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.
62 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
64 retval = READ_STATUS_OK;
73 to_read = sizeof (int) * n_ints_in_buf - bytes;
82 if (chunk < 0 && errno == EINTR)
87 dbus_set_error (error,
88 DBUS_ERROR_SPAWN_FAILED,
89 "Failed to read from child pipe (%s)",
90 _dbus_strerror (errno));
92 retval = READ_STATUS_ERROR;
97 retval = READ_STATUS_EOF;
104 *n_ints_read = (int)(bytes / sizeof(int));
117 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
119 retval = READ_STATUS_OK;
127 to_read = sizeof (pid_t) - bytes;
133 ((char*)buf) + bytes,
135 if (chunk < 0 && errno == EINTR)
140 dbus_set_error (error,
141 DBUS_ERROR_SPAWN_FAILED,
142 "Failed to read from child pipe (%s)",
143 _dbus_strerror (errno));
145 retval = READ_STATUS_ERROR;
150 retval = READ_STATUS_EOF;
160 /* The implementation uses an intermediate child between the main process
161 * and the grandchild. The grandchild is our spawned process. The intermediate
162 * child is a babysitter process; it keeps track of when the grandchild
163 * exits/crashes, and reaps the grandchild.
166 /* Messages from children to parents */
169 CHILD_EXITED, /* This message is followed by the exit status int */
170 CHILD_FORK_FAILED, /* Followed by errno */
171 CHILD_EXEC_FAILED, /* Followed by errno */
172 CHILD_PID /* Followed by pid_t */
175 struct DBusBabysitter
179 char *executable; /**< executable name to use in error messages */
181 int socket_to_babysitter;
182 int error_pipe_from_child;
185 pid_t grandchild_pid;
187 DBusWatchList *watches;
189 DBusWatch *error_watch;
190 DBusWatch *sitter_watch;
194 unsigned int have_child_status : 1;
195 unsigned int have_fork_errnum : 1;
196 unsigned int have_exec_errnum : 1;
199 static DBusBabysitter*
200 _dbus_babysitter_new (void)
202 DBusBabysitter *sitter;
204 sitter = dbus_new0 (DBusBabysitter, 1);
208 sitter->refcount = 1;
210 sitter->socket_to_babysitter = -1;
211 sitter->error_pipe_from_child = -1;
213 sitter->sitter_pid = -1;
214 sitter->grandchild_pid = -1;
216 sitter->watches = _dbus_watch_list_new ();
217 if (sitter->watches == NULL)
223 _dbus_babysitter_unref (sitter);
228 * Increment the reference count on the babysitter object.
230 * @param sitter the babysitter
233 _dbus_babysitter_ref (DBusBabysitter *sitter)
235 _dbus_assert (sitter != NULL);
236 _dbus_assert (sitter->refcount > 0);
238 sitter->refcount += 1;
242 * Decrement the reference count on the babysitter object.
244 * @param sitter the babysitter
247 _dbus_babysitter_unref (DBusBabysitter *sitter)
249 _dbus_assert (sitter != NULL);
250 _dbus_assert (sitter->refcount > 0);
252 sitter->refcount -= 1;
253 if (sitter->refcount == 0)
255 if (sitter->socket_to_babysitter >= 0)
257 close (sitter->socket_to_babysitter);
258 sitter->socket_to_babysitter = -1;
261 if (sitter->error_pipe_from_child >= 0)
263 close (sitter->error_pipe_from_child);
264 sitter->error_pipe_from_child = -1;
267 if (sitter->sitter_pid != -1)
272 /* Reap the babysitter */
274 ret = waitpid (sitter->sitter_pid, &status, 0);
279 else if (errno == ECHILD)
280 _dbus_warn ("Babysitter process not available to be reaped; should not happen\n");
282 _dbus_warn ("Unexpected error %d in waitpid() for babysitter: %s\n",
283 errno, _dbus_strerror (errno));
287 if (WIFEXITED (sitter->status))
288 _dbus_verbose ("Babysitter exited with status %d\n",
289 WEXITSTATUS (sitter->status));
290 else if (WIFSIGNALED (sitter->status))
291 _dbus_verbose ("Babysitter received signal %d\n",
292 WTERMSIG (sitter->status));
294 _dbus_verbose ("Babysitter exited abnormally\n");
298 if (sitter->error_watch)
300 _dbus_watch_invalidate (sitter->error_watch);
301 _dbus_watch_unref (sitter->error_watch);
302 sitter->error_watch = NULL;
305 if (sitter->sitter_watch)
307 _dbus_watch_invalidate (sitter->sitter_watch);
308 _dbus_watch_unref (sitter->sitter_watch);
309 sitter->sitter_watch = NULL;
313 _dbus_watch_list_free (sitter->watches);
315 dbus_free (sitter->executable);
322 read_data (DBusBabysitter *sitter,
330 dbus_error_init (&error);
332 r = read_ints (fd, &what, 1, &got, &error);
336 case READ_STATUS_ERROR:
337 _dbus_warn ("Failed to read data from fd %d: %s\n", fd, error.message);
338 dbus_error_free (&error);
341 case READ_STATUS_EOF:
353 case CHILD_FORK_FAILED:
354 case CHILD_EXEC_FAILED:
358 r = read_ints (fd, &arg, 1, &got, &error);
362 case READ_STATUS_ERROR:
363 _dbus_warn ("Failed to read arg from fd %d: %s\n", fd, error.message);
364 dbus_error_free (&error);
366 case READ_STATUS_EOF:
374 if (what == CHILD_EXITED)
376 sitter->have_child_status = TRUE;
377 sitter->status = arg;
378 _dbus_verbose ("recorded child status exited = %d signaled = %d exitstatus = %d termsig = %d\n",
379 WIFEXITED (sitter->status), WIFSIGNALED (sitter->status),
380 WEXITSTATUS (sitter->status), WTERMSIG (sitter->status));
382 else if (what == CHILD_FORK_FAILED)
384 sitter->have_fork_errnum = TRUE;
385 sitter->errnum = arg;
386 _dbus_verbose ("recorded fork errnum %d\n", sitter->errnum);
388 else if (what == CHILD_EXEC_FAILED)
390 sitter->have_exec_errnum = TRUE;
391 sitter->errnum = arg;
392 _dbus_verbose ("recorded exec errnum %d\n", sitter->errnum);
401 r = read_pid (fd, &pid, &error);
405 case READ_STATUS_ERROR:
406 _dbus_warn ("Failed to read PID from fd %d: %s\n", fd, error.message);
407 dbus_error_free (&error);
409 case READ_STATUS_EOF:
415 sitter->grandchild_pid = pid;
417 _dbus_verbose ("recorded grandchild pid %d\n", sitter->grandchild_pid);
421 _dbus_warn ("Unknown message received from babysitter process\n");
430 close_socket_to_babysitter (DBusBabysitter *sitter)
432 _dbus_verbose ("Closing babysitter\n");
433 close (sitter->socket_to_babysitter);
434 sitter->socket_to_babysitter = -1;
438 close_error_pipe_from_child (DBusBabysitter *sitter)
440 _dbus_verbose ("Closing child error\n");
441 close (sitter->error_pipe_from_child);
442 sitter->error_pipe_from_child = -1;
446 handle_babysitter_socket (DBusBabysitter *sitter,
449 /* Even if we have POLLHUP, we want to keep reading
450 * data until POLLIN goes away; so this function only
451 * looks at HUP/ERR if no IN is set.
453 if (revents & _DBUS_POLLIN)
455 _dbus_verbose ("Reading data from babysitter\n");
456 if (read_data (sitter, sitter->socket_to_babysitter) != READ_STATUS_OK)
457 close_socket_to_babysitter (sitter);
459 else if (revents & (_DBUS_POLLERR | _DBUS_POLLHUP))
461 close_socket_to_babysitter (sitter);
466 handle_error_pipe (DBusBabysitter *sitter,
469 if (revents & _DBUS_POLLIN)
471 _dbus_verbose ("Reading data from child error\n");
472 if (read_data (sitter, sitter->error_pipe_from_child) != READ_STATUS_OK)
473 close_error_pipe_from_child (sitter);
475 else if (revents & (_DBUS_POLLERR | _DBUS_POLLHUP))
477 close_error_pipe_from_child (sitter);
481 /* returns whether there were any poll events handled */
483 babysitter_iteration (DBusBabysitter *sitter,
488 dbus_bool_t descriptors_ready;
490 descriptors_ready = FALSE;
494 if (sitter->error_pipe_from_child >= 0)
496 fds[i].fd = sitter->error_pipe_from_child;
497 fds[i].events = _DBUS_POLLIN;
502 if (sitter->socket_to_babysitter >= 0)
504 fds[i].fd = sitter->socket_to_babysitter;
505 fds[i].events = _DBUS_POLLIN;
514 ret = _dbus_poll (fds, i, 0);
515 if (ret == 0 && block)
516 ret = _dbus_poll (fds, i, -1);
520 descriptors_ready = TRUE;
525 if (fds[i].fd == sitter->error_pipe_from_child)
526 handle_error_pipe (sitter, fds[i].revents);
527 else if (fds[i].fd == sitter->socket_to_babysitter)
528 handle_babysitter_socket (sitter, fds[i].revents);
533 return descriptors_ready;
537 * Macro returns #TRUE if the babysitter still has live sockets open to the
538 * babysitter child or the grandchild.
540 #define LIVE_CHILDREN(sitter) ((sitter)->socket_to_babysitter >= 0 || (sitter)->error_pipe_from_child >= 0)
544 * Blocks until the babysitter process gives us the PID of the spawned grandchild,
545 * then kills the spawned grandchild.
547 * @param sitter the babysitter object
550 _dbus_babysitter_kill_child (DBusBabysitter *sitter)
552 /* be sure we have the PID of the child */
553 while (LIVE_CHILDREN (sitter) &&
554 sitter->grandchild_pid == -1)
555 babysitter_iteration (sitter, TRUE);
557 if (sitter->grandchild_pid == -1)
558 return; /* child is already dead, or we're so hosed we'll never recover */
560 kill (sitter->grandchild_pid, SIGKILL);
564 * Checks whether the child has exited, without blocking.
566 * @param sitter the babysitter
569 _dbus_babysitter_get_child_exited (DBusBabysitter *sitter)
572 /* Be sure we're up-to-date */
573 while (LIVE_CHILDREN (sitter) &&
574 babysitter_iteration (sitter, FALSE))
577 /* We will have exited the babysitter when the child has exited */
578 return sitter->socket_to_babysitter < 0;
582 _dbus_babysitter_block_for_child_exit (DBusBabysitter *sitter)
584 while (LIVE_CHILDREN (sitter))
585 babysitter_iteration (sitter, TRUE);
589 * Sets the #DBusError with an explanation of why the spawned
590 * child process exited (on a signal, or whatever). If
591 * the child process has not exited, does nothing (error
592 * will remain unset).
594 * @param sitter the babysitter
595 * @param error an error to fill in
598 _dbus_babysitter_set_child_exit_error (DBusBabysitter *sitter,
601 if (!_dbus_babysitter_get_child_exited (sitter))
604 /* Note that if exec fails, we will also get a child status
605 * from the babysitter saying the child exited,
606 * so we need to give priority to the exec error
608 if (sitter->have_exec_errnum)
610 dbus_set_error (error, DBUS_ERROR_SPAWN_EXEC_FAILED,
611 "Failed to execute program %s: %s",
612 sitter->executable, _dbus_strerror (sitter->errnum));
614 else if (sitter->have_fork_errnum)
616 dbus_set_error (error, DBUS_ERROR_NO_MEMORY,
617 "Failed to fork a new process %s: %s",
618 sitter->executable, _dbus_strerror (sitter->errnum));
620 else if (sitter->have_child_status)
622 if (WIFEXITED (sitter->status))
623 dbus_set_error (error, DBUS_ERROR_SPAWN_CHILD_EXITED,
624 "Process %s exited with status %d",
625 sitter->executable, WEXITSTATUS (sitter->status));
626 else if (WIFSIGNALED (sitter->status))
627 dbus_set_error (error, DBUS_ERROR_SPAWN_CHILD_SIGNALED,
628 "Process %s received signal %d",
629 sitter->executable, WTERMSIG (sitter->status));
631 dbus_set_error (error, DBUS_ERROR_FAILED,
632 "Process %s exited abnormally",
637 dbus_set_error (error, DBUS_ERROR_FAILED,
638 "Process %s exited, reason unknown",
644 * Sets watch functions to notify us when the
645 * babysitter object needs to read/write file descriptors.
647 * @param sitter the babysitter
648 * @param add_function function to begin monitoring a new descriptor.
649 * @param remove_function function to stop monitoring a descriptor.
650 * @param toggled_function function to notify when the watch is enabled/disabled
651 * @param data data to pass to add_function and remove_function.
652 * @param free_data_function function to be called to free the data.
653 * @returns #FALSE on failure (no memory)
656 _dbus_babysitter_set_watch_functions (DBusBabysitter *sitter,
657 DBusAddWatchFunction add_function,
658 DBusRemoveWatchFunction remove_function,
659 DBusWatchToggledFunction toggled_function,
661 DBusFreeFunction free_data_function)
663 return _dbus_watch_list_set_functions (sitter->watches,
672 * Handles watch when descriptors are ready.
674 * @param sitter the babysitter.
675 * @param watch the watch object
676 * @param condition the descriptor conditions
677 * @returns #FALSE if there wasn't enough memory.
681 _dbus_babysitter_handle_watch (DBusBabysitter *sitter,
683 unsigned int condition)
689 if (condition & DBUS_WATCH_READABLE)
690 revents |= _DBUS_POLLIN;
691 if (condition & DBUS_WATCH_ERROR)
692 revents |= _DBUS_POLLERR;
693 if (condition & DBUS_WATCH_HANGUP)
694 revents |= _DBUS_POLLHUP;
696 fd = dbus_watch_get_fd (watch);
698 if (fd == sitter->error_pipe_from_child)
699 handle_error_pipe (sitter, revents);
700 else if (fd == sitter->socket_to_babysitter)
701 handle_babysitter_socket (sitter, revents);
710 /* Avoids a danger in threaded situations (calling close()
711 * on a file descriptor twice, and another thread has
712 * re-opened it since the first close)
715 close_and_invalidate (int *fd)
734 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
738 dbus_set_error (error,
739 DBUS_ERROR_SPAWN_FAILED,
740 "Failed to create pipe for communicating with child process (%s)",
741 _dbus_strerror (errno));
749 do_write (int fd, const void *buf, size_t count)
751 size_t bytes_written;
758 ret = write (fd, ((const char*)buf) + bytes_written, count - bytes_written);
766 _dbus_warn ("Failed to write data to pipe!\n");
767 _exit (1); /* give up, we suck */
771 bytes_written += ret;
773 if (bytes_written < count)
778 write_err_and_exit (int fd, int msg)
782 do_write (fd, &msg, sizeof (msg));
783 do_write (fd, &en, sizeof (en));
789 write_pid (int fd, pid_t pid)
793 do_write (fd, &msg, sizeof (msg));
794 do_write (fd, &pid, sizeof (pid));
798 write_status_and_exit (int fd, int status)
800 int msg = CHILD_EXITED;
802 do_write (fd, &msg, sizeof (msg));
803 do_write (fd, &status, sizeof (status));
809 do_exec (int child_err_report_fd,
811 DBusSpawnChildSetupFunc child_setup,
814 #ifdef DBUS_BUILD_TESTS
819 (* child_setup) (user_data);
821 #ifdef DBUS_BUILD_TESTS
822 max_open = sysconf (_SC_OPEN_MAX);
824 for (i = 3; i < max_open; i++)
828 if (i == child_err_report_fd)
831 retval = fcntl (i, F_GETFD);
833 if (retval != -1 && !(retval & FD_CLOEXEC))
834 _dbus_warn ("Fd %d did not have the close-on-exec flag set!\n", i);
838 execv (argv[0], argv);
841 write_err_and_exit (child_err_report_fd,
846 check_babysit_events (pid_t grandchild_pid,
853 ret = waitpid (grandchild_pid, &status, WNOHANG);
857 _dbus_verbose ("no child exited\n");
859 ; /* no child exited */
863 /* This isn't supposed to happen. */
864 _dbus_warn ("unexpected waitpid() failure in check_babysit_events(): %s\n",
865 _dbus_strerror (errno));
868 else if (ret == grandchild_pid)
871 write_status_and_exit (parent_pipe, status);
875 _dbus_warn ("waitpid() reaped pid %d that we've never heard of\n",
880 if (revents & _DBUS_POLLIN)
882 /* Data to read from parent */
886 if (revents & (_DBUS_POLLERR | _DBUS_POLLHUP))
888 /* Parent is gone, so we just exit */
893 static int babysit_sigchld_pipe = -1;
896 babysit_signal_handler (int signo)
900 write (babysit_sigchld_pipe, &b, 1);
906 babysit (pid_t grandchild_pid,
909 struct sigaction act;
913 /* I thought SIGCHLD would just wake up the poll, but
914 * that didn't seem to work, so added this pipe.
915 * Probably the pipe is more likely to work on busted
916 * operating systems anyhow.
918 if (pipe (sigchld_pipe) < 0)
920 _dbus_warn ("Not enough file descriptors to create pipe in babysitter process\n");
924 babysit_sigchld_pipe = sigchld_pipe[WRITE_END];
926 sigemptyset (&empty_mask);
927 act.sa_handler = babysit_signal_handler;
928 act.sa_mask = empty_mask;
930 sigaction (SIGCHLD, &act, 0);
932 write_pid (parent_pipe, grandchild_pid);
934 check_babysit_events (grandchild_pid, parent_pipe, 0);
940 pfds[0].fd = parent_pipe;
941 pfds[0].events = _DBUS_POLLIN;
944 pfds[1].fd = sigchld_pipe[READ_END];
945 pfds[1].events = _DBUS_POLLIN;
948 _dbus_poll (pfds, _DBUS_N_ELEMENTS (pfds), -1);
950 if (pfds[0].revents != 0)
952 check_babysit_events (grandchild_pid, parent_pipe, pfds[0].revents);
954 else if (pfds[1].revents & _DBUS_POLLIN)
957 read (sigchld_pipe[READ_END], &b, 1);
958 /* do waitpid check */
959 check_babysit_events (grandchild_pid, parent_pipe, 0);
967 * Spawns a new process. The executable name and argv[0]
968 * are the same, both are provided in argv[0]. The child_setup
969 * function is passed the given user_data and is run in the child
970 * just before calling exec().
972 * Also creates a "babysitter" which tracks the status of the
973 * child process, advising the parent if the child exits.
974 * If the spawn fails, no babysitter is created.
975 * If sitter_p is #NULL, no babysitter is kept.
977 * @param sitter_p return location for babysitter or #NULL
978 * @param argv the executable and arguments
979 * @param child_setup function to call in child pre-exec()
980 * @param user_data user data for setup function
981 * @param error error object to be filled in if function fails
982 * @returns #TRUE on success, #FALSE if error is filled in
985 _dbus_spawn_async_with_babysitter (DBusBabysitter **sitter_p,
987 DBusSpawnChildSetupFunc child_setup,
991 DBusBabysitter *sitter;
992 int child_err_report_pipe[2] = { -1, -1 };
993 int babysitter_pipe[2] = { -1, -1 };
996 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1001 sitter = _dbus_babysitter_new ();
1004 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1008 sitter->executable = _dbus_strdup (argv[0]);
1009 if (sitter->executable == NULL)
1011 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1012 goto cleanup_and_fail;
1015 if (!make_pipe (child_err_report_pipe, error))
1016 goto cleanup_and_fail;
1018 _dbus_fd_set_close_on_exec (child_err_report_pipe[READ_END]);
1020 if (!_dbus_full_duplex_pipe (&babysitter_pipe[0], &babysitter_pipe[1], TRUE, error))
1021 goto cleanup_and_fail;
1023 _dbus_fd_set_close_on_exec (babysitter_pipe[0]);
1024 _dbus_fd_set_close_on_exec (babysitter_pipe[1]);
1030 dbus_set_error (error,
1031 DBUS_ERROR_SPAWN_FORK_FAILED,
1032 "Failed to fork (%s)",
1033 _dbus_strerror (errno));
1034 goto cleanup_and_fail;
1038 /* Immediate child, this is the babysitter process. */
1041 /* Be sure we crash if the parent exits
1042 * and we write to the err_report_pipe
1044 signal (SIGPIPE, SIG_DFL);
1046 /* Close the parent's end of the pipes. */
1047 close_and_invalidate (&child_err_report_pipe[READ_END]);
1048 close_and_invalidate (&babysitter_pipe[0]);
1050 /* Create the child that will exec () */
1051 grandchild_pid = fork ();
1053 if (grandchild_pid < 0)
1055 write_err_and_exit (babysitter_pipe[1],
1057 _dbus_assert_not_reached ("Got to code after write_err_and_exit()");
1059 else if (grandchild_pid == 0)
1061 do_exec (child_err_report_pipe[WRITE_END],
1063 child_setup, user_data);
1064 _dbus_assert_not_reached ("Got to code after exec() - should have exited on error");
1068 babysit (grandchild_pid, babysitter_pipe[1]);
1069 _dbus_assert_not_reached ("Got to code after babysit()");
1075 sitter->error_watch = _dbus_watch_new (child_err_report_pipe[READ_END],
1076 DBUS_WATCH_READABLE,
1078 if (sitter->error_watch == NULL)
1080 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1081 goto cleanup_and_fail;
1084 if (!_dbus_watch_list_add_watch (sitter->watches, sitter->error_watch))
1086 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1087 goto cleanup_and_fail;
1090 sitter->sitter_watch = _dbus_watch_new (babysitter_pipe[0],
1091 DBUS_WATCH_READABLE,
1093 if (sitter->sitter_watch == NULL)
1095 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1096 goto cleanup_and_fail;
1099 if (!_dbus_watch_list_add_watch (sitter->watches, sitter->sitter_watch))
1101 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
1102 goto cleanup_and_fail;
1105 /* Close the uncared-about ends of the pipes */
1106 close_and_invalidate (&child_err_report_pipe[WRITE_END]);
1107 close_and_invalidate (&babysitter_pipe[1]);
1109 sitter->socket_to_babysitter = babysitter_pipe[0];
1110 babysitter_pipe[0] = -1;
1112 sitter->error_pipe_from_child = child_err_report_pipe[READ_END];
1113 child_err_report_pipe[READ_END] = -1;
1115 sitter->sitter_pid = pid;
1117 if (sitter_p != NULL)
1120 _dbus_babysitter_unref (sitter);
1122 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
1129 _DBUS_ASSERT_ERROR_IS_SET (error);
1131 close_and_invalidate (&child_err_report_pipe[READ_END]);
1132 close_and_invalidate (&child_err_report_pipe[WRITE_END]);
1133 close_and_invalidate (&babysitter_pipe[0]);
1134 close_and_invalidate (&babysitter_pipe[1]);
1137 _dbus_babysitter_unref (sitter);
1144 #ifdef DBUS_BUILD_TESTS
1147 check_spawn_nonexistent (void *data)
1149 char *argv[4] = { NULL, NULL, NULL, NULL };
1150 DBusBabysitter *sitter;
1155 dbus_error_init (&error);
1157 /*** Test launching nonexistent binary */
1159 argv[0] = "/this/does/not/exist/32542sdgafgafdg";
1160 if (_dbus_spawn_async_with_babysitter (&sitter, argv,
1164 _dbus_babysitter_block_for_child_exit (sitter);
1165 _dbus_babysitter_set_child_exit_error (sitter, &error);
1169 _dbus_babysitter_unref (sitter);
1171 if (!dbus_error_is_set (&error))
1173 _dbus_warn ("Did not get an error launching nonexistent executable\n");
1177 if (!(dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY) ||
1178 dbus_error_has_name (&error, DBUS_ERROR_SPAWN_EXEC_FAILED)))
1180 _dbus_warn ("Not expecting error when launching nonexistent executable: %s: %s\n",
1181 error.name, error.message);
1182 dbus_error_free (&error);
1186 dbus_error_free (&error);
1192 check_spawn_segfault (void *data)
1194 char *argv[4] = { NULL, NULL, NULL, NULL };
1195 DBusBabysitter *sitter;
1200 dbus_error_init (&error);
1202 /*** Test launching segfault binary */
1204 argv[0] = TEST_SEGFAULT_BINARY;
1205 if (_dbus_spawn_async_with_babysitter (&sitter, argv,
1209 _dbus_babysitter_block_for_child_exit (sitter);
1210 _dbus_babysitter_set_child_exit_error (sitter, &error);
1214 _dbus_babysitter_unref (sitter);
1216 if (!dbus_error_is_set (&error))
1218 _dbus_warn ("Did not get an error launching segfaulting binary\n");
1222 if (!(dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY) ||
1223 dbus_error_has_name (&error, DBUS_ERROR_SPAWN_CHILD_SIGNALED)))
1225 _dbus_warn ("Not expecting error when launching segfaulting executable: %s: %s\n",
1226 error.name, error.message);
1227 dbus_error_free (&error);
1231 dbus_error_free (&error);
1237 check_spawn_exit (void *data)
1239 char *argv[4] = { NULL, NULL, NULL, NULL };
1240 DBusBabysitter *sitter;
1245 dbus_error_init (&error);
1247 /*** Test launching exit failure binary */
1249 argv[0] = TEST_EXIT_BINARY;
1250 if (_dbus_spawn_async_with_babysitter (&sitter, argv,
1254 _dbus_babysitter_block_for_child_exit (sitter);
1255 _dbus_babysitter_set_child_exit_error (sitter, &error);
1259 _dbus_babysitter_unref (sitter);
1261 if (!dbus_error_is_set (&error))
1263 _dbus_warn ("Did not get an error launching binary that exited with failure code\n");
1267 if (!(dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY) ||
1268 dbus_error_has_name (&error, DBUS_ERROR_SPAWN_CHILD_EXITED)))
1270 _dbus_warn ("Not expecting error when launching exiting executable: %s: %s\n",
1271 error.name, error.message);
1272 dbus_error_free (&error);
1276 dbus_error_free (&error);
1282 check_spawn_and_kill (void *data)
1284 char *argv[4] = { NULL, NULL, NULL, NULL };
1285 DBusBabysitter *sitter;
1290 dbus_error_init (&error);
1292 /*** Test launching sleeping binary then killing it */
1294 argv[0] = TEST_SLEEP_FOREVER_BINARY;
1295 if (_dbus_spawn_async_with_babysitter (&sitter, argv,
1299 _dbus_babysitter_kill_child (sitter);
1301 _dbus_babysitter_block_for_child_exit (sitter);
1303 _dbus_babysitter_set_child_exit_error (sitter, &error);
1307 _dbus_babysitter_unref (sitter);
1309 if (!dbus_error_is_set (&error))
1311 _dbus_warn ("Did not get an error after killing spawned binary\n");
1315 if (!(dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY) ||
1316 dbus_error_has_name (&error, DBUS_ERROR_SPAWN_CHILD_SIGNALED)))
1318 _dbus_warn ("Not expecting error when killing executable: %s: %s\n",
1319 error.name, error.message);
1320 dbus_error_free (&error);
1324 dbus_error_free (&error);
1330 _dbus_spawn_test (const char *test_data_dir)
1332 if (!_dbus_test_oom_handling ("spawn_nonexistent",
1333 check_spawn_nonexistent,
1337 if (!_dbus_test_oom_handling ("spawn_segfault",
1338 check_spawn_segfault,
1342 if (!_dbus_test_oom_handling ("spawn_exit",
1347 if (!_dbus_test_oom_handling ("spawn_and_kill",
1348 check_spawn_and_kill,