Commit | Line | Data |
---|---|---|
e9e23e23 | 1 | /* Process support for GNU Emacs on the Microsoft W32 API. |
acba5cae | 2 | Copyright (C) 1992, 95, 99, 2000, 01, 04 Free Software Foundation, Inc. |
6cdfb6e6 | 3 | |
3b7ad313 EN |
4 | This file is part of GNU Emacs. |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
18 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
19 | Boston, MA 02110-1301, USA. | |
6cdfb6e6 RS |
20 | |
21 | Drew Bliss Oct 14, 1993 | |
22 | Adapted from alarm.c by Tim Fleehart | |
23 | */ | |
24 | ||
25 | #include <stdio.h> | |
26 | #include <stdlib.h> | |
27 | #include <errno.h> | |
28 | #include <io.h> | |
c519b5e1 | 29 | #include <fcntl.h> |
6cdfb6e6 | 30 | #include <signal.h> |
51f635c4 | 31 | #include <sys/file.h> |
6cdfb6e6 | 32 | |
c519b5e1 | 33 | /* must include CRT headers *before* config.h */ |
4838e624 PJ |
34 | |
35 | #ifdef HAVE_CONFIG_H | |
36 | #include <config.h> | |
37 | #endif | |
38 | ||
c519b5e1 GV |
39 | #undef signal |
40 | #undef wait | |
41 | #undef spawnve | |
42 | #undef select | |
43 | #undef kill | |
44 | ||
6cdfb6e6 | 45 | #include <windows.h> |
42c95ffb AI |
46 | #ifdef __GNUC__ |
47 | /* This definition is missing from mingw32 headers. */ | |
48 | extern BOOL WINAPI IsValidLocale(LCID, DWORD); | |
49 | #endif | |
6cdfb6e6 RS |
50 | |
51 | #include "lisp.h" | |
489f9371 | 52 | #include "w32.h" |
b2fc9f3d | 53 | #include "w32heap.h" |
6cdfb6e6 | 54 | #include "systime.h" |
3d7eead0 GV |
55 | #include "syswait.h" |
56 | #include "process.h" | |
e7c15bba | 57 | #include "syssignal.h" |
ef79fbba | 58 | #include "w32term.h" |
3d7eead0 | 59 | |
8747ac3f EZ |
60 | #define RVA_TO_PTR(var,section,filedata) \ |
61 | ((void *)((section)->PointerToRawData \ | |
62 | + ((DWORD)(var) - (section)->VirtualAddress) \ | |
63 | + (filedata).file_base)) | |
64 | ||
93fdf2f8 RS |
65 | /* Control whether spawnve quotes arguments as necessary to ensure |
66 | correct parsing by child process. Because not all uses of spawnve | |
67 | are careful about constructing argv arrays, we make this behaviour | |
68 | conditional (off by default). */ | |
fbd6baed | 69 | Lisp_Object Vw32_quote_process_args; |
93fdf2f8 | 70 | |
0ecf7d36 RS |
71 | /* Control whether create_child causes the process' window to be |
72 | hidden. The default is nil. */ | |
fbd6baed | 73 | Lisp_Object Vw32_start_process_show_window; |
0ecf7d36 | 74 | |
b2fc9f3d GV |
75 | /* Control whether create_child causes the process to inherit Emacs' |
76 | console window, or be given a new one of its own. The default is | |
77 | nil, to allow multiple DOS programs to run on Win95. Having separate | |
78 | consoles also allows Emacs to cleanly terminate process groups. */ | |
79 | Lisp_Object Vw32_start_process_share_console; | |
80 | ||
82e7c0a9 AI |
81 | /* Control whether create_child cause the process to inherit Emacs' |
82 | error mode setting. The default is t, to minimize the possibility of | |
83 | subprocesses blocking when accessing unmounted drives. */ | |
84 | Lisp_Object Vw32_start_process_inherit_error_mode; | |
85 | ||
817abdf6 KH |
86 | /* Time to sleep before reading from a subprocess output pipe - this |
87 | avoids the inefficiency of frequently reading small amounts of data. | |
88 | This is primarily necessary for handling DOS processes on Windows 95, | |
e9e23e23 | 89 | but is useful for W32 processes on both Windows 95 and NT as well. */ |
5322f50b | 90 | int w32_pipe_read_delay; |
817abdf6 | 91 | |
0c04091e RS |
92 | /* Control conversion of upper case file names to lower case. |
93 | nil means no, t means yes. */ | |
fbd6baed | 94 | Lisp_Object Vw32_downcase_file_names; |
0c04091e | 95 | |
b2fc9f3d GV |
96 | /* Control whether stat() attempts to generate fake but hopefully |
97 | "accurate" inode values, by hashing the absolute truenames of files. | |
98 | This should detect aliasing between long and short names, but still | |
99 | allows the possibility of hash collisions. */ | |
100 | Lisp_Object Vw32_generate_fake_inodes; | |
101 | ||
102 | /* Control whether stat() attempts to determine file type and link count | |
103 | exactly, at the expense of slower operation. Since true hard links | |
104 | are supported on NTFS volumes, this is only relevant on NT. */ | |
105 | Lisp_Object Vw32_get_true_file_attributes; | |
106 | ||
107 | Lisp_Object Qhigh, Qlow; | |
817abdf6 | 108 | |
6cdfb6e6 | 109 | #ifdef EMACSDEBUG |
c519b5e1 | 110 | void _DebPrint (const char *fmt, ...) |
6cdfb6e6 | 111 | { |
c519b5e1 | 112 | char buf[1024]; |
6cdfb6e6 RS |
113 | va_list args; |
114 | ||
115 | va_start (args, fmt); | |
116 | vsprintf (buf, fmt, args); | |
117 | va_end (args); | |
118 | OutputDebugString (buf); | |
119 | } | |
120 | #endif | |
121 | ||
c519b5e1 | 122 | typedef void (_CALLBACK_ *signal_handler)(int); |
6cdfb6e6 RS |
123 | |
124 | /* Signal handlers...SIG_DFL == 0 so this is initialized correctly. */ | |
125 | static signal_handler sig_handlers[NSIG]; | |
126 | ||
127 | /* Fake signal implementation to record the SIGCHLD handler. */ | |
177c0ea7 | 128 | signal_handler |
c519b5e1 | 129 | sys_signal (int sig, signal_handler handler) |
6cdfb6e6 RS |
130 | { |
131 | signal_handler old; | |
177c0ea7 | 132 | |
6cdfb6e6 RS |
133 | if (sig != SIGCHLD) |
134 | { | |
135 | errno = EINVAL; | |
136 | return SIG_ERR; | |
137 | } | |
138 | old = sig_handlers[sig]; | |
139 | sig_handlers[sig] = handler; | |
140 | return old; | |
141 | } | |
142 | ||
c519b5e1 GV |
143 | /* Defined in <process.h> which conflicts with the local copy */ |
144 | #define _P_NOWAIT 1 | |
145 | ||
146 | /* Child process management list. */ | |
147 | int child_proc_count = 0; | |
148 | child_process child_procs[ MAX_CHILDREN ]; | |
149 | child_process *dead_child = NULL; | |
150 | ||
151 | DWORD WINAPI reader_thread (void *arg); | |
152 | ||
6cdfb6e6 | 153 | /* Find an unused process slot. */ |
c519b5e1 | 154 | child_process * |
6cdfb6e6 RS |
155 | new_child (void) |
156 | { | |
157 | child_process *cp; | |
c519b5e1 | 158 | DWORD id; |
177c0ea7 | 159 | |
6cdfb6e6 RS |
160 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) |
161 | if (!CHILD_ACTIVE (cp)) | |
c519b5e1 GV |
162 | goto Initialise; |
163 | if (child_proc_count == MAX_CHILDREN) | |
164 | return NULL; | |
165 | cp = &child_procs[child_proc_count++]; | |
166 | ||
167 | Initialise: | |
168 | memset (cp, 0, sizeof(*cp)); | |
169 | cp->fd = -1; | |
170 | cp->pid = -1; | |
171 | cp->procinfo.hProcess = NULL; | |
172 | cp->status = STATUS_READ_ERROR; | |
173 | ||
174 | /* use manual reset event so that select() will function properly */ | |
175 | cp->char_avail = CreateEvent (NULL, TRUE, FALSE, NULL); | |
176 | if (cp->char_avail) | |
177 | { | |
178 | cp->char_consumed = CreateEvent (NULL, FALSE, FALSE, NULL); | |
179 | if (cp->char_consumed) | |
180 | { | |
181 | cp->thrd = CreateThread (NULL, 1024, reader_thread, cp, 0, &id); | |
182 | if (cp->thrd) | |
183 | return cp; | |
184 | } | |
185 | } | |
186 | delete_child (cp); | |
187 | return NULL; | |
188 | } | |
189 | ||
177c0ea7 | 190 | void |
c519b5e1 GV |
191 | delete_child (child_process *cp) |
192 | { | |
193 | int i; | |
194 | ||
195 | /* Should not be deleting a child that is still needed. */ | |
196 | for (i = 0; i < MAXDESC; i++) | |
197 | if (fd_info[i].cp == cp) | |
198 | abort (); | |
199 | ||
200 | if (!CHILD_ACTIVE (cp)) | |
201 | return; | |
202 | ||
203 | /* reap thread if necessary */ | |
204 | if (cp->thrd) | |
205 | { | |
206 | DWORD rc; | |
207 | ||
208 | if (GetExitCodeThread (cp->thrd, &rc) && rc == STILL_ACTIVE) | |
209 | { | |
210 | /* let the thread exit cleanly if possible */ | |
211 | cp->status = STATUS_READ_ERROR; | |
212 | SetEvent (cp->char_consumed); | |
213 | if (WaitForSingleObject (cp->thrd, 1000) != WAIT_OBJECT_0) | |
214 | { | |
215 | DebPrint (("delete_child.WaitForSingleObject (thread) failed " | |
216 | "with %lu for fd %ld\n", GetLastError (), cp->fd)); | |
217 | TerminateThread (cp->thrd, 0); | |
218 | } | |
219 | } | |
220 | CloseHandle (cp->thrd); | |
221 | cp->thrd = NULL; | |
222 | } | |
223 | if (cp->char_avail) | |
224 | { | |
225 | CloseHandle (cp->char_avail); | |
226 | cp->char_avail = NULL; | |
227 | } | |
228 | if (cp->char_consumed) | |
229 | { | |
230 | CloseHandle (cp->char_consumed); | |
231 | cp->char_consumed = NULL; | |
232 | } | |
233 | ||
234 | /* update child_proc_count (highest numbered slot in use plus one) */ | |
235 | if (cp == child_procs + child_proc_count - 1) | |
236 | { | |
237 | for (i = child_proc_count-1; i >= 0; i--) | |
238 | if (CHILD_ACTIVE (&child_procs[i])) | |
239 | { | |
240 | child_proc_count = i + 1; | |
241 | break; | |
242 | } | |
243 | } | |
244 | if (i < 0) | |
245 | child_proc_count = 0; | |
6cdfb6e6 RS |
246 | } |
247 | ||
248 | /* Find a child by pid. */ | |
249 | static child_process * | |
250 | find_child_pid (DWORD pid) | |
251 | { | |
252 | child_process *cp; | |
c519b5e1 | 253 | |
6cdfb6e6 RS |
254 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) |
255 | if (CHILD_ACTIVE (cp) && pid == cp->pid) | |
256 | return cp; | |
257 | return NULL; | |
258 | } | |
259 | ||
6cdfb6e6 | 260 | |
c519b5e1 GV |
261 | /* Thread proc for child process and socket reader threads. Each thread |
262 | is normally blocked until woken by select() to check for input by | |
263 | reading one char. When the read completes, char_avail is signalled | |
264 | to wake up the select emulator and the thread blocks itself again. */ | |
177c0ea7 | 265 | DWORD WINAPI |
6cdfb6e6 RS |
266 | reader_thread (void *arg) |
267 | { | |
268 | child_process *cp; | |
177c0ea7 | 269 | |
6cdfb6e6 RS |
270 | /* Our identity */ |
271 | cp = (child_process *)arg; | |
177c0ea7 | 272 | |
6cdfb6e6 | 273 | /* We have to wait for the go-ahead before we can start */ |
b2fc9f3d GV |
274 | if (cp == NULL |
275 | || WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0) | |
c519b5e1 GV |
276 | return 1; |
277 | ||
6cdfb6e6 RS |
278 | for (;;) |
279 | { | |
c519b5e1 GV |
280 | int rc; |
281 | ||
282 | rc = _sys_read_ahead (cp->fd); | |
283 | ||
284 | /* The name char_avail is a misnomer - it really just means the | |
285 | read-ahead has completed, whether successfully or not. */ | |
6cdfb6e6 RS |
286 | if (!SetEvent (cp->char_avail)) |
287 | { | |
288 | DebPrint (("reader_thread.SetEvent failed with %lu for fd %ld\n", | |
289 | GetLastError (), cp->fd)); | |
c519b5e1 GV |
290 | return 1; |
291 | } | |
292 | ||
293 | if (rc == STATUS_READ_ERROR) | |
294 | return 1; | |
177c0ea7 | 295 | |
6cdfb6e6 | 296 | /* If the read died, the child has died so let the thread die */ |
c519b5e1 | 297 | if (rc == STATUS_READ_FAILED) |
6cdfb6e6 | 298 | break; |
177c0ea7 | 299 | |
6cdfb6e6 RS |
300 | /* Wait until our input is acknowledged before reading again */ |
301 | if (WaitForSingleObject (cp->char_consumed, INFINITE) != WAIT_OBJECT_0) | |
302 | { | |
303 | DebPrint (("reader_thread.WaitForSingleObject failed with " | |
304 | "%lu for fd %ld\n", GetLastError (), cp->fd)); | |
305 | break; | |
306 | } | |
307 | } | |
308 | return 0; | |
309 | } | |
310 | ||
b2fc9f3d GV |
311 | /* To avoid Emacs changing directory, we just record here the directory |
312 | the new process should start in. This is set just before calling | |
313 | sys_spawnve, and is not generally valid at any other time. */ | |
314 | static char * process_dir; | |
315 | ||
177c0ea7 | 316 | static BOOL |
a55a5f3c | 317 | create_child (char *exe, char *cmdline, char *env, int is_gui_app, |
c519b5e1 | 318 | int * pPid, child_process *cp) |
6cdfb6e6 | 319 | { |
6cdfb6e6 RS |
320 | STARTUPINFO start; |
321 | SECURITY_ATTRIBUTES sec_attrs; | |
42c95ffb | 322 | #if 0 |
6cdfb6e6 | 323 | SECURITY_DESCRIPTOR sec_desc; |
42c95ffb | 324 | #endif |
82e7c0a9 | 325 | DWORD flags; |
b2fc9f3d | 326 | char dir[ MAXPATHLEN ]; |
177c0ea7 | 327 | |
c519b5e1 | 328 | if (cp == NULL) abort (); |
177c0ea7 | 329 | |
6cdfb6e6 RS |
330 | memset (&start, 0, sizeof (start)); |
331 | start.cb = sizeof (start); | |
177c0ea7 | 332 | |
58d4e829 | 333 | #ifdef HAVE_NTGUI |
a55a5f3c | 334 | if (NILP (Vw32_start_process_show_window) && !is_gui_app) |
0ecf7d36 RS |
335 | start.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW; |
336 | else | |
337 | start.dwFlags = STARTF_USESTDHANDLES; | |
58d4e829 GV |
338 | start.wShowWindow = SW_HIDE; |
339 | ||
340 | start.hStdInput = GetStdHandle (STD_INPUT_HANDLE); | |
341 | start.hStdOutput = GetStdHandle (STD_OUTPUT_HANDLE); | |
342 | start.hStdError = GetStdHandle (STD_ERROR_HANDLE); | |
343 | #endif /* HAVE_NTGUI */ | |
344 | ||
42c95ffb | 345 | #if 0 |
6cdfb6e6 RS |
346 | /* Explicitly specify no security */ |
347 | if (!InitializeSecurityDescriptor (&sec_desc, SECURITY_DESCRIPTOR_REVISION)) | |
c519b5e1 | 348 | goto EH_Fail; |
6cdfb6e6 | 349 | if (!SetSecurityDescriptorDacl (&sec_desc, TRUE, NULL, FALSE)) |
c519b5e1 | 350 | goto EH_Fail; |
42c95ffb | 351 | #endif |
6cdfb6e6 | 352 | sec_attrs.nLength = sizeof (sec_attrs); |
42c95ffb | 353 | sec_attrs.lpSecurityDescriptor = NULL /* &sec_desc */; |
6cdfb6e6 | 354 | sec_attrs.bInheritHandle = FALSE; |
177c0ea7 | 355 | |
b2fc9f3d GV |
356 | strcpy (dir, process_dir); |
357 | unixtodos_filename (dir); | |
82e7c0a9 AI |
358 | |
359 | flags = (!NILP (Vw32_start_process_share_console) | |
360 | ? CREATE_NEW_PROCESS_GROUP | |
361 | : CREATE_NEW_CONSOLE); | |
362 | if (NILP (Vw32_start_process_inherit_error_mode)) | |
363 | flags |= CREATE_DEFAULT_ERROR_MODE; | |
6cdfb6e6 | 364 | if (!CreateProcess (exe, cmdline, &sec_attrs, NULL, TRUE, |
82e7c0a9 | 365 | flags, env, dir, &start, &cp->procinfo)) |
c519b5e1 GV |
366 | goto EH_Fail; |
367 | ||
368 | cp->pid = (int) cp->procinfo.dwProcessId; | |
369 | ||
370 | /* Hack for Windows 95, which assigns large (ie negative) pids */ | |
371 | if (cp->pid < 0) | |
372 | cp->pid = -cp->pid; | |
373 | ||
374 | /* pid must fit in a Lisp_Int */ | |
acba5cae | 375 | cp->pid = cp->pid & INTMASK; |
c519b5e1 | 376 | |
c519b5e1 | 377 | *pPid = cp->pid; |
b2fc9f3d | 378 | |
6cdfb6e6 | 379 | return TRUE; |
b2fc9f3d | 380 | |
6cdfb6e6 | 381 | EH_Fail: |
c519b5e1 | 382 | DebPrint (("create_child.CreateProcess failed: %ld\n", GetLastError());); |
6cdfb6e6 RS |
383 | return FALSE; |
384 | } | |
385 | ||
386 | /* create_child doesn't know what emacs' file handle will be for waiting | |
387 | on output from the child, so we need to make this additional call | |
388 | to register the handle with the process | |
389 | This way the select emulator knows how to match file handles with | |
390 | entries in child_procs. */ | |
177c0ea7 | 391 | void |
6cdfb6e6 RS |
392 | register_child (int pid, int fd) |
393 | { | |
394 | child_process *cp; | |
177c0ea7 | 395 | |
6cdfb6e6 RS |
396 | cp = find_child_pid (pid); |
397 | if (cp == NULL) | |
398 | { | |
399 | DebPrint (("register_child unable to find pid %lu\n", pid)); | |
400 | return; | |
401 | } | |
177c0ea7 | 402 | |
6cdfb6e6 RS |
403 | #ifdef FULL_DEBUG |
404 | DebPrint (("register_child registered fd %d with pid %lu\n", fd, pid)); | |
405 | #endif | |
177c0ea7 | 406 | |
6cdfb6e6 | 407 | cp->fd = fd; |
6cdfb6e6 | 408 | |
c519b5e1 GV |
409 | /* thread is initially blocked until select is called; set status so |
410 | that select will release thread */ | |
411 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
412 | ||
413 | /* attach child_process to fd_info */ | |
414 | if (fd_info[fd].cp != NULL) | |
6cdfb6e6 | 415 | { |
c519b5e1 GV |
416 | DebPrint (("register_child: fd_info[%d] apparently in use!\n", fd)); |
417 | abort (); | |
6cdfb6e6 | 418 | } |
c519b5e1 GV |
419 | |
420 | fd_info[fd].cp = cp; | |
6cdfb6e6 RS |
421 | } |
422 | ||
423 | /* When a process dies its pipe will break so the reader thread will | |
424 | signal failure to the select emulator. | |
425 | The select emulator then calls this routine to clean up. | |
426 | Since the thread signaled failure we can assume it is exiting. */ | |
177c0ea7 | 427 | static void |
c519b5e1 | 428 | reap_subprocess (child_process *cp) |
6cdfb6e6 | 429 | { |
c519b5e1 | 430 | if (cp->procinfo.hProcess) |
6cdfb6e6 | 431 | { |
c519b5e1 | 432 | /* Reap the process */ |
b2fc9f3d GV |
433 | #ifdef FULL_DEBUG |
434 | /* Process should have already died before we are called. */ | |
435 | if (WaitForSingleObject (cp->procinfo.hProcess, 0) != WAIT_OBJECT_0) | |
436 | DebPrint (("reap_subprocess: child fpr fd %d has not died yet!", cp->fd)); | |
437 | #endif | |
c519b5e1 GV |
438 | CloseHandle (cp->procinfo.hProcess); |
439 | cp->procinfo.hProcess = NULL; | |
440 | CloseHandle (cp->procinfo.hThread); | |
441 | cp->procinfo.hThread = NULL; | |
6cdfb6e6 | 442 | } |
c519b5e1 GV |
443 | |
444 | /* For asynchronous children, the child_proc resources will be freed | |
445 | when the last pipe read descriptor is closed; for synchronous | |
446 | children, we must explicitly free the resources now because | |
447 | register_child has not been called. */ | |
448 | if (cp->fd == -1) | |
449 | delete_child (cp); | |
6cdfb6e6 RS |
450 | } |
451 | ||
452 | /* Wait for any of our existing child processes to die | |
453 | When it does, close its handle | |
454 | Return the pid and fill in the status if non-NULL. */ | |
22759c72 | 455 | |
177c0ea7 | 456 | int |
c519b5e1 | 457 | sys_wait (int *status) |
6cdfb6e6 RS |
458 | { |
459 | DWORD active, retval; | |
460 | int nh; | |
c519b5e1 | 461 | int pid; |
6cdfb6e6 RS |
462 | child_process *cp, *cps[MAX_CHILDREN]; |
463 | HANDLE wait_hnd[MAX_CHILDREN]; | |
177c0ea7 | 464 | |
6cdfb6e6 RS |
465 | nh = 0; |
466 | if (dead_child != NULL) | |
467 | { | |
468 | /* We want to wait for a specific child */ | |
c519b5e1 | 469 | wait_hnd[nh] = dead_child->procinfo.hProcess; |
6cdfb6e6 | 470 | cps[nh] = dead_child; |
c519b5e1 | 471 | if (!wait_hnd[nh]) abort (); |
6cdfb6e6 | 472 | nh++; |
b2fc9f3d GV |
473 | active = 0; |
474 | goto get_result; | |
6cdfb6e6 RS |
475 | } |
476 | else | |
477 | { | |
478 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) | |
c519b5e1 GV |
479 | /* some child_procs might be sockets; ignore them */ |
480 | if (CHILD_ACTIVE (cp) && cp->procinfo.hProcess) | |
6cdfb6e6 | 481 | { |
c519b5e1 | 482 | wait_hnd[nh] = cp->procinfo.hProcess; |
6cdfb6e6 RS |
483 | cps[nh] = cp; |
484 | nh++; | |
485 | } | |
486 | } | |
177c0ea7 | 487 | |
6cdfb6e6 RS |
488 | if (nh == 0) |
489 | { | |
490 | /* Nothing to wait on, so fail */ | |
491 | errno = ECHILD; | |
492 | return -1; | |
493 | } | |
b2fc9f3d GV |
494 | |
495 | do | |
496 | { | |
497 | /* Check for quit about once a second. */ | |
498 | QUIT; | |
499 | active = WaitForMultipleObjects (nh, wait_hnd, FALSE, 1000); | |
500 | } while (active == WAIT_TIMEOUT); | |
501 | ||
6cdfb6e6 RS |
502 | if (active == WAIT_FAILED) |
503 | { | |
504 | errno = EBADF; | |
505 | return -1; | |
506 | } | |
b2fc9f3d GV |
507 | else if (active >= WAIT_OBJECT_0 |
508 | && active < WAIT_OBJECT_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
509 | { |
510 | active -= WAIT_OBJECT_0; | |
511 | } | |
b2fc9f3d GV |
512 | else if (active >= WAIT_ABANDONED_0 |
513 | && active < WAIT_ABANDONED_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
514 | { |
515 | active -= WAIT_ABANDONED_0; | |
516 | } | |
b2fc9f3d GV |
517 | else |
518 | abort (); | |
519 | ||
520 | get_result: | |
6cdfb6e6 RS |
521 | if (!GetExitCodeProcess (wait_hnd[active], &retval)) |
522 | { | |
523 | DebPrint (("Wait.GetExitCodeProcess failed with %lu\n", | |
524 | GetLastError ())); | |
525 | retval = 1; | |
526 | } | |
527 | if (retval == STILL_ACTIVE) | |
528 | { | |
529 | /* Should never happen */ | |
530 | DebPrint (("Wait.WaitForMultipleObjects returned an active process\n")); | |
531 | errno = EINVAL; | |
532 | return -1; | |
533 | } | |
bc69349b RS |
534 | |
535 | /* Massage the exit code from the process to match the format expected | |
8e6208c5 | 536 | by the WIFSTOPPED et al macros in syswait.h. Only WIFSIGNALED and |
bc69349b RS |
537 | WIFEXITED are supported; WIFSTOPPED doesn't make sense under NT. */ |
538 | ||
539 | if (retval == STATUS_CONTROL_C_EXIT) | |
540 | retval = SIGINT; | |
541 | else | |
542 | retval <<= 8; | |
177c0ea7 | 543 | |
6cdfb6e6 | 544 | cp = cps[active]; |
c519b5e1 GV |
545 | pid = cp->pid; |
546 | #ifdef FULL_DEBUG | |
547 | DebPrint (("Wait signaled with process pid %d\n", cp->pid)); | |
548 | #endif | |
22759c72 | 549 | |
6cdfb6e6 RS |
550 | if (status) |
551 | { | |
22759c72 KH |
552 | *status = retval; |
553 | } | |
554 | else if (synch_process_alive) | |
555 | { | |
556 | synch_process_alive = 0; | |
22759c72 | 557 | |
3d7eead0 GV |
558 | /* Report the status of the synchronous process. */ |
559 | if (WIFEXITED (retval)) | |
560 | synch_process_retcode = WRETCODE (retval); | |
561 | else if (WIFSIGNALED (retval)) | |
562 | { | |
563 | int code = WTERMSIG (retval); | |
68c45bf0 PE |
564 | char *signame; |
565 | ||
ca9c0567 | 566 | synchronize_system_messages_locale (); |
68c45bf0 PE |
567 | signame = strsignal (code); |
568 | ||
3d7eead0 GV |
569 | if (signame == 0) |
570 | signame = "unknown"; | |
571 | ||
572 | synch_process_death = signame; | |
573 | } | |
c519b5e1 GV |
574 | |
575 | reap_subprocess (cp); | |
6cdfb6e6 | 576 | } |
b2fc9f3d GV |
577 | |
578 | reap_subprocess (cp); | |
177c0ea7 | 579 | |
c519b5e1 | 580 | return pid; |
6cdfb6e6 RS |
581 | } |
582 | ||
b2fc9f3d | 583 | void |
a55a5f3c | 584 | w32_executable_type (char * filename, int * is_dos_app, int * is_cygnus_app, int * is_gui_app) |
817abdf6 | 585 | { |
b2fc9f3d GV |
586 | file_data executable; |
587 | char * p; | |
177c0ea7 | 588 | |
b2fc9f3d GV |
589 | /* Default values in case we can't tell for sure. */ |
590 | *is_dos_app = FALSE; | |
591 | *is_cygnus_app = FALSE; | |
a55a5f3c | 592 | *is_gui_app = FALSE; |
b2fc9f3d GV |
593 | |
594 | if (!open_input_file (&executable, filename)) | |
595 | return; | |
817abdf6 | 596 | |
b2fc9f3d | 597 | p = strrchr (filename, '.'); |
177c0ea7 | 598 | |
b2fc9f3d GV |
599 | /* We can only identify DOS .com programs from the extension. */ |
600 | if (p && stricmp (p, ".com") == 0) | |
601 | *is_dos_app = TRUE; | |
602 | else if (p && (stricmp (p, ".bat") == 0 | |
603 | || stricmp (p, ".cmd") == 0)) | |
604 | { | |
605 | /* A DOS shell script - it appears that CreateProcess is happy to | |
606 | accept this (somewhat surprisingly); presumably it looks at | |
607 | COMSPEC to determine what executable to actually invoke. | |
608 | Therefore, we have to do the same here as well. */ | |
609 | /* Actually, I think it uses the program association for that | |
610 | extension, which is defined in the registry. */ | |
611 | p = egetenv ("COMSPEC"); | |
612 | if (p) | |
a55a5f3c | 613 | w32_executable_type (p, is_dos_app, is_cygnus_app, is_gui_app); |
b2fc9f3d GV |
614 | } |
615 | else | |
817abdf6 | 616 | { |
b2fc9f3d GV |
617 | /* Look for DOS .exe signature - if found, we must also check that |
618 | it isn't really a 16- or 32-bit Windows exe, since both formats | |
619 | start with a DOS program stub. Note that 16-bit Windows | |
620 | executables use the OS/2 1.x format. */ | |
817abdf6 | 621 | |
b2fc9f3d GV |
622 | IMAGE_DOS_HEADER * dos_header; |
623 | IMAGE_NT_HEADERS * nt_header; | |
624 | ||
625 | dos_header = (PIMAGE_DOS_HEADER) executable.file_base; | |
626 | if (dos_header->e_magic != IMAGE_DOS_SIGNATURE) | |
627 | goto unwind; | |
628 | ||
629 | nt_header = (PIMAGE_NT_HEADERS) ((char *) dos_header + dos_header->e_lfanew); | |
630 | ||
177c0ea7 | 631 | if ((char *) nt_header > (char *) dos_header + executable.size) |
817abdf6 | 632 | { |
b2fc9f3d GV |
633 | /* Some dos headers (pkunzip) have bogus e_lfanew fields. */ |
634 | *is_dos_app = TRUE; | |
177c0ea7 | 635 | } |
b2fc9f3d GV |
636 | else if (nt_header->Signature != IMAGE_NT_SIGNATURE |
637 | && LOWORD (nt_header->Signature) != IMAGE_OS2_SIGNATURE) | |
638 | { | |
639 | *is_dos_app = TRUE; | |
640 | } | |
641 | else if (nt_header->Signature == IMAGE_NT_SIGNATURE) | |
642 | { | |
643 | /* Look for cygwin.dll in DLL import list. */ | |
644 | IMAGE_DATA_DIRECTORY import_dir = | |
645 | nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT]; | |
646 | IMAGE_IMPORT_DESCRIPTOR * imports; | |
647 | IMAGE_SECTION_HEADER * section; | |
648 | ||
649 | section = rva_to_section (import_dir.VirtualAddress, nt_header); | |
650 | imports = RVA_TO_PTR (import_dir.VirtualAddress, section, executable); | |
651 | ||
652 | for ( ; imports->Name; imports++) | |
653 | { | |
654 | char * dllname = RVA_TO_PTR (imports->Name, section, executable); | |
655 | ||
a7325b56 AI |
656 | /* The exact name of the cygwin dll has changed with |
657 | various releases, but hopefully this will be reasonably | |
658 | future proof. */ | |
659 | if (strncmp (dllname, "cygwin", 6) == 0) | |
b2fc9f3d GV |
660 | { |
661 | *is_cygnus_app = TRUE; | |
662 | break; | |
663 | } | |
664 | } | |
a55a5f3c AI |
665 | |
666 | /* Check whether app is marked as a console or windowed (aka | |
667 | GUI) app. Accept Posix and OS2 subsytem apps as console | |
668 | apps. */ | |
669 | *is_gui_app = (nt_header->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_GUI); | |
b2fc9f3d | 670 | } |
817abdf6 | 671 | } |
177c0ea7 | 672 | |
b2fc9f3d GV |
673 | unwind: |
674 | close_file_data (&executable); | |
817abdf6 KH |
675 | } |
676 | ||
d9709fde | 677 | int |
42c95ffb | 678 | compare_env (const void *strp1, const void *strp2) |
d9709fde | 679 | { |
42c95ffb | 680 | const char *str1 = *(const char **)strp1, *str2 = *(const char **)strp2; |
d9709fde GV |
681 | |
682 | while (*str1 && *str2 && *str1 != '=' && *str2 != '=') | |
683 | { | |
11c22fff AI |
684 | /* Sort order in command.com/cmd.exe is based on uppercasing |
685 | names, so do the same here. */ | |
686 | if (toupper (*str1) > toupper (*str2)) | |
d9709fde | 687 | return 1; |
11c22fff | 688 | else if (toupper (*str1) < toupper (*str2)) |
d9709fde GV |
689 | return -1; |
690 | str1++, str2++; | |
691 | } | |
692 | ||
693 | if (*str1 == '=' && *str2 == '=') | |
694 | return 0; | |
695 | else if (*str1 == '=') | |
696 | return -1; | |
697 | else | |
698 | return 1; | |
699 | } | |
700 | ||
701 | void | |
702 | merge_and_sort_env (char **envp1, char **envp2, char **new_envp) | |
703 | { | |
704 | char **optr, **nptr; | |
705 | int num; | |
706 | ||
707 | nptr = new_envp; | |
708 | optr = envp1; | |
709 | while (*optr) | |
710 | *nptr++ = *optr++; | |
711 | num = optr - envp1; | |
712 | ||
713 | optr = envp2; | |
714 | while (*optr) | |
715 | *nptr++ = *optr++; | |
716 | num += optr - envp2; | |
717 | ||
718 | qsort (new_envp, num, sizeof (char *), compare_env); | |
719 | ||
720 | *nptr = NULL; | |
721 | } | |
6cdfb6e6 RS |
722 | |
723 | /* When a new child process is created we need to register it in our list, | |
724 | so intercept spawn requests. */ | |
177c0ea7 | 725 | int |
c519b5e1 | 726 | sys_spawnve (int mode, char *cmdname, char **argv, char **envp) |
6cdfb6e6 | 727 | { |
0a4de642 | 728 | Lisp_Object program, full; |
6cdfb6e6 | 729 | char *cmdline, *env, *parg, **targ; |
d9709fde | 730 | int arglen, numenv; |
c519b5e1 GV |
731 | int pid; |
732 | child_process *cp; | |
a55a5f3c | 733 | int is_dos_app, is_cygnus_app, is_gui_app; |
b2fc9f3d GV |
734 | int do_quoting = 0; |
735 | char escape_char; | |
d9709fde GV |
736 | /* We pass our process ID to our children by setting up an environment |
737 | variable in their environment. */ | |
738 | char ppid_env_var_buffer[64]; | |
739 | char *extra_env[] = {ppid_env_var_buffer, NULL}; | |
dbb70029 | 740 | char *sepchars = " \t"; |
d9709fde | 741 | |
c519b5e1 GV |
742 | /* We don't care about the other modes */ |
743 | if (mode != _P_NOWAIT) | |
744 | { | |
745 | errno = EINVAL; | |
746 | return -1; | |
747 | } | |
0a4de642 RS |
748 | |
749 | /* Handle executable names without an executable suffix. */ | |
750 | program = make_string (cmdname, strlen (cmdname)); | |
751 | if (NILP (Ffile_executable_p (program))) | |
752 | { | |
753 | struct gcpro gcpro1; | |
177c0ea7 | 754 | |
0a4de642 RS |
755 | full = Qnil; |
756 | GCPRO1 (program); | |
44c7a526 | 757 | openp (Vexec_path, program, Vexec_suffixes, &full, make_number (X_OK)); |
0a4de642 RS |
758 | UNGCPRO; |
759 | if (NILP (full)) | |
760 | { | |
761 | errno = EINVAL; | |
762 | return -1; | |
763 | } | |
b2fc9f3d | 764 | program = full; |
0a4de642 RS |
765 | } |
766 | ||
b2fc9f3d | 767 | /* make sure argv[0] and cmdname are both in DOS format */ |
d5db4077 | 768 | cmdname = SDATA (program); |
c519b5e1 GV |
769 | unixtodos_filename (cmdname); |
770 | argv[0] = cmdname; | |
817abdf6 | 771 | |
ef79fbba | 772 | /* Determine whether program is a 16-bit DOS executable, or a w32 |
b2fc9f3d GV |
773 | executable that is implicitly linked to the Cygnus dll (implying it |
774 | was compiled with the Cygnus GNU toolchain and hence relies on | |
775 | cygwin.dll to parse the command line - we use this to decide how to | |
a55a5f3c AI |
776 | escape quote chars in command line args that must be quoted). |
777 | ||
778 | Also determine whether it is a GUI app, so that we don't hide its | |
779 | initial window unless specifically requested. */ | |
780 | w32_executable_type (cmdname, &is_dos_app, &is_cygnus_app, &is_gui_app); | |
b2fc9f3d GV |
781 | |
782 | /* On Windows 95, if cmdname is a DOS app, we invoke a helper | |
783 | application to start it by specifying the helper app as cmdname, | |
784 | while leaving the real app name as argv[0]. */ | |
785 | if (is_dos_app) | |
817abdf6 | 786 | { |
b2fc9f3d GV |
787 | cmdname = alloca (MAXPATHLEN); |
788 | if (egetenv ("CMDPROXY")) | |
789 | strcpy (cmdname, egetenv ("CMDPROXY")); | |
790 | else | |
791 | { | |
d5db4077 | 792 | strcpy (cmdname, SDATA (Vinvocation_directory)); |
b2fc9f3d GV |
793 | strcat (cmdname, "cmdproxy.exe"); |
794 | } | |
795 | unixtodos_filename (cmdname); | |
817abdf6 | 796 | } |
177c0ea7 | 797 | |
6cdfb6e6 RS |
798 | /* we have to do some conjuring here to put argv and envp into the |
799 | form CreateProcess wants... argv needs to be a space separated/null | |
800 | terminated list of parameters, and envp is a null | |
801 | separated/double-null terminated list of parameters. | |
c519b5e1 | 802 | |
b2fc9f3d GV |
803 | Additionally, zero-length args and args containing whitespace or |
804 | quote chars need to be wrapped in double quotes - for this to work, | |
805 | embedded quotes need to be escaped as well. The aim is to ensure | |
806 | the child process reconstructs the argv array we start with | |
807 | exactly, so we treat quotes at the beginning and end of arguments | |
808 | as embedded quotes. | |
809 | ||
ef79fbba | 810 | The w32 GNU-based library from Cygnus doubles quotes to escape |
b2fc9f3d GV |
811 | them, while MSVC uses backslash for escaping. (Actually the MSVC |
812 | startup code does attempt to recognise doubled quotes and accept | |
813 | them, but gets it wrong and ends up requiring three quotes to get a | |
814 | single embedded quote!) So by default we decide whether to use | |
815 | quote or backslash as the escape character based on whether the | |
816 | binary is apparently a Cygnus compiled app. | |
817 | ||
818 | Note that using backslash to escape embedded quotes requires | |
819 | additional special handling if an embedded quote is already | |
820 | preceeded by backslash, or if an arg requiring quoting ends with | |
821 | backslash. In such cases, the run of escape characters needs to be | |
822 | doubled. For consistency, we apply this special handling as long | |
823 | as the escape character is not quote. | |
824 | ||
825 | Since we have no idea how large argv and envp are likely to be we | |
826 | figure out list lengths on the fly and allocate them. */ | |
827 | ||
828 | if (!NILP (Vw32_quote_process_args)) | |
829 | { | |
830 | do_quoting = 1; | |
831 | /* Override escape char by binding w32-quote-process-args to | |
832 | desired character, or use t for auto-selection. */ | |
833 | if (INTEGERP (Vw32_quote_process_args)) | |
834 | escape_char = XINT (Vw32_quote_process_args); | |
835 | else | |
836 | escape_char = is_cygnus_app ? '"' : '\\'; | |
837 | } | |
177c0ea7 JB |
838 | |
839 | /* Cygwin apps needs quoting a bit more often */ | |
dbb70029 GM |
840 | if (escape_char == '"') |
841 | sepchars = "\r\n\t\f '"; | |
842 | ||
6cdfb6e6 RS |
843 | /* do argv... */ |
844 | arglen = 0; | |
845 | targ = argv; | |
846 | while (*targ) | |
847 | { | |
c519b5e1 | 848 | char * p = *targ; |
b2fc9f3d GV |
849 | int need_quotes = 0; |
850 | int escape_char_run = 0; | |
c519b5e1 GV |
851 | |
852 | if (*p == 0) | |
b2fc9f3d GV |
853 | need_quotes = 1; |
854 | for ( ; *p; p++) | |
855 | { | |
dbb70029 GM |
856 | if (escape_char == '"' && *p == '\\') |
857 | /* If it's a Cygwin app, \ needs to be escaped. */ | |
858 | arglen++; | |
859 | else if (*p == '"') | |
b2fc9f3d GV |
860 | { |
861 | /* allow for embedded quotes to be escaped */ | |
862 | arglen++; | |
863 | need_quotes = 1; | |
864 | /* handle the case where the embedded quote is already escaped */ | |
865 | if (escape_char_run > 0) | |
866 | { | |
867 | /* To preserve the arg exactly, we need to double the | |
868 | preceding escape characters (plus adding one to | |
869 | escape the quote character itself). */ | |
870 | arglen += escape_char_run; | |
871 | } | |
872 | } | |
dbb70029 | 873 | else if (strchr (sepchars, *p) != NULL) |
b2fc9f3d GV |
874 | { |
875 | need_quotes = 1; | |
876 | } | |
877 | ||
878 | if (*p == escape_char && escape_char != '"') | |
879 | escape_char_run++; | |
880 | else | |
881 | escape_char_run = 0; | |
882 | } | |
883 | if (need_quotes) | |
884 | { | |
885 | arglen += 2; | |
886 | /* handle the case where the arg ends with an escape char - we | |
887 | must not let the enclosing quote be escaped. */ | |
888 | if (escape_char_run > 0) | |
889 | arglen += escape_char_run; | |
890 | } | |
6cdfb6e6 RS |
891 | arglen += strlen (*targ++) + 1; |
892 | } | |
c519b5e1 | 893 | cmdline = alloca (arglen); |
6cdfb6e6 RS |
894 | targ = argv; |
895 | parg = cmdline; | |
896 | while (*targ) | |
897 | { | |
c519b5e1 | 898 | char * p = *targ; |
b2fc9f3d | 899 | int need_quotes = 0; |
c519b5e1 GV |
900 | |
901 | if (*p == 0) | |
b2fc9f3d | 902 | need_quotes = 1; |
93fdf2f8 | 903 | |
b2fc9f3d | 904 | if (do_quoting) |
93fdf2f8 | 905 | { |
93fdf2f8 | 906 | for ( ; *p; p++) |
dbb70029 | 907 | if ((strchr (sepchars, *p) != NULL) || *p == '"') |
b2fc9f3d | 908 | need_quotes = 1; |
93fdf2f8 | 909 | } |
b2fc9f3d | 910 | if (need_quotes) |
c519b5e1 | 911 | { |
b2fc9f3d | 912 | int escape_char_run = 0; |
c519b5e1 GV |
913 | char * first; |
914 | char * last; | |
915 | ||
916 | p = *targ; | |
917 | first = p; | |
918 | last = p + strlen (p) - 1; | |
919 | *parg++ = '"'; | |
b2fc9f3d GV |
920 | #if 0 |
921 | /* This version does not escape quotes if they occur at the | |
922 | beginning or end of the arg - this could lead to incorrect | |
923 | behaviour when the arg itself represents a command line | |
924 | containing quoted args. I believe this was originally done | |
925 | as a hack to make some things work, before | |
926 | `w32-quote-process-args' was added. */ | |
c519b5e1 GV |
927 | while (*p) |
928 | { | |
929 | if (*p == '"' && p > first && p < last) | |
b2fc9f3d | 930 | *parg++ = escape_char; /* escape embedded quotes */ |
c519b5e1 GV |
931 | *parg++ = *p++; |
932 | } | |
b2fc9f3d GV |
933 | #else |
934 | for ( ; *p; p++) | |
935 | { | |
936 | if (*p == '"') | |
937 | { | |
938 | /* double preceding escape chars if any */ | |
939 | while (escape_char_run > 0) | |
940 | { | |
941 | *parg++ = escape_char; | |
942 | escape_char_run--; | |
943 | } | |
944 | /* escape all quote chars, even at beginning or end */ | |
945 | *parg++ = escape_char; | |
946 | } | |
dbb70029 GM |
947 | else if (escape_char == '"' && *p == '\\') |
948 | *parg++ = '\\'; | |
b2fc9f3d GV |
949 | *parg++ = *p; |
950 | ||
951 | if (*p == escape_char && escape_char != '"') | |
952 | escape_char_run++; | |
953 | else | |
954 | escape_char_run = 0; | |
955 | } | |
956 | /* double escape chars before enclosing quote */ | |
957 | while (escape_char_run > 0) | |
958 | { | |
959 | *parg++ = escape_char; | |
960 | escape_char_run--; | |
961 | } | |
962 | #endif | |
c519b5e1 GV |
963 | *parg++ = '"'; |
964 | } | |
965 | else | |
966 | { | |
967 | strcpy (parg, *targ); | |
968 | parg += strlen (*targ); | |
969 | } | |
6cdfb6e6 | 970 | *parg++ = ' '; |
c519b5e1 | 971 | targ++; |
6cdfb6e6 RS |
972 | } |
973 | *--parg = '\0'; | |
177c0ea7 | 974 | |
6cdfb6e6 RS |
975 | /* and envp... */ |
976 | arglen = 1; | |
977 | targ = envp; | |
d9709fde | 978 | numenv = 1; /* for end null */ |
6cdfb6e6 RS |
979 | while (*targ) |
980 | { | |
981 | arglen += strlen (*targ++) + 1; | |
d9709fde | 982 | numenv++; |
6cdfb6e6 | 983 | } |
d9709fde | 984 | /* extra env vars... */ |
177c0ea7 | 985 | sprintf (ppid_env_var_buffer, "EM_PARENT_PROCESS_ID=%d", |
6cdfb6e6 RS |
986 | GetCurrentProcessId ()); |
987 | arglen += strlen (ppid_env_var_buffer) + 1; | |
d9709fde | 988 | numenv++; |
6cdfb6e6 | 989 | |
d9709fde GV |
990 | /* merge env passed in and extra env into one, and sort it. */ |
991 | targ = (char **) alloca (numenv * sizeof (char *)); | |
992 | merge_and_sort_env (envp, extra_env, targ); | |
993 | ||
994 | /* concatenate env entries. */ | |
c519b5e1 | 995 | env = alloca (arglen); |
6cdfb6e6 RS |
996 | parg = env; |
997 | while (*targ) | |
998 | { | |
999 | strcpy (parg, *targ); | |
1000 | parg += strlen (*targ++); | |
1001 | *parg++ = '\0'; | |
1002 | } | |
6cdfb6e6 RS |
1003 | *parg++ = '\0'; |
1004 | *parg = '\0'; | |
c519b5e1 GV |
1005 | |
1006 | cp = new_child (); | |
1007 | if (cp == NULL) | |
1008 | { | |
1009 | errno = EAGAIN; | |
1010 | return -1; | |
1011 | } | |
177c0ea7 | 1012 | |
6cdfb6e6 | 1013 | /* Now create the process. */ |
a55a5f3c | 1014 | if (!create_child (cmdname, cmdline, env, is_gui_app, &pid, cp)) |
6cdfb6e6 | 1015 | { |
c519b5e1 | 1016 | delete_child (cp); |
6cdfb6e6 | 1017 | errno = ENOEXEC; |
c519b5e1 | 1018 | return -1; |
6cdfb6e6 | 1019 | } |
177c0ea7 | 1020 | |
c519b5e1 | 1021 | return pid; |
6cdfb6e6 RS |
1022 | } |
1023 | ||
1024 | /* Emulate the select call | |
1025 | Wait for available input on any of the given rfds, or timeout if | |
1026 | a timeout is given and no input is detected | |
b2fc9f3d GV |
1027 | wfds and efds are not supported and must be NULL. |
1028 | ||
1029 | For simplicity, we detect the death of child processes here and | |
1030 | synchronously call the SIGCHLD handler. Since it is possible for | |
1031 | children to be created without a corresponding pipe handle from which | |
1032 | to read output, we wait separately on the process handles as well as | |
1033 | the char_avail events for each process pipe. We only call | |
86143765 RS |
1034 | wait/reap_process when the process actually terminates. |
1035 | ||
1036 | To reduce the number of places in which Emacs can be hung such that | |
1037 | C-g is not able to interrupt it, we always wait on interrupt_handle | |
1038 | (which is signalled by the input thread when C-g is detected). If we | |
1039 | detect that we were woken up by C-g, we return -1 with errno set to | |
1040 | EINTR as on Unix. */ | |
6cdfb6e6 RS |
1041 | |
1042 | /* From ntterm.c */ | |
1043 | extern HANDLE keyboard_handle; | |
86143765 RS |
1044 | |
1045 | /* From w32xfns.c */ | |
1046 | extern HANDLE interrupt_handle; | |
1047 | ||
6cdfb6e6 RS |
1048 | /* From process.c */ |
1049 | extern int proc_buffered_char[]; | |
1050 | ||
177c0ea7 | 1051 | int |
22759c72 KH |
1052 | sys_select (int nfds, SELECT_TYPE *rfds, SELECT_TYPE *wfds, SELECT_TYPE *efds, |
1053 | EMACS_TIME *timeout) | |
6cdfb6e6 RS |
1054 | { |
1055 | SELECT_TYPE orfds; | |
b2fc9f3d GV |
1056 | DWORD timeout_ms, start_time; |
1057 | int i, nh, nc, nr; | |
6cdfb6e6 | 1058 | DWORD active; |
b2fc9f3d GV |
1059 | child_process *cp, *cps[MAX_CHILDREN]; |
1060 | HANDLE wait_hnd[MAXDESC + MAX_CHILDREN]; | |
c519b5e1 | 1061 | int fdindex[MAXDESC]; /* mapping from wait handles back to descriptors */ |
177c0ea7 | 1062 | |
b2fc9f3d GV |
1063 | timeout_ms = timeout ? (timeout->tv_sec * 1000 + timeout->tv_usec / 1000) : INFINITE; |
1064 | ||
6cdfb6e6 | 1065 | /* If the descriptor sets are NULL but timeout isn't, then just Sleep. */ |
177c0ea7 | 1066 | if (rfds == NULL && wfds == NULL && efds == NULL && timeout != NULL) |
6cdfb6e6 | 1067 | { |
b2fc9f3d | 1068 | Sleep (timeout_ms); |
6cdfb6e6 RS |
1069 | return 0; |
1070 | } | |
1071 | ||
1072 | /* Otherwise, we only handle rfds, so fail otherwise. */ | |
1073 | if (rfds == NULL || wfds != NULL || efds != NULL) | |
1074 | { | |
1075 | errno = EINVAL; | |
1076 | return -1; | |
1077 | } | |
177c0ea7 | 1078 | |
6cdfb6e6 RS |
1079 | orfds = *rfds; |
1080 | FD_ZERO (rfds); | |
1081 | nr = 0; | |
86143765 RS |
1082 | |
1083 | /* Always wait on interrupt_handle, to detect C-g (quit). */ | |
1084 | wait_hnd[0] = interrupt_handle; | |
1085 | fdindex[0] = -1; | |
177c0ea7 | 1086 | |
b2fc9f3d | 1087 | /* Build a list of pipe handles to wait on. */ |
86143765 | 1088 | nh = 1; |
6cdfb6e6 RS |
1089 | for (i = 0; i < nfds; i++) |
1090 | if (FD_ISSET (i, &orfds)) | |
1091 | { | |
1092 | if (i == 0) | |
1093 | { | |
c519b5e1 GV |
1094 | if (keyboard_handle) |
1095 | { | |
1096 | /* Handle stdin specially */ | |
1097 | wait_hnd[nh] = keyboard_handle; | |
1098 | fdindex[nh] = i; | |
1099 | nh++; | |
1100 | } | |
6cdfb6e6 RS |
1101 | |
1102 | /* Check for any emacs-generated input in the queue since | |
1103 | it won't be detected in the wait */ | |
1104 | if (detect_input_pending ()) | |
1105 | { | |
1106 | FD_SET (i, rfds); | |
c519b5e1 | 1107 | return 1; |
6cdfb6e6 RS |
1108 | } |
1109 | } | |
1110 | else | |
1111 | { | |
c519b5e1 GV |
1112 | /* Child process and socket input */ |
1113 | cp = fd_info[i].cp; | |
6cdfb6e6 RS |
1114 | if (cp) |
1115 | { | |
c519b5e1 GV |
1116 | int current_status = cp->status; |
1117 | ||
1118 | if (current_status == STATUS_READ_ACKNOWLEDGED) | |
1119 | { | |
1120 | /* Tell reader thread which file handle to use. */ | |
1121 | cp->fd = i; | |
1122 | /* Wake up the reader thread for this process */ | |
1123 | cp->status = STATUS_READ_READY; | |
1124 | if (!SetEvent (cp->char_consumed)) | |
1125 | DebPrint (("nt_select.SetEvent failed with " | |
1126 | "%lu for fd %ld\n", GetLastError (), i)); | |
1127 | } | |
1128 | ||
1129 | #ifdef CHECK_INTERLOCK | |
1130 | /* slightly crude cross-checking of interlock between threads */ | |
1131 | ||
1132 | current_status = cp->status; | |
1133 | if (WaitForSingleObject (cp->char_avail, 0) == WAIT_OBJECT_0) | |
1134 | { | |
1135 | /* char_avail has been signalled, so status (which may | |
1136 | have changed) should indicate read has completed | |
1137 | but has not been acknowledged. */ | |
1138 | current_status = cp->status; | |
b2fc9f3d GV |
1139 | if (current_status != STATUS_READ_SUCCEEDED |
1140 | && current_status != STATUS_READ_FAILED) | |
c519b5e1 GV |
1141 | DebPrint (("char_avail set, but read not completed: status %d\n", |
1142 | current_status)); | |
1143 | } | |
1144 | else | |
1145 | { | |
1146 | /* char_avail has not been signalled, so status should | |
1147 | indicate that read is in progress; small possibility | |
1148 | that read has completed but event wasn't yet signalled | |
1149 | when we tested it (because a context switch occurred | |
1150 | or if running on separate CPUs). */ | |
b2fc9f3d GV |
1151 | if (current_status != STATUS_READ_READY |
1152 | && current_status != STATUS_READ_IN_PROGRESS | |
1153 | && current_status != STATUS_READ_SUCCEEDED | |
1154 | && current_status != STATUS_READ_FAILED) | |
c519b5e1 GV |
1155 | DebPrint (("char_avail reset, but read status is bad: %d\n", |
1156 | current_status)); | |
1157 | } | |
1158 | #endif | |
1159 | wait_hnd[nh] = cp->char_avail; | |
1160 | fdindex[nh] = i; | |
1161 | if (!wait_hnd[nh]) abort (); | |
1162 | nh++; | |
6cdfb6e6 RS |
1163 | #ifdef FULL_DEBUG |
1164 | DebPrint (("select waiting on child %d fd %d\n", | |
1165 | cp-child_procs, i)); | |
1166 | #endif | |
6cdfb6e6 RS |
1167 | } |
1168 | else | |
1169 | { | |
c519b5e1 | 1170 | /* Unable to find something to wait on for this fd, skip */ |
ef79fbba GV |
1171 | |
1172 | /* Note that this is not a fatal error, and can in fact | |
1173 | happen in unusual circumstances. Specifically, if | |
1174 | sys_spawnve fails, eg. because the program doesn't | |
1175 | exist, and debug-on-error is t so Fsignal invokes a | |
1176 | nested input loop, then the process output pipe is | |
1177 | still included in input_wait_mask with no child_proc | |
1178 | associated with it. (It is removed when the debugger | |
1179 | exits the nested input loop and the error is thrown.) */ | |
1180 | ||
c519b5e1 | 1181 | DebPrint (("sys_select: fd %ld is invalid! ignoring\n", i)); |
6cdfb6e6 RS |
1182 | } |
1183 | } | |
1184 | } | |
b2fc9f3d GV |
1185 | |
1186 | count_children: | |
1187 | /* Add handles of child processes. */ | |
1188 | nc = 0; | |
1189 | for (cp = child_procs+(child_proc_count-1); cp >= child_procs; cp--) | |
ef79fbba GV |
1190 | /* Some child_procs might be sockets; ignore them. Also some |
1191 | children may have died already, but we haven't finished reading | |
1192 | the process output; ignore them too. */ | |
1193 | if (CHILD_ACTIVE (cp) && cp->procinfo.hProcess | |
1194 | && (cp->fd < 0 | |
1195 | || (fd_info[cp->fd].flags & FILE_SEND_SIGCHLD) == 0 | |
1196 | || (fd_info[cp->fd].flags & FILE_AT_EOF) != 0) | |
1197 | ) | |
b2fc9f3d GV |
1198 | { |
1199 | wait_hnd[nh + nc] = cp->procinfo.hProcess; | |
1200 | cps[nc] = cp; | |
1201 | nc++; | |
1202 | } | |
177c0ea7 | 1203 | |
6cdfb6e6 | 1204 | /* Nothing to look for, so we didn't find anything */ |
177c0ea7 | 1205 | if (nh + nc == 0) |
6cdfb6e6 | 1206 | { |
22759c72 | 1207 | if (timeout) |
b2fc9f3d | 1208 | Sleep (timeout_ms); |
6cdfb6e6 RS |
1209 | return 0; |
1210 | } | |
177c0ea7 | 1211 | |
b2fc9f3d | 1212 | start_time = GetTickCount (); |
8b031dcc AI |
1213 | |
1214 | /* Wait for input or child death to be signalled. If user input is | |
1215 | allowed, then also accept window messages. */ | |
1216 | if (FD_ISSET (0, &orfds)) | |
1217 | active = MsgWaitForMultipleObjects (nh + nc, wait_hnd, FALSE, timeout_ms, | |
1218 | QS_ALLINPUT); | |
1219 | else | |
1220 | active = WaitForMultipleObjects (nh + nc, wait_hnd, FALSE, timeout_ms); | |
c519b5e1 | 1221 | |
6cdfb6e6 RS |
1222 | if (active == WAIT_FAILED) |
1223 | { | |
1224 | DebPrint (("select.WaitForMultipleObjects (%d, %lu) failed with %lu\n", | |
b2fc9f3d | 1225 | nh + nc, timeout_ms, GetLastError ())); |
d64b707c | 1226 | /* don't return EBADF - this causes wait_reading_process_output to |
c519b5e1 GV |
1227 | abort; WAIT_FAILED is returned when single-stepping under |
1228 | Windows 95 after switching thread focus in debugger, and | |
1229 | possibly at other times. */ | |
1230 | errno = EINTR; | |
6cdfb6e6 RS |
1231 | return -1; |
1232 | } | |
1233 | else if (active == WAIT_TIMEOUT) | |
1234 | { | |
1235 | return 0; | |
1236 | } | |
b2fc9f3d GV |
1237 | else if (active >= WAIT_OBJECT_0 |
1238 | && active < WAIT_OBJECT_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
1239 | { |
1240 | active -= WAIT_OBJECT_0; | |
1241 | } | |
b2fc9f3d GV |
1242 | else if (active >= WAIT_ABANDONED_0 |
1243 | && active < WAIT_ABANDONED_0+MAXIMUM_WAIT_OBJECTS) | |
6cdfb6e6 RS |
1244 | { |
1245 | active -= WAIT_ABANDONED_0; | |
1246 | } | |
b2fc9f3d GV |
1247 | else |
1248 | abort (); | |
6cdfb6e6 | 1249 | |
c519b5e1 GV |
1250 | /* Loop over all handles after active (now officially documented as |
1251 | being the first signalled handle in the array). We do this to | |
1252 | ensure fairness, so that all channels with data available will be | |
1253 | processed - otherwise higher numbered channels could be starved. */ | |
1254 | do | |
6cdfb6e6 | 1255 | { |
8b031dcc AI |
1256 | if (active == nh + nc) |
1257 | { | |
1258 | /* There are messages in the lisp thread's queue; we must | |
1259 | drain the queue now to ensure they are processed promptly, | |
1260 | because if we don't do so, we will not be woken again until | |
1261 | further messages arrive. | |
1262 | ||
1263 | NB. If ever we allow window message procedures to callback | |
1264 | into lisp, we will need to ensure messages are dispatched | |
1265 | at a safe time for lisp code to be run (*), and we may also | |
1266 | want to provide some hooks in the dispatch loop to cater | |
1267 | for modeless dialogs created by lisp (ie. to register | |
1268 | window handles to pass to IsDialogMessage). | |
1269 | ||
1270 | (*) Note that MsgWaitForMultipleObjects above is an | |
1271 | internal dispatch point for messages that are sent to | |
1272 | windows created by this thread. */ | |
1273 | drain_message_queue (); | |
1274 | } | |
1275 | else if (active >= nh) | |
b2fc9f3d GV |
1276 | { |
1277 | cp = cps[active - nh]; | |
ef79fbba GV |
1278 | |
1279 | /* We cannot always signal SIGCHLD immediately; if we have not | |
1280 | finished reading the process output, we must delay sending | |
1281 | SIGCHLD until we do. */ | |
1282 | ||
1283 | if (cp->fd >= 0 && (fd_info[cp->fd].flags & FILE_AT_EOF) == 0) | |
1284 | fd_info[cp->fd].flags |= FILE_SEND_SIGCHLD; | |
b2fc9f3d | 1285 | /* SIG_DFL for SIGCHLD is ignore */ |
ef79fbba GV |
1286 | else if (sig_handlers[SIGCHLD] != SIG_DFL && |
1287 | sig_handlers[SIGCHLD] != SIG_IGN) | |
b2fc9f3d GV |
1288 | { |
1289 | #ifdef FULL_DEBUG | |
1290 | DebPrint (("select calling SIGCHLD handler for pid %d\n", | |
1291 | cp->pid)); | |
1292 | #endif | |
1293 | dead_child = cp; | |
1294 | sig_handlers[SIGCHLD] (SIGCHLD); | |
1295 | dead_child = NULL; | |
1296 | } | |
1297 | } | |
86143765 RS |
1298 | else if (fdindex[active] == -1) |
1299 | { | |
1300 | /* Quit (C-g) was detected. */ | |
1301 | errno = EINTR; | |
1302 | return -1; | |
1303 | } | |
b2fc9f3d | 1304 | else if (fdindex[active] == 0) |
c519b5e1 GV |
1305 | { |
1306 | /* Keyboard input available */ | |
1307 | FD_SET (0, rfds); | |
6cdfb6e6 | 1308 | nr++; |
c519b5e1 | 1309 | } |
6cdfb6e6 | 1310 | else |
c519b5e1 | 1311 | { |
b2fc9f3d GV |
1312 | /* must be a socket or pipe - read ahead should have |
1313 | completed, either succeeding or failing. */ | |
c519b5e1 GV |
1314 | FD_SET (fdindex[active], rfds); |
1315 | nr++; | |
c519b5e1 GV |
1316 | } |
1317 | ||
b2fc9f3d GV |
1318 | /* Even though wait_reading_process_output only reads from at most |
1319 | one channel, we must process all channels here so that we reap | |
1320 | all children that have died. */ | |
1321 | while (++active < nh + nc) | |
c519b5e1 GV |
1322 | if (WaitForSingleObject (wait_hnd[active], 0) == WAIT_OBJECT_0) |
1323 | break; | |
b2fc9f3d GV |
1324 | } while (active < nh + nc); |
1325 | ||
1326 | /* If no input has arrived and timeout hasn't expired, wait again. */ | |
1327 | if (nr == 0) | |
1328 | { | |
1329 | DWORD elapsed = GetTickCount () - start_time; | |
1330 | ||
1331 | if (timeout_ms > elapsed) /* INFINITE is MAX_UINT */ | |
1332 | { | |
1333 | if (timeout_ms != INFINITE) | |
1334 | timeout_ms -= elapsed; | |
1335 | goto count_children; | |
1336 | } | |
1337 | } | |
c519b5e1 | 1338 | |
6cdfb6e6 RS |
1339 | return nr; |
1340 | } | |
1341 | ||
c519b5e1 | 1342 | /* Substitute for certain kill () operations */ |
b2fc9f3d GV |
1343 | |
1344 | static BOOL CALLBACK | |
42c95ffb | 1345 | find_child_console (HWND hwnd, LPARAM arg) |
b2fc9f3d | 1346 | { |
42c95ffb | 1347 | child_process * cp = (child_process *) arg; |
b2fc9f3d GV |
1348 | DWORD thread_id; |
1349 | DWORD process_id; | |
1350 | ||
1351 | thread_id = GetWindowThreadProcessId (hwnd, &process_id); | |
1352 | if (process_id == cp->procinfo.dwProcessId) | |
1353 | { | |
1354 | char window_class[32]; | |
1355 | ||
1356 | GetClassName (hwnd, window_class, sizeof (window_class)); | |
1357 | if (strcmp (window_class, | |
1358 | (os_subtype == OS_WIN95) | |
1359 | ? "tty" | |
1360 | : "ConsoleWindowClass") == 0) | |
1361 | { | |
1362 | cp->hwnd = hwnd; | |
1363 | return FALSE; | |
1364 | } | |
1365 | } | |
1366 | /* keep looking */ | |
1367 | return TRUE; | |
1368 | } | |
1369 | ||
177c0ea7 | 1370 | int |
c519b5e1 | 1371 | sys_kill (int pid, int sig) |
6cdfb6e6 RS |
1372 | { |
1373 | child_process *cp; | |
c519b5e1 GV |
1374 | HANDLE proc_hand; |
1375 | int need_to_free = 0; | |
1376 | int rc = 0; | |
177c0ea7 | 1377 | |
6cdfb6e6 RS |
1378 | /* Only handle signals that will result in the process dying */ |
1379 | if (sig != SIGINT && sig != SIGKILL && sig != SIGQUIT && sig != SIGHUP) | |
1380 | { | |
1381 | errno = EINVAL; | |
1382 | return -1; | |
1383 | } | |
c519b5e1 | 1384 | |
6cdfb6e6 RS |
1385 | cp = find_child_pid (pid); |
1386 | if (cp == NULL) | |
1387 | { | |
c519b5e1 GV |
1388 | proc_hand = OpenProcess (PROCESS_TERMINATE, 0, pid); |
1389 | if (proc_hand == NULL) | |
1390 | { | |
1391 | errno = EPERM; | |
1392 | return -1; | |
1393 | } | |
1394 | need_to_free = 1; | |
1395 | } | |
1396 | else | |
1397 | { | |
1398 | proc_hand = cp->procinfo.hProcess; | |
1399 | pid = cp->procinfo.dwProcessId; | |
b2fc9f3d GV |
1400 | |
1401 | /* Try to locate console window for process. */ | |
1402 | EnumWindows (find_child_console, (LPARAM) cp); | |
6cdfb6e6 | 1403 | } |
177c0ea7 | 1404 | |
a55a5f3c | 1405 | if (sig == SIGINT || sig == SIGQUIT) |
6cdfb6e6 | 1406 | { |
b2fc9f3d GV |
1407 | if (NILP (Vw32_start_process_share_console) && cp && cp->hwnd) |
1408 | { | |
1409 | BYTE control_scan_code = (BYTE) MapVirtualKey (VK_CONTROL, 0); | |
a55a5f3c AI |
1410 | /* Fake Ctrl-C for SIGINT, and Ctrl-Break for SIGQUIT. */ |
1411 | BYTE vk_break_code = (sig == SIGINT) ? 'C' : VK_CANCEL; | |
b2fc9f3d GV |
1412 | BYTE break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0); |
1413 | HWND foreground_window; | |
1414 | ||
1415 | if (break_scan_code == 0) | |
1416 | { | |
a55a5f3c | 1417 | /* Fake Ctrl-C for SIGQUIT if we can't manage Ctrl-Break. */ |
b2fc9f3d GV |
1418 | vk_break_code = 'C'; |
1419 | break_scan_code = (BYTE) MapVirtualKey (vk_break_code, 0); | |
1420 | } | |
1421 | ||
1422 | foreground_window = GetForegroundWindow (); | |
f446016f | 1423 | if (foreground_window) |
b2fc9f3d | 1424 | { |
f446016f AI |
1425 | /* NT 5.0, and apparently also Windows 98, will not allow |
1426 | a Window to be set to foreground directly without the | |
1427 | user's involvement. The workaround is to attach | |
1428 | ourselves to the thread that owns the foreground | |
1429 | window, since that is the only thread that can set the | |
1430 | foreground window. */ | |
1431 | DWORD foreground_thread, child_thread; | |
1432 | foreground_thread = | |
1433 | GetWindowThreadProcessId (foreground_window, NULL); | |
1434 | if (foreground_thread == GetCurrentThreadId () | |
1435 | || !AttachThreadInput (GetCurrentThreadId (), | |
1436 | foreground_thread, TRUE)) | |
1437 | foreground_thread = 0; | |
1438 | ||
1439 | child_thread = GetWindowThreadProcessId (cp->hwnd, NULL); | |
1440 | if (child_thread == GetCurrentThreadId () | |
1441 | || !AttachThreadInput (GetCurrentThreadId (), | |
1442 | child_thread, TRUE)) | |
1443 | child_thread = 0; | |
1444 | ||
1445 | /* Set the foreground window to the child. */ | |
1446 | if (SetForegroundWindow (cp->hwnd)) | |
1447 | { | |
1448 | /* Generate keystrokes as if user had typed Ctrl-Break or | |
1449 | Ctrl-C. */ | |
1450 | keybd_event (VK_CONTROL, control_scan_code, 0, 0); | |
1451 | keybd_event (vk_break_code, break_scan_code, | |
1452 | (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY), 0); | |
1453 | keybd_event (vk_break_code, break_scan_code, | |
1454 | (vk_break_code == 'C' ? 0 : KEYEVENTF_EXTENDEDKEY) | |
1455 | | KEYEVENTF_KEYUP, 0); | |
1456 | keybd_event (VK_CONTROL, control_scan_code, | |
1457 | KEYEVENTF_KEYUP, 0); | |
1458 | ||
1459 | /* Sleep for a bit to give time for Emacs frame to respond | |
1460 | to focus change events (if Emacs was active app). */ | |
1461 | Sleep (100); | |
1462 | ||
1463 | SetForegroundWindow (foreground_window); | |
1464 | } | |
1465 | /* Detach from the foreground and child threads now that | |
1466 | the foreground switching is over. */ | |
1467 | if (foreground_thread) | |
1468 | AttachThreadInput (GetCurrentThreadId (), | |
1469 | foreground_thread, FALSE); | |
1470 | if (child_thread) | |
1471 | AttachThreadInput (GetCurrentThreadId (), | |
1472 | child_thread, FALSE); | |
1473 | } | |
1474 | } | |
c519b5e1 | 1475 | /* Ctrl-Break is NT equivalent of SIGINT. */ |
b2fc9f3d | 1476 | else if (!GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, pid)) |
6cdfb6e6 | 1477 | { |
c519b5e1 | 1478 | DebPrint (("sys_kill.GenerateConsoleCtrlEvent return %d " |
6cdfb6e6 RS |
1479 | "for pid %lu\n", GetLastError (), pid)); |
1480 | errno = EINVAL; | |
c519b5e1 | 1481 | rc = -1; |
80874ef7 | 1482 | } |
6cdfb6e6 RS |
1483 | } |
1484 | else | |
1485 | { | |
b2fc9f3d GV |
1486 | if (NILP (Vw32_start_process_share_console) && cp && cp->hwnd) |
1487 | { | |
1488 | #if 1 | |
1489 | if (os_subtype == OS_WIN95) | |
1490 | { | |
1491 | /* | |
1492 | Another possibility is to try terminating the VDM out-right by | |
1493 | calling the Shell VxD (id 0x17) V86 interface, function #4 | |
1494 | "SHELL_Destroy_VM", ie. | |
1495 | ||
1496 | mov edx,4 | |
1497 | mov ebx,vm_handle | |
1498 | call shellapi | |
1499 | ||
1500 | First need to determine the current VM handle, and then arrange for | |
1501 | the shellapi call to be made from the system vm (by using | |
1502 | Switch_VM_and_callback). | |
1503 | ||
1504 | Could try to invoke DestroyVM through CallVxD. | |
1505 | ||
1506 | */ | |
ef79fbba GV |
1507 | #if 0 |
1508 | /* On Win95, posting WM_QUIT causes the 16-bit subsystem | |
1509 | to hang when cmdproxy is used in conjunction with | |
1510 | command.com for an interactive shell. Posting | |
1511 | WM_CLOSE pops up a dialog that, when Yes is selected, | |
1512 | does the same thing. TerminateProcess is also less | |
1513 | than ideal in that subprocesses tend to stick around | |
1514 | until the machine is shutdown, but at least it | |
1515 | doesn't freeze the 16-bit subsystem. */ | |
b2fc9f3d | 1516 | PostMessage (cp->hwnd, WM_QUIT, 0xff, 0); |
ef79fbba GV |
1517 | #endif |
1518 | if (!TerminateProcess (proc_hand, 0xff)) | |
1519 | { | |
1520 | DebPrint (("sys_kill.TerminateProcess returned %d " | |
1521 | "for pid %lu\n", GetLastError (), pid)); | |
1522 | errno = EINVAL; | |
1523 | rc = -1; | |
1524 | } | |
b2fc9f3d GV |
1525 | } |
1526 | else | |
1527 | #endif | |
1528 | PostMessage (cp->hwnd, WM_CLOSE, 0, 0); | |
1529 | } | |
fbd6baed | 1530 | /* Kill the process. On W32 this doesn't kill child processes |
8eae7766 | 1531 | so it doesn't work very well for shells which is why it's not |
b2fc9f3d GV |
1532 | used in every case. */ |
1533 | else if (!TerminateProcess (proc_hand, 0xff)) | |
6cdfb6e6 | 1534 | { |
c519b5e1 | 1535 | DebPrint (("sys_kill.TerminateProcess returned %d " |
6cdfb6e6 RS |
1536 | "for pid %lu\n", GetLastError (), pid)); |
1537 | errno = EINVAL; | |
c519b5e1 | 1538 | rc = -1; |
6cdfb6e6 RS |
1539 | } |
1540 | } | |
c519b5e1 GV |
1541 | |
1542 | if (need_to_free) | |
1543 | CloseHandle (proc_hand); | |
1544 | ||
1545 | return rc; | |
6cdfb6e6 RS |
1546 | } |
1547 | ||
09522567 | 1548 | /* extern int report_file_error (char *, Lisp_Object); */ |
c519b5e1 GV |
1549 | |
1550 | /* The following two routines are used to manipulate stdin, stdout, and | |
1551 | stderr of our child processes. | |
1552 | ||
1553 | Assuming that in, out, and err are *not* inheritable, we make them | |
1554 | stdin, stdout, and stderr of the child as follows: | |
1555 | ||
1556 | - Save the parent's current standard handles. | |
1557 | - Set the std handles to inheritable duplicates of the ones being passed in. | |
1558 | (Note that _get_osfhandle() is an io.h procedure that retrieves the | |
1559 | NT file handle for a crt file descriptor.) | |
1560 | - Spawn the child, which inherits in, out, and err as stdin, | |
1561 | stdout, and stderr. (see Spawnve) | |
1562 | - Close the std handles passed to the child. | |
1563 | - Reset the parent's standard handles to the saved handles. | |
1564 | (see reset_standard_handles) | |
1565 | We assume that the caller closes in, out, and err after calling us. */ | |
1566 | ||
1567 | void | |
1568 | prepare_standard_handles (int in, int out, int err, HANDLE handles[3]) | |
6cdfb6e6 | 1569 | { |
c519b5e1 GV |
1570 | HANDLE parent; |
1571 | HANDLE newstdin, newstdout, newstderr; | |
1572 | ||
1573 | parent = GetCurrentProcess (); | |
1574 | ||
1575 | handles[0] = GetStdHandle (STD_INPUT_HANDLE); | |
1576 | handles[1] = GetStdHandle (STD_OUTPUT_HANDLE); | |
1577 | handles[2] = GetStdHandle (STD_ERROR_HANDLE); | |
1578 | ||
1579 | /* make inheritable copies of the new handles */ | |
177c0ea7 | 1580 | if (!DuplicateHandle (parent, |
c519b5e1 GV |
1581 | (HANDLE) _get_osfhandle (in), |
1582 | parent, | |
177c0ea7 JB |
1583 | &newstdin, |
1584 | 0, | |
1585 | TRUE, | |
c519b5e1 GV |
1586 | DUPLICATE_SAME_ACCESS)) |
1587 | report_file_error ("Duplicating input handle for child", Qnil); | |
177c0ea7 | 1588 | |
c519b5e1 GV |
1589 | if (!DuplicateHandle (parent, |
1590 | (HANDLE) _get_osfhandle (out), | |
1591 | parent, | |
1592 | &newstdout, | |
1593 | 0, | |
1594 | TRUE, | |
1595 | DUPLICATE_SAME_ACCESS)) | |
1596 | report_file_error ("Duplicating output handle for child", Qnil); | |
177c0ea7 | 1597 | |
c519b5e1 GV |
1598 | if (!DuplicateHandle (parent, |
1599 | (HANDLE) _get_osfhandle (err), | |
1600 | parent, | |
1601 | &newstderr, | |
1602 | 0, | |
1603 | TRUE, | |
1604 | DUPLICATE_SAME_ACCESS)) | |
1605 | report_file_error ("Duplicating error handle for child", Qnil); | |
1606 | ||
1607 | /* and store them as our std handles */ | |
1608 | if (!SetStdHandle (STD_INPUT_HANDLE, newstdin)) | |
1609 | report_file_error ("Changing stdin handle", Qnil); | |
177c0ea7 | 1610 | |
c519b5e1 GV |
1611 | if (!SetStdHandle (STD_OUTPUT_HANDLE, newstdout)) |
1612 | report_file_error ("Changing stdout handle", Qnil); | |
1613 | ||
1614 | if (!SetStdHandle (STD_ERROR_HANDLE, newstderr)) | |
1615 | report_file_error ("Changing stderr handle", Qnil); | |
1616 | } | |
1617 | ||
1618 | void | |
1619 | reset_standard_handles (int in, int out, int err, HANDLE handles[3]) | |
1620 | { | |
1621 | /* close the duplicated handles passed to the child */ | |
1622 | CloseHandle (GetStdHandle (STD_INPUT_HANDLE)); | |
1623 | CloseHandle (GetStdHandle (STD_OUTPUT_HANDLE)); | |
1624 | CloseHandle (GetStdHandle (STD_ERROR_HANDLE)); | |
1625 | ||
1626 | /* now restore parent's saved std handles */ | |
1627 | SetStdHandle (STD_INPUT_HANDLE, handles[0]); | |
1628 | SetStdHandle (STD_OUTPUT_HANDLE, handles[1]); | |
1629 | SetStdHandle (STD_ERROR_HANDLE, handles[2]); | |
6cdfb6e6 | 1630 | } |
c519b5e1 | 1631 | |
b2fc9f3d GV |
1632 | void |
1633 | set_process_dir (char * dir) | |
1634 | { | |
1635 | process_dir = dir; | |
1636 | } | |
1637 | ||
a11e68d0 RS |
1638 | #ifdef HAVE_SOCKETS |
1639 | ||
1640 | /* To avoid problems with winsock implementations that work over dial-up | |
1641 | connections causing or requiring a connection to exist while Emacs is | |
1642 | running, Emacs no longer automatically loads winsock on startup if it | |
1643 | is present. Instead, it will be loaded when open-network-stream is | |
1644 | first called. | |
1645 | ||
1646 | To allow full control over when winsock is loaded, we provide these | |
1647 | two functions to dynamically load and unload winsock. This allows | |
1648 | dial-up users to only be connected when they actually need to use | |
1649 | socket services. */ | |
1650 | ||
1651 | /* From nt.c */ | |
1652 | extern HANDLE winsock_lib; | |
1653 | extern BOOL term_winsock (void); | |
1654 | extern BOOL init_winsock (int load_now); | |
1655 | ||
1656 | extern Lisp_Object Vsystem_name; | |
1657 | ||
fbd6baed | 1658 | DEFUN ("w32-has-winsock", Fw32_has_winsock, Sw32_has_winsock, 0, 1, 0, |
33f09670 JR |
1659 | doc: /* Test for presence of the Windows socket library `winsock'. |
1660 | Returns non-nil if winsock support is present, nil otherwise. | |
1661 | ||
1662 | If the optional argument LOAD-NOW is non-nil, the winsock library is | |
1663 | also loaded immediately if not already loaded. If winsock is loaded, | |
1664 | the winsock local hostname is returned (since this may be different from | |
1665 | the value of `system-name' and should supplant it), otherwise t is | |
1666 | returned to indicate winsock support is present. */) | |
a11e68d0 RS |
1667 | (load_now) |
1668 | Lisp_Object load_now; | |
1669 | { | |
1670 | int have_winsock; | |
1671 | ||
1672 | have_winsock = init_winsock (!NILP (load_now)); | |
1673 | if (have_winsock) | |
1674 | { | |
1675 | if (winsock_lib != NULL) | |
1676 | { | |
1677 | /* Return new value for system-name. The best way to do this | |
1678 | is to call init_system_name, saving and restoring the | |
1679 | original value to avoid side-effects. */ | |
1680 | Lisp_Object orig_hostname = Vsystem_name; | |
1681 | Lisp_Object hostname; | |
1682 | ||
1683 | init_system_name (); | |
1684 | hostname = Vsystem_name; | |
1685 | Vsystem_name = orig_hostname; | |
1686 | return hostname; | |
1687 | } | |
1688 | return Qt; | |
1689 | } | |
1690 | return Qnil; | |
1691 | } | |
1692 | ||
fbd6baed | 1693 | DEFUN ("w32-unload-winsock", Fw32_unload_winsock, Sw32_unload_winsock, |
a11e68d0 | 1694 | 0, 0, 0, |
33f09670 JR |
1695 | doc: /* Unload the Windows socket library `winsock' if loaded. |
1696 | This is provided to allow dial-up socket connections to be disconnected | |
1697 | when no longer needed. Returns nil without unloading winsock if any | |
1698 | socket connections still exist. */) | |
a11e68d0 RS |
1699 | () |
1700 | { | |
1701 | return term_winsock () ? Qt : Qnil; | |
1702 | } | |
1703 | ||
1704 | #endif /* HAVE_SOCKETS */ | |
1705 | ||
93fdf2f8 | 1706 | \f |
b2fc9f3d GV |
1707 | /* Some miscellaneous functions that are Windows specific, but not GUI |
1708 | specific (ie. are applicable in terminal or batch mode as well). */ | |
1709 | ||
1710 | /* lifted from fileio.c */ | |
1711 | #define CORRECT_DIR_SEPS(s) \ | |
1712 | do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \ | |
1713 | else unixtodos_filename (s); \ | |
1714 | } while (0) | |
1715 | ||
1716 | DEFUN ("w32-short-file-name", Fw32_short_file_name, Sw32_short_file_name, 1, 1, 0, | |
33f09670 JR |
1717 | doc: /* Return the short file name version (8.3) of the full path of FILENAME. |
1718 | If FILENAME does not exist, return nil. | |
1719 | All path elements in FILENAME are converted to their short names. */) | |
b2fc9f3d GV |
1720 | (filename) |
1721 | Lisp_Object filename; | |
1722 | { | |
1723 | char shortname[MAX_PATH]; | |
1724 | ||
b7826503 | 1725 | CHECK_STRING (filename); |
b2fc9f3d GV |
1726 | |
1727 | /* first expand it. */ | |
1728 | filename = Fexpand_file_name (filename, Qnil); | |
1729 | ||
1730 | /* luckily, this returns the short version of each element in the path. */ | |
d5db4077 | 1731 | if (GetShortPathName (SDATA (filename), shortname, MAX_PATH) == 0) |
b2fc9f3d GV |
1732 | return Qnil; |
1733 | ||
1734 | CORRECT_DIR_SEPS (shortname); | |
1735 | ||
1736 | return build_string (shortname); | |
1737 | } | |
1738 | ||
1739 | ||
1740 | DEFUN ("w32-long-file-name", Fw32_long_file_name, Sw32_long_file_name, | |
1741 | 1, 1, 0, | |
33f09670 JR |
1742 | doc: /* Return the long file name version of the full path of FILENAME. |
1743 | If FILENAME does not exist, return nil. | |
1744 | All path elements in FILENAME are converted to their long names. */) | |
b2fc9f3d GV |
1745 | (filename) |
1746 | Lisp_Object filename; | |
1747 | { | |
1748 | char longname[ MAX_PATH ]; | |
1749 | ||
b7826503 | 1750 | CHECK_STRING (filename); |
b2fc9f3d GV |
1751 | |
1752 | /* first expand it. */ | |
1753 | filename = Fexpand_file_name (filename, Qnil); | |
1754 | ||
d5db4077 | 1755 | if (!w32_get_long_filename (SDATA (filename), longname, MAX_PATH)) |
b2fc9f3d GV |
1756 | return Qnil; |
1757 | ||
1758 | CORRECT_DIR_SEPS (longname); | |
1759 | ||
1760 | return build_string (longname); | |
1761 | } | |
1762 | ||
33f09670 JR |
1763 | DEFUN ("w32-set-process-priority", Fw32_set_process_priority, |
1764 | Sw32_set_process_priority, 2, 2, 0, | |
1765 | doc: /* Set the priority of PROCESS to PRIORITY. | |
1766 | If PROCESS is nil, the priority of Emacs is changed, otherwise the | |
1767 | priority of the process whose pid is PROCESS is changed. | |
1768 | PRIORITY should be one of the symbols high, normal, or low; | |
1769 | any other symbol will be interpreted as normal. | |
1770 | ||
1771 | If successful, the return value is t, otherwise nil. */) | |
b2fc9f3d GV |
1772 | (process, priority) |
1773 | Lisp_Object process, priority; | |
1774 | { | |
1775 | HANDLE proc_handle = GetCurrentProcess (); | |
1776 | DWORD priority_class = NORMAL_PRIORITY_CLASS; | |
1777 | Lisp_Object result = Qnil; | |
1778 | ||
b7826503 | 1779 | CHECK_SYMBOL (priority); |
b2fc9f3d GV |
1780 | |
1781 | if (!NILP (process)) | |
1782 | { | |
1783 | DWORD pid; | |
1784 | child_process *cp; | |
1785 | ||
b7826503 | 1786 | CHECK_NUMBER (process); |
b2fc9f3d GV |
1787 | |
1788 | /* Allow pid to be an internally generated one, or one obtained | |
1789 | externally. This is necessary because real pids on Win95 are | |
1790 | negative. */ | |
1791 | ||
1792 | pid = XINT (process); | |
1793 | cp = find_child_pid (pid); | |
1794 | if (cp != NULL) | |
1795 | pid = cp->procinfo.dwProcessId; | |
1796 | ||
1797 | proc_handle = OpenProcess (PROCESS_SET_INFORMATION, FALSE, pid); | |
1798 | } | |
1799 | ||
1800 | if (EQ (priority, Qhigh)) | |
1801 | priority_class = HIGH_PRIORITY_CLASS; | |
1802 | else if (EQ (priority, Qlow)) | |
1803 | priority_class = IDLE_PRIORITY_CLASS; | |
1804 | ||
1805 | if (proc_handle != NULL) | |
1806 | { | |
1807 | if (SetPriorityClass (proc_handle, priority_class)) | |
1808 | result = Qt; | |
1809 | if (!NILP (process)) | |
1810 | CloseHandle (proc_handle); | |
1811 | } | |
1812 | ||
1813 | return result; | |
1814 | } | |
1815 | ||
1816 | ||
33f09670 JR |
1817 | DEFUN ("w32-get-locale-info", Fw32_get_locale_info, |
1818 | Sw32_get_locale_info, 1, 2, 0, | |
1819 | doc: /* Return information about the Windows locale LCID. | |
1820 | By default, return a three letter locale code which encodes the default | |
1821 | language as the first two characters, and the country or regionial variant | |
1822 | as the third letter. For example, ENU refers to `English (United States)', | |
1823 | while ENC means `English (Canadian)'. | |
1824 | ||
1825 | If the optional argument LONGFORM is t, the long form of the locale | |
1826 | name is returned, e.g. `English (United States)' instead; if LONGFORM | |
1827 | is a number, it is interpreted as an LCTYPE constant and the corresponding | |
1828 | locale information is returned. | |
1829 | ||
1830 | If LCID (a 16-bit number) is not a valid locale, the result is nil. */) | |
b2fc9f3d GV |
1831 | (lcid, longform) |
1832 | Lisp_Object lcid, longform; | |
1833 | { | |
1834 | int got_abbrev; | |
1835 | int got_full; | |
1836 | char abbrev_name[32] = { 0 }; | |
1837 | char full_name[256] = { 0 }; | |
1838 | ||
b7826503 | 1839 | CHECK_NUMBER (lcid); |
b2fc9f3d GV |
1840 | |
1841 | if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED)) | |
1842 | return Qnil; | |
1843 | ||
1844 | if (NILP (longform)) | |
1845 | { | |
1846 | got_abbrev = GetLocaleInfo (XINT (lcid), | |
1847 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
1848 | abbrev_name, sizeof (abbrev_name)); | |
1849 | if (got_abbrev) | |
1850 | return build_string (abbrev_name); | |
1851 | } | |
0eaf5926 | 1852 | else if (EQ (longform, Qt)) |
b2fc9f3d GV |
1853 | { |
1854 | got_full = GetLocaleInfo (XINT (lcid), | |
1855 | LOCALE_SLANGUAGE | LOCALE_USE_CP_ACP, | |
1856 | full_name, sizeof (full_name)); | |
1857 | if (got_full) | |
1858 | return build_string (full_name); | |
1859 | } | |
0eaf5926 GV |
1860 | else if (NUMBERP (longform)) |
1861 | { | |
1862 | got_full = GetLocaleInfo (XINT (lcid), | |
1863 | XINT (longform), | |
1864 | full_name, sizeof (full_name)); | |
1865 | if (got_full) | |
1866 | return make_unibyte_string (full_name, got_full); | |
1867 | } | |
b2fc9f3d GV |
1868 | |
1869 | return Qnil; | |
1870 | } | |
1871 | ||
1872 | ||
33f09670 JR |
1873 | DEFUN ("w32-get-current-locale-id", Fw32_get_current_locale_id, |
1874 | Sw32_get_current_locale_id, 0, 0, 0, | |
1875 | doc: /* Return Windows locale id for current locale setting. | |
1876 | This is a numerical value; use `w32-get-locale-info' to convert to a | |
1877 | human-readable form. */) | |
b2fc9f3d GV |
1878 | () |
1879 | { | |
1880 | return make_number (GetThreadLocale ()); | |
1881 | } | |
1882 | ||
ef79fbba GV |
1883 | DWORD int_from_hex (char * s) |
1884 | { | |
1885 | DWORD val = 0; | |
1886 | static char hex[] = "0123456789abcdefABCDEF"; | |
1887 | char * p; | |
1888 | ||
1889 | while (*s && (p = strchr(hex, *s)) != NULL) | |
1890 | { | |
1891 | unsigned digit = p - hex; | |
1892 | if (digit > 15) | |
1893 | digit -= 6; | |
1894 | val = val * 16 + digit; | |
1895 | s++; | |
1896 | } | |
1897 | return val; | |
1898 | } | |
1899 | ||
1900 | /* We need to build a global list, since the EnumSystemLocale callback | |
1901 | function isn't given a context pointer. */ | |
1902 | Lisp_Object Vw32_valid_locale_ids; | |
1903 | ||
1904 | BOOL CALLBACK enum_locale_fn (LPTSTR localeNum) | |
1905 | { | |
1906 | DWORD id = int_from_hex (localeNum); | |
1907 | Vw32_valid_locale_ids = Fcons (make_number (id), Vw32_valid_locale_ids); | |
1908 | return TRUE; | |
1909 | } | |
1910 | ||
33f09670 JR |
1911 | DEFUN ("w32-get-valid-locale-ids", Fw32_get_valid_locale_ids, |
1912 | Sw32_get_valid_locale_ids, 0, 0, 0, | |
1913 | doc: /* Return list of all valid Windows locale ids. | |
1914 | Each id is a numerical value; use `w32-get-locale-info' to convert to a | |
1915 | human-readable form. */) | |
ef79fbba GV |
1916 | () |
1917 | { | |
1918 | Vw32_valid_locale_ids = Qnil; | |
1919 | ||
1920 | EnumSystemLocales (enum_locale_fn, LCID_SUPPORTED); | |
1921 | ||
1922 | Vw32_valid_locale_ids = Fnreverse (Vw32_valid_locale_ids); | |
1923 | return Vw32_valid_locale_ids; | |
1924 | } | |
1925 | ||
b2fc9f3d GV |
1926 | |
1927 | DEFUN ("w32-get-default-locale-id", Fw32_get_default_locale_id, Sw32_get_default_locale_id, 0, 1, 0, | |
33f09670 JR |
1928 | doc: /* Return Windows locale id for default locale setting. |
1929 | By default, the system default locale setting is returned; if the optional | |
1930 | parameter USERP is non-nil, the user default locale setting is returned. | |
1931 | This is a numerical value; use `w32-get-locale-info' to convert to a | |
1932 | human-readable form. */) | |
b2fc9f3d GV |
1933 | (userp) |
1934 | Lisp_Object userp; | |
1935 | { | |
1936 | if (NILP (userp)) | |
1937 | return make_number (GetSystemDefaultLCID ()); | |
1938 | return make_number (GetUserDefaultLCID ()); | |
1939 | } | |
1940 | ||
177c0ea7 | 1941 | |
b2fc9f3d | 1942 | DEFUN ("w32-set-current-locale", Fw32_set_current_locale, Sw32_set_current_locale, 1, 1, 0, |
33f09670 JR |
1943 | doc: /* Make Windows locale LCID be the current locale setting for Emacs. |
1944 | If successful, the new locale id is returned, otherwise nil. */) | |
b2fc9f3d GV |
1945 | (lcid) |
1946 | Lisp_Object lcid; | |
1947 | { | |
b7826503 | 1948 | CHECK_NUMBER (lcid); |
b2fc9f3d GV |
1949 | |
1950 | if (!IsValidLocale (XINT (lcid), LCID_SUPPORTED)) | |
1951 | return Qnil; | |
1952 | ||
1953 | if (!SetThreadLocale (XINT (lcid))) | |
1954 | return Qnil; | |
1955 | ||
ef79fbba GV |
1956 | /* Need to set input thread locale if present. */ |
1957 | if (dwWindowsThreadId) | |
1958 | /* Reply is not needed. */ | |
1959 | PostThreadMessage (dwWindowsThreadId, WM_EMACS_SETLOCALE, XINT (lcid), 0); | |
1960 | ||
b2fc9f3d GV |
1961 | return make_number (GetThreadLocale ()); |
1962 | } | |
1963 | ||
0eaf5926 GV |
1964 | |
1965 | /* We need to build a global list, since the EnumCodePages callback | |
1966 | function isn't given a context pointer. */ | |
1967 | Lisp_Object Vw32_valid_codepages; | |
1968 | ||
1969 | BOOL CALLBACK enum_codepage_fn (LPTSTR codepageNum) | |
1970 | { | |
1971 | DWORD id = atoi (codepageNum); | |
1972 | Vw32_valid_codepages = Fcons (make_number (id), Vw32_valid_codepages); | |
1973 | return TRUE; | |
1974 | } | |
1975 | ||
33f09670 JR |
1976 | DEFUN ("w32-get-valid-codepages", Fw32_get_valid_codepages, |
1977 | Sw32_get_valid_codepages, 0, 0, 0, | |
1978 | doc: /* Return list of all valid Windows codepages. */) | |
0eaf5926 GV |
1979 | () |
1980 | { | |
1981 | Vw32_valid_codepages = Qnil; | |
1982 | ||
1983 | EnumSystemCodePages (enum_codepage_fn, CP_SUPPORTED); | |
1984 | ||
1985 | Vw32_valid_codepages = Fnreverse (Vw32_valid_codepages); | |
1986 | return Vw32_valid_codepages; | |
1987 | } | |
1988 | ||
1989 | ||
33f09670 JR |
1990 | DEFUN ("w32-get-console-codepage", Fw32_get_console_codepage, |
1991 | Sw32_get_console_codepage, 0, 0, 0, | |
1992 | doc: /* Return current Windows codepage for console input. */) | |
0eaf5926 GV |
1993 | () |
1994 | { | |
1995 | return make_number (GetConsoleCP ()); | |
1996 | } | |
1997 | ||
177c0ea7 | 1998 | |
33f09670 JR |
1999 | DEFUN ("w32-set-console-codepage", Fw32_set_console_codepage, |
2000 | Sw32_set_console_codepage, 1, 1, 0, | |
2001 | doc: /* Make Windows codepage CP be the current codepage setting for Emacs. | |
2002 | The codepage setting affects keyboard input and display in tty mode. | |
2003 | If successful, the new CP is returned, otherwise nil. */) | |
0eaf5926 GV |
2004 | (cp) |
2005 | Lisp_Object cp; | |
2006 | { | |
b7826503 | 2007 | CHECK_NUMBER (cp); |
0eaf5926 GV |
2008 | |
2009 | if (!IsValidCodePage (XINT (cp))) | |
2010 | return Qnil; | |
2011 | ||
2012 | if (!SetConsoleCP (XINT (cp))) | |
2013 | return Qnil; | |
2014 | ||
2015 | return make_number (GetConsoleCP ()); | |
2016 | } | |
2017 | ||
2018 | ||
33f09670 JR |
2019 | DEFUN ("w32-get-console-output-codepage", Fw32_get_console_output_codepage, |
2020 | Sw32_get_console_output_codepage, 0, 0, 0, | |
2021 | doc: /* Return current Windows codepage for console output. */) | |
0eaf5926 GV |
2022 | () |
2023 | { | |
2024 | return make_number (GetConsoleOutputCP ()); | |
2025 | } | |
2026 | ||
177c0ea7 | 2027 | |
33f09670 JR |
2028 | DEFUN ("w32-set-console-output-codepage", Fw32_set_console_output_codepage, |
2029 | Sw32_set_console_output_codepage, 1, 1, 0, | |
2030 | doc: /* Make Windows codepage CP be the current codepage setting for Emacs. | |
2031 | The codepage setting affects keyboard input and display in tty mode. | |
2032 | If successful, the new CP is returned, otherwise nil. */) | |
0eaf5926 GV |
2033 | (cp) |
2034 | Lisp_Object cp; | |
2035 | { | |
b7826503 | 2036 | CHECK_NUMBER (cp); |
0eaf5926 GV |
2037 | |
2038 | if (!IsValidCodePage (XINT (cp))) | |
2039 | return Qnil; | |
2040 | ||
2041 | if (!SetConsoleOutputCP (XINT (cp))) | |
2042 | return Qnil; | |
2043 | ||
2044 | return make_number (GetConsoleOutputCP ()); | |
2045 | } | |
2046 | ||
2047 | ||
33f09670 JR |
2048 | DEFUN ("w32-get-codepage-charset", Fw32_get_codepage_charset, |
2049 | Sw32_get_codepage_charset, 1, 1, 0, | |
2050 | doc: /* Return charset of codepage CP. | |
2051 | Returns nil if the codepage is not valid. */) | |
0eaf5926 GV |
2052 | (cp) |
2053 | Lisp_Object cp; | |
2054 | { | |
2055 | CHARSETINFO info; | |
2056 | ||
b7826503 | 2057 | CHECK_NUMBER (cp); |
0eaf5926 GV |
2058 | |
2059 | if (!IsValidCodePage (XINT (cp))) | |
2060 | return Qnil; | |
2061 | ||
2062 | if (TranslateCharsetInfo ((DWORD *) XINT (cp), &info, TCI_SRCCODEPAGE)) | |
2063 | return make_number (info.ciCharset); | |
2064 | ||
2065 | return Qnil; | |
2066 | } | |
2067 | ||
2068 | ||
33f09670 JR |
2069 | DEFUN ("w32-get-valid-keyboard-layouts", Fw32_get_valid_keyboard_layouts, |
2070 | Sw32_get_valid_keyboard_layouts, 0, 0, 0, | |
2071 | doc: /* Return list of Windows keyboard languages and layouts. | |
2072 | The return value is a list of pairs of language id and layout id. */) | |
0eaf5926 GV |
2073 | () |
2074 | { | |
2075 | int num_layouts = GetKeyboardLayoutList (0, NULL); | |
2076 | HKL * layouts = (HKL *) alloca (num_layouts * sizeof (HKL)); | |
2077 | Lisp_Object obj = Qnil; | |
2078 | ||
2079 | if (GetKeyboardLayoutList (num_layouts, layouts) == num_layouts) | |
2080 | { | |
2081 | while (--num_layouts >= 0) | |
2082 | { | |
2083 | DWORD kl = (DWORD) layouts[num_layouts]; | |
2084 | ||
2085 | obj = Fcons (Fcons (make_number (kl & 0xffff), | |
2086 | make_number ((kl >> 16) & 0xffff)), | |
2087 | obj); | |
2088 | } | |
2089 | } | |
2090 | ||
2091 | return obj; | |
2092 | } | |
2093 | ||
2094 | ||
33f09670 JR |
2095 | DEFUN ("w32-get-keyboard-layout", Fw32_get_keyboard_layout, |
2096 | Sw32_get_keyboard_layout, 0, 0, 0, | |
2097 | doc: /* Return current Windows keyboard language and layout. | |
2098 | The return value is the cons of the language id and the layout id. */) | |
0eaf5926 GV |
2099 | () |
2100 | { | |
2101 | DWORD kl = (DWORD) GetKeyboardLayout (dwWindowsThreadId); | |
2102 | ||
2103 | return Fcons (make_number (kl & 0xffff), | |
2104 | make_number ((kl >> 16) & 0xffff)); | |
2105 | } | |
2106 | ||
177c0ea7 | 2107 | |
33f09670 JR |
2108 | DEFUN ("w32-set-keyboard-layout", Fw32_set_keyboard_layout, |
2109 | Sw32_set_keyboard_layout, 1, 1, 0, | |
2110 | doc: /* Make LAYOUT be the current keyboard layout for Emacs. | |
2111 | The keyboard layout setting affects interpretation of keyboard input. | |
2112 | If successful, the new layout id is returned, otherwise nil. */) | |
0eaf5926 GV |
2113 | (layout) |
2114 | Lisp_Object layout; | |
2115 | { | |
2116 | DWORD kl; | |
2117 | ||
b7826503 | 2118 | CHECK_CONS (layout); |
f4532092 AI |
2119 | CHECK_NUMBER_CAR (layout); |
2120 | CHECK_NUMBER_CDR (layout); | |
0eaf5926 | 2121 | |
8e713be6 KR |
2122 | kl = (XINT (XCAR (layout)) & 0xffff) |
2123 | | (XINT (XCDR (layout)) << 16); | |
0eaf5926 GV |
2124 | |
2125 | /* Synchronize layout with input thread. */ | |
2126 | if (dwWindowsThreadId) | |
2127 | { | |
2128 | if (PostThreadMessage (dwWindowsThreadId, WM_EMACS_SETKEYBOARDLAYOUT, | |
2129 | (WPARAM) kl, 0)) | |
2130 | { | |
2131 | MSG msg; | |
2132 | GetMessage (&msg, NULL, WM_EMACS_DONE, WM_EMACS_DONE); | |
2133 | ||
2134 | if (msg.wParam == 0) | |
2135 | return Qnil; | |
2136 | } | |
2137 | } | |
2138 | else if (!ActivateKeyboardLayout ((HKL) kl, 0)) | |
2139 | return Qnil; | |
2140 | ||
2141 | return Fw32_get_keyboard_layout (); | |
2142 | } | |
2143 | ||
b2fc9f3d | 2144 | \f |
93fdf2f8 RS |
2145 | syms_of_ntproc () |
2146 | { | |
b2fc9f3d GV |
2147 | Qhigh = intern ("high"); |
2148 | Qlow = intern ("low"); | |
2149 | ||
a11e68d0 | 2150 | #ifdef HAVE_SOCKETS |
fbd6baed GV |
2151 | defsubr (&Sw32_has_winsock); |
2152 | defsubr (&Sw32_unload_winsock); | |
a11e68d0 | 2153 | #endif |
b2fc9f3d GV |
2154 | defsubr (&Sw32_short_file_name); |
2155 | defsubr (&Sw32_long_file_name); | |
2156 | defsubr (&Sw32_set_process_priority); | |
2157 | defsubr (&Sw32_get_locale_info); | |
2158 | defsubr (&Sw32_get_current_locale_id); | |
2159 | defsubr (&Sw32_get_default_locale_id); | |
ef79fbba | 2160 | defsubr (&Sw32_get_valid_locale_ids); |
b2fc9f3d | 2161 | defsubr (&Sw32_set_current_locale); |
a11e68d0 | 2162 | |
0eaf5926 GV |
2163 | defsubr (&Sw32_get_console_codepage); |
2164 | defsubr (&Sw32_set_console_codepage); | |
2165 | defsubr (&Sw32_get_console_output_codepage); | |
2166 | defsubr (&Sw32_set_console_output_codepage); | |
2167 | defsubr (&Sw32_get_valid_codepages); | |
2168 | defsubr (&Sw32_get_codepage_charset); | |
2169 | ||
2170 | defsubr (&Sw32_get_valid_keyboard_layouts); | |
2171 | defsubr (&Sw32_get_keyboard_layout); | |
2172 | defsubr (&Sw32_set_keyboard_layout); | |
2173 | ||
fbd6baed | 2174 | DEFVAR_LISP ("w32-quote-process-args", &Vw32_quote_process_args, |
33f09670 JR |
2175 | doc: /* Non-nil enables quoting of process arguments to ensure correct parsing. |
2176 | Because Windows does not directly pass argv arrays to child processes, | |
2177 | programs have to reconstruct the argv array by parsing the command | |
2178 | line string. For an argument to contain a space, it must be enclosed | |
2179 | in double quotes or it will be parsed as multiple arguments. | |
2180 | ||
2181 | If the value is a character, that character will be used to escape any | |
2182 | quote characters that appear, otherwise a suitable escape character | |
2183 | will be chosen based on the type of the program. */); | |
b2fc9f3d | 2184 | Vw32_quote_process_args = Qt; |
817abdf6 | 2185 | |
fbd6baed GV |
2186 | DEFVAR_LISP ("w32-start-process-show-window", |
2187 | &Vw32_start_process_show_window, | |
33f09670 JR |
2188 | doc: /* When nil, new child processes hide their windows. |
2189 | When non-nil, they show their window in the method of their choice. | |
2190 | This variable doesn't affect GUI applications, which will never be hidden. */); | |
fbd6baed | 2191 | Vw32_start_process_show_window = Qnil; |
0ecf7d36 | 2192 | |
b2fc9f3d GV |
2193 | DEFVAR_LISP ("w32-start-process-share-console", |
2194 | &Vw32_start_process_share_console, | |
33f09670 JR |
2195 | doc: /* When nil, new child processes are given a new console. |
2196 | When non-nil, they share the Emacs console; this has the limitation of | |
804d894a | 2197 | allowing only one DOS subprocess to run at a time (whether started directly |
33f09670 JR |
2198 | or indirectly by Emacs), and preventing Emacs from cleanly terminating the |
2199 | subprocess group, but may allow Emacs to interrupt a subprocess that doesn't | |
2200 | otherwise respond to interrupts from Emacs. */); | |
b2fc9f3d GV |
2201 | Vw32_start_process_share_console = Qnil; |
2202 | ||
82e7c0a9 AI |
2203 | DEFVAR_LISP ("w32-start-process-inherit-error-mode", |
2204 | &Vw32_start_process_inherit_error_mode, | |
33f09670 JR |
2205 | doc: /* When nil, new child processes revert to the default error mode. |
2206 | When non-nil, they inherit their error mode setting from Emacs, which stops | |
2207 | them blocking when trying to access unmounted drives etc. */); | |
82e7c0a9 AI |
2208 | Vw32_start_process_inherit_error_mode = Qt; |
2209 | ||
5322f50b | 2210 | DEFVAR_INT ("w32-pipe-read-delay", &w32_pipe_read_delay, |
33f09670 JR |
2211 | doc: /* Forced delay before reading subprocess output. |
2212 | This is done to improve the buffering of subprocess output, by | |
2213 | avoiding the inefficiency of frequently reading small amounts of data. | |
2214 | ||
2215 | If positive, the value is the number of milliseconds to sleep before | |
2216 | reading the subprocess output. If negative, the magnitude is the number | |
2217 | of time slices to wait (effectively boosting the priority of the child | |
2218 | process temporarily). A value of zero disables waiting entirely. */); | |
5322f50b | 2219 | w32_pipe_read_delay = 50; |
0c04091e | 2220 | |
fbd6baed | 2221 | DEFVAR_LISP ("w32-downcase-file-names", &Vw32_downcase_file_names, |
33f09670 JR |
2222 | doc: /* Non-nil means convert all-upper case file names to lower case. |
2223 | This applies when performing completions and file name expansion. | |
2224 | Note that the value of this setting also affects remote file names, | |
2225 | so you probably don't want to set to non-nil if you use case-sensitive | |
177c0ea7 | 2226 | filesystems via ange-ftp. */); |
fbd6baed | 2227 | Vw32_downcase_file_names = Qnil; |
b2fc9f3d GV |
2228 | |
2229 | #if 0 | |
2230 | DEFVAR_LISP ("w32-generate-fake-inodes", &Vw32_generate_fake_inodes, | |
33f09670 JR |
2231 | doc: /* Non-nil means attempt to fake realistic inode values. |
2232 | This works by hashing the truename of files, and should detect | |
2233 | aliasing between long and short (8.3 DOS) names, but can have | |
2234 | false positives because of hash collisions. Note that determing | |
2235 | the truename of a file can be slow. */); | |
b2fc9f3d GV |
2236 | Vw32_generate_fake_inodes = Qnil; |
2237 | #endif | |
2238 | ||
2239 | DEFVAR_LISP ("w32-get-true-file-attributes", &Vw32_get_true_file_attributes, | |
45de4a6f JB |
2240 | doc: /* Non-nil means determine accurate link count in `file-attributes'. |
2241 | Note that this option is only useful for files on NTFS volumes, where hard links | |
c7a1aae9 | 2242 | are supported. Moreover, it slows down `file-attributes' noticeably. */); |
09ed9d88 | 2243 | Vw32_get_true_file_attributes = Qt; |
93fdf2f8 | 2244 | } |
c519b5e1 | 2245 | /* end of ntproc.c */ |
ab5796a9 MB |
2246 | |
2247 | /* arch-tag: 23d3a34c-06d2-48a1-833b-ac7609aa5250 | |
2248 | (do not change this comment) */ |