Commit | Line | Data |
---|---|---|
e9e23e23 | 1 | /* Process support for GNU Emacs on the Microsoft W32 API. |
dbb70029 | 2 | Copyright (C) 1992, 1995, 1999, 2000, 2001 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 | 40 | #include <windows.h> |
42c95ffb AI |
41 | #ifdef __GNUC__ |
42 | /* This definition is missing from mingw32 headers. */ | |
43 | extern BOOL WINAPI IsValidLocale(LCID, DWORD); | |
44 | #endif | |
6cdfb6e6 RS |
45 | |
46 | #include "lisp.h" | |
489f9371 | 47 | #include "w32.h" |
b2fc9f3d | 48 | #include "w32heap.h" |
6cdfb6e6 | 49 | #include "systime.h" |
3d7eead0 GV |
50 | #include "syswait.h" |
51 | #include "process.h" | |
e7c15bba | 52 | #include "syssignal.h" |
ef79fbba | 53 | #include "w32term.h" |
3d7eead0 | 54 | |
93fdf2f8 RS |
55 | /* Control whether spawnve quotes arguments as necessary to ensure |
56 | correct parsing by child process. Because not all uses of spawnve | |
57 | are careful about constructing argv arrays, we make this behaviour | |
58 | conditional (off by default). */ | |
fbd6baed | 59 | Lisp_Object Vw32_quote_process_args; |
93fdf2f8 | 60 | |
0ecf7d36 RS |
61 | /* Control whether create_child causes the process' window to be |
62 | hidden. The default is nil. */ | |
fbd6baed | 63 | Lisp_Object Vw32_start_process_show_window; |
0ecf7d36 | 64 | |
b2fc9f3d GV |
65 | /* Control whether create_child causes the process to inherit Emacs' |
66 | console window, or be given a new one of its own. The default is | |
67 | nil, to allow multiple DOS programs to run on Win95. Having separate | |
68 | consoles also allows Emacs to cleanly terminate process groups. */ | |
69 | Lisp_Object Vw32_start_process_share_console; | |
70 | ||
82e7c0a9 AI |
71 | /* Control whether create_child cause the process to inherit Emacs' |
72 | error mode setting. The default is t, to minimize the possibility of | |
73 | subprocesses blocking when accessing unmounted drives. */ | |
74 | Lisp_Object Vw32_start_process_inherit_error_mode; | |
75 | ||
817abdf6 KH |
76 | /* Time to sleep before reading from a subprocess output pipe - this |
77 | avoids the inefficiency of frequently reading small amounts of data. | |
78 | This is primarily necessary for handling DOS processes on Windows 95, | |
e9e23e23 | 79 | but is useful for W32 processes on both Windows 95 and NT as well. */ |
fbd6baed | 80 | Lisp_Object Vw32_pipe_read_delay; |
817abdf6 | 81 | |
0c04091e RS |
82 | /* Control conversion of upper case file names to lower case. |
83 | nil means no, t means yes. */ | |
fbd6baed | 84 | Lisp_Object Vw32_downcase_file_names; |
0c04091e | 85 | |
b2fc9f3d GV |
86 | /* Control whether stat() attempts to generate fake but hopefully |
87 | "accurate" inode values, by hashing the absolute truenames of files. | |
88 | This should detect aliasing between long and short names, but still | |
89 | allows the possibility of hash collisions. */ | |
90 | Lisp_Object Vw32_generate_fake_inodes; | |
91 | ||
92 | /* Control whether stat() attempts to determine file type and link count | |
93 | exactly, at the expense of slower operation. Since true hard links | |
94 | are supported on NTFS volumes, this is only relevant on NT. */ | |
95 | Lisp_Object Vw32_get_true_file_attributes; | |
96 | ||
97 | Lisp_Object Qhigh, Qlow; | |
817abdf6 | 98 | |
6cdfb6e6 | 99 | #ifdef EMACSDEBUG |
c519b5e1 | 100 | void _DebPrint (const char *fmt, ...) |
6cdfb6e6 | 101 | { |
c519b5e1 | 102 | char buf[1024]; |
6cdfb6e6 RS |
103 | va_list args; |
104 | ||
105 | va_start (args, fmt); | |
106 | vsprintf (buf, fmt, args); | |
107 | va_end (args); | |
108 | OutputDebugString (buf); | |
109 | } | |
110 | #endif | |
111 | ||
c519b5e1 | 112 | typedef void (_CALLBACK_ *signal_handler)(int); |
6cdfb6e6 RS |
113 | |
114 | /* Signal handlers...SIG_DFL == 0 so this is initialized correctly. */ | |
115 | static signal_handler sig_handlers[NSIG]; | |
116 | ||
117 | /* Fake signal implementation to record the SIGCHLD handler. */ | |
118 | signal_handler | |
c519b5e1 | 119 | sys_signal (int sig, signal_handler handler) |
6cdfb6e6 RS |
120 | { |
121 | signal_handler old; | |
122 | ||
123 | if (sig != SIGCHLD) | |
124 | { | |
125 | errno = EINVAL; | |
126 | return SIG_ERR; | |
127 | } | |
128 | old = sig_handlers[sig]; | |
129 | sig_handlers[sig] = handler; | |
130 | return old; | |
131 | } | |
132 | ||
c519b5e1 GV |
133 | /* Defined in <process.h> which conflicts with the local copy */ |
134 | #define _P_NOWAIT 1 | |
135 | ||
136 | /* Child process management list. */ | |
137 | int child_proc_count = 0; | |
138 | child_process child_procs[ MAX_CHILDREN ]; | |
139 | child_process *dead_child = NULL; | |
140 | ||
141 | DWORD WINAPI reader_thread (void *arg); | |
142 | ||
6cdfb6e6 | 143 | /* Find an unused process slot. */ |
c519b5e1 | 144 | child_process * |
6cdfb6e6 RS |
145 | new_child (void) |
146 | { | |
147 | child_process *cp; | |
c519b5e1 | 148 | DWORD id; |
6cdfb6e6 RS |
149 | |
150 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) | |
151 | if (!CHILD_ACTIVE (cp)) | |
c519b5e1 GV |
152 | goto Initialise; |
153 | if (child_proc_count == MAX_CHILDREN) | |
154 | return NULL; | |
155 | cp = &child_procs[child_proc_count++]; | |
156 | ||
157 | Initialise: | |
158 | memset (cp, 0, sizeof(*cp)); | |
159 | cp->fd = -1; | |
160 | cp->pid = -1; | |
161 | cp->procinfo.hProcess = NULL; | |
162 | cp->status = STATUS_READ_ERROR; | |
163 | ||
164 | /* use manual reset event so that select() will function properly */ | |
165 | cp->char_avail = CreateEvent (NULL, TRUE, FALSE, NULL); | |
166 | if (cp->char_avail) | |
167 | { | |
168 | cp->char_consumed = CreateEvent (NULL, FALSE, FALSE, NULL); | |
169 | if (cp->char_consumed) | |
170 | { | |
171 | cp->thrd = CreateThread (NULL, 1024, reader_thread, cp, 0, &id); | |
172 | if (cp->thrd) | |
173 | return cp; | |
174 | } | |
175 | } | |
176 | delete_child (cp); | |
177 | return NULL; | |
178 | } | |
179 | ||
180 | void | |
181 | delete_child (child_process *cp) | |
182 | { | |
183 | int i; | |
184 | ||
185 | /* Should not be deleting a child that is still needed. */ | |
186 | for (i = 0; i < MAXDESC; i++) | |
187 | if (fd_info[i].cp == cp) | |
188 | abort (); | |
189 | ||
190 | if (!CHILD_ACTIVE (cp)) | |
191 | return; | |
192 | ||
193 | /* reap thread if necessary */ | |
194 | if (cp->thrd) | |
195 | { | |
196 | DWORD rc; | |
197 | ||
198 | if (GetExitCodeThread (cp->thrd, &rc) && rc == STILL_ACTIVE) | |
199 | { | |
200 | /* let the thread exit cleanly if possible */ | |
201 | cp->status = STATUS_READ_ERROR; | |
202 | SetEvent (cp->char_consumed); | |
203 | if (WaitForSingleObject (cp->thrd, 1000) != WAIT_OBJECT_0) | |
204 | { | |
205 | DebPrint (("delete_child.WaitForSingleObject (thread) failed " | |
206 | "with %lu for fd %ld\n", GetLastError (), cp->fd)); | |
207 | TerminateThread (cp->thrd, 0); | |
208 | } | |
209 | } | |
210 | CloseHandle (cp->thrd); | |
211 | cp->thrd = NULL; | |
212 | } | |
213 | if (cp->char_avail) | |
214 | { | |
215 | CloseHandle (cp->char_avail); | |
216 | cp->char_avail = NULL; | |
217 | } | |
218 | if (cp->char_consumed) | |
219 | { | |
220 | CloseHandle (cp->char_consumed); | |
221 | cp->char_consumed = NULL; | |
222 | } | |
223 | ||
224 | /* update child_proc_count (highest numbered slot in use plus one) */ | |
225 | if (cp == child_procs + child_proc_count - 1) | |
226 | { | |
227 | for (i = child_proc_count-1; i >= 0; i--) | |
228 | if (CHILD_ACTIVE (&child_procs[i])) | |
229 | { | |
230 | child_proc_count = i + 1; | |
231 | break; | |
232 | } | |
233 | } | |
234 | if (i < 0) | |
235 | child_proc_count = 0; | |
6cdfb6e6 RS |
236 | } |
237 | ||
238 | /* Find a child by pid. */ | |
239 | static child_process * | |
240 | find_child_pid (DWORD pid) | |
241 | { | |
242 | child_process *cp; | |
c519b5e1 | 243 | |
6cdfb6e6 RS |
244 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) |
245 | if (CHILD_ACTIVE (cp) && pid == cp->pid) | |
246 | return cp; | |
247 | return NULL; | |
248 | } | |
249 | ||
6cdfb6e6 | 250 | |
c519b5e1 GV |
251 | /* Thread proc for child process and socket reader threads. Each thread |
252 | is normally blocked until woken by select() to check for input by | |
253 | reading one char. When the read completes, char_avail is signalled | |
254 | to wake up the select emulator and the thread blocks itself again. */ | |
6cdfb6e6 RS |
255 | DWORD WINAPI |
256 | reader_thread (void *arg) | |
257 | { | |
258 | child_process *cp; | |
259 | ||
260 | /* Our identity */ | |
261 | cp = (child_process *)arg; | |
262 | ||
263 | /* We have to wait for the go-ahead before we can start */ | |
b2fc9f3d GV |
264 | if (cp == NULL |
265 | || WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0) | |
c519b5e1 GV |
266 | return 1; |
267 | ||
6cdfb6e6 RS |
268 | for (;;) |
269 | { | |
c519b5e1 GV |
270 | int rc; |
271 | ||
272 | rc = _sys_read_ahead (cp->fd); | |
273 | ||
274 | /* The name char_avail is a misnomer - it really just means the | |
275 | read-ahead has completed, whether successfully or not. */ | |
6cdfb6e6 RS |
276 | if (!SetEvent (cp->char_avail)) |
277 | { | |
278 | DebPrint (("reader_thread.SetEvent failed with %lu for fd %ld\n", | |
279 | GetLastError (), cp->fd)); | |
c519b5e1 GV |
280 | return 1; |
281 | } | |
282 | ||
283 | if (rc == STATUS_READ_ERROR) | |
284 | return 1; | |
6cdfb6e6 RS |
285 | |
286 | /* If the read died, the child has died so let the thread die */ | |
c519b5e1 | 287 | if (rc == STATUS_READ_FAILED) |
6cdfb6e6 RS |
288 | break; |
289 | ||
290 | /* Wait until our input is acknowledged before reading again */ | |
291 | if (WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0) | |
292 | { | |
293 | DebPrint (("reader_thread.WaitForSingleObject failed with " | |
294 | "%lu for fd %ld\n", GetLastError (), cp->fd)); | |
295 | break; | |
296 | } | |
297 | } | |
298 | return 0; | |
299 | } | |
300 | ||
b2fc9f3d GV |
301 | /* To avoid Emacs changing directory, we just record here the directory |
302 | the new process should start in. This is set just before calling | |
303 | sys_spawnve, and is not generally valid at any other time. */ | |
304 | static char * process_dir; | |
305 | ||
6cdfb6e6 | 306 | static BOOL |
a55a5f3c | 307 | create_child (char *exe, char *cmdline, char *env, int is_gui_app, |
c519b5e1 | 308 | int * pPid, child_process *cp) |
6cdfb6e6 | 309 | { |
6cdfb6e6 RS |
310 | STARTUPINFO start; |
311 | SECURITY_ATTRIBUTES sec_attrs; | |
42c95ffb | 312 | #if 0 |
6cdfb6e6 | 313 | SECURITY_DESCRIPTOR sec_desc; |
42c95ffb | 314 | #endif |
82e7c0a9 | 315 | DWORD flags; |
b2fc9f3d | 316 | char dir[ MAXPATHLEN ]; |
6cdfb6e6 | 317 | |
c519b5e1 | 318 | if (cp == NULL) abort (); |
6cdfb6e6 RS |
319 | |
320 | memset (&start, 0, sizeof (start)); | |
321 | start.cb = sizeof (start); | |
322 | ||
58d4e829 | 323 | #ifdef HAVE_NTGUI |
a55a5f3c | 324 | if (NILP (Vw32_start_process_show_window) && !is_gui_app) |
0ecf7d36 RS |
325 | start.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW; |
326 | else | |
327 | start.dwFlags = STARTF_USESTDHANDLES; | |
58d4e829 GV |
328 | start.wShowWindow = SW_HIDE; |
329 | ||
330 | start.hStdInput = GetStdHandle (STD_INPUT_HANDLE); | |
331 | start.hStdOutput = GetStdHandle (STD_OUTPUT_HANDLE); | |
332 | start.hStdError = GetStdHandle (STD_ERROR_HANDLE); | |
333 | #endif /* HAVE_NTGUI */ | |
334 | ||
42c95ffb | 335 | #if 0 |
6cdfb6e6 RS |
336 | /* Explicitly specify no security */ |
337 | if (!InitializeSecurityDescriptor (&sec_desc, SECURITY_DESCRIPTOR_REVISION)) | |
c519b5e1 | 338 | goto EH_Fail; |
6cdfb6e6 | 339 | if (!SetSecurityDescriptorDacl (&sec_desc, TRUE, NULL, FALSE)) |
c519b5e1 | 340 | goto EH_Fail; |
42c95ffb | 341 | #endif |
6cdfb6e6 | 342 | sec_attrs.nLength = sizeof (sec_attrs); |
42c95ffb | 343 | sec_attrs.lpSecurityDescriptor = NULL /* &sec_desc */; |
6cdfb6e6 RS |
344 | sec_attrs.bInheritHandle = FALSE; |
345 | ||
b2fc9f3d GV |
346 | strcpy (dir, process_dir); |
347 | unixtodos_filename (dir); | |
82e7c0a9 AI |
348 | |
349 | flags = (!NILP (Vw32_start_process_share_console) | |
350 | ? CREATE_NEW_PROCESS_GROUP | |
351 | : CREATE_NEW_CONSOLE); | |
352 | if (NILP (Vw32_start_process_inherit_error_mode)) | |
353 | flags |= CREATE_DEFAULT_ERROR_MODE; | |
6cdfb6e6 | 354 | if (!CreateProcess (exe, cmdline, &sec_attrs, NULL, TRUE, |
82e7c0a9 | 355 | flags, env, dir, &start, &cp->procinfo)) |
c519b5e1 GV |
356 | goto EH_Fail; |
357 | ||
358 | cp->pid = (int) cp->procinfo.dwProcessId; | |
359 | ||
360 | /* Hack for Windows 95, which assigns large (ie negative) pids */ | |
361 | if (cp->pid < 0) | |
362 | cp->pid = -cp->pid; | |
363 | ||
364 | /* pid must fit in a Lisp_Int */ | |
365 | cp->pid = (cp->pid & VALMASK); | |
366 | ||
c519b5e1 | 367 | *pPid = cp->pid; |
b2fc9f3d | 368 | |
6cdfb6e6 | 369 | return TRUE; |
b2fc9f3d | 370 | |
6cdfb6e6 | 371 | EH_Fail: |
c519b5e1 | 372 | DebPrint (("create_child.CreateProcess failed: %ld\n", GetLastError());); |
6cdfb6e6 RS |
373 | return FALSE; |
374 | } | |
375 | ||
376 | /* create_child doesn't know what emacs' file handle will be for waiting | |
377 | on output from the child, so we need to make this additional call | |
378 | to register the handle with the process | |
379 | This way the select emulator knows how to match file handles with | |
380 | entries in child_procs. */ | |
381 | void | |
382 | register_child (int pid, int fd) | |
383 | { | |
384 | child_process *cp; | |
385 | ||
386 | cp = find_child_pid (pid); | |
387 | if (cp == NULL) | |
388 | { | |
389 | DebPrint (("register_child unable to find pid %lu\n", pid)); | |
390 | return; | |
391 | } | |
392 | ||
393 | #ifdef FULL_DEBUG | |
394 | DebPrint (("register_child registered fd %d with pid %lu\n", fd, pid)); | |
395 | #endif | |
396 | ||
397 | cp->fd = fd; | |
6cdfb6e6 | 398 | |
c519b5e1 GV |
399 | /* thread is initially blocked until select is called; set status so |
400 | that select will release thread */ | |
401 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
402 | ||
403 | /* attach child_process to fd_info */ | |
404 | if (fd_info[fd].cp != NULL) | |
6cdfb6e6 | 405 | { |
c519b5e1 GV |
406 | DebPrint (("register_child: fd_info[%d] apparently in use!\n", fd)); |
407 | abort (); | |
6cdfb6e6 | 408 | } |
c519b5e1 GV |
409 | |
410 | fd_info[fd].cp = cp; | |
6cdfb6e6 RS |
411 | } |
412 | ||
413 | /* When a process dies its pipe will break so the reader thread will | |
414 | signal failure to the select emulator. | |
415 | The select emulator then calls this routine to clean up. | |
416 | Since the thread signaled failure we can assume it is exiting. */ | |
417 | static void | |
c519b5e1 | 418 | reap_subprocess (child_process *cp) |
6cdfb6e6 | 419 | { |
c519b5e1 | 420 | if (cp->procinfo.hProcess) |
6cdfb6e6 | 421 | { |
c519b5e1 | 422 | /* Reap the process */ |
b2fc9f3d GV |
423 | #ifdef FULL_DEBUG |
424 | /* Process should have already died before we are called. */ | |
425 | if (WaitForSingleObject (cp->procinfo.hProcess, 0) != WAIT_OBJECT_0) | |
426 | DebPrint (("reap_subprocess: child fpr fd %d has not died yet!", cp->fd)); | |
427 | #endif | |
c519b5e1 GV |
428 | CloseHandle (cp->procinfo.hProcess); |
429 | cp->procinfo.hProcess = NULL; | |
430 | CloseHandle (cp->procinfo.hThread); | |
431 | cp->procinfo.hThread = NULL; | |
6cdfb6e6 | 432 | } |
c519b5e1 GV |
433 | |
434 | /* For asynchronous children, the child_proc resources will be freed | |
435 | when the last pipe read descriptor is closed; for synchronous | |
436 | children, we must explicitly free the resources now because | |
437 | register_child has not been called. */ | |
438 | if (cp->fd == -1) | |
439 | delete_child (cp); | |
6cdfb6e6 RS |
440 | } |
441 | ||
442 | /* Wait for any of our existing child processes to die | |
443 | When it does, close its handle | |
444 | Return the pid and fill in the status if non-NULL. */ | |
22759c72 | 445 | |
6cdfb6e6 | 446 | int |
c519b5e1 | 447 | sys_wait (int *status) |
6cdfb6e6 RS |
448 | { |
449 | DWORD active, retval; | |
450 | int nh; | |
c519b5e1 | 451 | int pid; |
6cdfb6e6 RS |
452 | child_process *cp, *cps[MAX_CHILDREN]; |
453 | HANDLE wait_hnd[MAX_CHILDREN]; | |
454 | ||
455 | nh = 0; | |
456 | if (dead_child != NULL) | |
457 | { | |
458 | /* We want to wait for a specific child */ | |
c519b5e1 | 459 | wait_hnd[nh] = dead_child->procinfo.hProcess; |
6cdfb6e6 | 460 | cps[nh] = dead_child; |
c519b5e1 | 461 | if (!wait_hnd[nh]) abort (); |
6cdfb6e6 | 462 | nh++; |
b2fc9f3d GV |
463 | active = 0; |
464 | goto get_result; | |
6cdfb6e6 RS |
465 | } |
466 | else | |
467 | { | |
468 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) | |
c519b5e1 GV |
469 | /* some child_procs might be sockets; ignore them */ |
470 | if (CHILD_ACTIVE (cp) && cp->procinfo.hProcess) | |
6cdfb6e6 | 471 | { |
c519b5e1 | 472 | wait_hnd[nh] = cp->procinfo.hProcess; |
6cdfb6e6 RS |
473 | cps[nh] = cp; |
474 | nh++; | |
475 | } | |
476 | } | |
477 | ||
478 | if (nh == 0) | |
479 | { | |
480 | /* Nothing to wait on, so fail */ | |
481 | errno = ECHILD; | |
482 | return -1; | |
483 | } | |
b2fc9f3d GV |
484 | |
485 | do | |
486 | { | |
487 | /* Check for quit about once a second. */ | |
488 | QUIT; | |
489 | active = WaitForMultipleObjects (nh, wait_hnd, FALSE, 1000); | |
490 | } while (active == WAIT_TIMEOUT); | |
491 | ||
6cdfb6e6 RS |
492 | if (active == WAIT_FAILED) |
493 | { | |
494 | errno = EBADF; | |
495 | return -1; | |
496 | } | |
b2fc9f3d GV |
497 | else if (active >= WAIT_OBJECT_0 |
498 | && active < WAIT_OBJECT_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
499 | { |
500 | active -= WAIT_OBJECT_0; | |
501 | } | |
b2fc9f3d GV |
502 | else if (active >= WAIT_ABANDONED_0 |
503 | && active < WAIT_ABANDONED_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
504 | { |
505 | active -= WAIT_ABANDONED_0; | |
506 | } | |
b2fc9f3d GV |
507 | else |
508 | abort (); | |
509 | ||
510 | get_result: | |
6cdfb6e6 RS |
511 | if (!GetExitCodeProcess (wait_hnd[active], &retval)) |
512 | { | |
513 | DebPrint (("Wait.GetExitCodeProcess failed with %lu\n", | |
514 | GetLastError ())); | |
515 | retval = 1; | |
516 | } | |
517 | if (retval == STILL_ACTIVE) | |
518 | { | |
519 | /* Should never happen */ | |
520 | DebPrint (("Wait.WaitForMultipleObjects returned an active process\n")); | |
521 | errno = EINVAL; | |
522 | return -1; | |
523 | } | |
bc69349b RS |
524 | |
525 | /* Massage the exit code from the process to match the format expected | |
8e6208c5 | 526 | by the WIFSTOPPED et al macros in syswait.h. Only WIFSIGNALED and |
bc69349b RS |
527 | WIFEXITED are supported; WIFSTOPPED doesn't make sense under NT. */ |
528 | ||
529 | if (retval == STATUS_CONTROL_C_EXIT) | |
530 | retval = SIGINT; | |
531 | else | |
532 | retval <<= 8; | |
c519b5e1 | 533 | |
6cdfb6e6 | 534 | cp = cps[active]; |
c519b5e1 GV |
535 | pid = cp->pid; |
536 | #ifdef FULL_DEBUG | |
537 | DebPrint (("Wait signaled with process pid %d\n", cp->pid)); | |
538 | #endif | |
22759c72 | 539 | |
6cdfb6e6 RS |
540 | if (status) |
541 | { | |
22759c72 KH |
542 | *status = retval; |
543 | } | |
544 | else if (synch_process_alive) | |
545 | { | |
546 | synch_process_alive = 0; | |
22759c72 | 547 | |
3d7eead0 GV |
548 | /* Report the status of the synchronous process. */ |
549 | if (WIFEXITED (retval)) | |
550 | synch_process_retcode = WRETCODE (retval); | |
551 | else if (WIFSIGNALED (retval)) | |
552 | { | |
553 | int code = WTERMSIG (retval); | |
68c45bf0 PE |
554 | char *signame; |
555 | ||
ca9c0567 | 556 | synchronize_system_messages_locale (); |
68c45bf0 PE |
557 | signame = strsignal (code); |
558 | ||
3d7eead0 GV |
559 | if (signame == 0) |
560 | signame = "unknown"; | |
561 | ||
562 | synch_process_death = signame; | |
563 | } | |
c519b5e1 GV |
564 | |
565 | reap_subprocess (cp); | |
6cdfb6e6 | 566 | } |
b2fc9f3d GV |
567 | |
568 | reap_subprocess (cp); | |
6cdfb6e6 | 569 | |
c519b5e1 | 570 | return pid; |
6cdfb6e6 RS |
571 | } |
572 | ||
b2fc9f3d | 573 | void |
a55a5f3c | 574 | w32_executable_type (char * filename, int * is_dos_app, int * is_cygnus_app, int * is_gui_app) |
817abdf6 | 575 | { |
b2fc9f3d GV |
576 | file_data executable; |
577 | char * p; | |
578 | ||
579 | /* Default values in case we can't tell for sure. */ | |
580 | *is_dos_app = FALSE; | |
581 | *is_cygnus_app = FALSE; | |
a55a5f3c | 582 | *is_gui_app = FALSE; |
b2fc9f3d GV |
583 | |
584 | if (!open_input_file (&executable, filename)) | |
585 | return; | |
817abdf6 | 586 | |
b2fc9f3d GV |
587 | p = strrchr (filename, '.'); |
588 | ||
589 | /* We can only identify DOS .com programs from the extension. */ | |
590 | if (p && stricmp (p, ".com") == 0) | |
591 | *is_dos_app = TRUE; | |
592 | else if (p && (stricmp (p, ".bat") == 0 | |
593 | || stricmp (p, ".cmd") == 0)) | |
594 | { | |
595 | /* A DOS shell script - it appears that CreateProcess is happy to | |
596 | accept this (somewhat surprisingly); presumably it looks at | |
597 | COMSPEC to determine what executable to actually invoke. | |
598 | Therefore, we have to do the same here as well. */ | |
599 | /* Actually, I think it uses the program association for that | |
600 | extension, which is defined in the registry. */ | |
601 | p = egetenv ("COMSPEC"); | |
602 | if (p) | |
a55a5f3c | 603 | w32_executable_type (p, is_dos_app, is_cygnus_app, is_gui_app); |
b2fc9f3d GV |
604 | } |
605 | else | |
817abdf6 | 606 | { |
b2fc9f3d GV |
607 | /* Look for DOS .exe signature - if found, we must also check that |
608 | it isn't really a 16- or 32-bit Windows exe, since both formats | |
609 | start with a DOS program stub. Note that 16-bit Windows | |
610 | executables use the OS/2 1.x format. */ | |
817abdf6 | 611 | |
b2fc9f3d GV |
612 | IMAGE_DOS_HEADER * dos_header; |
613 | IMAGE_NT_HEADERS * nt_header; | |
614 | ||
615 | dos_header = (PIMAGE_DOS_HEADER) executable.file_base; | |
616 | if (dos_header->e_magic != IMAGE_DOS_SIGNATURE) | |
617 | goto unwind; | |
618 | ||
619 | nt_header = (PIMAGE_NT_HEADERS) ((char *) dos_header + dos_header->e_lfanew); | |
620 | ||
ef79fbba | 621 | if ((char *) nt_header > (char *) dos_header + executable.size) |
817abdf6 | 622 | { |
b2fc9f3d GV |
623 | /* Some dos headers (pkunzip) have bogus e_lfanew fields. */ |
624 | *is_dos_app = TRUE; | |
625 | } | |
626 | else if (nt_header->Signature != IMAGE_NT_SIGNATURE | |
627 | && LOWORD (nt_header->Signature) != IMAGE_OS2_SIGNATURE) | |
628 | { | |
629 | *is_dos_app = TRUE; | |
630 | } | |
631 | else if (nt_header->Signature == IMAGE_NT_SIGNATURE) | |
632 | { | |
633 | /* Look for cygwin.dll in DLL import list. */ | |
634 | IMAGE_DATA_DIRECTORY import_dir = | |
635 | nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT]; | |
636 | IMAGE_IMPORT_DESCRIPTOR * imports; | |
637 | IMAGE_SECTION_HEADER * section; | |
638 | ||
639 | section = rva_to_section (import_dir.VirtualAddress, nt_header); | |
640 | imports = RVA_TO_PTR (import_dir.VirtualAddress, section, executable); | |
641 | ||
642 | for ( ; imports->Name; imports++) | |
643 | { | |
644 | char * dllname = RVA_TO_PTR (imports->Name, section, executable); | |
645 | ||
a7325b56 AI |
646 | /* The exact name of the cygwin dll has changed with |
647 | various releases, but hopefully this will be reasonably | |
648 | future proof. */ | |
649 | if (strncmp (dllname, "cygwin", 6) == 0) | |
b2fc9f3d GV |
650 | { |
651 | *is_cygnus_app = TRUE; | |
652 | break; | |
653 | } | |
654 | } | |
a55a5f3c AI |
655 | |
656 | /* Check whether app is marked as a console or windowed (aka | |
657 | GUI) app. Accept Posix and OS2 subsytem apps as console | |
658 | apps. */ | |
659 | *is_gui_app = (nt_header->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_GUI); | |
b2fc9f3d | 660 | } |
817abdf6 | 661 | } |
b2fc9f3d GV |
662 | |
663 | unwind: | |
664 | close_file_data (&executable); | |
817abdf6 KH |
665 | } |
666 | ||
d9709fde | 667 | int |
42c95ffb | 668 | compare_env (const void *strp1, const void *strp2) |
d9709fde | 669 | { |
42c95ffb | 670 | const char *str1 = *(const char **)strp1, *str2 = *(const char **)strp2; |
d9709fde GV |
671 | |
672 | while (*str1 && *str2 && *str1 != '=' && *str2 != '=') | |
673 | { | |
11c22fff AI |
674 | /* Sort order in command.com/cmd.exe is based on uppercasing |
675 | names, so do the same here. */ | |
676 | if (toupper (*str1) > toupper (*str2)) | |
d9709fde | 677 | return 1; |
11c22fff | 678 | else if (toupper (*str1) < toupper (*str2)) |
d9709fde GV |
679 | return -1; |
680 | str1++, str2++; | |
681 | } | |
682 | ||
683 | if (*str1 == '=' && *str2 == '=') | |
684 | return 0; | |
685 | else if (*str1 == '=') | |
686 | return -1; | |
687 | else | |
688 | return 1; | |
689 | } | |
690 | ||
691 | void | |
692 | merge_and_sort_env (char **envp1, char **envp2, char **new_envp) | |
693 | { | |
694 | char **optr, **nptr; | |
695 | int num; | |
696 | ||
697 | nptr = new_envp; | |
698 | optr = envp1; | |
699 | while (*optr) | |
700 | *nptr++ = *optr++; | |
701 | num = optr - envp1; | |
702 | ||
703 | optr = envp2; | |
704 | while (*optr) | |
705 | *nptr++ = *optr++; | |
706 | num += optr - envp2; | |
707 | ||
708 | qsort (new_envp, num, sizeof (char *), compare_env); | |
709 | ||
710 | *nptr = NULL; | |
711 | } | |
6cdfb6e6 RS |
712 | |
713 | /* When a new child process is created we need to register it in our list, | |
714 | so intercept spawn requests. */ | |
715 | int | |
c519b5e1 | 716 | sys_spawnve (int mode, char *cmdname, char **argv, char **envp) |
6cdfb6e6 | 717 | { |
0a4de642 | 718 | Lisp_Object program, full; |
6cdfb6e6 | 719 | char *cmdline, *env, *parg, **targ; |
d9709fde | 720 | int arglen, numenv; |
c519b5e1 GV |
721 | int pid; |
722 | child_process *cp; | |
a55a5f3c | 723 | int is_dos_app, is_cygnus_app, is_gui_app; |
b2fc9f3d GV |
724 | int do_quoting = 0; |
725 | char escape_char; | |
d9709fde GV |
726 | /* We pass our process ID to our children by setting up an environment |
727 | variable in their environment. */ | |
728 | char ppid_env_var_buffer[64]; | |
729 | char *extra_env[] = {ppid_env_var_buffer, NULL}; | |
dbb70029 | 730 | char *sepchars = " \t"; |
d9709fde | 731 | |
c519b5e1 GV |
732 | /* We don't care about the other modes */ |
733 | if (mode != _P_NOWAIT) | |
734 | { | |
735 | errno = EINVAL; | |
736 | return -1; | |
737 | } | |
0a4de642 RS |
738 | |
739 | /* Handle executable names without an executable suffix. */ | |
740 | program = make_string (cmdname, strlen (cmdname)); | |
741 | if (NILP (Ffile_executable_p (program))) | |
742 | { | |
743 | struct gcpro gcpro1; | |
744 | ||
745 | full = Qnil; | |
746 | GCPRO1 (program); | |
c0ec53ad | 747 | openp (Vexec_path, program, Vexec_suffixes, &full, 1); |
0a4de642 RS |
748 | UNGCPRO; |
749 | if (NILP (full)) | |
750 | { | |
751 | errno = EINVAL; | |
752 | return -1; | |
753 | } | |
b2fc9f3d | 754 | program = full; |
0a4de642 RS |
755 | } |
756 | ||
b2fc9f3d GV |
757 | /* make sure argv[0] and cmdname are both in DOS format */ |
758 | cmdname = XSTRING (program)->data; | |
c519b5e1 GV |
759 | unixtodos_filename (cmdname); |
760 | argv[0] = cmdname; | |
817abdf6 | 761 | |
ef79fbba | 762 | /* Determine whether program is a 16-bit DOS executable, or a w32 |
b2fc9f3d GV |
763 | executable that is implicitly linked to the Cygnus dll (implying it |
764 | was compiled with the Cygnus GNU toolchain and hence relies on | |
765 | cygwin.dll to parse the command line - we use this to decide how to | |
a55a5f3c AI |
766 | escape quote chars in command line args that must be quoted). |
767 | ||
768 | Also determine whether it is a GUI app, so that we don't hide its | |
769 | initial window unless specifically requested. */ | |
770 | w32_executable_type (cmdname, &is_dos_app, &is_cygnus_app, &is_gui_app); | |
b2fc9f3d GV |
771 | |
772 | /* On Windows 95, if cmdname is a DOS app, we invoke a helper | |
773 | application to start it by specifying the helper app as cmdname, | |
774 | while leaving the real app name as argv[0]. */ | |
775 | if (is_dos_app) | |
817abdf6 | 776 | { |
b2fc9f3d GV |
777 | cmdname = alloca (MAXPATHLEN); |
778 | if (egetenv ("CMDPROXY")) | |
779 | strcpy (cmdname, egetenv ("CMDPROXY")); | |
780 | else | |
781 | { | |
782 | strcpy (cmdname, XSTRING (Vinvocation_directory)->data); | |
783 | strcat (cmdname, "cmdproxy.exe"); | |
784 | } | |
785 | unixtodos_filename (cmdname); | |
817abdf6 | 786 | } |
6cdfb6e6 RS |
787 | |
788 | /* we have to do some conjuring here to put argv and envp into the | |
789 | form CreateProcess wants... argv needs to be a space separated/null | |
790 | terminated list of parameters, and envp is a null | |
791 | separated/double-null terminated list of parameters. | |
c519b5e1 | 792 | |
b2fc9f3d GV |
793 | Additionally, zero-length args and args containing whitespace or |
794 | quote chars need to be wrapped in double quotes - for this to work, | |
795 | embedded quotes need to be escaped as well. The aim is to ensure | |
796 | the child process reconstructs the argv array we start with | |
797 | exactly, so we treat quotes at the beginning and end of arguments | |
798 | as embedded quotes. | |
799 | ||
ef79fbba | 800 | The w32 GNU-based library from Cygnus doubles quotes to escape |
b2fc9f3d GV |
801 | them, while MSVC uses backslash for escaping. (Actually the MSVC |
802 | startup code does attempt to recognise doubled quotes and accept | |
803 | them, but gets it wrong and ends up requiring three quotes to get a | |
804 | single embedded quote!) So by default we decide whether to use | |
805 | quote or backslash as the escape character based on whether the | |
806 | binary is apparently a Cygnus compiled app. | |
807 | ||
808 | Note that using backslash to escape embedded quotes requires | |
809 | additional special handling if an embedded quote is already | |
810 | preceeded by backslash, or if an arg requiring quoting ends with | |
811 | backslash. In such cases, the run of escape characters needs to be | |
812 | doubled. For consistency, we apply this special handling as long | |
813 | as the escape character is not quote. | |
814 | ||
815 | Since we have no idea how large argv and envp are likely to be we | |
816 | figure out list lengths on the fly and allocate them. */ | |
817 | ||
818 | if (!NILP (Vw32_quote_process_args)) | |
819 | { | |
820 | do_quoting = 1; | |
821 | /* Override escape char by binding w32-quote-process-args to | |
822 | desired character, or use t for auto-selection. */ | |
823 | if (INTEGERP (Vw32_quote_process_args)) | |
824 | escape_char = XINT (Vw32_quote_process_args); | |
825 | else | |
826 | escape_char = is_cygnus_app ? '"' : '\\'; | |
827 | } | |
6cdfb6e6 | 828 | |
dbb70029 GM |
829 | /* Cygwin apps needs quoting a bit more often */ |
830 | if (escape_char == '"') | |
831 | sepchars = "\r\n\t\f '"; | |
832 | ||
6cdfb6e6 RS |
833 | /* do argv... */ |
834 | arglen = 0; | |
835 | targ = argv; | |
836 | while (*targ) | |
837 | { | |
c519b5e1 | 838 | char * p = *targ; |
b2fc9f3d GV |
839 | int need_quotes = 0; |
840 | int escape_char_run = 0; | |
c519b5e1 GV |
841 | |
842 | if (*p == 0) | |
b2fc9f3d GV |
843 | need_quotes = 1; |
844 | for ( ; *p; p++) | |
845 | { | |
dbb70029 GM |
846 | if (escape_char == '"' && *p == '\\') |
847 | /* If it's a Cygwin app, \ needs to be escaped. */ | |
848 | arglen++; | |
849 | else if (*p == '"') | |
b2fc9f3d GV |
850 | { |
851 | /* allow for embedded quotes to be escaped */ | |
852 | arglen++; | |
853 | need_quotes = 1; | |
854 | /* handle the case where the embedded quote is already escaped */ | |
855 | if (escape_char_run > 0) | |
856 | { | |
857 | /* To preserve the arg exactly, we need to double the | |
858 | preceding escape characters (plus adding one to | |
859 | escape the quote character itself). */ | |
860 | arglen += escape_char_run; | |
861 | } | |
862 | } | |
dbb70029 | 863 | else if (strchr (sepchars, *p) != NULL) |
b2fc9f3d GV |
864 | { |
865 | need_quotes = 1; | |
866 | } | |
867 | ||
868 | if (*p == escape_char && escape_char != '"') | |
869 | escape_char_run++; | |
870 | else | |
871 | escape_char_run = 0; | |
872 | } | |
873 | if (need_quotes) | |
874 | { | |
875 | arglen += 2; | |
876 | /* handle the case where the arg ends with an escape char - we | |
877 | must not let the enclosing quote be escaped. */ | |
878 | if (escape_char_run > 0) | |
879 | arglen += escape_char_run; | |
880 | } | |
6cdfb6e6 RS |
881 | arglen += strlen (*targ++) + 1; |
882 | } | |
c519b5e1 | 883 | cmdline = alloca (arglen); |
6cdfb6e6 RS |
884 | targ = argv; |
885 | parg = cmdline; | |
886 | while (*targ) | |
887 | { | |
c519b5e1 | 888 | char * p = *targ; |
b2fc9f3d | 889 | int need_quotes = 0; |
c519b5e1 GV |
890 | |
891 | if (*p == 0) | |
b2fc9f3d | 892 | need_quotes = 1; |
93fdf2f8 | 893 | |
b2fc9f3d | 894 | if (do_quoting) |
93fdf2f8 | 895 | { |
93fdf2f8 | 896 | for ( ; *p; p++) |
dbb70029 | 897 | if ((strchr (sepchars, *p) != NULL) || *p == '"') |
b2fc9f3d | 898 | need_quotes = 1; |
93fdf2f8 | 899 | } |
b2fc9f3d | 900 | if (need_quotes) |
c519b5e1 | 901 | { |
b2fc9f3d | 902 | int escape_char_run = 0; |
c519b5e1 GV |
903 | char * first; |
904 | char * last; | |
905 | ||
906 | p = *targ; | |
907 | first = p; | |
908 | last = p + strlen (p) - 1; | |
909 | *parg++ = '"'; | |
b2fc9f3d GV |
910 | #if 0 |
911 | /* This version does not escape quotes if they occur at the | |
912 | beginning or end of the arg - this could lead to incorrect | |
913 | behaviour when the arg itself represents a command line | |
914 | containing quoted args. I believe this was originally done | |
915 | as a hack to make some things work, before | |
916 | `w32-quote-process-args' was added. */ | |
c519b5e1 GV |
917 | while (*p) |
918 | { | |
919 | if (*p == '"' && p > first && p < last) | |
b2fc9f3d | 920 | *parg++ = escape_char; /* escape embedded quotes */ |
c519b5e1 GV |
921 | *parg++ = *p++; |
922 | } | |
b2fc9f3d GV |
923 | #else |
924 | for ( ; *p; p++) | |
925 | { | |
926 | if (*p == '"') | |
927 | { | |
928 | /* double preceding escape chars if any */ | |
929 | while (escape_char_run > 0) | |
930 | { | |
931 | *parg++ = escape_char; | |
932 | escape_char_run--; | |
933 | } | |
934 | /* escape all quote chars, even at beginning or end */ | |
935 | *parg++ = escape_char; | |
936 | } | |
dbb70029 GM |
937 | else if (escape_char == '"' && *p == '\\') |
938 | *parg++ = '\\'; | |
b2fc9f3d GV |
939 | *parg++ = *p; |
940 | ||
941 | if (*p == escape_char && escape_char != '"') | |
942 | escape_char_run++; | |
943 | else | |
944 | escape_char_run = 0; | |
945 | } | |
946 | /* double escape chars before enclosing quote */ | |
947 | while (escape_char_run > 0) | |
948 | { | |
949 | *parg++ = escape_char; | |
950 | escape_char_run--; | |
951 | } | |
952 | #endif | |
c519b5e1 GV |
953 | *parg++ = '"'; |
954 | } | |
955 | else | |
956 | { | |
957 | strcpy (parg, *targ); | |
958 | parg += strlen (*targ); | |
959 | } | |
6cdfb6e6 | 960 | *parg++ = ' '; |
c519b5e1 | 961 | targ++; |
6cdfb6e6 RS |
962 | } |
963 | *--parg = '\0'; | |
964 | ||
965 | /* and envp... */ | |
966 | arglen = 1; | |
967 | targ = envp; | |
d9709fde | 968 | numenv = 1; /* for end null */ |
6cdfb6e6 RS |
969 | while (*targ) |
970 | { | |
971 | arglen += strlen (*targ++) + 1; | |
d9709fde | 972 | numenv++; |
6cdfb6e6 | 973 | } |
d9709fde | 974 | /* extra env vars... */ |
a5b56dcd | 975 | sprintf (ppid_env_var_buffer, "EM_PARENT_PROCESS_ID=%d", |
6cdfb6e6 RS |
976 | GetCurrentProcessId ()); |
977 | arglen += strlen (ppid_env_var_buffer) + 1; | |
d9709fde | 978 | numenv++; |
6cdfb6e6 | 979 | |
d9709fde GV |
980 | /* merge env passed in and extra env into one, and sort it. */ |
981 | targ = (char **) alloca (numenv * sizeof (char *)); | |
982 | merge_and_sort_env (envp, extra_env, targ); | |
983 | ||
984 | /* concatenate env entries. */ | |
c519b5e1 | 985 | env = alloca (arglen); |
6cdfb6e6 RS |
986 | parg = env; |
987 | while (*targ) | |
988 | { | |
989 | strcpy (parg, *targ); | |
990 | parg += strlen (*targ++); | |
991 | *parg++ = '\0'; | |
992 | } | |
6cdfb6e6 RS |
993 | *parg++ = '\0'; |
994 | *parg = '\0'; | |
c519b5e1 GV |
995 | |
996 | cp = new_child (); | |
997 | if (cp == NULL) | |
998 | { | |
999 | errno = EAGAIN; | |
1000 | return -1; | |
1001 | } | |
6cdfb6e6 RS |
1002 | |
1003 | /* Now create the process. */ | |
a55a5f3c | 1004 | if (!create_child (cmdname, cmdline, env, is_gui_app, &pid, cp)) |
6cdfb6e6 | 1005 | { |
c519b5e1 | 1006 | delete_child (cp); |
6cdfb6e6 | 1007 | errno = ENOEXEC; |
c519b5e1 | 1008 | return -1; |
6cdfb6e6 RS |
1009 | } |
1010 | ||
c519b5e1 | 1011 | return pid; |
6cdfb6e6 RS |
1012 | } |
1013 | ||
1014 | /* Emulate the select call | |
1015 | Wait for available input on any of the given rfds, or timeout if | |
1016 | a timeout is given and no input is detected | |
b2fc9f3d GV |
1017 | wfds and efds are not supported and must be NULL. |
1018 | ||
1019 | For simplicity, we detect the death of child processes here and | |
1020 | synchronously call the SIGCHLD handler. Since it is possible for | |
1021 | children to be created without a corresponding pipe handle from which | |
1022 | to read output, we wait separately on the process handles as well as | |
1023 | the char_avail events for each process pipe. We only call | |
86143765 RS |
1024 | wait/reap_process when the process actually terminates. |
1025 | ||
1026 | To reduce the number of places in which Emacs can be hung such that | |
1027 | C-g is not able to interrupt it, we always wait on interrupt_handle | |
1028 | (which is signalled by the input thread when C-g is detected). If we | |
1029 | detect that we were woken up by C-g, we return -1 with errno set to | |
1030 | EINTR as on Unix. */ | |
6cdfb6e6 RS |
1031 | |
1032 | /* From ntterm.c */ | |
1033 | extern HANDLE keyboard_handle; | |
86143765 RS |
1034 | |
1035 | /* From w32xfns.c */ | |
1036 | extern HANDLE interrupt_handle; | |
1037 | ||
6cdfb6e6 RS |
1038 | /* From process.c */ |
1039 | extern int proc_buffered_char[]; | |
1040 | ||
1041 | int | |
22759c72 KH |
1042 | sys_select (int nfds, SELECT_TYPE *rfds, SELECT_TYPE *wfds, SELECT_TYPE *efds, |
1043 | EMACS_TIME *timeout) | |
6cdfb6e6 RS |
1044 | { |
1045 | SELECT_TYPE orfds; | |
b2fc9f3d GV |
1046 | DWORD timeout_ms, start_time; |
1047 | int i, nh, nc, nr; | |
6cdfb6e6 | 1048 | DWORD active; |
b2fc9f3d GV |
1049 | child_process *cp, *cps[MAX_CHILDREN]; |
1050 | HANDLE wait_hnd[MAXDESC + MAX_CHILDREN]; | |
c519b5e1 | 1051 | int fdindex[MAXDESC]; /* mapping from wait handles back to descriptors */ |
6cdfb6e6 | 1052 | |
b2fc9f3d GV |
1053 | timeout_ms = timeout ? (timeout->tv_sec * 1000 + timeout->tv_usec / 1000) : INFINITE; |
1054 | ||
6cdfb6e6 RS |
1055 | /* If the descriptor sets are NULL but timeout isn't, then just Sleep. */ |
1056 | if (rfds == NULL && wfds == NULL && efds == NULL && timeout != NULL) | |
1057 | { | |
b2fc9f3d | 1058 | Sleep (timeout_ms); |
6cdfb6e6 RS |
1059 | return 0; |
1060 | } | |
1061 | ||
1062 | /* Otherwise, we only handle rfds, so fail otherwise. */ | |
1063 | if (rfds == NULL || wfds != NULL || efds != NULL) | |
1064 | { | |
1065 | errno = EINVAL; | |
1066 | return -1; | |
1067 | } | |
1068 | ||
1069 | orfds = *rfds; | |
1070 | FD_ZERO (rfds); | |
1071 | nr = 0; | |
86143765 RS |
1072 | |
1073 | /* Always wait on interrupt_handle, to detect C-g (quit). */ | |
1074 | wait_hnd[0] = interrupt_handle; | |
1075 | fdindex[0] = -1; | |
6cdfb6e6 | 1076 | |
b2fc9f3d | 1077 | /* Build a list of pipe handles to wait on. */ |
86143765 | 1078 | nh = 1; |
6cdfb6e6 RS |
1079 | for (i = 0; i < nfds; i++) |
1080 | if (FD_ISSET (i, &orfds)) | |
1081 | { | |
1082 | if (i == 0) | |
1083 | { | |
c519b5e1 GV |
1084 | if (keyboard_handle) |
1085 | { | |
1086 | /* Handle stdin specially */ | |
1087 | wait_hnd[nh] = keyboard_handle; | |
1088 | fdindex[nh] = i; | |
1089 | nh++; | |
1090 | } | |
6cdfb6e6 RS |
1091 | |
1092 | /* Check for any emacs-generated input in the queue since | |
1093 | it won't be detected in the wait */ | |
1094 | if (detect_input_pending ()) | |
1095 | { | |
1096 | FD_SET (i, rfds); | |
c519b5e1 | 1097 | return 1; |
6cdfb6e6 RS |
1098 | } |
1099 | } | |
1100 | else | |
1101 | { | |
c519b5e1 GV |
1102 | /* Child process and socket input */ |
1103 | cp = fd_info[i].cp; | |
6cdfb6e6 RS |
1104 | if (cp) |
1105 | { | |
c519b5e1 GV |
1106 | int current_status = cp->status; |
1107 | ||
1108 | if (current_status == STATUS_READ_ACKNOWLEDGED) | |
1109 | { | |
1110 | /* Tell reader thread which file handle to use. */ | |
1111 | cp->fd = i; | |
1112 | /* Wake up the reader thread for this process */ | |
1113 | cp->status = STATUS_READ_READY; | |
1114 | if (!SetEvent (cp->char_consumed)) | |
1115 | DebPrint (("nt_select.SetEvent failed with " | |
1116 | "%lu for fd %ld\n", GetLastError (), i)); | |
1117 | } | |
1118 | ||
1119 | #ifdef CHECK_INTERLOCK | |
1120 | /* slightly crude cross-checking of interlock between threads */ | |
1121 | ||
1122 | current_status = cp->status; | |
1123 | if (WaitForSingleObject (cp->char_avail, 0) == WAIT_OBJECT_0) | |
1124 | { | |
1125 | /* char_avail has been signalled, so status (which may | |
1126 | have changed) should indicate read has completed | |
1127 | but has not been acknowledged. */ | |
1128 | current_status = cp->status; | |
b2fc9f3d GV |
1129 | if (current_status != STATUS_READ_SUCCEEDED |
1130 | && current_status != STATUS_READ_FAILED) | |
c519b5e1 GV |
1131 | DebPrint (("char_avail set, but read not completed: status %d\n", |
1132 | current_status)); | |
1133 | } | |
1134 | else | |
1135 | { | |
1136 | /* char_avail has not been signalled, so status should | |
1137 | indicate that read is in progress; small possibility | |
1138 | that read has completed but event wasn't yet signalled | |
1139 | when we tested it (because a context switch occurred | |
1140 | or if running on separate CPUs). */ | |
b2fc9f3d GV |
1141 | if (current_status != STATUS_READ_READY |
1142 | && current_status != STATUS_READ_IN_PROGRESS | |
1143 | && current_status != STATUS_READ_SUCCEEDED | |
1144 | && current_status != STATUS_READ_FAILED) | |
c519b5e1 GV |
1145 | DebPrint (("char_avail reset, but read status is bad: %d\n", |
1146 | current_status)); | |
1147 | } | |
1148 | #endif | |
1149 | wait_hnd[nh] = cp->char_avail; | |
1150 | fdindex[nh] = i; | |
1151 | if (!wait_hnd[nh]) abort (); | |
1152 | nh++; | |
6cdfb6e6 RS |
1153 | #ifdef FULL_DEBUG |
1154 | DebPrint (("select waiting on child %d fd %d\n", | |
1155 | cp-child_procs, i)); | |
1156 | #endif | |
6cdfb6e6 RS |
1157 | } |
1158 | else | |
1159 | { | |
c519b5e1 | 1160 | /* Unable to find something to wait on for this fd, skip */ |
ef79fbba GV |
1161 | |
1162 | /* Note that this is not a fatal error, and can in fact | |
1163 | happen in unusual circumstances. Specifically, if | |
1164 | sys_spawnve fails, eg. because the program doesn't | |
1165 | exist, and debug-on-error is t so Fsignal invokes a | |
1166 | nested input loop, then the process output pipe is | |
1167 | still included in input_wait_mask with no child_proc | |
1168 | associated with it. (It is removed when the debugger | |
1169 | exits the nested input loop and the error is thrown.) */ | |
1170 | ||
c519b5e1 | 1171 | DebPrint (("sys_select: fd %ld is invalid! ignoring\n", i)); |
6cdfb6e6 RS |
1172 | } |
1173 | } | |
1174 | } | |
b2fc9f3d GV |
1175 | |
1176 | count_children: | |
1177 | /* Add handles of child processes. */ | |
1178 | nc = 0; | |
1179 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) | |
ef79fbba GV |
1180 | /* Some child_procs might be sockets; ignore them. Also some |
1181 | children may have died already, but we haven't finished reading | |
1182 | the process output; ignore them too. */ | |
1183 | if (CHILD_ACTIVE (cp) && cp->procinfo.hProcess | |
1184 | && (cp->fd < 0 | |
1185 | || (fd_info[cp->fd].flags & FILE_SEND_SIGCHLD) == 0 | |
1186 | || (fd_info[cp->fd].flags & FILE_AT_EOF) != 0) | |
1187 | ) | |
b2fc9f3d GV |
1188 | { |
1189 | wait_hnd[nh + nc] = cp->procinfo.hProcess; | |
1190 | cps[nc] = cp; | |
1191 | nc++; | |
1192 | } | |
6cdfb6e6 RS |
1193 | |
1194 | /* Nothing to look for, so we didn't find anything */ | |
b2fc9f3d | 1195 | if (nh + nc == 0) |
6cdfb6e6 | 1196 | { |
22759c72 | 1197 | if (timeout) |
b2fc9f3d | 1198 | Sleep (timeout_ms); |
6cdfb6e6 RS |
1199 | return 0; |
1200 | } | |
6cdfb6e6 | 1201 | |
b2fc9f3d | 1202 | start_time = GetTickCount (); |
8b031dcc AI |
1203 | |
1204 | /* Wait for input or child death to be signalled. If user input is | |
1205 | allowed, then also accept window messages. */ | |
1206 | if (FD_ISSET (0, &orfds)) | |
1207 | active = MsgWaitForMultipleObjects (nh + nc, wait_hnd, FALSE, timeout_ms, | |
1208 | QS_ALLINPUT); | |
1209 | else | |
1210 | active = WaitForMultipleObjects (nh + nc, wait_hnd, FALSE, timeout_ms); | |
c519b5e1 | 1211 | |
6cdfb6e6 RS |
1212 | if (active == WAIT_FAILED) |
1213 | { | |
1214 | DebPrint (("select.WaitForMultipleObjects (%d, %lu) failed with %lu\n", | |
b2fc9f3d | 1215 | nh + nc, timeout_ms, GetLastError ())); |
c519b5e1 GV |
1216 | /* don't return EBADF - this causes wait_reading_process_input to |
1217 | abort; WAIT_FAILED is returned when single-stepping under | |
1218 | Windows 95 after switching thread focus in debugger, and | |
1219 | possibly at other times. */ | |
1220 | errno = EINTR; | |
6cdfb6e6 RS |
1221 | return -1; |
1222 | } | |
1223 | else if (active == WAIT_TIMEOUT) | |
1224 | { | |
1225 | return 0; | |
1226 | } | |
b2fc9f3d GV |
1227 | else if (active >= WAIT_OBJECT_0 |
1228 | && active < WAIT_OBJECT_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
1229 | { |
1230 | active -= WAIT_OBJECT_0; | |
1231 | } | |
b2fc9f3d GV |
1232 | else if (active >= WAIT_ABANDONED_0 |
1233 | && active < WAIT_ABANDONED_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
1234 | { |
1235 | active -= WAIT_ABANDONED_0; | |
1236 | } | |
b2fc9f3d GV |
1237 | else |
1238 | abort (); | |
6cdfb6e6 | 1239 | |
c519b5e1 GV |
1240 | /* Loop over all handles after active (now officially documented as |
1241 | being the first signalled handle in the array). We do this to | |
1242 | ensure fairness, so that all channels with data available will be | |
1243 | processed - otherwise higher numbered channels could be starved. */ | |
1244 | do | |
6cdfb6e6 | 1245 | { |
8b031dcc AI |
1246 | if (active == nh + nc) |
1247 | { | |
1248 | /* There are messages in the lisp thread's queue; we must | |
1249 | drain the queue now to ensure they are processed promptly, | |
1250 | because if we don't do so, we will not be woken again until | |
1251 | further messages arrive. | |
1252 | ||
1253 | NB. If ever we allow window message procedures to callback | |
1254 | into lisp, we will need to ensure messages are dispatched | |
1255 | at a safe time for lisp code to be run (*), and we may also | |
1256 | want to provide some hooks in the dispatch loop to cater | |
1257 | for modeless dialogs created by lisp (ie. to register | |
1258 | window handles to pass to IsDialogMessage). | |
1259 | ||
1260 | (*) Note that MsgWaitForMultipleObjects above is an | |
1261 | internal dispatch point for messages that are sent to | |
1262 | windows created by this thread. */ | |
1263 | drain_message_queue (); | |
1264 | } | |
1265 | else if (active >= nh) | |
b2fc9f3d GV |
1266 | { |
1267 | cp = cps[active - nh]; | |
ef79fbba GV |
1268 | |
1269 | /* We cannot always signal SIGCHLD immediately; if we have not | |
1270 | finished reading the process output, we must delay sending | |
1271 | SIGCHLD until we do. */ | |
1272 | ||
1273 | if (cp->fd >= 0 && (fd_info[cp->fd].flags & FILE_AT_EOF) == 0) | |
1274 | fd_info[cp->fd].flags |= FILE_SEND_SIGCHLD; | |
b2fc9f3d | 1275 | /* SIG_DFL for SIGCHLD is ignore */ |
ef79fbba GV |
1276 | else if (sig_handlers[SIGCHLD] != SIG_DFL && |
1277 | sig_handlers[SIGCHLD] != SIG_IGN) | |
b2fc9f3d GV |
1278 | { |
1279 | #ifdef FULL_DEBUG | |
1280 | DebPrint (("select calling SIGCHLD handler for pid %d\n", | |
1281 | cp->pid)); | |
1282 | #endif | |
1283 | dead_child = cp; | |
1284 | sig_handlers[SIGCHLD] (SIGCHLD); | |
1285 | dead_child = NULL; | |
1286 | } | |
1287 | } | |
86143765 RS |
1288 | else if (fdindex[active] == -1) |
1289 | { | |
1290 | /* Quit (C-g) was detected. */ | |
1291 | errno = EINTR; | |
1292 | return -1; | |
1293 | } | |
b2fc9f3d | 1294 | else if (fdindex[active] == 0) |
c519b5e1 GV |
1295 | { |
1296 | /* Keyboard input available */ | |
1297 | FD_SET (0, rfds); | |
6cdfb6e6 | 1298 | nr++; |
c519b5e1 | 1299 | } |
6cdfb6e6 | 1300 | else |
c519b5e1 | 1301 | { |
b2fc9f3d GV |
1302 | /* must be a socket or pipe - read ahead should have |
1303 | completed, either succeeding or failing. */ | |
c519b5e1 GV |
1304 | FD_SET (fdindex[active], rfds); |
1305 | nr++; | |
c519b5e1 GV |
1306 | } |
1307 | ||
b2fc9f3d GV |
1308 | /* Even though wait_reading_process_output only reads from at most |
1309 | one channel, we must process all channels here so that we reap | |
1310 | all children that have died. */ | |
1311 | while (++active < nh + nc) | |
c519b5e1 GV |
1312 | if (WaitForSingleObject (wait_hnd[active], 0) == WAIT_OBJECT_0) |
1313 | break; | |
b2fc9f3d GV |
1314 | } while (active < nh + nc); |
1315 | ||
1316 | /* If no input has arrived and timeout hasn't expired, wait again. */ | |
1317 | if (nr == 0) | |
1318 | { | |
1319 | DWORD elapsed = GetTickCount () - start_time; | |
1320 | ||
1321 | if (timeout_ms > elapsed) /* INFINITE is MAX_UINT */ | |
1322 | { | |
1323 | if (timeout_ms != INFINITE) | |
1324 | timeout_ms -= elapsed; | |
1325 | goto count_children; | |
1326 | } | |
1327 | } | |
c519b5e1 | 1328 | |
6cdfb6e6 RS |
1329 | return nr; |
1330 | } | |
1331 | ||
c519b5e1 | 1332 | /* Substitute for certain kill () operations */ |
b2fc9f3d GV |
1333 | |
1334 | static BOOL CALLBACK | |
42c95ffb | 1335 | find_child_console (HWND hwnd, LPARAM arg) |
b2fc9f3d | 1336 | { |
42c95ffb | 1337 | child_process * cp = (child_process *) arg; |
b2fc9f3d GV |
1338 | DWORD thread_id; |
1339 | DWORD process_id; | |
1340 | ||
1341 | thread_id = GetWindowThreadProcessId (hwnd, &process_id); | |
1342 | if (process_id == cp->procinfo.dwProcessId) | |
1343 | { | |
1344 | char window_class[32]; | |
1345 | ||
1346 | GetClassName (hwnd, window_class, sizeof (window_class)); | |
1347 | if (strcmp (window_class, | |
1348 | (os_subtype == OS_WIN95) | |
1349 | ? "tty" | |
1350 | : "ConsoleWindowClass") == 0) | |
1351 | { | |
1352 | cp->hwnd = hwnd; | |
1353 | return FALSE; | |
1354 | } | |
1355 | } | |
1356 | /* keep looking */ | |
1357 | return TRUE; | |
1358 | } | |
1359 | ||
6cdfb6e6 | 1360 | int |
c519b5e1 | 1361 | sys_kill (int pid, int sig) |
6cdfb6e6 RS |
1362 | { |
1363 | child_process *cp; | |
c519b5e1 GV |
1364 | HANDLE proc_hand; |
1365 | int need_to_free = 0; | |
1366 | int rc = 0; | |
6cdfb6e6 RS |
1367 | |
1368 | /* Only handle signals that will result in the process dying */ | |
1369 | if (sig != SIGINT && sig != SIGKILL && sig != SIGQUIT && sig != SIGHUP) | |
1370 | { | |
1371 | errno = EINVAL; | |
1372 | return -1; | |
1373 | } | |
c519b5e1 | 1374 | |
6cdfb6e6 RS |
1375 | cp = find_child_pid (pid); |
1376 | if (cp == NULL) | |
1377 | { | |
c519b5e1 GV |
1378 | proc_hand = OpenProcess (PROCESS_TERMINATE, 0, pid); |
1379 | if (proc_hand == NULL) | |
1380 | { | |
1381 | errno = EPERM; | |
1382 | return -1; | |
1383 | } | |
1384 | need_to_free = 1; | |
1385 | } | |
1386 | else | |
1387 | { | |
1388 | proc_hand = cp->procinfo.hProcess; | |
1389 | pid = cp->procinfo.dwProcessId; | |
b2fc9f3d GV |
1390 | |
1391 | /* Try to locate console window for process. */ | |
1392 | EnumWindows (find_child_console, (LPARAM) cp); | |
6cdfb6e6 RS |
1393 | } |
1394 | ||
a55a5f3c | 1395 | if (sig == SIGINT || sig == SIGQUIT) |
6cdfb6e6 | 1396 | { |
b2fc9f3d GV |
1397 | if (NILP (Vw32_start_process_share_console) && cp && cp->hwnd) |
1398 | { | |
1399 | BYTE control_scan_code = (BYTE) MapVirtualKey (VK_CONTROL, 0); | |
a55a5f3c AI |
1400 | /* Fake Ctrl-C for SIGINT, and Ctrl-Break for SIGQUIT. */ |
1401 | BYTE vk_break_code = (sig == SIGINT) ? 'C' : VK_CANCEL; | |
b2fc9f3d GV |
1402 | BYTE break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0); |
1403 | HWND foreground_window; | |
1404 | ||
1405 | if (break_scan_code == 0) | |
1406 | { | |
a55a5f3c | 1407 | /* Fake Ctrl-C for SIGQUIT if we can't manage Ctrl-Break. */ |
b2fc9f3d GV |
1408 | vk_break_code = 'C'; |
1409 | break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0); | |
1410 | } | |
1411 | ||
1412 | foreground_window = GetForegroundWindow (); | |
f446016f | 1413 | if (foreground_window) |
b2fc9f3d | 1414 | { |
f446016f AI |
1415 | /* NT 5.0, and apparently also Windows 98, will not allow |
1416 | a Window to be set to foreground directly without the | |
1417 | user's involvement. The workaround is to attach | |
1418 | ourselves to the thread that owns the foreground | |
1419 | window, since that is the only thread that can set the | |
1420 | foreground window. */ | |
1421 | DWORD foreground_thread, child_thread; | |
1422 | foreground_thread = | |
1423 | GetWindowThreadProcessId (foreground_window, NULL); | |
1424 | if (foreground_thread == GetCurrentThreadId () | |
1425 | || !AttachThreadInput (GetCurrentThreadId (), | |
1426 | foreground_thread, TRUE)) | |
1427 | foreground_thread = 0; | |
1428 | ||
1429 | child_thread = GetWindowThreadProcessId (cp->hwnd, NULL); | |
1430 | if (child_thread == GetCurrentThreadId () | |
1431 | || !AttachThreadInput (GetCurrentThreadId (), | |
1432 | child_thread, TRUE)) | |
1433 | child_thread = 0; | |
1434 | ||
1435 | /* Set the foreground window to the child. */ | |
1436 | if (SetForegroundWindow (cp->hwnd)) | |
1437 | { | |
1438 | /* Generate keystrokes as if user had typed Ctrl-Break or | |
1439 | Ctrl-C. */ | |
1440 | keybd_event (VK_CONTROL, control_scan_code, 0, 0); | |
1441 | keybd_event (vk_break_code, break_scan_code, | |
1442 | (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY), 0); | |
1443 | keybd_event (vk_break_code, break_scan_code, | |
1444 | (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY) | |
1445 | | KEYEVENTF_KEYUP, 0); | |
1446 | keybd_event (VK_CONTROL, control_scan_code, | |
1447 | KEYEVENTF_KEYUP, 0); | |
1448 | ||
1449 | /* Sleep for a bit to give time for Emacs frame to respond | |
1450 | to focus change events (if Emacs was active app). */ | |
1451 | Sleep (100); | |
1452 | ||
1453 | SetForegroundWindow (foreground_window); | |
1454 | } | |
1455 | /* Detach from the foreground and child threads now that | |
1456 | the foreground switching is over. */ | |
1457 | if (foreground_thread) | |
1458 | AttachThreadInput (GetCurrentThreadId (), | |
1459 | foreground_thread, FALSE); | |
1460 | if (child_thread) | |
1461 | AttachThreadInput (GetCurrentThreadId (), | |
1462 | child_thread, FALSE); | |
1463 | } | |
1464 | } | |
c519b5e1 | 1465 | /* Ctrl-Break is NT equivalent of SIGINT. */ |
b2fc9f3d | 1466 | else if (!GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, pid)) |
6cdfb6e6 | 1467 | { |
c519b5e1 | 1468 | DebPrint (("sys_kill.GenerateConsoleCtrlEvent return %d " |
6cdfb6e6 RS |
1469 | "for pid %lu\n", GetLastError (), pid)); |
1470 | errno = EINVAL; | |
c519b5e1 | 1471 | rc = -1; |
80874ef7 | 1472 | } |
6cdfb6e6 RS |
1473 | } |
1474 | else | |
1475 | { | |
b2fc9f3d GV |
1476 | if (NILP (Vw32_start_process_share_console) && cp && cp->hwnd) |
1477 | { | |
1478 | #if 1 | |
1479 | if (os_subtype == OS_WIN95) | |
1480 | { | |
1481 | /* | |
1482 | Another possibility is to try terminating the VDM out-right by | |
1483 | calling the Shell VxD (id 0x17) V86 interface, function #4 | |
1484 | "SHELL_Destroy_VM", ie. | |
1485 | ||
1486 | mov edx,4 | |
1487 | mov ebx,vm_handle | |
1488 | call shellapi | |
1489 | ||
1490 | First need to determine the current VM handle, and then arrange for | |
1491 | the shellapi call to be made from the system vm (by using | |
1492 | Switch_VM_and_callback). | |
1493 | ||
1494 | Could try to invoke DestroyVM through CallVxD. | |
1495 | ||
1496 | */ | |
ef79fbba GV |
1497 | #if 0 |
1498 | /* On Win95, posting WM_QUIT causes the 16-bit subsystem | |
1499 | to hang when cmdproxy is used in conjunction with | |
1500 | command.com for an interactive shell. Posting | |
1501 | WM_CLOSE pops up a dialog that, when Yes is selected, | |
1502 | does the same thing. TerminateProcess is also less | |
1503 | than ideal in that subprocesses tend to stick around | |
1504 | until the machine is shutdown, but at least it | |
1505 | doesn't freeze the 16-bit subsystem. */ | |
b2fc9f3d | 1506 | PostMessage (cp->hwnd, WM_QUIT, 0xff, 0); |
ef79fbba GV |
1507 | #endif |
1508 | if (!TerminateProcess (proc_hand, 0xff)) | |
1509 | { | |
1510 | DebPrint (("sys_kill.TerminateProcess returned %d " | |
1511 | "for pid %lu\n", GetLastError (), pid)); | |
1512 | errno = EINVAL; | |
1513 | rc = -1; | |
1514 | } | |
b2fc9f3d GV |
1515 | } |
1516 | else | |
1517 | #endif | |
1518 | PostMessage (cp->hwnd, WM_CLOSE, 0, 0); | |
1519 | } | |
fbd6baed | 1520 | /* Kill the process. On W32 this doesn't kill child processes |
8eae7766 | 1521 | so it doesn't work very well for shells which is why it's not |
b2fc9f3d GV |
1522 | used in every case. */ |
1523 | else if (!TerminateProcess (proc_hand, 0xff)) | |
6cdfb6e6 | 1524 | { |
c519b5e1 | 1525 | DebPrint (("sys_kill.TerminateProcess returned %d " |
6cdfb6e6 RS |
1526 | "for pid %lu\n", GetLastError (), pid)); |
1527 | errno = EINVAL; | |
c519b5e1 | 1528 | rc = -1; |
6cdfb6e6 RS |
1529 | } |
1530 | } | |
c519b5e1 GV |
1531 | |
1532 | if (need_to_free) | |
1533 | CloseHandle (proc_hand); | |
1534 | ||
1535 | return rc; | |
6cdfb6e6 RS |
1536 | } |
1537 | ||
09522567 | 1538 | /* extern int report_file_error (char *, Lisp_Object); */ |
c519b5e1 GV |
1539 | |
1540 | /* The following two routines are used to manipulate stdin, stdout, and | |
1541 | stderr of our child processes. | |
1542 | ||
1543 | Assuming that in, out, and err are *not* inheritable, we make them | |
1544 | stdin, stdout, and stderr of the child as follows: | |
1545 | ||
1546 | - Save the parent's current standard handles. | |
1547 | - Set the std handles to inheritable duplicates of the ones being passed in. | |
1548 | (Note that _get_osfhandle() is an io.h procedure that retrieves the | |
1549 | NT file handle for a crt file descriptor.) | |
1550 | - Spawn the child, which inherits in, out, and err as stdin, | |
1551 | stdout, and stderr. (see Spawnve) | |
1552 | - Close the std handles passed to the child. | |
1553 | - Reset the parent's standard handles to the saved handles. | |
1554 | (see reset_standard_handles) | |
1555 | We assume that the caller closes in, out, and err after calling us. */ | |
1556 | ||
1557 | void | |
1558 | prepare_standard_handles (int in, int out, int err, HANDLE handles[3]) | |
6cdfb6e6 | 1559 | { |
c519b5e1 GV |
1560 | HANDLE parent; |
1561 | HANDLE newstdin, newstdout, newstderr; | |
1562 | ||
1563 | parent = GetCurrentProcess (); | |
1564 | ||
1565 | handles[0] = GetStdHandle (STD_INPUT_HANDLE); | |
1566 | handles[1] = GetStdHandle (STD_OUTPUT_HANDLE); | |
1567 | handles[2] = GetStdHandle (STD_ERROR_HANDLE); | |
1568 | ||
1569 | /* make inheritable copies of the new handles */ | |
1570 | if (!DuplicateHandle (parent, | |
1571 | (HANDLE) _get_osfhandle (in), | |
1572 | parent, | |
1573 | &newstdin, | |
1574 | 0, | |
1575 | TRUE, | |
1576 | DUPLICATE_SAME_ACCESS)) | |
1577 | report_file_error ("Duplicating input handle for child", Qnil); | |
6cdfb6e6 | 1578 | |
c519b5e1 GV |
1579 | if (!DuplicateHandle (parent, |
1580 | (HANDLE) _get_osfhandle (out), | |
1581 | parent, | |
1582 | &newstdout, | |
1583 | 0, | |
1584 | TRUE, | |
1585 | DUPLICATE_SAME_ACCESS)) | |
1586 | report_file_error ("Duplicating output handle for child", Qnil); | |
6cdfb6e6 | 1587 | |
c519b5e1 GV |
1588 | if (!DuplicateHandle (parent, |
1589 | (HANDLE) _get_osfhandle (err), | |
1590 | parent, | |
1591 | &newstderr, | |
1592 | 0, | |
1593 | TRUE, | |
1594 | DUPLICATE_SAME_ACCESS)) | |
1595 | report_file_error ("Duplicating error handle for child", Qnil); | |
1596 | ||
1597 | /* and store them as our std handles */ | |
1598 | if (!SetStdHandle (STD_INPUT_HANDLE, newstdin)) | |
1599 | report_file_error ("Changing stdin handle", Qnil); | |
6cdfb6e6 | 1600 | |
c519b5e1 GV |
1601 | if (!SetStdHandle (STD_OUTPUT_HANDLE, newstdout)) |
1602 | report_file_error ("Changing stdout handle", Qnil); | |
1603 | ||
1604 | if (!SetStdHandle (STD_ERROR_HANDLE, newstderr)) | |
1605 | report_file_error ("Changing stderr handle", Qnil); | |
1606 | } | |
1607 | ||
1608 | void | |
1609 | reset_standard_handles (int in, int out, int err, HANDLE handles[3]) | |
1610 | { | |
1611 | /* close the duplicated handles passed to the child */ | |
1612 | CloseHandle (GetStdHandle (STD_INPUT_HANDLE)); | |
1613 | CloseHandle (GetStdHandle (STD_OUTPUT_HANDLE)); | |
1614 | CloseHandle (GetStdHandle (STD_ERROR_HANDLE)); | |
1615 | ||
1616 | /* now restore parent's saved std handles */ | |
1617 | SetStdHandle (STD_INPUT_HANDLE, handles[0]); | |
1618 | SetStdHandle (STD_OUTPUT_HANDLE, handles[1]); | |
1619 | SetStdHandle (STD_ERROR_HANDLE, handles[2]); | |
6cdfb6e6 | 1620 | } |
c519b5e1 | 1621 | |
b2fc9f3d GV |
1622 | void |
1623 | set_process_dir (char * dir) | |
1624 | { | |
1625 | process_dir = dir; | |
1626 | } | |
1627 | ||
a11e68d0 RS |
1628 | #ifdef HAVE_SOCKETS |
1629 | ||
1630 | /* To avoid problems with winsock implementations that work over dial-up | |
1631 | connections causing or requiring a connection to exist while Emacs is | |
1632 | running, Emacs no longer automatically loads winsock on startup if it | |
1633 | is present. Instead, it will be loaded when open-network-stream is | |
1634 | first called. | |
1635 | ||
1636 | To allow full control over when winsock is loaded, we provide these | |
1637 | two functions to dynamically load and unload winsock. This allows | |
1638 | dial-up users to only be connected when they actually need to use | |
1639 | socket services. */ | |
1640 | ||
1641 | /* From nt.c */ | |
1642 | extern HANDLE winsock_lib; | |
1643 | extern BOOL term_winsock (void); | |
1644 | extern BOOL init_winsock (int load_now); | |
1645 | ||
1646 | extern Lisp_Object Vsystem_name; | |
1647 | ||
fbd6baed | 1648 | DEFUN ("w32-has-winsock", Fw32_has_winsock, Sw32_has_winsock, 0, 1, 0, |
a11e68d0 RS |
1649 | "Test for presence of the Windows socket library `winsock'.\n\ |
1650 | Returns non-nil if winsock support is present, nil otherwise.\n\ | |
1651 | \n\ | |
1652 | If the optional argument LOAD-NOW is non-nil, the winsock library is\n\ | |
1653 | also loaded immediately if not already loaded. If winsock is loaded,\n\ | |
1654 | the winsock local hostname is returned (since this may be different from\n\ | |
1655 | the value of `system-name' and should supplant it), otherwise t is\n\ | |
1656 | returned to indicate winsock support is present.") | |
1657 | (load_now) | |
1658 | Lisp_Object load_now; | |
1659 | { | |
1660 | int have_winsock; | |
1661 | ||
1662 | have_winsock = init_winsock (!NILP (load_now)); | |
1663 | if (have_winsock) | |
1664 | { | |
1665 | if (winsock_lib != NULL) | |
1666 | { | |
1667 | /* Return new value for system-name. The best way to do this | |
1668 | is to call init_system_name, saving and restoring the | |
1669 | original value to avoid side-effects. */ | |
1670 | Lisp_Object orig_hostname = Vsystem_name; | |
1671 | Lisp_Object hostname; | |
1672 | ||
1673 | init_system_name (); | |
1674 | hostname = Vsystem_name; | |
1675 | Vsystem_name = orig_hostname; | |
1676 | return hostname; | |
1677 | } | |
1678 | return Qt; | |
1679 | } | |
1680 | return Qnil; | |
1681 | } | |
1682 | ||
fbd6baed | 1683 | DEFUN ("w32-unload-winsock", Fw32_unload_winsock, Sw32_unload_winsock, |
a11e68d0 RS |
1684 | 0, 0, 0, |
1685 | "Unload the Windows socket library `winsock' if loaded.\n\ | |
1686 | This is provided to allow dial-up socket connections to be disconnected\n\ | |
1687 | when no longer needed. Returns nil without unloading winsock if any\n\ | |
1688 | socket connections still exist.") | |
1689 | () | |
1690 | { | |
1691 | return term_winsock () ? Qt : Qnil; | |
1692 | } | |
1693 | ||
1694 | #endif /* HAVE_SOCKETS */ | |
1695 | ||
93fdf2f8 | 1696 | \f |
b2fc9f3d GV |
1697 | /* Some miscellaneous functions that are Windows specific, but not GUI |
1698 | specific (ie. are applicable in terminal or batch mode as well). */ | |
1699 | ||
1700 | /* lifted from fileio.c */ | |
1701 | #define CORRECT_DIR_SEPS(s) \ | |
1702 | do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \ | |
1703 | else unixtodos_filename (s); \ | |
1704 | } while (0) | |
1705 | ||
1706 | DEFUN ("w32-short-file-name", Fw32_short_file_name, Sw32_short_file_name, 1, 1, 0, | |
1707 | "Return the short file name version (8.3) of the full path of FILENAME.\n\ | |
1708 | If FILENAME does not exist, return nil.\n\ | |
1709 | All path elements in FILENAME are converted to their short names.") | |
1710 | (filename) | |
1711 | Lisp_Object filename; | |
1712 | { | |
1713 | char shortname[MAX_PATH]; | |
1714 | ||
b7826503 | 1715 | CHECK_STRING (filename); |
b2fc9f3d GV |
1716 | |
1717 | /* first expand it. */ | |
1718 | filename = Fexpand_file_name (filename, Qnil); | |
1719 | ||
1720 | /* luckily, this returns the short version of each element in the path. */ | |
1721 | if (GetShortPathName (XSTRING (filename)->data, shortname, MAX_PATH) == 0) | |
1722 | return Qnil; | |
1723 | ||
1724 | CORRECT_DIR_SEPS (shortname); | |
1725 | ||
1726 | return build_string (shortname); | |
1727 | } | |
1728 | ||
1729 | ||
1730 | DEFUN ("w32-long-file-name", Fw32_long_file_name, Sw32_long_file_name, | |
1731 | 1, 1, 0, | |
1732 | "Return the long file name version of the full path of FILENAME.\n\ | |
1733 | If FILENAME does not exist, return nil.\n\ | |
1734 | All path elements in FILENAME are converted to their long names.") | |
1735 | (filename) | |
1736 | Lisp_Object filename; | |
1737 | { | |
1738 | char longname[ MAX_PATH ]; | |
1739 | ||
b7826503 | 1740 | CHECK_STRING (filename); |
b2fc9f3d GV |
1741 | |
1742 | /* first expand it. */ | |
1743 | filename = Fexpand_file_name (filename, Qnil); | |
1744 | ||
1745 | if (!w32_get_long_filename (XSTRING (filename)->data, longname, MAX_PATH)) | |
1746 | return Qnil; | |
1747 | ||
1748 | CORRECT_DIR_SEPS (longname); | |
1749 | ||
1750 | return build_string (longname); | |
1751 | } | |
1752 | ||
1753 | DEFUN ("w32-set-process-priority", Fw32_set_process_priority, Sw32_set_process_priority, | |
1754 | 2, 2, 0, | |
1755 | "Set the priority of PROCESS to PRIORITY.\n\ | |
1756 | If PROCESS is nil, the priority of Emacs is changed, otherwise the\n\ | |
1757 | priority of the process whose pid is PROCESS is changed.\n\ | |
1758 | PRIORITY should be one of the symbols high, normal, or low;\n\ | |
1759 | any other symbol will be interpreted as normal.\n\ | |
1760 | \n\ | |
1761 | If successful, the return value is t, otherwise nil.") | |
1762 | (process, priority) | |
1763 | Lisp_Object process, priority; | |
1764 | { | |
1765 | HANDLE proc_handle = GetCurrentProcess (); | |
1766 | DWORD priority_class = NORMAL_PRIORITY_CLASS; | |
1767 | Lisp_Object result = Qnil; | |
1768 | ||
b7826503 | 1769 | CHECK_SYMBOL (priority); |
b2fc9f3d GV |
1770 | |
1771 | if (!NILP (process)) | |
1772 | { | |
1773 | DWORD pid; | |
1774 | child_process *cp; | |
1775 | ||
b7826503 | 1776 | CHECK_NUMBER (process); |
b2fc9f3d GV |
1777 | |
1778 | /* Allow pid to be an internally generated one, or one obtained | |
1779 | externally. This is necessary because real pids on Win95 are | |
1780 | negative. */ | |
1781 | ||
1782 | pid = XINT (process); | |
1783 | cp = find_child_pid (pid); | |
1784 | if (cp != NULL) | |
1785 | pid = cp->procinfo.dwProcessId; | |
1786 | ||
1787 | proc_handle = OpenProcess (PROCESS_SET_INFORMATION, FALSE, pid); | |
1788 | } | |
1789 | ||
1790 | if (EQ (priority, Qhigh)) | |
1791 | priority_class = HIGH_PRIORITY_CLASS; | |
1792 | else if (EQ (priority, Qlow)) | |
1793 | priority_class = IDLE_PRIORITY_CLASS; | |
1794 | ||
1795 | if (proc_handle != NULL) | |
1796 | { | |
1797 | if (SetPriorityClass (proc_handle, priority_class)) | |
1798 | result = Qt; | |
1799 | if (!NILP (process)) | |
1800 | CloseHandle (proc_handle); | |
1801 | } | |
1802 | ||
1803 | return result; | |
1804 | } | |
1805 | ||
1806 | ||
1807 | DEFUN ("w32-get-locale-info", Fw32_get_locale_info, Sw32_get_locale_info, 1, 2, 0, | |
1808 | "Return information about the Windows locale LCID.\n\ | |
1809 | By default, return a three letter locale code which encodes the default\n\ | |
1810 | language as the first two characters, and the country or regionial variant\n\ | |
1811 | as the third letter. For example, ENU refers to `English (United States)',\n\ | |
1812 | while ENC means `English (Canadian)'.\n\ | |
1813 | \n\ | |
0eaf5926 GV |
1814 | If the optional argument LONGFORM is t, the long form of the locale\n\ |
1815 | name is returned, e.g. `English (United States)' instead; if LONGFORM\n\ | |
1816 | is a number, it is interpreted as an LCTYPE constant and the corresponding\n\ | |
1817 | locale information is returned.\n\ | |
b2fc9f3d GV |
1818 | \n\ |
1819 | If LCID (a 16-bit number) is not a valid locale, the result is nil.") | |
1820 | (lcid, longform) | |
1821 | Lisp_Object lcid, longform; | |
1822 | { | |
1823 | int got_abbrev; | |
1824 | int got_full; | |
1825 | char abbrev_name[32] = { 0 }; | |
1826 | char full_name[256] = { 0 }; | |
1827 | ||
b7826503 | 1828 | CHECK_NUMBER (lcid); |
b2fc9f3d GV |
1829 | |
1830 | if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED)) | |
1831 | return Qnil; | |
1832 | ||
1833 | if (NILP (longform)) | |
1834 | { | |
1835 | got_abbrev = GetLocaleInfo (XINT (lcid), | |
1836 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
1837 | abbrev_name, sizeof (abbrev_name)); | |
1838 | if (got_abbrev) | |
1839 | return build_string (abbrev_name); | |
1840 | } | |
0eaf5926 | 1841 | else if (EQ (longform, Qt)) |
b2fc9f3d GV |
1842 | { |
1843 | got_full = GetLocaleInfo (XINT (lcid), | |
1844 | LOCALE_SLANGUAGE | LOCALE_USE_CP_ACP, | |
1845 | full_name, sizeof (full_name)); | |
1846 | if (got_full) | |
1847 | return build_string (full_name); | |
1848 | } | |
0eaf5926 GV |
1849 | else if (NUMBERP (longform)) |
1850 | { | |
1851 | got_full = GetLocaleInfo (XINT (lcid), | |
1852 | XINT (longform), | |
1853 | full_name, sizeof (full_name)); | |
1854 | if (got_full) | |
1855 | return make_unibyte_string (full_name, got_full); | |
1856 | } | |
b2fc9f3d GV |
1857 | |
1858 | return Qnil; | |
1859 | } | |
1860 | ||
1861 | ||
1862 | DEFUN ("w32-get-current-locale-id", Fw32_get_current_locale_id, Sw32_get_current_locale_id, 0, 0, 0, | |
1863 | "Return Windows locale id for current locale setting.\n\ | |
1864 | This is a numerical value; use `w32-get-locale-info' to convert to a\n\ | |
1865 | human-readable form.") | |
1866 | () | |
1867 | { | |
1868 | return make_number (GetThreadLocale ()); | |
1869 | } | |
1870 | ||
ef79fbba GV |
1871 | DWORD int_from_hex (char * s) |
1872 | { | |
1873 | DWORD val = 0; | |
1874 | static char hex[] = "0123456789abcdefABCDEF"; | |
1875 | char * p; | |
1876 | ||
1877 | while (*s && (p = strchr(hex, *s)) != NULL) | |
1878 | { | |
1879 | unsigned digit = p - hex; | |
1880 | if (digit > 15) | |
1881 | digit -= 6; | |
1882 | val = val * 16 + digit; | |
1883 | s++; | |
1884 | } | |
1885 | return val; | |
1886 | } | |
1887 | ||
1888 | /* We need to build a global list, since the EnumSystemLocale callback | |
1889 | function isn't given a context pointer. */ | |
1890 | Lisp_Object Vw32_valid_locale_ids; | |
1891 | ||
1892 | BOOL CALLBACK enum_locale_fn (LPTSTR localeNum) | |
1893 | { | |
1894 | DWORD id = int_from_hex (localeNum); | |
1895 | Vw32_valid_locale_ids = Fcons (make_number (id), Vw32_valid_locale_ids); | |
1896 | return TRUE; | |
1897 | } | |
1898 | ||
1899 | DEFUN ("w32-get-valid-locale-ids", Fw32_get_valid_locale_ids, Sw32_get_valid_locale_ids, 0, 0, 0, | |
1900 | "Return list of all valid Windows locale ids.\n\ | |
1901 | Each id is a numerical value; use `w32-get-locale-info' to convert to a\n\ | |
1902 | human-readable form.") | |
1903 | () | |
1904 | { | |
1905 | Vw32_valid_locale_ids = Qnil; | |
1906 | ||
1907 | EnumSystemLocales (enum_locale_fn, LCID_SUPPORTED); | |
1908 | ||
1909 | Vw32_valid_locale_ids = Fnreverse (Vw32_valid_locale_ids); | |
1910 | return Vw32_valid_locale_ids; | |
1911 | } | |
1912 | ||
b2fc9f3d GV |
1913 | |
1914 | DEFUN ("w32-get-default-locale-id", Fw32_get_default_locale_id, Sw32_get_default_locale_id, 0, 1, 0, | |
1915 | "Return Windows locale id for default locale setting.\n\ | |
1916 | By default, the system default locale setting is returned; if the optional\n\ | |
1917 | parameter USERP is non-nil, the user default locale setting is returned.\n\ | |
1918 | This is a numerical value; use `w32-get-locale-info' to convert to a\n\ | |
1919 | human-readable form.") | |
1920 | (userp) | |
1921 | Lisp_Object userp; | |
1922 | { | |
1923 | if (NILP (userp)) | |
1924 | return make_number (GetSystemDefaultLCID ()); | |
1925 | return make_number (GetUserDefaultLCID ()); | |
1926 | } | |
1927 | ||
1928 | ||
1929 | DEFUN ("w32-set-current-locale", Fw32_set_current_locale, Sw32_set_current_locale, 1, 1, 0, | |
1930 | "Make Windows locale LCID be the current locale setting for Emacs.\n\ | |
1931 | If successful, the new locale id is returned, otherwise nil.") | |
1932 | (lcid) | |
1933 | Lisp_Object lcid; | |
1934 | { | |
b7826503 | 1935 | CHECK_NUMBER (lcid); |
b2fc9f3d GV |
1936 | |
1937 | if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED)) | |
1938 | return Qnil; | |
1939 | ||
1940 | if (!SetThreadLocale (XINT (lcid))) | |
1941 | return Qnil; | |
1942 | ||
ef79fbba GV |
1943 | /* Need to set input thread locale if present. */ |
1944 | if (dwWindowsThreadId) | |
1945 | /* Reply is not needed. */ | |
1946 | PostThreadMessage (dwWindowsThreadId, WM_EMACS_SETLOCALE, XINT (lcid), 0); | |
1947 | ||
b2fc9f3d GV |
1948 | return make_number (GetThreadLocale ()); |
1949 | } | |
1950 | ||
0eaf5926 GV |
1951 | |
1952 | /* We need to build a global list, since the EnumCodePages callback | |
1953 | function isn't given a context pointer. */ | |
1954 | Lisp_Object Vw32_valid_codepages; | |
1955 | ||
1956 | BOOL CALLBACK enum_codepage_fn (LPTSTR codepageNum) | |
1957 | { | |
1958 | DWORD id = atoi (codepageNum); | |
1959 | Vw32_valid_codepages = Fcons (make_number (id), Vw32_valid_codepages); | |
1960 | return TRUE; | |
1961 | } | |
1962 | ||
1963 | DEFUN ("w32-get-valid-codepages", Fw32_get_valid_codepages, Sw32_get_valid_codepages, 0, 0, 0, | |
1964 | "Return list of all valid Windows codepages.") | |
1965 | () | |
1966 | { | |
1967 | Vw32_valid_codepages = Qnil; | |
1968 | ||
1969 | EnumSystemCodePages (enum_codepage_fn, CP_SUPPORTED); | |
1970 | ||
1971 | Vw32_valid_codepages = Fnreverse (Vw32_valid_codepages); | |
1972 | return Vw32_valid_codepages; | |
1973 | } | |
1974 | ||
1975 | ||
1976 | DEFUN ("w32-get-console-codepage", Fw32_get_console_codepage, Sw32_get_console_codepage, 0, 0, 0, | |
1977 | "Return current Windows codepage for console input.") | |
1978 | () | |
1979 | { | |
1980 | return make_number (GetConsoleCP ()); | |
1981 | } | |
1982 | ||
1983 | ||
1984 | DEFUN ("w32-set-console-codepage", Fw32_set_console_codepage, Sw32_set_console_codepage, 1, 1, 0, | |
1985 | "Make Windows codepage CP be the current codepage setting for Emacs.\n\ | |
1986 | The codepage setting affects keyboard input and display in tty mode.\n\ | |
1987 | If successful, the new CP is returned, otherwise nil.") | |
1988 | (cp) | |
1989 | Lisp_Object cp; | |
1990 | { | |
b7826503 | 1991 | CHECK_NUMBER (cp); |
0eaf5926 GV |
1992 | |
1993 | if (!IsValidCodePage (XINT (cp))) | |
1994 | return Qnil; | |
1995 | ||
1996 | if (!SetConsoleCP (XINT (cp))) | |
1997 | return Qnil; | |
1998 | ||
1999 | return make_number (GetConsoleCP ()); | |
2000 | } | |
2001 | ||
2002 | ||
2003 | DEFUN ("w32-get-console-output-codepage", Fw32_get_console_output_codepage, Sw32_get_console_output_codepage, 0, 0, 0, | |
2004 | "Return current Windows codepage for console output.") | |
2005 | () | |
2006 | { | |
2007 | return make_number (GetConsoleOutputCP ()); | |
2008 | } | |
2009 | ||
2010 | ||
2011 | DEFUN ("w32-set-console-output-codepage", Fw32_set_console_output_codepage, Sw32_set_console_output_codepage, 1, 1, 0, | |
2012 | "Make Windows codepage CP be the current codepage setting for Emacs.\n\ | |
2013 | The codepage setting affects keyboard input and display in tty mode.\n\ | |
2014 | If successful, the new CP is returned, otherwise nil.") | |
2015 | (cp) | |
2016 | Lisp_Object cp; | |
2017 | { | |
b7826503 | 2018 | CHECK_NUMBER (cp); |
0eaf5926 GV |
2019 | |
2020 | if (!IsValidCodePage (XINT (cp))) | |
2021 | return Qnil; | |
2022 | ||
2023 | if (!SetConsoleOutputCP (XINT (cp))) | |
2024 | return Qnil; | |
2025 | ||
2026 | return make_number (GetConsoleOutputCP ()); | |
2027 | } | |
2028 | ||
2029 | ||
2030 | DEFUN ("w32-get-codepage-charset", Fw32_get_codepage_charset, Sw32_get_codepage_charset, 1, 1, 0, | |
2031 | "Return charset of codepage CP.\n\ | |
2032 | Returns nil if the codepage is not valid.") | |
2033 | (cp) | |
2034 | Lisp_Object cp; | |
2035 | { | |
2036 | CHARSETINFO info; | |
2037 | ||
b7826503 | 2038 | CHECK_NUMBER (cp); |
0eaf5926 GV |
2039 | |
2040 | if (!IsValidCodePage (XINT (cp))) | |
2041 | return Qnil; | |
2042 | ||
2043 | if (TranslateCharsetInfo ((DWORD *) XINT (cp), &info, TCI_SRCCODEPAGE)) | |
2044 | return make_number (info.ciCharset); | |
2045 | ||
2046 | return Qnil; | |
2047 | } | |
2048 | ||
2049 | ||
2050 | DEFUN ("w32-get-valid-keyboard-layouts", Fw32_get_valid_keyboard_layouts, Sw32_get_valid_keyboard_layouts, 0, 0, 0, | |
2051 | "Return list of Windows keyboard languages and layouts.\n\ | |
2052 | The return value is a list of pairs of language id and layout id.") | |
2053 | () | |
2054 | { | |
2055 | int num_layouts = GetKeyboardLayoutList (0, NULL); | |
2056 | HKL * layouts = (HKL *) alloca (num_layouts * sizeof (HKL)); | |
2057 | Lisp_Object obj = Qnil; | |
2058 | ||
2059 | if (GetKeyboardLayoutList (num_layouts, layouts) == num_layouts) | |
2060 | { | |
2061 | while (--num_layouts >= 0) | |
2062 | { | |
2063 | DWORD kl = (DWORD) layouts[num_layouts]; | |
2064 | ||
2065 | obj = Fcons (Fcons (make_number (kl & 0xffff), | |
2066 | make_number ((kl >> 16) & 0xffff)), | |
2067 | obj); | |
2068 | } | |
2069 | } | |
2070 | ||
2071 | return obj; | |
2072 | } | |
2073 | ||
2074 | ||
2075 | DEFUN ("w32-get-keyboard-layout", Fw32_get_keyboard_layout, Sw32_get_keyboard_layout, 0, 0, 0, | |
2076 | "Return current Windows keyboard language and layout.\n\ | |
2077 | The return value is the cons of the language id and the layout id.") | |
2078 | () | |
2079 | { | |
2080 | DWORD kl = (DWORD) GetKeyboardLayout (dwWindowsThreadId); | |
2081 | ||
2082 | return Fcons (make_number (kl & 0xffff), | |
2083 | make_number ((kl >> 16) & 0xffff)); | |
2084 | } | |
2085 | ||
2086 | ||
2087 | DEFUN ("w32-set-keyboard-layout", Fw32_set_keyboard_layout, Sw32_set_keyboard_layout, 1, 1, 0, | |
2088 | "Make LAYOUT be the current keyboard layout for Emacs.\n\ | |
2089 | The keyboard layout setting affects interpretation of keyboard input.\n\ | |
2090 | If successful, the new layout id is returned, otherwise nil.") | |
2091 | (layout) | |
2092 | Lisp_Object layout; | |
2093 | { | |
2094 | DWORD kl; | |
2095 | ||
b7826503 PJ |
2096 | CHECK_CONS (layout); |
2097 | CHECK_NUMBER (XCAR (layout)); | |
2098 | CHECK_NUMBER (XCDR (layout)); | |
0eaf5926 | 2099 | |
8e713be6 KR |
2100 | kl = (XINT (XCAR (layout)) & 0xffff) |
2101 | | (XINT (XCDR (layout)) << 16); | |
0eaf5926 GV |
2102 | |
2103 | /* Synchronize layout with input thread. */ | |
2104 | if (dwWindowsThreadId) | |
2105 | { | |
2106 | if (PostThreadMessage (dwWindowsThreadId, WM_EMACS_SETKEYBOARDLAYOUT, | |
2107 | (WPARAM) kl, 0)) | |
2108 | { | |
2109 | MSG msg; | |
2110 | GetMessage (&msg, NULL, WM_EMACS_DONE, WM_EMACS_DONE); | |
2111 | ||
2112 | if (msg.wParam == 0) | |
2113 | return Qnil; | |
2114 | } | |
2115 | } | |
2116 | else if (!ActivateKeyboardLayout ((HKL) kl, 0)) | |
2117 | return Qnil; | |
2118 | ||
2119 | return Fw32_get_keyboard_layout (); | |
2120 | } | |
2121 | ||
b2fc9f3d | 2122 | \f |
93fdf2f8 RS |
2123 | syms_of_ntproc () |
2124 | { | |
b2fc9f3d GV |
2125 | Qhigh = intern ("high"); |
2126 | Qlow = intern ("low"); | |
2127 | ||
a11e68d0 | 2128 | #ifdef HAVE_SOCKETS |
fbd6baed GV |
2129 | defsubr (&Sw32_has_winsock); |
2130 | defsubr (&Sw32_unload_winsock); | |
a11e68d0 | 2131 | #endif |
b2fc9f3d GV |
2132 | defsubr (&Sw32_short_file_name); |
2133 | defsubr (&Sw32_long_file_name); | |
2134 | defsubr (&Sw32_set_process_priority); | |
2135 | defsubr (&Sw32_get_locale_info); | |
2136 | defsubr (&Sw32_get_current_locale_id); | |
2137 | defsubr (&Sw32_get_default_locale_id); | |
ef79fbba | 2138 | defsubr (&Sw32_get_valid_locale_ids); |
b2fc9f3d | 2139 | defsubr (&Sw32_set_current_locale); |
a11e68d0 | 2140 | |
0eaf5926 GV |
2141 | defsubr (&Sw32_get_console_codepage); |
2142 | defsubr (&Sw32_set_console_codepage); | |
2143 | defsubr (&Sw32_get_console_output_codepage); | |
2144 | defsubr (&Sw32_set_console_output_codepage); | |
2145 | defsubr (&Sw32_get_valid_codepages); | |
2146 | defsubr (&Sw32_get_codepage_charset); | |
2147 | ||
2148 | defsubr (&Sw32_get_valid_keyboard_layouts); | |
2149 | defsubr (&Sw32_get_keyboard_layout); | |
2150 | defsubr (&Sw32_set_keyboard_layout); | |
2151 | ||
fbd6baed | 2152 | DEFVAR_LISP ("w32-quote-process-args", &Vw32_quote_process_args, |
93fdf2f8 RS |
2153 | "Non-nil enables quoting of process arguments to ensure correct parsing.\n\ |
2154 | Because Windows does not directly pass argv arrays to child processes,\n\ | |
2155 | programs have to reconstruct the argv array by parsing the command\n\ | |
2156 | line string. For an argument to contain a space, it must be enclosed\n\ | |
2157 | in double quotes or it will be parsed as multiple arguments.\n\ | |
2158 | \n\ | |
b2fc9f3d GV |
2159 | If the value is a character, that character will be used to escape any\n\ |
2160 | quote characters that appear, otherwise a suitable escape character\n\ | |
2161 | will be chosen based on the type of the program."); | |
2162 | Vw32_quote_process_args = Qt; | |
817abdf6 | 2163 | |
fbd6baed GV |
2164 | DEFVAR_LISP ("w32-start-process-show-window", |
2165 | &Vw32_start_process_show_window, | |
82e7c0a9 | 2166 | "When nil, new child processes hide their windows.\n\ |
a55a5f3c AI |
2167 | When non-nil, they show their window in the method of their choice.\n\ |
2168 | This variable doesn't affect GUI applications, which will never be hidden."); | |
fbd6baed | 2169 | Vw32_start_process_show_window = Qnil; |
0ecf7d36 | 2170 | |
b2fc9f3d GV |
2171 | DEFVAR_LISP ("w32-start-process-share-console", |
2172 | &Vw32_start_process_share_console, | |
82e7c0a9 | 2173 | "When nil, new child processes are given a new console.\n\ |
b2fc9f3d GV |
2174 | When non-nil, they share the Emacs console; this has the limitation of\n\ |
2175 | allowing only only DOS subprocess to run at a time (whether started directly\n\ | |
2176 | or indirectly by Emacs), and preventing Emacs from cleanly terminating the\n\ | |
2177 | subprocess group, but may allow Emacs to interrupt a subprocess that doesn't\n\ | |
2178 | otherwise respond to interrupts from Emacs."); | |
2179 | Vw32_start_process_share_console = Qnil; | |
2180 | ||
82e7c0a9 AI |
2181 | DEFVAR_LISP ("w32-start-process-inherit-error-mode", |
2182 | &Vw32_start_process_inherit_error_mode, | |
2183 | "When nil, new child processes revert to the default error mode.\n\ | |
2184 | When non-nil, they inherit their error mode setting from Emacs, which stops\n\ | |
2185 | them blocking when trying to access unmounted drives etc."); | |
2186 | Vw32_start_process_inherit_error_mode = Qt; | |
2187 | ||
fbd6baed | 2188 | DEFVAR_INT ("w32-pipe-read-delay", &Vw32_pipe_read_delay, |
817abdf6 KH |
2189 | "Forced delay before reading subprocess output.\n\ |
2190 | This is done to improve the buffering of subprocess output, by\n\ | |
2191 | avoiding the inefficiency of frequently reading small amounts of data.\n\ | |
2192 | \n\ | |
2193 | If positive, the value is the number of milliseconds to sleep before\n\ | |
2194 | reading the subprocess output. If negative, the magnitude is the number\n\ | |
2195 | of time slices to wait (effectively boosting the priority of the child\n\ | |
2196 | process temporarily). A value of zero disables waiting entirely."); | |
fbd6baed | 2197 | Vw32_pipe_read_delay = 50; |
0c04091e | 2198 | |
fbd6baed | 2199 | DEFVAR_LISP ("w32-downcase-file-names", &Vw32_downcase_file_names, |
0c04091e | 2200 | "Non-nil means convert all-upper case file names to lower case.\n\ |
b67af52a JR |
2201 | This applies when performing completions and file name expansion.\n\ |
2202 | Note that the value of this setting also affects remote file names,\n\ | |
2203 | so you probably don't want to set to non-nil if you use case-sensitive\n\ | |
2204 | filesystems via ange-ftp."); | |
fbd6baed | 2205 | Vw32_downcase_file_names = Qnil; |
b2fc9f3d GV |
2206 | |
2207 | #if 0 | |
2208 | DEFVAR_LISP ("w32-generate-fake-inodes", &Vw32_generate_fake_inodes, | |
2209 | "Non-nil means attempt to fake realistic inode values.\n\ | |
2210 | This works by hashing the truename of files, and should detect \n\ | |
2211 | aliasing between long and short (8.3 DOS) names, but can have\n\ | |
2212 | false positives because of hash collisions. Note that determing\n\ | |
2213 | the truename of a file can be slow."); | |
2214 | Vw32_generate_fake_inodes = Qnil; | |
2215 | #endif | |
2216 | ||
2217 | DEFVAR_LISP ("w32-get-true-file-attributes", &Vw32_get_true_file_attributes, | |
2218 | "Non-nil means determine accurate link count in file-attributes.\n\ | |
2219 | This option slows down file-attributes noticeably, so is disabled by\n\ | |
2220 | default. Note that it is only useful for files on NTFS volumes,\n\ | |
2221 | where hard links are supported."); | |
2222 | Vw32_get_true_file_attributes = Qnil; | |
93fdf2f8 | 2223 | } |
c519b5e1 | 2224 | /* end of ntproc.c */ |