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100
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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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209
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25 /* Synced with FSF Emacs 19.34.6 by Marc Paquette <marcpa@cam.org> */
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100
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26
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412
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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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35 /* ### I don't believe it - martin */
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274
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36 #include <config.h>
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100
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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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412
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44 #include <sys/socket.h>
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398
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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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100
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48 #include "lisp.h"
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239
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49 #include "sysproc.h"
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100
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50 #include "nt.h"
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209
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51 #include "ntheap.h" /* From 19.34.6 */
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100
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52 #include "systime.h"
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223
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53 #include "syssignal.h"
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398
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54 #include "sysfile.h"
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100
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55 #include "syswait.h"
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398
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56 #include "buffer.h"
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100
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57 #include "process.h"
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209
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58 /*#include "w32term.h"*/ /* From 19.34.6: sync in ? --marcpa */
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100
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59
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288
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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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100
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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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380
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65 are careful about constructing argv arrays, we make this behavior
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100
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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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209
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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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100
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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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209
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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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100
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92
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398
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93 extern Lisp_Object Vlisp_EXEC_SUFFIXES;
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94
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239
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95 #ifndef DEBUG_XEMACS
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96 __inline
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100
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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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239
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100 #ifdef DEBUG_XEMACS
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100
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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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239
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108 #endif
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100
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109 }
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110
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412
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111 /* sys_signal moved to nt.c. It's now called msw_signal... */
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100
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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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123 /* Find an unused process slot. */
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124 child_process *
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125 new_child (void)
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126 {
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127 child_process *cp;
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128 DWORD id;
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129
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130 for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--)
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131 if (!CHILD_ACTIVE (cp))
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272
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132 goto Initialize;
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100
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133 if (child_proc_count == MAX_CHILDREN)
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134 return NULL;
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135 cp = &child_procs[child_proc_count++];
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136
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272
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137 Initialize:
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138 xzero (*cp);
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100
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139 cp->fd = -1;
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140 cp->pid = -1;
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373
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141 if (cp->procinfo.hProcess)
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142 CloseHandle(cp->procinfo.hProcess);
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100
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143 cp->procinfo.hProcess = NULL;
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144 cp->status = STATUS_READ_ERROR;
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145
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146 /* use manual reset event so that select() will function properly */
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147 cp->char_avail = CreateEvent (NULL, TRUE, FALSE, NULL);
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148 if (cp->char_avail)
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149 {
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150 cp->char_consumed = CreateEvent (NULL, FALSE, FALSE, NULL);
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151 if (cp->char_consumed)
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152 {
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153 cp->thrd = CreateThread (NULL, 1024, reader_thread, cp, 0, &id);
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154 if (cp->thrd)
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155 return cp;
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156 }
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157 }
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158 delete_child (cp);
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159 return NULL;
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160 }
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161
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162 void
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163 delete_child (child_process *cp)
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164 {
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165 int i;
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166
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167 /* Should not be deleting a child that is still needed. */
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168 for (i = 0; i < MAXDESC; i++)
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169 if (fd_info[i].cp == cp)
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170 abort ();
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171
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172 if (!CHILD_ACTIVE (cp))
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173 return;
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174
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175 /* reap thread if necessary */
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176 if (cp->thrd)
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177 {
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178 DWORD rc;
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179
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180 if (GetExitCodeThread (cp->thrd, &rc) && rc == STILL_ACTIVE)
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181 {
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182 /* let the thread exit cleanly if possible */
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183 cp->status = STATUS_READ_ERROR;
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184 SetEvent (cp->char_consumed);
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185 if (WaitForSingleObject (cp->thrd, 1000) != WAIT_OBJECT_0)
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186 {
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187 DebPrint (("delete_child.WaitForSingleObject (thread) failed "
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188 "with %lu for fd %ld\n", GetLastError (), cp->fd));
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189 TerminateThread (cp->thrd, 0);
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190 }
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191 }
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192 CloseHandle (cp->thrd);
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193 cp->thrd = NULL;
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194 }
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195 if (cp->char_avail)
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196 {
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197 CloseHandle (cp->char_avail);
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198 cp->char_avail = NULL;
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199 }
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200 if (cp->char_consumed)
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201 {
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202 CloseHandle (cp->char_consumed);
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203 cp->char_consumed = NULL;
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204 }
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205
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206 /* update child_proc_count (highest numbered slot in use plus one) */
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207 if (cp == child_procs + child_proc_count - 1)
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208 {
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209 for (i = child_proc_count-1; i >= 0; i--)
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210 if (CHILD_ACTIVE (&child_procs[i]))
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211 {
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212 child_proc_count = i + 1;
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213 break;
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214 }
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215 }
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216 if (i < 0)
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217 child_proc_count = 0;
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218 }
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219
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220 /* Find a child by pid. */
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221 static child_process *
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222 find_child_pid (DWORD pid)
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223 {
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224 child_process *cp;
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225
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226 for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--)
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227 if (CHILD_ACTIVE (cp) && pid == cp->pid)
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228 return cp;
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229 return NULL;
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230 }
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231
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398
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232 /* Function to do blocking read of one byte, needed to implement
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233 select. It is only allowed on sockets and pipes. */
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234 static int
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235 _sys_read_ahead (int fd)
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236 {
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237 child_process * cp;
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238 int rc = 0;
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239
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240 if (fd < 0 || fd >= MAXDESC)
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241 return STATUS_READ_ERROR;
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242
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243 cp = fd_info[fd].cp;
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244
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245 if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY)
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246 return STATUS_READ_ERROR;
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247
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248 if ((fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) == 0
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249 || (fd_info[fd].flags & FILE_READ) == 0)
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250 {
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251 /* fd is not a pipe or socket */
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252 abort ();
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253 }
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254
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255 cp->status = STATUS_READ_IN_PROGRESS;
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256
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257 if (fd_info[fd].flags & FILE_PIPE)
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258 {
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259 rc = _read (fd, &cp->chr, sizeof (char));
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260
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261 /* Give subprocess time to buffer some more output for us before
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262 reporting that input is available; we need this because Win95
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263 connects DOS programs to pipes by making the pipe appear to be
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264 the normal console stdout - as a result most DOS programs will
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265 write to stdout without buffering, ie. one character at a
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266 time. Even some Win32 programs do this - "dir" in a command
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267 shell on NT is very slow if we don't do this. */
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268 if (rc > 0)
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269 {
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270 int wait = XINT (Vwin32_pipe_read_delay);
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271
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272 if (wait > 0)
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273 Sleep (wait);
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274 else if (wait < 0)
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275 while (++wait <= 0)
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276 /* Yield remainder of our time slice, effectively giving a
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277 temporary priority boost to the child process. */
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278 Sleep (0);
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279 }
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280 }
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281
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282 if (rc == sizeof (char))
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283 cp->status = STATUS_READ_SUCCEEDED;
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284 else
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285 cp->status = STATUS_READ_FAILED;
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286
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287 return cp->status;
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288 }
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100
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289
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290 /* Thread proc for child process and socket reader threads. Each thread
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291 is normally blocked until woken by select() to check for input by
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292 reading one char. When the read completes, char_avail is signalled
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293 to wake up the select emulator and the thread blocks itself again. */
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294 DWORD WINAPI
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295 reader_thread (void *arg)
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296 {
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297 child_process *cp;
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298
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299 /* Our identity */
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300 cp = (child_process *)arg;
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301
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373
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302 /* <matts@tibco.com> - I think the test below is wrong - we don't
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303 want to wait for someone to signal char_consumed, as we haven't
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304 read anything for them to consume yet! */
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305
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306 /*
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100
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307 if (cp == NULL ||
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308 WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0)
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373
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309 */
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310
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311 if (cp == NULL)
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312 {
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313 return 1;
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314 }
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100
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315
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316 for (;;)
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317 {
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318 int rc;
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319
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320 rc = _sys_read_ahead (cp->fd);
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321
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322 /* The name char_avail is a misnomer - it really just means the
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323 read-ahead has completed, whether successfully or not. */
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324 if (!SetEvent (cp->char_avail))
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325 {
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326 DebPrint (("reader_thread.SetEvent failed with %lu for fd %ld\n",
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327 GetLastError (), cp->fd));
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328 return 1;
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329 }
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330
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331 if (rc == STATUS_READ_ERROR)
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373
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332 {
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333 /* We are finished, so clean up handles and set to NULL so
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334 that CHILD_ACTIVE will see what is going on */
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335 if (cp->char_avail) {
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336 CloseHandle (cp->char_avail);
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337 cp->char_avail = NULL;
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338 }
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339 if (cp->thrd) {
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340 CloseHandle (cp->thrd);
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341 cp->thrd = NULL;
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342 }
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343 if (cp->char_consumed) {
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344 CloseHandle(cp->char_consumed);
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345 cp->char_consumed = NULL;
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346 }
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347 if (cp->procinfo.hProcess)
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348 {
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349 CloseHandle (cp->procinfo.hProcess);
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350 cp->procinfo.hProcess=NULL;
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351 }
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352 return 1;
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353 }
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100
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354
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355 /* If the read died, the child has died so let the thread die */
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356 if (rc == STATUS_READ_FAILED)
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357 break;
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358
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359 /* Wait until our input is acknowledged before reading again */
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360 if (WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0)
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361 {
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362 DebPrint (("reader_thread.WaitForSingleObject failed with "
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363 "%lu for fd %ld\n", GetLastError (), cp->fd));
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364 break;
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365 }
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366 }
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373
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367 /* We are finished, so clean up handles and set to NULL so that
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368 CHILD_ACTIVE will see what is going on */
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369 if (cp->char_avail) {
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370 CloseHandle (cp->char_avail);
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371 cp->char_avail = NULL;
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372 }
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373 if (cp->thrd) {
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374 CloseHandle (cp->thrd);
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375 cp->thrd = NULL;
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376 }
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377 if (cp->char_consumed) {
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378 CloseHandle(cp->char_consumed);
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379 cp->char_consumed = NULL;
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380 }
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381 if (cp->procinfo.hProcess)
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382 {
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383 CloseHandle (cp->procinfo.hProcess);
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384 cp->procinfo.hProcess=NULL;
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385 }
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386
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100
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387 return 0;
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388 }
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389
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209
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390 /* To avoid Emacs changing directory, we just record here the directory
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391 the new process should start in. This is set just before calling
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392 sys_spawnve, and is not generally valid at any other time. */
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288
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393 static const char * process_dir;
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209
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394
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|
100
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395 static BOOL
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|
412
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396 create_child (CONST char *exe, char *cmdline, char *env,
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100
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397 int * pPid, child_process *cp)
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|
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398 {
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399 STARTUPINFO start;
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400 SECURITY_ATTRIBUTES sec_attrs;
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401 SECURITY_DESCRIPTOR sec_desc;
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209
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402 char dir[ MAXPATHLEN ];
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100
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403
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404 if (cp == NULL) abort ();
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405
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272
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406 xzero (start);
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|
100
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407 start.cb = sizeof (start);
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408
|
|
412
|
409 #ifdef HAVE_NTGUI
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|
209
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410 if (NILP (Vwin32_start_process_show_window))
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|
100
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411 start.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
|
|
209
|
412 else
|
|
|
413 start.dwFlags = STARTF_USESTDHANDLES;
|
|
100
|
414 start.wShowWindow = SW_HIDE;
|
|
|
415
|
|
|
416 start.hStdInput = GetStdHandle (STD_INPUT_HANDLE);
|
|
|
417 start.hStdOutput = GetStdHandle (STD_OUTPUT_HANDLE);
|
|
|
418 start.hStdError = GetStdHandle (STD_ERROR_HANDLE);
|
|
412
|
419 #endif /* HAVE_NTGUI */
|
|
100
|
420
|
|
|
421 /* Explicitly specify no security */
|
|
|
422 if (!InitializeSecurityDescriptor (&sec_desc, SECURITY_DESCRIPTOR_REVISION))
|
|
|
423 goto EH_Fail;
|
|
|
424 if (!SetSecurityDescriptorDacl (&sec_desc, TRUE, NULL, FALSE))
|
|
|
425 goto EH_Fail;
|
|
|
426 sec_attrs.nLength = sizeof (sec_attrs);
|
|
|
427 sec_attrs.lpSecurityDescriptor = &sec_desc;
|
|
|
428 sec_attrs.bInheritHandle = FALSE;
|
|
|
429
|
|
209
|
430 strcpy (dir, process_dir);
|
|
|
431 unixtodos_filename (dir);
|
|
|
432
|
|
100
|
433 if (!CreateProcess (exe, cmdline, &sec_attrs, NULL, TRUE,
|
|
209
|
434 (!NILP (Vwin32_start_process_share_console)
|
|
|
435 ? CREATE_NEW_PROCESS_GROUP
|
|
|
436 : CREATE_NEW_CONSOLE),
|
|
|
437 env, dir,
|
|
100
|
438 &start, &cp->procinfo))
|
|
|
439 goto EH_Fail;
|
|
|
440
|
|
|
441 cp->pid = (int) cp->procinfo.dwProcessId;
|
|
|
442
|
|
373
|
443 CloseHandle (cp->procinfo.hThread);
|
|
|
444 CloseHandle (cp->procinfo.hProcess);
|
|
|
445 cp->procinfo.hThread=NULL;
|
|
|
446 cp->procinfo.hProcess=NULL;
|
|
|
447
|
|
412
|
448 /* Hack for Windows 95, which assigns large (ie negative) pids */
|
|
|
449 if (cp->pid < 0)
|
|
|
450 cp->pid = -cp->pid;
|
|
|
451
|
|
398
|
452 /* pid must fit in a Lisp_Int */
|
|
412
|
453 #ifdef USE_UNION_TYPE
|
|
|
454 cp->pid = (cp->pid & ((1U << VALBITS) - 1));
|
|
|
455 #else
|
|
|
456 cp->pid = (cp->pid & VALMASK);
|
|
|
457 #endif
|
|
100
|
458
|
|
|
459 *pPid = cp->pid;
|
|
|
460
|
|
|
461 return TRUE;
|
|
|
462
|
|
|
463 EH_Fail:
|
|
|
464 DebPrint (("create_child.CreateProcess failed: %ld\n", GetLastError()););
|
|
|
465 return FALSE;
|
|
|
466 }
|
|
|
467
|
|
412
|
468 #ifndef __MINGW32__
|
|
|
469 /* Return pointer to section header for section containing the given
|
|
|
470 relative virtual address. */
|
|
|
471 static IMAGE_SECTION_HEADER *
|
|
|
472 rva_to_section (DWORD rva, IMAGE_NT_HEADERS * nt_header)
|
|
|
473 {
|
|
|
474 PIMAGE_SECTION_HEADER section;
|
|
|
475 int i;
|
|
|
476
|
|
|
477 section = IMAGE_FIRST_SECTION (nt_header);
|
|
|
478
|
|
|
479 for (i = 0; i < nt_header->FileHeader.NumberOfSections; i++)
|
|
|
480 {
|
|
|
481 if (rva >= section->VirtualAddress
|
|
|
482 && rva < section->VirtualAddress + section->SizeOfRawData)
|
|
|
483 return section;
|
|
|
484 section++;
|
|
|
485 }
|
|
|
486 return NULL;
|
|
|
487 }
|
|
|
488 #endif
|
|
|
489
|
|
|
490 void
|
|
|
491 win32_executable_type (CONST char * filename, int * is_dos_app, int * is_cygnus_app)
|
|
|
492 {
|
|
|
493 file_data executable;
|
|
|
494 char * p;
|
|
|
495
|
|
|
496 /* Default values in case we can't tell for sure. */
|
|
|
497 *is_dos_app = FALSE;
|
|
|
498 *is_cygnus_app = FALSE;
|
|
|
499
|
|
|
500 if (!open_input_file (&executable, filename))
|
|
|
501 return;
|
|
|
502
|
|
|
503 p = strrchr (filename, '.');
|
|
|
504
|
|
|
505 /* We can only identify DOS .com programs from the extension. */
|
|
|
506 if (p && stricmp (p, ".com") == 0)
|
|
|
507 *is_dos_app = TRUE;
|
|
|
508 else if (p && (stricmp (p, ".bat") == 0 ||
|
|
|
509 stricmp (p, ".cmd") == 0))
|
|
|
510 {
|
|
|
511 /* A DOS shell script - it appears that CreateProcess is happy to
|
|
|
512 accept this (somewhat surprisingly); presumably it looks at
|
|
|
513 COMSPEC to determine what executable to actually invoke.
|
|
|
514 Therefore, we have to do the same here as well. */
|
|
|
515 /* Actually, I think it uses the program association for that
|
|
|
516 extension, which is defined in the registry. */
|
|
|
517 p = egetenv ("COMSPEC");
|
|
|
518 if (p)
|
|
|
519 win32_executable_type (p, is_dos_app, is_cygnus_app);
|
|
|
520 }
|
|
|
521 else
|
|
|
522 {
|
|
|
523 /* Look for DOS .exe signature - if found, we must also check that
|
|
|
524 it isn't really a 16- or 32-bit Windows exe, since both formats
|
|
|
525 start with a DOS program stub. Note that 16-bit Windows
|
|
|
526 executables use the OS/2 1.x format. */
|
|
|
527
|
|
|
528 #ifdef __MINGW32__
|
|
|
529 /* mingw32 doesn't have enough headers to detect cygwin
|
|
|
530 apps, just do what we can. */
|
|
|
531 FILHDR * exe_header;
|
|
|
532
|
|
|
533 exe_header = (FILHDR*) executable.file_base;
|
|
|
534 if (exe_header->e_magic != DOSMAGIC)
|
|
|
535 goto unwind;
|
|
|
536
|
|
|
537 if ((char *) exe_header->e_lfanew > (char *) executable.size)
|
|
|
538 {
|
|
|
539 /* Some dos headers (pkunzip) have bogus e_lfanew fields. */
|
|
|
540 *is_dos_app = TRUE;
|
|
|
541 }
|
|
|
542 else if (exe_header->nt_signature != NT_SIGNATURE)
|
|
|
543 {
|
|
|
544 *is_dos_app = TRUE;
|
|
|
545 }
|
|
|
546 #else
|
|
|
547 IMAGE_DOS_HEADER * dos_header;
|
|
|
548 IMAGE_NT_HEADERS * nt_header;
|
|
|
549
|
|
|
550 dos_header = (PIMAGE_DOS_HEADER) executable.file_base;
|
|
|
551 if (dos_header->e_magic != IMAGE_DOS_SIGNATURE)
|
|
|
552 goto unwind;
|
|
|
553
|
|
|
554 nt_header = (PIMAGE_NT_HEADERS) ((char *) dos_header + dos_header->e_lfanew);
|
|
|
555
|
|
|
556 if ((char *) nt_header > (char *) dos_header + executable.size)
|
|
|
557 {
|
|
|
558 /* Some dos headers (pkunzip) have bogus e_lfanew fields. */
|
|
|
559 *is_dos_app = TRUE;
|
|
|
560 }
|
|
|
561 else if (nt_header->Signature != IMAGE_NT_SIGNATURE &&
|
|
|
562 LOWORD (nt_header->Signature) != IMAGE_OS2_SIGNATURE)
|
|
|
563 {
|
|
|
564 *is_dos_app = TRUE;
|
|
|
565 }
|
|
|
566 else if (nt_header->Signature == IMAGE_NT_SIGNATURE)
|
|
|
567 {
|
|
|
568 /* Look for cygwin.dll in DLL import list. */
|
|
|
569 IMAGE_DATA_DIRECTORY import_dir =
|
|
|
570 nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT];
|
|
|
571 IMAGE_IMPORT_DESCRIPTOR * imports;
|
|
|
572 IMAGE_SECTION_HEADER * section;
|
|
|
573
|
|
|
574 section = rva_to_section (import_dir.VirtualAddress, nt_header);
|
|
|
575 imports = RVA_TO_PTR (import_dir.VirtualAddress, section, executable);
|
|
|
576
|
|
|
577 for ( ; imports->Name; imports++)
|
|
|
578 {
|
|
|
579 char * dllname = RVA_TO_PTR (imports->Name, section, executable);
|
|
|
580
|
|
|
581 if (strcmp (dllname, "cygwin.dll") == 0)
|
|
|
582 {
|
|
|
583 *is_cygnus_app = TRUE;
|
|
|
584 break;
|
|
|
585 }
|
|
|
586 }
|
|
|
587 }
|
|
|
588 #endif
|
|
|
589 }
|
|
|
590
|
|
|
591 unwind:
|
|
|
592 close_file_data (&executable);
|
|
|
593 }
|
|
|
594
|
|
|
595 int
|
|
|
596 compare_env (const void *strp1, const void *strp2)
|
|
|
597 {
|
|
|
598 const char *str1 = *(const char**)strp1, *str2 = *(const char**)strp2;
|
|
|
599
|
|
|
600 while (*str1 && *str2 && *str1 != '=' && *str2 != '=')
|
|
|
601 {
|
|
|
602 if ((*str1) > (*str2))
|
|
|
603 return 1;
|
|
|
604 else if ((*str1) < (*str2))
|
|
|
605 return -1;
|
|
|
606 str1++, str2++;
|
|
|
607 }
|
|
|
608
|
|
|
609 if (*str1 == '=' && *str2 == '=')
|
|
|
610 return 0;
|
|
|
611 else if (*str1 == '=')
|
|
|
612 return -1;
|
|
|
613 else
|
|
|
614 return 1;
|
|
|
615 }
|
|
|
616
|
|
209
|
617 void
|
|
|
618 merge_and_sort_env (char **envp1, char **envp2, char **new_envp)
|
|
|
619 {
|
|
|
620 char **optr, **nptr;
|
|
|
621 int num;
|
|
|
622
|
|
|
623 nptr = new_envp;
|
|
|
624 optr = envp1;
|
|
|
625 while (*optr)
|
|
|
626 *nptr++ = *optr++;
|
|
|
627 num = optr - envp1;
|
|
|
628
|
|
|
629 optr = envp2;
|
|
|
630 while (*optr)
|
|
|
631 *nptr++ = *optr++;
|
|
|
632 num += optr - envp2;
|
|
|
633
|
|
412
|
634 qsort (new_envp, num, sizeof (char *), compare_env);
|
|
209
|
635
|
|
|
636 *nptr = NULL;
|
|
|
637 }
|
|
100
|
638
|
|
|
639 /* When a new child process is created we need to register it in our list,
|
|
|
640 so intercept spawn requests. */
|
|
|
641 int
|
|
412
|
642 sys_spawnve (int mode, CONST char *cmdname,
|
|
|
643 CONST char * CONST *argv, CONST char *CONST *envp)
|
|
100
|
644 {
|
|
|
645 Lisp_Object program, full;
|
|
|
646 char *cmdline, *env, *parg, **targ;
|
|
209
|
647 int arglen, numenv;
|
|
100
|
648 int pid;
|
|
|
649 child_process *cp;
|
|
209
|
650 int is_dos_app, is_cygnus_app;
|
|
|
651 int do_quoting = 0;
|
|
398
|
652 char escape_char = 0;
|
|
209
|
653 /* We pass our process ID to our children by setting up an environment
|
|
|
654 variable in their environment. */
|
|
|
655 char ppid_env_var_buffer[64];
|
|
|
656 char *extra_env[] = {ppid_env_var_buffer, NULL};
|
|
124
|
657 struct gcpro gcpro1;
|
|
|
658
|
|
100
|
659 /* We don't care about the other modes */
|
|
|
660 if (mode != _P_NOWAIT)
|
|
|
661 {
|
|
|
662 errno = EINVAL;
|
|
|
663 return -1;
|
|
|
664 }
|
|
|
665
|
|
|
666 /* Handle executable names without an executable suffix. */
|
|
|
667 program = make_string (cmdname, strlen (cmdname));
|
|
124
|
668 GCPRO1 (program);
|
|
100
|
669 if (NILP (Ffile_executable_p (program)))
|
|
|
670 {
|
|
|
671 full = Qnil;
|
|
398
|
672 locate_file (Vexec_path, program, Vlisp_EXEC_SUFFIXES, &full, 1);
|
|
100
|
673 if (NILP (full))
|
|
|
674 {
|
|
124
|
675 UNGCPRO;
|
|
100
|
676 errno = EINVAL;
|
|
|
677 return -1;
|
|
|
678 }
|
|
412
|
679 GET_C_STRING_FILENAME_DATA_ALLOCA (full, cmdname);
|
|
398
|
680 }
|
|
|
681 else
|
|
|
682 {
|
|
412
|
683 (char*)cmdname = alloca (strlen (argv[0]) + 1);
|
|
398
|
684 strcpy ((char*)cmdname, argv[0]);
|
|
100
|
685 }
|
|
124
|
686 UNGCPRO;
|
|
|
687
|
|
209
|
688 /* make sure argv[0] and cmdname are both in DOS format */
|
|
398
|
689 unixtodos_filename ((char*)cmdname);
|
|
239
|
690 /* #### KLUDGE */
|
|
412
|
691 ((CONST char**)argv)[0] = cmdname;
|
|
100
|
692
|
|
209
|
693 /* Determine whether program is a 16-bit DOS executable, or a Win32
|
|
|
694 executable that is implicitly linked to the Cygnus dll (implying it
|
|
|
695 was compiled with the Cygnus GNU toolchain and hence relies on
|
|
|
696 cygwin.dll to parse the command line - we use this to decide how to
|
|
|
697 escape quote chars in command line args that must be quoted). */
|
|
412
|
698 win32_executable_type (cmdname, &is_dos_app, &is_cygnus_app);
|
|
209
|
699
|
|
|
700 /* On Windows 95, if cmdname is a DOS app, we invoke a helper
|
|
|
701 application to start it by specifying the helper app as cmdname,
|
|
|
702 while leaving the real app name as argv[0]. */
|
|
|
703 if (is_dos_app)
|
|
100
|
704 {
|
|
412
|
705 cmdname = alloca (MAXPATHLEN);
|
|
209
|
706 if (egetenv ("CMDPROXY"))
|
|
398
|
707 strcpy ((char*)cmdname, egetenv ("CMDPROXY"));
|
|
209
|
708 else
|
|
|
709 {
|
|
398
|
710 strcpy ((char*)cmdname, XSTRING_DATA (Vinvocation_directory));
|
|
|
711 strcat ((char*)cmdname, "cmdproxy.exe");
|
|
209
|
712 }
|
|
398
|
713 unixtodos_filename ((char*)cmdname);
|
|
100
|
714 }
|
|
|
715
|
|
|
716 /* we have to do some conjuring here to put argv and envp into the
|
|
|
717 form CreateProcess wants... argv needs to be a space separated/null
|
|
|
718 terminated list of parameters, and envp is a null
|
|
|
719 separated/double-null terminated list of parameters.
|
|
|
720
|
|
209
|
721 Additionally, zero-length args and args containing whitespace or
|
|
|
722 quote chars need to be wrapped in double quotes - for this to work,
|
|
|
723 embedded quotes need to be escaped as well. The aim is to ensure
|
|
|
724 the child process reconstructs the argv array we start with
|
|
|
725 exactly, so we treat quotes at the beginning and end of arguments
|
|
|
726 as embedded quotes.
|
|
|
727
|
|
|
728 The Win32 GNU-based library from Cygnus doubles quotes to escape
|
|
|
729 them, while MSVC uses backslash for escaping. (Actually the MSVC
|
|
380
|
730 startup code does attempt to recognize doubled quotes and accept
|
|
209
|
731 them, but gets it wrong and ends up requiring three quotes to get a
|
|
|
732 single embedded quote!) So by default we decide whether to use
|
|
|
733 quote or backslash as the escape character based on whether the
|
|
|
734 binary is apparently a Cygnus compiled app.
|
|
|
735
|
|
|
736 Note that using backslash to escape embedded quotes requires
|
|
|
737 additional special handling if an embedded quote is already
|
|
380
|
738 preceded by backslash, or if an arg requiring quoting ends with
|
|
209
|
739 backslash. In such cases, the run of escape characters needs to be
|
|
|
740 doubled. For consistency, we apply this special handling as long
|
|
|
741 as the escape character is not quote.
|
|
100
|
742
|
|
209
|
743 Since we have no idea how large argv and envp are likely to be we
|
|
|
744 figure out list lengths on the fly and allocate them. */
|
|
|
745
|
|
|
746 if (!NILP (Vwin32_quote_process_args))
|
|
|
747 {
|
|
|
748 do_quoting = 1;
|
|
|
749 /* Override escape char by binding win32-quote-process-args to
|
|
|
750 desired character, or use t for auto-selection. */
|
|
|
751 if (INTP (Vwin32_quote_process_args))
|
|
412
|
752 escape_char = XINT (Vwin32_quote_process_args);
|
|
209
|
753 else
|
|
|
754 escape_char = is_cygnus_app ? '"' : '\\';
|
|
|
755 }
|
|
100
|
756
|
|
|
757 /* do argv... */
|
|
|
758 arglen = 0;
|
|
398
|
759 targ = (char**)argv;
|
|
100
|
760 while (*targ)
|
|
|
761 {
|
|
|
762 char * p = *targ;
|
|
209
|
763 int need_quotes = 0;
|
|
|
764 int escape_char_run = 0;
|
|
100
|
765
|
|
|
766 if (*p == 0)
|
|
209
|
767 need_quotes = 1;
|
|
|
768 for ( ; *p; p++)
|
|
|
769 {
|
|
|
770 if (*p == '"')
|
|
100
|
771 {
|
|
209
|
772 /* allow for embedded quotes to be escaped */
|
|
100
|
773 arglen++;
|
|
209
|
774 need_quotes = 1;
|
|
|
775 /* handle the case where the embedded quote is already escaped */
|
|
|
776 if (escape_char_run > 0)
|
|
|
777 {
|
|
|
778 /* To preserve the arg exactly, we need to double the
|
|
|
779 preceding escape characters (plus adding one to
|
|
|
780 escape the quote character itself). */
|
|
|
781 arglen += escape_char_run;
|
|
100
|
782 }
|
|
209
|
783 }
|
|
100
|
784 else if (*p == ' ' || *p == '\t')
|
|
209
|
785 {
|
|
|
786 need_quotes = 1;
|
|
|
787 }
|
|
|
788
|
|
|
789 if (*p == escape_char && escape_char != '"')
|
|
|
790 escape_char_run++;
|
|
|
791 else
|
|
|
792 escape_char_run = 0;
|
|
|
793 }
|
|
|
794 if (need_quotes)
|
|
|
795 {
|
|
100
|
796 arglen += 2;
|
|
209
|
797 /* handle the case where the arg ends with an escape char - we
|
|
|
798 must not let the enclosing quote be escaped. */
|
|
|
799 if (escape_char_run > 0)
|
|
|
800 arglen += escape_char_run;
|
|
|
801 }
|
|
100
|
802 arglen += strlen (*targ++) + 1;
|
|
|
803 }
|
|
412
|
804 cmdline = alloca (arglen);
|
|
398
|
805 targ = (char**)argv;
|
|
100
|
806 parg = cmdline;
|
|
|
807 while (*targ)
|
|
|
808 {
|
|
|
809 char * p = *targ;
|
|
209
|
810 int need_quotes = 0;
|
|
100
|
811
|
|
|
812 if (*p == 0)
|
|
209
|
813 need_quotes = 1;
|
|
100
|
814
|
|
209
|
815 if (do_quoting)
|
|
100
|
816 {
|
|
|
817 for ( ; *p; p++)
|
|
|
818 if (*p == ' ' || *p == '\t' || *p == '"')
|
|
209
|
819 need_quotes = 1;
|
|
100
|
820 }
|
|
209
|
821 if (need_quotes)
|
|
100
|
822 {
|
|
209
|
823 int escape_char_run = 0;
|
|
100
|
824 char * first;
|
|
|
825 char * last;
|
|
|
826
|
|
|
827 p = *targ;
|
|
|
828 first = p;
|
|
|
829 last = p + strlen (p) - 1;
|
|
|
830 *parg++ = '"';
|
|
209
|
831 #if 0
|
|
|
832 /* This version does not escape quotes if they occur at the
|
|
|
833 beginning or end of the arg - this could lead to incorrect
|
|
380
|
834 behavior when the arg itself represents a command line
|
|
209
|
835 containing quoted args. I believe this was originally done
|
|
|
836 as a hack to make some things work, before
|
|
|
837 `win32-quote-process-args' was added. */
|
|
100
|
838 while (*p)
|
|
|
839 {
|
|
|
840 if (*p == '"' && p > first && p < last)
|
|
209
|
841 *parg++ = escape_char; /* escape embedded quotes */
|
|
100
|
842 *parg++ = *p++;
|
|
|
843 }
|
|
209
|
844 #else
|
|
|
845 for ( ; *p; p++)
|
|
|
846 {
|
|
|
847 if (*p == '"')
|
|
|
848 {
|
|
|
849 /* double preceding escape chars if any */
|
|
|
850 while (escape_char_run > 0)
|
|
|
851 {
|
|
|
852 *parg++ = escape_char;
|
|
|
853 escape_char_run--;
|
|
|
854 }
|
|
|
855 /* escape all quote chars, even at beginning or end */
|
|
|
856 *parg++ = escape_char;
|
|
|
857 }
|
|
|
858 *parg++ = *p;
|
|
|
859
|
|
|
860 if (*p == escape_char && escape_char != '"')
|
|
|
861 escape_char_run++;
|
|
|
862 else
|
|
|
863 escape_char_run = 0;
|
|
|
864 }
|
|
|
865 /* double escape chars before enclosing quote */
|
|
|
866 while (escape_char_run > 0)
|
|
|
867 {
|
|
|
868 *parg++ = escape_char;
|
|
|
869 escape_char_run--;
|
|
|
870 }
|
|
|
871 #endif
|
|
100
|
872 *parg++ = '"';
|
|
|
873 }
|
|
|
874 else
|
|
|
875 {
|
|
|
876 strcpy (parg, *targ);
|
|
|
877 parg += strlen (*targ);
|
|
|
878 }
|
|
|
879 *parg++ = ' ';
|
|
|
880 targ++;
|
|
|
881 }
|
|
|
882 *--parg = '\0';
|
|
|
883
|
|
|
884 /* and envp... */
|
|
|
885 arglen = 1;
|
|
412
|
886 targ = (char**)envp;
|
|
209
|
887 numenv = 1; /* for end null */
|
|
100
|
888 while (*targ)
|
|
|
889 {
|
|
|
890 arglen += strlen (*targ++) + 1;
|
|
209
|
891 numenv++;
|
|
100
|
892 }
|
|
209
|
893 /* extra env vars... */
|
|
100
|
894 sprintf (ppid_env_var_buffer, "__PARENT_PROCESS_ID=%d",
|
|
|
895 GetCurrentProcessId ());
|
|
|
896 arglen += strlen (ppid_env_var_buffer) + 1;
|
|
209
|
897 numenv++;
|
|
100
|
898
|
|
209
|
899 /* merge env passed in and extra env into one, and sort it. */
|
|
412
|
900 targ = (char **) alloca (numenv * sizeof (char *));
|
|
|
901 merge_and_sort_env ((char**)envp, extra_env, targ);
|
|
209
|
902
|
|
|
903 /* concatenate env entries. */
|
|
412
|
904 env = alloca (arglen);
|
|
100
|
905 parg = env;
|
|
|
906 while (*targ)
|
|
|
907 {
|
|
|
908 strcpy (parg, *targ);
|
|
|
909 parg += strlen (*targ++);
|
|
|
910 *parg++ = '\0';
|
|
|
911 }
|
|
|
912 *parg++ = '\0';
|
|
|
913 *parg = '\0';
|
|
|
914
|
|
|
915 cp = new_child ();
|
|
|
916 if (cp == NULL)
|
|
|
917 {
|
|
|
918 errno = EAGAIN;
|
|
|
919 return -1;
|
|
|
920 }
|
|
|
921
|
|
|
922 /* Now create the process. */
|
|
|
923 if (!create_child (cmdname, cmdline, env, &pid, cp))
|
|
|
924 {
|
|
|
925 delete_child (cp);
|
|
|
926 errno = ENOEXEC;
|
|
|
927 return -1;
|
|
|
928 }
|
|
|
929
|
|
|
930 return pid;
|
|
|
931 }
|
|
|
932
|
|
|
933 /* Substitute for certain kill () operations */
|
|
209
|
934
|
|
|
935 static BOOL CALLBACK
|
|
|
936 find_child_console (HWND hwnd, child_process * cp)
|
|
|
937 {
|
|
|
938 DWORD thread_id;
|
|
|
939 DWORD process_id;
|
|
|
940
|
|
|
941 thread_id = GetWindowThreadProcessId (hwnd, &process_id);
|
|
|
942 if (process_id == cp->procinfo.dwProcessId)
|
|
|
943 {
|
|
|
944 char window_class[32];
|
|
|
945
|
|
|
946 GetClassName (hwnd, window_class, sizeof (window_class));
|
|
|
947 if (strcmp (window_class,
|
|
412
|
948 (os_subtype == OS_WIN95)
|
|
209
|
949 ? "tty"
|
|
|
950 : "ConsoleWindowClass") == 0)
|
|
|
951 {
|
|
|
952 cp->hwnd = hwnd;
|
|
|
953 return FALSE;
|
|
|
954 }
|
|
|
955 }
|
|
|
956 /* keep looking */
|
|
|
957 return TRUE;
|
|
|
958 }
|
|
|
959
|
|
100
|
960 int
|
|
|
961 sys_kill (int pid, int sig)
|
|
|
962 {
|
|
|
963 child_process *cp;
|
|
|
964 HANDLE proc_hand;
|
|
|
965 int need_to_free = 0;
|
|
|
966 int rc = 0;
|
|
|
967
|
|
|
968 /* Only handle signals that will result in the process dying */
|
|
|
969 if (sig != SIGINT && sig != SIGKILL && sig != SIGQUIT && sig != SIGHUP)
|
|
|
970 {
|
|
|
971 errno = EINVAL;
|
|
|
972 return -1;
|
|
|
973 }
|
|
|
974
|
|
|
975 cp = find_child_pid (pid);
|
|
|
976 if (cp == NULL)
|
|
|
977 {
|
|
|
978 proc_hand = OpenProcess (PROCESS_TERMINATE, 0, pid);
|
|
|
979 if (proc_hand == NULL)
|
|
|
980 {
|
|
|
981 errno = EPERM;
|
|
|
982 return -1;
|
|
|
983 }
|
|
|
984 need_to_free = 1;
|
|
|
985 }
|
|
|
986 else
|
|
|
987 {
|
|
|
988 proc_hand = cp->procinfo.hProcess;
|
|
|
989 pid = cp->procinfo.dwProcessId;
|
|
209
|
990
|
|
|
991 /* Try to locate console window for process. */
|
|
398
|
992 EnumWindows ((WNDENUMPROC)find_child_console, (LPARAM) cp);
|
|
100
|
993 }
|
|
|
994
|
|
|
995 if (sig == SIGINT)
|
|
|
996 {
|
|
209
|
997 if (NILP (Vwin32_start_process_share_console) && cp && cp->hwnd)
|
|
|
998 {
|
|
|
999 BYTE control_scan_code = (BYTE) MapVirtualKey (VK_CONTROL, 0);
|
|
|
1000 BYTE vk_break_code = VK_CANCEL;
|
|
|
1001 BYTE break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0);
|
|
|
1002 HWND foreground_window;
|
|
|
1003
|
|
|
1004 if (break_scan_code == 0)
|
|
|
1005 {
|
|
|
1006 /* Fake Ctrl-C if we can't manage Ctrl-Break. */
|
|
|
1007 vk_break_code = 'C';
|
|
|
1008 break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0);
|
|
|
1009 }
|
|
|
1010
|
|
|
1011 foreground_window = GetForegroundWindow ();
|
|
|
1012 if (foreground_window && SetForegroundWindow (cp->hwnd))
|
|
|
1013 {
|
|
|
1014 /* Generate keystrokes as if user had typed Ctrl-Break or Ctrl-C. */
|
|
|
1015 keybd_event (VK_CONTROL, control_scan_code, 0, 0);
|
|
|
1016 keybd_event (vk_break_code, break_scan_code, 0, 0);
|
|
|
1017 keybd_event (vk_break_code, break_scan_code, KEYEVENTF_KEYUP, 0);
|
|
|
1018 keybd_event (VK_CONTROL, control_scan_code, KEYEVENTF_KEYUP, 0);
|
|
|
1019
|
|
|
1020 /* Sleep for a bit to give time for Emacs frame to respond
|
|
|
1021 to focus change events (if Emacs was active app). */
|
|
|
1022 Sleep (10);
|
|
|
1023
|
|
|
1024 SetForegroundWindow (foreground_window);
|
|
|
1025 }
|
|
|
1026 }
|
|
100
|
1027 /* Ctrl-Break is NT equivalent of SIGINT. */
|
|
209
|
1028 else if (!GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, pid))
|
|
100
|
1029 {
|
|
|
1030 DebPrint (("sys_kill.GenerateConsoleCtrlEvent return %d "
|
|
|
1031 "for pid %lu\n", GetLastError (), pid));
|
|
|
1032 errno = EINVAL;
|
|
|
1033 rc = -1;
|
|
|
1034 }
|
|
|
1035 }
|
|
|
1036 else
|
|
|
1037 {
|
|
209
|
1038 if (NILP (Vwin32_start_process_share_console) && cp && cp->hwnd)
|
|
|
1039 {
|
|
|
1040 #if 1
|
|
412
|
1041 if (os_subtype == OS_WIN95)
|
|
209
|
1042 {
|
|
|
1043 /*
|
|
|
1044 Another possibility is to try terminating the VDM out-right by
|
|
|
1045 calling the Shell VxD (id 0x17) V86 interface, function #4
|
|
|
1046 "SHELL_Destroy_VM", ie.
|
|
|
1047
|
|
|
1048 mov edx,4
|
|
|
1049 mov ebx,vm_handle
|
|
|
1050 call shellapi
|
|
|
1051
|
|
|
1052 First need to determine the current VM handle, and then arrange for
|
|
|
1053 the shellapi call to be made from the system vm (by using
|
|
|
1054 Switch_VM_and_callback).
|
|
|
1055
|
|
|
1056 Could try to invoke DestroyVM through CallVxD.
|
|
|
1057
|
|
|
1058 */
|
|
|
1059 #if 0
|
|
|
1060 /* On Win95, posting WM_QUIT causes the 16-bit subsystem
|
|
|
1061 to hang when cmdproxy is used in conjunction with
|
|
|
1062 command.com for an interactive shell. Posting
|
|
|
1063 WM_CLOSE pops up a dialog that, when Yes is selected,
|
|
|
1064 does the same thing. TerminateProcess is also less
|
|
|
1065 than ideal in that subprocesses tend to stick around
|
|
|
1066 until the machine is shutdown, but at least it
|
|
|
1067 doesn't freeze the 16-bit subsystem. */
|
|
|
1068 PostMessage (cp->hwnd, WM_QUIT, 0xff, 0);
|
|
|
1069 #endif
|
|
|
1070 if (!TerminateProcess (proc_hand, 0xff))
|
|
|
1071 {
|
|
|
1072 DebPrint (("sys_kill.TerminateProcess returned %d "
|
|
|
1073 "for pid %lu\n", GetLastError (), pid));
|
|
|
1074 errno = EINVAL;
|
|
|
1075 rc = -1;
|
|
|
1076 }
|
|
|
1077 }
|
|
|
1078 else
|
|
|
1079 #endif
|
|
|
1080 PostMessage (cp->hwnd, WM_CLOSE, 0, 0);
|
|
|
1081 }
|
|
100
|
1082 /* Kill the process. On Win32 this doesn't kill child processes
|
|
|
1083 so it doesn't work very well for shells which is why it's not
|
|
209
|
1084 used in every case. */
|
|
|
1085 else if (!TerminateProcess (proc_hand, 0xff))
|
|
100
|
1086 {
|
|
|
1087 DebPrint (("sys_kill.TerminateProcess returned %d "
|
|
|
1088 "for pid %lu\n", GetLastError (), pid));
|
|
|
1089 errno = EINVAL;
|
|
|
1090 rc = -1;
|
|
|
1091 }
|
|
|
1092 }
|
|
|
1093
|
|
|
1094 if (need_to_free)
|
|
|
1095 CloseHandle (proc_hand);
|
|
|
1096
|
|
|
1097 return rc;
|
|
|
1098 }
|
|
|
1099
|
|
|
1100 #if 0
|
|
209
|
1101 /* Sync with FSF Emacs 19.34.6 note: ifdef'ed out in XEmacs */
|
|
412
|
1102 extern int report_file_error (CONST char *, Lisp_Object);
|
|
100
|
1103 #endif
|
|
|
1104 /* The following two routines are used to manipulate stdin, stdout, and
|
|
|
1105 stderr of our child processes.
|
|
|
1106
|
|
|
1107 Assuming that in, out, and err are *not* inheritable, we make them
|
|
|
1108 stdin, stdout, and stderr of the child as follows:
|
|
|
1109
|
|
|
1110 - Save the parent's current standard handles.
|
|
|
1111 - Set the std handles to inheritable duplicates of the ones being passed in.
|
|
|
1112 (Note that _get_osfhandle() is an io.h procedure that retrieves the
|
|
|
1113 NT file handle for a crt file descriptor.)
|
|
|
1114 - Spawn the child, which inherits in, out, and err as stdin,
|
|
|
1115 stdout, and stderr. (see Spawnve)
|
|
|
1116 - Close the std handles passed to the child.
|
|
|
1117 - Reset the parent's standard handles to the saved handles.
|
|
|
1118 (see reset_standard_handles)
|
|
|
1119 We assume that the caller closes in, out, and err after calling us. */
|
|
|
1120
|
|
|
1121 void
|
|
|
1122 prepare_standard_handles (int in, int out, int err, HANDLE handles[3])
|
|
|
1123 {
|
|
|
1124 HANDLE parent;
|
|
|
1125 HANDLE newstdin, newstdout, newstderr;
|
|
|
1126
|
|
|
1127 parent = GetCurrentProcess ();
|
|
|
1128
|
|
|
1129 handles[0] = GetStdHandle (STD_INPUT_HANDLE);
|
|
|
1130 handles[1] = GetStdHandle (STD_OUTPUT_HANDLE);
|
|
|
1131 handles[2] = GetStdHandle (STD_ERROR_HANDLE);
|
|
|
1132
|
|
|
1133 /* make inheritable copies of the new handles */
|
|
|
1134 if (!DuplicateHandle (parent,
|
|
|
1135 (HANDLE) _get_osfhandle (in),
|
|
|
1136 parent,
|
|
|
1137 &newstdin,
|
|
|
1138 0,
|
|
|
1139 TRUE,
|
|
|
1140 DUPLICATE_SAME_ACCESS))
|
|
|
1141 report_file_error ("Duplicating input handle for child", Qnil);
|
|
|
1142
|
|
|
1143 if (!DuplicateHandle (parent,
|
|
|
1144 (HANDLE) _get_osfhandle (out),
|
|
|
1145 parent,
|
|
|
1146 &newstdout,
|
|
|
1147 0,
|
|
|
1148 TRUE,
|
|
|
1149 DUPLICATE_SAME_ACCESS))
|
|
|
1150 report_file_error ("Duplicating output handle for child", Qnil);
|
|
|
1151
|
|
|
1152 if (!DuplicateHandle (parent,
|
|
|
1153 (HANDLE) _get_osfhandle (err),
|
|
|
1154 parent,
|
|
|
1155 &newstderr,
|
|
|
1156 0,
|
|
|
1157 TRUE,
|
|
|
1158 DUPLICATE_SAME_ACCESS))
|
|
|
1159 report_file_error ("Duplicating error handle for child", Qnil);
|
|
|
1160
|
|
|
1161 /* and store them as our std handles */
|
|
|
1162 if (!SetStdHandle (STD_INPUT_HANDLE, newstdin))
|
|
|
1163 report_file_error ("Changing stdin handle", Qnil);
|
|
|
1164
|
|
|
1165 if (!SetStdHandle (STD_OUTPUT_HANDLE, newstdout))
|
|
|
1166 report_file_error ("Changing stdout handle", Qnil);
|
|
|
1167
|
|
|
1168 if (!SetStdHandle (STD_ERROR_HANDLE, newstderr))
|
|
|
1169 report_file_error ("Changing stderr handle", Qnil);
|
|
|
1170 }
|
|
|
1171
|
|
|
1172 void
|
|
|
1173 reset_standard_handles (int in, int out, int err, HANDLE handles[3])
|
|
|
1174 {
|
|
|
1175 /* close the duplicated handles passed to the child */
|
|
|
1176 CloseHandle (GetStdHandle (STD_INPUT_HANDLE));
|
|
|
1177 CloseHandle (GetStdHandle (STD_OUTPUT_HANDLE));
|
|
|
1178 CloseHandle (GetStdHandle (STD_ERROR_HANDLE));
|
|
|
1179
|
|
|
1180 /* now restore parent's saved std handles */
|
|
|
1181 SetStdHandle (STD_INPUT_HANDLE, handles[0]);
|
|
|
1182 SetStdHandle (STD_OUTPUT_HANDLE, handles[1]);
|
|
|
1183 SetStdHandle (STD_ERROR_HANDLE, handles[2]);
|
|
|
1184 }
|
|
|
1185
|
|
209
|
1186 void
|
|
288
|
1187 set_process_dir (const char * dir)
|
|
209
|
1188 {
|
|
|
1189 process_dir = dir;
|
|
|
1190 }
|
|
100
|
1191
|
|
209
|
1192 /* Some miscellaneous functions that are Windows specific, but not GUI
|
|
|
1193 specific (ie. are applicable in terminal or batch mode as well). */
|
|
|
1194
|
|
412
|
1195 /* lifted from fileio.c */
|
|
|
1196 #define CORRECT_DIR_SEPS(s) \
|
|
|
1197 do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \
|
|
|
1198 else unixtodos_filename (s); \
|
|
|
1199 } while (0)
|
|
|
1200
|
|
209
|
1201 DEFUN ("win32-short-file-name", Fwin32_short_file_name, 1, 1, "", /*
|
|
|
1202 Return the short file name version (8.3) of the full path of FILENAME.
|
|
|
1203 If FILENAME does not exist, return nil.
|
|
|
1204 All path elements in FILENAME are converted to their short names.
|
|
|
1205 */
|
|
|
1206 (filename))
|
|
|
1207 {
|
|
|
1208 char shortname[MAX_PATH];
|
|
|
1209
|
|
288
|
1210 CHECK_STRING (filename);
|
|
209
|
1211
|
|
|
1212 /* first expand it. */
|
|
|
1213 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1214
|
|
|
1215 /* luckily, this returns the short version of each element in the path. */
|
|
|
1216 if (GetShortPathName (XSTRING_DATA (filename), shortname, MAX_PATH) == 0)
|
|
|
1217 return Qnil;
|
|
|
1218
|
|
|
1219 CORRECT_DIR_SEPS (shortname);
|
|
|
1220
|
|
|
1221 return build_string (shortname);
|
|
|
1222 }
|
|
|
1223
|
|
|
1224
|
|
|
1225 DEFUN ("win32-long-file-name", Fwin32_long_file_name, 1, 1, "", /*
|
|
|
1226 Return the long file name version of the full path of FILENAME.
|
|
|
1227 If FILENAME does not exist, return nil.
|
|
|
1228 All path elements in FILENAME are converted to their long names.
|
|
|
1229 */
|
|
|
1230 (filename))
|
|
|
1231 {
|
|
|
1232 char longname[ MAX_PATH ];
|
|
|
1233
|
|
288
|
1234 CHECK_STRING (filename);
|
|
209
|
1235
|
|
|
1236 /* first expand it. */
|
|
|
1237 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1238
|
|
|
1239 if (!win32_get_long_filename (XSTRING_DATA (filename), longname, MAX_PATH))
|
|
|
1240 return Qnil;
|
|
|
1241
|
|
|
1242 CORRECT_DIR_SEPS (longname);
|
|
|
1243
|
|
|
1244 return build_string (longname);
|
|
|
1245 }
|
|
|
1246
|
|
|
1247 DEFUN ("win32-set-process-priority", Fwin32_set_process_priority, 2, 2, "", /*
|
|
|
1248 Set the priority of PROCESS to PRIORITY.
|
|
|
1249 If PROCESS is nil, the priority of Emacs is changed, otherwise the
|
|
|
1250 priority of the process whose pid is PROCESS is changed.
|
|
|
1251 PRIORITY should be one of the symbols high, normal, or low;
|
|
|
1252 any other symbol will be interpreted as normal.
|
|
|
1253
|
|
|
1254 If successful, the return value is t, otherwise nil.
|
|
|
1255 */
|
|
|
1256 (process, priority))
|
|
|
1257 {
|
|
|
1258 HANDLE proc_handle = GetCurrentProcess ();
|
|
|
1259 DWORD priority_class = NORMAL_PRIORITY_CLASS;
|
|
|
1260 Lisp_Object result = Qnil;
|
|
|
1261
|
|
288
|
1262 CHECK_SYMBOL (priority);
|
|
209
|
1263
|
|
|
1264 if (!NILP (process))
|
|
|
1265 {
|
|
|
1266 DWORD pid;
|
|
|
1267 child_process *cp;
|
|
|
1268
|
|
|
1269 CHECK_INT (process);
|
|
|
1270
|
|
|
1271 /* Allow pid to be an internally generated one, or one obtained
|
|
|
1272 externally. This is necessary because real pids on Win95 are
|
|
|
1273 negative. */
|
|
|
1274
|
|
|
1275 pid = XINT (process);
|
|
|
1276 cp = find_child_pid (pid);
|
|
|
1277 if (cp != NULL)
|
|
|
1278 pid = cp->procinfo.dwProcessId;
|
|
|
1279
|
|
|
1280 proc_handle = OpenProcess (PROCESS_SET_INFORMATION, FALSE, pid);
|
|
|
1281 }
|
|
|
1282
|
|
|
1283 if (EQ (priority, Qhigh))
|
|
|
1284 priority_class = HIGH_PRIORITY_CLASS;
|
|
|
1285 else if (EQ (priority, Qlow))
|
|
|
1286 priority_class = IDLE_PRIORITY_CLASS;
|
|
|
1287
|
|
|
1288 if (proc_handle != NULL)
|
|
|
1289 {
|
|
|
1290 if (SetPriorityClass (proc_handle, priority_class))
|
|
|
1291 result = Qt;
|
|
|
1292 if (!NILP (process))
|
|
|
1293 CloseHandle (proc_handle);
|
|
|
1294 }
|
|
|
1295
|
|
|
1296 return result;
|
|
|
1297 }
|
|
|
1298
|
|
|
1299
|
|
|
1300 DEFUN ("win32-get-locale-info", Fwin32_get_locale_info, 1, 2, "", /*
|
|
|
1301 "Return information about the Windows locale LCID.
|
|
|
1302 By default, return a three letter locale code which encodes the default
|
|
380
|
1303 language as the first two characters, and the country or regional variant
|
|
209
|
1304 as the third letter. For example, ENU refers to `English (United States)',
|
|
|
1305 while ENC means `English (Canadian)'.
|
|
|
1306
|
|
|
1307 If the optional argument LONGFORM is non-nil, the long form of the locale
|
|
|
1308 name is returned, e.g. `English (United States)' instead.
|
|
|
1309
|
|
|
1310 If LCID (a 16-bit number) is not a valid locale, the result is nil.
|
|
|
1311 */
|
|
|
1312 (lcid, longform))
|
|
|
1313 {
|
|
|
1314 int got_abbrev;
|
|
|
1315 int got_full;
|
|
|
1316 char abbrev_name[32] = { 0 };
|
|
|
1317 char full_name[256] = { 0 };
|
|
|
1318
|
|
|
1319 CHECK_INT (lcid);
|
|
|
1320
|
|
|
1321 if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED))
|
|
|
1322 return Qnil;
|
|
|
1323
|
|
|
1324 if (NILP (longform))
|
|
|
1325 {
|
|
|
1326 got_abbrev = GetLocaleInfo (XINT (lcid),
|
|
|
1327 LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP,
|
|
|
1328 abbrev_name, sizeof (abbrev_name));
|
|
|
1329 if (got_abbrev)
|
|
|
1330 return build_string (abbrev_name);
|
|
|
1331 }
|
|
|
1332 else
|
|
|
1333 {
|
|
|
1334 got_full = GetLocaleInfo (XINT (lcid),
|
|
|
1335 LOCALE_SLANGUAGE | LOCALE_USE_CP_ACP,
|
|
|
1336 full_name, sizeof (full_name));
|
|
|
1337 if (got_full)
|
|
|
1338 return build_string (full_name);
|
|
|
1339 }
|
|
|
1340
|
|
|
1341 return Qnil;
|
|
|
1342 }
|
|
|
1343
|
|
|
1344
|
|
|
1345 DEFUN ("win32-get-current-locale-id", Fwin32_get_current_locale_id, 0, 0, "", /*
|
|
|
1346 "Return Windows locale id for current locale setting.
|
|
|
1347 This is a numerical value; use `win32-get-locale-info' to convert to a
|
|
|
1348 human-readable form.
|
|
|
1349 */
|
|
|
1350 ())
|
|
|
1351 {
|
|
|
1352 return make_int (GetThreadLocale ());
|
|
|
1353 }
|
|
|
1354
|
|
|
1355
|
|
|
1356 DEFUN ("win32-get-default-locale-id", Fwin32_get_default_locale_id, 0, 1, "", /*
|
|
|
1357 "Return Windows locale id for default locale setting.
|
|
|
1358 By default, the system default locale setting is returned; if the optional
|
|
|
1359 parameter USERP is non-nil, the user default locale setting is returned.
|
|
|
1360 This is a numerical value; use `win32-get-locale-info' to convert to a
|
|
|
1361 human-readable form.
|
|
|
1362 */
|
|
|
1363 (userp))
|
|
|
1364 {
|
|
|
1365 if (NILP (userp))
|
|
|
1366 return make_int (GetSystemDefaultLCID ());
|
|
|
1367 return make_int (GetUserDefaultLCID ());
|
|
|
1368 }
|
|
|
1369
|
|
|
1370 DWORD int_from_hex (char * s)
|
|
|
1371 {
|
|
|
1372 DWORD val = 0;
|
|
|
1373 static char hex[] = "0123456789abcdefABCDEF";
|
|
|
1374 char * p;
|
|
|
1375
|
|
|
1376 while (*s && (p = strchr(hex, *s)) != NULL)
|
|
|
1377 {
|
|
|
1378 unsigned digit = p - hex;
|
|
|
1379 if (digit > 15)
|
|
|
1380 digit -= 6;
|
|
|
1381 val = val * 16 + digit;
|
|
|
1382 s++;
|
|
|
1383 }
|
|
|
1384 return val;
|
|
|
1385 }
|
|
|
1386
|
|
|
1387 /* We need to build a global list, since the EnumSystemLocale callback
|
|
|
1388 function isn't given a context pointer. */
|
|
|
1389 Lisp_Object Vwin32_valid_locale_ids;
|
|
|
1390
|
|
|
1391 BOOL CALLBACK enum_locale_fn (LPTSTR localeNum)
|
|
|
1392 {
|
|
|
1393 DWORD id = int_from_hex (localeNum);
|
|
|
1394 Vwin32_valid_locale_ids = Fcons (make_int (id), Vwin32_valid_locale_ids);
|
|
|
1395 return TRUE;
|
|
|
1396 }
|
|
|
1397
|
|
|
1398 DEFUN ("win32-get-valid-locale-ids", Fwin32_get_valid_locale_ids, 0, 0, "", /*
|
|
|
1399 Return list of all valid Windows locale ids.
|
|
|
1400 Each id is a numerical value; use `win32-get-locale-info' to convert to a
|
|
|
1401 human-readable form.
|
|
|
1402 */
|
|
|
1403 ())
|
|
|
1404 {
|
|
|
1405 Vwin32_valid_locale_ids = Qnil;
|
|
|
1406
|
|
|
1407 EnumSystemLocales (enum_locale_fn, LCID_SUPPORTED);
|
|
|
1408
|
|
|
1409 Vwin32_valid_locale_ids = Fnreverse (Vwin32_valid_locale_ids);
|
|
|
1410 return Vwin32_valid_locale_ids;
|
|
|
1411 }
|
|
|
1412
|
|
|
1413
|
|
|
1414 DEFUN ("win32-set-current-locale", Fwin32_set_current_locale, 1, 1, "", /*
|
|
|
1415 Make Windows locale LCID be the current locale setting for Emacs.
|
|
|
1416 If successful, the new locale id is returned, otherwise nil.
|
|
|
1417 */
|
|
|
1418 (lcid))
|
|
|
1419 {
|
|
|
1420 CHECK_INT (lcid);
|
|
|
1421
|
|
|
1422 if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED))
|
|
|
1423 return Qnil;
|
|
|
1424
|
|
|
1425 if (!SetThreadLocale (XINT (lcid)))
|
|
|
1426 return Qnil;
|
|
|
1427
|
|
|
1428 /* Sync with FSF Emacs 19.34.6 note: dwWinThreadId declared in
|
|
|
1429 w32term.h and defined in w32fns.c, both of which are not in current
|
|
412
|
1430 XEmacs. ### Check what we lose by ifdef'ing out these. --marcpa */
|
|
209
|
1431 #if 0
|
|
|
1432 /* Need to set input thread locale if present. */
|
|
|
1433 if (dwWinThreadId)
|
|
|
1434 /* Reply is not needed. */
|
|
|
1435 PostThreadMessage (dwWinThreadId, WM_EMACS_SETLOCALE, XINT (lcid), 0);
|
|
|
1436 #endif
|
|
|
1437
|
|
|
1438 return make_int (GetThreadLocale ());
|
|
|
1439 }
|
|
|
1440
|
|
|
1441
|
|
288
|
1442 void
|
|
412
|
1443 syms_of_ntproc ()
|
|
100
|
1444 {
|
|
412
|
1445 Qhigh = intern ("high");
|
|
|
1446 Qlow = intern ("low");
|
|
|
1447
|
|
209
|
1448 DEFSUBR (Fwin32_short_file_name);
|
|
|
1449 DEFSUBR (Fwin32_long_file_name);
|
|
|
1450 DEFSUBR (Fwin32_set_process_priority);
|
|
|
1451 DEFSUBR (Fwin32_get_locale_info);
|
|
|
1452 DEFSUBR (Fwin32_get_current_locale_id);
|
|
|
1453 DEFSUBR (Fwin32_get_default_locale_id);
|
|
|
1454 DEFSUBR (Fwin32_get_valid_locale_ids);
|
|
|
1455 DEFSUBR (Fwin32_set_current_locale);
|
|
100
|
1456
|
|
|
1457 DEFVAR_LISP ("win32-quote-process-args", &Vwin32_quote_process_args /*
|
|
209
|
1458 Non-nil enables quoting of process arguments to ensure correct parsing.
|
|
100
|
1459 Because Windows does not directly pass argv arrays to child processes,
|
|
|
1460 programs have to reconstruct the argv array by parsing the command
|
|
|
1461 line string. For an argument to contain a space, it must be enclosed
|
|
|
1462 in double quotes or it will be parsed as multiple arguments.
|
|
|
1463
|
|
209
|
1464 If the value is a character, that character will be used to escape any
|
|
|
1465 quote characters that appear, otherwise a suitable escape character
|
|
|
1466 will be chosen based on the type of the program.
|
|
|
1467 */ );
|
|
|
1468 Vwin32_quote_process_args = Qt;
|
|
|
1469
|
|
|
1470 DEFVAR_LISP ("win32-start-process-show-window",
|
|
|
1471 &Vwin32_start_process_show_window /*
|
|
|
1472 When nil, processes started via start-process hide their windows.
|
|
|
1473 When non-nil, they show their window in the method of their choice.
|
|
|
1474 */ );
|
|
|
1475 Vwin32_start_process_show_window = Qnil;
|
|
|
1476
|
|
|
1477 DEFVAR_LISP ("win32-start-process-share-console",
|
|
|
1478 &Vwin32_start_process_share_console /*
|
|
|
1479 When nil, processes started via start-process are given a new console.
|
|
|
1480 When non-nil, they share the Emacs console; this has the limitation of
|
|
|
1481 allowing only only DOS subprocess to run at a time (whether started directly
|
|
|
1482 or indirectly by Emacs), and preventing Emacs from cleanly terminating the
|
|
|
1483 subprocess group, but may allow Emacs to interrupt a subprocess that doesn't
|
|
|
1484 otherwise respond to interrupts from Emacs.
|
|
|
1485 */ );
|
|
412
|
1486 Vwin32_start_process_share_console = Qnil;
|
|
100
|
1487
|
|
282
|
1488 DEFVAR_LISP ("win32-pipe-read-delay", &Vwin32_pipe_read_delay /*
|
|
209
|
1489 Forced delay before reading subprocess output.
|
|
100
|
1490 This is done to improve the buffering of subprocess output, by
|
|
|
1491 avoiding the inefficiency of frequently reading small amounts of data.
|
|
|
1492
|
|
|
1493 If positive, the value is the number of milliseconds to sleep before
|
|
|
1494 reading the subprocess output. If negative, the magnitude is the number
|
|
|
1495 of time slices to wait (effectively boosting the priority of the child
|
|
209
|
1496 process temporarily). A value of zero disables waiting entirely.
|
|
|
1497 */ );
|
|
282
|
1498 Vwin32_pipe_read_delay = make_int (50);
|
|
100
|
1499
|
|
209
|
1500 #if 0
|
|
|
1501 DEFVAR_LISP ("win32-generate-fake-inodes", &Vwin32_generate_fake_inodes /*
|
|
|
1502 "Non-nil means attempt to fake realistic inode values.
|
|
|
1503 This works by hashing the truename of files, and should detect
|
|
|
1504 aliasing between long and short (8.3 DOS) names, but can have
|
|
380
|
1505 false positives because of hash collisions. Note that determining
|
|
209
|
1506 the truename of a file can be slow.
|
|
|
1507 */ );
|
|
|
1508 Vwin32_generate_fake_inodes = Qnil;
|
|
|
1509 #endif
|
|
100
|
1510 }
|
|
|
1511 /* end of ntproc.c */
|
