Commit | Line | Data |
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e9e23e23 | 1 | /* Process support for GNU Emacs on the Microsoft W32 API. |
dbb70029 | 2 | Copyright (C) 1992, 1995, 1999, 2000, 2001 Free Software Foundation, Inc. |
6cdfb6e6 | 3 | |
3b7ad313 EN |
4 | This file is part of GNU Emacs. |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. | |
6cdfb6e6 RS |
20 | |
21 | Drew Bliss Oct 14, 1993 | |
22 | Adapted from alarm.c by Tim Fleehart | |
23 | */ | |
24 | ||
25 | #include <stdio.h> | |
26 | #include <stdlib.h> | |
27 | #include <errno.h> | |
28 | #include <io.h> | |
c519b5e1 | 29 | #include <fcntl.h> |
6cdfb6e6 | 30 | #include <signal.h> |
51f635c4 | 31 | #include <sys/file.h> |
6cdfb6e6 | 32 | |
c519b5e1 | 33 | /* must include CRT headers *before* config.h */ |
4838e624 PJ |
34 | |
35 | #ifdef HAVE_CONFIG_H | |
36 | #include <config.h> | |
37 | #endif | |
38 | ||
c519b5e1 GV |
39 | #undef signal |
40 | #undef wait | |
41 | #undef spawnve | |
42 | #undef select | |
43 | #undef kill | |
44 | ||
6cdfb6e6 | 45 | #include <windows.h> |
42c95ffb AI |
46 | #ifdef __GNUC__ |
47 | /* This definition is missing from mingw32 headers. */ | |
48 | extern BOOL WINAPI IsValidLocale(LCID, DWORD); | |
49 | #endif | |
6cdfb6e6 RS |
50 | |
51 | #include "lisp.h" | |
489f9371 | 52 | #include "w32.h" |
b2fc9f3d | 53 | #include "w32heap.h" |
6cdfb6e6 | 54 | #include "systime.h" |
3d7eead0 GV |
55 | #include "syswait.h" |
56 | #include "process.h" | |
e7c15bba | 57 | #include "syssignal.h" |
ef79fbba | 58 | #include "w32term.h" |
3d7eead0 | 59 | |
93fdf2f8 RS |
60 | /* Control whether spawnve quotes arguments as necessary to ensure |
61 | correct parsing by child process. Because not all uses of spawnve | |
62 | are careful about constructing argv arrays, we make this behaviour | |
63 | conditional (off by default). */ | |
fbd6baed | 64 | Lisp_Object Vw32_quote_process_args; |
93fdf2f8 | 65 | |
0ecf7d36 RS |
66 | /* Control whether create_child causes the process' window to be |
67 | hidden. The default is nil. */ | |
fbd6baed | 68 | Lisp_Object Vw32_start_process_show_window; |
0ecf7d36 | 69 | |
b2fc9f3d GV |
70 | /* Control whether create_child causes the process to inherit Emacs' |
71 | console window, or be given a new one of its own. The default is | |
72 | nil, to allow multiple DOS programs to run on Win95. Having separate | |
73 | consoles also allows Emacs to cleanly terminate process groups. */ | |
74 | Lisp_Object Vw32_start_process_share_console; | |
75 | ||
82e7c0a9 AI |
76 | /* Control whether create_child cause the process to inherit Emacs' |
77 | error mode setting. The default is t, to minimize the possibility of | |
78 | subprocesses blocking when accessing unmounted drives. */ | |
79 | Lisp_Object Vw32_start_process_inherit_error_mode; | |
80 | ||
817abdf6 KH |
81 | /* Time to sleep before reading from a subprocess output pipe - this |
82 | avoids the inefficiency of frequently reading small amounts of data. | |
83 | This is primarily necessary for handling DOS processes on Windows 95, | |
e9e23e23 | 84 | but is useful for W32 processes on both Windows 95 and NT as well. */ |
fbd6baed | 85 | Lisp_Object Vw32_pipe_read_delay; |
817abdf6 | 86 | |
0c04091e RS |
87 | /* Control conversion of upper case file names to lower case. |
88 | nil means no, t means yes. */ | |
fbd6baed | 89 | Lisp_Object Vw32_downcase_file_names; |
0c04091e | 90 | |
b2fc9f3d GV |
91 | /* Control whether stat() attempts to generate fake but hopefully |
92 | "accurate" inode values, by hashing the absolute truenames of files. | |
93 | This should detect aliasing between long and short names, but still | |
94 | allows the possibility of hash collisions. */ | |
95 | Lisp_Object Vw32_generate_fake_inodes; | |
96 | ||
97 | /* Control whether stat() attempts to determine file type and link count | |
98 | exactly, at the expense of slower operation. Since true hard links | |
99 | are supported on NTFS volumes, this is only relevant on NT. */ | |
100 | Lisp_Object Vw32_get_true_file_attributes; | |
101 | ||
102 | Lisp_Object Qhigh, Qlow; | |
817abdf6 | 103 | |
6cdfb6e6 | 104 | #ifdef EMACSDEBUG |
c519b5e1 | 105 | void _DebPrint (const char *fmt, ...) |
6cdfb6e6 | 106 | { |
c519b5e1 | 107 | char buf[1024]; |
6cdfb6e6 RS |
108 | va_list args; |
109 | ||
110 | va_start (args, fmt); | |
111 | vsprintf (buf, fmt, args); | |
112 | va_end (args); | |
113 | OutputDebugString (buf); | |
114 | } | |
115 | #endif | |
116 | ||
c519b5e1 | 117 | typedef void (_CALLBACK_ *signal_handler)(int); |
6cdfb6e6 RS |
118 | |
119 | /* Signal handlers...SIG_DFL == 0 so this is initialized correctly. */ | |
120 | static signal_handler sig_handlers[NSIG]; | |
121 | ||
122 | /* Fake signal implementation to record the SIGCHLD handler. */ | |
123 | signal_handler | |
c519b5e1 | 124 | sys_signal (int sig, signal_handler handler) |
6cdfb6e6 RS |
125 | { |
126 | signal_handler old; | |
127 | ||
128 | if (sig != SIGCHLD) | |
129 | { | |
130 | errno = EINVAL; | |
131 | return SIG_ERR; | |
132 | } | |
133 | old = sig_handlers[sig]; | |
134 | sig_handlers[sig] = handler; | |
135 | return old; | |
136 | } | |
137 | ||
c519b5e1 GV |
138 | /* Defined in <process.h> which conflicts with the local copy */ |
139 | #define _P_NOWAIT 1 | |
140 | ||
141 | /* Child process management list. */ | |
142 | int child_proc_count = 0; | |
143 | child_process child_procs[ MAX_CHILDREN ]; | |
144 | child_process *dead_child = NULL; | |
145 | ||
146 | DWORD WINAPI reader_thread (void *arg); | |
147 | ||
6cdfb6e6 | 148 | /* Find an unused process slot. */ |
c519b5e1 | 149 | child_process * |
6cdfb6e6 RS |
150 | new_child (void) |
151 | { | |
152 | child_process *cp; | |
c519b5e1 | 153 | DWORD id; |
6cdfb6e6 RS |
154 | |
155 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) | |
156 | if (!CHILD_ACTIVE (cp)) | |
c519b5e1 GV |
157 | goto Initialise; |
158 | if (child_proc_count == MAX_CHILDREN) | |
159 | return NULL; | |
160 | cp = &child_procs[child_proc_count++]; | |
161 | ||
162 | Initialise: | |
163 | memset (cp, 0, sizeof(*cp)); | |
164 | cp->fd = -1; | |
165 | cp->pid = -1; | |
166 | cp->procinfo.hProcess = NULL; | |
167 | cp->status = STATUS_READ_ERROR; | |
168 | ||
169 | /* use manual reset event so that select() will function properly */ | |
170 | cp->char_avail = CreateEvent (NULL, TRUE, FALSE, NULL); | |
171 | if (cp->char_avail) | |
172 | { | |
173 | cp->char_consumed = CreateEvent (NULL, FALSE, FALSE, NULL); | |
174 | if (cp->char_consumed) | |
175 | { | |
176 | cp->thrd = CreateThread (NULL, 1024, reader_thread, cp, 0, &id); | |
177 | if (cp->thrd) | |
178 | return cp; | |
179 | } | |
180 | } | |
181 | delete_child (cp); | |
182 | return NULL; | |
183 | } | |
184 | ||
185 | void | |
186 | delete_child (child_process *cp) | |
187 | { | |
188 | int i; | |
189 | ||
190 | /* Should not be deleting a child that is still needed. */ | |
191 | for (i = 0; i < MAXDESC; i++) | |
192 | if (fd_info[i].cp == cp) | |
193 | abort (); | |
194 | ||
195 | if (!CHILD_ACTIVE (cp)) | |
196 | return; | |
197 | ||
198 | /* reap thread if necessary */ | |
199 | if (cp->thrd) | |
200 | { | |
201 | DWORD rc; | |
202 | ||
203 | if (GetExitCodeThread (cp->thrd, &rc) && rc == STILL_ACTIVE) | |
204 | { | |
205 | /* let the thread exit cleanly if possible */ | |
206 | cp->status = STATUS_READ_ERROR; | |
207 | SetEvent (cp->char_consumed); | |
208 | if (WaitForSingleObject (cp->thrd, 1000) != WAIT_OBJECT_0) | |
209 | { | |
210 | DebPrint (("delete_child.WaitForSingleObject (thread) failed " | |
211 | "with %lu for fd %ld\n", GetLastError (), cp->fd)); | |
212 | TerminateThread (cp->thrd, 0); | |
213 | } | |
214 | } | |
215 | CloseHandle (cp->thrd); | |
216 | cp->thrd = NULL; | |
217 | } | |
218 | if (cp->char_avail) | |
219 | { | |
220 | CloseHandle (cp->char_avail); | |
221 | cp->char_avail = NULL; | |
222 | } | |
223 | if (cp->char_consumed) | |
224 | { | |
225 | CloseHandle (cp->char_consumed); | |
226 | cp->char_consumed = NULL; | |
227 | } | |
228 | ||
229 | /* update child_proc_count (highest numbered slot in use plus one) */ | |
230 | if (cp == child_procs + child_proc_count - 1) | |
231 | { | |
232 | for (i = child_proc_count-1; i >= 0; i--) | |
233 | if (CHILD_ACTIVE (&child_procs[i])) | |
234 | { | |
235 | child_proc_count = i + 1; | |
236 | break; | |
237 | } | |
238 | } | |
239 | if (i < 0) | |
240 | child_proc_count = 0; | |
6cdfb6e6 RS |
241 | } |
242 | ||
243 | /* Find a child by pid. */ | |
244 | static child_process * | |
245 | find_child_pid (DWORD pid) | |
246 | { | |
247 | child_process *cp; | |
c519b5e1 | 248 | |
6cdfb6e6 RS |
249 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) |
250 | if (CHILD_ACTIVE (cp) && pid == cp->pid) | |
251 | return cp; | |
252 | return NULL; | |
253 | } | |
254 | ||
6cdfb6e6 | 255 | |
c519b5e1 GV |
256 | /* Thread proc for child process and socket reader threads. Each thread |
257 | is normally blocked until woken by select() to check for input by | |
258 | reading one char. When the read completes, char_avail is signalled | |
259 | to wake up the select emulator and the thread blocks itself again. */ | |
6cdfb6e6 RS |
260 | DWORD WINAPI |
261 | reader_thread (void *arg) | |
262 | { | |
263 | child_process *cp; | |
264 | ||
265 | /* Our identity */ | |
266 | cp = (child_process *)arg; | |
267 | ||
268 | /* We have to wait for the go-ahead before we can start */ | |
b2fc9f3d GV |
269 | if (cp == NULL |
270 | || WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0) | |
c519b5e1 GV |
271 | return 1; |
272 | ||
6cdfb6e6 RS |
273 | for (;;) |
274 | { | |
c519b5e1 GV |
275 | int rc; |
276 | ||
277 | rc = _sys_read_ahead (cp->fd); | |
278 | ||
279 | /* The name char_avail is a misnomer - it really just means the | |
280 | read-ahead has completed, whether successfully or not. */ | |
6cdfb6e6 RS |
281 | if (!SetEvent (cp->char_avail)) |
282 | { | |
283 | DebPrint (("reader_thread.SetEvent failed with %lu for fd %ld\n", | |
284 | GetLastError (), cp->fd)); | |
c519b5e1 GV |
285 | return 1; |
286 | } | |
287 | ||
288 | if (rc == STATUS_READ_ERROR) | |
289 | return 1; | |
6cdfb6e6 RS |
290 | |
291 | /* If the read died, the child has died so let the thread die */ | |
c519b5e1 | 292 | if (rc == STATUS_READ_FAILED) |
6cdfb6e6 RS |
293 | break; |
294 | ||
295 | /* Wait until our input is acknowledged before reading again */ | |
296 | if (WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0) | |
297 | { | |
298 | DebPrint (("reader_thread.WaitForSingleObject failed with " | |
299 | "%lu for fd %ld\n", GetLastError (), cp->fd)); | |
300 | break; | |
301 | } | |
302 | } | |
303 | return 0; | |
304 | } | |
305 | ||
b2fc9f3d GV |
306 | /* To avoid Emacs changing directory, we just record here the directory |
307 | the new process should start in. This is set just before calling | |
308 | sys_spawnve, and is not generally valid at any other time. */ | |
309 | static char * process_dir; | |
310 | ||
6cdfb6e6 | 311 | static BOOL |
a55a5f3c | 312 | create_child (char *exe, char *cmdline, char *env, int is_gui_app, |
c519b5e1 | 313 | int * pPid, child_process *cp) |
6cdfb6e6 | 314 | { |
6cdfb6e6 RS |
315 | STARTUPINFO start; |
316 | SECURITY_ATTRIBUTES sec_attrs; | |
42c95ffb | 317 | #if 0 |
6cdfb6e6 | 318 | SECURITY_DESCRIPTOR sec_desc; |
42c95ffb | 319 | #endif |
82e7c0a9 | 320 | DWORD flags; |
b2fc9f3d | 321 | char dir[ MAXPATHLEN ]; |
6cdfb6e6 | 322 | |
c519b5e1 | 323 | if (cp == NULL) abort (); |
6cdfb6e6 RS |
324 | |
325 | memset (&start, 0, sizeof (start)); | |
326 | start.cb = sizeof (start); | |
327 | ||
58d4e829 | 328 | #ifdef HAVE_NTGUI |
a55a5f3c | 329 | if (NILP (Vw32_start_process_show_window) && !is_gui_app) |
0ecf7d36 RS |
330 | start.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW; |
331 | else | |
332 | start.dwFlags = STARTF_USESTDHANDLES; | |
58d4e829 GV |
333 | start.wShowWindow = SW_HIDE; |
334 | ||
335 | start.hStdInput = GetStdHandle (STD_INPUT_HANDLE); | |
336 | start.hStdOutput = GetStdHandle (STD_OUTPUT_HANDLE); | |
337 | start.hStdError = GetStdHandle (STD_ERROR_HANDLE); | |
338 | #endif /* HAVE_NTGUI */ | |
339 | ||
42c95ffb | 340 | #if 0 |
6cdfb6e6 RS |
341 | /* Explicitly specify no security */ |
342 | if (!InitializeSecurityDescriptor (&sec_desc, SECURITY_DESCRIPTOR_REVISION)) | |
c519b5e1 | 343 | goto EH_Fail; |
6cdfb6e6 | 344 | if (!SetSecurityDescriptorDacl (&sec_desc, TRUE, NULL, FALSE)) |
c519b5e1 | 345 | goto EH_Fail; |
42c95ffb | 346 | #endif |
6cdfb6e6 | 347 | sec_attrs.nLength = sizeof (sec_attrs); |
42c95ffb | 348 | sec_attrs.lpSecurityDescriptor = NULL /* &sec_desc */; |
6cdfb6e6 RS |
349 | sec_attrs.bInheritHandle = FALSE; |
350 | ||
b2fc9f3d GV |
351 | strcpy (dir, process_dir); |
352 | unixtodos_filename (dir); | |
82e7c0a9 AI |
353 | |
354 | flags = (!NILP (Vw32_start_process_share_console) | |
355 | ? CREATE_NEW_PROCESS_GROUP | |
356 | : CREATE_NEW_CONSOLE); | |
357 | if (NILP (Vw32_start_process_inherit_error_mode)) | |
358 | flags |= CREATE_DEFAULT_ERROR_MODE; | |
6cdfb6e6 | 359 | if (!CreateProcess (exe, cmdline, &sec_attrs, NULL, TRUE, |
82e7c0a9 | 360 | flags, env, dir, &start, &cp->procinfo)) |
c519b5e1 GV |
361 | goto EH_Fail; |
362 | ||
363 | cp->pid = (int) cp->procinfo.dwProcessId; | |
364 | ||
365 | /* Hack for Windows 95, which assigns large (ie negative) pids */ | |
366 | if (cp->pid < 0) | |
367 | cp->pid = -cp->pid; | |
368 | ||
369 | /* pid must fit in a Lisp_Int */ | |
370 | cp->pid = (cp->pid & VALMASK); | |
371 | ||
c519b5e1 | 372 | *pPid = cp->pid; |
b2fc9f3d | 373 | |
6cdfb6e6 | 374 | return TRUE; |
b2fc9f3d | 375 | |
6cdfb6e6 | 376 | EH_Fail: |
c519b5e1 | 377 | DebPrint (("create_child.CreateProcess failed: %ld\n", GetLastError());); |
6cdfb6e6 RS |
378 | return FALSE; |
379 | } | |
380 | ||
381 | /* create_child doesn't know what emacs' file handle will be for waiting | |
382 | on output from the child, so we need to make this additional call | |
383 | to register the handle with the process | |
384 | This way the select emulator knows how to match file handles with | |
385 | entries in child_procs. */ | |
386 | void | |
387 | register_child (int pid, int fd) | |
388 | { | |
389 | child_process *cp; | |
390 | ||
391 | cp = find_child_pid (pid); | |
392 | if (cp == NULL) | |
393 | { | |
394 | DebPrint (("register_child unable to find pid %lu\n", pid)); | |
395 | return; | |
396 | } | |
397 | ||
398 | #ifdef FULL_DEBUG | |
399 | DebPrint (("register_child registered fd %d with pid %lu\n", fd, pid)); | |
400 | #endif | |
401 | ||
402 | cp->fd = fd; | |
6cdfb6e6 | 403 | |
c519b5e1 GV |
404 | /* thread is initially blocked until select is called; set status so |
405 | that select will release thread */ | |
406 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
407 | ||
408 | /* attach child_process to fd_info */ | |
409 | if (fd_info[fd].cp != NULL) | |
6cdfb6e6 | 410 | { |
c519b5e1 GV |
411 | DebPrint (("register_child: fd_info[%d] apparently in use!\n", fd)); |
412 | abort (); | |
6cdfb6e6 | 413 | } |
c519b5e1 GV |
414 | |
415 | fd_info[fd].cp = cp; | |
6cdfb6e6 RS |
416 | } |
417 | ||
418 | /* When a process dies its pipe will break so the reader thread will | |
419 | signal failure to the select emulator. | |
420 | The select emulator then calls this routine to clean up. | |
421 | Since the thread signaled failure we can assume it is exiting. */ | |
422 | static void | |
c519b5e1 | 423 | reap_subprocess (child_process *cp) |
6cdfb6e6 | 424 | { |
c519b5e1 | 425 | if (cp->procinfo.hProcess) |
6cdfb6e6 | 426 | { |
c519b5e1 | 427 | /* Reap the process */ |
b2fc9f3d GV |
428 | #ifdef FULL_DEBUG |
429 | /* Process should have already died before we are called. */ | |
430 | if (WaitForSingleObject (cp->procinfo.hProcess, 0) != WAIT_OBJECT_0) | |
431 | DebPrint (("reap_subprocess: child fpr fd %d has not died yet!", cp->fd)); | |
432 | #endif | |
c519b5e1 GV |
433 | CloseHandle (cp->procinfo.hProcess); |
434 | cp->procinfo.hProcess = NULL; | |
435 | CloseHandle (cp->procinfo.hThread); | |
436 | cp->procinfo.hThread = NULL; | |
6cdfb6e6 | 437 | } |
c519b5e1 GV |
438 | |
439 | /* For asynchronous children, the child_proc resources will be freed | |
440 | when the last pipe read descriptor is closed; for synchronous | |
441 | children, we must explicitly free the resources now because | |
442 | register_child has not been called. */ | |
443 | if (cp->fd == -1) | |
444 | delete_child (cp); | |
6cdfb6e6 RS |
445 | } |
446 | ||
447 | /* Wait for any of our existing child processes to die | |
448 | When it does, close its handle | |
449 | Return the pid and fill in the status if non-NULL. */ | |
22759c72 | 450 | |
6cdfb6e6 | 451 | int |
c519b5e1 | 452 | sys_wait (int *status) |
6cdfb6e6 RS |
453 | { |
454 | DWORD active, retval; | |
455 | int nh; | |
c519b5e1 | 456 | int pid; |
6cdfb6e6 RS |
457 | child_process *cp, *cps[MAX_CHILDREN]; |
458 | HANDLE wait_hnd[MAX_CHILDREN]; | |
459 | ||
460 | nh = 0; | |
461 | if (dead_child != NULL) | |
462 | { | |
463 | /* We want to wait for a specific child */ | |
c519b5e1 | 464 | wait_hnd[nh] = dead_child->procinfo.hProcess; |
6cdfb6e6 | 465 | cps[nh] = dead_child; |
c519b5e1 | 466 | if (!wait_hnd[nh]) abort (); |
6cdfb6e6 | 467 | nh++; |
b2fc9f3d GV |
468 | active = 0; |
469 | goto get_result; | |
6cdfb6e6 RS |
470 | } |
471 | else | |
472 | { | |
473 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) | |
c519b5e1 GV |
474 | /* some child_procs might be sockets; ignore them */ |
475 | if (CHILD_ACTIVE (cp) && cp->procinfo.hProcess) | |
6cdfb6e6 | 476 | { |
c519b5e1 | 477 | wait_hnd[nh] = cp->procinfo.hProcess; |
6cdfb6e6 RS |
478 | cps[nh] = cp; |
479 | nh++; | |
480 | } | |
481 | } | |
482 | ||
483 | if (nh == 0) | |
484 | { | |
485 | /* Nothing to wait on, so fail */ | |
486 | errno = ECHILD; | |
487 | return -1; | |
488 | } | |
b2fc9f3d GV |
489 | |
490 | do | |
491 | { | |
492 | /* Check for quit about once a second. */ | |
493 | QUIT; | |
494 | active = WaitForMultipleObjects (nh, wait_hnd, FALSE, 1000); | |
495 | } while (active == WAIT_TIMEOUT); | |
496 | ||
6cdfb6e6 RS |
497 | if (active == WAIT_FAILED) |
498 | { | |
499 | errno = EBADF; | |
500 | return -1; | |
501 | } | |
b2fc9f3d GV |
502 | else if (active >= WAIT_OBJECT_0 |
503 | && active < WAIT_OBJECT_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
504 | { |
505 | active -= WAIT_OBJECT_0; | |
506 | } | |
b2fc9f3d GV |
507 | else if (active >= WAIT_ABANDONED_0 |
508 | && active < WAIT_ABANDONED_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
509 | { |
510 | active -= WAIT_ABANDONED_0; | |
511 | } | |
b2fc9f3d GV |
512 | else |
513 | abort (); | |
514 | ||
515 | get_result: | |
6cdfb6e6 RS |
516 | if (!GetExitCodeProcess (wait_hnd[active], &retval)) |
517 | { | |
518 | DebPrint (("Wait.GetExitCodeProcess failed with %lu\n", | |
519 | GetLastError ())); | |
520 | retval = 1; | |
521 | } | |
522 | if (retval == STILL_ACTIVE) | |
523 | { | |
524 | /* Should never happen */ | |
525 | DebPrint (("Wait.WaitForMultipleObjects returned an active process\n")); | |
526 | errno = EINVAL; | |
527 | return -1; | |
528 | } | |
bc69349b RS |
529 | |
530 | /* Massage the exit code from the process to match the format expected | |
8e6208c5 | 531 | by the WIFSTOPPED et al macros in syswait.h. Only WIFSIGNALED and |
bc69349b RS |
532 | WIFEXITED are supported; WIFSTOPPED doesn't make sense under NT. */ |
533 | ||
534 | if (retval == STATUS_CONTROL_C_EXIT) | |
535 | retval = SIGINT; | |
536 | else | |
537 | retval <<= 8; | |
c519b5e1 | 538 | |
6cdfb6e6 | 539 | cp = cps[active]; |
c519b5e1 GV |
540 | pid = cp->pid; |
541 | #ifdef FULL_DEBUG | |
542 | DebPrint (("Wait signaled with process pid %d\n", cp->pid)); | |
543 | #endif | |
22759c72 | 544 | |
6cdfb6e6 RS |
545 | if (status) |
546 | { | |
22759c72 KH |
547 | *status = retval; |
548 | } | |
549 | else if (synch_process_alive) | |
550 | { | |
551 | synch_process_alive = 0; | |
22759c72 | 552 | |
3d7eead0 GV |
553 | /* Report the status of the synchronous process. */ |
554 | if (WIFEXITED (retval)) | |
555 | synch_process_retcode = WRETCODE (retval); | |
556 | else if (WIFSIGNALED (retval)) | |
557 | { | |
558 | int code = WTERMSIG (retval); | |
68c45bf0 PE |
559 | char *signame; |
560 | ||
ca9c0567 | 561 | synchronize_system_messages_locale (); |
68c45bf0 PE |
562 | signame = strsignal (code); |
563 | ||
3d7eead0 GV |
564 | if (signame == 0) |
565 | signame = "unknown"; | |
566 | ||
567 | synch_process_death = signame; | |
568 | } | |
c519b5e1 GV |
569 | |
570 | reap_subprocess (cp); | |
6cdfb6e6 | 571 | } |
b2fc9f3d GV |
572 | |
573 | reap_subprocess (cp); | |
6cdfb6e6 | 574 | |
c519b5e1 | 575 | return pid; |
6cdfb6e6 RS |
576 | } |
577 | ||
b2fc9f3d | 578 | void |
a55a5f3c | 579 | w32_executable_type (char * filename, int * is_dos_app, int * is_cygnus_app, int * is_gui_app) |
817abdf6 | 580 | { |
b2fc9f3d GV |
581 | file_data executable; |
582 | char * p; | |
583 | ||
584 | /* Default values in case we can't tell for sure. */ | |
585 | *is_dos_app = FALSE; | |
586 | *is_cygnus_app = FALSE; | |
a55a5f3c | 587 | *is_gui_app = FALSE; |
b2fc9f3d GV |
588 | |
589 | if (!open_input_file (&executable, filename)) | |
590 | return; | |
817abdf6 | 591 | |
b2fc9f3d GV |
592 | p = strrchr (filename, '.'); |
593 | ||
594 | /* We can only identify DOS .com programs from the extension. */ | |
595 | if (p && stricmp (p, ".com") == 0) | |
596 | *is_dos_app = TRUE; | |
597 | else if (p && (stricmp (p, ".bat") == 0 | |
598 | || stricmp (p, ".cmd") == 0)) | |
599 | { | |
600 | /* A DOS shell script - it appears that CreateProcess is happy to | |
601 | accept this (somewhat surprisingly); presumably it looks at | |
602 | COMSPEC to determine what executable to actually invoke. | |
603 | Therefore, we have to do the same here as well. */ | |
604 | /* Actually, I think it uses the program association for that | |
605 | extension, which is defined in the registry. */ | |
606 | p = egetenv ("COMSPEC"); | |
607 | if (p) | |
a55a5f3c | 608 | w32_executable_type (p, is_dos_app, is_cygnus_app, is_gui_app); |
b2fc9f3d GV |
609 | } |
610 | else | |
817abdf6 | 611 | { |
b2fc9f3d GV |
612 | /* Look for DOS .exe signature - if found, we must also check that |
613 | it isn't really a 16- or 32-bit Windows exe, since both formats | |
614 | start with a DOS program stub. Note that 16-bit Windows | |
615 | executables use the OS/2 1.x format. */ | |
817abdf6 | 616 | |
b2fc9f3d GV |
617 | IMAGE_DOS_HEADER * dos_header; |
618 | IMAGE_NT_HEADERS * nt_header; | |
619 | ||
620 | dos_header = (PIMAGE_DOS_HEADER) executable.file_base; | |
621 | if (dos_header->e_magic != IMAGE_DOS_SIGNATURE) | |
622 | goto unwind; | |
623 | ||
624 | nt_header = (PIMAGE_NT_HEADERS) ((char *) dos_header + dos_header->e_lfanew); | |
625 | ||
ef79fbba | 626 | if ((char *) nt_header > (char *) dos_header + executable.size) |
817abdf6 | 627 | { |
b2fc9f3d GV |
628 | /* Some dos headers (pkunzip) have bogus e_lfanew fields. */ |
629 | *is_dos_app = TRUE; | |
630 | } | |
631 | else if (nt_header->Signature != IMAGE_NT_SIGNATURE | |
632 | && LOWORD (nt_header->Signature) != IMAGE_OS2_SIGNATURE) | |
633 | { | |
634 | *is_dos_app = TRUE; | |
635 | } | |
636 | else if (nt_header->Signature == IMAGE_NT_SIGNATURE) | |
637 | { | |
638 | /* Look for cygwin.dll in DLL import list. */ | |
639 | IMAGE_DATA_DIRECTORY import_dir = | |
640 | nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT]; | |
641 | IMAGE_IMPORT_DESCRIPTOR * imports; | |
642 | IMAGE_SECTION_HEADER * section; | |
643 | ||
644 | section = rva_to_section (import_dir.VirtualAddress, nt_header); | |
645 | imports = RVA_TO_PTR (import_dir.VirtualAddress, section, executable); | |
646 | ||
647 | for ( ; imports->Name; imports++) | |
648 | { | |
649 | char * dllname = RVA_TO_PTR (imports->Name, section, executable); | |
650 | ||
a7325b56 AI |
651 | /* The exact name of the cygwin dll has changed with |
652 | various releases, but hopefully this will be reasonably | |
653 | future proof. */ | |
654 | if (strncmp (dllname, "cygwin", 6) == 0) | |
b2fc9f3d GV |
655 | { |
656 | *is_cygnus_app = TRUE; | |
657 | break; | |
658 | } | |
659 | } | |
a55a5f3c AI |
660 | |
661 | /* Check whether app is marked as a console or windowed (aka | |
662 | GUI) app. Accept Posix and OS2 subsytem apps as console | |
663 | apps. */ | |
664 | *is_gui_app = (nt_header->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_GUI); | |
b2fc9f3d | 665 | } |
817abdf6 | 666 | } |
b2fc9f3d GV |
667 | |
668 | unwind: | |
669 | close_file_data (&executable); | |
817abdf6 KH |
670 | } |
671 | ||
d9709fde | 672 | int |
42c95ffb | 673 | compare_env (const void *strp1, const void *strp2) |
d9709fde | 674 | { |
42c95ffb | 675 | const char *str1 = *(const char **)strp1, *str2 = *(const char **)strp2; |
d9709fde GV |
676 | |
677 | while (*str1 && *str2 && *str1 != '=' && *str2 != '=') | |
678 | { | |
11c22fff AI |
679 | /* Sort order in command.com/cmd.exe is based on uppercasing |
680 | names, so do the same here. */ | |
681 | if (toupper (*str1) > toupper (*str2)) | |
d9709fde | 682 | return 1; |
11c22fff | 683 | else if (toupper (*str1) < toupper (*str2)) |
d9709fde GV |
684 | return -1; |
685 | str1++, str2++; | |
686 | } | |
687 | ||
688 | if (*str1 == '=' && *str2 == '=') | |
689 | return 0; | |
690 | else if (*str1 == '=') | |
691 | return -1; | |
692 | else | |
693 | return 1; | |
694 | } | |
695 | ||
696 | void | |
697 | merge_and_sort_env (char **envp1, char **envp2, char **new_envp) | |
698 | { | |
699 | char **optr, **nptr; | |
700 | int num; | |
701 | ||
702 | nptr = new_envp; | |
703 | optr = envp1; | |
704 | while (*optr) | |
705 | *nptr++ = *optr++; | |
706 | num = optr - envp1; | |
707 | ||
708 | optr = envp2; | |
709 | while (*optr) | |
710 | *nptr++ = *optr++; | |
711 | num += optr - envp2; | |
712 | ||
713 | qsort (new_envp, num, sizeof (char *), compare_env); | |
714 | ||
715 | *nptr = NULL; | |
716 | } | |
6cdfb6e6 RS |
717 | |
718 | /* When a new child process is created we need to register it in our list, | |
719 | so intercept spawn requests. */ | |
720 | int | |
c519b5e1 | 721 | sys_spawnve (int mode, char *cmdname, char **argv, char **envp) |
6cdfb6e6 | 722 | { |
0a4de642 | 723 | Lisp_Object program, full; |
6cdfb6e6 | 724 | char *cmdline, *env, *parg, **targ; |
d9709fde | 725 | int arglen, numenv; |
c519b5e1 GV |
726 | int pid; |
727 | child_process *cp; | |
a55a5f3c | 728 | int is_dos_app, is_cygnus_app, is_gui_app; |
b2fc9f3d GV |
729 | int do_quoting = 0; |
730 | char escape_char; | |
d9709fde GV |
731 | /* We pass our process ID to our children by setting up an environment |
732 | variable in their environment. */ | |
733 | char ppid_env_var_buffer[64]; | |
734 | char *extra_env[] = {ppid_env_var_buffer, NULL}; | |
dbb70029 | 735 | char *sepchars = " \t"; |
d9709fde | 736 | |
c519b5e1 GV |
737 | /* We don't care about the other modes */ |
738 | if (mode != _P_NOWAIT) | |
739 | { | |
740 | errno = EINVAL; | |
741 | return -1; | |
742 | } | |
0a4de642 RS |
743 | |
744 | /* Handle executable names without an executable suffix. */ | |
745 | program = make_string (cmdname, strlen (cmdname)); | |
746 | if (NILP (Ffile_executable_p (program))) | |
747 | { | |
748 | struct gcpro gcpro1; | |
749 | ||
750 | full = Qnil; | |
751 | GCPRO1 (program); | |
44c7a526 | 752 | openp (Vexec_path, program, Vexec_suffixes, &full, make_number (X_OK)); |
0a4de642 RS |
753 | UNGCPRO; |
754 | if (NILP (full)) | |
755 | { | |
756 | errno = EINVAL; | |
757 | return -1; | |
758 | } | |
b2fc9f3d | 759 | program = full; |
0a4de642 RS |
760 | } |
761 | ||
b2fc9f3d | 762 | /* make sure argv[0] and cmdname are both in DOS format */ |
d5db4077 | 763 | cmdname = SDATA (program); |
c519b5e1 GV |
764 | unixtodos_filename (cmdname); |
765 | argv[0] = cmdname; | |
817abdf6 | 766 | |
ef79fbba | 767 | /* Determine whether program is a 16-bit DOS executable, or a w32 |
b2fc9f3d GV |
768 | executable that is implicitly linked to the Cygnus dll (implying it |
769 | was compiled with the Cygnus GNU toolchain and hence relies on | |
770 | cygwin.dll to parse the command line - we use this to decide how to | |
a55a5f3c AI |
771 | escape quote chars in command line args that must be quoted). |
772 | ||
773 | Also determine whether it is a GUI app, so that we don't hide its | |
774 | initial window unless specifically requested. */ | |
775 | w32_executable_type (cmdname, &is_dos_app, &is_cygnus_app, &is_gui_app); | |
b2fc9f3d GV |
776 | |
777 | /* On Windows 95, if cmdname is a DOS app, we invoke a helper | |
778 | application to start it by specifying the helper app as cmdname, | |
779 | while leaving the real app name as argv[0]. */ | |
780 | if (is_dos_app) | |
817abdf6 | 781 | { |
b2fc9f3d GV |
782 | cmdname = alloca (MAXPATHLEN); |
783 | if (egetenv ("CMDPROXY")) | |
784 | strcpy (cmdname, egetenv ("CMDPROXY")); | |
785 | else | |
786 | { | |
d5db4077 | 787 | strcpy (cmdname, SDATA (Vinvocation_directory)); |
b2fc9f3d GV |
788 | strcat (cmdname, "cmdproxy.exe"); |
789 | } | |
790 | unixtodos_filename (cmdname); | |
817abdf6 | 791 | } |
6cdfb6e6 RS |
792 | |
793 | /* we have to do some conjuring here to put argv and envp into the | |
794 | form CreateProcess wants... argv needs to be a space separated/null | |
795 | terminated list of parameters, and envp is a null | |
796 | separated/double-null terminated list of parameters. | |
c519b5e1 | 797 | |
b2fc9f3d GV |
798 | Additionally, zero-length args and args containing whitespace or |
799 | quote chars need to be wrapped in double quotes - for this to work, | |
800 | embedded quotes need to be escaped as well. The aim is to ensure | |
801 | the child process reconstructs the argv array we start with | |
802 | exactly, so we treat quotes at the beginning and end of arguments | |
803 | as embedded quotes. | |
804 | ||
ef79fbba | 805 | The w32 GNU-based library from Cygnus doubles quotes to escape |
b2fc9f3d GV |
806 | them, while MSVC uses backslash for escaping. (Actually the MSVC |
807 | startup code does attempt to recognise doubled quotes and accept | |
808 | them, but gets it wrong and ends up requiring three quotes to get a | |
809 | single embedded quote!) So by default we decide whether to use | |
810 | quote or backslash as the escape character based on whether the | |
811 | binary is apparently a Cygnus compiled app. | |
812 | ||
813 | Note that using backslash to escape embedded quotes requires | |
814 | additional special handling if an embedded quote is already | |
815 | preceeded by backslash, or if an arg requiring quoting ends with | |
816 | backslash. In such cases, the run of escape characters needs to be | |
817 | doubled. For consistency, we apply this special handling as long | |
818 | as the escape character is not quote. | |
819 | ||
820 | Since we have no idea how large argv and envp are likely to be we | |
821 | figure out list lengths on the fly and allocate them. */ | |
822 | ||
823 | if (!NILP (Vw32_quote_process_args)) | |
824 | { | |
825 | do_quoting = 1; | |
826 | /* Override escape char by binding w32-quote-process-args to | |
827 | desired character, or use t for auto-selection. */ | |
828 | if (INTEGERP (Vw32_quote_process_args)) | |
829 | escape_char = XINT (Vw32_quote_process_args); | |
830 | else | |
831 | escape_char = is_cygnus_app ? '"' : '\\'; | |
832 | } | |
6cdfb6e6 | 833 | |
dbb70029 GM |
834 | /* Cygwin apps needs quoting a bit more often */ |
835 | if (escape_char == '"') | |
836 | sepchars = "\r\n\t\f '"; | |
837 | ||
6cdfb6e6 RS |
838 | /* do argv... */ |
839 | arglen = 0; | |
840 | targ = argv; | |
841 | while (*targ) | |
842 | { | |
c519b5e1 | 843 | char * p = *targ; |
b2fc9f3d GV |
844 | int need_quotes = 0; |
845 | int escape_char_run = 0; | |
c519b5e1 GV |
846 | |
847 | if (*p == 0) | |
b2fc9f3d GV |
848 | need_quotes = 1; |
849 | for ( ; *p; p++) | |
850 | { | |
dbb70029 GM |
851 | if (escape_char == '"' && *p == '\\') |
852 | /* If it's a Cygwin app, \ needs to be escaped. */ | |
853 | arglen++; | |
854 | else if (*p == '"') | |
b2fc9f3d GV |
855 | { |
856 | /* allow for embedded quotes to be escaped */ | |
857 | arglen++; | |
858 | need_quotes = 1; | |
859 | /* handle the case where the embedded quote is already escaped */ | |
860 | if (escape_char_run > 0) | |
861 | { | |
862 | /* To preserve the arg exactly, we need to double the | |
863 | preceding escape characters (plus adding one to | |
864 | escape the quote character itself). */ | |
865 | arglen += escape_char_run; | |
866 | } | |
867 | } | |
dbb70029 | 868 | else if (strchr (sepchars, *p) != NULL) |
b2fc9f3d GV |
869 | { |
870 | need_quotes = 1; | |
871 | } | |
872 | ||
873 | if (*p == escape_char && escape_char != '"') | |
874 | escape_char_run++; | |
875 | else | |
876 | escape_char_run = 0; | |
877 | } | |
878 | if (need_quotes) | |
879 | { | |
880 | arglen += 2; | |
881 | /* handle the case where the arg ends with an escape char - we | |
882 | must not let the enclosing quote be escaped. */ | |
883 | if (escape_char_run > 0) | |
884 | arglen += escape_char_run; | |
885 | } | |
6cdfb6e6 RS |
886 | arglen += strlen (*targ++) + 1; |
887 | } | |
c519b5e1 | 888 | cmdline = alloca (arglen); |
6cdfb6e6 RS |
889 | targ = argv; |
890 | parg = cmdline; | |
891 | while (*targ) | |
892 | { | |
c519b5e1 | 893 | char * p = *targ; |
b2fc9f3d | 894 | int need_quotes = 0; |
c519b5e1 GV |
895 | |
896 | if (*p == 0) | |
b2fc9f3d | 897 | need_quotes = 1; |
93fdf2f8 | 898 | |
b2fc9f3d | 899 | if (do_quoting) |
93fdf2f8 | 900 | { |
93fdf2f8 | 901 | for ( ; *p; p++) |
dbb70029 | 902 | if ((strchr (sepchars, *p) != NULL) || *p == '"') |
b2fc9f3d | 903 | need_quotes = 1; |
93fdf2f8 | 904 | } |
b2fc9f3d | 905 | if (need_quotes) |
c519b5e1 | 906 | { |
b2fc9f3d | 907 | int escape_char_run = 0; |
c519b5e1 GV |
908 | char * first; |
909 | char * last; | |
910 | ||
911 | p = *targ; | |
912 | first = p; | |
913 | last = p + strlen (p) - 1; | |
914 | *parg++ = '"'; | |
b2fc9f3d GV |
915 | #if 0 |
916 | /* This version does not escape quotes if they occur at the | |
917 | beginning or end of the arg - this could lead to incorrect | |
918 | behaviour when the arg itself represents a command line | |
919 | containing quoted args. I believe this was originally done | |
920 | as a hack to make some things work, before | |
921 | `w32-quote-process-args' was added. */ | |
c519b5e1 GV |
922 | while (*p) |
923 | { | |
924 | if (*p == '"' && p > first && p < last) | |
b2fc9f3d | 925 | *parg++ = escape_char; /* escape embedded quotes */ |
c519b5e1 GV |
926 | *parg++ = *p++; |
927 | } | |
b2fc9f3d GV |
928 | #else |
929 | for ( ; *p; p++) | |
930 | { | |
931 | if (*p == '"') | |
932 | { | |
933 | /* double preceding escape chars if any */ | |
934 | while (escape_char_run > 0) | |
935 | { | |
936 | *parg++ = escape_char; | |
937 | escape_char_run--; | |
938 | } | |
939 | /* escape all quote chars, even at beginning or end */ | |
940 | *parg++ = escape_char; | |
941 | } | |
dbb70029 GM |
942 | else if (escape_char == '"' && *p == '\\') |
943 | *parg++ = '\\'; | |
b2fc9f3d GV |
944 | *parg++ = *p; |
945 | ||
946 | if (*p == escape_char && escape_char != '"') | |
947 | escape_char_run++; | |
948 | else | |
949 | escape_char_run = 0; | |
950 | } | |
951 | /* double escape chars before enclosing quote */ | |
952 | while (escape_char_run > 0) | |
953 | { | |
954 | *parg++ = escape_char; | |
955 | escape_char_run--; | |
956 | } | |
957 | #endif | |
c519b5e1 GV |
958 | *parg++ = '"'; |
959 | } | |
960 | else | |
961 | { | |
962 | strcpy (parg, *targ); | |
963 | parg += strlen (*targ); | |
964 | } | |
6cdfb6e6 | 965 | *parg++ = ' '; |
c519b5e1 | 966 | targ++; |
6cdfb6e6 RS |
967 | } |
968 | *--parg = '\0'; | |
969 | ||
970 | /* and envp... */ | |
971 | arglen = 1; | |
972 | targ = envp; | |
d9709fde | 973 | numenv = 1; /* for end null */ |
6cdfb6e6 RS |
974 | while (*targ) |
975 | { | |
976 | arglen += strlen (*targ++) + 1; | |
d9709fde | 977 | numenv++; |
6cdfb6e6 | 978 | } |
d9709fde | 979 | /* extra env vars... */ |
a5b56dcd | 980 | sprintf (ppid_env_var_buffer, "EM_PARENT_PROCESS_ID=%d", |
6cdfb6e6 RS |
981 | GetCurrentProcessId ()); |
982 | arglen += strlen (ppid_env_var_buffer) + 1; | |
d9709fde | 983 | numenv++; |
6cdfb6e6 | 984 | |
d9709fde GV |
985 | /* merge env passed in and extra env into one, and sort it. */ |
986 | targ = (char **) alloca (numenv * sizeof (char *)); | |
987 | merge_and_sort_env (envp, extra_env, targ); | |
988 | ||
989 | /* concatenate env entries. */ | |
c519b5e1 | 990 | env = alloca (arglen); |
6cdfb6e6 RS |
991 | parg = env; |
992 | while (*targ) | |
993 | { | |
994 | strcpy (parg, *targ); | |
995 | parg += strlen (*targ++); | |
996 | *parg++ = '\0'; | |
997 | } | |
6cdfb6e6 RS |
998 | *parg++ = '\0'; |
999 | *parg = '\0'; | |
c519b5e1 GV |
1000 | |
1001 | cp = new_child (); | |
1002 | if (cp == NULL) | |
1003 | { | |
1004 | errno = EAGAIN; | |
1005 | return -1; | |
1006 | } | |
6cdfb6e6 RS |
1007 | |
1008 | /* Now create the process. */ | |
a55a5f3c | 1009 | if (!create_child (cmdname, cmdline, env, is_gui_app, &pid, cp)) |
6cdfb6e6 | 1010 | { |
c519b5e1 | 1011 | delete_child (cp); |
6cdfb6e6 | 1012 | errno = ENOEXEC; |
c519b5e1 | 1013 | return -1; |
6cdfb6e6 RS |
1014 | } |
1015 | ||
c519b5e1 | 1016 | return pid; |
6cdfb6e6 RS |
1017 | } |
1018 | ||
1019 | /* Emulate the select call | |
1020 | Wait for available input on any of the given rfds, or timeout if | |
1021 | a timeout is given and no input is detected | |
b2fc9f3d GV |
1022 | wfds and efds are not supported and must be NULL. |
1023 | ||
1024 | For simplicity, we detect the death of child processes here and | |
1025 | synchronously call the SIGCHLD handler. Since it is possible for | |
1026 | children to be created without a corresponding pipe handle from which | |
1027 | to read output, we wait separately on the process handles as well as | |
1028 | the char_avail events for each process pipe. We only call | |
86143765 RS |
1029 | wait/reap_process when the process actually terminates. |
1030 | ||
1031 | To reduce the number of places in which Emacs can be hung such that | |
1032 | C-g is not able to interrupt it, we always wait on interrupt_handle | |
1033 | (which is signalled by the input thread when C-g is detected). If we | |
1034 | detect that we were woken up by C-g, we return -1 with errno set to | |
1035 | EINTR as on Unix. */ | |
6cdfb6e6 RS |
1036 | |
1037 | /* From ntterm.c */ | |
1038 | extern HANDLE keyboard_handle; | |
86143765 RS |
1039 | |
1040 | /* From w32xfns.c */ | |
1041 | extern HANDLE interrupt_handle; | |
1042 | ||
6cdfb6e6 RS |
1043 | /* From process.c */ |
1044 | extern int proc_buffered_char[]; | |
1045 | ||
1046 | int | |
22759c72 KH |
1047 | sys_select (int nfds, SELECT_TYPE *rfds, SELECT_TYPE *wfds, SELECT_TYPE *efds, |
1048 | EMACS_TIME *timeout) | |
6cdfb6e6 RS |
1049 | { |
1050 | SELECT_TYPE orfds; | |
b2fc9f3d GV |
1051 | DWORD timeout_ms, start_time; |
1052 | int i, nh, nc, nr; | |
6cdfb6e6 | 1053 | DWORD active; |
b2fc9f3d GV |
1054 | child_process *cp, *cps[MAX_CHILDREN]; |
1055 | HANDLE wait_hnd[MAXDESC + MAX_CHILDREN]; | |
c519b5e1 | 1056 | int fdindex[MAXDESC]; /* mapping from wait handles back to descriptors */ |
6cdfb6e6 | 1057 | |
b2fc9f3d GV |
1058 | timeout_ms = timeout ? (timeout->tv_sec * 1000 + timeout->tv_usec / 1000) : INFINITE; |
1059 | ||
6cdfb6e6 RS |
1060 | /* If the descriptor sets are NULL but timeout isn't, then just Sleep. */ |
1061 | if (rfds == NULL && wfds == NULL && efds == NULL && timeout != NULL) | |
1062 | { | |
b2fc9f3d | 1063 | Sleep (timeout_ms); |
6cdfb6e6 RS |
1064 | return 0; |
1065 | } | |
1066 | ||
1067 | /* Otherwise, we only handle rfds, so fail otherwise. */ | |
1068 | if (rfds == NULL || wfds != NULL || efds != NULL) | |
1069 | { | |
1070 | errno = EINVAL; | |
1071 | return -1; | |
1072 | } | |
1073 | ||
1074 | orfds = *rfds; | |
1075 | FD_ZERO (rfds); | |
1076 | nr = 0; | |
86143765 RS |
1077 | |
1078 | /* Always wait on interrupt_handle, to detect C-g (quit). */ | |
1079 | wait_hnd[0] = interrupt_handle; | |
1080 | fdindex[0] = -1; | |
6cdfb6e6 | 1081 | |
b2fc9f3d | 1082 | /* Build a list of pipe handles to wait on. */ |
86143765 | 1083 | nh = 1; |
6cdfb6e6 RS |
1084 | for (i = 0; i < nfds; i++) |
1085 | if (FD_ISSET (i, &orfds)) | |
1086 | { | |
1087 | if (i == 0) | |
1088 | { | |
c519b5e1 GV |
1089 | if (keyboard_handle) |
1090 | { | |
1091 | /* Handle stdin specially */ | |
1092 | wait_hnd[nh] = keyboard_handle; | |
1093 | fdindex[nh] = i; | |
1094 | nh++; | |
1095 | } | |
6cdfb6e6 RS |
1096 | |
1097 | /* Check for any emacs-generated input in the queue since | |
1098 | it won't be detected in the wait */ | |
1099 | if (detect_input_pending ()) | |
1100 | { | |
1101 | FD_SET (i, rfds); | |
c519b5e1 | 1102 | return 1; |
6cdfb6e6 RS |
1103 | } |
1104 | } | |
1105 | else | |
1106 | { | |
c519b5e1 GV |
1107 | /* Child process and socket input */ |
1108 | cp = fd_info[i].cp; | |
6cdfb6e6 RS |
1109 | if (cp) |
1110 | { | |
c519b5e1 GV |
1111 | int current_status = cp->status; |
1112 | ||
1113 | if (current_status == STATUS_READ_ACKNOWLEDGED) | |
1114 | { | |
1115 | /* Tell reader thread which file handle to use. */ | |
1116 | cp->fd = i; | |
1117 | /* Wake up the reader thread for this process */ | |
1118 | cp->status = STATUS_READ_READY; | |
1119 | if (!SetEvent (cp->char_consumed)) | |
1120 | DebPrint (("nt_select.SetEvent failed with " | |
1121 | "%lu for fd %ld\n", GetLastError (), i)); | |
1122 | } | |
1123 | ||
1124 | #ifdef CHECK_INTERLOCK | |
1125 | /* slightly crude cross-checking of interlock between threads */ | |
1126 | ||
1127 | current_status = cp->status; | |
1128 | if (WaitForSingleObject (cp->char_avail, 0) == WAIT_OBJECT_0) | |
1129 | { | |
1130 | /* char_avail has been signalled, so status (which may | |
1131 | have changed) should indicate read has completed | |
1132 | but has not been acknowledged. */ | |
1133 | current_status = cp->status; | |
b2fc9f3d GV |
1134 | if (current_status != STATUS_READ_SUCCEEDED |
1135 | && current_status != STATUS_READ_FAILED) | |
c519b5e1 GV |
1136 | DebPrint (("char_avail set, but read not completed: status %d\n", |
1137 | current_status)); | |
1138 | } | |
1139 | else | |
1140 | { | |
1141 | /* char_avail has not been signalled, so status should | |
1142 | indicate that read is in progress; small possibility | |
1143 | that read has completed but event wasn't yet signalled | |
1144 | when we tested it (because a context switch occurred | |
1145 | or if running on separate CPUs). */ | |
b2fc9f3d GV |
1146 | if (current_status != STATUS_READ_READY |
1147 | && current_status != STATUS_READ_IN_PROGRESS | |
1148 | && current_status != STATUS_READ_SUCCEEDED | |
1149 | && current_status != STATUS_READ_FAILED) | |
c519b5e1 GV |
1150 | DebPrint (("char_avail reset, but read status is bad: %d\n", |
1151 | current_status)); | |
1152 | } | |
1153 | #endif | |
1154 | wait_hnd[nh] = cp->char_avail; | |
1155 | fdindex[nh] = i; | |
1156 | if (!wait_hnd[nh]) abort (); | |
1157 | nh++; | |
6cdfb6e6 RS |
1158 | #ifdef FULL_DEBUG |
1159 | DebPrint (("select waiting on child %d fd %d\n", | |
1160 | cp-child_procs, i)); | |
1161 | #endif | |
6cdfb6e6 RS |
1162 | } |
1163 | else | |
1164 | { | |
c519b5e1 | 1165 | /* Unable to find something to wait on for this fd, skip */ |
ef79fbba GV |
1166 | |
1167 | /* Note that this is not a fatal error, and can in fact | |
1168 | happen in unusual circumstances. Specifically, if | |
1169 | sys_spawnve fails, eg. because the program doesn't | |
1170 | exist, and debug-on-error is t so Fsignal invokes a | |
1171 | nested input loop, then the process output pipe is | |
1172 | still included in input_wait_mask with no child_proc | |
1173 | associated with it. (It is removed when the debugger | |
1174 | exits the nested input loop and the error is thrown.) */ | |
1175 | ||
c519b5e1 | 1176 | DebPrint (("sys_select: fd %ld is invalid! ignoring\n", i)); |
6cdfb6e6 RS |
1177 | } |
1178 | } | |
1179 | } | |
b2fc9f3d GV |
1180 | |
1181 | count_children: | |
1182 | /* Add handles of child processes. */ | |
1183 | nc = 0; | |
1184 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) | |
ef79fbba GV |
1185 | /* Some child_procs might be sockets; ignore them. Also some |
1186 | children may have died already, but we haven't finished reading | |
1187 | the process output; ignore them too. */ | |
1188 | if (CHILD_ACTIVE (cp) && cp->procinfo.hProcess | |
1189 | && (cp->fd < 0 | |
1190 | || (fd_info[cp->fd].flags & FILE_SEND_SIGCHLD) == 0 | |
1191 | || (fd_info[cp->fd].flags & FILE_AT_EOF) != 0) | |
1192 | ) | |
b2fc9f3d GV |
1193 | { |
1194 | wait_hnd[nh + nc] = cp->procinfo.hProcess; | |
1195 | cps[nc] = cp; | |
1196 | nc++; | |
1197 | } | |
6cdfb6e6 RS |
1198 | |
1199 | /* Nothing to look for, so we didn't find anything */ | |
b2fc9f3d | 1200 | if (nh + nc == 0) |
6cdfb6e6 | 1201 | { |
22759c72 | 1202 | if (timeout) |
b2fc9f3d | 1203 | Sleep (timeout_ms); |
6cdfb6e6 RS |
1204 | return 0; |
1205 | } | |
6cdfb6e6 | 1206 | |
b2fc9f3d | 1207 | start_time = GetTickCount (); |
8b031dcc AI |
1208 | |
1209 | /* Wait for input or child death to be signalled. If user input is | |
1210 | allowed, then also accept window messages. */ | |
1211 | if (FD_ISSET (0, &orfds)) | |
1212 | active = MsgWaitForMultipleObjects (nh + nc, wait_hnd, FALSE, timeout_ms, | |
1213 | QS_ALLINPUT); | |
1214 | else | |
1215 | active = WaitForMultipleObjects (nh + nc, wait_hnd, FALSE, timeout_ms); | |
c519b5e1 | 1216 | |
6cdfb6e6 RS |
1217 | if (active == WAIT_FAILED) |
1218 | { | |
1219 | DebPrint (("select.WaitForMultipleObjects (%d, %lu) failed with %lu\n", | |
b2fc9f3d | 1220 | nh + nc, timeout_ms, GetLastError ())); |
c519b5e1 GV |
1221 | /* don't return EBADF - this causes wait_reading_process_input to |
1222 | abort; WAIT_FAILED is returned when single-stepping under | |
1223 | Windows 95 after switching thread focus in debugger, and | |
1224 | possibly at other times. */ | |
1225 | errno = EINTR; | |
6cdfb6e6 RS |
1226 | return -1; |
1227 | } | |
1228 | else if (active == WAIT_TIMEOUT) | |
1229 | { | |
1230 | return 0; | |
1231 | } | |
b2fc9f3d GV |
1232 | else if (active >= WAIT_OBJECT_0 |
1233 | && active < WAIT_OBJECT_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
1234 | { |
1235 | active -= WAIT_OBJECT_0; | |
1236 | } | |
b2fc9f3d GV |
1237 | else if (active >= WAIT_ABANDONED_0 |
1238 | && active < WAIT_ABANDONED_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
1239 | { |
1240 | active -= WAIT_ABANDONED_0; | |
1241 | } | |
b2fc9f3d GV |
1242 | else |
1243 | abort (); | |
6cdfb6e6 | 1244 | |
c519b5e1 GV |
1245 | /* Loop over all handles after active (now officially documented as |
1246 | being the first signalled handle in the array). We do this to | |
1247 | ensure fairness, so that all channels with data available will be | |
1248 | processed - otherwise higher numbered channels could be starved. */ | |
1249 | do | |
6cdfb6e6 | 1250 | { |
8b031dcc AI |
1251 | if (active == nh + nc) |
1252 | { | |
1253 | /* There are messages in the lisp thread's queue; we must | |
1254 | drain the queue now to ensure they are processed promptly, | |
1255 | because if we don't do so, we will not be woken again until | |
1256 | further messages arrive. | |
1257 | ||
1258 | NB. If ever we allow window message procedures to callback | |
1259 | into lisp, we will need to ensure messages are dispatched | |
1260 | at a safe time for lisp code to be run (*), and we may also | |
1261 | want to provide some hooks in the dispatch loop to cater | |
1262 | for modeless dialogs created by lisp (ie. to register | |
1263 | window handles to pass to IsDialogMessage). | |
1264 | ||
1265 | (*) Note that MsgWaitForMultipleObjects above is an | |
1266 | internal dispatch point for messages that are sent to | |
1267 | windows created by this thread. */ | |
1268 | drain_message_queue (); | |
1269 | } | |
1270 | else if (active >= nh) | |
b2fc9f3d GV |
1271 | { |
1272 | cp = cps[active - nh]; | |
ef79fbba GV |
1273 | |
1274 | /* We cannot always signal SIGCHLD immediately; if we have not | |
1275 | finished reading the process output, we must delay sending | |
1276 | SIGCHLD until we do. */ | |
1277 | ||
1278 | if (cp->fd >= 0 && (fd_info[cp->fd].flags & FILE_AT_EOF) == 0) | |
1279 | fd_info[cp->fd].flags |= FILE_SEND_SIGCHLD; | |
b2fc9f3d | 1280 | /* SIG_DFL for SIGCHLD is ignore */ |
ef79fbba GV |
1281 | else if (sig_handlers[SIGCHLD] != SIG_DFL && |
1282 | sig_handlers[SIGCHLD] != SIG_IGN) | |
b2fc9f3d GV |
1283 | { |
1284 | #ifdef FULL_DEBUG | |
1285 | DebPrint (("select calling SIGCHLD handler for pid %d\n", | |
1286 | cp->pid)); | |
1287 | #endif | |
1288 | dead_child = cp; | |
1289 | sig_handlers[SIGCHLD] (SIGCHLD); | |
1290 | dead_child = NULL; | |
1291 | } | |
1292 | } | |
86143765 RS |
1293 | else if (fdindex[active] == -1) |
1294 | { | |
1295 | /* Quit (C-g) was detected. */ | |
1296 | errno = EINTR; | |
1297 | return -1; | |
1298 | } | |
b2fc9f3d | 1299 | else if (fdindex[active] == 0) |
c519b5e1 GV |
1300 | { |
1301 | /* Keyboard input available */ | |
1302 | FD_SET (0, rfds); | |
6cdfb6e6 | 1303 | nr++; |
c519b5e1 | 1304 | } |
6cdfb6e6 | 1305 | else |
c519b5e1 | 1306 | { |
b2fc9f3d GV |
1307 | /* must be a socket or pipe - read ahead should have |
1308 | completed, either succeeding or failing. */ | |
c519b5e1 GV |
1309 | FD_SET (fdindex[active], rfds); |
1310 | nr++; | |
c519b5e1 GV |
1311 | } |
1312 | ||
b2fc9f3d GV |
1313 | /* Even though wait_reading_process_output only reads from at most |
1314 | one channel, we must process all channels here so that we reap | |
1315 | all children that have died. */ | |
1316 | while (++active < nh + nc) | |
c519b5e1 GV |
1317 | if (WaitForSingleObject (wait_hnd[active], 0) == WAIT_OBJECT_0) |
1318 | break; | |
b2fc9f3d GV |
1319 | } while (active < nh + nc); |
1320 | ||
1321 | /* If no input has arrived and timeout hasn't expired, wait again. */ | |
1322 | if (nr == 0) | |
1323 | { | |
1324 | DWORD elapsed = GetTickCount () - start_time; | |
1325 | ||
1326 | if (timeout_ms > elapsed) /* INFINITE is MAX_UINT */ | |
1327 | { | |
1328 | if (timeout_ms != INFINITE) | |
1329 | timeout_ms -= elapsed; | |
1330 | goto count_children; | |
1331 | } | |
1332 | } | |
c519b5e1 | 1333 | |
6cdfb6e6 RS |
1334 | return nr; |
1335 | } | |
1336 | ||
c519b5e1 | 1337 | /* Substitute for certain kill () operations */ |
b2fc9f3d GV |
1338 | |
1339 | static BOOL CALLBACK | |
42c95ffb | 1340 | find_child_console (HWND hwnd, LPARAM arg) |
b2fc9f3d | 1341 | { |
42c95ffb | 1342 | child_process * cp = (child_process *) arg; |
b2fc9f3d GV |
1343 | DWORD thread_id; |
1344 | DWORD process_id; | |
1345 | ||
1346 | thread_id = GetWindowThreadProcessId (hwnd, &process_id); | |
1347 | if (process_id == cp->procinfo.dwProcessId) | |
1348 | { | |
1349 | char window_class[32]; | |
1350 | ||
1351 | GetClassName (hwnd, window_class, sizeof (window_class)); | |
1352 | if (strcmp (window_class, | |
1353 | (os_subtype == OS_WIN95) | |
1354 | ? "tty" | |
1355 | : "ConsoleWindowClass") == 0) | |
1356 | { | |
1357 | cp->hwnd = hwnd; | |
1358 | return FALSE; | |
1359 | } | |
1360 | } | |
1361 | /* keep looking */ | |
1362 | return TRUE; | |
1363 | } | |
1364 | ||
6cdfb6e6 | 1365 | int |
c519b5e1 | 1366 | sys_kill (int pid, int sig) |
6cdfb6e6 RS |
1367 | { |
1368 | child_process *cp; | |
c519b5e1 GV |
1369 | HANDLE proc_hand; |
1370 | int need_to_free = 0; | |
1371 | int rc = 0; | |
6cdfb6e6 RS |
1372 | |
1373 | /* Only handle signals that will result in the process dying */ | |
1374 | if (sig != SIGINT && sig != SIGKILL && sig != SIGQUIT && sig != SIGHUP) | |
1375 | { | |
1376 | errno = EINVAL; | |
1377 | return -1; | |
1378 | } | |
c519b5e1 | 1379 | |
6cdfb6e6 RS |
1380 | cp = find_child_pid (pid); |
1381 | if (cp == NULL) | |
1382 | { | |
c519b5e1 GV |
1383 | proc_hand = OpenProcess (PROCESS_TERMINATE, 0, pid); |
1384 | if (proc_hand == NULL) | |
1385 | { | |
1386 | errno = EPERM; | |
1387 | return -1; | |
1388 | } | |
1389 | need_to_free = 1; | |
1390 | } | |
1391 | else | |
1392 | { | |
1393 | proc_hand = cp->procinfo.hProcess; | |
1394 | pid = cp->procinfo.dwProcessId; | |
b2fc9f3d GV |
1395 | |
1396 | /* Try to locate console window for process. */ | |
1397 | EnumWindows (find_child_console, (LPARAM) cp); | |
6cdfb6e6 RS |
1398 | } |
1399 | ||
a55a5f3c | 1400 | if (sig == SIGINT || sig == SIGQUIT) |
6cdfb6e6 | 1401 | { |
b2fc9f3d GV |
1402 | if (NILP (Vw32_start_process_share_console) && cp && cp->hwnd) |
1403 | { | |
1404 | BYTE control_scan_code = (BYTE) MapVirtualKey (VK_CONTROL, 0); | |
a55a5f3c AI |
1405 | /* Fake Ctrl-C for SIGINT, and Ctrl-Break for SIGQUIT. */ |
1406 | BYTE vk_break_code = (sig == SIGINT) ? 'C' : VK_CANCEL; | |
b2fc9f3d GV |
1407 | BYTE break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0); |
1408 | HWND foreground_window; | |
1409 | ||
1410 | if (break_scan_code == 0) | |
1411 | { | |
a55a5f3c | 1412 | /* Fake Ctrl-C for SIGQUIT if we can't manage Ctrl-Break. */ |
b2fc9f3d GV |
1413 | vk_break_code = 'C'; |
1414 | break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0); | |
1415 | } | |
1416 | ||
1417 | foreground_window = GetForegroundWindow (); | |
f446016f | 1418 | if (foreground_window) |
b2fc9f3d | 1419 | { |
f446016f AI |
1420 | /* NT 5.0, and apparently also Windows 98, will not allow |
1421 | a Window to be set to foreground directly without the | |
1422 | user's involvement. The workaround is to attach | |
1423 | ourselves to the thread that owns the foreground | |
1424 | window, since that is the only thread that can set the | |
1425 | foreground window. */ | |
1426 | DWORD foreground_thread, child_thread; | |
1427 | foreground_thread = | |
1428 | GetWindowThreadProcessId (foreground_window, NULL); | |
1429 | if (foreground_thread == GetCurrentThreadId () | |
1430 | || !AttachThreadInput (GetCurrentThreadId (), | |
1431 | foreground_thread, TRUE)) | |
1432 | foreground_thread = 0; | |
1433 | ||
1434 | child_thread = GetWindowThreadProcessId (cp->hwnd, NULL); | |
1435 | if (child_thread == GetCurrentThreadId () | |
1436 | || !AttachThreadInput (GetCurrentThreadId (), | |
1437 | child_thread, TRUE)) | |
1438 | child_thread = 0; | |
1439 | ||
1440 | /* Set the foreground window to the child. */ | |
1441 | if (SetForegroundWindow (cp->hwnd)) | |
1442 | { | |
1443 | /* Generate keystrokes as if user had typed Ctrl-Break or | |
1444 | Ctrl-C. */ | |
1445 | keybd_event (VK_CONTROL, control_scan_code, 0, 0); | |
1446 | keybd_event (vk_break_code, break_scan_code, | |
1447 | (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY), 0); | |
1448 | keybd_event (vk_break_code, break_scan_code, | |
1449 | (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY) | |
1450 | | KEYEVENTF_KEYUP, 0); | |
1451 | keybd_event (VK_CONTROL, control_scan_code, | |
1452 | KEYEVENTF_KEYUP, 0); | |
1453 | ||
1454 | /* Sleep for a bit to give time for Emacs frame to respond | |
1455 | to focus change events (if Emacs was active app). */ | |
1456 | Sleep (100); | |
1457 | ||
1458 | SetForegroundWindow (foreground_window); | |
1459 | } | |
1460 | /* Detach from the foreground and child threads now that | |
1461 | the foreground switching is over. */ | |
1462 | if (foreground_thread) | |
1463 | AttachThreadInput (GetCurrentThreadId (), | |
1464 | foreground_thread, FALSE); | |
1465 | if (child_thread) | |
1466 | AttachThreadInput (GetCurrentThreadId (), | |
1467 | child_thread, FALSE); | |
1468 | } | |
1469 | } | |
c519b5e1 | 1470 | /* Ctrl-Break is NT equivalent of SIGINT. */ |
b2fc9f3d | 1471 | else if (!GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, pid)) |
6cdfb6e6 | 1472 | { |
c519b5e1 | 1473 | DebPrint (("sys_kill.GenerateConsoleCtrlEvent return %d " |
6cdfb6e6 RS |
1474 | "for pid %lu\n", GetLastError (), pid)); |
1475 | errno = EINVAL; | |
c519b5e1 | 1476 | rc = -1; |
80874ef7 | 1477 | } |
6cdfb6e6 RS |
1478 | } |
1479 | else | |
1480 | { | |
b2fc9f3d GV |
1481 | if (NILP (Vw32_start_process_share_console) && cp && cp->hwnd) |
1482 | { | |
1483 | #if 1 | |
1484 | if (os_subtype == OS_WIN95) | |
1485 | { | |
1486 | /* | |
1487 | Another possibility is to try terminating the VDM out-right by | |
1488 | calling the Shell VxD (id 0x17) V86 interface, function #4 | |
1489 | "SHELL_Destroy_VM", ie. | |
1490 | ||
1491 | mov edx,4 | |
1492 | mov ebx,vm_handle | |
1493 | call shellapi | |
1494 | ||
1495 | First need to determine the current VM handle, and then arrange for | |
1496 | the shellapi call to be made from the system vm (by using | |
1497 | Switch_VM_and_callback). | |
1498 | ||
1499 | Could try to invoke DestroyVM through CallVxD. | |
1500 | ||
1501 | */ | |
ef79fbba GV |
1502 | #if 0 |
1503 | /* On Win95, posting WM_QUIT causes the 16-bit subsystem | |
1504 | to hang when cmdproxy is used in conjunction with | |
1505 | command.com for an interactive shell. Posting | |
1506 | WM_CLOSE pops up a dialog that, when Yes is selected, | |
1507 | does the same thing. TerminateProcess is also less | |
1508 | than ideal in that subprocesses tend to stick around | |
1509 | until the machine is shutdown, but at least it | |
1510 | doesn't freeze the 16-bit subsystem. */ | |
b2fc9f3d | 1511 | PostMessage (cp->hwnd, WM_QUIT, 0xff, 0); |
ef79fbba GV |
1512 | #endif |
1513 | if (!TerminateProcess (proc_hand, 0xff)) | |
1514 | { | |
1515 | DebPrint (("sys_kill.TerminateProcess returned %d " | |
1516 | "for pid %lu\n", GetLastError (), pid)); | |
1517 | errno = EINVAL; | |
1518 | rc = -1; | |
1519 | } | |
b2fc9f3d GV |
1520 | } |
1521 | else | |
1522 | #endif | |
1523 | PostMessage (cp->hwnd, WM_CLOSE, 0, 0); | |
1524 | } | |
fbd6baed | 1525 | /* Kill the process. On W32 this doesn't kill child processes |
8eae7766 | 1526 | so it doesn't work very well for shells which is why it's not |
b2fc9f3d GV |
1527 | used in every case. */ |
1528 | else if (!TerminateProcess (proc_hand, 0xff)) | |
6cdfb6e6 | 1529 | { |
c519b5e1 | 1530 | DebPrint (("sys_kill.TerminateProcess returned %d " |
6cdfb6e6 RS |
1531 | "for pid %lu\n", GetLastError (), pid)); |
1532 | errno = EINVAL; | |
c519b5e1 | 1533 | rc = -1; |
6cdfb6e6 RS |
1534 | } |
1535 | } | |
c519b5e1 GV |
1536 | |
1537 | if (need_to_free) | |
1538 | CloseHandle (proc_hand); | |
1539 | ||
1540 | return rc; | |
6cdfb6e6 RS |
1541 | } |
1542 | ||
09522567 | 1543 | /* extern int report_file_error (char *, Lisp_Object); */ |
c519b5e1 GV |
1544 | |
1545 | /* The following two routines are used to manipulate stdin, stdout, and | |
1546 | stderr of our child processes. | |
1547 | ||
1548 | Assuming that in, out, and err are *not* inheritable, we make them | |
1549 | stdin, stdout, and stderr of the child as follows: | |
1550 | ||
1551 | - Save the parent's current standard handles. | |
1552 | - Set the std handles to inheritable duplicates of the ones being passed in. | |
1553 | (Note that _get_osfhandle() is an io.h procedure that retrieves the | |
1554 | NT file handle for a crt file descriptor.) | |
1555 | - Spawn the child, which inherits in, out, and err as stdin, | |
1556 | stdout, and stderr. (see Spawnve) | |
1557 | - Close the std handles passed to the child. | |
1558 | - Reset the parent's standard handles to the saved handles. | |
1559 | (see reset_standard_handles) | |
1560 | We assume that the caller closes in, out, and err after calling us. */ | |
1561 | ||
1562 | void | |
1563 | prepare_standard_handles (int in, int out, int err, HANDLE handles[3]) | |
6cdfb6e6 | 1564 | { |
c519b5e1 GV |
1565 | HANDLE parent; |
1566 | HANDLE newstdin, newstdout, newstderr; | |
1567 | ||
1568 | parent = GetCurrentProcess (); | |
1569 | ||
1570 | handles[0] = GetStdHandle (STD_INPUT_HANDLE); | |
1571 | handles[1] = GetStdHandle (STD_OUTPUT_HANDLE); | |
1572 | handles[2] = GetStdHandle (STD_ERROR_HANDLE); | |
1573 | ||
1574 | /* make inheritable copies of the new handles */ | |
1575 | if (!DuplicateHandle (parent, | |
1576 | (HANDLE) _get_osfhandle (in), | |
1577 | parent, | |
1578 | &newstdin, | |
1579 | 0, | |
1580 | TRUE, | |
1581 | DUPLICATE_SAME_ACCESS)) | |
1582 | report_file_error ("Duplicating input handle for child", Qnil); | |
6cdfb6e6 | 1583 | |
c519b5e1 GV |
1584 | if (!DuplicateHandle (parent, |
1585 | (HANDLE) _get_osfhandle (out), | |
1586 | parent, | |
1587 | &newstdout, | |
1588 | 0, | |
1589 | TRUE, | |
1590 | DUPLICATE_SAME_ACCESS)) | |
1591 | report_file_error ("Duplicating output handle for child", Qnil); | |
6cdfb6e6 | 1592 | |
c519b5e1 GV |
1593 | if (!DuplicateHandle (parent, |
1594 | (HANDLE) _get_osfhandle (err), | |
1595 | parent, | |
1596 | &newstderr, | |
1597 | 0, | |
1598 | TRUE, | |
1599 | DUPLICATE_SAME_ACCESS)) | |
1600 | report_file_error ("Duplicating error handle for child", Qnil); | |
1601 | ||
1602 | /* and store them as our std handles */ | |
1603 | if (!SetStdHandle (STD_INPUT_HANDLE, newstdin)) | |
1604 | report_file_error ("Changing stdin handle", Qnil); | |
6cdfb6e6 | 1605 | |
c519b5e1 GV |
1606 | if (!SetStdHandle (STD_OUTPUT_HANDLE, newstdout)) |
1607 | report_file_error ("Changing stdout handle", Qnil); | |
1608 | ||
1609 | if (!SetStdHandle (STD_ERROR_HANDLE, newstderr)) | |
1610 | report_file_error ("Changing stderr handle", Qnil); | |
1611 | } | |
1612 | ||
1613 | void | |
1614 | reset_standard_handles (int in, int out, int err, HANDLE handles[3]) | |
1615 | { | |
1616 | /* close the duplicated handles passed to the child */ | |
1617 | CloseHandle (GetStdHandle (STD_INPUT_HANDLE)); | |
1618 | CloseHandle (GetStdHandle (STD_OUTPUT_HANDLE)); | |
1619 | CloseHandle (GetStdHandle (STD_ERROR_HANDLE)); | |
1620 | ||
1621 | /* now restore parent's saved std handles */ | |
1622 | SetStdHandle (STD_INPUT_HANDLE, handles[0]); | |
1623 | SetStdHandle (STD_OUTPUT_HANDLE, handles[1]); | |
1624 | SetStdHandle (STD_ERROR_HANDLE, handles[2]); | |
6cdfb6e6 | 1625 | } |
c519b5e1 | 1626 | |
b2fc9f3d GV |
1627 | void |
1628 | set_process_dir (char * dir) | |
1629 | { | |
1630 | process_dir = dir; | |
1631 | } | |
1632 | ||
a11e68d0 RS |
1633 | #ifdef HAVE_SOCKETS |
1634 | ||
1635 | /* To avoid problems with winsock implementations that work over dial-up | |
1636 | connections causing or requiring a connection to exist while Emacs is | |
1637 | running, Emacs no longer automatically loads winsock on startup if it | |
1638 | is present. Instead, it will be loaded when open-network-stream is | |
1639 | first called. | |
1640 | ||
1641 | To allow full control over when winsock is loaded, we provide these | |
1642 | two functions to dynamically load and unload winsock. This allows | |
1643 | dial-up users to only be connected when they actually need to use | |
1644 | socket services. */ | |
1645 | ||
1646 | /* From nt.c */ | |
1647 | extern HANDLE winsock_lib; | |
1648 | extern BOOL term_winsock (void); | |
1649 | extern BOOL init_winsock (int load_now); | |
1650 | ||
1651 | extern Lisp_Object Vsystem_name; | |
1652 | ||
fbd6baed | 1653 | DEFUN ("w32-has-winsock", Fw32_has_winsock, Sw32_has_winsock, 0, 1, 0, |
33f09670 JR |
1654 | doc: /* Test for presence of the Windows socket library `winsock'. |
1655 | Returns non-nil if winsock support is present, nil otherwise. | |
1656 | ||
1657 | If the optional argument LOAD-NOW is non-nil, the winsock library is | |
1658 | also loaded immediately if not already loaded. If winsock is loaded, | |
1659 | the winsock local hostname is returned (since this may be different from | |
1660 | the value of `system-name' and should supplant it), otherwise t is | |
1661 | returned to indicate winsock support is present. */) | |
a11e68d0 RS |
1662 | (load_now) |
1663 | Lisp_Object load_now; | |
1664 | { | |
1665 | int have_winsock; | |
1666 | ||
1667 | have_winsock = init_winsock (!NILP (load_now)); | |
1668 | if (have_winsock) | |
1669 | { | |
1670 | if (winsock_lib != NULL) | |
1671 | { | |
1672 | /* Return new value for system-name. The best way to do this | |
1673 | is to call init_system_name, saving and restoring the | |
1674 | original value to avoid side-effects. */ | |
1675 | Lisp_Object orig_hostname = Vsystem_name; | |
1676 | Lisp_Object hostname; | |
1677 | ||
1678 | init_system_name (); | |
1679 | hostname = Vsystem_name; | |
1680 | Vsystem_name = orig_hostname; | |
1681 | return hostname; | |
1682 | } | |
1683 | return Qt; | |
1684 | } | |
1685 | return Qnil; | |
1686 | } | |
1687 | ||
fbd6baed | 1688 | DEFUN ("w32-unload-winsock", Fw32_unload_winsock, Sw32_unload_winsock, |
a11e68d0 | 1689 | 0, 0, 0, |
33f09670 JR |
1690 | doc: /* Unload the Windows socket library `winsock' if loaded. |
1691 | This is provided to allow dial-up socket connections to be disconnected | |
1692 | when no longer needed. Returns nil without unloading winsock if any | |
1693 | socket connections still exist. */) | |
a11e68d0 RS |
1694 | () |
1695 | { | |
1696 | return term_winsock () ? Qt : Qnil; | |
1697 | } | |
1698 | ||
1699 | #endif /* HAVE_SOCKETS */ | |
1700 | ||
93fdf2f8 | 1701 | \f |
b2fc9f3d GV |
1702 | /* Some miscellaneous functions that are Windows specific, but not GUI |
1703 | specific (ie. are applicable in terminal or batch mode as well). */ | |
1704 | ||
1705 | /* lifted from fileio.c */ | |
1706 | #define CORRECT_DIR_SEPS(s) \ | |
1707 | do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \ | |
1708 | else unixtodos_filename (s); \ | |
1709 | } while (0) | |
1710 | ||
1711 | DEFUN ("w32-short-file-name", Fw32_short_file_name, Sw32_short_file_name, 1, 1, 0, | |
33f09670 JR |
1712 | doc: /* Return the short file name version (8.3) of the full path of FILENAME. |
1713 | If FILENAME does not exist, return nil. | |
1714 | All path elements in FILENAME are converted to their short names. */) | |
b2fc9f3d GV |
1715 | (filename) |
1716 | Lisp_Object filename; | |
1717 | { | |
1718 | char shortname[MAX_PATH]; | |
1719 | ||
b7826503 | 1720 | CHECK_STRING (filename); |
b2fc9f3d GV |
1721 | |
1722 | /* first expand it. */ | |
1723 | filename = Fexpand_file_name (filename, Qnil); | |
1724 | ||
1725 | /* luckily, this returns the short version of each element in the path. */ | |
d5db4077 | 1726 | if (GetShortPathName (SDATA (filename), shortname, MAX_PATH) == 0) |
b2fc9f3d GV |
1727 | return Qnil; |
1728 | ||
1729 | CORRECT_DIR_SEPS (shortname); | |
1730 | ||
1731 | return build_string (shortname); | |
1732 | } | |
1733 | ||
1734 | ||
1735 | DEFUN ("w32-long-file-name", Fw32_long_file_name, Sw32_long_file_name, | |
1736 | 1, 1, 0, | |
33f09670 JR |
1737 | doc: /* Return the long file name version of the full path of FILENAME. |
1738 | If FILENAME does not exist, return nil. | |
1739 | All path elements in FILENAME are converted to their long names. */) | |
b2fc9f3d GV |
1740 | (filename) |
1741 | Lisp_Object filename; | |
1742 | { | |
1743 | char longname[ MAX_PATH ]; | |
1744 | ||
b7826503 | 1745 | CHECK_STRING (filename); |
b2fc9f3d GV |
1746 | |
1747 | /* first expand it. */ | |
1748 | filename = Fexpand_file_name (filename, Qnil); | |
1749 | ||
d5db4077 | 1750 | if (!w32_get_long_filename (SDATA (filename), longname, MAX_PATH)) |
b2fc9f3d GV |
1751 | return Qnil; |
1752 | ||
1753 | CORRECT_DIR_SEPS (longname); | |
1754 | ||
1755 | return build_string (longname); | |
1756 | } | |
1757 | ||
33f09670 JR |
1758 | DEFUN ("w32-set-process-priority", Fw32_set_process_priority, |
1759 | Sw32_set_process_priority, 2, 2, 0, | |
1760 | doc: /* Set the priority of PROCESS to PRIORITY. | |
1761 | If PROCESS is nil, the priority of Emacs is changed, otherwise the | |
1762 | priority of the process whose pid is PROCESS is changed. | |
1763 | PRIORITY should be one of the symbols high, normal, or low; | |
1764 | any other symbol will be interpreted as normal. | |
1765 | ||
1766 | If successful, the return value is t, otherwise nil. */) | |
b2fc9f3d GV |
1767 | (process, priority) |
1768 | Lisp_Object process, priority; | |
1769 | { | |
1770 | HANDLE proc_handle = GetCurrentProcess (); | |
1771 | DWORD priority_class = NORMAL_PRIORITY_CLASS; | |
1772 | Lisp_Object result = Qnil; | |
1773 | ||
b7826503 | 1774 | CHECK_SYMBOL (priority); |
b2fc9f3d GV |
1775 | |
1776 | if (!NILP (process)) | |
1777 | { | |
1778 | DWORD pid; | |
1779 | child_process *cp; | |
1780 | ||
b7826503 | 1781 | CHECK_NUMBER (process); |
b2fc9f3d GV |
1782 | |
1783 | /* Allow pid to be an internally generated one, or one obtained | |
1784 | externally. This is necessary because real pids on Win95 are | |
1785 | negative. */ | |
1786 | ||
1787 | pid = XINT (process); | |
1788 | cp = find_child_pid (pid); | |
1789 | if (cp != NULL) | |
1790 | pid = cp->procinfo.dwProcessId; | |
1791 | ||
1792 | proc_handle = OpenProcess (PROCESS_SET_INFORMATION, FALSE, pid); | |
1793 | } | |
1794 | ||
1795 | if (EQ (priority, Qhigh)) | |
1796 | priority_class = HIGH_PRIORITY_CLASS; | |
1797 | else if (EQ (priority, Qlow)) | |
1798 | priority_class = IDLE_PRIORITY_CLASS; | |
1799 | ||
1800 | if (proc_handle != NULL) | |
1801 | { | |
1802 | if (SetPriorityClass (proc_handle, priority_class)) | |
1803 | result = Qt; | |
1804 | if (!NILP (process)) | |
1805 | CloseHandle (proc_handle); | |
1806 | } | |
1807 | ||
1808 | return result; | |
1809 | } | |
1810 | ||
1811 | ||
33f09670 JR |
1812 | DEFUN ("w32-get-locale-info", Fw32_get_locale_info, |
1813 | Sw32_get_locale_info, 1, 2, 0, | |
1814 | doc: /* Return information about the Windows locale LCID. | |
1815 | By default, return a three letter locale code which encodes the default | |
1816 | language as the first two characters, and the country or regionial variant | |
1817 | as the third letter. For example, ENU refers to `English (United States)', | |
1818 | while ENC means `English (Canadian)'. | |
1819 | ||
1820 | If the optional argument LONGFORM is t, the long form of the locale | |
1821 | name is returned, e.g. `English (United States)' instead; if LONGFORM | |
1822 | is a number, it is interpreted as an LCTYPE constant and the corresponding | |
1823 | locale information is returned. | |
1824 | ||
1825 | If LCID (a 16-bit number) is not a valid locale, the result is nil. */) | |
b2fc9f3d GV |
1826 | (lcid, longform) |
1827 | Lisp_Object lcid, longform; | |
1828 | { | |
1829 | int got_abbrev; | |
1830 | int got_full; | |
1831 | char abbrev_name[32] = { 0 }; | |
1832 | char full_name[256] = { 0 }; | |
1833 | ||
b7826503 | 1834 | CHECK_NUMBER (lcid); |
b2fc9f3d GV |
1835 | |
1836 | if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED)) | |
1837 | return Qnil; | |
1838 | ||
1839 | if (NILP (longform)) | |
1840 | { | |
1841 | got_abbrev = GetLocaleInfo (XINT (lcid), | |
1842 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
1843 | abbrev_name, sizeof (abbrev_name)); | |
1844 | if (got_abbrev) | |
1845 | return build_string (abbrev_name); | |
1846 | } | |
0eaf5926 | 1847 | else if (EQ (longform, Qt)) |
b2fc9f3d GV |
1848 | { |
1849 | got_full = GetLocaleInfo (XINT (lcid), | |
1850 | LOCALE_SLANGUAGE | LOCALE_USE_CP_ACP, | |
1851 | full_name, sizeof (full_name)); | |
1852 | if (got_full) | |
1853 | return build_string (full_name); | |
1854 | } | |
0eaf5926 GV |
1855 | else if (NUMBERP (longform)) |
1856 | { | |
1857 | got_full = GetLocaleInfo (XINT (lcid), | |
1858 | XINT (longform), | |
1859 | full_name, sizeof (full_name)); | |
1860 | if (got_full) | |
1861 | return make_unibyte_string (full_name, got_full); | |
1862 | } | |
b2fc9f3d GV |
1863 | |
1864 | return Qnil; | |
1865 | } | |
1866 | ||
1867 | ||
33f09670 JR |
1868 | DEFUN ("w32-get-current-locale-id", Fw32_get_current_locale_id, |
1869 | Sw32_get_current_locale_id, 0, 0, 0, | |
1870 | doc: /* Return Windows locale id for current locale setting. | |
1871 | This is a numerical value; use `w32-get-locale-info' to convert to a | |
1872 | human-readable form. */) | |
b2fc9f3d GV |
1873 | () |
1874 | { | |
1875 | return make_number (GetThreadLocale ()); | |
1876 | } | |
1877 | ||
ef79fbba GV |
1878 | DWORD int_from_hex (char * s) |
1879 | { | |
1880 | DWORD val = 0; | |
1881 | static char hex[] = "0123456789abcdefABCDEF"; | |
1882 | char * p; | |
1883 | ||
1884 | while (*s && (p = strchr(hex, *s)) != NULL) | |
1885 | { | |
1886 | unsigned digit = p - hex; | |
1887 | if (digit > 15) | |
1888 | digit -= 6; | |
1889 | val = val * 16 + digit; | |
1890 | s++; | |
1891 | } | |
1892 | return val; | |
1893 | } | |
1894 | ||
1895 | /* We need to build a global list, since the EnumSystemLocale callback | |
1896 | function isn't given a context pointer. */ | |
1897 | Lisp_Object Vw32_valid_locale_ids; | |
1898 | ||
1899 | BOOL CALLBACK enum_locale_fn (LPTSTR localeNum) | |
1900 | { | |
1901 | DWORD id = int_from_hex (localeNum); | |
1902 | Vw32_valid_locale_ids = Fcons (make_number (id), Vw32_valid_locale_ids); | |
1903 | return TRUE; | |
1904 | } | |
1905 | ||
33f09670 JR |
1906 | DEFUN ("w32-get-valid-locale-ids", Fw32_get_valid_locale_ids, |
1907 | Sw32_get_valid_locale_ids, 0, 0, 0, | |
1908 | doc: /* Return list of all valid Windows locale ids. | |
1909 | Each id is a numerical value; use `w32-get-locale-info' to convert to a | |
1910 | human-readable form. */) | |
ef79fbba GV |
1911 | () |
1912 | { | |
1913 | Vw32_valid_locale_ids = Qnil; | |
1914 | ||
1915 | EnumSystemLocales (enum_locale_fn, LCID_SUPPORTED); | |
1916 | ||
1917 | Vw32_valid_locale_ids = Fnreverse (Vw32_valid_locale_ids); | |
1918 | return Vw32_valid_locale_ids; | |
1919 | } | |
1920 | ||
b2fc9f3d GV |
1921 | |
1922 | DEFUN ("w32-get-default-locale-id", Fw32_get_default_locale_id, Sw32_get_default_locale_id, 0, 1, 0, | |
33f09670 JR |
1923 | doc: /* Return Windows locale id for default locale setting. |
1924 | By default, the system default locale setting is returned; if the optional | |
1925 | parameter USERP is non-nil, the user default locale setting is returned. | |
1926 | This is a numerical value; use `w32-get-locale-info' to convert to a | |
1927 | human-readable form. */) | |
b2fc9f3d GV |
1928 | (userp) |
1929 | Lisp_Object userp; | |
1930 | { | |
1931 | if (NILP (userp)) | |
1932 | return make_number (GetSystemDefaultLCID ()); | |
1933 | return make_number (GetUserDefaultLCID ()); | |
1934 | } | |
1935 | ||
1936 | ||
1937 | DEFUN ("w32-set-current-locale", Fw32_set_current_locale, Sw32_set_current_locale, 1, 1, 0, | |
33f09670 JR |
1938 | doc: /* Make Windows locale LCID be the current locale setting for Emacs. |
1939 | If successful, the new locale id is returned, otherwise nil. */) | |
b2fc9f3d GV |
1940 | (lcid) |
1941 | Lisp_Object lcid; | |
1942 | { | |
b7826503 | 1943 | CHECK_NUMBER (lcid); |
b2fc9f3d GV |
1944 | |
1945 | if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED)) | |
1946 | return Qnil; | |
1947 | ||
1948 | if (!SetThreadLocale (XINT (lcid))) | |
1949 | return Qnil; | |
1950 | ||
ef79fbba GV |
1951 | /* Need to set input thread locale if present. */ |
1952 | if (dwWindowsThreadId) | |
1953 | /* Reply is not needed. */ | |
1954 | PostThreadMessage (dwWindowsThreadId, WM_EMACS_SETLOCALE, XINT (lcid), 0); | |
1955 | ||
b2fc9f3d GV |
1956 | return make_number (GetThreadLocale ()); |
1957 | } | |
1958 | ||
0eaf5926 GV |
1959 | |
1960 | /* We need to build a global list, since the EnumCodePages callback | |
1961 | function isn't given a context pointer. */ | |
1962 | Lisp_Object Vw32_valid_codepages; | |
1963 | ||
1964 | BOOL CALLBACK enum_codepage_fn (LPTSTR codepageNum) | |
1965 | { | |
1966 | DWORD id = atoi (codepageNum); | |
1967 | Vw32_valid_codepages = Fcons (make_number (id), Vw32_valid_codepages); | |
1968 | return TRUE; | |
1969 | } | |
1970 | ||
33f09670 JR |
1971 | DEFUN ("w32-get-valid-codepages", Fw32_get_valid_codepages, |
1972 | Sw32_get_valid_codepages, 0, 0, 0, | |
1973 | doc: /* Return list of all valid Windows codepages. */) | |
0eaf5926 GV |
1974 | () |
1975 | { | |
1976 | Vw32_valid_codepages = Qnil; | |
1977 | ||
1978 | EnumSystemCodePages (enum_codepage_fn, CP_SUPPORTED); | |
1979 | ||
1980 | Vw32_valid_codepages = Fnreverse (Vw32_valid_codepages); | |
1981 | return Vw32_valid_codepages; | |
1982 | } | |
1983 | ||
1984 | ||
33f09670 JR |
1985 | DEFUN ("w32-get-console-codepage", Fw32_get_console_codepage, |
1986 | Sw32_get_console_codepage, 0, 0, 0, | |
1987 | doc: /* Return current Windows codepage for console input. */) | |
0eaf5926 GV |
1988 | () |
1989 | { | |
1990 | return make_number (GetConsoleCP ()); | |
1991 | } | |
1992 | ||
1993 | ||
33f09670 JR |
1994 | DEFUN ("w32-set-console-codepage", Fw32_set_console_codepage, |
1995 | Sw32_set_console_codepage, 1, 1, 0, | |
1996 | doc: /* Make Windows codepage CP be the current codepage setting for Emacs. | |
1997 | The codepage setting affects keyboard input and display in tty mode. | |
1998 | If successful, the new CP is returned, otherwise nil. */) | |
0eaf5926 GV |
1999 | (cp) |
2000 | Lisp_Object cp; | |
2001 | { | |
b7826503 | 2002 | CHECK_NUMBER (cp); |
0eaf5926 GV |
2003 | |
2004 | if (!IsValidCodePage (XINT (cp))) | |
2005 | return Qnil; | |
2006 | ||
2007 | if (!SetConsoleCP (XINT (cp))) | |
2008 | return Qnil; | |
2009 | ||
2010 | return make_number (GetConsoleCP ()); | |
2011 | } | |
2012 | ||
2013 | ||
33f09670 JR |
2014 | DEFUN ("w32-get-console-output-codepage", Fw32_get_console_output_codepage, |
2015 | Sw32_get_console_output_codepage, 0, 0, 0, | |
2016 | doc: /* Return current Windows codepage for console output. */) | |
0eaf5926 GV |
2017 | () |
2018 | { | |
2019 | return make_number (GetConsoleOutputCP ()); | |
2020 | } | |
2021 | ||
2022 | ||
33f09670 JR |
2023 | DEFUN ("w32-set-console-output-codepage", Fw32_set_console_output_codepage, |
2024 | Sw32_set_console_output_codepage, 1, 1, 0, | |
2025 | doc: /* Make Windows codepage CP be the current codepage setting for Emacs. | |
2026 | The codepage setting affects keyboard input and display in tty mode. | |
2027 | If successful, the new CP is returned, otherwise nil. */) | |
0eaf5926 GV |
2028 | (cp) |
2029 | Lisp_Object cp; | |
2030 | { | |
b7826503 | 2031 | CHECK_NUMBER (cp); |
0eaf5926 GV |
2032 | |
2033 | if (!IsValidCodePage (XINT (cp))) | |
2034 | return Qnil; | |
2035 | ||
2036 | if (!SetConsoleOutputCP (XINT (cp))) | |
2037 | return Qnil; | |
2038 | ||
2039 | return make_number (GetConsoleOutputCP ()); | |
2040 | } | |
2041 | ||
2042 | ||
33f09670 JR |
2043 | DEFUN ("w32-get-codepage-charset", Fw32_get_codepage_charset, |
2044 | Sw32_get_codepage_charset, 1, 1, 0, | |
2045 | doc: /* Return charset of codepage CP. | |
2046 | Returns nil if the codepage is not valid. */) | |
0eaf5926 GV |
2047 | (cp) |
2048 | Lisp_Object cp; | |
2049 | { | |
2050 | CHARSETINFO info; | |
2051 | ||
b7826503 | 2052 | CHECK_NUMBER (cp); |
0eaf5926 GV |
2053 | |
2054 | if (!IsValidCodePage (XINT (cp))) | |
2055 | return Qnil; | |
2056 | ||
2057 | if (TranslateCharsetInfo ((DWORD *) XINT (cp), &info, TCI_SRCCODEPAGE)) | |
2058 | return make_number (info.ciCharset); | |
2059 | ||
2060 | return Qnil; | |
2061 | } | |
2062 | ||
2063 | ||
33f09670 JR |
2064 | DEFUN ("w32-get-valid-keyboard-layouts", Fw32_get_valid_keyboard_layouts, |
2065 | Sw32_get_valid_keyboard_layouts, 0, 0, 0, | |
2066 | doc: /* Return list of Windows keyboard languages and layouts. | |
2067 | The return value is a list of pairs of language id and layout id. */) | |
0eaf5926 GV |
2068 | () |
2069 | { | |
2070 | int num_layouts = GetKeyboardLayoutList (0, NULL); | |
2071 | HKL * layouts = (HKL *) alloca (num_layouts * sizeof (HKL)); | |
2072 | Lisp_Object obj = Qnil; | |
2073 | ||
2074 | if (GetKeyboardLayoutList (num_layouts, layouts) == num_layouts) | |
2075 | { | |
2076 | while (--num_layouts >= 0) | |
2077 | { | |
2078 | DWORD kl = (DWORD) layouts[num_layouts]; | |
2079 | ||
2080 | obj = Fcons (Fcons (make_number (kl & 0xffff), | |
2081 | make_number ((kl >> 16) & 0xffff)), | |
2082 | obj); | |
2083 | } | |
2084 | } | |
2085 | ||
2086 | return obj; | |
2087 | } | |
2088 | ||
2089 | ||
33f09670 JR |
2090 | DEFUN ("w32-get-keyboard-layout", Fw32_get_keyboard_layout, |
2091 | Sw32_get_keyboard_layout, 0, 0, 0, | |
2092 | doc: /* Return current Windows keyboard language and layout. | |
2093 | The return value is the cons of the language id and the layout id. */) | |
0eaf5926 GV |
2094 | () |
2095 | { | |
2096 | DWORD kl = (DWORD) GetKeyboardLayout (dwWindowsThreadId); | |
2097 | ||
2098 | return Fcons (make_number (kl & 0xffff), | |
2099 | make_number ((kl >> 16) & 0xffff)); | |
2100 | } | |
2101 | ||
2102 | ||
33f09670 JR |
2103 | DEFUN ("w32-set-keyboard-layout", Fw32_set_keyboard_layout, |
2104 | Sw32_set_keyboard_layout, 1, 1, 0, | |
2105 | doc: /* Make LAYOUT be the current keyboard layout for Emacs. | |
2106 | The keyboard layout setting affects interpretation of keyboard input. | |
2107 | If successful, the new layout id is returned, otherwise nil. */) | |
0eaf5926 GV |
2108 | (layout) |
2109 | Lisp_Object layout; | |
2110 | { | |
2111 | DWORD kl; | |
2112 | ||
b7826503 | 2113 | CHECK_CONS (layout); |
f4532092 AI |
2114 | CHECK_NUMBER_CAR (layout); |
2115 | CHECK_NUMBER_CDR (layout); | |
0eaf5926 | 2116 | |
8e713be6 KR |
2117 | kl = (XINT (XCAR (layout)) & 0xffff) |
2118 | | (XINT (XCDR (layout)) << 16); | |
0eaf5926 GV |
2119 | |
2120 | /* Synchronize layout with input thread. */ | |
2121 | if (dwWindowsThreadId) | |
2122 | { | |
2123 | if (PostThreadMessage (dwWindowsThreadId, WM_EMACS_SETKEYBOARDLAYOUT, | |
2124 | (WPARAM) kl, 0)) | |
2125 | { | |
2126 | MSG msg; | |
2127 | GetMessage (&msg, NULL, WM_EMACS_DONE, WM_EMACS_DONE); | |
2128 | ||
2129 | if (msg.wParam == 0) | |
2130 | return Qnil; | |
2131 | } | |
2132 | } | |
2133 | else if (!ActivateKeyboardLayout ((HKL) kl, 0)) | |
2134 | return Qnil; | |
2135 | ||
2136 | return Fw32_get_keyboard_layout (); | |
2137 | } | |
2138 | ||
b2fc9f3d | 2139 | \f |
93fdf2f8 RS |
2140 | syms_of_ntproc () |
2141 | { | |
b2fc9f3d GV |
2142 | Qhigh = intern ("high"); |
2143 | Qlow = intern ("low"); | |
2144 | ||
a11e68d0 | 2145 | #ifdef HAVE_SOCKETS |
fbd6baed GV |
2146 | defsubr (&Sw32_has_winsock); |
2147 | defsubr (&Sw32_unload_winsock); | |
a11e68d0 | 2148 | #endif |
b2fc9f3d GV |
2149 | defsubr (&Sw32_short_file_name); |
2150 | defsubr (&Sw32_long_file_name); | |
2151 | defsubr (&Sw32_set_process_priority); | |
2152 | defsubr (&Sw32_get_locale_info); | |
2153 | defsubr (&Sw32_get_current_locale_id); | |
2154 | defsubr (&Sw32_get_default_locale_id); | |
ef79fbba | 2155 | defsubr (&Sw32_get_valid_locale_ids); |
b2fc9f3d | 2156 | defsubr (&Sw32_set_current_locale); |
a11e68d0 | 2157 | |
0eaf5926 GV |
2158 | defsubr (&Sw32_get_console_codepage); |
2159 | defsubr (&Sw32_set_console_codepage); | |
2160 | defsubr (&Sw32_get_console_output_codepage); | |
2161 | defsubr (&Sw32_set_console_output_codepage); | |
2162 | defsubr (&Sw32_get_valid_codepages); | |
2163 | defsubr (&Sw32_get_codepage_charset); | |
2164 | ||
2165 | defsubr (&Sw32_get_valid_keyboard_layouts); | |
2166 | defsubr (&Sw32_get_keyboard_layout); | |
2167 | defsubr (&Sw32_set_keyboard_layout); | |
2168 | ||
fbd6baed | 2169 | DEFVAR_LISP ("w32-quote-process-args", &Vw32_quote_process_args, |
33f09670 JR |
2170 | doc: /* Non-nil enables quoting of process arguments to ensure correct parsing. |
2171 | Because Windows does not directly pass argv arrays to child processes, | |
2172 | programs have to reconstruct the argv array by parsing the command | |
2173 | line string. For an argument to contain a space, it must be enclosed | |
2174 | in double quotes or it will be parsed as multiple arguments. | |
2175 | ||
2176 | If the value is a character, that character will be used to escape any | |
2177 | quote characters that appear, otherwise a suitable escape character | |
2178 | will be chosen based on the type of the program. */); | |
b2fc9f3d | 2179 | Vw32_quote_process_args = Qt; |
817abdf6 | 2180 | |
fbd6baed GV |
2181 | DEFVAR_LISP ("w32-start-process-show-window", |
2182 | &Vw32_start_process_show_window, | |
33f09670 JR |
2183 | doc: /* When nil, new child processes hide their windows. |
2184 | When non-nil, they show their window in the method of their choice. | |
2185 | This variable doesn't affect GUI applications, which will never be hidden. */); | |
fbd6baed | 2186 | Vw32_start_process_show_window = Qnil; |
0ecf7d36 | 2187 | |
b2fc9f3d GV |
2188 | DEFVAR_LISP ("w32-start-process-share-console", |
2189 | &Vw32_start_process_share_console, | |
33f09670 JR |
2190 | doc: /* When nil, new child processes are given a new console. |
2191 | When non-nil, they share the Emacs console; this has the limitation of | |
804d894a | 2192 | allowing only one DOS subprocess to run at a time (whether started directly |
33f09670 JR |
2193 | or indirectly by Emacs), and preventing Emacs from cleanly terminating the |
2194 | subprocess group, but may allow Emacs to interrupt a subprocess that doesn't | |
2195 | otherwise respond to interrupts from Emacs. */); | |
b2fc9f3d GV |
2196 | Vw32_start_process_share_console = Qnil; |
2197 | ||
82e7c0a9 AI |
2198 | DEFVAR_LISP ("w32-start-process-inherit-error-mode", |
2199 | &Vw32_start_process_inherit_error_mode, | |
33f09670 JR |
2200 | doc: /* When nil, new child processes revert to the default error mode. |
2201 | When non-nil, they inherit their error mode setting from Emacs, which stops | |
2202 | them blocking when trying to access unmounted drives etc. */); | |
82e7c0a9 AI |
2203 | Vw32_start_process_inherit_error_mode = Qt; |
2204 | ||
fbd6baed | 2205 | DEFVAR_INT ("w32-pipe-read-delay", &Vw32_pipe_read_delay, |
33f09670 JR |
2206 | doc: /* Forced delay before reading subprocess output. |
2207 | This is done to improve the buffering of subprocess output, by | |
2208 | avoiding the inefficiency of frequently reading small amounts of data. | |
2209 | ||
2210 | If positive, the value is the number of milliseconds to sleep before | |
2211 | reading the subprocess output. If negative, the magnitude is the number | |
2212 | of time slices to wait (effectively boosting the priority of the child | |
2213 | process temporarily). A value of zero disables waiting entirely. */); | |
fbd6baed | 2214 | Vw32_pipe_read_delay = 50; |
0c04091e | 2215 | |
fbd6baed | 2216 | DEFVAR_LISP ("w32-downcase-file-names", &Vw32_downcase_file_names, |
33f09670 JR |
2217 | doc: /* Non-nil means convert all-upper case file names to lower case. |
2218 | This applies when performing completions and file name expansion. | |
2219 | Note that the value of this setting also affects remote file names, | |
2220 | so you probably don't want to set to non-nil if you use case-sensitive | |
2221 | filesystems via ange-ftp. */); | |
fbd6baed | 2222 | Vw32_downcase_file_names = Qnil; |
b2fc9f3d GV |
2223 | |
2224 | #if 0 | |
2225 | DEFVAR_LISP ("w32-generate-fake-inodes", &Vw32_generate_fake_inodes, | |
33f09670 JR |
2226 | doc: /* Non-nil means attempt to fake realistic inode values. |
2227 | This works by hashing the truename of files, and should detect | |
2228 | aliasing between long and short (8.3 DOS) names, but can have | |
2229 | false positives because of hash collisions. Note that determing | |
2230 | the truename of a file can be slow. */); | |
b2fc9f3d GV |
2231 | Vw32_generate_fake_inodes = Qnil; |
2232 | #endif | |
2233 | ||
2234 | DEFVAR_LISP ("w32-get-true-file-attributes", &Vw32_get_true_file_attributes, | |
45de4a6f JB |
2235 | doc: /* Non-nil means determine accurate link count in `file-attributes'. |
2236 | Note that this option is only useful for files on NTFS volumes, where hard links | |
c7a1aae9 | 2237 | are supported. Moreover, it slows down `file-attributes' noticeably. */); |
09ed9d88 | 2238 | Vw32_get_true_file_attributes = Qt; |
93fdf2f8 | 2239 | } |
c519b5e1 | 2240 | /* end of ntproc.c */ |