static dbus_bool_t add_watch(DBusWatch *watch, void *data) { GIOCondition cond = G_IO_HUP | G_IO_ERR; DBusConnection *conn = data; struct watch_info *info; int fd, flags; if (!dbus_watch_get_enabled(watch)) return TRUE; info = g_new(struct watch_info, 1); fd = dbus_watch_get_unix_fd(watch); info->io = g_io_channel_unix_new(fd); info->conn = dbus_connection_ref(conn); dbus_watch_set_data(watch, info, NULL); flags = dbus_watch_get_flags(watch); if (flags & DBUS_WATCH_READABLE) cond |= G_IO_IN; if (flags & DBUS_WATCH_WRITABLE) cond |= G_IO_OUT; info->watch_id = g_io_add_watch(info->io, cond, watch_func, watch); return TRUE; }
static dbus_bool_t AddWatch(DBusWatch *aWatch, void *aData) { DBusThread *dbt = (DBusThread *)aData; if (dbus_watch_get_enabled(aWatch)) { // note that we can't just send the watch and inspect it later // because we may get a removeWatch call before this data is reacted // to by our eventloop and remove this watch.. reading the add first // and then inspecting the recently deceased watch would be bad. char control = DBUS_EVENT_LOOP_ADD; if (write(dbt->mControlFdW.get(), &control, sizeof(char)) < 0) { LOG("Cannot write DBus add watch control data to socket!\n"); return false; } int fd = dbus_watch_get_unix_fd(aWatch); if (write(dbt->mControlFdW.get(), &fd, sizeof(int)) < 0) { LOG("Cannot write DBus add watch descriptor data to socket!\n"); return false; } unsigned int flags = dbus_watch_get_flags(aWatch); if (write(dbt->mControlFdW.get(), &flags, sizeof(unsigned int)) < 0) { LOG("Cannot write DBus add watch flag data to socket!\n"); return false; } if (write(dbt->mControlFdW.get(), &aWatch, sizeof(DBusWatch*)) < 0) { LOG("Cannot write DBus add watch struct data to socket!\n"); return false; } } return true; }
static dbus_bool_t add_watch(DBusWatch *w, void *data) { if (!dbus_watch_get_enabled(w)) return TRUE; ASDBusFd *fd = safecalloc (1, sizeof(ASDBusFd)); fd->fd = dbus_watch_get_unix_fd(w); unsigned int flags = dbus_watch_get_flags(w); if (get_flags(flags, DBUS_WATCH_READABLE)) fd->readable = True; /*short cond = EV_PERSIST; if (flags & DBUS_WATCH_READABLE) cond |= EV_READ; if (flags & DBUS_WATCH_WRITABLE) cond |= EV_WRITE; */ // TODO add to the list of FDs dbus_watch_set_data(w, fd, NULL); if (ASDBus.watchFds == NULL) ASDBus.watchFds = create_asvector (sizeof(ASDBusFd*)); append_vector(ASDBus.watchFds, &fd, 1); show_debug(__FILE__,__FUNCTION__,__LINE__,"added dbus watch fd=%d watch=%p readable =%d\n", fd->fd, w, fd->readable); return TRUE; }
static dbus_bool_t addWatch(DBusWatch *watch, void *data) { dbus_bool_t result = FALSE; (void)data; if (ARRAY_SIZE(gPollInfo.fds) > (unsigned int)(gPollInfo.nfds)) { unsigned int flags = dbus_watch_get_flags(watch); tObjectEntry * const pEntry = &gPollInfo.objects[gPollInfo.nfds]; pEntry->objtype = OT_WATCH; pEntry->watch = watch; gPollInfo.fds[gPollInfo.nfds].fd = dbus_watch_get_unix_fd(watch); if (TRUE==dbus_watch_get_enabled(watch)) { if (flags&DBUS_WATCH_READABLE) { gPollInfo.fds[gPollInfo.nfds].events |= POLLIN; } if (flags&DBUS_WATCH_WRITABLE) { gPollInfo.fds[gPollInfo.nfds].events |= POLLOUT; } ++gPollInfo.nfds; } result = TRUE; } return result; }
/** * GetPollFds() fills an array of pollfd data structures with : * - the set of enabled dbus watches * - the unix pipe which we use to manually wake up the main loop * * This function must be called with p_sys->lock locked * * @return The number of file descriptors * * @param intf_thread_t *p_intf this interface thread's state * @param struct pollfd *p_fds a pointer to a pollfd array large enough to * contain all the returned data (number of enabled dbus watches + 1) */ static int GetPollFds( intf_thread_t *p_intf, struct pollfd *p_fds ) { intf_sys_t *p_sys = p_intf->p_sys; int i_fds = 1, i_watches = vlc_array_count( p_sys->p_watches ); p_fds[0].fd = p_sys->p_pipe_fds[PIPE_OUT]; p_fds[0].events = POLLIN | POLLPRI; for( int i = 0; i < i_watches; i++ ) { DBusWatch *p_watch = NULL; p_watch = vlc_array_item_at_index( p_sys->p_watches, i ); if( !dbus_watch_get_enabled( p_watch ) ) continue; p_fds[i_fds].fd = dbus_watch_get_unix_fd( p_watch ); int i_flags = dbus_watch_get_flags( p_watch ); if( i_flags & DBUS_WATCH_READABLE ) p_fds[i_fds].events |= POLLIN | POLLPRI; if( i_flags & DBUS_WATCH_WRITABLE ) p_fds[i_fds].events |= POLLOUT; i_fds++; } return i_fds; }
void DBusWatcher::RemoveWatch(DBusWatch* aWatch) { static const char control = DBUS_EVENT_LOOP_REMOVE; ssize_t res = TEMP_FAILURE_RETRY(write(mControlFdW.get(), &control, sizeof(control))); if (res < 0) { LOG("Cannot write DBus remove watch control data to socket!\n"); return; } int fd = dbus_watch_get_unix_fd(aWatch); res = TEMP_FAILURE_RETRY(write(mControlFdW.get(), &fd, sizeof(fd))); if (res < 0) { LOG("Cannot write DBus remove watch descriptor data to socket!\n"); return; } unsigned int flags = dbus_watch_get_flags(aWatch); res = TEMP_FAILURE_RETRY(write(mControlFdW.get(), &flags, sizeof(flags))); if (res < 0) { LOG("Cannot write DBus remove watch flag data to socket!\n"); return; } }
void check_dbus_listeners(fd_set *rset, fd_set *wset, fd_set *eset) { DBusConnection *connection = (DBusConnection *)daemon->dbus; struct watch *w; for (w = daemon->watches; w; w = w->next) if (dbus_watch_get_enabled(w->watch)) { unsigned int flags = 0; int fd = dbus_watch_get_unix_fd(w->watch); if (FD_ISSET(fd, rset)) flags |= DBUS_WATCH_READABLE; if (FD_ISSET(fd, wset)) flags |= DBUS_WATCH_WRITABLE; if (FD_ISSET(fd, eset)) flags |= DBUS_WATCH_ERROR; if (flags != 0) dbus_watch_handle(w->watch, flags); } if (connection) { dbus_connection_ref (connection); while (dbus_connection_dispatch (connection) == DBUS_DISPATCH_DATA_REMAINS); dbus_connection_unref (connection); } }
static dbus_bool_t virDBusAddWatch(DBusWatch *watch, void *data) { int flags = 0; int fd; struct virDBusWatch *info; if (VIR_ALLOC(info) < 0) return 0; if (dbus_watch_get_enabled(watch)) flags = virDBusTranslateWatchFlags(dbus_watch_get_flags(watch)); # if HAVE_DBUS_WATCH_GET_UNIX_FD fd = dbus_watch_get_unix_fd(watch); # else fd = dbus_watch_get_fd(watch); # endif info->bus = (DBusConnection *)data; info->watch = virEventAddHandle(fd, flags, virDBusWatchCallback, watch, NULL); if (info->watch < 0) { VIR_FREE(info); return 0; } dbus_watch_set_data(watch, info, virDBusWatchFree); return 1; }
/* pa_io_event_cb_t IO event handler */ static void handle_io_event(pa_mainloop_api *ea, pa_io_event *e, int fd, pa_io_event_flags_t events, void *userdata) { unsigned int flags = 0; DBusWatch *watch = userdata; #if HAVE_DBUS_WATCH_GET_UNIX_FD pa_assert(fd == dbus_watch_get_unix_fd(watch)); #else pa_assert(fd == dbus_watch_get_fd(watch)); #endif if (!dbus_watch_get_enabled(watch)) { pa_log_warn("Asked to handle disabled watch: %p %i", (void*) watch, fd); return; } if (events & PA_IO_EVENT_INPUT) flags |= DBUS_WATCH_READABLE; if (events & PA_IO_EVENT_OUTPUT) flags |= DBUS_WATCH_WRITABLE; if (events & PA_IO_EVENT_HANGUP) flags |= DBUS_WATCH_HANGUP; if (events & PA_IO_EVENT_ERROR) flags |= DBUS_WATCH_ERROR; dbus_watch_handle(watch, flags); }
/** * Deprecated former name of dbus_watch_get_unix_fd(). * * @param watch the DBusWatch object. * @returns the file descriptor to watch. */ int dbus_watch_get_fd (DBusWatch *watch) { _dbus_return_val_if_fail (watch != NULL, -1); return dbus_watch_get_unix_fd(watch); }
/* * add_watch * Set up hooks into the libevents mainloop for * D-BUS to add file descriptor-based events */ dbus_bool_t sbus_add_watch(DBusWatch *dbus_watch, void *data) { unsigned int flags; uint16_t event_flags; struct sbus_connection *conn; struct sbus_watch_ctx *watch; dbus_bool_t enabled; int fd; conn = talloc_get_type(data, struct sbus_connection); #ifdef HAVE_DBUS_WATCH_GET_UNIX_FD fd = dbus_watch_get_unix_fd(dbus_watch); #else fd = dbus_watch_get_fd(dbus_watch); #endif watch = fd_to_watch(conn->watch_list, fd); if (!watch) { /* does not exist, allocate new one */ watch = talloc_zero(conn, struct sbus_watch_ctx); if (!watch) { DEBUG(0, ("Out of Memory!\n")); return FALSE; } watch->conn = conn; watch->fd = fd; }
//Callbacks implementation unsigned int DBusHandler::Callbacks::addWatch(DBusWatch* watch, void* data) { if(!data) return 0; auto& loop = static_cast<DBusHandler*>(data)->compositor().wlEventLoop(); unsigned int mask = 0; if (dbus_watch_get_enabled(watch)) { unsigned int flags = dbus_watch_get_flags(watch); if (flags & DBUS_WATCH_READABLE) mask |= WL_EVENT_READABLE; if (flags & DBUS_WATCH_WRITABLE) mask |= WL_EVENT_WRITABLE; } int fd = dbus_watch_get_unix_fd(watch); wl_event_source* source = wl_event_loop_add_fd(&loop, fd, mask, dispatchWatch, watch); if (!source) { ny::sendWarning("failed to add dbus watch wl_event_loop_fd"); return 0; } dbus_watch_set_data(watch, source, nullptr); return 1; }
static int get_pollfds(struct dbus* dbus, struct pollfd *pollfds) { int count = 0; Word_t index = 0; DBusWatch** pwatch; JLF(pwatch, dbus->watches, index); while(pwatch != NULL) { DBusWatch* watch = *pwatch; if(dbus_watch_get_enabled(watch)) { pollfds[count].fd = dbus_watch_get_unix_fd(watch); pollfds[count].events = 0; int flags = dbus_watch_get_flags(watch); if(flags & DBUS_WATCH_READABLE) pollfds[count].events |= POLLIN | POLLPRI; if(flags & DBUS_WATCH_WRITABLE) pollfds[count].events |= POLLOUT; count += 1; } JLN(pwatch, dbus->watches, index); } return count; }
/** * Callback for removing D-Bus watch. */ static void cdbus_callback_remove_watch(DBusWatch *watch, void *data) { session_t *ps = data; fds_drop(ps, dbus_watch_get_unix_fd(watch), cdbus_get_watch_cond(watch)); }
static void connection_setup_add_watch(struct ctrl_iface_dbus_priv *iface, DBusWatch *watch) { unsigned int flags; int fd; if (!dbus_watch_get_enabled(watch)) return; flags = dbus_watch_get_flags(watch); fd = dbus_watch_get_unix_fd(watch); eloop_register_sock(fd, EVENT_TYPE_EXCEPTION, process_watch_exception, iface, watch); if (flags & DBUS_WATCH_READABLE) { eloop_register_sock(fd, EVENT_TYPE_READ, process_watch_read, iface, watch); } if (flags & DBUS_WATCH_WRITABLE) { eloop_register_sock(fd, EVENT_TYPE_WRITE, process_watch_write, iface, watch); } dbus_watch_set_data(watch, iface, NULL); }
void set_dbus_listeners(int *maxfdp, fd_set *rset, fd_set *wset, fd_set *eset) { struct watch *w; for (w = daemon->watches; w; w = w->next) if (dbus_watch_get_enabled(w->watch)) { unsigned int flags = dbus_watch_get_flags(w->watch); #if (DBUS_MINOR > 0) int fd = dbus_watch_get_unix_fd(w->watch); #else int fd = dbus_watch_get_fd(w->watch); #endif bump_maxfd(fd, maxfdp); if (flags & DBUS_WATCH_READABLE) FD_SET(fd, rset); if (flags & DBUS_WATCH_WRITABLE) FD_SET(fd, wset); FD_SET(fd, eset); } }
static dbus_bool_t add_watch(DBusWatch *watch, void *data) { struct wpas_dbus_priv *priv = data; unsigned int flags; int fd; if (!dbus_watch_get_enabled(watch)) return TRUE; flags = dbus_watch_get_flags(watch); fd = dbus_watch_get_unix_fd(watch); eloop_register_sock(fd, EVENT_TYPE_EXCEPTION, process_watch_exception, priv, watch); if (flags & DBUS_WATCH_READABLE) { eloop_register_sock(fd, EVENT_TYPE_READ, process_watch_read, priv, watch); } if (flags & DBUS_WATCH_WRITABLE) { eloop_register_sock(fd, EVENT_TYPE_WRITE, process_watch_write, priv, watch); } dbus_watch_set_data(watch, priv, NULL); return TRUE; }
static dbus_bool_t add_watch(DBusWatch *watch, void *data) { DBusConnection *conn = data; GIOCondition cond = G_IO_HUP | G_IO_ERR; GIOChannel *chan; struct watch_info *info; unsigned int flags; int fd; if (!dbus_watch_get_enabled(watch)) return TRUE; info = g_new0(struct watch_info, 1); fd = dbus_watch_get_unix_fd(watch); chan = g_io_channel_unix_new(fd); info->watch = watch; info->conn = dbus_connection_ref(conn); dbus_watch_set_data(watch, info, watch_info_free); flags = dbus_watch_get_flags(watch); if (flags & DBUS_WATCH_READABLE) cond |= G_IO_IN; if (flags & DBUS_WATCH_WRITABLE) cond |= G_IO_OUT; info->id = g_io_add_watch(chan, cond, watch_func, info); g_io_channel_unref(chan); return TRUE; }
static void watch_toggled( DBusWatch *p_watch, void *p_data ) { intf_thread_t *p_intf = (intf_thread_t*) p_data; msg_Dbg( p_intf, "Toggling dbus watch on fd %d", dbus_watch_get_unix_fd( p_watch ) ); if( dbus_watch_get_enabled( p_watch ) ) { msg_Dbg( p_intf, "Watch on fd %d has been enabled, " "the main loops needs to wake up", dbus_watch_get_unix_fd( p_watch ) ); wakeup_main_loop( p_intf ); } }
static int ldbus_watch_get_unix_fd(lua_State *L) { DBusWatch *watch = check_DBusWatch(L, 1); int fd; if (watch == NULL || (fd = dbus_watch_get_unix_fd(watch)) == -1) { lua_pushnil(L); } else { lua_pushinteger(L, fd); } return 1; }
static dbus_bool_t pcmk_dbus_watch_add(DBusWatch *watch, void *data){ int fd = dbus_watch_get_unix_fd(watch); mainloop_io_t *client = mainloop_add_fd( "dbus", G_PRIORITY_DEFAULT, fd, watch, &pcmk_dbus_cb); crm_trace("Added watch %p with fd=%d to client %p", watch, fd, client); dbus_watch_set_data(watch, client, NULL); return TRUE; }
/** * ProcessWatches() handles a list of dbus watches after poll() has returned * * This function must be called with p_sys->lock unlocked * * @param intf_thread_t *p_intf This interface thread state * @param DBusWatch **p_watches The list of dbus watches to process * @param int i_watches The size of the p_watches array * @param struct pollfd *p_fds The result of a poll() call * @param int i_fds The number of file descriptors processed by poll() */ static void ProcessWatches( intf_thread_t *p_intf, DBusWatch **p_watches, int i_watches, struct pollfd *p_fds, int i_fds ) { /* Process watches */ for( int i = 0; i < i_watches; i++ ) { DBusWatch *p_watch = p_watches[i]; if( !dbus_watch_get_enabled( p_watch ) ) continue; for( int j = 0; j < i_fds; j++ ) { if( p_fds[j].fd != dbus_watch_get_unix_fd( p_watch ) ) continue; int i_flags = 0; int i_revents = p_fds[j].revents; int i_fd = p_fds[j].fd; if( i_revents & POLLIN ) { msg_Dbg( p_intf, "fd %d is ready for reading", i_fd ); i_flags |= DBUS_WATCH_READABLE; } if( i_revents & POLLOUT ) { msg_Dbg( p_intf, "fd %d is ready for writing", i_fd ); i_flags |= DBUS_WATCH_WRITABLE; } if( i_revents & POLLERR ) { msg_Dbg( p_intf, "error when polling fd %d", i_fd ); i_flags |= DBUS_WATCH_ERROR; } if( i_revents & POLLHUP ) { msg_Dbg( p_intf, "Hangup signal on fd %d", i_fd ); i_flags |= DBUS_WATCH_HANGUP; } if( i_flags ) { msg_Dbg( p_intf, "Handling dbus watch on fd %d", i_fd ); dbus_watch_handle( p_watch, i_flags ); } else msg_Dbg( p_intf, "Nothing happened on fd %d", i_fd ); } } }
int dbus_update(struct dbus* dbus) { DBusDispatchStatus status; // handle watches Word_t watch_count = 0; JLC(watch_count, dbus->watches, 0, -1); struct pollfd* pollfds = (struct pollfd*)alloca(sizeof(struct pollfd) * watch_count); int fdcount = get_pollfds(dbus, pollfds); if(poll(pollfds, fdcount, 0) < 0) { return -1; } // process the watches DBusWatch** pwatch; Word_t index = 0; int c = 0; JLF(pwatch, dbus->watches, index); while(pwatch != NULL) { struct pollfd* poll_result = &pollfds[c]; struct DBusWatch* watch = *pwatch; if(dbus_watch_get_enabled(watch)) { assert(poll_result->fd == dbus_watch_get_unix_fd(watch)); int flags = 0; int revents = poll_result->revents; if((revents & POLLIN) != 0) flags |= DBUS_WATCH_READABLE; if((revents & POLLOUT) != 0) flags |= DBUS_WATCH_WRITABLE; if((revents & POLLERR) != 0) flags |= DBUS_WATCH_ERROR; if((revents & POLLHUP) != 0) flags |= DBUS_WATCH_HANGUP; if(flags != 0) dbus_watch_handle(watch, flags); c++; } JLN(pwatch, dbus->watches, index); } // dispatch incoming messages while((status = dbus_connection_get_dispatch_status(dbus->conn)) != DBUS_DISPATCH_COMPLETE) { dbus_connection_dispatch(dbus->conn); } // Send outgoing messages if(dbus_connection_has_messages_to_send(dbus->conn)) { dbus_connection_flush(dbus->conn); } return 0; }
void DBusWatcher::StartWatching() { MOZ_ASSERT(!NS_IsMainThread()); MOZ_ASSERT(mWatch); int fd = dbus_watch_get_unix_fd(mWatch); MessageLoopForIO* ioLoop = MessageLoopForIO::current(); ioLoop->WatchFileDescriptor(fd, true, MessageLoopForIO::WATCH_READ, &mReadWatcher, this); ioLoop->WatchFileDescriptor(fd, true, MessageLoopForIO::WATCH_WRITE, &mWriteWatcher, this); }
static dbus_bool_t watch_add(DBusWatch *watch, void *data) { struct watch *w; lem_debug("watch = %p, fd = %d, flags = %s, enabled = %s", (void *)watch, dbus_watch_get_unix_fd(watch), dbus_watch_get_flags(watch) & DBUS_WATCH_READABLE ? "READ" : "WRITE", dbus_watch_get_enabled(watch) ? "true" : "false"); w = lem_xmalloc(sizeof(struct watch)); ev_io_init(&w->ev, watch_handler, dbus_watch_get_unix_fd(watch), flags_to_revents(dbus_watch_get_flags(watch))); w->conn = data; w->watch = watch; dbus_watch_set_data(watch, w, NULL); if (dbus_watch_get_enabled(watch)) ev_io_start(EV_G_ &w->ev); return TRUE; }
/* Callback: "libdbus needs a new watch to be monitored by the main loop" */ static dbus_bool_t add_watch(DBusWatch *watch, void* data) { log_debug("%s(watch:%p, data)", __func__, watch); watch_app_info_t* app_info = (watch_app_info_t*)xzalloc(sizeof(*app_info)); dbus_watch_set_data(watch, app_info, free); int fd = dbus_watch_get_unix_fd(watch); log_debug(" dbus_watch_get_unix_fd():%d", fd); app_info->channel = g_io_channel_unix_new(fd); /* _unconditionally_ adding it to event loop would be an error */ toggled_watch(watch, data); return TRUE; }
/** * Callback for adding D-Bus watch. */ static dbus_bool_t cdbus_callback_add_watch(DBusWatch *watch, void *data) { // Leave disabled watches alone if (!dbus_watch_get_enabled(watch)) return TRUE; session_t *ps = data; // Insert the file descriptor fds_insert(ps, dbus_watch_get_unix_fd(watch), cdbus_get_watch_cond(watch)); // Always return true return TRUE; }
static void remove_watch( DBusWatch *p_watch, void *p_data ) { intf_thread_t *p_intf = (intf_thread_t*) p_data; intf_sys_t *p_sys = (intf_sys_t*) p_intf->p_sys; msg_Dbg( p_intf, "Removing dbus watch on fd %d", dbus_watch_get_unix_fd( p_watch ) ); vlc_mutex_lock( &p_sys->lock ); vlc_array_remove( p_sys->p_watches, vlc_array_index_of_item( p_sys->p_watches, p_watch ) ); vlc_mutex_unlock( &p_sys->lock ); }
/* DBusAddWatchFunction callback for pa mainloop */ static dbus_bool_t add_watch(DBusWatch *watch, void *data) { pa_dbus_wrap_connection *c = data; pa_io_event *ev; pa_assert(watch); pa_assert(c); ev = c->mainloop->io_new( c->mainloop, dbus_watch_get_unix_fd(watch), get_watch_flags(watch), handle_io_event, watch); dbus_watch_set_data(watch, ev, NULL); return TRUE; }
static void remove_watch(DBusWatch *watch, void *data) { unsigned int flags; int fd; flags = dbus_watch_get_flags(watch); fd = dbus_watch_get_unix_fd(watch); eloop_unregister_sock(fd, EVENT_TYPE_EXCEPTION); if (flags & DBUS_WATCH_READABLE) eloop_unregister_sock(fd, EVENT_TYPE_READ); if (flags & DBUS_WATCH_WRITABLE) eloop_unregister_sock(fd, EVENT_TYPE_WRITE); dbus_watch_set_data(watch, NULL, NULL); }