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> |
5a17353c DD |
44 | |
45 | /* mingw32 headers may not define the following. */ | |
46 | ||
47 | #ifndef _P_WAIT | |
48 | # define _P_WAIT 0 | |
49 | # define _P_NOWAIT 1 | |
50 | # define _P_OVERLAY 2 | |
51 | # define _P_NOWAITO 3 | |
52 | # define _P_DETACH 4 | |
53 | ||
54 | # define WAIT_CHILD 0 | |
55 | # define WAIT_GRANDCHILD 1 | |
56 | #endif | |
57 | ||
f59e96e0 DD |
58 | #define MINGW_NAME "Minimalist GNU for Windows" |
59 | #define MINGW_NAME_LEN (sizeof(MINGW_NAME) - 1) | |
60 | ||
61 | /* Ensure that the executable pathname uses Win32 backslashes. This | |
62 | is not necessary on NT, but on W9x, forward slashes causes | |
63 | failure of spawn* and exec* functions (and probably any function | |
64 | that calls CreateProcess) *iff* the executable pathname (argv[0]) | |
65 | is a quoted string. And quoting is necessary in case a pathname | |
66 | contains embedded white space. You can't win. */ | |
67 | static void | |
68 | backslashify (char *s) | |
69 | { | |
70 | while ((s = strchr (s, '/')) != NULL) | |
71 | *s = '\\'; | |
72 | return; | |
73 | } | |
74 | ||
5a17353c DD |
75 | /* This is a kludge to get around the Microsoft C spawn functions' propensity |
76 | to remove the outermost set of double quotes from all arguments. */ | |
77 | ||
78 | static const char * const * | |
b109e79a | 79 | fix_argv (char * const *argvec) |
5a17353c | 80 | { |
b109e79a | 81 | char **argv; |
5a17353c | 82 | int i; |
b109e79a ILT |
83 | char *command0; |
84 | ||
85 | /* See whether we need to change anything. */ | |
86 | for (command0 = argvec[0]; *command0 != '\0'; command0++) | |
87 | if (*command0 == '/') | |
88 | break; | |
89 | if (*command0 == '\0') | |
90 | { | |
91 | for (i = 1; argvec[i] != NULL; i++) | |
92 | if (strpbrk (argvec[i], "\" \t") != NULL) | |
93 | break; | |
94 | ||
95 | if (argvec[i] == NULL) | |
96 | return (const char * const *) argvec; | |
97 | } | |
98 | ||
99 | for (i = 0; argvec[i] != NULL; i++) | |
100 | ; | |
f59e96e0 DD |
101 | argv = XNEWVEC (char *, i + 2); |
102 | ||
103 | argv++; /* Leave space at the beginning of argv | |
104 | for potential #! handling */ | |
105 | ||
b109e79a ILT |
106 | for (i = 0; argvec[i] != NULL; i++) |
107 | argv[i] = xstrdup (argvec[i]); | |
108 | argv[i] = NULL; | |
5a17353c | 109 | |
f59e96e0 | 110 | backslashify (argv[0]); |
b109e79a ILT |
111 | |
112 | for (i = 1; argv[i] != 0; i++) | |
5a17353c DD |
113 | { |
114 | int len, j; | |
115 | char *temp, *newtemp; | |
116 | ||
b109e79a | 117 | temp = argv[i]; |
5a17353c DD |
118 | len = strlen (temp); |
119 | for (j = 0; j < len; j++) | |
120 | { | |
121 | if (temp[j] == '"') | |
122 | { | |
abf6a75b | 123 | newtemp = XNEWVEC (char, len + 2); |
5a17353c DD |
124 | strncpy (newtemp, temp, j); |
125 | newtemp [j] = '\\'; | |
126 | strncpy (&newtemp [j+1], &temp [j], len-j); | |
127 | newtemp [len+1] = 0; | |
128 | temp = newtemp; | |
129 | len++; | |
130 | j++; | |
131 | } | |
132 | } | |
133 | ||
b109e79a ILT |
134 | if (argv[i] != temp) |
135 | { | |
136 | free (argv[i]); | |
137 | argv[i] = temp; | |
138 | } | |
139 | } | |
5a17353c | 140 | |
b109e79a | 141 | for (i = 0; argv[i] != 0; i++) |
5a17353c | 142 | { |
b109e79a | 143 | if (strpbrk (argv[i], " \t")) |
5a17353c DD |
144 | { |
145 | int len, trailing_backslash; | |
146 | char *temp; | |
147 | ||
b109e79a | 148 | len = strlen (argv[i]); |
5a17353c DD |
149 | trailing_backslash = 0; |
150 | ||
151 | /* There is an added complication when an arg with embedded white | |
152 | space ends in a backslash (such as in the case of -iprefix arg | |
153 | passed to cpp). The resulting quoted strings gets misinterpreted | |
154 | by the command interpreter -- it thinks that the ending quote | |
f59e96e0 | 155 | is escaped by the trailing backslash and things get confused. |
5a17353c DD |
156 | We handle this case by escaping the trailing backslash, provided |
157 | it was not escaped in the first place. */ | |
f59e96e0 DD |
158 | if (len > 1 |
159 | && argv[i][len-1] == '\\' | |
b109e79a | 160 | && argv[i][len-2] != '\\') |
5a17353c DD |
161 | { |
162 | trailing_backslash = 1; | |
163 | ++len; /* to escape the final backslash. */ | |
164 | } | |
165 | ||
166 | len += 2; /* and for the enclosing quotes. */ | |
167 | ||
abf6a75b | 168 | temp = XNEWVEC (char, len + 1); |
5a17353c | 169 | temp[0] = '"'; |
b109e79a | 170 | strcpy (temp + 1, argv[i]); |
5a17353c | 171 | if (trailing_backslash) |
b109e79a ILT |
172 | temp[len - 2] = '\\'; |
173 | temp[len - 1] = '"'; | |
5a17353c DD |
174 | temp[len] = '\0'; |
175 | ||
b109e79a ILT |
176 | free (argv[i]); |
177 | argv[i] = temp; | |
5a17353c DD |
178 | } |
179 | } | |
180 | ||
b109e79a | 181 | return (const char * const *) argv; |
5a17353c DD |
182 | } |
183 | ||
b109e79a ILT |
184 | static int pex_win32_open_read (struct pex_obj *, const char *, int); |
185 | static int pex_win32_open_write (struct pex_obj *, const char *, int); | |
186 | static long pex_win32_exec_child (struct pex_obj *, int, const char *, | |
187 | char * const *, int, int, int, | |
188 | const char **, int *); | |
189 | static int pex_win32_close (struct pex_obj *, int); | |
190 | static int pex_win32_wait (struct pex_obj *, long, int *, | |
191 | struct pex_time *, int, const char **, int *); | |
192 | static int pex_win32_pipe (struct pex_obj *, int *, int); | |
193 | static FILE *pex_win32_fdopenr (struct pex_obj *, int, int); | |
194 | ||
195 | /* The list of functions we pass to the common routines. */ | |
196 | ||
197 | const struct pex_funcs funcs = | |
5a17353c | 198 | { |
b109e79a ILT |
199 | pex_win32_open_read, |
200 | pex_win32_open_write, | |
201 | pex_win32_exec_child, | |
202 | pex_win32_close, | |
203 | pex_win32_wait, | |
204 | pex_win32_pipe, | |
205 | pex_win32_fdopenr, | |
206 | NULL /* cleanup */ | |
207 | }; | |
208 | ||
209 | /* Return a newly initialized pex_obj structure. */ | |
210 | ||
211 | struct pex_obj * | |
212 | pex_init (int flags, const char *pname, const char *tempbase) | |
213 | { | |
214 | return pex_init_common (flags, pname, tempbase, &funcs); | |
215 | } | |
216 | ||
217 | /* Open a file for reading. */ | |
218 | ||
219 | static int | |
220 | pex_win32_open_read (struct pex_obj *obj ATTRIBUTE_UNUSED, const char *name, | |
221 | int binary) | |
222 | { | |
223 | return _open (name, _O_RDONLY | (binary ? _O_BINARY : _O_TEXT)); | |
224 | } | |
225 | ||
226 | /* Open a file for writing. */ | |
227 | ||
228 | static int | |
229 | pex_win32_open_write (struct pex_obj *obj ATTRIBUTE_UNUSED, const char *name, | |
230 | int binary) | |
231 | { | |
232 | /* Note that we can't use O_EXCL here because gcc may have already | |
233 | created the temporary file via make_temp_file. */ | |
234 | return _open (name, | |
235 | (_O_WRONLY | _O_CREAT | _O_TRUNC | |
236 | | (binary ? _O_BINARY : _O_TEXT)), | |
237 | _S_IREAD | _S_IWRITE); | |
238 | } | |
239 | ||
240 | /* Close a file. */ | |
241 | ||
242 | static int | |
243 | pex_win32_close (struct pex_obj *obj ATTRIBUTE_UNUSED, int fd) | |
244 | { | |
245 | return _close (fd); | |
246 | } | |
247 | ||
f59e96e0 DD |
248 | #ifdef USE_MINGW_MSYS |
249 | static const char *mingw_keys[] = {"SOFTWARE", "Microsoft", "Windows", "CurrentVersion", "Uninstall", NULL}; | |
250 | ||
251 | /* Tack the executable on the end of a (possibly slash terminated) buffer | |
252 | and convert everything to \. */ | |
253 | static const char * | |
254 | tack_on_executable (char *buf, const char *executable) | |
255 | { | |
256 | char *p = strchr (buf, '\0'); | |
257 | if (p > buf && (p[-1] == '\\' || p[-1] == '/')) | |
258 | p[-1] = '\0'; | |
259 | backslashify (strcat (buf, executable)); | |
260 | return buf; | |
261 | } | |
262 | ||
263 | /* Walk down a registry hierarchy until the end. Return the key. */ | |
264 | static HKEY | |
265 | openkey (HKEY hStart, const char *keys[]) | |
266 | { | |
267 | HKEY hKey, hTmp; | |
268 | for (hKey = hStart; *keys; keys++) | |
269 | { | |
270 | LONG res; | |
271 | hTmp = hKey; | |
272 | res = RegOpenKey (hTmp, *keys, &hKey); | |
273 | ||
274 | if (hTmp != HKEY_LOCAL_MACHINE) | |
275 | RegCloseKey (hTmp); | |
276 | ||
277 | if (res != ERROR_SUCCESS) | |
278 | return NULL; | |
279 | } | |
280 | return hKey; | |
281 | } | |
282 | ||
283 | /* Return the "mingw root" as derived from the mingw uninstall information. */ | |
284 | static const char * | |
285 | mingw_rootify (const char *executable) | |
286 | { | |
287 | HKEY hKey, hTmp; | |
288 | DWORD maxlen; | |
289 | char *namebuf, *foundbuf; | |
290 | DWORD i; | |
291 | LONG res; | |
292 | ||
293 | /* Open the uninstall "directory". */ | |
294 | hKey = openkey (HKEY_LOCAL_MACHINE, mingw_keys); | |
295 | ||
296 | /* Not found. */ | |
297 | if (!hKey) | |
298 | return executable; | |
299 | ||
300 | /* Need to enumerate all of the keys here looking for one the most recent | |
301 | one for MinGW. */ | |
302 | if (RegQueryInfoKey (hKey, NULL, NULL, NULL, NULL, &maxlen, NULL, NULL, | |
303 | NULL, NULL, NULL, NULL) != ERROR_SUCCESS) | |
304 | { | |
305 | RegCloseKey (hKey); | |
306 | return executable; | |
307 | } | |
308 | namebuf = XNEWVEC (char, ++maxlen); | |
309 | foundbuf = XNEWVEC (char, maxlen); | |
310 | foundbuf[0] = '\0'; | |
311 | if (!namebuf || !foundbuf) | |
312 | { | |
313 | RegCloseKey (hKey); | |
314 | if (namebuf) | |
315 | free (namebuf); | |
316 | if (foundbuf) | |
317 | free (foundbuf); | |
318 | return executable; | |
319 | } | |
320 | ||
321 | /* Look through all of the keys for one that begins with Minimal GNU... | |
322 | Try to get the latest version by doing a string compare although that | |
323 | string never really works with version number sorting. */ | |
324 | for (i = 0; RegEnumKey (hKey, i, namebuf, maxlen) == ERROR_SUCCESS; i++) | |
325 | { | |
326 | int match = strcasecmp (namebuf, MINGW_NAME); | |
327 | if (match < 0) | |
328 | continue; | |
329 | if (match > 0 && strncasecmp (namebuf, MINGW_NAME, MINGW_NAME_LEN) > 0) | |
330 | continue; | |
331 | if (strcasecmp (namebuf, foundbuf) > 0) | |
332 | strcpy (foundbuf, namebuf); | |
333 | } | |
334 | free (namebuf); | |
335 | ||
336 | /* If foundbuf is empty, we didn't find anything. Punt. */ | |
337 | if (!foundbuf[0]) | |
338 | { | |
339 | free (foundbuf); | |
340 | RegCloseKey (hKey); | |
341 | return executable; | |
342 | } | |
343 | ||
344 | /* Open the key that we wanted */ | |
345 | res = RegOpenKey (hKey, foundbuf, &hTmp); | |
346 | RegCloseKey (hKey); | |
347 | free (foundbuf); | |
348 | ||
349 | /* Don't know why this would fail, but you gotta check */ | |
350 | if (res != ERROR_SUCCESS) | |
351 | return executable; | |
352 | ||
353 | maxlen = 0; | |
354 | /* Get the length of the value pointed to by InstallLocation */ | |
355 | if (RegQueryValueEx (hTmp, "InstallLocation", 0, NULL, NULL, | |
356 | &maxlen) != ERROR_SUCCESS || maxlen == 0) | |
357 | { | |
358 | RegCloseKey (hTmp); | |
359 | return executable; | |
360 | } | |
361 | ||
362 | /* Allocate space for the install location */ | |
363 | foundbuf = XNEWVEC (char, maxlen + strlen (executable)); | |
364 | if (!foundbuf) | |
365 | { | |
366 | free (foundbuf); | |
367 | RegCloseKey (hTmp); | |
368 | } | |
369 | ||
370 | /* Read the install location into the buffer */ | |
371 | res = RegQueryValueEx (hTmp, "InstallLocation", 0, NULL, (LPBYTE) foundbuf, | |
372 | &maxlen); | |
373 | RegCloseKey (hTmp); | |
374 | if (res != ERROR_SUCCESS) | |
375 | { | |
376 | free (foundbuf); | |
377 | return executable; | |
378 | } | |
379 | ||
380 | /* Concatenate the install location and the executable, turn all slashes | |
381 | to backslashes, and return that. */ | |
382 | return tack_on_executable (foundbuf, executable); | |
383 | } | |
384 | ||
385 | /* Read the install location of msys from it's installation file and | |
386 | rootify the executable based on that. */ | |
387 | static const char * | |
388 | msys_rootify (const char *executable) | |
389 | { | |
390 | size_t bufsize = 64; | |
391 | size_t execlen = strlen (executable) + 1; | |
392 | char *buf; | |
393 | DWORD res = 0; | |
394 | for (;;) | |
395 | { | |
396 | buf = XNEWVEC (char, bufsize + execlen); | |
397 | if (!buf) | |
398 | break; | |
399 | res = GetPrivateProfileString ("InstallSettings", "InstallPath", NULL, | |
400 | buf, bufsize, "msys.ini"); | |
401 | if (!res) | |
402 | break; | |
403 | if (strlen (buf) < bufsize) | |
404 | break; | |
405 | res = 0; | |
406 | free (buf); | |
407 | bufsize *= 2; | |
408 | if (bufsize > 65536) | |
409 | { | |
410 | buf = NULL; | |
411 | break; | |
412 | } | |
413 | } | |
414 | ||
415 | if (res) | |
416 | return tack_on_executable (buf, executable); | |
417 | ||
418 | /* failed */ | |
419 | if (buf) | |
420 | free (buf); | |
421 | return executable; | |
422 | } | |
423 | #endif | |
424 | ||
425 | static long | |
426 | spawn_script (const char *executable, const char * const * argv) | |
427 | { | |
428 | int pid = -1; | |
429 | int save_errno = errno; | |
430 | int fd = _open (executable, _O_RDONLY); | |
431 | ||
432 | if (fd >= 0) | |
433 | { | |
434 | char buf[MAX_PATH + 5]; | |
435 | int len = _read (fd, buf, sizeof (buf) - 1); | |
436 | _close (fd); | |
437 | if (len > 3) | |
438 | { | |
439 | char *eol; | |
440 | buf[len] = '\0'; | |
441 | eol = strchr (buf, '\n'); | |
442 | if (eol && strncmp (buf, "#!", 2) == 0) | |
443 | { | |
444 | char *executable1; | |
445 | const char ** avhere = (const char **) --argv; | |
446 | do | |
447 | *eol = '\0'; | |
448 | while (*--eol == '\r' || *eol == ' ' || *eol == '\t'); | |
449 | for (executable1 = buf + 2; *executable1 == ' ' || *executable1 == '\t'; executable1++) | |
450 | continue; | |
451 | ||
452 | backslashify (executable1); | |
453 | *avhere = executable1; | |
454 | #ifndef USE_MINGW_MSYS | |
455 | executable = strrchr (executable1, '\\') + 1; | |
456 | if (!executable) | |
457 | executable = executable1; | |
458 | pid = _spawnvp (_P_NOWAIT, executable, argv); | |
459 | #else | |
460 | if (strchr (executable1, '\\') == NULL) | |
461 | pid = _spawnvp (_P_NOWAIT, executable1, argv); | |
462 | else if (executable1[0] != '\\') | |
463 | pid = _spawnv (_P_NOWAIT, executable1, argv); | |
464 | else | |
465 | { | |
466 | const char *newex = mingw_rootify (executable1); | |
467 | *avhere = newex; | |
468 | pid = _spawnv (_P_NOWAIT, newex, argv); | |
469 | if (executable1 != newex) | |
470 | free ((char *) newex); | |
471 | if (pid < 0) | |
472 | { | |
473 | newex = msys_rootify (executable1); | |
474 | if (newex != executable1) | |
475 | { | |
476 | *avhere = newex; | |
477 | pid = _spawnv (_P_NOWAIT, newex, argv); | |
478 | free ((char *) newex); | |
479 | } | |
480 | } | |
481 | } | |
482 | #endif | |
483 | } | |
484 | } | |
485 | } | |
486 | if (pid < 0) | |
487 | errno = save_errno; | |
488 | return pid; | |
489 | } | |
490 | ||
b109e79a ILT |
491 | /* Execute a child. */ |
492 | ||
493 | static long | |
494 | pex_win32_exec_child (struct pex_obj *obj ATTRIBUTE_UNUSED, int flags, | |
495 | const char *executable, char * const * argv, | |
496 | int in, int out, int errdes, const char **errmsg, | |
497 | int *err) | |
498 | { | |
499 | int org_in, org_out, org_errdes; | |
500 | long pid; | |
f59e96e0 | 501 | const char * const * newargv; |
b109e79a ILT |
502 | |
503 | org_in = -1; | |
504 | org_out = -1; | |
505 | org_errdes = -1; | |
506 | ||
507 | if (in != STDIN_FILE_NO) | |
5a17353c | 508 | { |
b109e79a ILT |
509 | org_in = _dup (STDIN_FILE_NO); |
510 | if (org_in < 0) | |
511 | { | |
512 | *err = errno; | |
513 | *errmsg = "_dup"; | |
514 | return -1; | |
515 | } | |
516 | if (_dup2 (in, STDIN_FILE_NO) < 0) | |
517 | { | |
518 | *err = errno; | |
519 | *errmsg = "_dup2"; | |
520 | return -1; | |
521 | } | |
522 | if (_close (in) < 0) | |
5a17353c | 523 | { |
b109e79a ILT |
524 | *err = errno; |
525 | *errmsg = "_close"; | |
5a17353c DD |
526 | return -1; |
527 | } | |
5a17353c | 528 | } |
b109e79a ILT |
529 | |
530 | if (out != STDOUT_FILE_NO) | |
5a17353c | 531 | { |
b109e79a ILT |
532 | org_out = _dup (STDOUT_FILE_NO); |
533 | if (org_out < 0) | |
534 | { | |
535 | *err = errno; | |
536 | *errmsg = "_dup"; | |
537 | return -1; | |
538 | } | |
539 | if (_dup2 (out, STDOUT_FILE_NO) < 0) | |
540 | { | |
541 | *err = errno; | |
542 | *errmsg = "_dup2"; | |
543 | return -1; | |
544 | } | |
545 | if (_close (out) < 0) | |
546 | { | |
547 | *err = errno; | |
548 | *errmsg = "_close"; | |
549 | return -1; | |
550 | } | |
5a17353c DD |
551 | } |
552 | ||
b109e79a ILT |
553 | if (errdes != STDERR_FILE_NO |
554 | || (flags & PEX_STDERR_TO_STDOUT) != 0) | |
5a17353c | 555 | { |
b109e79a ILT |
556 | org_errdes = _dup (STDERR_FILE_NO); |
557 | if (org_errdes < 0) | |
558 | { | |
559 | *err = errno; | |
560 | *errmsg = "_dup"; | |
561 | return -1; | |
562 | } | |
563 | if (_dup2 ((flags & PEX_STDERR_TO_STDOUT) != 0 ? STDOUT_FILE_NO : errdes, | |
564 | STDERR_FILE_NO) < 0) | |
565 | { | |
566 | *err = errno; | |
567 | *errmsg = "_dup2"; | |
568 | return -1; | |
569 | } | |
570 | if (errdes != STDERR_FILE_NO) | |
571 | { | |
572 | if (_close (errdes) < 0) | |
573 | { | |
574 | *err = errno; | |
575 | *errmsg = "_close"; | |
576 | return -1; | |
577 | } | |
578 | } | |
5a17353c DD |
579 | } |
580 | ||
f59e96e0 | 581 | newargv = fix_argv (argv); |
b109e79a | 582 | pid = (((flags & PEX_SEARCH) != 0 ? _spawnvp : _spawnv) |
f59e96e0 DD |
583 | (_P_NOWAIT, executable, newargv)); |
584 | ||
585 | if (pid == -1) | |
586 | pid = spawn_script (executable, newargv); | |
b109e79a ILT |
587 | |
588 | if (pid == -1) | |
5a17353c | 589 | { |
b109e79a ILT |
590 | *err = errno; |
591 | *errmsg = ((flags & PEX_SEARCH) != 0) ? "_spawnvp" : "_spawnv"; | |
5a17353c DD |
592 | } |
593 | ||
b109e79a | 594 | if (in != STDIN_FILE_NO) |
5a17353c | 595 | { |
b109e79a ILT |
596 | if (_dup2 (org_in, STDIN_FILE_NO) < 0) |
597 | { | |
598 | *err = errno; | |
599 | *errmsg = "_dup2"; | |
600 | return -1; | |
601 | } | |
602 | if (_close (org_in) < 0) | |
603 | { | |
604 | *err = errno; | |
605 | *errmsg = "_close"; | |
606 | return -1; | |
607 | } | |
5a17353c DD |
608 | } |
609 | ||
b109e79a | 610 | if (out != STDOUT_FILE_NO) |
5a17353c | 611 | { |
b109e79a ILT |
612 | if (_dup2 (org_out, STDOUT_FILE_NO) < 0) |
613 | { | |
614 | *err = errno; | |
615 | *errmsg = "_dup2"; | |
616 | return -1; | |
617 | } | |
618 | if (_close (org_out) < 0) | |
619 | { | |
620 | *err = errno; | |
621 | *errmsg = "_close"; | |
622 | return -1; | |
623 | } | |
5a17353c DD |
624 | } |
625 | ||
b109e79a ILT |
626 | if (errdes != STDERR_FILE_NO |
627 | || (flags & PEX_STDERR_TO_STDOUT) != 0) | |
5a17353c | 628 | { |
b109e79a ILT |
629 | if (_dup2 (org_errdes, STDERR_FILE_NO) < 0) |
630 | { | |
631 | *err = errno; | |
632 | *errmsg = "_dup2"; | |
633 | return -1; | |
634 | } | |
635 | if (_close (org_errdes) < 0) | |
636 | { | |
637 | *err = errno; | |
638 | *errmsg = "_close"; | |
639 | return -1; | |
640 | } | |
5a17353c DD |
641 | } |
642 | ||
643 | return pid; | |
644 | } | |
645 | ||
b109e79a ILT |
646 | /* Wait for a child process to complete. MS CRTDLL doesn't return |
647 | enough information in status to decide if the child exited due to a | |
648 | signal or not, rather it simply returns an integer with the exit | |
649 | code of the child; eg., if the child exited with an abort() call | |
650 | and didn't have a handler for SIGABRT, it simply returns with | |
651 | status == 3. We fix the status code to conform to the usual WIF* | |
652 | macros. Note that WIFSIGNALED will never be true under CRTDLL. */ | |
653 | ||
654 | static int | |
655 | pex_win32_wait (struct pex_obj *obj ATTRIBUTE_UNUSED, long pid, | |
656 | int *status, struct pex_time *time, int done ATTRIBUTE_UNUSED, | |
657 | const char **errmsg, int *err) | |
5a17353c DD |
658 | { |
659 | int termstat; | |
660 | ||
b109e79a ILT |
661 | if (time != NULL) |
662 | memset (time, 0, sizeof *time); | |
663 | ||
664 | /* FIXME: If done is non-zero, we should probably try to kill the | |
665 | process. */ | |
666 | ||
667 | if (_cwait (&termstat, pid, WAIT_CHILD) < 0) | |
668 | { | |
669 | *err = errno; | |
670 | *errmsg = "_cwait"; | |
671 | return -1; | |
672 | } | |
5a17353c | 673 | |
b109e79a ILT |
674 | /* cwait returns the child process exit code in termstat. A value |
675 | of 3 indicates that the child caught a signal, but not which one. | |
676 | Since only SIGABRT, SIGFPE and SIGINT do anything, we report | |
677 | SIGABRT. */ | |
5a17353c | 678 | |
5a17353c DD |
679 | if (termstat == 3) |
680 | *status = SIGABRT; | |
681 | else | |
b109e79a | 682 | *status = ((termstat & 0xff) << 8); |
5a17353c | 683 | |
b109e79a ILT |
684 | return 0; |
685 | } | |
686 | ||
687 | /* Create a pipe. */ | |
688 | ||
689 | static int | |
690 | pex_win32_pipe (struct pex_obj *obj ATTRIBUTE_UNUSED, int *p, | |
691 | int binary) | |
692 | { | |
693 | return _pipe (p, 256, binary ? _O_BINARY : _O_TEXT); | |
694 | } | |
695 | ||
696 | /* Get a FILE pointer to read from a file descriptor. */ | |
697 | ||
698 | static FILE * | |
699 | pex_win32_fdopenr (struct pex_obj *obj ATTRIBUTE_UNUSED, int fd, | |
700 | int binary) | |
701 | { | |
702 | return fdopen (fd, binary ? "rb" : "r"); | |
5a17353c | 703 | } |
f59e96e0 DD |
704 | |
705 | #ifdef MAIN | |
706 | #include <stdio.h> | |
707 | ||
708 | int | |
709 | main (int argc ATTRIBUTE_UNUSED, char **argv) | |
710 | { | |
711 | char const *errmsg; | |
712 | int err; | |
713 | argv++; | |
714 | printf ("%ld\n", pex_win32_exec_child (NULL, PEX_SEARCH, argv[0], argv, 0, 1, 2, &errmsg, &err)); | |
715 | exit (0); | |
716 | } | |
717 | #endif |