| /* |
| * Copyright © 2008 Kristian Høgsberg |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sublicense, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial |
| * portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #define _GNU_SOURCE |
| |
| #include <stdbool.h> |
| #include <stdlib.h> |
| #include <stdint.h> |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <stdarg.h> |
| #include <errno.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <sys/socket.h> |
| #include <sys/un.h> |
| #include <dlfcn.h> |
| #include <assert.h> |
| #include <sys/time.h> |
| #include <fcntl.h> |
| #include <sys/eventfd.h> |
| #include <sys/file.h> |
| #include <sys/stat.h> |
| |
| #include "wayland-util.h" |
| #include "wayland-private.h" |
| #include "wayland-server-private.h" |
| #include "wayland-server.h" |
| #include "wayland-os.h" |
| |
| /* This is the size of the char array in struct sock_addr_un. |
| * No Wayland socket can be created with a path longer than this, |
| * including the null terminator. |
| */ |
| #ifndef UNIX_PATH_MAX |
| #define UNIX_PATH_MAX 108 |
| #endif |
| |
| #define LOCK_SUFFIX ".lock" |
| #define LOCK_SUFFIXLEN 5 |
| |
| struct wl_socket { |
| int fd; |
| int fd_lock; |
| struct sockaddr_un addr; |
| char lock_addr[UNIX_PATH_MAX + LOCK_SUFFIXLEN]; |
| struct wl_list link; |
| struct wl_event_source *source; |
| char *display_name; |
| }; |
| |
| struct wl_client { |
| struct wl_connection *connection; |
| struct wl_event_source *source; |
| struct wl_display *display; |
| struct wl_resource *display_resource; |
| struct wl_list link; |
| struct wl_map objects; |
| struct wl_priv_signal destroy_signal; |
| struct wl_priv_signal destroy_late_signal; |
| pid_t pid; |
| uid_t uid; |
| gid_t gid; |
| int error; |
| struct wl_priv_signal resource_created_signal; |
| }; |
| |
| struct wl_display { |
| struct wl_event_loop *loop; |
| int run; |
| |
| uint32_t next_global_name; |
| uint32_t serial; |
| |
| struct wl_list registry_resource_list; |
| struct wl_list global_list; |
| struct wl_list socket_list; |
| struct wl_list client_list; |
| struct wl_list protocol_loggers; |
| |
| struct wl_priv_signal destroy_signal; |
| struct wl_priv_signal create_client_signal; |
| |
| struct wl_array additional_shm_formats; |
| |
| wl_display_global_filter_func_t global_filter; |
| void *global_filter_data; |
| |
| int terminate_efd; |
| struct wl_event_source *term_source; |
| }; |
| |
| struct wl_global { |
| struct wl_display *display; |
| const struct wl_interface *interface; |
| uint32_t name; |
| uint32_t version; |
| void *data; |
| wl_global_bind_func_t bind; |
| struct wl_list link; |
| bool removed; |
| }; |
| |
| struct wl_resource { |
| struct wl_object object; |
| wl_resource_destroy_func_t destroy; |
| struct wl_list link; |
| /* Unfortunately some users of libwayland (e.g. mesa) still use the |
| * deprecated wl_resource struct, even if creating it with the new |
| * wl_resource_create(). So we cannot change the layout of the struct |
| * unless after the data field. */ |
| struct wl_signal deprecated_destroy_signal; |
| struct wl_client *client; |
| void *data; |
| int version; |
| wl_dispatcher_func_t dispatcher; |
| struct wl_priv_signal destroy_signal; |
| }; |
| |
| struct wl_protocol_logger { |
| struct wl_list link; |
| wl_protocol_logger_func_t func; |
| void *user_data; |
| }; |
| |
| static int debug_server = 0; |
| |
| static void |
| log_closure(struct wl_resource *resource, |
| struct wl_closure *closure, int send) |
| { |
| struct wl_object *object = &resource->object; |
| struct wl_display *display = resource->client->display; |
| struct wl_protocol_logger *protocol_logger; |
| struct wl_protocol_logger_message message; |
| |
| if (debug_server) |
| wl_closure_print(closure, object, send, NULL); |
| |
| if (!wl_list_empty(&display->protocol_loggers)) { |
| message.resource = resource; |
| message.message_opcode = closure->opcode; |
| message.message = closure->message; |
| message.arguments_count = closure->count; |
| message.arguments = closure->args; |
| wl_list_for_each(protocol_logger, |
| &display->protocol_loggers, link) { |
| protocol_logger->func(protocol_logger->user_data, |
| send ? WL_PROTOCOL_LOGGER_EVENT : |
| WL_PROTOCOL_LOGGER_REQUEST, |
| &message); |
| } |
| } |
| } |
| |
| static bool |
| verify_objects(struct wl_resource *resource, uint32_t opcode, |
| union wl_argument *args) |
| { |
| struct wl_object *object = &resource->object; |
| const char *signature = object->interface->events[opcode].signature; |
| struct argument_details arg; |
| struct wl_resource *res; |
| int count, i; |
| |
| count = arg_count_for_signature(signature); |
| for (i = 0; i < count; i++) { |
| signature = get_next_argument(signature, &arg); |
| switch (arg.type) { |
| case 'n': |
| case 'o': |
| res = (struct wl_resource *) (args[i].o); |
| if (res && res->client != resource->client) { |
| wl_log("compositor bug: The compositor " |
| "tried to use an object from one " |
| "client in a '%s.%s' for a different " |
| "client.\n", object->interface->name, |
| object->interface->events[opcode].name); |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| static void |
| handle_array(struct wl_resource *resource, uint32_t opcode, |
| union wl_argument *args, |
| int (*send_func)(struct wl_closure *, struct wl_connection *)) |
| { |
| struct wl_closure *closure; |
| struct wl_object *object = &resource->object; |
| |
| if (resource->client->error) |
| return; |
| |
| if (!verify_objects(resource, opcode, args)) { |
| resource->client->error = 1; |
| return; |
| } |
| |
| closure = wl_closure_marshal(object, opcode, args, |
| &object->interface->events[opcode]); |
| |
| if (closure == NULL) { |
| resource->client->error = 1; |
| return; |
| } |
| |
| log_closure(resource, closure, true); |
| |
| if (send_func(closure, resource->client->connection)) |
| resource->client->error = 1; |
| |
| wl_closure_destroy(closure); |
| } |
| |
| WL_EXPORT void |
| wl_resource_post_event_array(struct wl_resource *resource, uint32_t opcode, |
| union wl_argument *args) |
| { |
| handle_array(resource, opcode, args, wl_closure_send); |
| } |
| |
| WL_EXPORT void |
| wl_resource_post_event(struct wl_resource *resource, uint32_t opcode, ...) |
| { |
| union wl_argument args[WL_CLOSURE_MAX_ARGS]; |
| struct wl_object *object = &resource->object; |
| va_list ap; |
| |
| va_start(ap, opcode); |
| wl_argument_from_va_list(object->interface->events[opcode].signature, |
| args, WL_CLOSURE_MAX_ARGS, ap); |
| va_end(ap); |
| |
| wl_resource_post_event_array(resource, opcode, args); |
| } |
| |
| |
| WL_EXPORT void |
| wl_resource_queue_event_array(struct wl_resource *resource, uint32_t opcode, |
| union wl_argument *args) |
| { |
| handle_array(resource, opcode, args, wl_closure_queue); |
| } |
| |
| WL_EXPORT void |
| wl_resource_queue_event(struct wl_resource *resource, uint32_t opcode, ...) |
| { |
| union wl_argument args[WL_CLOSURE_MAX_ARGS]; |
| struct wl_object *object = &resource->object; |
| va_list ap; |
| |
| va_start(ap, opcode); |
| wl_argument_from_va_list(object->interface->events[opcode].signature, |
| args, WL_CLOSURE_MAX_ARGS, ap); |
| va_end(ap); |
| |
| wl_resource_queue_event_array(resource, opcode, args); |
| } |
| |
| static void |
| wl_resource_post_error_vargs(struct wl_resource *resource, |
| uint32_t code, const char *msg, va_list argp) |
| { |
| struct wl_client *client = resource->client; |
| char buffer[128]; |
| |
| vsnprintf(buffer, sizeof buffer, msg, argp); |
| |
| /* |
| * When a client aborts, its resources are destroyed in id order, |
| * which means the display resource is destroyed first. If destruction |
| * of any later resources results in a protocol error, we end up here |
| * with a NULL display_resource. Do not try to send errors to an |
| * already dead client. |
| */ |
| if (client->error || !client->display_resource) |
| return; |
| |
| wl_resource_post_event(client->display_resource, |
| WL_DISPLAY_ERROR, resource, code, buffer); |
| client->error = 1; |
| |
| } |
| |
| WL_EXPORT void |
| wl_resource_post_error(struct wl_resource *resource, |
| uint32_t code, const char *msg, ...) |
| { |
| va_list ap; |
| |
| va_start(ap, msg); |
| wl_resource_post_error_vargs(resource, code, msg, ap); |
| va_end(ap); |
| } |
| |
| static void |
| destroy_client_with_error(struct wl_client *client, const char *reason) |
| { |
| wl_log("%s (pid %u)\n", reason, client->pid); |
| wl_client_destroy(client); |
| } |
| |
| static int |
| wl_client_connection_data(int fd, uint32_t mask, void *data) |
| { |
| struct wl_client *client = data; |
| struct wl_connection *connection = client->connection; |
| struct wl_resource *resource; |
| struct wl_object *object; |
| struct wl_closure *closure; |
| const struct wl_message *message; |
| uint32_t p[2]; |
| uint32_t resource_flags; |
| int opcode, size, since; |
| int len; |
| |
| if (mask & WL_EVENT_HANGUP) { |
| wl_client_destroy(client); |
| return 1; |
| } |
| |
| if (mask & WL_EVENT_ERROR) { |
| destroy_client_with_error(client, "socket error"); |
| return 1; |
| } |
| |
| if (mask & WL_EVENT_WRITABLE) { |
| len = wl_connection_flush(connection); |
| if (len < 0 && errno != EAGAIN) { |
| destroy_client_with_error( |
| client, "failed to flush client connection"); |
| return 1; |
| } else if (len >= 0) { |
| wl_event_source_fd_update(client->source, |
| WL_EVENT_READABLE); |
| } |
| } |
| |
| len = 0; |
| if (mask & WL_EVENT_READABLE) { |
| len = wl_connection_read(connection); |
| if (len == 0 || (len < 0 && errno != EAGAIN)) { |
| destroy_client_with_error( |
| client, "failed to read client connection"); |
| return 1; |
| } |
| } |
| |
| while (len >= 0 && (size_t) len >= sizeof p) { |
| wl_connection_copy(connection, p, sizeof p); |
| opcode = p[1] & 0xffff; |
| size = p[1] >> 16; |
| if (len < size) |
| break; |
| |
| resource = wl_map_lookup(&client->objects, p[0]); |
| resource_flags = wl_map_lookup_flags(&client->objects, p[0]); |
| if (resource == NULL) { |
| wl_resource_post_error(client->display_resource, |
| WL_DISPLAY_ERROR_INVALID_OBJECT, |
| "invalid object %u", p[0]); |
| break; |
| } |
| |
| object = &resource->object; |
| if (opcode >= object->interface->method_count) { |
| wl_resource_post_error(client->display_resource, |
| WL_DISPLAY_ERROR_INVALID_METHOD, |
| "invalid method %d, object %s@%u", |
| opcode, |
| object->interface->name, |
| object->id); |
| break; |
| } |
| |
| message = &object->interface->methods[opcode]; |
| since = wl_message_get_since(message); |
| if (!(resource_flags & WL_MAP_ENTRY_LEGACY) && |
| resource->version > 0 && resource->version < since) { |
| wl_resource_post_error(client->display_resource, |
| WL_DISPLAY_ERROR_INVALID_METHOD, |
| "invalid method %d (since %d < %d)" |
| ", object %s@%u", |
| opcode, resource->version, since, |
| object->interface->name, |
| object->id); |
| break; |
| } |
| |
| |
| closure = wl_connection_demarshal(client->connection, size, |
| &client->objects, message); |
| |
| if (closure == NULL && errno == ENOMEM) { |
| wl_resource_post_no_memory(resource); |
| break; |
| } else if (closure == NULL || |
| wl_closure_lookup_objects(closure, &client->objects) < 0) { |
| wl_resource_post_error(client->display_resource, |
| WL_DISPLAY_ERROR_INVALID_METHOD, |
| "invalid arguments for %s@%u.%s", |
| object->interface->name, |
| object->id, |
| message->name); |
| wl_closure_destroy(closure); |
| break; |
| } |
| |
| log_closure(resource, closure, false); |
| |
| if ((resource_flags & WL_MAP_ENTRY_LEGACY) || |
| resource->dispatcher == NULL) { |
| wl_closure_invoke(closure, WL_CLOSURE_INVOKE_SERVER, |
| object, opcode, client); |
| } else { |
| wl_closure_dispatch(closure, resource->dispatcher, |
| object, opcode); |
| } |
| |
| wl_closure_destroy(closure); |
| |
| if (client->error) |
| break; |
| |
| len = wl_connection_pending_input(connection); |
| } |
| |
| if (client->error) { |
| destroy_client_with_error(client, |
| "error in client communication"); |
| } |
| |
| return 1; |
| } |
| |
| /** Flush pending events to the client |
| * |
| * \param client The client object |
| * |
| * Events sent to clients are queued in a buffer and written to the |
| * socket later - typically when the compositor has handled all |
| * requests and goes back to block in the event loop. This function |
| * flushes all queued up events for a client immediately. |
| * |
| * \memberof wl_client |
| */ |
| WL_EXPORT void |
| wl_client_flush(struct wl_client *client) |
| { |
| wl_connection_flush(client->connection); |
| } |
| |
| /** Get the display object for the given client |
| * |
| * \param client The client object |
| * \return The display object the client is associated with. |
| * |
| * \memberof wl_client |
| */ |
| WL_EXPORT struct wl_display * |
| wl_client_get_display(struct wl_client *client) |
| { |
| return client->display; |
| } |
| |
| static int |
| bind_display(struct wl_client *client, struct wl_display *display); |
| |
| /** Create a client for the given file descriptor |
| * |
| * \param display The display object |
| * \param fd The file descriptor for the socket to the client |
| * \return The new client object or NULL on failure. |
| * |
| * Given a file descriptor corresponding to one end of a socket, this |
| * function will create a wl_client struct and add the new client to |
| * the compositors client list. At that point, the client is |
| * initialized and ready to run, as if the client had connected to the |
| * servers listening socket. When the client eventually sends |
| * requests to the compositor, the wl_client argument to the request |
| * handler will be the wl_client returned from this function. |
| * |
| * The other end of the socket can be passed to |
| * wl_display_connect_to_fd() on the client side or used with the |
| * WAYLAND_SOCKET environment variable on the client side. |
| * |
| * Listeners added with wl_display_add_client_created_listener() will |
| * be notified by this function after the client is fully constructed. |
| * |
| * On failure this function sets errno accordingly and returns NULL. |
| * |
| * \memberof wl_display |
| */ |
| WL_EXPORT struct wl_client * |
| wl_client_create(struct wl_display *display, int fd) |
| { |
| struct wl_client *client; |
| |
| client = zalloc(sizeof *client); |
| if (client == NULL) |
| return NULL; |
| |
| wl_priv_signal_init(&client->resource_created_signal); |
| client->display = display; |
| client->source = wl_event_loop_add_fd(display->loop, fd, |
| WL_EVENT_READABLE, |
| wl_client_connection_data, client); |
| |
| if (!client->source) |
| goto err_client; |
| |
| if (wl_os_socket_peercred(fd, &client->uid, &client->gid, |
| &client->pid) != 0) |
| goto err_source; |
| |
| client->connection = wl_connection_create(fd); |
| if (client->connection == NULL) |
| goto err_source; |
| |
| wl_map_init(&client->objects, WL_MAP_SERVER_SIDE); |
| |
| if (wl_map_insert_at(&client->objects, 0, 0, NULL) < 0) |
| goto err_map; |
| |
| wl_priv_signal_init(&client->destroy_signal); |
| wl_priv_signal_init(&client->destroy_late_signal); |
| if (bind_display(client, display) < 0) |
| goto err_map; |
| |
| wl_list_insert(display->client_list.prev, &client->link); |
| |
| wl_priv_signal_emit(&display->create_client_signal, client); |
| |
| return client; |
| |
| err_map: |
| wl_map_release(&client->objects); |
| wl_connection_destroy(client->connection); |
| err_source: |
| wl_event_source_remove(client->source); |
| err_client: |
| free(client); |
| return NULL; |
| } |
| |
| /** Return Unix credentials for the client |
| * |
| * \param client The display object |
| * \param pid Returns the process ID |
| * \param uid Returns the user ID |
| * \param gid Returns the group ID |
| * |
| * This function returns the process ID, the user ID and the group ID |
| * for the given client. The credentials come from getsockopt() with |
| * SO_PEERCRED, on the client socket fd. All the pointers can be |
| * NULL, if the caller is not interested in a particular ID. |
| * |
| * Note, process IDs are subject to race conditions and are not a reliable way |
| * to identify a client. |
| * |
| * Be aware that for clients that a compositor forks and execs and |
| * then connects using socketpair(), this function will return the |
| * credentials for the compositor. The credentials for the socketpair |
| * are set at creation time in the compositor. |
| * |
| * \memberof wl_client |
| */ |
| WL_EXPORT void |
| wl_client_get_credentials(struct wl_client *client, |
| pid_t *pid, uid_t *uid, gid_t *gid) |
| { |
| if (pid) |
| *pid = client->pid; |
| if (uid) |
| *uid = client->uid; |
| if (gid) |
| *gid = client->gid; |
| } |
| |
| /** Get the file descriptor for the client |
| * |
| * \param client The display object |
| * \return The file descriptor to use for the connection |
| * |
| * This function returns the file descriptor for the given client. |
| * |
| * Be sure to use the file descriptor from the client for inspection only. |
| * If the caller does anything to the file descriptor that changes its state, |
| * it will likely cause problems. |
| * |
| * See also wl_client_get_credentials(). |
| * It is recommended that you evaluate whether wl_client_get_credentials() |
| * can be applied to your use case instead of this function. |
| * |
| * If you would like to distinguish just between the client and the compositor |
| * itself from the client's request, it can be done by getting the client |
| * credentials and by checking the PID of the client and the compositor's PID. |
| * Regarding the case in which the socketpair() is being used, you need to be |
| * careful. Please note the documentation for wl_client_get_credentials(). |
| * |
| * This function can be used for a compositor to validate a request from |
| * a client if there are additional information provided from the client's |
| * file descriptor. For instance, suppose you can get the security contexts |
| * from the client's file descriptor. The compositor can validate the client's |
| * request with the contexts and make a decision whether it permits or deny it. |
| * |
| * \memberof wl_client |
| */ |
| WL_EXPORT int |
| wl_client_get_fd(struct wl_client *client) |
| { |
| return wl_connection_get_fd(client->connection); |
| } |
| |
| /** Look up an object in the client name space |
| * |
| * \param client The client object |
| * \param id The object id |
| * \return The object or NULL if there is not object for the given ID |
| * |
| * This looks up an object in the client object name space by its |
| * object ID. |
| * |
| * \memberof wl_client |
| */ |
| WL_EXPORT struct wl_resource * |
| wl_client_get_object(struct wl_client *client, uint32_t id) |
| { |
| return wl_map_lookup(&client->objects, id); |
| } |
| |
| WL_EXPORT void |
| wl_client_post_no_memory(struct wl_client *client) |
| { |
| wl_resource_post_error(client->display_resource, |
| WL_DISPLAY_ERROR_NO_MEMORY, "no memory"); |
| } |
| |
| /** Report an internal server error |
| * |
| * \param client The client object |
| * \param msg A printf-style format string |
| * \param ... Format string arguments |
| * |
| * Report an unspecified internal implementation error and disconnect |
| * the client. |
| * |
| * \memberof wl_client |
| */ |
| WL_EXPORT void |
| wl_client_post_implementation_error(struct wl_client *client, |
| char const *msg, ...) |
| { |
| va_list ap; |
| |
| va_start(ap, msg); |
| wl_resource_post_error_vargs(client->display_resource, |
| WL_DISPLAY_ERROR_IMPLEMENTATION, |
| msg, ap); |
| va_end(ap); |
| } |
| |
| WL_EXPORT void |
| wl_resource_post_no_memory(struct wl_resource *resource) |
| { |
| wl_resource_post_error(resource->client->display_resource, |
| WL_DISPLAY_ERROR_NO_MEMORY, "no memory"); |
| } |
| |
| /** Detect if a wl_resource uses the deprecated public definition. |
| * |
| * Before Wayland 1.2.0, the definition of struct wl_resource was public. |
| * It was made opaque just before 1.2.0, and later new fields were added. |
| * The new fields cannot be accessed if a program is using the deprecated |
| * definition, as there would not be memory allocated for them. |
| * |
| * The creation pattern for the deprecated definition was wl_resource_init() |
| * followed by wl_client_add_resource(). wl_resource_init() was an inline |
| * function and no longer exists, but binaries might still carry it. |
| * wl_client_add_resource() still exists for ABI compatibility. |
| */ |
| static bool |
| resource_is_deprecated(struct wl_resource *resource) |
| { |
| struct wl_map *map = &resource->client->objects; |
| int id = resource->object.id; |
| |
| /* wl_client_add_resource() marks deprecated resources with the flag. */ |
| if (wl_map_lookup_flags(map, id) & WL_MAP_ENTRY_LEGACY) |
| return true; |
| |
| return false; |
| } |
| |
| static enum wl_iterator_result |
| destroy_resource(void *element, void *data, uint32_t flags) |
| { |
| struct wl_resource *resource = element; |
| |
| wl_signal_emit(&resource->deprecated_destroy_signal, resource); |
| /* Don't emit the new signal for deprecated resources, as that would |
| * access memory outside the bounds of the deprecated struct */ |
| if (!resource_is_deprecated(resource)) |
| wl_priv_signal_final_emit(&resource->destroy_signal, resource); |
| |
| if (resource->destroy) |
| resource->destroy(resource); |
| |
| if (!(flags & WL_MAP_ENTRY_LEGACY)) |
| free(resource); |
| |
| return WL_ITERATOR_CONTINUE; |
| } |
| |
| WL_EXPORT void |
| wl_resource_destroy(struct wl_resource *resource) |
| { |
| struct wl_client *client = resource->client; |
| uint32_t id; |
| uint32_t flags; |
| |
| id = resource->object.id; |
| flags = wl_map_lookup_flags(&client->objects, id); |
| destroy_resource(resource, NULL, flags); |
| |
| if (id < WL_SERVER_ID_START) { |
| if (client->display_resource) { |
| wl_resource_queue_event(client->display_resource, |
| WL_DISPLAY_DELETE_ID, id); |
| } |
| wl_map_insert_at(&client->objects, 0, id, NULL); |
| } else { |
| wl_map_remove(&client->objects, id); |
| } |
| } |
| |
| WL_EXPORT uint32_t |
| wl_resource_get_id(struct wl_resource *resource) |
| { |
| return resource->object.id; |
| } |
| |
| WL_EXPORT struct wl_list * |
| wl_resource_get_link(struct wl_resource *resource) |
| { |
| return &resource->link; |
| } |
| |
| WL_EXPORT struct wl_resource * |
| wl_resource_from_link(struct wl_list *link) |
| { |
| struct wl_resource *resource; |
| |
| return wl_container_of(link, resource, link); |
| } |
| |
| WL_EXPORT struct wl_resource * |
| wl_resource_find_for_client(struct wl_list *list, struct wl_client *client) |
| { |
| struct wl_resource *resource; |
| |
| if (client == NULL) |
| return NULL; |
| |
| wl_list_for_each(resource, list, link) { |
| if (resource->client == client) |
| return resource; |
| } |
| |
| return NULL; |
| } |
| |
| WL_EXPORT struct wl_client * |
| wl_resource_get_client(struct wl_resource *resource) |
| { |
| return resource->client; |
| } |
| |
| WL_EXPORT void |
| wl_resource_set_user_data(struct wl_resource *resource, void *data) |
| { |
| resource->data = data; |
| } |
| |
| WL_EXPORT void * |
| wl_resource_get_user_data(struct wl_resource *resource) |
| { |
| return resource->data; |
| } |
| |
| WL_EXPORT int |
| wl_resource_get_version(struct wl_resource *resource) |
| { |
| return resource->version; |
| } |
| |
| WL_EXPORT void |
| wl_resource_set_destructor(struct wl_resource *resource, |
| wl_resource_destroy_func_t destroy) |
| { |
| resource->destroy = destroy; |
| } |
| |
| WL_EXPORT int |
| wl_resource_instance_of(struct wl_resource *resource, |
| const struct wl_interface *interface, |
| const void *implementation) |
| { |
| return wl_interface_equal(resource->object.interface, interface) && |
| resource->object.implementation == implementation; |
| } |
| |
| WL_EXPORT void |
| wl_resource_add_destroy_listener(struct wl_resource *resource, |
| struct wl_listener * listener) |
| { |
| if (resource_is_deprecated(resource)) |
| wl_signal_add(&resource->deprecated_destroy_signal, listener); |
| else |
| wl_priv_signal_add(&resource->destroy_signal, listener); |
| } |
| |
| WL_EXPORT struct wl_listener * |
| wl_resource_get_destroy_listener(struct wl_resource *resource, |
| wl_notify_func_t notify) |
| { |
| if (resource_is_deprecated(resource)) |
| return wl_signal_get(&resource->deprecated_destroy_signal, notify); |
| return wl_priv_signal_get(&resource->destroy_signal, notify); |
| } |
| |
| /** Retrieve the interface name (class) of a resource object. |
| * |
| * \param resource The resource object |
| * |
| * \memberof wl_resource |
| */ |
| WL_EXPORT const char * |
| wl_resource_get_class(struct wl_resource *resource) |
| { |
| return resource->object.interface->name; |
| } |
| |
| /** Safely converts an object into its corresponding resource |
| * |
| * \param object object to get the resource for |
| * \return A corresponding resource, or NULL on failure |
| * |
| * Safely converts an object into its corresponding resource. |
| * |
| * This is useful for implementing functions that are given a \c wl_argument |
| * array, and that need to do further introspection on the ".o" field, as it |
| * is otherwise an opaque type. |
| * |
| * \memberof wl_resource |
| */ |
| WL_EXPORT struct wl_resource * |
| wl_resource_from_object(struct wl_object *object) |
| { |
| struct wl_resource *resource; |
| if (object == NULL) |
| return NULL; |
| return wl_container_of(object, resource, object); |
| } |
| |
| /** |
| * Add a listener to be called at the beginning of wl_client destruction |
| * |
| * The listener provided will be called when wl_client destroy has begun, |
| * before any of that client's resources have been destroyed. |
| * |
| * There is no requirement to remove the link of the wl_listener when the |
| * signal is emitted. |
| * |
| * \memberof wl_client |
| */ |
| WL_EXPORT void |
| wl_client_add_destroy_listener(struct wl_client *client, |
| struct wl_listener *listener) |
| { |
| wl_priv_signal_add(&client->destroy_signal, listener); |
| } |
| |
| WL_EXPORT struct wl_listener * |
| wl_client_get_destroy_listener(struct wl_client *client, |
| wl_notify_func_t notify) |
| { |
| return wl_priv_signal_get(&client->destroy_signal, notify); |
| } |
| |
| /** |
| * Add a listener to be called at the end of wl_client destruction |
| * |
| * The listener provided will be called when wl_client destroy is nearly |
| * complete, after all of that client's resources have been destroyed. |
| * |
| * There is no requirement to remove the link of the wl_listener when the |
| * signal is emitted. |
| * |
| * \memberof wl_client |
| * \since 1.22.0 |
| */ |
| WL_EXPORT void |
| wl_client_add_destroy_late_listener(struct wl_client *client, |
| struct wl_listener *listener) |
| { |
| wl_priv_signal_add(&client->destroy_late_signal, listener); |
| } |
| |
| WL_EXPORT struct wl_listener * |
| wl_client_get_destroy_late_listener(struct wl_client *client, |
| wl_notify_func_t notify) |
| { |
| return wl_priv_signal_get(&client->destroy_late_signal, notify); |
| } |
| |
| WL_EXPORT void |
| wl_client_destroy(struct wl_client *client) |
| { |
| uint32_t serial = 0; |
| |
| wl_priv_signal_final_emit(&client->destroy_signal, client); |
| |
| wl_client_flush(client); |
| wl_map_for_each(&client->objects, destroy_resource, &serial); |
| wl_map_release(&client->objects); |
| wl_event_source_remove(client->source); |
| close(wl_connection_destroy(client->connection)); |
| |
| wl_priv_signal_final_emit(&client->destroy_late_signal, client); |
| |
| wl_list_remove(&client->link); |
| wl_list_remove(&client->resource_created_signal.listener_list); |
| free(client); |
| } |
| |
| /* Check if a global filter is registered and use it if any. |
| * |
| * If no wl_global filter has been registered, this function will |
| * return true, allowing the wl_global to be visible to the wl_client |
| */ |
| static bool |
| wl_global_is_visible(const struct wl_client *client, |
| const struct wl_global *global) |
| { |
| struct wl_display *display = client->display; |
| |
| return (display->global_filter == NULL || |
| display->global_filter(client, global, display->global_filter_data)); |
| } |
| |
| static void |
| registry_bind(struct wl_client *client, |
| struct wl_resource *resource, uint32_t name, |
| const char *interface, uint32_t version, uint32_t id) |
| { |
| struct wl_global *global; |
| struct wl_display *display = resource->data; |
| |
| wl_list_for_each(global, &display->global_list, link) |
| if (global->name == name) |
| break; |
| |
| if (&global->link == &display->global_list) |
| wl_resource_post_error(resource, |
| WL_DISPLAY_ERROR_INVALID_OBJECT, |
| "invalid global %s (%d)", interface, name); |
| else if (strcmp(global->interface->name, interface) != 0) |
| wl_resource_post_error(resource, |
| WL_DISPLAY_ERROR_INVALID_OBJECT, |
| "invalid interface for global %u: " |
| "have %s, wanted %s", |
| name, interface, global->interface->name); |
| else if (version == 0) |
| wl_resource_post_error(resource, |
| WL_DISPLAY_ERROR_INVALID_OBJECT, |
| "invalid version for global %s (%d): 0 is not a valid version", |
| interface, name); |
| else if (global->version < version) |
| wl_resource_post_error(resource, |
| WL_DISPLAY_ERROR_INVALID_OBJECT, |
| "invalid version for global %s (%d): have %d, wanted %d", |
| interface, name, global->version, version); |
| else if (!wl_global_is_visible(client, global)) |
| wl_resource_post_error(resource, |
| WL_DISPLAY_ERROR_INVALID_OBJECT, |
| "invalid global %s (%d)", interface, name); |
| else |
| global->bind(client, global->data, version, id); |
| } |
| |
| static const struct wl_registry_interface registry_interface = { |
| registry_bind |
| }; |
| |
| static void |
| display_sync(struct wl_client *client, |
| struct wl_resource *resource, uint32_t id) |
| { |
| struct wl_resource *callback; |
| uint32_t serial; |
| |
| callback = wl_resource_create(client, &wl_callback_interface, 1, id); |
| if (callback == NULL) { |
| wl_client_post_no_memory(client); |
| return; |
| } |
| |
| serial = wl_display_get_serial(client->display); |
| wl_callback_send_done(callback, serial); |
| wl_resource_destroy(callback); |
| } |
| |
| static void |
| unbind_resource(struct wl_resource *resource) |
| { |
| wl_list_remove(&resource->link); |
| } |
| |
| static void |
| display_get_registry(struct wl_client *client, |
| struct wl_resource *resource, uint32_t id) |
| { |
| struct wl_display *display = resource->data; |
| struct wl_resource *registry_resource; |
| struct wl_global *global; |
| |
| registry_resource = |
| wl_resource_create(client, &wl_registry_interface, 1, id); |
| if (registry_resource == NULL) { |
| wl_client_post_no_memory(client); |
| return; |
| } |
| |
| wl_resource_set_implementation(registry_resource, |
| ®istry_interface, |
| display, unbind_resource); |
| |
| wl_list_insert(&display->registry_resource_list, |
| ®istry_resource->link); |
| |
| wl_list_for_each(global, &display->global_list, link) |
| if (wl_global_is_visible(client, global) && !global->removed) |
| wl_resource_post_event(registry_resource, |
| WL_REGISTRY_GLOBAL, |
| global->name, |
| global->interface->name, |
| global->version); |
| } |
| |
| static const struct wl_display_interface display_interface = { |
| display_sync, |
| display_get_registry |
| }; |
| |
| static void |
| destroy_client_display_resource(struct wl_resource *resource) |
| { |
| resource->client->display_resource = NULL; |
| } |
| |
| static int |
| bind_display(struct wl_client *client, struct wl_display *display) |
| { |
| client->display_resource = |
| wl_resource_create(client, &wl_display_interface, 1, 1); |
| if (client->display_resource == NULL) { |
| /* DON'T send no-memory error to client - it has no |
| * resource to which it could post the event */ |
| return -1; |
| } |
| |
| wl_resource_set_implementation(client->display_resource, |
| &display_interface, display, |
| destroy_client_display_resource); |
| return 0; |
| } |
| |
| static int |
| handle_display_terminate(int fd, uint32_t mask, void *data) { |
| uint64_t term_event; |
| |
| if (read(fd, &term_event, sizeof(term_event)) < 0 && errno != EAGAIN) |
| return -1; |
| |
| return 0; |
| } |
| |
| /** Create Wayland display object. |
| * |
| * \return The Wayland display object. Null if failed to create |
| * |
| * This creates the wl_display object. |
| * |
| * \memberof wl_display |
| */ |
| WL_EXPORT struct wl_display * |
| wl_display_create(void) |
| { |
| struct wl_display *display; |
| const char *debug; |
| |
| debug = getenv("WAYLAND_DEBUG"); |
| if (debug && (strstr(debug, "server") || strstr(debug, "1"))) |
| debug_server = 1; |
| |
| display = zalloc(sizeof *display); |
| if (display == NULL) |
| return NULL; |
| |
| display->loop = wl_event_loop_create(); |
| if (display->loop == NULL) { |
| free(display); |
| return NULL; |
| } |
| |
| display->terminate_efd = eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK); |
| if (display->terminate_efd < 0) |
| goto err_eventfd; |
| |
| display->term_source = wl_event_loop_add_fd(display->loop, |
| display->terminate_efd, |
| WL_EVENT_READABLE, |
| handle_display_terminate, |
| NULL); |
| |
| if (display->term_source == NULL) |
| goto err_term_source; |
| |
| wl_list_init(&display->global_list); |
| wl_list_init(&display->socket_list); |
| wl_list_init(&display->client_list); |
| wl_list_init(&display->registry_resource_list); |
| wl_list_init(&display->protocol_loggers); |
| |
| wl_priv_signal_init(&display->destroy_signal); |
| wl_priv_signal_init(&display->create_client_signal); |
| |
| display->next_global_name = 1; |
| display->serial = 0; |
| |
| display->global_filter = NULL; |
| display->global_filter_data = NULL; |
| |
| wl_array_init(&display->additional_shm_formats); |
| |
| return display; |
| |
| err_term_source: |
| close(display->terminate_efd); |
| err_eventfd: |
| wl_event_loop_destroy(display->loop); |
| free(display); |
| return NULL; |
| } |
| |
| static void |
| wl_socket_destroy(struct wl_socket *s) |
| { |
| if (s->source) |
| wl_event_source_remove(s->source); |
| if (s->addr.sun_path[0]) |
| unlink(s->addr.sun_path); |
| if (s->fd >= 0) |
| close(s->fd); |
| if (s->lock_addr[0]) |
| unlink(s->lock_addr); |
| if (s->fd_lock >= 0) |
| close(s->fd_lock); |
| |
| free(s); |
| } |
| |
| static struct wl_socket * |
| wl_socket_alloc(void) |
| { |
| struct wl_socket *s; |
| |
| s = zalloc(sizeof *s); |
| if (!s) |
| return NULL; |
| |
| s->fd = -1; |
| s->fd_lock = -1; |
| |
| return s; |
| } |
| |
| /** Destroy Wayland display object. |
| * |
| * \param display The Wayland display object which should be destroyed. |
| * |
| * This function emits the wl_display destroy signal, releases |
| * all the sockets added to this display, free's all the globals associated |
| * with this display, free's memory of additional shared memory formats and |
| * destroy the display object. |
| * |
| * \sa wl_display_add_destroy_listener |
| * |
| * \memberof wl_display |
| */ |
| WL_EXPORT void |
| wl_display_destroy(struct wl_display *display) |
| { |
| struct wl_socket *s, *next; |
| struct wl_global *global, *gnext; |
| |
| wl_priv_signal_final_emit(&display->destroy_signal, display); |
| |
| wl_list_for_each_safe(s, next, &display->socket_list, link) { |
| wl_socket_destroy(s); |
| } |
| |
| close(display->terminate_efd); |
| wl_event_source_remove(display->term_source); |
| |
| wl_event_loop_destroy(display->loop); |
| |
| wl_list_for_each_safe(global, gnext, &display->global_list, link) |
| free(global); |
| |
| wl_array_release(&display->additional_shm_formats); |
| |
| wl_list_remove(&display->protocol_loggers); |
| |
| free(display); |
| } |
| |
| /** Set a filter function for global objects |
| * |
| * \param display The Wayland display object. |
| * \param filter The global filter function. |
| * \param data User data to be associated with the global filter. |
| * |
| * Set a filter for the wl_display to advertise or hide global objects |
| * to clients. |
| * The set filter will be used during wl_global advertisement to |
| * determine whether a global object should be advertised to a |
| * given client, and during wl_global binding to determine whether |
| * a given client should be allowed to bind to a global. |
| * |
| * Clients that try to bind to a global that was filtered out will |
| * have an error raised. |
| * |
| * Setting the filter NULL will result in all globals being |
| * advertised to all clients. The default is no filter. |
| * |
| * The filter should be installed before any client connects and should always |
| * take the same decision given a client and a global. Not doing so will result |
| * in inconsistent filtering and broken wl_registry event sequences. |
| * |
| * \memberof wl_display |
| */ |
| WL_EXPORT void |
| wl_display_set_global_filter(struct wl_display *display, |
| wl_display_global_filter_func_t filter, |
| void *data) |
| { |
| display->global_filter = filter; |
| display->global_filter_data = data; |
| } |
| |
| WL_EXPORT struct wl_global * |
| wl_global_create(struct wl_display *display, |
| const struct wl_interface *interface, int version, |
| void *data, wl_global_bind_func_t bind) |
| { |
| struct wl_global *global; |
| struct wl_resource *resource; |
| |
| if (version < 1) { |
| wl_log("wl_global_create: failing to create interface " |
| "'%s' with version %d because it is less than 1\n", |
| interface->name, version); |
| return NULL; |
| } |
| |
| if (version > interface->version) { |
| wl_log("wl_global_create: implemented version for '%s' " |
| "higher than interface version (%d > %d)\n", |
| interface->name, version, interface->version); |
| return NULL; |
| } |
| |
| if (display->next_global_name >= UINT32_MAX) { |
| wl_log("wl_global_create: ran out of global names\n"); |
| return NULL; |
| } |
| |
| global = zalloc(sizeof *global); |
| if (global == NULL) |
| return NULL; |
| |
| global->display = display; |
| global->name = display->next_global_name++; |
| global->interface = interface; |
| global->version = version; |
| global->data = data; |
| global->bind = bind; |
| global->removed = false; |
| wl_list_insert(display->global_list.prev, &global->link); |
| |
| wl_list_for_each(resource, &display->registry_resource_list, link) |
| if (wl_global_is_visible(resource->client, global)) |
| wl_resource_post_event(resource, |
| WL_REGISTRY_GLOBAL, |
| global->name, |
| global->interface->name, |
| global->version); |
| |
| return global; |
| } |
| |
| /** Remove the global |
| * |
| * \param global The Wayland global. |
| * |
| * Broadcast a global remove event to all clients without destroying the |
| * global. This function can only be called once per global. |
| * |
| * wl_global_destroy() removes the global and immediately destroys it. On |
| * the other end, this function only removes the global, allowing clients |
| * that have not yet received the global remove event to continue to bind to |
| * it. |
| * |
| * This can be used by compositors to mitigate clients being disconnected |
| * because a global has been added and removed too quickly. Compositors can call |
| * wl_global_remove(), then wait an implementation-defined amount of time, then |
| * call wl_global_destroy(). Note that the destruction of a global is still |
| * racy, since clients have no way to acknowledge that they received the remove |
| * event. |
| * |
| * \since 1.17.90 |
| */ |
| WL_EXPORT void |
| wl_global_remove(struct wl_global *global) |
| { |
| struct wl_display *display = global->display; |
| struct wl_resource *resource; |
| |
| if (global->removed) |
| wl_abort("wl_global_remove: called twice on the same " |
| "global '%s@%"PRIu32"'", global->interface->name, |
| global->name); |
| |
| wl_list_for_each(resource, &display->registry_resource_list, link) |
| if (wl_global_is_visible(resource->client, global)) |
| wl_resource_post_event(resource, WL_REGISTRY_GLOBAL_REMOVE, |
| global->name); |
| |
| global->removed = true; |
| } |
| |
| WL_EXPORT void |
| wl_global_destroy(struct wl_global *global) |
| { |
| if (!global->removed) |
| wl_global_remove(global); |
| wl_list_remove(&global->link); |
| free(global); |
| } |
| |
| WL_EXPORT const struct wl_interface * |
| wl_global_get_interface(const struct wl_global *global) |
| { |
| return global->interface; |
| } |
| |
| /** Get the name of the global. |
| * |
| * \param global The global object. |
| * \param client Client for which to look up the global. |
| * \return The name of the global, or 0 if the global is not visible to the |
| * client. |
| * |
| * \memberof wl_global |
| * \since 1.22 |
| */ |
| WL_EXPORT uint32_t |
| wl_global_get_name(const struct wl_global *global, |
| const struct wl_client *client) |
| { |
| return wl_global_is_visible(client, global) ? global->name : 0; |
| } |
| |
| /** Get the version of the given global. |
| * |
| * \param global The global object. |
| * \return The version advertised by the global. |
| * |
| * \memberof wl_global |
| * \since 1.21 |
| */ |
| WL_EXPORT uint32_t |
| wl_global_get_version(const struct wl_global *global) |
| { |
| return global->version; |
| } |
| |
| /** Get the display object for the given global |
| * |
| * \param global The global object |
| * \return The display object the global is associated with. |
| * |
| * \memberof wl_global |
| * \since 1.20 |
| */ |
| WL_EXPORT struct wl_display * |
| wl_global_get_display(const struct wl_global *global) |
| { |
| return global->display; |
| } |
| |
| WL_EXPORT void * |
| wl_global_get_user_data(const struct wl_global *global) |
| { |
| return global->data; |
| } |
| |
| /** Set the global's user data |
| * |
| * \param global The global object |
| * \param data The user data pointer |
| * |
| * \since 1.17.90 |
| */ |
| WL_EXPORT void |
| wl_global_set_user_data(struct wl_global *global, void *data) |
| { |
| global->data = data; |
| } |
| |
| /** Get the current serial number |
| * |
| * \param display The display object |
| * |
| * This function returns the most recent serial number, but does not |
| * increment it. |
| * |
| * \memberof wl_display |
| */ |
| WL_EXPORT uint32_t |
| wl_display_get_serial(struct wl_display *display) |
| { |
| return display->serial; |
| } |
| |
| /** Get the next serial number |
| * |
| * \param display The display object |
| * |
| * This function increments the display serial number and returns the |
| * new value. |
| * |
| * \memberof wl_display |
| */ |
| WL_EXPORT uint32_t |
| wl_display_next_serial(struct wl_display *display) |
| { |
| display->serial++; |
| |
| return display->serial; |
| } |
| |
| WL_EXPORT struct wl_event_loop * |
| wl_display_get_event_loop(struct wl_display *display) |
| { |
| return display->loop; |
| } |
| |
| WL_EXPORT void |
| wl_display_terminate(struct wl_display *display) |
| { |
| int ret; |
| uint64_t terminate = 1; |
| |
| display->run = 0; |
| |
| ret = write(display->terminate_efd, &terminate, sizeof(terminate)); |
| assert (ret >= 0 || errno == EAGAIN); |
| } |
| |
| WL_EXPORT void |
| wl_display_run(struct wl_display *display) |
| { |
| display->run = 1; |
| |
| while (display->run) { |
| wl_display_flush_clients(display); |
| wl_event_loop_dispatch(display->loop, -1); |
| } |
| } |
| |
| WL_EXPORT void |
| wl_display_flush_clients(struct wl_display *display) |
| { |
| struct wl_client *client, *next; |
| int ret; |
| |
| wl_list_for_each_safe(client, next, &display->client_list, link) { |
| ret = wl_connection_flush(client->connection); |
| if (ret < 0 && errno == EAGAIN) { |
| wl_event_source_fd_update(client->source, |
| WL_EVENT_WRITABLE | |
| WL_EVENT_READABLE); |
| } else if (ret < 0) { |
| wl_client_destroy(client); |
| } |
| } |
| } |
| |
| /** Destroy all clients connected to the display |
| * |
| * \param display The display object |
| * |
| * This function should be called right before wl_display_destroy() to ensure |
| * all client resources are closed properly. Destroying a client from within |
| * wl_display_destroy_clients() is safe, but creating one will leak resources |
| * and raise a warning. |
| * |
| * \memberof wl_display |
| */ |
| WL_EXPORT void |
| wl_display_destroy_clients(struct wl_display *display) |
| { |
| struct wl_list tmp_client_list, *pos; |
| struct wl_client *client; |
| |
| /* Move the whole client list to a temporary head because some new clients |
| * might be added to the original head. */ |
| wl_list_init(&tmp_client_list); |
| wl_list_insert_list(&tmp_client_list, &display->client_list); |
| wl_list_init(&display->client_list); |
| |
| /* wl_list_for_each_safe isn't enough here: it fails if the next client is |
| * destroyed by the destroy handler of the current one. */ |
| while (!wl_list_empty(&tmp_client_list)) { |
| pos = tmp_client_list.next; |
| client = wl_container_of(pos, client, link); |
| |
| wl_client_destroy(client); |
| } |
| |
| if (!wl_list_empty(&display->client_list)) { |
| wl_log("wl_display_destroy_clients: cannot destroy all clients because " |
| "new ones were created by destroy callbacks\n"); |
| } |
| } |
| |
| static int |
| socket_data(int fd, uint32_t mask, void *data) |
| { |
| struct wl_display *display = data; |
| struct sockaddr_un name; |
| socklen_t length; |
| int client_fd; |
| |
| length = sizeof name; |
| client_fd = wl_os_accept_cloexec(fd, (struct sockaddr *) &name, |
| &length); |
| if (client_fd < 0) |
| wl_log("failed to accept: %s\n", strerror(errno)); |
| else |
| if (!wl_client_create(display, client_fd)) |
| close(client_fd); |
| |
| return 1; |
| } |
| |
| static int |
| wl_socket_lock(struct wl_socket *socket) |
| { |
| struct stat socket_stat; |
| |
| snprintf(socket->lock_addr, sizeof socket->lock_addr, |
| "%s%s", socket->addr.sun_path, LOCK_SUFFIX); |
| |
| socket->fd_lock = open(socket->lock_addr, O_CREAT | O_CLOEXEC | O_RDWR, |
| (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP)); |
| |
| if (socket->fd_lock < 0) { |
| wl_log("unable to open lockfile %s check permissions\n", |
| socket->lock_addr); |
| goto err; |
| } |
| |
| if (flock(socket->fd_lock, LOCK_EX | LOCK_NB) < 0) { |
| wl_log("unable to lock lockfile %s, maybe another compositor is running\n", |
| socket->lock_addr); |
| goto err_fd; |
| } |
| |
| if (lstat(socket->addr.sun_path, &socket_stat) < 0 ) { |
| if (errno != ENOENT) { |
| wl_log("did not manage to stat file %s\n", |
| socket->addr.sun_path); |
| goto err_fd; |
| } |
| } else if (socket_stat.st_mode & S_IWUSR || |
| socket_stat.st_mode & S_IWGRP) { |
| unlink(socket->addr.sun_path); |
| } |
| |
| return 0; |
| err_fd: |
| close(socket->fd_lock); |
| socket->fd_lock = -1; |
| err: |
| *socket->lock_addr = 0; |
| /* we did not set this value here, but without lock the |
| * socket won't be created anyway. This prevents the |
| * wl_socket_destroy from unlinking already existing socket |
| * created by other compositor */ |
| *socket->addr.sun_path = 0; |
| |
| return -1; |
| } |
| |
| static int |
| wl_socket_init_for_display_name(struct wl_socket *s, const char *name) |
| { |
| int name_size; |
| const char *runtime_dir = ""; |
| const char *separator = ""; |
| |
| if (name[0] != '/') { |
| runtime_dir = getenv("XDG_RUNTIME_DIR"); |
| if (!runtime_dir || runtime_dir[0] != '/') { |
| wl_log("error: XDG_RUNTIME_DIR is invalid or not set in" |
| " the environment\n"); |
| |
| /* to prevent programs reporting |
| * "failed to add socket: Success" */ |
| errno = ENOENT; |
| return -1; |
| } |
| separator = "/"; |
| } |
| |
| s->addr.sun_family = AF_LOCAL; |
| name_size = snprintf(s->addr.sun_path, sizeof s->addr.sun_path, |
| "%s%s%s", runtime_dir, separator, name) + 1; |
| |
| assert(name_size > 0); |
| if (name_size > (int)sizeof s->addr.sun_path) { |
| wl_log("error: socket path \"%s%s%s\" plus null terminator" |
| " exceeds 108 bytes\n", runtime_dir, separator, name); |
| *s->addr.sun_path = 0; |
| /* to prevent programs reporting |
| * "failed to add socket: Success" */ |
| errno = ENAMETOOLONG; |
| return -1; |
| } |
| |
| s->display_name = (s->addr.sun_path + name_size - 1) - strlen(name); |
| |
| return 0; |
| } |
| |
| static int |
| _wl_display_add_socket(struct wl_display *display, struct wl_socket *s) |
| { |
| socklen_t size; |
| |
| s->fd = wl_os_socket_cloexec(PF_LOCAL, SOCK_STREAM, 0); |
| if (s->fd < 0) { |
| return -1; |
| } |
| |
| size = offsetof (struct sockaddr_un, sun_path) + strlen(s->addr.sun_path); |
| if (bind(s->fd, (struct sockaddr *) &s->addr, size) < 0) { |
| wl_log("bind() failed with error: %s\n", strerror(errno)); |
| return -1; |
| } |
| |
| if (listen(s->fd, 128) < 0) { |
| wl_log("listen() failed with error: %s\n", strerror(errno)); |
| return -1; |
| } |
| |
| s->source = wl_event_loop_add_fd(display->loop, s->fd, |
| WL_EVENT_READABLE, |
| socket_data, display); |
| if (s->source == NULL) { |
| return -1; |
| } |
| |
| wl_list_insert(display->socket_list.prev, &s->link); |
| return 0; |
| } |
| |
| WL_EXPORT const char * |
| wl_display_add_socket_auto(struct wl_display *display) |
| { |
| struct wl_socket *s; |
| int displayno = 0; |
| char display_name[20] = ""; |
| |
| /* A reasonable number of maximum default sockets. If |
| * you need more than this, use the explicit add_socket API. */ |
| const int MAX_DISPLAYNO = 32; |
| |
| s = wl_socket_alloc(); |
| if (s == NULL) |
| return NULL; |
| |
| do { |
| snprintf(display_name, sizeof display_name, "wayland-%d", displayno); |
| if (wl_socket_init_for_display_name(s, display_name) < 0) { |
| wl_socket_destroy(s); |
| return NULL; |
| } |
| |
| if (wl_socket_lock(s) < 0) |
| continue; |
| |
| if (_wl_display_add_socket(display, s) < 0) { |
| wl_socket_destroy(s); |
| return NULL; |
| } |
| |
| return s->display_name; |
| } while (displayno++ < MAX_DISPLAYNO); |
| |
| /* Ran out of display names. */ |
| wl_socket_destroy(s); |
| errno = EINVAL; |
| return NULL; |
| } |
| |
| /** Add a socket with an existing fd to Wayland display for the clients to connect. |
| * |
| * \param display Wayland display to which the socket should be added. |
| * \param sock_fd The existing socket file descriptor to be used |
| * \return 0 if success. -1 if failed. |
| * |
| * The existing socket fd must already be created, opened, and locked. |
| * The fd must be properly set to CLOEXEC and bound to a socket file |
| * with both bind() and listen() already called. |
| * |
| * \memberof wl_display |
| */ |
| WL_EXPORT int |
| wl_display_add_socket_fd(struct wl_display *display, int sock_fd) |
| { |
| struct wl_socket *s; |
| struct stat buf; |
| |
| /* Require a valid fd or fail */ |
| if (sock_fd < 0 || fstat(sock_fd, &buf) < 0 || !S_ISSOCK(buf.st_mode)) { |
| return -1; |
| } |
| |
| s = wl_socket_alloc(); |
| if (s == NULL) |
| return -1; |
| |
| s->source = wl_event_loop_add_fd(display->loop, sock_fd, |
| WL_EVENT_READABLE, |
| socket_data, display); |
| if (s->source == NULL) { |
| wl_log("failed to establish event source\n"); |
| wl_socket_destroy(s); |
| return -1; |
| } |
| |
| /* Reuse the existing fd */ |
| s->fd = sock_fd; |
| |
| wl_list_insert(display->socket_list.prev, &s->link); |
| |
| return 0; |
| } |
| |
| /** Add a socket to Wayland display for the clients to connect. |
| * |
| * \param display Wayland display to which the socket should be added. |
| * \param name Name of the Unix socket. |
| * \return 0 if success. -1 if failed. |
| * |
| * This adds a Unix socket to Wayland display which can be used by clients to |
| * connect to Wayland display. |
| * |
| * If NULL is passed as name, then it would look for WAYLAND_DISPLAY env |
| * variable for the socket name. If WAYLAND_DISPLAY is not set, then default |
| * wayland-0 is used. |
| * |
| * If the socket name is a relative path, the Unix socket will be created in |
| * the directory pointed to by environment variable XDG_RUNTIME_DIR. If |
| * XDG_RUNTIME_DIR is invalid or not set, then this function fails and returns -1. |
| * |
| * If the socket name is an absolute path, then it is used as-is for the |
| * the Unix socket. |
| * |
| * The length of the computed socket path must not exceed the maximum length |
| * of a Unix socket path. |
| * The function also fails if the user does not have write permission in the |
| * directory or if the path is already in use. |
| * |
| * \memberof wl_display |
| */ |
| WL_EXPORT int |
| wl_display_add_socket(struct wl_display *display, const char *name) |
| { |
| struct wl_socket *s; |
| |
| s = wl_socket_alloc(); |
| if (s == NULL) |
| return -1; |
| |
| if (name == NULL) |
| name = getenv("WAYLAND_DISPLAY"); |
| if (name == NULL) |
| name = "wayland-0"; |
| |
| if (wl_socket_init_for_display_name(s, name) < 0) { |
| wl_socket_destroy(s); |
| return -1; |
| } |
| |
| if (wl_socket_lock(s) < 0) { |
| wl_socket_destroy(s); |
| return -1; |
| } |
| |
| if (_wl_display_add_socket(display, s) < 0) { |
| wl_socket_destroy(s); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| WL_EXPORT void |
| wl_display_add_destroy_listener(struct wl_display *display, |
| struct wl_listener *listener) |
| { |
| wl_priv_signal_add(&display->destroy_signal, listener); |
| } |
| |
| /** Registers a listener for the client connection signal. |
| * When a new client object is created, \a listener will be notified, carrying |
| * a pointer to the new wl_client object. |
| * |
| * \ref wl_client_create |
| * \ref wl_display |
| * \ref wl_listener |
| * |
| * \param display The display object |
| * \param listener Signal handler object |
| */ |
| WL_EXPORT void |
| wl_display_add_client_created_listener(struct wl_display *display, |
| struct wl_listener *listener) |
| { |
| wl_priv_signal_add(&display->create_client_signal, listener); |
| } |
| |
| WL_EXPORT struct wl_listener * |
| wl_display_get_destroy_listener(struct wl_display *display, |
| wl_notify_func_t notify) |
| { |
| return wl_priv_signal_get(&display->destroy_signal, notify); |
| } |
| |
| WL_EXPORT void |
| wl_resource_set_implementation(struct wl_resource *resource, |
| const void *implementation, |
| void *data, wl_resource_destroy_func_t destroy) |
| { |
| resource->object.implementation = implementation; |
| resource->data = data; |
| resource->destroy = destroy; |
| resource->dispatcher = NULL; |
| } |
| |
| WL_EXPORT void |
| wl_resource_set_dispatcher(struct wl_resource *resource, |
| wl_dispatcher_func_t dispatcher, |
| const void *implementation, |
| void *data, wl_resource_destroy_func_t destroy) |
| { |
| resource->dispatcher = dispatcher; |
| resource->object.implementation = implementation; |
| resource->data = data; |
| resource->destroy = destroy; |
| } |
| |
| /** Create a new resource object |
| * |
| * \param client The client owner of the new resource. |
| * \param interface The interface of the new resource. |
| * \param version The version of the new resource. |
| * \param id The id of the new resource. If 0, an available id will be used. |
| * |
| * Listeners added with \a wl_client_add_resource_created_listener will be |
| * notified at the end of this function. |
| * |
| * \memberof wl_resource |
| */ |
| WL_EXPORT struct wl_resource * |
| wl_resource_create(struct wl_client *client, |
| const struct wl_interface *interface, |
| int version, uint32_t id) |
| { |
| struct wl_resource *resource; |
| |
| resource = zalloc(sizeof *resource); |
| if (resource == NULL) |
| return NULL; |
| |
| if (id == 0) { |
| id = wl_map_insert_new(&client->objects, 0, NULL); |
| if (id == 0) { |
| free(resource); |
| return NULL; |
| } |
| } |
| |
| resource->object.id = id; |
| resource->object.interface = interface; |
| resource->object.implementation = NULL; |
| |
| wl_signal_init(&resource->deprecated_destroy_signal); |
| wl_priv_signal_init(&resource->destroy_signal); |
| |
| resource->destroy = NULL; |
| resource->client = client; |
| resource->data = NULL; |
| resource->version = version; |
| resource->dispatcher = NULL; |
| |
| if (wl_map_insert_at(&client->objects, 0, id, resource) < 0) { |
| if (errno == EINVAL) { |
| wl_resource_post_error(client->display_resource, |
| WL_DISPLAY_ERROR_INVALID_OBJECT, |
| "invalid new id %d", id); |
| } |
| free(resource); |
| return NULL; |
| } |
| |
| wl_priv_signal_emit(&client->resource_created_signal, resource); |
| return resource; |
| } |
| |
| WL_EXPORT void |
| wl_log_set_handler_server(wl_log_func_t handler) |
| { |
| wl_log_handler = handler; |
| } |
| |
| /** Adds a new protocol logger. |
| * |
| * When a new protocol message arrives or is sent from the server |
| * all the protocol logger functions will be called, carrying the |
| * \a user_data pointer, the type of the message (request or |
| * event) and the actual message. |
| * The lifetime of the messages passed to the logger function ends |
| * when they return so the messages cannot be stored and accessed |
| * later. |
| * |
| * \a errno is set on error. |
| * |
| * \param display The display object |
| * \param func The function to call to log a new protocol message |
| * \param user_data The user data pointer to pass to \a func |
| * |
| * \return The protol logger object on success, NULL on failure. |
| * |
| * \sa wl_protocol_logger_destroy |
| * |
| * \memberof wl_display |
| */ |
| WL_EXPORT struct wl_protocol_logger * |
| wl_display_add_protocol_logger(struct wl_display *display, |
| wl_protocol_logger_func_t func, void *user_data) |
| { |
| struct wl_protocol_logger *logger; |
| |
| logger = zalloc(sizeof *logger); |
| if (!logger) |
| return NULL; |
| |
| logger->func = func; |
| logger->user_data = user_data; |
| wl_list_insert(&display->protocol_loggers, &logger->link); |
| |
| return logger; |
| } |
| |
| /** Destroys a protocol logger. |
| * |
| * This function destroys a protocol logger and removes it from the display |
| * it was added to with \a wl_display_add_protocol_logger. |
| * The \a logger object becomes invalid after calling this function. |
| * |
| * \sa wl_display_add_protocol_logger |
| * |
| * \memberof wl_protocol_logger |
| */ |
| WL_EXPORT void |
| wl_protocol_logger_destroy(struct wl_protocol_logger *logger) |
| { |
| wl_list_remove(&logger->link); |
| free(logger); |
| } |
| |
| /** Add support for a wl_shm pixel format |
| * |
| * \param display The display object |
| * \param format The wl_shm pixel format to advertise |
| * \return A pointer to the wl_shm format that was added to the list |
| * or NULL if adding it to the list failed. |
| * |
| * Add the specified wl_shm format to the list of formats the wl_shm |
| * object advertises when a client binds to it. Adding a format to |
| * the list means that clients will know that the compositor supports |
| * this format and may use it for creating wl_shm buffers. The |
| * compositor must be able to handle the pixel format when a client |
| * requests it. |
| * |
| * The compositor by default supports WL_SHM_FORMAT_ARGB8888 and |
| * WL_SHM_FORMAT_XRGB8888. |
| * |
| * \memberof wl_display |
| */ |
| WL_EXPORT uint32_t * |
| wl_display_add_shm_format(struct wl_display *display, uint32_t format) |
| { |
| uint32_t *p = NULL; |
| |
| p = wl_array_add(&display->additional_shm_formats, sizeof *p); |
| |
| if (p != NULL) |
| *p = format; |
| return p; |
| } |
| |
| /** |
| * Get list of additional wl_shm pixel formats |
| * |
| * \param display The display object |
| * |
| * This function returns the list of addition wl_shm pixel formats |
| * that the compositor supports. WL_SHM_FORMAT_ARGB8888 and |
| * WL_SHM_FORMAT_XRGB8888 are always supported and not included in the |
| * array, but all formats added through wl_display_add_shm_format() |
| * will be in the array. |
| * |
| * \sa wl_display_add_shm_format() |
| * |
| * \private |
| * |
| * \memberof wl_display |
| */ |
| struct wl_array * |
| wl_display_get_additional_shm_formats(struct wl_display *display) |
| { |
| return &display->additional_shm_formats; |
| } |
| |
| /** Get the list of currently connected clients |
| * |
| * \param display The display object |
| * |
| * This function returns a pointer to the list of clients currently |
| * connected to the display. You can iterate on the list by using |
| * the \a wl_client_for_each macro. |
| * The returned value is valid for the lifetime of the \a display. |
| * You must not modify the returned list, but only access it. |
| * |
| * \sa wl_client_for_each() |
| * \sa wl_client_get_link() |
| * \sa wl_client_from_link() |
| * |
| * \memberof wl_display |
| */ |
| WL_EXPORT struct wl_list * |
| wl_display_get_client_list(struct wl_display *display) |
| { |
| return &display->client_list; |
| } |
| |
| /** Get the link by which a client is inserted in the client list |
| * |
| * \param client The client object |
| * |
| * \sa wl_client_for_each() |
| * \sa wl_display_get_client_list() |
| * \sa wl_client_from_link() |
| * |
| * \memberof wl_client |
| */ |
| WL_EXPORT struct wl_list * |
| wl_client_get_link(struct wl_client *client) |
| { |
| return &client->link; |
| } |
| |
| /** Get a wl_client by its link |
| * |
| * \param link The link of a wl_client |
| * |
| * \sa wl_client_for_each() |
| * \sa wl_display_get_client_list() |
| * \sa wl_client_get_link() |
| * |
| * \memberof wl_client |
| */ |
| WL_EXPORT struct wl_client * |
| wl_client_from_link(struct wl_list *link) |
| { |
| struct wl_client *client; |
| |
| return wl_container_of(link, client, link); |
| } |
| |
| /** Add a listener for the client's resource creation signal |
| * |
| * \param client The client object |
| * \param listener The listener to be added |
| * |
| * When a new resource is created for this client the listener |
| * will be notified, carrying the new resource as the data argument. |
| * |
| * \memberof wl_client |
| */ |
| WL_EXPORT void |
| wl_client_add_resource_created_listener(struct wl_client *client, |
| struct wl_listener *listener) |
| { |
| wl_priv_signal_add(&client->resource_created_signal, listener); |
| } |
| |
| struct wl_resource_iterator_context { |
| void *user_data; |
| wl_client_for_each_resource_iterator_func_t it; |
| }; |
| |
| static enum wl_iterator_result |
| resource_iterator_helper(void *res, void *user_data, uint32_t flags) |
| { |
| struct wl_resource_iterator_context *context = user_data; |
| struct wl_resource *resource = res; |
| |
| return context->it(resource, context->user_data); |
| } |
| |
| /** Iterate over all the resources of a client |
| * |
| * \param client The client object |
| * \param iterator The iterator function |
| * \param user_data The user data pointer |
| * |
| * The function pointed by \a iterator will be called for each |
| * resource owned by the client. The \a user_data will be passed |
| * as the second argument of the iterator function. |
| * If the \a iterator function returns \a WL_ITERATOR_CONTINUE the iteration |
| * will continue, if it returns \a WL_ITERATOR_STOP it will stop. |
| * |
| * Creating and destroying resources while iterating is safe, but new |
| * resources may or may not be picked up by the iterator. |
| * |
| * \sa wl_iterator_result |
| * |
| * \memberof wl_client |
| */ |
| WL_EXPORT void |
| wl_client_for_each_resource(struct wl_client *client, |
| wl_client_for_each_resource_iterator_func_t iterator, |
| void *user_data) |
| { |
| struct wl_resource_iterator_context context = { |
| .user_data = user_data, |
| .it = iterator, |
| }; |
| |
| wl_map_for_each(&client->objects, resource_iterator_helper, &context); |
| } |
| |
| static void |
| handle_noop(struct wl_listener *listener, void *data) |
| { |
| /* Do nothing */ |
| } |
| |
| /** Emits this signal, notifying all registered listeners. |
| * |
| * A safer version of wl_signal_emit() which can gracefully handle additions |
| * and deletions of any signal listener from within listener notification |
| * callbacks. |
| * |
| * Listeners deleted during a signal emission and which have not already been |
| * notified at the time of deletion are not notified by that emission. |
| * |
| * Listeners added (or readded) during signal emission are ignored by that |
| * emission. |
| * |
| * Note that repurposing a listener without explicitly removing it and readding |
| * it is not supported and can lead to unexpected behavior. |
| * |
| * \param signal The signal object that will emit the signal |
| * \param data The data that will be emitted with the signal |
| * |
| * \memberof wl_signal |
| * \since 1.20.90 |
| */ |
| WL_EXPORT void |
| wl_signal_emit_mutable(struct wl_signal *signal, void *data) |
| { |
| struct wl_listener cursor; |
| struct wl_listener end; |
| |
| /* Add two special markers: one cursor and one end marker. This way, we |
| * know that we've already called listeners on the left of the cursor |
| * and that we don't want to call listeners on the right of the end |
| * marker. The 'it' function can remove any element it wants from the |
| * list without troubles. |
| * |
| * There was a previous attempt that used to steal the whole list of |
| * listeners but then that broke wl_signal_get(). |
| * |
| * wl_list_for_each_safe tries to be safe but it fails: it works fine |
| * if the current item is removed, but not if the next one is. */ |
| wl_list_insert(&signal->listener_list, &cursor.link); |
| cursor.notify = handle_noop; |
| wl_list_insert(signal->listener_list.prev, &end.link); |
| end.notify = handle_noop; |
| |
| while (cursor.link.next != &end.link) { |
| struct wl_list *pos = cursor.link.next; |
| struct wl_listener *l = wl_container_of(pos, l, link); |
| |
| wl_list_remove(&cursor.link); |
| wl_list_insert(pos, &cursor.link); |
| |
| l->notify(l, data); |
| } |
| |
| wl_list_remove(&cursor.link); |
| wl_list_remove(&end.link); |
| } |
| |
| /** \cond INTERNAL */ |
| |
| /** Initialize a wl_priv_signal object |
| * |
| * wl_priv_signal is a safer implementation of a signal type, with the same API |
| * as wl_signal, but kept as a private utility of libwayland-server. |
| * It is safer because listeners can be removed from within wl_priv_signal_emit() |
| * without corrupting the signal's list. |
| * |
| * Before passing a wl_priv_signal object to any other function it must be |
| * initialized by using wl_priv_signal_init(). |
| * |
| * \memberof wl_priv_signal |
| */ |
| void |
| wl_priv_signal_init(struct wl_priv_signal *signal) |
| { |
| wl_list_init(&signal->listener_list); |
| wl_list_init(&signal->emit_list); |
| } |
| |
| /** Add a listener to a signal |
| * |
| * The new listener will be called when calling wl_signal_emit(). If a listener is |
| * added to the signal while wl_signal_emit() is running it will be called from |
| * the next time wl_priv_signal_emit() is called. |
| * To remove a listener call wl_list_remove() on its link member. |
| * |
| * \memberof wl_priv_signal |
| */ |
| void |
| wl_priv_signal_add(struct wl_priv_signal *signal, struct wl_listener *listener) |
| { |
| wl_list_insert(signal->listener_list.prev, &listener->link); |
| } |
| |
| /** Get a listener added to a signal |
| * |
| * Returns the listener added to the given \a signal and with the given |
| * \a notify function, or NULL if there isn't any. |
| * Calling this function from within wl_priv_signal_emit() is safe and will |
| * return the correct value. |
| * |
| * \memberof wl_priv_signal |
| */ |
| struct wl_listener * |
| wl_priv_signal_get(struct wl_priv_signal *signal, wl_notify_func_t notify) |
| { |
| struct wl_listener *l; |
| |
| wl_list_for_each(l, &signal->listener_list, link) |
| if (l->notify == notify) |
| return l; |
| wl_list_for_each(l, &signal->emit_list, link) |
| if (l->notify == notify) |
| return l; |
| |
| return NULL; |
| } |
| |
| /** Emit the signal, calling all the installed listeners |
| * |
| * Iterate over all the listeners added to this \a signal and call |
| * their \a notify function pointer, passing on the given \a data. |
| * Removing or adding a listener from within wl_priv_signal_emit() |
| * is safe. |
| */ |
| void |
| wl_priv_signal_emit(struct wl_priv_signal *signal, void *data) |
| { |
| struct wl_listener *l; |
| struct wl_list *pos; |
| |
| wl_list_insert_list(&signal->emit_list, &signal->listener_list); |
| wl_list_init(&signal->listener_list); |
| |
| /* Take every element out of the list and put them in a temporary list. |
| * This way, the 'it' func can remove any element it wants from the list |
| * without troubles, because we always get the first element, not the |
| * one after the current, which may be invalid. |
| * wl_list_for_each_safe tries to be safe but it fails: it works fine |
| * if the current item is removed, but not if the next one is. */ |
| while (!wl_list_empty(&signal->emit_list)) { |
| pos = signal->emit_list.next; |
| l = wl_container_of(pos, l, link); |
| |
| wl_list_remove(pos); |
| wl_list_insert(&signal->listener_list, pos); |
| |
| l->notify(l, data); |
| } |
| } |
| |
| /** Emit the signal for the last time, calling all the installed listeners |
| * |
| * Iterate over all the listeners added to this \a signal and call |
| * their \a notify function pointer, passing on the given \a data. |
| * Removing or adding a listener from within wl_priv_signal_emit() |
| * is safe, as is freeing the structure containing the listener. |
| * |
| * A large body of external code assumes it's ok to free a destruction |
| * listener without removing that listener from the list. Mixing code |
| * that acts like this and code that doesn't will result in list |
| * corruption. |
| * |
| * We resolve this by removing each item from the list and isolating it |
| * in another list. We discard it completely after firing the notifier. |
| * This should allow interoperability between code that unlinks its |
| * destruction listeners and code that just frees structures they're in. |
| * |
| */ |
| void |
| wl_priv_signal_final_emit(struct wl_priv_signal *signal, void *data) |
| { |
| struct wl_listener *l; |
| struct wl_list *pos; |
| |
| /* During a destructor notifier isolate every list item before |
| * notifying. This renders harmless the long standing misuse |
| * of freeing listeners without removing them, but allows |
| * callers that do choose to remove them to interoperate with |
| * ones that don't. */ |
| while (!wl_list_empty(&signal->listener_list)) { |
| pos = signal->listener_list.next; |
| l = wl_container_of(pos, l, link); |
| |
| wl_list_remove(pos); |
| wl_list_init(pos); |
| |
| l->notify(l, data); |
| } |
| } |
| |
| /** \endcond INTERNAL */ |
| |
| /** \cond */ /* Deprecated functions below. */ |
| |
| uint32_t |
| wl_client_add_resource(struct wl_client *client, |
| struct wl_resource *resource) WL_DEPRECATED; |
| |
| WL_EXPORT uint32_t |
| wl_client_add_resource(struct wl_client *client, |
| struct wl_resource *resource) |
| { |
| if (resource->object.id == 0) { |
| resource->object.id = |
| wl_map_insert_new(&client->objects, |
| WL_MAP_ENTRY_LEGACY, resource); |
| if (resource->object.id == 0) |
| return 0; |
| } else if (wl_map_insert_at(&client->objects, WL_MAP_ENTRY_LEGACY, |
| resource->object.id, resource) < 0) { |
| if (errno == EINVAL) { |
| wl_resource_post_error(client->display_resource, |
| WL_DISPLAY_ERROR_INVALID_OBJECT, |
| "invalid new id %d", |
| resource->object.id); |
| } |
| return 0; |
| } |
| |
| resource->client = client; |
| wl_signal_init(&resource->deprecated_destroy_signal); |
| |
| return resource->object.id; |
| } |
| |
| struct wl_resource * |
| wl_client_add_object(struct wl_client *client, |
| const struct wl_interface *interface, |
| const void *implementation, |
| uint32_t id, void *data) WL_DEPRECATED; |
| |
| WL_EXPORT struct wl_resource * |
| wl_client_add_object(struct wl_client *client, |
| const struct wl_interface *interface, |
| const void *implementation, uint32_t id, void *data) |
| { |
| struct wl_resource *resource; |
| |
| resource = wl_resource_create(client, interface, -1, id); |
| if (resource == NULL) |
| wl_client_post_no_memory(client); |
| else |
| wl_resource_set_implementation(resource, |
| implementation, data, NULL); |
| |
| return resource; |
| } |
| |
| struct wl_resource * |
| wl_client_new_object(struct wl_client *client, |
| const struct wl_interface *interface, |
| const void *implementation, void *data) WL_DEPRECATED; |
| |
| WL_EXPORT struct wl_resource * |
| wl_client_new_object(struct wl_client *client, |
| const struct wl_interface *interface, |
| const void *implementation, void *data) |
| { |
| struct wl_resource *resource; |
| |
| resource = wl_resource_create(client, interface, -1, 0); |
| if (resource == NULL) |
| wl_client_post_no_memory(client); |
| else |
| wl_resource_set_implementation(resource, |
| implementation, data, NULL); |
| |
| return resource; |
| } |
| |
| struct wl_global * |
| wl_display_add_global(struct wl_display *display, |
| const struct wl_interface *interface, |
| void *data, wl_global_bind_func_t bind) WL_DEPRECATED; |
| |
| WL_EXPORT struct wl_global * |
| wl_display_add_global(struct wl_display *display, |
| const struct wl_interface *interface, |
| void *data, wl_global_bind_func_t bind) |
| { |
| return wl_global_create(display, interface, interface->version, data, bind); |
| } |
| |
| void |
| wl_display_remove_global(struct wl_display *display, |
| struct wl_global *global) WL_DEPRECATED; |
| |
| WL_EXPORT void |
| wl_display_remove_global(struct wl_display *display, struct wl_global *global) |
| { |
| wl_global_destroy(global); |
| } |
| |
| /** \endcond */ |
| |
| /* Functions at the end of this file are deprecated. Instead of adding new |
| * code here, add it before the comment above that states: |
| * Deprecated functions below. |
| */ |