|
428
|
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> */
|
|
|
25 /* Synced with FSF Emacs 19.34.6 by Marc Paquette <marcpa@cam.org> */
|
|
|
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 */
|
|
|
35 /* ### I don't believe it - martin */
|
|
|
36 #include <config.h>
|
|
|
37 #undef signal
|
|
|
38 #undef wait
|
|
|
39 #undef spawnve
|
|
|
40 #undef select
|
|
|
41 #undef kill
|
|
|
42
|
|
|
43 #include <windows.h>
|
|
|
44 #include <sys/socket.h>
|
|
|
45 #ifdef HAVE_A_OUT_H
|
|
|
46 #include <a.out.h>
|
|
|
47 #endif
|
|
|
48 #include "lisp.h"
|
|
|
49 #include "sysproc.h"
|
|
|
50 #include "nt.h"
|
|
|
51 #include "ntheap.h" /* From 19.34.6 */
|
|
|
52 #include "systime.h"
|
|
|
53 #include "syssignal.h"
|
|
|
54 #include "sysfile.h"
|
|
|
55 #include "syswait.h"
|
|
|
56 #include "buffer.h"
|
|
|
57 #include "process.h"
|
|
|
58 /*#include "w32term.h"*/ /* From 19.34.6: sync in ? --marcpa */
|
|
|
59
|
|
|
60 /* #### I'm not going to play with shit. */
|
|
|
61 #pragma warning (disable:4013 4024 4090)
|
|
|
62
|
|
|
63 /* Control whether spawnve quotes arguments as necessary to ensure
|
|
|
64 correct parsing by child process. Because not all uses of spawnve
|
|
|
65 are careful about constructing argv arrays, we make this behavior
|
|
|
66 conditional (off by default). */
|
|
|
67 Lisp_Object Vwin32_quote_process_args;
|
|
|
68
|
|
|
69 /* Control whether create_child causes the process' window to be
|
|
|
70 hidden. The default is nil. */
|
|
|
71 Lisp_Object Vwin32_start_process_show_window;
|
|
|
72
|
|
|
73 /* Control whether create_child causes the process to inherit Emacs'
|
|
|
74 console window, or be given a new one of its own. The default is
|
|
|
75 nil, to allow multiple DOS programs to run on Win95. Having separate
|
|
|
76 consoles also allows Emacs to cleanly terminate process groups. */
|
|
|
77 Lisp_Object Vwin32_start_process_share_console;
|
|
|
78
|
|
|
79 /* Time to sleep before reading from a subprocess output pipe - this
|
|
|
80 avoids the inefficiency of frequently reading small amounts of data.
|
|
|
81 This is primarily necessary for handling DOS processes on Windows 95,
|
|
|
82 but is useful for Win32 processes on both Win95 and NT as well. */
|
|
|
83 Lisp_Object Vwin32_pipe_read_delay;
|
|
|
84
|
|
|
85 /* Control whether stat() attempts to generate fake but hopefully
|
|
|
86 "accurate" inode values, by hashing the absolute truenames of files.
|
|
|
87 This should detect aliasing between long and short names, but still
|
|
|
88 allows the possibility of hash collisions. */
|
|
|
89 Lisp_Object Vwin32_generate_fake_inodes;
|
|
|
90
|
|
|
91 Lisp_Object Qhigh, Qlow;
|
|
|
92
|
|
|
93 extern Lisp_Object Vlisp_EXEC_SUFFIXES;
|
|
|
94
|
|
|
95 #ifndef DEBUG_XEMACS
|
|
|
96 __inline
|
|
|
97 #endif
|
|
|
98 void _DebPrint (const char *fmt, ...)
|
|
|
99 {
|
|
|
100 #ifdef DEBUG_XEMACS
|
|
|
101 char buf[1024];
|
|
|
102 va_list args;
|
|
|
103
|
|
|
104 va_start (args, fmt);
|
|
|
105 vsprintf (buf, fmt, args);
|
|
|
106 va_end (args);
|
|
|
107 OutputDebugString (buf);
|
|
|
108 #endif
|
|
|
109 }
|
|
|
110
|
|
|
111 /* sys_signal moved to nt.c. It's now called msw_signal... */
|
|
|
112
|
|
|
113 /* Defined in <process.h> which conflicts with the local copy */
|
|
|
114 #define _P_NOWAIT 1
|
|
|
115
|
|
|
116 /* Child process management list. */
|
|
|
117 int child_proc_count = 0;
|
|
|
118 child_process child_procs[ MAX_CHILDREN ];
|
|
|
119 child_process *dead_child = NULL;
|
|
|
120
|
|
|
121 DWORD WINAPI reader_thread (void *arg);
|
|
|
122
|
|
|
123 /* Find an unused process slot. */
|
|
|
124 child_process *
|
|
|
125 new_child (void)
|
|
|
126 {
|
|
|
127 child_process *cp;
|
|
|
128 DWORD id;
|
|
|
129
|
|
|
130 for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--)
|
|
|
131 if (!CHILD_ACTIVE (cp))
|
|
|
132 goto Initialize;
|
|
|
133 if (child_proc_count == MAX_CHILDREN)
|
|
|
134 return NULL;
|
|
|
135 cp = &child_procs[child_proc_count++];
|
|
|
136
|
|
|
137 Initialize:
|
|
|
138 xzero (*cp);
|
|
|
139 cp->fd = -1;
|
|
|
140 cp->pid = -1;
|
|
|
141 if (cp->procinfo.hProcess)
|
|
|
142 CloseHandle(cp->procinfo.hProcess);
|
|
|
143 cp->procinfo.hProcess = NULL;
|
|
|
144 cp->status = STATUS_READ_ERROR;
|
|
|
145
|
|
|
146 /* use manual reset event so that select() will function properly */
|
|
|
147 cp->char_avail = CreateEvent (NULL, TRUE, FALSE, NULL);
|
|
|
148 if (cp->char_avail)
|
|
|
149 {
|
|
|
150 cp->char_consumed = CreateEvent (NULL, FALSE, FALSE, NULL);
|
|
|
151 if (cp->char_consumed)
|
|
|
152 {
|
|
|
153 cp->thrd = CreateThread (NULL, 1024, reader_thread, cp, 0, &id);
|
|
|
154 if (cp->thrd)
|
|
|
155 return cp;
|
|
|
156 }
|
|
|
157 }
|
|
|
158 delete_child (cp);
|
|
|
159 return NULL;
|
|
|
160 }
|
|
|
161
|
|
|
162 void
|
|
|
163 delete_child (child_process *cp)
|
|
|
164 {
|
|
|
165 int i;
|
|
|
166
|
|
|
167 /* Should not be deleting a child that is still needed. */
|
|
|
168 for (i = 0; i < MAXDESC; i++)
|
|
|
169 if (fd_info[i].cp == cp)
|
|
|
170 abort ();
|
|
|
171
|
|
|
172 if (!CHILD_ACTIVE (cp))
|
|
|
173 return;
|
|
|
174
|
|
|
175 /* reap thread if necessary */
|
|
|
176 if (cp->thrd)
|
|
|
177 {
|
|
|
178 DWORD rc;
|
|
|
179
|
|
|
180 if (GetExitCodeThread (cp->thrd, &rc) && rc == STILL_ACTIVE)
|
|
|
181 {
|
|
|
182 /* let the thread exit cleanly if possible */
|
|
|
183 cp->status = STATUS_READ_ERROR;
|
|
|
184 SetEvent (cp->char_consumed);
|
|
|
185 if (WaitForSingleObject (cp->thrd, 1000) != WAIT_OBJECT_0)
|
|
|
186 {
|
|
|
187 DebPrint (("delete_child.WaitForSingleObject (thread) failed "
|
|
|
188 "with %lu for fd %ld\n", GetLastError (), cp->fd));
|
|
|
189 TerminateThread (cp->thrd, 0);
|
|
|
190 }
|
|
|
191 }
|
|
|
192 CloseHandle (cp->thrd);
|
|
|
193 cp->thrd = NULL;
|
|
|
194 }
|
|
|
195 if (cp->char_avail)
|
|
|
196 {
|
|
|
197 CloseHandle (cp->char_avail);
|
|
|
198 cp->char_avail = NULL;
|
|
|
199 }
|
|
|
200 if (cp->char_consumed)
|
|
|
201 {
|
|
|
202 CloseHandle (cp->char_consumed);
|
|
|
203 cp->char_consumed = NULL;
|
|
|
204 }
|
|
|
205
|
|
|
206 /* update child_proc_count (highest numbered slot in use plus one) */
|
|
|
207 if (cp == child_procs + child_proc_count - 1)
|
|
|
208 {
|
|
|
209 for (i = child_proc_count-1; i >= 0; i--)
|
|
|
210 if (CHILD_ACTIVE (&child_procs[i]))
|
|
|
211 {
|
|
|
212 child_proc_count = i + 1;
|
|
|
213 break;
|
|
|
214 }
|
|
|
215 }
|
|
|
216 if (i < 0)
|
|
|
217 child_proc_count = 0;
|
|
|
218 }
|
|
|
219
|
|
|
220 /* Find a child by pid. */
|
|
|
221 static child_process *
|
|
|
222 find_child_pid (DWORD pid)
|
|
|
223 {
|
|
|
224 child_process *cp;
|
|
|
225
|
|
|
226 for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--)
|
|
|
227 if (CHILD_ACTIVE (cp) && pid == cp->pid)
|
|
|
228 return cp;
|
|
|
229 return NULL;
|
|
|
230 }
|
|
|
231
|
|
|
232 /* Function to do blocking read of one byte, needed to implement
|
|
|
233 select. It is only allowed on sockets and pipes. */
|
|
|
234 static int
|
|
|
235 _sys_read_ahead (int fd)
|
|
|
236 {
|
|
|
237 child_process * cp;
|
|
|
238 int rc = 0;
|
|
|
239
|
|
|
240 if (fd < 0 || fd >= MAXDESC)
|
|
|
241 return STATUS_READ_ERROR;
|
|
|
242
|
|
|
243 cp = fd_info[fd].cp;
|
|
|
244
|
|
|
245 if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY)
|
|
|
246 return STATUS_READ_ERROR;
|
|
|
247
|
|
|
248 if ((fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) == 0
|
|
|
249 || (fd_info[fd].flags & FILE_READ) == 0)
|
|
|
250 {
|
|
|
251 /* fd is not a pipe or socket */
|
|
|
252 abort ();
|
|
|
253 }
|
|
|
254
|
|
|
255 cp->status = STATUS_READ_IN_PROGRESS;
|
|
|
256
|
|
|
257 if (fd_info[fd].flags & FILE_PIPE)
|
|
|
258 {
|
|
|
259 rc = _read (fd, &cp->chr, sizeof (char));
|
|
|
260
|
|
|
261 /* Give subprocess time to buffer some more output for us before
|
|
|
262 reporting that input is available; we need this because Win95
|
|
|
263 connects DOS programs to pipes by making the pipe appear to be
|
|
|
264 the normal console stdout - as a result most DOS programs will
|
|
|
265 write to stdout without buffering, ie. one character at a
|
|
|
266 time. Even some Win32 programs do this - "dir" in a command
|
|
|
267 shell on NT is very slow if we don't do this. */
|
|
|
268 if (rc > 0)
|
|
|
269 {
|
|
|
270 int wait = XINT (Vwin32_pipe_read_delay);
|
|
|
271
|
|
|
272 if (wait > 0)
|
|
|
273 Sleep (wait);
|
|
|
274 else if (wait < 0)
|
|
|
275 while (++wait <= 0)
|
|
|
276 /* Yield remainder of our time slice, effectively giving a
|
|
|
277 temporary priority boost to the child process. */
|
|
|
278 Sleep (0);
|
|
|
279 }
|
|
|
280 }
|
|
|
281
|
|
|
282 if (rc == sizeof (char))
|
|
|
283 cp->status = STATUS_READ_SUCCEEDED;
|
|
|
284 else
|
|
|
285 cp->status = STATUS_READ_FAILED;
|
|
|
286
|
|
|
287 return cp->status;
|
|
|
288 }
|
|
|
289
|
|
|
290 /* Thread proc for child process and socket reader threads. Each thread
|
|
|
291 is normally blocked until woken by select() to check for input by
|
|
|
292 reading one char. When the read completes, char_avail is signalled
|
|
|
293 to wake up the select emulator and the thread blocks itself again. */
|
|
|
294 DWORD WINAPI
|
|
|
295 reader_thread (void *arg)
|
|
|
296 {
|
|
|
297 child_process *cp;
|
|
|
298
|
|
|
299 /* Our identity */
|
|
|
300 cp = (child_process *)arg;
|
|
|
301
|
|
|
302 /* <matts@tibco.com> - I think the test below is wrong - we don't
|
|
|
303 want to wait for someone to signal char_consumed, as we haven't
|
|
|
304 read anything for them to consume yet! */
|
|
|
305
|
|
|
306 /*
|
|
|
307 if (cp == NULL ||
|
|
|
308 WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0)
|
|
|
309 */
|
|
|
310
|
|
|
311 if (cp == NULL)
|
|
|
312 {
|
|
|
313 return 1;
|
|
|
314 }
|
|
|
315
|
|
|
316 for (;;)
|
|
|
317 {
|
|
|
318 int rc;
|
|
|
319
|
|
|
320 rc = _sys_read_ahead (cp->fd);
|
|
|
321
|
|
|
322 /* The name char_avail is a misnomer - it really just means the
|
|
|
323 read-ahead has completed, whether successfully or not. */
|
|
|
324 if (!SetEvent (cp->char_avail))
|
|
|
325 {
|
|
|
326 DebPrint (("reader_thread.SetEvent failed with %lu for fd %ld\n",
|
|
|
327 GetLastError (), cp->fd));
|
|
|
328 return 1;
|
|
|
329 }
|
|
|
330
|
|
|
331 if (rc == STATUS_READ_ERROR)
|
|
|
332 {
|
|
|
333 /* We are finished, so clean up handles and set to NULL so
|
|
|
334 that CHILD_ACTIVE will see what is going on */
|
|
|
335 if (cp->char_avail) {
|
|
|
336 CloseHandle (cp->char_avail);
|
|
|
337 cp->char_avail = NULL;
|
|
|
338 }
|
|
|
339 if (cp->thrd) {
|
|
|
340 CloseHandle (cp->thrd);
|
|
|
341 cp->thrd = NULL;
|
|
|
342 }
|
|
|
343 if (cp->char_consumed) {
|
|
|
344 CloseHandle(cp->char_consumed);
|
|
|
345 cp->char_consumed = NULL;
|
|
|
346 }
|
|
|
347 if (cp->procinfo.hProcess)
|
|
|
348 {
|
|
|
349 CloseHandle (cp->procinfo.hProcess);
|
|
|
350 cp->procinfo.hProcess=NULL;
|
|
|
351 }
|
|
|
352 return 1;
|
|
|
353 }
|
|
|
354
|
|
|
355 /* If the read died, the child has died so let the thread die */
|
|
|
356 if (rc == STATUS_READ_FAILED)
|
|
|
357 break;
|
|
|
358
|
|
|
359 /* Wait until our input is acknowledged before reading again */
|
|
|
360 if (WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0)
|
|
|
361 {
|
|
|
362 DebPrint (("reader_thread.WaitForSingleObject failed with "
|
|
|
363 "%lu for fd %ld\n", GetLastError (), cp->fd));
|
|
|
364 break;
|
|
|
365 }
|
|
|
366 }
|
|
|
367 /* We are finished, so clean up handles and set to NULL so that
|
|
|
368 CHILD_ACTIVE will see what is going on */
|
|
|
369 if (cp->char_avail) {
|
|
|
370 CloseHandle (cp->char_avail);
|
|
|
371 cp->char_avail = NULL;
|
|
|
372 }
|
|
|
373 if (cp->thrd) {
|
|
|
374 CloseHandle (cp->thrd);
|
|
|
375 cp->thrd = NULL;
|
|
|
376 }
|
|
|
377 if (cp->char_consumed) {
|
|
|
378 CloseHandle(cp->char_consumed);
|
|
|
379 cp->char_consumed = NULL;
|
|
|
380 }
|
|
|
381 if (cp->procinfo.hProcess)
|
|
|
382 {
|
|
|
383 CloseHandle (cp->procinfo.hProcess);
|
|
|
384 cp->procinfo.hProcess=NULL;
|
|
|
385 }
|
|
|
386
|
|
|
387 return 0;
|
|
|
388 }
|
|
|
389
|
|
|
390 /* To avoid Emacs changing directory, we just record here the directory
|
|
|
391 the new process should start in. This is set just before calling
|
|
|
392 sys_spawnve, and is not generally valid at any other time. */
|
|
|
393 static const char * process_dir;
|
|
|
394
|
|
|
395 static BOOL
|
|
|
396 create_child (CONST char *exe, char *cmdline, char *env,
|
|
|
397 int * pPid, child_process *cp)
|
|
|
398 {
|
|
|
399 STARTUPINFO start;
|
|
|
400 SECURITY_ATTRIBUTES sec_attrs;
|
|
|
401 SECURITY_DESCRIPTOR sec_desc;
|
|
|
402 char dir[ MAXPATHLEN ];
|
|
|
403
|
|
|
404 if (cp == NULL) abort ();
|
|
|
405
|
|
|
406 xzero (start);
|
|
|
407 start.cb = sizeof (start);
|
|
|
408
|
|
|
409 #ifdef HAVE_NTGUI
|
|
|
410 if (NILP (Vwin32_start_process_show_window))
|
|
|
411 start.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
|
|
|
412 else
|
|
|
413 start.dwFlags = STARTF_USESTDHANDLES;
|
|
|
414 start.wShowWindow = SW_HIDE;
|
|
|
415
|
|
|
416 start.hStdInput = GetStdHandle (STD_INPUT_HANDLE);
|
|
|
417 start.hStdOutput = GetStdHandle (STD_OUTPUT_HANDLE);
|
|
|
418 start.hStdError = GetStdHandle (STD_ERROR_HANDLE);
|
|
|
419 #endif /* HAVE_NTGUI */
|
|
|
420
|
|
|
421 /* Explicitly specify no security */
|
|
|
422 if (!InitializeSecurityDescriptor (&sec_desc, SECURITY_DESCRIPTOR_REVISION))
|
|
|
423 goto EH_Fail;
|
|
|
424 if (!SetSecurityDescriptorDacl (&sec_desc, TRUE, NULL, FALSE))
|
|
|
425 goto EH_Fail;
|
|
|
426 sec_attrs.nLength = sizeof (sec_attrs);
|
|
|
427 sec_attrs.lpSecurityDescriptor = &sec_desc;
|
|
|
428 sec_attrs.bInheritHandle = FALSE;
|
|
|
429
|
|
|
430 strcpy (dir, process_dir);
|
|
|
431 unixtodos_filename (dir);
|
|
|
432
|
|
|
433 if (!CreateProcess (exe, cmdline, &sec_attrs, NULL, TRUE,
|
|
|
434 (!NILP (Vwin32_start_process_share_console)
|
|
|
435 ? CREATE_NEW_PROCESS_GROUP
|
|
|
436 : CREATE_NEW_CONSOLE),
|
|
|
437 env, dir,
|
|
|
438 &start, &cp->procinfo))
|
|
|
439 goto EH_Fail;
|
|
|
440
|
|
|
441 cp->pid = (int) cp->procinfo.dwProcessId;
|
|
|
442
|
|
|
443 CloseHandle (cp->procinfo.hThread);
|
|
|
444 CloseHandle (cp->procinfo.hProcess);
|
|
|
445 cp->procinfo.hThread=NULL;
|
|
|
446 cp->procinfo.hProcess=NULL;
|
|
|
447
|
|
432
|
448 /* pid must fit in a Lisp_Int */
|
|
428
|
449
|
|
|
450
|
|
|
451 *pPid = cp->pid;
|
|
|
452
|
|
|
453 return TRUE;
|
|
|
454
|
|
|
455 EH_Fail:
|
|
|
456 DebPrint (("create_child.CreateProcess failed: %ld\n", GetLastError()););
|
|
|
457 return FALSE;
|
|
|
458 }
|
|
|
459
|
|
|
460 #ifndef __MINGW32__
|
|
|
461 /* Return pointer to section header for section containing the given
|
|
|
462 relative virtual address. */
|
|
|
463 static IMAGE_SECTION_HEADER *
|
|
|
464 rva_to_section (DWORD rva, IMAGE_NT_HEADERS * nt_header)
|
|
|
465 {
|
|
|
466 PIMAGE_SECTION_HEADER section;
|
|
|
467 int i;
|
|
|
468
|
|
|
469 section = IMAGE_FIRST_SECTION (nt_header);
|
|
|
470
|
|
|
471 for (i = 0; i < nt_header->FileHeader.NumberOfSections; i++)
|
|
|
472 {
|
|
|
473 if (rva >= section->VirtualAddress
|
|
|
474 && rva < section->VirtualAddress + section->SizeOfRawData)
|
|
|
475 return section;
|
|
|
476 section++;
|
|
|
477 }
|
|
|
478 return NULL;
|
|
|
479 }
|
|
|
480 #endif
|
|
|
481
|
|
|
482 void
|
|
|
483 win32_executable_type (CONST char * filename, int * is_dos_app, int * is_cygnus_app)
|
|
|
484 {
|
|
|
485 file_data executable;
|
|
|
486 char * p;
|
|
|
487
|
|
|
488 /* Default values in case we can't tell for sure. */
|
|
|
489 *is_dos_app = FALSE;
|
|
|
490 *is_cygnus_app = FALSE;
|
|
|
491
|
|
|
492 if (!open_input_file (&executable, filename))
|
|
|
493 return;
|
|
|
494
|
|
|
495 p = strrchr (filename, '.');
|
|
|
496
|
|
|
497 /* We can only identify DOS .com programs from the extension. */
|
|
|
498 if (p && stricmp (p, ".com") == 0)
|
|
|
499 *is_dos_app = TRUE;
|
|
|
500 else if (p && (stricmp (p, ".bat") == 0 ||
|
|
|
501 stricmp (p, ".cmd") == 0))
|
|
|
502 {
|
|
|
503 /* A DOS shell script - it appears that CreateProcess is happy to
|
|
|
504 accept this (somewhat surprisingly); presumably it looks at
|
|
|
505 COMSPEC to determine what executable to actually invoke.
|
|
|
506 Therefore, we have to do the same here as well. */
|
|
|
507 /* Actually, I think it uses the program association for that
|
|
|
508 extension, which is defined in the registry. */
|
|
|
509 p = egetenv ("COMSPEC");
|
|
|
510 if (p)
|
|
|
511 win32_executable_type (p, is_dos_app, is_cygnus_app);
|
|
|
512 }
|
|
|
513 else
|
|
|
514 {
|
|
|
515 /* Look for DOS .exe signature - if found, we must also check that
|
|
|
516 it isn't really a 16- or 32-bit Windows exe, since both formats
|
|
|
517 start with a DOS program stub. Note that 16-bit Windows
|
|
|
518 executables use the OS/2 1.x format. */
|
|
|
519
|
|
|
520 #ifdef __MINGW32__
|
|
|
521 /* mingw32 doesn't have enough headers to detect cygwin
|
|
|
522 apps, just do what we can. */
|
|
|
523 FILHDR * exe_header;
|
|
|
524
|
|
|
525 exe_header = (FILHDR*) executable.file_base;
|
|
|
526 if (exe_header->e_magic != DOSMAGIC)
|
|
|
527 goto unwind;
|
|
|
528
|
|
|
529 if ((char *) exe_header->e_lfanew > (char *) executable.size)
|
|
|
530 {
|
|
|
531 /* Some dos headers (pkunzip) have bogus e_lfanew fields. */
|
|
|
532 *is_dos_app = TRUE;
|
|
|
533 }
|
|
|
534 else if (exe_header->nt_signature != NT_SIGNATURE)
|
|
|
535 {
|
|
|
536 *is_dos_app = TRUE;
|
|
|
537 }
|
|
|
538 #else
|
|
|
539 IMAGE_DOS_HEADER * dos_header;
|
|
|
540 IMAGE_NT_HEADERS * nt_header;
|
|
|
541
|
|
|
542 dos_header = (PIMAGE_DOS_HEADER) executable.file_base;
|
|
|
543 if (dos_header->e_magic != IMAGE_DOS_SIGNATURE)
|
|
|
544 goto unwind;
|
|
|
545
|
|
|
546 nt_header = (PIMAGE_NT_HEADERS) ((char *) dos_header + dos_header->e_lfanew);
|
|
|
547
|
|
|
548 if ((char *) nt_header > (char *) dos_header + executable.size)
|
|
|
549 {
|
|
|
550 /* Some dos headers (pkunzip) have bogus e_lfanew fields. */
|
|
|
551 *is_dos_app = TRUE;
|
|
|
552 }
|
|
|
553 else if (nt_header->Signature != IMAGE_NT_SIGNATURE &&
|
|
|
554 LOWORD (nt_header->Signature) != IMAGE_OS2_SIGNATURE)
|
|
|
555 {
|
|
|
556 *is_dos_app = TRUE;
|
|
|
557 }
|
|
|
558 else if (nt_header->Signature == IMAGE_NT_SIGNATURE)
|
|
|
559 {
|
|
|
560 /* Look for cygwin.dll in DLL import list. */
|
|
|
561 IMAGE_DATA_DIRECTORY import_dir =
|
|
|
562 nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT];
|
|
|
563 IMAGE_IMPORT_DESCRIPTOR * imports;
|
|
|
564 IMAGE_SECTION_HEADER * section;
|
|
|
565
|
|
|
566 section = rva_to_section (import_dir.VirtualAddress, nt_header);
|
|
|
567 imports = RVA_TO_PTR (import_dir.VirtualAddress, section, executable);
|
|
|
568
|
|
|
569 for ( ; imports->Name; imports++)
|
|
|
570 {
|
|
|
571 char * dllname = RVA_TO_PTR (imports->Name, section, executable);
|
|
|
572
|
|
|
573 if (strcmp (dllname, "cygwin.dll") == 0)
|
|
|
574 {
|
|
|
575 *is_cygnus_app = TRUE;
|
|
|
576 break;
|
|
|
577 }
|
|
|
578 }
|
|
|
579 }
|
|
|
580 #endif
|
|
|
581 }
|
|
|
582
|
|
|
583 unwind:
|
|
|
584 close_file_data (&executable);
|
|
|
585 }
|
|
|
586
|
|
|
587 int
|
|
|
588 compare_env (const void *strp1, const void *strp2)
|
|
|
589 {
|
|
|
590 const char *str1 = *(const char**)strp1, *str2 = *(const char**)strp2;
|
|
|
591
|
|
|
592 while (*str1 && *str2 && *str1 != '=' && *str2 != '=')
|
|
|
593 {
|
|
|
594 if ((*str1) > (*str2))
|
|
|
595 return 1;
|
|
|
596 else if ((*str1) < (*str2))
|
|
|
597 return -1;
|
|
|
598 str1++, str2++;
|
|
|
599 }
|
|
|
600
|
|
|
601 if (*str1 == '=' && *str2 == '=')
|
|
|
602 return 0;
|
|
|
603 else if (*str1 == '=')
|
|
|
604 return -1;
|
|
|
605 else
|
|
|
606 return 1;
|
|
|
607 }
|
|
|
608
|
|
|
609 void
|
|
|
610 merge_and_sort_env (char **envp1, char **envp2, char **new_envp)
|
|
|
611 {
|
|
|
612 char **optr, **nptr;
|
|
|
613 int num;
|
|
|
614
|
|
|
615 nptr = new_envp;
|
|
|
616 optr = envp1;
|
|
|
617 while (*optr)
|
|
|
618 *nptr++ = *optr++;
|
|
|
619 num = optr - envp1;
|
|
|
620
|
|
|
621 optr = envp2;
|
|
|
622 while (*optr)
|
|
|
623 *nptr++ = *optr++;
|
|
|
624 num += optr - envp2;
|
|
|
625
|
|
|
626 qsort (new_envp, num, sizeof (char *), compare_env);
|
|
|
627
|
|
|
628 *nptr = NULL;
|
|
|
629 }
|
|
|
630
|
|
|
631 /* When a new child process is created we need to register it in our list,
|
|
|
632 so intercept spawn requests. */
|
|
|
633 int
|
|
|
634 sys_spawnve (int mode, CONST char *cmdname,
|
|
|
635 CONST char * CONST *argv, CONST char *CONST *envp)
|
|
|
636 {
|
|
|
637 Lisp_Object program, full;
|
|
|
638 char *cmdline, *env, *parg, **targ;
|
|
|
639 int arglen, numenv;
|
|
|
640 int pid;
|
|
|
641 child_process *cp;
|
|
|
642 int is_dos_app, is_cygnus_app;
|
|
|
643 int do_quoting = 0;
|
|
|
644 char escape_char = 0;
|
|
|
645 /* We pass our process ID to our children by setting up an environment
|
|
|
646 variable in their environment. */
|
|
|
647 char ppid_env_var_buffer[64];
|
|
|
648 char *extra_env[] = {ppid_env_var_buffer, NULL};
|
|
|
649 struct gcpro gcpro1;
|
|
|
650
|
|
|
651 /* We don't care about the other modes */
|
|
|
652 if (mode != _P_NOWAIT)
|
|
|
653 {
|
|
|
654 errno = EINVAL;
|
|
|
655 return -1;
|
|
|
656 }
|
|
|
657
|
|
|
658 /* Handle executable names without an executable suffix. */
|
|
|
659 program = make_string (cmdname, strlen (cmdname));
|
|
|
660 GCPRO1 (program);
|
|
|
661 if (NILP (Ffile_executable_p (program)))
|
|
|
662 {
|
|
|
663 full = Qnil;
|
|
|
664 locate_file (Vexec_path, program, Vlisp_EXEC_SUFFIXES, &full, 1);
|
|
|
665 if (NILP (full))
|
|
|
666 {
|
|
|
667 UNGCPRO;
|
|
|
668 errno = EINVAL;
|
|
|
669 return -1;
|
|
|
670 }
|
|
|
671 GET_C_STRING_FILENAME_DATA_ALLOCA (full, cmdname);
|
|
|
672 }
|
|
|
673 else
|
|
|
674 {
|
|
|
675 (char*)cmdname = alloca (strlen (argv[0]) + 1);
|
|
|
676 strcpy ((char*)cmdname, argv[0]);
|
|
|
677 }
|
|
|
678 UNGCPRO;
|
|
|
679
|
|
|
680 /* make sure argv[0] and cmdname are both in DOS format */
|
|
|
681 unixtodos_filename ((char*)cmdname);
|
|
|
682 /* #### KLUDGE */
|
|
|
683 ((CONST char**)argv)[0] = cmdname;
|
|
|
684
|
|
|
685 /* Determine whether program is a 16-bit DOS executable, or a Win32
|
|
|
686 executable that is implicitly linked to the Cygnus dll (implying it
|
|
|
687 was compiled with the Cygnus GNU toolchain and hence relies on
|
|
|
688 cygwin.dll to parse the command line - we use this to decide how to
|
|
|
689 escape quote chars in command line args that must be quoted). */
|
|
|
690 win32_executable_type (cmdname, &is_dos_app, &is_cygnus_app);
|
|
|
691
|
|
|
692 /* On Windows 95, if cmdname is a DOS app, we invoke a helper
|
|
|
693 application to start it by specifying the helper app as cmdname,
|
|
|
694 while leaving the real app name as argv[0]. */
|
|
|
695 if (is_dos_app)
|
|
|
696 {
|
|
|
697 cmdname = alloca (MAXPATHLEN);
|
|
|
698 if (egetenv ("CMDPROXY"))
|
|
|
699 strcpy ((char*)cmdname, egetenv ("CMDPROXY"));
|
|
|
700 else
|
|
|
701 {
|
|
|
702 strcpy ((char*)cmdname, XSTRING_DATA (Vinvocation_directory));
|
|
|
703 strcat ((char*)cmdname, "cmdproxy.exe");
|
|
|
704 }
|
|
|
705 unixtodos_filename ((char*)cmdname);
|
|
|
706 }
|
|
|
707
|
|
|
708 /* we have to do some conjuring here to put argv and envp into the
|
|
|
709 form CreateProcess wants... argv needs to be a space separated/null
|
|
|
710 terminated list of parameters, and envp is a null
|
|
|
711 separated/double-null terminated list of parameters.
|
|
|
712
|
|
|
713 Additionally, zero-length args and args containing whitespace or
|
|
|
714 quote chars need to be wrapped in double quotes - for this to work,
|
|
|
715 embedded quotes need to be escaped as well. The aim is to ensure
|
|
|
716 the child process reconstructs the argv array we start with
|
|
|
717 exactly, so we treat quotes at the beginning and end of arguments
|
|
|
718 as embedded quotes.
|
|
|
719
|
|
|
720 The Win32 GNU-based library from Cygnus doubles quotes to escape
|
|
|
721 them, while MSVC uses backslash for escaping. (Actually the MSVC
|
|
|
722 startup code does attempt to recognize doubled quotes and accept
|
|
|
723 them, but gets it wrong and ends up requiring three quotes to get a
|
|
|
724 single embedded quote!) So by default we decide whether to use
|
|
|
725 quote or backslash as the escape character based on whether the
|
|
|
726 binary is apparently a Cygnus compiled app.
|
|
|
727
|
|
|
728 Note that using backslash to escape embedded quotes requires
|
|
|
729 additional special handling if an embedded quote is already
|
|
|
730 preceded by backslash, or if an arg requiring quoting ends with
|
|
|
731 backslash. In such cases, the run of escape characters needs to be
|
|
|
732 doubled. For consistency, we apply this special handling as long
|
|
|
733 as the escape character is not quote.
|
|
|
734
|
|
|
735 Since we have no idea how large argv and envp are likely to be we
|
|
|
736 figure out list lengths on the fly and allocate them. */
|
|
|
737
|
|
|
738 if (!NILP (Vwin32_quote_process_args))
|
|
|
739 {
|
|
|
740 do_quoting = 1;
|
|
|
741 /* Override escape char by binding win32-quote-process-args to
|
|
|
742 desired character, or use t for auto-selection. */
|
|
|
743 if (INTP (Vwin32_quote_process_args))
|
|
|
744 escape_char = XINT (Vwin32_quote_process_args);
|
|
|
745 else
|
|
|
746 escape_char = is_cygnus_app ? '"' : '\\';
|
|
|
747 }
|
|
|
748
|
|
|
749 /* do argv... */
|
|
|
750 arglen = 0;
|
|
|
751 targ = (char**)argv;
|
|
|
752 while (*targ)
|
|
|
753 {
|
|
|
754 char * p = *targ;
|
|
|
755 int need_quotes = 0;
|
|
|
756 int escape_char_run = 0;
|
|
|
757
|
|
|
758 if (*p == 0)
|
|
|
759 need_quotes = 1;
|
|
|
760 for ( ; *p; p++)
|
|
|
761 {
|
|
|
762 if (*p == '"')
|
|
|
763 {
|
|
|
764 /* allow for embedded quotes to be escaped */
|
|
|
765 arglen++;
|
|
|
766 need_quotes = 1;
|
|
|
767 /* handle the case where the embedded quote is already escaped */
|
|
|
768 if (escape_char_run > 0)
|
|
|
769 {
|
|
|
770 /* To preserve the arg exactly, we need to double the
|
|
|
771 preceding escape characters (plus adding one to
|
|
|
772 escape the quote character itself). */
|
|
|
773 arglen += escape_char_run;
|
|
|
774 }
|
|
|
775 }
|
|
|
776 else if (*p == ' ' || *p == '\t')
|
|
|
777 {
|
|
|
778 need_quotes = 1;
|
|
|
779 }
|
|
|
780
|
|
|
781 if (*p == escape_char && escape_char != '"')
|
|
|
782 escape_char_run++;
|
|
|
783 else
|
|
|
784 escape_char_run = 0;
|
|
|
785 }
|
|
|
786 if (need_quotes)
|
|
|
787 {
|
|
|
788 arglen += 2;
|
|
|
789 /* handle the case where the arg ends with an escape char - we
|
|
|
790 must not let the enclosing quote be escaped. */
|
|
|
791 if (escape_char_run > 0)
|
|
|
792 arglen += escape_char_run;
|
|
|
793 }
|
|
|
794 arglen += strlen (*targ++) + 1;
|
|
|
795 }
|
|
|
796 cmdline = alloca (arglen);
|
|
|
797 targ = (char**)argv;
|
|
|
798 parg = cmdline;
|
|
|
799 while (*targ)
|
|
|
800 {
|
|
|
801 char * p = *targ;
|
|
|
802 int need_quotes = 0;
|
|
|
803
|
|
|
804 if (*p == 0)
|
|
|
805 need_quotes = 1;
|
|
|
806
|
|
|
807 if (do_quoting)
|
|
|
808 {
|
|
|
809 for ( ; *p; p++)
|
|
|
810 if (*p == ' ' || *p == '\t' || *p == '"')
|
|
|
811 need_quotes = 1;
|
|
|
812 }
|
|
|
813 if (need_quotes)
|
|
|
814 {
|
|
|
815 int escape_char_run = 0;
|
|
|
816 char * first;
|
|
|
817 char * last;
|
|
|
818
|
|
|
819 p = *targ;
|
|
|
820 first = p;
|
|
|
821 last = p + strlen (p) - 1;
|
|
|
822 *parg++ = '"';
|
|
|
823 #if 0
|
|
|
824 /* This version does not escape quotes if they occur at the
|
|
|
825 beginning or end of the arg - this could lead to incorrect
|
|
|
826 behavior when the arg itself represents a command line
|
|
|
827 containing quoted args. I believe this was originally done
|
|
|
828 as a hack to make some things work, before
|
|
|
829 `win32-quote-process-args' was added. */
|
|
|
830 while (*p)
|
|
|
831 {
|
|
|
832 if (*p == '"' && p > first && p < last)
|
|
|
833 *parg++ = escape_char; /* escape embedded quotes */
|
|
|
834 *parg++ = *p++;
|
|
|
835 }
|
|
|
836 #else
|
|
|
837 for ( ; *p; p++)
|
|
|
838 {
|
|
|
839 if (*p == '"')
|
|
|
840 {
|
|
|
841 /* double preceding escape chars if any */
|
|
|
842 while (escape_char_run > 0)
|
|
|
843 {
|
|
|
844 *parg++ = escape_char;
|
|
|
845 escape_char_run--;
|
|
|
846 }
|
|
|
847 /* escape all quote chars, even at beginning or end */
|
|
|
848 *parg++ = escape_char;
|
|
|
849 }
|
|
|
850 *parg++ = *p;
|
|
|
851
|
|
|
852 if (*p == escape_char && escape_char != '"')
|
|
|
853 escape_char_run++;
|
|
|
854 else
|
|
|
855 escape_char_run = 0;
|
|
|
856 }
|
|
|
857 /* double escape chars before enclosing quote */
|
|
|
858 while (escape_char_run > 0)
|
|
|
859 {
|
|
|
860 *parg++ = escape_char;
|
|
|
861 escape_char_run--;
|
|
|
862 }
|
|
|
863 #endif
|
|
|
864 *parg++ = '"';
|
|
|
865 }
|
|
|
866 else
|
|
|
867 {
|
|
|
868 strcpy (parg, *targ);
|
|
|
869 parg += strlen (*targ);
|
|
|
870 }
|
|
|
871 *parg++ = ' ';
|
|
|
872 targ++;
|
|
|
873 }
|
|
|
874 *--parg = '\0';
|
|
|
875
|
|
|
876 /* and envp... */
|
|
|
877 arglen = 1;
|
|
|
878 targ = (char**)envp;
|
|
|
879 numenv = 1; /* for end null */
|
|
|
880 while (*targ)
|
|
|
881 {
|
|
|
882 arglen += strlen (*targ++) + 1;
|
|
|
883 numenv++;
|
|
|
884 }
|
|
|
885 /* extra env vars... */
|
|
|
886 sprintf (ppid_env_var_buffer, "__PARENT_PROCESS_ID=%d",
|
|
|
887 GetCurrentProcessId ());
|
|
|
888 arglen += strlen (ppid_env_var_buffer) + 1;
|
|
|
889 numenv++;
|
|
|
890
|
|
|
891 /* merge env passed in and extra env into one, and sort it. */
|
|
|
892 targ = (char **) alloca (numenv * sizeof (char *));
|
|
|
893 merge_and_sort_env ((char**)envp, extra_env, targ);
|
|
|
894
|
|
|
895 /* concatenate env entries. */
|
|
|
896 env = alloca (arglen);
|
|
|
897 parg = env;
|
|
|
898 while (*targ)
|
|
|
899 {
|
|
|
900 strcpy (parg, *targ);
|
|
|
901 parg += strlen (*targ++);
|
|
|
902 *parg++ = '\0';
|
|
|
903 }
|
|
|
904 *parg++ = '\0';
|
|
|
905 *parg = '\0';
|
|
|
906
|
|
|
907 cp = new_child ();
|
|
|
908 if (cp == NULL)
|
|
|
909 {
|
|
|
910 errno = EAGAIN;
|
|
|
911 return -1;
|
|
|
912 }
|
|
|
913
|
|
|
914 /* Now create the process. */
|
|
|
915 if (!create_child (cmdname, cmdline, env, &pid, cp))
|
|
|
916 {
|
|
|
917 delete_child (cp);
|
|
|
918 errno = ENOEXEC;
|
|
|
919 return -1;
|
|
|
920 }
|
|
|
921
|
|
|
922 return pid;
|
|
|
923 }
|
|
|
924
|
|
|
925 /* Substitute for certain kill () operations */
|
|
|
926
|
|
|
927 static BOOL CALLBACK
|
|
|
928 find_child_console (HWND hwnd, child_process * cp)
|
|
|
929 {
|
|
|
930 DWORD thread_id;
|
|
|
931 DWORD process_id;
|
|
|
932
|
|
|
933 thread_id = GetWindowThreadProcessId (hwnd, &process_id);
|
|
|
934 if (process_id == cp->procinfo.dwProcessId)
|
|
|
935 {
|
|
|
936 char window_class[32];
|
|
|
937
|
|
|
938 GetClassName (hwnd, window_class, sizeof (window_class));
|
|
|
939 if (strcmp (window_class,
|
|
|
940 (os_subtype == OS_WIN95)
|
|
|
941 ? "tty"
|
|
|
942 : "ConsoleWindowClass") == 0)
|
|
|
943 {
|
|
|
944 cp->hwnd = hwnd;
|
|
|
945 return FALSE;
|
|
|
946 }
|
|
|
947 }
|
|
|
948 /* keep looking */
|
|
|
949 return TRUE;
|
|
|
950 }
|
|
|
951
|
|
|
952 int
|
|
|
953 sys_kill (int pid, int sig)
|
|
|
954 {
|
|
|
955 child_process *cp;
|
|
|
956 HANDLE proc_hand;
|
|
|
957 int need_to_free = 0;
|
|
|
958 int rc = 0;
|
|
|
959
|
|
|
960 /* Only handle signals that will result in the process dying */
|
|
|
961 if (sig != SIGINT && sig != SIGKILL && sig != SIGQUIT && sig != SIGHUP)
|
|
|
962 {
|
|
|
963 errno = EINVAL;
|
|
|
964 return -1;
|
|
|
965 }
|
|
|
966
|
|
|
967 cp = find_child_pid (pid);
|
|
|
968 if (cp == NULL)
|
|
|
969 {
|
|
|
970 proc_hand = OpenProcess (PROCESS_TERMINATE, 0, pid);
|
|
|
971 if (proc_hand == NULL)
|
|
|
972 {
|
|
|
973 errno = EPERM;
|
|
|
974 return -1;
|
|
|
975 }
|
|
|
976 need_to_free = 1;
|
|
|
977 }
|
|
|
978 else
|
|
|
979 {
|
|
|
980 proc_hand = cp->procinfo.hProcess;
|
|
|
981 pid = cp->procinfo.dwProcessId;
|
|
|
982
|
|
|
983 /* Try to locate console window for process. */
|
|
|
984 EnumWindows ((WNDENUMPROC)find_child_console, (LPARAM) cp);
|
|
|
985 }
|
|
|
986
|
|
|
987 if (sig == SIGINT)
|
|
|
988 {
|
|
|
989 if (NILP (Vwin32_start_process_share_console) && cp && cp->hwnd)
|
|
|
990 {
|
|
|
991 BYTE control_scan_code = (BYTE) MapVirtualKey (VK_CONTROL, 0);
|
|
|
992 BYTE vk_break_code = VK_CANCEL;
|
|
|
993 BYTE break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0);
|
|
|
994 HWND foreground_window;
|
|
|
995
|
|
|
996 if (break_scan_code == 0)
|
|
|
997 {
|
|
|
998 /* Fake Ctrl-C if we can't manage Ctrl-Break. */
|
|
|
999 vk_break_code = 'C';
|
|
|
1000 break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0);
|
|
|
1001 }
|
|
|
1002
|
|
|
1003 foreground_window = GetForegroundWindow ();
|
|
|
1004 if (foreground_window && SetForegroundWindow (cp->hwnd))
|
|
|
1005 {
|
|
|
1006 /* Generate keystrokes as if user had typed Ctrl-Break or Ctrl-C. */
|
|
|
1007 keybd_event (VK_CONTROL, control_scan_code, 0, 0);
|
|
|
1008 keybd_event (vk_break_code, break_scan_code, 0, 0);
|
|
|
1009 keybd_event (vk_break_code, break_scan_code, KEYEVENTF_KEYUP, 0);
|
|
|
1010 keybd_event (VK_CONTROL, control_scan_code, KEYEVENTF_KEYUP, 0);
|
|
|
1011
|
|
|
1012 /* Sleep for a bit to give time for Emacs frame to respond
|
|
|
1013 to focus change events (if Emacs was active app). */
|
|
|
1014 Sleep (10);
|
|
|
1015
|
|
|
1016 SetForegroundWindow (foreground_window);
|
|
|
1017 }
|
|
|
1018 }
|
|
|
1019 /* Ctrl-Break is NT equivalent of SIGINT. */
|
|
|
1020 else if (!GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, pid))
|
|
|
1021 {
|
|
|
1022 DebPrint (("sys_kill.GenerateConsoleCtrlEvent return %d "
|
|
|
1023 "for pid %lu\n", GetLastError (), pid));
|
|
|
1024 errno = EINVAL;
|
|
|
1025 rc = -1;
|
|
|
1026 }
|
|
|
1027 }
|
|
|
1028 else
|
|
|
1029 {
|
|
|
1030 if (NILP (Vwin32_start_process_share_console) && cp && cp->hwnd)
|
|
|
1031 {
|
|
|
1032 #if 1
|
|
|
1033 if (os_subtype == OS_WIN95)
|
|
|
1034 {
|
|
|
1035 /*
|
|
|
1036 Another possibility is to try terminating the VDM out-right by
|
|
|
1037 calling the Shell VxD (id 0x17) V86 interface, function #4
|
|
|
1038 "SHELL_Destroy_VM", ie.
|
|
|
1039
|
|
|
1040 mov edx,4
|
|
|
1041 mov ebx,vm_handle
|
|
|
1042 call shellapi
|
|
|
1043
|
|
|
1044 First need to determine the current VM handle, and then arrange for
|
|
|
1045 the shellapi call to be made from the system vm (by using
|
|
|
1046 Switch_VM_and_callback).
|
|
|
1047
|
|
|
1048 Could try to invoke DestroyVM through CallVxD.
|
|
|
1049
|
|
|
1050 */
|
|
|
1051 #if 0
|
|
|
1052 /* On Win95, posting WM_QUIT causes the 16-bit subsystem
|
|
|
1053 to hang when cmdproxy is used in conjunction with
|
|
|
1054 command.com for an interactive shell. Posting
|
|
|
1055 WM_CLOSE pops up a dialog that, when Yes is selected,
|
|
|
1056 does the same thing. TerminateProcess is also less
|
|
|
1057 than ideal in that subprocesses tend to stick around
|
|
|
1058 until the machine is shutdown, but at least it
|
|
|
1059 doesn't freeze the 16-bit subsystem. */
|
|
|
1060 PostMessage (cp->hwnd, WM_QUIT, 0xff, 0);
|
|
|
1061 #endif
|
|
|
1062 if (!TerminateProcess (proc_hand, 0xff))
|
|
|
1063 {
|
|
|
1064 DebPrint (("sys_kill.TerminateProcess returned %d "
|
|
|
1065 "for pid %lu\n", GetLastError (), pid));
|
|
|
1066 errno = EINVAL;
|
|
|
1067 rc = -1;
|
|
|
1068 }
|
|
|
1069 }
|
|
|
1070 else
|
|
|
1071 #endif
|
|
|
1072 PostMessage (cp->hwnd, WM_CLOSE, 0, 0);
|
|
|
1073 }
|
|
|
1074 /* Kill the process. On Win32 this doesn't kill child processes
|
|
|
1075 so it doesn't work very well for shells which is why it's not
|
|
|
1076 used in every case. */
|
|
|
1077 else if (!TerminateProcess (proc_hand, 0xff))
|
|
|
1078 {
|
|
|
1079 DebPrint (("sys_kill.TerminateProcess returned %d "
|
|
|
1080 "for pid %lu\n", GetLastError (), pid));
|
|
|
1081 errno = EINVAL;
|
|
|
1082 rc = -1;
|
|
|
1083 }
|
|
|
1084 }
|
|
|
1085
|
|
|
1086 if (need_to_free)
|
|
|
1087 CloseHandle (proc_hand);
|
|
|
1088
|
|
|
1089 return rc;
|
|
|
1090 }
|
|
|
1091
|
|
|
1092 #if 0
|
|
|
1093 /* Sync with FSF Emacs 19.34.6 note: ifdef'ed out in XEmacs */
|
|
|
1094 extern int report_file_error (CONST char *, Lisp_Object);
|
|
|
1095 #endif
|
|
|
1096 /* The following two routines are used to manipulate stdin, stdout, and
|
|
|
1097 stderr of our child processes.
|
|
|
1098
|
|
|
1099 Assuming that in, out, and err are *not* inheritable, we make them
|
|
|
1100 stdin, stdout, and stderr of the child as follows:
|
|
|
1101
|
|
|
1102 - Save the parent's current standard handles.
|
|
|
1103 - Set the std handles to inheritable duplicates of the ones being passed in.
|
|
|
1104 (Note that _get_osfhandle() is an io.h procedure that retrieves the
|
|
|
1105 NT file handle for a crt file descriptor.)
|
|
|
1106 - Spawn the child, which inherits in, out, and err as stdin,
|
|
|
1107 stdout, and stderr. (see Spawnve)
|
|
|
1108 - Close the std handles passed to the child.
|
|
|
1109 - Reset the parent's standard handles to the saved handles.
|
|
|
1110 (see reset_standard_handles)
|
|
|
1111 We assume that the caller closes in, out, and err after calling us. */
|
|
|
1112
|
|
|
1113 void
|
|
|
1114 prepare_standard_handles (int in, int out, int err, HANDLE handles[3])
|
|
|
1115 {
|
|
|
1116 HANDLE parent;
|
|
|
1117 HANDLE newstdin, newstdout, newstderr;
|
|
|
1118
|
|
|
1119 parent = GetCurrentProcess ();
|
|
|
1120
|
|
|
1121 handles[0] = GetStdHandle (STD_INPUT_HANDLE);
|
|
|
1122 handles[1] = GetStdHandle (STD_OUTPUT_HANDLE);
|
|
|
1123 handles[2] = GetStdHandle (STD_ERROR_HANDLE);
|
|
|
1124
|
|
|
1125 /* make inheritable copies of the new handles */
|
|
|
1126 if (!DuplicateHandle (parent,
|
|
|
1127 (HANDLE) _get_osfhandle (in),
|
|
|
1128 parent,
|
|
|
1129 &newstdin,
|
|
|
1130 0,
|
|
|
1131 TRUE,
|
|
|
1132 DUPLICATE_SAME_ACCESS))
|
|
|
1133 report_file_error ("Duplicating input handle for child", Qnil);
|
|
|
1134
|
|
|
1135 if (!DuplicateHandle (parent,
|
|
|
1136 (HANDLE) _get_osfhandle (out),
|
|
|
1137 parent,
|
|
|
1138 &newstdout,
|
|
|
1139 0,
|
|
|
1140 TRUE,
|
|
|
1141 DUPLICATE_SAME_ACCESS))
|
|
|
1142 report_file_error ("Duplicating output handle for child", Qnil);
|
|
|
1143
|
|
|
1144 if (!DuplicateHandle (parent,
|
|
|
1145 (HANDLE) _get_osfhandle (err),
|
|
|
1146 parent,
|
|
|
1147 &newstderr,
|
|
|
1148 0,
|
|
|
1149 TRUE,
|
|
|
1150 DUPLICATE_SAME_ACCESS))
|
|
|
1151 report_file_error ("Duplicating error handle for child", Qnil);
|
|
|
1152
|
|
|
1153 /* and store them as our std handles */
|
|
|
1154 if (!SetStdHandle (STD_INPUT_HANDLE, newstdin))
|
|
|
1155 report_file_error ("Changing stdin handle", Qnil);
|
|
|
1156
|
|
|
1157 if (!SetStdHandle (STD_OUTPUT_HANDLE, newstdout))
|
|
|
1158 report_file_error ("Changing stdout handle", Qnil);
|
|
|
1159
|
|
|
1160 if (!SetStdHandle (STD_ERROR_HANDLE, newstderr))
|
|
|
1161 report_file_error ("Changing stderr handle", Qnil);
|
|
|
1162 }
|
|
|
1163
|
|
|
1164 void
|
|
|
1165 reset_standard_handles (int in, int out, int err, HANDLE handles[3])
|
|
|
1166 {
|
|
|
1167 /* close the duplicated handles passed to the child */
|
|
|
1168 CloseHandle (GetStdHandle (STD_INPUT_HANDLE));
|
|
|
1169 CloseHandle (GetStdHandle (STD_OUTPUT_HANDLE));
|
|
|
1170 CloseHandle (GetStdHandle (STD_ERROR_HANDLE));
|
|
|
1171
|
|
|
1172 /* now restore parent's saved std handles */
|
|
|
1173 SetStdHandle (STD_INPUT_HANDLE, handles[0]);
|
|
|
1174 SetStdHandle (STD_OUTPUT_HANDLE, handles[1]);
|
|
|
1175 SetStdHandle (STD_ERROR_HANDLE, handles[2]);
|
|
|
1176 }
|
|
|
1177
|
|
|
1178 void
|
|
|
1179 set_process_dir (const char * dir)
|
|
|
1180 {
|
|
|
1181 process_dir = dir;
|
|
|
1182 }
|
|
|
1183
|
|
|
1184 /* Some miscellaneous functions that are Windows specific, but not GUI
|
|
|
1185 specific (ie. are applicable in terminal or batch mode as well). */
|
|
|
1186
|
|
|
1187 /* lifted from fileio.c */
|
|
|
1188 #define CORRECT_DIR_SEPS(s) \
|
|
|
1189 do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \
|
|
|
1190 else unixtodos_filename (s); \
|
|
|
1191 } while (0)
|
|
|
1192
|
|
|
1193 DEFUN ("win32-short-file-name", Fwin32_short_file_name, 1, 1, "", /*
|
|
|
1194 Return the short file name version (8.3) of the full path of FILENAME.
|
|
|
1195 If FILENAME does not exist, return nil.
|
|
|
1196 All path elements in FILENAME are converted to their short names.
|
|
|
1197 */
|
|
|
1198 (filename))
|
|
|
1199 {
|
|
|
1200 char shortname[MAX_PATH];
|
|
|
1201
|
|
|
1202 CHECK_STRING (filename);
|
|
|
1203
|
|
|
1204 /* first expand it. */
|
|
|
1205 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1206
|
|
|
1207 /* luckily, this returns the short version of each element in the path. */
|
|
|
1208 if (GetShortPathName (XSTRING_DATA (filename), shortname, MAX_PATH) == 0)
|
|
|
1209 return Qnil;
|
|
|
1210
|
|
|
1211 CORRECT_DIR_SEPS (shortname);
|
|
|
1212
|
|
|
1213 return build_string (shortname);
|
|
|
1214 }
|
|
|
1215
|
|
|
1216
|
|
|
1217 DEFUN ("win32-long-file-name", Fwin32_long_file_name, 1, 1, "", /*
|
|
|
1218 Return the long file name version of the full path of FILENAME.
|
|
|
1219 If FILENAME does not exist, return nil.
|
|
|
1220 All path elements in FILENAME are converted to their long names.
|
|
|
1221 */
|
|
|
1222 (filename))
|
|
|
1223 {
|
|
|
1224 char longname[ MAX_PATH ];
|
|
|
1225
|
|
|
1226 CHECK_STRING (filename);
|
|
|
1227
|
|
|
1228 /* first expand it. */
|
|
|
1229 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1230
|
|
|
1231 if (!win32_get_long_filename (XSTRING_DATA (filename), longname, MAX_PATH))
|
|
|
1232 return Qnil;
|
|
|
1233
|
|
|
1234 CORRECT_DIR_SEPS (longname);
|
|
|
1235
|
|
|
1236 return build_string (longname);
|
|
|
1237 }
|
|
|
1238
|
|
|
1239 DEFUN ("win32-set-process-priority", Fwin32_set_process_priority, 2, 2, "", /*
|
|
|
1240 Set the priority of PROCESS to PRIORITY.
|
|
|
1241 If PROCESS is nil, the priority of Emacs is changed, otherwise the
|
|
|
1242 priority of the process whose pid is PROCESS is changed.
|
|
|
1243 PRIORITY should be one of the symbols high, normal, or low;
|
|
|
1244 any other symbol will be interpreted as normal.
|
|
|
1245
|
|
|
1246 If successful, the return value is t, otherwise nil.
|
|
|
1247 */
|
|
|
1248 (process, priority))
|
|
|
1249 {
|
|
|
1250 HANDLE proc_handle = GetCurrentProcess ();
|
|
|
1251 DWORD priority_class = NORMAL_PRIORITY_CLASS;
|
|
|
1252 Lisp_Object result = Qnil;
|
|
|
1253
|
|
|
1254 CHECK_SYMBOL (priority);
|
|
|
1255
|
|
|
1256 if (!NILP (process))
|
|
|
1257 {
|
|
|
1258 DWORD pid;
|
|
|
1259 child_process *cp;
|
|
|
1260
|
|
|
1261 CHECK_INT (process);
|
|
|
1262
|
|
|
1263 /* Allow pid to be an internally generated one, or one obtained
|
|
|
1264 externally. This is necessary because real pids on Win95 are
|
|
|
1265 negative. */
|
|
|
1266
|
|
|
1267 pid = XINT (process);
|
|
|
1268 cp = find_child_pid (pid);
|
|
|
1269 if (cp != NULL)
|
|
|
1270 pid = cp->procinfo.dwProcessId;
|
|
|
1271
|
|
|
1272 proc_handle = OpenProcess (PROCESS_SET_INFORMATION, FALSE, pid);
|
|
|
1273 }
|
|
|
1274
|
|
|
1275 if (EQ (priority, Qhigh))
|
|
|
1276 priority_class = HIGH_PRIORITY_CLASS;
|
|
|
1277 else if (EQ (priority, Qlow))
|
|
|
1278 priority_class = IDLE_PRIORITY_CLASS;
|
|
|
1279
|
|
|
1280 if (proc_handle != NULL)
|
|
|
1281 {
|
|
|
1282 if (SetPriorityClass (proc_handle, priority_class))
|
|
|
1283 result = Qt;
|
|
|
1284 if (!NILP (process))
|
|
|
1285 CloseHandle (proc_handle);
|
|
|
1286 }
|
|
|
1287
|
|
|
1288 return result;
|
|
|
1289 }
|
|
|
1290
|
|
|
1291
|
|
|
1292 DEFUN ("win32-get-locale-info", Fwin32_get_locale_info, 1, 2, "", /*
|
|
|
1293 "Return information about the Windows locale LCID.
|
|
|
1294 By default, return a three letter locale code which encodes the default
|
|
|
1295 language as the first two characters, and the country or regional variant
|
|
|
1296 as the third letter. For example, ENU refers to `English (United States)',
|
|
|
1297 while ENC means `English (Canadian)'.
|
|
|
1298
|
|
|
1299 If the optional argument LONGFORM is non-nil, the long form of the locale
|
|
|
1300 name is returned, e.g. `English (United States)' instead.
|
|
|
1301
|
|
|
1302 If LCID (a 16-bit number) is not a valid locale, the result is nil.
|
|
|
1303 */
|
|
|
1304 (lcid, longform))
|
|
|
1305 {
|
|
|
1306 int got_abbrev;
|
|
|
1307 int got_full;
|
|
|
1308 char abbrev_name[32] = { 0 };
|
|
|
1309 char full_name[256] = { 0 };
|
|
|
1310
|
|
|
1311 CHECK_INT (lcid);
|
|
|
1312
|
|
|
1313 if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED))
|
|
|
1314 return Qnil;
|
|
|
1315
|
|
|
1316 if (NILP (longform))
|
|
|
1317 {
|
|
|
1318 got_abbrev = GetLocaleInfo (XINT (lcid),
|
|
|
1319 LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP,
|
|
|
1320 abbrev_name, sizeof (abbrev_name));
|
|
|
1321 if (got_abbrev)
|
|
|
1322 return build_string (abbrev_name);
|
|
|
1323 }
|
|
|
1324 else
|
|
|
1325 {
|
|
|
1326 got_full = GetLocaleInfo (XINT (lcid),
|
|
|
1327 LOCALE_SLANGUAGE | LOCALE_USE_CP_ACP,
|
|
|
1328 full_name, sizeof (full_name));
|
|
|
1329 if (got_full)
|
|
|
1330 return build_string (full_name);
|
|
|
1331 }
|
|
|
1332
|
|
|
1333 return Qnil;
|
|
|
1334 }
|
|
|
1335
|
|
|
1336
|
|
|
1337 DEFUN ("win32-get-current-locale-id", Fwin32_get_current_locale_id, 0, 0, "", /*
|
|
|
1338 "Return Windows locale id for current locale setting.
|
|
|
1339 This is a numerical value; use `win32-get-locale-info' to convert to a
|
|
|
1340 human-readable form.
|
|
|
1341 */
|
|
|
1342 ())
|
|
|
1343 {
|
|
|
1344 return make_int (GetThreadLocale ());
|
|
|
1345 }
|
|
|
1346
|
|
|
1347
|
|
|
1348 DEFUN ("win32-get-default-locale-id", Fwin32_get_default_locale_id, 0, 1, "", /*
|
|
|
1349 "Return Windows locale id for default locale setting.
|
|
|
1350 By default, the system default locale setting is returned; if the optional
|
|
|
1351 parameter USERP is non-nil, the user default locale setting is returned.
|
|
|
1352 This is a numerical value; use `win32-get-locale-info' to convert to a
|
|
|
1353 human-readable form.
|
|
|
1354 */
|
|
|
1355 (userp))
|
|
|
1356 {
|
|
|
1357 if (NILP (userp))
|
|
|
1358 return make_int (GetSystemDefaultLCID ());
|
|
|
1359 return make_int (GetUserDefaultLCID ());
|
|
|
1360 }
|
|
|
1361
|
|
|
1362 DWORD int_from_hex (char * s)
|
|
|
1363 {
|
|
|
1364 DWORD val = 0;
|
|
|
1365 static char hex[] = "0123456789abcdefABCDEF";
|
|
|
1366 char * p;
|
|
|
1367
|
|
|
1368 while (*s && (p = strchr(hex, *s)) != NULL)
|
|
|
1369 {
|
|
|
1370 unsigned digit = p - hex;
|
|
|
1371 if (digit > 15)
|
|
|
1372 digit -= 6;
|
|
|
1373 val = val * 16 + digit;
|
|
|
1374 s++;
|
|
|
1375 }
|
|
|
1376 return val;
|
|
|
1377 }
|
|
|
1378
|
|
|
1379 /* We need to build a global list, since the EnumSystemLocale callback
|
|
|
1380 function isn't given a context pointer. */
|
|
|
1381 Lisp_Object Vwin32_valid_locale_ids;
|
|
|
1382
|
|
|
1383 BOOL CALLBACK enum_locale_fn (LPTSTR localeNum)
|
|
|
1384 {
|
|
|
1385 DWORD id = int_from_hex (localeNum);
|
|
|
1386 Vwin32_valid_locale_ids = Fcons (make_int (id), Vwin32_valid_locale_ids);
|
|
|
1387 return TRUE;
|
|
|
1388 }
|
|
|
1389
|
|
|
1390 DEFUN ("win32-get-valid-locale-ids", Fwin32_get_valid_locale_ids, 0, 0, "", /*
|
|
|
1391 Return list of all valid Windows locale ids.
|
|
|
1392 Each id is a numerical value; use `win32-get-locale-info' to convert to a
|
|
|
1393 human-readable form.
|
|
|
1394 */
|
|
|
1395 ())
|
|
|
1396 {
|
|
|
1397 Vwin32_valid_locale_ids = Qnil;
|
|
|
1398
|
|
|
1399 EnumSystemLocales (enum_locale_fn, LCID_SUPPORTED);
|
|
|
1400
|
|
|
1401 Vwin32_valid_locale_ids = Fnreverse (Vwin32_valid_locale_ids);
|
|
|
1402 return Vwin32_valid_locale_ids;
|
|
|
1403 }
|
|
|
1404
|
|
|
1405
|
|
|
1406 DEFUN ("win32-set-current-locale", Fwin32_set_current_locale, 1, 1, "", /*
|
|
|
1407 Make Windows locale LCID be the current locale setting for Emacs.
|
|
|
1408 If successful, the new locale id is returned, otherwise nil.
|
|
|
1409 */
|
|
|
1410 (lcid))
|
|
|
1411 {
|
|
|
1412 CHECK_INT (lcid);
|
|
|
1413
|
|
|
1414 if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED))
|
|
|
1415 return Qnil;
|
|
|
1416
|
|
|
1417 if (!SetThreadLocale (XINT (lcid)))
|
|
|
1418 return Qnil;
|
|
|
1419
|
|
|
1420 /* Sync with FSF Emacs 19.34.6 note: dwWinThreadId declared in
|
|
|
1421 w32term.h and defined in w32fns.c, both of which are not in current
|
|
|
1422 XEmacs. ### Check what we lose by ifdef'ing out these. --marcpa */
|
|
|
1423 #if 0
|
|
|
1424 /* Need to set input thread locale if present. */
|
|
|
1425 if (dwWinThreadId)
|
|
|
1426 /* Reply is not needed. */
|
|
|
1427 PostThreadMessage (dwWinThreadId, WM_EMACS_SETLOCALE, XINT (lcid), 0);
|
|
|
1428 #endif
|
|
|
1429
|
|
|
1430 return make_int (GetThreadLocale ());
|
|
|
1431 }
|
|
|
1432
|
|
|
1433
|
|
|
1434 void
|
|
|
1435 syms_of_ntproc ()
|
|
|
1436 {
|
|
|
1437 DEFSUBR (Fwin32_short_file_name);
|
|
|
1438 DEFSUBR (Fwin32_long_file_name);
|
|
|
1439 DEFSUBR (Fwin32_set_process_priority);
|
|
|
1440 DEFSUBR (Fwin32_get_locale_info);
|
|
|
1441 DEFSUBR (Fwin32_get_current_locale_id);
|
|
|
1442 DEFSUBR (Fwin32_get_default_locale_id);
|
|
|
1443 DEFSUBR (Fwin32_get_valid_locale_ids);
|
|
|
1444 DEFSUBR (Fwin32_set_current_locale);
|
|
|
1445 }
|
|
|
1446
|
|
|
1447
|
|
|
1448 void
|
|
|
1449 vars_of_ntproc (void)
|
|
|
1450 {
|
|
|
1451 defsymbol (&Qhigh, "high");
|
|
|
1452 defsymbol (&Qlow, "low");
|
|
|
1453
|
|
|
1454 DEFVAR_LISP ("win32-quote-process-args", &Vwin32_quote_process_args /*
|
|
|
1455 Non-nil enables quoting of process arguments to ensure correct parsing.
|
|
|
1456 Because Windows does not directly pass argv arrays to child processes,
|
|
|
1457 programs have to reconstruct the argv array by parsing the command
|
|
|
1458 line string. For an argument to contain a space, it must be enclosed
|
|
|
1459 in double quotes or it will be parsed as multiple arguments.
|
|
|
1460
|
|
|
1461 If the value is a character, that character will be used to escape any
|
|
|
1462 quote characters that appear, otherwise a suitable escape character
|
|
|
1463 will be chosen based on the type of the program.
|
|
|
1464 */ );
|
|
|
1465 Vwin32_quote_process_args = Qt;
|
|
|
1466
|
|
|
1467 DEFVAR_LISP ("win32-start-process-show-window",
|
|
|
1468 &Vwin32_start_process_show_window /*
|
|
|
1469 When nil, processes started via start-process hide their windows.
|
|
|
1470 When non-nil, they show their window in the method of their choice.
|
|
|
1471 */ );
|
|
|
1472 Vwin32_start_process_show_window = Qnil;
|
|
|
1473
|
|
|
1474 DEFVAR_LISP ("win32-start-process-share-console",
|
|
|
1475 &Vwin32_start_process_share_console /*
|
|
|
1476 When nil, processes started via start-process are given a new console.
|
|
|
1477 When non-nil, they share the Emacs console; this has the limitation of
|
|
|
1478 allowing only only DOS subprocess to run at a time (whether started directly
|
|
|
1479 or indirectly by Emacs), and preventing Emacs from cleanly terminating the
|
|
|
1480 subprocess group, but may allow Emacs to interrupt a subprocess that doesn't
|
|
|
1481 otherwise respond to interrupts from Emacs.
|
|
|
1482 */ );
|
|
|
1483 Vwin32_start_process_share_console = Qt;
|
|
|
1484
|
|
|
1485 DEFVAR_LISP ("win32-pipe-read-delay", &Vwin32_pipe_read_delay /*
|
|
|
1486 Forced delay before reading subprocess output.
|
|
|
1487 This is done to improve the buffering of subprocess output, by
|
|
|
1488 avoiding the inefficiency of frequently reading small amounts of data.
|
|
|
1489
|
|
|
1490 If positive, the value is the number of milliseconds to sleep before
|
|
|
1491 reading the subprocess output. If negative, the magnitude is the number
|
|
|
1492 of time slices to wait (effectively boosting the priority of the child
|
|
|
1493 process temporarily). A value of zero disables waiting entirely.
|
|
|
1494 */ );
|
|
|
1495 Vwin32_pipe_read_delay = make_int (50);
|
|
|
1496
|
|
|
1497 #if 0
|
|
|
1498 DEFVAR_LISP ("win32-generate-fake-inodes", &Vwin32_generate_fake_inodes /*
|
|
|
1499 "Non-nil means attempt to fake realistic inode values.
|
|
|
1500 This works by hashing the truename of files, and should detect
|
|
|
1501 aliasing between long and short (8.3 DOS) names, but can have
|
|
|
1502 false positives because of hash collisions. Note that determining
|
|
|
1503 the truename of a file can be slow.
|
|
|
1504 */ );
|
|
|
1505 Vwin32_generate_fake_inodes = Qnil;
|
|
|
1506 #endif
|
|
|
1507 }
|
|
|
1508
|
|
|
1509 /* end of ntproc.c */
|
