|
100
|
1 /* Process support for Windows NT port of XEMACS.
|
|
|
2 Copyright (C) 1992, 1995 Free Software Foundation, Inc.
|
|
|
3
|
|
|
4 This file is part of XEmacs.
|
|
|
5
|
|
|
6 XEmacs is free software; you can redistribute it and/or modify it
|
|
|
7 under the terms of the GNU General Public License as published by the
|
|
|
8 Free Software Foundation; either version 2, or (at your option) any
|
|
|
9 later version.
|
|
|
10
|
|
|
11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
|
|
|
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
|
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
|
14 for more details.
|
|
|
15
|
|
|
16 You should have received a copy of the GNU General Public License
|
|
|
17 along with XEmacs; see the file COPYING. If not, write to
|
|
|
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
|
19 Boston, MA 02111-1307, USA.
|
|
|
20
|
|
|
21 Drew Bliss Oct 14, 1993
|
|
|
22 Adapted from alarm.c by Tim Fleehart */
|
|
|
23
|
|
|
24 /* Adapted for XEmacs by David Hobley <david@spook-le0.cia.com.au> */
|
|
209
|
25 /* Synced with FSF Emacs 19.34.6 by Marc Paquette <marcpa@cam.org> */
|
|
100
|
26
|
|
|
27 #include <stdio.h>
|
|
|
28 #include <stdlib.h>
|
|
|
29 #include <errno.h>
|
|
|
30 #include <io.h>
|
|
|
31 #include <fcntl.h>
|
|
|
32 #include <signal.h>
|
|
|
33
|
|
|
34 /* must include CRT headers *before* config.h */
|
|
398
|
35 /* #### I don't believe it - martin */
|
|
274
|
36 #include <config.h>
|
|
100
|
37 #undef signal
|
|
|
38 #undef wait
|
|
|
39 #undef spawnve
|
|
|
40 #undef select
|
|
|
41 #undef kill
|
|
|
42
|
|
|
43 #include <windows.h>
|
|
239
|
44 #include <sys/socket.h>
|
|
398
|
45 #ifdef HAVE_A_OUT_H
|
|
|
46 #include <a.out.h>
|
|
|
47 #endif
|
|
100
|
48 #include "lisp.h"
|
|
239
|
49 #include "sysproc.h"
|
|
100
|
50 #include "nt.h"
|
|
209
|
51 #include "ntheap.h" /* From 19.34.6 */
|
|
100
|
52 #include "systime.h"
|
|
223
|
53 #include "syssignal.h"
|
|
398
|
54 #include "sysfile.h"
|
|
100
|
55 #include "syswait.h"
|
|
398
|
56 #include "buffer.h"
|
|
100
|
57 #include "process.h"
|
|
404
|
58
|
|
|
59 #include "console-msw.h"
|
|
|
60
|
|
209
|
61 /*#include "w32term.h"*/ /* From 19.34.6: sync in ? --marcpa */
|
|
100
|
62
|
|
288
|
63 /* #### I'm not going to play with shit. */
|
|
|
64 #pragma warning (disable:4013 4024 4090)
|
|
|
65
|
|
100
|
66 /* Control whether spawnve quotes arguments as necessary to ensure
|
|
|
67 correct parsing by child process. Because not all uses of spawnve
|
|
380
|
68 are careful about constructing argv arrays, we make this behavior
|
|
100
|
69 conditional (off by default). */
|
|
|
70 Lisp_Object Vwin32_quote_process_args;
|
|
|
71
|
|
209
|
72 /* Control whether create_child causes the process' window to be
|
|
|
73 hidden. The default is nil. */
|
|
|
74 Lisp_Object Vwin32_start_process_show_window;
|
|
|
75
|
|
|
76 /* Control whether create_child causes the process to inherit Emacs'
|
|
|
77 console window, or be given a new one of its own. The default is
|
|
|
78 nil, to allow multiple DOS programs to run on Win95. Having separate
|
|
|
79 consoles also allows Emacs to cleanly terminate process groups. */
|
|
|
80 Lisp_Object Vwin32_start_process_share_console;
|
|
|
81
|
|
100
|
82 /* Time to sleep before reading from a subprocess output pipe - this
|
|
|
83 avoids the inefficiency of frequently reading small amounts of data.
|
|
|
84 This is primarily necessary for handling DOS processes on Windows 95,
|
|
|
85 but is useful for Win32 processes on both Win95 and NT as well. */
|
|
|
86 Lisp_Object Vwin32_pipe_read_delay;
|
|
|
87
|
|
209
|
88 /* Control whether stat() attempts to generate fake but hopefully
|
|
|
89 "accurate" inode values, by hashing the absolute truenames of files.
|
|
|
90 This should detect aliasing between long and short names, but still
|
|
|
91 allows the possibility of hash collisions. */
|
|
|
92 Lisp_Object Vwin32_generate_fake_inodes;
|
|
|
93
|
|
|
94 Lisp_Object Qhigh, Qlow;
|
|
100
|
95
|
|
398
|
96 extern Lisp_Object Vlisp_EXEC_SUFFIXES;
|
|
|
97
|
|
239
|
98 #ifndef DEBUG_XEMACS
|
|
|
99 __inline
|
|
100
|
100 #endif
|
|
|
101 void _DebPrint (const char *fmt, ...)
|
|
|
102 {
|
|
239
|
103 #ifdef DEBUG_XEMACS
|
|
100
|
104 char buf[1024];
|
|
|
105 va_list args;
|
|
|
106
|
|
|
107 va_start (args, fmt);
|
|
|
108 vsprintf (buf, fmt, args);
|
|
|
109 va_end (args);
|
|
|
110 OutputDebugString (buf);
|
|
239
|
111 #endif
|
|
100
|
112 }
|
|
|
113
|
|
223
|
114 /* sys_signal moved to nt.c. It's now called msw_signal... */
|
|
100
|
115
|
|
|
116 /* Defined in <process.h> which conflicts with the local copy */
|
|
|
117 #define _P_NOWAIT 1
|
|
|
118
|
|
|
119 /* Child process management list. */
|
|
|
120 int child_proc_count = 0;
|
|
|
121 child_process child_procs[ MAX_CHILDREN ];
|
|
|
122 child_process *dead_child = NULL;
|
|
|
123
|
|
|
124 DWORD WINAPI reader_thread (void *arg);
|
|
|
125
|
|
|
126 /* Find an unused process slot. */
|
|
|
127 child_process *
|
|
|
128 new_child (void)
|
|
|
129 {
|
|
|
130 child_process *cp;
|
|
|
131 DWORD id;
|
|
|
132
|
|
|
133 for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--)
|
|
|
134 if (!CHILD_ACTIVE (cp))
|
|
272
|
135 goto Initialize;
|
|
100
|
136 if (child_proc_count == MAX_CHILDREN)
|
|
|
137 return NULL;
|
|
|
138 cp = &child_procs[child_proc_count++];
|
|
|
139
|
|
272
|
140 Initialize:
|
|
|
141 xzero (*cp);
|
|
100
|
142 cp->fd = -1;
|
|
|
143 cp->pid = -1;
|
|
373
|
144 if (cp->procinfo.hProcess)
|
|
|
145 CloseHandle(cp->procinfo.hProcess);
|
|
100
|
146 cp->procinfo.hProcess = NULL;
|
|
|
147 cp->status = STATUS_READ_ERROR;
|
|
|
148
|
|
|
149 /* use manual reset event so that select() will function properly */
|
|
|
150 cp->char_avail = CreateEvent (NULL, TRUE, FALSE, NULL);
|
|
|
151 if (cp->char_avail)
|
|
|
152 {
|
|
|
153 cp->char_consumed = CreateEvent (NULL, FALSE, FALSE, NULL);
|
|
|
154 if (cp->char_consumed)
|
|
|
155 {
|
|
|
156 cp->thrd = CreateThread (NULL, 1024, reader_thread, cp, 0, &id);
|
|
|
157 if (cp->thrd)
|
|
|
158 return cp;
|
|
|
159 }
|
|
|
160 }
|
|
|
161 delete_child (cp);
|
|
|
162 return NULL;
|
|
|
163 }
|
|
|
164
|
|
|
165 void
|
|
|
166 delete_child (child_process *cp)
|
|
|
167 {
|
|
|
168 int i;
|
|
|
169
|
|
|
170 /* Should not be deleting a child that is still needed. */
|
|
|
171 for (i = 0; i < MAXDESC; i++)
|
|
|
172 if (fd_info[i].cp == cp)
|
|
|
173 abort ();
|
|
|
174
|
|
|
175 if (!CHILD_ACTIVE (cp))
|
|
|
176 return;
|
|
|
177
|
|
|
178 /* reap thread if necessary */
|
|
|
179 if (cp->thrd)
|
|
|
180 {
|
|
|
181 DWORD rc;
|
|
|
182
|
|
|
183 if (GetExitCodeThread (cp->thrd, &rc) && rc == STILL_ACTIVE)
|
|
|
184 {
|
|
|
185 /* let the thread exit cleanly if possible */
|
|
|
186 cp->status = STATUS_READ_ERROR;
|
|
|
187 SetEvent (cp->char_consumed);
|
|
|
188 if (WaitForSingleObject (cp->thrd, 1000) != WAIT_OBJECT_0)
|
|
|
189 {
|
|
|
190 DebPrint (("delete_child.WaitForSingleObject (thread) failed "
|
|
|
191 "with %lu for fd %ld\n", GetLastError (), cp->fd));
|
|
|
192 TerminateThread (cp->thrd, 0);
|
|
|
193 }
|
|
|
194 }
|
|
|
195 CloseHandle (cp->thrd);
|
|
|
196 cp->thrd = NULL;
|
|
|
197 }
|
|
|
198 if (cp->char_avail)
|
|
|
199 {
|
|
|
200 CloseHandle (cp->char_avail);
|
|
|
201 cp->char_avail = NULL;
|
|
|
202 }
|
|
|
203 if (cp->char_consumed)
|
|
|
204 {
|
|
|
205 CloseHandle (cp->char_consumed);
|
|
|
206 cp->char_consumed = NULL;
|
|
|
207 }
|
|
|
208
|
|
|
209 /* update child_proc_count (highest numbered slot in use plus one) */
|
|
|
210 if (cp == child_procs + child_proc_count - 1)
|
|
|
211 {
|
|
|
212 for (i = child_proc_count-1; i >= 0; i--)
|
|
|
213 if (CHILD_ACTIVE (&child_procs[i]))
|
|
|
214 {
|
|
|
215 child_proc_count = i + 1;
|
|
|
216 break;
|
|
|
217 }
|
|
|
218 }
|
|
|
219 if (i < 0)
|
|
|
220 child_proc_count = 0;
|
|
|
221 }
|
|
|
222
|
|
|
223 /* Find a child by pid. */
|
|
|
224 static child_process *
|
|
|
225 find_child_pid (DWORD pid)
|
|
|
226 {
|
|
|
227 child_process *cp;
|
|
|
228
|
|
|
229 for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--)
|
|
|
230 if (CHILD_ACTIVE (cp) && pid == cp->pid)
|
|
|
231 return cp;
|
|
|
232 return NULL;
|
|
|
233 }
|
|
|
234
|
|
398
|
235 /* Function to do blocking read of one byte, needed to implement
|
|
|
236 select. It is only allowed on sockets and pipes. */
|
|
|
237 static int
|
|
|
238 _sys_read_ahead (int fd)
|
|
|
239 {
|
|
|
240 child_process * cp;
|
|
|
241 int rc = 0;
|
|
|
242
|
|
|
243 if (fd < 0 || fd >= MAXDESC)
|
|
|
244 return STATUS_READ_ERROR;
|
|
|
245
|
|
|
246 cp = fd_info[fd].cp;
|
|
|
247
|
|
|
248 if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY)
|
|
|
249 return STATUS_READ_ERROR;
|
|
|
250
|
|
|
251 if ((fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) == 0
|
|
|
252 || (fd_info[fd].flags & FILE_READ) == 0)
|
|
|
253 {
|
|
|
254 /* fd is not a pipe or socket */
|
|
|
255 abort ();
|
|
|
256 }
|
|
|
257
|
|
|
258 cp->status = STATUS_READ_IN_PROGRESS;
|
|
|
259
|
|
|
260 if (fd_info[fd].flags & FILE_PIPE)
|
|
|
261 {
|
|
|
262 rc = _read (fd, &cp->chr, sizeof (char));
|
|
|
263
|
|
|
264 /* Give subprocess time to buffer some more output for us before
|
|
|
265 reporting that input is available; we need this because Win95
|
|
|
266 connects DOS programs to pipes by making the pipe appear to be
|
|
|
267 the normal console stdout - as a result most DOS programs will
|
|
|
268 write to stdout without buffering, ie. one character at a
|
|
|
269 time. Even some Win32 programs do this - "dir" in a command
|
|
|
270 shell on NT is very slow if we don't do this. */
|
|
|
271 if (rc > 0)
|
|
|
272 {
|
|
|
273 int wait = XINT (Vwin32_pipe_read_delay);
|
|
|
274
|
|
|
275 if (wait > 0)
|
|
|
276 Sleep (wait);
|
|
|
277 else if (wait < 0)
|
|
|
278 while (++wait <= 0)
|
|
|
279 /* Yield remainder of our time slice, effectively giving a
|
|
|
280 temporary priority boost to the child process. */
|
|
|
281 Sleep (0);
|
|
|
282 }
|
|
|
283 }
|
|
|
284
|
|
|
285 if (rc == sizeof (char))
|
|
|
286 cp->status = STATUS_READ_SUCCEEDED;
|
|
|
287 else
|
|
|
288 cp->status = STATUS_READ_FAILED;
|
|
|
289
|
|
|
290 return cp->status;
|
|
|
291 }
|
|
100
|
292
|
|
|
293 /* Thread proc for child process and socket reader threads. Each thread
|
|
|
294 is normally blocked until woken by select() to check for input by
|
|
|
295 reading one char. When the read completes, char_avail is signalled
|
|
|
296 to wake up the select emulator and the thread blocks itself again. */
|
|
|
297 DWORD WINAPI
|
|
|
298 reader_thread (void *arg)
|
|
|
299 {
|
|
|
300 child_process *cp;
|
|
|
301
|
|
|
302 /* Our identity */
|
|
|
303 cp = (child_process *)arg;
|
|
|
304
|
|
373
|
305 /* <matts@tibco.com> - I think the test below is wrong - we don't
|
|
|
306 want to wait for someone to signal char_consumed, as we haven't
|
|
|
307 read anything for them to consume yet! */
|
|
|
308
|
|
|
309 /*
|
|
100
|
310 if (cp == NULL ||
|
|
|
311 WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0)
|
|
373
|
312 */
|
|
|
313
|
|
|
314 if (cp == NULL)
|
|
|
315 {
|
|
|
316 return 1;
|
|
|
317 }
|
|
100
|
318
|
|
|
319 for (;;)
|
|
|
320 {
|
|
|
321 int rc;
|
|
|
322
|
|
|
323 rc = _sys_read_ahead (cp->fd);
|
|
|
324
|
|
|
325 /* The name char_avail is a misnomer - it really just means the
|
|
|
326 read-ahead has completed, whether successfully or not. */
|
|
|
327 if (!SetEvent (cp->char_avail))
|
|
|
328 {
|
|
|
329 DebPrint (("reader_thread.SetEvent failed with %lu for fd %ld\n",
|
|
|
330 GetLastError (), cp->fd));
|
|
|
331 return 1;
|
|
|
332 }
|
|
|
333
|
|
|
334 if (rc == STATUS_READ_ERROR)
|
|
373
|
335 {
|
|
|
336 /* We are finished, so clean up handles and set to NULL so
|
|
|
337 that CHILD_ACTIVE will see what is going on */
|
|
|
338 if (cp->char_avail) {
|
|
|
339 CloseHandle (cp->char_avail);
|
|
|
340 cp->char_avail = NULL;
|
|
|
341 }
|
|
|
342 if (cp->thrd) {
|
|
|
343 CloseHandle (cp->thrd);
|
|
|
344 cp->thrd = NULL;
|
|
|
345 }
|
|
|
346 if (cp->char_consumed) {
|
|
|
347 CloseHandle(cp->char_consumed);
|
|
|
348 cp->char_consumed = NULL;
|
|
|
349 }
|
|
|
350 if (cp->procinfo.hProcess)
|
|
|
351 {
|
|
|
352 CloseHandle (cp->procinfo.hProcess);
|
|
|
353 cp->procinfo.hProcess=NULL;
|
|
|
354 }
|
|
|
355 return 1;
|
|
|
356 }
|
|
100
|
357
|
|
|
358 /* If the read died, the child has died so let the thread die */
|
|
|
359 if (rc == STATUS_READ_FAILED)
|
|
|
360 break;
|
|
|
361
|
|
|
362 /* Wait until our input is acknowledged before reading again */
|
|
|
363 if (WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0)
|
|
|
364 {
|
|
|
365 DebPrint (("reader_thread.WaitForSingleObject failed with "
|
|
|
366 "%lu for fd %ld\n", GetLastError (), cp->fd));
|
|
|
367 break;
|
|
|
368 }
|
|
|
369 }
|
|
373
|
370 /* We are finished, so clean up handles and set to NULL so that
|
|
|
371 CHILD_ACTIVE will see what is going on */
|
|
|
372 if (cp->char_avail) {
|
|
|
373 CloseHandle (cp->char_avail);
|
|
|
374 cp->char_avail = NULL;
|
|
|
375 }
|
|
|
376 if (cp->thrd) {
|
|
|
377 CloseHandle (cp->thrd);
|
|
|
378 cp->thrd = NULL;
|
|
|
379 }
|
|
|
380 if (cp->char_consumed) {
|
|
|
381 CloseHandle(cp->char_consumed);
|
|
|
382 cp->char_consumed = NULL;
|
|
|
383 }
|
|
|
384 if (cp->procinfo.hProcess)
|
|
|
385 {
|
|
|
386 CloseHandle (cp->procinfo.hProcess);
|
|
|
387 cp->procinfo.hProcess=NULL;
|
|
|
388 }
|
|
|
389
|
|
100
|
390 return 0;
|
|
|
391 }
|
|
|
392
|
|
209
|
393 /* To avoid Emacs changing directory, we just record here the directory
|
|
|
394 the new process should start in. This is set just before calling
|
|
|
395 sys_spawnve, and is not generally valid at any other time. */
|
|
288
|
396 static const char * process_dir;
|
|
209
|
397
|
|
100
|
398 static BOOL
|
|
398
|
399 create_child (const char *exe, char *cmdline, char *env,
|
|
100
|
400 int * pPid, child_process *cp)
|
|
|
401 {
|
|
|
402 STARTUPINFO start;
|
|
|
403 SECURITY_ATTRIBUTES sec_attrs;
|
|
|
404 SECURITY_DESCRIPTOR sec_desc;
|
|
209
|
405 char dir[ MAXPATHLEN ];
|
|
100
|
406
|
|
|
407 if (cp == NULL) abort ();
|
|
|
408
|
|
272
|
409 xzero (start);
|
|
100
|
410 start.cb = sizeof (start);
|
|
|
411
|
|
|
412 #ifdef HAVE_NTGUI
|
|
209
|
413 if (NILP (Vwin32_start_process_show_window))
|
|
100
|
414 start.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
|
|
209
|
415 else
|
|
|
416 start.dwFlags = STARTF_USESTDHANDLES;
|
|
100
|
417 start.wShowWindow = SW_HIDE;
|
|
|
418
|
|
|
419 start.hStdInput = GetStdHandle (STD_INPUT_HANDLE);
|
|
|
420 start.hStdOutput = GetStdHandle (STD_OUTPUT_HANDLE);
|
|
|
421 start.hStdError = GetStdHandle (STD_ERROR_HANDLE);
|
|
|
422 #endif /* HAVE_NTGUI */
|
|
|
423
|
|
|
424 /* Explicitly specify no security */
|
|
|
425 if (!InitializeSecurityDescriptor (&sec_desc, SECURITY_DESCRIPTOR_REVISION))
|
|
|
426 goto EH_Fail;
|
|
|
427 if (!SetSecurityDescriptorDacl (&sec_desc, TRUE, NULL, FALSE))
|
|
|
428 goto EH_Fail;
|
|
|
429 sec_attrs.nLength = sizeof (sec_attrs);
|
|
|
430 sec_attrs.lpSecurityDescriptor = &sec_desc;
|
|
|
431 sec_attrs.bInheritHandle = FALSE;
|
|
|
432
|
|
209
|
433 strcpy (dir, process_dir);
|
|
|
434 unixtodos_filename (dir);
|
|
|
435
|
|
100
|
436 if (!CreateProcess (exe, cmdline, &sec_attrs, NULL, TRUE,
|
|
209
|
437 (!NILP (Vwin32_start_process_share_console)
|
|
|
438 ? CREATE_NEW_PROCESS_GROUP
|
|
|
439 : CREATE_NEW_CONSOLE),
|
|
|
440 env, dir,
|
|
100
|
441 &start, &cp->procinfo))
|
|
|
442 goto EH_Fail;
|
|
|
443
|
|
|
444 cp->pid = (int) cp->procinfo.dwProcessId;
|
|
|
445
|
|
373
|
446 CloseHandle (cp->procinfo.hThread);
|
|
|
447 CloseHandle (cp->procinfo.hProcess);
|
|
|
448 cp->procinfo.hThread=NULL;
|
|
|
449 cp->procinfo.hProcess=NULL;
|
|
|
450
|
|
398
|
451 /* pid must fit in a Lisp_Int */
|
|
308
|
452
|
|
100
|
453
|
|
|
454 *pPid = cp->pid;
|
|
|
455
|
|
|
456 return TRUE;
|
|
|
457
|
|
|
458 EH_Fail:
|
|
|
459 DebPrint (("create_child.CreateProcess failed: %ld\n", GetLastError()););
|
|
|
460 return FALSE;
|
|
|
461 }
|
|
|
462
|
|
398
|
463 #ifndef __MINGW32__
|
|
|
464 /* Return pointer to section header for section containing the given
|
|
|
465 relative virtual address. */
|
|
|
466 static IMAGE_SECTION_HEADER *
|
|
|
467 rva_to_section (DWORD rva, IMAGE_NT_HEADERS * nt_header)
|
|
|
468 {
|
|
|
469 PIMAGE_SECTION_HEADER section;
|
|
|
470 int i;
|
|
|
471
|
|
|
472 section = IMAGE_FIRST_SECTION (nt_header);
|
|
|
473
|
|
|
474 for (i = 0; i < nt_header->FileHeader.NumberOfSections; i++)
|
|
|
475 {
|
|
|
476 if (rva >= section->VirtualAddress
|
|
|
477 && rva < section->VirtualAddress + section->SizeOfRawData)
|
|
|
478 return section;
|
|
|
479 section++;
|
|
|
480 }
|
|
|
481 return NULL;
|
|
|
482 }
|
|
|
483 #endif
|
|
|
484
|
|
209
|
485 void
|
|
398
|
486 win32_executable_type (const char * filename, int * is_dos_app, int * is_cygnus_app)
|
|
100
|
487 {
|
|
209
|
488 file_data executable;
|
|
|
489 char * p;
|
|
100
|
490
|
|
209
|
491 /* Default values in case we can't tell for sure. */
|
|
|
492 *is_dos_app = FALSE;
|
|
|
493 *is_cygnus_app = FALSE;
|
|
|
494
|
|
|
495 if (!open_input_file (&executable, filename))
|
|
|
496 return;
|
|
|
497
|
|
|
498 p = strrchr (filename, '.');
|
|
100
|
499
|
|
|
500 /* We can only identify DOS .com programs from the extension. */
|
|
|
501 if (p && stricmp (p, ".com") == 0)
|
|
209
|
502 *is_dos_app = TRUE;
|
|
|
503 else if (p && (stricmp (p, ".bat") == 0 ||
|
|
|
504 stricmp (p, ".cmd") == 0))
|
|
|
505 {
|
|
|
506 /* A DOS shell script - it appears that CreateProcess is happy to
|
|
|
507 accept this (somewhat surprisingly); presumably it looks at
|
|
|
508 COMSPEC to determine what executable to actually invoke.
|
|
100
|
509 Therefore, we have to do the same here as well. */
|
|
209
|
510 /* Actually, I think it uses the program association for that
|
|
|
511 extension, which is defined in the registry. */
|
|
|
512 p = egetenv ("COMSPEC");
|
|
398
|
513 if (p)
|
|
209
|
514 win32_executable_type (p, is_dos_app, is_cygnus_app);
|
|
398
|
515 }
|
|
100
|
516 else
|
|
|
517 {
|
|
209
|
518 /* Look for DOS .exe signature - if found, we must also check that
|
|
|
519 it isn't really a 16- or 32-bit Windows exe, since both formats
|
|
|
520 start with a DOS program stub. Note that 16-bit Windows
|
|
|
521 executables use the OS/2 1.x format. */
|
|
|
522
|
|
398
|
523 #ifdef __MINGW32__
|
|
|
524 /* mingw32 doesn't have enough headers to detect cygwin
|
|
|
525 apps, just do what we can. */
|
|
|
526 FILHDR * exe_header;
|
|
|
527
|
|
|
528 exe_header = (FILHDR*) executable.file_base;
|
|
|
529 if (exe_header->e_magic != DOSMAGIC)
|
|
|
530 goto unwind;
|
|
209
|
531
|
|
400
|
532 if ((char*) exe_header->e_lfanew > (char*) executable.size)
|
|
398
|
533 {
|
|
|
534 /* Some dos headers (pkunzip) have bogus e_lfanew fields. */
|
|
|
535 *is_dos_app = TRUE;
|
|
|
536 }
|
|
|
537 else if (exe_header->nt_signature != NT_SIGNATURE)
|
|
|
538 {
|
|
|
539 *is_dos_app = TRUE;
|
|
|
540 }
|
|
|
541 #else
|
|
|
542 IMAGE_DOS_HEADER * dos_header;
|
|
|
543 IMAGE_NT_HEADERS * nt_header;
|
|
209
|
544
|
|
398
|
545 dos_header = (PIMAGE_DOS_HEADER) executable.file_base;
|
|
|
546 if (dos_header->e_magic != IMAGE_DOS_SIGNATURE)
|
|
|
547 goto unwind;
|
|
|
548
|
|
400
|
549 nt_header = (PIMAGE_NT_HEADERS) ((char*) dos_header + dos_header->e_lfanew);
|
|
398
|
550
|
|
400
|
551 if ((char*) nt_header > (char*) dos_header + executable.size)
|
|
398
|
552 {
|
|
|
553 /* Some dos headers (pkunzip) have bogus e_lfanew fields. */
|
|
|
554 *is_dos_app = TRUE;
|
|
|
555 }
|
|
|
556 else if (nt_header->Signature != IMAGE_NT_SIGNATURE &&
|
|
|
557 LOWORD (nt_header->Signature) != IMAGE_OS2_SIGNATURE)
|
|
|
558 {
|
|
|
559 *is_dos_app = TRUE;
|
|
|
560 }
|
|
|
561 else if (nt_header->Signature == IMAGE_NT_SIGNATURE)
|
|
|
562 {
|
|
|
563 /* Look for cygwin.dll in DLL import list. */
|
|
|
564 IMAGE_DATA_DIRECTORY import_dir =
|
|
|
565 nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT];
|
|
|
566 IMAGE_IMPORT_DESCRIPTOR * imports;
|
|
|
567 IMAGE_SECTION_HEADER * section;
|
|
209
|
568
|
|
398
|
569 section = rva_to_section (import_dir.VirtualAddress, nt_header);
|
|
400
|
570 imports = (IMAGE_IMPORT_DESCRIPTOR *) RVA_TO_PTR (import_dir.VirtualAddress,
|
|
|
571 section, executable);
|
|
398
|
572
|
|
|
573 for ( ; imports->Name; imports++)
|
|
|
574 {
|
|
400
|
575 char *dllname = (char*) RVA_TO_PTR (imports->Name, section, executable);
|
|
209
|
576
|
|
398
|
577 if (strcmp (dllname, "cygwin.dll") == 0)
|
|
|
578 {
|
|
|
579 *is_cygnus_app = TRUE;
|
|
|
580 break;
|
|
|
581 }
|
|
209
|
582 }
|
|
100
|
583 }
|
|
398
|
584 #endif
|
|
100
|
585 }
|
|
209
|
586
|
|
398
|
587 unwind:
|
|
|
588 close_file_data (&executable);
|
|
209
|
589 }
|
|
|
590
|
|
|
591 int
|
|
398
|
592 compare_env (const void *strp1, const void *strp2)
|
|
209
|
593 {
|
|
398
|
594 const char *str1 = *(const char**)strp1, *str2 = *(const char**)strp2;
|
|
209
|
595
|
|
|
596 while (*str1 && *str2 && *str1 != '=' && *str2 != '=')
|
|
|
597 {
|
|
|
598 if ((*str1) > (*str2))
|
|
|
599 return 1;
|
|
|
600 else if ((*str1) < (*str2))
|
|
|
601 return -1;
|
|
|
602 str1++, str2++;
|
|
100
|
603 }
|
|
|
604
|
|
209
|
605 if (*str1 == '=' && *str2 == '=')
|
|
|
606 return 0;
|
|
|
607 else if (*str1 == '=')
|
|
|
608 return -1;
|
|
|
609 else
|
|
|
610 return 1;
|
|
100
|
611 }
|
|
|
612
|
|
209
|
613 void
|
|
|
614 merge_and_sort_env (char **envp1, char **envp2, char **new_envp)
|
|
|
615 {
|
|
|
616 char **optr, **nptr;
|
|
|
617 int num;
|
|
|
618
|
|
|
619 nptr = new_envp;
|
|
|
620 optr = envp1;
|
|
|
621 while (*optr)
|
|
|
622 *nptr++ = *optr++;
|
|
|
623 num = optr - envp1;
|
|
|
624
|
|
|
625 optr = envp2;
|
|
|
626 while (*optr)
|
|
|
627 *nptr++ = *optr++;
|
|
|
628 num += optr - envp2;
|
|
|
629
|
|
400
|
630 qsort (new_envp, num, sizeof (char*), compare_env);
|
|
209
|
631
|
|
|
632 *nptr = NULL;
|
|
|
633 }
|
|
100
|
634
|
|
|
635 /* When a new child process is created we need to register it in our list,
|
|
|
636 so intercept spawn requests. */
|
|
|
637 int
|
|
398
|
638 sys_spawnve (int mode, const char *cmdname,
|
|
|
639 const char * const *argv, const char *const *envp)
|
|
100
|
640 {
|
|
|
641 Lisp_Object program, full;
|
|
|
642 char *cmdline, *env, *parg, **targ;
|
|
209
|
643 int arglen, numenv;
|
|
100
|
644 int pid;
|
|
|
645 child_process *cp;
|
|
209
|
646 int is_dos_app, is_cygnus_app;
|
|
|
647 int do_quoting = 0;
|
|
398
|
648 char escape_char = 0;
|
|
209
|
649 /* We pass our process ID to our children by setting up an environment
|
|
|
650 variable in their environment. */
|
|
|
651 char ppid_env_var_buffer[64];
|
|
|
652 char *extra_env[] = {ppid_env_var_buffer, NULL};
|
|
124
|
653 struct gcpro gcpro1;
|
|
|
654
|
|
100
|
655 /* We don't care about the other modes */
|
|
|
656 if (mode != _P_NOWAIT)
|
|
|
657 {
|
|
|
658 errno = EINVAL;
|
|
|
659 return -1;
|
|
|
660 }
|
|
|
661
|
|
|
662 /* Handle executable names without an executable suffix. */
|
|
|
663 program = make_string (cmdname, strlen (cmdname));
|
|
124
|
664 GCPRO1 (program);
|
|
100
|
665 if (NILP (Ffile_executable_p (program)))
|
|
|
666 {
|
|
|
667 full = Qnil;
|
|
398
|
668 locate_file (Vexec_path, program, Vlisp_EXEC_SUFFIXES, &full, 1);
|
|
100
|
669 if (NILP (full))
|
|
|
670 {
|
|
124
|
671 UNGCPRO;
|
|
100
|
672 errno = EINVAL;
|
|
|
673 return -1;
|
|
|
674 }
|
|
398
|
675 TO_EXTERNAL_FORMAT (LISP_STRING, full,
|
|
|
676 C_STRING_ALLOCA, cmdname,
|
|
|
677 Qfile_name);
|
|
|
678 }
|
|
|
679 else
|
|
|
680 {
|
|
400
|
681 cmdname = (char*)alloca (strlen (argv[0]) + 1);
|
|
398
|
682 strcpy ((char*)cmdname, argv[0]);
|
|
100
|
683 }
|
|
124
|
684 UNGCPRO;
|
|
|
685
|
|
209
|
686 /* make sure argv[0] and cmdname are both in DOS format */
|
|
398
|
687 unixtodos_filename ((char*)cmdname);
|
|
239
|
688 /* #### KLUDGE */
|
|
398
|
689 ((const char**)argv)[0] = cmdname;
|
|
100
|
690
|
|
209
|
691 /* Determine whether program is a 16-bit DOS executable, or a Win32
|
|
|
692 executable that is implicitly linked to the Cygnus dll (implying it
|
|
|
693 was compiled with the Cygnus GNU toolchain and hence relies on
|
|
|
694 cygwin.dll to parse the command line - we use this to decide how to
|
|
|
695 escape quote chars in command line args that must be quoted). */
|
|
|
696 win32_executable_type (cmdname, &is_dos_app, &is_cygnus_app);
|
|
|
697
|
|
|
698 /* On Windows 95, if cmdname is a DOS app, we invoke a helper
|
|
|
699 application to start it by specifying the helper app as cmdname,
|
|
|
700 while leaving the real app name as argv[0]. */
|
|
|
701 if (is_dos_app)
|
|
100
|
702 {
|
|
400
|
703 cmdname = (char*) alloca (MAXPATHLEN);
|
|
209
|
704 if (egetenv ("CMDPROXY"))
|
|
398
|
705 strcpy ((char*)cmdname, egetenv ("CMDPROXY"));
|
|
209
|
706 else
|
|
|
707 {
|
|
398
|
708 strcpy ((char*)cmdname, XSTRING_DATA (Vinvocation_directory));
|
|
|
709 strcat ((char*)cmdname, "cmdproxy.exe");
|
|
209
|
710 }
|
|
398
|
711 unixtodos_filename ((char*)cmdname);
|
|
100
|
712 }
|
|
|
713
|
|
|
714 /* we have to do some conjuring here to put argv and envp into the
|
|
|
715 form CreateProcess wants... argv needs to be a space separated/null
|
|
|
716 terminated list of parameters, and envp is a null
|
|
|
717 separated/double-null terminated list of parameters.
|
|
|
718
|
|
209
|
719 Additionally, zero-length args and args containing whitespace or
|
|
|
720 quote chars need to be wrapped in double quotes - for this to work,
|
|
|
721 embedded quotes need to be escaped as well. The aim is to ensure
|
|
|
722 the child process reconstructs the argv array we start with
|
|
|
723 exactly, so we treat quotes at the beginning and end of arguments
|
|
|
724 as embedded quotes.
|
|
|
725
|
|
|
726 The Win32 GNU-based library from Cygnus doubles quotes to escape
|
|
|
727 them, while MSVC uses backslash for escaping. (Actually the MSVC
|
|
380
|
728 startup code does attempt to recognize doubled quotes and accept
|
|
209
|
729 them, but gets it wrong and ends up requiring three quotes to get a
|
|
|
730 single embedded quote!) So by default we decide whether to use
|
|
|
731 quote or backslash as the escape character based on whether the
|
|
|
732 binary is apparently a Cygnus compiled app.
|
|
|
733
|
|
|
734 Note that using backslash to escape embedded quotes requires
|
|
|
735 additional special handling if an embedded quote is already
|
|
380
|
736 preceded by backslash, or if an arg requiring quoting ends with
|
|
209
|
737 backslash. In such cases, the run of escape characters needs to be
|
|
|
738 doubled. For consistency, we apply this special handling as long
|
|
|
739 as the escape character is not quote.
|
|
100
|
740
|
|
209
|
741 Since we have no idea how large argv and envp are likely to be we
|
|
|
742 figure out list lengths on the fly and allocate them. */
|
|
|
743
|
|
|
744 if (!NILP (Vwin32_quote_process_args))
|
|
|
745 {
|
|
|
746 do_quoting = 1;
|
|
|
747 /* Override escape char by binding win32-quote-process-args to
|
|
|
748 desired character, or use t for auto-selection. */
|
|
|
749 if (INTP (Vwin32_quote_process_args))
|
|
404
|
750 escape_char = (char) XINT (Vwin32_quote_process_args);
|
|
209
|
751 else
|
|
|
752 escape_char = is_cygnus_app ? '"' : '\\';
|
|
|
753 }
|
|
100
|
754
|
|
|
755 /* do argv... */
|
|
|
756 arglen = 0;
|
|
398
|
757 targ = (char**)argv;
|
|
100
|
758 while (*targ)
|
|
|
759 {
|
|
|
760 char * p = *targ;
|
|
209
|
761 int need_quotes = 0;
|
|
|
762 int escape_char_run = 0;
|
|
100
|
763
|
|
|
764 if (*p == 0)
|
|
209
|
765 need_quotes = 1;
|
|
|
766 for ( ; *p; p++)
|
|
|
767 {
|
|
|
768 if (*p == '"')
|
|
100
|
769 {
|
|
209
|
770 /* allow for embedded quotes to be escaped */
|
|
100
|
771 arglen++;
|
|
209
|
772 need_quotes = 1;
|
|
|
773 /* handle the case where the embedded quote is already escaped */
|
|
|
774 if (escape_char_run > 0)
|
|
|
775 {
|
|
|
776 /* To preserve the arg exactly, we need to double the
|
|
|
777 preceding escape characters (plus adding one to
|
|
|
778 escape the quote character itself). */
|
|
|
779 arglen += escape_char_run;
|
|
100
|
780 }
|
|
209
|
781 }
|
|
100
|
782 else if (*p == ' ' || *p == '\t')
|
|
209
|
783 {
|
|
|
784 need_quotes = 1;
|
|
|
785 }
|
|
|
786
|
|
|
787 if (*p == escape_char && escape_char != '"')
|
|
|
788 escape_char_run++;
|
|
|
789 else
|
|
|
790 escape_char_run = 0;
|
|
|
791 }
|
|
|
792 if (need_quotes)
|
|
|
793 {
|
|
100
|
794 arglen += 2;
|
|
209
|
795 /* handle the case where the arg ends with an escape char - we
|
|
|
796 must not let the enclosing quote be escaped. */
|
|
|
797 if (escape_char_run > 0)
|
|
|
798 arglen += escape_char_run;
|
|
|
799 }
|
|
100
|
800 arglen += strlen (*targ++) + 1;
|
|
|
801 }
|
|
400
|
802 cmdline = (char*) alloca (arglen);
|
|
398
|
803 targ = (char**)argv;
|
|
100
|
804 parg = cmdline;
|
|
|
805 while (*targ)
|
|
|
806 {
|
|
|
807 char * p = *targ;
|
|
209
|
808 int need_quotes = 0;
|
|
100
|
809
|
|
|
810 if (*p == 0)
|
|
209
|
811 need_quotes = 1;
|
|
100
|
812
|
|
209
|
813 if (do_quoting)
|
|
100
|
814 {
|
|
|
815 for ( ; *p; p++)
|
|
|
816 if (*p == ' ' || *p == '\t' || *p == '"')
|
|
209
|
817 need_quotes = 1;
|
|
100
|
818 }
|
|
209
|
819 if (need_quotes)
|
|
100
|
820 {
|
|
209
|
821 int escape_char_run = 0;
|
|
100
|
822 char * first;
|
|
|
823 char * last;
|
|
|
824
|
|
|
825 p = *targ;
|
|
|
826 first = p;
|
|
|
827 last = p + strlen (p) - 1;
|
|
|
828 *parg++ = '"';
|
|
209
|
829 #if 0
|
|
|
830 /* This version does not escape quotes if they occur at the
|
|
|
831 beginning or end of the arg - this could lead to incorrect
|
|
380
|
832 behavior when the arg itself represents a command line
|
|
209
|
833 containing quoted args. I believe this was originally done
|
|
|
834 as a hack to make some things work, before
|
|
|
835 `win32-quote-process-args' was added. */
|
|
100
|
836 while (*p)
|
|
|
837 {
|
|
|
838 if (*p == '"' && p > first && p < last)
|
|
209
|
839 *parg++ = escape_char; /* escape embedded quotes */
|
|
100
|
840 *parg++ = *p++;
|
|
|
841 }
|
|
209
|
842 #else
|
|
|
843 for ( ; *p; p++)
|
|
|
844 {
|
|
|
845 if (*p == '"')
|
|
|
846 {
|
|
|
847 /* double preceding escape chars if any */
|
|
|
848 while (escape_char_run > 0)
|
|
|
849 {
|
|
|
850 *parg++ = escape_char;
|
|
|
851 escape_char_run--;
|
|
|
852 }
|
|
|
853 /* escape all quote chars, even at beginning or end */
|
|
|
854 *parg++ = escape_char;
|
|
|
855 }
|
|
|
856 *parg++ = *p;
|
|
|
857
|
|
|
858 if (*p == escape_char && escape_char != '"')
|
|
|
859 escape_char_run++;
|
|
|
860 else
|
|
|
861 escape_char_run = 0;
|
|
|
862 }
|
|
|
863 /* double escape chars before enclosing quote */
|
|
|
864 while (escape_char_run > 0)
|
|
|
865 {
|
|
|
866 *parg++ = escape_char;
|
|
|
867 escape_char_run--;
|
|
|
868 }
|
|
|
869 #endif
|
|
100
|
870 *parg++ = '"';
|
|
|
871 }
|
|
|
872 else
|
|
|
873 {
|
|
|
874 strcpy (parg, *targ);
|
|
|
875 parg += strlen (*targ);
|
|
|
876 }
|
|
|
877 *parg++ = ' ';
|
|
|
878 targ++;
|
|
|
879 }
|
|
|
880 *--parg = '\0';
|
|
|
881
|
|
|
882 /* and envp... */
|
|
|
883 arglen = 1;
|
|
400
|
884 targ = (char**) envp;
|
|
209
|
885 numenv = 1; /* for end null */
|
|
100
|
886 while (*targ)
|
|
|
887 {
|
|
|
888 arglen += strlen (*targ++) + 1;
|
|
209
|
889 numenv++;
|
|
100
|
890 }
|
|
209
|
891 /* extra env vars... */
|
|
100
|
892 sprintf (ppid_env_var_buffer, "__PARENT_PROCESS_ID=%d",
|
|
|
893 GetCurrentProcessId ());
|
|
|
894 arglen += strlen (ppid_env_var_buffer) + 1;
|
|
209
|
895 numenv++;
|
|
100
|
896
|
|
209
|
897 /* merge env passed in and extra env into one, and sort it. */
|
|
400
|
898 targ = (char **) alloca (numenv * sizeof (char*));
|
|
|
899 merge_and_sort_env ((char**) envp, extra_env, targ);
|
|
209
|
900
|
|
|
901 /* concatenate env entries. */
|
|
400
|
902 env = (char*) alloca (arglen);
|
|
100
|
903 parg = env;
|
|
|
904 while (*targ)
|
|
|
905 {
|
|
|
906 strcpy (parg, *targ);
|
|
|
907 parg += strlen (*targ++);
|
|
|
908 *parg++ = '\0';
|
|
|
909 }
|
|
|
910 *parg++ = '\0';
|
|
|
911 *parg = '\0';
|
|
|
912
|
|
|
913 cp = new_child ();
|
|
|
914 if (cp == NULL)
|
|
|
915 {
|
|
|
916 errno = EAGAIN;
|
|
|
917 return -1;
|
|
|
918 }
|
|
|
919
|
|
|
920 /* Now create the process. */
|
|
|
921 if (!create_child (cmdname, cmdline, env, &pid, cp))
|
|
|
922 {
|
|
|
923 delete_child (cp);
|
|
|
924 errno = ENOEXEC;
|
|
|
925 return -1;
|
|
|
926 }
|
|
|
927
|
|
|
928 return pid;
|
|
|
929 }
|
|
|
930
|
|
|
931 /* Substitute for certain kill () operations */
|
|
209
|
932
|
|
|
933 static BOOL CALLBACK
|
|
|
934 find_child_console (HWND hwnd, child_process * cp)
|
|
|
935 {
|
|
|
936 DWORD thread_id;
|
|
|
937 DWORD process_id;
|
|
|
938
|
|
|
939 thread_id = GetWindowThreadProcessId (hwnd, &process_id);
|
|
|
940 if (process_id == cp->procinfo.dwProcessId)
|
|
|
941 {
|
|
|
942 char window_class[32];
|
|
|
943
|
|
|
944 GetClassName (hwnd, window_class, sizeof (window_class));
|
|
|
945 if (strcmp (window_class,
|
|
404
|
946 msw_windows9x_p()
|
|
209
|
947 ? "tty"
|
|
|
948 : "ConsoleWindowClass") == 0)
|
|
|
949 {
|
|
|
950 cp->hwnd = hwnd;
|
|
|
951 return FALSE;
|
|
|
952 }
|
|
|
953 }
|
|
|
954 /* keep looking */
|
|
|
955 return TRUE;
|
|
|
956 }
|
|
|
957
|
|
100
|
958 int
|
|
|
959 sys_kill (int pid, int sig)
|
|
|
960 {
|
|
|
961 child_process *cp;
|
|
|
962 HANDLE proc_hand;
|
|
|
963 int need_to_free = 0;
|
|
|
964 int rc = 0;
|
|
|
965
|
|
|
966 /* Only handle signals that will result in the process dying */
|
|
|
967 if (sig != SIGINT && sig != SIGKILL && sig != SIGQUIT && sig != SIGHUP)
|
|
|
968 {
|
|
|
969 errno = EINVAL;
|
|
|
970 return -1;
|
|
|
971 }
|
|
|
972
|
|
|
973 cp = find_child_pid (pid);
|
|
|
974 if (cp == NULL)
|
|
|
975 {
|
|
|
976 proc_hand = OpenProcess (PROCESS_TERMINATE, 0, pid);
|
|
|
977 if (proc_hand == NULL)
|
|
|
978 {
|
|
|
979 errno = EPERM;
|
|
|
980 return -1;
|
|
|
981 }
|
|
|
982 need_to_free = 1;
|
|
|
983 }
|
|
|
984 else
|
|
|
985 {
|
|
|
986 proc_hand = cp->procinfo.hProcess;
|
|
|
987 pid = cp->procinfo.dwProcessId;
|
|
209
|
988
|
|
|
989 /* Try to locate console window for process. */
|
|
398
|
990 EnumWindows ((WNDENUMPROC)find_child_console, (LPARAM) cp);
|
|
100
|
991 }
|
|
|
992
|
|
|
993 if (sig == SIGINT)
|
|
|
994 {
|
|
209
|
995 if (NILP (Vwin32_start_process_share_console) && cp && cp->hwnd)
|
|
|
996 {
|
|
|
997 BYTE control_scan_code = (BYTE) MapVirtualKey (VK_CONTROL, 0);
|
|
|
998 BYTE vk_break_code = VK_CANCEL;
|
|
|
999 BYTE break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0);
|
|
|
1000 HWND foreground_window;
|
|
|
1001
|
|
|
1002 if (break_scan_code == 0)
|
|
|
1003 {
|
|
|
1004 /* Fake Ctrl-C if we can't manage Ctrl-Break. */
|
|
|
1005 vk_break_code = 'C';
|
|
|
1006 break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0);
|
|
|
1007 }
|
|
|
1008
|
|
|
1009 foreground_window = GetForegroundWindow ();
|
|
|
1010 if (foreground_window && SetForegroundWindow (cp->hwnd))
|
|
|
1011 {
|
|
|
1012 /* Generate keystrokes as if user had typed Ctrl-Break or Ctrl-C. */
|
|
|
1013 keybd_event (VK_CONTROL, control_scan_code, 0, 0);
|
|
|
1014 keybd_event (vk_break_code, break_scan_code, 0, 0);
|
|
|
1015 keybd_event (vk_break_code, break_scan_code, KEYEVENTF_KEYUP, 0);
|
|
|
1016 keybd_event (VK_CONTROL, control_scan_code, KEYEVENTF_KEYUP, 0);
|
|
|
1017
|
|
|
1018 /* Sleep for a bit to give time for Emacs frame to respond
|
|
|
1019 to focus change events (if Emacs was active app). */
|
|
|
1020 Sleep (10);
|
|
|
1021
|
|
|
1022 SetForegroundWindow (foreground_window);
|
|
|
1023 }
|
|
|
1024 }
|
|
100
|
1025 /* Ctrl-Break is NT equivalent of SIGINT. */
|
|
209
|
1026 else if (!GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, pid))
|
|
100
|
1027 {
|
|
|
1028 DebPrint (("sys_kill.GenerateConsoleCtrlEvent return %d "
|
|
|
1029 "for pid %lu\n", GetLastError (), pid));
|
|
|
1030 errno = EINVAL;
|
|
|
1031 rc = -1;
|
|
|
1032 }
|
|
|
1033 }
|
|
|
1034 else
|
|
|
1035 {
|
|
209
|
1036 if (NILP (Vwin32_start_process_share_console) && cp && cp->hwnd)
|
|
|
1037 {
|
|
|
1038 #if 1
|
|
404
|
1039 if (msw_windows9x_p())
|
|
209
|
1040 {
|
|
|
1041 /*
|
|
|
1042 Another possibility is to try terminating the VDM out-right by
|
|
|
1043 calling the Shell VxD (id 0x17) V86 interface, function #4
|
|
|
1044 "SHELL_Destroy_VM", ie.
|
|
|
1045
|
|
|
1046 mov edx,4
|
|
|
1047 mov ebx,vm_handle
|
|
|
1048 call shellapi
|
|
|
1049
|
|
|
1050 First need to determine the current VM handle, and then arrange for
|
|
|
1051 the shellapi call to be made from the system vm (by using
|
|
|
1052 Switch_VM_and_callback).
|
|
|
1053
|
|
|
1054 Could try to invoke DestroyVM through CallVxD.
|
|
|
1055
|
|
|
1056 */
|
|
|
1057 #if 0
|
|
|
1058 /* On Win95, posting WM_QUIT causes the 16-bit subsystem
|
|
|
1059 to hang when cmdproxy is used in conjunction with
|
|
|
1060 command.com for an interactive shell. Posting
|
|
|
1061 WM_CLOSE pops up a dialog that, when Yes is selected,
|
|
|
1062 does the same thing. TerminateProcess is also less
|
|
|
1063 than ideal in that subprocesses tend to stick around
|
|
|
1064 until the machine is shutdown, but at least it
|
|
|
1065 doesn't freeze the 16-bit subsystem. */
|
|
|
1066 PostMessage (cp->hwnd, WM_QUIT, 0xff, 0);
|
|
|
1067 #endif
|
|
|
1068 if (!TerminateProcess (proc_hand, 0xff))
|
|
|
1069 {
|
|
|
1070 DebPrint (("sys_kill.TerminateProcess returned %d "
|
|
|
1071 "for pid %lu\n", GetLastError (), pid));
|
|
|
1072 errno = EINVAL;
|
|
|
1073 rc = -1;
|
|
|
1074 }
|
|
|
1075 }
|
|
|
1076 else
|
|
|
1077 #endif
|
|
|
1078 PostMessage (cp->hwnd, WM_CLOSE, 0, 0);
|
|
|
1079 }
|
|
100
|
1080 /* Kill the process. On Win32 this doesn't kill child processes
|
|
|
1081 so it doesn't work very well for shells which is why it's not
|
|
209
|
1082 used in every case. */
|
|
|
1083 else if (!TerminateProcess (proc_hand, 0xff))
|
|
100
|
1084 {
|
|
|
1085 DebPrint (("sys_kill.TerminateProcess returned %d "
|
|
|
1086 "for pid %lu\n", GetLastError (), pid));
|
|
|
1087 errno = EINVAL;
|
|
|
1088 rc = -1;
|
|
|
1089 }
|
|
|
1090 }
|
|
|
1091
|
|
|
1092 if (need_to_free)
|
|
|
1093 CloseHandle (proc_hand);
|
|
|
1094
|
|
|
1095 return rc;
|
|
|
1096 }
|
|
|
1097
|
|
|
1098 #if 0
|
|
209
|
1099 /* Sync with FSF Emacs 19.34.6 note: ifdef'ed out in XEmacs */
|
|
398
|
1100 extern int report_file_error (const char *, Lisp_Object);
|
|
100
|
1101 #endif
|
|
|
1102 /* The following two routines are used to manipulate stdin, stdout, and
|
|
|
1103 stderr of our child processes.
|
|
|
1104
|
|
|
1105 Assuming that in, out, and err are *not* inheritable, we make them
|
|
|
1106 stdin, stdout, and stderr of the child as follows:
|
|
|
1107
|
|
|
1108 - Save the parent's current standard handles.
|
|
|
1109 - Set the std handles to inheritable duplicates of the ones being passed in.
|
|
|
1110 (Note that _get_osfhandle() is an io.h procedure that retrieves the
|
|
|
1111 NT file handle for a crt file descriptor.)
|
|
|
1112 - Spawn the child, which inherits in, out, and err as stdin,
|
|
|
1113 stdout, and stderr. (see Spawnve)
|
|
|
1114 - Close the std handles passed to the child.
|
|
|
1115 - Reset the parent's standard handles to the saved handles.
|
|
|
1116 (see reset_standard_handles)
|
|
|
1117 We assume that the caller closes in, out, and err after calling us. */
|
|
|
1118
|
|
|
1119 void
|
|
|
1120 prepare_standard_handles (int in, int out, int err, HANDLE handles[3])
|
|
|
1121 {
|
|
|
1122 HANDLE parent;
|
|
|
1123 HANDLE newstdin, newstdout, newstderr;
|
|
|
1124
|
|
|
1125 parent = GetCurrentProcess ();
|
|
|
1126
|
|
|
1127 handles[0] = GetStdHandle (STD_INPUT_HANDLE);
|
|
|
1128 handles[1] = GetStdHandle (STD_OUTPUT_HANDLE);
|
|
|
1129 handles[2] = GetStdHandle (STD_ERROR_HANDLE);
|
|
|
1130
|
|
|
1131 /* make inheritable copies of the new handles */
|
|
|
1132 if (!DuplicateHandle (parent,
|
|
|
1133 (HANDLE) _get_osfhandle (in),
|
|
|
1134 parent,
|
|
|
1135 &newstdin,
|
|
|
1136 0,
|
|
|
1137 TRUE,
|
|
|
1138 DUPLICATE_SAME_ACCESS))
|
|
|
1139 report_file_error ("Duplicating input handle for child", Qnil);
|
|
|
1140
|
|
|
1141 if (!DuplicateHandle (parent,
|
|
|
1142 (HANDLE) _get_osfhandle (out),
|
|
|
1143 parent,
|
|
|
1144 &newstdout,
|
|
|
1145 0,
|
|
|
1146 TRUE,
|
|
|
1147 DUPLICATE_SAME_ACCESS))
|
|
|
1148 report_file_error ("Duplicating output handle for child", Qnil);
|
|
|
1149
|
|
|
1150 if (!DuplicateHandle (parent,
|
|
|
1151 (HANDLE) _get_osfhandle (err),
|
|
|
1152 parent,
|
|
|
1153 &newstderr,
|
|
|
1154 0,
|
|
|
1155 TRUE,
|
|
|
1156 DUPLICATE_SAME_ACCESS))
|
|
|
1157 report_file_error ("Duplicating error handle for child", Qnil);
|
|
|
1158
|
|
|
1159 /* and store them as our std handles */
|
|
|
1160 if (!SetStdHandle (STD_INPUT_HANDLE, newstdin))
|
|
|
1161 report_file_error ("Changing stdin handle", Qnil);
|
|
|
1162
|
|
|
1163 if (!SetStdHandle (STD_OUTPUT_HANDLE, newstdout))
|
|
|
1164 report_file_error ("Changing stdout handle", Qnil);
|
|
|
1165
|
|
|
1166 if (!SetStdHandle (STD_ERROR_HANDLE, newstderr))
|
|
|
1167 report_file_error ("Changing stderr handle", Qnil);
|
|
|
1168 }
|
|
|
1169
|
|
|
1170 void
|
|
|
1171 reset_standard_handles (int in, int out, int err, HANDLE handles[3])
|
|
|
1172 {
|
|
|
1173 /* close the duplicated handles passed to the child */
|
|
|
1174 CloseHandle (GetStdHandle (STD_INPUT_HANDLE));
|
|
|
1175 CloseHandle (GetStdHandle (STD_OUTPUT_HANDLE));
|
|
|
1176 CloseHandle (GetStdHandle (STD_ERROR_HANDLE));
|
|
|
1177
|
|
|
1178 /* now restore parent's saved std handles */
|
|
|
1179 SetStdHandle (STD_INPUT_HANDLE, handles[0]);
|
|
|
1180 SetStdHandle (STD_OUTPUT_HANDLE, handles[1]);
|
|
|
1181 SetStdHandle (STD_ERROR_HANDLE, handles[2]);
|
|
|
1182 }
|
|
|
1183
|
|
209
|
1184 void
|
|
288
|
1185 set_process_dir (const char * dir)
|
|
209
|
1186 {
|
|
|
1187 process_dir = dir;
|
|
|
1188 }
|
|
100
|
1189
|
|
209
|
1190 /* Some miscellaneous functions that are Windows specific, but not GUI
|
|
|
1191 specific (ie. are applicable in terminal or batch mode as well). */
|
|
|
1192
|
|
|
1193 /* lifted from fileio.c */
|
|
|
1194 #define CORRECT_DIR_SEPS(s) \
|
|
|
1195 do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \
|
|
|
1196 else unixtodos_filename (s); \
|
|
|
1197 } while (0)
|
|
|
1198
|
|
|
1199 DEFUN ("win32-short-file-name", Fwin32_short_file_name, 1, 1, "", /*
|
|
|
1200 Return the short file name version (8.3) of the full path of FILENAME.
|
|
|
1201 If FILENAME does not exist, return nil.
|
|
|
1202 All path elements in FILENAME are converted to their short names.
|
|
|
1203 */
|
|
|
1204 (filename))
|
|
|
1205 {
|
|
|
1206 char shortname[MAX_PATH];
|
|
|
1207
|
|
288
|
1208 CHECK_STRING (filename);
|
|
209
|
1209
|
|
|
1210 /* first expand it. */
|
|
|
1211 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1212
|
|
|
1213 /* luckily, this returns the short version of each element in the path. */
|
|
|
1214 if (GetShortPathName (XSTRING_DATA (filename), shortname, MAX_PATH) == 0)
|
|
|
1215 return Qnil;
|
|
|
1216
|
|
|
1217 CORRECT_DIR_SEPS (shortname);
|
|
|
1218
|
|
|
1219 return build_string (shortname);
|
|
|
1220 }
|
|
|
1221
|
|
|
1222
|
|
|
1223 DEFUN ("win32-long-file-name", Fwin32_long_file_name, 1, 1, "", /*
|
|
|
1224 Return the long file name version of the full path of FILENAME.
|
|
|
1225 If FILENAME does not exist, return nil.
|
|
|
1226 All path elements in FILENAME are converted to their long names.
|
|
|
1227 */
|
|
|
1228 (filename))
|
|
|
1229 {
|
|
|
1230 char longname[ MAX_PATH ];
|
|
|
1231
|
|
288
|
1232 CHECK_STRING (filename);
|
|
209
|
1233
|
|
|
1234 /* first expand it. */
|
|
|
1235 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1236
|
|
|
1237 if (!win32_get_long_filename (XSTRING_DATA (filename), longname, MAX_PATH))
|
|
|
1238 return Qnil;
|
|
|
1239
|
|
|
1240 CORRECT_DIR_SEPS (longname);
|
|
|
1241
|
|
|
1242 return build_string (longname);
|
|
|
1243 }
|
|
|
1244
|
|
|
1245 DEFUN ("win32-set-process-priority", Fwin32_set_process_priority, 2, 2, "", /*
|
|
|
1246 Set the priority of PROCESS to PRIORITY.
|
|
|
1247 If PROCESS is nil, the priority of Emacs is changed, otherwise the
|
|
|
1248 priority of the process whose pid is PROCESS is changed.
|
|
|
1249 PRIORITY should be one of the symbols high, normal, or low;
|
|
|
1250 any other symbol will be interpreted as normal.
|
|
|
1251
|
|
|
1252 If successful, the return value is t, otherwise nil.
|
|
|
1253 */
|
|
|
1254 (process, priority))
|
|
|
1255 {
|
|
|
1256 HANDLE proc_handle = GetCurrentProcess ();
|
|
|
1257 DWORD priority_class = NORMAL_PRIORITY_CLASS;
|
|
|
1258 Lisp_Object result = Qnil;
|
|
|
1259
|
|
288
|
1260 CHECK_SYMBOL (priority);
|
|
209
|
1261
|
|
|
1262 if (!NILP (process))
|
|
|
1263 {
|
|
|
1264 DWORD pid;
|
|
|
1265 child_process *cp;
|
|
|
1266
|
|
|
1267 CHECK_INT (process);
|
|
|
1268
|
|
|
1269 /* Allow pid to be an internally generated one, or one obtained
|
|
|
1270 externally. This is necessary because real pids on Win95 are
|
|
|
1271 negative. */
|
|
|
1272
|
|
|
1273 pid = XINT (process);
|
|
|
1274 cp = find_child_pid (pid);
|
|
|
1275 if (cp != NULL)
|
|
|
1276 pid = cp->procinfo.dwProcessId;
|
|
|
1277
|
|
|
1278 proc_handle = OpenProcess (PROCESS_SET_INFORMATION, FALSE, pid);
|
|
|
1279 }
|
|
|
1280
|
|
|
1281 if (EQ (priority, Qhigh))
|
|
|
1282 priority_class = HIGH_PRIORITY_CLASS;
|
|
|
1283 else if (EQ (priority, Qlow))
|
|
|
1284 priority_class = IDLE_PRIORITY_CLASS;
|
|
|
1285
|
|
|
1286 if (proc_handle != NULL)
|
|
|
1287 {
|
|
|
1288 if (SetPriorityClass (proc_handle, priority_class))
|
|
|
1289 result = Qt;
|
|
|
1290 if (!NILP (process))
|
|
|
1291 CloseHandle (proc_handle);
|
|
|
1292 }
|
|
|
1293
|
|
|
1294 return result;
|
|
|
1295 }
|
|
|
1296
|
|
|
1297
|
|
|
1298 DEFUN ("win32-get-locale-info", Fwin32_get_locale_info, 1, 2, "", /*
|
|
|
1299 "Return information about the Windows locale LCID.
|
|
|
1300 By default, return a three letter locale code which encodes the default
|
|
380
|
1301 language as the first two characters, and the country or regional variant
|
|
209
|
1302 as the third letter. For example, ENU refers to `English (United States)',
|
|
|
1303 while ENC means `English (Canadian)'.
|
|
|
1304
|
|
|
1305 If the optional argument LONGFORM is non-nil, the long form of the locale
|
|
|
1306 name is returned, e.g. `English (United States)' instead.
|
|
|
1307
|
|
|
1308 If LCID (a 16-bit number) is not a valid locale, the result is nil.
|
|
|
1309 */
|
|
|
1310 (lcid, longform))
|
|
|
1311 {
|
|
|
1312 int got_abbrev;
|
|
|
1313 int got_full;
|
|
|
1314 char abbrev_name[32] = { 0 };
|
|
|
1315 char full_name[256] = { 0 };
|
|
|
1316
|
|
|
1317 CHECK_INT (lcid);
|
|
|
1318
|
|
|
1319 if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED))
|
|
|
1320 return Qnil;
|
|
|
1321
|
|
|
1322 if (NILP (longform))
|
|
|
1323 {
|
|
|
1324 got_abbrev = GetLocaleInfo (XINT (lcid),
|
|
|
1325 LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP,
|
|
|
1326 abbrev_name, sizeof (abbrev_name));
|
|
|
1327 if (got_abbrev)
|
|
|
1328 return build_string (abbrev_name);
|
|
|
1329 }
|
|
|
1330 else
|
|
|
1331 {
|
|
|
1332 got_full = GetLocaleInfo (XINT (lcid),
|
|
|
1333 LOCALE_SLANGUAGE | LOCALE_USE_CP_ACP,
|
|
|
1334 full_name, sizeof (full_name));
|
|
|
1335 if (got_full)
|
|
|
1336 return build_string (full_name);
|
|
|
1337 }
|
|
|
1338
|
|
|
1339 return Qnil;
|
|
|
1340 }
|
|
|
1341
|
|
|
1342
|
|
|
1343 DEFUN ("win32-get-current-locale-id", Fwin32_get_current_locale_id, 0, 0, "", /*
|
|
|
1344 "Return Windows locale id for current locale setting.
|
|
|
1345 This is a numerical value; use `win32-get-locale-info' to convert to a
|
|
|
1346 human-readable form.
|
|
|
1347 */
|
|
|
1348 ())
|
|
|
1349 {
|
|
|
1350 return make_int (GetThreadLocale ());
|
|
|
1351 }
|
|
|
1352
|
|
|
1353
|
|
|
1354 DEFUN ("win32-get-default-locale-id", Fwin32_get_default_locale_id, 0, 1, "", /*
|
|
|
1355 "Return Windows locale id for default locale setting.
|
|
|
1356 By default, the system default locale setting is returned; if the optional
|
|
|
1357 parameter USERP is non-nil, the user default locale setting is returned.
|
|
|
1358 This is a numerical value; use `win32-get-locale-info' to convert to a
|
|
|
1359 human-readable form.
|
|
|
1360 */
|
|
|
1361 (userp))
|
|
|
1362 {
|
|
|
1363 if (NILP (userp))
|
|
|
1364 return make_int (GetSystemDefaultLCID ());
|
|
|
1365 return make_int (GetUserDefaultLCID ());
|
|
|
1366 }
|
|
|
1367
|
|
|
1368 DWORD int_from_hex (char * s)
|
|
|
1369 {
|
|
|
1370 DWORD val = 0;
|
|
|
1371 static char hex[] = "0123456789abcdefABCDEF";
|
|
|
1372 char * p;
|
|
|
1373
|
|
|
1374 while (*s && (p = strchr(hex, *s)) != NULL)
|
|
|
1375 {
|
|
|
1376 unsigned digit = p - hex;
|
|
|
1377 if (digit > 15)
|
|
|
1378 digit -= 6;
|
|
|
1379 val = val * 16 + digit;
|
|
|
1380 s++;
|
|
|
1381 }
|
|
|
1382 return val;
|
|
|
1383 }
|
|
|
1384
|
|
|
1385 /* We need to build a global list, since the EnumSystemLocale callback
|
|
|
1386 function isn't given a context pointer. */
|
|
|
1387 Lisp_Object Vwin32_valid_locale_ids;
|
|
|
1388
|
|
|
1389 BOOL CALLBACK enum_locale_fn (LPTSTR localeNum)
|
|
|
1390 {
|
|
|
1391 DWORD id = int_from_hex (localeNum);
|
|
|
1392 Vwin32_valid_locale_ids = Fcons (make_int (id), Vwin32_valid_locale_ids);
|
|
|
1393 return TRUE;
|
|
|
1394 }
|
|
|
1395
|
|
|
1396 DEFUN ("win32-get-valid-locale-ids", Fwin32_get_valid_locale_ids, 0, 0, "", /*
|
|
|
1397 Return list of all valid Windows locale ids.
|
|
|
1398 Each id is a numerical value; use `win32-get-locale-info' to convert to a
|
|
|
1399 human-readable form.
|
|
|
1400 */
|
|
|
1401 ())
|
|
|
1402 {
|
|
|
1403 Vwin32_valid_locale_ids = Qnil;
|
|
|
1404
|
|
|
1405 EnumSystemLocales (enum_locale_fn, LCID_SUPPORTED);
|
|
|
1406
|
|
|
1407 Vwin32_valid_locale_ids = Fnreverse (Vwin32_valid_locale_ids);
|
|
|
1408 return Vwin32_valid_locale_ids;
|
|
|
1409 }
|
|
|
1410
|
|
|
1411
|
|
|
1412 DEFUN ("win32-set-current-locale", Fwin32_set_current_locale, 1, 1, "", /*
|
|
|
1413 Make Windows locale LCID be the current locale setting for Emacs.
|
|
|
1414 If successful, the new locale id is returned, otherwise nil.
|
|
|
1415 */
|
|
|
1416 (lcid))
|
|
|
1417 {
|
|
|
1418 CHECK_INT (lcid);
|
|
|
1419
|
|
|
1420 if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED))
|
|
|
1421 return Qnil;
|
|
|
1422
|
|
|
1423 if (!SetThreadLocale (XINT (lcid)))
|
|
|
1424 return Qnil;
|
|
|
1425
|
|
|
1426 /* Sync with FSF Emacs 19.34.6 note: dwWinThreadId declared in
|
|
|
1427 w32term.h and defined in w32fns.c, both of which are not in current
|
|
398
|
1428 XEmacs. #### Check what we lose by ifdef'ing out these. --marcpa */
|
|
209
|
1429 #if 0
|
|
|
1430 /* Need to set input thread locale if present. */
|
|
|
1431 if (dwWinThreadId)
|
|
|
1432 /* Reply is not needed. */
|
|
|
1433 PostThreadMessage (dwWinThreadId, WM_EMACS_SETLOCALE, XINT (lcid), 0);
|
|
|
1434 #endif
|
|
|
1435
|
|
|
1436 return make_int (GetThreadLocale ());
|
|
|
1437 }
|
|
|
1438
|
|
|
1439
|
|
288
|
1440 void
|
|
404
|
1441 syms_of_ntproc (void)
|
|
100
|
1442 {
|
|
209
|
1443 DEFSUBR (Fwin32_short_file_name);
|
|
|
1444 DEFSUBR (Fwin32_long_file_name);
|
|
|
1445 DEFSUBR (Fwin32_set_process_priority);
|
|
|
1446 DEFSUBR (Fwin32_get_locale_info);
|
|
|
1447 DEFSUBR (Fwin32_get_current_locale_id);
|
|
|
1448 DEFSUBR (Fwin32_get_default_locale_id);
|
|
|
1449 DEFSUBR (Fwin32_get_valid_locale_ids);
|
|
|
1450 DEFSUBR (Fwin32_set_current_locale);
|
|
398
|
1451 }
|
|
|
1452
|
|
|
1453
|
|
|
1454 void
|
|
|
1455 vars_of_ntproc (void)
|
|
|
1456 {
|
|
|
1457 defsymbol (&Qhigh, "high");
|
|
|
1458 defsymbol (&Qlow, "low");
|
|
100
|
1459
|
|
|
1460 DEFVAR_LISP ("win32-quote-process-args", &Vwin32_quote_process_args /*
|
|
209
|
1461 Non-nil enables quoting of process arguments to ensure correct parsing.
|
|
100
|
1462 Because Windows does not directly pass argv arrays to child processes,
|
|
|
1463 programs have to reconstruct the argv array by parsing the command
|
|
|
1464 line string. For an argument to contain a space, it must be enclosed
|
|
|
1465 in double quotes or it will be parsed as multiple arguments.
|
|
|
1466
|
|
209
|
1467 If the value is a character, that character will be used to escape any
|
|
|
1468 quote characters that appear, otherwise a suitable escape character
|
|
|
1469 will be chosen based on the type of the program.
|
|
|
1470 */ );
|
|
|
1471 Vwin32_quote_process_args = Qt;
|
|
|
1472
|
|
|
1473 DEFVAR_LISP ("win32-start-process-show-window",
|
|
|
1474 &Vwin32_start_process_show_window /*
|
|
|
1475 When nil, processes started via start-process hide their windows.
|
|
|
1476 When non-nil, they show their window in the method of their choice.
|
|
|
1477 */ );
|
|
|
1478 Vwin32_start_process_show_window = Qnil;
|
|
|
1479
|
|
|
1480 DEFVAR_LISP ("win32-start-process-share-console",
|
|
|
1481 &Vwin32_start_process_share_console /*
|
|
|
1482 When nil, processes started via start-process are given a new console.
|
|
|
1483 When non-nil, they share the Emacs console; this has the limitation of
|
|
|
1484 allowing only only DOS subprocess to run at a time (whether started directly
|
|
|
1485 or indirectly by Emacs), and preventing Emacs from cleanly terminating the
|
|
|
1486 subprocess group, but may allow Emacs to interrupt a subprocess that doesn't
|
|
|
1487 otherwise respond to interrupts from Emacs.
|
|
|
1488 */ );
|
|
398
|
1489 Vwin32_start_process_share_console = Qt;
|
|
100
|
1490
|
|
282
|
1491 DEFVAR_LISP ("win32-pipe-read-delay", &Vwin32_pipe_read_delay /*
|
|
209
|
1492 Forced delay before reading subprocess output.
|
|
100
|
1493 This is done to improve the buffering of subprocess output, by
|
|
|
1494 avoiding the inefficiency of frequently reading small amounts of data.
|
|
|
1495
|
|
|
1496 If positive, the value is the number of milliseconds to sleep before
|
|
|
1497 reading the subprocess output. If negative, the magnitude is the number
|
|
|
1498 of time slices to wait (effectively boosting the priority of the child
|
|
209
|
1499 process temporarily). A value of zero disables waiting entirely.
|
|
|
1500 */ );
|
|
282
|
1501 Vwin32_pipe_read_delay = make_int (50);
|
|
100
|
1502
|
|
209
|
1503 #if 0
|
|
|
1504 DEFVAR_LISP ("win32-generate-fake-inodes", &Vwin32_generate_fake_inodes /*
|
|
|
1505 "Non-nil means attempt to fake realistic inode values.
|
|
|
1506 This works by hashing the truename of files, and should detect
|
|
|
1507 aliasing between long and short (8.3 DOS) names, but can have
|
|
380
|
1508 false positives because of hash collisions. Note that determining
|
|
209
|
1509 the truename of a file can be slow.
|
|
|
1510 */ );
|
|
|
1511 Vwin32_generate_fake_inodes = Qnil;
|
|
|
1512 #endif
|
|
100
|
1513 }
|
|
398
|
1514
|
|
100
|
1515 /* end of ntproc.c */
|
