me. Best thing here is to use a non-blocking connect
|
|
|
1403 or something, to check for QUIT. */
|
|
|
1404
|
|
|
1405 /* Comments that are not quite valid: */
|
|
|
1406
|
|
|
1407 /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR)
|
|
|
1408 when connect is interrupted. So let's not let it get interrupted.
|
|
|
1409 Note we do not turn off polling, because polling is only used
|
|
|
1410 when not interrupt_input, and thus not normally used on the systems
|
|
|
1411 which have this bug. On systems which use polling, there's no way
|
|
|
1412 to quit if polling is turned off. */
|
|
|
1413
|
|
|
1414 /* Slow down polling. Some kernels have a bug which causes retrying
|
|
|
1415 connect to fail after a connect. */
|
|
|
1416
|
|
|
1417 slow_down_interrupts ();
|
|
|
1418
|
|
|
1419 loop:
|
|
|
1420
|
|
|
1421 /* A system call interrupted with a SIGALRM or SIGIO comes back
|
|
|
1422 here, with can_break_system_calls reset to 0. */
|
|
|
1423 SETJMP (break_system_call_jump);
|
|
|
1424 if (QUITP)
|
|
|
1425 {
|
|
|
1426 speed_up_interrupts ();
|
|
|
1427 REALLY_QUIT;
|
|
|
1428 /* In case something really weird happens ... */
|
|
|
1429 slow_down_interrupts ();
|
|
|
1430 }
|
|
|
1431
|
|
|
1432 /* Break out of connect with a signal (it isn't otherwise possible).
|
|
|
1433 Thus you don't get screwed with a hung network. */
|
|
|
1434 can_break_system_calls = 1;
|
|
|
1435 retval = connect (s, (struct sockaddr *) &address, sizeof (address));
|
|
|
1436 can_break_system_calls = 0;
|
|
|
1437 if (retval == -1 && errno != EISCONN)
|
|
|
1438 {
|
|
|
1439 int xerrno = errno;
|
|
|
1440 if (errno == EINTR)
|
|
|
1441 goto loop;
|
|
|
1442 if (errno == EADDRINUSE && retry < 20)
|
|
|
1443 {
|
|
|
1444 /* A delay here is needed on some FreeBSD systems,
|
|
|
1445 and it is harmless, since this retrying takes time anyway
|
|
|
1446 and should be infrequent. */
|
|
|
1447 Fsleep_for (make_int (1));
|
|
|
1448 retry++;
|
|
|
1449 goto loop;
|
|
|
1450 }
|
|
|
1451
|
|
|
1452 close (s);
|
|
|
1453
|
|
|
1454 speed_up_interrupts ();
|
|
|
1455
|
|
|
1456 errno = xerrno;
|
|
|
1457 report_file_error ("connection failed", list2 (host, name));
|
|
|
1458 }
|
|
|
1459
|
|
|
1460 speed_up_interrupts ();
|
|
|
1461
|
|
|
1462 #else /* HAVE_TERM */
|
|
|
1463 s = connect_server (0);
|
|
|
1464 if (s < 0)
|
|
|
1465 report_file_error ("error creating socket", Fcons (name, Qnil));
|
|
|
1466 send_command (s, C_PORT, 0, "%s:%d", string_data (XSTRING (host)), ntohs (port));
|
|
|
1467 send_command (s, C_DUMB, 1, 0);
|
|
|
1468 #endif /* HAVE_TERM */
|
|
|
1469
|
|
|
1470 inch = s;
|
|
|
1471 outch = dup (s);
|
|
|
1472 if (outch < 0)
|
|
|
1473 {
|
|
|
1474 close (s); /* this used to be leaked; from Kyle Jones */
|
|
|
1475 report_file_error ("error duplicating socket", list1 (name));
|
|
|
1476 }
|
|
|
1477
|
|
|
1478 if (!NILP (buffer))
|
|
|
1479 buffer = Fget_buffer_create (buffer);
|
|
|
1480 proc = make_process_internal (name);
|
|
|
1481
|
|
|
1482 descriptor_to_process[inch] = proc;
|
|
|
1483
|
|
|
1484 set_descriptor_non_blocking (inch);
|
|
|
1485
|
|
|
1486 XPROCESS (proc)->pid = Fcons (service, host);
|
|
|
1487 XPROCESS (proc)->buffer = buffer;
|
|
|
1488 init_process_fds (XPROCESS (proc), inch, outch);
|
|
|
1489 XPROCESS (proc)->connected_via_filedesc_p = 0;
|
|
|
1490
|
|
|
1491 event_stream_select_process (XPROCESS (proc));
|
|
|
1492
|
|
|
1493 UNGCPRO;
|
|
|
1494 return proc;
|
|
|
1495 }
|
|
|
1496
|
|
|
1497 #endif /* HAVE_SOCKETS */
|
|
|
1498
|
|
|
1499 Lisp_Object
|
|
|
1500 canonicalize_host_name (Lisp_Object host)
|
|
|
1501 {
|
|
|
1502 #ifdef HAVE_SOCKETS
|
|
|
1503 /* #### for HAVE_TERM, you probably have to do something else. */
|
|
|
1504 struct sockaddr_in address;
|
|
|
1505
|
|
|
1506 if (!get_internet_address (host, &address, ERROR_ME_NOT))
|
|
|
1507 return host;
|
|
|
1508
|
|
|
1509 if (address.sin_family == AF_INET)
|
|
|
1510 return build_string (inet_ntoa (address.sin_addr));
|
|
|
1511 else
|
|
|
1512 /* #### any clue what to do here? */
|
|
|
1513 return host;
|
|
|
1514 #else
|
|
|
1515 return host;
|
|
|
1516 #endif
|
|
|
1517 }
|
|
|
1518
|
|
|
1519
|
|
|
1520 DEFUN ("set-process-window-size", Fset_process_window_size,
|
|
|
1521 Sset_process_window_size, 3, 3, 0 /*
|
|
|
1522 Tell PROCESS that it has logical window size HEIGHT and WIDTH.
|
|
|
1523 */ )
|
|
|
1524 (proc, height, width)
|
|
|
1525 Lisp_Object proc, height, width;
|
|
|
1526 {
|
|
|
1527 CHECK_PROCESS (proc);
|
|
|
1528 CHECK_NATNUM (height);
|
|
|
1529 CHECK_NATNUM (width);
|
|
|
1530 if (set_window_size (XPROCESS (proc)->infd, XINT (height), XINT (width))
|
|
|
1531 <= 0)
|
|
|
1532 return Qnil;
|
|
|
1533 else
|
|
|
1534 return Qt;
|
|
|
1535 }
|
|
|
1536
|
|
|
1537
|
|
|
1538 /************************************************************************/
|
|
|
1539 /* Process I/O */
|
|
|
1540 /************************************************************************/
|
|
|
1541
|
|
|
1542 /* (Faccept_process_output is now in event-stream.c) */
|
|
|
1543
|
|
|
1544 /* Some FSFmacs error handlers here. We handle this
|
|
|
1545 in call2_trapping_errors(). */
|
|
|
1546
|
|
|
1547 /* Read pending output from the process channel,
|
|
|
1548 starting with our buffered-ahead character if we have one.
|
|
|
1549 Yield number of characters read.
|
|
|
1550
|
|
|
1551 This function reads at most 1024 bytes.
|
|
|
1552 If you want to read all available subprocess output,
|
|
|
1553 you must call it repeatedly until it returns zero. */
|
|
|
1554
|
|
|
1555 Charcount
|
|
|
1556 read_process_output (Lisp_Object proc)
|
|
|
1557 {
|
|
|
1558 /* This function can GC */
|
|
|
1559 Bytecount nbytes, nchars;
|
|
|
1560 #ifdef VMS
|
|
|
1561 char *chars;
|
|
|
1562 #else
|
|
|
1563 Bufbyte chars[1024];
|
|
|
1564 #endif
|
|
|
1565 Lisp_Object outstream;
|
|
|
1566 struct Lisp_Process *p = XPROCESS (proc);
|
|
|
1567
|
|
|
1568 /* If there is a lot of output from the subprocess, the loop in
|
|
|
1569 execute_internal_event() might call read_process_output() more
|
|
|
1570 than once. If the filter that was executed from one of these
|
|
|
1571 calls set the filter to t, we have to stop now. Return -1 rather
|
|
|
1572 than 0 so execute_internal_event() doesn't close the process.
|
|
|
1573 Really, the loop in execute_internal_event() should check itself
|
|
|
1574 for a process-filter change, like in status_notify(); but the
|
|
|
1575 struct Lisp_Process is not exported outside of this file. */
|
|
|
1576 if (p->infd < 0)
|
|
|
1577 return -1; /* already closed */
|
|
|
1578
|
|
|
1579 if (!NILP (p->filter) && (p->filter_does_read))
|
|
|
1580 {
|
|
|
1581 Lisp_Object filter_result;
|
|
|
1582
|
|
|
1583 /* Some weird FSFmacs crap here with
|
|
|
1584 Vdeactivate_mark and current_buffer->keymap */
|
|
|
1585 running_asynch_code = 1;
|
|
|
1586 filter_result = call2_trapping_errors ("Error in process filter",
|
|
|
1587 p->filter, proc, Qnil);
|
|
|
1588 running_asynch_code = 0;
|
|
|
1589 restore_match_data ();
|
|
|
1590 CHECK_INT (filter_result);
|
|
|
1591 return XINT (filter_result);
|
|
|
1592 }
|
|
|
1593
|
|
|
1594 #ifdef VMS
|
|
|
1595 VMS_PROC_STUFF *vs, *get_vms_process_pointer();
|
|
|
1596
|
|
|
1597 vs = get_vms_process_pointer (XINT (p->pid));
|
|
|
1598 if (vs)
|
|
|
1599 {
|
|
|
1600 if (!vs->iosb[0])
|
|
|
1601 return(0); /* Really weird if it does this */
|
|
|
1602 if (!(vs->iosb[0] & 1))
|
|
|
1603 return -1; /* I/O error */
|
|
|
1604 }
|
|
|
1605 else
|
|
|
1606 error ("Could not get VMS process pointer");
|
|
|
1607 chars = vs->inputBuffer;
|
|
|
1608 nbytes = clean_vms_buffer (chars, vs->iosb[1]);
|
|
|
1609 if (nbytes <= 0)
|
|
|
1610 {
|
|
|
1611 start_vms_process_read (vs); /* Crank up the next read on the process */
|
|
|
1612 return 1; /* Nothing worth printing, say we got 1 */
|
|
|
1613 }
|
|
|
1614 #else /* not VMS */
|
|
|
1615
|
|
|
1616 #if 0 /* FSFmacs */
|
|
|
1617 /* #### equivalent code from FSFmacs. Would need some porting
|
|
|
1618 for Windows NT. */
|
|
|
1619 if (proc_buffered_char[channel] < 0)
|
|
|
1620 #ifdef WINDOWSNT
|
|
|
1621 nchars = read_child_output (channel, chars, sizeof (chars));
|
|
|
1622 #else
|
|
|
1623 nchars = read (channel, chars, sizeof chars);
|
|
|
1624 #endif
|
|
|
1625 else
|
|
|
1626 {
|
|
|
1627 chars[0] = proc_buffered_char[channel];
|
|
|
1628 proc_buffered_char[channel] = -1;
|
|
|
1629 #ifdef WINDOWSNT
|
|
|
1630 nchars = read_child_output (channel, chars + 1, sizeof (chars) - 1);
|
|
|
1631 #else
|
|
|
1632 nchars = read (channel, chars + 1, sizeof chars - 1);
|
|
|
1633 #endif
|
|
|
1634 if (nchars < 0)
|
|
|
1635 nchars = 1;
|
|
|
1636 else
|
|
|
1637 nchars = nchars + 1;
|
|
|
1638 }
|
|
|
1639 #endif /* FSFmacs */
|
|
|
1640
|
|
|
1641 nbytes = Lstream_read (XLSTREAM (p->instream), chars, sizeof (chars));
|
|
|
1642 if (nbytes <= 0) return nbytes;
|
|
|
1643 #endif /* not VMS */
|
|
|
1644
|
|
|
1645 nchars = bytecount_to_charcount (chars, nbytes);
|
|
|
1646 outstream = p->filter;
|
|
|
1647 if (!NILP (outstream))
|
|
|
1648 {
|
|
|
1649 /* We used to bind inhibit-quit to t here, but
|
|
|
1650 call2_trapping_errors() does that for us. */
|
|
|
1651 running_asynch_code = 1;
|
|
|
1652 call2_trapping_errors ("Error in process filter",
|
|
|
1653 outstream, proc, make_string (chars, nbytes));
|
|
|
1654 running_asynch_code = 0;
|
|
|
1655 restore_match_data ();
|
|
|
1656 #ifdef VMS
|
|
|
1657 start_vms_process_read (vs);
|
|
|
1658 #endif
|
|
|
1659 return (nchars);
|
|
|
1660 }
|
|
|
1661
|
|
|
1662 /* If no filter, write into buffer if it isn't dead. */
|
|
|
1663 if (!NILP (p->buffer) && BUFFER_LIVE_P (XBUFFER (p->buffer)))
|
|
|
1664 {
|
|
|
1665 Lisp_Object old_read_only = Qnil;
|
|
|
1666 Bufpos old_point;
|
|
|
1667 Bufpos old_begv;
|
|
|
1668 Bufpos old_zv;
|
|
|
1669 int old_zmacs_region_stays = zmacs_region_stays;
|
|
|
1670 struct gcpro gcpro1, gcpro2;
|
|
|
1671 struct buffer *buf = XBUFFER (p->buffer);
|
|
|
1672
|
|
|
1673 GCPRO2 (proc, old_read_only);
|
|
|
1674
|
|
|
1675 old_point = BUF_PT (buf);
|
|
|
1676 old_begv = BUF_BEGV (buf);
|
|
|
1677 old_zv = BUF_ZV (buf);
|
|
|
1678 old_read_only = buf->read_only;
|
|
|
1679 buf->read_only = Qnil;
|
|
|
1680
|
|
|
1681 /* Insert new output into buffer
|
|
|
1682 at the current end-of-output marker,
|
|
|
1683 thus preserving logical ordering of input and output. */
|
|
|
1684 if (XMARKER (p->mark)->buffer)
|
|
|
1685 BUF_SET_PT (buf,
|
|
|
1686 bufpos_clip_to_bounds (old_begv, marker_position (p->mark),
|
|
|
1687 old_zv));
|
|
|
1688 else
|
|
|
1689 BUF_SET_PT (buf, old_zv);
|
|
|
1690
|
|
|
1691 /* If the output marker is outside of the visible region, save
|
|
|
1692 the restriction and widen. */
|
|
|
1693 if (! (BUF_BEGV (buf) <= BUF_PT (buf) &&
|
|
|
1694 BUF_PT (buf) <= BUF_ZV (buf)))
|
|
|
1695 Fwiden (p->buffer);
|
|
|
1696
|
|
|
1697 /* Make sure opoint floats ahead of any new text, just as point
|
|
|
1698 would. */
|
|
|
1699 if (BUF_PT (buf) <= old_point)
|
|
|
1700 old_point += nchars;
|
|
|
1701
|
|
|
1702 /* Insert after old_begv, but before old_zv. */
|
|
|
1703 if (BUF_PT (buf) < old_begv)
|
|
|
1704 old_begv += nchars;
|
|
|
1705 if (BUF_PT (buf) <= old_zv)
|
|
|
1706 old_zv += nchars;
|
|
|
1707
|
|
|
1708 #if 0
|
|
|
1709 /* This screws up intial display of the window. jla */
|
|
|
1710
|
|
|
1711 /* Insert before markers in case we are inserting where
|
|
|
1712 the buffer's mark is, and the user's next command is Meta-y. */
|
|
|
1713 buffer_insert_raw_string_1 (buf, -1, chars,
|
|
|
1714 nbytes, INSDEL_BEFORE_MARKERS);
|
|
|
1715 #else
|
|
|
1716 buffer_insert_raw_string (buf, chars, nbytes);
|
|
|
1717 #endif
|
|
|
1718
|
|
|
1719 Fset_marker (p->mark, make_int (BUF_PT (buf)), p->buffer);
|
|
|
1720
|
|
|
1721 MARK_MODELINE_CHANGED;
|
|
|
1722
|
|
|
1723 /* If the restriction isn't what it should be, set it. */
|
|
|
1724 if (old_begv != BUF_BEGV (buf) || old_zv != BUF_ZV (buf))
|
|
|
1725 Fnarrow_to_region (make_int (old_begv), make_int (old_zv),
|
|
|
1726 p->buffer);
|
|
|
1727
|
|
|
1728 /* Handling the process output should not deactivate the mark. */
|
|
|
1729 zmacs_region_stays = old_zmacs_region_stays;
|
|
|
1730 buf->read_only = old_read_only;
|
|
|
1731 BUF_SET_PT (buf, old_point);
|
|
|
1732
|
|
|
1733 UNGCPRO;
|
|
|
1734 }
|
|
|
1735 #ifdef VMS
|
|
|
1736 start_vms_process_read (vs);
|
|
|
1737 #endif
|
|
|
1738 return (nchars);
|
|
|
1739 }
|
|
|
1740
|
|
|
1741 /* Sending data to subprocess */
|
|
|
1742
|
|
|
1743 static JMP_BUF send_process_frame;
|
|
|
1744
|
|
|
1745 static SIGTYPE
|
|
|
1746 send_process_trap (int signum)
|
|
|
1747 {
|
|
|
1748 EMACS_REESTABLISH_SIGNAL (signum, send_process_trap);
|
|
|
1749 EMACS_UNBLOCK_SIGNAL (signum);
|
|
|
1750 LONGJMP (send_process_frame, 1);
|
|
|
1751 }
|
|
|
1752
|
|
|
1753 /* send some data to process PROC. If NONRELOCATABLE is non-NULL, it
|
|
|
1754 specifies the address of the data. Otherwise, the data comes from the
|
|
|
1755 object RELOCATABLE (either a string or a buffer). START and LEN
|
|
|
1756 specify the offset and length of the data to send.
|
|
|
1757
|
|
|
1758 Note that START and LEN are in Bufpos's if RELOCATABLE is a buffer,
|
|
|
1759 and in Bytecounts otherwise. */
|
|
|
1760
|
|
|
1761 static void
|
|
|
1762 send_process (volatile Lisp_Object proc,
|
|
|
1763 Lisp_Object relocatable, CONST Bufbyte *nonrelocatable,
|
|
|
1764 int start, int len)
|
|
|
1765 {
|
|
|
1766 /* This function can GC */
|
|
|
1767 /* Use volatile to protect variables from being clobbered by longjmp. */
|
|
|
1768 struct gcpro gcpro1, gcpro2;
|
|
|
1769 SIGTYPE (*old_sigpipe) (int) = 0;
|
|
|
1770 Lisp_Object lstream = Qnil;
|
|
|
1771 volatile struct Lisp_Process *p = XPROCESS (proc);
|
|
|
1772 #if defined (NO_UNION_TYPE) /* || !defined (__GNUC__) GCC bug only??? */
|
|
|
1773 /* #### ugh! There must be a better solution. */
|
|
|
1774 Lisp_Object defeat_volatile_kludge = (Lisp_Object) proc;
|
|
|
1775 #else
|
|
|
1776 Lisp_Object defeat_volatile_kludge = proc;
|
|
|
1777 #endif
|
|
|
1778
|
|
|
1779 #ifdef VMS
|
|
|
1780 VMS_PROC_STUFF *vs, *get_vms_process_pointer (int);
|
|
|
1781 #endif /* VMS */
|
|
|
1782
|
|
|
1783 GCPRO2 (defeat_volatile_kludge, lstream);
|
|
|
1784
|
|
|
1785 if (p->outfd < 0)
|
|
|
1786 signal_simple_error ("Process not open for writing", proc);
|
|
|
1787
|
|
|
1788 #ifdef VMS
|
|
|
1789 vs = get_vms_process_pointer (XINT (p->pid));
|
|
|
1790 if (vs == 0)
|
|
|
1791 error ("Could not find this process: %x",
|
|
|
1792 XINT (p->pid));
|
|
|
1793 else if (write_to_vms_process (vs, buf, len))
|
|
|
1794 ;
|
|
|
1795 #else
|
|
|
1796
|
|
|
1797 if (nonrelocatable)
|
|
|
1798 lstream =
|
|
|
1799 make_fixed_buffer_input_stream (nonrelocatable + start, len);
|
|
|
1800 else if (GC_BUFFERP (relocatable))
|
|
|
1801 lstream = make_lisp_buffer_input_stream (XBUFFER (relocatable),
|
|
|
1802 start, start + len, 0);
|
|
|
1803 else
|
|
|
1804 lstream = make_lisp_string_input_stream (relocatable, start, len);
|
|
|
1805
|
|
|
1806 if (!SETJMP (send_process_frame))
|
|
|
1807 {
|
|
|
1808 /* use a reasonable-sized buffer (somewhere around the size of the
|
|
|
1809 stream buffer) so as to avoid inundating the stream with blocked
|
|
|
1810 data. */
|
|
|
1811 Bufbyte chunkbuf[512];
|
|
|
1812 Bytecount chunklen;
|
|
|
1813
|
|
|
1814 while (1)
|
|
|
1815 {
|
|
|
1816 int writeret;
|
|
|
1817
|
|
|
1818 chunklen = Lstream_read (XLSTREAM (lstream), chunkbuf, 512);
|
|
|
1819 if (chunklen <= 0)
|
|
|
1820 break; /* perhaps should abort() if < 0?
|
|
|
1821 This should never happen. */
|
|
|
1822 old_sigpipe =
|
|
|
1823 (SIGTYPE (*) (int)) signal (SIGPIPE, send_process_trap);
|
|
|
1824 /* Lstream_write() will never successfully write less than
|
|
|
1825 the amount sent in. In the worst case, it just buffers
|
|
|
1826 the unwritten data. */
|
|
|
1827 writeret = Lstream_write (XLSTREAM (p->outstream), chunkbuf,
|
|
|
1828 chunklen);
|
|
|
1829 signal (SIGPIPE, old_sigpipe);
|
|
|
1830 if (writeret < 0)
|
|
|
1831 /* This is a real error. Blocking errors are handled
|
|
|
1832 specially inside of the filedesc stream. */
|
|
|
1833 report_file_error ("writing to process",
|
|
|
1834 list1 (proc));
|
|
|
1835 while (filedesc_stream_was_blocked (XLSTREAM (p->filedesc_stream)))
|
|
|
1836 {
|
|
|
1837 /* Buffer is full. Wait, accepting input;
|
|
|
1838 that may allow the program
|
|
|
1839 to finish doing output and read more. */
|
|
|
1840 Faccept_process_output (Qnil, make_int (1), Qnil);
|
|
|
1841 old_sigpipe =
|
|
|
1842 (SIGTYPE (*) (int)) signal (SIGPIPE, send_process_trap);
|
|
|
1843 Lstream_flush (XLSTREAM (p->filedesc_stream));
|
|
|
1844 signal (SIGPIPE, old_sigpipe);
|
|
|
1845 }
|
|
|
1846 }
|
|
|
1847 }
|
|
|
1848 #endif /* !VMS */
|
|
|
1849 else
|
|
|
1850 { /* We got here from a longjmp() from the SIGPIPE handler */
|
|
|
1851 signal (SIGPIPE, old_sigpipe);
|
|
|
1852 p->status_symbol = Qexit;
|
|
|
1853 p->exit_code = 256; /* #### SIGPIPE ??? */
|
|
|
1854 p->core_dumped = 0;
|
|
|
1855 p->tick++;
|
|
|
1856 process_tick++;
|
|
|
1857 deactivate_process (proc);
|
|
|
1858 #ifdef VMS
|
|
|
1859 error ("Error writing to process %s; closed it",
|
|
|
1860 string_data (XSTRING (p->name)));
|
|
|
1861 #else
|
|
|
1862 error ("SIGPIPE raised on process %s; closed it",
|
|
|
1863 string_data (XSTRING (p->name)));
|
|
|
1864 #endif
|
|
|
1865 }
|
|
|
1866 Lstream_flush (XLSTREAM (p->outstream));
|
|
|
1867 UNGCPRO;
|
|
|
1868 }
|
|
|
1869
|
|
|
1870 DEFUN ("process-tty-name", Fprocess_tty_name, Sprocess_tty_name, 1, 1, 0 /*
|
|
|
1871 Return the name of the terminal PROCESS uses, or nil if none.
|
|
|
1872 This is the terminal that the process itself reads and writes on,
|
|
|
1873 not the name of the pty that Emacs uses to talk with that terminal.
|
|
|
1874 */ )
|
|
|
1875 (proc)
|
|
|
1876 Lisp_Object proc;
|
|
|
1877 {
|
|
|
1878 CHECK_PROCESS (proc);
|
|
|
1879 return XPROCESS (proc)->tty_name;
|
|
|
1880 }
|
|
|
1881
|
|
|
1882 DEFUN ("set-process-buffer", Fset_process_buffer, Sset_process_buffer,
|
|
|
1883 2, 2, 0 /*
|
|
|
1884 Set buffer associated with PROCESS to BUFFER (a buffer, or nil).
|
|
|
1885 */ )
|
|
|
1886 (proc, buffer)
|
|
|
1887 Lisp_Object proc, buffer;
|
|
|
1888 {
|
|
|
1889 CHECK_PROCESS (proc);
|
|
|
1890 if (!NILP (buffer))
|
|
|
1891 CHECK_BUFFER (buffer);
|
|
|
1892 XPROCESS (proc)->buffer = buffer;
|
|
|
1893 return buffer;
|
|
|
1894 }
|
|
|
1895
|
|
|
1896 DEFUN ("process-buffer", Fprocess_buffer, Sprocess_buffer,
|
|
|
1897 1, 1, 0 /*
|
|
|
1898 Return the buffer PROCESS is associated with.
|
|
|
1899 Output from PROCESS is inserted in this buffer
|
|
|
1900 unless PROCESS has a filter.
|
|
|
1901 */ )
|
|
|
1902 (proc)
|
|
|
1903 Lisp_Object proc;
|
|
|
1904 {
|
|
|
1905 CHECK_PROCESS (proc);
|
|
|
1906 return XPROCESS (proc)->buffer;
|
|
|
1907 }
|
|
|
1908
|
|
|
1909 DEFUN ("process-mark", Fprocess_mark, Sprocess_mark,
|
|
|
1910 1, 1, 0 /*
|
|
|
1911 Return the marker for the end of the last output from PROCESS.
|
|
|
1912 */ )
|
|
|
1913 (proc)
|
|
|
1914 Lisp_Object proc;
|
|
|
1915 {
|
|
|
1916 CHECK_PROCESS (proc);
|
|
|
1917 #ifdef ENERGIZE
|
|
|
1918 if (EQ (proc, Venergize_process)) /* per buffer rather than per process */
|
|
|
1919 return Fenergize_user_input_buffer_mark (Qnil); /* ## current_buffer ok? */
|
|
|
1920 #endif
|
|
|
1921 return XPROCESS (proc)->mark;
|
|
|
1922 }
|
|
|
1923
|
|
|
1924 void
|
|
|
1925 set_process_filter (Lisp_Object proc, Lisp_Object filter, int filter_does_read)
|
|
|
1926 {
|
|
|
1927 CHECK_PROCESS (proc);
|
|
|
1928 if (PROCESS_LIVE_P (proc))
|
|
|
1929 if (EQ (filter, Qt))
|
|
|
1930 event_stream_unselect_process (XPROCESS (proc));
|
|
|
1931 else
|
|
|
1932 event_stream_select_process (XPROCESS (proc));
|
|
|
1933
|
|
|
1934 XPROCESS (proc)->filter = filter;
|
|
|
1935 XPROCESS (proc)->filter_does_read = filter_does_read;
|
|
|
1936 }
|
|
|
1937
|
|
|
1938 DEFUN ("set-process-filter", Fset_process_filter, Sset_process_filter,
|
|
|
1939 2, 2, 0 /*
|
|
|
1940 Give PROCESS the filter function FILTER; nil means no filter.
|
|
|
1941 t means stop accepting output from the process.
|
|
|
1942 When a process has a filter, each time it does output
|
|
|
1943 the entire string of output is passed to the filter.
|
|
|
1944 The filter gets two arguments: the process and the string of output.
|
|
|
1945 If the process has a filter, its buffer is not used for output.
|
|
|
1946 */ )
|
|
|
1947 (proc, filter)
|
|
|
1948 Lisp_Object proc, filter;
|
|
|
1949 {
|
|
|
1950 set_process_filter (proc, filter, 0);
|
|
|
1951 return filter;
|
|
|
1952 }
|
|
|
1953
|
|
|
1954 DEFUN ("process-filter", Fprocess_filter, Sprocess_filter,
|
|
|
1955 1, 1, 0 /*
|
|
|
1956 Return the filter function of PROCESS; nil if none.
|
|
|
1957 See `set-process-filter' for more info on filter functions.
|
|
|
1958 */ )
|
|
|
1959 (proc)
|
|
|
1960 Lisp_Object proc;
|
|
|
1961 {
|
|
|
1962 CHECK_PROCESS (proc);
|
|
|
1963 return XPROCESS (proc)->filter;
|
|
|
1964 }
|
|
|
1965
|
|
|
1966 DEFUN ("process-send-region", Fprocess_send_region, Sprocess_send_region,
|
|
|
1967 3, 3, 0 /*
|
|
|
1968 Send current contents of region as input to PROCESS.
|
|
|
1969 PROCESS may be a process name or an actual process.
|
|
|
1970 Called from program, takes three arguments, PROCESS, START and END.
|
|
|
1971 If the region is more than 500 or so characters long,
|
|
|
1972 it is sent in several bunches. This may happen even for shorter regions.
|
|
|
1973 Output from processes can arrive in between bunches.
|
|
|
1974 */ )
|
|
|
1975 (process, start, end)
|
|
|
1976 Lisp_Object process, start, end;
|
|
|
1977 {
|
|
|
1978 /* This function can GC */
|
|
|
1979 Lisp_Object proc = get_process (process);
|
|
|
1980 Bufpos st, en;
|
|
|
1981
|
|
|
1982 get_buffer_range_char (current_buffer, start, end, &st, &en, 0);
|
|
|
1983
|
|
|
1984 send_process (proc, Fcurrent_buffer (), 0,
|
|
|
1985 st, en - st);
|
|
|
1986 return (Qnil);
|
|
|
1987 }
|
|
|
1988
|
|
|
1989 DEFUN ("process-send-string", Fprocess_send_string, Sprocess_send_string,
|
|
|
1990 2, 4, 0 /*
|
|
|
1991 Send PROCESS the contents of STRING as input.
|
|
|
1992 PROCESS may be a process name or an actual process.
|
|
|
1993 Optional arguments FROM and TO specify part of STRING, see `substring'.
|
|
|
1994 If STRING is more than 500 or so characters long,
|
|
|
1995 it is sent in several bunches. This may happen even for shorter strings.
|
|
|
1996 Output from processes can arrive in between bunches.
|
|
|
1997 */ )
|
|
|
1998 (process, string, from, to)
|
|
|
1999 Lisp_Object process, string, from, to;
|
|
|
2000 {
|
|
|
2001 /* This function can GC */
|
|
|
2002 Lisp_Object proc;
|
|
|
2003 Bytecount len;
|
|
|
2004 Bytecount bfr, bto;
|
|
|
2005
|
|
|
2006 proc = get_process (process);
|
|
|
2007 CHECK_STRING (string);
|
|
|
2008 get_string_range_byte (string, from, to, &bfr, &bto,
|
|
|
2009 GB_HISTORICAL_STRING_BEHAVIOR);
|
|
|
2010 len = bto - bfr;
|
|
|
2011
|
|
|
2012 send_process (proc, string, 0, bfr, len);
|
|
|
2013 return (Qnil);
|
|
|
2014 }
|
|
|
2015
|
|
|
2016
|
|
|
2017 /************************************************************************/
|
|
|
2018 /* process status */
|
|
|
2019 /************************************************************************/
|
|
|
2020
|
|
|
2021 /* Some FSFmacs error handlers here. We handle this
|
|
|
2022 in call2_trapping_errors(). */
|
|
|
2023
|
|
|
2024 static Lisp_Object
|
|
|
2025 exec_sentinel_unwind (Lisp_Object datum)
|
|
|
2026 {
|
|
|
2027 struct Lisp_Cons *d = XCONS (datum);
|
|
|
2028 XPROCESS (d->car)->sentinel = d->cdr;
|
|
|
2029 free_cons (d);
|
|
|
2030 return Qnil;
|
|
|
2031 }
|
|
|
2032
|
|
|
2033 static void
|
|
|
2034 exec_sentinel (Lisp_Object proc, Lisp_Object reason)
|
|
|
2035 {
|
|
|
2036 /* This function can GC */
|
|
|
2037 Lisp_Object sentinel;
|
|
|
2038 struct Lisp_Process *p = XPROCESS (proc);
|
|
|
2039 int speccount = specpdl_depth ();
|
|
|
2040
|
|
|
2041 sentinel = p->sentinel;
|
|
|
2042 if (NILP (sentinel))
|
|
|
2043 return;
|
|
|
2044
|
|
|
2045 /* Some weird FSFmacs crap here with
|
|
|
2046 Vdeactivate_mark and current_buffer->keymap */
|
|
|
2047
|
|
|
2048 /* Zilch the sentinel while it's running, to avoid recursive invocations;
|
|
|
2049 assure that it gets restored no matter how the sentinel exits. */
|
|
|
2050 p->sentinel = Qnil;
|
|
|
2051 record_unwind_protect (exec_sentinel_unwind, noseeum_cons (proc, sentinel));
|
|
|
2052 /* We used to bind inhibit-quit to t here, but call2_trapping_errors()
|
|
|
2053 does that for us. */
|
|
|
2054 running_asynch_code = 1;
|
|
|
2055 call2_trapping_errors ("Error in process sentinel",
|
|
|
2056 sentinel, proc, reason);
|
|
|
2057 running_asynch_code = 0;
|
|
|
2058 restore_match_data ();
|
|
|
2059 unbind_to (speccount, Qnil);
|
|
|
2060 }
|
|
|
2061
|
|
|
2062 DEFUN ("set-process-sentinel", Fset_process_sentinel, Sset_process_sentinel,
|
|
|
2063 2, 2, 0 /*
|
|
|
2064 Give PROCESS the sentinel SENTINEL; nil for none.
|
|
|
2065 The sentinel is called as a function when the process changes state.
|
|
|
2066 It gets two arguments: the process, and a string describing the change.
|
|
|
2067 */ )
|
|
|
2068 (proc, sentinel)
|
|
|
2069 Lisp_Object proc, sentinel;
|
|
|
2070 {
|
|
|
2071 CHECK_PROCESS (proc);
|
|
|
2072 XPROCESS (proc)->sentinel = sentinel;
|
|
|
2073 return sentinel;
|
|
|
2074 }
|
|
|
2075
|
|
|
2076 DEFUN ("process-sentinel", Fprocess_sentinel, Sprocess_sentinel,
|
|
|
2077 1, 1, 0 /*
|
|
|
2078 Return the sentinel of PROCESS; nil if none.
|
|
|
2079 See `set-process-sentinel' for more info on sentinels.
|
|
|
2080 */ )
|
|
|
2081 (proc)
|
|
|
2082 Lisp_Object proc;
|
|
|
2083 {
|
|
|
2084 CHECK_PROCESS (proc);
|
|
|
2085 return XPROCESS (proc)->sentinel;
|
|
|
2086 }
|
|
|
2087
|
|
|
2088
|
|
|
2089 CONST char *
|
|
|
2090 signal_name (int signum)
|
|
|
2091 {
|
|
|
2092 if (signum >= 0 && signum < NSIG)
|
|
|
2093 #ifndef VMS
|
|
|
2094 return ((CONST char *) sys_siglist[signum]);
|
|
|
2095 #else
|
|
|
2096 return ((CONST char *) sys_errlist[signum]);
|
|
|
2097 #endif
|
|
|
2098 return ((CONST char *) GETTEXT ("unknown signal"));
|
|
|
2099 }
|
|
|
2100
|
|
|
2101 /* Compute the Lisp form of the process status from
|
|
|
2102 the numeric status that was returned by `wait'. */
|
|
|
2103
|
|
|
2104 static void
|
|
|
2105 update_status_from_wait_code (struct Lisp_Process *p, WAITTYPE *w_fmh)
|
|
|
2106 {
|
|
|
2107 /* C compiler lossage when attempting to pass w directly */
|
|
|
2108 WAITTYPE w = *w_fmh;
|
|
|
2109
|
|
|
2110 if (WIFSTOPPED (w))
|
|
|
2111 {
|
|
|
2112 p->status_symbol = Qstop;
|
|
|
2113 p->exit_code = WSTOPSIG (w);
|
|
|
2114 p->core_dumped = 0;
|
|
|
2115 }
|
|
|
2116 else if (WIFEXITED (w))
|
|
|
2117 {
|
|
|
2118 p->status_symbol = Qexit;
|
|
|
2119 p->exit_code = WRETCODE (w);
|
|
|
2120 p->core_dumped = ((WCOREDUMP (w)) ? 1 : 0);
|
|
|
2121 }
|
|
|
2122 else if (WIFSIGNALED (w))
|
|
|
2123 {
|
|
|
2124 p->status_symbol = Qsignal;
|
|
|
2125 p->exit_code = (int) WTERMSIG (w);
|
|
|
2126 p->core_dumped = ((WCOREDUMP (w)) ? 1 : 0);
|
|
|
2127 }
|
|
|
2128 else
|
|
|
2129 {
|
|
|
2130 p->status_symbol = Qrun;
|
|
|
2131 p->exit_code = 0;
|
|
|
2132 }
|
|
|
2133 }
|
|
|
2134
|
|
|
2135 void
|
|
|
2136 update_process_status (Lisp_Object p,
|
|
|
2137 Lisp_Object status_symbol,
|
|
|
2138 int exit_code,
|
|
|
2139 int core_dumped)
|
|
|
2140 {
|
|
|
2141 XPROCESS (p)->tick++;
|
|
|
2142 process_tick++;
|
|
|
2143 XPROCESS (p)->status_symbol = status_symbol;
|
|
|
2144 XPROCESS (p)->exit_code = exit_code;
|
|
|
2145 XPROCESS (p)->core_dumped = core_dumped;
|
|
|
2146 }
|
|
|
2147
|
|
|
2148 #ifdef SIGCHLD
|
|
|
2149
|
|
|
2150 #define MAX_EXITED_PROCESSES 1000
|
|
|
2151 static volatile pid_t exited_processes[MAX_EXITED_PROCESSES];
|
|
|
2152 static volatile WAITTYPE exited_processes_status[MAX_EXITED_PROCESSES];
|
|
|
2153 static volatile int exited_processes_index;
|
|
|
2154
|
|
|
2155 static volatile int sigchld_happened;
|
|
|
2156
|
|
|
2157 /* For any processes that have changed status and are recorded
|
|
|
2158 and such, update the corresponding struct Lisp_Process.
|
|
|
2159 We separate this from record_exited_processes() so that
|
|
|
2160 we never have to call this function from within a signal
|
|
|
2161 handler. We block SIGCHLD in case record_exited_processes()
|
|
|
2162 is called from a signal handler. */
|
|
|
2163
|
|
|
2164 static void
|
|
|
2165 reap_exited_processes (void)
|
|
|
2166 {
|
|
|
2167 int i;
|
|
|
2168 struct Lisp_Process *p;
|
|
|
2169
|
|
|
2170 EMACS_BLOCK_SIGNAL (SIGCHLD);
|
|
|
2171 for (i = 0; i < exited_processes_index; i++)
|
|
|
2172 {
|
|
|
2173 int pid = exited_processes[i];
|
|
|
2174 WAITTYPE w = exited_processes_status[i];
|
|
|
2175
|
|
|
2176 /* Find the process that signaled us, and record its status. */
|
|
|
2177
|
|
|
2178 p = 0;
|
|
|
2179 {
|
|
|
2180 Lisp_Object tail;
|
|
|
2181 LIST_LOOP (tail, Vprocess_list)
|
|
|
2182 {
|
|
|
2183 Lisp_Object proc = XCAR (tail);
|
|
|
2184 p = XPROCESS (proc);
|
|
|
2185 if (INTP (p->pid) && XINT (p->pid) == pid)
|
|
|
2186 break;
|
|
|
2187 p = 0;
|
|
|
2188 }
|
|
|
2189 }
|
|
|
2190
|
|
|
2191 if (p)
|
|
|
2192 {
|
|
|
2193 /* Change the status of the process that was found. */
|
|
|
2194 p->tick++;
|
|
|
2195 process_tick++;
|
|
|
2196 update_status_from_wait_code (p, &w);
|
|
|
2197
|
|
|
2198 /* If process has terminated, stop waiting for its output. */
|
|
|
2199 if (WIFSIGNALED (w) || WIFEXITED (w))
|
|
|
2200 {
|
|
|
2201 if (p->infd >= 0)
|
|
|
2202 {
|
|
|
2203 /* We can't just call event_stream->unselect_process_cb (p)
|
|
|
2204 here, because that calls XtRemoveInput, which is not
|
|
|
2205 necessarily reentrant, so we can't call this at interrupt
|
|
|
2206 level.
|
|
|
2207 */
|
|
|
2208 }
|
|
|
2209 }
|
|
|
2210 }
|
|
|
2211 else
|
|
|
2212 {
|
|
|
2213 /* There was no asynchronous process found for that id. Check
|
|
|
2214 if we have a synchronous process. Only set sync process status
|
|
|
2215 if there is one, so we work OK with the waitpid() call in
|
|
|
2216 wait_for_termination(). */
|
|
|
2217 if (synch_process_alive != 0)
|
|
|
2218 { /* Set the global sync process status variables. */
|
|
|
2219 synch_process_alive = 0;
|
|
|
2220
|
|
|
2221 /* Report the status of the synchronous process. */
|
|
|
2222 if (WIFEXITED (w))
|
|
|
2223 synch_process_retcode = WRETCODE (w);
|
|
|
2224 else if (WIFSIGNALED (w))
|
|
|
2225 synch_process_death = signal_name (WTERMSIG (w));
|
|
|
2226 }
|
|
|
2227 }
|
|
|
2228 }
|
|
|
2229
|
|
|
2230 exited_processes_index = 0;
|
|
|
2231
|
|
|
2232 EMACS_UNBLOCK_SIGNAL (SIGCHLD);
|
|
|
2233 }
|
|
|
2234
|
|
|
2235 /* On receipt of a signal that a child status has changed,
|
|
|
2236 loop asking about children with changed statuses until
|
|
|
2237 the system says there are no more. All we do is record
|
|
|
2238 the processes and wait status.
|
|
|
2239
|
|
|
2240 This function could be called from within the SIGCHLD
|
|
|
2241 handler, so it must be completely reentrant. When
|
|
|
2242 not called from a SIGCHLD handler, BLOCK_SIGCHLD should
|
|
|
2243 be non-zero so that SIGCHLD is blocked while this
|
|
|
2244 function is running. (This is necessary so avoid
|
|
|
2245 race conditions with the SIGCHLD_HAPPENED flag). */
|
|
|
2246
|
|
|
2247 static void
|
|
|
2248 record_exited_processes (int block_sigchld)
|
|
|
2249 {
|
|
|
2250 if (block_sigchld)
|
|
|
2251 EMACS_BLOCK_SIGNAL (SIGCHLD);
|
|
|
2252
|
|
|
2253 while (sigchld_happened)
|
|
|
2254 {
|
|
|
2255 int pid;
|
|
|
2256 WAITTYPE w;
|
|
|
2257
|
|
|
2258 /* Keep trying to get a status until we get a definitive result. */
|
|
|
2259 do
|
|
|
2260 {
|
|
|
2261 errno = 0;
|
|
|
2262 #ifdef WNOHANG
|
|
|
2263 # ifndef WUNTRACED
|
|
|
2264 # define WUNTRACED 0
|
|
|
2265 # endif /* not WUNTRACED */
|
|
|
2266 # ifdef HAVE_WAITPID
|
|
|
2267 pid = waitpid ((pid_t) -1, &w, WNOHANG | WUNTRACED);
|
|
|
2268 # else
|
|
|
2269 pid = wait3 (&w, WNOHANG | WUNTRACED, 0);
|
|
|
2270 # endif
|
|
|
2271 #else /* not WNOHANG */
|
|
|
2272 pid = wait (&w);
|
|
|
2273 #endif /* not WNOHANG */
|
|
|
2274 }
|
|
|
2275 while (pid <= 0 && errno == EINTR);
|
|
|
2276
|
|
|
2277 if (pid <= 0)
|
|
|
2278 break;
|
|
|
2279
|
|
|
2280 if (exited_processes_index < MAX_EXITED_PROCESSES)
|
|
|
2281 {
|
|
|
2282 exited_processes[exited_processes_index] = pid;
|
|
|
2283 exited_processes_status[exited_processes_index] = w;
|
|
|
2284 exited_processes_index++;
|
|
|
2285 }
|
|
|
2286
|
|
|
2287 /* On systems with WNOHANG, we just ignore the number
|
|
|
2288 of times that SIGCHLD was signalled, and keep looping
|
|
|
2289 until there are no more processes to wait on. If we
|
|
|
2290 don't have WNOHANG, we have to rely on the count in
|
|
|
2291 SIGCHLD_HAPPENED. */
|
|
|
2292 #ifndef WNOHANG
|
|
|
2293 sigchld_happened--;
|
|
|
2294 #endif /* not WNOHANG */
|
|
|
2295 }
|
|
|
2296
|
|
|
2297 sigchld_happened = 0;
|
|
|
2298
|
|
|
2299 if (block_sigchld)
|
|
|
2300 EMACS_UNBLOCK_SIGNAL (SIGCHLD);
|
|
|
2301 }
|
|
|
2302
|
|
|
2303 /** USG WARNING: Although it is not obvious from the documentation
|
|
|
2304 in signal(2), on a USG system the SIGCLD handler MUST NOT call
|
|
|
2305 signal() before executing at least one wait(), otherwise the handler
|
|
|
2306 will be called again, resulting in an infinite loop. The relevant
|
|
|
2307 portion of the documentation reads "SIGCLD signals will be queued
|
|
|
2308 and the signal-catching function will be continually reentered until
|
|
|
2309 the queue is empty". Invoking signal() causes the kernel to reexamine
|
|
|
2310 the SIGCLD queue. Fred Fish, UniSoft Systems Inc.
|
|
|
2311
|
|
|
2312 (Note that now this only applies in SYS V Release 2 and before.
|
|
|
2313 On SYS V Release 3, we use sigset() to set the signal handler for
|
|
|
2314 the first time, and so we don't have to reestablish the signal handler
|
|
|
2315 in the handler below. On SYS V Release 4, we don't get this weirdo
|
|
|
2316 behavior when we use sigaction(), which we do use.) */
|
|
|
2317
|
|
|
2318 static SIGTYPE
|
|
|
2319 sigchld_handler (int signo)
|
|
|
2320 {
|
|
|
2321 #ifdef OBNOXIOUS_SYSV_SIGCLD_BEHAVIOR
|
|
|
2322 int old_errno = errno;
|
|
|
2323
|
|
|
2324 sigchld_happened++;
|
|
|
2325 record_exited_processes (0);
|
|
|
2326 errno = old_errno;
|
|
|
2327 #else
|
|
|
2328 sigchld_happened++;
|
|
|
2329 #endif
|
|
|
2330 signal_fake_event ();
|
|
|
2331 /* WARNING - must come after wait3() for USG systems */
|
|
|
2332 EMACS_REESTABLISH_SIGNAL (signo, sigchld_handler);
|
|
|
2333 SIGRETURN;
|
|
|
2334 }
|
|
|
2335
|
|
|
2336 #endif /* SIGCHLD */
|
|
|
2337
|
|
|
2338 /* Return a string describing a process status list. */
|
|
|
2339
|
|
|
2340 static Lisp_Object
|
|
|
2341 status_message (struct Lisp_Process *p)
|
|
|
2342 {
|
|
|
2343 Lisp_Object symbol = p->status_symbol;
|
|
|
2344 int code = p->exit_code;
|
|
|
2345 int coredump = p->core_dumped;
|
|
|
2346 Lisp_Object string, string2;
|
|
|
2347
|
|
|
2348 if (EQ (symbol, Qsignal) || EQ (symbol, Qstop))
|
|
|
2349 {
|
|
|
2350 string = build_string (signal_name (code));
|
|
|
2351 if (coredump)
|
|
|
2352 string2 = build_translated_string (" (core dumped)\n");
|
|
|
2353 else
|
|
|
2354 string2 = build_string ("\n");
|
|
|
2355 set_string_char (XSTRING (string), 0,
|
|
|
2356 DOWNCASE (current_buffer,
|
|
|
2357 string_char (XSTRING (string), 0)));
|
|
|
2358 return concat2 (string, string2);
|
|
|
2359 }
|
|
|
2360 else if (EQ (symbol, Qexit))
|
|
|
2361 {
|
|
|
2362 if (code == 0)
|
|
|
2363 return build_translated_string ("finished\n");
|
|
|
2364 string = Fnumber_to_string (make_int (code));
|
|
|
2365 if (coredump)
|
|
|
2366 string2 = build_translated_string (" (core dumped)\n");
|
|
|
2367 else
|
|
|
2368 string2 = build_string ("\n");
|
|
|
2369 return concat2 (build_translated_string ("exited abnormally with code "),
|
|
|
2370 concat2 (string, string2));
|
|
|
2371 }
|
|
|
2372 else
|
|
|
2373 return Fcopy_sequence (Fsymbol_name (symbol));
|
|
|
2374 }
|
|
|
2375
|
|
|
2376 /* Tell status_notify() to check for terminated processes. We do this
|
|
|
2377 because on some systems we sometimes miss SIGCHLD calls. (Not sure
|
|
|
2378 why.) */
|
|
|
2379
|
|
|
2380 void
|
|
|
2381 kick_status_notify (void)
|
|
|
2382 {
|
|
|
2383 process_tick++;
|
|
|
2384 }
|
|
|
2385
|
|
|
2386 /* Report all recent events of a change in process status
|
|
|
2387 (either run the sentinel or output a message).
|
|
|
2388 This is done while Emacs is waiting for keyboard input. */
|
|
|
2389
|
|
|
2390 void
|
|
|
2391 status_notify (void)
|
|
|
2392 {
|
|
|
2393 /* This function can GC */
|
|
|
2394 Lisp_Object tail = Qnil;
|
|
|
2395 Lisp_Object symbol = Qnil;
|
|
|
2396 Lisp_Object msg = Qnil;
|
|
|
2397 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
2398 /* process_tick is volatile, so we have to remember it now.
|
|
|
2399 Otherwise, we get a race condition is SIGCHLD happens during
|
|
|
2400 this function.
|
|
|
2401
|
|
|
2402 (Actually, this is not the case anymore. The code to
|
|
|
2403 update the process structures has been moved out of the
|
|
|
2404 SIGCHLD handler. But for the moment I'm leaving this
|
|
|
2405 stuff in -- it can't hurt.) */
|
|
|
2406 int temp_process_tick;
|
|
|
2407
|
|
|
2408 #ifdef SIGCHLD
|
|
|
2409 #ifndef OBNOXIOUS_SYSV_SIGCLD_BEHAVIOR
|
|
|
2410 record_exited_processes (1);
|
|
|
2411 #endif
|
|
|
2412 reap_exited_processes ();
|
|
|
2413 #endif
|
|
|
2414
|
|
|
2415 temp_process_tick = process_tick;
|
|
|
2416
|
|
|
2417 if (update_tick == temp_process_tick)
|
|
|
2418 return;
|
|
|
2419
|
|
|
2420 /* We need to gcpro tail; if read_process_output calls a filter
|
|
|
2421 which deletes a process and removes the cons to which tail points
|
|
|
2422 from Vprocess_alist, and then causes a GC, tail is an unprotected
|
|
|
2423 reference. */
|
|
|
2424 GCPRO3 (tail, symbol, msg);
|
|
|
2425
|
|
|
2426 for (tail = Vprocess_list; CONSP (tail); tail = XCDR (tail))
|
|
|
2427 {
|
|
|
2428 Lisp_Object proc = XCAR (tail);
|
|
|
2429 struct Lisp_Process *p = XPROCESS (proc);
|
|
|
2430 /* p->tick is also volatile. Same thing as above applies. */
|
|
|
2431 int this_process_tick;
|
|
|
2432
|
|
|
2433 #ifdef HAVE_WAITPID
|
|
|
2434 /* #### extra check for terminated processes, in case a SIGCHLD
|
|
|
2435 got missed (this seems to happen sometimes, I'm not sure why).
|
|
|
2436 */
|
|
|
2437 {
|
|
|
2438 WAITTYPE w;
|
|
|
2439 #ifdef SIGCHLD
|
|
|
2440 EMACS_BLOCK_SIGNAL (SIGCHLD);
|
|
|
2441 #endif
|
|
|
2442 if (INTP (p->pid) &&
|
|
|
2443 waitpid (XINT (p->pid), &w, WNOHANG) == XINT (p->pid))
|
|
|
2444 {
|
|
|
2445 p->tick++;
|
|
|
2446 update_status_from_wait_code (p, &w);
|
|
|
2447 }
|
|
|
2448 #ifdef SIGCHLD
|
|
|
2449 EMACS_UNBLOCK_SIGNAL (SIGCHLD);
|
|
|
2450 #endif
|
|
|
2451 }
|
|
|
2452 #endif
|
|
|
2453 this_process_tick = p->tick;
|
|
|
2454 if (this_process_tick != p->update_tick)
|
|
|
2455 {
|
|
|
2456 p->update_tick = this_process_tick;
|
|
|
2457
|
|
|
2458 /* If process is still active, read any output that remains. */
|
|
|
2459 while (!EQ (p->filter, Qt)
|
|
|
2460 && read_process_output (proc) > 0)
|
|
|
2461 ;
|
|
|
2462
|
|
|
2463 /* Get the text to use for the message. */
|
|
|
2464 msg = status_message (p);
|
|
|
2465
|
|
|
2466 /* If process is terminated, deactivate it or delete it. */
|
|
|
2467 symbol = p->status_symbol;
|
|
|
2468
|
|
|
2469 if (EQ (symbol, Qsignal)
|
|
|
2470 || EQ (symbol, Qexit))
|
|
|
2471 {
|
|
|
2472 if (delete_exited_processes)
|
|
|
2473 remove_process (proc);
|
|
|
2474 else
|
|
|
2475 deactivate_process (proc);
|
|
|
2476 }
|
|
|
2477
|
|
|
2478 /* Now output the message suitably. */
|
|
|
2479 if (!NILP (p->sentinel))
|
|
|
2480 exec_sentinel (proc, msg);
|
|
|
2481 /* Don't bother with a message in the buffer
|
|
|
2482 when a process becomes runnable. */
|
|
|
2483 else if (!EQ (symbol, Qrun) && !NILP (p->buffer))
|
|
|
2484 {
|
|
|
2485 Lisp_Object old_read_only = Qnil;
|
|
|
2486 Lisp_Object old = Fcurrent_buffer ();
|
|
|
2487 Bufpos opoint;
|
|
|
2488 struct gcpro ngcpro1, ngcpro2;
|
|
|
2489
|
|
|
2490 /* Avoid error if buffer is deleted
|
|
|
2491 (probably that's why the process is dead, too) */
|
|
|
2492 if (!BUFFER_LIVE_P (XBUFFER (p->buffer)))
|
|
|
2493 continue;
|
|
|
2494
|
|
|
2495 NGCPRO2 (old, old_read_only);
|
|
|
2496 Fset_buffer (p->buffer);
|
|
|
2497 opoint = BUF_PT (current_buffer);
|
|
|
2498 /* Insert new output into buffer
|
|
|
2499 at the current end-of-output marker,
|
|
|
2500 thus preserving logical ordering of input and output. */
|
|
|
2501 if (XMARKER (p->mark)->buffer)
|
|
|
2502 BUF_SET_PT (current_buffer, marker_position (p->mark));
|
|
|
2503 else
|
|
|
2504 BUF_SET_PT (current_buffer, BUF_ZV (current_buffer));
|
|
|
2505 if (BUF_PT (current_buffer) <= opoint)
|
|
|
2506 opoint += (string_char_length (XSTRING (msg))
|
|
|
2507 + string_char_length (XSTRING (p->name))
|
|
|
2508 + 10);
|
|
|
2509
|
|
|
2510 old_read_only = current_buffer->read_only;
|
|
|
2511 current_buffer->read_only = Qnil;
|
|
|
2512 buffer_insert_c_string (current_buffer, "\nProcess ");
|
|
|
2513 Finsert (1, &p->name);
|
|
|
2514 buffer_insert_c_string (current_buffer, " ");
|
|
|
2515 Finsert (1, &msg);
|
|
|
2516 current_buffer->read_only = old_read_only;
|
|
|
2517 Fset_marker (p->mark, make_int (BUF_PT (current_buffer)),
|
|
|
2518 p->buffer);
|
|
|
2519
|
|
|
2520 BUF_SET_PT (current_buffer, opoint);
|
|
|
2521 Fset_buffer (old);
|
|
|
2522 NUNGCPRO;
|
|
|
2523 }
|
|
|
2524 }
|
|
|
2525 } /* end for */
|
|
|
2526
|
|
|
2527 /* in case buffers use %s in modeline-format */
|
|
|
2528 MARK_MODELINE_CHANGED;
|
|
|
2529 redisplay ();
|
|
|
2530
|
|
|
2531 update_tick = temp_process_tick;
|
|
|
2532
|
|
|
2533 UNGCPRO;
|
|
|
2534 }
|
|
|
2535
|
|
|
2536 DEFUN ("process-status", Fprocess_status, Sprocess_status, 1, 1, 0 /*
|
|
|
2537 Return the status of PROCESS.
|
|
|
2538 This is a symbol, one of these:
|
|
|
2539
|
|
|
2540 run -- for a process that is running.
|
|
|
2541 stop -- for a process stopped but continuable.
|
|
|
2542 exit -- for a process that has exited.
|
|
|
2543 signal -- for a process that has got a fatal signal.
|
|
|
2544 open -- for a network stream connection that is open.
|
|
|
2545 closed -- for a network stream connection that is closed.
|
|
|
2546 nil -- if arg is a process name and no such process exists.
|
|
|
2547 PROCESS may be a process, a buffer, the name of a process or buffer, or
|
|
|
2548 nil, indicating the current buffer's process.
|
|
|
2549 */ )
|
|
|
2550 (proc)
|
|
|
2551 Lisp_Object proc;
|
|
|
2552 {
|
|
|
2553 Lisp_Object status;
|
|
|
2554
|
|
|
2555 if (STRINGP (proc))
|
|
|
2556 proc = Fget_process (proc);
|
|
|
2557 else
|
|
|
2558 proc = get_process (proc);
|
|
|
2559
|
|
|
2560 if (NILP (proc))
|
|
|
2561 return proc;
|
|
|
2562
|
|
|
2563 status = XPROCESS (proc)->status_symbol;
|
|
|
2564 if (network_connection_p (proc))
|
|
|
2565 {
|
|
|
2566 if (EQ (status, Qrun))
|
|
|
2567 status = Qopen;
|
|
|
2568 else if (EQ (status, Qexit))
|
|
|
2569 status = Qclosed;
|
|
|
2570 }
|
|
|
2571 return (status);
|
|
|
2572 }
|
|
|
2573
|
|
|
2574 DEFUN ("process-exit-status", Fprocess_exit_status, Sprocess_exit_status,
|
|
|
2575 1, 1, 0 /*
|
|
|
2576 Return the exit status of PROCESS or the signal number that killed it.
|
|
|
2577 If PROCESS has not yet exited or died, return 0.
|
|
|
2578 */ )
|
|
|
2579 (proc)
|
|
|
2580 Lisp_Object proc;
|
|
|
2581 {
|
|
|
2582 CHECK_PROCESS (proc);
|
|
|
2583 return (make_int (XPROCESS (proc)->exit_code));
|
|
|
2584 }
|
|
|
2585
|
|
|
2586
|
|
|
2587 #ifdef SIGNALS_VIA_CHARACTERS
|
|
|
2588 /* Get signal character to send to process if SIGNALS_VIA_CHARACTERS */
|
|
|
2589
|
|
|
2590 static int
|
|
|
2591 process_signal_char (int tty_fd, int signo)
|
|
|
2592 {
|
|
|
2593 /* If it's not a tty, pray that these default values work */
|
|
|
2594 if (!isatty(tty_fd)) {
|
|
|
2595 #define CNTL(ch) (037 & (ch))
|
|
|
2596 switch (signo)
|
|
|
2597 {
|
|
|
2598 case SIGINT: return CNTL('C');
|
|
|
2599 case SIGQUIT: return CNTL('\\');
|
|
|
2600 #ifdef SIGTSTP
|
|
|
2601 case SIGTSTP: return CNTL('Z');
|
|
|
2602 #endif
|
|
|
2603 }
|
|
|
2604 }
|
|
|
2605
|
|
|
2606 #ifdef HAVE_TERMIOS
|
|
|
2607 /* TERMIOS is the latest and bestest, and seems most likely to work.
|
|
|
2608 If the system has it, use it. */
|
|
|
2609 {
|
|
|
2610 struct termios t;
|
|
|
2611 tcgetattr (tty_fd, &t);
|
|
|
2612 switch (signo)
|
|
|
2613 {
|
|
|
2614 case SIGINT: return t.c_cc[VINTR];
|
|
|
2615 case SIGQUIT: return t.c_cc[VQUIT];
|
|
|
2616 # if defined (VSWTCH) && !defined (PREFER_VSUSP)
|
|
|
2617 case SIGTSTP: return t.c_cc[VSWTCH];
|
|
|
2618 # else
|
|
|
2619 case SIGTSTP: return t.c_cc[VSUSP];
|
|
|
2620 # endif
|
|
|
2621 }
|
|
|
2622 }
|
|
|
2623
|
|
|
2624 # elif defined (TIOCGLTC) && defined (TIOCGETC) /* not HAVE_TERMIOS */
|
|
|
2625 {
|
|
|
2626 /* On Berkeley descendants, the following IOCTL's retrieve the
|
|
|
2627 current control characters. */
|
|
|
2628 struct tchars c;
|
|
|
2629 struct ltchars lc;
|
|
|
2630 switch (signo)
|
|
|
2631 {
|
|
|
2632 case SIGINT: ioctl (tty_fd, TIOCGETC, &c); return c.t_intrc;
|
|
|
2633 case SIGQUIT: ioctl (tty_fd, TIOCGETC, &c); return c.t_quitc;
|
|
|
2634 # ifdef SIGTSTP
|
|
|
2635 case SIGTSTP: ioctl (tty_fd, TIOCGLTC, &lc); return lc.t_suspc;
|
|
|
2636 # endif /* SIGTSTP */
|
|
|
2637 }
|
|
|
2638 }
|
|
|
2639
|
|
|
2640 # elif defined (TCGETA) /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
|
|
|
2641 {
|
|
|
2642 /* On SYSV descendants, the TCGETA ioctl retrieves the current
|
|
|
2643 control characters. */
|
|
|
2644 struct termio t;
|
|
|
2645 ioctl (tty_fd, TCGETA, &t);
|
|
|
2646 switch (signo) {
|
|
|
2647 case SIGINT: return t.c_cc[VINTR];
|
|
|
2648 case SIGQUIT: return t.c_cc[VQUIT];
|
|
|
2649 # ifdef SIGTSTP
|
|
|
2650 case SIGTSTP: return t.c_cc[VSWTCH];
|
|
|
2651 # endif /* SIGTSTP */
|
|
|
2652 }
|
|
|
2653 }
|
|
|
2654 # else /* ! defined (TCGETA) */
|
|
|
2655 #error ERROR! Using SIGNALS_VIA_CHARACTERS, but not (TIOCGLTC && TIOCGETC) || TCGETA
|
|
|
2656 /* If your system configuration files define SIGNALS_VIA_CHARACTERS,
|
|
|
2657 you'd better be using one of the alternatives above! */
|
|
|
2658 # endif /* ! defined (TCGETA) */
|
|
|
2659 return '\0';
|
|
|
2660 }
|
|
|
2661 #endif /* SIGNALS_VIA_CHARACTERS */
|
|
|
2662
|
|
|
2663
|
|
|
2664 /* send a signal number SIGNO to PROCESS.
|
|
|
2665 CURRENT_GROUP means send to the process group that currently owns
|
|
|
2666 the terminal being used to communicate with PROCESS.
|
|
|
2667 This is used for various commands in shell mode.
|
|
|
2668 If NOMSG is zero, insert signal-announcements into process's buffers
|
|
|
2669 right away.
|
|
|
2670
|
|
|
2671 If we can, we try to signal PROCESS by sending control characters
|
|
|
2672 down the pty. This allows us to signal inferiors who have changed
|
|
|
2673 their uid, for which killpg would return an EPERM error. */
|
|
|
2674
|
|
|
2675 static void
|
|
|
2676 process_send_signal (Lisp_Object process0, int signo,
|
|
|
2677 int current_group, int nomsg)
|
|
|
2678 {
|
|
|
2679 /* This function can GC */
|
|
|
2680 Lisp_Object proc = get_process (process0);
|
|
|
2681 struct Lisp_Process *p = XPROCESS (proc);
|
|
|
2682 int gid;
|
|
|
2683 int no_pgrp = 0;
|
|
|
2684
|
|
|
2685 if (network_connection_p (proc))
|
|
|
2686 error ("Network connection %s is not a subprocess",
|
|
|
2687 string_data (XSTRING (p->name)));
|
|
|
2688 if (p->infd < 0)
|
|
|
2689 error ("Process %s is not active",
|
|
|
2690 string_data (XSTRING (p->name)));
|
|
|
2691
|
|
|
2692 if (!p->pty_flag)
|
|
|
2693 current_group = 0;
|
|
|
2694
|
|
|
2695 /* If we are using pgrps, get a pgrp number and make it negative. */
|
|
|
2696 if (current_group)
|
|
|
2697 {
|
|
|
2698 #ifdef SIGNALS_VIA_CHARACTERS
|
|
|
2699 /* If possible, send signals to the entire pgrp
|
|
|
2700 by sending an input character to it. */
|
|
|
2701 {
|
|
|
2702 char sigchar = process_signal_char(p->subtty, signo);
|
|
|
2703 if (sigchar) {
|
|
|
2704 send_process (proc, Qnil, (Bufbyte *) &sigchar, 0, 1);
|
|
|
2705 return;
|
|
|
2706 }
|
|
|
2707 }
|
|
|
2708 #endif /* ! defined (SIGNALS_VIA_CHARACTERS) */
|
|
|
2709
|
|
|
2710 #ifdef TIOCGPGRP
|
|
|
2711 /* Get the pgrp using the tty itself, if we have that.
|
|
|
2712 Otherwise, use the pty to get the pgrp.
|
|
|
2713 On pfa systems, saka@pfu.fujitsu.co.JP writes:
|
|
|
2714 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
|
|
|
2715 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
|
|
|
2716 His patch indicates that if TIOCGPGRP returns an error, then
|
|
|
2717 we should just assume that p->pid is also the process group id. */
|
|
|
2718 {
|
|
|
2719 int err;
|
|
|
2720
|
|
|
2721 err = ioctl ( (p->subtty != -1 ? p->subtty : p->infd), TIOCGPGRP, &gid);
|
|
|
2722
|
|
|
2723 #ifdef pfa
|
|
|
2724 if (err == -1)
|
|
|
2725 gid = - XINT (p->pid);
|
|
|
2726 #endif /* ! defined (pfa) */
|
|
|
2727 }
|
|
|
2728 if (gid == -1)
|
|
|
2729 no_pgrp = 1;
|
|
|
2730 else
|
|
|
2731 gid = - gid;
|
|
|
2732 #else /* ! defined (TIOCGPGRP ) */
|
|
|
2733 /* Can't select pgrps on this system, so we know that
|
|
|
2734 the child itself heads the pgrp. */
|
|
|
2735 gid = - XINT (p->pid);
|
|
|
2736 #endif /* ! defined (TIOCGPGRP ) */
|
|
|
2737 }
|
|
|
2738 else
|
|
|
2739 gid = - XINT (p->pid);
|
|
|
2740
|
|
|
2741 switch (signo)
|
|
|
2742 {
|
|
|
2743 #ifdef SIGCONT
|
|
|
2744 case SIGCONT:
|
|
|
2745 p->status_symbol = Qrun;
|
|
|
2746 p->exit_code = 0;
|
|
|
2747 p->tick++;
|
|
|
2748 process_tick++;
|
|
|
2749 if (!nomsg)
|
|
|
2750 status_notify ();
|
|
|
2751 break;
|
|
|
2752 #endif /* ! defined (SIGCONT) */
|
|
|
2753 case SIGINT:
|
|
|
2754 #ifdef VMS
|
|
|
2755 send_process (proc, Qnil, (Bufbyte *) "\003", 0,
|
|
|
2756 1); /* ^C */
|
|
|
2757 goto whoosh;
|
|
|
2758 #endif
|
|
|
2759 case SIGQUIT:
|
|
|
2760 #ifdef VMS
|
|
|
2761 send_process (proc, Qnil, (Bufbyte *) "\031", 0,
|
|
|
2762 1); /* ^Y */
|
|
|
2763 goto whoosh;
|
|
|
2764 #endif
|
|
|
2765 case SIGKILL:
|
|
|
2766 #ifdef VMS
|
|
|
2767 sys$forcex (&(XINT (p->pid)), 0, 1);
|
|
|
2768 whoosh:
|
|
|
2769 #endif
|
|
|
2770 flush_pending_output (p->infd);
|
|
|
2771 break;
|
|
|
2772 }
|
|
|
2773
|
|
|
2774 /* If we don't have process groups, send the signal to the immediate
|
|
|
2775 subprocess. That isn't really right, but it's better than any
|
|
|
2776 obvious alternative. */
|
|
|
2777 if (no_pgrp)
|
|
|
2778 {
|
|
|
2779 kill (XINT (p->pid), signo);
|
|
|
2780 return;
|
|
|
2781 }
|
|
|
2782
|
|
|
2783 /* gid may be a pid, or minus a pgrp's number */
|
|
|
2784 #ifdef TIOCSIGSEND
|
|
|
2785 if (current_group)
|
|
|
2786 ioctl (p->infd, TIOCSIGSEND, signo);
|
|
|
2787 else
|
|
|
2788 {
|
|
|
2789 gid = - XINT (p->pid);
|
|
|
2790 kill (gid, signo);
|
|
|
2791 }
|
|
|
2792 #else /* ! defined (TIOCSIGSEND) */
|
|
|
2793 EMACS_KILLPG (-gid, signo);
|
|
|
2794 #endif /* ! defined (TIOCSIGSEND) */
|
|
|
2795 }
|
|
|
2796
|
|
|
2797 DEFUN ("interrupt-process", Finterrupt_process, Sinterrupt_process, 0, 2, 0 /*
|
|
|
2798 Interrupt process PROCESS. May be process or name of one.
|
|
|
2799 Nil or no arg means current buffer's process.
|
|
|
2800 Second arg CURRENT-GROUP non-nil means send signal to
|
|
|
2801 the current process-group of the process's controlling terminal
|
|
|
2802 rather than to the process's own process group.
|
|
|
2803 If the process is a shell, this means interrupt current subjob
|
|
|
2804 rather than the shell.
|
|
|
2805 */ )
|
|
|
2806 (process, current_group)
|
|
|
2807 Lisp_Object process, current_group;
|
|
|
2808 {
|
|
|
2809 /* This function can GC */
|
|
|
2810 process_send_signal (process, SIGINT, !NILP (current_group), 0);
|
|
|
2811 return process;
|
|
|
2812 }
|
|
|
2813
|
|
|
2814 DEFUN ("kill-process", Fkill_process, Skill_process, 0, 2, 0 /*
|
|
|
2815 Kill process PROCESS. May be process or name of one.
|
|
|
2816 See function `interrupt-process' for more details on usage.
|
|
|
2817 */ )
|
|
|
2818 (process, current_group)
|
|
|
2819 Lisp_Object process, current_group;
|
|
|
2820 {
|
|
|
2821 /* This function can GC */
|
|
|
2822 process_send_signal (process, SIGKILL, !NILP (current_group),
|
|
|
2823 0);
|
|
|
2824 return process;
|
|
|
2825 }
|
|
|
2826
|
|
|
2827 DEFUN ("quit-process", Fquit_process, Squit_process, 0, 2, 0 /*
|
|
|
2828 Send QUIT signal to process PROCESS. May be process or name of one.
|
|
|
2829 See function `interrupt-process' for more details on usage.
|
|
|
2830 */ )
|
|
|
2831 (process, current_group)
|
|
|
2832 Lisp_Object process, current_group;
|
|
|
2833 {
|
|
|
2834 /* This function can GC */
|
|
|
2835 process_send_signal (process, SIGQUIT, !NILP (current_group),
|
|
|
2836 0);
|
|
|
2837 return process;
|
|
|
2838 }
|
|
|
2839
|
|
|
2840 DEFUN ("stop-process", Fstop_process, Sstop_process, 0, 2, 0 /*
|
|
|
2841 Stop process PROCESS. May be process or name of one.
|
|
|
2842 See function `interrupt-process' for more details on usage.
|
|
|
2843 */ )
|
|
|
2844 (process, current_group)
|
|
|
2845 Lisp_Object process, current_group;
|
|
|
2846 {
|
|
|
2847 /* This function can GC */
|
|
|
2848 #ifndef SIGTSTP
|
|
|
2849 error ("no SIGTSTP support");
|
|
|
2850 #else
|
|
|
2851 process_send_signal (process, SIGTSTP, !NILP (current_group),
|
|
|
2852 0);
|
|
|
2853 #endif
|
|
|
2854 return process;
|
|
|
2855 }
|
|
|
2856
|
|
|
2857 DEFUN ("continue-process", Fcontinue_process, Scontinue_process, 0, 2, 0 /*
|
|
|
2858 Continue process PROCESS. May be process or name of one.
|
|
|
2859 See function `interrupt-process' for more details on usage.
|
|
|
2860 */ )
|
|
|
2861 (process, current_group)
|
|
|
2862 Lisp_Object process, current_group;
|
|
|
2863 {
|
|
|
2864 /* This function can GC */
|
|
|
2865 #ifdef SIGCONT
|
|
|
2866 process_send_signal (process, SIGCONT, !NILP (current_group),
|
|
|
2867 0);
|
|
|
2868 #else
|
|
|
2869 error ("no SIGCONT support");
|
|
|
2870 #endif
|
|
|
2871 return process;
|
|
|
2872 }
|
|
|
2873
|
|
|
2874 DEFUN ("signal-process", Fsignal_process, Ssignal_process,
|
|
|
2875 2, 2, "nProcess number: \nnSignal code: " /*
|
|
|
2876 Send the process with process id PID the signal with code SIGCODE.
|
|
|
2877 PID must be an integer. The process need not be a child of this Emacs.
|
|
|
2878 SIGCODE may be an integer, or a symbol whose name is a signal name.
|
|
|
2879 */ )
|
|
|
2880 (pid, sigcode)
|
|
|
2881 Lisp_Object pid, sigcode;
|
|
|
2882 {
|
|
|
2883 CHECK_INT (pid);
|
|
|
2884
|
|
|
2885 #define handle_signal(NAME, VALUE) \
|
|
|
2886 else if (!strcmp ((CONST char *) name, NAME)) \
|
|
|
2887 XSETINT (sigcode, VALUE)
|
|
|
2888
|
|
|
2889 if (INTP (sigcode))
|
|
|
2890 ;
|
|
|
2891 else
|
|
|
2892 {
|
|
|
2893 Bufbyte *name;
|
|
|
2894
|
|
|
2895 CHECK_SYMBOL (sigcode);
|
|
|
2896 name = string_data (XSYMBOL (sigcode)->name);
|
|
|
2897
|
|
|
2898 if (0)
|
|
|
2899 ;
|
|
|
2900 #ifdef SIGHUP
|
|
|
2901 handle_signal ("SIGHUP", SIGHUP);
|
|
|
2902 #endif
|
|
|
2903 #ifdef SIGINT
|
|
|
2904 handle_signal ("SIGINT", SIGINT);
|
|
|
2905 #endif
|
|
|
2906 #ifdef SIGQUIT
|
|
|
2907 handle_signal ("SIGQUIT", SIGQUIT);
|
|
|
2908 #endif
|
|
|
2909 #ifdef SIGILL
|
|
|
2910 handle_signal ("SIGILL", SIGILL);
|
|
|
2911 #endif
|
|
|
2912 #ifdef SIGABRT
|
|
|
2913 handle_signal ("SIGABRT", SIGABRT);
|
|
|
2914 #endif
|
|
|
2915 #ifdef SIGEMT
|
|
|
2916 handle_signal ("SIGEMT", SIGEMT);
|
|
|
2917 #endif
|
|
|
2918 #ifdef SIGKILL
|
|
|
2919 handle_signal ("SIGKILL", SIGKILL);
|
|
|
2920 #endif
|
|
|
2921 #ifdef SIGFPE
|
|
|
2922 handle_signal ("SIGFPE", SIGFPE);
|
|
|
2923 #endif
|
|
|
2924 #ifdef SIGBUS
|
|
|
2925 handle_signal ("SIGBUS", SIGBUS);
|
|
|
2926 #endif
|
|
|
2927 #ifdef SIGSEGV
|
|
|
2928 handle_signal ("SIGSEGV", SIGSEGV);
|
|
|
2929 #endif
|
|
|
2930 #ifdef SIGSYS
|
|
|
2931 handle_signal ("SIGSYS", SIGSYS);
|
|
|
2932 #endif
|
|
|
2933 #ifdef SIGPIPE
|
|
|
2934 handle_signal ("SIGPIPE", SIGPIPE);
|
|
|
2935 #endif
|
|
|
2936 #ifdef SIGALRM
|
|
|
2937 handle_signal ("SIGALRM", SIGALRM);
|
|
|
2938 #endif
|
|
|
2939 #ifdef SIGTERM
|
|
|
2940 handle_signal ("SIGTERM", SIGTERM);
|
|
|
2941 #endif
|
|
|
2942 #ifdef SIGURG
|
|
|
2943 handle_signal ("SIGURG", SIGURG);
|
|
|
2944 #endif
|
|
|
2945 #ifdef SIGSTOP
|
|
|
2946 handle_signal ("SIGSTOP", SIGSTOP);
|
|
|
2947 #endif
|
|
|
2948 #ifdef SIGTSTP
|
|
|
2949 handle_signal ("SIGTSTP", SIGTSTP);
|
|
|
2950 #endif
|
|
|
2951 #ifdef SIGCONT
|
|
|
2952 handle_signal ("SIGCONT", SIGCONT);
|
|
|
2953 #endif
|
|
|
2954 #ifdef SIGCHLD
|
|
|
2955 handle_signal ("SIGCHLD", SIGCHLD);
|
|
|
2956 #endif
|
|
|
2957 #ifdef SIGTTIN
|
|
|
2958 handle_signal ("SIGTTIN", SIGTTIN);
|
|
|
2959 #endif
|
|
|
2960 #ifdef SIGTTOU
|
|
|
2961 handle_signal ("SIGTTOU", SIGTTOU);
|
|
|
2962 #endif
|
|
|
2963 #ifdef SIGIO
|
|
|
2964 handle_signal ("SIGIO", SIGIO);
|
|
|
2965 #endif
|
|
|
2966 #ifdef SIGXCPU
|
|
|
2967 handle_signal ("SIGXCPU", SIGXCPU);
|
|
|
2968 #endif
|
|
|
2969 #ifdef SIGXFSZ
|
|
|
2970 handle_signal ("SIGXFSZ", SIGXFSZ);
|
|
|
2971 #endif
|
|
|
2972 #ifdef SIGVTALRM
|
|
|
2973 handle_signal ("SIGVTALRM", SIGVTALRM);
|
|
|
2974 #endif
|
|
|
2975 #ifdef SIGPROF
|
|
|
2976 handle_signal ("SIGPROF", SIGPROF);
|
|
|
2977 #endif
|
|
|
2978 #ifdef SIGWINCH
|
|
|
2979 handle_signal ("SIGWINCH", SIGWINCH);
|
|
|
2980 #endif
|
|
|
2981 #ifdef SIGINFO
|
|
|
2982 handle_signal ("SIGINFO", SIGINFO);
|
|
|
2983 #endif
|
|
|
2984 #ifdef SIGUSR1
|
|
|
2985 handle_signal ("SIGUSR1", SIGUSR1);
|
|
|
2986 #endif
|
|
|
2987 #ifdef SIGUSR2
|
|
|
2988 handle_signal ("SIGUSR2", SIGUSR2);
|
|
|
2989 #endif
|
|
|
2990 else
|
|
|
2991 error ("Undefined signal name %s", name);
|
|
|
2992 }
|
|
|
2993
|
|
|
2994 #undef handle_signal
|
|
|
2995
|
|
|
2996 #ifdef WINDOWSNT
|
|
|
2997 /* Only works for kill-type signals */
|
|
|
2998 return make_int (win32_kill_process (XINT (pid), XINT (sigcode)));
|
|
|
2999 #else
|
|
|
3000 return make_int (kill (XINT (pid), XINT (sigcode)));
|
|
|
3001 #endif
|
|
|
3002 }
|
|
|
3003
|
|
|
3004 DEFUN ("process-send-eof", Fprocess_send_eof, Sprocess_send_eof, 0, 1, 0 /*
|
|
|
3005 Make PROCESS see end-of-file in its input.
|
|
|
3006 PROCESS may be a process, a buffer, the name of a process or buffer, or
|
|
|
3007 nil, indicating the current buffer's process.
|
|
|
3008 If PROCESS is a network connection, or is a process communicating
|
|
|
3009 through a pipe (as opposed to a pty), then you cannot send any more
|
|
|
3010 text to PROCESS after you call this function.
|
|
|
3011 */ )
|
|
|
3012 (process)
|
|
|
3013 Lisp_Object process;
|
|
|
3014 {
|
|
|
3015 /* This function can GC */
|
|
|
3016 Lisp_Object proc;
|
|
|
3017
|
|
|
3018 proc = get_process (process);
|
|
|
3019
|
|
|
3020 /* Make sure the process is really alive. */
|
|
|
3021 if (! EQ (XPROCESS (proc)->status_symbol, Qrun))
|
|
|
3022 error ("Process %s not running",
|
|
|
3023 string_data (XSTRING (XPROCESS (proc)->name)));
|
|
|
3024
|
|
|
3025 #ifdef VMS
|
|
|
3026 send_process (proc, Qnil, (Bufbyte *) "\032", 0, 1); /* ^Z */
|
|
|
3027 #else
|
|
|
3028 if (XPROCESS (proc)->pty_flag)
|
|
|
3029 {
|
|
|
3030 /* #### get_eof_char simply doesn't return the correct character
|
|
|
3031 here. Maybe it is needed to determine the right eof
|
|
|
3032 character in init_process_fds but here it simply screws
|
|
|
3033 things up. */
|
|
|
3034 #if 0
|
|
|
3035 Bufbyte eof_char = get_eof_char (XPROCESS (proc));
|
|
|
3036 send_process (proc, Qnil, &eof_char, 0, 1);
|
|
|
3037 #else
|
|
|
3038 send_process (proc, Qnil, (CONST Bufbyte *) "\004", 0, 1);
|
|
|
3039 #endif
|
|
|
3040 }
|
|
|
3041 else
|
|
|
3042 {
|
|
|
3043 close (XPROCESS (proc)->outfd);
|
|
|
3044 XPROCESS (proc)->outfd = open (NULL_DEVICE, O_WRONLY, 0);
|
|
|
3045 }
|
|
|
3046 #endif /* !VMS */
|
|
|
3047 return process;
|
|
|
3048 }
|
|
|
3049
|
|
|
3050
|
|
|
3051 /************************************************************************/
|
|
|
3052 /* deleting a process */
|
|
|
3053 /************************************************************************/
|
|
|
3054
|
|
|
3055 void
|
|
|
3056 deactivate_process (Lisp_Object proc)
|
|
|
3057 {
|
|
|
3058 int inchannel, outchannel;
|
|
|
3059 struct Lisp_Process *p = XPROCESS (proc);
|
|
|
3060 SIGTYPE (*old_sigpipe) (int) = 0;
|
|
|
3061
|
|
|
3062 inchannel = p->infd;
|
|
|
3063 outchannel = p->outfd;
|
|
|
3064
|
|
|
3065 /* closing the outstream could result in SIGPIPE, so ignore it. */
|
|
|
3066 old_sigpipe =
|
|
|
3067 (SIGTYPE (*) (int)) signal (SIGPIPE, SIG_IGN);
|
|
|
3068 if (!NILP (p->instream))
|
|
|
3069 Lstream_close (XLSTREAM (p->instream));
|
|
|
3070 if (!NILP (p->outstream))
|
|
|
3071 Lstream_close (XLSTREAM (p->outstream));
|
|
|
3072 signal (SIGPIPE, old_sigpipe);
|
|
|
3073
|
|
|
3074 if (inchannel >= 0)
|
|
|
3075 {
|
|
|
3076 /* Beware SIGCHLD hereabouts. */
|
|
|
3077 flush_pending_output (inchannel);
|
|
|
3078 close_descriptor_pair (inchannel, outchannel);
|
|
|
3079 if (!NILP (p->pid))
|
|
|
3080 {
|
|
|
3081 /* It's possible that we got as far in the process-creation
|
|
|
3082 process as creating the descriptors but didn't get so
|
|
|
3083 far as selecting the process for input. In this
|
|
|
3084 case, p->pid is nil: p->pid is set at the same time that
|
|
|
3085 the process is selected for input. */
|
|
|
3086 #ifdef VMS
|
|
|
3087 {
|
|
|
3088 VMS_PROC_STUFF *get_vms_process_pointer (), *vs;
|
|
|
3089 if (outchannel >= 0)
|
|
|
3090 sys$dassgn (outchannel);
|
|
|
3091 vs = get_vms_process_pointer (XINT (p->pid));
|
|
|
3092 if (vs)
|
|
|
3093 give_back_vms_process_stuff (vs);
|
|
|
3094 }
|
|
|
3095 #endif /* VMS */
|
|
|
3096 /* Must call this before setting the file descriptors to 0 */
|
|
|
3097 event_stream_unselect_process (p);
|
|
|
3098 }
|
|
|
3099
|
|
|
3100 p->infd = -1;
|
|
|
3101 p->outfd = -1;
|
|
|
3102 descriptor_to_process[inchannel] = Qnil;
|
|
|
3103 }
|
|
|
3104 }
|
|
|
3105
|
|
|
3106 static void
|
|
|
3107 remove_process (Lisp_Object proc)
|
|
|
3108 {
|
|
|
3109 Vprocess_list = delq_no_quit (proc, Vprocess_list);
|
|
|
3110 Fset_marker (XPROCESS (proc)->mark, Qnil, Qnil);
|
|
|
3111
|
|
|
3112 deactivate_process (proc);
|
|
|
3113 }
|
|
|
3114
|
|
|
3115 DEFUN ("delete-process", Fdelete_process, Sdelete_process, 1, 1, 0 /*
|
|
|
3116 Delete PROCESS: kill it and forget about it immediately.
|
|
|
3117 PROCESS may be a process or the name of one, or a buffer name.
|
|
|
3118 */ )
|
|
|
3119 (proc)
|
|
|
3120 Lisp_Object proc;
|
|
|
3121 {
|
|
|
3122 /* This function can GC */
|
|
|
3123 struct Lisp_Process *p;
|
|
|
3124 proc = get_process (proc);
|
|
|
3125 p = XPROCESS (proc);
|
|
|
3126 if (network_connection_p (proc))
|
|
|
3127 {
|
|
|
3128 p->status_symbol = Qexit;
|
|
|
3129 p->exit_code = 0;
|
|
|
3130 p->core_dumped = 0;
|
|
|
3131 p->tick++;
|
|
|
3132 process_tick++;
|
|
|
3133 }
|
|
|
3134 else if (p->infd >= 0)
|
|
|
3135 {
|
|
|
3136 Fkill_process (proc, Qnil);
|
|
|
3137 /* Do this now, since remove_process will make sigchld_handler do nothing. */
|
|
|
3138 p->status_symbol = Qsignal;
|
|
|
3139 p->exit_code = SIGKILL;
|
|
|
3140 p->core_dumped = 0;
|
|
|
3141 p->tick++;
|
|
|
3142 process_tick++;
|
|
|
3143 status_notify ();
|
|
|
3144 }
|
|
|
3145 remove_process (proc);
|
|
|
3146 return Qnil;
|
|
|
3147 }
|
|
|
3148
|
|
|
3149 /* Kill all processes associated with `buffer'.
|
|
|
3150 If `buffer' is nil, kill all processes */
|
|
|
3151
|
|
|
3152 void
|
|
|
3153 kill_buffer_processes (Lisp_Object buffer)
|
|
|
3154 {
|
|
|
3155 Lisp_Object tail;
|
|
|
3156
|
|
|
3157 for (tail = Vprocess_list; GC_CONSP (tail);
|
|
|
3158 tail = XCDR (tail))
|
|
|
3159 {
|
|
|
3160 Lisp_Object proc = XCAR (tail);
|
|
|
3161 if (GC_PROCESSP (proc)
|
|
|
3162 && (GC_NILP (buffer) || GC_EQ (XPROCESS (proc)->buffer, buffer)))
|
|
|
3163 {
|
|
|
3164 if (network_connection_p (proc))
|
|
|
3165 Fdelete_process (proc);
|
|
|
3166 else if (XPROCESS (proc)->infd >= 0)
|
|
|
3167 process_send_signal (proc, SIGHUP, 0, 1);
|
|
|
3168 }
|
|
|
3169 }
|
|
|
3170 }
|
|
|
3171
|
|
|
3172 #if 0 /* Unused */
|
|
|
3173 int
|
|
|
3174 count_active_processes (void)
|
|
|
3175 {
|
|
|
3176 Lisp_Object tail;
|
|
|
3177 int count = 0;
|
|
|
3178
|
|
|
3179 for (tail = Vprocess_list; CONSP (tail); tail = XCDR (tail))
|
|
|
3180 {
|
|
|
3181 Lisp_Object status = XPROCESS (XCAR (tail))->status_symbol;
|
|
|
3182 if ((EQ (status, Qrun) || EQ (status, Qstop)))
|
|
|
3183 count++;
|
|
|
3184 }
|
|
|
3185
|
|
|
3186 return count;
|
|
|
3187 }
|
|
|
3188 #endif /* Unused */
|
|
|
3189
|
|
|
3190 DEFUN ("process-kill-without-query", Fprocess_kill_without_query,
|
|
|
3191 Sprocess_kill_without_query, 1, 2, 0 /*
|
|
|
3192 Say no query needed if PROCESS is running when Emacs is exited.
|
|
|
3193 Optional second argument if non-nil says to require a query.
|
|
|
3194 Value is t if a query was formerly required.
|
|
|
3195 */ )
|
|
|
3196 (proc, require_query_p)
|
|
|
3197 Lisp_Object proc, require_query_p;
|
|
|
3198 {
|
|
|
3199 int tem;
|
|
|
3200
|
|
|
3201 CHECK_PROCESS (proc);
|
|
|
3202 tem = XPROCESS (proc)->kill_without_query;
|
|
|
3203 XPROCESS (proc)->kill_without_query = NILP (require_query_p);
|
|
|
3204
|
|
|
3205 return (tem ? Qnil : Qt);
|
|
|
3206 }
|
|
|
3207
|
|
|
3208 DEFUN ("process-kill-without-query-p", Fprocess_kill_without_query_p,
|
|
|
3209 Sprocess_kill_without_query_p, 1, 1, 0 /*
|
|
|
3210 Whether PROC will be killed without query if running when emacs is exited.
|
|
|
3211 */ )
|
|
|
3212 (proc)
|
|
|
3213 Lisp_Object proc;
|
|
|
3214 {
|
|
|
3215 CHECK_PROCESS (proc);
|
|
|
3216 return (XPROCESS (proc)->kill_without_query ? Qt : Qnil);
|
|
|
3217 }
|
|
|
3218
|
|
|
3219
|
|
|
3220 /* This is not named init_process in order to avoid a conflict with NS 3.3 */
|
|
|
3221 void
|
|
|
3222 init_xemacs_process (void)
|
|
|
3223 {
|
|
|
3224 int i;
|
|
|
3225
|
|
|
3226 #ifdef SIGCHLD
|
|
|
3227 # ifndef CANNOT_DUMP
|
|
|
3228 if (! noninteractive || initialized)
|
|
|
3229 # endif
|
|
|
3230 signal (SIGCHLD, sigchld_handler);
|
|
|
3231 #endif /* SIGCHLD */
|
|
|
3232
|
|
|
3233 Vprocess_list = Qnil;
|
|
|
3234 for (i = 0; i < MAXDESC; i++)
|
|
|
3235 {
|
|
|
3236 descriptor_to_process[i] = Qnil;
|
|
|
3237 proc_buffered_char[i] = -1;
|
|
|
3238 }
|
|
|
3239 }
|
|
|
3240 #if 0
|
|
|
3241
|
|
|
3242 xxDEFUN ("process-connection", Fprocess_connection, Sprocess_connection,
|
|
|
3243 0, 1, 0 /*
|
|
|
3244 Return the connection type of `PROCESS'. This can be nil (pipe),
|
|
|
3245 t or pty (pty) or stream (socket connection).
|
|
|
3246 */ )
|
|
|
3247 (process)
|
|
|
3248 Lisp_Object process;
|
|
|
3249 {
|
|
|
3250 return XPROCESS (process)->type;
|
|
|
3251 }
|
|
|
3252
|
|
|
3253 #endif /* 0 */
|
|
|
3254
|
|
|
3255 void
|
|
|
3256 syms_of_process (void)
|
|
|
3257 {
|
|
|
3258 defsymbol (&Qprocessp, "processp");
|
|
|
3259 defsymbol (&Qrun, "run");
|
|
|
3260 defsymbol (&Qstop, "stop");
|
|
|
3261 defsymbol (&Qsignal, "signal");
|
|
|
3262 /* Qexit is already defined by syms_of_eval
|
|
|
3263 * defsymbol (&Qexit, "exit");
|
|
|
3264 */
|
|
|
3265 defsymbol (&Qopen, "open");
|
|
|
3266 defsymbol (&Qclosed, "closed");
|
|
|
3267
|
|
|
3268 defsubr (&Sprocessp);
|
|
|
3269 defsubr (&Sget_process);
|
|
|
3270 defsubr (&Sget_buffer_process);
|
|
|
3271 defsubr (&Sdelete_process);
|
|
|
3272 defsubr (&Sprocess_status);
|
|
|
3273 defsubr (&Sprocess_exit_status);
|
|
|
3274 defsubr (&Sprocess_id);
|
|
|
3275 defsubr (&Sprocess_name);
|
|
|
3276 defsubr (&Sprocess_tty_name);
|
|
|
3277 defsubr (&Sprocess_command);
|
|
|
3278 defsubr (&Sset_process_buffer);
|
|
|
3279 defsubr (&Sprocess_buffer);
|
|
|
3280 defsubr (&Sprocess_mark);
|
|
|
3281 defsubr (&Sset_process_filter);
|
|
|
3282 defsubr (&Sprocess_filter);
|
|
|
3283 defsubr (&Sset_process_window_size);
|
|
|
3284 defsubr (&Sset_process_sentinel);
|
|
|
3285 defsubr (&Sprocess_sentinel);
|
|
|
3286 defsubr (&Sprocess_kill_without_query);
|
|
|
3287 defsubr (&Sprocess_kill_without_query_p);
|
|
|
3288 defsubr (&Sprocess_list);
|
|
|
3289 defsubr (&Sstart_process_internal);
|
|
|
3290 #ifdef HAVE_SOCKETS
|
|
|
3291 defsubr (&Sopen_network_stream_internal);
|
|
|
3292 #endif /* HAVE_SOCKETS */
|
|
|
3293 defsubr (&Sprocess_send_region);
|
|
|
3294 defsubr (&Sprocess_send_string);
|
|
|
3295 defsubr (&Sinterrupt_process);
|
|
|
3296 defsubr (&Skill_process);
|
|
|
3297 defsubr (&Squit_process);
|
|
|
3298 defsubr (&Sstop_process);
|
|
|
3299 defsubr (&Scontinue_process);
|
|
|
3300 defsubr (&Sprocess_send_eof);
|
|
|
3301 defsubr (&Ssignal_process);
|
|
|
3302 /* defsubr (&Sprocess_connection); */
|
|
|
3303 }
|
|
|
3304
|
|
|
3305 void
|
|
|
3306 vars_of_process (void)
|
|
|
3307 {
|
|
|
3308 Fprovide (intern ("subprocesses"));
|
|
|
3309 #ifdef HAVE_SOCKETS
|
|
|
3310 Fprovide (intern ("network-streams"));
|
|
|
3311 #endif
|
|
|
3312 staticpro (&Vprocess_list);
|
|
|
3313
|
|
|
3314 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes /*
|
|
|
3315 *Non-nil means delete processes immediately when they exit.
|
|
|
3316 nil means don't delete them until `list-processes' is run.
|
|
|
3317 */ );
|
|
|
3318
|
|
|
3319 delete_exited_processes = 1;
|
|
|
3320
|
|
|
3321 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type /*
|
|
|
3322 Control type of device used to communicate with subprocesses.
|
|
|
3323 Values are nil to use a pipe, or t or `pty' to use a pty.
|
|
|
3324 The value has no effect if the system has no ptys or if all ptys are busy:
|
|
|
3325 then a pipe is used in any case.
|
|
|
3326 The value takes effect when `start-process' is called.
|
|
|
3327 */ );
|
|
|
3328 Vprocess_connection_type = Qt;
|
|
|
3329 }
|
|
|
3330
|
|
|
3331 #endif /* not NO_SUBPROCESSES */
|
