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Commit | Line | Data |
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55d0e5e0 ZW |
1 | /* Utilities to execute a program in a subprocess (possibly linked by pipes |
2 | with other subprocesses), and wait for it. Generic Win32 specialization. | |
885f2199 | 3 | Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005 |
55d0e5e0 ZW |
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, | |
ee58dffd NC |
19 | write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
55d0e5e0 ZW |
21 | |
22 | #include "pex-common.h" | |
23 | ||
0d676b85 CF |
24 | #include <windows.h> |
25 | ||
a584cf65 ILT |
26 | #ifdef HAVE_STDLIB_H |
27 | #include <stdlib.h> | |
28 | #endif | |
55d0e5e0 ZW |
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> | |
a584cf65 | 43 | #include <sys/stat.h> |
bd9e7c5c | 44 | #include <errno.h> |
55d0e5e0 ZW |
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 | ||
0d676b85 CF |
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 | ||
a584cf65 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); | |
8eff378c | 86 | static FILE *pex_win32_fdopenw (struct pex_obj *, int, int); |
a584cf65 ILT |
87 | |
88 | /* The list of functions we pass to the common routines. */ | |
89 | ||
90 | const struct pex_funcs funcs = | |
55d0e5e0 | 91 | { |
a584cf65 ILT |
92 | pex_win32_open_read, |
93 | pex_win32_open_write, | |
94 | pex_win32_exec_child, | |
95 | pex_win32_close, | |
96 | pex_win32_wait, | |
97 | pex_win32_pipe, | |
98 | pex_win32_fdopenr, | |
8eff378c | 99 | pex_win32_fdopenw, |
a584cf65 ILT |
100 | NULL /* cleanup */ |
101 | }; | |
102 | ||
103 | /* Return a newly initialized pex_obj structure. */ | |
104 | ||
105 | struct pex_obj * | |
106 | pex_init (int flags, const char *pname, const char *tempbase) | |
107 | { | |
108 | return pex_init_common (flags, pname, tempbase, &funcs); | |
109 | } | |
110 | ||
111 | /* Open a file for reading. */ | |
112 | ||
113 | static int | |
114 | pex_win32_open_read (struct pex_obj *obj ATTRIBUTE_UNUSED, const char *name, | |
115 | int binary) | |
116 | { | |
117 | return _open (name, _O_RDONLY | (binary ? _O_BINARY : _O_TEXT)); | |
118 | } | |
119 | ||
120 | /* Open a file for writing. */ | |
121 | ||
122 | static int | |
123 | pex_win32_open_write (struct pex_obj *obj ATTRIBUTE_UNUSED, const char *name, | |
124 | int binary) | |
125 | { | |
126 | /* Note that we can't use O_EXCL here because gcc may have already | |
127 | created the temporary file via make_temp_file. */ | |
128 | return _open (name, | |
129 | (_O_WRONLY | _O_CREAT | _O_TRUNC | |
130 | | (binary ? _O_BINARY : _O_TEXT)), | |
131 | _S_IREAD | _S_IWRITE); | |
132 | } | |
133 | ||
134 | /* Close a file. */ | |
135 | ||
136 | static int | |
137 | pex_win32_close (struct pex_obj *obj ATTRIBUTE_UNUSED, int fd) | |
138 | { | |
139 | return _close (fd); | |
140 | } | |
141 | ||
0d676b85 CF |
142 | #ifdef USE_MINGW_MSYS |
143 | static const char *mingw_keys[] = {"SOFTWARE", "Microsoft", "Windows", "CurrentVersion", "Uninstall", NULL}; | |
144 | ||
145 | /* Tack the executable on the end of a (possibly slash terminated) buffer | |
146 | and convert everything to \. */ | |
147 | static const char * | |
148 | tack_on_executable (char *buf, const char *executable) | |
149 | { | |
150 | char *p = strchr (buf, '\0'); | |
151 | if (p > buf && (p[-1] == '\\' || p[-1] == '/')) | |
152 | p[-1] = '\0'; | |
153 | backslashify (strcat (buf, executable)); | |
154 | return buf; | |
155 | } | |
156 | ||
157 | /* Walk down a registry hierarchy until the end. Return the key. */ | |
158 | static HKEY | |
159 | openkey (HKEY hStart, const char *keys[]) | |
160 | { | |
161 | HKEY hKey, hTmp; | |
162 | for (hKey = hStart; *keys; keys++) | |
163 | { | |
164 | LONG res; | |
165 | hTmp = hKey; | |
166 | res = RegOpenKey (hTmp, *keys, &hKey); | |
167 | ||
168 | if (hTmp != HKEY_LOCAL_MACHINE) | |
169 | RegCloseKey (hTmp); | |
170 | ||
171 | if (res != ERROR_SUCCESS) | |
172 | return NULL; | |
173 | } | |
174 | return hKey; | |
175 | } | |
176 | ||
177 | /* Return the "mingw root" as derived from the mingw uninstall information. */ | |
178 | static const char * | |
179 | mingw_rootify (const char *executable) | |
180 | { | |
181 | HKEY hKey, hTmp; | |
182 | DWORD maxlen; | |
183 | char *namebuf, *foundbuf; | |
184 | DWORD i; | |
185 | LONG res; | |
186 | ||
187 | /* Open the uninstall "directory". */ | |
188 | hKey = openkey (HKEY_LOCAL_MACHINE, mingw_keys); | |
189 | ||
190 | /* Not found. */ | |
191 | if (!hKey) | |
192 | return executable; | |
193 | ||
194 | /* Need to enumerate all of the keys here looking for one the most recent | |
195 | one for MinGW. */ | |
196 | if (RegQueryInfoKey (hKey, NULL, NULL, NULL, NULL, &maxlen, NULL, NULL, | |
197 | NULL, NULL, NULL, NULL) != ERROR_SUCCESS) | |
198 | { | |
199 | RegCloseKey (hKey); | |
200 | return executable; | |
201 | } | |
202 | namebuf = XNEWVEC (char, ++maxlen); | |
203 | foundbuf = XNEWVEC (char, maxlen); | |
204 | foundbuf[0] = '\0'; | |
205 | if (!namebuf || !foundbuf) | |
206 | { | |
207 | RegCloseKey (hKey); | |
208 | if (namebuf) | |
209 | free (namebuf); | |
210 | if (foundbuf) | |
211 | free (foundbuf); | |
212 | return executable; | |
213 | } | |
214 | ||
215 | /* Look through all of the keys for one that begins with Minimal GNU... | |
216 | Try to get the latest version by doing a string compare although that | |
217 | string never really works with version number sorting. */ | |
218 | for (i = 0; RegEnumKey (hKey, i, namebuf, maxlen) == ERROR_SUCCESS; i++) | |
219 | { | |
220 | int match = strcasecmp (namebuf, MINGW_NAME); | |
221 | if (match < 0) | |
222 | continue; | |
223 | if (match > 0 && strncasecmp (namebuf, MINGW_NAME, MINGW_NAME_LEN) > 0) | |
224 | continue; | |
225 | if (strcasecmp (namebuf, foundbuf) > 0) | |
226 | strcpy (foundbuf, namebuf); | |
227 | } | |
228 | free (namebuf); | |
229 | ||
230 | /* If foundbuf is empty, we didn't find anything. Punt. */ | |
231 | if (!foundbuf[0]) | |
232 | { | |
233 | free (foundbuf); | |
234 | RegCloseKey (hKey); | |
235 | return executable; | |
236 | } | |
237 | ||
238 | /* Open the key that we wanted */ | |
239 | res = RegOpenKey (hKey, foundbuf, &hTmp); | |
240 | RegCloseKey (hKey); | |
241 | free (foundbuf); | |
242 | ||
243 | /* Don't know why this would fail, but you gotta check */ | |
244 | if (res != ERROR_SUCCESS) | |
245 | return executable; | |
246 | ||
247 | maxlen = 0; | |
248 | /* Get the length of the value pointed to by InstallLocation */ | |
249 | if (RegQueryValueEx (hTmp, "InstallLocation", 0, NULL, NULL, | |
250 | &maxlen) != ERROR_SUCCESS || maxlen == 0) | |
251 | { | |
252 | RegCloseKey (hTmp); | |
253 | return executable; | |
254 | } | |
255 | ||
256 | /* Allocate space for the install location */ | |
257 | foundbuf = XNEWVEC (char, maxlen + strlen (executable)); | |
258 | if (!foundbuf) | |
259 | { | |
260 | free (foundbuf); | |
261 | RegCloseKey (hTmp); | |
262 | } | |
263 | ||
264 | /* Read the install location into the buffer */ | |
265 | res = RegQueryValueEx (hTmp, "InstallLocation", 0, NULL, (LPBYTE) foundbuf, | |
266 | &maxlen); | |
267 | RegCloseKey (hTmp); | |
268 | if (res != ERROR_SUCCESS) | |
269 | { | |
270 | free (foundbuf); | |
271 | return executable; | |
272 | } | |
273 | ||
274 | /* Concatenate the install location and the executable, turn all slashes | |
275 | to backslashes, and return that. */ | |
276 | return tack_on_executable (foundbuf, executable); | |
277 | } | |
278 | ||
279 | /* Read the install location of msys from it's installation file and | |
280 | rootify the executable based on that. */ | |
281 | static const char * | |
282 | msys_rootify (const char *executable) | |
283 | { | |
284 | size_t bufsize = 64; | |
285 | size_t execlen = strlen (executable) + 1; | |
286 | char *buf; | |
287 | DWORD res = 0; | |
288 | for (;;) | |
289 | { | |
290 | buf = XNEWVEC (char, bufsize + execlen); | |
291 | if (!buf) | |
292 | break; | |
293 | res = GetPrivateProfileString ("InstallSettings", "InstallPath", NULL, | |
294 | buf, bufsize, "msys.ini"); | |
295 | if (!res) | |
296 | break; | |
297 | if (strlen (buf) < bufsize) | |
298 | break; | |
299 | res = 0; | |
300 | free (buf); | |
301 | bufsize *= 2; | |
302 | if (bufsize > 65536) | |
303 | { | |
304 | buf = NULL; | |
305 | break; | |
306 | } | |
307 | } | |
308 | ||
309 | if (res) | |
310 | return tack_on_executable (buf, executable); | |
311 | ||
312 | /* failed */ | |
313 | if (buf) | |
314 | free (buf); | |
315 | return executable; | |
316 | } | |
317 | #endif | |
318 | ||
bd9e7c5c MM |
319 | /* Return a Windows command-line from ARGV. It is the caller's |
320 | responsibility to free the string returned. */ | |
321 | ||
322 | static char * | |
323 | argv_to_cmdline (char *const *argv) | |
324 | { | |
325 | char *cmdline; | |
326 | char *p; | |
327 | size_t cmdline_len; | |
328 | int i, j, k; | |
329 | ||
330 | cmdline_len = 0; | |
331 | for (i = 0; argv[i]; i++) | |
332 | { | |
333 | /* We quote every last argument. This simplifies the problem; | |
334 | we need only escape embedded double-quotes and immediately | |
335 | preceeding backslash characters. A sequence of backslach characters | |
336 | that is not follwed by a double quote character will not be | |
337 | escaped. */ | |
338 | for (j = 0; argv[i][j]; j++) | |
339 | { | |
340 | if (argv[i][j] == '"') | |
341 | { | |
342 | /* Escape preceeding backslashes. */ | |
343 | for (k = j - 1; k >= 0 && argv[i][k] == '\\'; k--) | |
344 | cmdline_len++; | |
345 | /* Escape the qote character. */ | |
346 | cmdline_len++; | |
347 | } | |
348 | } | |
349 | /* Trailing backslashes also need to be escaped because they will be | |
350 | followed by the terminating quote. */ | |
351 | for (k = j - 1; k >= 0 && argv[i][k] == '\\'; k--) | |
352 | cmdline_len++; | |
353 | cmdline_len += j; | |
354 | cmdline_len += 3; /* for leading and trailing quotes and space */ | |
355 | } | |
356 | cmdline = xmalloc (cmdline_len); | |
357 | p = cmdline; | |
358 | for (i = 0; argv[i]; i++) | |
359 | { | |
360 | *p++ = '"'; | |
361 | for (j = 0; argv[i][j]; j++) | |
362 | { | |
363 | if (argv[i][j] == '"') | |
364 | { | |
365 | for (k = j - 1; k >= 0 && argv[i][k] == '\\'; k--) | |
366 | *p++ = '\\'; | |
367 | *p++ = '\\'; | |
368 | } | |
369 | *p++ = argv[i][j]; | |
370 | } | |
371 | for (k = j - 1; k >= 0 && argv[i][k] == '\\'; k--) | |
372 | *p++ = '\\'; | |
373 | *p++ = '"'; | |
374 | *p++ = ' '; | |
375 | } | |
376 | p[-1] = '\0'; | |
377 | return cmdline; | |
378 | } | |
379 | ||
380 | static const char *const | |
381 | std_suffixes[] = { | |
382 | ".com", | |
383 | ".exe", | |
384 | ".bat", | |
385 | ".cmd", | |
386 | 0 | |
387 | }; | |
388 | static const char *const | |
389 | no_suffixes[] = { | |
390 | "", | |
391 | 0 | |
392 | }; | |
393 | ||
394 | /* Returns the full path to PROGRAM. If SEARCH is true, look for | |
395 | PROGRAM in each directory in PATH. */ | |
396 | ||
397 | static char * | |
398 | find_executable (const char *program, BOOL search) | |
399 | { | |
400 | char *full_executable; | |
401 | char *e; | |
402 | size_t fe_len; | |
403 | const char *path = 0; | |
404 | const char *const *ext; | |
405 | const char *p, *q; | |
406 | size_t proglen = strlen (program); | |
407 | int has_extension = !!strchr (program, '.'); | |
408 | int has_slash = (strchr (program, '/') || strchr (program, '\\')); | |
409 | HANDLE h; | |
410 | ||
411 | if (has_slash) | |
412 | search = FALSE; | |
413 | ||
414 | if (search) | |
415 | path = getenv ("PATH"); | |
416 | if (!path) | |
417 | path = ""; | |
418 | ||
419 | fe_len = 0; | |
420 | for (p = path; *p; p = q) | |
421 | { | |
422 | q = p; | |
423 | while (*q != ';' && *q != '\0') | |
424 | q++; | |
425 | if ((size_t)(q - p) > fe_len) | |
426 | fe_len = q - p; | |
427 | if (*q == ';') | |
428 | q++; | |
429 | } | |
430 | fe_len = fe_len + 1 + proglen + (has_extension ? 1 : 5); | |
431 | full_executable = xmalloc (fe_len); | |
432 | ||
433 | p = path; | |
434 | do | |
435 | { | |
436 | q = p; | |
437 | while (*q != ';' && *q != '\0') | |
438 | q++; | |
439 | ||
440 | e = full_executable; | |
441 | memcpy (e, p, q - p); | |
442 | e += (q - p); | |
443 | if (q - p) | |
444 | *e++ = '\\'; | |
445 | strcpy (e, program); | |
446 | ||
447 | if (*q == ';') | |
448 | q++; | |
449 | ||
450 | for (e = full_executable; *e; e++) | |
451 | if (*e == '/') | |
452 | *e = '\\'; | |
453 | ||
454 | /* At this point, e points to the terminating NUL character for | |
455 | full_executable. */ | |
456 | for (ext = has_extension ? no_suffixes : std_suffixes; *ext; ext++) | |
457 | { | |
458 | /* Remove any current extension. */ | |
459 | *e = '\0'; | |
460 | /* Add the new one. */ | |
461 | strcat (full_executable, *ext); | |
462 | ||
463 | /* Attempt to open this file. */ | |
464 | h = CreateFile (full_executable, GENERIC_READ, | |
465 | FILE_SHARE_READ | FILE_SHARE_WRITE, | |
466 | 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); | |
467 | if (h != INVALID_HANDLE_VALUE) | |
468 | goto found; | |
469 | } | |
470 | p = q; | |
471 | } | |
472 | while (*p); | |
473 | free (full_executable); | |
474 | return 0; | |
475 | ||
476 | found: | |
477 | CloseHandle (h); | |
478 | return full_executable; | |
479 | } | |
480 | ||
481 | /* Low-level process creation function. */ | |
482 | ||
483 | static long | |
484 | win32_spawn (const char *executable, | |
485 | BOOL search, | |
486 | char *const *argv, | |
487 | DWORD dwCreationFlags, | |
488 | LPSTARTUPINFO si, | |
489 | LPPROCESS_INFORMATION pi) | |
490 | { | |
491 | char *full_executable; | |
492 | char *cmdline; | |
493 | ||
494 | full_executable = NULL; | |
495 | cmdline = NULL; | |
496 | ||
497 | full_executable = find_executable (executable, search); | |
498 | if (!full_executable) | |
499 | goto error; | |
500 | cmdline = argv_to_cmdline (argv); | |
501 | if (!cmdline) | |
502 | goto error; | |
503 | ||
504 | /* Create the child process. */ | |
505 | if (!CreateProcess (full_executable, cmdline, | |
506 | /*lpProcessAttributes=*/NULL, | |
507 | /*lpThreadAttributes=*/NULL, | |
508 | /*bInheritHandles=*/TRUE, | |
509 | dwCreationFlags, | |
510 | /*lpEnvironment=*/NULL, | |
511 | /*lpCurrentDirectory=*/NULL, | |
512 | si, | |
513 | pi)) | |
514 | { | |
515 | free (full_executable); | |
516 | return -1; | |
517 | } | |
518 | ||
519 | /* Clean up. */ | |
520 | CloseHandle (pi->hThread); | |
521 | free (full_executable); | |
522 | ||
523 | return (long) pi->hProcess; | |
524 | ||
525 | error: | |
526 | if (cmdline) | |
527 | free (cmdline); | |
528 | if (full_executable) | |
529 | free (full_executable); | |
530 | return -1; | |
531 | } | |
532 | ||
0d676b85 | 533 | static long |
bd9e7c5c MM |
534 | spawn_script (const char *executable, char *const *argv, |
535 | DWORD dwCreationFlags, | |
536 | LPSTARTUPINFO si, | |
537 | LPPROCESS_INFORMATION pi) | |
0d676b85 CF |
538 | { |
539 | int pid = -1; | |
540 | int save_errno = errno; | |
541 | int fd = _open (executable, _O_RDONLY); | |
542 | ||
543 | if (fd >= 0) | |
544 | { | |
545 | char buf[MAX_PATH + 5]; | |
546 | int len = _read (fd, buf, sizeof (buf) - 1); | |
547 | _close (fd); | |
548 | if (len > 3) | |
549 | { | |
550 | char *eol; | |
551 | buf[len] = '\0'; | |
552 | eol = strchr (buf, '\n'); | |
553 | if (eol && strncmp (buf, "#!", 2) == 0) | |
554 | { | |
555 | char *executable1; | |
556 | const char ** avhere = (const char **) --argv; | |
557 | do | |
558 | *eol = '\0'; | |
559 | while (*--eol == '\r' || *eol == ' ' || *eol == '\t'); | |
560 | for (executable1 = buf + 2; *executable1 == ' ' || *executable1 == '\t'; executable1++) | |
561 | continue; | |
562 | ||
563 | backslashify (executable1); | |
564 | *avhere = executable1; | |
565 | #ifndef USE_MINGW_MSYS | |
566 | executable = strrchr (executable1, '\\') + 1; | |
567 | if (!executable) | |
568 | executable = executable1; | |
bd9e7c5c MM |
569 | pid = win32_spawn (executable, TRUE, argv, |
570 | dwCreationFlags, si, pi); | |
0d676b85 CF |
571 | #else |
572 | if (strchr (executable1, '\\') == NULL) | |
bd9e7c5c MM |
573 | pid = win32_spawn (executable1, TRUE, argv, |
574 | dwCreationFlags, si, pi); | |
0d676b85 | 575 | else if (executable1[0] != '\\') |
bd9e7c5c MM |
576 | pid = win32_spawn (executable1, FALSE, argv, |
577 | dwCreationFlags, si, pi); | |
0d676b85 CF |
578 | else |
579 | { | |
580 | const char *newex = mingw_rootify (executable1); | |
581 | *avhere = newex; | |
bd9e7c5c MM |
582 | pid = win32_spawn (newex, FALSE, argv, |
583 | dwCreationFlags, si, pi); | |
0d676b85 CF |
584 | if (executable1 != newex) |
585 | free ((char *) newex); | |
586 | if (pid < 0) | |
587 | { | |
588 | newex = msys_rootify (executable1); | |
589 | if (newex != executable1) | |
590 | { | |
591 | *avhere = newex; | |
bd9e7c5c MM |
592 | pid = win32_spawn (newex, FALSE, argv, |
593 | dwCreationFlags, si, pi); | |
0d676b85 CF |
594 | free ((char *) newex); |
595 | } | |
596 | } | |
597 | } | |
598 | #endif | |
599 | } | |
600 | } | |
601 | } | |
602 | if (pid < 0) | |
603 | errno = save_errno; | |
604 | return pid; | |
605 | } | |
606 | ||
a584cf65 ILT |
607 | /* Execute a child. */ |
608 | ||
609 | static long | |
610 | pex_win32_exec_child (struct pex_obj *obj ATTRIBUTE_UNUSED, int flags, | |
611 | const char *executable, char * const * argv, | |
612 | int in, int out, int errdes, const char **errmsg, | |
613 | int *err) | |
614 | { | |
a584cf65 | 615 | long pid; |
bd9e7c5c MM |
616 | HANDLE stdin_handle; |
617 | HANDLE stdout_handle; | |
618 | HANDLE stderr_handle; | |
619 | DWORD dwCreationFlags; | |
620 | OSVERSIONINFO version_info; | |
621 | STARTUPINFO si; | |
622 | PROCESS_INFORMATION pi; | |
623 | ||
624 | stdin_handle = INVALID_HANDLE_VALUE; | |
625 | stdout_handle = INVALID_HANDLE_VALUE; | |
626 | stderr_handle = INVALID_HANDLE_VALUE; | |
627 | ||
628 | stdin_handle = (HANDLE) _get_osfhandle (in); | |
629 | stdout_handle = (HANDLE) _get_osfhandle (out); | |
630 | if (!(flags & PEX_STDERR_TO_STDOUT)) | |
631 | stderr_handle = (HANDLE) _get_osfhandle (errdes); | |
632 | else | |
633 | stderr_handle = stdout_handle; | |
634 | ||
635 | /* Determine the version of Windows we are running on. */ | |
636 | version_info.dwOSVersionInfoSize = sizeof (version_info); | |
637 | GetVersionEx (&version_info); | |
638 | if (version_info.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) | |
639 | /* On Windows 95/98/ME the CREATE_NO_WINDOW flag is not | |
640 | supported, so we cannot avoid creating a console window. */ | |
641 | dwCreationFlags = 0; | |
642 | else | |
55d0e5e0 | 643 | { |
bd9e7c5c MM |
644 | HANDLE conout_handle; |
645 | ||
646 | /* Determine whether or not we have an associated console. */ | |
647 | conout_handle = CreateFile("CONOUT$", | |
648 | GENERIC_WRITE, | |
649 | FILE_SHARE_WRITE, | |
650 | /*lpSecurityAttributes=*/NULL, | |
651 | OPEN_EXISTING, | |
652 | FILE_ATTRIBUTE_NORMAL, | |
653 | /*hTemplateFile=*/NULL); | |
654 | if (conout_handle == INVALID_HANDLE_VALUE) | |
655 | /* There is no console associated with this process. Since | |
656 | the child is a console process, the OS would normally | |
657 | create a new console Window for the child. Since we'll be | |
658 | redirecting the child's standard streams, we do not need | |
659 | the console window. */ | |
660 | dwCreationFlags = CREATE_NO_WINDOW; | |
661 | else | |
a584cf65 | 662 | { |
bd9e7c5c MM |
663 | /* There is a console associated with the process, so the OS |
664 | will not create a new console. And, if we use | |
665 | CREATE_NO_WINDOW in this situation, the child will have | |
666 | no associated console. Therefore, if the child's | |
667 | standard streams are connected to the console, the output | |
668 | will be discarded. */ | |
669 | CloseHandle(conout_handle); | |
670 | dwCreationFlags = 0; | |
a584cf65 | 671 | } |
55d0e5e0 ZW |
672 | } |
673 | ||
bd9e7c5c MM |
674 | /* Since the child will be a console process, it will, by default, |
675 | connect standard input/output to its console. However, we want | |
676 | the child to use the handles specifically designated above. In | |
677 | addition, if there is no console (such as when we are running in | |
678 | a Cygwin X window), then we must redirect the child's | |
679 | input/output, as there is no console for the child to use. */ | |
680 | memset (&si, 0, sizeof (si)); | |
681 | si.cb = sizeof (si); | |
682 | si.dwFlags = STARTF_USESTDHANDLES; | |
683 | si.hStdInput = stdin_handle; | |
684 | si.hStdOutput = stdout_handle; | |
685 | si.hStdError = stderr_handle; | |
686 | ||
687 | /* Create the child process. */ | |
688 | pid = win32_spawn (executable, (flags & PEX_SEARCH) != 0, | |
689 | argv, dwCreationFlags, &si, &pi); | |
0d676b85 | 690 | if (pid == -1) |
bd9e7c5c | 691 | pid = spawn_script (executable, argv, dwCreationFlags, &si, &pi); |
a584cf65 | 692 | if (pid == -1) |
55d0e5e0 | 693 | { |
bd9e7c5c MM |
694 | *err = ENOENT; |
695 | *errmsg = "CreateProcess"; | |
55d0e5e0 ZW |
696 | } |
697 | ||
bd9e7c5c MM |
698 | /* Close the standard output and standard error handles in the |
699 | parent. */ | |
700 | if (out != STDOUT_FILENO) | |
701 | obj->funcs->close (obj, out); | |
702 | if (errdes != STDERR_FILENO) | |
703 | obj->funcs->close (obj, errdes); | |
55d0e5e0 ZW |
704 | |
705 | return pid; | |
706 | } | |
707 | ||
a584cf65 ILT |
708 | /* Wait for a child process to complete. MS CRTDLL doesn't return |
709 | enough information in status to decide if the child exited due to a | |
710 | signal or not, rather it simply returns an integer with the exit | |
711 | code of the child; eg., if the child exited with an abort() call | |
712 | and didn't have a handler for SIGABRT, it simply returns with | |
713 | status == 3. We fix the status code to conform to the usual WIF* | |
714 | macros. Note that WIFSIGNALED will never be true under CRTDLL. */ | |
715 | ||
716 | static int | |
717 | pex_win32_wait (struct pex_obj *obj ATTRIBUTE_UNUSED, long pid, | |
718 | int *status, struct pex_time *time, int done ATTRIBUTE_UNUSED, | |
719 | const char **errmsg, int *err) | |
55d0e5e0 | 720 | { |
bd9e7c5c MM |
721 | DWORD termstat; |
722 | HANDLE h; | |
55d0e5e0 | 723 | |
a584cf65 ILT |
724 | if (time != NULL) |
725 | memset (time, 0, sizeof *time); | |
726 | ||
bd9e7c5c MM |
727 | h = (HANDLE) pid; |
728 | ||
a584cf65 ILT |
729 | /* FIXME: If done is non-zero, we should probably try to kill the |
730 | process. */ | |
bd9e7c5c | 731 | if (WaitForSingleObject (h, INFINITE) != WAIT_OBJECT_0) |
a584cf65 | 732 | { |
bd9e7c5c MM |
733 | CloseHandle (h); |
734 | *err = ECHILD; | |
735 | *errmsg = "WaitForSingleObject"; | |
a584cf65 ILT |
736 | return -1; |
737 | } | |
55d0e5e0 | 738 | |
bd9e7c5c MM |
739 | GetExitCodeProcess (h, &termstat); |
740 | CloseHandle (h); | |
741 | ||
742 | /* A value of 3 indicates that the child caught a signal, but not | |
743 | which one. Since only SIGABRT, SIGFPE and SIGINT do anything, we | |
744 | report SIGABRT. */ | |
55d0e5e0 ZW |
745 | if (termstat == 3) |
746 | *status = SIGABRT; | |
747 | else | |
bd9e7c5c | 748 | *status = (termstat & 0xff) << 8; |
55d0e5e0 | 749 | |
a584cf65 ILT |
750 | return 0; |
751 | } | |
752 | ||
753 | /* Create a pipe. */ | |
754 | ||
755 | static int | |
756 | pex_win32_pipe (struct pex_obj *obj ATTRIBUTE_UNUSED, int *p, | |
757 | int binary) | |
758 | { | |
759 | return _pipe (p, 256, binary ? _O_BINARY : _O_TEXT); | |
760 | } | |
761 | ||
762 | /* Get a FILE pointer to read from a file descriptor. */ | |
763 | ||
764 | static FILE * | |
765 | pex_win32_fdopenr (struct pex_obj *obj ATTRIBUTE_UNUSED, int fd, | |
766 | int binary) | |
767 | { | |
768 | return fdopen (fd, binary ? "rb" : "r"); | |
55d0e5e0 | 769 | } |
0d676b85 | 770 | |
8eff378c JB |
771 | static FILE * |
772 | pex_win32_fdopenw (struct pex_obj *obj ATTRIBUTE_UNUSED, int fd, | |
773 | int binary) | |
774 | { | |
775 | HANDLE h = (HANDLE) _get_osfhandle (fd); | |
776 | if (h == INVALID_HANDLE_VALUE) | |
777 | return NULL; | |
778 | if (! SetHandleInformation (h, HANDLE_FLAG_INHERIT, 0)) | |
779 | return NULL; | |
780 | return fdopen (fd, binary ? "wb" : "w"); | |
781 | } | |
782 | ||
0d676b85 CF |
783 | #ifdef MAIN |
784 | #include <stdio.h> | |
785 | ||
786 | int | |
787 | main (int argc ATTRIBUTE_UNUSED, char **argv) | |
788 | { | |
789 | char const *errmsg; | |
790 | int err; | |
791 | argv++; | |
792 | printf ("%ld\n", pex_win32_exec_child (NULL, PEX_SEARCH, argv[0], argv, 0, 1, 2, &errmsg, &err)); | |
793 | exit (0); | |
794 | } | |
795 | #endif |