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"    41 #include "dbus-test.h"    42 #include "dbus-protocol.h"    44 #define WIN32_LEAN_AND_MEAN    65     HANDLE start_sync_event;
    80     DBusBabysitterFinishedFunc finished_cb;
    95 #ifdef DBUS_ENABLE_VERBOSE_MODE    96   static int enabled = -1;
    98   _dbus_trace_ref (
"DBusBabysitter", sitter, old_refcount, new_refcount, why,
    99       "DBUS_BABYSITTER_TRACE", &enabled);
   104 _dbus_babysitter_new (
void)
   115   _dbus_babysitter_trace_ref (sitter, old_refcount, old_refcount+1, __FUNCTION__);
   118   if (sitter->start_sync_event == 
NULL)
   124   sitter->child_handle = 
NULL;
   139   sitter->have_spawn_errno = 
FALSE;
   140   sitter->have_child_status = 
FALSE;
   160   _dbus_babysitter_trace_ref (sitter, old_refcount, old_refcount+1, __FUNCTION__);
   168   _dbus_verbose (
"Closing babysitter\n");
   202   _dbus_babysitter_trace_ref (sitter, old_refcount, old_refcount-1, __FUNCTION__);
   204   if (old_refcount == 1)
   206       close_socket_to_babysitter (sitter);
   208       if (sitter->socket_to_main.sock != INVALID_SOCKET)
   211           sitter->socket_to_main.sock = INVALID_SOCKET;
   215       if (sitter->argv != 
NULL)
   217           for (i = 0; i < sitter->argc; i++)
   218             if (sitter->argv[i] != 
NULL)
   221                 sitter->argv[i] = 
NULL;
   227       if (sitter->envp != 
NULL)
   229           char **e = sitter->envp;
   237       if (sitter->child_handle != 
NULL)
   239           CloseHandle (sitter->child_handle);
   240           sitter->child_handle = 
NULL;
   253       if (sitter->start_sync_event != 
NULL)
   256           CloseHandle (sitter->start_sync_event);
   257           sitter->start_sync_event = 
NULL;
   260       if (sitter->thread_handle)
   262           CloseHandle (sitter->thread_handle);
   263           sitter->thread_handle = 
NULL;
   276   if (sitter->child_handle == 
NULL)
   280   TerminateProcess (sitter->child_handle, 12345);
   292   return (sitter->child_handle == 
NULL);
   314   if (!sitter->have_child_status ||
   315       sitter->child_status == STILL_ACTIVE)
   318   *status = sitter->child_status;
   340   if (sitter->have_spawn_errno)
   342       char *emsg = _dbus_win_error_string (sitter->spawn_errno);
   344                       "Failed to execute program %s: %s",
   346       _dbus_win_free_error_string (emsg);
   348   else if (sitter->have_child_status)
   352                       "Process %s exited with status %d",
   353                       sitter->
log_name, sitter->child_status);
   359                       "Process %s exited, status unknown",
   384               unsigned int     condition,
   400   close_socket_to_babysitter (sitter);
   404       sitter->finished_cb != 
NULL)
   406       sitter->finished_cb (sitter, sitter->finished_data);
   407       sitter->finished_cb = 
NULL;
   415 protect_argv (
char  * 
const *argv,
   423   *new_argv = 
dbus_malloc ((argc + 1) * 
sizeof (
char *));
   424   if (*new_argv == 
NULL)
   427   for (i = 0; i < argc; i++)
   428     (*new_argv)[i] = 
NULL;
   441   for (i = 0; i < argc; i++)
   443       const char *p = argv[i];
   446       int need_dblquotes = 
FALSE;
   449           if (*p == 
' ' || *p == 
'\t')
   450             need_dblquotes = 
TRUE;
   456               while (*pp && *pp == 
'\\')
   465       q = (*new_argv)[i] = 
dbus_malloc (len + need_dblquotes*2 + 1);
   483               while (*pp && *pp == 
'\\')
   497   (*new_argv)[argc] = 
NULL;
   505 compose_string (
char **strings, 
char separator)
   512   if (!strings || !strings[0])
   514   for (i = 0; strings[i]; i++)
   515     n += strlen (strings[i]) + 1;
   518   buf = p = malloc (n);
   521   for (i = 0; strings[i]; i++)
   523       strcpy (p, strings[i]);
   524       p += strlen (strings[i]);
   535 build_commandline (
char **argv)
   537   return compose_string (argv, 
' ');
   541 build_env_string (
char** envp)
   543   return compose_string (envp, 
'\0');
   547 spawn_program (
char* name, 
char** argv, 
char** envp)
   549   PROCESS_INFORMATION pi = { 
NULL, 0, 0, 0 };
   551   char *arg_string, *env_string;
   556     arg_string = build_commandline (argv + 1);
   560   arg_string = build_commandline (argv);
   563     return INVALID_HANDLE_VALUE;
   565   env_string = build_env_string(envp);
   567   memset (&si, 0, 
sizeof (si));
   570   result = CreateProcessA (name, arg_string, 
NULL, 
NULL, 
FALSE, 0,
   574                            (LPVOID)env_string, 
NULL, &si, &pi);
   580     return INVALID_HANDLE_VALUE;
   582   CloseHandle (pi.hThread);
   587 static DWORD __stdcall
   588 babysitter (
void *parameter)
   595   _dbus_verbose (
"babysitter: spawning %s\n", sitter->
log_name);
   598   handle = spawn_program (sitter->
log_name, sitter->argv, sitter->envp);
   601   if (handle != INVALID_HANDLE_VALUE)
   603       sitter->child_handle = handle;
   607       sitter->child_handle = 
NULL;
   608       sitter->have_spawn_errno = 
TRUE;
   609       sitter->spawn_errno = GetLastError();
   613   SetEvent (sitter->start_sync_event);
   615   if (sitter->child_handle != 
NULL)
   621       WaitForSingleObject (sitter->child_handle, INFINITE);
   624       ret = GetExitCodeProcess (sitter->child_handle, &status);
   627           sitter->child_status = status;
   628           sitter->have_child_status = 
TRUE;
   631       CloseHandle (sitter->child_handle);
   632       sitter->child_handle = 
NULL;
   636   send (sitter->socket_to_main.sock, 
" ", 1, 0);
   645                                    const char                *log_name,
   648                                    DBusSpawnFlags             flags _DBUS_GNUC_UNUSED,
   649                                    DBusSpawnChildSetupFunc    child_setup _DBUS_GNUC_UNUSED,
   650                                    void                      *user_data _DBUS_GNUC_UNUSED,
   654   DWORD sitter_thread_id;
   656   _DBUS_ASSERT_ERROR_IS_CLEAR (error);
   659   if (sitter_p != 
NULL)
   663   sitter = _dbus_babysitter_new ();
   666       _DBUS_SET_OOM (error);
   673       _DBUS_SET_OOM (error);
   682       _DBUS_SET_OOM (error);
   688                          &sitter->socket_to_main,
   698       _DBUS_SET_OOM (error);
   711       _DBUS_SET_OOM (error);
   715   sitter->argc = protect_argv (argv, &sitter->argv);
   716   if (sitter->argc == -1)
   718       _DBUS_SET_OOM (error);
   724   sitter->thread_handle = (HANDLE) CreateThread (
NULL, 0, babysitter,
   727   if (sitter->thread_handle == 
NULL)
   731                             "Failed to create new thread");
   736   WaitForSingleObject (sitter->start_sync_event, INFINITE);
   739   if (sitter_p != 
NULL)
   744   _DBUS_ASSERT_ERROR_IS_CLEAR (error);
   757                                        DBusBabysitterFinishedFunc  finished,
   760   sitter->finished_cb = finished;
   761   sitter->finished_data = user_data;
   764 #define LIVE_CHILDREN(sitter) ((sitter)->child_handle != NULL)   772   WaitForSingleObject (sitter->thread_handle, INFINITE);
 An atomic integer safe to increment or decrement from multiple threads. 
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. 
Implementation of DBusWatch. 
#define NULL
A null pointer, defined appropriately for C or C++. 
#define DBUS_ERROR_SPAWN_EXEC_FAILED
While starting a new process, the exec() call failed. 
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(). 
dbus_bool_t _dbus_socketpair(DBusSocket *fd1, DBusSocket *fd2, dbus_bool_t blocking, DBusError *error)
Creates pair of connect sockets (as in socketpair()). 
void(* DBusWatchToggledFunction)(DBusWatch *watch, void *data)
Called when dbus_watch_get_enabled() may return a different value than it did before. 
#define DBUS_ERROR_SPAWN_CHILD_EXITED
While starting a new process, the child exited with a status code. 
#define _dbus_assert(condition)
Aborts with an error message if the condition is false. 
void _dbus_watch_list_free(DBusWatchList *watch_list)
Frees a DBusWatchList. 
DBusWatchList * _dbus_watch_list_new(void)
Creates a new watch list. 
dbus_bool_t _dbus_close_socket(DBusSocket fd, DBusError *error)
Closes a socket. 
dbus_bool_t _dbus_babysitter_get_child_exited(DBusBabysitter *sitter)
Checks whether the child has exited, without blocking. 
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. 
DBusWatchList * watches
Watches. 
void * dbus_malloc(size_t bytes)
Allocates the given number of bytes, as with standard malloc(). 
#define dbus_new0(type, count)
Safe macro for using dbus_malloc0(). 
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE. 
DBusWatch * sitter_watch
Sitter pipe watch. 
dbus_bool_t _dbus_babysitter_get_child_exit_status(DBusBabysitter *sitter, int *status)
Gets the exit status of the 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...
Babysitter implementation details. 
dbus_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer. 
dbus_bool_t _dbus_spawn_async_with_babysitter(DBusBabysitter **sitter_p, const char *log_name, char *const *argv, char **env, DBusSpawnFlags flags, DBusSpawnChildSetupFunc child_setup, void *user_data, DBusError *error)
Spawns a new process. 
void _dbus_watch_invalidate(DBusWatch *watch)
Clears the file descriptor from a now-invalid watch object so that no one tries to use it...
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...
Object representing an exception. 
void dbus_set_error(DBusError *error, const char *name, const char *format,...)
Assigns an error name and message to a DBusError. 
#define TRUE
Expands to "1". 
#define _dbus_assert_not_reached(explanation)
Aborts with an error message if called. 
#define DBUS_ERROR_FAILED
A generic error; "something went wrong" - see the error message for more. 
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...
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. 
DBusWatchList implementation details. 
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_babysitter_unref(DBusBabysitter *sitter)
Decrement the reference count on the babysitter object. 
dbus_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer. 
#define DBUS_ERROR_SPAWN_FORK_FAILED
While starting a new process, the fork() call failed. 
char * log_name
the name under which to log messages about this process being spawned 
void _dbus_watch_unref(DBusWatch *watch)
Decrements the reference count of a DBusWatch object and finalizes the object if the count reaches ze...
#define FALSE
Expands to "0". 
void dbus_set_error_const(DBusError *error, const char *name, const char *message)
Assigns an error name and message to a DBusError. 
DBusSocket socket_to_babysitter
Connection to the babysitter process. 
int dbus_int32_t
A 32-bit signed integer on all platforms. 
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...
DBusBabysitter * _dbus_babysitter_ref(DBusBabysitter *sitter)
Increment the reference count on the babysitter object.