|
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 #ifndef __MINGW32__
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36 #include <shellapi.h>
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37 #else
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38 #include <errno.h>
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39 #endif
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40 #include <signal.h>
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41 #ifdef HAVE_SOCKETS
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42 #include <winsock.h>
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43 #endif
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44
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45 /* Arbitrary size limit for code fragments passed to run_in_other_process */
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46 #define FRAGMENT_CODE_SIZE 32
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47
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48 /* Bound by winnt.el */
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49 Lisp_Object Qnt_quote_process_args;
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50
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51 /* Implementation-specific data. Pointed to by Lisp_Process->process_data */
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52 struct nt_process_data
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53 {
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54 HANDLE h_process;
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430
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55 int need_enable_child_signals;
|
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428
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56 };
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57
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58 #define NT_DATA(p) ((struct nt_process_data*)((p)->process_data))
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59
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60 /*-----------------------------------------------------------------------*/
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61 /* Process helpers */
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62 /*-----------------------------------------------------------------------*/
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63
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64 /* This one breaks process abstraction. Prototype is in console-msw.h,
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65 used by select_process method in event-msw.c */
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66 HANDLE
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|
440
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67 get_nt_process_handle (Lisp_Process *p)
|
|
428
|
68 {
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69 return (NT_DATA (p)->h_process);
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70 }
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71
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72 /*-----------------------------------------------------------------------*/
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73 /* Running remote threads. See Microsoft Systems Journal 1994 Number 5 */
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74 /* Jeffrey Richter, Load Your 32-bit DLL into Another Process's Address..*/
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75 /*-----------------------------------------------------------------------*/
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76
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77 typedef struct
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78 {
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79 HANDLE h_process;
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80 HANDLE h_thread;
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81 LPVOID address;
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82 } process_memory;
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83
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84 /*
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85 * Allocate SIZE bytes in H_PROCESS address space. Fill in PMC used
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86 * further by other routines. Return nonzero if successful.
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87 *
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88 * The memory in other process is allocated by creating a suspended
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89 * thread. Initial stack of that thread is used as the memory
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90 * block. The thread entry point is the routine ExitThread in
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91 * kernel32.dll, so the allocated memory is freed just by resuming the
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92 * thread, which immediately terminates after that.
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93 */
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94
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95 static int
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96 alloc_process_memory (HANDLE h_process, size_t size,
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97 process_memory* pmc)
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98 {
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99 LPTHREAD_START_ROUTINE adr_ExitThread =
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100 (LPTHREAD_START_ROUTINE)
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101 GetProcAddress (GetModuleHandle ("kernel32"), "ExitThread");
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102 DWORD dw_unused;
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103 CONTEXT context;
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104 MEMORY_BASIC_INFORMATION mbi;
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105
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106 pmc->h_process = h_process;
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107 pmc->h_thread = CreateRemoteThread (h_process, NULL, size,
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108 adr_ExitThread, NULL,
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109 CREATE_SUSPENDED, &dw_unused);
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110 if (pmc->h_thread == NULL)
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111 return 0;
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112
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113 /* Get context, for thread's stack pointer */
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114 context.ContextFlags = CONTEXT_CONTROL;
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115 if (!GetThreadContext (pmc->h_thread, &context))
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116 goto failure;
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117
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118 /* Determine base address of the committed range */
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119 if (sizeof(mbi) != VirtualQueryEx (h_process,
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120 #if defined (_X86_)
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121 (LPDWORD)context.Esp - 1,
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122 #elif defined (_ALPHA_)
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123 (LPDWORD)context.IntSp - 1,
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124 #else
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125 #error Unknown processor architecture
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126 #endif
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127 &mbi, sizeof(mbi)))
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128 goto failure;
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129
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130 /* Change the page protection of the allocated memory to executable,
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131 read, and write. */
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132 if (!VirtualProtectEx (h_process, mbi.BaseAddress, size,
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133 PAGE_EXECUTE_READWRITE, &dw_unused))
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134 goto failure;
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135
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136 pmc->address = mbi.BaseAddress;
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137 return 1;
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138
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139 failure:
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140 ResumeThread (pmc->h_thread);
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141 pmc->address = 0;
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142 return 0;
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143 }
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144
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145 static void
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146 free_process_memory (process_memory* pmc)
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147 {
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148 ResumeThread (pmc->h_thread);
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149 }
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150
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151 /*
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152 * Run ROUTINE in the context of process determined by H_PROCESS. The
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153 * routine is passed the address of DATA as parameter. The ROUTINE must
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154 * not be longer than ROUTINE_CODE_SIZE bytes. DATA_SIZE is the size of
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155 * DATA structure.
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156 *
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157 * Note that the code must be positionally independent, and compiled
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158 * without stack checks (they cause implicit calls into CRT so will
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159 * fail). DATA should not refer any data in calling process, as both
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160 * routine and its data are copied into remote process. Size of data
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161 * and code together should not exceed one page (4K on x86 systems).
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162 *
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163 * Return the value returned by ROUTINE, or (DWORD)-1 if call failed.
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164 */
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165 static DWORD
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166 run_in_other_process (HANDLE h_process,
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167 LPTHREAD_START_ROUTINE routine,
|
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168 LPVOID data, size_t data_size)
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169 {
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170 process_memory pm;
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171 CONST size_t code_size = FRAGMENT_CODE_SIZE;
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172 /* Need at most 3 extra bytes of memory, for data alignment */
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173 size_t total_size = code_size + data_size + 3;
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174 LPVOID remote_data;
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175 HANDLE h_thread;
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176 DWORD dw_unused;
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177
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178 /* Allocate memory */
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179 if (!alloc_process_memory (h_process, total_size, &pm))
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180 return (DWORD)-1;
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181
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182 /* Copy code */
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183 if (!WriteProcessMemory (h_process, pm.address, (LPVOID)routine,
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184 code_size, NULL))
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185 goto failure;
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186
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187 /* Copy data */
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188 if (data_size)
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189 {
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190 remote_data = (LPBYTE)pm.address + ((code_size + 4) & ~3);
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191 if (!WriteProcessMemory (h_process, remote_data, data, data_size, NULL))
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192 goto failure;
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193 }
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194 else
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195 remote_data = NULL;
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196
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197 /* Execute the remote copy of code, passing it remote data */
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198 h_thread = CreateRemoteThread (h_process, NULL, 0,
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199 (LPTHREAD_START_ROUTINE) pm.address,
|
|
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200 remote_data, 0, &dw_unused);
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201 if (h_thread == NULL)
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202 goto failure;
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203
|
|
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204 /* Wait till thread finishes */
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205 WaitForSingleObject (h_thread, INFINITE);
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206
|
|
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207 /* Free remote memory */
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208 free_process_memory (&pm);
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209
|
|
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210 /* Return thread's exit code */
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|
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211 {
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212 DWORD exit_code;
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213 GetExitCodeThread (h_thread, &exit_code);
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|
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214 CloseHandle (h_thread);
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215 return exit_code;
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216 }
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217
|
|
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218 failure:
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|
|
219 free_process_memory (&pm);
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|
220 return (DWORD)-1;
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|
|
221 }
|
|
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222
|
|
|
223 /*-----------------------------------------------------------------------*/
|
|
|
224 /* Sending signals */
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|
|
225 /*-----------------------------------------------------------------------*/
|
|
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226
|
|
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227 /*
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|
|
228 * We handle the following signals:
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|
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229 *
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|
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230 * SIGKILL, SIGTERM, SIGQUIT, SIGHUP - These four translate to ExitProcess
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|
|
231 * executed by the remote process
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|
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232 * SIGINT - The remote process is sent CTRL_BREAK_EVENT
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|
|
233 *
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|
|
234 * The MSVC5.0 compiler feels free to re-order functions within a
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235 * compilation unit, so we have no way of finding out the size of the
|
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236 * following functions. Therefore these functions must not be larger than
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237 * FRAGMENT_CODE_SIZE.
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|
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238 */
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239
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|
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240 /*
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241 * Sending SIGKILL
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|
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242 */
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243 typedef struct
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|
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244 {
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245 void (WINAPI *adr_ExitProcess) (UINT);
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|
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246 } sigkill_data;
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|
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247
|
|
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248 static DWORD WINAPI
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249 sigkill_proc (sigkill_data* data)
|
|
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250 {
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|
|
251 (*data->adr_ExitProcess)(255);
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|
|
252 return 1;
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|
|
253 }
|
|
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254
|
|
|
255 /*
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|
|
256 * Sending break or control c
|
|
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257 */
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|
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258 typedef struct
|
|
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259 {
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|
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260 BOOL (WINAPI *adr_GenerateConsoleCtrlEvent) (DWORD, DWORD);
|
|
|
261 DWORD event;
|
|
|
262 } sigint_data;
|
|
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263
|
|
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264 static DWORD WINAPI
|
|
|
265 sigint_proc (sigint_data* data)
|
|
|
266 {
|
|
|
267 return (*data->adr_GenerateConsoleCtrlEvent) (data->event, 0);
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|
|
268 }
|
|
|
269
|
|
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270 /*
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|
|
271 * Enabling signals
|
|
|
272 */
|
|
|
273 typedef struct
|
|
|
274 {
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|
|
275 BOOL (WINAPI *adr_SetConsoleCtrlHandler) (LPVOID, BOOL);
|
|
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276 } sig_enable_data;
|
|
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277
|
|
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278 static DWORD WINAPI
|
|
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279 sig_enable_proc (sig_enable_data* data)
|
|
|
280 {
|
|
|
281 (*data->adr_SetConsoleCtrlHandler) (NULL, FALSE);
|
|
|
282 return 1;
|
|
|
283 }
|
|
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284
|
|
|
285 /*
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|
|
286 * Send signal SIGNO to process H_PROCESS.
|
|
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287 * Return nonzero if successful.
|
|
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288 */
|
|
|
289
|
|
|
290 /* This code assigns a return value of GetProcAddress to function pointers
|
|
|
291 of many different types. Instead of heavy obscure casts, we just disable
|
|
|
292 warnings about assignments to different function pointer types. */
|
|
|
293 #pragma warning (disable : 4113)
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|
|
294
|
|
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295 static int
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|
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296 send_signal (HANDLE h_process, int signo)
|
|
|
297 {
|
|
|
298 HMODULE h_kernel = GetModuleHandle ("kernel32");
|
|
|
299 DWORD retval;
|
|
|
300
|
|
|
301 assert (h_kernel != NULL);
|
|
|
302
|
|
|
303 switch (signo)
|
|
|
304 {
|
|
|
305 case SIGKILL:
|
|
|
306 case SIGTERM:
|
|
|
307 case SIGQUIT:
|
|
|
308 case SIGHUP:
|
|
|
309 {
|
|
|
310 sigkill_data d;
|
|
|
311 d.adr_ExitProcess = GetProcAddress (h_kernel, "ExitProcess");
|
|
|
312 assert (d.adr_ExitProcess);
|
|
|
313 retval = run_in_other_process (h_process,
|
|
|
314 (LPTHREAD_START_ROUTINE)sigkill_proc,
|
|
|
315 &d, sizeof (d));
|
|
|
316 break;
|
|
|
317 }
|
|
|
318 case SIGINT:
|
|
|
319 {
|
|
|
320 sigint_data d;
|
|
|
321 d.adr_GenerateConsoleCtrlEvent =
|
|
|
322 GetProcAddress (h_kernel, "GenerateConsoleCtrlEvent");
|
|
|
323 assert (d.adr_GenerateConsoleCtrlEvent);
|
|
|
324 d.event = CTRL_C_EVENT;
|
|
|
325 retval = run_in_other_process (h_process,
|
|
|
326 (LPTHREAD_START_ROUTINE)sigint_proc,
|
|
|
327 &d, sizeof (d));
|
|
|
328 break;
|
|
|
329 }
|
|
|
330 default:
|
|
|
331 assert (0);
|
|
|
332 }
|
|
|
333
|
|
|
334 return (int)retval > 0 ? 1 : 0;
|
|
|
335 }
|
|
|
336
|
|
|
337 /*
|
|
|
338 * Enable CTRL_C_EVENT handling in a new child process
|
|
|
339 */
|
|
|
340 static void
|
|
|
341 enable_child_signals (HANDLE h_process)
|
|
|
342 {
|
|
|
343 HMODULE h_kernel = GetModuleHandle ("kernel32");
|
|
|
344 sig_enable_data d;
|
|
|
345
|
|
|
346 assert (h_kernel != NULL);
|
|
|
347 d.adr_SetConsoleCtrlHandler =
|
|
|
348 GetProcAddress (h_kernel, "SetConsoleCtrlHandler");
|
|
|
349 assert (d.adr_SetConsoleCtrlHandler);
|
|
|
350 run_in_other_process (h_process, (LPTHREAD_START_ROUTINE)sig_enable_proc,
|
|
|
351 &d, sizeof (d));
|
|
|
352 }
|
|
|
353
|
|
|
354 #pragma warning (default : 4113)
|
|
|
355
|
|
|
356 /*
|
|
|
357 * Signal error if SIGNO is not supported
|
|
|
358 */
|
|
|
359 static void
|
|
|
360 validate_signal_number (int signo)
|
|
|
361 {
|
|
|
362 if (signo != SIGKILL && signo != SIGTERM
|
|
|
363 && signo != SIGQUIT && signo != SIGINT
|
|
|
364 && signo != SIGHUP)
|
|
|
365 signal_simple_error ("Signal number not supported", make_int (signo));
|
|
|
366 }
|
|
|
367
|
|
|
368 /*-----------------------------------------------------------------------*/
|
|
|
369 /* Process methods */
|
|
|
370 /*-----------------------------------------------------------------------*/
|
|
|
371
|
|
|
372 /*
|
|
|
373 * Allocate and initialize Lisp_Process->process_data
|
|
|
374 */
|
|
|
375
|
|
|
376 static void
|
|
440
|
377 nt_alloc_process_data (Lisp_Process *p)
|
|
428
|
378 {
|
|
|
379 p->process_data = xnew_and_zero (struct nt_process_data);
|
|
|
380 }
|
|
|
381
|
|
|
382 static void
|
|
440
|
383 nt_finalize_process_data (Lisp_Process *p, int for_disksave)
|
|
428
|
384 {
|
|
|
385 assert (!for_disksave);
|
|
|
386 if (NT_DATA(p)->h_process)
|
|
|
387 CloseHandle (NT_DATA(p)->h_process);
|
|
|
388 }
|
|
|
389
|
|
|
390 /*
|
|
|
391 * Initialize XEmacs process implementation once
|
|
|
392 */
|
|
|
393 static void
|
|
|
394 nt_init_process (void)
|
|
|
395 {
|
|
|
396 /* Initialize winsock */
|
|
|
397 WSADATA wsa_data;
|
|
|
398 /* Request Winsock v1.1 Note the order: (minor=1, major=1) */
|
|
|
399 WSAStartup (MAKEWORD (1,1), &wsa_data);
|
|
|
400 }
|
|
|
401
|
|
|
402 /*
|
|
|
403 * Fork off a subprocess. P is a pointer to newly created subprocess
|
|
|
404 * object. If this function signals, the caller is responsible for
|
|
|
405 * deleting (and finalizing) the process object.
|
|
|
406 *
|
|
|
407 * The method must return PID of the new process, a (positive??? ####) number
|
|
|
408 * which fits into Lisp_Int. No return value indicates an error, the method
|
|
|
409 * must signal an error instead.
|
|
|
410 */
|
|
|
411
|
|
|
412 static void
|
|
|
413 signal_cannot_launch (Lisp_Object image_file, DWORD err)
|
|
|
414 {
|
|
|
415 mswindows_set_errno (err);
|
|
|
416 signal_simple_error_2 ("Error starting", image_file, lisp_strerror (errno));
|
|
|
417 }
|
|
|
418
|
|
|
419 static int
|
|
440
|
420 nt_create_process (Lisp_Process *p,
|
|
428
|
421 Lisp_Object *argv, int nargv,
|
|
|
422 Lisp_Object program, Lisp_Object cur_dir)
|
|
|
423 {
|
|
430
|
424 HANDLE hmyshove, hmyslurp, hprocin, hprocout, hprocerr;
|
|
428
|
425 LPTSTR command_line;
|
|
|
426 BOOL do_io, windowed;
|
|
|
427 char *proc_env;
|
|
|
428
|
|
|
429 /* Find out whether the application is windowed or not */
|
|
|
430 {
|
|
|
431 /* SHGetFileInfo tends to return ERROR_FILE_NOT_FOUND on most
|
|
|
432 errors. This leads to bogus error message. */
|
|
|
433 DWORD image_type;
|
|
|
434 char *p = strrchr ((char *)XSTRING_DATA (program), '.');
|
|
|
435 if (p != NULL &&
|
|
|
436 (stricmp (p, ".exe") == 0 ||
|
|
|
437 stricmp (p, ".com") == 0 ||
|
|
|
438 stricmp (p, ".bat") == 0 ||
|
|
|
439 stricmp (p, ".cmd") == 0))
|
|
|
440 {
|
|
|
441 image_type = SHGetFileInfo ((char *)XSTRING_DATA (program), 0,NULL,
|
|
|
442 0, SHGFI_EXETYPE);
|
|
|
443 }
|
|
|
444 else
|
|
|
445 {
|
|
|
446 char progname[MAX_PATH];
|
|
|
447 sprintf (progname, "%s.exe", (char *)XSTRING_DATA (program));
|
|
|
448 image_type = SHGetFileInfo (progname, 0, NULL, 0, SHGFI_EXETYPE);
|
|
|
449 }
|
|
|
450 if (image_type == 0)
|
|
|
451 signal_cannot_launch (program, (GetLastError () == ERROR_FILE_NOT_FOUND
|
|
|
452 ? ERROR_BAD_FORMAT : GetLastError ()));
|
|
|
453 windowed = HIWORD (image_type) != 0;
|
|
|
454 }
|
|
|
455
|
|
|
456 /* Decide whether to do I/O on process handles, or just mark the
|
|
|
457 process exited immediately upon successful launching. We do I/O if the
|
|
|
458 process is a console one, or if it is windowed but windowed_process_io
|
|
|
459 is non-zero */
|
|
|
460 do_io = !windowed || windowed_process_io ;
|
|
|
461
|
|
|
462 if (do_io)
|
|
|
463 {
|
|
|
464 /* Create two unidirectional named pipes */
|
|
|
465 HANDLE htmp;
|
|
|
466 SECURITY_ATTRIBUTES sa;
|
|
|
467
|
|
|
468 sa.nLength = sizeof(sa);
|
|
|
469 sa.bInheritHandle = TRUE;
|
|
|
470 sa.lpSecurityDescriptor = NULL;
|
|
|
471
|
|
|
472 CreatePipe (&hprocin, &hmyshove, &sa, 0);
|
|
|
473 CreatePipe (&hmyslurp, &hprocout, &sa, 0);
|
|
|
474
|
|
430
|
475 /* Duplicate the stdout handle for use as stderr */
|
|
|
476 DuplicateHandle(GetCurrentProcess(), hprocout, GetCurrentProcess(), &hprocerr,
|
|
|
477 0, TRUE, DUPLICATE_SAME_ACCESS);
|
|
|
478
|
|
428
|
479 /* Stupid Win32 allows to create a pipe with *both* ends either
|
|
|
480 inheritable or not. We need process ends inheritable, and local
|
|
|
481 ends not inheritable. */
|
|
|
482 DuplicateHandle (GetCurrentProcess(), hmyshove, GetCurrentProcess(), &htmp,
|
|
|
483 0, FALSE, DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS);
|
|
|
484 hmyshove = htmp;
|
|
|
485 DuplicateHandle (GetCurrentProcess(), hmyslurp, GetCurrentProcess(), &htmp,
|
|
|
486 0, FALSE, DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS);
|
|
|
487 hmyslurp = htmp;
|
|
|
488 }
|
|
|
489
|
|
|
490 /* Convert an argv vector into Win32 style command line by a call to
|
|
|
491 lisp function `nt-quote-process-args' which see (in winnt.el)*/
|
|
|
492 {
|
|
|
493 int i;
|
|
|
494 Lisp_Object args_or_ret = Qnil;
|
|
|
495 struct gcpro gcpro1;
|
|
|
496
|
|
|
497 GCPRO1 (args_or_ret);
|
|
|
498
|
|
|
499 for (i = 0; i < nargv; ++i)
|
|
|
500 args_or_ret = Fcons (*argv++, args_or_ret);
|
|
|
501 args_or_ret = Fnreverse (args_or_ret);
|
|
|
502 args_or_ret = Fcons (program, args_or_ret);
|
|
|
503
|
|
|
504 args_or_ret = call1 (Qnt_quote_process_args, args_or_ret);
|
|
|
505
|
|
|
506 if (!STRINGP (args_or_ret))
|
|
|
507 /* Luser wrote his/her own clever version */
|
|
|
508 error ("Bogus return value from `nt-quote-process-args'");
|
|
|
509
|
|
|
510 command_line = alloca_array (char, (XSTRING_LENGTH (program)
|
|
|
511 + XSTRING_LENGTH (args_or_ret) + 2));
|
|
|
512 strcpy (command_line, XSTRING_DATA (program));
|
|
|
513 strcat (command_line, " ");
|
|
|
514 strcat (command_line, XSTRING_DATA (args_or_ret));
|
|
|
515
|
|
|
516 UNGCPRO; /* args_or_ret */
|
|
|
517 }
|
|
|
518
|
|
|
519 /* Set `proc_env' to a nul-separated array of the strings in
|
|
|
520 Vprocess_environment terminated by 2 nuls. */
|
|
|
521
|
|
|
522 {
|
|
|
523 extern int compare_env (const char **strp1, const char **strp2);
|
|
|
524 char **env;
|
|
|
525 REGISTER Lisp_Object tem;
|
|
|
526 REGISTER char **new_env;
|
|
|
527 REGISTER int new_length = 0, i, new_space;
|
|
|
528 char *penv;
|
|
|
529
|
|
|
530 for (tem = Vprocess_environment;
|
|
|
531 (CONSP (tem)
|
|
|
532 && STRINGP (XCAR (tem)));
|
|
|
533 tem = XCDR (tem))
|
|
|
534 new_length++;
|
|
|
535
|
|
|
536 /* new_length + 1 to include terminating 0. */
|
|
|
537 env = new_env = alloca_array (char *, new_length + 1);
|
|
|
538
|
|
|
539 /* Copy the Vprocess_environment strings into new_env. */
|
|
|
540 for (tem = Vprocess_environment;
|
|
|
541 (CONSP (tem)
|
|
|
542 && STRINGP (XCAR (tem)));
|
|
|
543 tem = XCDR (tem))
|
|
|
544 {
|
|
|
545 char **ep = env;
|
|
|
546 char *string = (char *) XSTRING_DATA (XCAR (tem));
|
|
|
547 /* See if this string duplicates any string already in the env.
|
|
|
548 If so, don't put it in.
|
|
|
549 When an env var has multiple definitions,
|
|
|
550 we keep the definition that comes first in process-environment. */
|
|
|
551 for (; ep != new_env; ep++)
|
|
|
552 {
|
|
|
553 char *p = *ep, *q = string;
|
|
|
554 while (1)
|
|
|
555 {
|
|
|
556 if (*q == 0)
|
|
|
557 /* The string is malformed; might as well drop it. */
|
|
|
558 goto duplicate;
|
|
|
559 if (*q != *p)
|
|
|
560 break;
|
|
|
561 if (*q == '=')
|
|
|
562 goto duplicate;
|
|
|
563 p++, q++;
|
|
|
564 }
|
|
|
565 }
|
|
|
566 *new_env++ = string;
|
|
|
567 duplicate: ;
|
|
|
568 }
|
|
|
569 *new_env = 0;
|
|
|
570
|
|
|
571 /* Sort the environment variables */
|
|
|
572 new_length = new_env - env;
|
|
|
573 qsort (env, new_length, sizeof (char *), compare_env);
|
|
|
574
|
|
|
575 /* Work out how much space to allocate */
|
|
|
576 new_space = 0;
|
|
|
577 for (i = 0; i < new_length; i++)
|
|
|
578 {
|
|
|
579 new_space += strlen(env[i]) + 1;
|
|
|
580 }
|
|
|
581 new_space++;
|
|
|
582
|
|
|
583 /* Allocate space and copy variables into it */
|
|
|
584 penv = proc_env = alloca(new_space);
|
|
|
585 for (i = 0; i < new_length; i++)
|
|
|
586 {
|
|
|
587 strcpy(penv, env[i]);
|
|
|
588 penv += strlen(env[i]) + 1;
|
|
|
589 }
|
|
|
590 *penv = 0;
|
|
|
591 }
|
|
|
592
|
|
|
593 /* Create process */
|
|
|
594 {
|
|
|
595 STARTUPINFO si;
|
|
|
596 PROCESS_INFORMATION pi;
|
|
|
597 DWORD err;
|
|
|
598
|
|
|
599 xzero (si);
|
|
|
600 si.dwFlags = STARTF_USESHOWWINDOW;
|
|
|
601 si.wShowWindow = windowed ? SW_SHOWNORMAL : SW_HIDE;
|
|
|
602 if (do_io)
|
|
|
603 {
|
|
|
604 si.hStdInput = hprocin;
|
|
|
605 si.hStdOutput = hprocout;
|
|
430
|
606 si.hStdError = hprocerr;
|
|
428
|
607 si.dwFlags |= STARTF_USESTDHANDLES;
|
|
|
608 }
|
|
|
609
|
|
|
610 err = (CreateProcess (NULL, command_line, NULL, NULL, TRUE,
|
|
|
611 CREATE_NEW_CONSOLE | CREATE_NEW_PROCESS_GROUP
|
|
|
612 | CREATE_SUSPENDED,
|
|
|
613 proc_env, (char *) XSTRING_DATA (cur_dir), &si, &pi)
|
|
|
614 ? 0 : GetLastError ());
|
|
|
615
|
|
|
616 if (do_io)
|
|
|
617 {
|
|
|
618 /* These just have been inherited; we do not need a copy */
|
|
|
619 CloseHandle (hprocin);
|
|
|
620 CloseHandle (hprocout);
|
|
430
|
621 CloseHandle (hprocerr);
|
|
428
|
622 }
|
|
|
623
|
|
|
624 /* Handle process creation failure */
|
|
|
625 if (err)
|
|
|
626 {
|
|
|
627 if (do_io)
|
|
|
628 {
|
|
|
629 CloseHandle (hmyshove);
|
|
|
630 CloseHandle (hmyslurp);
|
|
|
631 }
|
|
|
632 signal_cannot_launch (program, GetLastError ());
|
|
|
633 }
|
|
|
634
|
|
|
635 /* The process started successfully */
|
|
|
636 if (do_io)
|
|
|
637 {
|
|
|
638 NT_DATA(p)->h_process = pi.hProcess;
|
|
|
639 init_process_io_handles (p, (void*)hmyslurp, (void*)hmyshove, 0);
|
|
|
640 }
|
|
|
641 else
|
|
|
642 {
|
|
|
643 /* Indicate as if the process has exited immediately. */
|
|
|
644 p->status_symbol = Qexit;
|
|
|
645 CloseHandle (pi.hProcess);
|
|
|
646 }
|
|
|
647
|
|
|
648 ResumeThread (pi.hThread);
|
|
|
649 CloseHandle (pi.hThread);
|
|
|
650
|
|
430
|
651 /* Remember to enable child signals later if this is not a windowed
|
|
|
652 app. Can't do it right now because that screws up the MKS Toolkit
|
|
|
653 shell. */
|
|
|
654 if (!windowed)
|
|
|
655 {
|
|
|
656 NT_DATA(p)->need_enable_child_signals = 10;
|
|
|
657 kick_status_notify ();
|
|
|
658 }
|
|
|
659
|
|
432
|
660 return ((int)pi.dwProcessId);
|
|
428
|
661 }
|
|
|
662 }
|
|
|
663
|
|
|
664 /*
|
|
|
665 * This method is called to update status fields of the process
|
|
|
666 * structure. If the process has not existed, this method is expected
|
|
|
667 * to do nothing.
|
|
|
668 *
|
|
|
669 * The method is called only for real child processes.
|
|
|
670 */
|
|
|
671
|
|
|
672 static void
|
|
440
|
673 nt_update_status_if_terminated (Lisp_Process* p)
|
|
428
|
674 {
|
|
|
675 DWORD exit_code;
|
|
430
|
676
|
|
|
677 if (NT_DATA(p)->need_enable_child_signals > 1)
|
|
|
678 {
|
|
|
679 NT_DATA(p)->need_enable_child_signals -= 1;
|
|
|
680 kick_status_notify ();
|
|
|
681 }
|
|
|
682 else if (NT_DATA(p)->need_enable_child_signals == 1)
|
|
|
683 {
|
|
|
684 enable_child_signals(NT_DATA(p)->h_process);
|
|
|
685 NT_DATA(p)->need_enable_child_signals = 0;
|
|
|
686 }
|
|
|
687
|
|
428
|
688 if (GetExitCodeProcess (NT_DATA(p)->h_process, &exit_code)
|
|
|
689 && exit_code != STILL_ACTIVE)
|
|
|
690 {
|
|
|
691 p->tick++;
|
|
|
692 p->core_dumped = 0;
|
|
|
693 /* The exit code can be a code returned by process, or an
|
|
|
694 NTSTATUS value. We cannot accurately handle the latter since
|
|
|
695 it is a full 32 bit integer */
|
|
|
696 if (exit_code & 0xC0000000)
|
|
|
697 {
|
|
|
698 p->status_symbol = Qsignal;
|
|
|
699 p->exit_code = exit_code & 0x1FFFFFFF;
|
|
|
700 }
|
|
|
701 else
|
|
|
702 {
|
|
|
703 p->status_symbol = Qexit;
|
|
|
704 p->exit_code = exit_code;
|
|
|
705 }
|
|
|
706 }
|
|
|
707 }
|
|
|
708
|
|
|
709 /*
|
|
|
710 * Stuff the entire contents of LSTREAM to the process output pipe
|
|
|
711 */
|
|
|
712
|
|
|
713 /* #### If only this function could be somehow merged with
|
|
|
714 unix_send_process... */
|
|
|
715
|
|
|
716 static void
|
|
|
717 nt_send_process (Lisp_Object proc, struct lstream* lstream)
|
|
|
718 {
|
|
432
|
719 volatile Lisp_Object vol_proc = proc;
|
|
440
|
720 Lisp_Process *volatile p = XPROCESS (proc);
|
|
428
|
721
|
|
|
722 /* use a reasonable-sized buffer (somewhere around the size of the
|
|
|
723 stream buffer) so as to avoid inundating the stream with blocked
|
|
|
724 data. */
|
|
|
725 Bufbyte chunkbuf[128];
|
|
|
726 Bytecount chunklen;
|
|
|
727
|
|
|
728 while (1)
|
|
|
729 {
|
|
|
730 ssize_t writeret;
|
|
|
731
|
|
|
732 chunklen = Lstream_read (lstream, chunkbuf, 128);
|
|
|
733 if (chunklen <= 0)
|
|
|
734 break; /* perhaps should abort() if < 0?
|
|
|
735 This should never happen. */
|
|
|
736
|
|
|
737 /* Lstream_write() will never successfully write less than the
|
|
|
738 amount sent in. In the worst case, it just buffers the
|
|
|
739 unwritten data. */
|
|
|
740 writeret = Lstream_write (XLSTREAM (DATA_OUTSTREAM(p)), chunkbuf,
|
|
|
741 chunklen);
|
|
|
742 Lstream_flush (XLSTREAM (DATA_OUTSTREAM(p)));
|
|
|
743 if (writeret < 0)
|
|
|
744 {
|
|
|
745 p->status_symbol = Qexit;
|
|
|
746 p->exit_code = ERROR_BROKEN_PIPE;
|
|
|
747 p->core_dumped = 0;
|
|
|
748 p->tick++;
|
|
|
749 process_tick++;
|
|
432
|
750 deactivate_process (*((Lisp_Object *) (&vol_proc)));
|
|
428
|
751 error ("Broken pipe error sending to process %s; closed it",
|
|
|
752 XSTRING_DATA (p->name));
|
|
|
753 }
|
|
|
754
|
|
|
755 {
|
|
|
756 int wait_ms = 25;
|
|
|
757 while (Lstream_was_blocked_p (XLSTREAM (p->pipe_outstream)))
|
|
|
758 {
|
|
|
759 /* Buffer is full. Wait, accepting input; that may allow
|
|
|
760 the program to finish doing output and read more. */
|
|
|
761 Faccept_process_output (Qnil, Qzero, make_int (wait_ms));
|
|
|
762 Lstream_flush (XLSTREAM (p->pipe_outstream));
|
|
|
763 wait_ms = min (1000, 2 * wait_ms);
|
|
|
764 }
|
|
|
765 }
|
|
|
766 }
|
|
|
767 }
|
|
|
768
|
|
|
769 /*
|
|
|
770 * Send a signal number SIGNO to PROCESS.
|
|
|
771 * CURRENT_GROUP means send to the process group that currently owns
|
|
|
772 * the terminal being used to communicate with PROCESS.
|
|
|
773 * This is used for various commands in shell mode.
|
|
|
774 * If NOMSG is zero, insert signal-announcements into process's buffers
|
|
|
775 * right away.
|
|
|
776 *
|
|
|
777 * If we can, we try to signal PROCESS by sending control characters
|
|
|
778 * down the pty. This allows us to signal inferiors who have changed
|
|
|
779 * their uid, for which killpg would return an EPERM error.
|
|
|
780 *
|
|
|
781 * The method signals an error if the given SIGNO is not valid
|
|
|
782 */
|
|
|
783
|
|
|
784 static void
|
|
|
785 nt_kill_child_process (Lisp_Object proc, int signo,
|
|
|
786 int current_group, int nomsg)
|
|
|
787 {
|
|
440
|
788 Lisp_Process *p = XPROCESS (proc);
|
|
428
|
789
|
|
430
|
790 /* Enable child signals if necessary. This may lose the first
|
|
|
791 but it's better than nothing. */
|
|
|
792 if (NT_DATA(p)->need_enable_child_signals > 0)
|
|
|
793 {
|
|
|
794 enable_child_signals(NT_DATA(p)->h_process);
|
|
|
795 NT_DATA(p)->need_enable_child_signals = 0;
|
|
|
796 }
|
|
|
797
|
|
428
|
798 /* Signal error if SIGNO cannot be sent */
|
|
|
799 validate_signal_number (signo);
|
|
|
800
|
|
|
801 /* Send signal */
|
|
|
802 if (!send_signal (NT_DATA(p)->h_process, signo))
|
|
|
803 error ("Cannot send signal to process");
|
|
|
804 }
|
|
|
805
|
|
|
806 /*
|
|
|
807 * Kill any process in the system given its PID.
|
|
|
808 *
|
|
|
809 * Returns zero if a signal successfully sent, or
|
|
|
810 * negative number upon failure
|
|
|
811 */
|
|
|
812 static int
|
|
|
813 nt_kill_process_by_pid (int pid, int signo)
|
|
|
814 {
|
|
|
815 HANDLE h_process;
|
|
|
816 int send_result;
|
|
|
817
|
|
|
818 /* Signal error if SIGNO cannot be sent */
|
|
|
819 validate_signal_number (signo);
|
|
|
820
|
|
|
821 /* Try to open the process with required privileges */
|
|
|
822 h_process = OpenProcess (PROCESS_CREATE_THREAD
|
|
|
823 | PROCESS_QUERY_INFORMATION
|
|
|
824 | PROCESS_VM_OPERATION
|
|
|
825 | PROCESS_VM_WRITE,
|
|
|
826 FALSE, pid);
|
|
|
827 if (h_process == NULL)
|
|
|
828 return -1;
|
|
|
829
|
|
|
830 send_result = send_signal (h_process, signo);
|
|
|
831
|
|
|
832 CloseHandle (h_process);
|
|
|
833
|
|
|
834 return send_result ? 0 : -1;
|
|
|
835 }
|
|
|
836
|
|
|
837 /*-----------------------------------------------------------------------*/
|
|
|
838 /* Sockets connections */
|
|
|
839 /*-----------------------------------------------------------------------*/
|
|
|
840 #ifdef HAVE_SOCKETS
|
|
|
841
|
|
|
842 /* #### Hey MS, how long Winsock 2 for '95 will be in beta? */
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|
|
843
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|
844 #define SOCK_TIMER_ID 666
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|
|
845 #define XM_SOCKREPLY (WM_USER + 666)
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|
|
846
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|
|
847 static int
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|
|
848 get_internet_address (Lisp_Object host, struct sockaddr_in *address,
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|
|
849 Error_behavior errb)
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|
850 {
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|
|
851 char buf [MAXGETHOSTSTRUCT];
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|
|
852 HWND hwnd;
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|
853 HANDLE hasync;
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|
854 int success = 0;
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|
855
|
|
|
856 address->sin_family = AF_INET;
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|
|
857
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|
858 /* First check if HOST is already a numeric address */
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|
859 {
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|
860 unsigned long inaddr = inet_addr (XSTRING_DATA (host));
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|
861 if (inaddr != INADDR_NONE)
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862 {
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|
863 address->sin_addr.s_addr = inaddr;
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|
|
864 return 1;
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|
|
865 }
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|
866 }
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|
|
867
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|
|
868 /* Create a window which will receive completion messages */
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|
|
869 hwnd = CreateWindow ("STATIC", NULL, WS_OVERLAPPED, 0, 0, 1, 1,
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|
|
870 NULL, NULL, NULL, NULL);
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|
|
871 assert (hwnd);
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|
|
872
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|
873 /* Post name resolution request */
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|
|
874 hasync = WSAAsyncGetHostByName (hwnd, XM_SOCKREPLY, XSTRING_DATA (host),
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|
|
875 buf, sizeof (buf));
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|
|
876 if (hasync == NULL)
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|
|
877 goto done;
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|
|
878
|
|
|
879 /* Set a timer to poll for quit every 250 ms */
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|
|
880 SetTimer (hwnd, SOCK_TIMER_ID, 250, NULL);
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|
|
881
|
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|
882 while (1)
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|
883 {
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|
|
884 MSG msg;
|
|
|
885 GetMessage (&msg, hwnd, 0, 0);
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|
886 if (msg.message == XM_SOCKREPLY)
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|
|
887 {
|
|
|
888 /* Ok, got an answer */
|
|
|
889 if (WSAGETASYNCERROR(msg.lParam) == NO_ERROR)
|
|
|
890 success = 1;
|
|
432
|
891 else
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|
|
892 {
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|
|
893 warn_when_safe(Qstream, Qwarning,
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|
|
894 "cannot get IP address for host \"%s\"",
|
|
|
895 XSTRING_DATA (host));
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|
|
896 }
|
|
428
|
897 goto done;
|
|
|
898 }
|
|
|
899 else if (msg.message == WM_TIMER && msg.wParam == SOCK_TIMER_ID)
|
|
|
900 {
|
|
|
901 if (QUITP)
|
|
|
902 {
|
|
|
903 WSACancelAsyncRequest (hasync);
|
|
|
904 KillTimer (hwnd, SOCK_TIMER_ID);
|
|
|
905 DestroyWindow (hwnd);
|
|
|
906 REALLY_QUIT;
|
|
|
907 }
|
|
|
908 }
|
|
|
909 DispatchMessage (&msg);
|
|
|
910 }
|
|
|
911
|
|
|
912 done:
|
|
|
913 KillTimer (hwnd, SOCK_TIMER_ID);
|
|
|
914 DestroyWindow (hwnd);
|
|
|
915 if (success)
|
|
|
916 {
|
|
|
917 /* BUF starts with struct hostent */
|
|
|
918 struct hostent* he = (struct hostent*) buf;
|
|
|
919 address->sin_addr.s_addr = *(unsigned long*)he->h_addr_list[0];
|
|
|
920 }
|
|
|
921 return success;
|
|
|
922 }
|
|
|
923
|
|
|
924 static Lisp_Object
|
|
|
925 nt_canonicalize_host_name (Lisp_Object host)
|
|
|
926 {
|
|
|
927 struct sockaddr_in address;
|
|
|
928
|
|
|
929 if (!get_internet_address (host, &address, ERROR_ME_NOT))
|
|
|
930 return host;
|
|
|
931
|
|
|
932 if (address.sin_family == AF_INET)
|
|
|
933 return build_string (inet_ntoa (address.sin_addr));
|
|
|
934 else
|
|
|
935 return host;
|
|
|
936 }
|
|
|
937
|
|
|
938 /* open a TCP network connection to a given HOST/SERVICE. Treated
|
|
|
939 exactly like a normal process when reading and writing. Only
|
|
|
940 differences are in status display and process deletion. A network
|
|
|
941 connection has no PID; you cannot signal it. All you can do is
|
|
|
942 deactivate and close it via delete-process */
|
|
|
943
|
|
|
944 static void
|
|
|
945 nt_open_network_stream (Lisp_Object name, Lisp_Object host, Lisp_Object service,
|
|
|
946 Lisp_Object protocol, void** vinfd, void** voutfd)
|
|
|
947 {
|
|
|
948 struct sockaddr_in address;
|
|
|
949 SOCKET s;
|
|
|
950 int port;
|
|
|
951 int retval;
|
|
|
952
|
|
|
953 CHECK_STRING (host);
|
|
|
954
|
|
|
955 if (!EQ (protocol, Qtcp))
|
|
|
956 error ("Unsupported protocol \"%s\"",
|
|
|
957 string_data (symbol_name (XSYMBOL (protocol))));
|
|
|
958
|
|
|
959 if (INTP (service))
|
|
|
960 port = htons ((unsigned short) XINT (service));
|
|
|
961 else
|
|
|
962 {
|
|
|
963 struct servent *svc_info;
|
|
|
964 CHECK_STRING (service);
|
|
|
965 svc_info = getservbyname ((char *) XSTRING_DATA (service), "tcp");
|
|
|
966 if (svc_info == 0)
|
|
|
967 error ("Unknown service \"%s\"", XSTRING_DATA (service));
|
|
|
968 port = svc_info->s_port;
|
|
|
969 }
|
|
|
970
|
|
|
971 get_internet_address (host, &address, ERROR_ME);
|
|
|
972 address.sin_port = port;
|
|
|
973
|
|
|
974 s = socket (address.sin_family, SOCK_STREAM, 0);
|
|
|
975 if (s < 0)
|
|
|
976 report_file_error ("error creating socket", list1 (name));
|
|
|
977
|
|
|
978 /* We don't want to be blocked on connect */
|
|
|
979 {
|
|
|
980 unsigned long nonblock = 1;
|
|
|
981 ioctlsocket (s, FIONBIO, &nonblock);
|
|
|
982 }
|
|
|
983
|
|
|
984 retval = connect (s, (struct sockaddr *) &address, sizeof (address));
|
|
|
985 if (retval != NO_ERROR && WSAGetLastError() != WSAEWOULDBLOCK)
|
|
|
986 goto connect_failed;
|
|
|
987 /* Wait while connection is established */
|
|
|
988 while (1)
|
|
|
989 {
|
|
|
990 fd_set fdset;
|
|
|
991 struct timeval tv;
|
|
|
992 int nsel;
|
|
|
993
|
|
|
994 if (QUITP)
|
|
|
995 {
|
|
|
996 closesocket (s);
|
|
|
997 REALLY_QUIT;
|
|
|
998 }
|
|
|
999
|
|
|
1000 /* Poll for quit every 250 ms */
|
|
|
1001 tv.tv_sec = 0;
|
|
|
1002 tv.tv_usec = 250 * 1000;
|
|
|
1003
|
|
|
1004 FD_ZERO (&fdset);
|
|
|
1005 FD_SET (s, &fdset);
|
|
|
1006 nsel = select (0, NULL, &fdset, &fdset, &tv);
|
|
|
1007
|
|
|
1008 if (nsel > 0)
|
|
|
1009 {
|
|
|
1010 /* Check: was connection successful or not? */
|
|
|
1011 tv.tv_usec = 0;
|
|
|
1012 nsel = select (0, NULL, NULL, &fdset, &tv);
|
|
|
1013 if (nsel > 0)
|
|
|
1014 goto connect_failed;
|
|
|
1015 else
|
|
|
1016 break;
|
|
|
1017 }
|
|
|
1018 }
|
|
|
1019
|
|
|
1020 /* We are connected at this point */
|
|
|
1021 *vinfd = (void*)s;
|
|
|
1022 DuplicateHandle (GetCurrentProcess(), (HANDLE)s,
|
|
|
1023 GetCurrentProcess(), (LPHANDLE)voutfd,
|
|
|
1024 0, FALSE, DUPLICATE_SAME_ACCESS);
|
|
|
1025 return;
|
|
|
1026
|
|
|
1027 connect_failed:
|
|
|
1028 closesocket (s);
|
|
436
|
1029 if (INTP (service)) {
|
|
|
1030 warn_when_safe(Qstream, Qwarning,
|
|
|
1031 "failure to open network stream to host \"%s\" for service \"%d\"",
|
|
|
1032 XSTRING_DATA (host),
|
|
|
1033 (unsigned short) XINT (service));
|
|
|
1034 }
|
|
|
1035 else {
|
|
|
1036 warn_when_safe(Qstream, Qwarning,
|
|
|
1037 "failure to open network stream to host \"%s\" for service \"%s\"",
|
|
|
1038 XSTRING_DATA (host),
|
|
|
1039 XSTRING_DATA (service));
|
|
|
1040 }
|
|
428
|
1041 report_file_error ("connection failed", list2 (host, name));
|
|
|
1042 }
|
|
|
1043
|
|
|
1044 #endif
|
|
|
1045
|
|
|
1046 /*-----------------------------------------------------------------------*/
|
|
|
1047 /* Initialization */
|
|
|
1048 /*-----------------------------------------------------------------------*/
|
|
|
1049
|
|
|
1050 void
|
|
|
1051 process_type_create_nt (void)
|
|
|
1052 {
|
|
|
1053 PROCESS_HAS_METHOD (nt, alloc_process_data);
|
|
|
1054 PROCESS_HAS_METHOD (nt, finalize_process_data);
|
|
|
1055 PROCESS_HAS_METHOD (nt, init_process);
|
|
|
1056 PROCESS_HAS_METHOD (nt, create_process);
|
|
|
1057 PROCESS_HAS_METHOD (nt, update_status_if_terminated);
|
|
|
1058 PROCESS_HAS_METHOD (nt, send_process);
|
|
|
1059 PROCESS_HAS_METHOD (nt, kill_child_process);
|
|
|
1060 PROCESS_HAS_METHOD (nt, kill_process_by_pid);
|
|
|
1061 #ifdef HAVE_SOCKETS
|
|
|
1062 PROCESS_HAS_METHOD (nt, canonicalize_host_name);
|
|
|
1063 PROCESS_HAS_METHOD (nt, open_network_stream);
|
|
|
1064 #ifdef HAVE_MULTICAST
|
|
|
1065 #error I won't do this until '95 has winsock2
|
|
|
1066 PROCESS_HAS_METHOD (nt, open_multicast_group);
|
|
|
1067 #endif
|
|
|
1068 #endif
|
|
|
1069 }
|
|
|
1070
|
|
|
1071 void
|
|
|
1072 syms_of_process_nt (void)
|
|
|
1073 {
|
|
|
1074 defsymbol (&Qnt_quote_process_args, "nt-quote-process-args");
|
|
|
1075 }
|
|
|
1076
|
|
|
1077 void
|
|
|
1078 vars_of_process_nt (void)
|
|
|
1079 {
|
|
|
1080 }
|
