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0
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1 /* -*-C-*-
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2 Client code to allow local and remote editing of files by XEmacs.
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3 Copyright (C) 1989 Free Software Foundation, Inc.
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4 Copyright (C) 1995 Sun Microsystems, Inc.
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149
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5 Copyright (C) 1997 Free Software Foundation, Inc.
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0
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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 Author: Andy Norman (ange@hplb.hpl.hp.com), based on
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25 'etc/emacsclient.c' from the GNU Emacs 18.52 distribution.
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26
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27 Please mail bugs and suggestions to the author at the above address.
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28 */
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29
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30 /*
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31 * This file incorporates new features added by Bob Weiner <weiner@mot.com>,
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32 * Darrell Kindred <dkindred@cmu.edu> and Arup Mukherjee <arup@cmu.edu>.
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33 * GNUATTACH support added by Ben Wing <wing@xemacs.org>.
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34 * Please see the note at the end of the README file for details.
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35 *
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36 * (If gnuserv came bundled with your emacs, the README file is probably
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37 * ../etc/gnuserv.README relative to the directory containing this file)
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38 */
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39
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40 #if 0
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41 /* Hand-munged RCS header */
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42 static char rcsid [] = "!Header: gnuclient.c,v 2.2 95/12/12 01:39:21 wing nene !";
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43 #endif
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44
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45 #include "gnuserv.h"
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46 #include "getopt.h"
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47
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48 #include <stdio.h>
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49 #include <stdlib.h>
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171
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50 #include <sys/types.h>
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51
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149
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52 #ifdef HAVE_STRING_H
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0
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53 #include <string.h>
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149
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54 #endif /* HAVE_STRING_H */
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171
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55
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149
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56 #ifdef HAVE_UNISTD_H
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0
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57 #include <unistd.h>
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149
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58 #endif /* HAVE_UNISTD_H */
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171
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59
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149
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60 #include <signal.h>
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61
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0
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62 #if !defined(SYSV_IPC) && !defined(UNIX_DOMAIN_SOCKETS) && \
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63 !defined(INTERNET_DOMAIN_SOCKETS)
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78
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64 int
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65 main (int argc, char *argv[])
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0
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66 {
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67 fprintf (stderr, "Sorry, the Emacs server is only "
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68 "supported on systems that have\n");
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69 fprintf (stderr, "Unix Domain sockets, Internet Domain "
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70 "sockets or System V IPC.\n");
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71 exit (1);
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72 } /* main */
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73 #else /* SYSV_IPC || UNIX_DOMAIN_SOCKETS || INTERNET_DOMAIN_SOCKETS */
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74
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75 static char cwd[MAXPATHLEN+2]; /* current working directory when calculated */
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76 static char *cp = NULL; /* ptr into valid bit of cwd above */
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77
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108
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78 static pid_t emacs_pid; /* Process id for emacs process */
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79
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149
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80 void initialize_signals (void);
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81
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167
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82 static void
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149
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83 tell_emacs_to_resume (int sig)
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108
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84 {
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149
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85 char buffer[GSERV_BUFSZ+1];
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86 int s; /* socket / msqid to server */
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87 int connect_type; /* CONN_UNIX, CONN_INTERNET, or
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88 ONN_IPC */
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108
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89
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90 /* Why is SYSV so retarded? */
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91 /* We want emacs to realize that we are resuming */
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149
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92 signal(SIGCONT, tell_emacs_to_resume);
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108
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93
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149
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94 connect_type = make_connection (NULL, (u_short) 0, &s);
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108
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95
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153
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96 sprintf(buffer,"(gnuserv-eval '(resume-pid-console %d))", (int)getpid());
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149
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97 send_string(s, buffer);
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98
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108
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99 #ifdef SYSV_IPC
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100 if (connect_type == (int) CONN_IPC)
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101 disconnect_from_ipc_server (s, msgp, FALSE);
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102 #else /* !SYSV_IPC */
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103 if (connect_type != (int) CONN_IPC)
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104 disconnect_from_server (s, FALSE);
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105 #endif /* !SYSV_IPC */
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106 }
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107
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167
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108 static void
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149
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109 pass_signal_to_emacs (int sig)
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108
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110 {
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149
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111 if (kill (emacs_pid, sig) == -1)
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112 {
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113 fprintf (stderr, "gnuattach: Could not pass signal to emacs process\n");
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114 exit (1);
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115 }
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116 initialize_signals ();
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108
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117 }
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118
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149
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119 void
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120 initialize_signals ()
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108
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121 {
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149
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122 /* Set up signal handler to pass relevant signals to emacs process.
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123 We used to send SIGSEGV, SIGBUS, SIGPIPE, SIGILL and others to
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124 Emacs, but I think it's better not to. I can see no reason why
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125 Emacs should SIGSEGV whenever gnuclient SIGSEGV-s, etc. */
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126 signal (SIGHUP, pass_signal_to_emacs);
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127 signal (SIGQUIT, pass_signal_to_emacs);
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128 signal (SIGINT, pass_signal_to_emacs);
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151
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129 #ifdef SIGWINCH
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130 signal (SIGWINCH, pass_signal_to_emacs);
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131 #endif
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108
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132
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133 /* We want emacs to realize that we are resuming */
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149
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134 signal (SIGCONT, tell_emacs_to_resume);
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108
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135 }
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136
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0
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137
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138 /*
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139 get_current_working_directory -- return the cwd.
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140 */
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141 static char *
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142 get_current_working_directory (void)
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143 {
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144 if (cp == NULL)
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145 { /* haven't calculated it yet */
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146 #ifdef BSD
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147 if (getwd (cwd) == 0)
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148 #else /* !BSD */
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149 if (getcwd (cwd,MAXPATHLEN) == NULL)
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150 #endif /* !BSD */
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151 {
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152 perror (progname);
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153 fprintf (stderr, "%s: unable to get current working directory\n",
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154 progname);
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155 exit (1);
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156 } /* if */
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157
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158 /* on some systems, cwd can look like '@machine/' ... */
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159 /* ignore everything before the first '/' */
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160 for (cp = cwd; *cp && *cp != '/'; ++cp)
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161 ;
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162
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163 } /* if */
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164
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165 return cp;
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166
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167 } /* get_current_working_directory */
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168
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169
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170 /*
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171 filename_expand -- try to convert the given filename into a fully-qualified
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172 pathname.
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173 */
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174 static void
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175 filename_expand (char *fullpath, char *filename)
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176 /* fullpath - returned full pathname */
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177 /* filename - filename to expand */
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178 {
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179 int len;
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180
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181 fullpath[0] = '\0';
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182
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183 if (filename[0] && filename[0] != '/')
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184 { /* relative filename */
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185 strcat (fullpath, get_current_working_directory ());
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186 len = strlen (fullpath);
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187
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188 if (len > 0 && fullpath[len-1] == '/') /* trailing slash already? */
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189 ; /* yep */
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190 else
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191 strcat (fullpath, "/"); /* nope, append trailing slash */
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192 } /* if */
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193
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194 strcat (fullpath,filename);
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195
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196 } /* filename_expand */
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197
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151
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198 /* Encase the string in quotes, escape all the backslashes and quotes
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199 in string. */
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167
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200 static char *
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151
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201 clean_string (CONST char *s)
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202 {
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203 int i = 0;
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204 char *p, *res;
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205
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206 for (p = s; *p; p++, i++)
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207 {
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208 if (*p == '\\' || *p == '\"')
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209 ++i;
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210 else if (*p == '\004')
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211 i += 3;
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212 }
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213 p = res = (char *)malloc (i + 2 + 1);
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214 *p++ = '\"';
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215 for (; *s; p++, s++)
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216 {
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217 switch (*s)
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218 {
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219 case '\\':
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220 *p++ = '\\';
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221 *p = '\\';
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222 break;
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223 case '\"':
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224 *p++ = '\\';
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225 *p = '\"';
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226 break;
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227 case '\004':
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228 *p++ = '\\';
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229 *p++ = 'C';
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230 *p++ = '-';
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231 *p = 'd';
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232 break;
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233 default:
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234 *p = *s;
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235 }
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236 }
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237 *p++ = '\"';
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238 *p = '\0';
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239 return res;
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240 }
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241
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242 #define GET_ARGUMENT(var, desc) do { \
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243 if (*(p + 1)) (var) = p + 1; \
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244 else \
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245 { \
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246 if (!argv[++i]) \
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247 { \
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248 fprintf (stderr, "%s: `%s' must be followed by an argument\n", \
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249 progname, desc); \
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250 exit (1); \
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251 } \
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252 (var) = argv[i]; \
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253 } \
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254 over = 1; \
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255 } while (0)
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256
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153
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257 /* A strdup immitation. */
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258 static char *
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259 my_strdup (CONST char *s)
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260 {
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261 char *new = malloc (strlen (s) + 1);
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262 if (new)
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263 strcpy (new, s);
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264 return new;
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265 }
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151
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266
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78
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267 int
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268 main (int argc, char *argv[])
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0
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269 {
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151
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270 int starting_line = 1; /* line to start editing at */
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271 char command[MAXPATHLEN+50]; /* emacs command buffer */
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272 char fullpath[MAXPATHLEN+1]; /* full pathname to file */
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273 char *eval_form = NULL; /* form to evaluate with `-eval' */
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274 char *eval_function = NULL; /* function to evaluate with `-f' */
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275 char *load_library = NULL; /* library to load */
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276 int quick = 0; /* quick edit, don't wait for user to
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277 finish */
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278 int batch = 0; /* batch mode */
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279 int view = 0; /* view only. */
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280 int nofiles = 0;
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281 int errflg = 0; /* option error */
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282 int s; /* socket / msqid to server */
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283 int connect_type; /* CONN_UNIX, CONN_INTERNET, or
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284 * CONN_IPC */
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149
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285 int suppress_windows_system = 0;
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153
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286 char *display = NULL;
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0
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287 #ifdef INTERNET_DOMAIN_SOCKETS
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151
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288 char *hostarg = NULL; /* remote hostname */
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289 char *remotearg;
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290 char thishost[HOSTNAMSZ]; /* this hostname */
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291 char remotepath[MAXPATHLEN+1]; /* remote pathname */
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292 char *path;
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293 int rflg = 0; /* pathname given on cmdline */
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294 char *portarg;
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295 u_short port = 0; /* port to server */
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0
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296 #endif /* INTERNET_DOMAIN_SOCKETS */
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297 #ifdef SYSV_IPC
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151
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298 struct msgbuf *msgp; /* message */
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0
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299 #endif /* SYSV_IPC */
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173
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300 char *tty = NULL;
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151
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301 char buffer[GSERV_BUFSZ + 1]; /* buffer to read pid */
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302 char result[GSERV_BUFSZ + 1];
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303 int i;
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0
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304
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305 #ifdef INTERNET_DOMAIN_SOCKETS
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306 memset (remotepath, 0, sizeof (remotepath));
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307 #endif /* INTERNET_DOMAIN_SOCKETS */
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308
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151
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309 progname = strrchr (argv[0], '/');
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310 if (progname)
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311 ++progname;
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312 else
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313 progname = argv[0];
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0
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314
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259
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315 #ifdef USE_TMPDIR
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316 tmpdir = getenv ("TMPDIR");
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317 #endif
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318 if (!tmpdir)
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319 tmpdir = "/tmp";
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320
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149
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321 display = getenv ("DISPLAY");
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322 if (!display)
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323 suppress_windows_system = 1;
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153
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324 else
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325 display = my_strdup (display);
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149
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326
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151
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327 for (i = 1; argv[i] && !errflg; i++)
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328 {
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329 if (*argv[i] != '-')
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0
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330 break;
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153
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331 else if (*argv[i] == '-'
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332 && (*(argv[i] + 1) == '\0'
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333 || (*(argv[i] + 1) == '-' && *(argv[i] + 2) == '\0')))
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334 {
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335 /* `-' or `--' */
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336 ++i;
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337 break;
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338 }
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339
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340 if (!strcmp (argv[i], "-batch") || !strcmp (argv[i], "--batch"))
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151
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341 batch = 1;
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153
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342 else if (!strcmp (argv[i], "-eval") || !strcmp (argv[i], "--eval"))
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151
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343 {
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344 if (!argv[++i])
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345 {
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346 fprintf (stderr, "%s: `-eval' must be followed by an argument\n",
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347 progname);
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348 exit (1);
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349 }
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350 eval_form = argv[i];
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351 }
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153
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352 else if (!strcmp (argv[i], "-display") || !strcmp (argv[i], "--display"))
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151
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353 {
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354 suppress_windows_system = 0;
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355 if (!argv[++i])
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356 {
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153
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357 fprintf (stderr,
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358 "%s: `-display' must be followed by an argument\n",
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151
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359 progname);
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360 exit (1);
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361 }
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153
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362 if (display)
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363 free (display);
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364 /* no need to strdup. */
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151
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365 display = argv[i];
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366 }
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367 else if (!strcmp (argv[i], "-nw"))
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368 suppress_windows_system = 1;
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369 else
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370 {
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371 /* Iterate over one-letter options. */
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372 char *p;
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373 int over = 0;
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374 for (p = argv[i] + 1; *p && !over; p++)
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375 {
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376 switch (*p)
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377 {
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378 case 'q':
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379 quick = 1;
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380 break;
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381 case 'v':
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382 view = 1;
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383 break;
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384 case 'f':
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385 GET_ARGUMENT (eval_function, "-f");
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386 break;
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387 case 'l':
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388 GET_ARGUMENT (load_library, "-l");
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389 break;
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0
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390 #ifdef INTERNET_DOMAIN_SOCKETS
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151
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391 case 'h':
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392 GET_ARGUMENT (hostarg, "-h");
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393 break;
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394 case 'p':
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395 GET_ARGUMENT (portarg, "-p");
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396 port = atoi (portarg);
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397 break;
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398 case 'r':
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399 GET_ARGUMENT (remotearg, "-r");
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400 strcpy (remotepath, remotearg);
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401 rflg = 1;
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402 break;
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0
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403 #endif /* INTERNET_DOMAIN_SOCKETS */
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151
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404 default:
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405 errflg = 1;
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406 }
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407 } /* for */
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408 } /* else */
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409 } /* for */
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0
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410
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411 if (errflg)
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412 {
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413 fprintf (stderr,
|
|
|
414 #ifdef INTERNET_DOMAIN_SOCKETS
|
|
181
|
415 "usage: %s [-nw] [-display display] [-q] [-v] [-l library]\n"
|
|
|
416 " [-batch] [-f function] [-eval form]\n"
|
|
|
417 " [-h host] [-p port] [-r remote-path] [[+line] file] ...\n",
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151
|
418 #else /* !INTERNET_DOMAIN_SOCKETS */
|
|
181
|
419 "usage: %s [-nw] [-q] [-v] [-l library] [-f function] [-eval form] "
|
|
0
|
420 "[[+line] path] ...\n",
|
|
|
421 #endif /* !INTERNET_DOMAIN_SOCKETS */
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|
|
422 progname);
|
|
|
423 exit (1);
|
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151
|
424 }
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|
|
425 if (batch && argv[i])
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0
|
426 {
|
|
151
|
427 fprintf (stderr, "%s: Cannot specify `-batch' with file names\n",
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|
149
|
428 progname);
|
|
|
429 exit (1);
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|
|
430 }
|
|
153
|
431 if (suppress_windows_system && hostarg)
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|
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432 {
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|
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433 fprintf (stderr, "%s: Remote editing is available only on X\n",
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434 progname);
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|
|
435 exit (1);
|
|
|
436 }
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|
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437
|
|
151
|
438 *result = '\0';
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|
|
439 if (eval_function || eval_form || load_library)
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|
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440 {
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|
|
441 #if defined(INTERNET_DOMAIN_SOCKETS)
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|
|
442 connect_type = make_connection (hostarg, port, &s);
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|
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443 #else
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444 connect_type = make_connection (NULL, (u_short) 0, &s);
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|
|
445 #endif
|
|
|
446 sprintf (command, "(gnuserv-eval%s '(progn ", quick ? "-quickly" : "");
|
|
|
447 send_string (s, command);
|
|
|
448 if (load_library)
|
|
|
449 {
|
|
267
|
450 send_string (s , "(load-library ");
|
|
|
451 send_string (s, clean_string(load_library));
|
|
|
452 send_string (s, ") ");
|
|
151
|
453 }
|
|
|
454 if (eval_form)
|
|
|
455 {
|
|
267
|
456 send_string (s, eval_form);
|
|
151
|
457 }
|
|
|
458 if (eval_function)
|
|
|
459 {
|
|
267
|
460 send_string (s, "(");
|
|
|
461 send_string (s, eval_function);
|
|
|
462 send_string (s, ")");
|
|
151
|
463 }
|
|
|
464 send_string (s, "))");
|
|
|
465 send_string (s, EOT_STR);
|
|
|
466 if (read_line (s, result) == 0)
|
|
|
467 {
|
|
|
468 fprintf (stderr, "%s: Could not read\n", progname);
|
|
|
469 exit (1);
|
|
|
470 }
|
|
|
471 } /* eval_function || eval_form || load_library */
|
|
|
472 else if (batch)
|
|
|
473 {
|
|
|
474 fprintf (stderr, "%s: `-batch' requires an evaluation\n",
|
|
|
475 progname);
|
|
|
476 exit (1);
|
|
|
477 }
|
|
|
478
|
|
|
479 if (!batch)
|
|
|
480 {
|
|
|
481 if (suppress_windows_system)
|
|
|
482 {
|
|
|
483 tty = ttyname (0);
|
|
|
484 if (!tty)
|
|
|
485 {
|
|
|
486 fprintf (stderr, "%s: Not connected to a tty", progname);
|
|
|
487 exit (1);
|
|
|
488 }
|
|
|
489 #if defined(INTERNET_DOMAIN_SOCKETS)
|
|
153
|
490 connect_type = make_connection (hostarg, port, &s);
|
|
151
|
491 #else
|
|
153
|
492 connect_type = make_connection (NULL, (u_short) 0, &s);
|
|
151
|
493 #endif
|
|
153
|
494 send_string (s, "(gnuserv-eval '(emacs-pid))");
|
|
|
495 send_string (s, EOT_STR);
|
|
151
|
496
|
|
153
|
497 if (read_line (s, buffer) == 0)
|
|
|
498 {
|
|
|
499 fprintf (stderr, "%s: Could not establish Emacs procces id\n",
|
|
|
500 progname);
|
|
|
501 exit (1);
|
|
|
502 }
|
|
151
|
503 /* Don't do disconnect_from_server becasue we have already read
|
|
|
504 data, and disconnect doesn't do anything else. */
|
|
|
505 #ifndef INTERNET_DOMAIN_SOCKETS
|
|
153
|
506 if (connect_type == (int) CONN_IPC)
|
|
|
507 disconnect_from_ipc_server (s, msgp, FALSE);
|
|
108
|
508 #endif /* !SYSV_IPC */
|
|
|
509
|
|
153
|
510 emacs_pid = (pid_t)atol(buffer);
|
|
|
511 initialize_signals();
|
|
|
512 } /* suppress_windows_system */
|
|
108
|
513
|
|
151
|
514 #if defined(INTERNET_DOMAIN_SOCKETS)
|
|
|
515 connect_type = make_connection (hostarg, port, &s);
|
|
0
|
516 #else
|
|
151
|
517 connect_type = make_connection (NULL, (u_short) 0, &s);
|
|
0
|
518 #endif
|
|
|
519
|
|
|
520 #ifdef INTERNET_DOMAIN_SOCKETS
|
|
151
|
521 if (connect_type == (int) CONN_INTERNET)
|
|
|
522 {
|
|
|
523 char *ptr;
|
|
|
524 gethostname (thishost, HOSTNAMSZ);
|
|
|
525 if (!rflg)
|
|
|
526 { /* attempt to generate a path
|
|
0
|
527 * to this machine */
|
|
151
|
528 if ((ptr = getenv ("GNU_NODE")) != NULL)
|
|
|
529 /* user specified a path */
|
|
|
530 strcpy (remotepath, ptr);
|
|
|
531 }
|
|
0
|
532 #if 0 /* This is really bogus... re-enable it if you must have it! */
|
|
|
533 #if defined (hp9000s300) || defined (hp9000s800)
|
|
151
|
534 else if (strcmp (thishost,hostarg))
|
|
|
535 { /* try /net/thishost */
|
|
|
536 strcpy (remotepath, "/net/"); /* (this fails using internet
|
|
|
537 addresses) */
|
|
|
538 strcat (remotepath, thishost);
|
|
|
539 }
|
|
0
|
540 #endif
|
|
|
541 #endif
|
|
151
|
542 }
|
|
|
543 else
|
|
|
544 { /* same machines, no need for path */
|
|
|
545 remotepath[0] = '\0'; /* default is the empty path */
|
|
|
546 }
|
|
0
|
547 #endif /* INTERNET_DOMAIN_SOCKETS */
|
|
|
548
|
|
|
549 #ifdef SYSV_IPC
|
|
151
|
550 if ((msgp = (struct msgbuf *)
|
|
|
551 malloc (sizeof *msgp + GSERV_BUFSZ)) == NULL)
|
|
|
552 {
|
|
|
553 fprintf (stderr, "%s: not enough memory for message buffer\n", progname);
|
|
|
554 exit (1);
|
|
|
555 } /* if */
|
|
0
|
556
|
|
151
|
557 msgp->mtext[0] = '\0'; /* ready for later strcats */
|
|
0
|
558 #endif /* SYSV_IPC */
|
|
|
559
|
|
151
|
560 if (suppress_windows_system)
|
|
149
|
561 {
|
|
151
|
562 char *term = getenv ("TERM");
|
|
|
563 if (!term)
|
|
|
564 {
|
|
|
565 fprintf (stderr, "%s: unknown terminal type\n", progname);
|
|
|
566 exit (1);
|
|
|
567 }
|
|
|
568 sprintf (command, "(gnuserv-edit-files '(tty %s %s %d) '(",
|
|
153
|
569 clean_string (tty), clean_string (term), (int)getpid ());
|
|
149
|
570 }
|
|
151
|
571 else /* !suppress_windows_system */
|
|
|
572 {
|
|
|
573 sprintf (command, "(gnuserv-edit-files '(x %s) '(",
|
|
|
574 clean_string (display));
|
|
|
575 } /* !suppress_windows_system */
|
|
|
576 send_string (s, command);
|
|
149
|
577
|
|
151
|
578 if (!argv[i])
|
|
|
579 nofiles = 1;
|
|
0
|
580
|
|
151
|
581 for (; argv[i]; i++)
|
|
0
|
582 {
|
|
151
|
583 if (i < argc - 1 && *argv[i] == '+')
|
|
|
584 starting_line = atoi (argv[i++]);
|
|
|
585 else
|
|
|
586 starting_line = 1;
|
|
|
587 /* If the last argument is +something, treat it as a file. */
|
|
|
588 if (i == argc)
|
|
|
589 {
|
|
|
590 starting_line = 1;
|
|
|
591 --i;
|
|
|
592 }
|
|
|
593 filename_expand (fullpath, argv[i]);
|
|
0
|
594 #ifdef INTERNET_DOMAIN_SOCKETS
|
|
151
|
595 path = malloc (strlen (remotepath) + strlen (fullpath) + 1);
|
|
|
596 sprintf (path, "%s%s", remotepath, fullpath);
|
|
|
597 #else
|
|
153
|
598 path = my_strdup (fullpath);
|
|
0
|
599 #endif
|
|
151
|
600 sprintf (command, "(%d . %s)", starting_line, clean_string (path));
|
|
|
601 send_string (s, command);
|
|
|
602 free (path);
|
|
|
603 } /* for */
|
|
|
604
|
|
|
605 sprintf (command, ")%s%s",
|
|
|
606 (quick || (nofiles && !suppress_windows_system)) ? " 'quick" : "",
|
|
|
607 view ? " 'view" : "");
|
|
149
|
608 send_string (s, command);
|
|
151
|
609 send_string (s, ")");
|
|
0
|
610
|
|
|
611 #ifdef SYSV_IPC
|
|
151
|
612 if (connect_type == (int) CONN_IPC)
|
|
|
613 disconnect_from_ipc_server (s, msgp, FALSE);
|
|
0
|
614 #else /* !SYSV_IPC */
|
|
151
|
615 if (connect_type != (int) CONN_IPC)
|
|
|
616 disconnect_from_server (s, FALSE);
|
|
0
|
617 #endif /* !SYSV_IPC */
|
|
151
|
618 } /* not batch */
|
|
|
619
|
|
|
620 if (batch && !quick)
|
|
|
621 printf ("%s\n", result);
|
|
0
|
622
|
|
78
|
623 return 0;
|
|
0
|
624
|
|
|
625 } /* main */
|
|
|
626
|
|
|
627 #endif /* SYSV_IPC || UNIX_DOMAIN_SOCKETS || INTERNET_DOMAIN_SOCKETS */
|
