D-Bus  1.13.16
dbus-spawn-win.c
1 #include <config.h>
2 
3 //#define SPAWN_DEBUG
4 
5 #if !defined(SPAWN_DEBUG) || defined(_MSC_VER)
6 #define PING()
7 #else
8 #define PING() fprintf (stderr, "%s:%s:%d\n", __FILE__, __FUNCTION__, __LINE__); fflush (stderr)
9 #endif
10 
11 #include <stdio.h>
12 
13 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
14 /* dbus-spawn-win32.c Wrapper around g_spawn
15  *
16  * Copyright (C) 2002, 2003, 2004 Red Hat, Inc.
17  * Copyright (C) 2003 CodeFactory AB
18  * Copyright (C) 2005 Novell, Inc.
19  *
20  * Licensed under the Academic Free License version 2.1
21  *
22  * This program is free software; you can redistribute it and/or modify
23  * it under the terms of the GNU General Public License as published by
24  * the Free Software Foundation; either version 2 of the License, or
25  * (at your option) any later version.
26  *
27  * This program is distributed in the hope that it will be useful,
28  * but WITHOUT ANY WARRANTY; without even the implied warranty of
29  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30  * GNU General Public License for more details.
31  *
32  * You should have received a copy of the GNU General Public License
33  * along with this program; if not, write to the Free Software
34  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
35  *
36  */
37 #include "dbus-spawn.h"
38 #include "dbus-sysdeps.h"
39 #include "dbus-sysdeps-win.h"
40 #include "dbus-internals.h"
41 #include "dbus-test.h"
42 #include "dbus-protocol.h"
43 
44 #define WIN32_LEAN_AND_MEAN
45 #include <windows.h>
46 //#define STRICT
47 //#include <windows.h>
48 //#undef STRICT
49 #include <winsock2.h>
50 #undef interface
51 
52 #include <stdlib.h>
53 
54 #ifndef DBUS_WINCE
55 #include <process.h>
56 #endif
57 
61 struct DBusBabysitter
62  {
64  char *log_name;
65 
66  HANDLE thread_handle;
67  HANDLE child_handle;
68  DBusSocket socket_to_babysitter; /* Connection to the babysitter thread */
69  DBusSocket socket_to_main;
70 
73  DBusBabysitterFinishedFunc finished_cb;
74  void *finished_data;
75 
76  dbus_bool_t have_spawn_errno;
77  int spawn_errno;
79  int child_status;
80  };
81 
82 static void
83 _dbus_babysitter_trace_ref (DBusBabysitter *sitter,
84  int old_refcount,
85  int new_refcount,
86  const char *why)
87 {
88 #ifdef DBUS_ENABLE_VERBOSE_MODE
89  static int enabled = -1;
90 
91  _dbus_trace_ref ("DBusBabysitter", sitter, old_refcount, new_refcount, why,
92  "DBUS_BABYSITTER_TRACE", &enabled);
93 #endif
94 }
95 
96 static DBusBabysitter*
97 _dbus_babysitter_new (void)
98 {
99  DBusBabysitter *sitter;
100  dbus_int32_t old_refcount;
101 
102  sitter = dbus_new0 (DBusBabysitter, 1);
103  if (sitter == NULL)
104  return NULL;
105 
106  old_refcount = _dbus_atomic_inc (&sitter->refcount);
107 
108  _dbus_babysitter_trace_ref (sitter, old_refcount, old_refcount+1, __FUNCTION__);
109 
110  sitter->child_handle = NULL;
111 
112  sitter->socket_to_babysitter = sitter->socket_to_main = _dbus_socket_get_invalid ();
113 
114  sitter->watches = _dbus_watch_list_new ();
115  if (sitter->watches == NULL)
116  {
117  _dbus_babysitter_unref (sitter);
118  return NULL;
119  }
120 
121  sitter->have_spawn_errno = FALSE;
122  sitter->have_child_status = FALSE;
123 
124  return sitter;
125 }
126 
135 {
136  dbus_int32_t old_refcount;
137  PING();
138  _dbus_assert (sitter != NULL);
139 
140  old_refcount = _dbus_atomic_inc (&sitter->refcount);
141  _dbus_assert (old_refcount > 0);
142  _dbus_babysitter_trace_ref (sitter, old_refcount, old_refcount+1, __FUNCTION__);
143 
144  return sitter;
145 }
146 
147 static void
148 close_socket_to_babysitter (DBusBabysitter *sitter)
149 {
150  _dbus_verbose ("Closing babysitter\n");
151 
152  if (sitter->sitter_watch != NULL)
153  {
154  _dbus_assert (sitter->watches != NULL);
158  sitter->sitter_watch = NULL;
159  }
160 
161  if (sitter->socket_to_babysitter.sock != INVALID_SOCKET)
162  {
164  sitter->socket_to_babysitter.sock = INVALID_SOCKET;
165  }
166 }
167 
173 void
175 {
176  dbus_int32_t old_refcount;
177 
178  PING();
179  _dbus_assert (sitter != NULL);
180 
181  old_refcount = _dbus_atomic_dec (&sitter->refcount);
182  _dbus_assert (old_refcount > 0);
183  _dbus_babysitter_trace_ref (sitter, old_refcount, old_refcount-1, __FUNCTION__);
184 
185  if (old_refcount == 1)
186  {
187  close_socket_to_babysitter (sitter);
188 
189  if (sitter->socket_to_main.sock != INVALID_SOCKET)
190  {
191  _dbus_close_socket (sitter->socket_to_main, NULL);
192  sitter->socket_to_main.sock = INVALID_SOCKET;
193  }
194 
195  if (sitter->child_handle != NULL)
196  {
197  CloseHandle (sitter->child_handle);
198  sitter->child_handle = NULL;
199  }
200 
201  if (sitter->sitter_watch)
202  {
205  sitter->sitter_watch = NULL;
206  }
207 
208  if (sitter->watches)
209  _dbus_watch_list_free (sitter->watches);
210 
211  if (sitter->thread_handle)
212  {
213  CloseHandle (sitter->thread_handle);
214  sitter->thread_handle = NULL;
215  }
216 
217  dbus_free (sitter->log_name);
218 
219  dbus_free (sitter);
220  }
221 }
222 
223 void
225 {
226  PING();
227  if (sitter->child_handle == NULL)
228  return; /* child is already dead, or we're so hosed we'll never recover */
229 
230  PING();
231  TerminateProcess (sitter->child_handle, 12345);
232 }
233 
241 {
242  PING();
243  return (sitter->child_handle == NULL);
244 }
245 
260  int *status)
261 {
262  if (!_dbus_babysitter_get_child_exited (sitter))
263  _dbus_assert_not_reached ("Child has not exited");
264 
265  if (!sitter->have_child_status ||
266  sitter->child_status == STILL_ACTIVE)
267  return FALSE;
268 
269  *status = sitter->child_status;
270  return TRUE;
271 }
272 
282 void
284  DBusError *error)
285 {
286  PING();
287  if (!_dbus_babysitter_get_child_exited (sitter))
288  return;
289 
290  PING();
291  if (sitter->have_spawn_errno)
292  {
293  char *emsg = _dbus_win_error_string (sitter->spawn_errno);
295  "Failed to execute program %s: %s",
296  sitter->log_name, emsg);
297  _dbus_win_free_error_string (emsg);
298  }
299  else if (sitter->have_child_status)
300  {
301  PING();
303  "Process %s exited with status %d",
304  sitter->log_name, sitter->child_status);
305  }
306  else
307  {
308  PING();
310  "Process %s exited, status unknown",
311  sitter->log_name);
312  }
313  PING();
314 }
315 
318  DBusAddWatchFunction add_function,
319  DBusRemoveWatchFunction remove_function,
320  DBusWatchToggledFunction toggled_function,
321  void *data,
322  DBusFreeFunction free_data_function)
323 {
324  PING();
325  return _dbus_watch_list_set_functions (sitter->watches,
326  add_function,
327  remove_function,
328  toggled_function,
329  data,
330  free_data_function);
331 }
332 
333 static dbus_bool_t
334 handle_watch (DBusWatch *watch,
335  unsigned int condition,
336  void *data)
337 {
338  DBusBabysitter *sitter = data;
339 
340  /* On Unix dbus-spawn uses a babysitter *process*, thus it has to
341  * actually send the exit statuses, error codes and whatnot through
342  * sockets and/or pipes. On Win32, the babysitter is jus a thread,
343  * so it can set the status fields directly in the babysitter struct
344  * just fine. The socket pipe is used just so we can watch it with
345  * select(), as soon as anything is written to it we know that the
346  * babysitter thread has recorded the status in the babysitter
347  * struct.
348  */
349 
350  PING();
351  close_socket_to_babysitter (sitter);
352  PING();
353 
354  if (_dbus_babysitter_get_child_exited (sitter) &&
355  sitter->finished_cb != NULL)
356  {
357  sitter->finished_cb (sitter, sitter->finished_data);
358  sitter->finished_cb = NULL;
359  }
360 
361  return TRUE;
362 }
363 
364 /* protect_argv lifted from GLib, relicensed by author, Tor Lillqvist */
365 static int
366 protect_argv (char * const *argv,
367  char ***new_argv)
368 {
369  int i;
370  int argc = 0;
371 
372  while (argv[argc])
373  ++argc;
374  *new_argv = dbus_malloc ((argc + 1) * sizeof (char *));
375  if (*new_argv == NULL)
376  return -1;
377 
378  for (i = 0; i < argc; i++)
379  (*new_argv)[i] = NULL;
380 
381  /* Quote each argv element if necessary, so that it will get
382  * reconstructed correctly in the C runtime startup code. Note that
383  * the unquoting algorithm in the C runtime is really weird, and
384  * rather different than what Unix shells do. See stdargv.c in the C
385  * runtime sources (in the Platform SDK, in src/crt).
386  *
387  * Note that an new_argv[0] constructed by this function should
388  * *not* be passed as the filename argument to a spawn* or exec*
389  * family function. That argument should be the real file name
390  * without any quoting.
391  */
392  for (i = 0; i < argc; i++)
393  {
394  const char *p = argv[i];
395  char *q;
396  int len = 0;
397  int need_dblquotes = FALSE;
398  while (*p)
399  {
400  if (*p == ' ' || *p == '\t')
401  need_dblquotes = TRUE;
402  else if (*p == '"')
403  len++;
404  else if (*p == '\\')
405  {
406  const char *pp = p;
407  while (*pp && *pp == '\\')
408  pp++;
409  if (*pp == '"')
410  len++;
411  }
412  len++;
413  p++;
414  }
415 
416  q = (*new_argv)[i] = dbus_malloc (len + need_dblquotes*2 + 1);
417 
418  if (q == NULL)
419  return -1;
420 
421 
422  p = argv[i];
423 
424  if (need_dblquotes)
425  *q++ = '"';
426 
427  while (*p)
428  {
429  if (*p == '"')
430  *q++ = '\\';
431  else if (*p == '\\')
432  {
433  const char *pp = p;
434  while (*pp && *pp == '\\')
435  pp++;
436  if (*pp == '"')
437  *q++ = '\\';
438  }
439  *q++ = *p;
440  p++;
441  }
442 
443  if (need_dblquotes)
444  *q++ = '"';
445  *q++ = '\0';
446  /* printf ("argv[%d]:%s, need_dblquotes:%s len:%d => %s\n", i, argv[i], need_dblquotes?"TRUE":"FALSE", len, (*new_argv)[i]); */
447  }
448  (*new_argv)[argc] = NULL;
449 
450  return argc;
451 }
452 
453 
454 /* From GPGME, relicensed by g10 Code GmbH. */
455 static char *
456 compose_string (char **strings, char separator)
457 {
458  int i;
459  int n = 0;
460  char *buf;
461  char *p;
462 
463  if (!strings || !strings[0])
464  return 0;
465  for (i = 0; strings[i]; i++)
466  n += strlen (strings[i]) + 1;
467  n++;
468 
469  buf = p = malloc (n);
470  if (!buf)
471  return NULL;
472  for (i = 0; strings[i]; i++)
473  {
474  strcpy (p, strings[i]);
475  p += strlen (strings[i]);
476  *(p++) = separator;
477  }
478  p--;
479  *(p++) = '\0';
480  *p = '\0';
481 
482  return buf;
483 }
484 
485 static char *
486 build_commandline (char **argv)
487 {
488  return compose_string (argv, ' ');
489 }
490 
491 static char *
492 build_env_string (char** envp)
493 {
494  return compose_string (envp, '\0');
495 }
496 
497 HANDLE
498 _dbus_spawn_program (const char *name,
499  char **argv,
500  char **envp)
501 {
502  PROCESS_INFORMATION pi = { NULL, 0, 0, 0 };
503  STARTUPINFOA si;
504  char *arg_string, *env_string;
505  BOOL result;
506 
507 #ifdef DBUS_WINCE
508  if (argv && argv[0])
509  arg_string = build_commandline (argv + 1);
510  else
511  arg_string = NULL;
512 #else
513  arg_string = build_commandline (argv);
514 #endif
515  if (!arg_string)
516  return INVALID_HANDLE_VALUE;
517 
518  env_string = build_env_string(envp);
519 
520  memset (&si, 0, sizeof (si));
521  si.cb = sizeof (si);
522 
523 #ifdef DBUS_ENABLE_VERBOSE_MODE
524  {
525  char *s = compose_string (envp, ';');
526  _dbus_verbose ("spawning '%s'' with args: '%s' env: '%s'\n", name, arg_string, s);
527  free (s);
528  }
529 #endif
530 
531 #ifdef DBUS_WINCE
532  result = CreateProcessA (name, arg_string, NULL, NULL, FALSE, 0,
533 #else
534  result = CreateProcessA (NULL, arg_string, NULL, NULL, FALSE, 0,
535 #endif
536  (LPVOID)env_string, NULL, &si, &pi);
537  free (arg_string);
538  if (env_string)
539  free (env_string);
540 
541  if (!result)
542  return INVALID_HANDLE_VALUE;
543 
544  CloseHandle (pi.hThread);
545  return pi.hProcess;
546 }
547 
548 
549 static DWORD __stdcall
550 babysitter (void *parameter)
551 {
552  int ret = 0;
553  DBusBabysitter *sitter = (DBusBabysitter *) parameter;
554 
555  PING();
556  if (sitter->child_handle != NULL)
557  {
558  DWORD status;
559 
560  PING();
561  // wait until process finished
562  WaitForSingleObject (sitter->child_handle, INFINITE);
563 
564  PING();
565  ret = GetExitCodeProcess (sitter->child_handle, &status);
566  if (ret)
567  {
568  sitter->child_status = status;
569  sitter->have_child_status = TRUE;
570  }
571 
572  CloseHandle (sitter->child_handle);
573  sitter->child_handle = NULL;
574  }
575 
576  PING();
577  send (sitter->socket_to_main.sock, " ", 1, 0);
578 
579  _dbus_babysitter_unref (sitter);
580 
581  return ret ? 0 : 1;
582 }
583 
586  const char *log_name,
587  char * const *argv,
588  char * const *envp,
589  DBusSpawnFlags flags _DBUS_GNUC_UNUSED,
590  DBusSpawnChildSetupFunc child_setup _DBUS_GNUC_UNUSED,
591  void *user_data _DBUS_GNUC_UNUSED,
592  DBusError *error)
593 {
594  DBusBabysitter *sitter;
595  DWORD sitter_thread_id;
596  HANDLE handle;
597  int argc;
598  char **my_argv = NULL;
599 
600  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
601  _dbus_assert (argv[0] != NULL);
602 
603  if (sitter_p != NULL)
604  *sitter_p = NULL;
605 
606  PING();
607  sitter = _dbus_babysitter_new ();
608  if (sitter == NULL)
609  {
610  _DBUS_SET_OOM (error);
611  return FALSE;
612  }
613 
614  sitter->log_name = _dbus_strdup (log_name);
615  if (sitter->log_name == NULL && log_name != NULL)
616  {
617  _DBUS_SET_OOM (error);
618  goto out0;
619  }
620 
621  if (sitter->log_name == NULL)
622  sitter->log_name = _dbus_strdup (argv[0]);
623 
624  if (sitter->log_name == NULL)
625  {
626  _DBUS_SET_OOM (error);
627  goto out0;
628  }
629 
630  PING();
631  if (!_dbus_socketpair (&sitter->socket_to_babysitter,
632  &sitter->socket_to_main,
633  FALSE, error))
634  goto out0;
635 
638  TRUE, handle_watch, sitter, NULL);
639  PING();
640  if (sitter->sitter_watch == NULL)
641  {
642  _DBUS_SET_OOM (error);
643  goto out0;
644  }
645 
646  PING();
647  if (!_dbus_watch_list_add_watch (sitter->watches, sitter->sitter_watch))
648  {
649  /* we need to free it early so the destructor won't try to remove it
650  * without it having been added, which DBusLoop doesn't allow */
653  sitter->sitter_watch = NULL;
654 
655  _DBUS_SET_OOM (error);
656  goto out0;
657  }
658 
659  argc = protect_argv (argv, &my_argv);
660  if (argc == -1)
661  {
662  _DBUS_SET_OOM (error);
663  goto out0;
664  }
665 
666  _dbus_verbose ("babysitter: spawn child '%s'\n", my_argv[0]);
667 
668  PING();
669  handle = _dbus_spawn_program (sitter->log_name, my_argv, (char **) envp);
670 
671  if (my_argv != NULL)
672  {
673  dbus_free_string_array (my_argv);
674  }
675 
676  PING();
677  if (handle == INVALID_HANDLE_VALUE)
678  {
679  sitter->child_handle = NULL;
680  sitter->have_spawn_errno = TRUE;
681  sitter->spawn_errno = GetLastError();
683  "Failed to spawn child");
684  goto out0;
685  }
686 
687  sitter->child_handle = handle;
688 
689  PING();
690  sitter->thread_handle = (HANDLE) CreateThread (NULL, 0, babysitter,
691  _dbus_babysitter_ref (sitter), 0, &sitter_thread_id);
692 
693  if (sitter->thread_handle == NULL)
694  {
695  PING();
697  "Failed to create new thread");
698  goto out0;
699  }
700 
701  PING();
702  if (sitter_p != NULL)
703  *sitter_p = sitter;
704  else
705  _dbus_babysitter_unref (sitter);
706 
707  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
708 
709  PING();
710  return TRUE;
711 
712 out0:
713  _dbus_babysitter_unref (sitter);
714 
715  return FALSE;
716 }
717 
718 void
719 _dbus_babysitter_set_result_function (DBusBabysitter *sitter,
720  DBusBabysitterFinishedFunc finished,
721  void *user_data)
722 {
723  sitter->finished_cb = finished;
724  sitter->finished_data = user_data;
725 }
726 
727 #define LIVE_CHILDREN(sitter) ((sitter)->child_handle != NULL)
728 
729 void
730 _dbus_babysitter_block_for_child_exit (DBusBabysitter *sitter)
731 {
732  /* The thread terminates after the child does. We want to wait for the thread,
733  * not just the child, to avoid data races and ensure that it has freed all
734  * its memory. */
735  WaitForSingleObject (sitter->thread_handle, INFINITE);
736 }
_dbus_babysitter_ref
DBusBabysitter * _dbus_babysitter_ref(DBusBabysitter *sitter)
Increment the reference count on the babysitter object.
Definition: dbus-spawn-win.c:134
_dbus_atomic_dec
dbus_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer.
Definition: dbus-sysdeps-unix.c:3038
_dbus_watch_list_add_watch
dbus_bool_t _dbus_watch_list_add_watch(DBusWatchList *watch_list, DBusWatch *watch)
Adds a new watch to the watch list, invoking the application DBusAddWatchFunction if appropriate.
Definition: dbus-watch.c:381
_dbus_watch_list_new
DBusWatchList * _dbus_watch_list_new(void)
Creates a new watch list.
Definition: dbus-watch.c:232
_dbus_babysitter_get_child_exited
dbus_bool_t _dbus_babysitter_get_child_exited(DBusBabysitter *sitter)
Checks whether the child has exited, without blocking.
Definition: dbus-spawn-win.c:240
DBusBabysitter::have_child_status
unsigned int have_child_status
True if child status has been reaped.
Definition: dbus-spawn-unix.c:272
dbus_set_error_const
void dbus_set_error_const(DBusError *error, const char *name, const char *message)
Assigns an error name and message to a DBusError.
Definition: dbus-errors.c:243
_dbus_watch_list_remove_watch
void _dbus_watch_list_remove_watch(DBusWatchList *watch_list, DBusWatch *watch)
Removes a watch from the watch list, invoking the application's DBusRemoveWatchFunction if appropriat...
Definition: dbus-watch.c:414
_dbus_babysitter_set_child_exit_error
void _dbus_babysitter_set_child_exit_error(DBusBabysitter *sitter, DBusError *error)
Sets the DBusError with an explanation of why the spawned child process exited (on a signal,...
Definition: dbus-spawn-win.c:283
DBusFreeFunction
void(* DBusFreeFunction)(void *memory)
Definition: dbus-memory.h:63
DBusBabysitter::log_name
char * log_name
the name under which to log messages about this process being spawned
Definition: dbus-spawn-unix.c:253
DBusWatch
Implementation of DBusWatch.
Definition: dbus-watch.c:40
DBUS_ERROR_SPAWN_CHILD_EXITED
#define DBUS_ERROR_SPAWN_CHILD_EXITED
While starting a new process, the child exited with a status code.
Definition: dbus-protocol.h:424
_dbus_babysitter_set_watch_functions
dbus_bool_t _dbus_babysitter_set_watch_functions(DBusBabysitter *sitter, DBusAddWatchFunction add_function, DBusRemoveWatchFunction remove_function, DBusWatchToggledFunction toggled_function, void *data, DBusFreeFunction free_data_function)
Sets watch functions to notify us when the babysitter object needs to read/write file descriptors.
Definition: dbus-spawn-win.c:317
TRUE
#define TRUE
DBUS_WATCH_READABLE
@ DBUS_WATCH_READABLE
As in POLLIN.
Definition: dbus-connection.h:61
DBUS_ERROR_FAILED
#define DBUS_ERROR_FAILED
A generic error; "something went wrong" - see the error message for more.
Definition: dbus-protocol.h:359
DBUS_ERROR_SPAWN_EXEC_FAILED
#define DBUS_ERROR_SPAWN_EXEC_FAILED
While starting a new process, the exec() call failed.
Definition: dbus-protocol.h:420
DBusAddWatchFunction
dbus_bool_t(* DBusAddWatchFunction)(DBusWatch *watch, void *data)
Called when libdbus needs a new watch to be monitored by the main loop.
Definition: dbus-connection.h:92
_dbus_watch_unref
void _dbus_watch_unref(DBusWatch *watch)
Decrements the reference count of a DBusWatch object and finalizes the object if the count reaches ze...
Definition: dbus-watch.c:138
dbus_free
void dbus_free(void *memory)
Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
Definition: dbus-memory.c:704
dbus_malloc
void * dbus_malloc(size_t bytes)
Allocates the given number of bytes, as with standard malloc().
Definition: dbus-memory.c:464
DBusSocket
Socket interface.
Definition: dbus-sysdeps.h:181
DBusBabysitter
Babysitter implementation details.
Definition: dbus-spawn-unix.c:249
FALSE
#define FALSE
_dbus_assert_not_reached
#define _dbus_assert_not_reached(explanation)
Definition: dbus-internals.h:164
DBusBabysitter::watches
DBusWatchList * watches
Watches.
Definition: dbus-spawn-unix.c:262
DBusWatchList
DBusWatchList implementation details.
Definition: dbus-watch.c:214
DBUS_ERROR_SPAWN_FORK_FAILED
#define DBUS_ERROR_SPAWN_FORK_FAILED
While starting a new process, the fork() call failed.
Definition: dbus-protocol.h:422
DBusAtomic
An atomic integer safe to increment or decrement from multiple threads.
Definition: dbus-sysdeps.h:326
_dbus_close_socket
dbus_bool_t _dbus_close_socket(DBusSocket fd, DBusError *error)
Closes a socket.
Definition: dbus-sysdeps-unix.c:286
DBusWatchToggledFunction
void(* DBusWatchToggledFunction)(DBusWatch *watch, void *data)
Called when dbus_watch_get_enabled() may return a different value than it did before.
Definition: dbus-connection.h:98
_dbus_assert
#define _dbus_assert(condition)
Definition: dbus-internals.h:153
_dbus_babysitter_unref
void _dbus_babysitter_unref(DBusBabysitter *sitter)
Decrement the reference count on the babysitter object.
Definition: dbus-spawn-win.c:174
_dbus_socketpair
dbus_bool_t _dbus_socketpair(DBusSocket *fd1, DBusSocket *fd2, dbus_bool_t blocking, DBusError *error)
Creates pair of connect sockets (as in socketpair()).
Definition: dbus-sysdeps-unix.c:3704
_dbus_strdup
char * _dbus_strdup(const char *str)
Duplicates a string.
Definition: dbus-internals.c:589
_dbus_watch_list_free
void _dbus_watch_list_free(DBusWatchList *watch_list)
Frees a DBusWatchList.
Definition: dbus-watch.c:249
DBusError
Object representing an exception.
Definition: dbus-errors.h:48
_dbus_spawn_async_with_babysitter
dbus_bool_t _dbus_spawn_async_with_babysitter(DBusBabysitter **sitter_p, const char *log_name, char *const *argv, char *const *env, DBusSpawnFlags flags, DBusSpawnChildSetupFunc child_setup, void *user_data, DBusError *error)
Spawns a new process.
Definition: dbus-spawn-unix.c:1271
_dbus_watch_invalidate
void _dbus_watch_invalidate(DBusWatch *watch)
Clears the file descriptor from a now-invalid watch object so that no one tries to use it.
Definition: dbus-watch.c:169
_dbus_watch_list_set_functions
dbus_bool_t _dbus_watch_list_set_functions(DBusWatchList *watch_list, DBusAddWatchFunction add_function, DBusRemoveWatchFunction remove_function, DBusWatchToggledFunction toggled_function, void *data, DBusFreeFunction free_data_function)
Sets the watch functions.
Definition: dbus-watch.c:295
DBusBabysitter::socket_to_babysitter
DBusSocket socket_to_babysitter
Connection to the babysitter process.
Definition: dbus-spawn-unix.c:256
dbus_set_error
void dbus_set_error(DBusError *error, const char *name, const char *format,...)
Assigns an error name and message to a DBusError.
Definition: dbus-errors.c:354
dbus_free_string_array
void dbus_free_string_array(char **str_array)
Frees a NULL-terminated array of strings.
Definition: dbus-memory.c:752
DBusBabysitter::sitter_watch
DBusWatch * sitter_watch
Sitter pipe watch.
Definition: dbus-spawn-unix.c:265
DBusRemoveWatchFunction
void(* DBusRemoveWatchFunction)(DBusWatch *watch, void *data)
Called when libdbus no longer needs a watch to be monitored by the main loop.
Definition: dbus-connection.h:104
_dbus_atomic_inc
dbus_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer.
Definition: dbus-sysdeps-unix.c:3015
DBusBabysitter::refcount
int refcount
Reference count.
Definition: dbus-spawn-unix.c:251
_dbus_babysitter_kill_child
void _dbus_babysitter_kill_child(DBusBabysitter *sitter)
Blocks until the babysitter process gives us the PID of the spawned grandchild, then kills the spawne...
Definition: dbus-spawn-win.c:224
dbus_new0
#define dbus_new0(type, count)
Definition: dbus-memory.h:58
_dbus_watch_new
DBusWatch * _dbus_watch_new(DBusPollable fd, unsigned int flags, dbus_bool_t enabled, DBusWatchHandler handler, void *data, DBusFreeFunction free_data_function)
Creates a new DBusWatch.
Definition: dbus-watch.c:88
_dbus_babysitter_get_child_exit_status
dbus_bool_t _dbus_babysitter_get_child_exit_status(DBusBabysitter *sitter, int *status)
Gets the exit status of the child.
Definition: dbus-spawn-win.c:259
dbus_bool_t
dbus_uint32_t dbus_bool_t
Definition: dbus-types.h:35
NULL
#define NULL