Commit | Line | Data |
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5a17353c DD |
1 | /* Utilities to execute a program in a subprocess (possibly linked by pipes |
2 | with other subprocesses), and wait for it. Generic Win32 specialization. | |
1e45deed | 3 | Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005 |
5a17353c DD |
4 | Free Software Foundation, Inc. |
5 | ||
6 | This file is part of the libiberty library. | |
7 | Libiberty is free software; you can redistribute it and/or | |
8 | modify it under the terms of the GNU Library General Public | |
9 | License as published by the Free Software Foundation; either | |
10 | version 2 of the License, or (at your option) any later version. | |
11 | ||
12 | Libiberty is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Library General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Library General Public | |
18 | License along with libiberty; see the file COPYING.LIB. If not, | |
979c05d3 NC |
19 | write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
5a17353c DD |
21 | |
22 | #include "pex-common.h" | |
23 | ||
f59e96e0 DD |
24 | #include <windows.h> |
25 | ||
b109e79a ILT |
26 | #ifdef HAVE_STDLIB_H |
27 | #include <stdlib.h> | |
28 | #endif | |
5a17353c DD |
29 | #ifdef HAVE_STRING_H |
30 | #include <string.h> | |
31 | #endif | |
32 | #ifdef HAVE_UNISTD_H | |
33 | #include <unistd.h> | |
34 | #endif | |
35 | #ifdef HAVE_SYS_WAIT_H | |
36 | #include <sys/wait.h> | |
37 | #endif | |
38 | ||
39 | #include <process.h> | |
40 | #include <io.h> | |
41 | #include <fcntl.h> | |
42 | #include <signal.h> | |
b109e79a | 43 | #include <sys/stat.h> |
8e1e9959 | 44 | #include <errno.h> |
5a17353c DD |
45 | |
46 | /* mingw32 headers may not define the following. */ | |
47 | ||
48 | #ifndef _P_WAIT | |
49 | # define _P_WAIT 0 | |
50 | # define _P_NOWAIT 1 | |
51 | # define _P_OVERLAY 2 | |
52 | # define _P_NOWAITO 3 | |
53 | # define _P_DETACH 4 | |
54 | ||
55 | # define WAIT_CHILD 0 | |
56 | # define WAIT_GRANDCHILD 1 | |
57 | #endif | |
58 | ||
f59e96e0 DD |
59 | #define MINGW_NAME "Minimalist GNU for Windows" |
60 | #define MINGW_NAME_LEN (sizeof(MINGW_NAME) - 1) | |
61 | ||
62 | /* Ensure that the executable pathname uses Win32 backslashes. This | |
63 | is not necessary on NT, but on W9x, forward slashes causes | |
64 | failure of spawn* and exec* functions (and probably any function | |
65 | that calls CreateProcess) *iff* the executable pathname (argv[0]) | |
66 | is a quoted string. And quoting is necessary in case a pathname | |
67 | contains embedded white space. You can't win. */ | |
68 | static void | |
69 | backslashify (char *s) | |
70 | { | |
71 | while ((s = strchr (s, '/')) != NULL) | |
72 | *s = '\\'; | |
73 | return; | |
74 | } | |
75 | ||
b109e79a ILT |
76 | static int pex_win32_open_read (struct pex_obj *, const char *, int); |
77 | static int pex_win32_open_write (struct pex_obj *, const char *, int); | |
78 | static long pex_win32_exec_child (struct pex_obj *, int, const char *, | |
79 | char * const *, int, int, int, | |
80 | const char **, int *); | |
81 | static int pex_win32_close (struct pex_obj *, int); | |
82 | static int pex_win32_wait (struct pex_obj *, long, int *, | |
83 | struct pex_time *, int, const char **, int *); | |
84 | static int pex_win32_pipe (struct pex_obj *, int *, int); | |
85 | static FILE *pex_win32_fdopenr (struct pex_obj *, int, int); | |
86 | ||
87 | /* The list of functions we pass to the common routines. */ | |
88 | ||
89 | const struct pex_funcs funcs = | |
5a17353c | 90 | { |
b109e79a ILT |
91 | pex_win32_open_read, |
92 | pex_win32_open_write, | |
93 | pex_win32_exec_child, | |
94 | pex_win32_close, | |
95 | pex_win32_wait, | |
96 | pex_win32_pipe, | |
97 | pex_win32_fdopenr, | |
98 | NULL /* cleanup */ | |
99 | }; | |
100 | ||
101 | /* Return a newly initialized pex_obj structure. */ | |
102 | ||
103 | struct pex_obj * | |
104 | pex_init (int flags, const char *pname, const char *tempbase) | |
105 | { | |
106 | return pex_init_common (flags, pname, tempbase, &funcs); | |
107 | } | |
108 | ||
109 | /* Open a file for reading. */ | |
110 | ||
111 | static int | |
112 | pex_win32_open_read (struct pex_obj *obj ATTRIBUTE_UNUSED, const char *name, | |
113 | int binary) | |
114 | { | |
115 | return _open (name, _O_RDONLY | (binary ? _O_BINARY : _O_TEXT)); | |
116 | } | |
117 | ||
118 | /* Open a file for writing. */ | |
119 | ||
120 | static int | |
121 | pex_win32_open_write (struct pex_obj *obj ATTRIBUTE_UNUSED, const char *name, | |
122 | int binary) | |
123 | { | |
124 | /* Note that we can't use O_EXCL here because gcc may have already | |
125 | created the temporary file via make_temp_file. */ | |
126 | return _open (name, | |
127 | (_O_WRONLY | _O_CREAT | _O_TRUNC | |
128 | | (binary ? _O_BINARY : _O_TEXT)), | |
129 | _S_IREAD | _S_IWRITE); | |
130 | } | |
131 | ||
132 | /* Close a file. */ | |
133 | ||
134 | static int | |
135 | pex_win32_close (struct pex_obj *obj ATTRIBUTE_UNUSED, int fd) | |
136 | { | |
137 | return _close (fd); | |
138 | } | |
139 | ||
f59e96e0 DD |
140 | #ifdef USE_MINGW_MSYS |
141 | static const char *mingw_keys[] = {"SOFTWARE", "Microsoft", "Windows", "CurrentVersion", "Uninstall", NULL}; | |
142 | ||
143 | /* Tack the executable on the end of a (possibly slash terminated) buffer | |
144 | and convert everything to \. */ | |
145 | static const char * | |
146 | tack_on_executable (char *buf, const char *executable) | |
147 | { | |
148 | char *p = strchr (buf, '\0'); | |
149 | if (p > buf && (p[-1] == '\\' || p[-1] == '/')) | |
150 | p[-1] = '\0'; | |
151 | backslashify (strcat (buf, executable)); | |
152 | return buf; | |
153 | } | |
154 | ||
155 | /* Walk down a registry hierarchy until the end. Return the key. */ | |
156 | static HKEY | |
157 | openkey (HKEY hStart, const char *keys[]) | |
158 | { | |
159 | HKEY hKey, hTmp; | |
160 | for (hKey = hStart; *keys; keys++) | |
161 | { | |
162 | LONG res; | |
163 | hTmp = hKey; | |
164 | res = RegOpenKey (hTmp, *keys, &hKey); | |
165 | ||
166 | if (hTmp != HKEY_LOCAL_MACHINE) | |
167 | RegCloseKey (hTmp); | |
168 | ||
169 | if (res != ERROR_SUCCESS) | |
170 | return NULL; | |
171 | } | |
172 | return hKey; | |
173 | } | |
174 | ||
175 | /* Return the "mingw root" as derived from the mingw uninstall information. */ | |
176 | static const char * | |
177 | mingw_rootify (const char *executable) | |
178 | { | |
179 | HKEY hKey, hTmp; | |
180 | DWORD maxlen; | |
181 | char *namebuf, *foundbuf; | |
182 | DWORD i; | |
183 | LONG res; | |
184 | ||
185 | /* Open the uninstall "directory". */ | |
186 | hKey = openkey (HKEY_LOCAL_MACHINE, mingw_keys); | |
187 | ||
188 | /* Not found. */ | |
189 | if (!hKey) | |
190 | return executable; | |
191 | ||
192 | /* Need to enumerate all of the keys here looking for one the most recent | |
193 | one for MinGW. */ | |
194 | if (RegQueryInfoKey (hKey, NULL, NULL, NULL, NULL, &maxlen, NULL, NULL, | |
195 | NULL, NULL, NULL, NULL) != ERROR_SUCCESS) | |
196 | { | |
197 | RegCloseKey (hKey); | |
198 | return executable; | |
199 | } | |
200 | namebuf = XNEWVEC (char, ++maxlen); | |
201 | foundbuf = XNEWVEC (char, maxlen); | |
202 | foundbuf[0] = '\0'; | |
203 | if (!namebuf || !foundbuf) | |
204 | { | |
205 | RegCloseKey (hKey); | |
206 | if (namebuf) | |
207 | free (namebuf); | |
208 | if (foundbuf) | |
209 | free (foundbuf); | |
210 | return executable; | |
211 | } | |
212 | ||
213 | /* Look through all of the keys for one that begins with Minimal GNU... | |
214 | Try to get the latest version by doing a string compare although that | |
215 | string never really works with version number sorting. */ | |
216 | for (i = 0; RegEnumKey (hKey, i, namebuf, maxlen) == ERROR_SUCCESS; i++) | |
217 | { | |
218 | int match = strcasecmp (namebuf, MINGW_NAME); | |
219 | if (match < 0) | |
220 | continue; | |
221 | if (match > 0 && strncasecmp (namebuf, MINGW_NAME, MINGW_NAME_LEN) > 0) | |
222 | continue; | |
223 | if (strcasecmp (namebuf, foundbuf) > 0) | |
224 | strcpy (foundbuf, namebuf); | |
225 | } | |
226 | free (namebuf); | |
227 | ||
228 | /* If foundbuf is empty, we didn't find anything. Punt. */ | |
229 | if (!foundbuf[0]) | |
230 | { | |
231 | free (foundbuf); | |
232 | RegCloseKey (hKey); | |
233 | return executable; | |
234 | } | |
235 | ||
236 | /* Open the key that we wanted */ | |
237 | res = RegOpenKey (hKey, foundbuf, &hTmp); | |
238 | RegCloseKey (hKey); | |
239 | free (foundbuf); | |
240 | ||
241 | /* Don't know why this would fail, but you gotta check */ | |
242 | if (res != ERROR_SUCCESS) | |
243 | return executable; | |
244 | ||
245 | maxlen = 0; | |
246 | /* Get the length of the value pointed to by InstallLocation */ | |
247 | if (RegQueryValueEx (hTmp, "InstallLocation", 0, NULL, NULL, | |
248 | &maxlen) != ERROR_SUCCESS || maxlen == 0) | |
249 | { | |
250 | RegCloseKey (hTmp); | |
251 | return executable; | |
252 | } | |
253 | ||
254 | /* Allocate space for the install location */ | |
255 | foundbuf = XNEWVEC (char, maxlen + strlen (executable)); | |
256 | if (!foundbuf) | |
257 | { | |
258 | free (foundbuf); | |
259 | RegCloseKey (hTmp); | |
260 | } | |
261 | ||
262 | /* Read the install location into the buffer */ | |
263 | res = RegQueryValueEx (hTmp, "InstallLocation", 0, NULL, (LPBYTE) foundbuf, | |
264 | &maxlen); | |
265 | RegCloseKey (hTmp); | |
266 | if (res != ERROR_SUCCESS) | |
267 | { | |
268 | free (foundbuf); | |
269 | return executable; | |
270 | } | |
271 | ||
272 | /* Concatenate the install location and the executable, turn all slashes | |
273 | to backslashes, and return that. */ | |
274 | return tack_on_executable (foundbuf, executable); | |
275 | } | |
276 | ||
277 | /* Read the install location of msys from it's installation file and | |
278 | rootify the executable based on that. */ | |
279 | static const char * | |
280 | msys_rootify (const char *executable) | |
281 | { | |
282 | size_t bufsize = 64; | |
283 | size_t execlen = strlen (executable) + 1; | |
284 | char *buf; | |
285 | DWORD res = 0; | |
286 | for (;;) | |
287 | { | |
288 | buf = XNEWVEC (char, bufsize + execlen); | |
289 | if (!buf) | |
290 | break; | |
291 | res = GetPrivateProfileString ("InstallSettings", "InstallPath", NULL, | |
292 | buf, bufsize, "msys.ini"); | |
293 | if (!res) | |
294 | break; | |
295 | if (strlen (buf) < bufsize) | |
296 | break; | |
297 | res = 0; | |
298 | free (buf); | |
299 | bufsize *= 2; | |
300 | if (bufsize > 65536) | |
301 | { | |
302 | buf = NULL; | |
303 | break; | |
304 | } | |
305 | } | |
306 | ||
307 | if (res) | |
308 | return tack_on_executable (buf, executable); | |
309 | ||
310 | /* failed */ | |
311 | if (buf) | |
312 | free (buf); | |
313 | return executable; | |
314 | } | |
315 | #endif | |
316 | ||
8e1e9959 DD |
317 | /* Return a Windows command-line from ARGV. It is the caller's |
318 | responsibility to free the string returned. */ | |
319 | ||
320 | static char * | |
321 | argv_to_cmdline (char *const *argv) | |
322 | { | |
323 | char *cmdline; | |
324 | char *p; | |
325 | size_t cmdline_len; | |
326 | int i, j, k; | |
327 | ||
328 | cmdline_len = 0; | |
329 | for (i = 0; argv[i]; i++) | |
330 | { | |
331 | /* We quote every last argument. This simplifies the problem; | |
332 | we need only escape embedded double-quotes and immediately | |
333 | preceeding backslash characters. A sequence of backslach characters | |
334 | that is not follwed by a double quote character will not be | |
335 | escaped. */ | |
336 | for (j = 0; argv[i][j]; j++) | |
337 | { | |
338 | if (argv[i][j] == '"') | |
339 | { | |
340 | /* Escape preceeding backslashes. */ | |
341 | for (k = j - 1; k >= 0 && argv[i][k] == '\\'; k--) | |
342 | cmdline_len++; | |
343 | /* Escape the qote character. */ | |
344 | cmdline_len++; | |
345 | } | |
346 | } | |
347 | /* Trailing backslashes also need to be escaped because they will be | |
348 | followed by the terminating quote. */ | |
349 | for (k = j - 1; k >= 0 && argv[i][k] == '\\'; k--) | |
350 | cmdline_len++; | |
351 | cmdline_len += j; | |
352 | cmdline_len += 3; /* for leading and trailing quotes and space */ | |
353 | } | |
354 | cmdline = xmalloc (cmdline_len); | |
355 | p = cmdline; | |
356 | for (i = 0; argv[i]; i++) | |
357 | { | |
358 | *p++ = '"'; | |
359 | for (j = 0; argv[i][j]; j++) | |
360 | { | |
361 | if (argv[i][j] == '"') | |
362 | { | |
363 | for (k = j - 1; k >= 0 && argv[i][k] == '\\'; k--) | |
364 | *p++ = '\\'; | |
365 | *p++ = '\\'; | |
366 | } | |
367 | *p++ = argv[i][j]; | |
368 | } | |
369 | for (k = j - 1; k >= 0 && argv[i][k] == '\\'; k--) | |
370 | *p++ = '\\'; | |
371 | *p++ = '"'; | |
372 | *p++ = ' '; | |
373 | } | |
374 | p[-1] = '\0'; | |
375 | return cmdline; | |
376 | } | |
377 | ||
378 | static const char *const | |
379 | std_suffixes[] = { | |
380 | ".com", | |
381 | ".exe", | |
382 | ".bat", | |
383 | ".cmd", | |
384 | 0 | |
385 | }; | |
386 | static const char *const | |
387 | no_suffixes[] = { | |
388 | "", | |
389 | 0 | |
390 | }; | |
391 | ||
392 | /* Returns the full path to PROGRAM. If SEARCH is true, look for | |
393 | PROGRAM in each directory in PATH. */ | |
394 | ||
395 | static char * | |
396 | find_executable (const char *program, BOOL search) | |
397 | { | |
398 | char *full_executable; | |
399 | char *e; | |
400 | size_t fe_len; | |
401 | const char *path = 0; | |
402 | const char *const *ext; | |
403 | const char *p, *q; | |
404 | size_t proglen = strlen (program); | |
405 | int has_extension = !!strchr (program, '.'); | |
406 | int has_slash = (strchr (program, '/') || strchr (program, '\\')); | |
407 | HANDLE h; | |
408 | ||
409 | if (has_slash) | |
410 | search = FALSE; | |
411 | ||
412 | if (search) | |
413 | path = getenv ("PATH"); | |
414 | if (!path) | |
415 | path = ""; | |
416 | ||
417 | fe_len = 0; | |
418 | for (p = path; *p; p = q) | |
419 | { | |
420 | q = p; | |
421 | while (*q != ';' && *q != '\0') | |
422 | q++; | |
423 | if ((size_t)(q - p) > fe_len) | |
424 | fe_len = q - p; | |
425 | if (*q == ';') | |
426 | q++; | |
427 | } | |
428 | fe_len = fe_len + 1 + proglen + (has_extension ? 1 : 5); | |
429 | full_executable = xmalloc (fe_len); | |
430 | ||
431 | p = path; | |
432 | do | |
433 | { | |
434 | q = p; | |
435 | while (*q != ';' && *q != '\0') | |
436 | q++; | |
437 | ||
438 | e = full_executable; | |
439 | memcpy (e, p, q - p); | |
440 | e += (q - p); | |
441 | if (q - p) | |
442 | *e++ = '\\'; | |
443 | strcpy (e, program); | |
444 | ||
445 | if (*q == ';') | |
446 | q++; | |
447 | ||
448 | for (e = full_executable; *e; e++) | |
449 | if (*e == '/') | |
450 | *e = '\\'; | |
451 | ||
452 | /* At this point, e points to the terminating NUL character for | |
453 | full_executable. */ | |
454 | for (ext = has_extension ? no_suffixes : std_suffixes; *ext; ext++) | |
455 | { | |
456 | /* Remove any current extension. */ | |
457 | *e = '\0'; | |
458 | /* Add the new one. */ | |
459 | strcat (full_executable, *ext); | |
460 | ||
461 | /* Attempt to open this file. */ | |
462 | h = CreateFile (full_executable, GENERIC_READ, | |
463 | FILE_SHARE_READ | FILE_SHARE_WRITE, | |
464 | 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); | |
465 | if (h != INVALID_HANDLE_VALUE) | |
466 | goto found; | |
467 | } | |
468 | p = q; | |
469 | } | |
470 | while (*p); | |
471 | free (full_executable); | |
472 | return 0; | |
473 | ||
474 | found: | |
475 | CloseHandle (h); | |
476 | return full_executable; | |
477 | } | |
478 | ||
479 | /* Low-level process creation function. */ | |
480 | ||
481 | static long | |
482 | win32_spawn (const char *executable, | |
483 | BOOL search, | |
484 | char *const *argv, | |
485 | DWORD dwCreationFlags, | |
486 | LPSTARTUPINFO si, | |
487 | LPPROCESS_INFORMATION pi) | |
488 | { | |
489 | char *full_executable; | |
490 | char *cmdline; | |
491 | ||
492 | full_executable = NULL; | |
493 | cmdline = NULL; | |
494 | ||
495 | full_executable = find_executable (executable, search); | |
496 | if (!full_executable) | |
497 | goto error; | |
498 | cmdline = argv_to_cmdline (argv); | |
499 | if (!cmdline) | |
500 | goto error; | |
501 | ||
502 | /* Create the child process. */ | |
503 | if (!CreateProcess (full_executable, cmdline, | |
504 | /*lpProcessAttributes=*/NULL, | |
505 | /*lpThreadAttributes=*/NULL, | |
506 | /*bInheritHandles=*/TRUE, | |
507 | dwCreationFlags, | |
508 | /*lpEnvironment=*/NULL, | |
509 | /*lpCurrentDirectory=*/NULL, | |
510 | si, | |
511 | pi)) | |
512 | { | |
513 | free (full_executable); | |
514 | return -1; | |
515 | } | |
516 | ||
517 | /* Clean up. */ | |
518 | CloseHandle (pi->hThread); | |
519 | free (full_executable); | |
520 | ||
521 | return (long) pi->hProcess; | |
522 | ||
523 | error: | |
524 | if (cmdline) | |
525 | free (cmdline); | |
526 | if (full_executable) | |
527 | free (full_executable); | |
528 | return -1; | |
529 | } | |
530 | ||
f59e96e0 | 531 | static long |
8e1e9959 DD |
532 | spawn_script (const char *executable, char *const *argv, |
533 | DWORD dwCreationFlags, | |
534 | LPSTARTUPINFO si, | |
535 | LPPROCESS_INFORMATION pi) | |
f59e96e0 DD |
536 | { |
537 | int pid = -1; | |
538 | int save_errno = errno; | |
539 | int fd = _open (executable, _O_RDONLY); | |
540 | ||
541 | if (fd >= 0) | |
542 | { | |
543 | char buf[MAX_PATH + 5]; | |
544 | int len = _read (fd, buf, sizeof (buf) - 1); | |
545 | _close (fd); | |
546 | if (len > 3) | |
547 | { | |
548 | char *eol; | |
549 | buf[len] = '\0'; | |
550 | eol = strchr (buf, '\n'); | |
551 | if (eol && strncmp (buf, "#!", 2) == 0) | |
552 | { | |
553 | char *executable1; | |
554 | const char ** avhere = (const char **) --argv; | |
555 | do | |
556 | *eol = '\0'; | |
557 | while (*--eol == '\r' || *eol == ' ' || *eol == '\t'); | |
558 | for (executable1 = buf + 2; *executable1 == ' ' || *executable1 == '\t'; executable1++) | |
559 | continue; | |
560 | ||
561 | backslashify (executable1); | |
562 | *avhere = executable1; | |
563 | #ifndef USE_MINGW_MSYS | |
564 | executable = strrchr (executable1, '\\') + 1; | |
565 | if (!executable) | |
566 | executable = executable1; | |
8e1e9959 DD |
567 | pid = win32_spawn (executable, TRUE, argv, |
568 | dwCreationFlags, si, pi); | |
f59e96e0 DD |
569 | #else |
570 | if (strchr (executable1, '\\') == NULL) | |
8e1e9959 DD |
571 | pid = win32_spawn (executable1, TRUE, argv, |
572 | dwCreationFlags, si, pi); | |
f59e96e0 | 573 | else if (executable1[0] != '\\') |
8e1e9959 DD |
574 | pid = win32_spawn (executable1, FALSE, argv, |
575 | dwCreationFlags, si, pi); | |
f59e96e0 DD |
576 | else |
577 | { | |
578 | const char *newex = mingw_rootify (executable1); | |
579 | *avhere = newex; | |
8e1e9959 DD |
580 | pid = win32_spawn (newex, FALSE, argv, |
581 | dwCreationFlags, si, pi); | |
f59e96e0 DD |
582 | if (executable1 != newex) |
583 | free ((char *) newex); | |
584 | if (pid < 0) | |
585 | { | |
586 | newex = msys_rootify (executable1); | |
587 | if (newex != executable1) | |
588 | { | |
589 | *avhere = newex; | |
8e1e9959 DD |
590 | pid = win32_spawn (newex, FALSE, argv, |
591 | dwCreationFlags, si, pi); | |
f59e96e0 DD |
592 | free ((char *) newex); |
593 | } | |
594 | } | |
595 | } | |
596 | #endif | |
597 | } | |
598 | } | |
599 | } | |
600 | if (pid < 0) | |
601 | errno = save_errno; | |
602 | return pid; | |
603 | } | |
604 | ||
b109e79a ILT |
605 | /* Execute a child. */ |
606 | ||
607 | static long | |
608 | pex_win32_exec_child (struct pex_obj *obj ATTRIBUTE_UNUSED, int flags, | |
609 | const char *executable, char * const * argv, | |
610 | int in, int out, int errdes, const char **errmsg, | |
611 | int *err) | |
612 | { | |
b109e79a | 613 | long pid; |
8e1e9959 DD |
614 | HANDLE stdin_handle; |
615 | HANDLE stdout_handle; | |
616 | HANDLE stderr_handle; | |
617 | DWORD dwCreationFlags; | |
618 | OSVERSIONINFO version_info; | |
619 | STARTUPINFO si; | |
620 | PROCESS_INFORMATION pi; | |
621 | ||
622 | stdin_handle = INVALID_HANDLE_VALUE; | |
623 | stdout_handle = INVALID_HANDLE_VALUE; | |
624 | stderr_handle = INVALID_HANDLE_VALUE; | |
625 | ||
626 | stdin_handle = (HANDLE) _get_osfhandle (in); | |
627 | stdout_handle = (HANDLE) _get_osfhandle (out); | |
628 | if (!(flags & PEX_STDERR_TO_STDOUT)) | |
629 | stderr_handle = (HANDLE) _get_osfhandle (errdes); | |
630 | else | |
631 | stderr_handle = stdout_handle; | |
632 | ||
633 | /* Determine the version of Windows we are running on. */ | |
634 | version_info.dwOSVersionInfoSize = sizeof (version_info); | |
635 | GetVersionEx (&version_info); | |
636 | if (version_info.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) | |
637 | /* On Windows 95/98/ME the CREATE_NO_WINDOW flag is not | |
638 | supported, so we cannot avoid creating a console window. */ | |
639 | dwCreationFlags = 0; | |
640 | else | |
5a17353c | 641 | { |
8e1e9959 DD |
642 | HANDLE conout_handle; |
643 | ||
644 | /* Determine whether or not we have an associated console. */ | |
645 | conout_handle = CreateFile("CONOUT$", | |
646 | GENERIC_WRITE, | |
647 | FILE_SHARE_WRITE, | |
648 | /*lpSecurityAttributes=*/NULL, | |
649 | OPEN_EXISTING, | |
650 | FILE_ATTRIBUTE_NORMAL, | |
651 | /*hTemplateFile=*/NULL); | |
652 | if (conout_handle == INVALID_HANDLE_VALUE) | |
653 | /* There is no console associated with this process. Since | |
654 | the child is a console process, the OS would normally | |
655 | create a new console Window for the child. Since we'll be | |
656 | redirecting the child's standard streams, we do not need | |
657 | the console window. */ | |
658 | dwCreationFlags = CREATE_NO_WINDOW; | |
659 | else | |
b109e79a | 660 | { |
8e1e9959 DD |
661 | /* There is a console associated with the process, so the OS |
662 | will not create a new console. And, if we use | |
663 | CREATE_NO_WINDOW in this situation, the child will have | |
664 | no associated console. Therefore, if the child's | |
665 | standard streams are connected to the console, the output | |
666 | will be discarded. */ | |
667 | CloseHandle(conout_handle); | |
668 | dwCreationFlags = 0; | |
b109e79a | 669 | } |
5a17353c DD |
670 | } |
671 | ||
8e1e9959 DD |
672 | /* Since the child will be a console process, it will, by default, |
673 | connect standard input/output to its console. However, we want | |
674 | the child to use the handles specifically designated above. In | |
675 | addition, if there is no console (such as when we are running in | |
676 | a Cygwin X window), then we must redirect the child's | |
677 | input/output, as there is no console for the child to use. */ | |
678 | memset (&si, 0, sizeof (si)); | |
679 | si.cb = sizeof (si); | |
680 | si.dwFlags = STARTF_USESTDHANDLES; | |
681 | si.hStdInput = stdin_handle; | |
682 | si.hStdOutput = stdout_handle; | |
683 | si.hStdError = stderr_handle; | |
684 | ||
685 | /* Create the child process. */ | |
686 | pid = win32_spawn (executable, (flags & PEX_SEARCH) != 0, | |
687 | argv, dwCreationFlags, &si, &pi); | |
f59e96e0 | 688 | if (pid == -1) |
8e1e9959 | 689 | pid = spawn_script (executable, argv, dwCreationFlags, &si, &pi); |
b109e79a | 690 | if (pid == -1) |
5a17353c | 691 | { |
8e1e9959 DD |
692 | *err = ENOENT; |
693 | *errmsg = "CreateProcess"; | |
5a17353c DD |
694 | } |
695 | ||
8e1e9959 DD |
696 | /* Close the standard output and standard error handles in the |
697 | parent. */ | |
698 | if (out != STDOUT_FILENO) | |
699 | obj->funcs->close (obj, out); | |
700 | if (errdes != STDERR_FILENO) | |
701 | obj->funcs->close (obj, errdes); | |
5a17353c DD |
702 | |
703 | return pid; | |
704 | } | |
705 | ||
b109e79a ILT |
706 | /* Wait for a child process to complete. MS CRTDLL doesn't return |
707 | enough information in status to decide if the child exited due to a | |
708 | signal or not, rather it simply returns an integer with the exit | |
709 | code of the child; eg., if the child exited with an abort() call | |
710 | and didn't have a handler for SIGABRT, it simply returns with | |
711 | status == 3. We fix the status code to conform to the usual WIF* | |
712 | macros. Note that WIFSIGNALED will never be true under CRTDLL. */ | |
713 | ||
714 | static int | |
715 | pex_win32_wait (struct pex_obj *obj ATTRIBUTE_UNUSED, long pid, | |
716 | int *status, struct pex_time *time, int done ATTRIBUTE_UNUSED, | |
717 | const char **errmsg, int *err) | |
5a17353c | 718 | { |
8e1e9959 DD |
719 | DWORD termstat; |
720 | HANDLE h; | |
5a17353c | 721 | |
b109e79a ILT |
722 | if (time != NULL) |
723 | memset (time, 0, sizeof *time); | |
724 | ||
8e1e9959 DD |
725 | h = (HANDLE) pid; |
726 | ||
b109e79a ILT |
727 | /* FIXME: If done is non-zero, we should probably try to kill the |
728 | process. */ | |
8e1e9959 | 729 | if (WaitForSingleObject (h, INFINITE) != WAIT_OBJECT_0) |
b109e79a | 730 | { |
8e1e9959 DD |
731 | CloseHandle (h); |
732 | *err = ECHILD; | |
733 | *errmsg = "WaitForSingleObject"; | |
b109e79a ILT |
734 | return -1; |
735 | } | |
5a17353c | 736 | |
8e1e9959 DD |
737 | GetExitCodeProcess (h, &termstat); |
738 | CloseHandle (h); | |
739 | ||
740 | /* A value of 3 indicates that the child caught a signal, but not | |
741 | which one. Since only SIGABRT, SIGFPE and SIGINT do anything, we | |
742 | report SIGABRT. */ | |
5a17353c DD |
743 | if (termstat == 3) |
744 | *status = SIGABRT; | |
745 | else | |
8e1e9959 | 746 | *status = (termstat & 0xff) << 8; |
5a17353c | 747 | |
b109e79a ILT |
748 | return 0; |
749 | } | |
750 | ||
751 | /* Create a pipe. */ | |
752 | ||
753 | static int | |
754 | pex_win32_pipe (struct pex_obj *obj ATTRIBUTE_UNUSED, int *p, | |
755 | int binary) | |
756 | { | |
757 | return _pipe (p, 256, binary ? _O_BINARY : _O_TEXT); | |
758 | } | |
759 | ||
760 | /* Get a FILE pointer to read from a file descriptor. */ | |
761 | ||
762 | static FILE * | |
763 | pex_win32_fdopenr (struct pex_obj *obj ATTRIBUTE_UNUSED, int fd, | |
764 | int binary) | |
765 | { | |
766 | return fdopen (fd, binary ? "rb" : "r"); | |
5a17353c | 767 | } |
f59e96e0 DD |
768 | |
769 | #ifdef MAIN | |
770 | #include <stdio.h> | |
771 | ||
772 | int | |
773 | main (int argc ATTRIBUTE_UNUSED, char **argv) | |
774 | { | |
775 | char const *errmsg; | |
776 | int err; | |
777 | argv++; | |
778 | printf ("%ld\n", pex_win32_exec_child (NULL, PEX_SEARCH, argv[0], argv, 0, 1, 2, &errmsg, &err)); | |
779 | exit (0); | |
780 | } | |
781 | #endif |