Commit | Line | Data |
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b46a6a83 | 1 | /* Process support for GNU Emacs on the Microsoft Windows API. |
acaf905b | 2 | Copyright (C) 1992, 1995, 1999-2012 Free Software Foundation, Inc. |
6cdfb6e6 | 3 | |
3b7ad313 EN |
4 | This file is part of GNU Emacs. |
5 | ||
9ec0b715 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
3b7ad313 | 7 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
3b7ad313 EN |
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 | |
9ec0b715 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
6cdfb6e6 | 18 | |
9ec0b715 | 19 | /* |
6cdfb6e6 RS |
20 | Drew Bliss Oct 14, 1993 |
21 | Adapted from alarm.c by Tim Fleehart | |
22 | */ | |
23 | ||
24 | #include <stdio.h> | |
25 | #include <stdlib.h> | |
26 | #include <errno.h> | |
27 | #include <io.h> | |
c519b5e1 | 28 | #include <fcntl.h> |
6cdfb6e6 | 29 | #include <signal.h> |
51f635c4 | 30 | #include <sys/file.h> |
6cdfb6e6 | 31 | |
c519b5e1 | 32 | /* must include CRT headers *before* config.h */ |
4838e624 | 33 | #include <config.h> |
4838e624 | 34 | |
c519b5e1 GV |
35 | #undef signal |
36 | #undef wait | |
37 | #undef spawnve | |
38 | #undef select | |
39 | #undef kill | |
40 | ||
6cdfb6e6 | 41 | #include <windows.h> |
42c95ffb AI |
42 | #ifdef __GNUC__ |
43 | /* This definition is missing from mingw32 headers. */ | |
ed3751c8 | 44 | extern BOOL WINAPI IsValidLocale (LCID, DWORD); |
42c95ffb | 45 | #endif |
6cdfb6e6 | 46 | |
d613418b EZ |
47 | #ifdef HAVE_LANGINFO_CODESET |
48 | #include <nl_types.h> | |
49 | #include <langinfo.h> | |
50 | #endif | |
51 | ||
6cdfb6e6 | 52 | #include "lisp.h" |
489f9371 | 53 | #include "w32.h" |
b2fc9f3d | 54 | #include "w32heap.h" |
6cdfb6e6 | 55 | #include "systime.h" |
3d7eead0 GV |
56 | #include "syswait.h" |
57 | #include "process.h" | |
e7c15bba | 58 | #include "syssignal.h" |
ef79fbba | 59 | #include "w32term.h" |
f481eb31 | 60 | #include "dispextern.h" /* for xstrcasecmp */ |
b23077df | 61 | #include "coding.h" |
3d7eead0 | 62 | |
8747ac3f EZ |
63 | #define RVA_TO_PTR(var,section,filedata) \ |
64 | ((void *)((section)->PointerToRawData \ | |
65 | + ((DWORD)(var) - (section)->VirtualAddress) \ | |
66 | + (filedata).file_base)) | |
67 | ||
b2fc9f3d | 68 | Lisp_Object Qhigh, Qlow; |
817abdf6 | 69 | |
6cdfb6e6 | 70 | #ifdef EMACSDEBUG |
b56ceb92 JB |
71 | void |
72 | _DebPrint (const char *fmt, ...) | |
6cdfb6e6 | 73 | { |
c519b5e1 | 74 | char buf[1024]; |
6cdfb6e6 RS |
75 | va_list args; |
76 | ||
77 | va_start (args, fmt); | |
78 | vsprintf (buf, fmt, args); | |
79 | va_end (args); | |
80 | OutputDebugString (buf); | |
81 | } | |
82 | #endif | |
83 | ||
ed3751c8 | 84 | typedef void (_CALLBACK_ *signal_handler) (int); |
6cdfb6e6 RS |
85 | |
86 | /* Signal handlers...SIG_DFL == 0 so this is initialized correctly. */ | |
87 | static signal_handler sig_handlers[NSIG]; | |
88 | ||
89 | /* Fake signal implementation to record the SIGCHLD handler. */ | |
177c0ea7 | 90 | signal_handler |
c519b5e1 | 91 | sys_signal (int sig, signal_handler handler) |
6cdfb6e6 RS |
92 | { |
93 | signal_handler old; | |
177c0ea7 | 94 | |
6cdfb6e6 RS |
95 | if (sig != SIGCHLD) |
96 | { | |
97 | errno = EINVAL; | |
98 | return SIG_ERR; | |
99 | } | |
100 | old = sig_handlers[sig]; | |
101 | sig_handlers[sig] = handler; | |
102 | return old; | |
103 | } | |
104 | ||
3e6d6928 EZ |
105 | /* Emulate sigaction. */ |
106 | int | |
107 | sigaction (int sig, const struct sigaction *act, struct sigaction *oact) | |
108 | { | |
109 | signal_handler old; | |
110 | ||
111 | if (sig != SIGCHLD) | |
112 | { | |
113 | errno = EINVAL; | |
114 | return -1; | |
115 | } | |
116 | old = sig_handlers[sig]; | |
117 | if (act) | |
118 | sig_handlers[sig] = act->sa_handler; | |
119 | if (oact) | |
120 | { | |
121 | oact->sa_handler = old; | |
122 | oact->sa_flags = 0; | |
123 | oact->sa_mask = empty_mask; | |
124 | } | |
125 | return 0; | |
126 | } | |
127 | ||
c519b5e1 GV |
128 | /* Defined in <process.h> which conflicts with the local copy */ |
129 | #define _P_NOWAIT 1 | |
130 | ||
131 | /* Child process management list. */ | |
132 | int child_proc_count = 0; | |
133 | child_process child_procs[ MAX_CHILDREN ]; | |
134 | child_process *dead_child = NULL; | |
135 | ||
24f981c9 | 136 | static DWORD WINAPI reader_thread (void *arg); |
c519b5e1 | 137 | |
6cdfb6e6 | 138 | /* Find an unused process slot. */ |
c519b5e1 | 139 | child_process * |
6cdfb6e6 RS |
140 | new_child (void) |
141 | { | |
142 | child_process *cp; | |
c519b5e1 | 143 | DWORD id; |
177c0ea7 | 144 | |
9d4f32e8 | 145 | for (cp = child_procs + (child_proc_count-1); cp >= child_procs; cp--) |
6cdfb6e6 | 146 | if (!CHILD_ACTIVE (cp)) |
e1dbe924 | 147 | goto Initialize; |
c519b5e1 GV |
148 | if (child_proc_count == MAX_CHILDREN) |
149 | return NULL; | |
150 | cp = &child_procs[child_proc_count++]; | |
151 | ||
e1dbe924 | 152 | Initialize: |
ed3751c8 | 153 | memset (cp, 0, sizeof (*cp)); |
c519b5e1 GV |
154 | cp->fd = -1; |
155 | cp->pid = -1; | |
156 | cp->procinfo.hProcess = NULL; | |
157 | cp->status = STATUS_READ_ERROR; | |
158 | ||
159 | /* use manual reset event so that select() will function properly */ | |
160 | cp->char_avail = CreateEvent (NULL, TRUE, FALSE, NULL); | |
161 | if (cp->char_avail) | |
162 | { | |
163 | cp->char_consumed = CreateEvent (NULL, FALSE, FALSE, NULL); | |
164 | if (cp->char_consumed) | |
165 | { | |
0d887c7d EZ |
166 | /* The 0x00010000 flag is STACK_SIZE_PARAM_IS_A_RESERVATION. |
167 | It means that the 64K stack we are requesting in the 2nd | |
168 | argument is how much memory should be reserved for the | |
169 | stack. If we don't use this flag, the memory requested | |
170 | by the 2nd argument is the amount actually _committed_, | |
171 | but Windows reserves 8MB of memory for each thread's | |
172 | stack. (The 8MB figure comes from the -stack | |
173 | command-line argument we pass to the linker when building | |
174 | Emacs, but that's because we need a large stack for | |
175 | Emacs's main thread.) Since we request 2GB of reserved | |
176 | memory at startup (see w32heap.c), which is close to the | |
177 | maximum memory available for a 32-bit process on Windows, | |
178 | the 8MB reservation for each thread causes failures in | |
179 | starting subprocesses, because we create a thread running | |
180 | reader_thread for each subprocess. As 8MB of stack is | |
181 | way too much for reader_thread, forcing Windows to | |
182 | reserve less wins the day. */ | |
183 | cp->thrd = CreateThread (NULL, 64 * 1024, reader_thread, cp, | |
184 | 0x00010000, &id); | |
c519b5e1 GV |
185 | if (cp->thrd) |
186 | return cp; | |
187 | } | |
188 | } | |
189 | delete_child (cp); | |
190 | return NULL; | |
191 | } | |
192 | ||
177c0ea7 | 193 | void |
c519b5e1 GV |
194 | delete_child (child_process *cp) |
195 | { | |
196 | int i; | |
197 | ||
198 | /* Should not be deleting a child that is still needed. */ | |
199 | for (i = 0; i < MAXDESC; i++) | |
200 | if (fd_info[i].cp == cp) | |
1088b922 | 201 | emacs_abort (); |
c519b5e1 GV |
202 | |
203 | if (!CHILD_ACTIVE (cp)) | |
204 | return; | |
205 | ||
206 | /* reap thread if necessary */ | |
207 | if (cp->thrd) | |
208 | { | |
209 | DWORD rc; | |
210 | ||
211 | if (GetExitCodeThread (cp->thrd, &rc) && rc == STILL_ACTIVE) | |
212 | { | |
213 | /* let the thread exit cleanly if possible */ | |
214 | cp->status = STATUS_READ_ERROR; | |
215 | SetEvent (cp->char_consumed); | |
a017b515 | 216 | #if 0 |
c5e87d10 | 217 | /* We used to forcibly terminate the thread here, but it |
a017b515 JR |
218 | is normally unnecessary, and in abnormal cases, the worst that |
219 | will happen is we have an extra idle thread hanging around | |
220 | waiting for the zombie process. */ | |
c519b5e1 GV |
221 | if (WaitForSingleObject (cp->thrd, 1000) != WAIT_OBJECT_0) |
222 | { | |
223 | DebPrint (("delete_child.WaitForSingleObject (thread) failed " | |
224 | "with %lu for fd %ld\n", GetLastError (), cp->fd)); | |
225 | TerminateThread (cp->thrd, 0); | |
226 | } | |
a017b515 | 227 | #endif |
c519b5e1 GV |
228 | } |
229 | CloseHandle (cp->thrd); | |
230 | cp->thrd = NULL; | |
231 | } | |
232 | if (cp->char_avail) | |
233 | { | |
234 | CloseHandle (cp->char_avail); | |
235 | cp->char_avail = NULL; | |
236 | } | |
237 | if (cp->char_consumed) | |
238 | { | |
239 | CloseHandle (cp->char_consumed); | |
240 | cp->char_consumed = NULL; | |
241 | } | |
242 | ||
243 | /* update child_proc_count (highest numbered slot in use plus one) */ | |
244 | if (cp == child_procs + child_proc_count - 1) | |
245 | { | |
246 | for (i = child_proc_count-1; i >= 0; i--) | |
247 | if (CHILD_ACTIVE (&child_procs[i])) | |
248 | { | |
249 | child_proc_count = i + 1; | |
250 | break; | |
251 | } | |
252 | } | |
253 | if (i < 0) | |
254 | child_proc_count = 0; | |
6cdfb6e6 RS |
255 | } |
256 | ||
257 | /* Find a child by pid. */ | |
258 | static child_process * | |
259 | find_child_pid (DWORD pid) | |
260 | { | |
261 | child_process *cp; | |
c519b5e1 | 262 | |
9d4f32e8 | 263 | for (cp = child_procs + (child_proc_count-1); cp >= child_procs; cp--) |
6cdfb6e6 RS |
264 | if (CHILD_ACTIVE (cp) && pid == cp->pid) |
265 | return cp; | |
266 | return NULL; | |
267 | } | |
268 | ||
6cdfb6e6 | 269 | |
c519b5e1 GV |
270 | /* Thread proc for child process and socket reader threads. Each thread |
271 | is normally blocked until woken by select() to check for input by | |
04bf5b65 | 272 | reading one char. When the read completes, char_avail is signaled |
c519b5e1 | 273 | to wake up the select emulator and the thread blocks itself again. */ |
24f981c9 | 274 | static DWORD WINAPI |
6cdfb6e6 RS |
275 | reader_thread (void *arg) |
276 | { | |
277 | child_process *cp; | |
177c0ea7 | 278 | |
6cdfb6e6 RS |
279 | /* Our identity */ |
280 | cp = (child_process *)arg; | |
177c0ea7 | 281 | |
6cdfb6e6 | 282 | /* We have to wait for the go-ahead before we can start */ |
b2fc9f3d | 283 | if (cp == NULL |
f067b8ec JB |
284 | || WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0 |
285 | || cp->fd < 0) | |
c519b5e1 GV |
286 | return 1; |
287 | ||
6cdfb6e6 RS |
288 | for (;;) |
289 | { | |
c519b5e1 GV |
290 | int rc; |
291 | ||
f9125cde KS |
292 | if (fd_info[cp->fd].flags & FILE_LISTEN) |
293 | rc = _sys_wait_accept (cp->fd); | |
294 | else | |
295 | rc = _sys_read_ahead (cp->fd); | |
c519b5e1 GV |
296 | |
297 | /* The name char_avail is a misnomer - it really just means the | |
298 | read-ahead has completed, whether successfully or not. */ | |
6cdfb6e6 RS |
299 | if (!SetEvent (cp->char_avail)) |
300 | { | |
301 | DebPrint (("reader_thread.SetEvent failed with %lu for fd %ld\n", | |
302 | GetLastError (), cp->fd)); | |
c519b5e1 GV |
303 | return 1; |
304 | } | |
305 | ||
306 | if (rc == STATUS_READ_ERROR) | |
307 | return 1; | |
177c0ea7 | 308 | |
6cdfb6e6 | 309 | /* If the read died, the child has died so let the thread die */ |
c519b5e1 | 310 | if (rc == STATUS_READ_FAILED) |
6cdfb6e6 | 311 | break; |
177c0ea7 | 312 | |
6cdfb6e6 RS |
313 | /* Wait until our input is acknowledged before reading again */ |
314 | if (WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0) | |
315 | { | |
316 | DebPrint (("reader_thread.WaitForSingleObject failed with " | |
317 | "%lu for fd %ld\n", GetLastError (), cp->fd)); | |
318 | break; | |
319 | } | |
320 | } | |
321 | return 0; | |
322 | } | |
323 | ||
b2fc9f3d GV |
324 | /* To avoid Emacs changing directory, we just record here the directory |
325 | the new process should start in. This is set just before calling | |
326 | sys_spawnve, and is not generally valid at any other time. */ | |
327 | static char * process_dir; | |
328 | ||
177c0ea7 | 329 | static BOOL |
a55a5f3c | 330 | create_child (char *exe, char *cmdline, char *env, int is_gui_app, |
c519b5e1 | 331 | int * pPid, child_process *cp) |
6cdfb6e6 | 332 | { |
6cdfb6e6 RS |
333 | STARTUPINFO start; |
334 | SECURITY_ATTRIBUTES sec_attrs; | |
42c95ffb | 335 | #if 0 |
6cdfb6e6 | 336 | SECURITY_DESCRIPTOR sec_desc; |
42c95ffb | 337 | #endif |
82e7c0a9 | 338 | DWORD flags; |
b2fc9f3d | 339 | char dir[ MAXPATHLEN ]; |
177c0ea7 | 340 | |
1088b922 | 341 | if (cp == NULL) emacs_abort (); |
177c0ea7 | 342 | |
6cdfb6e6 RS |
343 | memset (&start, 0, sizeof (start)); |
344 | start.cb = sizeof (start); | |
177c0ea7 | 345 | |
58d4e829 | 346 | #ifdef HAVE_NTGUI |
a55a5f3c | 347 | if (NILP (Vw32_start_process_show_window) && !is_gui_app) |
0ecf7d36 RS |
348 | start.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW; |
349 | else | |
350 | start.dwFlags = STARTF_USESTDHANDLES; | |
58d4e829 GV |
351 | start.wShowWindow = SW_HIDE; |
352 | ||
353 | start.hStdInput = GetStdHandle (STD_INPUT_HANDLE); | |
354 | start.hStdOutput = GetStdHandle (STD_OUTPUT_HANDLE); | |
355 | start.hStdError = GetStdHandle (STD_ERROR_HANDLE); | |
356 | #endif /* HAVE_NTGUI */ | |
357 | ||
42c95ffb | 358 | #if 0 |
6cdfb6e6 RS |
359 | /* Explicitly specify no security */ |
360 | if (!InitializeSecurityDescriptor (&sec_desc, SECURITY_DESCRIPTOR_REVISION)) | |
c519b5e1 | 361 | goto EH_Fail; |
6cdfb6e6 | 362 | if (!SetSecurityDescriptorDacl (&sec_desc, TRUE, NULL, FALSE)) |
c519b5e1 | 363 | goto EH_Fail; |
42c95ffb | 364 | #endif |
6cdfb6e6 | 365 | sec_attrs.nLength = sizeof (sec_attrs); |
42c95ffb | 366 | sec_attrs.lpSecurityDescriptor = NULL /* &sec_desc */; |
6cdfb6e6 | 367 | sec_attrs.bInheritHandle = FALSE; |
177c0ea7 | 368 | |
b2fc9f3d GV |
369 | strcpy (dir, process_dir); |
370 | unixtodos_filename (dir); | |
82e7c0a9 AI |
371 | |
372 | flags = (!NILP (Vw32_start_process_share_console) | |
373 | ? CREATE_NEW_PROCESS_GROUP | |
374 | : CREATE_NEW_CONSOLE); | |
375 | if (NILP (Vw32_start_process_inherit_error_mode)) | |
376 | flags |= CREATE_DEFAULT_ERROR_MODE; | |
6cdfb6e6 | 377 | if (!CreateProcess (exe, cmdline, &sec_attrs, NULL, TRUE, |
82e7c0a9 | 378 | flags, env, dir, &start, &cp->procinfo)) |
c519b5e1 GV |
379 | goto EH_Fail; |
380 | ||
381 | cp->pid = (int) cp->procinfo.dwProcessId; | |
382 | ||
383 | /* Hack for Windows 95, which assigns large (ie negative) pids */ | |
384 | if (cp->pid < 0) | |
385 | cp->pid = -cp->pid; | |
386 | ||
387 | /* pid must fit in a Lisp_Int */ | |
acba5cae | 388 | cp->pid = cp->pid & INTMASK; |
c519b5e1 | 389 | |
c519b5e1 | 390 | *pPid = cp->pid; |
b2fc9f3d | 391 | |
6cdfb6e6 | 392 | return TRUE; |
b2fc9f3d | 393 | |
6cdfb6e6 | 394 | EH_Fail: |
ed3751c8 | 395 | DebPrint (("create_child.CreateProcess failed: %ld\n", GetLastError ());); |
6cdfb6e6 RS |
396 | return FALSE; |
397 | } | |
398 | ||
399 | /* create_child doesn't know what emacs' file handle will be for waiting | |
400 | on output from the child, so we need to make this additional call | |
401 | to register the handle with the process | |
402 | This way the select emulator knows how to match file handles with | |
403 | entries in child_procs. */ | |
177c0ea7 | 404 | void |
6cdfb6e6 RS |
405 | register_child (int pid, int fd) |
406 | { | |
407 | child_process *cp; | |
177c0ea7 | 408 | |
6cdfb6e6 RS |
409 | cp = find_child_pid (pid); |
410 | if (cp == NULL) | |
411 | { | |
412 | DebPrint (("register_child unable to find pid %lu\n", pid)); | |
413 | return; | |
414 | } | |
177c0ea7 | 415 | |
6cdfb6e6 RS |
416 | #ifdef FULL_DEBUG |
417 | DebPrint (("register_child registered fd %d with pid %lu\n", fd, pid)); | |
418 | #endif | |
177c0ea7 | 419 | |
6cdfb6e6 | 420 | cp->fd = fd; |
6cdfb6e6 | 421 | |
c519b5e1 GV |
422 | /* thread is initially blocked until select is called; set status so |
423 | that select will release thread */ | |
424 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
425 | ||
426 | /* attach child_process to fd_info */ | |
427 | if (fd_info[fd].cp != NULL) | |
6cdfb6e6 | 428 | { |
c519b5e1 | 429 | DebPrint (("register_child: fd_info[%d] apparently in use!\n", fd)); |
1088b922 | 430 | emacs_abort (); |
6cdfb6e6 | 431 | } |
c519b5e1 GV |
432 | |
433 | fd_info[fd].cp = cp; | |
6cdfb6e6 RS |
434 | } |
435 | ||
436 | /* When a process dies its pipe will break so the reader thread will | |
437 | signal failure to the select emulator. | |
438 | The select emulator then calls this routine to clean up. | |
439 | Since the thread signaled failure we can assume it is exiting. */ | |
177c0ea7 | 440 | static void |
c519b5e1 | 441 | reap_subprocess (child_process *cp) |
6cdfb6e6 | 442 | { |
c519b5e1 | 443 | if (cp->procinfo.hProcess) |
6cdfb6e6 | 444 | { |
c519b5e1 | 445 | /* Reap the process */ |
b2fc9f3d GV |
446 | #ifdef FULL_DEBUG |
447 | /* Process should have already died before we are called. */ | |
448 | if (WaitForSingleObject (cp->procinfo.hProcess, 0) != WAIT_OBJECT_0) | |
449 | DebPrint (("reap_subprocess: child fpr fd %d has not died yet!", cp->fd)); | |
450 | #endif | |
c519b5e1 GV |
451 | CloseHandle (cp->procinfo.hProcess); |
452 | cp->procinfo.hProcess = NULL; | |
453 | CloseHandle (cp->procinfo.hThread); | |
454 | cp->procinfo.hThread = NULL; | |
6cdfb6e6 | 455 | } |
c519b5e1 GV |
456 | |
457 | /* For asynchronous children, the child_proc resources will be freed | |
458 | when the last pipe read descriptor is closed; for synchronous | |
459 | children, we must explicitly free the resources now because | |
460 | register_child has not been called. */ | |
461 | if (cp->fd == -1) | |
462 | delete_child (cp); | |
6cdfb6e6 RS |
463 | } |
464 | ||
465 | /* Wait for any of our existing child processes to die | |
466 | When it does, close its handle | |
467 | Return the pid and fill in the status if non-NULL. */ | |
22759c72 | 468 | |
177c0ea7 | 469 | int |
c519b5e1 | 470 | sys_wait (int *status) |
6cdfb6e6 RS |
471 | { |
472 | DWORD active, retval; | |
473 | int nh; | |
c519b5e1 | 474 | int pid; |
6cdfb6e6 RS |
475 | child_process *cp, *cps[MAX_CHILDREN]; |
476 | HANDLE wait_hnd[MAX_CHILDREN]; | |
177c0ea7 | 477 | |
6cdfb6e6 RS |
478 | nh = 0; |
479 | if (dead_child != NULL) | |
480 | { | |
481 | /* We want to wait for a specific child */ | |
c519b5e1 | 482 | wait_hnd[nh] = dead_child->procinfo.hProcess; |
6cdfb6e6 | 483 | cps[nh] = dead_child; |
1088b922 | 484 | if (!wait_hnd[nh]) emacs_abort (); |
6cdfb6e6 | 485 | nh++; |
b2fc9f3d GV |
486 | active = 0; |
487 | goto get_result; | |
6cdfb6e6 RS |
488 | } |
489 | else | |
490 | { | |
9d4f32e8 | 491 | for (cp = child_procs + (child_proc_count-1); cp >= child_procs; cp--) |
c519b5e1 | 492 | /* some child_procs might be sockets; ignore them */ |
3ac04ed0 CY |
493 | if (CHILD_ACTIVE (cp) && cp->procinfo.hProcess |
494 | && (cp->fd < 0 || (fd_info[cp->fd].flags & FILE_AT_EOF) != 0)) | |
6cdfb6e6 | 495 | { |
c519b5e1 | 496 | wait_hnd[nh] = cp->procinfo.hProcess; |
6cdfb6e6 RS |
497 | cps[nh] = cp; |
498 | nh++; | |
499 | } | |
500 | } | |
177c0ea7 | 501 | |
6cdfb6e6 RS |
502 | if (nh == 0) |
503 | { | |
504 | /* Nothing to wait on, so fail */ | |
505 | errno = ECHILD; | |
506 | return -1; | |
507 | } | |
b2fc9f3d GV |
508 | |
509 | do | |
510 | { | |
511 | /* Check for quit about once a second. */ | |
512 | QUIT; | |
513 | active = WaitForMultipleObjects (nh, wait_hnd, FALSE, 1000); | |
514 | } while (active == WAIT_TIMEOUT); | |
515 | ||
6cdfb6e6 RS |
516 | if (active == WAIT_FAILED) |
517 | { | |
518 | errno = EBADF; | |
519 | return -1; | |
520 | } | |
b2fc9f3d GV |
521 | else if (active >= WAIT_OBJECT_0 |
522 | && active < WAIT_OBJECT_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
523 | { |
524 | active -= WAIT_OBJECT_0; | |
525 | } | |
b2fc9f3d GV |
526 | else if (active >= WAIT_ABANDONED_0 |
527 | && active < WAIT_ABANDONED_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
528 | { |
529 | active -= WAIT_ABANDONED_0; | |
530 | } | |
b2fc9f3d | 531 | else |
1088b922 | 532 | emacs_abort (); |
b2fc9f3d GV |
533 | |
534 | get_result: | |
6cdfb6e6 RS |
535 | if (!GetExitCodeProcess (wait_hnd[active], &retval)) |
536 | { | |
537 | DebPrint (("Wait.GetExitCodeProcess failed with %lu\n", | |
538 | GetLastError ())); | |
539 | retval = 1; | |
540 | } | |
541 | if (retval == STILL_ACTIVE) | |
542 | { | |
543 | /* Should never happen */ | |
544 | DebPrint (("Wait.WaitForMultipleObjects returned an active process\n")); | |
545 | errno = EINVAL; | |
546 | return -1; | |
547 | } | |
bc69349b RS |
548 | |
549 | /* Massage the exit code from the process to match the format expected | |
8e6208c5 | 550 | by the WIFSTOPPED et al macros in syswait.h. Only WIFSIGNALED and |
bc69349b RS |
551 | WIFEXITED are supported; WIFSTOPPED doesn't make sense under NT. */ |
552 | ||
553 | if (retval == STATUS_CONTROL_C_EXIT) | |
554 | retval = SIGINT; | |
555 | else | |
556 | retval <<= 8; | |
177c0ea7 | 557 | |
6cdfb6e6 | 558 | cp = cps[active]; |
c519b5e1 GV |
559 | pid = cp->pid; |
560 | #ifdef FULL_DEBUG | |
561 | DebPrint (("Wait signaled with process pid %d\n", cp->pid)); | |
562 | #endif | |
22759c72 | 563 | |
6cdfb6e6 RS |
564 | if (status) |
565 | { | |
22759c72 KH |
566 | *status = retval; |
567 | } | |
568 | else if (synch_process_alive) | |
569 | { | |
570 | synch_process_alive = 0; | |
22759c72 | 571 | |
3d7eead0 GV |
572 | /* Report the status of the synchronous process. */ |
573 | if (WIFEXITED (retval)) | |
13294f95 | 574 | synch_process_retcode = WEXITSTATUS (retval); |
3d7eead0 GV |
575 | else if (WIFSIGNALED (retval)) |
576 | { | |
577 | int code = WTERMSIG (retval); | |
68c45bf0 PE |
578 | char *signame; |
579 | ||
ca9c0567 | 580 | synchronize_system_messages_locale (); |
68c45bf0 PE |
581 | signame = strsignal (code); |
582 | ||
3d7eead0 GV |
583 | if (signame == 0) |
584 | signame = "unknown"; | |
585 | ||
586 | synch_process_death = signame; | |
587 | } | |
c519b5e1 GV |
588 | |
589 | reap_subprocess (cp); | |
6cdfb6e6 | 590 | } |
b2fc9f3d GV |
591 | |
592 | reap_subprocess (cp); | |
177c0ea7 | 593 | |
c519b5e1 | 594 | return pid; |
6cdfb6e6 RS |
595 | } |
596 | ||
75be5258 EZ |
597 | /* Old versions of w32api headers don't have separate 32-bit and |
598 | 64-bit defines, but the one they have matches the 32-bit variety. */ | |
599 | #ifndef IMAGE_NT_OPTIONAL_HDR32_MAGIC | |
600 | # define IMAGE_NT_OPTIONAL_HDR32_MAGIC IMAGE_NT_OPTIONAL_HDR_MAGIC | |
601 | # define IMAGE_OPTIONAL_HEADER32 IMAGE_OPTIONAL_HEADER | |
602 | #endif | |
603 | ||
24f981c9 | 604 | static void |
b56ceb92 JB |
605 | w32_executable_type (char * filename, |
606 | int * is_dos_app, | |
607 | int * is_cygnus_app, | |
608 | int * is_gui_app) | |
817abdf6 | 609 | { |
b2fc9f3d GV |
610 | file_data executable; |
611 | char * p; | |
177c0ea7 | 612 | |
b2fc9f3d GV |
613 | /* Default values in case we can't tell for sure. */ |
614 | *is_dos_app = FALSE; | |
615 | *is_cygnus_app = FALSE; | |
a55a5f3c | 616 | *is_gui_app = FALSE; |
b2fc9f3d GV |
617 | |
618 | if (!open_input_file (&executable, filename)) | |
619 | return; | |
817abdf6 | 620 | |
b2fc9f3d | 621 | p = strrchr (filename, '.'); |
177c0ea7 | 622 | |
b2fc9f3d | 623 | /* We can only identify DOS .com programs from the extension. */ |
05131107 | 624 | if (p && xstrcasecmp (p, ".com") == 0) |
b2fc9f3d | 625 | *is_dos_app = TRUE; |
05131107 JR |
626 | else if (p && (xstrcasecmp (p, ".bat") == 0 |
627 | || xstrcasecmp (p, ".cmd") == 0)) | |
b2fc9f3d GV |
628 | { |
629 | /* A DOS shell script - it appears that CreateProcess is happy to | |
630 | accept this (somewhat surprisingly); presumably it looks at | |
631 | COMSPEC to determine what executable to actually invoke. | |
632 | Therefore, we have to do the same here as well. */ | |
633 | /* Actually, I think it uses the program association for that | |
634 | extension, which is defined in the registry. */ | |
635 | p = egetenv ("COMSPEC"); | |
636 | if (p) | |
a55a5f3c | 637 | w32_executable_type (p, is_dos_app, is_cygnus_app, is_gui_app); |
b2fc9f3d GV |
638 | } |
639 | else | |
817abdf6 | 640 | { |
b2fc9f3d GV |
641 | /* Look for DOS .exe signature - if found, we must also check that |
642 | it isn't really a 16- or 32-bit Windows exe, since both formats | |
643 | start with a DOS program stub. Note that 16-bit Windows | |
644 | executables use the OS/2 1.x format. */ | |
817abdf6 | 645 | |
b2fc9f3d GV |
646 | IMAGE_DOS_HEADER * dos_header; |
647 | IMAGE_NT_HEADERS * nt_header; | |
648 | ||
649 | dos_header = (PIMAGE_DOS_HEADER) executable.file_base; | |
650 | if (dos_header->e_magic != IMAGE_DOS_SIGNATURE) | |
651 | goto unwind; | |
652 | ||
653 | nt_header = (PIMAGE_NT_HEADERS) ((char *) dos_header + dos_header->e_lfanew); | |
654 | ||
177c0ea7 | 655 | if ((char *) nt_header > (char *) dos_header + executable.size) |
817abdf6 | 656 | { |
b2fc9f3d GV |
657 | /* Some dos headers (pkunzip) have bogus e_lfanew fields. */ |
658 | *is_dos_app = TRUE; | |
177c0ea7 | 659 | } |
b2fc9f3d GV |
660 | else if (nt_header->Signature != IMAGE_NT_SIGNATURE |
661 | && LOWORD (nt_header->Signature) != IMAGE_OS2_SIGNATURE) | |
662 | { | |
663 | *is_dos_app = TRUE; | |
664 | } | |
665 | else if (nt_header->Signature == IMAGE_NT_SIGNATURE) | |
666 | { | |
2b6e2f4d JR |
667 | IMAGE_DATA_DIRECTORY *data_dir = NULL; |
668 | if (nt_header->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC) | |
669 | { | |
670 | /* Ensure we are using the 32 bit structure. */ | |
671 | IMAGE_OPTIONAL_HEADER32 *opt | |
672 | = (IMAGE_OPTIONAL_HEADER32*) &(nt_header->OptionalHeader); | |
673 | data_dir = opt->DataDirectory; | |
674 | *is_gui_app = (opt->Subsystem == IMAGE_SUBSYSTEM_WINDOWS_GUI); | |
675 | } | |
676 | /* MingW 3.12 has the required 64 bit structs, but in case older | |
677 | versions don't, only check 64 bit exes if we know how. */ | |
678 | #ifdef IMAGE_NT_OPTIONAL_HDR64_MAGIC | |
679 | else if (nt_header->OptionalHeader.Magic | |
680 | == IMAGE_NT_OPTIONAL_HDR64_MAGIC) | |
681 | { | |
682 | IMAGE_OPTIONAL_HEADER64 *opt | |
683 | = (IMAGE_OPTIONAL_HEADER64*) &(nt_header->OptionalHeader); | |
684 | data_dir = opt->DataDirectory; | |
685 | *is_gui_app = (opt->Subsystem == IMAGE_SUBSYSTEM_WINDOWS_GUI); | |
686 | } | |
687 | #endif | |
688 | if (data_dir) | |
689 | { | |
690 | /* Look for cygwin.dll in DLL import list. */ | |
691 | IMAGE_DATA_DIRECTORY import_dir = | |
692 | data_dir[IMAGE_DIRECTORY_ENTRY_IMPORT]; | |
693 | IMAGE_IMPORT_DESCRIPTOR * imports; | |
694 | IMAGE_SECTION_HEADER * section; | |
695 | ||
696 | section = rva_to_section (import_dir.VirtualAddress, nt_header); | |
697 | imports = RVA_TO_PTR (import_dir.VirtualAddress, section, | |
698 | executable); | |
699 | ||
700 | for ( ; imports->Name; imports++) | |
701 | { | |
702 | char * dllname = RVA_TO_PTR (imports->Name, section, | |
703 | executable); | |
35f36d65 | 704 | |
2b6e2f4d JR |
705 | /* The exact name of the cygwin dll has changed with |
706 | various releases, but hopefully this will be reasonably | |
707 | future proof. */ | |
708 | if (strncmp (dllname, "cygwin", 6) == 0) | |
709 | { | |
710 | *is_cygnus_app = TRUE; | |
711 | break; | |
712 | } | |
713 | } | |
714 | } | |
b2fc9f3d | 715 | } |
817abdf6 | 716 | } |
177c0ea7 | 717 | |
b2fc9f3d GV |
718 | unwind: |
719 | close_file_data (&executable); | |
817abdf6 KH |
720 | } |
721 | ||
24f981c9 | 722 | static int |
42c95ffb | 723 | compare_env (const void *strp1, const void *strp2) |
d9709fde | 724 | { |
42c95ffb | 725 | const char *str1 = *(const char **)strp1, *str2 = *(const char **)strp2; |
d9709fde GV |
726 | |
727 | while (*str1 && *str2 && *str1 != '=' && *str2 != '=') | |
728 | { | |
11c22fff AI |
729 | /* Sort order in command.com/cmd.exe is based on uppercasing |
730 | names, so do the same here. */ | |
731 | if (toupper (*str1) > toupper (*str2)) | |
d9709fde | 732 | return 1; |
11c22fff | 733 | else if (toupper (*str1) < toupper (*str2)) |
d9709fde GV |
734 | return -1; |
735 | str1++, str2++; | |
736 | } | |
737 | ||
738 | if (*str1 == '=' && *str2 == '=') | |
739 | return 0; | |
740 | else if (*str1 == '=') | |
741 | return -1; | |
742 | else | |
743 | return 1; | |
744 | } | |
745 | ||
24f981c9 | 746 | static void |
d9709fde GV |
747 | merge_and_sort_env (char **envp1, char **envp2, char **new_envp) |
748 | { | |
749 | char **optr, **nptr; | |
750 | int num; | |
751 | ||
752 | nptr = new_envp; | |
753 | optr = envp1; | |
754 | while (*optr) | |
755 | *nptr++ = *optr++; | |
756 | num = optr - envp1; | |
757 | ||
758 | optr = envp2; | |
759 | while (*optr) | |
760 | *nptr++ = *optr++; | |
761 | num += optr - envp2; | |
762 | ||
763 | qsort (new_envp, num, sizeof (char *), compare_env); | |
764 | ||
765 | *nptr = NULL; | |
766 | } | |
6cdfb6e6 RS |
767 | |
768 | /* When a new child process is created we need to register it in our list, | |
769 | so intercept spawn requests. */ | |
177c0ea7 | 770 | int |
c519b5e1 | 771 | sys_spawnve (int mode, char *cmdname, char **argv, char **envp) |
6cdfb6e6 | 772 | { |
0a4de642 | 773 | Lisp_Object program, full; |
6cdfb6e6 | 774 | char *cmdline, *env, *parg, **targ; |
d9709fde | 775 | int arglen, numenv; |
c519b5e1 GV |
776 | int pid; |
777 | child_process *cp; | |
a55a5f3c | 778 | int is_dos_app, is_cygnus_app, is_gui_app; |
b2fc9f3d GV |
779 | int do_quoting = 0; |
780 | char escape_char; | |
d9709fde GV |
781 | /* We pass our process ID to our children by setting up an environment |
782 | variable in their environment. */ | |
783 | char ppid_env_var_buffer[64]; | |
784 | char *extra_env[] = {ppid_env_var_buffer, NULL}; | |
0a7a6051 JR |
785 | /* These are the characters that cause an argument to need quoting. |
786 | Arguments with whitespace characters need quoting to prevent the | |
787 | argument being split into two or more. Arguments with wildcards | |
788 | are also quoted, for consistency with posix platforms, where wildcards | |
789 | are not expanded if we run the program directly without a shell. | |
790 | Some extra whitespace characters need quoting in Cygwin programs, | |
791 | so this list is conditionally modified below. */ | |
792 | char *sepchars = " \t*?"; | |
d9709fde | 793 | |
c519b5e1 GV |
794 | /* We don't care about the other modes */ |
795 | if (mode != _P_NOWAIT) | |
796 | { | |
797 | errno = EINVAL; | |
798 | return -1; | |
799 | } | |
0a4de642 RS |
800 | |
801 | /* Handle executable names without an executable suffix. */ | |
1130ecfc | 802 | program = build_string (cmdname); |
0a4de642 RS |
803 | if (NILP (Ffile_executable_p (program))) |
804 | { | |
805 | struct gcpro gcpro1; | |
177c0ea7 | 806 | |
0a4de642 RS |
807 | full = Qnil; |
808 | GCPRO1 (program); | |
44c7a526 | 809 | openp (Vexec_path, program, Vexec_suffixes, &full, make_number (X_OK)); |
0a4de642 RS |
810 | UNGCPRO; |
811 | if (NILP (full)) | |
812 | { | |
813 | errno = EINVAL; | |
814 | return -1; | |
815 | } | |
b2fc9f3d | 816 | program = full; |
0a4de642 RS |
817 | } |
818 | ||
b2fc9f3d | 819 | /* make sure argv[0] and cmdname are both in DOS format */ |
d5db4077 | 820 | cmdname = SDATA (program); |
c519b5e1 GV |
821 | unixtodos_filename (cmdname); |
822 | argv[0] = cmdname; | |
817abdf6 | 823 | |
b46a6a83 | 824 | /* Determine whether program is a 16-bit DOS executable, or a 32-bit Windows |
b2fc9f3d GV |
825 | executable that is implicitly linked to the Cygnus dll (implying it |
826 | was compiled with the Cygnus GNU toolchain and hence relies on | |
827 | cygwin.dll to parse the command line - we use this to decide how to | |
a55a5f3c AI |
828 | escape quote chars in command line args that must be quoted). |
829 | ||
830 | Also determine whether it is a GUI app, so that we don't hide its | |
831 | initial window unless specifically requested. */ | |
832 | w32_executable_type (cmdname, &is_dos_app, &is_cygnus_app, &is_gui_app); | |
b2fc9f3d GV |
833 | |
834 | /* On Windows 95, if cmdname is a DOS app, we invoke a helper | |
835 | application to start it by specifying the helper app as cmdname, | |
836 | while leaving the real app name as argv[0]. */ | |
837 | if (is_dos_app) | |
817abdf6 | 838 | { |
b2fc9f3d GV |
839 | cmdname = alloca (MAXPATHLEN); |
840 | if (egetenv ("CMDPROXY")) | |
841 | strcpy (cmdname, egetenv ("CMDPROXY")); | |
842 | else | |
843 | { | |
d5db4077 | 844 | strcpy (cmdname, SDATA (Vinvocation_directory)); |
b2fc9f3d GV |
845 | strcat (cmdname, "cmdproxy.exe"); |
846 | } | |
847 | unixtodos_filename (cmdname); | |
817abdf6 | 848 | } |
177c0ea7 | 849 | |
6cdfb6e6 RS |
850 | /* we have to do some conjuring here to put argv and envp into the |
851 | form CreateProcess wants... argv needs to be a space separated/null | |
852 | terminated list of parameters, and envp is a null | |
853 | separated/double-null terminated list of parameters. | |
c519b5e1 | 854 | |
b2fc9f3d GV |
855 | Additionally, zero-length args and args containing whitespace or |
856 | quote chars need to be wrapped in double quotes - for this to work, | |
857 | embedded quotes need to be escaped as well. The aim is to ensure | |
858 | the child process reconstructs the argv array we start with | |
859 | exactly, so we treat quotes at the beginning and end of arguments | |
860 | as embedded quotes. | |
861 | ||
ef79fbba | 862 | The w32 GNU-based library from Cygnus doubles quotes to escape |
b2fc9f3d | 863 | them, while MSVC uses backslash for escaping. (Actually the MSVC |
e1dbe924 | 864 | startup code does attempt to recognize doubled quotes and accept |
b2fc9f3d GV |
865 | them, but gets it wrong and ends up requiring three quotes to get a |
866 | single embedded quote!) So by default we decide whether to use | |
867 | quote or backslash as the escape character based on whether the | |
868 | binary is apparently a Cygnus compiled app. | |
869 | ||
870 | Note that using backslash to escape embedded quotes requires | |
871 | additional special handling if an embedded quote is already | |
97610156 | 872 | preceded by backslash, or if an arg requiring quoting ends with |
b2fc9f3d GV |
873 | backslash. In such cases, the run of escape characters needs to be |
874 | doubled. For consistency, we apply this special handling as long | |
875 | as the escape character is not quote. | |
876 | ||
877 | Since we have no idea how large argv and envp are likely to be we | |
878 | figure out list lengths on the fly and allocate them. */ | |
879 | ||
880 | if (!NILP (Vw32_quote_process_args)) | |
881 | { | |
882 | do_quoting = 1; | |
883 | /* Override escape char by binding w32-quote-process-args to | |
884 | desired character, or use t for auto-selection. */ | |
885 | if (INTEGERP (Vw32_quote_process_args)) | |
886 | escape_char = XINT (Vw32_quote_process_args); | |
887 | else | |
888 | escape_char = is_cygnus_app ? '"' : '\\'; | |
889 | } | |
177c0ea7 | 890 | |
9d4f32e8 | 891 | /* Cygwin apps needs quoting a bit more often. */ |
dbb70029 GM |
892 | if (escape_char == '"') |
893 | sepchars = "\r\n\t\f '"; | |
894 | ||
6cdfb6e6 RS |
895 | /* do argv... */ |
896 | arglen = 0; | |
897 | targ = argv; | |
898 | while (*targ) | |
899 | { | |
c519b5e1 | 900 | char * p = *targ; |
b2fc9f3d GV |
901 | int need_quotes = 0; |
902 | int escape_char_run = 0; | |
c519b5e1 GV |
903 | |
904 | if (*p == 0) | |
b2fc9f3d GV |
905 | need_quotes = 1; |
906 | for ( ; *p; p++) | |
907 | { | |
dbb70029 GM |
908 | if (escape_char == '"' && *p == '\\') |
909 | /* If it's a Cygwin app, \ needs to be escaped. */ | |
910 | arglen++; | |
911 | else if (*p == '"') | |
b2fc9f3d GV |
912 | { |
913 | /* allow for embedded quotes to be escaped */ | |
914 | arglen++; | |
915 | need_quotes = 1; | |
916 | /* handle the case where the embedded quote is already escaped */ | |
917 | if (escape_char_run > 0) | |
918 | { | |
919 | /* To preserve the arg exactly, we need to double the | |
920 | preceding escape characters (plus adding one to | |
921 | escape the quote character itself). */ | |
922 | arglen += escape_char_run; | |
923 | } | |
924 | } | |
dbb70029 | 925 | else if (strchr (sepchars, *p) != NULL) |
b2fc9f3d GV |
926 | { |
927 | need_quotes = 1; | |
928 | } | |
929 | ||
930 | if (*p == escape_char && escape_char != '"') | |
931 | escape_char_run++; | |
932 | else | |
933 | escape_char_run = 0; | |
934 | } | |
935 | if (need_quotes) | |
936 | { | |
937 | arglen += 2; | |
938 | /* handle the case where the arg ends with an escape char - we | |
939 | must not let the enclosing quote be escaped. */ | |
940 | if (escape_char_run > 0) | |
941 | arglen += escape_char_run; | |
942 | } | |
6cdfb6e6 RS |
943 | arglen += strlen (*targ++) + 1; |
944 | } | |
c519b5e1 | 945 | cmdline = alloca (arglen); |
6cdfb6e6 RS |
946 | targ = argv; |
947 | parg = cmdline; | |
948 | while (*targ) | |
949 | { | |
c519b5e1 | 950 | char * p = *targ; |
b2fc9f3d | 951 | int need_quotes = 0; |
c519b5e1 GV |
952 | |
953 | if (*p == 0) | |
b2fc9f3d | 954 | need_quotes = 1; |
93fdf2f8 | 955 | |
b2fc9f3d | 956 | if (do_quoting) |
93fdf2f8 | 957 | { |
93fdf2f8 | 958 | for ( ; *p; p++) |
dbb70029 | 959 | if ((strchr (sepchars, *p) != NULL) || *p == '"') |
b2fc9f3d | 960 | need_quotes = 1; |
93fdf2f8 | 961 | } |
b2fc9f3d | 962 | if (need_quotes) |
c519b5e1 | 963 | { |
b2fc9f3d | 964 | int escape_char_run = 0; |
c519b5e1 GV |
965 | char * first; |
966 | char * last; | |
967 | ||
968 | p = *targ; | |
969 | first = p; | |
970 | last = p + strlen (p) - 1; | |
971 | *parg++ = '"'; | |
b2fc9f3d GV |
972 | #if 0 |
973 | /* This version does not escape quotes if they occur at the | |
974 | beginning or end of the arg - this could lead to incorrect | |
fffa137c | 975 | behavior when the arg itself represents a command line |
b2fc9f3d GV |
976 | containing quoted args. I believe this was originally done |
977 | as a hack to make some things work, before | |
978 | `w32-quote-process-args' was added. */ | |
c519b5e1 GV |
979 | while (*p) |
980 | { | |
981 | if (*p == '"' && p > first && p < last) | |
b2fc9f3d | 982 | *parg++ = escape_char; /* escape embedded quotes */ |
c519b5e1 GV |
983 | *parg++ = *p++; |
984 | } | |
b2fc9f3d GV |
985 | #else |
986 | for ( ; *p; p++) | |
987 | { | |
988 | if (*p == '"') | |
989 | { | |
990 | /* double preceding escape chars if any */ | |
991 | while (escape_char_run > 0) | |
992 | { | |
993 | *parg++ = escape_char; | |
994 | escape_char_run--; | |
995 | } | |
996 | /* escape all quote chars, even at beginning or end */ | |
997 | *parg++ = escape_char; | |
998 | } | |
dbb70029 GM |
999 | else if (escape_char == '"' && *p == '\\') |
1000 | *parg++ = '\\'; | |
b2fc9f3d GV |
1001 | *parg++ = *p; |
1002 | ||
1003 | if (*p == escape_char && escape_char != '"') | |
1004 | escape_char_run++; | |
1005 | else | |
1006 | escape_char_run = 0; | |
1007 | } | |
1008 | /* double escape chars before enclosing quote */ | |
1009 | while (escape_char_run > 0) | |
1010 | { | |
1011 | *parg++ = escape_char; | |
1012 | escape_char_run--; | |
1013 | } | |
1014 | #endif | |
c519b5e1 GV |
1015 | *parg++ = '"'; |
1016 | } | |
1017 | else | |
1018 | { | |
1019 | strcpy (parg, *targ); | |
1020 | parg += strlen (*targ); | |
1021 | } | |
6cdfb6e6 | 1022 | *parg++ = ' '; |
c519b5e1 | 1023 | targ++; |
6cdfb6e6 RS |
1024 | } |
1025 | *--parg = '\0'; | |
177c0ea7 | 1026 | |
6cdfb6e6 RS |
1027 | /* and envp... */ |
1028 | arglen = 1; | |
1029 | targ = envp; | |
d9709fde | 1030 | numenv = 1; /* for end null */ |
6cdfb6e6 RS |
1031 | while (*targ) |
1032 | { | |
1033 | arglen += strlen (*targ++) + 1; | |
d9709fde | 1034 | numenv++; |
6cdfb6e6 | 1035 | } |
d9709fde | 1036 | /* extra env vars... */ |
177c0ea7 | 1037 | sprintf (ppid_env_var_buffer, "EM_PARENT_PROCESS_ID=%d", |
6cdfb6e6 RS |
1038 | GetCurrentProcessId ()); |
1039 | arglen += strlen (ppid_env_var_buffer) + 1; | |
d9709fde | 1040 | numenv++; |
6cdfb6e6 | 1041 | |
d9709fde GV |
1042 | /* merge env passed in and extra env into one, and sort it. */ |
1043 | targ = (char **) alloca (numenv * sizeof (char *)); | |
1044 | merge_and_sort_env (envp, extra_env, targ); | |
1045 | ||
1046 | /* concatenate env entries. */ | |
c519b5e1 | 1047 | env = alloca (arglen); |
6cdfb6e6 RS |
1048 | parg = env; |
1049 | while (*targ) | |
1050 | { | |
1051 | strcpy (parg, *targ); | |
1052 | parg += strlen (*targ++); | |
1053 | *parg++ = '\0'; | |
1054 | } | |
6cdfb6e6 RS |
1055 | *parg++ = '\0'; |
1056 | *parg = '\0'; | |
c519b5e1 GV |
1057 | |
1058 | cp = new_child (); | |
1059 | if (cp == NULL) | |
1060 | { | |
1061 | errno = EAGAIN; | |
1062 | return -1; | |
1063 | } | |
177c0ea7 | 1064 | |
6cdfb6e6 | 1065 | /* Now create the process. */ |
a55a5f3c | 1066 | if (!create_child (cmdname, cmdline, env, is_gui_app, &pid, cp)) |
6cdfb6e6 | 1067 | { |
c519b5e1 | 1068 | delete_child (cp); |
6cdfb6e6 | 1069 | errno = ENOEXEC; |
c519b5e1 | 1070 | return -1; |
6cdfb6e6 | 1071 | } |
177c0ea7 | 1072 | |
c519b5e1 | 1073 | return pid; |
6cdfb6e6 RS |
1074 | } |
1075 | ||
1076 | /* Emulate the select call | |
1077 | Wait for available input on any of the given rfds, or timeout if | |
1078 | a timeout is given and no input is detected | |
b2fc9f3d GV |
1079 | wfds and efds are not supported and must be NULL. |
1080 | ||
1081 | For simplicity, we detect the death of child processes here and | |
1082 | synchronously call the SIGCHLD handler. Since it is possible for | |
1083 | children to be created without a corresponding pipe handle from which | |
1084 | to read output, we wait separately on the process handles as well as | |
1085 | the char_avail events for each process pipe. We only call | |
86143765 RS |
1086 | wait/reap_process when the process actually terminates. |
1087 | ||
1088 | To reduce the number of places in which Emacs can be hung such that | |
1089 | C-g is not able to interrupt it, we always wait on interrupt_handle | |
04bf5b65 | 1090 | (which is signaled by the input thread when C-g is detected). If we |
86143765 RS |
1091 | detect that we were woken up by C-g, we return -1 with errno set to |
1092 | EINTR as on Unix. */ | |
6cdfb6e6 | 1093 | |
7684e57b | 1094 | /* From w32console.c */ |
6cdfb6e6 | 1095 | extern HANDLE keyboard_handle; |
86143765 RS |
1096 | |
1097 | /* From w32xfns.c */ | |
1098 | extern HANDLE interrupt_handle; | |
1099 | ||
6cdfb6e6 RS |
1100 | /* From process.c */ |
1101 | extern int proc_buffered_char[]; | |
1102 | ||
177c0ea7 | 1103 | int |
22759c72 | 1104 | sys_select (int nfds, SELECT_TYPE *rfds, SELECT_TYPE *wfds, SELECT_TYPE *efds, |
c9240d7a | 1105 | EMACS_TIME *timeout, void *ignored) |
6cdfb6e6 RS |
1106 | { |
1107 | SELECT_TYPE orfds; | |
b2fc9f3d GV |
1108 | DWORD timeout_ms, start_time; |
1109 | int i, nh, nc, nr; | |
6cdfb6e6 | 1110 | DWORD active; |
b2fc9f3d GV |
1111 | child_process *cp, *cps[MAX_CHILDREN]; |
1112 | HANDLE wait_hnd[MAXDESC + MAX_CHILDREN]; | |
c519b5e1 | 1113 | int fdindex[MAXDESC]; /* mapping from wait handles back to descriptors */ |
177c0ea7 | 1114 | |
388cdec0 EZ |
1115 | timeout_ms = |
1116 | timeout ? (timeout->tv_sec * 1000 + timeout->tv_nsec / 1000000) : INFINITE; | |
b2fc9f3d | 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 | { | |
04bf5b65 | 1188 | /* char_avail has been signaled, so status (which may |
c519b5e1 GV |
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 | { | |
04bf5b65 | 1199 | /* char_avail has not been signaled, so status should |
c519b5e1 | 1200 | indicate that read is in progress; small possibility |
04bf5b65 | 1201 | that read has completed but event wasn't yet signaled |
c519b5e1 GV |
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; | |
1088b922 | 1214 | if (!wait_hnd[nh]) emacs_abort (); |
c519b5e1 | 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; | |
9d4f32e8 | 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 | 1266 | |
04bf5b65 | 1267 | /* Wait for input or child death to be signaled. If user input is |
8b031dcc AI |
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 | 1300 | else |
1088b922 | 1301 | emacs_abort (); |
6cdfb6e6 | 1302 | |
c519b5e1 | 1303 | /* Loop over all handles after active (now officially documented as |
04bf5b65 | 1304 | being the first signaled handle in the array). We do this to |
c519b5e1 GV |
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, | |
417a7a0e | 1411 | (os_subtype == OS_9X) |
b2fc9f3d GV |
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 | |
417a7a0e | 1542 | if (os_subtype == OS_9X) |
b2fc9f3d GV |
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 | 1560 | #if 0 |
b46a6a83 | 1561 | /* On Windows 95, posting WM_QUIT causes the 16-bit subsystem |
ef79fbba GV |
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 | ||
c519b5e1 GV |
1601 | /* The following two routines are used to manipulate stdin, stdout, and |
1602 | stderr of our child processes. | |
1603 | ||
1604 | Assuming that in, out, and err are *not* inheritable, we make them | |
1605 | stdin, stdout, and stderr of the child as follows: | |
1606 | ||
1607 | - Save the parent's current standard handles. | |
1608 | - Set the std handles to inheritable duplicates of the ones being passed in. | |
1609 | (Note that _get_osfhandle() is an io.h procedure that retrieves the | |
1610 | NT file handle for a crt file descriptor.) | |
1611 | - Spawn the child, which inherits in, out, and err as stdin, | |
1612 | stdout, and stderr. (see Spawnve) | |
1613 | - Close the std handles passed to the child. | |
1614 | - Reset the parent's standard handles to the saved handles. | |
1615 | (see reset_standard_handles) | |
1616 | We assume that the caller closes in, out, and err after calling us. */ | |
1617 | ||
1618 | void | |
1619 | prepare_standard_handles (int in, int out, int err, HANDLE handles[3]) | |
6cdfb6e6 | 1620 | { |
c519b5e1 GV |
1621 | HANDLE parent; |
1622 | HANDLE newstdin, newstdout, newstderr; | |
1623 | ||
1624 | parent = GetCurrentProcess (); | |
1625 | ||
1626 | handles[0] = GetStdHandle (STD_INPUT_HANDLE); | |
1627 | handles[1] = GetStdHandle (STD_OUTPUT_HANDLE); | |
1628 | handles[2] = GetStdHandle (STD_ERROR_HANDLE); | |
1629 | ||
1630 | /* make inheritable copies of the new handles */ | |
177c0ea7 | 1631 | if (!DuplicateHandle (parent, |
c519b5e1 GV |
1632 | (HANDLE) _get_osfhandle (in), |
1633 | parent, | |
177c0ea7 JB |
1634 | &newstdin, |
1635 | 0, | |
1636 | TRUE, | |
c519b5e1 GV |
1637 | DUPLICATE_SAME_ACCESS)) |
1638 | report_file_error ("Duplicating input handle for child", Qnil); | |
177c0ea7 | 1639 | |
c519b5e1 GV |
1640 | if (!DuplicateHandle (parent, |
1641 | (HANDLE) _get_osfhandle (out), | |
1642 | parent, | |
1643 | &newstdout, | |
1644 | 0, | |
1645 | TRUE, | |
1646 | DUPLICATE_SAME_ACCESS)) | |
1647 | report_file_error ("Duplicating output handle for child", Qnil); | |
177c0ea7 | 1648 | |
c519b5e1 GV |
1649 | if (!DuplicateHandle (parent, |
1650 | (HANDLE) _get_osfhandle (err), | |
1651 | parent, | |
1652 | &newstderr, | |
1653 | 0, | |
1654 | TRUE, | |
1655 | DUPLICATE_SAME_ACCESS)) | |
1656 | report_file_error ("Duplicating error handle for child", Qnil); | |
1657 | ||
1658 | /* and store them as our std handles */ | |
1659 | if (!SetStdHandle (STD_INPUT_HANDLE, newstdin)) | |
1660 | report_file_error ("Changing stdin handle", Qnil); | |
177c0ea7 | 1661 | |
c519b5e1 GV |
1662 | if (!SetStdHandle (STD_OUTPUT_HANDLE, newstdout)) |
1663 | report_file_error ("Changing stdout handle", Qnil); | |
1664 | ||
1665 | if (!SetStdHandle (STD_ERROR_HANDLE, newstderr)) | |
1666 | report_file_error ("Changing stderr handle", Qnil); | |
1667 | } | |
1668 | ||
1669 | void | |
1670 | reset_standard_handles (int in, int out, int err, HANDLE handles[3]) | |
1671 | { | |
1672 | /* close the duplicated handles passed to the child */ | |
1673 | CloseHandle (GetStdHandle (STD_INPUT_HANDLE)); | |
1674 | CloseHandle (GetStdHandle (STD_OUTPUT_HANDLE)); | |
1675 | CloseHandle (GetStdHandle (STD_ERROR_HANDLE)); | |
1676 | ||
1677 | /* now restore parent's saved std handles */ | |
1678 | SetStdHandle (STD_INPUT_HANDLE, handles[0]); | |
1679 | SetStdHandle (STD_OUTPUT_HANDLE, handles[1]); | |
1680 | SetStdHandle (STD_ERROR_HANDLE, handles[2]); | |
6cdfb6e6 | 1681 | } |
c519b5e1 | 1682 | |
b2fc9f3d GV |
1683 | void |
1684 | set_process_dir (char * dir) | |
1685 | { | |
1686 | process_dir = dir; | |
1687 | } | |
1688 | ||
a11e68d0 RS |
1689 | /* To avoid problems with winsock implementations that work over dial-up |
1690 | connections causing or requiring a connection to exist while Emacs is | |
1691 | running, Emacs no longer automatically loads winsock on startup if it | |
1692 | is present. Instead, it will be loaded when open-network-stream is | |
1693 | first called. | |
1694 | ||
1695 | To allow full control over when winsock is loaded, we provide these | |
1696 | two functions to dynamically load and unload winsock. This allows | |
1697 | dial-up users to only be connected when they actually need to use | |
1698 | socket services. */ | |
1699 | ||
7684e57b | 1700 | /* From w32.c */ |
a11e68d0 RS |
1701 | extern HANDLE winsock_lib; |
1702 | extern BOOL term_winsock (void); | |
1703 | extern BOOL init_winsock (int load_now); | |
1704 | ||
fbd6baed | 1705 | DEFUN ("w32-has-winsock", Fw32_has_winsock, Sw32_has_winsock, 0, 1, 0, |
33f09670 JR |
1706 | doc: /* Test for presence of the Windows socket library `winsock'. |
1707 | Returns non-nil if winsock support is present, nil otherwise. | |
1708 | ||
1709 | If the optional argument LOAD-NOW is non-nil, the winsock library is | |
1710 | also loaded immediately if not already loaded. If winsock is loaded, | |
1711 | the winsock local hostname is returned (since this may be different from | |
1712 | the value of `system-name' and should supplant it), otherwise t is | |
1713 | returned to indicate winsock support is present. */) | |
5842a27b | 1714 | (Lisp_Object load_now) |
a11e68d0 RS |
1715 | { |
1716 | int have_winsock; | |
1717 | ||
1718 | have_winsock = init_winsock (!NILP (load_now)); | |
1719 | if (have_winsock) | |
1720 | { | |
1721 | if (winsock_lib != NULL) | |
1722 | { | |
1723 | /* Return new value for system-name. The best way to do this | |
1724 | is to call init_system_name, saving and restoring the | |
1725 | original value to avoid side-effects. */ | |
1726 | Lisp_Object orig_hostname = Vsystem_name; | |
1727 | Lisp_Object hostname; | |
1728 | ||
1729 | init_system_name (); | |
1730 | hostname = Vsystem_name; | |
1731 | Vsystem_name = orig_hostname; | |
1732 | return hostname; | |
1733 | } | |
1734 | return Qt; | |
1735 | } | |
1736 | return Qnil; | |
1737 | } | |
1738 | ||
fbd6baed | 1739 | DEFUN ("w32-unload-winsock", Fw32_unload_winsock, Sw32_unload_winsock, |
a11e68d0 | 1740 | 0, 0, 0, |
33f09670 JR |
1741 | doc: /* Unload the Windows socket library `winsock' if loaded. |
1742 | This is provided to allow dial-up socket connections to be disconnected | |
1743 | when no longer needed. Returns nil without unloading winsock if any | |
1744 | socket connections still exist. */) | |
5842a27b | 1745 | (void) |
a11e68d0 RS |
1746 | { |
1747 | return term_winsock () ? Qt : Qnil; | |
1748 | } | |
1749 | ||
93fdf2f8 | 1750 | \f |
b2fc9f3d GV |
1751 | /* Some miscellaneous functions that are Windows specific, but not GUI |
1752 | specific (ie. are applicable in terminal or batch mode as well). */ | |
1753 | ||
b2fc9f3d | 1754 | DEFUN ("w32-short-file-name", Fw32_short_file_name, Sw32_short_file_name, 1, 1, 0, |
33f09670 JR |
1755 | doc: /* Return the short file name version (8.3) of the full path of FILENAME. |
1756 | If FILENAME does not exist, return nil. | |
1757 | All path elements in FILENAME are converted to their short names. */) | |
5842a27b | 1758 | (Lisp_Object filename) |
b2fc9f3d GV |
1759 | { |
1760 | char shortname[MAX_PATH]; | |
1761 | ||
b7826503 | 1762 | CHECK_STRING (filename); |
b2fc9f3d GV |
1763 | |
1764 | /* first expand it. */ | |
1765 | filename = Fexpand_file_name (filename, Qnil); | |
1766 | ||
1767 | /* luckily, this returns the short version of each element in the path. */ | |
b23077df | 1768 | if (GetShortPathName (SDATA (ENCODE_FILE (filename)), shortname, MAX_PATH) == 0) |
b2fc9f3d GV |
1769 | return Qnil; |
1770 | ||
087fc47a | 1771 | dostounix_filename (shortname); |
b2fc9f3d GV |
1772 | |
1773 | return build_string (shortname); | |
1774 | } | |
1775 | ||
1776 | ||
1777 | DEFUN ("w32-long-file-name", Fw32_long_file_name, Sw32_long_file_name, | |
1778 | 1, 1, 0, | |
33f09670 JR |
1779 | doc: /* Return the long file name version of the full path of FILENAME. |
1780 | If FILENAME does not exist, return nil. | |
1781 | All path elements in FILENAME are converted to their long names. */) | |
5842a27b | 1782 | (Lisp_Object filename) |
b2fc9f3d GV |
1783 | { |
1784 | char longname[ MAX_PATH ]; | |
8dcaeba2 | 1785 | int drive_only = 0; |
b2fc9f3d | 1786 | |
b7826503 | 1787 | CHECK_STRING (filename); |
b2fc9f3d | 1788 | |
8dcaeba2 JR |
1789 | if (SBYTES (filename) == 2 |
1790 | && *(SDATA (filename) + 1) == ':') | |
1791 | drive_only = 1; | |
1792 | ||
b2fc9f3d GV |
1793 | /* first expand it. */ |
1794 | filename = Fexpand_file_name (filename, Qnil); | |
1795 | ||
b23077df | 1796 | if (!w32_get_long_filename (SDATA (ENCODE_FILE (filename)), longname, MAX_PATH)) |
b2fc9f3d GV |
1797 | return Qnil; |
1798 | ||
087fc47a | 1799 | dostounix_filename (longname); |
b2fc9f3d | 1800 | |
8dcaeba2 JR |
1801 | /* If we were passed only a drive, make sure that a slash is not appended |
1802 | for consistency with directories. Allow for drive mapping via SUBST | |
1803 | in case expand-file-name is ever changed to expand those. */ | |
1804 | if (drive_only && longname[1] == ':' && longname[2] == '/' && !longname[3]) | |
1805 | longname[2] = '\0'; | |
1806 | ||
b23077df | 1807 | return DECODE_FILE (build_string (longname)); |
b2fc9f3d GV |
1808 | } |
1809 | ||
33f09670 JR |
1810 | DEFUN ("w32-set-process-priority", Fw32_set_process_priority, |
1811 | Sw32_set_process_priority, 2, 2, 0, | |
1812 | doc: /* Set the priority of PROCESS to PRIORITY. | |
1813 | If PROCESS is nil, the priority of Emacs is changed, otherwise the | |
1814 | priority of the process whose pid is PROCESS is changed. | |
1815 | PRIORITY should be one of the symbols high, normal, or low; | |
1816 | any other symbol will be interpreted as normal. | |
1817 | ||
1818 | If successful, the return value is t, otherwise nil. */) | |
5842a27b | 1819 | (Lisp_Object process, Lisp_Object priority) |
b2fc9f3d GV |
1820 | { |
1821 | HANDLE proc_handle = GetCurrentProcess (); | |
1822 | DWORD priority_class = NORMAL_PRIORITY_CLASS; | |
1823 | Lisp_Object result = Qnil; | |
1824 | ||
b7826503 | 1825 | CHECK_SYMBOL (priority); |
b2fc9f3d GV |
1826 | |
1827 | if (!NILP (process)) | |
1828 | { | |
1829 | DWORD pid; | |
1830 | child_process *cp; | |
1831 | ||
b7826503 | 1832 | CHECK_NUMBER (process); |
b2fc9f3d GV |
1833 | |
1834 | /* Allow pid to be an internally generated one, or one obtained | |
b46a6a83 | 1835 | externally. This is necessary because real pids on Windows 95 are |
b2fc9f3d GV |
1836 | negative. */ |
1837 | ||
1838 | pid = XINT (process); | |
1839 | cp = find_child_pid (pid); | |
1840 | if (cp != NULL) | |
1841 | pid = cp->procinfo.dwProcessId; | |
1842 | ||
1843 | proc_handle = OpenProcess (PROCESS_SET_INFORMATION, FALSE, pid); | |
1844 | } | |
1845 | ||
1846 | if (EQ (priority, Qhigh)) | |
1847 | priority_class = HIGH_PRIORITY_CLASS; | |
1848 | else if (EQ (priority, Qlow)) | |
1849 | priority_class = IDLE_PRIORITY_CLASS; | |
1850 | ||
1851 | if (proc_handle != NULL) | |
1852 | { | |
1853 | if (SetPriorityClass (proc_handle, priority_class)) | |
1854 | result = Qt; | |
1855 | if (!NILP (process)) | |
1856 | CloseHandle (proc_handle); | |
1857 | } | |
1858 | ||
1859 | return result; | |
1860 | } | |
1861 | ||
d613418b EZ |
1862 | #ifdef HAVE_LANGINFO_CODESET |
1863 | /* Emulation of nl_langinfo. Used in fns.c:Flocale_info. */ | |
b56ceb92 JB |
1864 | char * |
1865 | nl_langinfo (nl_item item) | |
d613418b EZ |
1866 | { |
1867 | /* Conversion of Posix item numbers to their Windows equivalents. */ | |
1868 | static const LCTYPE w32item[] = { | |
1869 | LOCALE_IDEFAULTANSICODEPAGE, | |
1870 | LOCALE_SDAYNAME1, LOCALE_SDAYNAME2, LOCALE_SDAYNAME3, | |
1871 | LOCALE_SDAYNAME4, LOCALE_SDAYNAME5, LOCALE_SDAYNAME6, LOCALE_SDAYNAME7, | |
1872 | LOCALE_SMONTHNAME1, LOCALE_SMONTHNAME2, LOCALE_SMONTHNAME3, | |
1873 | LOCALE_SMONTHNAME4, LOCALE_SMONTHNAME5, LOCALE_SMONTHNAME6, | |
1874 | LOCALE_SMONTHNAME7, LOCALE_SMONTHNAME8, LOCALE_SMONTHNAME9, | |
1875 | LOCALE_SMONTHNAME10, LOCALE_SMONTHNAME11, LOCALE_SMONTHNAME12 | |
1876 | }; | |
1877 | ||
1878 | static char *nl_langinfo_buf = NULL; | |
1879 | static int nl_langinfo_len = 0; | |
1880 | ||
1881 | if (nl_langinfo_len <= 0) | |
1882 | nl_langinfo_buf = xmalloc (nl_langinfo_len = 1); | |
1883 | ||
1884 | if (item < 0 || item >= _NL_NUM) | |
1885 | nl_langinfo_buf[0] = 0; | |
1886 | else | |
1887 | { | |
1888 | LCID cloc = GetThreadLocale (); | |
1889 | int need_len = GetLocaleInfo (cloc, w32item[item] | LOCALE_USE_CP_ACP, | |
1890 | NULL, 0); | |
1891 | ||
1892 | if (need_len <= 0) | |
1893 | nl_langinfo_buf[0] = 0; | |
1894 | else | |
1895 | { | |
1896 | if (item == CODESET) | |
1897 | { | |
1898 | need_len += 2; /* for the "cp" prefix */ | |
1899 | if (need_len < 8) /* for the case we call GetACP */ | |
1900 | need_len = 8; | |
1901 | } | |
1902 | if (nl_langinfo_len <= need_len) | |
1903 | nl_langinfo_buf = xrealloc (nl_langinfo_buf, | |
1904 | nl_langinfo_len = need_len); | |
1905 | if (!GetLocaleInfo (cloc, w32item[item] | LOCALE_USE_CP_ACP, | |
1906 | nl_langinfo_buf, nl_langinfo_len)) | |
1907 | nl_langinfo_buf[0] = 0; | |
1908 | else if (item == CODESET) | |
1909 | { | |
1910 | if (strcmp (nl_langinfo_buf, "0") == 0 /* CP_ACP */ | |
1911 | || strcmp (nl_langinfo_buf, "1") == 0) /* CP_OEMCP */ | |
1912 | sprintf (nl_langinfo_buf, "cp%u", GetACP ()); | |
1913 | else | |
1914 | { | |
1915 | memmove (nl_langinfo_buf + 2, nl_langinfo_buf, | |
1916 | strlen (nl_langinfo_buf) + 1); | |
1917 | nl_langinfo_buf[0] = 'c'; | |
1918 | nl_langinfo_buf[1] = 'p'; | |
1919 | } | |
1920 | } | |
1921 | } | |
1922 | } | |
1923 | return nl_langinfo_buf; | |
1924 | } | |
1925 | #endif /* HAVE_LANGINFO_CODESET */ | |
b2fc9f3d | 1926 | |
33f09670 JR |
1927 | DEFUN ("w32-get-locale-info", Fw32_get_locale_info, |
1928 | Sw32_get_locale_info, 1, 2, 0, | |
1929 | doc: /* Return information about the Windows locale LCID. | |
1930 | By default, return a three letter locale code which encodes the default | |
35f36d65 | 1931 | language as the first two characters, and the country or regional variant |
33f09670 JR |
1932 | as the third letter. For example, ENU refers to `English (United States)', |
1933 | while ENC means `English (Canadian)'. | |
1934 | ||
1935 | If the optional argument LONGFORM is t, the long form of the locale | |
1936 | name is returned, e.g. `English (United States)' instead; if LONGFORM | |
1937 | is a number, it is interpreted as an LCTYPE constant and the corresponding | |
1938 | locale information is returned. | |
1939 | ||
1940 | If LCID (a 16-bit number) is not a valid locale, the result is nil. */) | |
5842a27b | 1941 | (Lisp_Object lcid, Lisp_Object longform) |
b2fc9f3d GV |
1942 | { |
1943 | int got_abbrev; | |
1944 | int got_full; | |
1945 | char abbrev_name[32] = { 0 }; | |
1946 | char full_name[256] = { 0 }; | |
1947 | ||
b7826503 | 1948 | CHECK_NUMBER (lcid); |
b2fc9f3d GV |
1949 | |
1950 | if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED)) | |
1951 | return Qnil; | |
1952 | ||
1953 | if (NILP (longform)) | |
1954 | { | |
1955 | got_abbrev = GetLocaleInfo (XINT (lcid), | |
1956 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
1957 | abbrev_name, sizeof (abbrev_name)); | |
1958 | if (got_abbrev) | |
1959 | return build_string (abbrev_name); | |
1960 | } | |
0eaf5926 | 1961 | else if (EQ (longform, Qt)) |
b2fc9f3d GV |
1962 | { |
1963 | got_full = GetLocaleInfo (XINT (lcid), | |
1964 | LOCALE_SLANGUAGE | LOCALE_USE_CP_ACP, | |
1965 | full_name, sizeof (full_name)); | |
1966 | if (got_full) | |
011a0143 | 1967 | return DECODE_SYSTEM (build_string (full_name)); |
b2fc9f3d | 1968 | } |
0eaf5926 GV |
1969 | else if (NUMBERP (longform)) |
1970 | { | |
1971 | got_full = GetLocaleInfo (XINT (lcid), | |
1972 | XINT (longform), | |
1973 | full_name, sizeof (full_name)); | |
96512555 EZ |
1974 | /* GetLocaleInfo's return value includes the terminating null |
1975 | character, when the returned information is a string, whereas | |
1976 | make_unibyte_string needs the string length without the | |
1977 | terminating null. */ | |
0eaf5926 | 1978 | if (got_full) |
96512555 | 1979 | return make_unibyte_string (full_name, got_full - 1); |
0eaf5926 | 1980 | } |
b2fc9f3d GV |
1981 | |
1982 | return Qnil; | |
1983 | } | |
1984 | ||
1985 | ||
33f09670 JR |
1986 | DEFUN ("w32-get-current-locale-id", Fw32_get_current_locale_id, |
1987 | Sw32_get_current_locale_id, 0, 0, 0, | |
1988 | doc: /* Return Windows locale id for current locale setting. | |
1989 | This is a numerical value; use `w32-get-locale-info' to convert to a | |
1990 | human-readable form. */) | |
5842a27b | 1991 | (void) |
b2fc9f3d GV |
1992 | { |
1993 | return make_number (GetThreadLocale ()); | |
1994 | } | |
1995 | ||
24f981c9 | 1996 | static DWORD |
b56ceb92 | 1997 | int_from_hex (char * s) |
ef79fbba GV |
1998 | { |
1999 | DWORD val = 0; | |
2000 | static char hex[] = "0123456789abcdefABCDEF"; | |
2001 | char * p; | |
2002 | ||
ed3751c8 | 2003 | while (*s && (p = strchr (hex, *s)) != NULL) |
ef79fbba GV |
2004 | { |
2005 | unsigned digit = p - hex; | |
2006 | if (digit > 15) | |
2007 | digit -= 6; | |
2008 | val = val * 16 + digit; | |
2009 | s++; | |
2010 | } | |
2011 | return val; | |
2012 | } | |
2013 | ||
2014 | /* We need to build a global list, since the EnumSystemLocale callback | |
2015 | function isn't given a context pointer. */ | |
2016 | Lisp_Object Vw32_valid_locale_ids; | |
2017 | ||
24f981c9 | 2018 | static BOOL CALLBACK |
b56ceb92 | 2019 | enum_locale_fn (LPTSTR localeNum) |
ef79fbba GV |
2020 | { |
2021 | DWORD id = int_from_hex (localeNum); | |
2022 | Vw32_valid_locale_ids = Fcons (make_number (id), Vw32_valid_locale_ids); | |
2023 | return TRUE; | |
2024 | } | |
2025 | ||
33f09670 JR |
2026 | DEFUN ("w32-get-valid-locale-ids", Fw32_get_valid_locale_ids, |
2027 | Sw32_get_valid_locale_ids, 0, 0, 0, | |
2028 | doc: /* Return list of all valid Windows locale ids. | |
2029 | Each id is a numerical value; use `w32-get-locale-info' to convert to a | |
2030 | human-readable form. */) | |
5842a27b | 2031 | (void) |
ef79fbba GV |
2032 | { |
2033 | Vw32_valid_locale_ids = Qnil; | |
2034 | ||
2035 | EnumSystemLocales (enum_locale_fn, LCID_SUPPORTED); | |
2036 | ||
2037 | Vw32_valid_locale_ids = Fnreverse (Vw32_valid_locale_ids); | |
2038 | return Vw32_valid_locale_ids; | |
2039 | } | |
2040 | ||
b2fc9f3d GV |
2041 | |
2042 | DEFUN ("w32-get-default-locale-id", Fw32_get_default_locale_id, Sw32_get_default_locale_id, 0, 1, 0, | |
33f09670 JR |
2043 | doc: /* Return Windows locale id for default locale setting. |
2044 | By default, the system default locale setting is returned; if the optional | |
2045 | parameter USERP is non-nil, the user default locale setting is returned. | |
2046 | This is a numerical value; use `w32-get-locale-info' to convert to a | |
2047 | human-readable form. */) | |
5842a27b | 2048 | (Lisp_Object userp) |
b2fc9f3d GV |
2049 | { |
2050 | if (NILP (userp)) | |
2051 | return make_number (GetSystemDefaultLCID ()); | |
2052 | return make_number (GetUserDefaultLCID ()); | |
2053 | } | |
2054 | ||
177c0ea7 | 2055 | |
b2fc9f3d | 2056 | DEFUN ("w32-set-current-locale", Fw32_set_current_locale, Sw32_set_current_locale, 1, 1, 0, |
33f09670 JR |
2057 | doc: /* Make Windows locale LCID be the current locale setting for Emacs. |
2058 | If successful, the new locale id is returned, otherwise nil. */) | |
5842a27b | 2059 | (Lisp_Object lcid) |
b2fc9f3d | 2060 | { |
b7826503 | 2061 | CHECK_NUMBER (lcid); |
b2fc9f3d GV |
2062 | |
2063 | if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED)) | |
2064 | return Qnil; | |
2065 | ||
2066 | if (!SetThreadLocale (XINT (lcid))) | |
2067 | return Qnil; | |
2068 | ||
ef79fbba GV |
2069 | /* Need to set input thread locale if present. */ |
2070 | if (dwWindowsThreadId) | |
2071 | /* Reply is not needed. */ | |
2072 | PostThreadMessage (dwWindowsThreadId, WM_EMACS_SETLOCALE, XINT (lcid), 0); | |
2073 | ||
b2fc9f3d GV |
2074 | return make_number (GetThreadLocale ()); |
2075 | } | |
2076 | ||
0eaf5926 GV |
2077 | |
2078 | /* We need to build a global list, since the EnumCodePages callback | |
2079 | function isn't given a context pointer. */ | |
2080 | Lisp_Object Vw32_valid_codepages; | |
2081 | ||
24f981c9 | 2082 | static BOOL CALLBACK |
b56ceb92 | 2083 | enum_codepage_fn (LPTSTR codepageNum) |
0eaf5926 GV |
2084 | { |
2085 | DWORD id = atoi (codepageNum); | |
2086 | Vw32_valid_codepages = Fcons (make_number (id), Vw32_valid_codepages); | |
2087 | return TRUE; | |
2088 | } | |
2089 | ||
33f09670 JR |
2090 | DEFUN ("w32-get-valid-codepages", Fw32_get_valid_codepages, |
2091 | Sw32_get_valid_codepages, 0, 0, 0, | |
2092 | doc: /* Return list of all valid Windows codepages. */) | |
5842a27b | 2093 | (void) |
0eaf5926 GV |
2094 | { |
2095 | Vw32_valid_codepages = Qnil; | |
2096 | ||
2097 | EnumSystemCodePages (enum_codepage_fn, CP_SUPPORTED); | |
2098 | ||
2099 | Vw32_valid_codepages = Fnreverse (Vw32_valid_codepages); | |
2100 | return Vw32_valid_codepages; | |
2101 | } | |
2102 | ||
2103 | ||
33f09670 JR |
2104 | DEFUN ("w32-get-console-codepage", Fw32_get_console_codepage, |
2105 | Sw32_get_console_codepage, 0, 0, 0, | |
2106 | doc: /* Return current Windows codepage for console input. */) | |
5842a27b | 2107 | (void) |
0eaf5926 GV |
2108 | { |
2109 | return make_number (GetConsoleCP ()); | |
2110 | } | |
2111 | ||
177c0ea7 | 2112 | |
33f09670 JR |
2113 | DEFUN ("w32-set-console-codepage", Fw32_set_console_codepage, |
2114 | Sw32_set_console_codepage, 1, 1, 0, | |
62356a1b EZ |
2115 | doc: /* Make Windows codepage CP be the codepage for Emacs tty keyboard input. |
2116 | This codepage setting affects keyboard input in tty mode. | |
33f09670 | 2117 | If successful, the new CP is returned, otherwise nil. */) |
5842a27b | 2118 | (Lisp_Object cp) |
0eaf5926 | 2119 | { |
b7826503 | 2120 | CHECK_NUMBER (cp); |
0eaf5926 GV |
2121 | |
2122 | if (!IsValidCodePage (XINT (cp))) | |
2123 | return Qnil; | |
2124 | ||
2125 | if (!SetConsoleCP (XINT (cp))) | |
2126 | return Qnil; | |
2127 | ||
2128 | return make_number (GetConsoleCP ()); | |
2129 | } | |
2130 | ||
2131 | ||
33f09670 JR |
2132 | DEFUN ("w32-get-console-output-codepage", Fw32_get_console_output_codepage, |
2133 | Sw32_get_console_output_codepage, 0, 0, 0, | |
2134 | doc: /* Return current Windows codepage for console output. */) | |
5842a27b | 2135 | (void) |
0eaf5926 GV |
2136 | { |
2137 | return make_number (GetConsoleOutputCP ()); | |
2138 | } | |
2139 | ||
177c0ea7 | 2140 | |
33f09670 JR |
2141 | DEFUN ("w32-set-console-output-codepage", Fw32_set_console_output_codepage, |
2142 | Sw32_set_console_output_codepage, 1, 1, 0, | |
62356a1b EZ |
2143 | doc: /* Make Windows codepage CP be the codepage for Emacs console output. |
2144 | This codepage setting affects display in tty mode. | |
33f09670 | 2145 | If successful, the new CP is returned, otherwise nil. */) |
5842a27b | 2146 | (Lisp_Object cp) |
0eaf5926 | 2147 | { |
b7826503 | 2148 | CHECK_NUMBER (cp); |
0eaf5926 GV |
2149 | |
2150 | if (!IsValidCodePage (XINT (cp))) | |
2151 | return Qnil; | |
2152 | ||
2153 | if (!SetConsoleOutputCP (XINT (cp))) | |
2154 | return Qnil; | |
2155 | ||
2156 | return make_number (GetConsoleOutputCP ()); | |
2157 | } | |
2158 | ||
2159 | ||
33f09670 JR |
2160 | DEFUN ("w32-get-codepage-charset", Fw32_get_codepage_charset, |
2161 | Sw32_get_codepage_charset, 1, 1, 0, | |
62356a1b | 2162 | doc: /* Return charset ID corresponding to codepage CP. |
33f09670 | 2163 | Returns nil if the codepage is not valid. */) |
5842a27b | 2164 | (Lisp_Object cp) |
0eaf5926 GV |
2165 | { |
2166 | CHARSETINFO info; | |
2167 | ||
b7826503 | 2168 | CHECK_NUMBER (cp); |
0eaf5926 GV |
2169 | |
2170 | if (!IsValidCodePage (XINT (cp))) | |
2171 | return Qnil; | |
2172 | ||
2173 | if (TranslateCharsetInfo ((DWORD *) XINT (cp), &info, TCI_SRCCODEPAGE)) | |
2174 | return make_number (info.ciCharset); | |
2175 | ||
2176 | return Qnil; | |
2177 | } | |
2178 | ||
2179 | ||
33f09670 JR |
2180 | DEFUN ("w32-get-valid-keyboard-layouts", Fw32_get_valid_keyboard_layouts, |
2181 | Sw32_get_valid_keyboard_layouts, 0, 0, 0, | |
2182 | doc: /* Return list of Windows keyboard languages and layouts. | |
2183 | The return value is a list of pairs of language id and layout id. */) | |
5842a27b | 2184 | (void) |
0eaf5926 GV |
2185 | { |
2186 | int num_layouts = GetKeyboardLayoutList (0, NULL); | |
2187 | HKL * layouts = (HKL *) alloca (num_layouts * sizeof (HKL)); | |
2188 | Lisp_Object obj = Qnil; | |
2189 | ||
2190 | if (GetKeyboardLayoutList (num_layouts, layouts) == num_layouts) | |
2191 | { | |
2192 | while (--num_layouts >= 0) | |
2193 | { | |
2194 | DWORD kl = (DWORD) layouts[num_layouts]; | |
2195 | ||
2196 | obj = Fcons (Fcons (make_number (kl & 0xffff), | |
2197 | make_number ((kl >> 16) & 0xffff)), | |
2198 | obj); | |
2199 | } | |
2200 | } | |
2201 | ||
2202 | return obj; | |
2203 | } | |
2204 | ||
2205 | ||
33f09670 JR |
2206 | DEFUN ("w32-get-keyboard-layout", Fw32_get_keyboard_layout, |
2207 | Sw32_get_keyboard_layout, 0, 0, 0, | |
2208 | doc: /* Return current Windows keyboard language and layout. | |
2209 | The return value is the cons of the language id and the layout id. */) | |
5842a27b | 2210 | (void) |
0eaf5926 GV |
2211 | { |
2212 | DWORD kl = (DWORD) GetKeyboardLayout (dwWindowsThreadId); | |
2213 | ||
2214 | return Fcons (make_number (kl & 0xffff), | |
2215 | make_number ((kl >> 16) & 0xffff)); | |
2216 | } | |
2217 | ||
177c0ea7 | 2218 | |
33f09670 JR |
2219 | DEFUN ("w32-set-keyboard-layout", Fw32_set_keyboard_layout, |
2220 | Sw32_set_keyboard_layout, 1, 1, 0, | |
2221 | doc: /* Make LAYOUT be the current keyboard layout for Emacs. | |
2222 | The keyboard layout setting affects interpretation of keyboard input. | |
2223 | If successful, the new layout id is returned, otherwise nil. */) | |
5842a27b | 2224 | (Lisp_Object layout) |
0eaf5926 GV |
2225 | { |
2226 | DWORD kl; | |
2227 | ||
b7826503 | 2228 | CHECK_CONS (layout); |
f4532092 AI |
2229 | CHECK_NUMBER_CAR (layout); |
2230 | CHECK_NUMBER_CDR (layout); | |
0eaf5926 | 2231 | |
8e713be6 KR |
2232 | kl = (XINT (XCAR (layout)) & 0xffff) |
2233 | | (XINT (XCDR (layout)) << 16); | |
0eaf5926 GV |
2234 | |
2235 | /* Synchronize layout with input thread. */ | |
2236 | if (dwWindowsThreadId) | |
2237 | { | |
2238 | if (PostThreadMessage (dwWindowsThreadId, WM_EMACS_SETKEYBOARDLAYOUT, | |
2239 | (WPARAM) kl, 0)) | |
2240 | { | |
2241 | MSG msg; | |
2242 | GetMessage (&msg, NULL, WM_EMACS_DONE, WM_EMACS_DONE); | |
2243 | ||
2244 | if (msg.wParam == 0) | |
2245 | return Qnil; | |
2246 | } | |
2247 | } | |
2248 | else if (!ActivateKeyboardLayout ((HKL) kl, 0)) | |
2249 | return Qnil; | |
2250 | ||
2251 | return Fw32_get_keyboard_layout (); | |
2252 | } | |
2253 | ||
b2fc9f3d | 2254 | \f |
b56ceb92 JB |
2255 | void |
2256 | syms_of_ntproc (void) | |
93fdf2f8 | 2257 | { |
51128692 JR |
2258 | DEFSYM (Qhigh, "high"); |
2259 | DEFSYM (Qlow, "low"); | |
b2fc9f3d | 2260 | |
fbd6baed GV |
2261 | defsubr (&Sw32_has_winsock); |
2262 | defsubr (&Sw32_unload_winsock); | |
7d701334 | 2263 | |
b2fc9f3d GV |
2264 | defsubr (&Sw32_short_file_name); |
2265 | defsubr (&Sw32_long_file_name); | |
2266 | defsubr (&Sw32_set_process_priority); | |
2267 | defsubr (&Sw32_get_locale_info); | |
2268 | defsubr (&Sw32_get_current_locale_id); | |
2269 | defsubr (&Sw32_get_default_locale_id); | |
ef79fbba | 2270 | defsubr (&Sw32_get_valid_locale_ids); |
b2fc9f3d | 2271 | defsubr (&Sw32_set_current_locale); |
a11e68d0 | 2272 | |
0eaf5926 GV |
2273 | defsubr (&Sw32_get_console_codepage); |
2274 | defsubr (&Sw32_set_console_codepage); | |
2275 | defsubr (&Sw32_get_console_output_codepage); | |
2276 | defsubr (&Sw32_set_console_output_codepage); | |
2277 | defsubr (&Sw32_get_valid_codepages); | |
2278 | defsubr (&Sw32_get_codepage_charset); | |
2279 | ||
2280 | defsubr (&Sw32_get_valid_keyboard_layouts); | |
2281 | defsubr (&Sw32_get_keyboard_layout); | |
2282 | defsubr (&Sw32_set_keyboard_layout); | |
2283 | ||
29208e82 | 2284 | DEFVAR_LISP ("w32-quote-process-args", Vw32_quote_process_args, |
33f09670 JR |
2285 | doc: /* Non-nil enables quoting of process arguments to ensure correct parsing. |
2286 | Because Windows does not directly pass argv arrays to child processes, | |
2287 | programs have to reconstruct the argv array by parsing the command | |
2288 | line string. For an argument to contain a space, it must be enclosed | |
2289 | in double quotes or it will be parsed as multiple arguments. | |
2290 | ||
2291 | If the value is a character, that character will be used to escape any | |
2292 | quote characters that appear, otherwise a suitable escape character | |
2293 | will be chosen based on the type of the program. */); | |
b2fc9f3d | 2294 | Vw32_quote_process_args = Qt; |
817abdf6 | 2295 | |
fbd6baed | 2296 | DEFVAR_LISP ("w32-start-process-show-window", |
29208e82 | 2297 | Vw32_start_process_show_window, |
33f09670 JR |
2298 | doc: /* When nil, new child processes hide their windows. |
2299 | When non-nil, they show their window in the method of their choice. | |
2300 | This variable doesn't affect GUI applications, which will never be hidden. */); | |
fbd6baed | 2301 | Vw32_start_process_show_window = Qnil; |
0ecf7d36 | 2302 | |
b2fc9f3d | 2303 | DEFVAR_LISP ("w32-start-process-share-console", |
29208e82 | 2304 | Vw32_start_process_share_console, |
33f09670 JR |
2305 | doc: /* When nil, new child processes are given a new console. |
2306 | When non-nil, they share the Emacs console; this has the limitation of | |
804d894a | 2307 | allowing only one DOS subprocess to run at a time (whether started directly |
33f09670 JR |
2308 | or indirectly by Emacs), and preventing Emacs from cleanly terminating the |
2309 | subprocess group, but may allow Emacs to interrupt a subprocess that doesn't | |
2310 | otherwise respond to interrupts from Emacs. */); | |
b2fc9f3d GV |
2311 | Vw32_start_process_share_console = Qnil; |
2312 | ||
82e7c0a9 | 2313 | DEFVAR_LISP ("w32-start-process-inherit-error-mode", |
29208e82 | 2314 | Vw32_start_process_inherit_error_mode, |
33f09670 JR |
2315 | doc: /* When nil, new child processes revert to the default error mode. |
2316 | When non-nil, they inherit their error mode setting from Emacs, which stops | |
2317 | them blocking when trying to access unmounted drives etc. */); | |
82e7c0a9 AI |
2318 | Vw32_start_process_inherit_error_mode = Qt; |
2319 | ||
29208e82 | 2320 | DEFVAR_INT ("w32-pipe-read-delay", w32_pipe_read_delay, |
33f09670 JR |
2321 | doc: /* Forced delay before reading subprocess output. |
2322 | This is done to improve the buffering of subprocess output, by | |
2323 | avoiding the inefficiency of frequently reading small amounts of data. | |
2324 | ||
2325 | If positive, the value is the number of milliseconds to sleep before | |
2326 | reading the subprocess output. If negative, the magnitude is the number | |
2327 | of time slices to wait (effectively boosting the priority of the child | |
2328 | process temporarily). A value of zero disables waiting entirely. */); | |
5322f50b | 2329 | w32_pipe_read_delay = 50; |
0c04091e | 2330 | |
29208e82 | 2331 | DEFVAR_LISP ("w32-downcase-file-names", Vw32_downcase_file_names, |
33f09670 JR |
2332 | doc: /* Non-nil means convert all-upper case file names to lower case. |
2333 | This applies when performing completions and file name expansion. | |
2334 | Note that the value of this setting also affects remote file names, | |
2335 | so you probably don't want to set to non-nil if you use case-sensitive | |
177c0ea7 | 2336 | filesystems via ange-ftp. */); |
fbd6baed | 2337 | Vw32_downcase_file_names = Qnil; |
b2fc9f3d GV |
2338 | |
2339 | #if 0 | |
29208e82 | 2340 | DEFVAR_LISP ("w32-generate-fake-inodes", Vw32_generate_fake_inodes, |
33f09670 JR |
2341 | doc: /* Non-nil means attempt to fake realistic inode values. |
2342 | This works by hashing the truename of files, and should detect | |
2343 | aliasing between long and short (8.3 DOS) names, but can have | |
4c36be58 | 2344 | false positives because of hash collisions. Note that determining |
33f09670 | 2345 | the truename of a file can be slow. */); |
b2fc9f3d GV |
2346 | Vw32_generate_fake_inodes = Qnil; |
2347 | #endif | |
2348 | ||
29208e82 | 2349 | DEFVAR_LISP ("w32-get-true-file-attributes", Vw32_get_true_file_attributes, |
ed4c17bb EZ |
2350 | doc: /* Non-nil means determine accurate file attributes in `file-attributes'. |
2351 | This option controls whether to issue additional system calls to determine | |
017dab84 | 2352 | accurate link counts, file type, and ownership information. It is more |
ed4c17bb | 2353 | useful for files on NTFS volumes, where hard links and file security are |
017dab84 | 2354 | supported, than on volumes of the FAT family. |
ed4c17bb EZ |
2355 | |
2356 | Without these system calls, link count will always be reported as 1 and file | |
2357 | ownership will be attributed to the current user. | |
2358 | The default value `local' means only issue these system calls for files | |
2359 | on local fixed drives. A value of nil means never issue them. | |
2360 | Any other non-nil value means do this even on remote and removable drives | |
2361 | where the performance impact may be noticeable even on modern hardware. */); | |
2fa4f090 | 2362 | Vw32_get_true_file_attributes = Qlocal; |
af621bc3 EZ |
2363 | |
2364 | staticpro (&Vw32_valid_locale_ids); | |
2365 | staticpro (&Vw32_valid_codepages); | |
93fdf2f8 | 2366 | } |
42a7e7f1 | 2367 | /* end of w32proc.c */ |