Commit | Line | Data |
---|---|---|
e9e23e23 | 1 | /* Process support for GNU Emacs on the Microsoft W32 API. |
22759c72 | 2 | Copyright (C) 1992, 1995 Free Software Foundation, Inc. |
6cdfb6e6 | 3 | |
3b7ad313 EN |
4 | This file is part of GNU Emacs. |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; 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. | |
6cdfb6e6 RS |
20 | |
21 | Drew Bliss Oct 14, 1993 | |
22 | Adapted from alarm.c by Tim Fleehart | |
23 | */ | |
24 | ||
25 | #include <stdio.h> | |
26 | #include <stdlib.h> | |
27 | #include <errno.h> | |
28 | #include <io.h> | |
c519b5e1 | 29 | #include <fcntl.h> |
6cdfb6e6 RS |
30 | #include <signal.h> |
31 | ||
c519b5e1 GV |
32 | /* must include CRT headers *before* config.h */ |
33 | #include "config.h" | |
34 | #undef signal | |
35 | #undef wait | |
36 | #undef spawnve | |
37 | #undef select | |
38 | #undef kill | |
39 | ||
6cdfb6e6 RS |
40 | #include <windows.h> |
41 | ||
42 | #include "lisp.h" | |
489f9371 | 43 | #include "w32.h" |
b2fc9f3d | 44 | #include "w32heap.h" |
6cdfb6e6 | 45 | #include "systime.h" |
3d7eead0 GV |
46 | #include "syswait.h" |
47 | #include "process.h" | |
ef79fbba | 48 | #include "w32term.h" |
3d7eead0 | 49 | |
93fdf2f8 RS |
50 | /* Control whether spawnve quotes arguments as necessary to ensure |
51 | correct parsing by child process. Because not all uses of spawnve | |
52 | are careful about constructing argv arrays, we make this behaviour | |
53 | conditional (off by default). */ | |
fbd6baed | 54 | Lisp_Object Vw32_quote_process_args; |
93fdf2f8 | 55 | |
0ecf7d36 RS |
56 | /* Control whether create_child causes the process' window to be |
57 | hidden. The default is nil. */ | |
fbd6baed | 58 | Lisp_Object Vw32_start_process_show_window; |
0ecf7d36 | 59 | |
b2fc9f3d GV |
60 | /* Control whether create_child causes the process to inherit Emacs' |
61 | console window, or be given a new one of its own. The default is | |
62 | nil, to allow multiple DOS programs to run on Win95. Having separate | |
63 | consoles also allows Emacs to cleanly terminate process groups. */ | |
64 | Lisp_Object Vw32_start_process_share_console; | |
65 | ||
82e7c0a9 AI |
66 | /* Control whether create_child cause the process to inherit Emacs' |
67 | error mode setting. The default is t, to minimize the possibility of | |
68 | subprocesses blocking when accessing unmounted drives. */ | |
69 | Lisp_Object Vw32_start_process_inherit_error_mode; | |
70 | ||
817abdf6 KH |
71 | /* Time to sleep before reading from a subprocess output pipe - this |
72 | avoids the inefficiency of frequently reading small amounts of data. | |
73 | This is primarily necessary for handling DOS processes on Windows 95, | |
e9e23e23 | 74 | but is useful for W32 processes on both Windows 95 and NT as well. */ |
fbd6baed | 75 | Lisp_Object Vw32_pipe_read_delay; |
817abdf6 | 76 | |
0c04091e RS |
77 | /* Control conversion of upper case file names to lower case. |
78 | nil means no, t means yes. */ | |
fbd6baed | 79 | Lisp_Object Vw32_downcase_file_names; |
0c04091e | 80 | |
b2fc9f3d GV |
81 | /* Control whether stat() attempts to generate fake but hopefully |
82 | "accurate" inode values, by hashing the absolute truenames of files. | |
83 | This should detect aliasing between long and short names, but still | |
84 | allows the possibility of hash collisions. */ | |
85 | Lisp_Object Vw32_generate_fake_inodes; | |
86 | ||
87 | /* Control whether stat() attempts to determine file type and link count | |
88 | exactly, at the expense of slower operation. Since true hard links | |
89 | are supported on NTFS volumes, this is only relevant on NT. */ | |
90 | Lisp_Object Vw32_get_true_file_attributes; | |
91 | ||
92 | Lisp_Object Qhigh, Qlow; | |
817abdf6 | 93 | |
3d7eead0 GV |
94 | #ifndef SYS_SIGLIST_DECLARED |
95 | extern char *sys_siglist[]; | |
96 | #endif | |
6cdfb6e6 | 97 | |
6cdfb6e6 | 98 | #ifdef EMACSDEBUG |
c519b5e1 | 99 | void _DebPrint (const char *fmt, ...) |
6cdfb6e6 | 100 | { |
c519b5e1 | 101 | char buf[1024]; |
6cdfb6e6 RS |
102 | va_list args; |
103 | ||
104 | va_start (args, fmt); | |
105 | vsprintf (buf, fmt, args); | |
106 | va_end (args); | |
107 | OutputDebugString (buf); | |
108 | } | |
109 | #endif | |
110 | ||
c519b5e1 | 111 | typedef void (_CALLBACK_ *signal_handler)(int); |
6cdfb6e6 RS |
112 | |
113 | /* Signal handlers...SIG_DFL == 0 so this is initialized correctly. */ | |
114 | static signal_handler sig_handlers[NSIG]; | |
115 | ||
116 | /* Fake signal implementation to record the SIGCHLD handler. */ | |
117 | signal_handler | |
c519b5e1 | 118 | sys_signal (int sig, signal_handler handler) |
6cdfb6e6 RS |
119 | { |
120 | signal_handler old; | |
121 | ||
122 | if (sig != SIGCHLD) | |
123 | { | |
124 | errno = EINVAL; | |
125 | return SIG_ERR; | |
126 | } | |
127 | old = sig_handlers[sig]; | |
128 | sig_handlers[sig] = handler; | |
129 | return old; | |
130 | } | |
131 | ||
c519b5e1 GV |
132 | /* Defined in <process.h> which conflicts with the local copy */ |
133 | #define _P_NOWAIT 1 | |
134 | ||
135 | /* Child process management list. */ | |
136 | int child_proc_count = 0; | |
137 | child_process child_procs[ MAX_CHILDREN ]; | |
138 | child_process *dead_child = NULL; | |
139 | ||
140 | DWORD WINAPI reader_thread (void *arg); | |
141 | ||
6cdfb6e6 | 142 | /* Find an unused process slot. */ |
c519b5e1 | 143 | child_process * |
6cdfb6e6 RS |
144 | new_child (void) |
145 | { | |
146 | child_process *cp; | |
c519b5e1 | 147 | DWORD id; |
6cdfb6e6 RS |
148 | |
149 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) | |
150 | if (!CHILD_ACTIVE (cp)) | |
c519b5e1 GV |
151 | goto Initialise; |
152 | if (child_proc_count == MAX_CHILDREN) | |
153 | return NULL; | |
154 | cp = &child_procs[child_proc_count++]; | |
155 | ||
156 | Initialise: | |
157 | memset (cp, 0, sizeof(*cp)); | |
158 | cp->fd = -1; | |
159 | cp->pid = -1; | |
160 | cp->procinfo.hProcess = NULL; | |
161 | cp->status = STATUS_READ_ERROR; | |
162 | ||
163 | /* use manual reset event so that select() will function properly */ | |
164 | cp->char_avail = CreateEvent (NULL, TRUE, FALSE, NULL); | |
165 | if (cp->char_avail) | |
166 | { | |
167 | cp->char_consumed = CreateEvent (NULL, FALSE, FALSE, NULL); | |
168 | if (cp->char_consumed) | |
169 | { | |
170 | cp->thrd = CreateThread (NULL, 1024, reader_thread, cp, 0, &id); | |
171 | if (cp->thrd) | |
172 | return cp; | |
173 | } | |
174 | } | |
175 | delete_child (cp); | |
176 | return NULL; | |
177 | } | |
178 | ||
179 | void | |
180 | delete_child (child_process *cp) | |
181 | { | |
182 | int i; | |
183 | ||
184 | /* Should not be deleting a child that is still needed. */ | |
185 | for (i = 0; i < MAXDESC; i++) | |
186 | if (fd_info[i].cp == cp) | |
187 | abort (); | |
188 | ||
189 | if (!CHILD_ACTIVE (cp)) | |
190 | return; | |
191 | ||
192 | /* reap thread if necessary */ | |
193 | if (cp->thrd) | |
194 | { | |
195 | DWORD rc; | |
196 | ||
197 | if (GetExitCodeThread (cp->thrd, &rc) && rc == STILL_ACTIVE) | |
198 | { | |
199 | /* let the thread exit cleanly if possible */ | |
200 | cp->status = STATUS_READ_ERROR; | |
201 | SetEvent (cp->char_consumed); | |
202 | if (WaitForSingleObject (cp->thrd, 1000) != WAIT_OBJECT_0) | |
203 | { | |
204 | DebPrint (("delete_child.WaitForSingleObject (thread) failed " | |
205 | "with %lu for fd %ld\n", GetLastError (), cp->fd)); | |
206 | TerminateThread (cp->thrd, 0); | |
207 | } | |
208 | } | |
209 | CloseHandle (cp->thrd); | |
210 | cp->thrd = NULL; | |
211 | } | |
212 | if (cp->char_avail) | |
213 | { | |
214 | CloseHandle (cp->char_avail); | |
215 | cp->char_avail = NULL; | |
216 | } | |
217 | if (cp->char_consumed) | |
218 | { | |
219 | CloseHandle (cp->char_consumed); | |
220 | cp->char_consumed = NULL; | |
221 | } | |
222 | ||
223 | /* update child_proc_count (highest numbered slot in use plus one) */ | |
224 | if (cp == child_procs + child_proc_count - 1) | |
225 | { | |
226 | for (i = child_proc_count-1; i >= 0; i--) | |
227 | if (CHILD_ACTIVE (&child_procs[i])) | |
228 | { | |
229 | child_proc_count = i + 1; | |
230 | break; | |
231 | } | |
232 | } | |
233 | if (i < 0) | |
234 | child_proc_count = 0; | |
6cdfb6e6 RS |
235 | } |
236 | ||
237 | /* Find a child by pid. */ | |
238 | static child_process * | |
239 | find_child_pid (DWORD pid) | |
240 | { | |
241 | child_process *cp; | |
c519b5e1 | 242 | |
6cdfb6e6 RS |
243 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) |
244 | if (CHILD_ACTIVE (cp) && pid == cp->pid) | |
245 | return cp; | |
246 | return NULL; | |
247 | } | |
248 | ||
6cdfb6e6 | 249 | |
c519b5e1 GV |
250 | /* Thread proc for child process and socket reader threads. Each thread |
251 | is normally blocked until woken by select() to check for input by | |
252 | reading one char. When the read completes, char_avail is signalled | |
253 | to wake up the select emulator and the thread blocks itself again. */ | |
6cdfb6e6 RS |
254 | DWORD WINAPI |
255 | reader_thread (void *arg) | |
256 | { | |
257 | child_process *cp; | |
258 | ||
259 | /* Our identity */ | |
260 | cp = (child_process *)arg; | |
261 | ||
262 | /* We have to wait for the go-ahead before we can start */ | |
b2fc9f3d GV |
263 | if (cp == NULL |
264 | || WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0) | |
c519b5e1 GV |
265 | return 1; |
266 | ||
6cdfb6e6 RS |
267 | for (;;) |
268 | { | |
c519b5e1 GV |
269 | int rc; |
270 | ||
271 | rc = _sys_read_ahead (cp->fd); | |
272 | ||
273 | /* The name char_avail is a misnomer - it really just means the | |
274 | read-ahead has completed, whether successfully or not. */ | |
6cdfb6e6 RS |
275 | if (!SetEvent (cp->char_avail)) |
276 | { | |
277 | DebPrint (("reader_thread.SetEvent failed with %lu for fd %ld\n", | |
278 | GetLastError (), cp->fd)); | |
c519b5e1 GV |
279 | return 1; |
280 | } | |
281 | ||
282 | if (rc == STATUS_READ_ERROR) | |
283 | return 1; | |
6cdfb6e6 RS |
284 | |
285 | /* If the read died, the child has died so let the thread die */ | |
c519b5e1 | 286 | if (rc == STATUS_READ_FAILED) |
6cdfb6e6 RS |
287 | break; |
288 | ||
289 | /* Wait until our input is acknowledged before reading again */ | |
290 | if (WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0) | |
291 | { | |
292 | DebPrint (("reader_thread.WaitForSingleObject failed with " | |
293 | "%lu for fd %ld\n", GetLastError (), cp->fd)); | |
294 | break; | |
295 | } | |
296 | } | |
297 | return 0; | |
298 | } | |
299 | ||
b2fc9f3d GV |
300 | /* To avoid Emacs changing directory, we just record here the directory |
301 | the new process should start in. This is set just before calling | |
302 | sys_spawnve, and is not generally valid at any other time. */ | |
303 | static char * process_dir; | |
304 | ||
6cdfb6e6 RS |
305 | static BOOL |
306 | create_child (char *exe, char *cmdline, char *env, | |
c519b5e1 | 307 | int * pPid, child_process *cp) |
6cdfb6e6 | 308 | { |
6cdfb6e6 RS |
309 | STARTUPINFO start; |
310 | SECURITY_ATTRIBUTES sec_attrs; | |
311 | SECURITY_DESCRIPTOR sec_desc; | |
82e7c0a9 | 312 | DWORD flags; |
b2fc9f3d | 313 | char dir[ MAXPATHLEN ]; |
6cdfb6e6 | 314 | |
c519b5e1 | 315 | if (cp == NULL) abort (); |
6cdfb6e6 RS |
316 | |
317 | memset (&start, 0, sizeof (start)); | |
318 | start.cb = sizeof (start); | |
319 | ||
58d4e829 | 320 | #ifdef HAVE_NTGUI |
fbd6baed | 321 | if (NILP (Vw32_start_process_show_window)) |
0ecf7d36 RS |
322 | start.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW; |
323 | else | |
324 | start.dwFlags = STARTF_USESTDHANDLES; | |
58d4e829 GV |
325 | start.wShowWindow = SW_HIDE; |
326 | ||
327 | start.hStdInput = GetStdHandle (STD_INPUT_HANDLE); | |
328 | start.hStdOutput = GetStdHandle (STD_OUTPUT_HANDLE); | |
329 | start.hStdError = GetStdHandle (STD_ERROR_HANDLE); | |
330 | #endif /* HAVE_NTGUI */ | |
331 | ||
6cdfb6e6 RS |
332 | /* Explicitly specify no security */ |
333 | if (!InitializeSecurityDescriptor (&sec_desc, SECURITY_DESCRIPTOR_REVISION)) | |
c519b5e1 | 334 | goto EH_Fail; |
6cdfb6e6 | 335 | if (!SetSecurityDescriptorDacl (&sec_desc, TRUE, NULL, FALSE)) |
c519b5e1 | 336 | goto EH_Fail; |
6cdfb6e6 RS |
337 | sec_attrs.nLength = sizeof (sec_attrs); |
338 | sec_attrs.lpSecurityDescriptor = &sec_desc; | |
339 | sec_attrs.bInheritHandle = FALSE; | |
340 | ||
b2fc9f3d GV |
341 | strcpy (dir, process_dir); |
342 | unixtodos_filename (dir); | |
82e7c0a9 AI |
343 | |
344 | flags = (!NILP (Vw32_start_process_share_console) | |
345 | ? CREATE_NEW_PROCESS_GROUP | |
346 | : CREATE_NEW_CONSOLE); | |
347 | if (NILP (Vw32_start_process_inherit_error_mode)) | |
348 | flags |= CREATE_DEFAULT_ERROR_MODE; | |
6cdfb6e6 | 349 | if (!CreateProcess (exe, cmdline, &sec_attrs, NULL, TRUE, |
82e7c0a9 | 350 | flags, env, dir, &start, &cp->procinfo)) |
c519b5e1 GV |
351 | goto EH_Fail; |
352 | ||
353 | cp->pid = (int) cp->procinfo.dwProcessId; | |
354 | ||
355 | /* Hack for Windows 95, which assigns large (ie negative) pids */ | |
356 | if (cp->pid < 0) | |
357 | cp->pid = -cp->pid; | |
358 | ||
359 | /* pid must fit in a Lisp_Int */ | |
360 | cp->pid = (cp->pid & VALMASK); | |
361 | ||
c519b5e1 | 362 | *pPid = cp->pid; |
b2fc9f3d | 363 | |
6cdfb6e6 | 364 | return TRUE; |
b2fc9f3d | 365 | |
6cdfb6e6 | 366 | EH_Fail: |
c519b5e1 | 367 | DebPrint (("create_child.CreateProcess failed: %ld\n", GetLastError());); |
6cdfb6e6 RS |
368 | return FALSE; |
369 | } | |
370 | ||
371 | /* create_child doesn't know what emacs' file handle will be for waiting | |
372 | on output from the child, so we need to make this additional call | |
373 | to register the handle with the process | |
374 | This way the select emulator knows how to match file handles with | |
375 | entries in child_procs. */ | |
376 | void | |
377 | register_child (int pid, int fd) | |
378 | { | |
379 | child_process *cp; | |
380 | ||
381 | cp = find_child_pid (pid); | |
382 | if (cp == NULL) | |
383 | { | |
384 | DebPrint (("register_child unable to find pid %lu\n", pid)); | |
385 | return; | |
386 | } | |
387 | ||
388 | #ifdef FULL_DEBUG | |
389 | DebPrint (("register_child registered fd %d with pid %lu\n", fd, pid)); | |
390 | #endif | |
391 | ||
392 | cp->fd = fd; | |
6cdfb6e6 | 393 | |
c519b5e1 GV |
394 | /* thread is initially blocked until select is called; set status so |
395 | that select will release thread */ | |
396 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
397 | ||
398 | /* attach child_process to fd_info */ | |
399 | if (fd_info[fd].cp != NULL) | |
6cdfb6e6 | 400 | { |
c519b5e1 GV |
401 | DebPrint (("register_child: fd_info[%d] apparently in use!\n", fd)); |
402 | abort (); | |
6cdfb6e6 | 403 | } |
c519b5e1 GV |
404 | |
405 | fd_info[fd].cp = cp; | |
6cdfb6e6 RS |
406 | } |
407 | ||
408 | /* When a process dies its pipe will break so the reader thread will | |
409 | signal failure to the select emulator. | |
410 | The select emulator then calls this routine to clean up. | |
411 | Since the thread signaled failure we can assume it is exiting. */ | |
412 | static void | |
c519b5e1 | 413 | reap_subprocess (child_process *cp) |
6cdfb6e6 | 414 | { |
c519b5e1 | 415 | if (cp->procinfo.hProcess) |
6cdfb6e6 | 416 | { |
c519b5e1 | 417 | /* Reap the process */ |
b2fc9f3d GV |
418 | #ifdef FULL_DEBUG |
419 | /* Process should have already died before we are called. */ | |
420 | if (WaitForSingleObject (cp->procinfo.hProcess, 0) != WAIT_OBJECT_0) | |
421 | DebPrint (("reap_subprocess: child fpr fd %d has not died yet!", cp->fd)); | |
422 | #endif | |
c519b5e1 GV |
423 | CloseHandle (cp->procinfo.hProcess); |
424 | cp->procinfo.hProcess = NULL; | |
425 | CloseHandle (cp->procinfo.hThread); | |
426 | cp->procinfo.hThread = NULL; | |
6cdfb6e6 | 427 | } |
c519b5e1 GV |
428 | |
429 | /* For asynchronous children, the child_proc resources will be freed | |
430 | when the last pipe read descriptor is closed; for synchronous | |
431 | children, we must explicitly free the resources now because | |
432 | register_child has not been called. */ | |
433 | if (cp->fd == -1) | |
434 | delete_child (cp); | |
6cdfb6e6 RS |
435 | } |
436 | ||
437 | /* Wait for any of our existing child processes to die | |
438 | When it does, close its handle | |
439 | Return the pid and fill in the status if non-NULL. */ | |
22759c72 | 440 | |
6cdfb6e6 | 441 | int |
c519b5e1 | 442 | sys_wait (int *status) |
6cdfb6e6 RS |
443 | { |
444 | DWORD active, retval; | |
445 | int nh; | |
c519b5e1 | 446 | int pid; |
6cdfb6e6 RS |
447 | child_process *cp, *cps[MAX_CHILDREN]; |
448 | HANDLE wait_hnd[MAX_CHILDREN]; | |
449 | ||
450 | nh = 0; | |
451 | if (dead_child != NULL) | |
452 | { | |
453 | /* We want to wait for a specific child */ | |
c519b5e1 | 454 | wait_hnd[nh] = dead_child->procinfo.hProcess; |
6cdfb6e6 | 455 | cps[nh] = dead_child; |
c519b5e1 | 456 | if (!wait_hnd[nh]) abort (); |
6cdfb6e6 | 457 | nh++; |
b2fc9f3d GV |
458 | active = 0; |
459 | goto get_result; | |
6cdfb6e6 RS |
460 | } |
461 | else | |
462 | { | |
463 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) | |
c519b5e1 GV |
464 | /* some child_procs might be sockets; ignore them */ |
465 | if (CHILD_ACTIVE (cp) && cp->procinfo.hProcess) | |
6cdfb6e6 | 466 | { |
c519b5e1 | 467 | wait_hnd[nh] = cp->procinfo.hProcess; |
6cdfb6e6 RS |
468 | cps[nh] = cp; |
469 | nh++; | |
470 | } | |
471 | } | |
472 | ||
473 | if (nh == 0) | |
474 | { | |
475 | /* Nothing to wait on, so fail */ | |
476 | errno = ECHILD; | |
477 | return -1; | |
478 | } | |
b2fc9f3d GV |
479 | |
480 | do | |
481 | { | |
482 | /* Check for quit about once a second. */ | |
483 | QUIT; | |
484 | active = WaitForMultipleObjects (nh, wait_hnd, FALSE, 1000); | |
485 | } while (active == WAIT_TIMEOUT); | |
486 | ||
6cdfb6e6 RS |
487 | if (active == WAIT_FAILED) |
488 | { | |
489 | errno = EBADF; | |
490 | return -1; | |
491 | } | |
b2fc9f3d GV |
492 | else if (active >= WAIT_OBJECT_0 |
493 | && active < WAIT_OBJECT_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
494 | { |
495 | active -= WAIT_OBJECT_0; | |
496 | } | |
b2fc9f3d GV |
497 | else if (active >= WAIT_ABANDONED_0 |
498 | && active < WAIT_ABANDONED_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
499 | { |
500 | active -= WAIT_ABANDONED_0; | |
501 | } | |
b2fc9f3d GV |
502 | else |
503 | abort (); | |
504 | ||
505 | get_result: | |
6cdfb6e6 RS |
506 | if (!GetExitCodeProcess (wait_hnd[active], &retval)) |
507 | { | |
508 | DebPrint (("Wait.GetExitCodeProcess failed with %lu\n", | |
509 | GetLastError ())); | |
510 | retval = 1; | |
511 | } | |
512 | if (retval == STILL_ACTIVE) | |
513 | { | |
514 | /* Should never happen */ | |
515 | DebPrint (("Wait.WaitForMultipleObjects returned an active process\n")); | |
516 | errno = EINVAL; | |
517 | return -1; | |
518 | } | |
bc69349b RS |
519 | |
520 | /* Massage the exit code from the process to match the format expected | |
8e6208c5 | 521 | by the WIFSTOPPED et al macros in syswait.h. Only WIFSIGNALED and |
bc69349b RS |
522 | WIFEXITED are supported; WIFSTOPPED doesn't make sense under NT. */ |
523 | ||
524 | if (retval == STATUS_CONTROL_C_EXIT) | |
525 | retval = SIGINT; | |
526 | else | |
527 | retval <<= 8; | |
c519b5e1 | 528 | |
6cdfb6e6 | 529 | cp = cps[active]; |
c519b5e1 GV |
530 | pid = cp->pid; |
531 | #ifdef FULL_DEBUG | |
532 | DebPrint (("Wait signaled with process pid %d\n", cp->pid)); | |
533 | #endif | |
22759c72 | 534 | |
6cdfb6e6 RS |
535 | if (status) |
536 | { | |
22759c72 KH |
537 | *status = retval; |
538 | } | |
539 | else if (synch_process_alive) | |
540 | { | |
541 | synch_process_alive = 0; | |
22759c72 | 542 | |
3d7eead0 GV |
543 | /* Report the status of the synchronous process. */ |
544 | if (WIFEXITED (retval)) | |
545 | synch_process_retcode = WRETCODE (retval); | |
546 | else if (WIFSIGNALED (retval)) | |
547 | { | |
548 | int code = WTERMSIG (retval); | |
549 | char *signame = 0; | |
550 | ||
551 | if (code < NSIG) | |
552 | { | |
553 | /* Suppress warning if the table has const char *. */ | |
554 | signame = (char *) sys_siglist[code]; | |
555 | } | |
556 | if (signame == 0) | |
557 | signame = "unknown"; | |
558 | ||
559 | synch_process_death = signame; | |
560 | } | |
c519b5e1 GV |
561 | |
562 | reap_subprocess (cp); | |
6cdfb6e6 | 563 | } |
b2fc9f3d GV |
564 | |
565 | reap_subprocess (cp); | |
6cdfb6e6 | 566 | |
c519b5e1 | 567 | return pid; |
6cdfb6e6 RS |
568 | } |
569 | ||
b2fc9f3d GV |
570 | void |
571 | w32_executable_type (char * filename, int * is_dos_app, int * is_cygnus_app) | |
817abdf6 | 572 | { |
b2fc9f3d GV |
573 | file_data executable; |
574 | char * p; | |
575 | ||
576 | /* Default values in case we can't tell for sure. */ | |
577 | *is_dos_app = FALSE; | |
578 | *is_cygnus_app = FALSE; | |
579 | ||
580 | if (!open_input_file (&executable, filename)) | |
581 | return; | |
817abdf6 | 582 | |
b2fc9f3d GV |
583 | p = strrchr (filename, '.'); |
584 | ||
585 | /* We can only identify DOS .com programs from the extension. */ | |
586 | if (p && stricmp (p, ".com") == 0) | |
587 | *is_dos_app = TRUE; | |
588 | else if (p && (stricmp (p, ".bat") == 0 | |
589 | || stricmp (p, ".cmd") == 0)) | |
590 | { | |
591 | /* A DOS shell script - it appears that CreateProcess is happy to | |
592 | accept this (somewhat surprisingly); presumably it looks at | |
593 | COMSPEC to determine what executable to actually invoke. | |
594 | Therefore, we have to do the same here as well. */ | |
595 | /* Actually, I think it uses the program association for that | |
596 | extension, which is defined in the registry. */ | |
597 | p = egetenv ("COMSPEC"); | |
598 | if (p) | |
599 | w32_executable_type (p, is_dos_app, is_cygnus_app); | |
600 | } | |
601 | else | |
817abdf6 | 602 | { |
b2fc9f3d GV |
603 | /* Look for DOS .exe signature - if found, we must also check that |
604 | it isn't really a 16- or 32-bit Windows exe, since both formats | |
605 | start with a DOS program stub. Note that 16-bit Windows | |
606 | executables use the OS/2 1.x format. */ | |
817abdf6 | 607 | |
b2fc9f3d GV |
608 | IMAGE_DOS_HEADER * dos_header; |
609 | IMAGE_NT_HEADERS * nt_header; | |
610 | ||
611 | dos_header = (PIMAGE_DOS_HEADER) executable.file_base; | |
612 | if (dos_header->e_magic != IMAGE_DOS_SIGNATURE) | |
613 | goto unwind; | |
614 | ||
615 | nt_header = (PIMAGE_NT_HEADERS) ((char *) dos_header + dos_header->e_lfanew); | |
616 | ||
ef79fbba | 617 | if ((char *) nt_header > (char *) dos_header + executable.size) |
817abdf6 | 618 | { |
b2fc9f3d GV |
619 | /* Some dos headers (pkunzip) have bogus e_lfanew fields. */ |
620 | *is_dos_app = TRUE; | |
621 | } | |
622 | else if (nt_header->Signature != IMAGE_NT_SIGNATURE | |
623 | && LOWORD (nt_header->Signature) != IMAGE_OS2_SIGNATURE) | |
624 | { | |
625 | *is_dos_app = TRUE; | |
626 | } | |
627 | else if (nt_header->Signature == IMAGE_NT_SIGNATURE) | |
628 | { | |
629 | /* Look for cygwin.dll in DLL import list. */ | |
630 | IMAGE_DATA_DIRECTORY import_dir = | |
631 | nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT]; | |
632 | IMAGE_IMPORT_DESCRIPTOR * imports; | |
633 | IMAGE_SECTION_HEADER * section; | |
634 | ||
635 | section = rva_to_section (import_dir.VirtualAddress, nt_header); | |
636 | imports = RVA_TO_PTR (import_dir.VirtualAddress, section, executable); | |
637 | ||
638 | for ( ; imports->Name; imports++) | |
639 | { | |
640 | char * dllname = RVA_TO_PTR (imports->Name, section, executable); | |
641 | ||
a7325b56 AI |
642 | /* The exact name of the cygwin dll has changed with |
643 | various releases, but hopefully this will be reasonably | |
644 | future proof. */ | |
645 | if (strncmp (dllname, "cygwin", 6) == 0) | |
b2fc9f3d GV |
646 | { |
647 | *is_cygnus_app = TRUE; | |
648 | break; | |
649 | } | |
650 | } | |
651 | } | |
817abdf6 | 652 | } |
b2fc9f3d GV |
653 | |
654 | unwind: | |
655 | close_file_data (&executable); | |
817abdf6 KH |
656 | } |
657 | ||
d9709fde GV |
658 | int |
659 | compare_env (const char **strp1, const char **strp2) | |
660 | { | |
661 | const char *str1 = *strp1, *str2 = *strp2; | |
662 | ||
663 | while (*str1 && *str2 && *str1 != '=' && *str2 != '=') | |
664 | { | |
665 | if (tolower (*str1) > tolower (*str2)) | |
666 | return 1; | |
667 | else if (tolower (*str1) < tolower (*str2)) | |
668 | return -1; | |
669 | str1++, str2++; | |
670 | } | |
671 | ||
672 | if (*str1 == '=' && *str2 == '=') | |
673 | return 0; | |
674 | else if (*str1 == '=') | |
675 | return -1; | |
676 | else | |
677 | return 1; | |
678 | } | |
679 | ||
680 | void | |
681 | merge_and_sort_env (char **envp1, char **envp2, char **new_envp) | |
682 | { | |
683 | char **optr, **nptr; | |
684 | int num; | |
685 | ||
686 | nptr = new_envp; | |
687 | optr = envp1; | |
688 | while (*optr) | |
689 | *nptr++ = *optr++; | |
690 | num = optr - envp1; | |
691 | ||
692 | optr = envp2; | |
693 | while (*optr) | |
694 | *nptr++ = *optr++; | |
695 | num += optr - envp2; | |
696 | ||
697 | qsort (new_envp, num, sizeof (char *), compare_env); | |
698 | ||
699 | *nptr = NULL; | |
700 | } | |
6cdfb6e6 RS |
701 | |
702 | /* When a new child process is created we need to register it in our list, | |
703 | so intercept spawn requests. */ | |
704 | int | |
c519b5e1 | 705 | sys_spawnve (int mode, char *cmdname, char **argv, char **envp) |
6cdfb6e6 | 706 | { |
0a4de642 | 707 | Lisp_Object program, full; |
6cdfb6e6 | 708 | char *cmdline, *env, *parg, **targ; |
d9709fde | 709 | int arglen, numenv; |
c519b5e1 GV |
710 | int pid; |
711 | child_process *cp; | |
b2fc9f3d GV |
712 | int is_dos_app, is_cygnus_app; |
713 | int do_quoting = 0; | |
714 | char escape_char; | |
d9709fde GV |
715 | /* We pass our process ID to our children by setting up an environment |
716 | variable in their environment. */ | |
717 | char ppid_env_var_buffer[64]; | |
718 | char *extra_env[] = {ppid_env_var_buffer, NULL}; | |
719 | ||
c519b5e1 GV |
720 | /* We don't care about the other modes */ |
721 | if (mode != _P_NOWAIT) | |
722 | { | |
723 | errno = EINVAL; | |
724 | return -1; | |
725 | } | |
0a4de642 RS |
726 | |
727 | /* Handle executable names without an executable suffix. */ | |
728 | program = make_string (cmdname, strlen (cmdname)); | |
729 | if (NILP (Ffile_executable_p (program))) | |
730 | { | |
731 | struct gcpro gcpro1; | |
732 | ||
733 | full = Qnil; | |
734 | GCPRO1 (program); | |
735 | openp (Vexec_path, program, EXEC_SUFFIXES, &full, 1); | |
736 | UNGCPRO; | |
737 | if (NILP (full)) | |
738 | { | |
739 | errno = EINVAL; | |
740 | return -1; | |
741 | } | |
b2fc9f3d | 742 | program = full; |
0a4de642 RS |
743 | } |
744 | ||
b2fc9f3d GV |
745 | /* make sure argv[0] and cmdname are both in DOS format */ |
746 | cmdname = XSTRING (program)->data; | |
c519b5e1 GV |
747 | unixtodos_filename (cmdname); |
748 | argv[0] = cmdname; | |
817abdf6 | 749 | |
ef79fbba | 750 | /* Determine whether program is a 16-bit DOS executable, or a w32 |
b2fc9f3d GV |
751 | executable that is implicitly linked to the Cygnus dll (implying it |
752 | was compiled with the Cygnus GNU toolchain and hence relies on | |
753 | cygwin.dll to parse the command line - we use this to decide how to | |
754 | escape quote chars in command line args that must be quoted). */ | |
755 | w32_executable_type (cmdname, &is_dos_app, &is_cygnus_app); | |
756 | ||
757 | /* On Windows 95, if cmdname is a DOS app, we invoke a helper | |
758 | application to start it by specifying the helper app as cmdname, | |
759 | while leaving the real app name as argv[0]. */ | |
760 | if (is_dos_app) | |
817abdf6 | 761 | { |
b2fc9f3d GV |
762 | cmdname = alloca (MAXPATHLEN); |
763 | if (egetenv ("CMDPROXY")) | |
764 | strcpy (cmdname, egetenv ("CMDPROXY")); | |
765 | else | |
766 | { | |
767 | strcpy (cmdname, XSTRING (Vinvocation_directory)->data); | |
768 | strcat (cmdname, "cmdproxy.exe"); | |
769 | } | |
770 | unixtodos_filename (cmdname); | |
817abdf6 | 771 | } |
6cdfb6e6 RS |
772 | |
773 | /* we have to do some conjuring here to put argv and envp into the | |
774 | form CreateProcess wants... argv needs to be a space separated/null | |
775 | terminated list of parameters, and envp is a null | |
776 | separated/double-null terminated list of parameters. | |
c519b5e1 | 777 | |
b2fc9f3d GV |
778 | Additionally, zero-length args and args containing whitespace or |
779 | quote chars need to be wrapped in double quotes - for this to work, | |
780 | embedded quotes need to be escaped as well. The aim is to ensure | |
781 | the child process reconstructs the argv array we start with | |
782 | exactly, so we treat quotes at the beginning and end of arguments | |
783 | as embedded quotes. | |
784 | ||
ef79fbba | 785 | The w32 GNU-based library from Cygnus doubles quotes to escape |
b2fc9f3d GV |
786 | them, while MSVC uses backslash for escaping. (Actually the MSVC |
787 | startup code does attempt to recognise doubled quotes and accept | |
788 | them, but gets it wrong and ends up requiring three quotes to get a | |
789 | single embedded quote!) So by default we decide whether to use | |
790 | quote or backslash as the escape character based on whether the | |
791 | binary is apparently a Cygnus compiled app. | |
792 | ||
793 | Note that using backslash to escape embedded quotes requires | |
794 | additional special handling if an embedded quote is already | |
795 | preceeded by backslash, or if an arg requiring quoting ends with | |
796 | backslash. In such cases, the run of escape characters needs to be | |
797 | doubled. For consistency, we apply this special handling as long | |
798 | as the escape character is not quote. | |
799 | ||
800 | Since we have no idea how large argv and envp are likely to be we | |
801 | figure out list lengths on the fly and allocate them. */ | |
802 | ||
803 | if (!NILP (Vw32_quote_process_args)) | |
804 | { | |
805 | do_quoting = 1; | |
806 | /* Override escape char by binding w32-quote-process-args to | |
807 | desired character, or use t for auto-selection. */ | |
808 | if (INTEGERP (Vw32_quote_process_args)) | |
809 | escape_char = XINT (Vw32_quote_process_args); | |
810 | else | |
811 | escape_char = is_cygnus_app ? '"' : '\\'; | |
812 | } | |
6cdfb6e6 RS |
813 | |
814 | /* do argv... */ | |
815 | arglen = 0; | |
816 | targ = argv; | |
817 | while (*targ) | |
818 | { | |
c519b5e1 | 819 | char * p = *targ; |
b2fc9f3d GV |
820 | int need_quotes = 0; |
821 | int escape_char_run = 0; | |
c519b5e1 GV |
822 | |
823 | if (*p == 0) | |
b2fc9f3d GV |
824 | need_quotes = 1; |
825 | for ( ; *p; p++) | |
826 | { | |
827 | if (*p == '"') | |
828 | { | |
829 | /* allow for embedded quotes to be escaped */ | |
830 | arglen++; | |
831 | need_quotes = 1; | |
832 | /* handle the case where the embedded quote is already escaped */ | |
833 | if (escape_char_run > 0) | |
834 | { | |
835 | /* To preserve the arg exactly, we need to double the | |
836 | preceding escape characters (plus adding one to | |
837 | escape the quote character itself). */ | |
838 | arglen += escape_char_run; | |
839 | } | |
840 | } | |
841 | else if (*p == ' ' || *p == '\t') | |
842 | { | |
843 | need_quotes = 1; | |
844 | } | |
845 | ||
846 | if (*p == escape_char && escape_char != '"') | |
847 | escape_char_run++; | |
848 | else | |
849 | escape_char_run = 0; | |
850 | } | |
851 | if (need_quotes) | |
852 | { | |
853 | arglen += 2; | |
854 | /* handle the case where the arg ends with an escape char - we | |
855 | must not let the enclosing quote be escaped. */ | |
856 | if (escape_char_run > 0) | |
857 | arglen += escape_char_run; | |
858 | } | |
6cdfb6e6 RS |
859 | arglen += strlen (*targ++) + 1; |
860 | } | |
c519b5e1 | 861 | cmdline = alloca (arglen); |
6cdfb6e6 RS |
862 | targ = argv; |
863 | parg = cmdline; | |
864 | while (*targ) | |
865 | { | |
c519b5e1 | 866 | char * p = *targ; |
b2fc9f3d | 867 | int need_quotes = 0; |
c519b5e1 GV |
868 | |
869 | if (*p == 0) | |
b2fc9f3d | 870 | need_quotes = 1; |
93fdf2f8 | 871 | |
b2fc9f3d | 872 | if (do_quoting) |
93fdf2f8 | 873 | { |
93fdf2f8 RS |
874 | for ( ; *p; p++) |
875 | if (*p == ' ' || *p == '\t' || *p == '"') | |
b2fc9f3d | 876 | need_quotes = 1; |
93fdf2f8 | 877 | } |
b2fc9f3d | 878 | if (need_quotes) |
c519b5e1 | 879 | { |
b2fc9f3d | 880 | int escape_char_run = 0; |
c519b5e1 GV |
881 | char * first; |
882 | char * last; | |
883 | ||
884 | p = *targ; | |
885 | first = p; | |
886 | last = p + strlen (p) - 1; | |
887 | *parg++ = '"'; | |
b2fc9f3d GV |
888 | #if 0 |
889 | /* This version does not escape quotes if they occur at the | |
890 | beginning or end of the arg - this could lead to incorrect | |
891 | behaviour when the arg itself represents a command line | |
892 | containing quoted args. I believe this was originally done | |
893 | as a hack to make some things work, before | |
894 | `w32-quote-process-args' was added. */ | |
c519b5e1 GV |
895 | while (*p) |
896 | { | |
897 | if (*p == '"' && p > first && p < last) | |
b2fc9f3d | 898 | *parg++ = escape_char; /* escape embedded quotes */ |
c519b5e1 GV |
899 | *parg++ = *p++; |
900 | } | |
b2fc9f3d GV |
901 | #else |
902 | for ( ; *p; p++) | |
903 | { | |
904 | if (*p == '"') | |
905 | { | |
906 | /* double preceding escape chars if any */ | |
907 | while (escape_char_run > 0) | |
908 | { | |
909 | *parg++ = escape_char; | |
910 | escape_char_run--; | |
911 | } | |
912 | /* escape all quote chars, even at beginning or end */ | |
913 | *parg++ = escape_char; | |
914 | } | |
915 | *parg++ = *p; | |
916 | ||
917 | if (*p == escape_char && escape_char != '"') | |
918 | escape_char_run++; | |
919 | else | |
920 | escape_char_run = 0; | |
921 | } | |
922 | /* double escape chars before enclosing quote */ | |
923 | while (escape_char_run > 0) | |
924 | { | |
925 | *parg++ = escape_char; | |
926 | escape_char_run--; | |
927 | } | |
928 | #endif | |
c519b5e1 GV |
929 | *parg++ = '"'; |
930 | } | |
931 | else | |
932 | { | |
933 | strcpy (parg, *targ); | |
934 | parg += strlen (*targ); | |
935 | } | |
6cdfb6e6 | 936 | *parg++ = ' '; |
c519b5e1 | 937 | targ++; |
6cdfb6e6 RS |
938 | } |
939 | *--parg = '\0'; | |
940 | ||
941 | /* and envp... */ | |
942 | arglen = 1; | |
943 | targ = envp; | |
d9709fde | 944 | numenv = 1; /* for end null */ |
6cdfb6e6 RS |
945 | while (*targ) |
946 | { | |
947 | arglen += strlen (*targ++) + 1; | |
d9709fde | 948 | numenv++; |
6cdfb6e6 | 949 | } |
d9709fde | 950 | /* extra env vars... */ |
a5b56dcd | 951 | sprintf (ppid_env_var_buffer, "EM_PARENT_PROCESS_ID=%d", |
6cdfb6e6 RS |
952 | GetCurrentProcessId ()); |
953 | arglen += strlen (ppid_env_var_buffer) + 1; | |
d9709fde | 954 | numenv++; |
6cdfb6e6 | 955 | |
d9709fde GV |
956 | /* merge env passed in and extra env into one, and sort it. */ |
957 | targ = (char **) alloca (numenv * sizeof (char *)); | |
958 | merge_and_sort_env (envp, extra_env, targ); | |
959 | ||
960 | /* concatenate env entries. */ | |
c519b5e1 | 961 | env = alloca (arglen); |
6cdfb6e6 RS |
962 | parg = env; |
963 | while (*targ) | |
964 | { | |
965 | strcpy (parg, *targ); | |
966 | parg += strlen (*targ++); | |
967 | *parg++ = '\0'; | |
968 | } | |
6cdfb6e6 RS |
969 | *parg++ = '\0'; |
970 | *parg = '\0'; | |
c519b5e1 GV |
971 | |
972 | cp = new_child (); | |
973 | if (cp == NULL) | |
974 | { | |
975 | errno = EAGAIN; | |
976 | return -1; | |
977 | } | |
6cdfb6e6 RS |
978 | |
979 | /* Now create the process. */ | |
c519b5e1 | 980 | if (!create_child (cmdname, cmdline, env, &pid, cp)) |
6cdfb6e6 | 981 | { |
c519b5e1 | 982 | delete_child (cp); |
6cdfb6e6 | 983 | errno = ENOEXEC; |
c519b5e1 | 984 | return -1; |
6cdfb6e6 RS |
985 | } |
986 | ||
c519b5e1 | 987 | return pid; |
6cdfb6e6 RS |
988 | } |
989 | ||
990 | /* Emulate the select call | |
991 | Wait for available input on any of the given rfds, or timeout if | |
992 | a timeout is given and no input is detected | |
b2fc9f3d GV |
993 | wfds and efds are not supported and must be NULL. |
994 | ||
995 | For simplicity, we detect the death of child processes here and | |
996 | synchronously call the SIGCHLD handler. Since it is possible for | |
997 | children to be created without a corresponding pipe handle from which | |
998 | to read output, we wait separately on the process handles as well as | |
999 | the char_avail events for each process pipe. We only call | |
86143765 RS |
1000 | wait/reap_process when the process actually terminates. |
1001 | ||
1002 | To reduce the number of places in which Emacs can be hung such that | |
1003 | C-g is not able to interrupt it, we always wait on interrupt_handle | |
1004 | (which is signalled by the input thread when C-g is detected). If we | |
1005 | detect that we were woken up by C-g, we return -1 with errno set to | |
1006 | EINTR as on Unix. */ | |
6cdfb6e6 RS |
1007 | |
1008 | /* From ntterm.c */ | |
1009 | extern HANDLE keyboard_handle; | |
86143765 RS |
1010 | |
1011 | /* From w32xfns.c */ | |
1012 | extern HANDLE interrupt_handle; | |
1013 | ||
6cdfb6e6 RS |
1014 | /* From process.c */ |
1015 | extern int proc_buffered_char[]; | |
1016 | ||
1017 | int | |
22759c72 KH |
1018 | sys_select (int nfds, SELECT_TYPE *rfds, SELECT_TYPE *wfds, SELECT_TYPE *efds, |
1019 | EMACS_TIME *timeout) | |
6cdfb6e6 RS |
1020 | { |
1021 | SELECT_TYPE orfds; | |
b2fc9f3d GV |
1022 | DWORD timeout_ms, start_time; |
1023 | int i, nh, nc, nr; | |
6cdfb6e6 | 1024 | DWORD active; |
b2fc9f3d GV |
1025 | child_process *cp, *cps[MAX_CHILDREN]; |
1026 | HANDLE wait_hnd[MAXDESC + MAX_CHILDREN]; | |
c519b5e1 | 1027 | int fdindex[MAXDESC]; /* mapping from wait handles back to descriptors */ |
6cdfb6e6 | 1028 | |
b2fc9f3d GV |
1029 | timeout_ms = timeout ? (timeout->tv_sec * 1000 + timeout->tv_usec / 1000) : INFINITE; |
1030 | ||
6cdfb6e6 RS |
1031 | /* If the descriptor sets are NULL but timeout isn't, then just Sleep. */ |
1032 | if (rfds == NULL && wfds == NULL && efds == NULL && timeout != NULL) | |
1033 | { | |
b2fc9f3d | 1034 | Sleep (timeout_ms); |
6cdfb6e6 RS |
1035 | return 0; |
1036 | } | |
1037 | ||
1038 | /* Otherwise, we only handle rfds, so fail otherwise. */ | |
1039 | if (rfds == NULL || wfds != NULL || efds != NULL) | |
1040 | { | |
1041 | errno = EINVAL; | |
1042 | return -1; | |
1043 | } | |
1044 | ||
1045 | orfds = *rfds; | |
1046 | FD_ZERO (rfds); | |
1047 | nr = 0; | |
86143765 RS |
1048 | |
1049 | /* Always wait on interrupt_handle, to detect C-g (quit). */ | |
1050 | wait_hnd[0] = interrupt_handle; | |
1051 | fdindex[0] = -1; | |
6cdfb6e6 | 1052 | |
b2fc9f3d | 1053 | /* Build a list of pipe handles to wait on. */ |
86143765 | 1054 | nh = 1; |
6cdfb6e6 RS |
1055 | for (i = 0; i < nfds; i++) |
1056 | if (FD_ISSET (i, &orfds)) | |
1057 | { | |
1058 | if (i == 0) | |
1059 | { | |
c519b5e1 GV |
1060 | if (keyboard_handle) |
1061 | { | |
1062 | /* Handle stdin specially */ | |
1063 | wait_hnd[nh] = keyboard_handle; | |
1064 | fdindex[nh] = i; | |
1065 | nh++; | |
1066 | } | |
6cdfb6e6 RS |
1067 | |
1068 | /* Check for any emacs-generated input in the queue since | |
1069 | it won't be detected in the wait */ | |
1070 | if (detect_input_pending ()) | |
1071 | { | |
1072 | FD_SET (i, rfds); | |
c519b5e1 | 1073 | return 1; |
6cdfb6e6 RS |
1074 | } |
1075 | } | |
1076 | else | |
1077 | { | |
c519b5e1 GV |
1078 | /* Child process and socket input */ |
1079 | cp = fd_info[i].cp; | |
6cdfb6e6 RS |
1080 | if (cp) |
1081 | { | |
c519b5e1 GV |
1082 | int current_status = cp->status; |
1083 | ||
1084 | if (current_status == STATUS_READ_ACKNOWLEDGED) | |
1085 | { | |
1086 | /* Tell reader thread which file handle to use. */ | |
1087 | cp->fd = i; | |
1088 | /* Wake up the reader thread for this process */ | |
1089 | cp->status = STATUS_READ_READY; | |
1090 | if (!SetEvent (cp->char_consumed)) | |
1091 | DebPrint (("nt_select.SetEvent failed with " | |
1092 | "%lu for fd %ld\n", GetLastError (), i)); | |
1093 | } | |
1094 | ||
1095 | #ifdef CHECK_INTERLOCK | |
1096 | /* slightly crude cross-checking of interlock between threads */ | |
1097 | ||
1098 | current_status = cp->status; | |
1099 | if (WaitForSingleObject (cp->char_avail, 0) == WAIT_OBJECT_0) | |
1100 | { | |
1101 | /* char_avail has been signalled, so status (which may | |
1102 | have changed) should indicate read has completed | |
1103 | but has not been acknowledged. */ | |
1104 | current_status = cp->status; | |
b2fc9f3d GV |
1105 | if (current_status != STATUS_READ_SUCCEEDED |
1106 | && current_status != STATUS_READ_FAILED) | |
c519b5e1 GV |
1107 | DebPrint (("char_avail set, but read not completed: status %d\n", |
1108 | current_status)); | |
1109 | } | |
1110 | else | |
1111 | { | |
1112 | /* char_avail has not been signalled, so status should | |
1113 | indicate that read is in progress; small possibility | |
1114 | that read has completed but event wasn't yet signalled | |
1115 | when we tested it (because a context switch occurred | |
1116 | or if running on separate CPUs). */ | |
b2fc9f3d GV |
1117 | if (current_status != STATUS_READ_READY |
1118 | && current_status != STATUS_READ_IN_PROGRESS | |
1119 | && current_status != STATUS_READ_SUCCEEDED | |
1120 | && current_status != STATUS_READ_FAILED) | |
c519b5e1 GV |
1121 | DebPrint (("char_avail reset, but read status is bad: %d\n", |
1122 | current_status)); | |
1123 | } | |
1124 | #endif | |
1125 | wait_hnd[nh] = cp->char_avail; | |
1126 | fdindex[nh] = i; | |
1127 | if (!wait_hnd[nh]) abort (); | |
1128 | nh++; | |
6cdfb6e6 RS |
1129 | #ifdef FULL_DEBUG |
1130 | DebPrint (("select waiting on child %d fd %d\n", | |
1131 | cp-child_procs, i)); | |
1132 | #endif | |
6cdfb6e6 RS |
1133 | } |
1134 | else | |
1135 | { | |
c519b5e1 | 1136 | /* Unable to find something to wait on for this fd, skip */ |
ef79fbba GV |
1137 | |
1138 | /* Note that this is not a fatal error, and can in fact | |
1139 | happen in unusual circumstances. Specifically, if | |
1140 | sys_spawnve fails, eg. because the program doesn't | |
1141 | exist, and debug-on-error is t so Fsignal invokes a | |
1142 | nested input loop, then the process output pipe is | |
1143 | still included in input_wait_mask with no child_proc | |
1144 | associated with it. (It is removed when the debugger | |
1145 | exits the nested input loop and the error is thrown.) */ | |
1146 | ||
c519b5e1 | 1147 | DebPrint (("sys_select: fd %ld is invalid! ignoring\n", i)); |
6cdfb6e6 RS |
1148 | } |
1149 | } | |
1150 | } | |
b2fc9f3d GV |
1151 | |
1152 | count_children: | |
1153 | /* Add handles of child processes. */ | |
1154 | nc = 0; | |
1155 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) | |
ef79fbba GV |
1156 | /* Some child_procs might be sockets; ignore them. Also some |
1157 | children may have died already, but we haven't finished reading | |
1158 | the process output; ignore them too. */ | |
1159 | if (CHILD_ACTIVE (cp) && cp->procinfo.hProcess | |
1160 | && (cp->fd < 0 | |
1161 | || (fd_info[cp->fd].flags & FILE_SEND_SIGCHLD) == 0 | |
1162 | || (fd_info[cp->fd].flags & FILE_AT_EOF) != 0) | |
1163 | ) | |
b2fc9f3d GV |
1164 | { |
1165 | wait_hnd[nh + nc] = cp->procinfo.hProcess; | |
1166 | cps[nc] = cp; | |
1167 | nc++; | |
1168 | } | |
6cdfb6e6 RS |
1169 | |
1170 | /* Nothing to look for, so we didn't find anything */ | |
b2fc9f3d | 1171 | if (nh + nc == 0) |
6cdfb6e6 | 1172 | { |
22759c72 | 1173 | if (timeout) |
b2fc9f3d | 1174 | Sleep (timeout_ms); |
6cdfb6e6 RS |
1175 | return 0; |
1176 | } | |
6cdfb6e6 | 1177 | |
b2fc9f3d GV |
1178 | /* Wait for input or child death to be signalled. */ |
1179 | start_time = GetTickCount (); | |
1180 | active = WaitForMultipleObjects (nh + nc, wait_hnd, FALSE, timeout_ms); | |
c519b5e1 | 1181 | |
6cdfb6e6 RS |
1182 | if (active == WAIT_FAILED) |
1183 | { | |
1184 | DebPrint (("select.WaitForMultipleObjects (%d, %lu) failed with %lu\n", | |
b2fc9f3d | 1185 | nh + nc, timeout_ms, GetLastError ())); |
c519b5e1 GV |
1186 | /* don't return EBADF - this causes wait_reading_process_input to |
1187 | abort; WAIT_FAILED is returned when single-stepping under | |
1188 | Windows 95 after switching thread focus in debugger, and | |
1189 | possibly at other times. */ | |
1190 | errno = EINTR; | |
6cdfb6e6 RS |
1191 | return -1; |
1192 | } | |
1193 | else if (active == WAIT_TIMEOUT) | |
1194 | { | |
1195 | return 0; | |
1196 | } | |
b2fc9f3d GV |
1197 | else if (active >= WAIT_OBJECT_0 |
1198 | && active < WAIT_OBJECT_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
1199 | { |
1200 | active -= WAIT_OBJECT_0; | |
1201 | } | |
b2fc9f3d GV |
1202 | else if (active >= WAIT_ABANDONED_0 |
1203 | && active < WAIT_ABANDONED_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
1204 | { |
1205 | active -= WAIT_ABANDONED_0; | |
1206 | } | |
b2fc9f3d GV |
1207 | else |
1208 | abort (); | |
6cdfb6e6 | 1209 | |
c519b5e1 GV |
1210 | /* Loop over all handles after active (now officially documented as |
1211 | being the first signalled handle in the array). We do this to | |
1212 | ensure fairness, so that all channels with data available will be | |
1213 | processed - otherwise higher numbered channels could be starved. */ | |
1214 | do | |
6cdfb6e6 | 1215 | { |
b2fc9f3d GV |
1216 | if (active >= nh) |
1217 | { | |
1218 | cp = cps[active - nh]; | |
ef79fbba GV |
1219 | |
1220 | /* We cannot always signal SIGCHLD immediately; if we have not | |
1221 | finished reading the process output, we must delay sending | |
1222 | SIGCHLD until we do. */ | |
1223 | ||
1224 | if (cp->fd >= 0 && (fd_info[cp->fd].flags & FILE_AT_EOF) == 0) | |
1225 | fd_info[cp->fd].flags |= FILE_SEND_SIGCHLD; | |
b2fc9f3d | 1226 | /* SIG_DFL for SIGCHLD is ignore */ |
ef79fbba GV |
1227 | else if (sig_handlers[SIGCHLD] != SIG_DFL && |
1228 | sig_handlers[SIGCHLD] != SIG_IGN) | |
b2fc9f3d GV |
1229 | { |
1230 | #ifdef FULL_DEBUG | |
1231 | DebPrint (("select calling SIGCHLD handler for pid %d\n", | |
1232 | cp->pid)); | |
1233 | #endif | |
1234 | dead_child = cp; | |
1235 | sig_handlers[SIGCHLD] (SIGCHLD); | |
1236 | dead_child = NULL; | |
1237 | } | |
1238 | } | |
86143765 RS |
1239 | else if (fdindex[active] == -1) |
1240 | { | |
1241 | /* Quit (C-g) was detected. */ | |
1242 | errno = EINTR; | |
1243 | return -1; | |
1244 | } | |
b2fc9f3d | 1245 | else if (fdindex[active] == 0) |
c519b5e1 GV |
1246 | { |
1247 | /* Keyboard input available */ | |
1248 | FD_SET (0, rfds); | |
6cdfb6e6 | 1249 | nr++; |
c519b5e1 | 1250 | } |
6cdfb6e6 | 1251 | else |
c519b5e1 | 1252 | { |
b2fc9f3d GV |
1253 | /* must be a socket or pipe - read ahead should have |
1254 | completed, either succeeding or failing. */ | |
c519b5e1 GV |
1255 | FD_SET (fdindex[active], rfds); |
1256 | nr++; | |
c519b5e1 GV |
1257 | } |
1258 | ||
b2fc9f3d GV |
1259 | /* Even though wait_reading_process_output only reads from at most |
1260 | one channel, we must process all channels here so that we reap | |
1261 | all children that have died. */ | |
1262 | while (++active < nh + nc) | |
c519b5e1 GV |
1263 | if (WaitForSingleObject (wait_hnd[active], 0) == WAIT_OBJECT_0) |
1264 | break; | |
b2fc9f3d GV |
1265 | } while (active < nh + nc); |
1266 | ||
1267 | /* If no input has arrived and timeout hasn't expired, wait again. */ | |
1268 | if (nr == 0) | |
1269 | { | |
1270 | DWORD elapsed = GetTickCount () - start_time; | |
1271 | ||
1272 | if (timeout_ms > elapsed) /* INFINITE is MAX_UINT */ | |
1273 | { | |
1274 | if (timeout_ms != INFINITE) | |
1275 | timeout_ms -= elapsed; | |
1276 | goto count_children; | |
1277 | } | |
1278 | } | |
c519b5e1 | 1279 | |
6cdfb6e6 RS |
1280 | return nr; |
1281 | } | |
1282 | ||
c519b5e1 | 1283 | /* Substitute for certain kill () operations */ |
b2fc9f3d GV |
1284 | |
1285 | static BOOL CALLBACK | |
1286 | find_child_console (HWND hwnd, child_process * cp) | |
1287 | { | |
1288 | DWORD thread_id; | |
1289 | DWORD process_id; | |
1290 | ||
1291 | thread_id = GetWindowThreadProcessId (hwnd, &process_id); | |
1292 | if (process_id == cp->procinfo.dwProcessId) | |
1293 | { | |
1294 | char window_class[32]; | |
1295 | ||
1296 | GetClassName (hwnd, window_class, sizeof (window_class)); | |
1297 | if (strcmp (window_class, | |
1298 | (os_subtype == OS_WIN95) | |
1299 | ? "tty" | |
1300 | : "ConsoleWindowClass") == 0) | |
1301 | { | |
1302 | cp->hwnd = hwnd; | |
1303 | return FALSE; | |
1304 | } | |
1305 | } | |
1306 | /* keep looking */ | |
1307 | return TRUE; | |
1308 | } | |
1309 | ||
6cdfb6e6 | 1310 | int |
c519b5e1 | 1311 | sys_kill (int pid, int sig) |
6cdfb6e6 RS |
1312 | { |
1313 | child_process *cp; | |
c519b5e1 GV |
1314 | HANDLE proc_hand; |
1315 | int need_to_free = 0; | |
1316 | int rc = 0; | |
6cdfb6e6 RS |
1317 | |
1318 | /* Only handle signals that will result in the process dying */ | |
1319 | if (sig != SIGINT && sig != SIGKILL && sig != SIGQUIT && sig != SIGHUP) | |
1320 | { | |
1321 | errno = EINVAL; | |
1322 | return -1; | |
1323 | } | |
c519b5e1 | 1324 | |
6cdfb6e6 RS |
1325 | cp = find_child_pid (pid); |
1326 | if (cp == NULL) | |
1327 | { | |
c519b5e1 GV |
1328 | proc_hand = OpenProcess (PROCESS_TERMINATE, 0, pid); |
1329 | if (proc_hand == NULL) | |
1330 | { | |
1331 | errno = EPERM; | |
1332 | return -1; | |
1333 | } | |
1334 | need_to_free = 1; | |
1335 | } | |
1336 | else | |
1337 | { | |
1338 | proc_hand = cp->procinfo.hProcess; | |
1339 | pid = cp->procinfo.dwProcessId; | |
b2fc9f3d GV |
1340 | |
1341 | /* Try to locate console window for process. */ | |
1342 | EnumWindows (find_child_console, (LPARAM) cp); | |
6cdfb6e6 RS |
1343 | } |
1344 | ||
1345 | if (sig == SIGINT) | |
1346 | { | |
b2fc9f3d GV |
1347 | if (NILP (Vw32_start_process_share_console) && cp && cp->hwnd) |
1348 | { | |
1349 | BYTE control_scan_code = (BYTE) MapVirtualKey (VK_CONTROL, 0); | |
1350 | BYTE vk_break_code = VK_CANCEL; | |
1351 | BYTE break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0); | |
1352 | HWND foreground_window; | |
1353 | ||
1354 | if (break_scan_code == 0) | |
1355 | { | |
1356 | /* Fake Ctrl-C if we can't manage Ctrl-Break. */ | |
1357 | vk_break_code = 'C'; | |
1358 | break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0); | |
1359 | } | |
1360 | ||
1361 | foreground_window = GetForegroundWindow (); | |
f446016f | 1362 | if (foreground_window) |
b2fc9f3d | 1363 | { |
f446016f AI |
1364 | /* NT 5.0, and apparently also Windows 98, will not allow |
1365 | a Window to be set to foreground directly without the | |
1366 | user's involvement. The workaround is to attach | |
1367 | ourselves to the thread that owns the foreground | |
1368 | window, since that is the only thread that can set the | |
1369 | foreground window. */ | |
1370 | DWORD foreground_thread, child_thread; | |
1371 | foreground_thread = | |
1372 | GetWindowThreadProcessId (foreground_window, NULL); | |
1373 | if (foreground_thread == GetCurrentThreadId () | |
1374 | || !AttachThreadInput (GetCurrentThreadId (), | |
1375 | foreground_thread, TRUE)) | |
1376 | foreground_thread = 0; | |
1377 | ||
1378 | child_thread = GetWindowThreadProcessId (cp->hwnd, NULL); | |
1379 | if (child_thread == GetCurrentThreadId () | |
1380 | || !AttachThreadInput (GetCurrentThreadId (), | |
1381 | child_thread, TRUE)) | |
1382 | child_thread = 0; | |
1383 | ||
1384 | /* Set the foreground window to the child. */ | |
1385 | if (SetForegroundWindow (cp->hwnd)) | |
1386 | { | |
1387 | /* Generate keystrokes as if user had typed Ctrl-Break or | |
1388 | Ctrl-C. */ | |
1389 | keybd_event (VK_CONTROL, control_scan_code, 0, 0); | |
1390 | keybd_event (vk_break_code, break_scan_code, | |
1391 | (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY), 0); | |
1392 | keybd_event (vk_break_code, break_scan_code, | |
1393 | (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY) | |
1394 | | KEYEVENTF_KEYUP, 0); | |
1395 | keybd_event (VK_CONTROL, control_scan_code, | |
1396 | KEYEVENTF_KEYUP, 0); | |
1397 | ||
1398 | /* Sleep for a bit to give time for Emacs frame to respond | |
1399 | to focus change events (if Emacs was active app). */ | |
1400 | Sleep (100); | |
1401 | ||
1402 | SetForegroundWindow (foreground_window); | |
1403 | } | |
1404 | /* Detach from the foreground and child threads now that | |
1405 | the foreground switching is over. */ | |
1406 | if (foreground_thread) | |
1407 | AttachThreadInput (GetCurrentThreadId (), | |
1408 | foreground_thread, FALSE); | |
1409 | if (child_thread) | |
1410 | AttachThreadInput (GetCurrentThreadId (), | |
1411 | child_thread, FALSE); | |
1412 | } | |
1413 | } | |
c519b5e1 | 1414 | /* Ctrl-Break is NT equivalent of SIGINT. */ |
b2fc9f3d | 1415 | else if (!GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, pid)) |
6cdfb6e6 | 1416 | { |
c519b5e1 | 1417 | DebPrint (("sys_kill.GenerateConsoleCtrlEvent return %d " |
6cdfb6e6 RS |
1418 | "for pid %lu\n", GetLastError (), pid)); |
1419 | errno = EINVAL; | |
c519b5e1 | 1420 | rc = -1; |
80874ef7 | 1421 | } |
6cdfb6e6 RS |
1422 | } |
1423 | else | |
1424 | { | |
b2fc9f3d GV |
1425 | if (NILP (Vw32_start_process_share_console) && cp && cp->hwnd) |
1426 | { | |
1427 | #if 1 | |
1428 | if (os_subtype == OS_WIN95) | |
1429 | { | |
1430 | /* | |
1431 | Another possibility is to try terminating the VDM out-right by | |
1432 | calling the Shell VxD (id 0x17) V86 interface, function #4 | |
1433 | "SHELL_Destroy_VM", ie. | |
1434 | ||
1435 | mov edx,4 | |
1436 | mov ebx,vm_handle | |
1437 | call shellapi | |
1438 | ||
1439 | First need to determine the current VM handle, and then arrange for | |
1440 | the shellapi call to be made from the system vm (by using | |
1441 | Switch_VM_and_callback). | |
1442 | ||
1443 | Could try to invoke DestroyVM through CallVxD. | |
1444 | ||
1445 | */ | |
ef79fbba GV |
1446 | #if 0 |
1447 | /* On Win95, posting WM_QUIT causes the 16-bit subsystem | |
1448 | to hang when cmdproxy is used in conjunction with | |
1449 | command.com for an interactive shell. Posting | |
1450 | WM_CLOSE pops up a dialog that, when Yes is selected, | |
1451 | does the same thing. TerminateProcess is also less | |
1452 | than ideal in that subprocesses tend to stick around | |
1453 | until the machine is shutdown, but at least it | |
1454 | doesn't freeze the 16-bit subsystem. */ | |
b2fc9f3d | 1455 | PostMessage (cp->hwnd, WM_QUIT, 0xff, 0); |
ef79fbba GV |
1456 | #endif |
1457 | if (!TerminateProcess (proc_hand, 0xff)) | |
1458 | { | |
1459 | DebPrint (("sys_kill.TerminateProcess returned %d " | |
1460 | "for pid %lu\n", GetLastError (), pid)); | |
1461 | errno = EINVAL; | |
1462 | rc = -1; | |
1463 | } | |
b2fc9f3d GV |
1464 | } |
1465 | else | |
1466 | #endif | |
1467 | PostMessage (cp->hwnd, WM_CLOSE, 0, 0); | |
1468 | } | |
fbd6baed | 1469 | /* Kill the process. On W32 this doesn't kill child processes |
8eae7766 | 1470 | so it doesn't work very well for shells which is why it's not |
b2fc9f3d GV |
1471 | used in every case. */ |
1472 | else if (!TerminateProcess (proc_hand, 0xff)) | |
6cdfb6e6 | 1473 | { |
c519b5e1 | 1474 | DebPrint (("sys_kill.TerminateProcess returned %d " |
6cdfb6e6 RS |
1475 | "for pid %lu\n", GetLastError (), pid)); |
1476 | errno = EINVAL; | |
c519b5e1 | 1477 | rc = -1; |
6cdfb6e6 RS |
1478 | } |
1479 | } | |
c519b5e1 GV |
1480 | |
1481 | if (need_to_free) | |
1482 | CloseHandle (proc_hand); | |
1483 | ||
1484 | return rc; | |
6cdfb6e6 RS |
1485 | } |
1486 | ||
09522567 | 1487 | /* extern int report_file_error (char *, Lisp_Object); */ |
c519b5e1 GV |
1488 | |
1489 | /* The following two routines are used to manipulate stdin, stdout, and | |
1490 | stderr of our child processes. | |
1491 | ||
1492 | Assuming that in, out, and err are *not* inheritable, we make them | |
1493 | stdin, stdout, and stderr of the child as follows: | |
1494 | ||
1495 | - Save the parent's current standard handles. | |
1496 | - Set the std handles to inheritable duplicates of the ones being passed in. | |
1497 | (Note that _get_osfhandle() is an io.h procedure that retrieves the | |
1498 | NT file handle for a crt file descriptor.) | |
1499 | - Spawn the child, which inherits in, out, and err as stdin, | |
1500 | stdout, and stderr. (see Spawnve) | |
1501 | - Close the std handles passed to the child. | |
1502 | - Reset the parent's standard handles to the saved handles. | |
1503 | (see reset_standard_handles) | |
1504 | We assume that the caller closes in, out, and err after calling us. */ | |
1505 | ||
1506 | void | |
1507 | prepare_standard_handles (int in, int out, int err, HANDLE handles[3]) | |
6cdfb6e6 | 1508 | { |
c519b5e1 GV |
1509 | HANDLE parent; |
1510 | HANDLE newstdin, newstdout, newstderr; | |
1511 | ||
1512 | parent = GetCurrentProcess (); | |
1513 | ||
1514 | handles[0] = GetStdHandle (STD_INPUT_HANDLE); | |
1515 | handles[1] = GetStdHandle (STD_OUTPUT_HANDLE); | |
1516 | handles[2] = GetStdHandle (STD_ERROR_HANDLE); | |
1517 | ||
1518 | /* make inheritable copies of the new handles */ | |
1519 | if (!DuplicateHandle (parent, | |
1520 | (HANDLE) _get_osfhandle (in), | |
1521 | parent, | |
1522 | &newstdin, | |
1523 | 0, | |
1524 | TRUE, | |
1525 | DUPLICATE_SAME_ACCESS)) | |
1526 | report_file_error ("Duplicating input handle for child", Qnil); | |
6cdfb6e6 | 1527 | |
c519b5e1 GV |
1528 | if (!DuplicateHandle (parent, |
1529 | (HANDLE) _get_osfhandle (out), | |
1530 | parent, | |
1531 | &newstdout, | |
1532 | 0, | |
1533 | TRUE, | |
1534 | DUPLICATE_SAME_ACCESS)) | |
1535 | report_file_error ("Duplicating output handle for child", Qnil); | |
6cdfb6e6 | 1536 | |
c519b5e1 GV |
1537 | if (!DuplicateHandle (parent, |
1538 | (HANDLE) _get_osfhandle (err), | |
1539 | parent, | |
1540 | &newstderr, | |
1541 | 0, | |
1542 | TRUE, | |
1543 | DUPLICATE_SAME_ACCESS)) | |
1544 | report_file_error ("Duplicating error handle for child", Qnil); | |
1545 | ||
1546 | /* and store them as our std handles */ | |
1547 | if (!SetStdHandle (STD_INPUT_HANDLE, newstdin)) | |
1548 | report_file_error ("Changing stdin handle", Qnil); | |
6cdfb6e6 | 1549 | |
c519b5e1 GV |
1550 | if (!SetStdHandle (STD_OUTPUT_HANDLE, newstdout)) |
1551 | report_file_error ("Changing stdout handle", Qnil); | |
1552 | ||
1553 | if (!SetStdHandle (STD_ERROR_HANDLE, newstderr)) | |
1554 | report_file_error ("Changing stderr handle", Qnil); | |
1555 | } | |
1556 | ||
1557 | void | |
1558 | reset_standard_handles (int in, int out, int err, HANDLE handles[3]) | |
1559 | { | |
1560 | /* close the duplicated handles passed to the child */ | |
1561 | CloseHandle (GetStdHandle (STD_INPUT_HANDLE)); | |
1562 | CloseHandle (GetStdHandle (STD_OUTPUT_HANDLE)); | |
1563 | CloseHandle (GetStdHandle (STD_ERROR_HANDLE)); | |
1564 | ||
1565 | /* now restore parent's saved std handles */ | |
1566 | SetStdHandle (STD_INPUT_HANDLE, handles[0]); | |
1567 | SetStdHandle (STD_OUTPUT_HANDLE, handles[1]); | |
1568 | SetStdHandle (STD_ERROR_HANDLE, handles[2]); | |
6cdfb6e6 | 1569 | } |
c519b5e1 | 1570 | |
b2fc9f3d GV |
1571 | void |
1572 | set_process_dir (char * dir) | |
1573 | { | |
1574 | process_dir = dir; | |
1575 | } | |
1576 | ||
a11e68d0 RS |
1577 | #ifdef HAVE_SOCKETS |
1578 | ||
1579 | /* To avoid problems with winsock implementations that work over dial-up | |
1580 | connections causing or requiring a connection to exist while Emacs is | |
1581 | running, Emacs no longer automatically loads winsock on startup if it | |
1582 | is present. Instead, it will be loaded when open-network-stream is | |
1583 | first called. | |
1584 | ||
1585 | To allow full control over when winsock is loaded, we provide these | |
1586 | two functions to dynamically load and unload winsock. This allows | |
1587 | dial-up users to only be connected when they actually need to use | |
1588 | socket services. */ | |
1589 | ||
1590 | /* From nt.c */ | |
1591 | extern HANDLE winsock_lib; | |
1592 | extern BOOL term_winsock (void); | |
1593 | extern BOOL init_winsock (int load_now); | |
1594 | ||
1595 | extern Lisp_Object Vsystem_name; | |
1596 | ||
fbd6baed | 1597 | DEFUN ("w32-has-winsock", Fw32_has_winsock, Sw32_has_winsock, 0, 1, 0, |
a11e68d0 RS |
1598 | "Test for presence of the Windows socket library `winsock'.\n\ |
1599 | Returns non-nil if winsock support is present, nil otherwise.\n\ | |
1600 | \n\ | |
1601 | If the optional argument LOAD-NOW is non-nil, the winsock library is\n\ | |
1602 | also loaded immediately if not already loaded. If winsock is loaded,\n\ | |
1603 | the winsock local hostname is returned (since this may be different from\n\ | |
1604 | the value of `system-name' and should supplant it), otherwise t is\n\ | |
1605 | returned to indicate winsock support is present.") | |
1606 | (load_now) | |
1607 | Lisp_Object load_now; | |
1608 | { | |
1609 | int have_winsock; | |
1610 | ||
1611 | have_winsock = init_winsock (!NILP (load_now)); | |
1612 | if (have_winsock) | |
1613 | { | |
1614 | if (winsock_lib != NULL) | |
1615 | { | |
1616 | /* Return new value for system-name. The best way to do this | |
1617 | is to call init_system_name, saving and restoring the | |
1618 | original value to avoid side-effects. */ | |
1619 | Lisp_Object orig_hostname = Vsystem_name; | |
1620 | Lisp_Object hostname; | |
1621 | ||
1622 | init_system_name (); | |
1623 | hostname = Vsystem_name; | |
1624 | Vsystem_name = orig_hostname; | |
1625 | return hostname; | |
1626 | } | |
1627 | return Qt; | |
1628 | } | |
1629 | return Qnil; | |
1630 | } | |
1631 | ||
fbd6baed | 1632 | DEFUN ("w32-unload-winsock", Fw32_unload_winsock, Sw32_unload_winsock, |
a11e68d0 RS |
1633 | 0, 0, 0, |
1634 | "Unload the Windows socket library `winsock' if loaded.\n\ | |
1635 | This is provided to allow dial-up socket connections to be disconnected\n\ | |
1636 | when no longer needed. Returns nil without unloading winsock if any\n\ | |
1637 | socket connections still exist.") | |
1638 | () | |
1639 | { | |
1640 | return term_winsock () ? Qt : Qnil; | |
1641 | } | |
1642 | ||
1643 | #endif /* HAVE_SOCKETS */ | |
1644 | ||
93fdf2f8 | 1645 | \f |
b2fc9f3d GV |
1646 | /* Some miscellaneous functions that are Windows specific, but not GUI |
1647 | specific (ie. are applicable in terminal or batch mode as well). */ | |
1648 | ||
1649 | /* lifted from fileio.c */ | |
1650 | #define CORRECT_DIR_SEPS(s) \ | |
1651 | do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \ | |
1652 | else unixtodos_filename (s); \ | |
1653 | } while (0) | |
1654 | ||
1655 | DEFUN ("w32-short-file-name", Fw32_short_file_name, Sw32_short_file_name, 1, 1, 0, | |
1656 | "Return the short file name version (8.3) of the full path of FILENAME.\n\ | |
1657 | If FILENAME does not exist, return nil.\n\ | |
1658 | All path elements in FILENAME are converted to their short names.") | |
1659 | (filename) | |
1660 | Lisp_Object filename; | |
1661 | { | |
1662 | char shortname[MAX_PATH]; | |
1663 | ||
1664 | CHECK_STRING (filename, 0); | |
1665 | ||
1666 | /* first expand it. */ | |
1667 | filename = Fexpand_file_name (filename, Qnil); | |
1668 | ||
1669 | /* luckily, this returns the short version of each element in the path. */ | |
1670 | if (GetShortPathName (XSTRING (filename)->data, shortname, MAX_PATH) == 0) | |
1671 | return Qnil; | |
1672 | ||
1673 | CORRECT_DIR_SEPS (shortname); | |
1674 | ||
1675 | return build_string (shortname); | |
1676 | } | |
1677 | ||
1678 | ||
1679 | DEFUN ("w32-long-file-name", Fw32_long_file_name, Sw32_long_file_name, | |
1680 | 1, 1, 0, | |
1681 | "Return the long file name version of the full path of FILENAME.\n\ | |
1682 | If FILENAME does not exist, return nil.\n\ | |
1683 | All path elements in FILENAME are converted to their long names.") | |
1684 | (filename) | |
1685 | Lisp_Object filename; | |
1686 | { | |
1687 | char longname[ MAX_PATH ]; | |
1688 | ||
1689 | CHECK_STRING (filename, 0); | |
1690 | ||
1691 | /* first expand it. */ | |
1692 | filename = Fexpand_file_name (filename, Qnil); | |
1693 | ||
1694 | if (!w32_get_long_filename (XSTRING (filename)->data, longname, MAX_PATH)) | |
1695 | return Qnil; | |
1696 | ||
1697 | CORRECT_DIR_SEPS (longname); | |
1698 | ||
1699 | return build_string (longname); | |
1700 | } | |
1701 | ||
1702 | DEFUN ("w32-set-process-priority", Fw32_set_process_priority, Sw32_set_process_priority, | |
1703 | 2, 2, 0, | |
1704 | "Set the priority of PROCESS to PRIORITY.\n\ | |
1705 | If PROCESS is nil, the priority of Emacs is changed, otherwise the\n\ | |
1706 | priority of the process whose pid is PROCESS is changed.\n\ | |
1707 | PRIORITY should be one of the symbols high, normal, or low;\n\ | |
1708 | any other symbol will be interpreted as normal.\n\ | |
1709 | \n\ | |
1710 | If successful, the return value is t, otherwise nil.") | |
1711 | (process, priority) | |
1712 | Lisp_Object process, priority; | |
1713 | { | |
1714 | HANDLE proc_handle = GetCurrentProcess (); | |
1715 | DWORD priority_class = NORMAL_PRIORITY_CLASS; | |
1716 | Lisp_Object result = Qnil; | |
1717 | ||
1718 | CHECK_SYMBOL (priority, 0); | |
1719 | ||
1720 | if (!NILP (process)) | |
1721 | { | |
1722 | DWORD pid; | |
1723 | child_process *cp; | |
1724 | ||
1725 | CHECK_NUMBER (process, 0); | |
1726 | ||
1727 | /* Allow pid to be an internally generated one, or one obtained | |
1728 | externally. This is necessary because real pids on Win95 are | |
1729 | negative. */ | |
1730 | ||
1731 | pid = XINT (process); | |
1732 | cp = find_child_pid (pid); | |
1733 | if (cp != NULL) | |
1734 | pid = cp->procinfo.dwProcessId; | |
1735 | ||
1736 | proc_handle = OpenProcess (PROCESS_SET_INFORMATION, FALSE, pid); | |
1737 | } | |
1738 | ||
1739 | if (EQ (priority, Qhigh)) | |
1740 | priority_class = HIGH_PRIORITY_CLASS; | |
1741 | else if (EQ (priority, Qlow)) | |
1742 | priority_class = IDLE_PRIORITY_CLASS; | |
1743 | ||
1744 | if (proc_handle != NULL) | |
1745 | { | |
1746 | if (SetPriorityClass (proc_handle, priority_class)) | |
1747 | result = Qt; | |
1748 | if (!NILP (process)) | |
1749 | CloseHandle (proc_handle); | |
1750 | } | |
1751 | ||
1752 | return result; | |
1753 | } | |
1754 | ||
1755 | ||
1756 | DEFUN ("w32-get-locale-info", Fw32_get_locale_info, Sw32_get_locale_info, 1, 2, 0, | |
1757 | "Return information about the Windows locale LCID.\n\ | |
1758 | By default, return a three letter locale code which encodes the default\n\ | |
1759 | language as the first two characters, and the country or regionial variant\n\ | |
1760 | as the third letter. For example, ENU refers to `English (United States)',\n\ | |
1761 | while ENC means `English (Canadian)'.\n\ | |
1762 | \n\ | |
0eaf5926 GV |
1763 | If the optional argument LONGFORM is t, the long form of the locale\n\ |
1764 | name is returned, e.g. `English (United States)' instead; if LONGFORM\n\ | |
1765 | is a number, it is interpreted as an LCTYPE constant and the corresponding\n\ | |
1766 | locale information is returned.\n\ | |
b2fc9f3d GV |
1767 | \n\ |
1768 | If LCID (a 16-bit number) is not a valid locale, the result is nil.") | |
1769 | (lcid, longform) | |
1770 | Lisp_Object lcid, longform; | |
1771 | { | |
1772 | int got_abbrev; | |
1773 | int got_full; | |
1774 | char abbrev_name[32] = { 0 }; | |
1775 | char full_name[256] = { 0 }; | |
1776 | ||
1777 | CHECK_NUMBER (lcid, 0); | |
1778 | ||
1779 | if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED)) | |
1780 | return Qnil; | |
1781 | ||
1782 | if (NILP (longform)) | |
1783 | { | |
1784 | got_abbrev = GetLocaleInfo (XINT (lcid), | |
1785 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
1786 | abbrev_name, sizeof (abbrev_name)); | |
1787 | if (got_abbrev) | |
1788 | return build_string (abbrev_name); | |
1789 | } | |
0eaf5926 | 1790 | else if (EQ (longform, Qt)) |
b2fc9f3d GV |
1791 | { |
1792 | got_full = GetLocaleInfo (XINT (lcid), | |
1793 | LOCALE_SLANGUAGE | LOCALE_USE_CP_ACP, | |
1794 | full_name, sizeof (full_name)); | |
1795 | if (got_full) | |
1796 | return build_string (full_name); | |
1797 | } | |
0eaf5926 GV |
1798 | else if (NUMBERP (longform)) |
1799 | { | |
1800 | got_full = GetLocaleInfo (XINT (lcid), | |
1801 | XINT (longform), | |
1802 | full_name, sizeof (full_name)); | |
1803 | if (got_full) | |
1804 | return make_unibyte_string (full_name, got_full); | |
1805 | } | |
b2fc9f3d GV |
1806 | |
1807 | return Qnil; | |
1808 | } | |
1809 | ||
1810 | ||
1811 | DEFUN ("w32-get-current-locale-id", Fw32_get_current_locale_id, Sw32_get_current_locale_id, 0, 0, 0, | |
1812 | "Return Windows locale id for current locale setting.\n\ | |
1813 | This is a numerical value; use `w32-get-locale-info' to convert to a\n\ | |
1814 | human-readable form.") | |
1815 | () | |
1816 | { | |
1817 | return make_number (GetThreadLocale ()); | |
1818 | } | |
1819 | ||
ef79fbba GV |
1820 | DWORD int_from_hex (char * s) |
1821 | { | |
1822 | DWORD val = 0; | |
1823 | static char hex[] = "0123456789abcdefABCDEF"; | |
1824 | char * p; | |
1825 | ||
1826 | while (*s && (p = strchr(hex, *s)) != NULL) | |
1827 | { | |
1828 | unsigned digit = p - hex; | |
1829 | if (digit > 15) | |
1830 | digit -= 6; | |
1831 | val = val * 16 + digit; | |
1832 | s++; | |
1833 | } | |
1834 | return val; | |
1835 | } | |
1836 | ||
1837 | /* We need to build a global list, since the EnumSystemLocale callback | |
1838 | function isn't given a context pointer. */ | |
1839 | Lisp_Object Vw32_valid_locale_ids; | |
1840 | ||
1841 | BOOL CALLBACK enum_locale_fn (LPTSTR localeNum) | |
1842 | { | |
1843 | DWORD id = int_from_hex (localeNum); | |
1844 | Vw32_valid_locale_ids = Fcons (make_number (id), Vw32_valid_locale_ids); | |
1845 | return TRUE; | |
1846 | } | |
1847 | ||
1848 | DEFUN ("w32-get-valid-locale-ids", Fw32_get_valid_locale_ids, Sw32_get_valid_locale_ids, 0, 0, 0, | |
1849 | "Return list of all valid Windows locale ids.\n\ | |
1850 | Each id is a numerical value; use `w32-get-locale-info' to convert to a\n\ | |
1851 | human-readable form.") | |
1852 | () | |
1853 | { | |
1854 | Vw32_valid_locale_ids = Qnil; | |
1855 | ||
1856 | EnumSystemLocales (enum_locale_fn, LCID_SUPPORTED); | |
1857 | ||
1858 | Vw32_valid_locale_ids = Fnreverse (Vw32_valid_locale_ids); | |
1859 | return Vw32_valid_locale_ids; | |
1860 | } | |
1861 | ||
b2fc9f3d GV |
1862 | |
1863 | DEFUN ("w32-get-default-locale-id", Fw32_get_default_locale_id, Sw32_get_default_locale_id, 0, 1, 0, | |
1864 | "Return Windows locale id for default locale setting.\n\ | |
1865 | By default, the system default locale setting is returned; if the optional\n\ | |
1866 | parameter USERP is non-nil, the user default locale setting is returned.\n\ | |
1867 | This is a numerical value; use `w32-get-locale-info' to convert to a\n\ | |
1868 | human-readable form.") | |
1869 | (userp) | |
1870 | Lisp_Object userp; | |
1871 | { | |
1872 | if (NILP (userp)) | |
1873 | return make_number (GetSystemDefaultLCID ()); | |
1874 | return make_number (GetUserDefaultLCID ()); | |
1875 | } | |
1876 | ||
1877 | ||
1878 | DEFUN ("w32-set-current-locale", Fw32_set_current_locale, Sw32_set_current_locale, 1, 1, 0, | |
1879 | "Make Windows locale LCID be the current locale setting for Emacs.\n\ | |
1880 | If successful, the new locale id is returned, otherwise nil.") | |
1881 | (lcid) | |
1882 | Lisp_Object lcid; | |
1883 | { | |
1884 | CHECK_NUMBER (lcid, 0); | |
1885 | ||
1886 | if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED)) | |
1887 | return Qnil; | |
1888 | ||
1889 | if (!SetThreadLocale (XINT (lcid))) | |
1890 | return Qnil; | |
1891 | ||
ef79fbba GV |
1892 | /* Need to set input thread locale if present. */ |
1893 | if (dwWindowsThreadId) | |
1894 | /* Reply is not needed. */ | |
1895 | PostThreadMessage (dwWindowsThreadId, WM_EMACS_SETLOCALE, XINT (lcid), 0); | |
1896 | ||
b2fc9f3d GV |
1897 | return make_number (GetThreadLocale ()); |
1898 | } | |
1899 | ||
0eaf5926 GV |
1900 | |
1901 | /* We need to build a global list, since the EnumCodePages callback | |
1902 | function isn't given a context pointer. */ | |
1903 | Lisp_Object Vw32_valid_codepages; | |
1904 | ||
1905 | BOOL CALLBACK enum_codepage_fn (LPTSTR codepageNum) | |
1906 | { | |
1907 | DWORD id = atoi (codepageNum); | |
1908 | Vw32_valid_codepages = Fcons (make_number (id), Vw32_valid_codepages); | |
1909 | return TRUE; | |
1910 | } | |
1911 | ||
1912 | DEFUN ("w32-get-valid-codepages", Fw32_get_valid_codepages, Sw32_get_valid_codepages, 0, 0, 0, | |
1913 | "Return list of all valid Windows codepages.") | |
1914 | () | |
1915 | { | |
1916 | Vw32_valid_codepages = Qnil; | |
1917 | ||
1918 | EnumSystemCodePages (enum_codepage_fn, CP_SUPPORTED); | |
1919 | ||
1920 | Vw32_valid_codepages = Fnreverse (Vw32_valid_codepages); | |
1921 | return Vw32_valid_codepages; | |
1922 | } | |
1923 | ||
1924 | ||
1925 | DEFUN ("w32-get-console-codepage", Fw32_get_console_codepage, Sw32_get_console_codepage, 0, 0, 0, | |
1926 | "Return current Windows codepage for console input.") | |
1927 | () | |
1928 | { | |
1929 | return make_number (GetConsoleCP ()); | |
1930 | } | |
1931 | ||
1932 | ||
1933 | DEFUN ("w32-set-console-codepage", Fw32_set_console_codepage, Sw32_set_console_codepage, 1, 1, 0, | |
1934 | "Make Windows codepage CP be the current codepage setting for Emacs.\n\ | |
1935 | The codepage setting affects keyboard input and display in tty mode.\n\ | |
1936 | If successful, the new CP is returned, otherwise nil.") | |
1937 | (cp) | |
1938 | Lisp_Object cp; | |
1939 | { | |
1940 | CHECK_NUMBER (cp, 0); | |
1941 | ||
1942 | if (!IsValidCodePage (XINT (cp))) | |
1943 | return Qnil; | |
1944 | ||
1945 | if (!SetConsoleCP (XINT (cp))) | |
1946 | return Qnil; | |
1947 | ||
1948 | return make_number (GetConsoleCP ()); | |
1949 | } | |
1950 | ||
1951 | ||
1952 | DEFUN ("w32-get-console-output-codepage", Fw32_get_console_output_codepage, Sw32_get_console_output_codepage, 0, 0, 0, | |
1953 | "Return current Windows codepage for console output.") | |
1954 | () | |
1955 | { | |
1956 | return make_number (GetConsoleOutputCP ()); | |
1957 | } | |
1958 | ||
1959 | ||
1960 | DEFUN ("w32-set-console-output-codepage", Fw32_set_console_output_codepage, Sw32_set_console_output_codepage, 1, 1, 0, | |
1961 | "Make Windows codepage CP be the current codepage setting for Emacs.\n\ | |
1962 | The codepage setting affects keyboard input and display in tty mode.\n\ | |
1963 | If successful, the new CP is returned, otherwise nil.") | |
1964 | (cp) | |
1965 | Lisp_Object cp; | |
1966 | { | |
1967 | CHECK_NUMBER (cp, 0); | |
1968 | ||
1969 | if (!IsValidCodePage (XINT (cp))) | |
1970 | return Qnil; | |
1971 | ||
1972 | if (!SetConsoleOutputCP (XINT (cp))) | |
1973 | return Qnil; | |
1974 | ||
1975 | return make_number (GetConsoleOutputCP ()); | |
1976 | } | |
1977 | ||
1978 | ||
1979 | DEFUN ("w32-get-codepage-charset", Fw32_get_codepage_charset, Sw32_get_codepage_charset, 1, 1, 0, | |
1980 | "Return charset of codepage CP.\n\ | |
1981 | Returns nil if the codepage is not valid.") | |
1982 | (cp) | |
1983 | Lisp_Object cp; | |
1984 | { | |
1985 | CHARSETINFO info; | |
1986 | ||
1987 | CHECK_NUMBER (cp, 0); | |
1988 | ||
1989 | if (!IsValidCodePage (XINT (cp))) | |
1990 | return Qnil; | |
1991 | ||
1992 | if (TranslateCharsetInfo ((DWORD *) XINT (cp), &info, TCI_SRCCODEPAGE)) | |
1993 | return make_number (info.ciCharset); | |
1994 | ||
1995 | return Qnil; | |
1996 | } | |
1997 | ||
1998 | ||
1999 | DEFUN ("w32-get-valid-keyboard-layouts", Fw32_get_valid_keyboard_layouts, Sw32_get_valid_keyboard_layouts, 0, 0, 0, | |
2000 | "Return list of Windows keyboard languages and layouts.\n\ | |
2001 | The return value is a list of pairs of language id and layout id.") | |
2002 | () | |
2003 | { | |
2004 | int num_layouts = GetKeyboardLayoutList (0, NULL); | |
2005 | HKL * layouts = (HKL *) alloca (num_layouts * sizeof (HKL)); | |
2006 | Lisp_Object obj = Qnil; | |
2007 | ||
2008 | if (GetKeyboardLayoutList (num_layouts, layouts) == num_layouts) | |
2009 | { | |
2010 | while (--num_layouts >= 0) | |
2011 | { | |
2012 | DWORD kl = (DWORD) layouts[num_layouts]; | |
2013 | ||
2014 | obj = Fcons (Fcons (make_number (kl & 0xffff), | |
2015 | make_number ((kl >> 16) & 0xffff)), | |
2016 | obj); | |
2017 | } | |
2018 | } | |
2019 | ||
2020 | return obj; | |
2021 | } | |
2022 | ||
2023 | ||
2024 | DEFUN ("w32-get-keyboard-layout", Fw32_get_keyboard_layout, Sw32_get_keyboard_layout, 0, 0, 0, | |
2025 | "Return current Windows keyboard language and layout.\n\ | |
2026 | The return value is the cons of the language id and the layout id.") | |
2027 | () | |
2028 | { | |
2029 | DWORD kl = (DWORD) GetKeyboardLayout (dwWindowsThreadId); | |
2030 | ||
2031 | return Fcons (make_number (kl & 0xffff), | |
2032 | make_number ((kl >> 16) & 0xffff)); | |
2033 | } | |
2034 | ||
2035 | ||
2036 | DEFUN ("w32-set-keyboard-layout", Fw32_set_keyboard_layout, Sw32_set_keyboard_layout, 1, 1, 0, | |
2037 | "Make LAYOUT be the current keyboard layout for Emacs.\n\ | |
2038 | The keyboard layout setting affects interpretation of keyboard input.\n\ | |
2039 | If successful, the new layout id is returned, otherwise nil.") | |
2040 | (layout) | |
2041 | Lisp_Object layout; | |
2042 | { | |
2043 | DWORD kl; | |
2044 | ||
2045 | CHECK_CONS (layout, 0); | |
2046 | CHECK_NUMBER (XCONS (layout)->car, 0); | |
2047 | CHECK_NUMBER (XCONS (layout)->cdr, 0); | |
2048 | ||
2049 | kl = (XINT (XCONS (layout)->car) & 0xffff) | |
2050 | | (XINT (XCONS (layout)->cdr) << 16); | |
2051 | ||
2052 | /* Synchronize layout with input thread. */ | |
2053 | if (dwWindowsThreadId) | |
2054 | { | |
2055 | if (PostThreadMessage (dwWindowsThreadId, WM_EMACS_SETKEYBOARDLAYOUT, | |
2056 | (WPARAM) kl, 0)) | |
2057 | { | |
2058 | MSG msg; | |
2059 | GetMessage (&msg, NULL, WM_EMACS_DONE, WM_EMACS_DONE); | |
2060 | ||
2061 | if (msg.wParam == 0) | |
2062 | return Qnil; | |
2063 | } | |
2064 | } | |
2065 | else if (!ActivateKeyboardLayout ((HKL) kl, 0)) | |
2066 | return Qnil; | |
2067 | ||
2068 | return Fw32_get_keyboard_layout (); | |
2069 | } | |
2070 | ||
b2fc9f3d | 2071 | \f |
93fdf2f8 RS |
2072 | syms_of_ntproc () |
2073 | { | |
b2fc9f3d GV |
2074 | Qhigh = intern ("high"); |
2075 | Qlow = intern ("low"); | |
2076 | ||
a11e68d0 | 2077 | #ifdef HAVE_SOCKETS |
fbd6baed GV |
2078 | defsubr (&Sw32_has_winsock); |
2079 | defsubr (&Sw32_unload_winsock); | |
a11e68d0 | 2080 | #endif |
b2fc9f3d GV |
2081 | defsubr (&Sw32_short_file_name); |
2082 | defsubr (&Sw32_long_file_name); | |
2083 | defsubr (&Sw32_set_process_priority); | |
2084 | defsubr (&Sw32_get_locale_info); | |
2085 | defsubr (&Sw32_get_current_locale_id); | |
2086 | defsubr (&Sw32_get_default_locale_id); | |
ef79fbba | 2087 | defsubr (&Sw32_get_valid_locale_ids); |
b2fc9f3d | 2088 | defsubr (&Sw32_set_current_locale); |
a11e68d0 | 2089 | |
0eaf5926 GV |
2090 | defsubr (&Sw32_get_console_codepage); |
2091 | defsubr (&Sw32_set_console_codepage); | |
2092 | defsubr (&Sw32_get_console_output_codepage); | |
2093 | defsubr (&Sw32_set_console_output_codepage); | |
2094 | defsubr (&Sw32_get_valid_codepages); | |
2095 | defsubr (&Sw32_get_codepage_charset); | |
2096 | ||
2097 | defsubr (&Sw32_get_valid_keyboard_layouts); | |
2098 | defsubr (&Sw32_get_keyboard_layout); | |
2099 | defsubr (&Sw32_set_keyboard_layout); | |
2100 | ||
fbd6baed | 2101 | DEFVAR_LISP ("w32-quote-process-args", &Vw32_quote_process_args, |
93fdf2f8 RS |
2102 | "Non-nil enables quoting of process arguments to ensure correct parsing.\n\ |
2103 | Because Windows does not directly pass argv arrays to child processes,\n\ | |
2104 | programs have to reconstruct the argv array by parsing the command\n\ | |
2105 | line string. For an argument to contain a space, it must be enclosed\n\ | |
2106 | in double quotes or it will be parsed as multiple arguments.\n\ | |
2107 | \n\ | |
b2fc9f3d GV |
2108 | If the value is a character, that character will be used to escape any\n\ |
2109 | quote characters that appear, otherwise a suitable escape character\n\ | |
2110 | will be chosen based on the type of the program."); | |
2111 | Vw32_quote_process_args = Qt; | |
817abdf6 | 2112 | |
fbd6baed GV |
2113 | DEFVAR_LISP ("w32-start-process-show-window", |
2114 | &Vw32_start_process_show_window, | |
82e7c0a9 | 2115 | "When nil, new child processes hide their windows.\n\ |
0ecf7d36 | 2116 | When non-nil, they show their window in the method of their choice."); |
fbd6baed | 2117 | Vw32_start_process_show_window = Qnil; |
0ecf7d36 | 2118 | |
b2fc9f3d GV |
2119 | DEFVAR_LISP ("w32-start-process-share-console", |
2120 | &Vw32_start_process_share_console, | |
82e7c0a9 | 2121 | "When nil, new child processes are given a new console.\n\ |
b2fc9f3d GV |
2122 | When non-nil, they share the Emacs console; this has the limitation of\n\ |
2123 | allowing only only DOS subprocess to run at a time (whether started directly\n\ | |
2124 | or indirectly by Emacs), and preventing Emacs from cleanly terminating the\n\ | |
2125 | subprocess group, but may allow Emacs to interrupt a subprocess that doesn't\n\ | |
2126 | otherwise respond to interrupts from Emacs."); | |
2127 | Vw32_start_process_share_console = Qnil; | |
2128 | ||
82e7c0a9 AI |
2129 | DEFVAR_LISP ("w32-start-process-inherit-error-mode", |
2130 | &Vw32_start_process_inherit_error_mode, | |
2131 | "When nil, new child processes revert to the default error mode.\n\ | |
2132 | When non-nil, they inherit their error mode setting from Emacs, which stops\n\ | |
2133 | them blocking when trying to access unmounted drives etc."); | |
2134 | Vw32_start_process_inherit_error_mode = Qt; | |
2135 | ||
fbd6baed | 2136 | DEFVAR_INT ("w32-pipe-read-delay", &Vw32_pipe_read_delay, |
817abdf6 KH |
2137 | "Forced delay before reading subprocess output.\n\ |
2138 | This is done to improve the buffering of subprocess output, by\n\ | |
2139 | avoiding the inefficiency of frequently reading small amounts of data.\n\ | |
2140 | \n\ | |
2141 | If positive, the value is the number of milliseconds to sleep before\n\ | |
2142 | reading the subprocess output. If negative, the magnitude is the number\n\ | |
2143 | of time slices to wait (effectively boosting the priority of the child\n\ | |
2144 | process temporarily). A value of zero disables waiting entirely."); | |
fbd6baed | 2145 | Vw32_pipe_read_delay = 50; |
0c04091e | 2146 | |
fbd6baed | 2147 | DEFVAR_LISP ("w32-downcase-file-names", &Vw32_downcase_file_names, |
0c04091e RS |
2148 | "Non-nil means convert all-upper case file names to lower case.\n\ |
2149 | This applies when performing completions and file name expansion."); | |
fbd6baed | 2150 | Vw32_downcase_file_names = Qnil; |
b2fc9f3d GV |
2151 | |
2152 | #if 0 | |
2153 | DEFVAR_LISP ("w32-generate-fake-inodes", &Vw32_generate_fake_inodes, | |
2154 | "Non-nil means attempt to fake realistic inode values.\n\ | |
2155 | This works by hashing the truename of files, and should detect \n\ | |
2156 | aliasing between long and short (8.3 DOS) names, but can have\n\ | |
2157 | false positives because of hash collisions. Note that determing\n\ | |
2158 | the truename of a file can be slow."); | |
2159 | Vw32_generate_fake_inodes = Qnil; | |
2160 | #endif | |
2161 | ||
2162 | DEFVAR_LISP ("w32-get-true-file-attributes", &Vw32_get_true_file_attributes, | |
2163 | "Non-nil means determine accurate link count in file-attributes.\n\ | |
2164 | This option slows down file-attributes noticeably, so is disabled by\n\ | |
2165 | default. Note that it is only useful for files on NTFS volumes,\n\ | |
2166 | where hard links are supported."); | |
2167 | Vw32_get_true_file_attributes = Qnil; | |
93fdf2f8 | 2168 | } |
c519b5e1 | 2169 | /* end of ntproc.c */ |