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The monotouch_runtime profile needs the DISABLE_COM flag too.
[mono-project.git] / mono / io-layer / processes.c
blob6cf55aca06838bd8a93e63e8aecd2be11a1b7e6c
1 /*
2 * processes.c: Process handles
3 *
4 * Author:
5 * Dick Porter (dick@ximian.com)
6 *
7 * (C) 2002-2011 Novell, Inc.
8 * Copyright 2011 Xamarin Inc
9 */
10
11 #include <config.h>
12 #include <glib.h>
13 #include <stdio.h>
14 #include <string.h>
15 #include <pthread.h>
16 #include <sched.h>
17 #include <sys/time.h>
18 #include <errno.h>
19 #include <sys/types.h>
20 #include <sys/stat.h>
21 #include <unistd.h>
22 #include <signal.h>
23 #include <sys/wait.h>
24 #include <sys/time.h>
25 #include <sys/resource.h>
26 #include <fcntl.h>
27 #include <sys/param.h>
28 #include <ctype.h>
29
30 #ifdef HAVE_SYS_MKDEV_H
31 #include <sys/mkdev.h>
32 #endif
33
34 /* sys/resource.h (for rusage) is required when using osx 10.3 (but not 10.4) */
35 #ifdef __APPLE__
36 #include <TargetConditionals.h>
37 #include <sys/resource.h>
38 #ifdef HAVE_LIBPROC_H
39 /* proc_name */
40 #include <libproc.h>
41 #endif
42 #endif
43
44 #if defined(PLATFORM_MACOSX) || defined(__OpenBSD__)
45 #include <sys/proc.h>
46 #include <sys/sysctl.h>
47 # if !defined(__OpenBSD__)
48 # include <sys/utsname.h>
49 # endif
50 #endif
51
52 #ifdef PLATFORM_SOLARIS
53 /* procfs.h cannot be included if this define is set, but it seems to work fine if it is undefined */
54 #if _FILE_OFFSET_BITS == 64
55 #undef _FILE_OFFSET_BITS
56 #include <procfs.h>
57 #define _FILE_OFFSET_BITS 64
58 #else
59 #include <procfs.h>
60 #endif
61 #endif
62
63 #ifdef __HAIKU__
64 #include <KernelKit.h>
65 #endif
66
67 #include <mono/io-layer/wapi.h>
68 #include <mono/io-layer/wapi-private.h>
69 #include <mono/io-layer/handles-private.h>
70 #include <mono/io-layer/misc-private.h>
71 #include <mono/io-layer/process-private.h>
72 #include <mono/io-layer/threads.h>
73 #include <mono/utils/strenc.h>
74 #include <mono/utils/mono-path.h>
75 #include <mono/io-layer/timefuncs-private.h>
76 #include <mono/utils/mono-time.h>
77 #include <mono/utils/mono-membar.h>
78 #include <mono/utils/mono-mutex.h>
79 #include <mono/utils/mono-signal-handler.h>
80
81 /* The process' environment strings */
82 #if defined(__APPLE__) && !defined (__arm__)
83 /* Apple defines this in crt_externs.h but doesn't provide that header for
84 * arm-apple-darwin9. We'll manually define the symbol on Apple as it does
85 * in fact exist on all implementations (so far)
86 */
87 gchar ***_NSGetEnviron(void);
88 #define environ (*_NSGetEnviron())
89 #else
90 extern char **environ;
91 #endif
92
93 #if 0
94 #define DEBUG(...) g_message(__VA_ARGS__)
95 #define DEBUG_ENABLED 1
96 #else
97 #define DEBUG(...)
98 #endif
99
100 static guint32 process_wait (gpointer handle, guint32 timeout, gboolean alertable);
101 static void process_close (gpointer handle, gpointer data);
102 static gboolean is_pid_valid (pid_t pid);
103
104 #if !defined(__OpenBSD__)
105 static FILE *
106 open_process_map (int pid, const char *mode);
107 #endif
108
109 struct _WapiHandleOps _wapi_process_ops = {
110 process_close, /* close_shared */
111 NULL, /* signal */
112 NULL, /* own */
113 NULL, /* is_owned */
114 process_wait, /* special_wait */
115 NULL /* prewait */
116 };
117
118 #if HAVE_SIGACTION
119 static struct sigaction previous_chld_sa;
120 #endif
121 static mono_once_t process_sig_chld_once = MONO_ONCE_INIT;
122 static void process_add_sigchld_handler (void);
123
124 /* The signal-safe logic to use mono_processes goes like this:
125 * - The list must be safe to traverse for the signal handler at all times.
126 * It's safe to: prepend an entry (which is a single store to 'mono_processes'),
127 * unlink an entry (assuming the unlinked entry isn't freed and doesn't
128 * change its 'next' pointer so that it can still be traversed).
129 * When cleaning up we first unlink an entry, then we verify that
130 * the read lock isn't locked. Then we can free the entry, since
131 * we know that nobody is using the old version of the list (including
132 * the unlinked entry).
133 * We also need to lock when adding and cleaning up so that those two
134 * operations don't mess with eachother. (This lock is not used in the
135 * signal handler)
136 */
137 static struct MonoProcess *mono_processes = NULL;
138 static volatile gint32 mono_processes_read_lock = 0;
139 static volatile gint32 mono_processes_cleaning_up = 0;
140 static mono_mutex_t mono_processes_mutex;
141 static void mono_processes_cleanup (void);
142
143 static mono_once_t process_current_once=MONO_ONCE_INIT;
144 static gpointer current_process=NULL;
145
146 static mono_once_t process_ops_once=MONO_ONCE_INIT;
147
148 static void process_ops_init (void)
149 {
150 _wapi_handle_register_capabilities (WAPI_HANDLE_PROCESS,
151 WAPI_HANDLE_CAP_WAIT |
152 WAPI_HANDLE_CAP_SPECIAL_WAIT);
153 }
154
155
156 /* Check if a pid is valid - i.e. if a process exists with this pid. */
157 static gboolean is_pid_valid (pid_t pid)
158 {
159 gboolean result = FALSE;
160
161 #if defined(PLATFORM_MACOSX) || defined(__OpenBSD__)
162 if (((kill(pid, 0) == 0) || (errno == EPERM)) && pid != 0)
163 result = TRUE;
164 #elif defined(__HAIKU__)
165 team_info teamInfo;
166 if (get_team_info ((team_id)pid, &teamInfo) == B_OK)
167 result = TRUE;
168 #else
169 gchar *dir = g_strdup_printf ("/proc/%d", pid);
170 if (!access (dir, F_OK))
171 result = TRUE;
172 g_free (dir);
173 #endif
174
175 return result;
176 }
177
178 static void process_set_defaults (struct _WapiHandle_process *process_handle)
179 {
180 /* These seem to be the defaults on w2k */
181 process_handle->min_working_set = 204800;
182 process_handle->max_working_set = 1413120;
183
184 _wapi_time_t_to_filetime (time (NULL), &process_handle->create_time);
185 }
186
187 static int
188 len16 (const gunichar2 *str)
189 {
190 int len = 0;
191
192 while (*str++ != 0)
193 len++;
194
195 return len;
196 }
197
198 static gunichar2 *
199 utf16_concat (const gunichar2 *first, ...)
200 {
201 va_list args;
202 int total = 0, i;
203 const gunichar2 *s;
204 gunichar2 *ret;
205
206 va_start (args, first);
207 total += len16 (first);
208 for (s = va_arg (args, gunichar2 *); s != NULL; s = va_arg(args, gunichar2 *)){
209 total += len16 (s);
210 }
211 va_end (args);
212
213 ret = g_new (gunichar2, total + 1);
214 if (ret == NULL)
215 return NULL;
216
217 ret [total] = 0;
218 i = 0;
219 for (s = first; *s != 0; s++)
220 ret [i++] = *s;
221 va_start (args, first);
222 for (s = va_arg (args, gunichar2 *); s != NULL; s = va_arg (args, gunichar2 *)){
223 const gunichar2 *p;
224
225 for (p = s; *p != 0; p++)
226 ret [i++] = *p;
227 }
228 va_end (args);
229
230 return ret;
231 }
232
233 #ifdef PLATFORM_MACOSX
234
235 /* 0 = no detection; -1 = not 10.5 or higher; 1 = 10.5 or higher */
236 static int osx_10_5_or_higher;
237
238 static void
239 detect_osx_10_5_or_higher (void)
240 {
241 struct utsname u;
242 char *p;
243 int v;
244
245 if (uname (&u) != 0){
246 osx_10_5_or_higher = 1;
247 return;
248 }
249
250 p = u.release;
251 v = atoi (p);
252
253 if (v < 9)
254 osx_10_5_or_higher = -1;
255 else
256 osx_10_5_or_higher = 1;
257 }
258
259 static gboolean
260 is_macos_10_5_or_higher (void)
261 {
262 if (osx_10_5_or_higher == 0)
263 detect_osx_10_5_or_higher ();
264
265 return (osx_10_5_or_higher == 1);
266 }
267 #endif
268
269 static const gunichar2 utf16_space_bytes [2] = { 0x20, 0 };
270 static const gunichar2 *utf16_space = utf16_space_bytes;
271 static const gunichar2 utf16_quote_bytes [2] = { 0x22, 0 };
272 static const gunichar2 *utf16_quote = utf16_quote_bytes;
273
274 #ifdef DEBUG_ENABLED
275 /* Useful in gdb */
276 void
277 print_utf16 (gunichar2 *str)
278 {
279 gchar *res;
280
281 res = g_utf16_to_utf8 (str, -1, NULL, NULL, NULL);
282 g_print ("%s\n", res);
283 g_free (res);
284 }
285 #endif
286
287 /* Implemented as just a wrapper around CreateProcess () */
288 gboolean ShellExecuteEx (WapiShellExecuteInfo *sei)
289 {
290 gboolean ret;
291 WapiProcessInformation process_info;
292 gunichar2 *args;
293
294 if (sei == NULL) {
295 /* w2k just segfaults here, but we can do better than
296 * that
297 */
298 SetLastError (ERROR_INVALID_PARAMETER);
299 return (FALSE);
300 }
301
302 if (sei->lpFile == NULL) {
303 /* w2k returns TRUE for this, for some reason. */
304 return (TRUE);
305 }
306
307 /* Put both executable and parameters into the second argument
308 * to CreateProcess (), so it searches $PATH. The conversion
309 * into and back out of utf8 is because there is no
310 * g_strdup_printf () equivalent for gunichar2 :-(
311 */
312 args = utf16_concat (utf16_quote, sei->lpFile, utf16_quote, sei->lpParameters == NULL ? NULL : utf16_space, sei->lpParameters, NULL);
313 if (args == NULL){
314 SetLastError (ERROR_INVALID_DATA);
315 return (FALSE);
316 }
317 ret = CreateProcess (NULL, args, NULL, NULL, TRUE,
318 CREATE_UNICODE_ENVIRONMENT, NULL,
319 sei->lpDirectory, NULL, &process_info);
320 g_free (args);
321
322 if (!ret && GetLastError () == ERROR_OUTOFMEMORY)
323 return ret;
324
325 if (!ret) {
326 static char *handler;
327 static gunichar2 *handler_utf16;
328
329 if (handler_utf16 == (gunichar2 *)-1)
330 return FALSE;
331
332 #ifdef PLATFORM_MACOSX
333 handler = g_strdup ("/usr/bin/open");
334 #else
335 /*
336 * On Linux, try: xdg-open, the FreeDesktop standard way of doing it,
337 * if that fails, try to use gnome-open, then kfmclient
338 */
339 handler = g_find_program_in_path ("xdg-open");
340 if (handler == NULL){
341 handler = g_find_program_in_path ("gnome-open");
342 if (handler == NULL){
343 handler = g_find_program_in_path ("kfmclient");
344 if (handler == NULL){
345 handler_utf16 = (gunichar2 *) -1;
346 return (FALSE);
347 } else {
348 /* kfmclient needs exec argument */
349 char *old = handler;
350 handler = g_strconcat (old, " exec",
351 NULL);
352 g_free (old);
353 }
354 }
355 }
356 #endif
357 handler_utf16 = g_utf8_to_utf16 (handler, -1, NULL, NULL, NULL);
358 g_free (handler);
359
360 /* Put quotes around the filename, in case it's a url
361 * that contains #'s (CreateProcess() calls
362 * g_shell_parse_argv(), which deliberately throws
363 * away anything after an unquoted #). Fixes bug
364 * 371567.
365 */
366 args = utf16_concat (handler_utf16, utf16_space, utf16_quote,
367 sei->lpFile, utf16_quote,
368 sei->lpParameters == NULL ? NULL : utf16_space,
369 sei->lpParameters, NULL);
370 if (args == NULL){
371 SetLastError (ERROR_INVALID_DATA);
372 return FALSE;
373 }
374 ret = CreateProcess (NULL, args, NULL, NULL, TRUE,
375 CREATE_UNICODE_ENVIRONMENT, NULL,
376 sei->lpDirectory, NULL, &process_info);
377 g_free (args);
378 if (!ret){
379 if (GetLastError () != ERROR_OUTOFMEMORY)
380 SetLastError (ERROR_INVALID_DATA);
381 return FALSE;
382 }
383 }
384
385 if (sei->fMask & SEE_MASK_NOCLOSEPROCESS) {
386 sei->hProcess = process_info.hProcess;
387 } else {
388 CloseHandle (process_info.hProcess);
389 }
390
391 return (ret);
392 }
393
394 static gboolean
395 is_managed_binary (const gchar *filename)
396 {
397 int original_errno = errno;
398 #if defined(HAVE_LARGE_FILE_SUPPORT) && defined(O_LARGEFILE)
399 int file = open (filename, O_RDONLY | O_LARGEFILE);
400 #else
401 int file = open (filename, O_RDONLY);
402 #endif
403 off_t new_offset;
404 unsigned char buffer[8];
405 off_t file_size, optional_header_offset;
406 off_t pe_header_offset;
407 gboolean managed = FALSE;
408 int num_read;
409 guint32 first_word, second_word;
410
411 /* If we are unable to open the file, then we definitely
412 * can't say that it is managed. The child mono process
413 * probably wouldn't be able to open it anyway.
414 */
415 if (file < 0) {
416 errno = original_errno;
417 return FALSE;
418 }
419
420 /* Retrieve the length of the file for future sanity checks. */
421 file_size = lseek (file, 0, SEEK_END);
422 lseek (file, 0, SEEK_SET);
423
424 /* We know we need to read a header field at offset 60. */
425 if (file_size < 64)
426 goto leave;
427
428 num_read = read (file, buffer, 2);
429
430 if ((num_read != 2) || (buffer[0] != 'M') || (buffer[1] != 'Z'))
431 goto leave;
432
433 new_offset = lseek (file, 60, SEEK_SET);
434
435 if (new_offset != 60)
436 goto leave;
437
438 num_read = read (file, buffer, 4);
439
440 if (num_read != 4)
441 goto leave;
442 pe_header_offset = buffer[0]
443 | (buffer[1] << 8)
444 | (buffer[2] << 16)
445 | (buffer[3] << 24);
446
447 if (pe_header_offset + 24 > file_size)
448 goto leave;
449
450 new_offset = lseek (file, pe_header_offset, SEEK_SET);
451
452 if (new_offset != pe_header_offset)
453 goto leave;
454
455 num_read = read (file, buffer, 4);
456
457 if ((num_read != 4) || (buffer[0] != 'P') || (buffer[1] != 'E') || (buffer[2] != 0) || (buffer[3] != 0))
458 goto leave;
459
460 /*
461 * Verify that the header we want in the optional header data
462 * is present in this binary.
463 */
464 new_offset = lseek (file, pe_header_offset + 20, SEEK_SET);
465
466 if (new_offset != pe_header_offset + 20)
467 goto leave;
468
469 num_read = read (file, buffer, 2);
470
471 if ((num_read != 2) || ((buffer[0] | (buffer[1] << 8)) < 216))
472 goto leave;
473
474 /* Read the CLR header address and size fields. These will be
475 * zero if the binary is not managed.
476 */
477 optional_header_offset = pe_header_offset + 24;
478 new_offset = lseek (file, optional_header_offset + 208, SEEK_SET);
479
480 if (new_offset != optional_header_offset + 208)
481 goto leave;
482
483 num_read = read (file, buffer, 8);
484
485 /* We are not concerned with endianness, only with
486 * whether it is zero or not.
487 */
488 first_word = *(guint32 *)&buffer[0];
489 second_word = *(guint32 *)&buffer[4];
490
491 if ((num_read != 8) || (first_word == 0) || (second_word == 0))
492 goto leave;
493
494 managed = TRUE;
495
496 leave:
497 close (file);
498 errno = original_errno;
499 return managed;
500 }
501
502 gboolean CreateProcessWithLogonW (const gunichar2 *username,
503 const gunichar2 *domain,
504 const gunichar2 *password,
505 const guint32 logonFlags,
506 const gunichar2 *appname,
507 const gunichar2 *cmdline,
508 guint32 create_flags,
509 gpointer env,
510 const gunichar2 *cwd,
511 WapiStartupInfo *startup,
512 WapiProcessInformation *process_info)
513 {
514 /* FIXME: use user information */
515 return CreateProcess (appname, cmdline, NULL, NULL, FALSE, create_flags, env, cwd, startup, process_info);
516 }
517
518 static gboolean
519 is_executable (const char *prog)
520 {
521 struct stat buf;
522 if (access (prog, X_OK) != 0)
523 return FALSE;
524 if (stat (prog, &buf))
525 return FALSE;
526 if (S_ISREG (buf.st_mode))
527 return TRUE;
528 return FALSE;
529 }
530
531 static void
532 switchDirectorySeparators(gchar *path)
533 {
534 size_t i, pathLength = strlen(path);
535
536 /* Turn all the slashes round the right way, except for \' */
537 /* There are probably other characters that need to be excluded as well. */
538 for (i = 0; i < pathLength; i++)
539 {
540 if (path[i] == '\\' && i < pathLength - 1 && path[i+1] != '\'' ) {
541 path[i] = '/';
542 }
543 }
544 }
545
546 gboolean CreateProcess (const gunichar2 *appname, const gunichar2 *cmdline,
547 WapiSecurityAttributes *process_attrs G_GNUC_UNUSED,
548 WapiSecurityAttributes *thread_attrs G_GNUC_UNUSED,
549 gboolean inherit_handles, guint32 create_flags,
550 gpointer new_environ, const gunichar2 *cwd,
551 WapiStartupInfo *startup,
552 WapiProcessInformation *process_info)
553 {
554 gchar *cmd=NULL, *prog = NULL, *full_prog = NULL, *args = NULL, *args_after_prog = NULL, *dir = NULL, **env_strings = NULL, **argv = NULL;
555 guint32 i, env_count = 0;
556 gboolean ret = FALSE;
557 gpointer handle;
558 struct _WapiHandle_process process_handle = {0}, *process_handle_data;
559 GError *gerr = NULL;
560 int in_fd, out_fd, err_fd;
561 pid_t pid;
562 int thr_ret;
563 int startup_pipe [2] = {-1, -1};
564 int dummy;
565 struct MonoProcess *mono_process;
566 gboolean fork_failed = FALSE;
567
568 mono_once (&process_ops_once, process_ops_init);
569 mono_once (&process_sig_chld_once, process_add_sigchld_handler);
570
571 /* appname and cmdline specify the executable and its args:
572 *
573 * If appname is not NULL, it is the name of the executable.
574 * Otherwise the executable is the first token in cmdline.
575 *
576 * Executable searching:
577 *
578 * If appname is not NULL, it can specify the full path and
579 * file name, or else a partial name and the current directory
580 * will be used. There is no additional searching.
581 *
582 * If appname is NULL, the first whitespace-delimited token in
583 * cmdline is used. If the name does not contain a full
584 * directory path, the search sequence is:
585 *
586 * 1) The directory containing the current process
587 * 2) The current working directory
588 * 3) The windows system directory (Ignored)
589 * 4) The windows directory (Ignored)
590 * 5) $PATH
591 *
592 * Just to make things more interesting, tokens can contain
593 * white space if they are surrounded by quotation marks. I'm
594 * beginning to understand just why windows apps are generally
595 * so crap, with an API like this :-(
596 */
597 if (appname != NULL) {
598 cmd = mono_unicode_to_external (appname);
599 if (cmd == NULL) {
600 DEBUG ("%s: unicode conversion returned NULL",
601 __func__);
602
603 SetLastError (ERROR_PATH_NOT_FOUND);
604 goto free_strings;
605 }
606
607 switchDirectorySeparators(cmd);
608 }
609
610 if (cmdline != NULL) {
611 args = mono_unicode_to_external (cmdline);
612 if (args == NULL) {
613 DEBUG ("%s: unicode conversion returned NULL", __func__);
614
615 SetLastError (ERROR_PATH_NOT_FOUND);
616 goto free_strings;
617 }
618 }
619
620 if (cwd != NULL) {
621 dir = mono_unicode_to_external (cwd);
622 if (dir == NULL) {
623 DEBUG ("%s: unicode conversion returned NULL", __func__);
624
625 SetLastError (ERROR_PATH_NOT_FOUND);
626 goto free_strings;
627 }
628
629 /* Turn all the slashes round the right way */
630 switchDirectorySeparators(dir);
631 }
632
633
634 /* We can't put off locating the executable any longer :-( */
635 if (cmd != NULL) {
636 gchar *unquoted;
637 if (g_ascii_isalpha (cmd[0]) && (cmd[1] == ':')) {
638 /* Strip off the drive letter. I can't
639 * believe that CP/M holdover is still
640 * visible...
641 */
642 g_memmove (cmd, cmd+2, strlen (cmd)-2);
643 cmd[strlen (cmd)-2] = '\0';
644 }
645
646 unquoted = g_shell_unquote (cmd, NULL);
647 if (unquoted[0] == '/') {
648 /* Assume full path given */
649 prog = g_strdup (unquoted);
650
651 /* Executable existing ? */
652 if (!is_executable (prog)) {
653 DEBUG ("%s: Couldn't find executable %s",
654 __func__, prog);
655 g_free (unquoted);
656 SetLastError (ERROR_FILE_NOT_FOUND);
657 goto free_strings;
658 }
659 } else {
660 /* Search for file named by cmd in the current
661 * directory
662 */
663 char *curdir = g_get_current_dir ();
664
665 prog = g_strdup_printf ("%s/%s", curdir, unquoted);
666 g_free (curdir);
667
668 /* And make sure it's executable */
669 if (!is_executable (prog)) {
670 DEBUG ("%s: Couldn't find executable %s",
671 __func__, prog);
672 g_free (unquoted);
673 SetLastError (ERROR_FILE_NOT_FOUND);
674 goto free_strings;
675 }
676 }
677 g_free (unquoted);
678
679 args_after_prog = args;
680 } else {
681 gchar *token = NULL;
682 char quote;
683
684 /* Dig out the first token from args, taking quotation
685 * marks into account
686 */
687
688 /* First, strip off all leading whitespace */
689 args = g_strchug (args);
690
691 /* args_after_prog points to the contents of args
692 * after token has been set (otherwise argv[0] is
693 * duplicated)
694 */
695 args_after_prog = args;
696
697 /* Assume the opening quote will always be the first
698 * character
699 */
700 if (args[0] == '\"' || args [0] == '\'') {
701 quote = args [0];
702 for (i = 1; args[i] != '\0' && args[i] != quote; i++);
703 if (args [i + 1] == '\0' || g_ascii_isspace (args[i+1])) {
704 /* We found the first token */
705 token = g_strndup (args+1, i-1);
706 args_after_prog = g_strchug (args + i + 1);
707 } else {
708 /* Quotation mark appeared in the
709 * middle of the token. Just give the
710 * whole first token, quotes and all,
711 * to exec.
712 */
713 }
714 }
715
716 if (token == NULL) {
717 /* No quote mark, or malformed */
718 for (i = 0; args[i] != '\0'; i++) {
719 if (g_ascii_isspace (args[i])) {
720 token = g_strndup (args, i);
721 args_after_prog = args + i + 1;
722 break;
723 }
724 }
725 }
726
727 if (token == NULL && args[0] != '\0') {
728 /* Must be just one token in the string */
729 token = g_strdup (args);
730 args_after_prog = NULL;
731 }
732
733 if (token == NULL) {
734 /* Give up */
735 DEBUG ("%s: Couldn't find what to exec", __func__);
736
737 SetLastError (ERROR_PATH_NOT_FOUND);
738 goto free_strings;
739 }
740
741 /* Turn all the slashes round the right way. Only for
742 * the prg. name
743 */
744 switchDirectorySeparators(token);
745
746 if (g_ascii_isalpha (token[0]) && (token[1] == ':')) {
747 /* Strip off the drive letter. I can't
748 * believe that CP/M holdover is still
749 * visible...
750 */
751 g_memmove (token, token+2, strlen (token)-2);
752 token[strlen (token)-2] = '\0';
753 }
754
755 if (token[0] == '/') {
756 /* Assume full path given */
757 prog = g_strdup (token);
758
759 /* Executable existing ? */
760 if (!is_executable (prog)) {
761 DEBUG ("%s: Couldn't find executable %s",
762 __func__, token);
763 g_free (token);
764 SetLastError (ERROR_FILE_NOT_FOUND);
765 goto free_strings;
766 }
767
768 } else {
769 char *curdir = g_get_current_dir ();
770
771 /* FIXME: Need to record the directory
772 * containing the current process, and check
773 * that for the new executable as the first
774 * place to look
775 */
776
777 prog = g_strdup_printf ("%s/%s", curdir, token);
778 g_free (curdir);
779
780 /* I assume X_OK is the criterion to use,
781 * rather than F_OK
782 */
783 if (!is_executable (prog)) {
784 g_free (prog);
785 prog = g_find_program_in_path (token);
786 if (prog == NULL) {
787 DEBUG ("%s: Couldn't find executable %s", __func__, token);
788
789 g_free (token);
790 SetLastError (ERROR_FILE_NOT_FOUND);
791 goto free_strings;
792 }
793 }
794 }
795
796 g_free (token);
797 }
798
799 DEBUG ("%s: Exec prog [%s] args [%s]", __func__, prog,
800 args_after_prog);
801
802 /* Check for CLR binaries; if found, we will try to invoke
803 * them using the same mono binary that started us.
804 */
805 if (is_managed_binary (prog)) {
806 gunichar2 *newapp, *newcmd;
807 gsize bytes_ignored;
808
809 newapp = mono_unicode_from_external ("mono", &bytes_ignored);
810
811 if (newapp != NULL) {
812 if (appname != NULL) {
813 newcmd = utf16_concat (newapp, utf16_space,
814 appname, utf16_space,
815 cmdline, NULL);
816 } else {
817 newcmd = utf16_concat (newapp, utf16_space,
818 cmdline, NULL);
819 }
820
821 g_free ((gunichar2 *)newapp);
822
823 if (newcmd != NULL) {
824 ret = CreateProcess (NULL, newcmd,
825 process_attrs,
826 thread_attrs,
827 inherit_handles,
828 create_flags, new_environ,
829 cwd, startup,
830 process_info);
831
832 g_free ((gunichar2 *)newcmd);
833
834 goto free_strings;
835 }
836 }
837 }
838
839 if (args_after_prog != NULL && *args_after_prog) {
840 gchar *qprog;
841
842 qprog = g_shell_quote (prog);
843 full_prog = g_strconcat (qprog, " ", args_after_prog, NULL);
844 g_free (qprog);
845 } else {
846 full_prog = g_shell_quote (prog);
847 }
848
849 ret = g_shell_parse_argv (full_prog, NULL, &argv, &gerr);
850 if (ret == FALSE) {
851 g_message ("CreateProcess: %s\n", gerr->message);
852 g_error_free (gerr);
853 gerr = NULL;
854 goto free_strings;
855 }
856
857 if (startup != NULL && startup->dwFlags & STARTF_USESTDHANDLES) {
858 in_fd = GPOINTER_TO_UINT (startup->hStdInput);
859 out_fd = GPOINTER_TO_UINT (startup->hStdOutput);
860 err_fd = GPOINTER_TO_UINT (startup->hStdError);
861 } else {
862 in_fd = GPOINTER_TO_UINT (GetStdHandle (STD_INPUT_HANDLE));
863 out_fd = GPOINTER_TO_UINT (GetStdHandle (STD_OUTPUT_HANDLE));
864 err_fd = GPOINTER_TO_UINT (GetStdHandle (STD_ERROR_HANDLE));
865 }
866
867 g_strlcpy (process_handle.proc_name, prog,
868 _WAPI_PROC_NAME_MAX_LEN - 1);
869
870 process_set_defaults (&process_handle);
871
872 handle = _wapi_handle_new (WAPI_HANDLE_PROCESS, &process_handle);
873 if (handle == _WAPI_HANDLE_INVALID) {
874 g_warning ("%s: error creating process handle", __func__);
875
876 ret = FALSE;
877 SetLastError (ERROR_OUTOFMEMORY);
878 goto free_strings;
879 }
880
881 /* new_environ is a block of NULL-terminated strings, which
882 * is itself NULL-terminated. Of course, passing an array of
883 * string pointers would have made things too easy :-(
884 *
885 * If new_environ is not NULL it specifies the entire set of
886 * environment variables in the new process. Otherwise the
887 * new process inherits the same environment.
888 */
889 if (new_environ != NULL) {
890 gunichar2 *new_environp;
891
892 /* Count the number of strings */
893 for (new_environp = (gunichar2 *)new_environ; *new_environp;
894 new_environp++) {
895 env_count++;
896 while (*new_environp) {
897 new_environp++;
898 }
899 }
900
901 /* +2: one for the process handle value, and the last
902 * one is NULL
903 */
904 env_strings = g_new0 (gchar *, env_count + 2);
905
906 /* Copy each environ string into 'strings' turning it
907 * into utf8 (or the requested encoding) at the same
908 * time
909 */
910 env_count = 0;
911 for (new_environp = (gunichar2 *)new_environ; *new_environp;
912 new_environp++) {
913 env_strings[env_count] = mono_unicode_to_external (new_environp);
914 env_count++;
915 while (*new_environp) {
916 new_environp++;
917 }
918 }
919 } else {
920 for (i = 0; environ[i] != NULL; i++) {
921 env_count++;
922 }
923
924 /* +2: one for the process handle value, and the last
925 * one is NULL
926 */
927 env_strings = g_new0 (gchar *, env_count + 2);
928
929 /* Copy each environ string into 'strings' turning it
930 * into utf8 (or the requested encoding) at the same
931 * time
932 */
933 env_count = 0;
934 for (i = 0; environ[i] != NULL; i++) {
935 env_strings[env_count] = g_strdup (environ[i]);
936 env_count++;
937 }
938 }
939 /* pass process handle info to the child, so it doesn't have
940 * to do an expensive search over the whole list
941 */
942 if (env_strings != NULL) {
943 struct _WapiHandleUnshared *handle_data;
944 struct _WapiHandle_shared_ref *ref;
945
946 handle_data = &_WAPI_PRIVATE_HANDLES(GPOINTER_TO_UINT(handle));
947 ref = &handle_data->u.shared;
948
949 env_strings[env_count] = g_strdup_printf ("_WAPI_PROCESS_HANDLE_OFFSET=%d", ref->offset);
950 }
951
952 /* Create a pipe to make sure the child doesn't exit before
953 * we can add the process to the linked list of mono_processes */
954 if (pipe (startup_pipe) == -1) {
955 /* Could not create the pipe to synchroniz process startup. We'll just not synchronize.
956 * This is just for a very hard to hit race condition in the first place */
957 startup_pipe [0] = startup_pipe [1] = -1;
958 DEBUG ("%s: new process startup not synchronized. We may not notice if the newly created process exits immediately.", __func__);
959 }
960
961 thr_ret = _wapi_handle_lock_shared_handles ();
962 g_assert (thr_ret == 0);
963
964 pid = fork ();
965 if (pid == -1) {
966 /* Error */
967 SetLastError (ERROR_OUTOFMEMORY);
968 ret = FALSE;
969 fork_failed = TRUE;
970 goto cleanup;
971 } else if (pid == 0) {
972 /* Child */
973
974 if (startup_pipe [0] != -1) {
975 /* Wait until the parent has updated it's internal data */
976 ssize_t _i G_GNUC_UNUSED = read (startup_pipe [0], &dummy, 1);
977 DEBUG ("%s: child: parent has completed its setup", __func__);
978 close (startup_pipe [0]);
979 close (startup_pipe [1]);
980 }
981
982 /* should we detach from the process group? */
983
984 /* Connect stdin, stdout and stderr */
985 dup2 (in_fd, 0);
986 dup2 (out_fd, 1);
987 dup2 (err_fd, 2);
988
989 if (inherit_handles != TRUE) {
990 /* FIXME: do something here */
991 }
992
993 /* Close all file descriptors */
994 for (i = getdtablesize () - 1; i > 2; i--) {
995 close (i);
996 }
997
998 #ifdef DEBUG_ENABLED
999 DEBUG ("%s: exec()ing [%s] in dir [%s]", __func__, cmd,
1000 dir==NULL?".":dir);
1001 for (i = 0; argv[i] != NULL; i++) {
1002 g_message ("arg %d: [%s]", i, argv[i]);
1003 }
1004
1005 for (i = 0; env_strings[i] != NULL; i++) {
1006 g_message ("env %d: [%s]", i, env_strings[i]);
1007 }
1008 #endif
1009
1010 /* set cwd */
1011 if (dir != NULL && chdir (dir) == -1) {
1012 /* set error */
1013 _exit (-1);
1014 }
1015
1016 /* exec */
1017 execve (argv[0], argv, env_strings);
1018
1019 /* set error */
1020 _exit (-1);
1021 }
1022 /* parent */
1023
1024 ret = _wapi_lookup_handle (handle, WAPI_HANDLE_PROCESS,
1025 (gpointer *)&process_handle_data);
1026 if (ret == FALSE) {
1027 g_warning ("%s: error looking up process handle %p", __func__,
1028 handle);
1029 _wapi_handle_unref (handle);
1030 goto cleanup;
1031 }
1032
1033 process_handle_data->id = pid;
1034
1035 /* Add our mono_process into the linked list of mono_processes */
1036 mono_process = (struct MonoProcess *) g_malloc0 (sizeof (struct MonoProcess));
1037 mono_process->pid = pid;
1038 mono_process->handle_count = 1;
1039 if (MONO_SEM_INIT (&mono_process->exit_sem, 0) != 0) {
1040 /* If we can't create the exit semaphore, we just don't add anything
1041 * to our list of mono processes. Waiting on the process will return
1042 * immediately. */
1043 g_warning ("%s: could not create exit semaphore for process.", strerror (errno));
1044 g_free (mono_process);
1045 } else {
1046 /* Keep the process handle artificially alive until the process
1047 * exits so that the information in the handle isn't lost. */
1048 _wapi_handle_ref (handle);
1049 mono_process->handle = handle;
1050
1051 process_handle_data->self = _wapi_getpid ();
1052 process_handle_data->mono_process = mono_process;
1053
1054 mono_mutex_lock (&mono_processes_mutex);
1055 mono_process->next = mono_processes;
1056 mono_processes = mono_process;
1057 mono_mutex_unlock (&mono_processes_mutex);
1058 }
1059
1060 if (process_info != NULL) {
1061 process_info->hProcess = handle;
1062 process_info->dwProcessId = pid;
1063
1064 /* FIXME: we might need to handle the thread info some
1065 * day
1066 */
1067 process_info->hThread = INVALID_HANDLE_VALUE;
1068 process_info->dwThreadId = 0;
1069 }
1070
1071 cleanup:
1072 _wapi_handle_unlock_shared_handles ();
1073
1074 if (fork_failed)
1075 _wapi_handle_unref (handle);
1076
1077 if (startup_pipe [1] != -1) {
1078 /* Write 1 byte, doesn't matter what */
1079 ssize_t _i G_GNUC_UNUSED = write (startup_pipe [1], startup_pipe, 1);
1080 close (startup_pipe [0]);
1081 close (startup_pipe [1]);
1082 }
1083
1084 free_strings:
1085 if (cmd != NULL) {
1086 g_free (cmd);
1087 }
1088 if (full_prog != NULL) {
1089 g_free (full_prog);
1090 }
1091 if (prog != NULL) {
1092 g_free (prog);
1093 }
1094 if (args != NULL) {
1095 g_free (args);
1096 }
1097 if (dir != NULL) {
1098 g_free (dir);
1099 }
1100 if(env_strings != NULL) {
1101 g_strfreev (env_strings);
1102 }
1103 if (argv != NULL) {
1104 g_strfreev (argv);
1105 }
1106
1107 DEBUG ("%s: returning handle %p for pid %d", __func__, handle,
1108 pid);
1109
1110 /* Check if something needs to be cleaned up. */
1111 mono_processes_cleanup ();
1112
1113 return(ret);
1114 }
1115
1116 static void process_set_name (struct _WapiHandle_process *process_handle)
1117 {
1118 gchar *progname, *utf8_progname, *slash;
1119
1120 progname=g_get_prgname ();
1121 utf8_progname=mono_utf8_from_external (progname);
1122
1123 DEBUG ("%s: using [%s] as prog name", __func__, progname);
1124
1125 if(utf8_progname!=NULL) {
1126 slash=strrchr (utf8_progname, '/');
1127 if(slash!=NULL) {
1128 g_strlcpy (process_handle->proc_name, slash+1,
1129 _WAPI_PROC_NAME_MAX_LEN - 1);
1130 } else {
1131 g_strlcpy (process_handle->proc_name, utf8_progname,
1132 _WAPI_PROC_NAME_MAX_LEN - 1);
1133 }
1134
1135 g_free (utf8_progname);
1136 }
1137 }
1138
1139 extern void _wapi_time_t_to_filetime (time_t timeval, WapiFileTime *filetime);
1140
1141 #if !GLIB_CHECK_VERSION (2,4,0)
1142 #define g_setenv(a,b,c) setenv(a,b,c)
1143 #define g_unsetenv(a) unsetenv(a)
1144 #endif
1145
1146 static void process_set_current (void)
1147 {
1148 pid_t pid = _wapi_getpid ();
1149 const char *handle_env;
1150 struct _WapiHandle_process process_handle = {0};
1151
1152 mono_once (&process_ops_once, process_ops_init);
1153
1154 handle_env = g_getenv ("_WAPI_PROCESS_HANDLE_OFFSET");
1155 g_unsetenv ("_WAPI_PROCESS_HANDLE_OFFSET");
1156
1157 if (handle_env != NULL) {
1158 struct _WapiHandle_process *process_handlep;
1159 gchar *procname = NULL;
1160 gboolean ok;
1161
1162 current_process = _wapi_handle_new_from_offset (WAPI_HANDLE_PROCESS, atoi (handle_env), TRUE);
1163
1164 DEBUG ("%s: Found my process handle: %p (offset %d 0x%x)",
1165 __func__, current_process, atoi (handle_env),
1166 atoi (handle_env));
1167
1168 ok = _wapi_lookup_handle (current_process, WAPI_HANDLE_PROCESS,
1169 (gpointer *)&process_handlep);
1170 if (ok) {
1171 /* This test will probably break on linuxthreads, but
1172 * that should be ancient history on all distros we
1173 * care about by now
1174 */
1175 if (process_handlep->id == pid) {
1176 procname = process_handlep->proc_name;
1177 if (!strcmp (procname, "mono")) {
1178 /* Set a better process name */
1179 DEBUG ("%s: Setting better process name", __func__);
1180
1181 process_set_name (process_handlep);
1182 } else {
1183 DEBUG ("%s: Leaving process name: %s", __func__, procname);
1184 }
1185
1186 return;
1187 }
1188
1189 /* Wrong pid, so drop this handle and fall through to
1190 * create a new one
1191 */
1192 _wapi_handle_unref (current_process);
1193 }
1194 }
1195
1196 /* We get here if the handle wasn't specified in the
1197 * environment, or if the process ID was wrong, or if the
1198 * handle lookup failed (eg if the parent process forked and
1199 * quit immediately, and deleted the shared data before the
1200 * child got a chance to attach it.)
1201 */
1202
1203 DEBUG ("%s: Need to create my own process handle", __func__);
1204
1205 process_handle.id = pid;
1206
1207 process_set_defaults (&process_handle);
1208 process_set_name (&process_handle);
1209
1210 current_process = _wapi_handle_new (WAPI_HANDLE_PROCESS,
1211 &process_handle);
1212 if (current_process == _WAPI_HANDLE_INVALID) {
1213 g_warning ("%s: error creating process handle", __func__);
1214 return;
1215 }
1216 }
1217
1218 gpointer _wapi_process_duplicate ()
1219 {
1220 mono_once (&process_current_once, process_set_current);
1221
1222 _wapi_handle_ref (current_process);
1223
1224 return(current_process);
1225 }
1226
1227 /* Returns a pseudo handle that doesn't need to be closed afterwards */
1228 gpointer GetCurrentProcess (void)
1229 {
1230 mono_once (&process_current_once, process_set_current);
1231
1232 return(_WAPI_PROCESS_CURRENT);
1233 }
1234
1235 guint32 GetProcessId (gpointer handle)
1236 {
1237 struct _WapiHandle_process *process_handle;
1238 gboolean ok;
1239
1240 if ((GPOINTER_TO_UINT (handle) & _WAPI_PROCESS_UNHANDLED) == _WAPI_PROCESS_UNHANDLED) {
1241 /* This is a pseudo handle */
1242 return(GPOINTER_TO_UINT (handle) & _WAPI_PROCESS_UNHANDLED_PID_MASK);
1243 }
1244
1245 ok = _wapi_lookup_handle (handle, WAPI_HANDLE_PROCESS,
1246 (gpointer *)&process_handle);
1247 if (ok == FALSE) {
1248 SetLastError (ERROR_INVALID_HANDLE);
1249 return (0);
1250 }
1251
1252 return (process_handle->id);
1253 }
1254
1255 guint32 GetCurrentProcessId (void)
1256 {
1257 mono_once (&process_current_once, process_set_current);
1258
1259 return (GetProcessId (current_process));
1260 }
1261
1262 /* Returns the process id as a convenience to the functions that call this */
1263 static pid_t signal_process_if_gone (gpointer handle)
1264 {
1265 struct _WapiHandle_process *process_handle;
1266 gboolean ok;
1267
1268 g_assert ((GPOINTER_TO_UINT (handle) & _WAPI_PROCESS_UNHANDLED) != _WAPI_PROCESS_UNHANDLED);
1269
1270 /* Make sure the process is signalled if it has exited - if
1271 * the parent process didn't wait for it then it won't be
1272 */
1273 ok = _wapi_lookup_handle (handle, WAPI_HANDLE_PROCESS,
1274 (gpointer *)&process_handle);
1275 if (ok == FALSE) {
1276 /* It's possible that the handle has vanished during
1277 * the _wapi_search_handle before it gets here, so
1278 * don't spam the console with warnings.
1279 */
1280 /* g_warning ("%s: error looking up process handle %p",
1281 __func__, handle);*/
1282
1283 return (0);
1284 }
1285
1286 DEBUG ("%s: looking at process %d", __func__, process_handle->id);
1287
1288 if (kill (process_handle->id, 0) == -1 &&
1289 (errno == ESRCH ||
1290 errno == EPERM)) {
1291 /* The process is dead, (EPERM tells us a new process
1292 * has that ID, but as it's owned by someone else it
1293 * can't be the one listed in our shared memory file)
1294 */
1295 _wapi_shared_handle_set_signal_state (handle, TRUE);
1296 }
1297
1298 return (process_handle->id);
1299 }
1300
1301 #ifdef UNUSED_CODE
1302 static gboolean process_enum (gpointer handle, gpointer user_data)
1303 {
1304 GArray *processes=user_data;
1305 pid_t pid = signal_process_if_gone (handle);
1306 int i;
1307
1308 if (pid == 0) {
1309 return (FALSE);
1310 }
1311
1312 /* Ignore processes that have already exited (ie they are signalled) */
1313 if (_wapi_handle_issignalled (handle) == FALSE) {
1314 DEBUG ("%s: process %d added to array", __func__, pid);
1315
1316 /* This ensures that duplicates aren't returned (see
1317 * the comment above _wapi_search_handle () for why
1318 * it's needed
1319 */
1320 for (i = 0; i < processes->len; i++) {
1321 if (g_array_index (processes, pid_t, i) == pid) {
1322 /* We've already got this one, return
1323 * FALSE to keep searching
1324 */
1325 return (FALSE);
1326 }
1327 }
1328
1329 g_array_append_val (processes, pid);
1330 }
1331
1332 /* Return false to keep searching */
1333 return(FALSE);
1334 }
1335 #endif /* UNUSED_CODE */
1336
1337 #if defined(PLATFORM_MACOSX) || defined(__OpenBSD__)
1338
1339 gboolean EnumProcesses (guint32 *pids, guint32 len, guint32 *needed)
1340 {
1341 guint32 count, fit, i, j;
1342 gint32 err;
1343 gboolean done;
1344 size_t proclength, size;
1345 #if defined(__OpenBSD__)
1346 struct kinfo_proc2 *result;
1347 int name[6];
1348 name[0] = CTL_KERN;
1349 name[1] = KERN_PROC2;
1350 name[2] = KERN_PROC_ALL;
1351 name[3] = 0;
1352 name[4] = sizeof(struct kinfo_proc2);
1353 name[5] = 0;
1354 #else
1355 struct kinfo_proc *result;
1356 static const int name[] = { CTL_KERN, KERN_PROC, KERN_PROC_ALL, 0 };
1357 #endif
1358
1359 mono_once (&process_current_once, process_set_current);
1360
1361 result = NULL;
1362 done = FALSE;
1363
1364 do {
1365 proclength = 0;
1366 #if defined(__OpenBSD__)
1367 size = (sizeof(name) / sizeof(*name));
1368 #else
1369 size = (sizeof(name) / sizeof(*name)) - 1;
1370 #endif
1371 err = sysctl ((int *)name, size, NULL, &proclength, NULL, 0);
1372
1373 if (err == 0) {
1374 result = malloc (proclength);
1375
1376 if (result == NULL)
1377 return FALSE;
1378
1379 #if defined(__OpenBSD__)
1380 name[5] = (int)(proclength / sizeof(struct kinfo_proc2));
1381 #endif
1382
1383 err = sysctl ((int *) name, size, result, &proclength, NULL, 0);
1384
1385 if (err == 0)
1386 done = TRUE;
1387 else
1388 free (result);
1389 }
1390 } while (err == 0 && !done);
1391
1392 if (err != 0) {
1393 if (result != NULL) {
1394 free (result);
1395 result = NULL;
1396 }
1397 return(FALSE);
1398 }
1399
1400 #if defined(__OpenBSD__)
1401 count = proclength / sizeof(struct kinfo_proc2);
1402 #else
1403 count = proclength / sizeof(struct kinfo_proc);
1404 #endif
1405 fit = len / sizeof(guint32);
1406 for (i = 0, j = 0; j< fit && i < count; i++) {
1407 #if defined(__OpenBSD__)
1408 pids [j++] = result [i].p_pid;
1409 #else
1410 if (result[i].kp_proc.p_pid > 0) /* Pid 0 not supported */
1411 pids [j++] = result [i].kp_proc.p_pid;
1412 #endif
1413 }
1414 free (result);
1415 result = NULL;
1416 *needed = j * sizeof(guint32);
1417
1418 return(TRUE);
1419 }
1420 #elif defined(__HAIKU__)
1421
1422 gboolean EnumProcesses (guint32 *pids, guint32 len, guint32 *needed)
1423 {
1424 guint32 fit, i = 0;
1425 int32 cookie = 0;
1426 team_info teamInfo;
1427
1428 mono_once (&process_current_once, process_set_current);
1429
1430 fit = len / sizeof (guint32);
1431 while (get_next_team_info (&cookie, &teamInfo) == B_OK && i < fit) {
1432 pids [i++] = teamInfo.team;
1433 }
1434 *needed = i * sizeof (guint32);
1435
1436 return TRUE;
1437 }
1438 #else
1439 gboolean EnumProcesses (guint32 *pids, guint32 len, guint32 *needed)
1440 {
1441 guint32 fit, i;
1442 DIR *dir;
1443 struct dirent *entry;
1444
1445 mono_once (&process_current_once, process_set_current);
1446
1447 dir = opendir ("/proc");
1448 if (dir == NULL) {
1449 return(FALSE);
1450 }
1451
1452 i = 0;
1453 fit = len / sizeof (guint32);
1454 while(i < fit && (entry = readdir (dir)) != NULL) {
1455 pid_t pid;
1456 char *endptr;
1457
1458 if (!isdigit (entry->d_name[0]))
1459 continue;
1460
1461 pid = (pid_t) strtol (entry->d_name, &endptr, 10);
1462 if (*endptr == '\0')
1463 pids [i++] = (guint32) pid;
1464 }
1465 closedir (dir);
1466 *needed = i * sizeof(guint32);
1467
1468 return(TRUE);
1469 }
1470 #endif
1471
1472 static gboolean process_open_compare (gpointer handle, gpointer user_data)
1473 {
1474 pid_t wanted_pid;
1475 pid_t checking_pid = signal_process_if_gone (handle);
1476
1477 if (checking_pid == 0) {
1478 return(FALSE);
1479 }
1480
1481 wanted_pid = GPOINTER_TO_UINT (user_data);
1482
1483 /* It's possible to have more than one process handle with the
1484 * same pid, but only the one running process can be
1485 * unsignalled
1486 */
1487 if (checking_pid == wanted_pid &&
1488 _wapi_handle_issignalled (handle) == FALSE) {
1489 /* If the handle is blown away in the window between
1490 * returning TRUE here and _wapi_search_handle pinging
1491 * the timestamp, the search will continue
1492 */
1493 return(TRUE);
1494 } else {
1495 return(FALSE);
1496 }
1497 }
1498
1499 gboolean CloseProcess(gpointer handle)
1500 {
1501 if ((GPOINTER_TO_UINT (handle) & _WAPI_PROCESS_UNHANDLED) == _WAPI_PROCESS_UNHANDLED) {
1502 /* This is a pseudo handle */
1503 return(TRUE);
1504 }
1505
1506 return CloseHandle (handle);
1507 }
1508
1509 /*
1510 * The caller owns the returned handle and must call CloseProcess () on it to clean it up.
1511 */
1512 gpointer OpenProcess (guint32 req_access G_GNUC_UNUSED, gboolean inherit G_GNUC_UNUSED, guint32 pid)
1513 {
1514 /* Find the process handle that corresponds to pid */
1515 gpointer handle = NULL;
1516
1517 mono_once (&process_current_once, process_set_current);
1518
1519 DEBUG ("%s: looking for process %d", __func__, pid);
1520
1521 handle = _wapi_search_handle (WAPI_HANDLE_PROCESS,
1522 process_open_compare,
1523 GUINT_TO_POINTER (pid), NULL, TRUE);
1524 if (handle == 0) {
1525 if (is_pid_valid (pid)) {
1526 /* Return a pseudo handle for processes we
1527 * don't have handles for
1528 */
1529 return GINT_TO_POINTER (_WAPI_PROCESS_UNHANDLED + pid);
1530 } else {
1531 DEBUG ("%s: Can't find pid %d", __func__, pid);
1532
1533 SetLastError (ERROR_PROC_NOT_FOUND);
1534
1535 return(NULL);
1536 }
1537 }
1538
1539 /* _wapi_search_handle () already added a ref */
1540 return(handle);
1541 }
1542
1543 gboolean GetExitCodeProcess (gpointer process, guint32 *code)
1544 {
1545 struct _WapiHandle_process *process_handle;
1546 gboolean ok;
1547 guint32 pid = -1;
1548
1549 mono_once (&process_current_once, process_set_current);
1550
1551 if(code==NULL) {
1552 return(FALSE);
1553 }
1554
1555 pid = GPOINTER_TO_UINT (process) - _WAPI_PROCESS_UNHANDLED;
1556 if ((GPOINTER_TO_UINT (process) & _WAPI_PROCESS_UNHANDLED) == _WAPI_PROCESS_UNHANDLED) {
1557 /* This is a pseudo handle, so we don't know what the
1558 * exit code was, but we can check whether it's alive or not
1559 */
1560 if (is_pid_valid (pid)) {
1561 *code = STILL_ACTIVE;
1562 return TRUE;
1563 } else {
1564 return FALSE;
1565 }
1566 }
1567
1568 ok=_wapi_lookup_handle (process, WAPI_HANDLE_PROCESS,
1569 (gpointer *)&process_handle);
1570 if(ok==FALSE) {
1571 DEBUG ("%s: Can't find process %p", __func__, process);
1572
1573 return(FALSE);
1574 }
1575
1576 /* A process handle is only signalled if the process has exited
1577 * and has been waited for */
1578
1579 /* Make sure any process exit has been noticed, before
1580 * checking if the process is signalled. Fixes bug 325463.
1581 */
1582 process_wait (process, 0, TRUE);
1583
1584 if (_wapi_handle_issignalled (process) == TRUE) {
1585 *code = process_handle->exitstatus;
1586 } else {
1587 *code = STILL_ACTIVE;
1588 }
1589
1590 return(TRUE);
1591 }
1592
1593 gboolean GetProcessTimes (gpointer process, WapiFileTime *create_time,
1594 WapiFileTime *exit_time, WapiFileTime *kernel_time,
1595 WapiFileTime *user_time)
1596 {
1597 struct _WapiHandle_process *process_handle;
1598 gboolean ok;
1599 gboolean ku_times_set = FALSE;
1600
1601 mono_once (&process_current_once, process_set_current);
1602
1603 if(create_time==NULL || exit_time==NULL || kernel_time==NULL ||
1604 user_time==NULL) {
1605 /* Not sure if w32 allows NULLs here or not */
1606 return(FALSE);
1607 }
1608
1609 if ((GPOINTER_TO_UINT (process) & _WAPI_PROCESS_UNHANDLED) == _WAPI_PROCESS_UNHANDLED) {
1610 /* This is a pseudo handle, so just fail for now
1611 */
1612 return(FALSE);
1613 }
1614
1615 ok=_wapi_lookup_handle (process, WAPI_HANDLE_PROCESS,
1616 (gpointer *)&process_handle);
1617 if(ok==FALSE) {
1618 DEBUG ("%s: Can't find process %p", __func__, process);
1619
1620 return(FALSE);
1621 }
1622
1623 *create_time=process_handle->create_time;
1624
1625 /* A process handle is only signalled if the process has
1626 * exited. Otherwise exit_time isn't set
1627 */
1628 if(_wapi_handle_issignalled (process)==TRUE) {
1629 *exit_time=process_handle->exit_time;
1630 }
1631
1632 #ifdef HAVE_GETRUSAGE
1633 if (process_handle->id == getpid ()) {
1634 struct rusage time_data;
1635 if (getrusage (RUSAGE_SELF, &time_data) == 0) {
1636 gint64 tick_val;
1637 gint64 *tick_val_ptr;
1638 ku_times_set = TRUE;
1639 tick_val = time_data.ru_utime.tv_sec * 10000000 + time_data.ru_utime.tv_usec * 10;
1640 tick_val_ptr = (gint64*)user_time;
1641 *tick_val_ptr = tick_val;
1642 tick_val = time_data.ru_stime.tv_sec * 10000000 + time_data.ru_stime.tv_usec * 10;
1643 tick_val_ptr = (gint64*)kernel_time;
1644 *tick_val_ptr = tick_val;
1645 }
1646 }
1647 #endif
1648 if (!ku_times_set) {
1649 memset (kernel_time, 0, sizeof (WapiFileTime));
1650 memset (user_time, 0, sizeof (WapiFileTime));
1651 }
1652
1653 return(TRUE);
1654 }
1655
1656 typedef struct
1657 {
1658 gpointer address_start;
1659 gpointer address_end;
1660 gchar *perms;
1661 gpointer address_offset;
1662 dev_t device;
1663 ino_t inode;
1664 gchar *filename;
1665 } WapiProcModule;
1666
1667 static void free_procmodule (WapiProcModule *mod)
1668 {
1669 if (mod->perms != NULL) {
1670 g_free (mod->perms);
1671 }
1672 if (mod->filename != NULL) {
1673 g_free (mod->filename);
1674 }
1675 g_free (mod);
1676 }
1677
1678 static gint find_procmodule (gconstpointer a, gconstpointer b)
1679 {
1680 WapiProcModule *want = (WapiProcModule *)a;
1681 WapiProcModule *compare = (WapiProcModule *)b;
1682
1683 if ((want->device == compare->device) &&
1684 (want->inode == compare->inode)) {
1685 return(0);
1686 } else {
1687 return(1);
1688 }
1689 }
1690
1691 #ifdef PLATFORM_MACOSX
1692 #include <mach-o/dyld.h>
1693 #include <mach-o/getsect.h>
1694
1695 static GSList *load_modules (void)
1696 {
1697 GSList *ret = NULL;
1698 WapiProcModule *mod;
1699 uint32_t count = _dyld_image_count ();
1700 int i = 0;
1701
1702 for (i = 0; i < count; i++) {
1703 #if SIZEOF_VOID_P == 8
1704 const struct mach_header_64 *hdr;
1705 const struct section_64 *sec;
1706 #else
1707 const struct mach_header *hdr;
1708 const struct section *sec;
1709 #endif
1710 const char *name;
1711 intptr_t slide;
1712
1713 slide = _dyld_get_image_vmaddr_slide (i);
1714 name = _dyld_get_image_name (i);
1715 #if SIZEOF_VOID_P == 8
1716 hdr = (const struct mach_header_64*)_dyld_get_image_header (i);
1717 sec = getsectbynamefromheader_64 (hdr, SEG_DATA, SECT_DATA);
1718 #else
1719 hdr = _dyld_get_image_header (i);
1720 sec = getsectbynamefromheader (hdr, SEG_DATA, SECT_DATA);
1721 #endif
1722
1723 /* Some dynlibs do not have data sections on osx (#533893) */
1724 if (sec == 0) {
1725 continue;
1726 }
1727
1728 mod = g_new0 (WapiProcModule, 1);
1729 mod->address_start = GINT_TO_POINTER (sec->addr);
1730 mod->address_end = GINT_TO_POINTER (sec->addr+sec->size);
1731 mod->perms = g_strdup ("r--p");
1732 mod->address_offset = 0;
1733 mod->device = makedev (0, 0);
1734 mod->inode = (ino_t) i;
1735 mod->filename = g_strdup (name);
1736
1737 if (g_slist_find_custom (ret, mod, find_procmodule) == NULL) {
1738 ret = g_slist_prepend (ret, mod);
1739 } else {
1740 free_procmodule (mod);
1741 }
1742 }
1743
1744 ret = g_slist_reverse (ret);
1745
1746 return(ret);
1747 }
1748 #elif defined(__OpenBSD__)
1749 #include <link.h>
1750 static int load_modules_callback (struct dl_phdr_info *info, size_t size, void *ptr)
1751 {
1752 if (size < offsetof (struct dl_phdr_info, dlpi_phnum)
1753 + sizeof (info->dlpi_phnum))
1754 return (-1);
1755
1756 struct dl_phdr_info *cpy = calloc(1, sizeof(struct dl_phdr_info));
1757 if (!cpy)
1758 return (-1);
1759
1760 memcpy(cpy, info, sizeof(*info));
1761
1762 g_ptr_array_add ((GPtrArray *)ptr, cpy);
1763
1764 return (0);
1765 }
1766
1767 static GSList *load_modules (void)
1768 {
1769 GSList *ret = NULL;
1770 WapiProcModule *mod;
1771 GPtrArray *dlarray = g_ptr_array_new();
1772 int i;
1773
1774 if (dl_iterate_phdr(load_modules_callback, dlarray) < 0)
1775 return (ret);
1776
1777 for (i = 0; i < dlarray->len; i++) {
1778 struct dl_phdr_info *info = g_ptr_array_index (dlarray, i);
1779
1780 mod = g_new0 (WapiProcModule, 1);
1781 mod->address_start = (gpointer)(info->dlpi_addr + info->dlpi_phdr[0].p_vaddr);
1782 mod->address_end = (gpointer)(info->dlpi_addr +
1783 info->dlpi_phdr[info->dlpi_phnum - 1].p_vaddr);
1784 mod->perms = g_strdup ("r--p");
1785 mod->address_offset = 0;
1786 mod->inode = (ino_t) i;
1787 mod->filename = g_strdup (info->dlpi_name);
1788
1789 DEBUG ("%s: inode=%d, filename=%s, address_start=%p, address_end=%p", __func__,
1790 mod->inode, mod->filename, mod->address_start, mod->address_end);
1791
1792 free(info);
1793
1794 if (g_slist_find_custom (ret, mod, find_procmodule) == NULL) {
1795 ret = g_slist_prepend (ret, mod);
1796 } else {
1797 free_procmodule (mod);
1798 }
1799 }
1800
1801 g_ptr_array_free (dlarray, TRUE);
1802
1803 ret = g_slist_reverse (ret);
1804
1805 return(ret);
1806 }
1807 #elif defined(__HAIKU__)
1808
1809 static GSList *load_modules (void)
1810 {
1811 GSList *ret = NULL;
1812 WapiProcModule *mod;
1813 int32 cookie = 0;
1814 image_info imageInfo;
1815
1816 while (get_next_image_info (B_CURRENT_TEAM, &cookie, &imageInfo) == B_OK) {
1817 mod = g_new0 (WapiProcModule, 1);
1818 mod->device = imageInfo.device;
1819 mod->inode = imageInfo.node;
1820 mod->filename = g_strdup (imageInfo.name);
1821 mod->address_start = MIN (imageInfo.text, imageInfo.data);
1822 mod->address_end = MAX ((uint8_t*)imageInfo.text + imageInfo.text_size,
1823 (uint8_t*)imageInfo.data + imageInfo.data_size);
1824 mod->perms = g_strdup ("r--p");
1825 mod->address_offset = 0;
1826
1827 if (g_slist_find_custom (ret, mod, find_procmodule) == NULL) {
1828 ret = g_slist_prepend (ret, mod);
1829 } else {
1830 free_procmodule (mod);
1831 }
1832 }
1833
1834 ret = g_slist_reverse (ret);
1835
1836 return ret;
1837 }
1838 #else
1839 static GSList *load_modules (FILE *fp)
1840 {
1841 GSList *ret = NULL;
1842 WapiProcModule *mod;
1843 gchar buf[MAXPATHLEN + 1], *p, *endp;
1844 gchar *start_start, *end_start, *prot_start, *offset_start;
1845 gchar *maj_dev_start, *min_dev_start, *inode_start, prot_buf[5];
1846 gpointer address_start, address_end, address_offset;
1847 guint32 maj_dev, min_dev;
1848 ino_t inode;
1849 dev_t device;
1850
1851 while (fgets (buf, sizeof(buf), fp)) {
1852 p = buf;
1853 while (g_ascii_isspace (*p)) ++p;
1854 start_start = p;
1855 if (!g_ascii_isxdigit (*start_start)) {
1856 continue;
1857 }
1858 address_start = (gpointer)strtoul (start_start, &endp, 16);
1859 p = endp;
1860 if (*p != '-') {
1861 continue;
1862 }
1863
1864 ++p;
1865 end_start = p;
1866 if (!g_ascii_isxdigit (*end_start)) {
1867 continue;
1868 }
1869 address_end = (gpointer)strtoul (end_start, &endp, 16);
1870 p = endp;
1871 if (!g_ascii_isspace (*p)) {
1872 continue;
1873 }
1874
1875 while (g_ascii_isspace (*p)) ++p;
1876 prot_start = p;
1877 if (*prot_start != 'r' && *prot_start != '-') {
1878 continue;
1879 }
1880 memcpy (prot_buf, prot_start, 4);
1881 prot_buf[4] = '\0';
1882 while (!g_ascii_isspace (*p)) ++p;
1883
1884 while (g_ascii_isspace (*p)) ++p;
1885 offset_start = p;
1886 if (!g_ascii_isxdigit (*offset_start)) {
1887 continue;
1888 }
1889 address_offset = (gpointer)strtoul (offset_start, &endp, 16);
1890 p = endp;
1891 if (!g_ascii_isspace (*p)) {
1892 continue;
1893 }
1894
1895 while(g_ascii_isspace (*p)) ++p;
1896 maj_dev_start = p;
1897 if (!g_ascii_isxdigit (*maj_dev_start)) {
1898 continue;
1899 }
1900 maj_dev = strtoul (maj_dev_start, &endp, 16);
1901 p = endp;
1902 if (*p != ':') {
1903 continue;
1904 }
1905
1906 ++p;
1907 min_dev_start = p;
1908 if (!g_ascii_isxdigit (*min_dev_start)) {
1909 continue;
1910 }
1911 min_dev = strtoul (min_dev_start, &endp, 16);
1912 p = endp;
1913 if (!g_ascii_isspace (*p)) {
1914 continue;
1915 }
1916
1917 while (g_ascii_isspace (*p)) ++p;
1918 inode_start = p;
1919 if (!g_ascii_isxdigit (*inode_start)) {
1920 continue;
1921 }
1922 inode = (ino_t)strtol (inode_start, &endp, 10);
1923 p = endp;
1924 if (!g_ascii_isspace (*p)) {
1925 continue;
1926 }
1927
1928 device = makedev ((int)maj_dev, (int)min_dev);
1929 if ((device == 0) &&
1930 (inode == 0)) {
1931 continue;
1932 }
1933
1934 while(g_ascii_isspace (*p)) ++p;
1935 /* p now points to the filename */
1936
1937 mod = g_new0 (WapiProcModule, 1);
1938 mod->address_start = address_start;
1939 mod->address_end = address_end;
1940 mod->perms = g_strdup (prot_buf);
1941 mod->address_offset = address_offset;
1942 mod->device = device;
1943 mod->inode = inode;
1944 mod->filename = g_strdup (g_strstrip (p));
1945
1946 if (g_slist_find_custom (ret, mod, find_procmodule) == NULL) {
1947 ret = g_slist_prepend (ret, mod);
1948 } else {
1949 free_procmodule (mod);
1950 }
1951 }
1952
1953 ret = g_slist_reverse (ret);
1954
1955 return(ret);
1956 }
1957 #endif
1958
1959 static gboolean match_procname_to_modulename (gchar *procname, gchar *modulename)
1960 {
1961 char* lastsep = NULL;
1962 char* lastsep2 = NULL;
1963 char* pname = NULL;
1964 char* mname = NULL;
1965 gboolean result = FALSE;
1966
1967 if (procname == NULL || modulename == NULL)
1968 return (FALSE);
1969
1970 pname = mono_path_resolve_symlinks (procname);
1971 mname = mono_path_resolve_symlinks (modulename);
1972
1973 if (!strcmp (pname, mname))
1974 result = TRUE;
1975
1976 if (!result) {
1977 lastsep = strrchr (mname, '/');
1978 if (lastsep)
1979 if (!strcmp (lastsep+1, pname))
1980 result = TRUE;
1981 if (!result) {
1982 lastsep2 = strrchr (pname, '/');
1983 if (lastsep2){
1984 if (lastsep) {
1985 if (!strcmp (lastsep+1, lastsep2+1))
1986 result = TRUE;
1987 } else {
1988 if (!strcmp (mname, lastsep2+1))
1989 result = TRUE;
1990 }
1991 }
1992 }
1993 }
1994
1995 g_free (pname);
1996 g_free (mname);
1997
1998 return result;
1999 }
2000
2001 #if !defined(__OpenBSD__)
2002 static FILE *
2003 open_process_map (int pid, const char *mode)
2004 {
2005 FILE *fp = NULL;
2006 const gchar *proc_path[] = {
2007 "/proc/%d/maps", /* GNU/Linux */
2008 "/proc/%d/map", /* FreeBSD */
2009 NULL
2010 };
2011 int i;
2012 gchar *filename;
2013
2014 for (i = 0; fp == NULL && proc_path [i]; i++) {
2015 filename = g_strdup_printf (proc_path[i], pid);
2016 fp = fopen (filename, mode);
2017 g_free (filename);
2018 }
2019
2020 return fp;
2021 }
2022 #endif
2023
2024 gboolean EnumProcessModules (gpointer process, gpointer *modules,
2025 guint32 size, guint32 *needed)
2026 {
2027 struct _WapiHandle_process *process_handle;
2028 gboolean ok;
2029 #if !defined(__OpenBSD__) && !defined(PLATFORM_MACOSX)
2030 FILE *fp;
2031 #endif
2032 GSList *mods = NULL;
2033 WapiProcModule *module;
2034 guint32 count, avail = size / sizeof(gpointer);
2035 int i;
2036 pid_t pid;
2037 gchar *proc_name = NULL;
2038
2039 /* Store modules in an array of pointers (main module as
2040 * modules[0]), using the load address for each module as a
2041 * token. (Use 'NULL' as an alternative for the main module
2042 * so that the simple implementation can just return one item
2043 * for now.) Get the info from /proc/<pid>/maps on linux,
2044 * /proc/<pid>/map on FreeBSD, other systems will have to
2045 * implement /dev/kmem reading or whatever other horrid
2046 * technique is needed.
2047 */
2048 if (size < sizeof(gpointer)) {
2049 return(FALSE);
2050 }
2051
2052 if ((GPOINTER_TO_UINT (process) & _WAPI_PROCESS_UNHANDLED) == _WAPI_PROCESS_UNHANDLED) {
2053 /* This is a pseudo handle */
2054 pid = (pid_t)(GPOINTER_TO_UINT (process) & _WAPI_PROCESS_UNHANDLED_PID_MASK);
2055 } else {
2056 ok = _wapi_lookup_handle (process, WAPI_HANDLE_PROCESS,
2057 (gpointer *)&process_handle);
2058 if (ok == FALSE) {
2059 DEBUG ("%s: Can't find process %p", __func__, process);
2060
2061 return(FALSE);
2062 }
2063 pid = process_handle->id;
2064 proc_name = process_handle->proc_name;
2065 }
2066
2067 #if defined(PLATFORM_MACOSX) || defined(__OpenBSD__) || defined(__HAIKU__)
2068 {
2069 mods = load_modules ();
2070 #else
2071 if ((fp = open_process_map (pid, "r")) == NULL) {
2072 /* No /proc/<pid>/maps so just return the main module
2073 * shortcut for now
2074 */
2075 modules[0] = NULL;
2076 *needed = sizeof(gpointer);
2077 } else {
2078 mods = load_modules (fp);
2079 fclose (fp);
2080 #endif
2081 count = g_slist_length (mods);
2082
2083 /* count + 1 to leave slot 0 for the main module */
2084 *needed = sizeof(gpointer) * (count + 1);
2085
2086 /* Use the NULL shortcut, as the first line in
2087 * /proc/<pid>/maps isn't the executable, and we need
2088 * that first in the returned list. Check the module name
2089 * to see if it ends with the proc name and substitute
2090 * the first entry with it. FIXME if this turns out to
2091 * be a problem.
2092 */
2093 modules[0] = NULL;
2094 for (i = 0; i < (avail - 1) && i < count; i++) {
2095 module = (WapiProcModule *)g_slist_nth_data (mods, i);
2096 if (modules[0] != NULL)
2097 modules[i] = module->address_start;
2098 else if (match_procname_to_modulename (proc_name, module->filename))
2099 modules[0] = module->address_start;
2100 else
2101 modules[i + 1] = module->address_start;
2102 }
2103
2104 for (i = 0; i < count; i++) {
2105 free_procmodule (g_slist_nth_data (mods, i));
2106 }
2107 g_slist_free (mods);
2108 }
2109
2110 return(TRUE);
2111 }
2112
2113 static gchar *get_process_name_from_proc (pid_t pid)
2114 {
2115 #if defined(__OpenBSD__)
2116 int mib [6];
2117 size_t size;
2118 struct kinfo_proc2 *pi;
2119 #elif defined(PLATFORM_MACOSX)
2120 #if !(!defined (__mono_ppc__) && defined (TARGET_OSX))
2121 size_t size;
2122 struct kinfo_proc *pi;
2123 int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, pid };
2124 #endif
2125 #else
2126 FILE *fp;
2127 gchar *filename = NULL;
2128 #endif
2129 gchar buf[256];
2130 gchar *ret = NULL;
2131
2132 #if defined(PLATFORM_SOLARIS)
2133 filename = g_strdup_printf ("/proc/%d/psinfo", pid);
2134 if ((fp = fopen (filename, "r")) != NULL) {
2135 struct psinfo info;
2136 int nread;
2137
2138 nread = fread (&info, sizeof (info), 1, fp);
2139 if (nread == 1) {
2140 ret = g_strdup (info.pr_fname);
2141 }
2142
2143 fclose (fp);
2144 }
2145 g_free (filename);
2146 #elif defined(PLATFORM_MACOSX)
2147 #if !defined (__mono_ppc__) && defined (TARGET_OSX)
2148 /* No proc name on OSX < 10.5 nor ppc nor iOS */
2149 memset (buf, '\0', sizeof(buf));
2150 proc_name (pid, buf, sizeof(buf));
2151 if (strlen (buf) > 0)
2152 ret = g_strdup (buf);
2153 #else
2154 if (sysctl(mib, 4, NULL, &size, NULL, 0) < 0)
2155 return(ret);
2156
2157 if ((pi = malloc(size)) == NULL)
2158 return(ret);
2159
2160 if (sysctl (mib, 4, pi, &size, NULL, 0) < 0) {
2161 if (errno == ENOMEM) {
2162 free(pi);
2163 DEBUG ("%s: Didn't allocate enough memory for kproc info", __func__);
2164 }
2165 return(ret);
2166 }
2167
2168 if (strlen (pi->kp_proc.p_comm) > 0)
2169 ret = g_strdup (pi->kp_proc.p_comm);
2170
2171 free(pi);
2172 #endif
2173 #elif defined(__OpenBSD__)
2174 mib [0] = CTL_KERN;
2175 mib [1] = KERN_PROC2;
2176 mib [2] = KERN_PROC_PID;
2177 mib [3] = pid;
2178 mib [4] = sizeof(struct kinfo_proc2);
2179 mib [5] = 0;
2180
2181 retry:
2182 if (sysctl(mib, 6, NULL, &size, NULL, 0) < 0)
2183 return(ret);
2184
2185 if ((pi = malloc(size)) == NULL)
2186 return(ret);
2187
2188 mib[5] = (int)(size / sizeof(struct kinfo_proc2));
2189
2190 if ((sysctl (mib, 6, pi, &size, NULL, 0) < 0) ||
2191 (size != sizeof (struct kinfo_proc2))) {
2192 if (errno == ENOMEM) {
2193 free(pi);
2194 goto retry;
2195 }
2196 return(ret);
2197 }
2198
2199 if (strlen (pi->p_comm) > 0)
2200 ret = g_strdup (pi->p_comm);
2201
2202 free(pi);
2203 #elif defined(__HAIKU__)
2204 image_info imageInfo;
2205 int32 cookie = 0;
2206
2207 if (get_next_image_info ((team_id)pid, &cookie, &imageInfo) == B_OK) {
2208 ret = g_strdup (imageInfo.name);
2209 }
2210 #else
2211 memset (buf, '\0', sizeof(buf));
2212 filename = g_strdup_printf ("/proc/%d/exe", pid);
2213 if (readlink (filename, buf, 255) > 0) {
2214 ret = g_strdup (buf);
2215 }
2216 g_free (filename);
2217
2218 if (ret != NULL) {
2219 return(ret);
2220 }
2221
2222 filename = g_strdup_printf ("/proc/%d/cmdline", pid);
2223 if ((fp = fopen (filename, "r")) != NULL) {
2224 if (fgets (buf, 256, fp) != NULL) {
2225 ret = g_strdup (buf);
2226 }
2227
2228 fclose (fp);
2229 }
2230 g_free (filename);
2231
2232 if (ret != NULL) {
2233 return(ret);
2234 }
2235
2236 filename = g_strdup_printf ("/proc/%d/stat", pid);
2237 if ((fp = fopen (filename, "r")) != NULL) {
2238 if (fgets (buf, 256, fp) != NULL) {
2239 gchar *start, *end;
2240
2241 start = strchr (buf, '(');
2242 if (start != NULL) {
2243 end = strchr (start + 1, ')');
2244
2245 if (end != NULL) {
2246 ret = g_strndup (start + 1,
2247 end - start - 1);
2248 }
2249 }
2250 }
2251
2252 fclose (fp);
2253 }
2254 g_free (filename);
2255 #endif
2256
2257 return ret;
2258 }
2259
2260 static guint32 get_module_name (gpointer process, gpointer module,
2261 gunichar2 *basename, guint32 size,
2262 gboolean base)
2263 {
2264 struct _WapiHandle_process *process_handle;
2265 gboolean ok;
2266 pid_t pid;
2267 gunichar2 *procname;
2268 gchar *procname_ext = NULL;
2269 glong len;
2270 gsize bytes;
2271 #if !defined(__OpenBSD__) && !defined(PLATFORM_MACOSX)
2272 FILE *fp;
2273 #endif
2274 GSList *mods = NULL;
2275 WapiProcModule *found_module;
2276 guint32 count;
2277 int i;
2278 gchar *proc_name = NULL;
2279
2280 mono_once (&process_current_once, process_set_current);
2281
2282 DEBUG ("%s: Getting module base name, process handle %p module %p",
2283 __func__, process, module);
2284
2285 size = size*sizeof(gunichar2); /* adjust for unicode characters */
2286
2287 if (basename == NULL || size == 0) {
2288 return(0);
2289 }
2290
2291 if ((GPOINTER_TO_UINT (process) & _WAPI_PROCESS_UNHANDLED) == _WAPI_PROCESS_UNHANDLED) {
2292 /* This is a pseudo handle */
2293 pid = (pid_t)(GPOINTER_TO_UINT (process) & _WAPI_PROCESS_UNHANDLED_PID_MASK);
2294 proc_name = get_process_name_from_proc (pid);
2295 } else {
2296 ok = _wapi_lookup_handle (process, WAPI_HANDLE_PROCESS,
2297 (gpointer *)&process_handle);
2298 if (ok == FALSE) {
2299 DEBUG ("%s: Can't find process %p", __func__,
2300 process);
2301
2302 return(0);
2303 }
2304 pid = process_handle->id;
2305 proc_name = g_strdup (process_handle->proc_name);
2306 }
2307
2308 /* Look up the address in /proc/<pid>/maps */
2309 #if defined(PLATFORM_MACOSX) || defined(__OpenBSD__) || defined(__HAIKU__)
2310 {
2311 mods = load_modules ();
2312 #else
2313 if ((fp = open_process_map (pid, "r")) == NULL) {
2314 if (errno == EACCES && module == NULL && base == TRUE) {
2315 procname_ext = get_process_name_from_proc (pid);
2316 } else {
2317 /* No /proc/<pid>/maps, so just return failure
2318 * for now
2319 */
2320 g_free (proc_name);
2321 return(0);
2322 }
2323 } else {
2324 mods = load_modules (fp);
2325 fclose (fp);
2326 #endif
2327 count = g_slist_length (mods);
2328
2329 /* If module != NULL compare the address.
2330 * If module == NULL we are looking for the main module.
2331 * The best we can do for now check it the module name end with the process name.
2332 */
2333 for (i = 0; i < count; i++) {
2334 found_module = (WapiProcModule *)g_slist_nth_data (mods, i);
2335 if (procname_ext == NULL &&
2336 ((module == NULL && match_procname_to_modulename (proc_name, found_module->filename)) ||
2337 (module != NULL && found_module->address_start == module))) {
2338 if (base) {
2339 procname_ext = g_path_get_basename (found_module->filename);
2340 } else {
2341 procname_ext = g_strdup (found_module->filename);
2342 }
2343 }
2344
2345 free_procmodule (found_module);
2346 }
2347
2348 if (procname_ext == NULL)
2349 {
2350 /* If it's *still* null, we might have hit the
2351 * case where reading /proc/$pid/maps gives an
2352 * empty file for this user.
2353 */
2354 procname_ext = get_process_name_from_proc (pid);
2355 }
2356
2357 g_slist_free (mods);
2358 g_free (proc_name);
2359 }
2360
2361 if (procname_ext != NULL) {
2362 DEBUG ("%s: Process name is [%s]", __func__,
2363 procname_ext);
2364
2365 procname = mono_unicode_from_external (procname_ext, &bytes);
2366 if (procname == NULL) {
2367 /* bugger */
2368 g_free (procname_ext);
2369 return(0);
2370 }
2371
2372 len = (bytes / 2);
2373
2374 /* Add the terminator */
2375 bytes += 2;
2376
2377 if (size < bytes) {
2378 DEBUG ("%s: Size %d smaller than needed (%ld); truncating", __func__, size, bytes);
2379
2380 memcpy (basename, procname, size);
2381 } else {
2382 DEBUG ("%s: Size %d larger than needed (%ld)",
2383 __func__, size, bytes);
2384
2385 memcpy (basename, procname, bytes);
2386 }
2387
2388 g_free (procname);
2389 g_free (procname_ext);
2390
2391 return(len);
2392 }
2393
2394 return(0);
2395 }
2396
2397 guint32 GetModuleBaseName (gpointer process, gpointer module,
2398 gunichar2 *basename, guint32 size)
2399 {
2400 return(get_module_name (process, module, basename, size, TRUE));
2401 }
2402
2403 guint32 GetModuleFileNameEx (gpointer process, gpointer module,
2404 gunichar2 *filename, guint32 size)
2405 {
2406 return(get_module_name (process, module, filename, size, FALSE));
2407 }
2408
2409 gboolean GetModuleInformation (gpointer process, gpointer module,
2410 WapiModuleInfo *modinfo, guint32 size)
2411 {
2412 struct _WapiHandle_process *process_handle;
2413 gboolean ok;
2414 pid_t pid;
2415 #if !defined(__OpenBSD__) && !defined(PLATFORM_MACOSX)
2416 FILE *fp;
2417 #endif
2418 GSList *mods = NULL;
2419 WapiProcModule *found_module;
2420 guint32 count;
2421 int i;
2422 gboolean ret = FALSE;
2423 gchar *proc_name = NULL;
2424
2425 mono_once (&process_current_once, process_set_current);
2426
2427 DEBUG ("%s: Getting module info, process handle %p module %p",
2428 __func__, process, module);
2429
2430 if (modinfo == NULL || size < sizeof(WapiModuleInfo)) {
2431 return(FALSE);
2432 }
2433
2434 if ((GPOINTER_TO_UINT (process) & _WAPI_PROCESS_UNHANDLED) == _WAPI_PROCESS_UNHANDLED) {
2435 /* This is a pseudo handle */
2436 pid = (pid_t)(GPOINTER_TO_UINT (process) & _WAPI_PROCESS_UNHANDLED_PID_MASK);
2437 proc_name = get_process_name_from_proc (pid);
2438 } else {
2439 ok = _wapi_lookup_handle (process, WAPI_HANDLE_PROCESS,
2440 (gpointer *)&process_handle);
2441 if (ok == FALSE) {
2442 DEBUG ("%s: Can't find process %p", __func__,
2443 process);
2444
2445 return(FALSE);
2446 }
2447 pid = process_handle->id;
2448 proc_name = g_strdup (process_handle->proc_name);
2449 }
2450
2451 #if defined(PLATFORM_MACOSX) || defined(__OpenBSD__) || defined(__HAIKU__)
2452 {
2453 mods = load_modules ();
2454 #else
2455 /* Look up the address in /proc/<pid>/maps */
2456 if ((fp = open_process_map (pid, "r")) == NULL) {
2457 /* No /proc/<pid>/maps, so just return failure
2458 * for now
2459 */
2460 g_free (proc_name);
2461 return(FALSE);
2462 } else {
2463 mods = load_modules (fp);
2464 fclose (fp);
2465 #endif
2466 count = g_slist_length (mods);
2467
2468 /* If module != NULL compare the address.
2469 * If module == NULL we are looking for the main module.
2470 * The best we can do for now check it the module name end with the process name.
2471 */
2472 for (i = 0; i < count; i++) {
2473 found_module = (WapiProcModule *)g_slist_nth_data (mods, i);
2474 if ( ret == FALSE &&
2475 ((module == NULL && match_procname_to_modulename (proc_name, found_module->filename)) ||
2476 (module != NULL && found_module->address_start == module))) {
2477 modinfo->lpBaseOfDll = found_module->address_start;
2478 modinfo->SizeOfImage = (gsize)(found_module->address_end) - (gsize)(found_module->address_start);
2479 modinfo->EntryPoint = found_module->address_offset;
2480 ret = TRUE;
2481 }
2482
2483 free_procmodule (found_module);
2484 }
2485
2486 g_slist_free (mods);
2487 g_free (proc_name);
2488 }
2489
2490 return(ret);
2491 }
2492
2493 gboolean GetProcessWorkingSetSize (gpointer process, size_t *min, size_t *max)
2494 {
2495 struct _WapiHandle_process *process_handle;
2496 gboolean ok;
2497
2498 mono_once (&process_current_once, process_set_current);
2499
2500 if(min==NULL || max==NULL) {
2501 /* Not sure if w32 allows NULLs here or not */
2502 return(FALSE);
2503 }
2504
2505 if ((GPOINTER_TO_UINT (process) & _WAPI_PROCESS_UNHANDLED) == _WAPI_PROCESS_UNHANDLED) {
2506 /* This is a pseudo handle, so just fail for now
2507 */
2508 return(FALSE);
2509 }
2510
2511 ok=_wapi_lookup_handle (process, WAPI_HANDLE_PROCESS,
2512 (gpointer *)&process_handle);
2513 if(ok==FALSE) {
2514 DEBUG ("%s: Can't find process %p", __func__, process);
2515
2516 return(FALSE);
2517 }
2518
2519 *min=process_handle->min_working_set;
2520 *max=process_handle->max_working_set;
2521
2522 return(TRUE);
2523 }
2524
2525 gboolean SetProcessWorkingSetSize (gpointer process, size_t min, size_t max)
2526 {
2527 struct _WapiHandle_process *process_handle;
2528 gboolean ok;
2529
2530 mono_once (&process_current_once, process_set_current);
2531
2532 if ((GPOINTER_TO_UINT (process) & _WAPI_PROCESS_UNHANDLED) == _WAPI_PROCESS_UNHANDLED) {
2533 /* This is a pseudo handle, so just fail for now
2534 */
2535 return(FALSE);
2536 }
2537
2538 ok=_wapi_lookup_handle (process, WAPI_HANDLE_PROCESS,
2539 (gpointer *)&process_handle);
2540 if(ok==FALSE) {
2541 DEBUG ("%s: Can't find process %p", __func__, process);
2542
2543 return(FALSE);
2544 }
2545
2546 process_handle->min_working_set=min;
2547 process_handle->max_working_set=max;
2548
2549 return(TRUE);
2550 }
2551
2552
2553 gboolean
2554 TerminateProcess (gpointer process, gint32 exitCode)
2555 {
2556 struct _WapiHandle_process *process_handle;
2557 gboolean ok;
2558 int signo;
2559 int ret;
2560 pid_t pid;
2561
2562 if ((GPOINTER_TO_UINT (process) & _WAPI_PROCESS_UNHANDLED) == _WAPI_PROCESS_UNHANDLED) {
2563 /* This is a pseudo handle */
2564 pid = (pid_t)(GPOINTER_TO_UINT (process) & _WAPI_PROCESS_UNHANDLED_PID_MASK);
2565 } else {
2566 ok = _wapi_lookup_handle (process, WAPI_HANDLE_PROCESS,
2567 (gpointer *) &process_handle);
2568
2569 if (ok == FALSE) {
2570 DEBUG ("%s: Can't find process %p", __func__,
2571 process);
2572 SetLastError (ERROR_INVALID_HANDLE);
2573 return FALSE;
2574 }
2575 pid = process_handle->id;
2576 }
2577
2578 signo = (exitCode == -1) ? SIGKILL : SIGTERM;
2579 ret = kill (pid, signo);
2580 if (ret == -1) {
2581 switch (errno) {
2582 case EINVAL:
2583 SetLastError (ERROR_INVALID_PARAMETER);
2584 break;
2585 case EPERM:
2586 SetLastError (ERROR_ACCESS_DENIED);
2587 break;
2588 case ESRCH:
2589 SetLastError (ERROR_PROC_NOT_FOUND);
2590 break;
2591 default:
2592 SetLastError (ERROR_GEN_FAILURE);
2593 }
2594 }
2595
2596 return (ret == 0);
2597 }
2598
2599 guint32
2600 GetPriorityClass (gpointer process)
2601 {
2602 #ifdef HAVE_GETPRIORITY
2603 struct _WapiHandle_process *process_handle;
2604 gboolean ok;
2605 int ret;
2606 pid_t pid;
2607
2608 if ((GPOINTER_TO_UINT (process) & _WAPI_PROCESS_UNHANDLED) == _WAPI_PROCESS_UNHANDLED) {
2609 /* This is a pseudo handle */
2610 pid = (pid_t)(GPOINTER_TO_UINT (process) & _WAPI_PROCESS_UNHANDLED_PID_MASK);
2611 } else {
2612 ok = _wapi_lookup_handle (process, WAPI_HANDLE_PROCESS,
2613 (gpointer *) &process_handle);
2614
2615 if (!ok) {
2616 SetLastError (ERROR_INVALID_HANDLE);
2617 return FALSE;
2618 }
2619 pid = process_handle->id;
2620 }
2621
2622 errno = 0;
2623 ret = getpriority (PRIO_PROCESS, pid);
2624 if (ret == -1 && errno != 0) {
2625 switch (errno) {
2626 case EPERM:
2627 case EACCES:
2628 SetLastError (ERROR_ACCESS_DENIED);
2629 break;
2630 case ESRCH:
2631 SetLastError (ERROR_PROC_NOT_FOUND);
2632 break;
2633 default:
2634 SetLastError (ERROR_GEN_FAILURE);
2635 }
2636 return FALSE;
2637 }
2638
2639 if (ret == 0)
2640 return NORMAL_PRIORITY_CLASS;
2641 else if (ret < -15)
2642 return REALTIME_PRIORITY_CLASS;
2643 else if (ret < -10)
2644 return HIGH_PRIORITY_CLASS;
2645 else if (ret < 0)
2646 return ABOVE_NORMAL_PRIORITY_CLASS;
2647 else if (ret > 10)
2648 return IDLE_PRIORITY_CLASS;
2649 else if (ret > 0)
2650 return BELOW_NORMAL_PRIORITY_CLASS;
2651
2652 return NORMAL_PRIORITY_CLASS;
2653 #else
2654 SetLastError (ERROR_NOT_SUPPORTED);
2655 return 0;
2656 #endif
2657 }
2658
2659 gboolean
2660 SetPriorityClass (gpointer process, guint32 priority_class)
2661 {
2662 #ifdef HAVE_SETPRIORITY
2663 struct _WapiHandle_process *process_handle;
2664 gboolean ok;
2665 int ret;
2666 int prio;
2667 pid_t pid;
2668
2669 if ((GPOINTER_TO_UINT (process) & _WAPI_PROCESS_UNHANDLED) == _WAPI_PROCESS_UNHANDLED) {
2670 /* This is a pseudo handle */
2671 pid = (pid_t)(GPOINTER_TO_UINT (process) & _WAPI_PROCESS_UNHANDLED_PID_MASK);
2672 } else {
2673 ok = _wapi_lookup_handle (process, WAPI_HANDLE_PROCESS,
2674 (gpointer *) &process_handle);
2675
2676 if (!ok) {
2677 SetLastError (ERROR_INVALID_HANDLE);
2678 return FALSE;
2679 }
2680 pid = process_handle->id;
2681 }
2682
2683 switch (priority_class) {
2684 case IDLE_PRIORITY_CLASS:
2685 prio = 19;
2686 break;
2687 case BELOW_NORMAL_PRIORITY_CLASS:
2688 prio = 10;
2689 break;
2690 case NORMAL_PRIORITY_CLASS:
2691 prio = 0;
2692 break;
2693 case ABOVE_NORMAL_PRIORITY_CLASS:
2694 prio = -5;
2695 break;
2696 case HIGH_PRIORITY_CLASS:
2697 prio = -11;
2698 break;
2699 case REALTIME_PRIORITY_CLASS:
2700 prio = -20;
2701 break;
2702 default:
2703 SetLastError (ERROR_INVALID_PARAMETER);
2704 return FALSE;
2705 }
2706
2707 ret = setpriority (PRIO_PROCESS, pid, prio);
2708 if (ret == -1) {
2709 switch (errno) {
2710 case EPERM:
2711 case EACCES:
2712 SetLastError (ERROR_ACCESS_DENIED);
2713 break;
2714 case ESRCH:
2715 SetLastError (ERROR_PROC_NOT_FOUND);
2716 break;
2717 default:
2718 SetLastError (ERROR_GEN_FAILURE);
2719 }
2720 }
2721
2722 return ret == 0;
2723 #else
2724 SetLastError (ERROR_NOT_SUPPORTED);
2725 return FALSE;
2726 #endif
2727 }
2728
2729 static void
2730 mono_processes_cleanup (void)
2731 {
2732 struct MonoProcess *mp;
2733 struct MonoProcess *prev = NULL;
2734 struct MonoProcess *candidate = NULL;
2735 gpointer unref_handle;
2736 int spin;
2737
2738 DEBUG ("%s", __func__);
2739
2740 /* Ensure we're not in here in multiple threads at once, nor recursive. */
2741 if (InterlockedCompareExchange (&mono_processes_cleaning_up, 1, 0) != 0)
2742 return;
2743
2744 mp = mono_processes;
2745 while (mp != NULL) {
2746 if (mp->pid == 0 && mp->handle != NULL) {
2747 /* This process has exited and we need to remove the artifical ref
2748 * on the handle */
2749 mono_mutex_lock (&mono_processes_mutex);
2750 unref_handle = mp->handle;
2751 mp->handle = NULL;
2752 mono_mutex_unlock (&mono_processes_mutex);
2753 if (unref_handle)
2754 _wapi_handle_unref (unref_handle);
2755 continue;
2756 }
2757 mp = mp->next;
2758 }
2759
2760 mp = mono_processes;
2761 spin = 0;
2762 while (mp != NULL) {
2763 if ((mp->handle_count == 0 && mp->pid == 0) || candidate != NULL) {
2764 if (spin > 0) {
2765 _wapi_handle_spin (spin);
2766 spin <<= 1;
2767 }
2768
2769 /* We've found a candidate */
2770 mono_mutex_lock (&mono_processes_mutex);
2771 if (candidate == NULL) {
2772 /* unlink it */
2773 if (mp == mono_processes) {
2774 mono_processes = mp->next;
2775 } else {
2776 prev->next = mp->next;
2777 }
2778 candidate = mp;
2779 }
2780
2781 /* It's still safe to traverse the structure.*/
2782 mono_memory_barrier ();
2783
2784 if (mono_processes_read_lock != 0) {
2785 /* The sigchld handler is watching us. Spin a bit and try again */
2786 if (spin == 0) {
2787 spin = 1;
2788 } else if (spin >= 8) {
2789 /* Just give up for now */
2790 mono_mutex_unlock (&mono_processes_mutex);
2791 break;
2792 }
2793 } else {
2794 /* We've modified the list of processes, and we know the sigchld handler
2795 * isn't executing, so even if it executes at any moment, it'll see the
2796 * new version of the list. So now we can free the candidate. */
2797 DEBUG ("%s: freeing candidate %p", __func__, candidate);
2798 mp = candidate->next;
2799 MONO_SEM_DESTROY (&candidate->exit_sem);
2800 g_free (candidate);
2801 candidate = NULL;
2802 }
2803
2804 mono_mutex_unlock (&mono_processes_mutex);
2805
2806 continue;
2807 }
2808 spin = 0;
2809 prev = mp;
2810 mp = mp->next;
2811 }
2812
2813 DEBUG ("%s done", __func__);
2814
2815 InterlockedDecrement (&mono_processes_cleaning_up);
2816 }
2817
2818 static void
2819 process_close (gpointer handle, gpointer data)
2820 {
2821 struct _WapiHandle_process *process_handle;
2822
2823 DEBUG ("%s", __func__);
2824
2825 process_handle = (struct _WapiHandle_process *) data;
2826 if (process_handle->mono_process && process_handle->self == _wapi_getpid ())
2827 InterlockedDecrement (&process_handle->mono_process->handle_count);
2828 mono_processes_cleanup ();
2829 }
2830
2831 #if HAVE_SIGACTION
2832 MONO_SIGNAL_HANDLER_FUNC (static, mono_sigchld_signal_handler, (int _dummy, siginfo_t *info, void *context))
2833 {
2834 int status;
2835 int pid;
2836 struct MonoProcess *p;
2837
2838 #if DEBUG
2839 fprintf (stdout, "SIG CHILD handler for pid: %i\n", info->si_pid);
2840 #endif
2841
2842 InterlockedIncrement (&mono_processes_read_lock);
2843
2844 do {
2845 do {
2846 pid = waitpid (-1, &status, WNOHANG);
2847 } while (pid == -1 && errno == EINTR);
2848
2849 if (pid <= 0)
2850 break;
2851
2852 #if DEBUG
2853 fprintf (stdout, "child ended: %i", pid);
2854 #endif
2855 p = mono_processes;
2856 while (p != NULL) {
2857 if (p->pid == pid) {
2858 p->pid = 0; /* this pid doesn't exist anymore, clear it */
2859 p->status = status;
2860 MONO_SEM_POST (&p->exit_sem);
2861 break;
2862 }
2863 p = p->next;
2864 }
2865 } while (1);
2866
2867 InterlockedDecrement (&mono_processes_read_lock);
2868
2869 #if DEBUG
2870 fprintf (stdout, "SIG CHILD handler: done looping.");
2871 #endif
2872 }
2873
2874 #endif
2875
2876 static void process_add_sigchld_handler (void)
2877 {
2878 #if HAVE_SIGACTION
2879 struct sigaction sa;
2880
2881 sa.sa_sigaction = mono_sigchld_signal_handler;
2882 sigemptyset (&sa.sa_mask);
2883 sa.sa_flags = SA_NOCLDSTOP | SA_SIGINFO;
2884 g_assert (sigaction (SIGCHLD, &sa, &previous_chld_sa) != -1);
2885 DEBUG ("Added SIGCHLD handler");
2886 #endif
2887 }
2888
2889 static guint32 process_wait (gpointer handle, guint32 timeout, gboolean alertable)
2890 {
2891 struct _WapiHandle_process *process_handle;
2892 gboolean ok;
2893 pid_t pid, ret;
2894 int status;
2895 guint32 start;
2896 guint32 now;
2897 struct MonoProcess *mp;
2898 gboolean spin;
2899 gpointer current_thread;
2900
2901 current_thread = _wapi_thread_handle_from_id (pthread_self ());
2902 if (current_thread == NULL) {
2903 SetLastError (ERROR_INVALID_HANDLE);
2904 return WAIT_FAILED;
2905 }
2906
2907 /* FIXME: We can now easily wait on processes that aren't our own children,
2908 * but WaitFor*Object won't call us for pseudo handles. */
2909 g_assert ((GPOINTER_TO_UINT (handle) & _WAPI_PROCESS_UNHANDLED) != _WAPI_PROCESS_UNHANDLED);
2910
2911 DEBUG ("%s (%p, %u)", __func__, handle, timeout);
2912
2913 ok = _wapi_lookup_handle (handle, WAPI_HANDLE_PROCESS, (gpointer *)&process_handle);
2914 if (ok == FALSE) {
2915 g_warning ("%s: error looking up process handle %p", __func__, handle);
2916 return WAIT_FAILED;
2917 }
2918
2919 if (process_handle->exited) {
2920 /* We've already done this one */
2921 DEBUG ("%s (%p, %u): Process already exited", __func__, handle, timeout);
2922 return WAIT_OBJECT_0;
2923 }
2924
2925 pid = process_handle->id;
2926
2927 DEBUG ("%s (%p, %u): PID: %d", __func__, handle, timeout, pid);
2928
2929 /* We don't need to lock mono_processes here, the entry
2930 * has a handle_count > 0 which means it will not be freed. */
2931 mp = process_handle->mono_process;
2932 if (mp && process_handle->self != _wapi_getpid ()) {
2933 /* mono_process points to memory in another process' address space: we can't use it */
2934 mp = NULL;
2935 }
2936
2937 start = mono_msec_ticks ();
2938 now = start;
2939 spin = mp == NULL;
2940
2941 while (1) {
2942 if (mp != NULL) {
2943 /* We have a semaphore we can wait on */
2944 if (timeout != INFINITE) {
2945 DEBUG ("%s (%p, %u): waiting on semaphore for %li ms...",
2946 __func__, handle, timeout, (timeout - (now - start)));
2947
2948 ret = MONO_SEM_TIMEDWAIT_ALERTABLE (&mp->exit_sem, (timeout - (now - start)), alertable);
2949 } else {
2950 DEBUG ("%s (%p, %u): waiting on semaphore forever...",
2951 __func__, handle, timeout);
2952 ret = MONO_SEM_WAIT_ALERTABLE (&mp->exit_sem, alertable);
2953 }
2954
2955 if (ret == -1 && errno != EINTR && errno != ETIMEDOUT) {
2956 DEBUG ("%s (%p, %u): sem_timedwait failure: %s",
2957 __func__, handle, timeout, g_strerror (errno));
2958 /* Should we return a failure here? */
2959 }
2960
2961 if (ret == 0) {
2962 /* Success, process has exited */
2963 MONO_SEM_POST (&mp->exit_sem);
2964 break;
2965 }
2966 } else {
2967 /* We did not create this process, so we can't waidpid / sem_wait it.
2968 * We need to poll for the pid existence */
2969 DEBUG ("%s (%p, %u): polling on pid...", __func__, handle, timeout);
2970 if (!is_pid_valid (pid)) {
2971 /* Success, process has exited */
2972 break;
2973 }
2974 }
2975
2976 if (timeout == 0) {
2977 DEBUG ("%s (%p, %u): WAIT_TIMEOUT (timeout = 0)", __func__, handle, timeout);
2978 return WAIT_TIMEOUT;
2979 }
2980
2981 now = mono_msec_ticks ();
2982 if (now - start >= timeout) {
2983 DEBUG ("%s (%p, %u): WAIT_TIMEOUT", __func__, handle, timeout);
2984 return WAIT_TIMEOUT;
2985 }
2986
2987 if (spin) {
2988 /* "timeout - (now - start)" will not underflow, since timeout is always >=0,
2989 * and we passed the check just above */
2990 _wapi_handle_spin (MIN (100, timeout - (now - start)));
2991 }
2992
2993 if (alertable && _wapi_thread_apc_pending (current_thread)) {
2994 DEBUG ("%s (%p, %u): WAIT_IO_COMPLETION", __func__, handle, timeout);
2995 return WAIT_IO_COMPLETION;
2996 }
2997 }
2998
2999 /* Process must have exited */
3000 DEBUG ("%s (%p, %u): Waited successfully", __func__, handle, timeout);
3001
3002 ret = _wapi_handle_lock_shared_handles ();
3003 g_assert (ret == 0);
3004
3005 status = mp ? mp->status : 0;
3006 if (WIFSIGNALED (status)) {
3007 process_handle->exitstatus = 128 + WTERMSIG (status);
3008 } else {
3009 process_handle->exitstatus = WEXITSTATUS (status);
3010 }
3011 _wapi_time_t_to_filetime (time (NULL), &process_handle->exit_time);
3012
3013 process_handle->exited = TRUE;
3014
3015 DEBUG ("%s (%p, %u): Setting pid %d signalled, exit status %d",
3016 __func__, handle, timeout, process_handle->id, process_handle->exitstatus);
3017
3018 _wapi_shared_handle_set_signal_state (handle, TRUE);
3019
3020 _wapi_handle_unlock_shared_handles ();
3021
3022 return WAIT_OBJECT_0;
3023 }
3024
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