5#if !defined(SPAWN_DEBUG) || defined(_MSC_VER)
8#define PING() fprintf (stderr, "%s:%s:%d\n", __FILE__, __FUNCTION__, __LINE__); fflush (stderr)
37#include "dbus-spawn.h"
38#include "dbus-sysdeps.h"
39#include "dbus-sysdeps-win.h"
40#include "dbus-internals.h"
42#include "dbus-protocol.h"
44#define WIN32_LEAN_AND_MEAN
73 DBusBabysitterFinishedFunc finished_cb;
88#ifdef DBUS_ENABLE_VERBOSE_MODE
89 static int enabled = -1;
91 _dbus_trace_ref (
"DBusBabysitter", sitter, old_refcount, new_refcount, why,
92 "DBUS_BABYSITTER_TRACE", &enabled);
97_dbus_babysitter_new (
void)
100 dbus_int32_t old_refcount;
108 _dbus_babysitter_trace_ref (sitter, old_refcount, old_refcount+1, __FUNCTION__);
110 sitter->child_handle =
NULL;
121 sitter->have_spawn_errno =
FALSE;
136 dbus_int32_t old_refcount;
142 _dbus_babysitter_trace_ref (sitter, old_refcount, old_refcount+1, __FUNCTION__);
150 _dbus_verbose (
"Closing babysitter\n");
176 dbus_int32_t old_refcount;
183 _dbus_babysitter_trace_ref (sitter, old_refcount, old_refcount-1, __FUNCTION__);
185 if (old_refcount == 1)
187 close_socket_to_babysitter (sitter);
189 if (sitter->socket_to_main.sock != INVALID_SOCKET)
192 sitter->socket_to_main.sock = INVALID_SOCKET;
195 if (sitter->child_handle !=
NULL)
197 CloseHandle (sitter->child_handle);
198 sitter->child_handle =
NULL;
211 if (sitter->thread_handle)
213 CloseHandle (sitter->thread_handle);
214 sitter->thread_handle =
NULL;
227 if (sitter->child_handle ==
NULL)
231 TerminateProcess (sitter->child_handle, 12345);
243 return (sitter->child_handle ==
NULL);
266 sitter->child_status == STILL_ACTIVE)
269 *status = sitter->child_status;
291 if (sitter->have_spawn_errno)
293 char *emsg = _dbus_win_error_string (sitter->spawn_errno);
295 "Failed to execute program %s: %s",
297 _dbus_win_free_error_string (emsg);
303 "Process %s exited with status %d",
304 sitter->
log_name, sitter->child_status);
310 "Process %s exited, status unknown",
335 unsigned int condition,
351 close_socket_to_babysitter (sitter);
355 sitter->finished_cb !=
NULL)
357 sitter->finished_cb (sitter, sitter->finished_data);
358 sitter->finished_cb =
NULL;
366protect_argv (
char *
const *argv,
374 *new_argv =
dbus_malloc ((argc + 1) *
sizeof (
char *));
375 if (*new_argv ==
NULL)
378 for (i = 0; i < argc; i++)
379 (*new_argv)[i] =
NULL;
392 for (i = 0; i < argc; i++)
394 const char *p = argv[i];
397 int need_dblquotes =
FALSE;
400 if (*p ==
' ' || *p ==
'\t')
401 need_dblquotes =
TRUE;
407 while (*pp && *pp ==
'\\')
416 q = (*new_argv)[i] =
dbus_malloc (len + need_dblquotes*2 + 1);
434 while (*pp && *pp ==
'\\')
448 (*new_argv)[argc] =
NULL;
456compose_string (
char **strings,
char separator)
463 if (!strings || !strings[0])
465 for (i = 0; strings[i]; i++)
466 n += strlen (strings[i]) + 1;
469 buf = p = malloc (n);
472 for (i = 0; strings[i]; i++)
474 strcpy (p, strings[i]);
475 p += strlen (strings[i]);
486build_commandline (
char **argv)
488 return compose_string (argv,
' ');
492build_env_string (
char** envp)
494 return compose_string (envp,
'\0');
498_dbus_spawn_program (
const char *name,
502 PROCESS_INFORMATION pi = {
NULL, 0, 0, 0 };
504 char *arg_string, *env_string;
509 arg_string = build_commandline (argv + 1);
513 arg_string = build_commandline (argv);
516 return INVALID_HANDLE_VALUE;
518 env_string = build_env_string(envp);
520 memset (&si, 0,
sizeof (si));
523#ifdef DBUS_ENABLE_VERBOSE_MODE
525 char *s = compose_string (envp,
';');
526 _dbus_verbose (
"spawning '%s'' with args: '%s' env: '%s'\n", name, arg_string, s);
532 result = CreateProcessA (name, arg_string,
NULL,
NULL,
FALSE, 0,
536 (LPVOID)env_string,
NULL, &si, &pi);
542 return INVALID_HANDLE_VALUE;
544 CloseHandle (pi.hThread);
549static DWORD __stdcall
550babysitter (
void *parameter)
556 if (sitter->child_handle !=
NULL)
562 WaitForSingleObject (sitter->child_handle, INFINITE);
565 ret = GetExitCodeProcess (sitter->child_handle, &status);
568 sitter->child_status = status;
572 CloseHandle (sitter->child_handle);
573 sitter->child_handle =
NULL;
577 send (sitter->socket_to_main.sock,
" ", 1, 0);
586 const char *log_name,
589 DBusSpawnFlags flags _DBUS_GNUC_UNUSED,
590 DBusSpawnChildSetupFunc child_setup _DBUS_GNUC_UNUSED,
591 void *user_data _DBUS_GNUC_UNUSED,
595 DWORD sitter_thread_id;
598 char **my_argv =
NULL;
600 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
603 if (sitter_p !=
NULL)
607 sitter = _dbus_babysitter_new ();
610 _DBUS_SET_OOM (error);
617 _DBUS_SET_OOM (error);
626 _DBUS_SET_OOM (error);
632 &sitter->socket_to_main,
642 _DBUS_SET_OOM (error);
655 _DBUS_SET_OOM (error);
659 argc = protect_argv (argv, &my_argv);
662 _DBUS_SET_OOM (error);
666 _dbus_verbose (
"babysitter: spawn child '%s'\n", my_argv[0]);
669 handle = _dbus_spawn_program (sitter->
log_name, my_argv, (
char **) envp);
677 if (handle == INVALID_HANDLE_VALUE)
679 sitter->child_handle =
NULL;
680 sitter->have_spawn_errno =
TRUE;
681 sitter->spawn_errno = GetLastError();
683 "Failed to spawn child");
687 sitter->child_handle = handle;
690 sitter->thread_handle = (HANDLE) CreateThread (
NULL, 0, babysitter,
693 if (sitter->thread_handle ==
NULL)
697 "Failed to create new thread");
702 if (sitter_p !=
NULL)
707 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
720 DBusBabysitterFinishedFunc finished,
723 sitter->finished_cb = finished;
724 sitter->finished_data = user_data;
727#define LIVE_CHILDREN(sitter) ((sitter)->child_handle != NULL)
735 WaitForSingleObject (sitter->thread_handle, INFINITE);
void(* DBusWatchToggledFunction)(DBusWatch *watch, void *data)
Called when dbus_watch_get_enabled() may return a different value than it did before.
dbus_bool_t(* DBusAddWatchFunction)(DBusWatch *watch, void *data)
Called when libdbus needs a new watch to be monitored by the main loop.
void(* DBusRemoveWatchFunction)(DBusWatch *watch, void *data)
Called when libdbus no longer needs a watch to be monitored by the main loop.
@ DBUS_WATCH_READABLE
As in POLLIN.
void dbus_set_error_const(DBusError *error, const char *name, const char *message)
Assigns an error name and message to a DBusError.
void dbus_set_error(DBusError *error, const char *name, const char *format,...)
Assigns an error name and message to a DBusError.
#define _dbus_assert_not_reached(explanation)
Aborts with an error message if called.
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
dbus_bool_t _dbus_babysitter_get_child_exit_status(DBusBabysitter *sitter, int *status)
Gets the exit status of the child.
void _dbus_babysitter_unref(DBusBabysitter *sitter)
Decrement the reference count on the babysitter object.
dbus_bool_t _dbus_babysitter_get_child_exited(DBusBabysitter *sitter)
Checks whether the child has exited, without blocking.
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.
char * _dbus_strdup(const char *str)
Duplicates a string.
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,...
void _dbus_babysitter_kill_child(DBusBabysitter *sitter)
Blocks until the babysitter process gives us the PID of the spawned grandchild, then kills the spawne...
DBusBabysitter * _dbus_babysitter_ref(DBusBabysitter *sitter)
Increment the reference count on the babysitter object.
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.
#define NULL
A null pointer, defined appropriately for C or C++.
#define TRUE
Expands to "1".
#define FALSE
Expands to "0".
void(* DBusFreeFunction)(void *memory)
The type of a function which frees a block of memory.
void dbus_free(void *memory)
Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
#define dbus_new0(type, count)
Safe macro for using dbus_malloc0().
void dbus_free_string_array(char **str_array)
Frees a NULL-terminated array of strings.
void * dbus_malloc(size_t bytes)
Allocates the given number of bytes, as with standard malloc().
#define DBUS_ERROR_SPAWN_CHILD_EXITED
While starting a new process, the child exited with a status code.
#define DBUS_ERROR_FAILED
A generic error; "something went wrong" - see the error message for more.
#define DBUS_ERROR_SPAWN_EXEC_FAILED
While starting a new process, the exec() call failed.
#define DBUS_ERROR_SPAWN_FORK_FAILED
While starting a new process, the fork() call failed.
dbus_bool_t _dbus_socketpair(DBusSocket *fd1, DBusSocket *fd2, dbus_bool_t blocking, DBusError *error)
Creates pair of connect sockets (as in socketpair()).
dbus_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer.
dbus_bool_t _dbus_close_socket(DBusSocket fd, DBusError *error)
Closes a socket.
dbus_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer.
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
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.
DBusWatchList * _dbus_watch_list_new(void)
Creates a new watch list.
void _dbus_watch_list_free(DBusWatchList *watch_list)
Frees a DBusWatchList.
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.
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.
void _dbus_watch_unref(DBusWatch *watch)
Decrements the reference count of a DBusWatch object and finalizes the object if the count reaches ze...
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...
void _dbus_watch_invalidate(DBusWatch *watch)
Clears the file descriptor from a now-invalid watch object so that no one tries to use it.
An atomic integer safe to increment or decrement from multiple threads.
Babysitter implementation details.
DBusWatch * sitter_watch
Sitter pipe watch.
DBusSocket socket_to_babysitter
Connection to the babysitter process.
unsigned int have_child_status
True if child status has been reaped.
char * log_name
the name under which to log messages about this process being spawned
int refcount
Reference count.
DBusWatchList * watches
Watches.
Object representing an exception.
DBusWatchList implementation details.
Implementation of DBusWatch.