1 /* -*- mode: C; c-file-style: "gnu" -*- */
2 /* dbus-spawn.c Wrapper around fork/exec
4 * Copyright (C) 2002, 2003 Red Hat, Inc.
5 * Copyright (C) 2003 CodeFactory AB
7 * Licensed under the Academic Free License version 1.2
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #include "dbus-spawn.h"
25 #include "dbus-sysdeps.h"
26 #include "dbus-internals.h"
27 #include "dbus-test.h"
36 * @addtogroup DBusInternalsUtils
41 * I'm pretty sure this whole spawn file could be made simpler,
42 * if you thought about it a bit.
46 * Enumeration for status of a read()
50 READ_STATUS_OK, /**< Read succeeded */
51 READ_STATUS_ERROR, /**< Some kind of error */
52 READ_STATUS_EOF /**< EOF returned */
65 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
67 retval = READ_STATUS_OK;
76 to_read = sizeof (int) * n_ints_in_buf - bytes;
85 if (chunk < 0 && errno == EINTR)
90 dbus_set_error (error,
91 DBUS_ERROR_SPAWN_FAILED,
92 "Failed to read from child pipe (%s)",
93 _dbus_strerror (errno));
95 retval = READ_STATUS_ERROR;
100 retval = READ_STATUS_EOF;
107 *n_ints_read = (int)(bytes / sizeof(int));
120 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
122 retval = READ_STATUS_OK;
130 to_read = sizeof (pid_t) - bytes;
136 ((char*)buf) + bytes,
138 if (chunk < 0 && errno == EINTR)
143 dbus_set_error (error,
144 DBUS_ERROR_SPAWN_FAILED,
145 "Failed to read from child pipe (%s)",
146 _dbus_strerror (errno));
148 retval = READ_STATUS_ERROR;
153 retval = READ_STATUS_EOF;
163 /* The implementation uses an intermediate child between the main process
164 * and the grandchild. The grandchild is our spawned process. The intermediate
165 * child is a babysitter process; it keeps track of when the grandchild
166 * exits/crashes, and reaps the grandchild.
169 /* Messages from children to parents */
172 CHILD_EXITED, /* This message is followed by the exit status int */
173 CHILD_FORK_FAILED, /* Followed by errno */
174 CHILD_EXEC_FAILED, /* Followed by errno */
175 CHILD_PID /* Followed by pid_t */
178 struct DBusBabysitter
182 char *executable; /**< executable name to use in error messages */
184 int socket_to_babysitter;
185 int error_pipe_from_child;
188 pid_t grandchild_pid;
190 DBusWatchList *watches;
192 DBusWatch *error_watch;
193 DBusWatch *sitter_watch;
197 unsigned int have_child_status : 1;
198 unsigned int have_fork_errnum : 1;
199 unsigned int have_exec_errnum : 1;
202 static DBusBabysitter*
203 _dbus_babysitter_new (void)
205 DBusBabysitter *sitter;
207 sitter = dbus_new0 (DBusBabysitter, 1);
211 sitter->refcount = 1;
213 sitter->socket_to_babysitter = -1;
214 sitter->error_pipe_from_child = -1;
216 sitter->sitter_pid = -1;
217 sitter->grandchild_pid = -1;
219 sitter->watches = _dbus_watch_list_new ();
220 if (sitter->watches == NULL)
226 _dbus_babysitter_unref (sitter);
231 * Increment the reference count on the babysitter object.
233 * @param sitter the babysitter
236 _dbus_babysitter_ref (DBusBabysitter *sitter)
238 _dbus_assert (sitter != NULL);
239 _dbus_assert (sitter->refcount > 0);
241 sitter->refcount += 1;
245 * Decrement the reference count on the babysitter object.
247 * @param sitter the babysitter
250 _dbus_babysitter_unref (DBusBabysitter *sitter)
252 _dbus_assert (sitter != NULL);
253 _dbus_assert (sitter->refcount > 0);
255 sitter->refcount -= 1;
256 if (sitter->refcount == 0)
258 if (sitter->socket_to_babysitter >= 0)
260 close (sitter->socket_to_babysitter);
261 sitter->socket_to_babysitter = -1;
264 if (sitter->error_pipe_from_child >= 0)
266 close (sitter->error_pipe_from_child);
267 sitter->error_pipe_from_child = -1;
270 if (sitter->sitter_pid != -1)
275 /* Reap the babysitter */
277 ret = waitpid (sitter->sitter_pid, &status, 0);
282 else if (errno == ECHILD)
283 _dbus_warn ("Babysitter process not available to be reaped; should not happen\n");
285 _dbus_warn ("Unexpected error %d in waitpid() for babysitter: %s\n",
286 errno, _dbus_strerror (errno));
290 if (WIFEXITED (sitter->status))
291 _dbus_verbose ("Babysitter exited with status %d\n",
292 WEXITSTATUS (sitter->status));
293 else if (WIFSIGNALED (sitter->status))
294 _dbus_verbose ("Babysitter received signal %d\n",
295 WTERMSIG (sitter->status));
297 _dbus_verbose ("Babysitter exited abnormally\n");
300 sitter->sitter_pid = -1;
303 if (sitter->error_watch)
305 _dbus_watch_invalidate (sitter->error_watch);
306 _dbus_watch_unref (sitter->error_watch);
307 sitter->error_watch = NULL;
310 if (sitter->sitter_watch)
312 _dbus_watch_invalidate (sitter->sitter_watch);
313 _dbus_watch_unref (sitter->sitter_watch);
314 sitter->sitter_watch = NULL;
318 _dbus_watch_list_free (sitter->watches);
320 dbus_free (sitter->executable);
327 read_data (DBusBabysitter *sitter,
335 dbus_error_init (&error);
337 r = read_ints (fd, &what, 1, &got, &error);
341 case READ_STATUS_ERROR:
342 _dbus_warn ("Failed to read data from fd %d: %s\n", fd, error.message);
343 dbus_error_free (&error);
346 case READ_STATUS_EOF:
358 case CHILD_FORK_FAILED:
359 case CHILD_EXEC_FAILED:
363 r = read_ints (fd, &arg, 1, &got, &error);
367 case READ_STATUS_ERROR:
368 _dbus_warn ("Failed to read arg from fd %d: %s\n", fd, error.message);
369 dbus_error_free (&error);
371 case READ_STATUS_EOF:
379 if (what == CHILD_EXITED)
381 sitter->have_child_status = TRUE;
382 sitter->status = arg;
383 _dbus_verbose ("recorded child status exited = %d signaled = %d exitstatus = %d termsig = %d\n",
384 WIFEXITED (sitter->status), WIFSIGNALED (sitter->status),
385 WEXITSTATUS (sitter->status), WTERMSIG (sitter->status));
387 else if (what == CHILD_FORK_FAILED)
389 sitter->have_fork_errnum = TRUE;
390 sitter->errnum = arg;
391 _dbus_verbose ("recorded fork errnum %d\n", sitter->errnum);
393 else if (what == CHILD_EXEC_FAILED)
395 sitter->have_exec_errnum = TRUE;
396 sitter->errnum = arg;
397 _dbus_verbose ("recorded exec errnum %d\n", sitter->errnum);
406 r = read_pid (fd, &pid, &error);
410 case READ_STATUS_ERROR:
411 _dbus_warn ("Failed to read PID from fd %d: %s\n", fd, error.message);
412 dbus_error_free (&error);
414 case READ_STATUS_EOF:
420 sitter->grandchild_pid = pid;
422 _dbus_verbose ("recorded grandchild pid %d\n", sitter->grandchild_pid);
426 _dbus_warn ("Unknown message received from babysitter process\n");
435 close_socket_to_babysitter (DBusBabysitter *sitter)
437 _dbus_verbose ("Closing babysitter\n");
438 close (sitter->socket_to_babysitter);
439 sitter->socket_to_babysitter = -1;
443 close_error_pipe_from_child (DBusBabysitter *sitter)
445 _dbus_verbose ("Closing child error\n");
446 close (sitter->error_pipe_from_child);
447 sitter->error_pipe_from_child = -1;
451 handle_babysitter_socket (DBusBabysitter *sitter,
454 /* Even if we have POLLHUP, we want to keep reading
455 * data until POLLIN goes away; so this function only
456 * looks at HUP/ERR if no IN is set.
458 if (revents & _DBUS_POLLIN)
460 _dbus_verbose ("Reading data from babysitter\n");
461 if (read_data (sitter, sitter->socket_to_babysitter) != READ_STATUS_OK)
462 close_socket_to_babysitter (sitter);
464 else if (revents & (_DBUS_POLLERR | _DBUS_POLLHUP))
466 close_socket_to_babysitter (sitter);
471 handle_error_pipe (DBusBabysitter *sitter,
474 if (revents & _DBUS_POLLIN)
476 _dbus_verbose ("Reading data from child error\n");
477 if (read_data (sitter, sitter->error_pipe_from_child) != READ_STATUS_OK)
478 close_error_pipe_from_child (sitter);
480 else if (revents & (_DBUS_POLLERR | _DBUS_POLLHUP))
482 close_error_pipe_from_child (sitter);
486 /* returns whether there were any poll events handled */
488 babysitter_iteration (DBusBabysitter *sitter,
493 dbus_bool_t descriptors_ready;
495 descriptors_ready = FALSE;
499 if (sitter->error_pipe_from_child >= 0)
501 fds[i].fd = sitter->error_pipe_from_child;
502 fds[i].events = _DBUS_POLLIN;
507 if (sitter->socket_to_babysitter >= 0)
509 fds[i].fd = sitter->socket_to_babysitter;
510 fds[i].events = _DBUS_POLLIN;
519 ret = _dbus_poll (fds, i, 0);
520 if (ret == 0 && block)
521 ret = _dbus_poll (fds, i, -1);
525 descriptors_ready = TRUE;
530 if (fds[i].fd == sitter->error_pipe_from_child)
531 handle_error_pipe (sitter, fds[i].revents);
532 else if (fds[i].fd == sitter->socket_to_babysitter)
533 handle_babysitter_socket (sitter, fds[i].revents);
538 return descriptors_ready;
542 * Macro returns #TRUE if the babysitter still has live sockets open to the
543 * babysitter child or the grandchild.
545 #define LIVE_CHILDREN(sitter) ((sitter)->socket_to_babysitter >= 0 || (sitter)->error_pipe_from_child >= 0)
549 * Blocks until the babysitter process gives us the PID of the spawned grandchild,
550 * then kills the spawned grandchild.
552 * @param sitter the babysitter object
555 _dbus_babysitter_kill_child (DBusBabysitter *sitter)
557 /* be sure we have the PID of the child */
558 while (LIVE_CHILDREN (sitter) &&
559 sitter->grandchild_pid == -1)
560 babysitter_iteration (sitter, TRUE);
562 if (sitter->grandchild_pid == -1)
563 return; /* child is already dead, or we're so hosed we'll never recover */
565 kill (sitter->grandchild_pid, SIGKILL);
569 * Checks whether the child has exited, without blocking.
571 * @param sitter the babysitter
574 _dbus_babysitter_get_child_exited (DBusBabysitter *sitter)
577 /* Be sure we're up-to-date */
578 while (LIVE_CHILDREN (sitter) &&
579 babysitter_iteration (sitter, FALSE))
582 /* We will have exited the babysitter when the child has exited */
583 return sitter->socket_to_babysitter < 0;
587 _dbus_babysitter_block_for_child_exit (DBusBabysitter *sitter)
589 while (LIVE_CHILDREN (sitter))
590 babysitter_iteration (sitter, TRUE);
594 * Sets the #DBusError with an explanation of why the spawned
595 * child process exited (on a signal, or whatever). If
596 * the child process has not exited, does nothing (error
597 * will remain unset).
599 * @param sitter the babysitter
600 * @param error an error to fill in
603 _dbus_babysitter_set_child_exit_error (DBusBabysitter *sitter,
606 if (!_dbus_babysitter_get_child_exited (sitter))
609 /* Note that if exec fails, we will also get a child status
610 * from the babysitter saying the child exited,
611 * so we need to give priority to the exec error
613 if (sitter->have_exec_errnum)
615 dbus_set_error (error, DBUS_ERROR_SPAWN_EXEC_FAILED,
616 "Failed to execute program %s: %s",
617 sitter->executable, _dbus_strerror (sitter->errnum));
619 else if (sitter->have_fork_errnum)
621 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
622 "Failed to fork a new process %s: %s",
623 sitter->executable, _dbus_strerror (sitter->errnum));
625 else if (sitter->have_child_status)
627 if (WIFEXITED (sitter->status))
628 dbus_set_error (error, DBUS_ERROR_SPAWN_CHILD_EXITED,
629 "Process %s exited with status %d",
630 sitter->executable, WEXITSTATUS (sitter->status));
631 else if (WIFSIGNALED (sitter->status))
632 dbus_set_error (error, DBUS_ERROR_SPAWN_CHILD_SIGNALED,
633 "Process %s received signal %d",
634 sitter->executable, WTERMSIG (sitter->status));
636 dbus_set_error (error, DBUS_ERROR_FAILED,
637 "Process %s exited abnormally",
642 dbus_set_error (error, DBUS_ERROR_FAILED,
643 "Process %s exited, reason unknown",
649 * Sets watch functions to notify us when the
650 * babysitter object needs to read/write file descriptors.
652 * @param sitter the babysitter
653 * @param add_function function to begin monitoring a new descriptor.
654 * @param remove_function function to stop monitoring a descriptor.
655 * @param toggled_function function to notify when the watch is enabled/disabled
656 * @param data data to pass to add_function and remove_function.
657 * @param free_data_function function to be called to free the data.
658 * @returns #FALSE on failure (no memory)
661 _dbus_babysitter_set_watch_functions (DBusBabysitter *sitter,
662 DBusAddWatchFunction add_function,
663 DBusRemoveWatchFunction remove_function,
664 DBusWatchToggledFunction toggled_function,
666 DBusFreeFunction free_data_function)
668 return _dbus_watch_list_set_functions (sitter->watches,
677 * Handles watch when descriptors are ready.
679 * @param sitter the babysitter.
680 * @param watch the watch object
681 * @param condition the descriptor conditions
682 * @returns #FALSE if there wasn't enough memory.
686 _dbus_babysitter_handle_watch (DBusBabysitter *sitter,
688 unsigned int condition)
694 if (condition & DBUS_WATCH_READABLE)
695 revents |= _DBUS_POLLIN;
696 if (condition & DBUS_WATCH_ERROR)
697 revents |= _DBUS_POLLERR;
698 if (condition & DBUS_WATCH_HANGUP)
699 revents |= _DBUS_POLLHUP;
701 fd = dbus_watch_get_fd (watch);
703 if (fd == sitter->error_pipe_from_child)
704 handle_error_pipe (sitter, revents);
705 else if (fd == sitter->socket_to_babysitter)
706 handle_babysitter_socket (sitter, revents);
708 while (LIVE_CHILDREN (sitter) &&
709 babysitter_iteration (sitter, FALSE))
715 /** Helps remember which end of the pipe is which */
717 /** Helps remember which end of the pipe is which */
721 /* Avoids a danger in threaded situations (calling close()
722 * on a file descriptor twice, and another thread has
723 * re-opened it since the first close)
726 close_and_invalidate (int *fd)
745 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
749 dbus_set_error (error,
750 DBUS_ERROR_SPAWN_FAILED,
751 "Failed to create pipe for communicating with child process (%s)",
752 _dbus_strerror (errno));
760 do_write (int fd, const void *buf, size_t count)
762 size_t bytes_written;
769 ret = write (fd, ((const char*)buf) + bytes_written, count - bytes_written);
777 _dbus_warn ("Failed to write data to pipe!\n");
778 _exit (1); /* give up, we suck */
782 bytes_written += ret;
784 if (bytes_written < count)
789 write_err_and_exit (int fd, int msg)
793 do_write (fd, &msg, sizeof (msg));
794 do_write (fd, &en, sizeof (en));
800 write_pid (int fd, pid_t pid)
804 do_write (fd, &msg, sizeof (msg));
805 do_write (fd, &pid, sizeof (pid));
809 write_status_and_exit (int fd, int status)
811 int msg = CHILD_EXITED;
813 do_write (fd, &msg, sizeof (msg));
814 do_write (fd, &status, sizeof (status));
820 do_exec (int child_err_report_fd,
822 DBusSpawnChildSetupFunc child_setup,
825 #ifdef DBUS_BUILD_TESTS
830 (* child_setup) (user_data);
832 #ifdef DBUS_BUILD_TESTS
833 max_open = sysconf (_SC_OPEN_MAX);
835 for (i = 3; i < max_open; i++)
839 if (i == child_err_report_fd)
842 retval = fcntl (i, F_GETFD);
844 if (retval != -1 && !(retval & FD_CLOEXEC))
845 _dbus_warn ("Fd %d did not have the close-on-exec flag set!\n", i);
849 execv (argv[0], argv);
852 write_err_and_exit (child_err_report_fd,
857 check_babysit_events (pid_t grandchild_pid,
864 ret = waitpid (grandchild_pid, &status, WNOHANG);
868 _dbus_verbose ("no child exited\n");
870 ; /* no child exited */
874 /* This isn't supposed to happen. */
875 _dbus_warn ("unexpected waitpid() failure in check_babysit_events(): %s\n",
876 _dbus_strerror (errno));
879 else if (ret == grandchild_pid)
882 write_status_and_exit (parent_pipe, status);
886 _dbus_warn ("waitpid() reaped pid %d that we've never heard of\n",
891 if (revents & _DBUS_POLLIN)
893 /* Data to read from parent */
897 if (revents & (_DBUS_POLLERR | _DBUS_POLLHUP))
899 /* Parent is gone, so we just exit */
904 static int babysit_sigchld_pipe = -1;
907 babysit_signal_handler (int signo)
911 write (babysit_sigchld_pipe, &b, 1);
917 babysit (pid_t grandchild_pid,
922 /* I thought SIGCHLD would just wake up the poll, but
923 * that didn't seem to work, so added this pipe.
924 * Probably the pipe is more likely to work on busted
925 * operating systems anyhow.
927 if (pipe (sigchld_pipe) < 0)
929 _dbus_warn ("Not enough file descriptors to create pipe in babysitter process\n");
933 babysit_sigchld_pipe = sigchld_pipe[WRITE_END];
935 _dbus_set_signal_handler (SIGCHLD, babysit_signal_handler);
937 write_pid (parent_pipe, grandchild_pid);
939 check_babysit_events (grandchild_pid, parent_pipe, 0);
945 pfds[0].fd = parent_pipe;
946 pfds[0].events = _DBUS_POLLIN;
949 pfds[1].fd = sigchld_pipe[READ_END];
950 pfds[1].events = _DBUS_POLLIN;
953 _dbus_poll (pfds, _DBUS_N_ELEMENTS (pfds), -1);
955 if (pfds[0].revents != 0)
957 check_babysit_events (grandchild_pid, parent_pipe, pfds[0].revents);
959 else if (pfds[1].revents & _DBUS_POLLIN)
962 read (sigchld_pipe[READ_END], &b, 1);
963 /* do waitpid check */
964 check_babysit_events (grandchild_pid, parent_pipe, 0);
972 * Spawns a new process. The executable name and argv[0]
973 * are the same, both are provided in argv[0]. The child_setup
974 * function is passed the given user_data and is run in the child
975 * just before calling exec().
977 * Also creates a "babysitter" which tracks the status of the
978 * child process, advising the parent if the child exits.
979 * If the spawn fails, no babysitter is created.
980 * If sitter_p is #NULL, no babysitter is kept.
982 * @param sitter_p return location for babysitter or #NULL
983 * @param argv the executable and arguments
984 * @param child_setup function to call in child pre-exec()
985 * @param user_data user data for setup function
986 * @param error error object to be filled in if function fails
987 * @returns #TRUE on success, #FALSE if error is filled in
990 _dbus_spawn_async_with_babysitter (DBusBabysitter **sitter_p,
992 DBusSpawnChildSetupFunc child_setup,
996 DBusBabysitter *sitter;
997 int child_err_report_pipe[2] = { -1, -1 };
998 int babysitter_pipe[2] = { -1, -1 };
1001 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1006 sitter = _dbus_babysitter_new ();
1009 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1013 sitter->executable = _dbus_strdup (argv[0]);
1014 if (sitter->executable == NULL)
1016 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1017 goto cleanup_and_fail;
1020 if (!make_pipe (child_err_report_pipe, error))
1021 goto cleanup_and_fail;
1023 _dbus_fd_set_close_on_exec (child_err_report_pipe[READ_END]);
1025 if (!_dbus_full_duplex_pipe (&babysitter_pipe[0], &babysitter_pipe[1], TRUE, error))
1026 goto cleanup_and_fail;
1028 _dbus_fd_set_close_on_exec (babysitter_pipe[0]);
1029 _dbus_fd_set_close_on_exec (babysitter_pipe[1]);
1035 dbus_set_error (error,
1036 DBUS_ERROR_SPAWN_FORK_FAILED,
1037 "Failed to fork (%s)",
1038 _dbus_strerror (errno));
1039 goto cleanup_and_fail;
1043 /* Immediate child, this is the babysitter process. */
1046 /* Be sure we crash if the parent exits
1047 * and we write to the err_report_pipe
1049 signal (SIGPIPE, SIG_DFL);
1051 /* Close the parent's end of the pipes. */
1052 close_and_invalidate (&child_err_report_pipe[READ_END]);
1053 close_and_invalidate (&babysitter_pipe[0]);
1055 /* Create the child that will exec () */
1056 grandchild_pid = fork ();
1058 if (grandchild_pid < 0)
1060 write_err_and_exit (babysitter_pipe[1],
1062 _dbus_assert_not_reached ("Got to code after write_err_and_exit()");
1064 else if (grandchild_pid == 0)
1066 do_exec (child_err_report_pipe[WRITE_END],
1068 child_setup, user_data);
1069 _dbus_assert_not_reached ("Got to code after exec() - should have exited on error");
1073 babysit (grandchild_pid, babysitter_pipe[1]);
1074 _dbus_assert_not_reached ("Got to code after babysit()");
1080 sitter->error_watch = _dbus_watch_new (child_err_report_pipe[READ_END],
1081 DBUS_WATCH_READABLE,
1083 if (sitter->error_watch == NULL)
1085 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1086 goto cleanup_and_fail;
1089 if (!_dbus_watch_list_add_watch (sitter->watches, sitter->error_watch))
1091 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1092 goto cleanup_and_fail;
1095 sitter->sitter_watch = _dbus_watch_new (babysitter_pipe[0],
1096 DBUS_WATCH_READABLE,
1098 if (sitter->sitter_watch == NULL)
1100 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1101 goto cleanup_and_fail;
1104 if (!_dbus_watch_list_add_watch (sitter->watches, sitter->sitter_watch))
1106 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1107 goto cleanup_and_fail;
1110 /* Close the uncared-about ends of the pipes */
1111 close_and_invalidate (&child_err_report_pipe[WRITE_END]);
1112 close_and_invalidate (&babysitter_pipe[1]);
1114 sitter->socket_to_babysitter = babysitter_pipe[0];
1115 babysitter_pipe[0] = -1;
1117 sitter->error_pipe_from_child = child_err_report_pipe[READ_END];
1118 child_err_report_pipe[READ_END] = -1;
1120 sitter->sitter_pid = pid;
1122 if (sitter_p != NULL)
1125 _dbus_babysitter_unref (sitter);
1127 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1134 _DBUS_ASSERT_ERROR_IS_SET (error);
1136 close_and_invalidate (&child_err_report_pipe[READ_END]);
1137 close_and_invalidate (&child_err_report_pipe[WRITE_END]);
1138 close_and_invalidate (&babysitter_pipe[0]);
1139 close_and_invalidate (&babysitter_pipe[1]);
1142 _dbus_babysitter_unref (sitter);
1149 #ifdef DBUS_BUILD_TESTS
1152 check_spawn_nonexistent (void *data)
1154 char *argv[4] = { NULL, NULL, NULL, NULL };
1155 DBusBabysitter *sitter;
1160 dbus_error_init (&error);
1162 /*** Test launching nonexistent binary */
1164 argv[0] = "/this/does/not/exist/32542sdgafgafdg";
1165 if (_dbus_spawn_async_with_babysitter (&sitter, argv,
1169 _dbus_babysitter_block_for_child_exit (sitter);
1170 _dbus_babysitter_set_child_exit_error (sitter, &error);
1174 _dbus_babysitter_unref (sitter);
1176 if (!dbus_error_is_set (&error))
1178 _dbus_warn ("Did not get an error launching nonexistent executable\n");
1182 if (!(dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY) ||
1183 dbus_error_has_name (&error, DBUS_ERROR_SPAWN_EXEC_FAILED)))
1185 _dbus_warn ("Not expecting error when launching nonexistent executable: %s: %s\n",
1186 error.name, error.message);
1187 dbus_error_free (&error);
1191 dbus_error_free (&error);
1197 check_spawn_segfault (void *data)
1199 char *argv[4] = { NULL, NULL, NULL, NULL };
1200 DBusBabysitter *sitter;
1205 dbus_error_init (&error);
1207 /*** Test launching segfault binary */
1209 argv[0] = TEST_SEGFAULT_BINARY;
1210 if (_dbus_spawn_async_with_babysitter (&sitter, argv,
1214 _dbus_babysitter_block_for_child_exit (sitter);
1215 _dbus_babysitter_set_child_exit_error (sitter, &error);
1219 _dbus_babysitter_unref (sitter);
1221 if (!dbus_error_is_set (&error))
1223 _dbus_warn ("Did not get an error launching segfaulting binary\n");
1227 if (!(dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY) ||
1228 dbus_error_has_name (&error, DBUS_ERROR_SPAWN_CHILD_SIGNALED)))
1230 _dbus_warn ("Not expecting error when launching segfaulting executable: %s: %s\n",
1231 error.name, error.message);
1232 dbus_error_free (&error);
1236 dbus_error_free (&error);
1242 check_spawn_exit (void *data)
1244 char *argv[4] = { NULL, NULL, NULL, NULL };
1245 DBusBabysitter *sitter;
1250 dbus_error_init (&error);
1252 /*** Test launching exit failure binary */
1254 argv[0] = TEST_EXIT_BINARY;
1255 if (_dbus_spawn_async_with_babysitter (&sitter, argv,
1259 _dbus_babysitter_block_for_child_exit (sitter);
1260 _dbus_babysitter_set_child_exit_error (sitter, &error);
1264 _dbus_babysitter_unref (sitter);
1266 if (!dbus_error_is_set (&error))
1268 _dbus_warn ("Did not get an error launching binary that exited with failure code\n");
1272 if (!(dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY) ||
1273 dbus_error_has_name (&error, DBUS_ERROR_SPAWN_CHILD_EXITED)))
1275 _dbus_warn ("Not expecting error when launching exiting executable: %s: %s\n",
1276 error.name, error.message);
1277 dbus_error_free (&error);
1281 dbus_error_free (&error);
1287 check_spawn_and_kill (void *data)
1289 char *argv[4] = { NULL, NULL, NULL, NULL };
1290 DBusBabysitter *sitter;
1295 dbus_error_init (&error);
1297 /*** Test launching sleeping binary then killing it */
1299 argv[0] = TEST_SLEEP_FOREVER_BINARY;
1300 if (_dbus_spawn_async_with_babysitter (&sitter, argv,
1304 _dbus_babysitter_kill_child (sitter);
1306 _dbus_babysitter_block_for_child_exit (sitter);
1308 _dbus_babysitter_set_child_exit_error (sitter, &error);
1312 _dbus_babysitter_unref (sitter);
1314 if (!dbus_error_is_set (&error))
1316 _dbus_warn ("Did not get an error after killing spawned binary\n");
1320 if (!(dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY) ||
1321 dbus_error_has_name (&error, DBUS_ERROR_SPAWN_CHILD_SIGNALED)))
1323 _dbus_warn ("Not expecting error when killing executable: %s: %s\n",
1324 error.name, error.message);
1325 dbus_error_free (&error);
1329 dbus_error_free (&error);
1335 _dbus_spawn_test (const char *test_data_dir)
1337 if (!_dbus_test_oom_handling ("spawn_nonexistent",
1338 check_spawn_nonexistent,
1342 if (!_dbus_test_oom_handling ("spawn_segfault",
1343 check_spawn_segfault,
1347 if (!_dbus_test_oom_handling ("spawn_exit",
1352 if (!_dbus_test_oom_handling ("spawn_and_kill",
1353 check_spawn_and_kill,