static dbus_bool_t
handle_watch (DBusWatch *watch,
unsigned int condition,
void *data)
{
DBusBabysitter *sitter = data;
int revents;
int fd;
revents = 0;
if (condition & DBUS_WATCH_READABLE)
revents |= _DBUS_POLLIN;
if (condition & DBUS_WATCH_ERROR)
revents |= _DBUS_POLLERR;
if (condition & DBUS_WATCH_HANGUP)
revents |= _DBUS_POLLHUP;
fd = dbus_watch_get_fd (watch);
if (fd == sitter->error_pipe_from_child)
handle_error_pipe (sitter, revents);
else if (fd == sitter->socket_to_babysitter)
handle_babysitter_socket (sitter, revents);
while (LIVE_CHILDREN (sitter) &&
babysitter_iteration (sitter, FALSE))
;
return TRUE;
}
static dbus_bool_t
handle_watch (DBusWatch *watch,
unsigned int condition,
void *data)
{
DBusBabysitter *sitter = data;
int revents;
int fd;
revents = 0;
if (condition & DBUS_WATCH_READABLE)
revents |= _DBUS_POLLIN;
if (condition & DBUS_WATCH_ERROR)
revents |= _DBUS_POLLERR;
if (condition & DBUS_WATCH_HANGUP)
revents |= _DBUS_POLLHUP;
fd = dbus_watch_get_socket (watch);
if (fd == sitter->error_pipe_from_child)
handle_error_pipe (sitter, revents);
else if (fd == sitter->socket_to_babysitter)
handle_babysitter_socket (sitter, revents);
while (LIVE_CHILDREN (sitter) &&
babysitter_iteration (sitter, FALSE))
;
/* Those might have closed the sockets we're watching. Before returning
* to the main loop, we must sort that out. */
if (sitter->error_watch != NULL && sitter->error_pipe_from_child == -1)
{
_dbus_watch_invalidate (sitter->error_watch);
if (sitter->watches != NULL)
_dbus_watch_list_remove_watch (sitter->watches, sitter->error_watch);
_dbus_watch_unref (sitter->error_watch);
sitter->error_watch = NULL;
}
if (sitter->sitter_watch != NULL && sitter->socket_to_babysitter == -1)
{
_dbus_watch_invalidate (sitter->sitter_watch);
if (sitter->watches != NULL)
_dbus_watch_list_remove_watch (sitter->watches, sitter->sitter_watch);
_dbus_watch_unref (sitter->sitter_watch);
sitter->sitter_watch = NULL;
}
return TRUE;
}
/**
* Checks whether the child has exited, without blocking.
*
* @param sitter the babysitter
*/
dbus_bool_t
_dbus_babysitter_get_child_exited (DBusBabysitter *sitter)
{
/* Be sure we're up-to-date */
while (LIVE_CHILDREN (sitter) &&
babysitter_iteration (sitter, FALSE))
;
/* We will have exited the babysitter when the child has exited */
return sitter->socket_to_babysitter.fd < 0;
}
/**
* Blocks until the babysitter process gives us the PID of the spawned grandchild,
* then kills the spawned grandchild.
*
* @param sitter the babysitter object
*/
void
_dbus_babysitter_kill_child (DBusBabysitter *sitter)
{
/* be sure we have the PID of the child */
while (LIVE_CHILDREN (sitter) &&
sitter->grandchild_pid == -1)
babysitter_iteration (sitter, TRUE);
_dbus_verbose ("Got child PID %ld for killing\n",
(long) sitter->grandchild_pid);
if (sitter->grandchild_pid == -1)
return; /* child is already dead, or we're so hosed we'll never recover */
kill (sitter->grandchild_pid, SIGKILL);
}
static dbus_bool_t
handle_watch (DBusWatch *watch,
unsigned int condition,
void *data)
{
DBusBabysitter *sitter = _dbus_babysitter_ref (data);
int revents;
int fd;
revents = 0;
if (condition & DBUS_WATCH_READABLE)
revents |= _DBUS_POLLIN;
if (condition & DBUS_WATCH_ERROR)
revents |= _DBUS_POLLERR;
if (condition & DBUS_WATCH_HANGUP)
revents |= _DBUS_POLLHUP;
fd = dbus_watch_get_socket (watch);
if (fd == sitter->error_pipe_from_child)
handle_error_pipe (sitter, revents);
else if (fd == sitter->socket_to_babysitter.fd)
handle_babysitter_socket (sitter, revents);
while (LIVE_CHILDREN (sitter) &&
babysitter_iteration (sitter, FALSE))
;
/* fd.o #32992: if the handle_* methods closed their sockets, they previously
* didn't always remove the watches. Check that we don't regress. */
_dbus_assert (sitter->socket_to_babysitter.fd != -1 || sitter->sitter_watch == NULL);
_dbus_assert (sitter->error_pipe_from_child != -1 || sitter->error_watch == NULL);
if (_dbus_babysitter_get_child_exited (sitter) &&
sitter->finished_cb != NULL)
{
sitter->finished_cb (sitter, sitter->finished_data);
sitter->finished_cb = NULL;
}
_dbus_babysitter_unref (sitter);
return TRUE;
}
void
_dbus_babysitter_block_for_child_exit (DBusBabysitter *sitter)
{
while (LIVE_CHILDREN (sitter))
babysitter_iteration (sitter, TRUE);
}