r = node_vtable_get_userdata(bus, path, p->parent, &u);
if (r <= 0)
return r;
+ if (bus->nodes_modified)
+ return 0;
*userdata = vtable_property_convert_userdata(p->vtable, u);
return 1;
LIST_FOREACH(enumerators, c, first) {
char **children = NULL, **k;
+ if (bus->nodes_modified)
+ return 0;
+
r = c->callback(bus, prefix, &children, c->userdata);
if (r < 0)
return r;
r = add_enumerated_to_set(bus, prefix, n->enumerators, s);
if (r < 0)
return r;
+ if (bus->nodes_modified)
+ return 0;
LIST_FOREACH(siblings, i, n->child) {
char *t;
r = add_subtree_to_set(bus, prefix, i, s);
if (r < 0)
return r;
+ if (bus->nodes_modified)
+ return 0;
}
return 0;
assert(found_object);
LIST_FOREACH(callbacks, c, first) {
+ if (bus->nodes_modified)
+ return 0;
+
if (require_fallback && !c->is_fallback)
continue;
if (c->last_iteration == bus->iteration_counter)
continue;
+ c->last_iteration = bus->iteration_counter;
+
r = sd_bus_message_rewind(m, true);
if (r < 0)
return r;
r = node_vtable_get_userdata(bus, m->path, c->parent, &u);
if (r <= 0)
return r;
+ if (bus->nodes_modified)
+ return 0;
*found_object = true;
+ if (c->last_iteration == bus->iteration_counter)
+ return 0;
+
+ c->last_iteration = bus->iteration_counter;
+
r = sd_bus_message_rewind(m, true);
if (r < 0)
return r;
r = vtable_property_get_userdata(bus, m->path, c, &u);
if (r <= 0)
return r;
+ if (bus->nodes_modified)
+ return 0;
*found_object = true;
if (r < 0)
return r;
- c->last_iteration = bus->iteration_counter;
-
if (is_get) {
+ /* Note that we do not protect against reexecution
+ * here (using the last_iteration check, see below),
+ * should the node tree have changed and we got called
+ * again. We assume that property Get() calls are
+ * ultimately without side-effects or if they aren't
+ * then at least idempotent. */
+
r = sd_bus_message_open_container(reply, 'v', c->vtable->x.property.signature);
if (r < 0)
return r;
return 1;
}
+ if (bus->nodes_modified)
+ return 0;
+
r = sd_bus_message_close_container(reply);
if (r < 0)
return r;
if (c->vtable->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY)
sd_bus_error_setf(&error, "org.freedesktop.DBus.Error.PropertyReadOnly", "Property '%s' is not writable.", c->member);
else {
+ /* Avoid that we call the set routine more
+ * than once if the processing of this message
+ * got restarted because the node tree
+ * changed. */
+ if (c->last_iteration == bus->iteration_counter)
+ return 0;
+
+ c->last_iteration = bus->iteration_counter;
+
r = sd_bus_message_enter_container(m, 'v', c->vtable->x.property.signature);
if (r < 0)
return r;
return 1;
}
+ if (bus->nodes_modified)
+ return 0;
+
r = sd_bus_message_exit_container(m);
if (r < 0)
return r;
r = invoke_property_get(bus, v, path, c->interface, v->x.property.member, reply, error, vtable_property_convert_userdata(v, userdata));
if (r < 0)
return r;
-
if (sd_bus_error_is_set(error))
return 0;
+ if (bus->nodes_modified)
+ return 0;
r = sd_bus_message_close_container(reply);
if (r < 0)
r = node_vtable_get_userdata(bus, m->path, c, &u);
if (r < 0)
return r;
+ if (bus->nodes_modified)
+ return 0;
if (r == 0)
continue;
continue;
found_interface = true;
- c->last_iteration = bus->iteration_counter;
-
r = vtable_append_all_properties(bus, reply, m->path, c, u, &error);
if (r < 0)
return r;
return 1;
}
+ if (bus->nodes_modified)
+ return 0;
}
if (!found_interface) {
if (node_vtable_get_userdata(bus, path, c, NULL) > 0)
return true;
+ if (bus->nodes_modified)
+ return false;
}
return !require_fallback && (n->enumerators || n->object_manager);
r = get_child_nodes(bus, m->path, n, &s);
if (r < 0)
return r;
+ if (bus->nodes_modified)
+ return 0;
r = introspect_begin(&intro);
if (r < 0)
r = node_vtable_get_userdata(bus, m->path, c, NULL);
if (r < 0)
return r;
+ if (bus->nodes_modified)
+ return 0;
if (r == 0)
continue;
r = bus_node_exists(bus, n, m->path, require_fallback);
if (r < 0)
return r;
-
+ if (bus->nodes_modified)
+ return 0;
if (r == 0)
goto finish;
}
r = vtable_append_all_properties(bus, reply, path, c, userdata, error);
if (r < 0)
return r;
+ if (bus->nodes_modified)
+ return 0;
r = sd_bus_message_close_container(reply);
if (r < 0)
r = node_vtable_get_userdata(bus, path, i, &u);
if (r < 0)
return r;
+ if (bus->nodes_modified)
+ return 0;
if (r == 0)
continue;
return r;
if (sd_bus_error_is_set(error))
return 0;
+ if (bus->nodes_modified)
+ return 0;
}
if (found_something) {
return r;
if (sd_bus_error_is_set(error))
return 0;
+ if (bus->nodes_modified)
+ return 0;
/* Second, add fallback vtables registered for any of the prefixes */
prefix = alloca(strlen(path) + 1);
r = object_manager_serialize_path(bus, reply, prefix, path, true, error);
if (r < 0)
return r;
-
if (sd_bus_error_is_set(error))
return 0;
+ if (bus->nodes_modified)
+ return 0;
}
return 0;
r = get_child_nodes(bus, m->path, n, &s);
if (r < 0)
return r;
+ if (bus->nodes_modified)
+ return 0;
r = sd_bus_message_new_method_return(bus, m, &reply);
if (r < 0)
return 1;
}
+
+ if (bus->nodes_modified)
+ return 0;
}
}
r = node_callbacks_run(bus, m, n->callbacks, require_fallback, found_object);
if (r != 0)
return r;
+ if (bus->nodes_modified)
+ return 0;
if (!m->interface || !m->member)
return 0;
r = method_callbacks_run(bus, m, v, require_fallback, found_object);
if (r != 0)
return r;
+ if (bus->nodes_modified)
+ return 0;
}
/* Then, look for a known property */
return r;
}
+ if (bus->nodes_modified)
+ return 0;
+
if (!*found_object) {
r = bus_node_exists(bus, n, m->path, require_fallback);
if (r < 0)
return r;
-
if (r > 0)
*found_object = true;
}
}
if (parent)
- LIST_PREPEND(struct node, siblings, parent->child, n);
+ LIST_PREPEND(siblings, parent->child, n);
return n;
}
assert(hashmap_remove(b->nodes, n->path) == n);
if (n->parent)
- LIST_REMOVE(struct node, siblings, n->parent->child, n);
+ LIST_REMOVE(siblings, n->parent->child, n);
free(n->path);
bus_node_gc(b, n->parent);
c->userdata = userdata;
c->is_fallback = fallback;
- LIST_PREPEND(struct node_callback, callbacks, n->callbacks, c);
+ LIST_PREPEND(callbacks, n->callbacks, c);
+ bus->nodes_modified = true;
+
return 0;
fail:
if (!c)
return 0;
- LIST_REMOVE(struct node_callback, callbacks, n->callbacks, c);
+ LIST_REMOVE(callbacks, n->callbacks, c);
free(c);
bus_node_gc(bus, n);
+ bus->nodes_modified = true;
return 1;
}
}
}
- LIST_PREPEND(struct node_vtable, vtables, n->vtables, c);
+ LIST_PREPEND(vtables, n->vtables, c);
+ bus->nodes_modified = true;
+
return 0;
fail:
if (!c)
return 0;
- LIST_REMOVE(struct node_vtable, vtables, n->vtables, c);
+ LIST_REMOVE(vtables, n->vtables, c);
free_node_vtable(bus, c);
bus_node_gc(bus, n);
+ bus->nodes_modified = true;
+
return 1;
}
c->callback = callback;
c->userdata = userdata;
- LIST_PREPEND(struct node_enumerator, enumerators, n->enumerators, c);
+ LIST_PREPEND(enumerators, n->enumerators, c);
+
+ bus->nodes_modified = true;
+
return 0;
fail:
if (!c)
return 0;
- LIST_REMOVE(struct node_enumerator, enumerators, n->enumerators, c);
+ LIST_REMOVE(enumerators, n->enumerators, c);
free(c);
bus_node_gc(bus, n);
+ bus->nodes_modified = true;
+
return 1;
}
r = node_vtable_get_userdata(bus, path, c, &u);
if (r <= 0)
return r;
+ if (bus->nodes_modified)
+ return 0;
r = sd_bus_message_new_signal(bus, path, "org.freedesktop.DBus.Properties", "PropertiesChanged", &m);
if (r < 0)
r = invoke_property_get(bus, v->vtable, m->path, interface, *property, m, &error, vtable_property_convert_userdata(v->vtable, u));
if (r < 0)
return r;
-
if (sd_bus_error_is_set(&error))
return bus_error_to_errno(&error);
+ if (bus->nodes_modified)
+ return 0;
r = sd_bus_message_close_container(m);
if (r < 0)
const char *interface,
char **names) {
+ BUS_DONT_DESTROY(bus);
char *prefix;
int r;
if (strv_isempty(names))
return 0;
- r = emit_properties_changed_on_interface(bus, path, path, interface, false, names);
- if (r != 0)
- return r;
+ do {
+ bus->nodes_modified = false;
- prefix = alloca(strlen(path) + 1);
- OBJECT_PATH_FOREACH_PREFIX(prefix, path) {
- r = emit_properties_changed_on_interface(bus, prefix, path, interface, true, names);
+ r = emit_properties_changed_on_interface(bus, path, path, interface, false, names);
if (r != 0)
return r;
- }
+ if (bus->nodes_modified)
+ continue;
+
+ prefix = alloca(strlen(path) + 1);
+ OBJECT_PATH_FOREACH_PREFIX(prefix, path) {
+ r = emit_properties_changed_on_interface(bus, prefix, path, interface, true, names);
+ if (r != 0)
+ return r;
+ if (bus->nodes_modified)
+ break;
+ }
+
+ } while (bus->nodes_modified);
return -ENOENT;
}
return sd_bus_emit_properties_changed_strv(bus, path, interface, names);
}
-int sd_bus_emit_interfaces_added(sd_bus *bus, const char *path, const char *interfaces, ...) {
- return -ENOSYS;
+static int interfaces_added_append_one_prefix(
+ sd_bus *bus,
+ sd_bus_message *m,
+ const char *prefix,
+ const char *path,
+ const char *interface,
+ bool require_fallback) {
+
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ struct node_vtable *c;
+ struct node *n;
+ void *u = NULL;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(prefix);
+ assert(path);
+ assert(interface);
+
+ n = hashmap_get(bus->nodes, prefix);
+ if (!n)
+ return 0;
+
+ LIST_FOREACH(vtables, c, n->vtables) {
+ if (require_fallback && !c->is_fallback)
+ continue;
+
+ if (streq(c->interface, interface))
+ break;
+ }
+
+ if (!c)
+ return 0;
+
+ r = node_vtable_get_userdata(bus, path, c, &u);
+ if (r <= 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+
+ r = sd_bus_message_append_basic(m, 's', interface);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(m, 'a', "{sv}");
+ if (r < 0)
+ return r;
+
+ r = vtable_append_all_properties(bus, m,path, c, u, &error);
+ if (r < 0)
+ return r;
+ if (sd_bus_error_is_set(&error))
+ return bus_error_to_errno(&error);
+ if (bus->nodes_modified)
+ return 0;
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static int interfaces_added_append_one(
+ sd_bus *bus,
+ sd_bus_message *m,
+ const char *path,
+ const char *interface) {
+
+ char *prefix;
+ int r;
+
+ assert(bus);
+ assert(m);
+ assert(path);
+ assert(interface);
+
+ r = interfaces_added_append_one_prefix(bus, m, path, path, interface, false);
+ if (r != 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+
+ prefix = alloca(strlen(path) + 1);
+ OBJECT_PATH_FOREACH_PREFIX(prefix, path) {
+ r = interfaces_added_append_one_prefix(bus, m, prefix, path, interface, true);
+ if (r != 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ }
+
+ return -ENOENT;
+}
+
+int sd_bus_emit_interfaces_added_strv(sd_bus *bus, const char *path, char **interfaces) {
+ BUS_DONT_DESTROY(bus);
+
+ _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+ char **i;
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (strv_isempty(interfaces))
+ return 0;
+
+ do {
+ bus->nodes_modified = false;
+
+ if (m)
+ m = sd_bus_message_unref(m);
+
+ r = sd_bus_message_new_signal(bus, path, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded", &m);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append_basic(m, 'o', path);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(m, 'a', "{sa{sv}}");
+ if (r < 0)
+ return r;
+
+ STRV_FOREACH(i, interfaces) {
+ assert_return(interface_name_is_valid(*i), -EINVAL);
+
+ r = sd_bus_message_open_container(m, 'e', "sa{sv}");
+ if (r < 0)
+ return r;
+
+ r = interfaces_added_append_one(bus, m, path, *i);
+ if (r < 0)
+ return r;
+
+ if (bus->nodes_modified)
+ break;
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+ }
+
+ if (bus->nodes_modified)
+ continue;
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+
+ } while (bus->nodes_modified);
+
+ return sd_bus_send(bus, m, NULL);
+}
+
+int sd_bus_emit_interfaces_added(sd_bus *bus, const char *path, const char *interface, ...) {
+ _cleanup_strv_free_ char **interfaces = NULL;
+ va_list ap;
+
+ assert_return(bus, -EINVAL);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ va_start(ap, interface);
+ interfaces = strv_new_ap(interface, ap);
+ va_end(ap);
+
+ if (!interfaces)
+ return -ENOMEM;
+
+ return sd_bus_emit_interfaces_added_strv(bus, path, interfaces);
+}
+
+int sd_bus_emit_interfaces_removed_strv(sd_bus *bus, const char *path, char **interfaces) {
+ _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+ int r;
+
+ assert_return(bus, -EINVAL);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ if (strv_isempty(interfaces))
+ return 0;
+
+ r = sd_bus_message_new_signal(bus, path, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved", &m);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append_basic(m, 'o', path);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append_strv(m, interfaces);
+ if (r < 0)
+ return r;
+
+ return sd_bus_send(bus, m, NULL);
}
-int sd_bus_emit_interfaces_removed(sd_bus *bus, const char *path, const char *interfaces, ...) {
- return -ENOSYS;
+int sd_bus_emit_interfaces_removed(sd_bus *bus, const char *path, const char *interface, ...) {
+ _cleanup_strv_free_ char **interfaces = NULL;
+ va_list ap;
+
+ assert_return(bus, -EINVAL);
+ assert_return(object_path_is_valid(path), -EINVAL);
+ assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN);
+ assert_return(!bus_pid_changed(bus), -ECHILD);
+
+ va_start(ap, interface);
+ interfaces = strv_new_ap(interface, ap);
+ va_end(ap);
+
+ if (!interfaces)
+ return -ENOMEM;
+
+ return sd_bus_emit_interfaces_removed_strv(bus, path, interfaces);
}
int sd_bus_add_object_manager(sd_bus *bus, const char *path) {
return -ENOMEM;
n->object_manager = true;
+ bus->nodes_modified = true;
return 0;
}
return 0;
n->object_manager = false;
+ bus->nodes_modified = true;
bus_node_gc(bus, n);
return 1;
~ianmdlvl / elogind.git / blobdiff