|
428
|
1 /* Asynchronous subprocess implementation for Win32
|
|
|
2 Copyright (C) 1985, 1986, 1987, 1988, 1992, 1993, 1994, 1995
|
|
|
3 Free Software Foundation, Inc.
|
|
|
4 Copyright (C) 1995 Sun Microsystems, Inc.
|
|
442
|
5 Copyright (C) 1995, 1996, 2000 Ben Wing.
|
|
428
|
6
|
|
|
7 This file is part of XEmacs.
|
|
|
8
|
|
|
9 XEmacs is free software; you can redistribute it and/or modify it
|
|
|
10 under the terms of the GNU General Public License as published by the
|
|
|
11 Free Software Foundation; either version 2, or (at your option) any
|
|
|
12 later version.
|
|
|
13
|
|
|
14 XEmacs is distributed in the hope that it will be useful, but WITHOUT
|
|
|
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
|
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
|
17 for more details.
|
|
|
18
|
|
|
19 You should have received a copy of the GNU General Public License
|
|
|
20 along with XEmacs; see the file COPYING. If not, write to
|
|
|
21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
|
22 Boston, MA 02111-1307, USA. */
|
|
|
23
|
|
|
24 /* Written by Kirill M. Katsnelson <kkm@kis.ru>, April 1998 */
|
|
|
25
|
|
|
26 #include <config.h>
|
|
|
27 #include "lisp.h"
|
|
|
28
|
|
442
|
29 #include "buffer.h"
|
|
|
30 #include "console-msw.h"
|
|
428
|
31 #include "hash.h"
|
|
|
32 #include "lstream.h"
|
|
442
|
33 #include "nt.h"
|
|
428
|
34 #include "process.h"
|
|
|
35 #include "procimpl.h"
|
|
|
36 #include "sysdep.h"
|
|
|
37
|
|
|
38 #include <shellapi.h>
|
|
|
39 #include <errno.h>
|
|
|
40 #include <signal.h>
|
|
|
41 #ifdef HAVE_SOCKETS
|
|
|
42 #include <winsock.h>
|
|
|
43 #endif
|
|
|
44
|
|
442
|
45 /* Bound by win32-native.el */
|
|
|
46 Lisp_Object Qmswindows_construct_process_command_line;
|
|
|
47
|
|
428
|
48 /* Arbitrary size limit for code fragments passed to run_in_other_process */
|
|
|
49 #define FRAGMENT_CODE_SIZE 32
|
|
|
50
|
|
|
51 /* Implementation-specific data. Pointed to by Lisp_Process->process_data */
|
|
|
52 struct nt_process_data
|
|
|
53 {
|
|
|
54 HANDLE h_process;
|
|
442
|
55 DWORD dwProcessId;
|
|
|
56 HWND hwnd; /* console window */
|
|
428
|
57 };
|
|
|
58
|
|
442
|
59 /* Control whether create_child causes the process to inherit Emacs'
|
|
|
60 console window, or be given a new one of its own. The default is
|
|
|
61 nil, to allow multiple DOS programs to run on Win95. Having separate
|
|
|
62 consoles also allows Emacs to cleanly terminate process groups. */
|
|
|
63 Lisp_Object Vmswindows_start_process_share_console;
|
|
|
64
|
|
|
65 /* Control whether create_child cause the process to inherit Emacs'
|
|
|
66 error mode setting. The default is t, to minimize the possibility of
|
|
|
67 subprocesses blocking when accessing unmounted drives. */
|
|
|
68 Lisp_Object Vmswindows_start_process_inherit_error_mode;
|
|
|
69
|
|
428
|
70 #define NT_DATA(p) ((struct nt_process_data*)((p)->process_data))
|
|
|
71
|
|
|
72 /*-----------------------------------------------------------------------*/
|
|
|
73 /* Process helpers */
|
|
|
74 /*-----------------------------------------------------------------------*/
|
|
|
75
|
|
|
76 /* This one breaks process abstraction. Prototype is in console-msw.h,
|
|
|
77 used by select_process method in event-msw.c */
|
|
|
78 HANDLE
|
|
440
|
79 get_nt_process_handle (Lisp_Process *p)
|
|
428
|
80 {
|
|
|
81 return (NT_DATA (p)->h_process);
|
|
|
82 }
|
|
442
|
83
|
|
|
84 static struct Lisp_Process *
|
|
|
85 find_process_from_pid (DWORD pid)
|
|
|
86 {
|
|
|
87 Lisp_Object tail, proc;
|
|
|
88
|
|
|
89 for (tail = Vprocess_list; CONSP (tail); tail = XCDR (tail))
|
|
|
90 {
|
|
|
91 proc = XCAR (tail);
|
|
|
92 if (NT_DATA (XPROCESS (proc))->dwProcessId == pid)
|
|
|
93 return XPROCESS (proc);
|
|
|
94 }
|
|
|
95 return 0;
|
|
|
96 }
|
|
|
97
|
|
428
|
98
|
|
|
99 /*-----------------------------------------------------------------------*/
|
|
|
100 /* Running remote threads. See Microsoft Systems Journal 1994 Number 5 */
|
|
|
101 /* Jeffrey Richter, Load Your 32-bit DLL into Another Process's Address..*/
|
|
|
102 /*-----------------------------------------------------------------------*/
|
|
|
103
|
|
|
104 typedef struct
|
|
|
105 {
|
|
|
106 HANDLE h_process;
|
|
|
107 HANDLE h_thread;
|
|
|
108 LPVOID address;
|
|
|
109 } process_memory;
|
|
|
110
|
|
|
111 /*
|
|
|
112 * Allocate SIZE bytes in H_PROCESS address space. Fill in PMC used
|
|
|
113 * further by other routines. Return nonzero if successful.
|
|
|
114 *
|
|
|
115 * The memory in other process is allocated by creating a suspended
|
|
|
116 * thread. Initial stack of that thread is used as the memory
|
|
|
117 * block. The thread entry point is the routine ExitThread in
|
|
|
118 * kernel32.dll, so the allocated memory is freed just by resuming the
|
|
|
119 * thread, which immediately terminates after that.
|
|
|
120 */
|
|
|
121
|
|
|
122 static int
|
|
|
123 alloc_process_memory (HANDLE h_process, size_t size,
|
|
|
124 process_memory* pmc)
|
|
|
125 {
|
|
|
126 LPTHREAD_START_ROUTINE adr_ExitThread =
|
|
|
127 (LPTHREAD_START_ROUTINE)
|
|
|
128 GetProcAddress (GetModuleHandle ("kernel32"), "ExitThread");
|
|
|
129 DWORD dw_unused;
|
|
|
130 CONTEXT context;
|
|
|
131 MEMORY_BASIC_INFORMATION mbi;
|
|
|
132
|
|
|
133 pmc->h_process = h_process;
|
|
|
134 pmc->h_thread = CreateRemoteThread (h_process, NULL, size,
|
|
|
135 adr_ExitThread, NULL,
|
|
|
136 CREATE_SUSPENDED, &dw_unused);
|
|
|
137 if (pmc->h_thread == NULL)
|
|
|
138 return 0;
|
|
|
139
|
|
|
140 /* Get context, for thread's stack pointer */
|
|
|
141 context.ContextFlags = CONTEXT_CONTROL;
|
|
|
142 if (!GetThreadContext (pmc->h_thread, &context))
|
|
|
143 goto failure;
|
|
|
144
|
|
|
145 /* Determine base address of the committed range */
|
|
|
146 if (sizeof(mbi) != VirtualQueryEx (h_process,
|
|
|
147 #if defined (_X86_)
|
|
|
148 (LPDWORD)context.Esp - 1,
|
|
|
149 #elif defined (_ALPHA_)
|
|
|
150 (LPDWORD)context.IntSp - 1,
|
|
|
151 #else
|
|
|
152 #error Unknown processor architecture
|
|
|
153 #endif
|
|
|
154 &mbi, sizeof(mbi)))
|
|
|
155 goto failure;
|
|
|
156
|
|
|
157 /* Change the page protection of the allocated memory to executable,
|
|
|
158 read, and write. */
|
|
|
159 if (!VirtualProtectEx (h_process, mbi.BaseAddress, size,
|
|
|
160 PAGE_EXECUTE_READWRITE, &dw_unused))
|
|
|
161 goto failure;
|
|
|
162
|
|
|
163 pmc->address = mbi.BaseAddress;
|
|
|
164 return 1;
|
|
|
165
|
|
|
166 failure:
|
|
|
167 ResumeThread (pmc->h_thread);
|
|
|
168 pmc->address = 0;
|
|
|
169 return 0;
|
|
|
170 }
|
|
|
171
|
|
|
172 static void
|
|
|
173 free_process_memory (process_memory* pmc)
|
|
|
174 {
|
|
|
175 ResumeThread (pmc->h_thread);
|
|
|
176 }
|
|
|
177
|
|
|
178 /*
|
|
|
179 * Run ROUTINE in the context of process determined by H_PROCESS. The
|
|
|
180 * routine is passed the address of DATA as parameter. The ROUTINE must
|
|
|
181 * not be longer than ROUTINE_CODE_SIZE bytes. DATA_SIZE is the size of
|
|
|
182 * DATA structure.
|
|
|
183 *
|
|
|
184 * Note that the code must be positionally independent, and compiled
|
|
|
185 * without stack checks (they cause implicit calls into CRT so will
|
|
|
186 * fail). DATA should not refer any data in calling process, as both
|
|
|
187 * routine and its data are copied into remote process. Size of data
|
|
|
188 * and code together should not exceed one page (4K on x86 systems).
|
|
|
189 *
|
|
|
190 * Return the value returned by ROUTINE, or (DWORD)-1 if call failed.
|
|
|
191 */
|
|
|
192 static DWORD
|
|
|
193 run_in_other_process (HANDLE h_process,
|
|
|
194 LPTHREAD_START_ROUTINE routine,
|
|
|
195 LPVOID data, size_t data_size)
|
|
|
196 {
|
|
|
197 process_memory pm;
|
|
442
|
198 const size_t code_size = FRAGMENT_CODE_SIZE;
|
|
428
|
199 /* Need at most 3 extra bytes of memory, for data alignment */
|
|
|
200 size_t total_size = code_size + data_size + 3;
|
|
|
201 LPVOID remote_data;
|
|
|
202 HANDLE h_thread;
|
|
|
203 DWORD dw_unused;
|
|
|
204
|
|
|
205 /* Allocate memory */
|
|
|
206 if (!alloc_process_memory (h_process, total_size, &pm))
|
|
|
207 return (DWORD)-1;
|
|
|
208
|
|
|
209 /* Copy code */
|
|
|
210 if (!WriteProcessMemory (h_process, pm.address, (LPVOID)routine,
|
|
|
211 code_size, NULL))
|
|
|
212 goto failure;
|
|
|
213
|
|
|
214 /* Copy data */
|
|
|
215 if (data_size)
|
|
|
216 {
|
|
|
217 remote_data = (LPBYTE)pm.address + ((code_size + 4) & ~3);
|
|
|
218 if (!WriteProcessMemory (h_process, remote_data, data, data_size, NULL))
|
|
|
219 goto failure;
|
|
|
220 }
|
|
|
221 else
|
|
|
222 remote_data = NULL;
|
|
|
223
|
|
|
224 /* Execute the remote copy of code, passing it remote data */
|
|
|
225 h_thread = CreateRemoteThread (h_process, NULL, 0,
|
|
|
226 (LPTHREAD_START_ROUTINE) pm.address,
|
|
|
227 remote_data, 0, &dw_unused);
|
|
|
228 if (h_thread == NULL)
|
|
|
229 goto failure;
|
|
|
230
|
|
|
231 /* Wait till thread finishes */
|
|
|
232 WaitForSingleObject (h_thread, INFINITE);
|
|
|
233
|
|
|
234 /* Free remote memory */
|
|
|
235 free_process_memory (&pm);
|
|
|
236
|
|
|
237 /* Return thread's exit code */
|
|
|
238 {
|
|
|
239 DWORD exit_code;
|
|
|
240 GetExitCodeThread (h_thread, &exit_code);
|
|
|
241 CloseHandle (h_thread);
|
|
|
242 return exit_code;
|
|
|
243 }
|
|
|
244
|
|
|
245 failure:
|
|
|
246 free_process_memory (&pm);
|
|
|
247 return (DWORD)-1;
|
|
|
248 }
|
|
|
249
|
|
|
250 /*-----------------------------------------------------------------------*/
|
|
|
251 /* Sending signals */
|
|
|
252 /*-----------------------------------------------------------------------*/
|
|
|
253
|
|
442
|
254 /* ---------------------------- the NT way ------------------------------- */
|
|
|
255
|
|
428
|
256 /*
|
|
|
257 * We handle the following signals:
|
|
|
258 *
|
|
|
259 * SIGKILL, SIGTERM, SIGQUIT, SIGHUP - These four translate to ExitProcess
|
|
|
260 * executed by the remote process
|
|
|
261 * SIGINT - The remote process is sent CTRL_BREAK_EVENT
|
|
|
262 *
|
|
|
263 * The MSVC5.0 compiler feels free to re-order functions within a
|
|
|
264 * compilation unit, so we have no way of finding out the size of the
|
|
|
265 * following functions. Therefore these functions must not be larger than
|
|
|
266 * FRAGMENT_CODE_SIZE.
|
|
|
267 */
|
|
|
268
|
|
|
269 /*
|
|
|
270 * Sending SIGKILL
|
|
|
271 */
|
|
|
272 typedef struct
|
|
|
273 {
|
|
|
274 void (WINAPI *adr_ExitProcess) (UINT);
|
|
|
275 } sigkill_data;
|
|
|
276
|
|
|
277 static DWORD WINAPI
|
|
|
278 sigkill_proc (sigkill_data* data)
|
|
|
279 {
|
|
|
280 (*data->adr_ExitProcess)(255);
|
|
|
281 return 1;
|
|
|
282 }
|
|
|
283
|
|
|
284 /*
|
|
|
285 * Sending break or control c
|
|
|
286 */
|
|
|
287 typedef struct
|
|
|
288 {
|
|
|
289 BOOL (WINAPI *adr_GenerateConsoleCtrlEvent) (DWORD, DWORD);
|
|
|
290 DWORD event;
|
|
|
291 } sigint_data;
|
|
|
292
|
|
|
293 static DWORD WINAPI
|
|
|
294 sigint_proc (sigint_data* data)
|
|
|
295 {
|
|
|
296 return (*data->adr_GenerateConsoleCtrlEvent) (data->event, 0);
|
|
|
297 }
|
|
|
298
|
|
|
299 /*
|
|
|
300 * Enabling signals
|
|
|
301 */
|
|
|
302 typedef struct
|
|
|
303 {
|
|
|
304 BOOL (WINAPI *adr_SetConsoleCtrlHandler) (LPVOID, BOOL);
|
|
|
305 } sig_enable_data;
|
|
|
306
|
|
|
307 static DWORD WINAPI
|
|
|
308 sig_enable_proc (sig_enable_data* data)
|
|
|
309 {
|
|
|
310 (*data->adr_SetConsoleCtrlHandler) (NULL, FALSE);
|
|
|
311 return 1;
|
|
|
312 }
|
|
|
313
|
|
|
314 /*
|
|
|
315 * Send signal SIGNO to process H_PROCESS.
|
|
|
316 * Return nonzero if successful.
|
|
|
317 */
|
|
|
318
|
|
|
319 static int
|
|
442
|
320 send_signal_the_nt_way (struct nt_process_data *cp, int pid, int signo)
|
|
428
|
321 {
|
|
442
|
322 HANDLE h_process;
|
|
428
|
323 HMODULE h_kernel = GetModuleHandle ("kernel32");
|
|
442
|
324 int close_process = 0;
|
|
428
|
325 DWORD retval;
|
|
|
326
|
|
|
327 assert (h_kernel != NULL);
|
|
|
328
|
|
442
|
329 if (cp)
|
|
|
330 {
|
|
|
331 pid = cp->dwProcessId;
|
|
|
332 h_process = cp->h_process;
|
|
|
333 }
|
|
|
334 else
|
|
|
335 {
|
|
|
336 close_process = 1;
|
|
|
337 /* Try to open the process with required privileges */
|
|
|
338 h_process = OpenProcess (PROCESS_CREATE_THREAD
|
|
|
339 | PROCESS_QUERY_INFORMATION
|
|
|
340 | PROCESS_VM_OPERATION
|
|
|
341 | PROCESS_VM_WRITE,
|
|
|
342 FALSE, pid);
|
|
|
343 if (!h_process)
|
|
|
344 return 0;
|
|
|
345 }
|
|
|
346
|
|
428
|
347 switch (signo)
|
|
|
348 {
|
|
|
349 case SIGKILL:
|
|
|
350 case SIGTERM:
|
|
|
351 case SIGQUIT:
|
|
|
352 case SIGHUP:
|
|
|
353 {
|
|
|
354 sigkill_data d;
|
|
442
|
355
|
|
|
356 d.adr_ExitProcess =
|
|
|
357 (void (WINAPI *) (UINT)) GetProcAddress (h_kernel, "ExitProcess");
|
|
428
|
358 assert (d.adr_ExitProcess);
|
|
|
359 retval = run_in_other_process (h_process,
|
|
|
360 (LPTHREAD_START_ROUTINE)sigkill_proc,
|
|
|
361 &d, sizeof (d));
|
|
|
362 break;
|
|
|
363 }
|
|
|
364 case SIGINT:
|
|
|
365 {
|
|
|
366 sigint_data d;
|
|
|
367 d.adr_GenerateConsoleCtrlEvent =
|
|
442
|
368 (BOOL (WINAPI *) (DWORD, DWORD))
|
|
428
|
369 GetProcAddress (h_kernel, "GenerateConsoleCtrlEvent");
|
|
|
370 assert (d.adr_GenerateConsoleCtrlEvent);
|
|
|
371 d.event = CTRL_C_EVENT;
|
|
|
372 retval = run_in_other_process (h_process,
|
|
|
373 (LPTHREAD_START_ROUTINE)sigint_proc,
|
|
|
374 &d, sizeof (d));
|
|
|
375 break;
|
|
|
376 }
|
|
|
377 default:
|
|
|
378 assert (0);
|
|
|
379 }
|
|
|
380
|
|
442
|
381 if (close_process)
|
|
|
382 CloseHandle (h_process);
|
|
428
|
383 return (int)retval > 0 ? 1 : 0;
|
|
|
384 }
|
|
|
385
|
|
|
386 /*
|
|
|
387 * Enable CTRL_C_EVENT handling in a new child process
|
|
|
388 */
|
|
|
389 static void
|
|
|
390 enable_child_signals (HANDLE h_process)
|
|
|
391 {
|
|
|
392 HMODULE h_kernel = GetModuleHandle ("kernel32");
|
|
|
393 sig_enable_data d;
|
|
|
394
|
|
|
395 assert (h_kernel != NULL);
|
|
|
396 d.adr_SetConsoleCtrlHandler =
|
|
442
|
397 (BOOL (WINAPI *) (LPVOID, BOOL))
|
|
428
|
398 GetProcAddress (h_kernel, "SetConsoleCtrlHandler");
|
|
|
399 assert (d.adr_SetConsoleCtrlHandler);
|
|
|
400 run_in_other_process (h_process, (LPTHREAD_START_ROUTINE)sig_enable_proc,
|
|
|
401 &d, sizeof (d));
|
|
|
402 }
|
|
|
403
|
|
|
404 #pragma warning (default : 4113)
|
|
|
405
|
|
442
|
406 /* ---------------------------- the 95 way ------------------------------- */
|
|
|
407
|
|
|
408 static BOOL CALLBACK
|
|
|
409 find_child_console (HWND hwnd, long putada)
|
|
|
410 {
|
|
|
411 DWORD thread_id;
|
|
|
412 DWORD process_id;
|
|
|
413 struct nt_process_data *cp = (struct nt_process_data *) putada;
|
|
|
414
|
|
|
415 thread_id = GetWindowThreadProcessId (hwnd, &process_id);
|
|
|
416 if (process_id == cp->dwProcessId)
|
|
|
417 {
|
|
|
418 char window_class[32];
|
|
|
419
|
|
|
420 GetClassName (hwnd, window_class, sizeof (window_class));
|
|
|
421 if (strcmp (window_class,
|
|
|
422 mswindows_windows9x_p ()
|
|
|
423 ? "tty"
|
|
|
424 : "ConsoleWindowClass") == 0)
|
|
|
425 {
|
|
|
426 cp->hwnd = hwnd;
|
|
|
427 return FALSE;
|
|
|
428 }
|
|
|
429 }
|
|
|
430 /* keep looking */
|
|
|
431 return TRUE;
|
|
|
432 }
|
|
|
433
|
|
|
434 static int
|
|
|
435 send_signal_the_95_way (struct nt_process_data *cp, int pid, int signo)
|
|
|
436 {
|
|
|
437 HANDLE h_process;
|
|
|
438 int close_process = 0;
|
|
|
439 int rc = 1;
|
|
|
440
|
|
|
441 if (cp)
|
|
|
442 {
|
|
|
443 pid = cp->dwProcessId;
|
|
|
444 h_process = cp->h_process;
|
|
|
445
|
|
|
446 /* Try to locate console window for process. */
|
|
|
447 EnumWindows (find_child_console, (LPARAM) cp);
|
|
|
448 }
|
|
|
449 else
|
|
|
450 {
|
|
|
451 close_process = 1;
|
|
|
452 /* Try to open the process with required privileges */
|
|
|
453 h_process = OpenProcess (PROCESS_TERMINATE, FALSE, pid);
|
|
|
454 if (!h_process)
|
|
|
455 return 0;
|
|
|
456 }
|
|
|
457
|
|
|
458 if (signo == SIGINT)
|
|
|
459 {
|
|
|
460 if (NILP (Vmswindows_start_process_share_console) && cp && cp->hwnd)
|
|
|
461 {
|
|
|
462 BYTE control_scan_code = (BYTE) MapVirtualKey (VK_CONTROL, 0);
|
|
|
463 BYTE vk_break_code = VK_CANCEL;
|
|
|
464 BYTE break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0);
|
|
|
465 HWND foreground_window;
|
|
|
466
|
|
|
467 if (break_scan_code == 0)
|
|
|
468 {
|
|
|
469 /* Fake Ctrl-C if we can't manage Ctrl-Break. */
|
|
|
470 vk_break_code = 'C';
|
|
|
471 break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0);
|
|
|
472 }
|
|
|
473
|
|
|
474 foreground_window = GetForegroundWindow ();
|
|
|
475 if (foreground_window)
|
|
|
476 {
|
|
|
477 /* NT 5.0, and apparently also Windows 98, will not allow
|
|
|
478 a Window to be set to foreground directly without the
|
|
|
479 user's involvement. The workaround is to attach
|
|
|
480 ourselves to the thread that owns the foreground
|
|
|
481 window, since that is the only thread that can set the
|
|
|
482 foreground window. */
|
|
|
483 DWORD foreground_thread, child_thread;
|
|
|
484 foreground_thread =
|
|
|
485 GetWindowThreadProcessId (foreground_window, NULL);
|
|
|
486 if (foreground_thread == GetCurrentThreadId ()
|
|
|
487 || !AttachThreadInput (GetCurrentThreadId (),
|
|
|
488 foreground_thread, TRUE))
|
|
|
489 foreground_thread = 0;
|
|
|
490
|
|
|
491 child_thread = GetWindowThreadProcessId (cp->hwnd, NULL);
|
|
|
492 if (child_thread == GetCurrentThreadId ()
|
|
|
493 || !AttachThreadInput (GetCurrentThreadId (),
|
|
|
494 child_thread, TRUE))
|
|
|
495 child_thread = 0;
|
|
|
496
|
|
|
497 /* Set the foreground window to the child. */
|
|
|
498 if (SetForegroundWindow (cp->hwnd))
|
|
|
499 {
|
|
|
500 /* Generate keystrokes as if user had typed Ctrl-Break or
|
|
|
501 Ctrl-C. */
|
|
|
502 keybd_event (VK_CONTROL, control_scan_code, 0, 0);
|
|
|
503 keybd_event (vk_break_code, break_scan_code,
|
|
|
504 (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY), 0);
|
|
|
505 keybd_event (vk_break_code, break_scan_code,
|
|
|
506 (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY)
|
|
|
507 | KEYEVENTF_KEYUP, 0);
|
|
|
508 keybd_event (VK_CONTROL, control_scan_code,
|
|
|
509 KEYEVENTF_KEYUP, 0);
|
|
|
510
|
|
|
511 /* Sleep for a bit to give time for Emacs frame to respond
|
|
|
512 to focus change events (if Emacs was active app). */
|
|
|
513 Sleep (100);
|
|
|
514
|
|
|
515 SetForegroundWindow (foreground_window);
|
|
|
516 }
|
|
|
517 /* Detach from the foreground and child threads now that
|
|
|
518 the foreground switching is over. */
|
|
|
519 if (foreground_thread)
|
|
|
520 AttachThreadInput (GetCurrentThreadId (),
|
|
|
521 foreground_thread, FALSE);
|
|
|
522 if (child_thread)
|
|
|
523 AttachThreadInput (GetCurrentThreadId (),
|
|
|
524 child_thread, FALSE);
|
|
|
525 }
|
|
|
526 }
|
|
|
527 /* Ctrl-Break is NT equivalent of SIGINT. */
|
|
|
528 else if (!GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, pid))
|
|
|
529 {
|
|
|
530 #if 0 /* FSF Emacs */
|
|
|
531 DebPrint (("sys_kill.GenerateConsoleCtrlEvent return %d "
|
|
|
532 "for pid %lu\n", GetLastError (), pid));
|
|
|
533 errno = EINVAL;
|
|
|
534 #endif
|
|
|
535 rc = 0;
|
|
|
536 }
|
|
|
537 }
|
|
|
538 else
|
|
|
539 {
|
|
|
540 if (NILP (Vmswindows_start_process_share_console) && cp && cp->hwnd)
|
|
|
541 {
|
|
|
542 #if 1
|
|
|
543 if (mswindows_windows9x_p ())
|
|
|
544 {
|
|
|
545 /*
|
|
|
546 Another possibility is to try terminating the VDM out-right by
|
|
|
547 calling the Shell VxD (id 0x17) V86 interface, function #4
|
|
|
548 "SHELL_Destroy_VM", ie.
|
|
|
549
|
|
|
550 mov edx,4
|
|
|
551 mov ebx,vm_handle
|
|
|
552 call shellapi
|
|
|
553
|
|
|
554 First need to determine the current VM handle, and then arrange for
|
|
|
555 the shellapi call to be made from the system vm (by using
|
|
|
556 Switch_VM_and_callback).
|
|
|
557
|
|
|
558 Could try to invoke DestroyVM through CallVxD.
|
|
|
559
|
|
|
560 */
|
|
|
561 #if 0
|
|
|
562 /* On Win95, posting WM_QUIT causes the 16-bit subsystem
|
|
|
563 to hang when cmdproxy is used in conjunction with
|
|
|
564 command.com for an interactive shell. Posting
|
|
|
565 WM_CLOSE pops up a dialog that, when Yes is selected,
|
|
|
566 does the same thing. TerminateProcess is also less
|
|
|
567 than ideal in that subprocesses tend to stick around
|
|
|
568 until the machine is shutdown, but at least it
|
|
|
569 doesn't freeze the 16-bit subsystem. */
|
|
|
570 PostMessage (cp->hwnd, WM_QUIT, 0xff, 0);
|
|
|
571 #endif
|
|
|
572 if (!TerminateProcess (h_process, 0xff))
|
|
|
573 {
|
|
|
574 #if 0 /* FSF Emacs */
|
|
|
575 DebPrint (("sys_kill.TerminateProcess returned %d "
|
|
|
576 "for pid %lu\n", GetLastError (), pid));
|
|
|
577 errno = EINVAL;
|
|
|
578 #endif
|
|
|
579 rc = 0;
|
|
|
580 }
|
|
|
581 }
|
|
|
582 else
|
|
|
583 #endif
|
|
|
584 PostMessage (cp->hwnd, WM_CLOSE, 0, 0);
|
|
|
585 }
|
|
|
586 /* Kill the process. On W32 this doesn't kill child processes
|
|
|
587 so it doesn't work very well for shells which is why it's not
|
|
|
588 used in every case. */
|
|
|
589 else if (!TerminateProcess (h_process, 0xff))
|
|
|
590 {
|
|
|
591 #if 0 /* FSF Emacs */
|
|
|
592 DebPrint (("sys_kill.TerminateProcess returned %d "
|
|
|
593 "for pid %lu\n", GetLastError (), pid));
|
|
|
594 errno = EINVAL;
|
|
|
595 #endif
|
|
|
596 rc = 0;
|
|
|
597 }
|
|
|
598 }
|
|
|
599
|
|
|
600 if (close_process)
|
|
|
601 CloseHandle (h_process);
|
|
|
602
|
|
|
603 return rc;
|
|
|
604 }
|
|
|
605
|
|
|
606 /* -------------------------- all-OS functions ---------------------------- */
|
|
|
607
|
|
|
608 static int
|
|
|
609 send_signal (struct nt_process_data *cp, int pid, int signo)
|
|
|
610 {
|
|
|
611 return (!mswindows_windows9x_p () && send_signal_the_nt_way (cp, pid, signo))
|
|
|
612 || send_signal_the_95_way (cp, pid, signo);
|
|
|
613 }
|
|
|
614
|
|
428
|
615 /*
|
|
|
616 * Signal error if SIGNO is not supported
|
|
|
617 */
|
|
|
618 static void
|
|
|
619 validate_signal_number (int signo)
|
|
|
620 {
|
|
|
621 if (signo != SIGKILL && signo != SIGTERM
|
|
|
622 && signo != SIGQUIT && signo != SIGINT
|
|
|
623 && signo != SIGHUP)
|
|
442
|
624 invalid_argument ("Signal number not supported", make_int (signo));
|
|
428
|
625 }
|
|
|
626
|
|
|
627 /*-----------------------------------------------------------------------*/
|
|
|
628 /* Process methods */
|
|
|
629 /*-----------------------------------------------------------------------*/
|
|
|
630
|
|
|
631 /*
|
|
|
632 * Allocate and initialize Lisp_Process->process_data
|
|
|
633 */
|
|
|
634
|
|
|
635 static void
|
|
440
|
636 nt_alloc_process_data (Lisp_Process *p)
|
|
428
|
637 {
|
|
|
638 p->process_data = xnew_and_zero (struct nt_process_data);
|
|
|
639 }
|
|
|
640
|
|
|
641 static void
|
|
440
|
642 nt_finalize_process_data (Lisp_Process *p, int for_disksave)
|
|
428
|
643 {
|
|
|
644 assert (!for_disksave);
|
|
442
|
645 if (NT_DATA (p)->h_process)
|
|
|
646 CloseHandle (NT_DATA (p)->h_process);
|
|
428
|
647 }
|
|
|
648
|
|
|
649 /*
|
|
|
650 * Initialize XEmacs process implementation once
|
|
|
651 */
|
|
|
652 static void
|
|
|
653 nt_init_process (void)
|
|
|
654 {
|
|
|
655 /* Initialize winsock */
|
|
|
656 WSADATA wsa_data;
|
|
|
657 /* Request Winsock v1.1 Note the order: (minor=1, major=1) */
|
|
|
658 WSAStartup (MAKEWORD (1,1), &wsa_data);
|
|
|
659 }
|
|
|
660
|
|
|
661 /*
|
|
|
662 * Fork off a subprocess. P is a pointer to newly created subprocess
|
|
|
663 * object. If this function signals, the caller is responsible for
|
|
|
664 * deleting (and finalizing) the process object.
|
|
|
665 *
|
|
|
666 * The method must return PID of the new process, a (positive??? ####) number
|
|
|
667 * which fits into Lisp_Int. No return value indicates an error, the method
|
|
|
668 * must signal an error instead.
|
|
|
669 */
|
|
|
670
|
|
|
671 static void
|
|
|
672 signal_cannot_launch (Lisp_Object image_file, DWORD err)
|
|
|
673 {
|
|
|
674 mswindows_set_errno (err);
|
|
442
|
675 report_file_error ("Error starting", image_file);
|
|
|
676 }
|
|
|
677
|
|
|
678 static void
|
|
|
679 ensure_console_window_exists (void)
|
|
|
680 {
|
|
|
681 if (mswindows_windows9x_p ())
|
|
|
682 mswindows_hide_console ();
|
|
|
683 }
|
|
|
684
|
|
|
685 int
|
|
|
686 compare_env (const void *strp1, const void *strp2)
|
|
|
687 {
|
|
|
688 const char *str1 = *(const char**)strp1, *str2 = *(const char**)strp2;
|
|
|
689
|
|
|
690 while (*str1 && *str2 && *str1 != '=' && *str2 != '=')
|
|
|
691 {
|
|
|
692 if ((*str1) > (*str2))
|
|
|
693 return 1;
|
|
|
694 else if ((*str1) < (*str2))
|
|
|
695 return -1;
|
|
|
696 str1++, str2++;
|
|
|
697 }
|
|
|
698
|
|
|
699 if (*str1 == '=' && *str2 == '=')
|
|
|
700 return 0;
|
|
|
701 else if (*str1 == '=')
|
|
|
702 return -1;
|
|
|
703 else
|
|
|
704 return 1;
|
|
428
|
705 }
|
|
|
706
|
|
|
707 static int
|
|
440
|
708 nt_create_process (Lisp_Process *p,
|
|
428
|
709 Lisp_Object *argv, int nargv,
|
|
|
710 Lisp_Object program, Lisp_Object cur_dir)
|
|
|
711 {
|
|
442
|
712 /* Synched up with sys_spawnve in FSF 20.6. Significantly different
|
|
|
713 but still synchable. */
|
|
430
|
714 HANDLE hmyshove, hmyslurp, hprocin, hprocout, hprocerr;
|
|
442
|
715 Extbyte *command_line;
|
|
428
|
716 BOOL do_io, windowed;
|
|
|
717 char *proc_env;
|
|
|
718
|
|
442
|
719 /* No need to DOS-ize the filename; expand-file-name (called prior)
|
|
|
720 already does this. */
|
|
|
721
|
|
428
|
722 /* Find out whether the application is windowed or not */
|
|
442
|
723 if (xSHGetFileInfoA)
|
|
|
724 {
|
|
|
725 /* SHGetFileInfo tends to return ERROR_FILE_NOT_FOUND on most
|
|
|
726 errors. This leads to bogus error message. */
|
|
|
727 DWORD image_type;
|
|
|
728 char *p = strrchr ((char *)XSTRING_DATA (program), '.');
|
|
|
729 if (p != NULL &&
|
|
|
730 (stricmp (p, ".exe") == 0 ||
|
|
|
731 stricmp (p, ".com") == 0 ||
|
|
|
732 stricmp (p, ".bat") == 0 ||
|
|
|
733 stricmp (p, ".cmd") == 0))
|
|
|
734 {
|
|
|
735 image_type = xSHGetFileInfoA ((char *)XSTRING_DATA (program), 0,NULL,
|
|
|
736 0, SHGFI_EXETYPE);
|
|
|
737 }
|
|
|
738 else
|
|
|
739 {
|
|
|
740 char progname[MAX_PATH];
|
|
|
741 sprintf (progname, "%s.exe", (char *)XSTRING_DATA (program));
|
|
|
742 image_type = xSHGetFileInfoA (progname, 0, NULL, 0, SHGFI_EXETYPE);
|
|
|
743 }
|
|
|
744 if (image_type == 0)
|
|
|
745 signal_cannot_launch (program, (GetLastError () == ERROR_FILE_NOT_FOUND
|
|
|
746 ? ERROR_BAD_FORMAT : GetLastError ()));
|
|
|
747 windowed = HIWORD (image_type) != 0;
|
|
|
748 }
|
|
|
749 else /* NT 3.5; we have no idea so just guess. */
|
|
|
750 windowed = 0;
|
|
428
|
751
|
|
|
752 /* Decide whether to do I/O on process handles, or just mark the
|
|
|
753 process exited immediately upon successful launching. We do I/O if the
|
|
|
754 process is a console one, or if it is windowed but windowed_process_io
|
|
|
755 is non-zero */
|
|
|
756 do_io = !windowed || windowed_process_io ;
|
|
|
757
|
|
|
758 if (do_io)
|
|
|
759 {
|
|
|
760 /* Create two unidirectional named pipes */
|
|
|
761 HANDLE htmp;
|
|
|
762 SECURITY_ATTRIBUTES sa;
|
|
|
763
|
|
|
764 sa.nLength = sizeof(sa);
|
|
|
765 sa.bInheritHandle = TRUE;
|
|
|
766 sa.lpSecurityDescriptor = NULL;
|
|
|
767
|
|
|
768 CreatePipe (&hprocin, &hmyshove, &sa, 0);
|
|
|
769 CreatePipe (&hmyslurp, &hprocout, &sa, 0);
|
|
|
770
|
|
430
|
771 /* Duplicate the stdout handle for use as stderr */
|
|
442
|
772 DuplicateHandle(GetCurrentProcess(), hprocout, GetCurrentProcess(),
|
|
|
773 &hprocerr, 0, TRUE, DUPLICATE_SAME_ACCESS);
|
|
430
|
774
|
|
428
|
775 /* Stupid Win32 allows to create a pipe with *both* ends either
|
|
|
776 inheritable or not. We need process ends inheritable, and local
|
|
|
777 ends not inheritable. */
|
|
442
|
778 DuplicateHandle (GetCurrentProcess(), hmyshove, GetCurrentProcess(),
|
|
|
779 &htmp, 0, FALSE,
|
|
|
780 DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS);
|
|
428
|
781 hmyshove = htmp;
|
|
442
|
782 DuplicateHandle (GetCurrentProcess(), hmyslurp, GetCurrentProcess(),
|
|
|
783 &htmp, 0, FALSE,
|
|
|
784 DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS);
|
|
428
|
785 hmyslurp = htmp;
|
|
|
786 }
|
|
|
787
|
|
|
788 /* Convert an argv vector into Win32 style command line by a call to
|
|
442
|
789 lisp function `mswindows-construct-process-command-line'
|
|
|
790 (in win32-native.el) */
|
|
428
|
791 {
|
|
|
792 int i;
|
|
|
793 Lisp_Object args_or_ret = Qnil;
|
|
|
794 struct gcpro gcpro1;
|
|
|
795
|
|
|
796 GCPRO1 (args_or_ret);
|
|
|
797
|
|
|
798 for (i = 0; i < nargv; ++i)
|
|
|
799 args_or_ret = Fcons (*argv++, args_or_ret);
|
|
|
800 args_or_ret = Fnreverse (args_or_ret);
|
|
|
801 args_or_ret = Fcons (program, args_or_ret);
|
|
|
802
|
|
442
|
803 args_or_ret = call1 (Qmswindows_construct_process_command_line,
|
|
|
804 args_or_ret);
|
|
428
|
805
|
|
|
806 if (!STRINGP (args_or_ret))
|
|
|
807 /* Luser wrote his/her own clever version */
|
|
442
|
808 invalid_argument
|
|
|
809 ("Bogus return value from `mswindows-construct-process-command-line'",
|
|
|
810 args_or_ret);
|
|
428
|
811
|
|
442
|
812 LISP_STRING_TO_EXTERNAL (args_or_ret, command_line, Qmswindows_tstr);
|
|
428
|
813
|
|
|
814 UNGCPRO; /* args_or_ret */
|
|
|
815 }
|
|
|
816
|
|
|
817 /* Set `proc_env' to a nul-separated array of the strings in
|
|
|
818 Vprocess_environment terminated by 2 nuls. */
|
|
|
819
|
|
|
820 {
|
|
|
821 char **env;
|
|
|
822 REGISTER Lisp_Object tem;
|
|
|
823 REGISTER char **new_env;
|
|
|
824 REGISTER int new_length = 0, i, new_space;
|
|
|
825 char *penv;
|
|
|
826
|
|
|
827 for (tem = Vprocess_environment;
|
|
|
828 (CONSP (tem)
|
|
|
829 && STRINGP (XCAR (tem)));
|
|
|
830 tem = XCDR (tem))
|
|
|
831 new_length++;
|
|
442
|
832
|
|
|
833 /* FSF adds an extra env var to hold the current process ID of the
|
|
|
834 Emacs process. Apparently this is used only by emacsserver.c,
|
|
|
835 which we have superseded to gnuserv.c. (#### Does it work under
|
|
|
836 MS Windows?)
|
|
|
837
|
|
|
838 sprintf (ppid_env_var_buffer, "EM_PARENT_PROCESS_ID=%d",
|
|
|
839 GetCurrentProcessId ());
|
|
|
840 arglen += strlen (ppid_env_var_buffer) + 1;
|
|
|
841 numenv++;
|
|
|
842 */
|
|
428
|
843
|
|
|
844 /* new_length + 1 to include terminating 0. */
|
|
|
845 env = new_env = alloca_array (char *, new_length + 1);
|
|
|
846
|
|
|
847 /* Copy the Vprocess_environment strings into new_env. */
|
|
|
848 for (tem = Vprocess_environment;
|
|
|
849 (CONSP (tem)
|
|
|
850 && STRINGP (XCAR (tem)));
|
|
|
851 tem = XCDR (tem))
|
|
|
852 {
|
|
|
853 char **ep = env;
|
|
|
854 char *string = (char *) XSTRING_DATA (XCAR (tem));
|
|
|
855 /* See if this string duplicates any string already in the env.
|
|
|
856 If so, don't put it in.
|
|
|
857 When an env var has multiple definitions,
|
|
|
858 we keep the definition that comes first in process-environment. */
|
|
|
859 for (; ep != new_env; ep++)
|
|
|
860 {
|
|
|
861 char *p = *ep, *q = string;
|
|
|
862 while (1)
|
|
|
863 {
|
|
|
864 if (*q == 0)
|
|
|
865 /* The string is malformed; might as well drop it. */
|
|
|
866 goto duplicate;
|
|
|
867 if (*q != *p)
|
|
|
868 break;
|
|
|
869 if (*q == '=')
|
|
|
870 goto duplicate;
|
|
|
871 p++, q++;
|
|
|
872 }
|
|
|
873 }
|
|
|
874 *new_env++ = string;
|
|
|
875 duplicate: ;
|
|
|
876 }
|
|
|
877 *new_env = 0;
|
|
|
878
|
|
|
879 /* Sort the environment variables */
|
|
|
880 new_length = new_env - env;
|
|
|
881 qsort (env, new_length, sizeof (char *), compare_env);
|
|
|
882
|
|
|
883 /* Work out how much space to allocate */
|
|
|
884 new_space = 0;
|
|
|
885 for (i = 0; i < new_length; i++)
|
|
|
886 {
|
|
|
887 new_space += strlen(env[i]) + 1;
|
|
|
888 }
|
|
|
889 new_space++;
|
|
|
890
|
|
|
891 /* Allocate space and copy variables into it */
|
|
442
|
892 penv = proc_env = (char*) alloca(new_space);
|
|
428
|
893 for (i = 0; i < new_length; i++)
|
|
|
894 {
|
|
|
895 strcpy(penv, env[i]);
|
|
|
896 penv += strlen(env[i]) + 1;
|
|
|
897 }
|
|
|
898 *penv = 0;
|
|
|
899 }
|
|
442
|
900
|
|
|
901 #if 0
|
|
|
902 /* #### we need to port this. */
|
|
|
903 /* On Windows 95, if cmdname is a DOS app, we invoke a helper
|
|
|
904 application to start it by specifying the helper app as cmdname,
|
|
|
905 while leaving the real app name as argv[0]. */
|
|
|
906 if (is_dos_app)
|
|
|
907 {
|
|
|
908 cmdname = (char*) alloca (MAXPATHLEN);
|
|
|
909 if (egetenv ("CMDPROXY"))
|
|
|
910 strcpy ((char*)cmdname, egetenv ("CMDPROXY"));
|
|
|
911 else
|
|
|
912 {
|
|
|
913 strcpy ((char*)cmdname, XSTRING_DATA (Vinvocation_directory));
|
|
|
914 strcat ((char*)cmdname, "cmdproxy.exe");
|
|
|
915 }
|
|
|
916 }
|
|
|
917 #endif
|
|
428
|
918
|
|
|
919 /* Create process */
|
|
|
920 {
|
|
|
921 STARTUPINFO si;
|
|
|
922 PROCESS_INFORMATION pi;
|
|
|
923 DWORD err;
|
|
442
|
924 DWORD flags;
|
|
428
|
925
|
|
|
926 xzero (si);
|
|
|
927 si.dwFlags = STARTF_USESHOWWINDOW;
|
|
|
928 si.wShowWindow = windowed ? SW_SHOWNORMAL : SW_HIDE;
|
|
|
929 if (do_io)
|
|
|
930 {
|
|
|
931 si.hStdInput = hprocin;
|
|
|
932 si.hStdOutput = hprocout;
|
|
430
|
933 si.hStdError = hprocerr;
|
|
428
|
934 si.dwFlags |= STARTF_USESTDHANDLES;
|
|
|
935 }
|
|
|
936
|
|
442
|
937 flags = CREATE_SUSPENDED;
|
|
|
938 if (mswindows_windows9x_p ())
|
|
|
939 flags |= (!NILP (Vmswindows_start_process_share_console)
|
|
|
940 ? CREATE_NEW_PROCESS_GROUP
|
|
|
941 : CREATE_NEW_CONSOLE);
|
|
|
942 else
|
|
|
943 flags |= CREATE_NEW_CONSOLE | CREATE_NEW_PROCESS_GROUP;
|
|
|
944 if (NILP (Vmswindows_start_process_inherit_error_mode))
|
|
|
945 flags |= CREATE_DEFAULT_ERROR_MODE;
|
|
|
946
|
|
|
947 ensure_console_window_exists ();
|
|
|
948
|
|
|
949 err = (CreateProcess (NULL, command_line, NULL, NULL, TRUE, flags,
|
|
428
|
950 proc_env, (char *) XSTRING_DATA (cur_dir), &si, &pi)
|
|
|
951 ? 0 : GetLastError ());
|
|
|
952
|
|
|
953 if (do_io)
|
|
|
954 {
|
|
|
955 /* These just have been inherited; we do not need a copy */
|
|
|
956 CloseHandle (hprocin);
|
|
|
957 CloseHandle (hprocout);
|
|
430
|
958 CloseHandle (hprocerr);
|
|
428
|
959 }
|
|
|
960
|
|
|
961 /* Handle process creation failure */
|
|
|
962 if (err)
|
|
|
963 {
|
|
|
964 if (do_io)
|
|
|
965 {
|
|
|
966 CloseHandle (hmyshove);
|
|
|
967 CloseHandle (hmyslurp);
|
|
|
968 }
|
|
|
969 signal_cannot_launch (program, GetLastError ());
|
|
|
970 }
|
|
|
971
|
|
|
972 /* The process started successfully */
|
|
|
973 if (do_io)
|
|
|
974 {
|
|
|
975 NT_DATA(p)->h_process = pi.hProcess;
|
|
442
|
976 NT_DATA(p)->dwProcessId = pi.dwProcessId;
|
|
428
|
977 init_process_io_handles (p, (void*)hmyslurp, (void*)hmyshove, 0);
|
|
|
978 }
|
|
|
979 else
|
|
|
980 {
|
|
|
981 /* Indicate as if the process has exited immediately. */
|
|
|
982 p->status_symbol = Qexit;
|
|
|
983 CloseHandle (pi.hProcess);
|
|
|
984 }
|
|
|
985
|
|
442
|
986 if (!windowed)
|
|
|
987 enable_child_signals (pi.hProcess);
|
|
|
988
|
|
428
|
989 ResumeThread (pi.hThread);
|
|
|
990 CloseHandle (pi.hThread);
|
|
|
991
|
|
432
|
992 return ((int)pi.dwProcessId);
|
|
428
|
993 }
|
|
|
994 }
|
|
|
995
|
|
|
996 /*
|
|
|
997 * This method is called to update status fields of the process
|
|
|
998 * structure. If the process has not existed, this method is expected
|
|
|
999 * to do nothing.
|
|
|
1000 *
|
|
|
1001 * The method is called only for real child processes.
|
|
|
1002 */
|
|
|
1003
|
|
|
1004 static void
|
|
440
|
1005 nt_update_status_if_terminated (Lisp_Process* p)
|
|
428
|
1006 {
|
|
|
1007 DWORD exit_code;
|
|
|
1008 if (GetExitCodeProcess (NT_DATA(p)->h_process, &exit_code)
|
|
|
1009 && exit_code != STILL_ACTIVE)
|
|
|
1010 {
|
|
|
1011 p->tick++;
|
|
|
1012 p->core_dumped = 0;
|
|
|
1013 /* The exit code can be a code returned by process, or an
|
|
|
1014 NTSTATUS value. We cannot accurately handle the latter since
|
|
|
1015 it is a full 32 bit integer */
|
|
|
1016 if (exit_code & 0xC0000000)
|
|
|
1017 {
|
|
|
1018 p->status_symbol = Qsignal;
|
|
|
1019 p->exit_code = exit_code & 0x1FFFFFFF;
|
|
|
1020 }
|
|
|
1021 else
|
|
|
1022 {
|
|
|
1023 p->status_symbol = Qexit;
|
|
|
1024 p->exit_code = exit_code;
|
|
|
1025 }
|
|
|
1026 }
|
|
|
1027 }
|
|
|
1028
|
|
|
1029 /*
|
|
|
1030 * Stuff the entire contents of LSTREAM to the process output pipe
|
|
|
1031 */
|
|
|
1032
|
|
|
1033 /* #### If only this function could be somehow merged with
|
|
|
1034 unix_send_process... */
|
|
|
1035
|
|
|
1036 static void
|
|
|
1037 nt_send_process (Lisp_Object proc, struct lstream* lstream)
|
|
|
1038 {
|
|
432
|
1039 volatile Lisp_Object vol_proc = proc;
|
|
440
|
1040 Lisp_Process *volatile p = XPROCESS (proc);
|
|
428
|
1041
|
|
|
1042 /* use a reasonable-sized buffer (somewhere around the size of the
|
|
|
1043 stream buffer) so as to avoid inundating the stream with blocked
|
|
|
1044 data. */
|
|
442
|
1045 Bufbyte chunkbuf[512];
|
|
428
|
1046 Bytecount chunklen;
|
|
|
1047
|
|
|
1048 while (1)
|
|
|
1049 {
|
|
462
|
1050 Lstream_data_count writeret;
|
|
428
|
1051
|
|
442
|
1052 chunklen = Lstream_read (lstream, chunkbuf, 512);
|
|
428
|
1053 if (chunklen <= 0)
|
|
|
1054 break; /* perhaps should abort() if < 0?
|
|
|
1055 This should never happen. */
|
|
|
1056
|
|
|
1057 /* Lstream_write() will never successfully write less than the
|
|
|
1058 amount sent in. In the worst case, it just buffers the
|
|
|
1059 unwritten data. */
|
|
|
1060 writeret = Lstream_write (XLSTREAM (DATA_OUTSTREAM(p)), chunkbuf,
|
|
|
1061 chunklen);
|
|
|
1062 Lstream_flush (XLSTREAM (DATA_OUTSTREAM(p)));
|
|
|
1063 if (writeret < 0)
|
|
|
1064 {
|
|
|
1065 p->status_symbol = Qexit;
|
|
|
1066 p->exit_code = ERROR_BROKEN_PIPE;
|
|
|
1067 p->core_dumped = 0;
|
|
|
1068 p->tick++;
|
|
|
1069 process_tick++;
|
|
432
|
1070 deactivate_process (*((Lisp_Object *) (&vol_proc)));
|
|
442
|
1071 invalid_operation ("Broken pipe error sending to process; closed it",
|
|
|
1072 p->name);
|
|
428
|
1073 }
|
|
|
1074
|
|
|
1075 {
|
|
|
1076 int wait_ms = 25;
|
|
|
1077 while (Lstream_was_blocked_p (XLSTREAM (p->pipe_outstream)))
|
|
|
1078 {
|
|
|
1079 /* Buffer is full. Wait, accepting input; that may allow
|
|
|
1080 the program to finish doing output and read more. */
|
|
|
1081 Faccept_process_output (Qnil, Qzero, make_int (wait_ms));
|
|
|
1082 Lstream_flush (XLSTREAM (p->pipe_outstream));
|
|
|
1083 wait_ms = min (1000, 2 * wait_ms);
|
|
|
1084 }
|
|
|
1085 }
|
|
|
1086 }
|
|
|
1087 }
|
|
|
1088
|
|
|
1089 /*
|
|
|
1090 * Send a signal number SIGNO to PROCESS.
|
|
|
1091 * CURRENT_GROUP means send to the process group that currently owns
|
|
|
1092 * the terminal being used to communicate with PROCESS.
|
|
|
1093 * This is used for various commands in shell mode.
|
|
|
1094 * If NOMSG is zero, insert signal-announcements into process's buffers
|
|
|
1095 * right away.
|
|
|
1096 *
|
|
|
1097 * If we can, we try to signal PROCESS by sending control characters
|
|
|
1098 * down the pty. This allows us to signal inferiors who have changed
|
|
|
1099 * their uid, for which killpg would return an EPERM error.
|
|
|
1100 *
|
|
|
1101 * The method signals an error if the given SIGNO is not valid
|
|
|
1102 */
|
|
|
1103
|
|
|
1104 static void
|
|
|
1105 nt_kill_child_process (Lisp_Object proc, int signo,
|
|
|
1106 int current_group, int nomsg)
|
|
|
1107 {
|
|
440
|
1108 Lisp_Process *p = XPROCESS (proc);
|
|
428
|
1109
|
|
|
1110 /* Signal error if SIGNO cannot be sent */
|
|
|
1111 validate_signal_number (signo);
|
|
|
1112
|
|
|
1113 /* Send signal */
|
|
442
|
1114 if (!send_signal (NT_DATA (p), 0, signo))
|
|
|
1115 invalid_operation ("Cannot send signal to process", proc);
|
|
428
|
1116 }
|
|
|
1117
|
|
|
1118 /*
|
|
442
|
1119 * Kill any process in the system given its PID
|
|
428
|
1120 *
|
|
|
1121 * Returns zero if a signal successfully sent, or
|
|
|
1122 * negative number upon failure
|
|
|
1123 */
|
|
|
1124 static int
|
|
|
1125 nt_kill_process_by_pid (int pid, int signo)
|
|
|
1126 {
|
|
442
|
1127 struct Lisp_Process *p;
|
|
|
1128
|
|
428
|
1129 /* Signal error if SIGNO cannot be sent */
|
|
|
1130 validate_signal_number (signo);
|
|
|
1131
|
|
442
|
1132 p = find_process_from_pid (pid);
|
|
|
1133 return send_signal (p ? NT_DATA (p) : 0, pid, signo) ? 0 : -1;
|
|
428
|
1134 }
|
|
|
1135
|
|
|
1136 /*-----------------------------------------------------------------------*/
|
|
|
1137 /* Sockets connections */
|
|
|
1138 /*-----------------------------------------------------------------------*/
|
|
|
1139 #ifdef HAVE_SOCKETS
|
|
|
1140
|
|
|
1141 /* #### Hey MS, how long Winsock 2 for '95 will be in beta? */
|
|
|
1142
|
|
|
1143 #define SOCK_TIMER_ID 666
|
|
|
1144 #define XM_SOCKREPLY (WM_USER + 666)
|
|
|
1145
|
|
|
1146 static int
|
|
|
1147 get_internet_address (Lisp_Object host, struct sockaddr_in *address,
|
|
|
1148 Error_behavior errb)
|
|
|
1149 {
|
|
|
1150 char buf [MAXGETHOSTSTRUCT];
|
|
|
1151 HWND hwnd;
|
|
|
1152 HANDLE hasync;
|
|
|
1153 int success = 0;
|
|
|
1154
|
|
|
1155 address->sin_family = AF_INET;
|
|
|
1156
|
|
|
1157 /* First check if HOST is already a numeric address */
|
|
|
1158 {
|
|
|
1159 unsigned long inaddr = inet_addr (XSTRING_DATA (host));
|
|
|
1160 if (inaddr != INADDR_NONE)
|
|
|
1161 {
|
|
|
1162 address->sin_addr.s_addr = inaddr;
|
|
|
1163 return 1;
|
|
|
1164 }
|
|
|
1165 }
|
|
|
1166
|
|
|
1167 /* Create a window which will receive completion messages */
|
|
|
1168 hwnd = CreateWindow ("STATIC", NULL, WS_OVERLAPPED, 0, 0, 1, 1,
|
|
|
1169 NULL, NULL, NULL, NULL);
|
|
|
1170 assert (hwnd);
|
|
|
1171
|
|
|
1172 /* Post name resolution request */
|
|
|
1173 hasync = WSAAsyncGetHostByName (hwnd, XM_SOCKREPLY, XSTRING_DATA (host),
|
|
|
1174 buf, sizeof (buf));
|
|
|
1175 if (hasync == NULL)
|
|
|
1176 goto done;
|
|
|
1177
|
|
|
1178 /* Set a timer to poll for quit every 250 ms */
|
|
|
1179 SetTimer (hwnd, SOCK_TIMER_ID, 250, NULL);
|
|
|
1180
|
|
|
1181 while (1)
|
|
|
1182 {
|
|
|
1183 MSG msg;
|
|
|
1184 GetMessage (&msg, hwnd, 0, 0);
|
|
|
1185 if (msg.message == XM_SOCKREPLY)
|
|
|
1186 {
|
|
|
1187 /* Ok, got an answer */
|
|
|
1188 if (WSAGETASYNCERROR(msg.lParam) == NO_ERROR)
|
|
|
1189 success = 1;
|
|
432
|
1190 else
|
|
|
1191 {
|
|
|
1192 warn_when_safe(Qstream, Qwarning,
|
|
|
1193 "cannot get IP address for host \"%s\"",
|
|
|
1194 XSTRING_DATA (host));
|
|
|
1195 }
|
|
428
|
1196 goto done;
|
|
|
1197 }
|
|
|
1198 else if (msg.message == WM_TIMER && msg.wParam == SOCK_TIMER_ID)
|
|
|
1199 {
|
|
|
1200 if (QUITP)
|
|
|
1201 {
|
|
|
1202 WSACancelAsyncRequest (hasync);
|
|
|
1203 KillTimer (hwnd, SOCK_TIMER_ID);
|
|
|
1204 DestroyWindow (hwnd);
|
|
|
1205 REALLY_QUIT;
|
|
|
1206 }
|
|
|
1207 }
|
|
|
1208 DispatchMessage (&msg);
|
|
|
1209 }
|
|
|
1210
|
|
|
1211 done:
|
|
|
1212 KillTimer (hwnd, SOCK_TIMER_ID);
|
|
|
1213 DestroyWindow (hwnd);
|
|
|
1214 if (success)
|
|
|
1215 {
|
|
|
1216 /* BUF starts with struct hostent */
|
|
|
1217 struct hostent* he = (struct hostent*) buf;
|
|
|
1218 address->sin_addr.s_addr = *(unsigned long*)he->h_addr_list[0];
|
|
|
1219 }
|
|
|
1220 return success;
|
|
|
1221 }
|
|
|
1222
|
|
|
1223 static Lisp_Object
|
|
|
1224 nt_canonicalize_host_name (Lisp_Object host)
|
|
|
1225 {
|
|
|
1226 struct sockaddr_in address;
|
|
|
1227
|
|
|
1228 if (!get_internet_address (host, &address, ERROR_ME_NOT))
|
|
|
1229 return host;
|
|
|
1230
|
|
|
1231 if (address.sin_family == AF_INET)
|
|
|
1232 return build_string (inet_ntoa (address.sin_addr));
|
|
|
1233 else
|
|
|
1234 return host;
|
|
|
1235 }
|
|
|
1236
|
|
|
1237 /* open a TCP network connection to a given HOST/SERVICE. Treated
|
|
|
1238 exactly like a normal process when reading and writing. Only
|
|
|
1239 differences are in status display and process deletion. A network
|
|
|
1240 connection has no PID; you cannot signal it. All you can do is
|
|
|
1241 deactivate and close it via delete-process */
|
|
|
1242
|
|
|
1243 static void
|
|
442
|
1244 nt_open_network_stream (Lisp_Object name, Lisp_Object host,
|
|
|
1245 Lisp_Object service,
|
|
428
|
1246 Lisp_Object protocol, void** vinfd, void** voutfd)
|
|
|
1247 {
|
|
442
|
1248 /* !!#### not Mule-ized */
|
|
428
|
1249 struct sockaddr_in address;
|
|
|
1250 SOCKET s;
|
|
|
1251 int port;
|
|
|
1252 int retval;
|
|
|
1253
|
|
|
1254 CHECK_STRING (host);
|
|
|
1255
|
|
|
1256 if (!EQ (protocol, Qtcp))
|
|
442
|
1257 invalid_argument ("Unsupported protocol", protocol);
|
|
428
|
1258
|
|
|
1259 if (INTP (service))
|
|
|
1260 port = htons ((unsigned short) XINT (service));
|
|
|
1261 else
|
|
|
1262 {
|
|
|
1263 struct servent *svc_info;
|
|
|
1264 CHECK_STRING (service);
|
|
|
1265 svc_info = getservbyname ((char *) XSTRING_DATA (service), "tcp");
|
|
|
1266 if (svc_info == 0)
|
|
442
|
1267 invalid_argument ("Unknown service", service);
|
|
428
|
1268 port = svc_info->s_port;
|
|
|
1269 }
|
|
|
1270
|
|
|
1271 get_internet_address (host, &address, ERROR_ME);
|
|
|
1272 address.sin_port = port;
|
|
|
1273
|
|
|
1274 s = socket (address.sin_family, SOCK_STREAM, 0);
|
|
|
1275 if (s < 0)
|
|
|
1276 report_file_error ("error creating socket", list1 (name));
|
|
|
1277
|
|
|
1278 /* We don't want to be blocked on connect */
|
|
|
1279 {
|
|
|
1280 unsigned long nonblock = 1;
|
|
|
1281 ioctlsocket (s, FIONBIO, &nonblock);
|
|
|
1282 }
|
|
|
1283
|
|
|
1284 retval = connect (s, (struct sockaddr *) &address, sizeof (address));
|
|
|
1285 if (retval != NO_ERROR && WSAGetLastError() != WSAEWOULDBLOCK)
|
|
|
1286 goto connect_failed;
|
|
|
1287 /* Wait while connection is established */
|
|
|
1288 while (1)
|
|
|
1289 {
|
|
|
1290 fd_set fdset;
|
|
|
1291 struct timeval tv;
|
|
|
1292 int nsel;
|
|
|
1293
|
|
|
1294 if (QUITP)
|
|
|
1295 {
|
|
|
1296 closesocket (s);
|
|
|
1297 REALLY_QUIT;
|
|
|
1298 }
|
|
|
1299
|
|
|
1300 /* Poll for quit every 250 ms */
|
|
|
1301 tv.tv_sec = 0;
|
|
|
1302 tv.tv_usec = 250 * 1000;
|
|
|
1303
|
|
|
1304 FD_ZERO (&fdset);
|
|
|
1305 FD_SET (s, &fdset);
|
|
|
1306 nsel = select (0, NULL, &fdset, &fdset, &tv);
|
|
|
1307
|
|
|
1308 if (nsel > 0)
|
|
|
1309 {
|
|
|
1310 /* Check: was connection successful or not? */
|
|
|
1311 tv.tv_usec = 0;
|
|
|
1312 nsel = select (0, NULL, NULL, &fdset, &tv);
|
|
|
1313 if (nsel > 0)
|
|
|
1314 goto connect_failed;
|
|
|
1315 else
|
|
|
1316 break;
|
|
|
1317 }
|
|
|
1318 }
|
|
|
1319
|
|
|
1320 /* We are connected at this point */
|
|
|
1321 *vinfd = (void*)s;
|
|
|
1322 DuplicateHandle (GetCurrentProcess(), (HANDLE)s,
|
|
|
1323 GetCurrentProcess(), (LPHANDLE)voutfd,
|
|
|
1324 0, FALSE, DUPLICATE_SAME_ACCESS);
|
|
|
1325 return;
|
|
|
1326
|
|
|
1327 connect_failed:
|
|
|
1328 closesocket (s);
|
|
442
|
1329 if (INTP (service))
|
|
|
1330 {
|
|
|
1331 warn_when_safe (Qstream, Qwarning,
|
|
|
1332 "failure to open network stream to host \"%s\" for service \"%d\"",
|
|
|
1333 XSTRING_DATA (host),
|
|
|
1334 (unsigned short) XINT (service));
|
|
|
1335 }
|
|
|
1336 else
|
|
|
1337 {
|
|
|
1338 warn_when_safe (Qstream, Qwarning,
|
|
|
1339 "failure to open network stream to host \"%s\" for service \"%s\"",
|
|
|
1340 XSTRING_DATA (host),
|
|
|
1341 XSTRING_DATA (service));
|
|
|
1342 }
|
|
428
|
1343 report_file_error ("connection failed", list2 (host, name));
|
|
|
1344 }
|
|
|
1345
|
|
|
1346 #endif
|
|
|
1347
|
|
|
1348 /*-----------------------------------------------------------------------*/
|
|
|
1349 /* Initialization */
|
|
|
1350 /*-----------------------------------------------------------------------*/
|
|
|
1351
|
|
|
1352 void
|
|
|
1353 process_type_create_nt (void)
|
|
|
1354 {
|
|
|
1355 PROCESS_HAS_METHOD (nt, alloc_process_data);
|
|
|
1356 PROCESS_HAS_METHOD (nt, finalize_process_data);
|
|
|
1357 PROCESS_HAS_METHOD (nt, init_process);
|
|
|
1358 PROCESS_HAS_METHOD (nt, create_process);
|
|
|
1359 PROCESS_HAS_METHOD (nt, update_status_if_terminated);
|
|
|
1360 PROCESS_HAS_METHOD (nt, send_process);
|
|
|
1361 PROCESS_HAS_METHOD (nt, kill_child_process);
|
|
|
1362 PROCESS_HAS_METHOD (nt, kill_process_by_pid);
|
|
|
1363 #ifdef HAVE_SOCKETS
|
|
|
1364 PROCESS_HAS_METHOD (nt, canonicalize_host_name);
|
|
|
1365 PROCESS_HAS_METHOD (nt, open_network_stream);
|
|
|
1366 #ifdef HAVE_MULTICAST
|
|
|
1367 #error I won't do this until '95 has winsock2
|
|
|
1368 PROCESS_HAS_METHOD (nt, open_multicast_group);
|
|
|
1369 #endif
|
|
|
1370 #endif
|
|
|
1371 }
|
|
|
1372
|
|
|
1373 void
|
|
|
1374 syms_of_process_nt (void)
|
|
|
1375 {
|
|
442
|
1376 DEFSYMBOL (Qmswindows_construct_process_command_line);
|
|
428
|
1377 }
|
|
|
1378
|
|
|
1379 void
|
|
|
1380 vars_of_process_nt (void)
|
|
|
1381 {
|
|
442
|
1382 DEFVAR_LISP ("mswindows-start-process-share-console",
|
|
|
1383 &Vmswindows_start_process_share_console /*
|
|
|
1384 When nil, new child processes are given a new console.
|
|
|
1385 When non-nil, they share the Emacs console; this has the limitation of
|
|
|
1386 allowing only only DOS subprocess to run at a time (whether started directly
|
|
|
1387 or indirectly by Emacs), and preventing Emacs from cleanly terminating the
|
|
|
1388 subprocess group, but may allow Emacs to interrupt a subprocess that doesn't
|
|
|
1389 otherwise respond to interrupts from Emacs.
|
|
|
1390 */ );
|
|
|
1391 Vmswindows_start_process_share_console = Qnil;
|
|
|
1392
|
|
|
1393 DEFVAR_LISP ("mswindows-start-process-inherit-error-mode",
|
|
|
1394 &Vmswindows_start_process_inherit_error_mode /*
|
|
|
1395 "When nil, new child processes revert to the default error mode.
|
|
|
1396 When non-nil, they inherit their error mode setting from Emacs, which stops
|
|
|
1397 them blocking when trying to access unmounted drives etc.
|
|
|
1398 */ );
|
|
|
1399 Vmswindows_start_process_inherit_error_mode = Qt;
|
|
428
|
1400 }
|
