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428
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1 /* Asynchronous subprocess implementation for Win32
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2 Copyright (C) 1985, 1986, 1987, 1988, 1992, 1993, 1994, 1995
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3 Free Software Foundation, Inc.
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4 Copyright (C) 1995 Sun Microsystems, Inc.
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5 Copyright (C) 1995, 1996 Ben Wing.
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6
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7 This file is part of XEmacs.
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8
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9 XEmacs is free software; you can redistribute it and/or modify it
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10 under the terms of the GNU General Public License as published by the
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11 Free Software Foundation; either version 2, or (at your option) any
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12 later version.
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13
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14 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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17 for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with XEmacs; see the file COPYING. If not, write to
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21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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22 Boston, MA 02111-1307, USA. */
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23
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24 /* Written by Kirill M. Katsnelson <kkm@kis.ru>, April 1998 */
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25
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26 #include <config.h>
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27 #include "lisp.h"
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28
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29 #include "hash.h"
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30 #include "lstream.h"
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31 #include "process.h"
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32 #include "procimpl.h"
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33 #include "sysdep.h"
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34
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35 #include <windows.h>
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36 #ifndef __MINGW32__
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37 #include <shellapi.h>
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38 #else
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39 #include <errno.h>
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40 #endif
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41 #include <signal.h>
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42 #ifdef HAVE_SOCKETS
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43 #include <winsock.h>
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44 #endif
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45
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46 /* Arbitrary size limit for code fragments passed to run_in_other_process */
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47 #define FRAGMENT_CODE_SIZE 32
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48
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49 /* Bound by winnt.el */
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50 Lisp_Object Qnt_quote_process_args;
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51
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52 /* Implementation-specific data. Pointed to by Lisp_Process->process_data */
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53 struct nt_process_data
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54 {
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55 HANDLE h_process;
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430
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56 int need_enable_child_signals;
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428
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57 };
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58
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59 #define NT_DATA(p) ((struct nt_process_data*)((p)->process_data))
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60
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61 /*-----------------------------------------------------------------------*/
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62 /* Process helpers */
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63 /*-----------------------------------------------------------------------*/
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64
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65 /* This one breaks process abstraction. Prototype is in console-msw.h,
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66 used by select_process method in event-msw.c */
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67 HANDLE
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68 get_nt_process_handle (struct Lisp_Process *p)
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69 {
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70 return (NT_DATA (p)->h_process);
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71 }
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72
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73 /*-----------------------------------------------------------------------*/
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74 /* Running remote threads. See Microsoft Systems Journal 1994 Number 5 */
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75 /* Jeffrey Richter, Load Your 32-bit DLL into Another Process's Address..*/
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76 /*-----------------------------------------------------------------------*/
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77
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78 typedef struct
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79 {
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80 HANDLE h_process;
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81 HANDLE h_thread;
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82 LPVOID address;
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83 } process_memory;
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84
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85 /*
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86 * Allocate SIZE bytes in H_PROCESS address space. Fill in PMC used
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87 * further by other routines. Return nonzero if successful.
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88 *
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89 * The memory in other process is allocated by creating a suspended
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90 * thread. Initial stack of that thread is used as the memory
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91 * block. The thread entry point is the routine ExitThread in
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92 * kernel32.dll, so the allocated memory is freed just by resuming the
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93 * thread, which immediately terminates after that.
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94 */
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95
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96 static int
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97 alloc_process_memory (HANDLE h_process, size_t size,
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98 process_memory* pmc)
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99 {
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100 LPTHREAD_START_ROUTINE adr_ExitThread =
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101 (LPTHREAD_START_ROUTINE)
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102 GetProcAddress (GetModuleHandle ("kernel32"), "ExitThread");
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103 DWORD dw_unused;
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104 CONTEXT context;
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105 MEMORY_BASIC_INFORMATION mbi;
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106
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107 pmc->h_process = h_process;
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108 pmc->h_thread = CreateRemoteThread (h_process, NULL, size,
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109 adr_ExitThread, NULL,
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110 CREATE_SUSPENDED, &dw_unused);
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111 if (pmc->h_thread == NULL)
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112 return 0;
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113
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114 /* Get context, for thread's stack pointer */
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115 context.ContextFlags = CONTEXT_CONTROL;
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116 if (!GetThreadContext (pmc->h_thread, &context))
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117 goto failure;
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118
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119 /* Determine base address of the committed range */
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120 if (sizeof(mbi) != VirtualQueryEx (h_process,
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121 #if defined (_X86_)
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122 (LPDWORD)context.Esp - 1,
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123 #elif defined (_ALPHA_)
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124 (LPDWORD)context.IntSp - 1,
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125 #else
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126 #error Unknown processor architecture
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127 #endif
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128 &mbi, sizeof(mbi)))
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129 goto failure;
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130
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131 /* Change the page protection of the allocated memory to executable,
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132 read, and write. */
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133 if (!VirtualProtectEx (h_process, mbi.BaseAddress, size,
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134 PAGE_EXECUTE_READWRITE, &dw_unused))
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135 goto failure;
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136
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137 pmc->address = mbi.BaseAddress;
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138 return 1;
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139
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140 failure:
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141 ResumeThread (pmc->h_thread);
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142 pmc->address = 0;
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143 return 0;
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144 }
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145
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146 static void
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147 free_process_memory (process_memory* pmc)
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148 {
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149 ResumeThread (pmc->h_thread);
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150 }
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151
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152 /*
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153 * Run ROUTINE in the context of process determined by H_PROCESS. The
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154 * routine is passed the address of DATA as parameter. The ROUTINE must
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155 * not be longer than ROUTINE_CODE_SIZE bytes. DATA_SIZE is the size of
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156 * DATA structure.
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157 *
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158 * Note that the code must be positionally independent, and compiled
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159 * without stack checks (they cause implicit calls into CRT so will
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160 * fail). DATA should not refer any data in calling process, as both
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161 * routine and its data are copied into remote process. Size of data
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162 * and code together should not exceed one page (4K on x86 systems).
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163 *
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164 * Return the value returned by ROUTINE, or (DWORD)-1 if call failed.
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165 */
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166 static DWORD
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167 run_in_other_process (HANDLE h_process,
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168 LPTHREAD_START_ROUTINE routine,
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169 LPVOID data, size_t data_size)
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170 {
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171 process_memory pm;
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172 CONST size_t code_size = FRAGMENT_CODE_SIZE;
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173 /* Need at most 3 extra bytes of memory, for data alignment */
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174 size_t total_size = code_size + data_size + 3;
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175 LPVOID remote_data;
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176 HANDLE h_thread;
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177 DWORD dw_unused;
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178
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179 /* Allocate memory */
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180 if (!alloc_process_memory (h_process, total_size, &pm))
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181 return (DWORD)-1;
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182
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183 /* Copy code */
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184 if (!WriteProcessMemory (h_process, pm.address, (LPVOID)routine,
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185 code_size, NULL))
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186 goto failure;
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187
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188 /* Copy data */
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189 if (data_size)
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190 {
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191 remote_data = (LPBYTE)pm.address + ((code_size + 4) & ~3);
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192 if (!WriteProcessMemory (h_process, remote_data, data, data_size, NULL))
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193 goto failure;
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194 }
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195 else
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196 remote_data = NULL;
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197
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198 /* Execute the remote copy of code, passing it remote data */
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199 h_thread = CreateRemoteThread (h_process, NULL, 0,
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200 (LPTHREAD_START_ROUTINE) pm.address,
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201 remote_data, 0, &dw_unused);
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202 if (h_thread == NULL)
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203 goto failure;
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204
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205 /* Wait till thread finishes */
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206 WaitForSingleObject (h_thread, INFINITE);
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207
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208 /* Free remote memory */
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209 free_process_memory (&pm);
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210
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211 /* Return thread's exit code */
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212 {
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213 DWORD exit_code;
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214 GetExitCodeThread (h_thread, &exit_code);
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215 CloseHandle (h_thread);
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216 return exit_code;
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217 }
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218
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219 failure:
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220 free_process_memory (&pm);
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221 return (DWORD)-1;
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222 }
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223
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224 /*-----------------------------------------------------------------------*/
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225 /* Sending signals */
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226 /*-----------------------------------------------------------------------*/
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227
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228 /*
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229 * We handle the following signals:
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230 *
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231 * SIGKILL, SIGTERM, SIGQUIT, SIGHUP - These four translate to ExitProcess
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232 * executed by the remote process
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233 * SIGINT - The remote process is sent CTRL_BREAK_EVENT
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234 *
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|
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235 * The MSVC5.0 compiler feels free to re-order functions within a
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236 * compilation unit, so we have no way of finding out the size of the
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237 * following functions. Therefore these functions must not be larger than
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238 * FRAGMENT_CODE_SIZE.
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239 */
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240
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241 /*
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242 * Sending SIGKILL
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243 */
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244 typedef struct
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245 {
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246 void (WINAPI *adr_ExitProcess) (UINT);
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247 } sigkill_data;
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248
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249 static DWORD WINAPI
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250 sigkill_proc (sigkill_data* data)
|
|
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251 {
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252 (*data->adr_ExitProcess)(255);
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253 return 1;
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254 }
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255
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256 /*
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257 * Sending break or control c
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258 */
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259 typedef struct
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|
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260 {
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261 BOOL (WINAPI *adr_GenerateConsoleCtrlEvent) (DWORD, DWORD);
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|
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262 DWORD event;
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263 } sigint_data;
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264
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265 static DWORD WINAPI
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266 sigint_proc (sigint_data* data)
|
|
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267 {
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|
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268 return (*data->adr_GenerateConsoleCtrlEvent) (data->event, 0);
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|
|
269 }
|
|
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270
|
|
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271 /*
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|
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272 * Enabling signals
|
|
|
273 */
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274 typedef struct
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|
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275 {
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276 BOOL (WINAPI *adr_SetConsoleCtrlHandler) (LPVOID, BOOL);
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|
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277 } sig_enable_data;
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|
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278
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279 static DWORD WINAPI
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280 sig_enable_proc (sig_enable_data* data)
|
|
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281 {
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282 (*data->adr_SetConsoleCtrlHandler) (NULL, FALSE);
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283 return 1;
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284 }
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285
|
|
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286 /*
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287 * Send signal SIGNO to process H_PROCESS.
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288 * Return nonzero if successful.
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289 */
|
|
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290
|
|
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291 /* This code assigns a return value of GetProcAddress to function pointers
|
|
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292 of many different types. Instead of heavy obscure casts, we just disable
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293 warnings about assignments to different function pointer types. */
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294 #pragma warning (disable : 4113)
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295
|
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296 static int
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297 send_signal (HANDLE h_process, int signo)
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|
|
298 {
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|
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299 HMODULE h_kernel = GetModuleHandle ("kernel32");
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300 DWORD retval;
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|
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301
|
|
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302 assert (h_kernel != NULL);
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|
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303
|
|
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304 switch (signo)
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|
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305 {
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|
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306 case SIGKILL:
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|
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307 case SIGTERM:
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|
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308 case SIGQUIT:
|
|
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309 case SIGHUP:
|
|
|
310 {
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|
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311 sigkill_data d;
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|
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312 d.adr_ExitProcess = GetProcAddress (h_kernel, "ExitProcess");
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|
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313 assert (d.adr_ExitProcess);
|
|
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314 retval = run_in_other_process (h_process,
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|
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315 (LPTHREAD_START_ROUTINE)sigkill_proc,
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|
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316 &d, sizeof (d));
|
|
|
317 break;
|
|
|
318 }
|
|
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319 case SIGINT:
|
|
|
320 {
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|
|
321 sigint_data d;
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|
|
322 d.adr_GenerateConsoleCtrlEvent =
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323 GetProcAddress (h_kernel, "GenerateConsoleCtrlEvent");
|
|
|
324 assert (d.adr_GenerateConsoleCtrlEvent);
|
|
|
325 d.event = CTRL_C_EVENT;
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|
|
326 retval = run_in_other_process (h_process,
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|
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327 (LPTHREAD_START_ROUTINE)sigint_proc,
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|
|
328 &d, sizeof (d));
|
|
|
329 break;
|
|
|
330 }
|
|
|
331 default:
|
|
|
332 assert (0);
|
|
|
333 }
|
|
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334
|
|
|
335 return (int)retval > 0 ? 1 : 0;
|
|
|
336 }
|
|
|
337
|
|
|
338 /*
|
|
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339 * Enable CTRL_C_EVENT handling in a new child process
|
|
|
340 */
|
|
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341 static void
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|
|
342 enable_child_signals (HANDLE h_process)
|
|
|
343 {
|
|
|
344 HMODULE h_kernel = GetModuleHandle ("kernel32");
|
|
|
345 sig_enable_data d;
|
|
|
346
|
|
|
347 assert (h_kernel != NULL);
|
|
|
348 d.adr_SetConsoleCtrlHandler =
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|
|
349 GetProcAddress (h_kernel, "SetConsoleCtrlHandler");
|
|
|
350 assert (d.adr_SetConsoleCtrlHandler);
|
|
|
351 run_in_other_process (h_process, (LPTHREAD_START_ROUTINE)sig_enable_proc,
|
|
|
352 &d, sizeof (d));
|
|
|
353 }
|
|
|
354
|
|
|
355 #pragma warning (default : 4113)
|
|
|
356
|
|
|
357 /*
|
|
|
358 * Signal error if SIGNO is not supported
|
|
|
359 */
|
|
|
360 static void
|
|
|
361 validate_signal_number (int signo)
|
|
|
362 {
|
|
|
363 if (signo != SIGKILL && signo != SIGTERM
|
|
|
364 && signo != SIGQUIT && signo != SIGINT
|
|
|
365 && signo != SIGHUP)
|
|
|
366 signal_simple_error ("Signal number not supported", make_int (signo));
|
|
|
367 }
|
|
|
368
|
|
|
369 /*-----------------------------------------------------------------------*/
|
|
|
370 /* Process methods */
|
|
|
371 /*-----------------------------------------------------------------------*/
|
|
|
372
|
|
|
373 /*
|
|
|
374 * Allocate and initialize Lisp_Process->process_data
|
|
|
375 */
|
|
|
376
|
|
|
377 static void
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|
|
378 nt_alloc_process_data (struct Lisp_Process *p)
|
|
|
379 {
|
|
|
380 p->process_data = xnew_and_zero (struct nt_process_data);
|
|
|
381 }
|
|
|
382
|
|
|
383 static void
|
|
|
384 nt_finalize_process_data (struct Lisp_Process *p, int for_disksave)
|
|
|
385 {
|
|
|
386 assert (!for_disksave);
|
|
|
387 if (NT_DATA(p)->h_process)
|
|
|
388 CloseHandle (NT_DATA(p)->h_process);
|
|
|
389 }
|
|
|
390
|
|
|
391 /*
|
|
|
392 * Initialize XEmacs process implementation once
|
|
|
393 */
|
|
|
394 static void
|
|
|
395 nt_init_process (void)
|
|
|
396 {
|
|
|
397 /* Initialize winsock */
|
|
|
398 WSADATA wsa_data;
|
|
|
399 /* Request Winsock v1.1 Note the order: (minor=1, major=1) */
|
|
|
400 WSAStartup (MAKEWORD (1,1), &wsa_data);
|
|
|
401 }
|
|
|
402
|
|
|
403 /*
|
|
|
404 * Fork off a subprocess. P is a pointer to newly created subprocess
|
|
|
405 * object. If this function signals, the caller is responsible for
|
|
|
406 * deleting (and finalizing) the process object.
|
|
|
407 *
|
|
|
408 * The method must return PID of the new process, a (positive??? ####) number
|
|
|
409 * which fits into Lisp_Int. No return value indicates an error, the method
|
|
|
410 * must signal an error instead.
|
|
|
411 */
|
|
|
412
|
|
|
413 static void
|
|
|
414 signal_cannot_launch (Lisp_Object image_file, DWORD err)
|
|
|
415 {
|
|
|
416 mswindows_set_errno (err);
|
|
|
417 signal_simple_error_2 ("Error starting", image_file, lisp_strerror (errno));
|
|
|
418 }
|
|
|
419
|
|
|
420 static int
|
|
|
421 nt_create_process (struct Lisp_Process *p,
|
|
|
422 Lisp_Object *argv, int nargv,
|
|
|
423 Lisp_Object program, Lisp_Object cur_dir)
|
|
|
424 {
|
|
430
|
425 HANDLE hmyshove, hmyslurp, hprocin, hprocout, hprocerr;
|
|
428
|
426 LPTSTR command_line;
|
|
|
427 BOOL do_io, windowed;
|
|
|
428 char *proc_env;
|
|
|
429
|
|
|
430 /* Find out whether the application is windowed or not */
|
|
|
431 {
|
|
|
432 /* SHGetFileInfo tends to return ERROR_FILE_NOT_FOUND on most
|
|
|
433 errors. This leads to bogus error message. */
|
|
|
434 DWORD image_type;
|
|
|
435 char *p = strrchr ((char *)XSTRING_DATA (program), '.');
|
|
|
436 if (p != NULL &&
|
|
|
437 (stricmp (p, ".exe") == 0 ||
|
|
|
438 stricmp (p, ".com") == 0 ||
|
|
|
439 stricmp (p, ".bat") == 0 ||
|
|
|
440 stricmp (p, ".cmd") == 0))
|
|
|
441 {
|
|
|
442 image_type = SHGetFileInfo ((char *)XSTRING_DATA (program), 0,NULL,
|
|
|
443 0, SHGFI_EXETYPE);
|
|
|
444 }
|
|
|
445 else
|
|
|
446 {
|
|
|
447 char progname[MAX_PATH];
|
|
|
448 sprintf (progname, "%s.exe", (char *)XSTRING_DATA (program));
|
|
|
449 image_type = SHGetFileInfo (progname, 0, NULL, 0, SHGFI_EXETYPE);
|
|
|
450 }
|
|
|
451 if (image_type == 0)
|
|
|
452 signal_cannot_launch (program, (GetLastError () == ERROR_FILE_NOT_FOUND
|
|
|
453 ? ERROR_BAD_FORMAT : GetLastError ()));
|
|
|
454 windowed = HIWORD (image_type) != 0;
|
|
|
455 }
|
|
|
456
|
|
|
457 /* Decide whether to do I/O on process handles, or just mark the
|
|
|
458 process exited immediately upon successful launching. We do I/O if the
|
|
|
459 process is a console one, or if it is windowed but windowed_process_io
|
|
|
460 is non-zero */
|
|
|
461 do_io = !windowed || windowed_process_io ;
|
|
|
462
|
|
|
463 if (do_io)
|
|
|
464 {
|
|
|
465 /* Create two unidirectional named pipes */
|
|
|
466 HANDLE htmp;
|
|
|
467 SECURITY_ATTRIBUTES sa;
|
|
|
468
|
|
|
469 sa.nLength = sizeof(sa);
|
|
|
470 sa.bInheritHandle = TRUE;
|
|
|
471 sa.lpSecurityDescriptor = NULL;
|
|
|
472
|
|
|
473 CreatePipe (&hprocin, &hmyshove, &sa, 0);
|
|
|
474 CreatePipe (&hmyslurp, &hprocout, &sa, 0);
|
|
|
475
|
|
430
|
476 /* Duplicate the stdout handle for use as stderr */
|
|
|
477 DuplicateHandle(GetCurrentProcess(), hprocout, GetCurrentProcess(), &hprocerr,
|
|
|
478 0, TRUE, DUPLICATE_SAME_ACCESS);
|
|
|
479
|
|
428
|
480 /* Stupid Win32 allows to create a pipe with *both* ends either
|
|
|
481 inheritable or not. We need process ends inheritable, and local
|
|
|
482 ends not inheritable. */
|
|
|
483 DuplicateHandle (GetCurrentProcess(), hmyshove, GetCurrentProcess(), &htmp,
|
|
|
484 0, FALSE, DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS);
|
|
|
485 hmyshove = htmp;
|
|
|
486 DuplicateHandle (GetCurrentProcess(), hmyslurp, GetCurrentProcess(), &htmp,
|
|
|
487 0, FALSE, DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS);
|
|
|
488 hmyslurp = htmp;
|
|
|
489 }
|
|
|
490
|
|
|
491 /* Convert an argv vector into Win32 style command line by a call to
|
|
|
492 lisp function `nt-quote-process-args' which see (in winnt.el)*/
|
|
|
493 {
|
|
|
494 int i;
|
|
|
495 Lisp_Object args_or_ret = Qnil;
|
|
|
496 struct gcpro gcpro1;
|
|
|
497
|
|
|
498 GCPRO1 (args_or_ret);
|
|
|
499
|
|
|
500 for (i = 0; i < nargv; ++i)
|
|
|
501 args_or_ret = Fcons (*argv++, args_or_ret);
|
|
|
502 args_or_ret = Fnreverse (args_or_ret);
|
|
|
503 args_or_ret = Fcons (program, args_or_ret);
|
|
|
504
|
|
|
505 args_or_ret = call1 (Qnt_quote_process_args, args_or_ret);
|
|
|
506
|
|
|
507 if (!STRINGP (args_or_ret))
|
|
|
508 /* Luser wrote his/her own clever version */
|
|
|
509 error ("Bogus return value from `nt-quote-process-args'");
|
|
|
510
|
|
|
511 command_line = alloca_array (char, (XSTRING_LENGTH (program)
|
|
|
512 + XSTRING_LENGTH (args_or_ret) + 2));
|
|
|
513 strcpy (command_line, XSTRING_DATA (program));
|
|
|
514 strcat (command_line, " ");
|
|
|
515 strcat (command_line, XSTRING_DATA (args_or_ret));
|
|
|
516
|
|
|
517 UNGCPRO; /* args_or_ret */
|
|
|
518 }
|
|
|
519
|
|
|
520 /* Set `proc_env' to a nul-separated array of the strings in
|
|
|
521 Vprocess_environment terminated by 2 nuls. */
|
|
|
522
|
|
|
523 {
|
|
|
524 extern int compare_env (const char **strp1, const char **strp2);
|
|
|
525 char **env;
|
|
|
526 REGISTER Lisp_Object tem;
|
|
|
527 REGISTER char **new_env;
|
|
|
528 REGISTER int new_length = 0, i, new_space;
|
|
|
529 char *penv;
|
|
|
530
|
|
|
531 for (tem = Vprocess_environment;
|
|
|
532 (CONSP (tem)
|
|
|
533 && STRINGP (XCAR (tem)));
|
|
|
534 tem = XCDR (tem))
|
|
|
535 new_length++;
|
|
|
536
|
|
|
537 /* new_length + 1 to include terminating 0. */
|
|
|
538 env = new_env = alloca_array (char *, new_length + 1);
|
|
|
539
|
|
|
540 /* Copy the Vprocess_environment strings into new_env. */
|
|
|
541 for (tem = Vprocess_environment;
|
|
|
542 (CONSP (tem)
|
|
|
543 && STRINGP (XCAR (tem)));
|
|
|
544 tem = XCDR (tem))
|
|
|
545 {
|
|
|
546 char **ep = env;
|
|
|
547 char *string = (char *) XSTRING_DATA (XCAR (tem));
|
|
|
548 /* See if this string duplicates any string already in the env.
|
|
|
549 If so, don't put it in.
|
|
|
550 When an env var has multiple definitions,
|
|
|
551 we keep the definition that comes first in process-environment. */
|
|
|
552 for (; ep != new_env; ep++)
|
|
|
553 {
|
|
|
554 char *p = *ep, *q = string;
|
|
|
555 while (1)
|
|
|
556 {
|
|
|
557 if (*q == 0)
|
|
|
558 /* The string is malformed; might as well drop it. */
|
|
|
559 goto duplicate;
|
|
|
560 if (*q != *p)
|
|
|
561 break;
|
|
|
562 if (*q == '=')
|
|
|
563 goto duplicate;
|
|
|
564 p++, q++;
|
|
|
565 }
|
|
|
566 }
|
|
|
567 *new_env++ = string;
|
|
|
568 duplicate: ;
|
|
|
569 }
|
|
|
570 *new_env = 0;
|
|
|
571
|
|
|
572 /* Sort the environment variables */
|
|
|
573 new_length = new_env - env;
|
|
|
574 qsort (env, new_length, sizeof (char *), compare_env);
|
|
|
575
|
|
|
576 /* Work out how much space to allocate */
|
|
|
577 new_space = 0;
|
|
|
578 for (i = 0; i < new_length; i++)
|
|
|
579 {
|
|
|
580 new_space += strlen(env[i]) + 1;
|
|
|
581 }
|
|
|
582 new_space++;
|
|
|
583
|
|
|
584 /* Allocate space and copy variables into it */
|
|
|
585 penv = proc_env = alloca(new_space);
|
|
|
586 for (i = 0; i < new_length; i++)
|
|
|
587 {
|
|
|
588 strcpy(penv, env[i]);
|
|
|
589 penv += strlen(env[i]) + 1;
|
|
|
590 }
|
|
|
591 *penv = 0;
|
|
|
592 }
|
|
|
593
|
|
|
594 /* Create process */
|
|
|
595 {
|
|
|
596 STARTUPINFO si;
|
|
|
597 PROCESS_INFORMATION pi;
|
|
|
598 DWORD err;
|
|
|
599
|
|
|
600 xzero (si);
|
|
|
601 si.dwFlags = STARTF_USESHOWWINDOW;
|
|
|
602 si.wShowWindow = windowed ? SW_SHOWNORMAL : SW_HIDE;
|
|
|
603 if (do_io)
|
|
|
604 {
|
|
|
605 si.hStdInput = hprocin;
|
|
|
606 si.hStdOutput = hprocout;
|
|
430
|
607 si.hStdError = hprocerr;
|
|
428
|
608 si.dwFlags |= STARTF_USESTDHANDLES;
|
|
|
609 }
|
|
|
610
|
|
|
611 err = (CreateProcess (NULL, command_line, NULL, NULL, TRUE,
|
|
|
612 CREATE_NEW_CONSOLE | CREATE_NEW_PROCESS_GROUP
|
|
|
613 | CREATE_SUSPENDED,
|
|
|
614 proc_env, (char *) XSTRING_DATA (cur_dir), &si, &pi)
|
|
|
615 ? 0 : GetLastError ());
|
|
|
616
|
|
|
617 if (do_io)
|
|
|
618 {
|
|
|
619 /* These just have been inherited; we do not need a copy */
|
|
|
620 CloseHandle (hprocin);
|
|
|
621 CloseHandle (hprocout);
|
|
430
|
622 CloseHandle (hprocerr);
|
|
428
|
623 }
|
|
|
624
|
|
|
625 /* Handle process creation failure */
|
|
|
626 if (err)
|
|
|
627 {
|
|
|
628 if (do_io)
|
|
|
629 {
|
|
|
630 CloseHandle (hmyshove);
|
|
|
631 CloseHandle (hmyslurp);
|
|
|
632 }
|
|
|
633 signal_cannot_launch (program, GetLastError ());
|
|
|
634 }
|
|
|
635
|
|
|
636 /* The process started successfully */
|
|
|
637 if (do_io)
|
|
|
638 {
|
|
|
639 NT_DATA(p)->h_process = pi.hProcess;
|
|
|
640 init_process_io_handles (p, (void*)hmyslurp, (void*)hmyshove, 0);
|
|
|
641 }
|
|
|
642 else
|
|
|
643 {
|
|
|
644 /* Indicate as if the process has exited immediately. */
|
|
|
645 p->status_symbol = Qexit;
|
|
|
646 CloseHandle (pi.hProcess);
|
|
|
647 }
|
|
|
648
|
|
|
649 ResumeThread (pi.hThread);
|
|
|
650 CloseHandle (pi.hThread);
|
|
|
651
|
|
430
|
652 /* Remember to enable child signals later if this is not a windowed
|
|
|
653 app. Can't do it right now because that screws up the MKS Toolkit
|
|
|
654 shell. */
|
|
|
655 if (!windowed)
|
|
|
656 {
|
|
|
657 NT_DATA(p)->need_enable_child_signals = 10;
|
|
|
658 kick_status_notify ();
|
|
|
659 }
|
|
|
660
|
|
432
|
661 return ((int)pi.dwProcessId);
|
|
428
|
662 }
|
|
|
663 }
|
|
|
664
|
|
|
665 /*
|
|
|
666 * This method is called to update status fields of the process
|
|
|
667 * structure. If the process has not existed, this method is expected
|
|
|
668 * to do nothing.
|
|
|
669 *
|
|
|
670 * The method is called only for real child processes.
|
|
|
671 */
|
|
|
672
|
|
|
673 static void
|
|
|
674 nt_update_status_if_terminated (struct Lisp_Process* p)
|
|
|
675 {
|
|
|
676 DWORD exit_code;
|
|
430
|
677
|
|
|
678 if (NT_DATA(p)->need_enable_child_signals > 1)
|
|
|
679 {
|
|
|
680 NT_DATA(p)->need_enable_child_signals -= 1;
|
|
|
681 kick_status_notify ();
|
|
|
682 }
|
|
|
683 else if (NT_DATA(p)->need_enable_child_signals == 1)
|
|
|
684 {
|
|
|
685 enable_child_signals(NT_DATA(p)->h_process);
|
|
|
686 NT_DATA(p)->need_enable_child_signals = 0;
|
|
|
687 }
|
|
|
688
|
|
428
|
689 if (GetExitCodeProcess (NT_DATA(p)->h_process, &exit_code)
|
|
|
690 && exit_code != STILL_ACTIVE)
|
|
|
691 {
|
|
|
692 p->tick++;
|
|
|
693 p->core_dumped = 0;
|
|
|
694 /* The exit code can be a code returned by process, or an
|
|
|
695 NTSTATUS value. We cannot accurately handle the latter since
|
|
|
696 it is a full 32 bit integer */
|
|
|
697 if (exit_code & 0xC0000000)
|
|
|
698 {
|
|
|
699 p->status_symbol = Qsignal;
|
|
|
700 p->exit_code = exit_code & 0x1FFFFFFF;
|
|
|
701 }
|
|
|
702 else
|
|
|
703 {
|
|
|
704 p->status_symbol = Qexit;
|
|
|
705 p->exit_code = exit_code;
|
|
|
706 }
|
|
|
707 }
|
|
|
708 }
|
|
|
709
|
|
|
710 /*
|
|
|
711 * Stuff the entire contents of LSTREAM to the process output pipe
|
|
|
712 */
|
|
|
713
|
|
|
714 /* #### If only this function could be somehow merged with
|
|
|
715 unix_send_process... */
|
|
|
716
|
|
|
717 static void
|
|
|
718 nt_send_process (Lisp_Object proc, struct lstream* lstream)
|
|
|
719 {
|
|
432
|
720 volatile Lisp_Object vol_proc = proc;
|
|
|
721 struct Lisp_Process *volatile p = XPROCESS (proc);
|
|
428
|
722
|
|
|
723 /* use a reasonable-sized buffer (somewhere around the size of the
|
|
|
724 stream buffer) so as to avoid inundating the stream with blocked
|
|
|
725 data. */
|
|
|
726 Bufbyte chunkbuf[128];
|
|
|
727 Bytecount chunklen;
|
|
|
728
|
|
|
729 while (1)
|
|
|
730 {
|
|
|
731 ssize_t writeret;
|
|
|
732
|
|
|
733 chunklen = Lstream_read (lstream, chunkbuf, 128);
|
|
|
734 if (chunklen <= 0)
|
|
|
735 break; /* perhaps should abort() if < 0?
|
|
|
736 This should never happen. */
|
|
|
737
|
|
|
738 /* Lstream_write() will never successfully write less than the
|
|
|
739 amount sent in. In the worst case, it just buffers the
|
|
|
740 unwritten data. */
|
|
|
741 writeret = Lstream_write (XLSTREAM (DATA_OUTSTREAM(p)), chunkbuf,
|
|
|
742 chunklen);
|
|
|
743 Lstream_flush (XLSTREAM (DATA_OUTSTREAM(p)));
|
|
|
744 if (writeret < 0)
|
|
|
745 {
|
|
|
746 p->status_symbol = Qexit;
|
|
|
747 p->exit_code = ERROR_BROKEN_PIPE;
|
|
|
748 p->core_dumped = 0;
|
|
|
749 p->tick++;
|
|
|
750 process_tick++;
|
|
432
|
751 deactivate_process (*((Lisp_Object *) (&vol_proc)));
|
|
428
|
752 error ("Broken pipe error sending to process %s; closed it",
|
|
|
753 XSTRING_DATA (p->name));
|
|
|
754 }
|
|
|
755
|
|
|
756 {
|
|
|
757 int wait_ms = 25;
|
|
|
758 while (Lstream_was_blocked_p (XLSTREAM (p->pipe_outstream)))
|
|
|
759 {
|
|
|
760 /* Buffer is full. Wait, accepting input; that may allow
|
|
|
761 the program to finish doing output and read more. */
|
|
|
762 Faccept_process_output (Qnil, Qzero, make_int (wait_ms));
|
|
|
763 Lstream_flush (XLSTREAM (p->pipe_outstream));
|
|
|
764 wait_ms = min (1000, 2 * wait_ms);
|
|
|
765 }
|
|
|
766 }
|
|
|
767 }
|
|
|
768 }
|
|
|
769
|
|
|
770 /*
|
|
|
771 * Send a signal number SIGNO to PROCESS.
|
|
|
772 * CURRENT_GROUP means send to the process group that currently owns
|
|
|
773 * the terminal being used to communicate with PROCESS.
|
|
|
774 * This is used for various commands in shell mode.
|
|
|
775 * If NOMSG is zero, insert signal-announcements into process's buffers
|
|
|
776 * right away.
|
|
|
777 *
|
|
|
778 * If we can, we try to signal PROCESS by sending control characters
|
|
|
779 * down the pty. This allows us to signal inferiors who have changed
|
|
|
780 * their uid, for which killpg would return an EPERM error.
|
|
|
781 *
|
|
|
782 * The method signals an error if the given SIGNO is not valid
|
|
|
783 */
|
|
|
784
|
|
|
785 static void
|
|
|
786 nt_kill_child_process (Lisp_Object proc, int signo,
|
|
|
787 int current_group, int nomsg)
|
|
|
788 {
|
|
|
789 struct Lisp_Process *p = XPROCESS (proc);
|
|
|
790
|
|
430
|
791 /* Enable child signals if necessary. This may lose the first
|
|
|
792 but it's better than nothing. */
|
|
|
793 if (NT_DATA(p)->need_enable_child_signals > 0)
|
|
|
794 {
|
|
|
795 enable_child_signals(NT_DATA(p)->h_process);
|
|
|
796 NT_DATA(p)->need_enable_child_signals = 0;
|
|
|
797 }
|
|
|
798
|
|
428
|
799 /* Signal error if SIGNO cannot be sent */
|
|
|
800 validate_signal_number (signo);
|
|
|
801
|
|
|
802 /* Send signal */
|
|
|
803 if (!send_signal (NT_DATA(p)->h_process, signo))
|
|
|
804 error ("Cannot send signal to process");
|
|
|
805 }
|
|
|
806
|
|
|
807 /*
|
|
|
808 * Kill any process in the system given its PID.
|
|
|
809 *
|
|
|
810 * Returns zero if a signal successfully sent, or
|
|
|
811 * negative number upon failure
|
|
|
812 */
|
|
|
813 static int
|
|
|
814 nt_kill_process_by_pid (int pid, int signo)
|
|
|
815 {
|
|
|
816 HANDLE h_process;
|
|
|
817 int send_result;
|
|
|
818
|
|
|
819 /* Signal error if SIGNO cannot be sent */
|
|
|
820 validate_signal_number (signo);
|
|
|
821
|
|
|
822 /* Try to open the process with required privileges */
|
|
|
823 h_process = OpenProcess (PROCESS_CREATE_THREAD
|
|
|
824 | PROCESS_QUERY_INFORMATION
|
|
|
825 | PROCESS_VM_OPERATION
|
|
|
826 | PROCESS_VM_WRITE,
|
|
|
827 FALSE, pid);
|
|
|
828 if (h_process == NULL)
|
|
|
829 return -1;
|
|
|
830
|
|
|
831 send_result = send_signal (h_process, signo);
|
|
|
832
|
|
|
833 CloseHandle (h_process);
|
|
|
834
|
|
|
835 return send_result ? 0 : -1;
|
|
|
836 }
|
|
|
837
|
|
|
838 /*-----------------------------------------------------------------------*/
|
|
|
839 /* Sockets connections */
|
|
|
840 /*-----------------------------------------------------------------------*/
|
|
|
841 #ifdef HAVE_SOCKETS
|
|
|
842
|
|
|
843 /* #### Hey MS, how long Winsock 2 for '95 will be in beta? */
|
|
|
844
|
|
|
845 #define SOCK_TIMER_ID 666
|
|
|
846 #define XM_SOCKREPLY (WM_USER + 666)
|
|
|
847
|
|
|
848 static int
|
|
|
849 get_internet_address (Lisp_Object host, struct sockaddr_in *address,
|
|
|
850 Error_behavior errb)
|
|
|
851 {
|
|
|
852 char buf [MAXGETHOSTSTRUCT];
|
|
|
853 HWND hwnd;
|
|
|
854 HANDLE hasync;
|
|
|
855 int success = 0;
|
|
|
856
|
|
|
857 address->sin_family = AF_INET;
|
|
|
858
|
|
|
859 /* First check if HOST is already a numeric address */
|
|
|
860 {
|
|
|
861 unsigned long inaddr = inet_addr (XSTRING_DATA (host));
|
|
|
862 if (inaddr != INADDR_NONE)
|
|
|
863 {
|
|
|
864 address->sin_addr.s_addr = inaddr;
|
|
|
865 return 1;
|
|
|
866 }
|
|
|
867 }
|
|
|
868
|
|
|
869 /* Create a window which will receive completion messages */
|
|
|
870 hwnd = CreateWindow ("STATIC", NULL, WS_OVERLAPPED, 0, 0, 1, 1,
|
|
|
871 NULL, NULL, NULL, NULL);
|
|
|
872 assert (hwnd);
|
|
|
873
|
|
|
874 /* Post name resolution request */
|
|
|
875 hasync = WSAAsyncGetHostByName (hwnd, XM_SOCKREPLY, XSTRING_DATA (host),
|
|
|
876 buf, sizeof (buf));
|
|
|
877 if (hasync == NULL)
|
|
|
878 goto done;
|
|
|
879
|
|
|
880 /* Set a timer to poll for quit every 250 ms */
|
|
|
881 SetTimer (hwnd, SOCK_TIMER_ID, 250, NULL);
|
|
|
882
|
|
|
883 while (1)
|
|
|
884 {
|
|
|
885 MSG msg;
|
|
|
886 GetMessage (&msg, hwnd, 0, 0);
|
|
|
887 if (msg.message == XM_SOCKREPLY)
|
|
|
888 {
|
|
|
889 /* Ok, got an answer */
|
|
|
890 if (WSAGETASYNCERROR(msg.lParam) == NO_ERROR)
|
|
|
891 success = 1;
|
|
432
|
892 else
|
|
|
893 {
|
|
|
894 warn_when_safe(Qstream, Qwarning,
|
|
|
895 "cannot get IP address for host \"%s\"",
|
|
|
896 XSTRING_DATA (host));
|
|
|
897 }
|
|
428
|
898 goto done;
|
|
|
899 }
|
|
|
900 else if (msg.message == WM_TIMER && msg.wParam == SOCK_TIMER_ID)
|
|
|
901 {
|
|
|
902 if (QUITP)
|
|
|
903 {
|
|
|
904 WSACancelAsyncRequest (hasync);
|
|
|
905 KillTimer (hwnd, SOCK_TIMER_ID);
|
|
|
906 DestroyWindow (hwnd);
|
|
|
907 REALLY_QUIT;
|
|
|
908 }
|
|
|
909 }
|
|
|
910 DispatchMessage (&msg);
|
|
|
911 }
|
|
|
912
|
|
|
913 done:
|
|
|
914 KillTimer (hwnd, SOCK_TIMER_ID);
|
|
|
915 DestroyWindow (hwnd);
|
|
|
916 if (success)
|
|
|
917 {
|
|
|
918 /* BUF starts with struct hostent */
|
|
|
919 struct hostent* he = (struct hostent*) buf;
|
|
|
920 address->sin_addr.s_addr = *(unsigned long*)he->h_addr_list[0];
|
|
|
921 }
|
|
|
922 return success;
|
|
|
923 }
|
|
|
924
|
|
|
925 static Lisp_Object
|
|
|
926 nt_canonicalize_host_name (Lisp_Object host)
|
|
|
927 {
|
|
|
928 struct sockaddr_in address;
|
|
|
929
|
|
|
930 if (!get_internet_address (host, &address, ERROR_ME_NOT))
|
|
|
931 return host;
|
|
|
932
|
|
|
933 if (address.sin_family == AF_INET)
|
|
|
934 return build_string (inet_ntoa (address.sin_addr));
|
|
|
935 else
|
|
|
936 return host;
|
|
|
937 }
|
|
|
938
|
|
|
939 /* open a TCP network connection to a given HOST/SERVICE. Treated
|
|
|
940 exactly like a normal process when reading and writing. Only
|
|
|
941 differences are in status display and process deletion. A network
|
|
|
942 connection has no PID; you cannot signal it. All you can do is
|
|
|
943 deactivate and close it via delete-process */
|
|
|
944
|
|
|
945 static void
|
|
|
946 nt_open_network_stream (Lisp_Object name, Lisp_Object host, Lisp_Object service,
|
|
|
947 Lisp_Object protocol, void** vinfd, void** voutfd)
|
|
|
948 {
|
|
|
949 struct sockaddr_in address;
|
|
|
950 SOCKET s;
|
|
|
951 int port;
|
|
|
952 int retval;
|
|
|
953
|
|
|
954 CHECK_STRING (host);
|
|
|
955
|
|
|
956 if (!EQ (protocol, Qtcp))
|
|
|
957 error ("Unsupported protocol \"%s\"",
|
|
|
958 string_data (symbol_name (XSYMBOL (protocol))));
|
|
|
959
|
|
|
960 if (INTP (service))
|
|
|
961 port = htons ((unsigned short) XINT (service));
|
|
|
962 else
|
|
|
963 {
|
|
|
964 struct servent *svc_info;
|
|
|
965 CHECK_STRING (service);
|
|
|
966 svc_info = getservbyname ((char *) XSTRING_DATA (service), "tcp");
|
|
|
967 if (svc_info == 0)
|
|
|
968 error ("Unknown service \"%s\"", XSTRING_DATA (service));
|
|
|
969 port = svc_info->s_port;
|
|
|
970 }
|
|
|
971
|
|
|
972 get_internet_address (host, &address, ERROR_ME);
|
|
|
973 address.sin_port = port;
|
|
|
974
|
|
|
975 s = socket (address.sin_family, SOCK_STREAM, 0);
|
|
|
976 if (s < 0)
|
|
|
977 report_file_error ("error creating socket", list1 (name));
|
|
|
978
|
|
|
979 /* We don't want to be blocked on connect */
|
|
|
980 {
|
|
|
981 unsigned long nonblock = 1;
|
|
|
982 ioctlsocket (s, FIONBIO, &nonblock);
|
|
|
983 }
|
|
|
984
|
|
|
985 retval = connect (s, (struct sockaddr *) &address, sizeof (address));
|
|
|
986 if (retval != NO_ERROR && WSAGetLastError() != WSAEWOULDBLOCK)
|
|
|
987 goto connect_failed;
|
|
|
988 /* Wait while connection is established */
|
|
|
989 while (1)
|
|
|
990 {
|
|
|
991 fd_set fdset;
|
|
|
992 struct timeval tv;
|
|
|
993 int nsel;
|
|
|
994
|
|
|
995 if (QUITP)
|
|
|
996 {
|
|
|
997 closesocket (s);
|
|
|
998 REALLY_QUIT;
|
|
|
999 }
|
|
|
1000
|
|
|
1001 /* Poll for quit every 250 ms */
|
|
|
1002 tv.tv_sec = 0;
|
|
|
1003 tv.tv_usec = 250 * 1000;
|
|
|
1004
|
|
|
1005 FD_ZERO (&fdset);
|
|
|
1006 FD_SET (s, &fdset);
|
|
|
1007 nsel = select (0, NULL, &fdset, &fdset, &tv);
|
|
|
1008
|
|
|
1009 if (nsel > 0)
|
|
|
1010 {
|
|
|
1011 /* Check: was connection successful or not? */
|
|
|
1012 tv.tv_usec = 0;
|
|
|
1013 nsel = select (0, NULL, NULL, &fdset, &tv);
|
|
|
1014 if (nsel > 0)
|
|
|
1015 goto connect_failed;
|
|
|
1016 else
|
|
|
1017 break;
|
|
|
1018 }
|
|
|
1019 }
|
|
|
1020
|
|
|
1021 /* We are connected at this point */
|
|
|
1022 *vinfd = (void*)s;
|
|
|
1023 DuplicateHandle (GetCurrentProcess(), (HANDLE)s,
|
|
|
1024 GetCurrentProcess(), (LPHANDLE)voutfd,
|
|
|
1025 0, FALSE, DUPLICATE_SAME_ACCESS);
|
|
|
1026 return;
|
|
|
1027
|
|
|
1028 connect_failed:
|
|
|
1029 closesocket (s);
|
|
432
|
1030 warn_when_safe(Qstream, Qwarning,
|
|
|
1031 "failure to open network stream to host \"%s\" for service \"%s\"",
|
|
|
1032 XSTRING_DATA (host),
|
|
|
1033 XSTRING_DATA (service));
|
|
428
|
1034 report_file_error ("connection failed", list2 (host, name));
|
|
|
1035 }
|
|
|
1036
|
|
|
1037 #endif
|
|
|
1038
|
|
|
1039 /*-----------------------------------------------------------------------*/
|
|
|
1040 /* Initialization */
|
|
|
1041 /*-----------------------------------------------------------------------*/
|
|
|
1042
|
|
|
1043 void
|
|
|
1044 process_type_create_nt (void)
|
|
|
1045 {
|
|
|
1046 PROCESS_HAS_METHOD (nt, alloc_process_data);
|
|
|
1047 PROCESS_HAS_METHOD (nt, finalize_process_data);
|
|
|
1048 PROCESS_HAS_METHOD (nt, init_process);
|
|
|
1049 PROCESS_HAS_METHOD (nt, create_process);
|
|
|
1050 PROCESS_HAS_METHOD (nt, update_status_if_terminated);
|
|
|
1051 PROCESS_HAS_METHOD (nt, send_process);
|
|
|
1052 PROCESS_HAS_METHOD (nt, kill_child_process);
|
|
|
1053 PROCESS_HAS_METHOD (nt, kill_process_by_pid);
|
|
|
1054 #ifdef HAVE_SOCKETS
|
|
|
1055 PROCESS_HAS_METHOD (nt, canonicalize_host_name);
|
|
|
1056 PROCESS_HAS_METHOD (nt, open_network_stream);
|
|
|
1057 #ifdef HAVE_MULTICAST
|
|
|
1058 #error I won't do this until '95 has winsock2
|
|
|
1059 PROCESS_HAS_METHOD (nt, open_multicast_group);
|
|
|
1060 #endif
|
|
|
1061 #endif
|
|
|
1062 }
|
|
|
1063
|
|
|
1064 void
|
|
|
1065 syms_of_process_nt (void)
|
|
|
1066 {
|
|
|
1067 defsymbol (&Qnt_quote_process_args, "nt-quote-process-args");
|
|
|
1068 }
|
|
|
1069
|
|
|
1070 void
|
|
|
1071 vars_of_process_nt (void)
|
|
|
1072 {
|
|
|
1073 }
|
