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428
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1 /* Process support for Windows NT port of XEMACS.
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2 Copyright (C) 1992, 1995 Free Software Foundation, Inc.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA.
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20
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21 Drew Bliss Oct 14, 1993
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22 Adapted from alarm.c by Tim Fleehart */
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23
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24 /* Adapted for XEmacs by David Hobley <david@spook-le0.cia.com.au> */
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25 /* Synced with FSF Emacs 19.34.6 by Marc Paquette <marcpa@cam.org> */
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26
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27 #include <stdio.h>
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28 #include <stdlib.h>
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29 #include <errno.h>
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30 #include <io.h>
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31 #include <fcntl.h>
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32 #include <signal.h>
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33
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34 /* must include CRT headers *before* config.h */
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440
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35 /* #### I don't believe it - martin */
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428
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36 #include <config.h>
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37 #undef signal
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38 #undef wait
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39 #undef spawnve
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40 #undef select
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41 #undef kill
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42
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43 #include <windows.h>
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44 #include <sys/socket.h>
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45 #ifdef HAVE_A_OUT_H
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46 #include <a.out.h>
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47 #endif
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48 #include "lisp.h"
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49 #include "sysproc.h"
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50 #include "nt.h"
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51 #include "ntheap.h" /* From 19.34.6 */
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52 #include "systime.h"
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53 #include "syssignal.h"
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54 #include "sysfile.h"
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55 #include "syswait.h"
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56 #include "buffer.h"
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57 #include "process.h"
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58 /*#include "w32term.h"*/ /* From 19.34.6: sync in ? --marcpa */
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59
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60 /* #### I'm not going to play with shit. */
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61 #pragma warning (disable:4013 4024 4090)
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62
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63 /* Control whether spawnve quotes arguments as necessary to ensure
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64 correct parsing by child process. Because not all uses of spawnve
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65 are careful about constructing argv arrays, we make this behavior
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66 conditional (off by default). */
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67 Lisp_Object Vwin32_quote_process_args;
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68
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69 /* Control whether create_child causes the process' window to be
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70 hidden. The default is nil. */
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71 Lisp_Object Vwin32_start_process_show_window;
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72
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73 /* Control whether create_child causes the process to inherit Emacs'
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74 console window, or be given a new one of its own. The default is
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75 nil, to allow multiple DOS programs to run on Win95. Having separate
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76 consoles also allows Emacs to cleanly terminate process groups. */
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77 Lisp_Object Vwin32_start_process_share_console;
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78
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79 /* Time to sleep before reading from a subprocess output pipe - this
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80 avoids the inefficiency of frequently reading small amounts of data.
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81 This is primarily necessary for handling DOS processes on Windows 95,
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82 but is useful for Win32 processes on both Win95 and NT as well. */
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83 Lisp_Object Vwin32_pipe_read_delay;
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84
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85 /* Control whether stat() attempts to generate fake but hopefully
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86 "accurate" inode values, by hashing the absolute truenames of files.
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87 This should detect aliasing between long and short names, but still
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88 allows the possibility of hash collisions. */
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89 Lisp_Object Vwin32_generate_fake_inodes;
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90
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91 Lisp_Object Qhigh, Qlow;
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92
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93 extern Lisp_Object Vlisp_EXEC_SUFFIXES;
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94
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95 #ifndef DEBUG_XEMACS
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96 __inline
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97 #endif
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98 void _DebPrint (const char *fmt, ...)
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99 {
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100 #ifdef DEBUG_XEMACS
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101 char buf[1024];
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102 va_list args;
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103
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104 va_start (args, fmt);
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105 vsprintf (buf, fmt, args);
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106 va_end (args);
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107 OutputDebugString (buf);
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108 #endif
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109 }
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110
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111 /* sys_signal moved to nt.c. It's now called msw_signal... */
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112
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113 /* Defined in <process.h> which conflicts with the local copy */
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114 #define _P_NOWAIT 1
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115
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116 /* Child process management list. */
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117 int child_proc_count = 0;
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118 child_process child_procs[ MAX_CHILDREN ];
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119 child_process *dead_child = NULL;
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120
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121 DWORD WINAPI reader_thread (void *arg);
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122
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440
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123 /* Determine if running on Windows 9x and not NT */
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124 static int
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125 windows9x_p (void)
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126 {
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127 return GetVersion () & 0x80000000;
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128 }
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129
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428
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130 /* Find an unused process slot. */
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131 child_process *
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132 new_child (void)
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133 {
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134 child_process *cp;
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135 DWORD id;
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136
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137 for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--)
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138 if (!CHILD_ACTIVE (cp))
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139 goto Initialize;
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140 if (child_proc_count == MAX_CHILDREN)
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141 return NULL;
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142 cp = &child_procs[child_proc_count++];
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143
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144 Initialize:
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145 xzero (*cp);
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146 cp->fd = -1;
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147 cp->pid = -1;
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148 if (cp->procinfo.hProcess)
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149 CloseHandle(cp->procinfo.hProcess);
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150 cp->procinfo.hProcess = NULL;
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151 cp->status = STATUS_READ_ERROR;
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152
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153 /* use manual reset event so that select() will function properly */
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154 cp->char_avail = CreateEvent (NULL, TRUE, FALSE, NULL);
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155 if (cp->char_avail)
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156 {
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157 cp->char_consumed = CreateEvent (NULL, FALSE, FALSE, NULL);
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158 if (cp->char_consumed)
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159 {
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160 cp->thrd = CreateThread (NULL, 1024, reader_thread, cp, 0, &id);
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161 if (cp->thrd)
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162 return cp;
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163 }
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164 }
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165 delete_child (cp);
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166 return NULL;
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167 }
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168
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169 void
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170 delete_child (child_process *cp)
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171 {
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172 int i;
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173
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174 /* Should not be deleting a child that is still needed. */
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175 for (i = 0; i < MAXDESC; i++)
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176 if (fd_info[i].cp == cp)
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177 abort ();
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178
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179 if (!CHILD_ACTIVE (cp))
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180 return;
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181
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182 /* reap thread if necessary */
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183 if (cp->thrd)
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184 {
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185 DWORD rc;
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186
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187 if (GetExitCodeThread (cp->thrd, &rc) && rc == STILL_ACTIVE)
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188 {
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189 /* let the thread exit cleanly if possible */
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190 cp->status = STATUS_READ_ERROR;
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191 SetEvent (cp->char_consumed);
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192 if (WaitForSingleObject (cp->thrd, 1000) != WAIT_OBJECT_0)
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193 {
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194 DebPrint (("delete_child.WaitForSingleObject (thread) failed "
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195 "with %lu for fd %ld\n", GetLastError (), cp->fd));
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196 TerminateThread (cp->thrd, 0);
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197 }
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198 }
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199 CloseHandle (cp->thrd);
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200 cp->thrd = NULL;
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201 }
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202 if (cp->char_avail)
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203 {
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204 CloseHandle (cp->char_avail);
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205 cp->char_avail = NULL;
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206 }
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207 if (cp->char_consumed)
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208 {
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209 CloseHandle (cp->char_consumed);
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210 cp->char_consumed = NULL;
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211 }
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212
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213 /* update child_proc_count (highest numbered slot in use plus one) */
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214 if (cp == child_procs + child_proc_count - 1)
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215 {
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216 for (i = child_proc_count-1; i >= 0; i--)
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217 if (CHILD_ACTIVE (&child_procs[i]))
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218 {
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219 child_proc_count = i + 1;
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220 break;
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221 }
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222 }
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223 if (i < 0)
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224 child_proc_count = 0;
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225 }
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226
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227 /* Find a child by pid. */
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228 static child_process *
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229 find_child_pid (DWORD pid)
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230 {
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231 child_process *cp;
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232
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233 for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--)
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234 if (CHILD_ACTIVE (cp) && pid == cp->pid)
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235 return cp;
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236 return NULL;
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237 }
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238
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239 /* Function to do blocking read of one byte, needed to implement
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240 select. It is only allowed on sockets and pipes. */
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241 static int
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242 _sys_read_ahead (int fd)
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243 {
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244 child_process * cp;
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245 int rc = 0;
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246
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247 if (fd < 0 || fd >= MAXDESC)
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248 return STATUS_READ_ERROR;
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249
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250 cp = fd_info[fd].cp;
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251
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252 if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY)
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253 return STATUS_READ_ERROR;
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254
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255 if ((fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) == 0
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256 || (fd_info[fd].flags & FILE_READ) == 0)
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257 {
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258 /* fd is not a pipe or socket */
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259 abort ();
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260 }
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261
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262 cp->status = STATUS_READ_IN_PROGRESS;
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263
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264 if (fd_info[fd].flags & FILE_PIPE)
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265 {
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266 rc = _read (fd, &cp->chr, sizeof (char));
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267
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268 /* Give subprocess time to buffer some more output for us before
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269 reporting that input is available; we need this because Win95
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270 connects DOS programs to pipes by making the pipe appear to be
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271 the normal console stdout - as a result most DOS programs will
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272 write to stdout without buffering, ie. one character at a
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273 time. Even some Win32 programs do this - "dir" in a command
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274 shell on NT is very slow if we don't do this. */
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275 if (rc > 0)
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276 {
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277 int wait = XINT (Vwin32_pipe_read_delay);
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278
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279 if (wait > 0)
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280 Sleep (wait);
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281 else if (wait < 0)
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282 while (++wait <= 0)
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283 /* Yield remainder of our time slice, effectively giving a
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284 temporary priority boost to the child process. */
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285 Sleep (0);
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286 }
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287 }
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288
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289 if (rc == sizeof (char))
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290 cp->status = STATUS_READ_SUCCEEDED;
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291 else
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292 cp->status = STATUS_READ_FAILED;
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293
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294 return cp->status;
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295 }
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296
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297 /* Thread proc for child process and socket reader threads. Each thread
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298 is normally blocked until woken by select() to check for input by
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299 reading one char. When the read completes, char_avail is signalled
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300 to wake up the select emulator and the thread blocks itself again. */
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301 DWORD WINAPI
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302 reader_thread (void *arg)
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303 {
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304 child_process *cp;
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305
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306 /* Our identity */
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307 cp = (child_process *)arg;
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308
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309 /* <matts@tibco.com> - I think the test below is wrong - we don't
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310 want to wait for someone to signal char_consumed, as we haven't
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311 read anything for them to consume yet! */
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312
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313 /*
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314 if (cp == NULL ||
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315 WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0)
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316 */
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317
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318 if (cp == NULL)
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319 {
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320 return 1;
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321 }
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322
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323 for (;;)
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324 {
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325 int rc;
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326
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327 rc = _sys_read_ahead (cp->fd);
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328
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329 /* The name char_avail is a misnomer - it really just means the
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330 read-ahead has completed, whether successfully or not. */
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331 if (!SetEvent (cp->char_avail))
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332 {
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333 DebPrint (("reader_thread.SetEvent failed with %lu for fd %ld\n",
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334 GetLastError (), cp->fd));
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335 return 1;
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336 }
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337
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338 if (rc == STATUS_READ_ERROR)
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339 {
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340 /* We are finished, so clean up handles and set to NULL so
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341 that CHILD_ACTIVE will see what is going on */
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342 if (cp->char_avail) {
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343 CloseHandle (cp->char_avail);
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344 cp->char_avail = NULL;
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345 }
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346 if (cp->thrd) {
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347 CloseHandle (cp->thrd);
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348 cp->thrd = NULL;
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349 }
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350 if (cp->char_consumed) {
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351 CloseHandle(cp->char_consumed);
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352 cp->char_consumed = NULL;
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353 }
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354 if (cp->procinfo.hProcess)
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355 {
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356 CloseHandle (cp->procinfo.hProcess);
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357 cp->procinfo.hProcess=NULL;
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358 }
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359 return 1;
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360 }
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361
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362 /* If the read died, the child has died so let the thread die */
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363 if (rc == STATUS_READ_FAILED)
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364 break;
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365
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366 /* Wait until our input is acknowledged before reading again */
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367 if (WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0)
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368 {
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369 DebPrint (("reader_thread.WaitForSingleObject failed with "
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370 "%lu for fd %ld\n", GetLastError (), cp->fd));
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371 break;
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372 }
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373 }
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374 /* We are finished, so clean up handles and set to NULL so that
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375 CHILD_ACTIVE will see what is going on */
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376 if (cp->char_avail) {
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377 CloseHandle (cp->char_avail);
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378 cp->char_avail = NULL;
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379 }
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380 if (cp->thrd) {
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381 CloseHandle (cp->thrd);
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382 cp->thrd = NULL;
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383 }
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384 if (cp->char_consumed) {
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385 CloseHandle(cp->char_consumed);
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386 cp->char_consumed = NULL;
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387 }
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388 if (cp->procinfo.hProcess)
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389 {
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390 CloseHandle (cp->procinfo.hProcess);
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391 cp->procinfo.hProcess=NULL;
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392 }
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393
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394 return 0;
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395 }
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396
|
|
|
397 /* To avoid Emacs changing directory, we just record here the directory
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398 the new process should start in. This is set just before calling
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399 sys_spawnve, and is not generally valid at any other time. */
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|
|
400 static const char * process_dir;
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401
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402 static BOOL
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403 create_child (CONST char *exe, char *cmdline, char *env,
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|
|
404 int * pPid, child_process *cp)
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|
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405 {
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406 STARTUPINFO start;
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407 SECURITY_ATTRIBUTES sec_attrs;
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|
|
408 SECURITY_DESCRIPTOR sec_desc;
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|
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409 char dir[ MAXPATHLEN ];
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410
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|
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411 if (cp == NULL) abort ();
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412
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|
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413 xzero (start);
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|
|
414 start.cb = sizeof (start);
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415
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|
|
416 #ifdef HAVE_NTGUI
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|
|
417 if (NILP (Vwin32_start_process_show_window))
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|
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418 start.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
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|
419 else
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420 start.dwFlags = STARTF_USESTDHANDLES;
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|
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421 start.wShowWindow = SW_HIDE;
|
|
|
422
|
|
|
423 start.hStdInput = GetStdHandle (STD_INPUT_HANDLE);
|
|
|
424 start.hStdOutput = GetStdHandle (STD_OUTPUT_HANDLE);
|
|
|
425 start.hStdError = GetStdHandle (STD_ERROR_HANDLE);
|
|
|
426 #endif /* HAVE_NTGUI */
|
|
|
427
|
|
|
428 /* Explicitly specify no security */
|
|
|
429 if (!InitializeSecurityDescriptor (&sec_desc, SECURITY_DESCRIPTOR_REVISION))
|
|
|
430 goto EH_Fail;
|
|
|
431 if (!SetSecurityDescriptorDacl (&sec_desc, TRUE, NULL, FALSE))
|
|
|
432 goto EH_Fail;
|
|
|
433 sec_attrs.nLength = sizeof (sec_attrs);
|
|
|
434 sec_attrs.lpSecurityDescriptor = &sec_desc;
|
|
|
435 sec_attrs.bInheritHandle = FALSE;
|
|
|
436
|
|
|
437 strcpy (dir, process_dir);
|
|
|
438 unixtodos_filename (dir);
|
|
|
439
|
|
|
440 if (!CreateProcess (exe, cmdline, &sec_attrs, NULL, TRUE,
|
|
|
441 (!NILP (Vwin32_start_process_share_console)
|
|
|
442 ? CREATE_NEW_PROCESS_GROUP
|
|
|
443 : CREATE_NEW_CONSOLE),
|
|
|
444 env, dir,
|
|
|
445 &start, &cp->procinfo))
|
|
|
446 goto EH_Fail;
|
|
|
447
|
|
|
448 cp->pid = (int) cp->procinfo.dwProcessId;
|
|
|
449
|
|
|
450 CloseHandle (cp->procinfo.hThread);
|
|
|
451 CloseHandle (cp->procinfo.hProcess);
|
|
|
452 cp->procinfo.hThread=NULL;
|
|
|
453 cp->procinfo.hProcess=NULL;
|
|
|
454
|
|
432
|
455 /* pid must fit in a Lisp_Int */
|
|
428
|
456
|
|
|
457
|
|
|
458 *pPid = cp->pid;
|
|
|
459
|
|
|
460 return TRUE;
|
|
|
461
|
|
|
462 EH_Fail:
|
|
|
463 DebPrint (("create_child.CreateProcess failed: %ld\n", GetLastError()););
|
|
|
464 return FALSE;
|
|
|
465 }
|
|
|
466
|
|
|
467 #ifndef __MINGW32__
|
|
|
468 /* Return pointer to section header for section containing the given
|
|
|
469 relative virtual address. */
|
|
|
470 static IMAGE_SECTION_HEADER *
|
|
|
471 rva_to_section (DWORD rva, IMAGE_NT_HEADERS * nt_header)
|
|
|
472 {
|
|
|
473 PIMAGE_SECTION_HEADER section;
|
|
|
474 int i;
|
|
|
475
|
|
|
476 section = IMAGE_FIRST_SECTION (nt_header);
|
|
|
477
|
|
|
478 for (i = 0; i < nt_header->FileHeader.NumberOfSections; i++)
|
|
|
479 {
|
|
|
480 if (rva >= section->VirtualAddress
|
|
|
481 && rva < section->VirtualAddress + section->SizeOfRawData)
|
|
|
482 return section;
|
|
|
483 section++;
|
|
|
484 }
|
|
|
485 return NULL;
|
|
|
486 }
|
|
|
487 #endif
|
|
|
488
|
|
|
489 void
|
|
|
490 win32_executable_type (CONST char * filename, int * is_dos_app, int * is_cygnus_app)
|
|
|
491 {
|
|
|
492 file_data executable;
|
|
|
493 char * p;
|
|
|
494
|
|
|
495 /* Default values in case we can't tell for sure. */
|
|
|
496 *is_dos_app = FALSE;
|
|
|
497 *is_cygnus_app = FALSE;
|
|
|
498
|
|
|
499 if (!open_input_file (&executable, filename))
|
|
|
500 return;
|
|
|
501
|
|
|
502 p = strrchr (filename, '.');
|
|
|
503
|
|
|
504 /* We can only identify DOS .com programs from the extension. */
|
|
|
505 if (p && stricmp (p, ".com") == 0)
|
|
|
506 *is_dos_app = TRUE;
|
|
|
507 else if (p && (stricmp (p, ".bat") == 0 ||
|
|
|
508 stricmp (p, ".cmd") == 0))
|
|
|
509 {
|
|
|
510 /* A DOS shell script - it appears that CreateProcess is happy to
|
|
|
511 accept this (somewhat surprisingly); presumably it looks at
|
|
|
512 COMSPEC to determine what executable to actually invoke.
|
|
|
513 Therefore, we have to do the same here as well. */
|
|
|
514 /* Actually, I think it uses the program association for that
|
|
|
515 extension, which is defined in the registry. */
|
|
|
516 p = egetenv ("COMSPEC");
|
|
|
517 if (p)
|
|
|
518 win32_executable_type (p, is_dos_app, is_cygnus_app);
|
|
|
519 }
|
|
|
520 else
|
|
|
521 {
|
|
|
522 /* Look for DOS .exe signature - if found, we must also check that
|
|
|
523 it isn't really a 16- or 32-bit Windows exe, since both formats
|
|
|
524 start with a DOS program stub. Note that 16-bit Windows
|
|
|
525 executables use the OS/2 1.x format. */
|
|
|
526
|
|
|
527 #ifdef __MINGW32__
|
|
|
528 /* mingw32 doesn't have enough headers to detect cygwin
|
|
|
529 apps, just do what we can. */
|
|
|
530 FILHDR * exe_header;
|
|
|
531
|
|
|
532 exe_header = (FILHDR*) executable.file_base;
|
|
|
533 if (exe_header->e_magic != DOSMAGIC)
|
|
|
534 goto unwind;
|
|
|
535
|
|
|
536 if ((char *) exe_header->e_lfanew > (char *) executable.size)
|
|
|
537 {
|
|
|
538 /* Some dos headers (pkunzip) have bogus e_lfanew fields. */
|
|
|
539 *is_dos_app = TRUE;
|
|
|
540 }
|
|
|
541 else if (exe_header->nt_signature != NT_SIGNATURE)
|
|
|
542 {
|
|
|
543 *is_dos_app = TRUE;
|
|
|
544 }
|
|
|
545 #else
|
|
|
546 IMAGE_DOS_HEADER * dos_header;
|
|
|
547 IMAGE_NT_HEADERS * nt_header;
|
|
|
548
|
|
|
549 dos_header = (PIMAGE_DOS_HEADER) executable.file_base;
|
|
|
550 if (dos_header->e_magic != IMAGE_DOS_SIGNATURE)
|
|
|
551 goto unwind;
|
|
|
552
|
|
|
553 nt_header = (PIMAGE_NT_HEADERS) ((char *) dos_header + dos_header->e_lfanew);
|
|
|
554
|
|
|
555 if ((char *) nt_header > (char *) dos_header + executable.size)
|
|
|
556 {
|
|
|
557 /* Some dos headers (pkunzip) have bogus e_lfanew fields. */
|
|
|
558 *is_dos_app = TRUE;
|
|
|
559 }
|
|
|
560 else if (nt_header->Signature != IMAGE_NT_SIGNATURE &&
|
|
|
561 LOWORD (nt_header->Signature) != IMAGE_OS2_SIGNATURE)
|
|
|
562 {
|
|
|
563 *is_dos_app = TRUE;
|
|
|
564 }
|
|
|
565 else if (nt_header->Signature == IMAGE_NT_SIGNATURE)
|
|
|
566 {
|
|
|
567 /* Look for cygwin.dll in DLL import list. */
|
|
|
568 IMAGE_DATA_DIRECTORY import_dir =
|
|
|
569 nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT];
|
|
|
570 IMAGE_IMPORT_DESCRIPTOR * imports;
|
|
|
571 IMAGE_SECTION_HEADER * section;
|
|
|
572
|
|
|
573 section = rva_to_section (import_dir.VirtualAddress, nt_header);
|
|
|
574 imports = RVA_TO_PTR (import_dir.VirtualAddress, section, executable);
|
|
|
575
|
|
|
576 for ( ; imports->Name; imports++)
|
|
|
577 {
|
|
|
578 char * dllname = RVA_TO_PTR (imports->Name, section, executable);
|
|
|
579
|
|
|
580 if (strcmp (dllname, "cygwin.dll") == 0)
|
|
|
581 {
|
|
|
582 *is_cygnus_app = TRUE;
|
|
|
583 break;
|
|
|
584 }
|
|
|
585 }
|
|
|
586 }
|
|
|
587 #endif
|
|
|
588 }
|
|
|
589
|
|
|
590 unwind:
|
|
|
591 close_file_data (&executable);
|
|
|
592 }
|
|
|
593
|
|
|
594 int
|
|
|
595 compare_env (const void *strp1, const void *strp2)
|
|
|
596 {
|
|
|
597 const char *str1 = *(const char**)strp1, *str2 = *(const char**)strp2;
|
|
|
598
|
|
|
599 while (*str1 && *str2 && *str1 != '=' && *str2 != '=')
|
|
|
600 {
|
|
|
601 if ((*str1) > (*str2))
|
|
|
602 return 1;
|
|
|
603 else if ((*str1) < (*str2))
|
|
|
604 return -1;
|
|
|
605 str1++, str2++;
|
|
|
606 }
|
|
|
607
|
|
|
608 if (*str1 == '=' && *str2 == '=')
|
|
|
609 return 0;
|
|
|
610 else if (*str1 == '=')
|
|
|
611 return -1;
|
|
|
612 else
|
|
|
613 return 1;
|
|
|
614 }
|
|
|
615
|
|
|
616 void
|
|
|
617 merge_and_sort_env (char **envp1, char **envp2, char **new_envp)
|
|
|
618 {
|
|
|
619 char **optr, **nptr;
|
|
|
620 int num;
|
|
|
621
|
|
|
622 nptr = new_envp;
|
|
|
623 optr = envp1;
|
|
|
624 while (*optr)
|
|
|
625 *nptr++ = *optr++;
|
|
|
626 num = optr - envp1;
|
|
|
627
|
|
|
628 optr = envp2;
|
|
|
629 while (*optr)
|
|
|
630 *nptr++ = *optr++;
|
|
|
631 num += optr - envp2;
|
|
|
632
|
|
|
633 qsort (new_envp, num, sizeof (char *), compare_env);
|
|
|
634
|
|
|
635 *nptr = NULL;
|
|
|
636 }
|
|
|
637
|
|
|
638 /* When a new child process is created we need to register it in our list,
|
|
|
639 so intercept spawn requests. */
|
|
|
640 int
|
|
|
641 sys_spawnve (int mode, CONST char *cmdname,
|
|
|
642 CONST char * CONST *argv, CONST char *CONST *envp)
|
|
|
643 {
|
|
|
644 Lisp_Object program, full;
|
|
|
645 char *cmdline, *env, *parg, **targ;
|
|
|
646 int arglen, numenv;
|
|
|
647 int pid;
|
|
|
648 child_process *cp;
|
|
|
649 int is_dos_app, is_cygnus_app;
|
|
|
650 int do_quoting = 0;
|
|
|
651 char escape_char = 0;
|
|
|
652 /* We pass our process ID to our children by setting up an environment
|
|
|
653 variable in their environment. */
|
|
|
654 char ppid_env_var_buffer[64];
|
|
|
655 char *extra_env[] = {ppid_env_var_buffer, NULL};
|
|
|
656 struct gcpro gcpro1;
|
|
|
657
|
|
|
658 /* We don't care about the other modes */
|
|
|
659 if (mode != _P_NOWAIT)
|
|
|
660 {
|
|
|
661 errno = EINVAL;
|
|
|
662 return -1;
|
|
|
663 }
|
|
|
664
|
|
|
665 /* Handle executable names without an executable suffix. */
|
|
|
666 program = make_string (cmdname, strlen (cmdname));
|
|
|
667 GCPRO1 (program);
|
|
|
668 if (NILP (Ffile_executable_p (program)))
|
|
|
669 {
|
|
|
670 full = Qnil;
|
|
|
671 locate_file (Vexec_path, program, Vlisp_EXEC_SUFFIXES, &full, 1);
|
|
|
672 if (NILP (full))
|
|
|
673 {
|
|
|
674 UNGCPRO;
|
|
|
675 errno = EINVAL;
|
|
|
676 return -1;
|
|
|
677 }
|
|
440
|
678 TO_EXTERNAL_FORMAT (LISP_STRING, full,
|
|
|
679 C_STRING_ALLOCA, cmdname,
|
|
|
680 Qfile_name);
|
|
428
|
681 }
|
|
|
682 else
|
|
|
683 {
|
|
|
684 (char*)cmdname = alloca (strlen (argv[0]) + 1);
|
|
|
685 strcpy ((char*)cmdname, argv[0]);
|
|
|
686 }
|
|
|
687 UNGCPRO;
|
|
|
688
|
|
|
689 /* make sure argv[0] and cmdname are both in DOS format */
|
|
|
690 unixtodos_filename ((char*)cmdname);
|
|
|
691 /* #### KLUDGE */
|
|
|
692 ((CONST char**)argv)[0] = cmdname;
|
|
|
693
|
|
|
694 /* Determine whether program is a 16-bit DOS executable, or a Win32
|
|
|
695 executable that is implicitly linked to the Cygnus dll (implying it
|
|
|
696 was compiled with the Cygnus GNU toolchain and hence relies on
|
|
|
697 cygwin.dll to parse the command line - we use this to decide how to
|
|
|
698 escape quote chars in command line args that must be quoted). */
|
|
|
699 win32_executable_type (cmdname, &is_dos_app, &is_cygnus_app);
|
|
|
700
|
|
|
701 /* On Windows 95, if cmdname is a DOS app, we invoke a helper
|
|
|
702 application to start it by specifying the helper app as cmdname,
|
|
|
703 while leaving the real app name as argv[0]. */
|
|
|
704 if (is_dos_app)
|
|
|
705 {
|
|
|
706 cmdname = alloca (MAXPATHLEN);
|
|
|
707 if (egetenv ("CMDPROXY"))
|
|
|
708 strcpy ((char*)cmdname, egetenv ("CMDPROXY"));
|
|
|
709 else
|
|
|
710 {
|
|
|
711 strcpy ((char*)cmdname, XSTRING_DATA (Vinvocation_directory));
|
|
|
712 strcat ((char*)cmdname, "cmdproxy.exe");
|
|
|
713 }
|
|
|
714 unixtodos_filename ((char*)cmdname);
|
|
|
715 }
|
|
|
716
|
|
|
717 /* we have to do some conjuring here to put argv and envp into the
|
|
|
718 form CreateProcess wants... argv needs to be a space separated/null
|
|
|
719 terminated list of parameters, and envp is a null
|
|
|
720 separated/double-null terminated list of parameters.
|
|
|
721
|
|
|
722 Additionally, zero-length args and args containing whitespace or
|
|
|
723 quote chars need to be wrapped in double quotes - for this to work,
|
|
|
724 embedded quotes need to be escaped as well. The aim is to ensure
|
|
|
725 the child process reconstructs the argv array we start with
|
|
|
726 exactly, so we treat quotes at the beginning and end of arguments
|
|
|
727 as embedded quotes.
|
|
|
728
|
|
|
729 The Win32 GNU-based library from Cygnus doubles quotes to escape
|
|
|
730 them, while MSVC uses backslash for escaping. (Actually the MSVC
|
|
|
731 startup code does attempt to recognize doubled quotes and accept
|
|
|
732 them, but gets it wrong and ends up requiring three quotes to get a
|
|
|
733 single embedded quote!) So by default we decide whether to use
|
|
|
734 quote or backslash as the escape character based on whether the
|
|
|
735 binary is apparently a Cygnus compiled app.
|
|
|
736
|
|
|
737 Note that using backslash to escape embedded quotes requires
|
|
|
738 additional special handling if an embedded quote is already
|
|
|
739 preceded by backslash, or if an arg requiring quoting ends with
|
|
|
740 backslash. In such cases, the run of escape characters needs to be
|
|
|
741 doubled. For consistency, we apply this special handling as long
|
|
|
742 as the escape character is not quote.
|
|
|
743
|
|
|
744 Since we have no idea how large argv and envp are likely to be we
|
|
|
745 figure out list lengths on the fly and allocate them. */
|
|
|
746
|
|
|
747 if (!NILP (Vwin32_quote_process_args))
|
|
|
748 {
|
|
|
749 do_quoting = 1;
|
|
|
750 /* Override escape char by binding win32-quote-process-args to
|
|
|
751 desired character, or use t for auto-selection. */
|
|
|
752 if (INTP (Vwin32_quote_process_args))
|
|
|
753 escape_char = XINT (Vwin32_quote_process_args);
|
|
|
754 else
|
|
|
755 escape_char = is_cygnus_app ? '"' : '\\';
|
|
|
756 }
|
|
|
757
|
|
|
758 /* do argv... */
|
|
|
759 arglen = 0;
|
|
|
760 targ = (char**)argv;
|
|
|
761 while (*targ)
|
|
|
762 {
|
|
|
763 char * p = *targ;
|
|
|
764 int need_quotes = 0;
|
|
|
765 int escape_char_run = 0;
|
|
|
766
|
|
|
767 if (*p == 0)
|
|
|
768 need_quotes = 1;
|
|
|
769 for ( ; *p; p++)
|
|
|
770 {
|
|
|
771 if (*p == '"')
|
|
|
772 {
|
|
|
773 /* allow for embedded quotes to be escaped */
|
|
|
774 arglen++;
|
|
|
775 need_quotes = 1;
|
|
|
776 /* handle the case where the embedded quote is already escaped */
|
|
|
777 if (escape_char_run > 0)
|
|
|
778 {
|
|
|
779 /* To preserve the arg exactly, we need to double the
|
|
|
780 preceding escape characters (plus adding one to
|
|
|
781 escape the quote character itself). */
|
|
|
782 arglen += escape_char_run;
|
|
|
783 }
|
|
|
784 }
|
|
|
785 else if (*p == ' ' || *p == '\t')
|
|
|
786 {
|
|
|
787 need_quotes = 1;
|
|
|
788 }
|
|
|
789
|
|
|
790 if (*p == escape_char && escape_char != '"')
|
|
|
791 escape_char_run++;
|
|
|
792 else
|
|
|
793 escape_char_run = 0;
|
|
|
794 }
|
|
|
795 if (need_quotes)
|
|
|
796 {
|
|
|
797 arglen += 2;
|
|
|
798 /* handle the case where the arg ends with an escape char - we
|
|
|
799 must not let the enclosing quote be escaped. */
|
|
|
800 if (escape_char_run > 0)
|
|
|
801 arglen += escape_char_run;
|
|
|
802 }
|
|
|
803 arglen += strlen (*targ++) + 1;
|
|
|
804 }
|
|
|
805 cmdline = alloca (arglen);
|
|
|
806 targ = (char**)argv;
|
|
|
807 parg = cmdline;
|
|
|
808 while (*targ)
|
|
|
809 {
|
|
|
810 char * p = *targ;
|
|
|
811 int need_quotes = 0;
|
|
|
812
|
|
|
813 if (*p == 0)
|
|
|
814 need_quotes = 1;
|
|
|
815
|
|
|
816 if (do_quoting)
|
|
|
817 {
|
|
|
818 for ( ; *p; p++)
|
|
|
819 if (*p == ' ' || *p == '\t' || *p == '"')
|
|
|
820 need_quotes = 1;
|
|
|
821 }
|
|
|
822 if (need_quotes)
|
|
|
823 {
|
|
|
824 int escape_char_run = 0;
|
|
|
825 char * first;
|
|
|
826 char * last;
|
|
|
827
|
|
|
828 p = *targ;
|
|
|
829 first = p;
|
|
|
830 last = p + strlen (p) - 1;
|
|
|
831 *parg++ = '"';
|
|
|
832 #if 0
|
|
|
833 /* This version does not escape quotes if they occur at the
|
|
|
834 beginning or end of the arg - this could lead to incorrect
|
|
|
835 behavior when the arg itself represents a command line
|
|
|
836 containing quoted args. I believe this was originally done
|
|
|
837 as a hack to make some things work, before
|
|
|
838 `win32-quote-process-args' was added. */
|
|
|
839 while (*p)
|
|
|
840 {
|
|
|
841 if (*p == '"' && p > first && p < last)
|
|
|
842 *parg++ = escape_char; /* escape embedded quotes */
|
|
|
843 *parg++ = *p++;
|
|
|
844 }
|
|
|
845 #else
|
|
|
846 for ( ; *p; p++)
|
|
|
847 {
|
|
|
848 if (*p == '"')
|
|
|
849 {
|
|
|
850 /* double preceding escape chars if any */
|
|
|
851 while (escape_char_run > 0)
|
|
|
852 {
|
|
|
853 *parg++ = escape_char;
|
|
|
854 escape_char_run--;
|
|
|
855 }
|
|
|
856 /* escape all quote chars, even at beginning or end */
|
|
|
857 *parg++ = escape_char;
|
|
|
858 }
|
|
|
859 *parg++ = *p;
|
|
|
860
|
|
|
861 if (*p == escape_char && escape_char != '"')
|
|
|
862 escape_char_run++;
|
|
|
863 else
|
|
|
864 escape_char_run = 0;
|
|
|
865 }
|
|
|
866 /* double escape chars before enclosing quote */
|
|
|
867 while (escape_char_run > 0)
|
|
|
868 {
|
|
|
869 *parg++ = escape_char;
|
|
|
870 escape_char_run--;
|
|
|
871 }
|
|
|
872 #endif
|
|
|
873 *parg++ = '"';
|
|
|
874 }
|
|
|
875 else
|
|
|
876 {
|
|
|
877 strcpy (parg, *targ);
|
|
|
878 parg += strlen (*targ);
|
|
|
879 }
|
|
|
880 *parg++ = ' ';
|
|
|
881 targ++;
|
|
|
882 }
|
|
|
883 *--parg = '\0';
|
|
|
884
|
|
|
885 /* and envp... */
|
|
|
886 arglen = 1;
|
|
|
887 targ = (char**)envp;
|
|
|
888 numenv = 1; /* for end null */
|
|
|
889 while (*targ)
|
|
|
890 {
|
|
|
891 arglen += strlen (*targ++) + 1;
|
|
|
892 numenv++;
|
|
|
893 }
|
|
|
894 /* extra env vars... */
|
|
|
895 sprintf (ppid_env_var_buffer, "__PARENT_PROCESS_ID=%d",
|
|
|
896 GetCurrentProcessId ());
|
|
|
897 arglen += strlen (ppid_env_var_buffer) + 1;
|
|
|
898 numenv++;
|
|
|
899
|
|
|
900 /* merge env passed in and extra env into one, and sort it. */
|
|
|
901 targ = (char **) alloca (numenv * sizeof (char *));
|
|
|
902 merge_and_sort_env ((char**)envp, extra_env, targ);
|
|
|
903
|
|
|
904 /* concatenate env entries. */
|
|
|
905 env = alloca (arglen);
|
|
|
906 parg = env;
|
|
|
907 while (*targ)
|
|
|
908 {
|
|
|
909 strcpy (parg, *targ);
|
|
|
910 parg += strlen (*targ++);
|
|
|
911 *parg++ = '\0';
|
|
|
912 }
|
|
|
913 *parg++ = '\0';
|
|
|
914 *parg = '\0';
|
|
|
915
|
|
|
916 cp = new_child ();
|
|
|
917 if (cp == NULL)
|
|
|
918 {
|
|
|
919 errno = EAGAIN;
|
|
|
920 return -1;
|
|
|
921 }
|
|
|
922
|
|
|
923 /* Now create the process. */
|
|
|
924 if (!create_child (cmdname, cmdline, env, &pid, cp))
|
|
|
925 {
|
|
|
926 delete_child (cp);
|
|
|
927 errno = ENOEXEC;
|
|
|
928 return -1;
|
|
|
929 }
|
|
|
930
|
|
|
931 return pid;
|
|
|
932 }
|
|
|
933
|
|
|
934 /* Substitute for certain kill () operations */
|
|
|
935
|
|
|
936 static BOOL CALLBACK
|
|
|
937 find_child_console (HWND hwnd, child_process * cp)
|
|
|
938 {
|
|
|
939 DWORD thread_id;
|
|
|
940 DWORD process_id;
|
|
|
941
|
|
|
942 thread_id = GetWindowThreadProcessId (hwnd, &process_id);
|
|
|
943 if (process_id == cp->procinfo.dwProcessId)
|
|
|
944 {
|
|
|
945 char window_class[32];
|
|
|
946
|
|
|
947 GetClassName (hwnd, window_class, sizeof (window_class));
|
|
|
948 if (strcmp (window_class,
|
|
440
|
949 windows9x_p()
|
|
428
|
950 ? "tty"
|
|
|
951 : "ConsoleWindowClass") == 0)
|
|
|
952 {
|
|
|
953 cp->hwnd = hwnd;
|
|
|
954 return FALSE;
|
|
|
955 }
|
|
|
956 }
|
|
|
957 /* keep looking */
|
|
|
958 return TRUE;
|
|
|
959 }
|
|
|
960
|
|
|
961 int
|
|
|
962 sys_kill (int pid, int sig)
|
|
|
963 {
|
|
|
964 child_process *cp;
|
|
|
965 HANDLE proc_hand;
|
|
|
966 int need_to_free = 0;
|
|
|
967 int rc = 0;
|
|
|
968
|
|
|
969 /* Only handle signals that will result in the process dying */
|
|
|
970 if (sig != SIGINT && sig != SIGKILL && sig != SIGQUIT && sig != SIGHUP)
|
|
|
971 {
|
|
|
972 errno = EINVAL;
|
|
|
973 return -1;
|
|
|
974 }
|
|
|
975
|
|
|
976 cp = find_child_pid (pid);
|
|
|
977 if (cp == NULL)
|
|
|
978 {
|
|
|
979 proc_hand = OpenProcess (PROCESS_TERMINATE, 0, pid);
|
|
|
980 if (proc_hand == NULL)
|
|
|
981 {
|
|
|
982 errno = EPERM;
|
|
|
983 return -1;
|
|
|
984 }
|
|
|
985 need_to_free = 1;
|
|
|
986 }
|
|
|
987 else
|
|
|
988 {
|
|
|
989 proc_hand = cp->procinfo.hProcess;
|
|
|
990 pid = cp->procinfo.dwProcessId;
|
|
|
991
|
|
|
992 /* Try to locate console window for process. */
|
|
|
993 EnumWindows ((WNDENUMPROC)find_child_console, (LPARAM) cp);
|
|
|
994 }
|
|
|
995
|
|
|
996 if (sig == SIGINT)
|
|
|
997 {
|
|
|
998 if (NILP (Vwin32_start_process_share_console) && cp && cp->hwnd)
|
|
|
999 {
|
|
|
1000 BYTE control_scan_code = (BYTE) MapVirtualKey (VK_CONTROL, 0);
|
|
|
1001 BYTE vk_break_code = VK_CANCEL;
|
|
|
1002 BYTE break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0);
|
|
|
1003 HWND foreground_window;
|
|
|
1004
|
|
|
1005 if (break_scan_code == 0)
|
|
|
1006 {
|
|
|
1007 /* Fake Ctrl-C if we can't manage Ctrl-Break. */
|
|
|
1008 vk_break_code = 'C';
|
|
|
1009 break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0);
|
|
|
1010 }
|
|
|
1011
|
|
|
1012 foreground_window = GetForegroundWindow ();
|
|
|
1013 if (foreground_window && SetForegroundWindow (cp->hwnd))
|
|
|
1014 {
|
|
|
1015 /* Generate keystrokes as if user had typed Ctrl-Break or Ctrl-C. */
|
|
|
1016 keybd_event (VK_CONTROL, control_scan_code, 0, 0);
|
|
|
1017 keybd_event (vk_break_code, break_scan_code, 0, 0);
|
|
|
1018 keybd_event (vk_break_code, break_scan_code, KEYEVENTF_KEYUP, 0);
|
|
|
1019 keybd_event (VK_CONTROL, control_scan_code, KEYEVENTF_KEYUP, 0);
|
|
|
1020
|
|
|
1021 /* Sleep for a bit to give time for Emacs frame to respond
|
|
|
1022 to focus change events (if Emacs was active app). */
|
|
|
1023 Sleep (10);
|
|
|
1024
|
|
|
1025 SetForegroundWindow (foreground_window);
|
|
|
1026 }
|
|
|
1027 }
|
|
|
1028 /* Ctrl-Break is NT equivalent of SIGINT. */
|
|
|
1029 else if (!GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, pid))
|
|
|
1030 {
|
|
|
1031 DebPrint (("sys_kill.GenerateConsoleCtrlEvent return %d "
|
|
|
1032 "for pid %lu\n", GetLastError (), pid));
|
|
|
1033 errno = EINVAL;
|
|
|
1034 rc = -1;
|
|
|
1035 }
|
|
|
1036 }
|
|
|
1037 else
|
|
|
1038 {
|
|
|
1039 if (NILP (Vwin32_start_process_share_console) && cp && cp->hwnd)
|
|
|
1040 {
|
|
|
1041 #if 1
|
|
440
|
1042 if (windows9x_p())
|
|
428
|
1043 {
|
|
|
1044 /*
|
|
|
1045 Another possibility is to try terminating the VDM out-right by
|
|
|
1046 calling the Shell VxD (id 0x17) V86 interface, function #4
|
|
|
1047 "SHELL_Destroy_VM", ie.
|
|
|
1048
|
|
|
1049 mov edx,4
|
|
|
1050 mov ebx,vm_handle
|
|
|
1051 call shellapi
|
|
|
1052
|
|
|
1053 First need to determine the current VM handle, and then arrange for
|
|
|
1054 the shellapi call to be made from the system vm (by using
|
|
|
1055 Switch_VM_and_callback).
|
|
|
1056
|
|
|
1057 Could try to invoke DestroyVM through CallVxD.
|
|
|
1058
|
|
|
1059 */
|
|
|
1060 #if 0
|
|
|
1061 /* On Win95, posting WM_QUIT causes the 16-bit subsystem
|
|
|
1062 to hang when cmdproxy is used in conjunction with
|
|
|
1063 command.com for an interactive shell. Posting
|
|
|
1064 WM_CLOSE pops up a dialog that, when Yes is selected,
|
|
|
1065 does the same thing. TerminateProcess is also less
|
|
|
1066 than ideal in that subprocesses tend to stick around
|
|
|
1067 until the machine is shutdown, but at least it
|
|
|
1068 doesn't freeze the 16-bit subsystem. */
|
|
|
1069 PostMessage (cp->hwnd, WM_QUIT, 0xff, 0);
|
|
|
1070 #endif
|
|
|
1071 if (!TerminateProcess (proc_hand, 0xff))
|
|
|
1072 {
|
|
|
1073 DebPrint (("sys_kill.TerminateProcess returned %d "
|
|
|
1074 "for pid %lu\n", GetLastError (), pid));
|
|
|
1075 errno = EINVAL;
|
|
|
1076 rc = -1;
|
|
|
1077 }
|
|
|
1078 }
|
|
|
1079 else
|
|
|
1080 #endif
|
|
|
1081 PostMessage (cp->hwnd, WM_CLOSE, 0, 0);
|
|
|
1082 }
|
|
|
1083 /* Kill the process. On Win32 this doesn't kill child processes
|
|
|
1084 so it doesn't work very well for shells which is why it's not
|
|
|
1085 used in every case. */
|
|
|
1086 else if (!TerminateProcess (proc_hand, 0xff))
|
|
|
1087 {
|
|
|
1088 DebPrint (("sys_kill.TerminateProcess returned %d "
|
|
|
1089 "for pid %lu\n", GetLastError (), pid));
|
|
|
1090 errno = EINVAL;
|
|
|
1091 rc = -1;
|
|
|
1092 }
|
|
|
1093 }
|
|
|
1094
|
|
|
1095 if (need_to_free)
|
|
|
1096 CloseHandle (proc_hand);
|
|
|
1097
|
|
|
1098 return rc;
|
|
|
1099 }
|
|
|
1100
|
|
|
1101 #if 0
|
|
|
1102 /* Sync with FSF Emacs 19.34.6 note: ifdef'ed out in XEmacs */
|
|
|
1103 extern int report_file_error (CONST char *, Lisp_Object);
|
|
|
1104 #endif
|
|
|
1105 /* The following two routines are used to manipulate stdin, stdout, and
|
|
|
1106 stderr of our child processes.
|
|
|
1107
|
|
|
1108 Assuming that in, out, and err are *not* inheritable, we make them
|
|
|
1109 stdin, stdout, and stderr of the child as follows:
|
|
|
1110
|
|
|
1111 - Save the parent's current standard handles.
|
|
|
1112 - Set the std handles to inheritable duplicates of the ones being passed in.
|
|
|
1113 (Note that _get_osfhandle() is an io.h procedure that retrieves the
|
|
|
1114 NT file handle for a crt file descriptor.)
|
|
|
1115 - Spawn the child, which inherits in, out, and err as stdin,
|
|
|
1116 stdout, and stderr. (see Spawnve)
|
|
|
1117 - Close the std handles passed to the child.
|
|
|
1118 - Reset the parent's standard handles to the saved handles.
|
|
|
1119 (see reset_standard_handles)
|
|
|
1120 We assume that the caller closes in, out, and err after calling us. */
|
|
|
1121
|
|
|
1122 void
|
|
|
1123 prepare_standard_handles (int in, int out, int err, HANDLE handles[3])
|
|
|
1124 {
|
|
|
1125 HANDLE parent;
|
|
|
1126 HANDLE newstdin, newstdout, newstderr;
|
|
|
1127
|
|
|
1128 parent = GetCurrentProcess ();
|
|
|
1129
|
|
|
1130 handles[0] = GetStdHandle (STD_INPUT_HANDLE);
|
|
|
1131 handles[1] = GetStdHandle (STD_OUTPUT_HANDLE);
|
|
|
1132 handles[2] = GetStdHandle (STD_ERROR_HANDLE);
|
|
|
1133
|
|
|
1134 /* make inheritable copies of the new handles */
|
|
|
1135 if (!DuplicateHandle (parent,
|
|
|
1136 (HANDLE) _get_osfhandle (in),
|
|
|
1137 parent,
|
|
|
1138 &newstdin,
|
|
|
1139 0,
|
|
|
1140 TRUE,
|
|
|
1141 DUPLICATE_SAME_ACCESS))
|
|
|
1142 report_file_error ("Duplicating input handle for child", Qnil);
|
|
|
1143
|
|
|
1144 if (!DuplicateHandle (parent,
|
|
|
1145 (HANDLE) _get_osfhandle (out),
|
|
|
1146 parent,
|
|
|
1147 &newstdout,
|
|
|
1148 0,
|
|
|
1149 TRUE,
|
|
|
1150 DUPLICATE_SAME_ACCESS))
|
|
|
1151 report_file_error ("Duplicating output handle for child", Qnil);
|
|
|
1152
|
|
|
1153 if (!DuplicateHandle (parent,
|
|
|
1154 (HANDLE) _get_osfhandle (err),
|
|
|
1155 parent,
|
|
|
1156 &newstderr,
|
|
|
1157 0,
|
|
|
1158 TRUE,
|
|
|
1159 DUPLICATE_SAME_ACCESS))
|
|
|
1160 report_file_error ("Duplicating error handle for child", Qnil);
|
|
|
1161
|
|
|
1162 /* and store them as our std handles */
|
|
|
1163 if (!SetStdHandle (STD_INPUT_HANDLE, newstdin))
|
|
|
1164 report_file_error ("Changing stdin handle", Qnil);
|
|
|
1165
|
|
|
1166 if (!SetStdHandle (STD_OUTPUT_HANDLE, newstdout))
|
|
|
1167 report_file_error ("Changing stdout handle", Qnil);
|
|
|
1168
|
|
|
1169 if (!SetStdHandle (STD_ERROR_HANDLE, newstderr))
|
|
|
1170 report_file_error ("Changing stderr handle", Qnil);
|
|
|
1171 }
|
|
|
1172
|
|
|
1173 void
|
|
|
1174 reset_standard_handles (int in, int out, int err, HANDLE handles[3])
|
|
|
1175 {
|
|
|
1176 /* close the duplicated handles passed to the child */
|
|
|
1177 CloseHandle (GetStdHandle (STD_INPUT_HANDLE));
|
|
|
1178 CloseHandle (GetStdHandle (STD_OUTPUT_HANDLE));
|
|
|
1179 CloseHandle (GetStdHandle (STD_ERROR_HANDLE));
|
|
|
1180
|
|
|
1181 /* now restore parent's saved std handles */
|
|
|
1182 SetStdHandle (STD_INPUT_HANDLE, handles[0]);
|
|
|
1183 SetStdHandle (STD_OUTPUT_HANDLE, handles[1]);
|
|
|
1184 SetStdHandle (STD_ERROR_HANDLE, handles[2]);
|
|
|
1185 }
|
|
|
1186
|
|
|
1187 void
|
|
|
1188 set_process_dir (const char * dir)
|
|
|
1189 {
|
|
|
1190 process_dir = dir;
|
|
|
1191 }
|
|
|
1192
|
|
|
1193 /* Some miscellaneous functions that are Windows specific, but not GUI
|
|
|
1194 specific (ie. are applicable in terminal or batch mode as well). */
|
|
|
1195
|
|
|
1196 /* lifted from fileio.c */
|
|
|
1197 #define CORRECT_DIR_SEPS(s) \
|
|
|
1198 do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \
|
|
|
1199 else unixtodos_filename (s); \
|
|
|
1200 } while (0)
|
|
|
1201
|
|
|
1202 DEFUN ("win32-short-file-name", Fwin32_short_file_name, 1, 1, "", /*
|
|
|
1203 Return the short file name version (8.3) of the full path of FILENAME.
|
|
|
1204 If FILENAME does not exist, return nil.
|
|
|
1205 All path elements in FILENAME are converted to their short names.
|
|
|
1206 */
|
|
|
1207 (filename))
|
|
|
1208 {
|
|
|
1209 char shortname[MAX_PATH];
|
|
|
1210
|
|
|
1211 CHECK_STRING (filename);
|
|
|
1212
|
|
|
1213 /* first expand it. */
|
|
|
1214 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1215
|
|
|
1216 /* luckily, this returns the short version of each element in the path. */
|
|
|
1217 if (GetShortPathName (XSTRING_DATA (filename), shortname, MAX_PATH) == 0)
|
|
|
1218 return Qnil;
|
|
|
1219
|
|
|
1220 CORRECT_DIR_SEPS (shortname);
|
|
|
1221
|
|
|
1222 return build_string (shortname);
|
|
|
1223 }
|
|
|
1224
|
|
|
1225
|
|
|
1226 DEFUN ("win32-long-file-name", Fwin32_long_file_name, 1, 1, "", /*
|
|
|
1227 Return the long file name version of the full path of FILENAME.
|
|
|
1228 If FILENAME does not exist, return nil.
|
|
|
1229 All path elements in FILENAME are converted to their long names.
|
|
|
1230 */
|
|
|
1231 (filename))
|
|
|
1232 {
|
|
|
1233 char longname[ MAX_PATH ];
|
|
|
1234
|
|
|
1235 CHECK_STRING (filename);
|
|
|
1236
|
|
|
1237 /* first expand it. */
|
|
|
1238 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1239
|
|
|
1240 if (!win32_get_long_filename (XSTRING_DATA (filename), longname, MAX_PATH))
|
|
|
1241 return Qnil;
|
|
|
1242
|
|
|
1243 CORRECT_DIR_SEPS (longname);
|
|
|
1244
|
|
|
1245 return build_string (longname);
|
|
|
1246 }
|
|
|
1247
|
|
|
1248 DEFUN ("win32-set-process-priority", Fwin32_set_process_priority, 2, 2, "", /*
|
|
|
1249 Set the priority of PROCESS to PRIORITY.
|
|
|
1250 If PROCESS is nil, the priority of Emacs is changed, otherwise the
|
|
|
1251 priority of the process whose pid is PROCESS is changed.
|
|
|
1252 PRIORITY should be one of the symbols high, normal, or low;
|
|
|
1253 any other symbol will be interpreted as normal.
|
|
|
1254
|
|
|
1255 If successful, the return value is t, otherwise nil.
|
|
|
1256 */
|
|
|
1257 (process, priority))
|
|
|
1258 {
|
|
|
1259 HANDLE proc_handle = GetCurrentProcess ();
|
|
|
1260 DWORD priority_class = NORMAL_PRIORITY_CLASS;
|
|
|
1261 Lisp_Object result = Qnil;
|
|
|
1262
|
|
|
1263 CHECK_SYMBOL (priority);
|
|
|
1264
|
|
|
1265 if (!NILP (process))
|
|
|
1266 {
|
|
|
1267 DWORD pid;
|
|
|
1268 child_process *cp;
|
|
|
1269
|
|
|
1270 CHECK_INT (process);
|
|
|
1271
|
|
|
1272 /* Allow pid to be an internally generated one, or one obtained
|
|
|
1273 externally. This is necessary because real pids on Win95 are
|
|
|
1274 negative. */
|
|
|
1275
|
|
|
1276 pid = XINT (process);
|
|
|
1277 cp = find_child_pid (pid);
|
|
|
1278 if (cp != NULL)
|
|
|
1279 pid = cp->procinfo.dwProcessId;
|
|
|
1280
|
|
|
1281 proc_handle = OpenProcess (PROCESS_SET_INFORMATION, FALSE, pid);
|
|
|
1282 }
|
|
|
1283
|
|
|
1284 if (EQ (priority, Qhigh))
|
|
|
1285 priority_class = HIGH_PRIORITY_CLASS;
|
|
|
1286 else if (EQ (priority, Qlow))
|
|
|
1287 priority_class = IDLE_PRIORITY_CLASS;
|
|
|
1288
|
|
|
1289 if (proc_handle != NULL)
|
|
|
1290 {
|
|
|
1291 if (SetPriorityClass (proc_handle, priority_class))
|
|
|
1292 result = Qt;
|
|
|
1293 if (!NILP (process))
|
|
|
1294 CloseHandle (proc_handle);
|
|
|
1295 }
|
|
|
1296
|
|
|
1297 return result;
|
|
|
1298 }
|
|
|
1299
|
|
|
1300
|
|
|
1301 DEFUN ("win32-get-locale-info", Fwin32_get_locale_info, 1, 2, "", /*
|
|
|
1302 "Return information about the Windows locale LCID.
|
|
|
1303 By default, return a three letter locale code which encodes the default
|
|
|
1304 language as the first two characters, and the country or regional variant
|
|
|
1305 as the third letter. For example, ENU refers to `English (United States)',
|
|
|
1306 while ENC means `English (Canadian)'.
|
|
|
1307
|
|
|
1308 If the optional argument LONGFORM is non-nil, the long form of the locale
|
|
|
1309 name is returned, e.g. `English (United States)' instead.
|
|
|
1310
|
|
|
1311 If LCID (a 16-bit number) is not a valid locale, the result is nil.
|
|
|
1312 */
|
|
|
1313 (lcid, longform))
|
|
|
1314 {
|
|
|
1315 int got_abbrev;
|
|
|
1316 int got_full;
|
|
|
1317 char abbrev_name[32] = { 0 };
|
|
|
1318 char full_name[256] = { 0 };
|
|
|
1319
|
|
|
1320 CHECK_INT (lcid);
|
|
|
1321
|
|
|
1322 if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED))
|
|
|
1323 return Qnil;
|
|
|
1324
|
|
|
1325 if (NILP (longform))
|
|
|
1326 {
|
|
|
1327 got_abbrev = GetLocaleInfo (XINT (lcid),
|
|
|
1328 LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP,
|
|
|
1329 abbrev_name, sizeof (abbrev_name));
|
|
|
1330 if (got_abbrev)
|
|
|
1331 return build_string (abbrev_name);
|
|
|
1332 }
|
|
|
1333 else
|
|
|
1334 {
|
|
|
1335 got_full = GetLocaleInfo (XINT (lcid),
|
|
|
1336 LOCALE_SLANGUAGE | LOCALE_USE_CP_ACP,
|
|
|
1337 full_name, sizeof (full_name));
|
|
|
1338 if (got_full)
|
|
|
1339 return build_string (full_name);
|
|
|
1340 }
|
|
|
1341
|
|
|
1342 return Qnil;
|
|
|
1343 }
|
|
|
1344
|
|
|
1345
|
|
|
1346 DEFUN ("win32-get-current-locale-id", Fwin32_get_current_locale_id, 0, 0, "", /*
|
|
|
1347 "Return Windows locale id for current locale setting.
|
|
|
1348 This is a numerical value; use `win32-get-locale-info' to convert to a
|
|
|
1349 human-readable form.
|
|
|
1350 */
|
|
|
1351 ())
|
|
|
1352 {
|
|
|
1353 return make_int (GetThreadLocale ());
|
|
|
1354 }
|
|
|
1355
|
|
|
1356
|
|
|
1357 DEFUN ("win32-get-default-locale-id", Fwin32_get_default_locale_id, 0, 1, "", /*
|
|
|
1358 "Return Windows locale id for default locale setting.
|
|
|
1359 By default, the system default locale setting is returned; if the optional
|
|
|
1360 parameter USERP is non-nil, the user default locale setting is returned.
|
|
|
1361 This is a numerical value; use `win32-get-locale-info' to convert to a
|
|
|
1362 human-readable form.
|
|
|
1363 */
|
|
|
1364 (userp))
|
|
|
1365 {
|
|
|
1366 if (NILP (userp))
|
|
|
1367 return make_int (GetSystemDefaultLCID ());
|
|
|
1368 return make_int (GetUserDefaultLCID ());
|
|
|
1369 }
|
|
|
1370
|
|
|
1371 DWORD int_from_hex (char * s)
|
|
|
1372 {
|
|
|
1373 DWORD val = 0;
|
|
|
1374 static char hex[] = "0123456789abcdefABCDEF";
|
|
|
1375 char * p;
|
|
|
1376
|
|
|
1377 while (*s && (p = strchr(hex, *s)) != NULL)
|
|
|
1378 {
|
|
|
1379 unsigned digit = p - hex;
|
|
|
1380 if (digit > 15)
|
|
|
1381 digit -= 6;
|
|
|
1382 val = val * 16 + digit;
|
|
|
1383 s++;
|
|
|
1384 }
|
|
|
1385 return val;
|
|
|
1386 }
|
|
|
1387
|
|
|
1388 /* We need to build a global list, since the EnumSystemLocale callback
|
|
|
1389 function isn't given a context pointer. */
|
|
|
1390 Lisp_Object Vwin32_valid_locale_ids;
|
|
|
1391
|
|
|
1392 BOOL CALLBACK enum_locale_fn (LPTSTR localeNum)
|
|
|
1393 {
|
|
|
1394 DWORD id = int_from_hex (localeNum);
|
|
|
1395 Vwin32_valid_locale_ids = Fcons (make_int (id), Vwin32_valid_locale_ids);
|
|
|
1396 return TRUE;
|
|
|
1397 }
|
|
|
1398
|
|
|
1399 DEFUN ("win32-get-valid-locale-ids", Fwin32_get_valid_locale_ids, 0, 0, "", /*
|
|
|
1400 Return list of all valid Windows locale ids.
|
|
|
1401 Each id is a numerical value; use `win32-get-locale-info' to convert to a
|
|
|
1402 human-readable form.
|
|
|
1403 */
|
|
|
1404 ())
|
|
|
1405 {
|
|
|
1406 Vwin32_valid_locale_ids = Qnil;
|
|
|
1407
|
|
|
1408 EnumSystemLocales (enum_locale_fn, LCID_SUPPORTED);
|
|
|
1409
|
|
|
1410 Vwin32_valid_locale_ids = Fnreverse (Vwin32_valid_locale_ids);
|
|
|
1411 return Vwin32_valid_locale_ids;
|
|
|
1412 }
|
|
|
1413
|
|
|
1414
|
|
|
1415 DEFUN ("win32-set-current-locale", Fwin32_set_current_locale, 1, 1, "", /*
|
|
|
1416 Make Windows locale LCID be the current locale setting for Emacs.
|
|
|
1417 If successful, the new locale id is returned, otherwise nil.
|
|
|
1418 */
|
|
|
1419 (lcid))
|
|
|
1420 {
|
|
|
1421 CHECK_INT (lcid);
|
|
|
1422
|
|
|
1423 if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED))
|
|
|
1424 return Qnil;
|
|
|
1425
|
|
|
1426 if (!SetThreadLocale (XINT (lcid)))
|
|
|
1427 return Qnil;
|
|
|
1428
|
|
|
1429 /* Sync with FSF Emacs 19.34.6 note: dwWinThreadId declared in
|
|
|
1430 w32term.h and defined in w32fns.c, both of which are not in current
|
|
440
|
1431 XEmacs. #### Check what we lose by ifdef'ing out these. --marcpa */
|
|
428
|
1432 #if 0
|
|
|
1433 /* Need to set input thread locale if present. */
|
|
|
1434 if (dwWinThreadId)
|
|
|
1435 /* Reply is not needed. */
|
|
|
1436 PostThreadMessage (dwWinThreadId, WM_EMACS_SETLOCALE, XINT (lcid), 0);
|
|
|
1437 #endif
|
|
|
1438
|
|
|
1439 return make_int (GetThreadLocale ());
|
|
|
1440 }
|
|
|
1441
|
|
|
1442
|
|
|
1443 void
|
|
|
1444 syms_of_ntproc ()
|
|
|
1445 {
|
|
|
1446 DEFSUBR (Fwin32_short_file_name);
|
|
|
1447 DEFSUBR (Fwin32_long_file_name);
|
|
|
1448 DEFSUBR (Fwin32_set_process_priority);
|
|
|
1449 DEFSUBR (Fwin32_get_locale_info);
|
|
|
1450 DEFSUBR (Fwin32_get_current_locale_id);
|
|
|
1451 DEFSUBR (Fwin32_get_default_locale_id);
|
|
|
1452 DEFSUBR (Fwin32_get_valid_locale_ids);
|
|
|
1453 DEFSUBR (Fwin32_set_current_locale);
|
|
|
1454 }
|
|
|
1455
|
|
|
1456
|
|
|
1457 void
|
|
|
1458 vars_of_ntproc (void)
|
|
|
1459 {
|
|
|
1460 defsymbol (&Qhigh, "high");
|
|
|
1461 defsymbol (&Qlow, "low");
|
|
|
1462
|
|
|
1463 DEFVAR_LISP ("win32-quote-process-args", &Vwin32_quote_process_args /*
|
|
|
1464 Non-nil enables quoting of process arguments to ensure correct parsing.
|
|
|
1465 Because Windows does not directly pass argv arrays to child processes,
|
|
|
1466 programs have to reconstruct the argv array by parsing the command
|
|
|
1467 line string. For an argument to contain a space, it must be enclosed
|
|
|
1468 in double quotes or it will be parsed as multiple arguments.
|
|
|
1469
|
|
|
1470 If the value is a character, that character will be used to escape any
|
|
|
1471 quote characters that appear, otherwise a suitable escape character
|
|
|
1472 will be chosen based on the type of the program.
|
|
|
1473 */ );
|
|
|
1474 Vwin32_quote_process_args = Qt;
|
|
|
1475
|
|
|
1476 DEFVAR_LISP ("win32-start-process-show-window",
|
|
|
1477 &Vwin32_start_process_show_window /*
|
|
|
1478 When nil, processes started via start-process hide their windows.
|
|
|
1479 When non-nil, they show their window in the method of their choice.
|
|
|
1480 */ );
|
|
|
1481 Vwin32_start_process_show_window = Qnil;
|
|
|
1482
|
|
|
1483 DEFVAR_LISP ("win32-start-process-share-console",
|
|
|
1484 &Vwin32_start_process_share_console /*
|
|
|
1485 When nil, processes started via start-process are given a new console.
|
|
|
1486 When non-nil, they share the Emacs console; this has the limitation of
|
|
|
1487 allowing only only DOS subprocess to run at a time (whether started directly
|
|
|
1488 or indirectly by Emacs), and preventing Emacs from cleanly terminating the
|
|
|
1489 subprocess group, but may allow Emacs to interrupt a subprocess that doesn't
|
|
|
1490 otherwise respond to interrupts from Emacs.
|
|
|
1491 */ );
|
|
|
1492 Vwin32_start_process_share_console = Qt;
|
|
|
1493
|
|
|
1494 DEFVAR_LISP ("win32-pipe-read-delay", &Vwin32_pipe_read_delay /*
|
|
|
1495 Forced delay before reading subprocess output.
|
|
|
1496 This is done to improve the buffering of subprocess output, by
|
|
|
1497 avoiding the inefficiency of frequently reading small amounts of data.
|
|
|
1498
|
|
|
1499 If positive, the value is the number of milliseconds to sleep before
|
|
|
1500 reading the subprocess output. If negative, the magnitude is the number
|
|
|
1501 of time slices to wait (effectively boosting the priority of the child
|
|
|
1502 process temporarily). A value of zero disables waiting entirely.
|
|
|
1503 */ );
|
|
|
1504 Vwin32_pipe_read_delay = make_int (50);
|
|
|
1505
|
|
|
1506 #if 0
|
|
|
1507 DEFVAR_LISP ("win32-generate-fake-inodes", &Vwin32_generate_fake_inodes /*
|
|
|
1508 "Non-nil means attempt to fake realistic inode values.
|
|
|
1509 This works by hashing the truename of files, and should detect
|
|
|
1510 aliasing between long and short (8.3 DOS) names, but can have
|
|
|
1511 false positives because of hash collisions. Note that determining
|
|
|
1512 the truename of a file can be slow.
|
|
|
1513 */ );
|
|
|
1514 Vwin32_generate_fake_inodes = Qnil;
|
|
|
1515 #endif
|
|
|
1516 }
|
|
|
1517
|
|
|
1518 /* end of ntproc.c */
|
