Commit | Line | Data |
---|---|---|
e9e23e23 | 1 | /* Process support for GNU Emacs on the Microsoft W32 API. |
0b5538bd | 2 | Copyright (C) 1992, 1995, 1999, 2000, 2001, 2002, 2003, 2004, |
8cabe764 | 3 | 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
6cdfb6e6 | 4 | |
3b7ad313 EN |
5 | This file is part of GNU Emacs. |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
684d6f5b | 9 | the Free Software Foundation; either version 3, or (at your option) |
3b7ad313 EN |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. | |
6cdfb6e6 RS |
21 | |
22 | Drew Bliss Oct 14, 1993 | |
23 | Adapted from alarm.c by Tim Fleehart | |
24 | */ | |
25 | ||
26 | #include <stdio.h> | |
27 | #include <stdlib.h> | |
28 | #include <errno.h> | |
29 | #include <io.h> | |
c519b5e1 | 30 | #include <fcntl.h> |
6cdfb6e6 | 31 | #include <signal.h> |
51f635c4 | 32 | #include <sys/file.h> |
6cdfb6e6 | 33 | |
c519b5e1 | 34 | /* must include CRT headers *before* config.h */ |
4838e624 PJ |
35 | |
36 | #ifdef HAVE_CONFIG_H | |
37 | #include <config.h> | |
38 | #endif | |
39 | ||
c519b5e1 GV |
40 | #undef signal |
41 | #undef wait | |
42 | #undef spawnve | |
43 | #undef select | |
44 | #undef kill | |
45 | ||
6cdfb6e6 | 46 | #include <windows.h> |
42c95ffb AI |
47 | #ifdef __GNUC__ |
48 | /* This definition is missing from mingw32 headers. */ | |
49 | extern BOOL WINAPI IsValidLocale(LCID, DWORD); | |
50 | #endif | |
6cdfb6e6 | 51 | |
d613418b EZ |
52 | #ifdef HAVE_LANGINFO_CODESET |
53 | #include <nl_types.h> | |
54 | #include <langinfo.h> | |
55 | #endif | |
56 | ||
6cdfb6e6 | 57 | #include "lisp.h" |
c949d9d0 | 58 | #include "character.h" |
489f9371 | 59 | #include "w32.h" |
b2fc9f3d | 60 | #include "w32heap.h" |
6cdfb6e6 | 61 | #include "systime.h" |
3d7eead0 GV |
62 | #include "syswait.h" |
63 | #include "process.h" | |
e7c15bba | 64 | #include "syssignal.h" |
ef79fbba | 65 | #include "w32term.h" |
3d7eead0 | 66 | |
8747ac3f EZ |
67 | #define RVA_TO_PTR(var,section,filedata) \ |
68 | ((void *)((section)->PointerToRawData \ | |
69 | + ((DWORD)(var) - (section)->VirtualAddress) \ | |
70 | + (filedata).file_base)) | |
71 | ||
93fdf2f8 RS |
72 | /* Control whether spawnve quotes arguments as necessary to ensure |
73 | correct parsing by child process. Because not all uses of spawnve | |
74 | are careful about constructing argv arrays, we make this behaviour | |
75 | conditional (off by default). */ | |
fbd6baed | 76 | Lisp_Object Vw32_quote_process_args; |
93fdf2f8 | 77 | |
0ecf7d36 RS |
78 | /* Control whether create_child causes the process' window to be |
79 | hidden. The default is nil. */ | |
fbd6baed | 80 | Lisp_Object Vw32_start_process_show_window; |
0ecf7d36 | 81 | |
b2fc9f3d GV |
82 | /* Control whether create_child causes the process to inherit Emacs' |
83 | console window, or be given a new one of its own. The default is | |
84 | nil, to allow multiple DOS programs to run on Win95. Having separate | |
85 | consoles also allows Emacs to cleanly terminate process groups. */ | |
86 | Lisp_Object Vw32_start_process_share_console; | |
87 | ||
82e7c0a9 AI |
88 | /* Control whether create_child cause the process to inherit Emacs' |
89 | error mode setting. The default is t, to minimize the possibility of | |
90 | subprocesses blocking when accessing unmounted drives. */ | |
91 | Lisp_Object Vw32_start_process_inherit_error_mode; | |
92 | ||
817abdf6 KH |
93 | /* Time to sleep before reading from a subprocess output pipe - this |
94 | avoids the inefficiency of frequently reading small amounts of data. | |
95 | This is primarily necessary for handling DOS processes on Windows 95, | |
e9e23e23 | 96 | but is useful for W32 processes on both Windows 95 and NT as well. */ |
5322f50b | 97 | int w32_pipe_read_delay; |
817abdf6 | 98 | |
0c04091e RS |
99 | /* Control conversion of upper case file names to lower case. |
100 | nil means no, t means yes. */ | |
fbd6baed | 101 | Lisp_Object Vw32_downcase_file_names; |
0c04091e | 102 | |
b2fc9f3d GV |
103 | /* Control whether stat() attempts to generate fake but hopefully |
104 | "accurate" inode values, by hashing the absolute truenames of files. | |
105 | This should detect aliasing between long and short names, but still | |
106 | allows the possibility of hash collisions. */ | |
107 | Lisp_Object Vw32_generate_fake_inodes; | |
108 | ||
109 | /* Control whether stat() attempts to determine file type and link count | |
110 | exactly, at the expense of slower operation. Since true hard links | |
111 | are supported on NTFS volumes, this is only relevant on NT. */ | |
112 | Lisp_Object Vw32_get_true_file_attributes; | |
2fa4f090 | 113 | extern Lisp_Object Qlocal; |
b2fc9f3d GV |
114 | |
115 | Lisp_Object Qhigh, Qlow; | |
817abdf6 | 116 | |
6cdfb6e6 | 117 | #ifdef EMACSDEBUG |
c519b5e1 | 118 | void _DebPrint (const char *fmt, ...) |
6cdfb6e6 | 119 | { |
c519b5e1 | 120 | char buf[1024]; |
6cdfb6e6 RS |
121 | va_list args; |
122 | ||
123 | va_start (args, fmt); | |
124 | vsprintf (buf, fmt, args); | |
125 | va_end (args); | |
126 | OutputDebugString (buf); | |
127 | } | |
128 | #endif | |
129 | ||
c519b5e1 | 130 | typedef void (_CALLBACK_ *signal_handler)(int); |
6cdfb6e6 RS |
131 | |
132 | /* Signal handlers...SIG_DFL == 0 so this is initialized correctly. */ | |
133 | static signal_handler sig_handlers[NSIG]; | |
134 | ||
135 | /* Fake signal implementation to record the SIGCHLD handler. */ | |
177c0ea7 | 136 | signal_handler |
c519b5e1 | 137 | sys_signal (int sig, signal_handler handler) |
6cdfb6e6 RS |
138 | { |
139 | signal_handler old; | |
177c0ea7 | 140 | |
6cdfb6e6 RS |
141 | if (sig != SIGCHLD) |
142 | { | |
143 | errno = EINVAL; | |
144 | return SIG_ERR; | |
145 | } | |
146 | old = sig_handlers[sig]; | |
147 | sig_handlers[sig] = handler; | |
148 | return old; | |
149 | } | |
150 | ||
c519b5e1 GV |
151 | /* Defined in <process.h> which conflicts with the local copy */ |
152 | #define _P_NOWAIT 1 | |
153 | ||
154 | /* Child process management list. */ | |
155 | int child_proc_count = 0; | |
156 | child_process child_procs[ MAX_CHILDREN ]; | |
157 | child_process *dead_child = NULL; | |
158 | ||
159 | DWORD WINAPI reader_thread (void *arg); | |
160 | ||
6cdfb6e6 | 161 | /* Find an unused process slot. */ |
c519b5e1 | 162 | child_process * |
6cdfb6e6 RS |
163 | new_child (void) |
164 | { | |
165 | child_process *cp; | |
c519b5e1 | 166 | DWORD id; |
177c0ea7 | 167 | |
6cdfb6e6 RS |
168 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) |
169 | if (!CHILD_ACTIVE (cp)) | |
c519b5e1 GV |
170 | goto Initialise; |
171 | if (child_proc_count == MAX_CHILDREN) | |
172 | return NULL; | |
173 | cp = &child_procs[child_proc_count++]; | |
174 | ||
175 | Initialise: | |
176 | memset (cp, 0, sizeof(*cp)); | |
177 | cp->fd = -1; | |
178 | cp->pid = -1; | |
179 | cp->procinfo.hProcess = NULL; | |
180 | cp->status = STATUS_READ_ERROR; | |
181 | ||
182 | /* use manual reset event so that select() will function properly */ | |
183 | cp->char_avail = CreateEvent (NULL, TRUE, FALSE, NULL); | |
184 | if (cp->char_avail) | |
185 | { | |
186 | cp->char_consumed = CreateEvent (NULL, FALSE, FALSE, NULL); | |
187 | if (cp->char_consumed) | |
188 | { | |
189 | cp->thrd = CreateThread (NULL, 1024, reader_thread, cp, 0, &id); | |
190 | if (cp->thrd) | |
191 | return cp; | |
192 | } | |
193 | } | |
194 | delete_child (cp); | |
195 | return NULL; | |
196 | } | |
197 | ||
177c0ea7 | 198 | void |
c519b5e1 GV |
199 | delete_child (child_process *cp) |
200 | { | |
201 | int i; | |
202 | ||
203 | /* Should not be deleting a child that is still needed. */ | |
204 | for (i = 0; i < MAXDESC; i++) | |
205 | if (fd_info[i].cp == cp) | |
206 | abort (); | |
207 | ||
208 | if (!CHILD_ACTIVE (cp)) | |
209 | return; | |
210 | ||
211 | /* reap thread if necessary */ | |
212 | if (cp->thrd) | |
213 | { | |
214 | DWORD rc; | |
215 | ||
216 | if (GetExitCodeThread (cp->thrd, &rc) && rc == STILL_ACTIVE) | |
217 | { | |
218 | /* let the thread exit cleanly if possible */ | |
219 | cp->status = STATUS_READ_ERROR; | |
220 | SetEvent (cp->char_consumed); | |
a017b515 JR |
221 | #if 0 |
222 | /* We used to forceably terminate the thread here, but it | |
223 | is normally unnecessary, and in abnormal cases, the worst that | |
224 | will happen is we have an extra idle thread hanging around | |
225 | waiting for the zombie process. */ | |
c519b5e1 GV |
226 | if (WaitForSingleObject (cp->thrd, 1000) != WAIT_OBJECT_0) |
227 | { | |
228 | DebPrint (("delete_child.WaitForSingleObject (thread) failed " | |
229 | "with %lu for fd %ld\n", GetLastError (), cp->fd)); | |
230 | TerminateThread (cp->thrd, 0); | |
231 | } | |
a017b515 | 232 | #endif |
c519b5e1 GV |
233 | } |
234 | CloseHandle (cp->thrd); | |
235 | cp->thrd = NULL; | |
236 | } | |
237 | if (cp->char_avail) | |
238 | { | |
239 | CloseHandle (cp->char_avail); | |
240 | cp->char_avail = NULL; | |
241 | } | |
242 | if (cp->char_consumed) | |
243 | { | |
244 | CloseHandle (cp->char_consumed); | |
245 | cp->char_consumed = NULL; | |
246 | } | |
247 | ||
248 | /* update child_proc_count (highest numbered slot in use plus one) */ | |
249 | if (cp == child_procs + child_proc_count - 1) | |
250 | { | |
251 | for (i = child_proc_count-1; i >= 0; i--) | |
252 | if (CHILD_ACTIVE (&child_procs[i])) | |
253 | { | |
254 | child_proc_count = i + 1; | |
255 | break; | |
256 | } | |
257 | } | |
258 | if (i < 0) | |
259 | child_proc_count = 0; | |
6cdfb6e6 RS |
260 | } |
261 | ||
262 | /* Find a child by pid. */ | |
263 | static child_process * | |
264 | find_child_pid (DWORD pid) | |
265 | { | |
266 | child_process *cp; | |
c519b5e1 | 267 | |
6cdfb6e6 RS |
268 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) |
269 | if (CHILD_ACTIVE (cp) && pid == cp->pid) | |
270 | return cp; | |
271 | return NULL; | |
272 | } | |
273 | ||
6cdfb6e6 | 274 | |
c519b5e1 GV |
275 | /* Thread proc for child process and socket reader threads. Each thread |
276 | is normally blocked until woken by select() to check for input by | |
277 | reading one char. When the read completes, char_avail is signalled | |
278 | to wake up the select emulator and the thread blocks itself again. */ | |
177c0ea7 | 279 | DWORD WINAPI |
6cdfb6e6 RS |
280 | reader_thread (void *arg) |
281 | { | |
282 | child_process *cp; | |
177c0ea7 | 283 | |
6cdfb6e6 RS |
284 | /* Our identity */ |
285 | cp = (child_process *)arg; | |
177c0ea7 | 286 | |
6cdfb6e6 | 287 | /* We have to wait for the go-ahead before we can start */ |
b2fc9f3d GV |
288 | if (cp == NULL |
289 | || WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0) | |
c519b5e1 GV |
290 | return 1; |
291 | ||
6cdfb6e6 RS |
292 | for (;;) |
293 | { | |
c519b5e1 GV |
294 | int rc; |
295 | ||
f9125cde KS |
296 | if (fd_info[cp->fd].flags & FILE_LISTEN) |
297 | rc = _sys_wait_accept (cp->fd); | |
298 | else | |
299 | rc = _sys_read_ahead (cp->fd); | |
c519b5e1 GV |
300 | |
301 | /* The name char_avail is a misnomer - it really just means the | |
302 | read-ahead has completed, whether successfully or not. */ | |
6cdfb6e6 RS |
303 | if (!SetEvent (cp->char_avail)) |
304 | { | |
305 | DebPrint (("reader_thread.SetEvent failed with %lu for fd %ld\n", | |
306 | GetLastError (), cp->fd)); | |
c519b5e1 GV |
307 | return 1; |
308 | } | |
309 | ||
310 | if (rc == STATUS_READ_ERROR) | |
311 | return 1; | |
177c0ea7 | 312 | |
6cdfb6e6 | 313 | /* If the read died, the child has died so let the thread die */ |
c519b5e1 | 314 | if (rc == STATUS_READ_FAILED) |
6cdfb6e6 | 315 | break; |
177c0ea7 | 316 | |
6cdfb6e6 RS |
317 | /* Wait until our input is acknowledged before reading again */ |
318 | if (WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0) | |
319 | { | |
320 | DebPrint (("reader_thread.WaitForSingleObject failed with " | |
321 | "%lu for fd %ld\n", GetLastError (), cp->fd)); | |
322 | break; | |
323 | } | |
324 | } | |
325 | return 0; | |
326 | } | |
327 | ||
b2fc9f3d GV |
328 | /* To avoid Emacs changing directory, we just record here the directory |
329 | the new process should start in. This is set just before calling | |
330 | sys_spawnve, and is not generally valid at any other time. */ | |
331 | static char * process_dir; | |
332 | ||
177c0ea7 | 333 | static BOOL |
a55a5f3c | 334 | create_child (char *exe, char *cmdline, char *env, int is_gui_app, |
c519b5e1 | 335 | int * pPid, child_process *cp) |
6cdfb6e6 | 336 | { |
6cdfb6e6 RS |
337 | STARTUPINFO start; |
338 | SECURITY_ATTRIBUTES sec_attrs; | |
42c95ffb | 339 | #if 0 |
6cdfb6e6 | 340 | SECURITY_DESCRIPTOR sec_desc; |
42c95ffb | 341 | #endif |
82e7c0a9 | 342 | DWORD flags; |
b2fc9f3d | 343 | char dir[ MAXPATHLEN ]; |
177c0ea7 | 344 | |
c519b5e1 | 345 | if (cp == NULL) abort (); |
177c0ea7 | 346 | |
6cdfb6e6 RS |
347 | memset (&start, 0, sizeof (start)); |
348 | start.cb = sizeof (start); | |
177c0ea7 | 349 | |
58d4e829 | 350 | #ifdef HAVE_NTGUI |
a55a5f3c | 351 | if (NILP (Vw32_start_process_show_window) && !is_gui_app) |
0ecf7d36 RS |
352 | start.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW; |
353 | else | |
354 | start.dwFlags = STARTF_USESTDHANDLES; | |
58d4e829 GV |
355 | start.wShowWindow = SW_HIDE; |
356 | ||
357 | start.hStdInput = GetStdHandle (STD_INPUT_HANDLE); | |
358 | start.hStdOutput = GetStdHandle (STD_OUTPUT_HANDLE); | |
359 | start.hStdError = GetStdHandle (STD_ERROR_HANDLE); | |
360 | #endif /* HAVE_NTGUI */ | |
361 | ||
42c95ffb | 362 | #if 0 |
6cdfb6e6 RS |
363 | /* Explicitly specify no security */ |
364 | if (!InitializeSecurityDescriptor (&sec_desc, SECURITY_DESCRIPTOR_REVISION)) | |
c519b5e1 | 365 | goto EH_Fail; |
6cdfb6e6 | 366 | if (!SetSecurityDescriptorDacl (&sec_desc, TRUE, NULL, FALSE)) |
c519b5e1 | 367 | goto EH_Fail; |
42c95ffb | 368 | #endif |
6cdfb6e6 | 369 | sec_attrs.nLength = sizeof (sec_attrs); |
42c95ffb | 370 | sec_attrs.lpSecurityDescriptor = NULL /* &sec_desc */; |
6cdfb6e6 | 371 | sec_attrs.bInheritHandle = FALSE; |
177c0ea7 | 372 | |
b2fc9f3d GV |
373 | strcpy (dir, process_dir); |
374 | unixtodos_filename (dir); | |
82e7c0a9 AI |
375 | |
376 | flags = (!NILP (Vw32_start_process_share_console) | |
377 | ? CREATE_NEW_PROCESS_GROUP | |
378 | : CREATE_NEW_CONSOLE); | |
379 | if (NILP (Vw32_start_process_inherit_error_mode)) | |
380 | flags |= CREATE_DEFAULT_ERROR_MODE; | |
6cdfb6e6 | 381 | if (!CreateProcess (exe, cmdline, &sec_attrs, NULL, TRUE, |
82e7c0a9 | 382 | flags, env, dir, &start, &cp->procinfo)) |
c519b5e1 GV |
383 | goto EH_Fail; |
384 | ||
385 | cp->pid = (int) cp->procinfo.dwProcessId; | |
386 | ||
387 | /* Hack for Windows 95, which assigns large (ie negative) pids */ | |
388 | if (cp->pid < 0) | |
389 | cp->pid = -cp->pid; | |
390 | ||
391 | /* pid must fit in a Lisp_Int */ | |
acba5cae | 392 | cp->pid = cp->pid & INTMASK; |
c519b5e1 | 393 | |
c519b5e1 | 394 | *pPid = cp->pid; |
b2fc9f3d | 395 | |
6cdfb6e6 | 396 | return TRUE; |
b2fc9f3d | 397 | |
6cdfb6e6 | 398 | EH_Fail: |
c519b5e1 | 399 | DebPrint (("create_child.CreateProcess failed: %ld\n", GetLastError());); |
6cdfb6e6 RS |
400 | return FALSE; |
401 | } | |
402 | ||
403 | /* create_child doesn't know what emacs' file handle will be for waiting | |
404 | on output from the child, so we need to make this additional call | |
405 | to register the handle with the process | |
406 | This way the select emulator knows how to match file handles with | |
407 | entries in child_procs. */ | |
177c0ea7 | 408 | void |
6cdfb6e6 RS |
409 | register_child (int pid, int fd) |
410 | { | |
411 | child_process *cp; | |
177c0ea7 | 412 | |
6cdfb6e6 RS |
413 | cp = find_child_pid (pid); |
414 | if (cp == NULL) | |
415 | { | |
416 | DebPrint (("register_child unable to find pid %lu\n", pid)); | |
417 | return; | |
418 | } | |
177c0ea7 | 419 | |
6cdfb6e6 RS |
420 | #ifdef FULL_DEBUG |
421 | DebPrint (("register_child registered fd %d with pid %lu\n", fd, pid)); | |
422 | #endif | |
177c0ea7 | 423 | |
6cdfb6e6 | 424 | cp->fd = fd; |
6cdfb6e6 | 425 | |
c519b5e1 GV |
426 | /* thread is initially blocked until select is called; set status so |
427 | that select will release thread */ | |
428 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
429 | ||
430 | /* attach child_process to fd_info */ | |
431 | if (fd_info[fd].cp != NULL) | |
6cdfb6e6 | 432 | { |
c519b5e1 GV |
433 | DebPrint (("register_child: fd_info[%d] apparently in use!\n", fd)); |
434 | abort (); | |
6cdfb6e6 | 435 | } |
c519b5e1 GV |
436 | |
437 | fd_info[fd].cp = cp; | |
6cdfb6e6 RS |
438 | } |
439 | ||
440 | /* When a process dies its pipe will break so the reader thread will | |
441 | signal failure to the select emulator. | |
442 | The select emulator then calls this routine to clean up. | |
443 | Since the thread signaled failure we can assume it is exiting. */ | |
177c0ea7 | 444 | static void |
c519b5e1 | 445 | reap_subprocess (child_process *cp) |
6cdfb6e6 | 446 | { |
c519b5e1 | 447 | if (cp->procinfo.hProcess) |
6cdfb6e6 | 448 | { |
c519b5e1 | 449 | /* Reap the process */ |
b2fc9f3d GV |
450 | #ifdef FULL_DEBUG |
451 | /* Process should have already died before we are called. */ | |
452 | if (WaitForSingleObject (cp->procinfo.hProcess, 0) != WAIT_OBJECT_0) | |
453 | DebPrint (("reap_subprocess: child fpr fd %d has not died yet!", cp->fd)); | |
454 | #endif | |
c519b5e1 GV |
455 | CloseHandle (cp->procinfo.hProcess); |
456 | cp->procinfo.hProcess = NULL; | |
457 | CloseHandle (cp->procinfo.hThread); | |
458 | cp->procinfo.hThread = NULL; | |
6cdfb6e6 | 459 | } |
c519b5e1 GV |
460 | |
461 | /* For asynchronous children, the child_proc resources will be freed | |
462 | when the last pipe read descriptor is closed; for synchronous | |
463 | children, we must explicitly free the resources now because | |
464 | register_child has not been called. */ | |
465 | if (cp->fd == -1) | |
466 | delete_child (cp); | |
6cdfb6e6 RS |
467 | } |
468 | ||
469 | /* Wait for any of our existing child processes to die | |
470 | When it does, close its handle | |
471 | Return the pid and fill in the status if non-NULL. */ | |
22759c72 | 472 | |
177c0ea7 | 473 | int |
c519b5e1 | 474 | sys_wait (int *status) |
6cdfb6e6 RS |
475 | { |
476 | DWORD active, retval; | |
477 | int nh; | |
c519b5e1 | 478 | int pid; |
6cdfb6e6 RS |
479 | child_process *cp, *cps[MAX_CHILDREN]; |
480 | HANDLE wait_hnd[MAX_CHILDREN]; | |
177c0ea7 | 481 | |
6cdfb6e6 RS |
482 | nh = 0; |
483 | if (dead_child != NULL) | |
484 | { | |
485 | /* We want to wait for a specific child */ | |
c519b5e1 | 486 | wait_hnd[nh] = dead_child->procinfo.hProcess; |
6cdfb6e6 | 487 | cps[nh] = dead_child; |
c519b5e1 | 488 | if (!wait_hnd[nh]) abort (); |
6cdfb6e6 | 489 | nh++; |
b2fc9f3d GV |
490 | active = 0; |
491 | goto get_result; | |
6cdfb6e6 RS |
492 | } |
493 | else | |
494 | { | |
495 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) | |
c519b5e1 | 496 | /* some child_procs might be sockets; ignore them */ |
3ac04ed0 CY |
497 | if (CHILD_ACTIVE (cp) && cp->procinfo.hProcess |
498 | && (cp->fd < 0 || (fd_info[cp->fd].flags & FILE_AT_EOF) != 0)) | |
6cdfb6e6 | 499 | { |
c519b5e1 | 500 | wait_hnd[nh] = cp->procinfo.hProcess; |
6cdfb6e6 RS |
501 | cps[nh] = cp; |
502 | nh++; | |
503 | } | |
504 | } | |
177c0ea7 | 505 | |
6cdfb6e6 RS |
506 | if (nh == 0) |
507 | { | |
508 | /* Nothing to wait on, so fail */ | |
509 | errno = ECHILD; | |
510 | return -1; | |
511 | } | |
b2fc9f3d GV |
512 | |
513 | do | |
514 | { | |
515 | /* Check for quit about once a second. */ | |
516 | QUIT; | |
517 | active = WaitForMultipleObjects (nh, wait_hnd, FALSE, 1000); | |
518 | } while (active == WAIT_TIMEOUT); | |
519 | ||
6cdfb6e6 RS |
520 | if (active == WAIT_FAILED) |
521 | { | |
522 | errno = EBADF; | |
523 | return -1; | |
524 | } | |
b2fc9f3d GV |
525 | else if (active >= WAIT_OBJECT_0 |
526 | && active < WAIT_OBJECT_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
527 | { |
528 | active -= WAIT_OBJECT_0; | |
529 | } | |
b2fc9f3d GV |
530 | else if (active >= WAIT_ABANDONED_0 |
531 | && active < WAIT_ABANDONED_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
532 | { |
533 | active -= WAIT_ABANDONED_0; | |
534 | } | |
b2fc9f3d GV |
535 | else |
536 | abort (); | |
537 | ||
538 | get_result: | |
6cdfb6e6 RS |
539 | if (!GetExitCodeProcess (wait_hnd[active], &retval)) |
540 | { | |
541 | DebPrint (("Wait.GetExitCodeProcess failed with %lu\n", | |
542 | GetLastError ())); | |
543 | retval = 1; | |
544 | } | |
545 | if (retval == STILL_ACTIVE) | |
546 | { | |
547 | /* Should never happen */ | |
548 | DebPrint (("Wait.WaitForMultipleObjects returned an active process\n")); | |
549 | errno = EINVAL; | |
550 | return -1; | |
551 | } | |
bc69349b RS |
552 | |
553 | /* Massage the exit code from the process to match the format expected | |
8e6208c5 | 554 | by the WIFSTOPPED et al macros in syswait.h. Only WIFSIGNALED and |
bc69349b RS |
555 | WIFEXITED are supported; WIFSTOPPED doesn't make sense under NT. */ |
556 | ||
557 | if (retval == STATUS_CONTROL_C_EXIT) | |
558 | retval = SIGINT; | |
559 | else | |
560 | retval <<= 8; | |
177c0ea7 | 561 | |
6cdfb6e6 | 562 | cp = cps[active]; |
c519b5e1 GV |
563 | pid = cp->pid; |
564 | #ifdef FULL_DEBUG | |
565 | DebPrint (("Wait signaled with process pid %d\n", cp->pid)); | |
566 | #endif | |
22759c72 | 567 | |
6cdfb6e6 RS |
568 | if (status) |
569 | { | |
22759c72 KH |
570 | *status = retval; |
571 | } | |
572 | else if (synch_process_alive) | |
573 | { | |
574 | synch_process_alive = 0; | |
22759c72 | 575 | |
3d7eead0 GV |
576 | /* Report the status of the synchronous process. */ |
577 | if (WIFEXITED (retval)) | |
578 | synch_process_retcode = WRETCODE (retval); | |
579 | else if (WIFSIGNALED (retval)) | |
580 | { | |
581 | int code = WTERMSIG (retval); | |
68c45bf0 PE |
582 | char *signame; |
583 | ||
ca9c0567 | 584 | synchronize_system_messages_locale (); |
68c45bf0 PE |
585 | signame = strsignal (code); |
586 | ||
3d7eead0 GV |
587 | if (signame == 0) |
588 | signame = "unknown"; | |
589 | ||
590 | synch_process_death = signame; | |
591 | } | |
c519b5e1 GV |
592 | |
593 | reap_subprocess (cp); | |
6cdfb6e6 | 594 | } |
b2fc9f3d GV |
595 | |
596 | reap_subprocess (cp); | |
177c0ea7 | 597 | |
c519b5e1 | 598 | return pid; |
6cdfb6e6 RS |
599 | } |
600 | ||
75be5258 EZ |
601 | /* Old versions of w32api headers don't have separate 32-bit and |
602 | 64-bit defines, but the one they have matches the 32-bit variety. */ | |
603 | #ifndef IMAGE_NT_OPTIONAL_HDR32_MAGIC | |
604 | # define IMAGE_NT_OPTIONAL_HDR32_MAGIC IMAGE_NT_OPTIONAL_HDR_MAGIC | |
605 | # define IMAGE_OPTIONAL_HEADER32 IMAGE_OPTIONAL_HEADER | |
606 | #endif | |
607 | ||
b2fc9f3d | 608 | void |
a55a5f3c | 609 | w32_executable_type (char * filename, int * is_dos_app, int * is_cygnus_app, int * is_gui_app) |
817abdf6 | 610 | { |
b2fc9f3d GV |
611 | file_data executable; |
612 | char * p; | |
177c0ea7 | 613 | |
b2fc9f3d GV |
614 | /* Default values in case we can't tell for sure. */ |
615 | *is_dos_app = FALSE; | |
616 | *is_cygnus_app = FALSE; | |
a55a5f3c | 617 | *is_gui_app = FALSE; |
b2fc9f3d GV |
618 | |
619 | if (!open_input_file (&executable, filename)) | |
620 | return; | |
817abdf6 | 621 | |
b2fc9f3d | 622 | p = strrchr (filename, '.'); |
177c0ea7 | 623 | |
b2fc9f3d GV |
624 | /* We can only identify DOS .com programs from the extension. */ |
625 | if (p && stricmp (p, ".com") == 0) | |
626 | *is_dos_app = TRUE; | |
627 | else if (p && (stricmp (p, ".bat") == 0 | |
628 | || stricmp (p, ".cmd") == 0)) | |
629 | { | |
630 | /* A DOS shell script - it appears that CreateProcess is happy to | |
631 | accept this (somewhat surprisingly); presumably it looks at | |
632 | COMSPEC to determine what executable to actually invoke. | |
633 | Therefore, we have to do the same here as well. */ | |
634 | /* Actually, I think it uses the program association for that | |
635 | extension, which is defined in the registry. */ | |
636 | p = egetenv ("COMSPEC"); | |
637 | if (p) | |
a55a5f3c | 638 | w32_executable_type (p, is_dos_app, is_cygnus_app, is_gui_app); |
b2fc9f3d GV |
639 | } |
640 | else | |
817abdf6 | 641 | { |
b2fc9f3d GV |
642 | /* Look for DOS .exe signature - if found, we must also check that |
643 | it isn't really a 16- or 32-bit Windows exe, since both formats | |
644 | start with a DOS program stub. Note that 16-bit Windows | |
645 | executables use the OS/2 1.x format. */ | |
817abdf6 | 646 | |
b2fc9f3d GV |
647 | IMAGE_DOS_HEADER * dos_header; |
648 | IMAGE_NT_HEADERS * nt_header; | |
649 | ||
650 | dos_header = (PIMAGE_DOS_HEADER) executable.file_base; | |
651 | if (dos_header->e_magic != IMAGE_DOS_SIGNATURE) | |
652 | goto unwind; | |
653 | ||
654 | nt_header = (PIMAGE_NT_HEADERS) ((char *) dos_header + dos_header->e_lfanew); | |
655 | ||
177c0ea7 | 656 | if ((char *) nt_header > (char *) dos_header + executable.size) |
817abdf6 | 657 | { |
b2fc9f3d GV |
658 | /* Some dos headers (pkunzip) have bogus e_lfanew fields. */ |
659 | *is_dos_app = TRUE; | |
177c0ea7 | 660 | } |
b2fc9f3d GV |
661 | else if (nt_header->Signature != IMAGE_NT_SIGNATURE |
662 | && LOWORD (nt_header->Signature) != IMAGE_OS2_SIGNATURE) | |
663 | { | |
664 | *is_dos_app = TRUE; | |
665 | } | |
666 | else if (nt_header->Signature == IMAGE_NT_SIGNATURE) | |
667 | { | |
2b6e2f4d JR |
668 | IMAGE_DATA_DIRECTORY *data_dir = NULL; |
669 | if (nt_header->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC) | |
670 | { | |
671 | /* Ensure we are using the 32 bit structure. */ | |
672 | IMAGE_OPTIONAL_HEADER32 *opt | |
673 | = (IMAGE_OPTIONAL_HEADER32*) &(nt_header->OptionalHeader); | |
674 | data_dir = opt->DataDirectory; | |
675 | *is_gui_app = (opt->Subsystem == IMAGE_SUBSYSTEM_WINDOWS_GUI); | |
676 | } | |
677 | /* MingW 3.12 has the required 64 bit structs, but in case older | |
678 | versions don't, only check 64 bit exes if we know how. */ | |
679 | #ifdef IMAGE_NT_OPTIONAL_HDR64_MAGIC | |
680 | else if (nt_header->OptionalHeader.Magic | |
681 | == IMAGE_NT_OPTIONAL_HDR64_MAGIC) | |
682 | { | |
683 | IMAGE_OPTIONAL_HEADER64 *opt | |
684 | = (IMAGE_OPTIONAL_HEADER64*) &(nt_header->OptionalHeader); | |
685 | data_dir = opt->DataDirectory; | |
686 | *is_gui_app = (opt->Subsystem == IMAGE_SUBSYSTEM_WINDOWS_GUI); | |
687 | } | |
688 | #endif | |
689 | if (data_dir) | |
690 | { | |
691 | /* Look for cygwin.dll in DLL import list. */ | |
692 | IMAGE_DATA_DIRECTORY import_dir = | |
693 | data_dir[IMAGE_DIRECTORY_ENTRY_IMPORT]; | |
694 | IMAGE_IMPORT_DESCRIPTOR * imports; | |
695 | IMAGE_SECTION_HEADER * section; | |
696 | ||
697 | section = rva_to_section (import_dir.VirtualAddress, nt_header); | |
698 | imports = RVA_TO_PTR (import_dir.VirtualAddress, section, | |
699 | executable); | |
700 | ||
701 | for ( ; imports->Name; imports++) | |
702 | { | |
703 | char * dllname = RVA_TO_PTR (imports->Name, section, | |
704 | executable); | |
705 | ||
706 | /* The exact name of the cygwin dll has changed with | |
707 | various releases, but hopefully this will be reasonably | |
708 | future proof. */ | |
709 | if (strncmp (dllname, "cygwin", 6) == 0) | |
710 | { | |
711 | *is_cygnus_app = TRUE; | |
712 | break; | |
713 | } | |
714 | } | |
715 | } | |
b2fc9f3d | 716 | } |
817abdf6 | 717 | } |
177c0ea7 | 718 | |
b2fc9f3d GV |
719 | unwind: |
720 | close_file_data (&executable); | |
817abdf6 KH |
721 | } |
722 | ||
d9709fde | 723 | int |
42c95ffb | 724 | compare_env (const void *strp1, const void *strp2) |
d9709fde | 725 | { |
42c95ffb | 726 | const char *str1 = *(const char **)strp1, *str2 = *(const char **)strp2; |
d9709fde GV |
727 | |
728 | while (*str1 && *str2 && *str1 != '=' && *str2 != '=') | |
729 | { | |
11c22fff AI |
730 | /* Sort order in command.com/cmd.exe is based on uppercasing |
731 | names, so do the same here. */ | |
732 | if (toupper (*str1) > toupper (*str2)) | |
d9709fde | 733 | return 1; |
11c22fff | 734 | else if (toupper (*str1) < toupper (*str2)) |
d9709fde GV |
735 | return -1; |
736 | str1++, str2++; | |
737 | } | |
738 | ||
739 | if (*str1 == '=' && *str2 == '=') | |
740 | return 0; | |
741 | else if (*str1 == '=') | |
742 | return -1; | |
743 | else | |
744 | return 1; | |
745 | } | |
746 | ||
747 | void | |
748 | merge_and_sort_env (char **envp1, char **envp2, char **new_envp) | |
749 | { | |
750 | char **optr, **nptr; | |
751 | int num; | |
752 | ||
753 | nptr = new_envp; | |
754 | optr = envp1; | |
755 | while (*optr) | |
756 | *nptr++ = *optr++; | |
757 | num = optr - envp1; | |
758 | ||
759 | optr = envp2; | |
760 | while (*optr) | |
761 | *nptr++ = *optr++; | |
762 | num += optr - envp2; | |
763 | ||
764 | qsort (new_envp, num, sizeof (char *), compare_env); | |
765 | ||
766 | *nptr = NULL; | |
767 | } | |
6cdfb6e6 RS |
768 | |
769 | /* When a new child process is created we need to register it in our list, | |
770 | so intercept spawn requests. */ | |
177c0ea7 | 771 | int |
c519b5e1 | 772 | sys_spawnve (int mode, char *cmdname, char **argv, char **envp) |
6cdfb6e6 | 773 | { |
0a4de642 | 774 | Lisp_Object program, full; |
6cdfb6e6 | 775 | char *cmdline, *env, *parg, **targ; |
d9709fde | 776 | int arglen, numenv; |
c519b5e1 GV |
777 | int pid; |
778 | child_process *cp; | |
a55a5f3c | 779 | int is_dos_app, is_cygnus_app, is_gui_app; |
b2fc9f3d GV |
780 | int do_quoting = 0; |
781 | char escape_char; | |
d9709fde GV |
782 | /* We pass our process ID to our children by setting up an environment |
783 | variable in their environment. */ | |
784 | char ppid_env_var_buffer[64]; | |
785 | char *extra_env[] = {ppid_env_var_buffer, NULL}; | |
0a7a6051 JR |
786 | /* These are the characters that cause an argument to need quoting. |
787 | Arguments with whitespace characters need quoting to prevent the | |
788 | argument being split into two or more. Arguments with wildcards | |
789 | are also quoted, for consistency with posix platforms, where wildcards | |
790 | are not expanded if we run the program directly without a shell. | |
791 | Some extra whitespace characters need quoting in Cygwin programs, | |
792 | so this list is conditionally modified below. */ | |
793 | char *sepchars = " \t*?"; | |
d9709fde | 794 | |
c519b5e1 GV |
795 | /* We don't care about the other modes */ |
796 | if (mode != _P_NOWAIT) | |
797 | { | |
798 | errno = EINVAL; | |
799 | return -1; | |
800 | } | |
0a4de642 RS |
801 | |
802 | /* Handle executable names without an executable suffix. */ | |
803 | program = make_string (cmdname, strlen (cmdname)); | |
804 | if (NILP (Ffile_executable_p (program))) | |
805 | { | |
806 | struct gcpro gcpro1; | |
177c0ea7 | 807 | |
0a4de642 RS |
808 | full = Qnil; |
809 | GCPRO1 (program); | |
44c7a526 | 810 | openp (Vexec_path, program, Vexec_suffixes, &full, make_number (X_OK)); |
0a4de642 RS |
811 | UNGCPRO; |
812 | if (NILP (full)) | |
813 | { | |
814 | errno = EINVAL; | |
815 | return -1; | |
816 | } | |
b2fc9f3d | 817 | program = full; |
0a4de642 RS |
818 | } |
819 | ||
b2fc9f3d | 820 | /* make sure argv[0] and cmdname are both in DOS format */ |
d5db4077 | 821 | cmdname = SDATA (program); |
c519b5e1 GV |
822 | unixtodos_filename (cmdname); |
823 | argv[0] = cmdname; | |
817abdf6 | 824 | |
ef79fbba | 825 | /* Determine whether program is a 16-bit DOS executable, or a w32 |
b2fc9f3d GV |
826 | executable that is implicitly linked to the Cygnus dll (implying it |
827 | was compiled with the Cygnus GNU toolchain and hence relies on | |
828 | cygwin.dll to parse the command line - we use this to decide how to | |
a55a5f3c AI |
829 | escape quote chars in command line args that must be quoted). |
830 | ||
831 | Also determine whether it is a GUI app, so that we don't hide its | |
832 | initial window unless specifically requested. */ | |
833 | w32_executable_type (cmdname, &is_dos_app, &is_cygnus_app, &is_gui_app); | |
b2fc9f3d GV |
834 | |
835 | /* On Windows 95, if cmdname is a DOS app, we invoke a helper | |
836 | application to start it by specifying the helper app as cmdname, | |
837 | while leaving the real app name as argv[0]. */ | |
838 | if (is_dos_app) | |
817abdf6 | 839 | { |
b2fc9f3d GV |
840 | cmdname = alloca (MAXPATHLEN); |
841 | if (egetenv ("CMDPROXY")) | |
842 | strcpy (cmdname, egetenv ("CMDPROXY")); | |
843 | else | |
844 | { | |
d5db4077 | 845 | strcpy (cmdname, SDATA (Vinvocation_directory)); |
b2fc9f3d GV |
846 | strcat (cmdname, "cmdproxy.exe"); |
847 | } | |
848 | unixtodos_filename (cmdname); | |
817abdf6 | 849 | } |
177c0ea7 | 850 | |
6cdfb6e6 RS |
851 | /* we have to do some conjuring here to put argv and envp into the |
852 | form CreateProcess wants... argv needs to be a space separated/null | |
853 | terminated list of parameters, and envp is a null | |
854 | separated/double-null terminated list of parameters. | |
c519b5e1 | 855 | |
b2fc9f3d GV |
856 | Additionally, zero-length args and args containing whitespace or |
857 | quote chars need to be wrapped in double quotes - for this to work, | |
858 | embedded quotes need to be escaped as well. The aim is to ensure | |
859 | the child process reconstructs the argv array we start with | |
860 | exactly, so we treat quotes at the beginning and end of arguments | |
861 | as embedded quotes. | |
862 | ||
ef79fbba | 863 | The w32 GNU-based library from Cygnus doubles quotes to escape |
b2fc9f3d GV |
864 | them, while MSVC uses backslash for escaping. (Actually the MSVC |
865 | startup code does attempt to recognise doubled quotes and accept | |
866 | them, but gets it wrong and ends up requiring three quotes to get a | |
867 | single embedded quote!) So by default we decide whether to use | |
868 | quote or backslash as the escape character based on whether the | |
869 | binary is apparently a Cygnus compiled app. | |
870 | ||
871 | Note that using backslash to escape embedded quotes requires | |
872 | additional special handling if an embedded quote is already | |
873 | preceeded by backslash, or if an arg requiring quoting ends with | |
874 | backslash. In such cases, the run of escape characters needs to be | |
875 | doubled. For consistency, we apply this special handling as long | |
876 | as the escape character is not quote. | |
877 | ||
878 | Since we have no idea how large argv and envp are likely to be we | |
879 | figure out list lengths on the fly and allocate them. */ | |
880 | ||
881 | if (!NILP (Vw32_quote_process_args)) | |
882 | { | |
883 | do_quoting = 1; | |
884 | /* Override escape char by binding w32-quote-process-args to | |
885 | desired character, or use t for auto-selection. */ | |
886 | if (INTEGERP (Vw32_quote_process_args)) | |
887 | escape_char = XINT (Vw32_quote_process_args); | |
888 | else | |
889 | escape_char = is_cygnus_app ? '"' : '\\'; | |
890 | } | |
177c0ea7 JB |
891 | |
892 | /* Cygwin apps needs quoting a bit more often */ | |
dbb70029 GM |
893 | if (escape_char == '"') |
894 | sepchars = "\r\n\t\f '"; | |
895 | ||
6cdfb6e6 RS |
896 | /* do argv... */ |
897 | arglen = 0; | |
898 | targ = argv; | |
899 | while (*targ) | |
900 | { | |
c519b5e1 | 901 | char * p = *targ; |
b2fc9f3d GV |
902 | int need_quotes = 0; |
903 | int escape_char_run = 0; | |
c519b5e1 GV |
904 | |
905 | if (*p == 0) | |
b2fc9f3d GV |
906 | need_quotes = 1; |
907 | for ( ; *p; p++) | |
908 | { | |
dbb70029 GM |
909 | if (escape_char == '"' && *p == '\\') |
910 | /* If it's a Cygwin app, \ needs to be escaped. */ | |
911 | arglen++; | |
912 | else if (*p == '"') | |
b2fc9f3d GV |
913 | { |
914 | /* allow for embedded quotes to be escaped */ | |
915 | arglen++; | |
916 | need_quotes = 1; | |
917 | /* handle the case where the embedded quote is already escaped */ | |
918 | if (escape_char_run > 0) | |
919 | { | |
920 | /* To preserve the arg exactly, we need to double the | |
921 | preceding escape characters (plus adding one to | |
922 | escape the quote character itself). */ | |
923 | arglen += escape_char_run; | |
924 | } | |
925 | } | |
dbb70029 | 926 | else if (strchr (sepchars, *p) != NULL) |
b2fc9f3d GV |
927 | { |
928 | need_quotes = 1; | |
929 | } | |
930 | ||
931 | if (*p == escape_char && escape_char != '"') | |
932 | escape_char_run++; | |
933 | else | |
934 | escape_char_run = 0; | |
935 | } | |
936 | if (need_quotes) | |
937 | { | |
938 | arglen += 2; | |
939 | /* handle the case where the arg ends with an escape char - we | |
940 | must not let the enclosing quote be escaped. */ | |
941 | if (escape_char_run > 0) | |
942 | arglen += escape_char_run; | |
943 | } | |
6cdfb6e6 RS |
944 | arglen += strlen (*targ++) + 1; |
945 | } | |
c519b5e1 | 946 | cmdline = alloca (arglen); |
6cdfb6e6 RS |
947 | targ = argv; |
948 | parg = cmdline; | |
949 | while (*targ) | |
950 | { | |
c519b5e1 | 951 | char * p = *targ; |
b2fc9f3d | 952 | int need_quotes = 0; |
c519b5e1 GV |
953 | |
954 | if (*p == 0) | |
b2fc9f3d | 955 | need_quotes = 1; |
93fdf2f8 | 956 | |
b2fc9f3d | 957 | if (do_quoting) |
93fdf2f8 | 958 | { |
93fdf2f8 | 959 | for ( ; *p; p++) |
dbb70029 | 960 | if ((strchr (sepchars, *p) != NULL) || *p == '"') |
b2fc9f3d | 961 | need_quotes = 1; |
93fdf2f8 | 962 | } |
b2fc9f3d | 963 | if (need_quotes) |
c519b5e1 | 964 | { |
b2fc9f3d | 965 | int escape_char_run = 0; |
c519b5e1 GV |
966 | char * first; |
967 | char * last; | |
968 | ||
969 | p = *targ; | |
970 | first = p; | |
971 | last = p + strlen (p) - 1; | |
972 | *parg++ = '"'; | |
b2fc9f3d GV |
973 | #if 0 |
974 | /* This version does not escape quotes if they occur at the | |
975 | beginning or end of the arg - this could lead to incorrect | |
976 | behaviour when the arg itself represents a command line | |
977 | containing quoted args. I believe this was originally done | |
978 | as a hack to make some things work, before | |
979 | `w32-quote-process-args' was added. */ | |
c519b5e1 GV |
980 | while (*p) |
981 | { | |
982 | if (*p == '"' && p > first && p < last) | |
b2fc9f3d | 983 | *parg++ = escape_char; /* escape embedded quotes */ |
c519b5e1 GV |
984 | *parg++ = *p++; |
985 | } | |
b2fc9f3d GV |
986 | #else |
987 | for ( ; *p; p++) | |
988 | { | |
989 | if (*p == '"') | |
990 | { | |
991 | /* double preceding escape chars if any */ | |
992 | while (escape_char_run > 0) | |
993 | { | |
994 | *parg++ = escape_char; | |
995 | escape_char_run--; | |
996 | } | |
997 | /* escape all quote chars, even at beginning or end */ | |
998 | *parg++ = escape_char; | |
999 | } | |
dbb70029 GM |
1000 | else if (escape_char == '"' && *p == '\\') |
1001 | *parg++ = '\\'; | |
b2fc9f3d GV |
1002 | *parg++ = *p; |
1003 | ||
1004 | if (*p == escape_char && escape_char != '"') | |
1005 | escape_char_run++; | |
1006 | else | |
1007 | escape_char_run = 0; | |
1008 | } | |
1009 | /* double escape chars before enclosing quote */ | |
1010 | while (escape_char_run > 0) | |
1011 | { | |
1012 | *parg++ = escape_char; | |
1013 | escape_char_run--; | |
1014 | } | |
1015 | #endif | |
c519b5e1 GV |
1016 | *parg++ = '"'; |
1017 | } | |
1018 | else | |
1019 | { | |
1020 | strcpy (parg, *targ); | |
1021 | parg += strlen (*targ); | |
1022 | } | |
6cdfb6e6 | 1023 | *parg++ = ' '; |
c519b5e1 | 1024 | targ++; |
6cdfb6e6 RS |
1025 | } |
1026 | *--parg = '\0'; | |
177c0ea7 | 1027 | |
6cdfb6e6 RS |
1028 | /* and envp... */ |
1029 | arglen = 1; | |
1030 | targ = envp; | |
d9709fde | 1031 | numenv = 1; /* for end null */ |
6cdfb6e6 RS |
1032 | while (*targ) |
1033 | { | |
1034 | arglen += strlen (*targ++) + 1; | |
d9709fde | 1035 | numenv++; |
6cdfb6e6 | 1036 | } |
d9709fde | 1037 | /* extra env vars... */ |
177c0ea7 | 1038 | sprintf (ppid_env_var_buffer, "EM_PARENT_PROCESS_ID=%d", |
6cdfb6e6 RS |
1039 | GetCurrentProcessId ()); |
1040 | arglen += strlen (ppid_env_var_buffer) + 1; | |
d9709fde | 1041 | numenv++; |
6cdfb6e6 | 1042 | |
d9709fde GV |
1043 | /* merge env passed in and extra env into one, and sort it. */ |
1044 | targ = (char **) alloca (numenv * sizeof (char *)); | |
1045 | merge_and_sort_env (envp, extra_env, targ); | |
1046 | ||
1047 | /* concatenate env entries. */ | |
c519b5e1 | 1048 | env = alloca (arglen); |
6cdfb6e6 RS |
1049 | parg = env; |
1050 | while (*targ) | |
1051 | { | |
1052 | strcpy (parg, *targ); | |
1053 | parg += strlen (*targ++); | |
1054 | *parg++ = '\0'; | |
1055 | } | |
6cdfb6e6 RS |
1056 | *parg++ = '\0'; |
1057 | *parg = '\0'; | |
c519b5e1 GV |
1058 | |
1059 | cp = new_child (); | |
1060 | if (cp == NULL) | |
1061 | { | |
1062 | errno = EAGAIN; | |
1063 | return -1; | |
1064 | } | |
177c0ea7 | 1065 | |
6cdfb6e6 | 1066 | /* Now create the process. */ |
a55a5f3c | 1067 | if (!create_child (cmdname, cmdline, env, is_gui_app, &pid, cp)) |
6cdfb6e6 | 1068 | { |
c519b5e1 | 1069 | delete_child (cp); |
6cdfb6e6 | 1070 | errno = ENOEXEC; |
c519b5e1 | 1071 | return -1; |
6cdfb6e6 | 1072 | } |
177c0ea7 | 1073 | |
c519b5e1 | 1074 | return pid; |
6cdfb6e6 RS |
1075 | } |
1076 | ||
1077 | /* Emulate the select call | |
1078 | Wait for available input on any of the given rfds, or timeout if | |
1079 | a timeout is given and no input is detected | |
b2fc9f3d GV |
1080 | wfds and efds are not supported and must be NULL. |
1081 | ||
1082 | For simplicity, we detect the death of child processes here and | |
1083 | synchronously call the SIGCHLD handler. Since it is possible for | |
1084 | children to be created without a corresponding pipe handle from which | |
1085 | to read output, we wait separately on the process handles as well as | |
1086 | the char_avail events for each process pipe. We only call | |
86143765 RS |
1087 | wait/reap_process when the process actually terminates. |
1088 | ||
1089 | To reduce the number of places in which Emacs can be hung such that | |
1090 | C-g is not able to interrupt it, we always wait on interrupt_handle | |
1091 | (which is signalled by the input thread when C-g is detected). If we | |
1092 | detect that we were woken up by C-g, we return -1 with errno set to | |
1093 | EINTR as on Unix. */ | |
6cdfb6e6 RS |
1094 | |
1095 | /* From ntterm.c */ | |
1096 | extern HANDLE keyboard_handle; | |
86143765 RS |
1097 | |
1098 | /* From w32xfns.c */ | |
1099 | extern HANDLE interrupt_handle; | |
1100 | ||
6cdfb6e6 RS |
1101 | /* From process.c */ |
1102 | extern int proc_buffered_char[]; | |
1103 | ||
177c0ea7 | 1104 | int |
22759c72 KH |
1105 | sys_select (int nfds, SELECT_TYPE *rfds, SELECT_TYPE *wfds, SELECT_TYPE *efds, |
1106 | EMACS_TIME *timeout) | |
6cdfb6e6 RS |
1107 | { |
1108 | SELECT_TYPE orfds; | |
b2fc9f3d GV |
1109 | DWORD timeout_ms, start_time; |
1110 | int i, nh, nc, nr; | |
6cdfb6e6 | 1111 | DWORD active; |
b2fc9f3d GV |
1112 | child_process *cp, *cps[MAX_CHILDREN]; |
1113 | HANDLE wait_hnd[MAXDESC + MAX_CHILDREN]; | |
c519b5e1 | 1114 | int fdindex[MAXDESC]; /* mapping from wait handles back to descriptors */ |
177c0ea7 | 1115 | |
b2fc9f3d GV |
1116 | timeout_ms = timeout ? (timeout->tv_sec * 1000 + timeout->tv_usec / 1000) : INFINITE; |
1117 | ||
6cdfb6e6 | 1118 | /* If the descriptor sets are NULL but timeout isn't, then just Sleep. */ |
177c0ea7 | 1119 | if (rfds == NULL && wfds == NULL && efds == NULL && timeout != NULL) |
6cdfb6e6 | 1120 | { |
b2fc9f3d | 1121 | Sleep (timeout_ms); |
6cdfb6e6 RS |
1122 | return 0; |
1123 | } | |
1124 | ||
1125 | /* Otherwise, we only handle rfds, so fail otherwise. */ | |
1126 | if (rfds == NULL || wfds != NULL || efds != NULL) | |
1127 | { | |
1128 | errno = EINVAL; | |
1129 | return -1; | |
1130 | } | |
177c0ea7 | 1131 | |
6cdfb6e6 RS |
1132 | orfds = *rfds; |
1133 | FD_ZERO (rfds); | |
1134 | nr = 0; | |
86143765 RS |
1135 | |
1136 | /* Always wait on interrupt_handle, to detect C-g (quit). */ | |
1137 | wait_hnd[0] = interrupt_handle; | |
1138 | fdindex[0] = -1; | |
177c0ea7 | 1139 | |
b2fc9f3d | 1140 | /* Build a list of pipe handles to wait on. */ |
86143765 | 1141 | nh = 1; |
6cdfb6e6 RS |
1142 | for (i = 0; i < nfds; i++) |
1143 | if (FD_ISSET (i, &orfds)) | |
1144 | { | |
1145 | if (i == 0) | |
1146 | { | |
c519b5e1 GV |
1147 | if (keyboard_handle) |
1148 | { | |
1149 | /* Handle stdin specially */ | |
1150 | wait_hnd[nh] = keyboard_handle; | |
1151 | fdindex[nh] = i; | |
1152 | nh++; | |
1153 | } | |
6cdfb6e6 RS |
1154 | |
1155 | /* Check for any emacs-generated input in the queue since | |
1156 | it won't be detected in the wait */ | |
1157 | if (detect_input_pending ()) | |
1158 | { | |
1159 | FD_SET (i, rfds); | |
c519b5e1 | 1160 | return 1; |
6cdfb6e6 RS |
1161 | } |
1162 | } | |
1163 | else | |
1164 | { | |
c519b5e1 GV |
1165 | /* Child process and socket input */ |
1166 | cp = fd_info[i].cp; | |
6cdfb6e6 RS |
1167 | if (cp) |
1168 | { | |
c519b5e1 GV |
1169 | int current_status = cp->status; |
1170 | ||
1171 | if (current_status == STATUS_READ_ACKNOWLEDGED) | |
1172 | { | |
1173 | /* Tell reader thread which file handle to use. */ | |
1174 | cp->fd = i; | |
1175 | /* Wake up the reader thread for this process */ | |
1176 | cp->status = STATUS_READ_READY; | |
1177 | if (!SetEvent (cp->char_consumed)) | |
1178 | DebPrint (("nt_select.SetEvent failed with " | |
1179 | "%lu for fd %ld\n", GetLastError (), i)); | |
1180 | } | |
1181 | ||
1182 | #ifdef CHECK_INTERLOCK | |
1183 | /* slightly crude cross-checking of interlock between threads */ | |
1184 | ||
1185 | current_status = cp->status; | |
1186 | if (WaitForSingleObject (cp->char_avail, 0) == WAIT_OBJECT_0) | |
1187 | { | |
1188 | /* char_avail has been signalled, so status (which may | |
1189 | have changed) should indicate read has completed | |
1190 | but has not been acknowledged. */ | |
1191 | current_status = cp->status; | |
b2fc9f3d GV |
1192 | if (current_status != STATUS_READ_SUCCEEDED |
1193 | && current_status != STATUS_READ_FAILED) | |
c519b5e1 GV |
1194 | DebPrint (("char_avail set, but read not completed: status %d\n", |
1195 | current_status)); | |
1196 | } | |
1197 | else | |
1198 | { | |
1199 | /* char_avail has not been signalled, so status should | |
1200 | indicate that read is in progress; small possibility | |
1201 | that read has completed but event wasn't yet signalled | |
1202 | when we tested it (because a context switch occurred | |
1203 | or if running on separate CPUs). */ | |
b2fc9f3d GV |
1204 | if (current_status != STATUS_READ_READY |
1205 | && current_status != STATUS_READ_IN_PROGRESS | |
1206 | && current_status != STATUS_READ_SUCCEEDED | |
1207 | && current_status != STATUS_READ_FAILED) | |
c519b5e1 GV |
1208 | DebPrint (("char_avail reset, but read status is bad: %d\n", |
1209 | current_status)); | |
1210 | } | |
1211 | #endif | |
1212 | wait_hnd[nh] = cp->char_avail; | |
1213 | fdindex[nh] = i; | |
1214 | if (!wait_hnd[nh]) abort (); | |
1215 | nh++; | |
6cdfb6e6 RS |
1216 | #ifdef FULL_DEBUG |
1217 | DebPrint (("select waiting on child %d fd %d\n", | |
1218 | cp-child_procs, i)); | |
1219 | #endif | |
6cdfb6e6 RS |
1220 | } |
1221 | else | |
1222 | { | |
c519b5e1 | 1223 | /* Unable to find something to wait on for this fd, skip */ |
ef79fbba GV |
1224 | |
1225 | /* Note that this is not a fatal error, and can in fact | |
1226 | happen in unusual circumstances. Specifically, if | |
1227 | sys_spawnve fails, eg. because the program doesn't | |
1228 | exist, and debug-on-error is t so Fsignal invokes a | |
1229 | nested input loop, then the process output pipe is | |
1230 | still included in input_wait_mask with no child_proc | |
1231 | associated with it. (It is removed when the debugger | |
1232 | exits the nested input loop and the error is thrown.) */ | |
1233 | ||
c519b5e1 | 1234 | DebPrint (("sys_select: fd %ld is invalid! ignoring\n", i)); |
6cdfb6e6 RS |
1235 | } |
1236 | } | |
1237 | } | |
b2fc9f3d GV |
1238 | |
1239 | count_children: | |
1240 | /* Add handles of child processes. */ | |
1241 | nc = 0; | |
1242 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) | |
ef79fbba GV |
1243 | /* Some child_procs might be sockets; ignore them. Also some |
1244 | children may have died already, but we haven't finished reading | |
1245 | the process output; ignore them too. */ | |
1246 | if (CHILD_ACTIVE (cp) && cp->procinfo.hProcess | |
1247 | && (cp->fd < 0 | |
1248 | || (fd_info[cp->fd].flags & FILE_SEND_SIGCHLD) == 0 | |
1249 | || (fd_info[cp->fd].flags & FILE_AT_EOF) != 0) | |
1250 | ) | |
b2fc9f3d GV |
1251 | { |
1252 | wait_hnd[nh + nc] = cp->procinfo.hProcess; | |
1253 | cps[nc] = cp; | |
1254 | nc++; | |
1255 | } | |
177c0ea7 | 1256 | |
6cdfb6e6 | 1257 | /* Nothing to look for, so we didn't find anything */ |
177c0ea7 | 1258 | if (nh + nc == 0) |
6cdfb6e6 | 1259 | { |
22759c72 | 1260 | if (timeout) |
b2fc9f3d | 1261 | Sleep (timeout_ms); |
6cdfb6e6 RS |
1262 | return 0; |
1263 | } | |
177c0ea7 | 1264 | |
b2fc9f3d | 1265 | start_time = GetTickCount (); |
8b031dcc AI |
1266 | |
1267 | /* Wait for input or child death to be signalled. If user input is | |
1268 | allowed, then also accept window messages. */ | |
1269 | if (FD_ISSET (0, &orfds)) | |
1270 | active = MsgWaitForMultipleObjects (nh + nc, wait_hnd, FALSE, timeout_ms, | |
1271 | QS_ALLINPUT); | |
1272 | else | |
1273 | active = WaitForMultipleObjects (nh + nc, wait_hnd, FALSE, timeout_ms); | |
c519b5e1 | 1274 | |
6cdfb6e6 RS |
1275 | if (active == WAIT_FAILED) |
1276 | { | |
1277 | DebPrint (("select.WaitForMultipleObjects (%d, %lu) failed with %lu\n", | |
b2fc9f3d | 1278 | nh + nc, timeout_ms, GetLastError ())); |
d64b707c | 1279 | /* don't return EBADF - this causes wait_reading_process_output to |
c519b5e1 GV |
1280 | abort; WAIT_FAILED is returned when single-stepping under |
1281 | Windows 95 after switching thread focus in debugger, and | |
1282 | possibly at other times. */ | |
1283 | errno = EINTR; | |
6cdfb6e6 RS |
1284 | return -1; |
1285 | } | |
1286 | else if (active == WAIT_TIMEOUT) | |
1287 | { | |
1288 | return 0; | |
1289 | } | |
b2fc9f3d GV |
1290 | else if (active >= WAIT_OBJECT_0 |
1291 | && active < WAIT_OBJECT_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
1292 | { |
1293 | active -= WAIT_OBJECT_0; | |
1294 | } | |
b2fc9f3d GV |
1295 | else if (active >= WAIT_ABANDONED_0 |
1296 | && active < WAIT_ABANDONED_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
1297 | { |
1298 | active -= WAIT_ABANDONED_0; | |
1299 | } | |
b2fc9f3d GV |
1300 | else |
1301 | abort (); | |
6cdfb6e6 | 1302 | |
c519b5e1 GV |
1303 | /* Loop over all handles after active (now officially documented as |
1304 | being the first signalled handle in the array). We do this to | |
1305 | ensure fairness, so that all channels with data available will be | |
1306 | processed - otherwise higher numbered channels could be starved. */ | |
1307 | do | |
6cdfb6e6 | 1308 | { |
8b031dcc AI |
1309 | if (active == nh + nc) |
1310 | { | |
1311 | /* There are messages in the lisp thread's queue; we must | |
1312 | drain the queue now to ensure they are processed promptly, | |
1313 | because if we don't do so, we will not be woken again until | |
1314 | further messages arrive. | |
1315 | ||
1316 | NB. If ever we allow window message procedures to callback | |
1317 | into lisp, we will need to ensure messages are dispatched | |
1318 | at a safe time for lisp code to be run (*), and we may also | |
1319 | want to provide some hooks in the dispatch loop to cater | |
1320 | for modeless dialogs created by lisp (ie. to register | |
1321 | window handles to pass to IsDialogMessage). | |
1322 | ||
1323 | (*) Note that MsgWaitForMultipleObjects above is an | |
1324 | internal dispatch point for messages that are sent to | |
1325 | windows created by this thread. */ | |
1326 | drain_message_queue (); | |
1327 | } | |
1328 | else if (active >= nh) | |
b2fc9f3d GV |
1329 | { |
1330 | cp = cps[active - nh]; | |
ef79fbba GV |
1331 | |
1332 | /* We cannot always signal SIGCHLD immediately; if we have not | |
1333 | finished reading the process output, we must delay sending | |
1334 | SIGCHLD until we do. */ | |
1335 | ||
1336 | if (cp->fd >= 0 && (fd_info[cp->fd].flags & FILE_AT_EOF) == 0) | |
1337 | fd_info[cp->fd].flags |= FILE_SEND_SIGCHLD; | |
b2fc9f3d | 1338 | /* SIG_DFL for SIGCHLD is ignore */ |
ef79fbba GV |
1339 | else if (sig_handlers[SIGCHLD] != SIG_DFL && |
1340 | sig_handlers[SIGCHLD] != SIG_IGN) | |
b2fc9f3d GV |
1341 | { |
1342 | #ifdef FULL_DEBUG | |
1343 | DebPrint (("select calling SIGCHLD handler for pid %d\n", | |
1344 | cp->pid)); | |
1345 | #endif | |
1346 | dead_child = cp; | |
1347 | sig_handlers[SIGCHLD] (SIGCHLD); | |
1348 | dead_child = NULL; | |
1349 | } | |
1350 | } | |
86143765 RS |
1351 | else if (fdindex[active] == -1) |
1352 | { | |
1353 | /* Quit (C-g) was detected. */ | |
1354 | errno = EINTR; | |
1355 | return -1; | |
1356 | } | |
b2fc9f3d | 1357 | else if (fdindex[active] == 0) |
c519b5e1 GV |
1358 | { |
1359 | /* Keyboard input available */ | |
1360 | FD_SET (0, rfds); | |
6cdfb6e6 | 1361 | nr++; |
c519b5e1 | 1362 | } |
6cdfb6e6 | 1363 | else |
c519b5e1 | 1364 | { |
b2fc9f3d GV |
1365 | /* must be a socket or pipe - read ahead should have |
1366 | completed, either succeeding or failing. */ | |
c519b5e1 GV |
1367 | FD_SET (fdindex[active], rfds); |
1368 | nr++; | |
c519b5e1 GV |
1369 | } |
1370 | ||
b2fc9f3d GV |
1371 | /* Even though wait_reading_process_output only reads from at most |
1372 | one channel, we must process all channels here so that we reap | |
1373 | all children that have died. */ | |
1374 | while (++active < nh + nc) | |
c519b5e1 GV |
1375 | if (WaitForSingleObject (wait_hnd[active], 0) == WAIT_OBJECT_0) |
1376 | break; | |
b2fc9f3d GV |
1377 | } while (active < nh + nc); |
1378 | ||
1379 | /* If no input has arrived and timeout hasn't expired, wait again. */ | |
1380 | if (nr == 0) | |
1381 | { | |
1382 | DWORD elapsed = GetTickCount () - start_time; | |
1383 | ||
1384 | if (timeout_ms > elapsed) /* INFINITE is MAX_UINT */ | |
1385 | { | |
1386 | if (timeout_ms != INFINITE) | |
1387 | timeout_ms -= elapsed; | |
1388 | goto count_children; | |
1389 | } | |
1390 | } | |
c519b5e1 | 1391 | |
6cdfb6e6 RS |
1392 | return nr; |
1393 | } | |
1394 | ||
c519b5e1 | 1395 | /* Substitute for certain kill () operations */ |
b2fc9f3d GV |
1396 | |
1397 | static BOOL CALLBACK | |
42c95ffb | 1398 | find_child_console (HWND hwnd, LPARAM arg) |
b2fc9f3d | 1399 | { |
42c95ffb | 1400 | child_process * cp = (child_process *) arg; |
b2fc9f3d GV |
1401 | DWORD thread_id; |
1402 | DWORD process_id; | |
1403 | ||
1404 | thread_id = GetWindowThreadProcessId (hwnd, &process_id); | |
1405 | if (process_id == cp->procinfo.dwProcessId) | |
1406 | { | |
1407 | char window_class[32]; | |
1408 | ||
1409 | GetClassName (hwnd, window_class, sizeof (window_class)); | |
1410 | if (strcmp (window_class, | |
1411 | (os_subtype == OS_WIN95) | |
1412 | ? "tty" | |
1413 | : "ConsoleWindowClass") == 0) | |
1414 | { | |
1415 | cp->hwnd = hwnd; | |
1416 | return FALSE; | |
1417 | } | |
1418 | } | |
1419 | /* keep looking */ | |
1420 | return TRUE; | |
1421 | } | |
1422 | ||
177c0ea7 | 1423 | int |
c519b5e1 | 1424 | sys_kill (int pid, int sig) |
6cdfb6e6 RS |
1425 | { |
1426 | child_process *cp; | |
c519b5e1 GV |
1427 | HANDLE proc_hand; |
1428 | int need_to_free = 0; | |
1429 | int rc = 0; | |
177c0ea7 | 1430 | |
6cdfb6e6 RS |
1431 | /* Only handle signals that will result in the process dying */ |
1432 | if (sig != SIGINT && sig != SIGKILL && sig != SIGQUIT && sig != SIGHUP) | |
1433 | { | |
1434 | errno = EINVAL; | |
1435 | return -1; | |
1436 | } | |
c519b5e1 | 1437 | |
6cdfb6e6 RS |
1438 | cp = find_child_pid (pid); |
1439 | if (cp == NULL) | |
1440 | { | |
c519b5e1 GV |
1441 | proc_hand = OpenProcess (PROCESS_TERMINATE, 0, pid); |
1442 | if (proc_hand == NULL) | |
1443 | { | |
1444 | errno = EPERM; | |
1445 | return -1; | |
1446 | } | |
1447 | need_to_free = 1; | |
1448 | } | |
1449 | else | |
1450 | { | |
1451 | proc_hand = cp->procinfo.hProcess; | |
1452 | pid = cp->procinfo.dwProcessId; | |
b2fc9f3d GV |
1453 | |
1454 | /* Try to locate console window for process. */ | |
1455 | EnumWindows (find_child_console, (LPARAM) cp); | |
6cdfb6e6 | 1456 | } |
177c0ea7 | 1457 | |
a55a5f3c | 1458 | if (sig == SIGINT || sig == SIGQUIT) |
6cdfb6e6 | 1459 | { |
b2fc9f3d GV |
1460 | if (NILP (Vw32_start_process_share_console) && cp && cp->hwnd) |
1461 | { | |
1462 | BYTE control_scan_code = (BYTE) MapVirtualKey (VK_CONTROL, 0); | |
a55a5f3c AI |
1463 | /* Fake Ctrl-C for SIGINT, and Ctrl-Break for SIGQUIT. */ |
1464 | BYTE vk_break_code = (sig == SIGINT) ? 'C' : VK_CANCEL; | |
b2fc9f3d GV |
1465 | BYTE break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0); |
1466 | HWND foreground_window; | |
1467 | ||
1468 | if (break_scan_code == 0) | |
1469 | { | |
a55a5f3c | 1470 | /* Fake Ctrl-C for SIGQUIT if we can't manage Ctrl-Break. */ |
b2fc9f3d GV |
1471 | vk_break_code = 'C'; |
1472 | break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0); | |
1473 | } | |
1474 | ||
1475 | foreground_window = GetForegroundWindow (); | |
f446016f | 1476 | if (foreground_window) |
b2fc9f3d | 1477 | { |
f446016f AI |
1478 | /* NT 5.0, and apparently also Windows 98, will not allow |
1479 | a Window to be set to foreground directly without the | |
1480 | user's involvement. The workaround is to attach | |
1481 | ourselves to the thread that owns the foreground | |
1482 | window, since that is the only thread that can set the | |
1483 | foreground window. */ | |
1484 | DWORD foreground_thread, child_thread; | |
1485 | foreground_thread = | |
1486 | GetWindowThreadProcessId (foreground_window, NULL); | |
1487 | if (foreground_thread == GetCurrentThreadId () | |
1488 | || !AttachThreadInput (GetCurrentThreadId (), | |
1489 | foreground_thread, TRUE)) | |
1490 | foreground_thread = 0; | |
1491 | ||
1492 | child_thread = GetWindowThreadProcessId (cp->hwnd, NULL); | |
1493 | if (child_thread == GetCurrentThreadId () | |
1494 | || !AttachThreadInput (GetCurrentThreadId (), | |
1495 | child_thread, TRUE)) | |
1496 | child_thread = 0; | |
1497 | ||
1498 | /* Set the foreground window to the child. */ | |
1499 | if (SetForegroundWindow (cp->hwnd)) | |
1500 | { | |
1501 | /* Generate keystrokes as if user had typed Ctrl-Break or | |
1502 | Ctrl-C. */ | |
1503 | keybd_event (VK_CONTROL, control_scan_code, 0, 0); | |
1504 | keybd_event (vk_break_code, break_scan_code, | |
1505 | (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY), 0); | |
1506 | keybd_event (vk_break_code, break_scan_code, | |
1507 | (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY) | |
1508 | | KEYEVENTF_KEYUP, 0); | |
1509 | keybd_event (VK_CONTROL, control_scan_code, | |
1510 | KEYEVENTF_KEYUP, 0); | |
1511 | ||
1512 | /* Sleep for a bit to give time for Emacs frame to respond | |
1513 | to focus change events (if Emacs was active app). */ | |
1514 | Sleep (100); | |
1515 | ||
1516 | SetForegroundWindow (foreground_window); | |
1517 | } | |
1518 | /* Detach from the foreground and child threads now that | |
1519 | the foreground switching is over. */ | |
1520 | if (foreground_thread) | |
1521 | AttachThreadInput (GetCurrentThreadId (), | |
1522 | foreground_thread, FALSE); | |
1523 | if (child_thread) | |
1524 | AttachThreadInput (GetCurrentThreadId (), | |
1525 | child_thread, FALSE); | |
1526 | } | |
1527 | } | |
c519b5e1 | 1528 | /* Ctrl-Break is NT equivalent of SIGINT. */ |
b2fc9f3d | 1529 | else if (!GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, pid)) |
6cdfb6e6 | 1530 | { |
c519b5e1 | 1531 | DebPrint (("sys_kill.GenerateConsoleCtrlEvent return %d " |
6cdfb6e6 RS |
1532 | "for pid %lu\n", GetLastError (), pid)); |
1533 | errno = EINVAL; | |
c519b5e1 | 1534 | rc = -1; |
80874ef7 | 1535 | } |
6cdfb6e6 RS |
1536 | } |
1537 | else | |
1538 | { | |
b2fc9f3d GV |
1539 | if (NILP (Vw32_start_process_share_console) && cp && cp->hwnd) |
1540 | { | |
1541 | #if 1 | |
1542 | if (os_subtype == OS_WIN95) | |
1543 | { | |
1544 | /* | |
1545 | Another possibility is to try terminating the VDM out-right by | |
1546 | calling the Shell VxD (id 0x17) V86 interface, function #4 | |
1547 | "SHELL_Destroy_VM", ie. | |
1548 | ||
1549 | mov edx,4 | |
1550 | mov ebx,vm_handle | |
1551 | call shellapi | |
1552 | ||
1553 | First need to determine the current VM handle, and then arrange for | |
1554 | the shellapi call to be made from the system vm (by using | |
1555 | Switch_VM_and_callback). | |
1556 | ||
1557 | Could try to invoke DestroyVM through CallVxD. | |
1558 | ||
1559 | */ | |
ef79fbba GV |
1560 | #if 0 |
1561 | /* On Win95, posting WM_QUIT causes the 16-bit subsystem | |
1562 | to hang when cmdproxy is used in conjunction with | |
1563 | command.com for an interactive shell. Posting | |
1564 | WM_CLOSE pops up a dialog that, when Yes is selected, | |
1565 | does the same thing. TerminateProcess is also less | |
1566 | than ideal in that subprocesses tend to stick around | |
1567 | until the machine is shutdown, but at least it | |
1568 | doesn't freeze the 16-bit subsystem. */ | |
b2fc9f3d | 1569 | PostMessage (cp->hwnd, WM_QUIT, 0xff, 0); |
ef79fbba GV |
1570 | #endif |
1571 | if (!TerminateProcess (proc_hand, 0xff)) | |
1572 | { | |
1573 | DebPrint (("sys_kill.TerminateProcess returned %d " | |
1574 | "for pid %lu\n", GetLastError (), pid)); | |
1575 | errno = EINVAL; | |
1576 | rc = -1; | |
1577 | } | |
b2fc9f3d GV |
1578 | } |
1579 | else | |
1580 | #endif | |
1581 | PostMessage (cp->hwnd, WM_CLOSE, 0, 0); | |
1582 | } | |
fbd6baed | 1583 | /* Kill the process. On W32 this doesn't kill child processes |
8eae7766 | 1584 | so it doesn't work very well for shells which is why it's not |
b2fc9f3d GV |
1585 | used in every case. */ |
1586 | else if (!TerminateProcess (proc_hand, 0xff)) | |
6cdfb6e6 | 1587 | { |
c519b5e1 | 1588 | DebPrint (("sys_kill.TerminateProcess returned %d " |
6cdfb6e6 RS |
1589 | "for pid %lu\n", GetLastError (), pid)); |
1590 | errno = EINVAL; | |
c519b5e1 | 1591 | rc = -1; |
6cdfb6e6 RS |
1592 | } |
1593 | } | |
c519b5e1 GV |
1594 | |
1595 | if (need_to_free) | |
1596 | CloseHandle (proc_hand); | |
1597 | ||
1598 | return rc; | |
6cdfb6e6 RS |
1599 | } |
1600 | ||
09522567 | 1601 | /* extern int report_file_error (char *, Lisp_Object); */ |
c519b5e1 GV |
1602 | |
1603 | /* The following two routines are used to manipulate stdin, stdout, and | |
1604 | stderr of our child processes. | |
1605 | ||
1606 | Assuming that in, out, and err are *not* inheritable, we make them | |
1607 | stdin, stdout, and stderr of the child as follows: | |
1608 | ||
1609 | - Save the parent's current standard handles. | |
1610 | - Set the std handles to inheritable duplicates of the ones being passed in. | |
1611 | (Note that _get_osfhandle() is an io.h procedure that retrieves the | |
1612 | NT file handle for a crt file descriptor.) | |
1613 | - Spawn the child, which inherits in, out, and err as stdin, | |
1614 | stdout, and stderr. (see Spawnve) | |
1615 | - Close the std handles passed to the child. | |
1616 | - Reset the parent's standard handles to the saved handles. | |
1617 | (see reset_standard_handles) | |
1618 | We assume that the caller closes in, out, and err after calling us. */ | |
1619 | ||
1620 | void | |
1621 | prepare_standard_handles (int in, int out, int err, HANDLE handles[3]) | |
6cdfb6e6 | 1622 | { |
c519b5e1 GV |
1623 | HANDLE parent; |
1624 | HANDLE newstdin, newstdout, newstderr; | |
1625 | ||
1626 | parent = GetCurrentProcess (); | |
1627 | ||
1628 | handles[0] = GetStdHandle (STD_INPUT_HANDLE); | |
1629 | handles[1] = GetStdHandle (STD_OUTPUT_HANDLE); | |
1630 | handles[2] = GetStdHandle (STD_ERROR_HANDLE); | |
1631 | ||
1632 | /* make inheritable copies of the new handles */ | |
177c0ea7 | 1633 | if (!DuplicateHandle (parent, |
c519b5e1 GV |
1634 | (HANDLE) _get_osfhandle (in), |
1635 | parent, | |
177c0ea7 JB |
1636 | &newstdin, |
1637 | 0, | |
1638 | TRUE, | |
c519b5e1 GV |
1639 | DUPLICATE_SAME_ACCESS)) |
1640 | report_file_error ("Duplicating input handle for child", Qnil); | |
177c0ea7 | 1641 | |
c519b5e1 GV |
1642 | if (!DuplicateHandle (parent, |
1643 | (HANDLE) _get_osfhandle (out), | |
1644 | parent, | |
1645 | &newstdout, | |
1646 | 0, | |
1647 | TRUE, | |
1648 | DUPLICATE_SAME_ACCESS)) | |
1649 | report_file_error ("Duplicating output handle for child", Qnil); | |
177c0ea7 | 1650 | |
c519b5e1 GV |
1651 | if (!DuplicateHandle (parent, |
1652 | (HANDLE) _get_osfhandle (err), | |
1653 | parent, | |
1654 | &newstderr, | |
1655 | 0, | |
1656 | TRUE, | |
1657 | DUPLICATE_SAME_ACCESS)) | |
1658 | report_file_error ("Duplicating error handle for child", Qnil); | |
1659 | ||
1660 | /* and store them as our std handles */ | |
1661 | if (!SetStdHandle (STD_INPUT_HANDLE, newstdin)) | |
1662 | report_file_error ("Changing stdin handle", Qnil); | |
177c0ea7 | 1663 | |
c519b5e1 GV |
1664 | if (!SetStdHandle (STD_OUTPUT_HANDLE, newstdout)) |
1665 | report_file_error ("Changing stdout handle", Qnil); | |
1666 | ||
1667 | if (!SetStdHandle (STD_ERROR_HANDLE, newstderr)) | |
1668 | report_file_error ("Changing stderr handle", Qnil); | |
1669 | } | |
1670 | ||
1671 | void | |
1672 | reset_standard_handles (int in, int out, int err, HANDLE handles[3]) | |
1673 | { | |
1674 | /* close the duplicated handles passed to the child */ | |
1675 | CloseHandle (GetStdHandle (STD_INPUT_HANDLE)); | |
1676 | CloseHandle (GetStdHandle (STD_OUTPUT_HANDLE)); | |
1677 | CloseHandle (GetStdHandle (STD_ERROR_HANDLE)); | |
1678 | ||
1679 | /* now restore parent's saved std handles */ | |
1680 | SetStdHandle (STD_INPUT_HANDLE, handles[0]); | |
1681 | SetStdHandle (STD_OUTPUT_HANDLE, handles[1]); | |
1682 | SetStdHandle (STD_ERROR_HANDLE, handles[2]); | |
6cdfb6e6 | 1683 | } |
c519b5e1 | 1684 | |
b2fc9f3d GV |
1685 | void |
1686 | set_process_dir (char * dir) | |
1687 | { | |
1688 | process_dir = dir; | |
1689 | } | |
1690 | ||
a11e68d0 RS |
1691 | #ifdef HAVE_SOCKETS |
1692 | ||
1693 | /* To avoid problems with winsock implementations that work over dial-up | |
1694 | connections causing or requiring a connection to exist while Emacs is | |
1695 | running, Emacs no longer automatically loads winsock on startup if it | |
1696 | is present. Instead, it will be loaded when open-network-stream is | |
1697 | first called. | |
1698 | ||
1699 | To allow full control over when winsock is loaded, we provide these | |
1700 | two functions to dynamically load and unload winsock. This allows | |
1701 | dial-up users to only be connected when they actually need to use | |
1702 | socket services. */ | |
1703 | ||
1704 | /* From nt.c */ | |
1705 | extern HANDLE winsock_lib; | |
1706 | extern BOOL term_winsock (void); | |
1707 | extern BOOL init_winsock (int load_now); | |
1708 | ||
1709 | extern Lisp_Object Vsystem_name; | |
1710 | ||
fbd6baed | 1711 | DEFUN ("w32-has-winsock", Fw32_has_winsock, Sw32_has_winsock, 0, 1, 0, |
33f09670 JR |
1712 | doc: /* Test for presence of the Windows socket library `winsock'. |
1713 | Returns non-nil if winsock support is present, nil otherwise. | |
1714 | ||
1715 | If the optional argument LOAD-NOW is non-nil, the winsock library is | |
1716 | also loaded immediately if not already loaded. If winsock is loaded, | |
1717 | the winsock local hostname is returned (since this may be different from | |
1718 | the value of `system-name' and should supplant it), otherwise t is | |
1719 | returned to indicate winsock support is present. */) | |
a11e68d0 RS |
1720 | (load_now) |
1721 | Lisp_Object load_now; | |
1722 | { | |
1723 | int have_winsock; | |
1724 | ||
1725 | have_winsock = init_winsock (!NILP (load_now)); | |
1726 | if (have_winsock) | |
1727 | { | |
1728 | if (winsock_lib != NULL) | |
1729 | { | |
1730 | /* Return new value for system-name. The best way to do this | |
1731 | is to call init_system_name, saving and restoring the | |
1732 | original value to avoid side-effects. */ | |
1733 | Lisp_Object orig_hostname = Vsystem_name; | |
1734 | Lisp_Object hostname; | |
1735 | ||
1736 | init_system_name (); | |
1737 | hostname = Vsystem_name; | |
1738 | Vsystem_name = orig_hostname; | |
1739 | return hostname; | |
1740 | } | |
1741 | return Qt; | |
1742 | } | |
1743 | return Qnil; | |
1744 | } | |
1745 | ||
fbd6baed | 1746 | DEFUN ("w32-unload-winsock", Fw32_unload_winsock, Sw32_unload_winsock, |
a11e68d0 | 1747 | 0, 0, 0, |
33f09670 JR |
1748 | doc: /* Unload the Windows socket library `winsock' if loaded. |
1749 | This is provided to allow dial-up socket connections to be disconnected | |
1750 | when no longer needed. Returns nil without unloading winsock if any | |
1751 | socket connections still exist. */) | |
a11e68d0 RS |
1752 | () |
1753 | { | |
1754 | return term_winsock () ? Qt : Qnil; | |
1755 | } | |
1756 | ||
1757 | #endif /* HAVE_SOCKETS */ | |
1758 | ||
93fdf2f8 | 1759 | \f |
b2fc9f3d GV |
1760 | /* Some miscellaneous functions that are Windows specific, but not GUI |
1761 | specific (ie. are applicable in terminal or batch mode as well). */ | |
1762 | ||
1763 | /* lifted from fileio.c */ | |
1764 | #define CORRECT_DIR_SEPS(s) \ | |
1765 | do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \ | |
1766 | else unixtodos_filename (s); \ | |
1767 | } while (0) | |
1768 | ||
1769 | DEFUN ("w32-short-file-name", Fw32_short_file_name, Sw32_short_file_name, 1, 1, 0, | |
33f09670 JR |
1770 | doc: /* Return the short file name version (8.3) of the full path of FILENAME. |
1771 | If FILENAME does not exist, return nil. | |
1772 | All path elements in FILENAME are converted to their short names. */) | |
b2fc9f3d GV |
1773 | (filename) |
1774 | Lisp_Object filename; | |
1775 | { | |
1776 | char shortname[MAX_PATH]; | |
1777 | ||
b7826503 | 1778 | CHECK_STRING (filename); |
b2fc9f3d GV |
1779 | |
1780 | /* first expand it. */ | |
1781 | filename = Fexpand_file_name (filename, Qnil); | |
1782 | ||
1783 | /* luckily, this returns the short version of each element in the path. */ | |
d5db4077 | 1784 | if (GetShortPathName (SDATA (filename), shortname, MAX_PATH) == 0) |
b2fc9f3d GV |
1785 | return Qnil; |
1786 | ||
1787 | CORRECT_DIR_SEPS (shortname); | |
1788 | ||
1789 | return build_string (shortname); | |
1790 | } | |
1791 | ||
1792 | ||
1793 | DEFUN ("w32-long-file-name", Fw32_long_file_name, Sw32_long_file_name, | |
1794 | 1, 1, 0, | |
33f09670 JR |
1795 | doc: /* Return the long file name version of the full path of FILENAME. |
1796 | If FILENAME does not exist, return nil. | |
1797 | All path elements in FILENAME are converted to their long names. */) | |
b2fc9f3d GV |
1798 | (filename) |
1799 | Lisp_Object filename; | |
1800 | { | |
1801 | char longname[ MAX_PATH ]; | |
1802 | ||
b7826503 | 1803 | CHECK_STRING (filename); |
b2fc9f3d GV |
1804 | |
1805 | /* first expand it. */ | |
1806 | filename = Fexpand_file_name (filename, Qnil); | |
1807 | ||
d5db4077 | 1808 | if (!w32_get_long_filename (SDATA (filename), longname, MAX_PATH)) |
b2fc9f3d GV |
1809 | return Qnil; |
1810 | ||
1811 | CORRECT_DIR_SEPS (longname); | |
1812 | ||
1813 | return build_string (longname); | |
1814 | } | |
1815 | ||
33f09670 JR |
1816 | DEFUN ("w32-set-process-priority", Fw32_set_process_priority, |
1817 | Sw32_set_process_priority, 2, 2, 0, | |
1818 | doc: /* Set the priority of PROCESS to PRIORITY. | |
1819 | If PROCESS is nil, the priority of Emacs is changed, otherwise the | |
1820 | priority of the process whose pid is PROCESS is changed. | |
1821 | PRIORITY should be one of the symbols high, normal, or low; | |
1822 | any other symbol will be interpreted as normal. | |
1823 | ||
1824 | If successful, the return value is t, otherwise nil. */) | |
b2fc9f3d GV |
1825 | (process, priority) |
1826 | Lisp_Object process, priority; | |
1827 | { | |
1828 | HANDLE proc_handle = GetCurrentProcess (); | |
1829 | DWORD priority_class = NORMAL_PRIORITY_CLASS; | |
1830 | Lisp_Object result = Qnil; | |
1831 | ||
b7826503 | 1832 | CHECK_SYMBOL (priority); |
b2fc9f3d GV |
1833 | |
1834 | if (!NILP (process)) | |
1835 | { | |
1836 | DWORD pid; | |
1837 | child_process *cp; | |
1838 | ||
b7826503 | 1839 | CHECK_NUMBER (process); |
b2fc9f3d GV |
1840 | |
1841 | /* Allow pid to be an internally generated one, or one obtained | |
1842 | externally. This is necessary because real pids on Win95 are | |
1843 | negative. */ | |
1844 | ||
1845 | pid = XINT (process); | |
1846 | cp = find_child_pid (pid); | |
1847 | if (cp != NULL) | |
1848 | pid = cp->procinfo.dwProcessId; | |
1849 | ||
1850 | proc_handle = OpenProcess (PROCESS_SET_INFORMATION, FALSE, pid); | |
1851 | } | |
1852 | ||
1853 | if (EQ (priority, Qhigh)) | |
1854 | priority_class = HIGH_PRIORITY_CLASS; | |
1855 | else if (EQ (priority, Qlow)) | |
1856 | priority_class = IDLE_PRIORITY_CLASS; | |
1857 | ||
1858 | if (proc_handle != NULL) | |
1859 | { | |
1860 | if (SetPriorityClass (proc_handle, priority_class)) | |
1861 | result = Qt; | |
1862 | if (!NILP (process)) | |
1863 | CloseHandle (proc_handle); | |
1864 | } | |
1865 | ||
1866 | return result; | |
1867 | } | |
1868 | ||
d613418b EZ |
1869 | #ifdef HAVE_LANGINFO_CODESET |
1870 | /* Emulation of nl_langinfo. Used in fns.c:Flocale_info. */ | |
1871 | char *nl_langinfo (nl_item item) | |
1872 | { | |
1873 | /* Conversion of Posix item numbers to their Windows equivalents. */ | |
1874 | static const LCTYPE w32item[] = { | |
1875 | LOCALE_IDEFAULTANSICODEPAGE, | |
1876 | LOCALE_SDAYNAME1, LOCALE_SDAYNAME2, LOCALE_SDAYNAME3, | |
1877 | LOCALE_SDAYNAME4, LOCALE_SDAYNAME5, LOCALE_SDAYNAME6, LOCALE_SDAYNAME7, | |
1878 | LOCALE_SMONTHNAME1, LOCALE_SMONTHNAME2, LOCALE_SMONTHNAME3, | |
1879 | LOCALE_SMONTHNAME4, LOCALE_SMONTHNAME5, LOCALE_SMONTHNAME6, | |
1880 | LOCALE_SMONTHNAME7, LOCALE_SMONTHNAME8, LOCALE_SMONTHNAME9, | |
1881 | LOCALE_SMONTHNAME10, LOCALE_SMONTHNAME11, LOCALE_SMONTHNAME12 | |
1882 | }; | |
1883 | ||
1884 | static char *nl_langinfo_buf = NULL; | |
1885 | static int nl_langinfo_len = 0; | |
1886 | ||
1887 | if (nl_langinfo_len <= 0) | |
1888 | nl_langinfo_buf = xmalloc (nl_langinfo_len = 1); | |
1889 | ||
1890 | if (item < 0 || item >= _NL_NUM) | |
1891 | nl_langinfo_buf[0] = 0; | |
1892 | else | |
1893 | { | |
1894 | LCID cloc = GetThreadLocale (); | |
1895 | int need_len = GetLocaleInfo (cloc, w32item[item] | LOCALE_USE_CP_ACP, | |
1896 | NULL, 0); | |
1897 | ||
1898 | if (need_len <= 0) | |
1899 | nl_langinfo_buf[0] = 0; | |
1900 | else | |
1901 | { | |
1902 | if (item == CODESET) | |
1903 | { | |
1904 | need_len += 2; /* for the "cp" prefix */ | |
1905 | if (need_len < 8) /* for the case we call GetACP */ | |
1906 | need_len = 8; | |
1907 | } | |
1908 | if (nl_langinfo_len <= need_len) | |
1909 | nl_langinfo_buf = xrealloc (nl_langinfo_buf, | |
1910 | nl_langinfo_len = need_len); | |
1911 | if (!GetLocaleInfo (cloc, w32item[item] | LOCALE_USE_CP_ACP, | |
1912 | nl_langinfo_buf, nl_langinfo_len)) | |
1913 | nl_langinfo_buf[0] = 0; | |
1914 | else if (item == CODESET) | |
1915 | { | |
1916 | if (strcmp (nl_langinfo_buf, "0") == 0 /* CP_ACP */ | |
1917 | || strcmp (nl_langinfo_buf, "1") == 0) /* CP_OEMCP */ | |
1918 | sprintf (nl_langinfo_buf, "cp%u", GetACP ()); | |
1919 | else | |
1920 | { | |
1921 | memmove (nl_langinfo_buf + 2, nl_langinfo_buf, | |
1922 | strlen (nl_langinfo_buf) + 1); | |
1923 | nl_langinfo_buf[0] = 'c'; | |
1924 | nl_langinfo_buf[1] = 'p'; | |
1925 | } | |
1926 | } | |
1927 | } | |
1928 | } | |
1929 | return nl_langinfo_buf; | |
1930 | } | |
1931 | #endif /* HAVE_LANGINFO_CODESET */ | |
b2fc9f3d | 1932 | |
33f09670 JR |
1933 | DEFUN ("w32-get-locale-info", Fw32_get_locale_info, |
1934 | Sw32_get_locale_info, 1, 2, 0, | |
1935 | doc: /* Return information about the Windows locale LCID. | |
1936 | By default, return a three letter locale code which encodes the default | |
1937 | language as the first two characters, and the country or regionial variant | |
1938 | as the third letter. For example, ENU refers to `English (United States)', | |
1939 | while ENC means `English (Canadian)'. | |
1940 | ||
1941 | If the optional argument LONGFORM is t, the long form of the locale | |
1942 | name is returned, e.g. `English (United States)' instead; if LONGFORM | |
1943 | is a number, it is interpreted as an LCTYPE constant and the corresponding | |
1944 | locale information is returned. | |
1945 | ||
1946 | If LCID (a 16-bit number) is not a valid locale, the result is nil. */) | |
b2fc9f3d GV |
1947 | (lcid, longform) |
1948 | Lisp_Object lcid, longform; | |
1949 | { | |
1950 | int got_abbrev; | |
1951 | int got_full; | |
1952 | char abbrev_name[32] = { 0 }; | |
1953 | char full_name[256] = { 0 }; | |
1954 | ||
b7826503 | 1955 | CHECK_NUMBER (lcid); |
b2fc9f3d GV |
1956 | |
1957 | if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED)) | |
1958 | return Qnil; | |
1959 | ||
1960 | if (NILP (longform)) | |
1961 | { | |
1962 | got_abbrev = GetLocaleInfo (XINT (lcid), | |
1963 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
1964 | abbrev_name, sizeof (abbrev_name)); | |
1965 | if (got_abbrev) | |
1966 | return build_string (abbrev_name); | |
1967 | } | |
0eaf5926 | 1968 | else if (EQ (longform, Qt)) |
b2fc9f3d GV |
1969 | { |
1970 | got_full = GetLocaleInfo (XINT (lcid), | |
1971 | LOCALE_SLANGUAGE | LOCALE_USE_CP_ACP, | |
1972 | full_name, sizeof (full_name)); | |
1973 | if (got_full) | |
1974 | return build_string (full_name); | |
1975 | } | |
0eaf5926 GV |
1976 | else if (NUMBERP (longform)) |
1977 | { | |
1978 | got_full = GetLocaleInfo (XINT (lcid), | |
1979 | XINT (longform), | |
1980 | full_name, sizeof (full_name)); | |
1981 | if (got_full) | |
1982 | return make_unibyte_string (full_name, got_full); | |
1983 | } | |
b2fc9f3d GV |
1984 | |
1985 | return Qnil; | |
1986 | } | |
1987 | ||
1988 | ||
33f09670 JR |
1989 | DEFUN ("w32-get-current-locale-id", Fw32_get_current_locale_id, |
1990 | Sw32_get_current_locale_id, 0, 0, 0, | |
1991 | doc: /* Return Windows locale id for current locale setting. | |
1992 | This is a numerical value; use `w32-get-locale-info' to convert to a | |
1993 | human-readable form. */) | |
b2fc9f3d GV |
1994 | () |
1995 | { | |
1996 | return make_number (GetThreadLocale ()); | |
1997 | } | |
1998 | ||
ef79fbba GV |
1999 | DWORD int_from_hex (char * s) |
2000 | { | |
2001 | DWORD val = 0; | |
2002 | static char hex[] = "0123456789abcdefABCDEF"; | |
2003 | char * p; | |
2004 | ||
2005 | while (*s && (p = strchr(hex, *s)) != NULL) | |
2006 | { | |
2007 | unsigned digit = p - hex; | |
2008 | if (digit > 15) | |
2009 | digit -= 6; | |
2010 | val = val * 16 + digit; | |
2011 | s++; | |
2012 | } | |
2013 | return val; | |
2014 | } | |
2015 | ||
2016 | /* We need to build a global list, since the EnumSystemLocale callback | |
2017 | function isn't given a context pointer. */ | |
2018 | Lisp_Object Vw32_valid_locale_ids; | |
2019 | ||
2020 | BOOL CALLBACK enum_locale_fn (LPTSTR localeNum) | |
2021 | { | |
2022 | DWORD id = int_from_hex (localeNum); | |
2023 | Vw32_valid_locale_ids = Fcons (make_number (id), Vw32_valid_locale_ids); | |
2024 | return TRUE; | |
2025 | } | |
2026 | ||
33f09670 JR |
2027 | DEFUN ("w32-get-valid-locale-ids", Fw32_get_valid_locale_ids, |
2028 | Sw32_get_valid_locale_ids, 0, 0, 0, | |
2029 | doc: /* Return list of all valid Windows locale ids. | |
2030 | Each id is a numerical value; use `w32-get-locale-info' to convert to a | |
2031 | human-readable form. */) | |
ef79fbba GV |
2032 | () |
2033 | { | |
2034 | Vw32_valid_locale_ids = Qnil; | |
2035 | ||
2036 | EnumSystemLocales (enum_locale_fn, LCID_SUPPORTED); | |
2037 | ||
2038 | Vw32_valid_locale_ids = Fnreverse (Vw32_valid_locale_ids); | |
2039 | return Vw32_valid_locale_ids; | |
2040 | } | |
2041 | ||
b2fc9f3d GV |
2042 | |
2043 | DEFUN ("w32-get-default-locale-id", Fw32_get_default_locale_id, Sw32_get_default_locale_id, 0, 1, 0, | |
33f09670 JR |
2044 | doc: /* Return Windows locale id for default locale setting. |
2045 | By default, the system default locale setting is returned; if the optional | |
2046 | parameter USERP is non-nil, the user default locale setting is returned. | |
2047 | This is a numerical value; use `w32-get-locale-info' to convert to a | |
2048 | human-readable form. */) | |
b2fc9f3d GV |
2049 | (userp) |
2050 | Lisp_Object userp; | |
2051 | { | |
2052 | if (NILP (userp)) | |
2053 | return make_number (GetSystemDefaultLCID ()); | |
2054 | return make_number (GetUserDefaultLCID ()); | |
2055 | } | |
2056 | ||
177c0ea7 | 2057 | |
b2fc9f3d | 2058 | DEFUN ("w32-set-current-locale", Fw32_set_current_locale, Sw32_set_current_locale, 1, 1, 0, |
33f09670 JR |
2059 | doc: /* Make Windows locale LCID be the current locale setting for Emacs. |
2060 | If successful, the new locale id is returned, otherwise nil. */) | |
b2fc9f3d GV |
2061 | (lcid) |
2062 | Lisp_Object lcid; | |
2063 | { | |
b7826503 | 2064 | CHECK_NUMBER (lcid); |
b2fc9f3d GV |
2065 | |
2066 | if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED)) | |
2067 | return Qnil; | |
2068 | ||
2069 | if (!SetThreadLocale (XINT (lcid))) | |
2070 | return Qnil; | |
2071 | ||
ef79fbba GV |
2072 | /* Need to set input thread locale if present. */ |
2073 | if (dwWindowsThreadId) | |
2074 | /* Reply is not needed. */ | |
2075 | PostThreadMessage (dwWindowsThreadId, WM_EMACS_SETLOCALE, XINT (lcid), 0); | |
2076 | ||
b2fc9f3d GV |
2077 | return make_number (GetThreadLocale ()); |
2078 | } | |
2079 | ||
0eaf5926 GV |
2080 | |
2081 | /* We need to build a global list, since the EnumCodePages callback | |
2082 | function isn't given a context pointer. */ | |
2083 | Lisp_Object Vw32_valid_codepages; | |
2084 | ||
2085 | BOOL CALLBACK enum_codepage_fn (LPTSTR codepageNum) | |
2086 | { | |
2087 | DWORD id = atoi (codepageNum); | |
2088 | Vw32_valid_codepages = Fcons (make_number (id), Vw32_valid_codepages); | |
2089 | return TRUE; | |
2090 | } | |
2091 | ||
33f09670 JR |
2092 | DEFUN ("w32-get-valid-codepages", Fw32_get_valid_codepages, |
2093 | Sw32_get_valid_codepages, 0, 0, 0, | |
2094 | doc: /* Return list of all valid Windows codepages. */) | |
0eaf5926 GV |
2095 | () |
2096 | { | |
2097 | Vw32_valid_codepages = Qnil; | |
2098 | ||
2099 | EnumSystemCodePages (enum_codepage_fn, CP_SUPPORTED); | |
2100 | ||
2101 | Vw32_valid_codepages = Fnreverse (Vw32_valid_codepages); | |
2102 | return Vw32_valid_codepages; | |
2103 | } | |
2104 | ||
2105 | ||
33f09670 JR |
2106 | DEFUN ("w32-get-console-codepage", Fw32_get_console_codepage, |
2107 | Sw32_get_console_codepage, 0, 0, 0, | |
2108 | doc: /* Return current Windows codepage for console input. */) | |
0eaf5926 GV |
2109 | () |
2110 | { | |
2111 | return make_number (GetConsoleCP ()); | |
2112 | } | |
2113 | ||
177c0ea7 | 2114 | |
33f09670 JR |
2115 | DEFUN ("w32-set-console-codepage", Fw32_set_console_codepage, |
2116 | Sw32_set_console_codepage, 1, 1, 0, | |
2117 | doc: /* Make Windows codepage CP be the current codepage setting for Emacs. | |
2118 | The codepage setting affects keyboard input and display in tty mode. | |
2119 | If successful, the new CP is returned, otherwise nil. */) | |
0eaf5926 GV |
2120 | (cp) |
2121 | Lisp_Object cp; | |
2122 | { | |
b7826503 | 2123 | CHECK_NUMBER (cp); |
0eaf5926 GV |
2124 | |
2125 | if (!IsValidCodePage (XINT (cp))) | |
2126 | return Qnil; | |
2127 | ||
2128 | if (!SetConsoleCP (XINT (cp))) | |
2129 | return Qnil; | |
2130 | ||
2131 | return make_number (GetConsoleCP ()); | |
2132 | } | |
2133 | ||
2134 | ||
33f09670 JR |
2135 | DEFUN ("w32-get-console-output-codepage", Fw32_get_console_output_codepage, |
2136 | Sw32_get_console_output_codepage, 0, 0, 0, | |
2137 | doc: /* Return current Windows codepage for console output. */) | |
0eaf5926 GV |
2138 | () |
2139 | { | |
2140 | return make_number (GetConsoleOutputCP ()); | |
2141 | } | |
2142 | ||
177c0ea7 | 2143 | |
33f09670 JR |
2144 | DEFUN ("w32-set-console-output-codepage", Fw32_set_console_output_codepage, |
2145 | Sw32_set_console_output_codepage, 1, 1, 0, | |
2146 | doc: /* Make Windows codepage CP be the current codepage setting for Emacs. | |
2147 | The codepage setting affects keyboard input and display in tty mode. | |
2148 | If successful, the new CP is returned, otherwise nil. */) | |
0eaf5926 GV |
2149 | (cp) |
2150 | Lisp_Object cp; | |
2151 | { | |
b7826503 | 2152 | CHECK_NUMBER (cp); |
0eaf5926 GV |
2153 | |
2154 | if (!IsValidCodePage (XINT (cp))) | |
2155 | return Qnil; | |
2156 | ||
2157 | if (!SetConsoleOutputCP (XINT (cp))) | |
2158 | return Qnil; | |
2159 | ||
2160 | return make_number (GetConsoleOutputCP ()); | |
2161 | } | |
2162 | ||
2163 | ||
33f09670 JR |
2164 | DEFUN ("w32-get-codepage-charset", Fw32_get_codepage_charset, |
2165 | Sw32_get_codepage_charset, 1, 1, 0, | |
2166 | doc: /* Return charset of codepage CP. | |
2167 | Returns nil if the codepage is not valid. */) | |
0eaf5926 GV |
2168 | (cp) |
2169 | Lisp_Object cp; | |
2170 | { | |
2171 | CHARSETINFO info; | |
2172 | ||
b7826503 | 2173 | CHECK_NUMBER (cp); |
0eaf5926 GV |
2174 | |
2175 | if (!IsValidCodePage (XINT (cp))) | |
2176 | return Qnil; | |
2177 | ||
2178 | if (TranslateCharsetInfo ((DWORD *) XINT (cp), &info, TCI_SRCCODEPAGE)) | |
2179 | return make_number (info.ciCharset); | |
2180 | ||
2181 | return Qnil; | |
2182 | } | |
2183 | ||
2184 | ||
33f09670 JR |
2185 | DEFUN ("w32-get-valid-keyboard-layouts", Fw32_get_valid_keyboard_layouts, |
2186 | Sw32_get_valid_keyboard_layouts, 0, 0, 0, | |
2187 | doc: /* Return list of Windows keyboard languages and layouts. | |
2188 | The return value is a list of pairs of language id and layout id. */) | |
0eaf5926 GV |
2189 | () |
2190 | { | |
2191 | int num_layouts = GetKeyboardLayoutList (0, NULL); | |
2192 | HKL * layouts = (HKL *) alloca (num_layouts * sizeof (HKL)); | |
2193 | Lisp_Object obj = Qnil; | |
2194 | ||
2195 | if (GetKeyboardLayoutList (num_layouts, layouts) == num_layouts) | |
2196 | { | |
2197 | while (--num_layouts >= 0) | |
2198 | { | |
2199 | DWORD kl = (DWORD) layouts[num_layouts]; | |
2200 | ||
2201 | obj = Fcons (Fcons (make_number (kl & 0xffff), | |
2202 | make_number ((kl >> 16) & 0xffff)), | |
2203 | obj); | |
2204 | } | |
2205 | } | |
2206 | ||
2207 | return obj; | |
2208 | } | |
2209 | ||
2210 | ||
33f09670 JR |
2211 | DEFUN ("w32-get-keyboard-layout", Fw32_get_keyboard_layout, |
2212 | Sw32_get_keyboard_layout, 0, 0, 0, | |
2213 | doc: /* Return current Windows keyboard language and layout. | |
2214 | The return value is the cons of the language id and the layout id. */) | |
0eaf5926 GV |
2215 | () |
2216 | { | |
2217 | DWORD kl = (DWORD) GetKeyboardLayout (dwWindowsThreadId); | |
2218 | ||
2219 | return Fcons (make_number (kl & 0xffff), | |
2220 | make_number ((kl >> 16) & 0xffff)); | |
2221 | } | |
2222 | ||
177c0ea7 | 2223 | |
33f09670 JR |
2224 | DEFUN ("w32-set-keyboard-layout", Fw32_set_keyboard_layout, |
2225 | Sw32_set_keyboard_layout, 1, 1, 0, | |
2226 | doc: /* Make LAYOUT be the current keyboard layout for Emacs. | |
2227 | The keyboard layout setting affects interpretation of keyboard input. | |
2228 | If successful, the new layout id is returned, otherwise nil. */) | |
0eaf5926 GV |
2229 | (layout) |
2230 | Lisp_Object layout; | |
2231 | { | |
2232 | DWORD kl; | |
2233 | ||
b7826503 | 2234 | CHECK_CONS (layout); |
f4532092 AI |
2235 | CHECK_NUMBER_CAR (layout); |
2236 | CHECK_NUMBER_CDR (layout); | |
0eaf5926 | 2237 | |
8e713be6 KR |
2238 | kl = (XINT (XCAR (layout)) & 0xffff) |
2239 | | (XINT (XCDR (layout)) << 16); | |
0eaf5926 GV |
2240 | |
2241 | /* Synchronize layout with input thread. */ | |
2242 | if (dwWindowsThreadId) | |
2243 | { | |
2244 | if (PostThreadMessage (dwWindowsThreadId, WM_EMACS_SETKEYBOARDLAYOUT, | |
2245 | (WPARAM) kl, 0)) | |
2246 | { | |
2247 | MSG msg; | |
2248 | GetMessage (&msg, NULL, WM_EMACS_DONE, WM_EMACS_DONE); | |
2249 | ||
2250 | if (msg.wParam == 0) | |
2251 | return Qnil; | |
2252 | } | |
2253 | } | |
2254 | else if (!ActivateKeyboardLayout ((HKL) kl, 0)) | |
2255 | return Qnil; | |
2256 | ||
2257 | return Fw32_get_keyboard_layout (); | |
2258 | } | |
2259 | ||
b2fc9f3d | 2260 | \f |
93fdf2f8 RS |
2261 | syms_of_ntproc () |
2262 | { | |
51128692 JR |
2263 | DEFSYM (Qhigh, "high"); |
2264 | DEFSYM (Qlow, "low"); | |
b2fc9f3d | 2265 | |
a11e68d0 | 2266 | #ifdef HAVE_SOCKETS |
fbd6baed GV |
2267 | defsubr (&Sw32_has_winsock); |
2268 | defsubr (&Sw32_unload_winsock); | |
a11e68d0 | 2269 | #endif |
b2fc9f3d GV |
2270 | defsubr (&Sw32_short_file_name); |
2271 | defsubr (&Sw32_long_file_name); | |
2272 | defsubr (&Sw32_set_process_priority); | |
2273 | defsubr (&Sw32_get_locale_info); | |
2274 | defsubr (&Sw32_get_current_locale_id); | |
2275 | defsubr (&Sw32_get_default_locale_id); | |
ef79fbba | 2276 | defsubr (&Sw32_get_valid_locale_ids); |
b2fc9f3d | 2277 | defsubr (&Sw32_set_current_locale); |
a11e68d0 | 2278 | |
0eaf5926 GV |
2279 | defsubr (&Sw32_get_console_codepage); |
2280 | defsubr (&Sw32_set_console_codepage); | |
2281 | defsubr (&Sw32_get_console_output_codepage); | |
2282 | defsubr (&Sw32_set_console_output_codepage); | |
2283 | defsubr (&Sw32_get_valid_codepages); | |
2284 | defsubr (&Sw32_get_codepage_charset); | |
2285 | ||
2286 | defsubr (&Sw32_get_valid_keyboard_layouts); | |
2287 | defsubr (&Sw32_get_keyboard_layout); | |
2288 | defsubr (&Sw32_set_keyboard_layout); | |
2289 | ||
fbd6baed | 2290 | DEFVAR_LISP ("w32-quote-process-args", &Vw32_quote_process_args, |
33f09670 JR |
2291 | doc: /* Non-nil enables quoting of process arguments to ensure correct parsing. |
2292 | Because Windows does not directly pass argv arrays to child processes, | |
2293 | programs have to reconstruct the argv array by parsing the command | |
2294 | line string. For an argument to contain a space, it must be enclosed | |
2295 | in double quotes or it will be parsed as multiple arguments. | |
2296 | ||
2297 | If the value is a character, that character will be used to escape any | |
2298 | quote characters that appear, otherwise a suitable escape character | |
2299 | will be chosen based on the type of the program. */); | |
b2fc9f3d | 2300 | Vw32_quote_process_args = Qt; |
817abdf6 | 2301 | |
fbd6baed GV |
2302 | DEFVAR_LISP ("w32-start-process-show-window", |
2303 | &Vw32_start_process_show_window, | |
33f09670 JR |
2304 | doc: /* When nil, new child processes hide their windows. |
2305 | When non-nil, they show their window in the method of their choice. | |
2306 | This variable doesn't affect GUI applications, which will never be hidden. */); | |
fbd6baed | 2307 | Vw32_start_process_show_window = Qnil; |
0ecf7d36 | 2308 | |
b2fc9f3d GV |
2309 | DEFVAR_LISP ("w32-start-process-share-console", |
2310 | &Vw32_start_process_share_console, | |
33f09670 JR |
2311 | doc: /* When nil, new child processes are given a new console. |
2312 | When non-nil, they share the Emacs console; this has the limitation of | |
804d894a | 2313 | allowing only one DOS subprocess to run at a time (whether started directly |
33f09670 JR |
2314 | or indirectly by Emacs), and preventing Emacs from cleanly terminating the |
2315 | subprocess group, but may allow Emacs to interrupt a subprocess that doesn't | |
2316 | otherwise respond to interrupts from Emacs. */); | |
b2fc9f3d GV |
2317 | Vw32_start_process_share_console = Qnil; |
2318 | ||
82e7c0a9 AI |
2319 | DEFVAR_LISP ("w32-start-process-inherit-error-mode", |
2320 | &Vw32_start_process_inherit_error_mode, | |
33f09670 JR |
2321 | doc: /* When nil, new child processes revert to the default error mode. |
2322 | When non-nil, they inherit their error mode setting from Emacs, which stops | |
2323 | them blocking when trying to access unmounted drives etc. */); | |
82e7c0a9 AI |
2324 | Vw32_start_process_inherit_error_mode = Qt; |
2325 | ||
5322f50b | 2326 | DEFVAR_INT ("w32-pipe-read-delay", &w32_pipe_read_delay, |
33f09670 JR |
2327 | doc: /* Forced delay before reading subprocess output. |
2328 | This is done to improve the buffering of subprocess output, by | |
2329 | avoiding the inefficiency of frequently reading small amounts of data. | |
2330 | ||
2331 | If positive, the value is the number of milliseconds to sleep before | |
2332 | reading the subprocess output. If negative, the magnitude is the number | |
2333 | of time slices to wait (effectively boosting the priority of the child | |
2334 | process temporarily). A value of zero disables waiting entirely. */); | |
5322f50b | 2335 | w32_pipe_read_delay = 50; |
0c04091e | 2336 | |
fbd6baed | 2337 | DEFVAR_LISP ("w32-downcase-file-names", &Vw32_downcase_file_names, |
33f09670 JR |
2338 | doc: /* Non-nil means convert all-upper case file names to lower case. |
2339 | This applies when performing completions and file name expansion. | |
2340 | Note that the value of this setting also affects remote file names, | |
2341 | so you probably don't want to set to non-nil if you use case-sensitive | |
177c0ea7 | 2342 | filesystems via ange-ftp. */); |
fbd6baed | 2343 | Vw32_downcase_file_names = Qnil; |
b2fc9f3d GV |
2344 | |
2345 | #if 0 | |
2346 | DEFVAR_LISP ("w32-generate-fake-inodes", &Vw32_generate_fake_inodes, | |
33f09670 JR |
2347 | doc: /* Non-nil means attempt to fake realistic inode values. |
2348 | This works by hashing the truename of files, and should detect | |
2349 | aliasing between long and short (8.3 DOS) names, but can have | |
2350 | false positives because of hash collisions. Note that determing | |
2351 | the truename of a file can be slow. */); | |
b2fc9f3d GV |
2352 | Vw32_generate_fake_inodes = Qnil; |
2353 | #endif | |
2354 | ||
2355 | DEFVAR_LISP ("w32-get-true-file-attributes", &Vw32_get_true_file_attributes, | |
45de4a6f | 2356 | doc: /* Non-nil means determine accurate link count in `file-attributes'. |
2fa4f090 JR |
2357 | This option is only useful for files on NTFS volumes, where |
2358 | hard links are supported. The default value `local' means only do | |
2359 | this for files on local harddrives. Any other non-nil value means do | |
2360 | this even on remote and removable drives where the performance impact | |
2361 | may be noticeable even on modern hardware. */); | |
2362 | Vw32_get_true_file_attributes = Qlocal; | |
af621bc3 EZ |
2363 | |
2364 | staticpro (&Vw32_valid_locale_ids); | |
2365 | staticpro (&Vw32_valid_codepages); | |
93fdf2f8 | 2366 | } |
c519b5e1 | 2367 | /* end of ntproc.c */ |
ab5796a9 MB |
2368 | |
2369 | /* arch-tag: 23d3a34c-06d2-48a1-833b-ac7609aa5250 | |
2370 | (do not change this comment) */ |