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Diffstat (limited to 'src/libsystemd-bus/bus-objects.c')
-rw-r--r--src/libsystemd-bus/bus-objects.c360
1 files changed, 213 insertions, 147 deletions
diff --git a/src/libsystemd-bus/bus-objects.c b/src/libsystemd-bus/bus-objects.c
index 8369068bd0..a6e8b2de86 100644
--- a/src/libsystemd-bus/bus-objects.c
+++ b/src/libsystemd-bus/bus-objects.c
@@ -728,6 +728,7 @@ static int process_introspect(
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_set_free_free_ Set *s = NULL;
+ const char *previous_interface = NULL;
struct introspect intro;
struct node_vtable *c;
bool empty;
@@ -768,11 +769,24 @@ static int process_introspect(
empty = false;
- r = introspect_write_interface(&intro, c->interface, c->vtable);
+ if (!streq_ptr(previous_interface, c->interface)) {
+
+ if (previous_interface)
+ fputs(" </interface>\n", intro.f);
+
+ fprintf(intro.f, " <interface name=\"%s\">\n", c->interface);
+ }
+
+ r = introspect_write_interface(&intro, c->vtable);
if (r < 0)
goto finish;
+
+ previous_interface = c->interface;
}
+ if (previous_interface)
+ fputs(" </interface>\n", intro.f);
+
if (empty) {
/* Nothing?, let's see if we exist at all, and if not
* refuse to do anything */
@@ -806,51 +820,6 @@ finish:
return r;
}
-static int object_manager_serialize_vtable(
- sd_bus *bus,
- sd_bus_message *reply,
- const char *path,
- struct node_vtable *c,
- sd_bus_error *error,
- void *userdata) {
-
- int r;
-
- assert(bus);
- assert(reply);
- assert(path);
- assert(c);
- assert(error);
-
- r = sd_bus_message_open_container(reply, 'e', "sa{sv}");
- if (r < 0)
- return r;
-
- r = sd_bus_message_append(reply, "s", c->interface);
- if (r < 0)
- return r;
-
- r = sd_bus_message_open_container(reply, 'a', "{sv}");
- if (r < 0)
- return r;
-
- 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)
- return r;
-
- r = sd_bus_message_close_container(reply);
- if (r < 0)
- return r;
-
- return 0;
-}
-
static int object_manager_serialize_path(
sd_bus *bus,
sd_bus_message *reply,
@@ -859,9 +828,10 @@ static int object_manager_serialize_path(
bool require_fallback,
sd_bus_error *error) {
+ const char *previous_interface = NULL;
+ bool found_something = false;
struct node_vtable *i;
struct node *n;
- bool found_something = false;
int r;
assert(bus);
@@ -889,6 +859,9 @@ static int object_manager_serialize_path(
continue;
if (!found_something) {
+
+ /* Open the object part */
+
r = sd_bus_message_open_container(reply, 'e', "oa{sa{sv}}");
if (r < 0)
return r;
@@ -904,13 +877,54 @@ static int object_manager_serialize_path(
found_something = true;
}
- r = object_manager_serialize_vtable(bus, reply, path, i, error, u);
+ if (!streq_ptr(previous_interface, i->interface)) {
+
+ /* Maybe close the previous interface part */
+
+ if (previous_interface) {
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+ }
+
+ /* Open the new interface part */
+
+ r = sd_bus_message_open_container(reply, 'e', "sa{sv}");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(reply, "s", i->interface);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(reply, 'a', "{sv}");
+ if (r < 0)
+ return r;
+ }
+
+ r = vtable_append_all_properties(bus, reply, path, i, u, error);
if (r < 0)
return r;
if (sd_bus_error_is_set(error))
return 0;
if (bus->nodes_modified)
return 0;
+
+ previous_interface = i->interface;
+ }
+
+ if (previous_interface) {
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
}
if (found_something) {
@@ -1503,7 +1517,7 @@ static int add_object_vtable_internal(
sd_bus_object_find_t find,
void *userdata) {
- struct node_vtable *c = NULL, *i;
+ struct node_vtable *c = NULL, *i, *existing = NULL;
const sd_bus_vtable *v;
struct node *n;
int r;
@@ -1515,6 +1529,10 @@ static int add_object_vtable_internal(
assert_return(vtable[0].type == _SD_BUS_VTABLE_START, -EINVAL);
assert_return(vtable[0].x.start.element_size == sizeof(struct sd_bus_vtable), -EINVAL);
assert_return(!bus_pid_changed(bus), -ECHILD);
+ assert_return(!streq(interface, "org.freedesktop.DBus.Properties") &&
+ !streq(interface, "org.freedesktop.DBus.Introspectable") &&
+ !streq(interface, "org.freedesktop.DBus.Peer") &&
+ !streq(interface, "org.freedesktop.DBus.ObjectManager"), -EINVAL);
r = hashmap_ensure_allocated(&bus->vtable_methods, vtable_member_hash_func, vtable_member_compare_func);
if (r < 0)
@@ -1529,15 +1547,20 @@ static int add_object_vtable_internal(
return -ENOMEM;
LIST_FOREACH(vtables, i, n->vtables) {
- if (streq(i->interface, interface)) {
- r = -EEXIST;
- goto fail;
- }
-
if (i->is_fallback != fallback) {
r = -EPROTOTYPE;
goto fail;
}
+
+ if (streq(i->interface, interface)) {
+
+ if (i->vtable == vtable) {
+ r = -EEXIST;
+ goto fail;
+ }
+
+ existing = i;
+ }
}
c = new0(struct node_vtable, 1);
@@ -1654,7 +1677,7 @@ static int add_object_vtable_internal(
}
}
- LIST_PREPEND(vtables, n->vtables, c);
+ LIST_INSERT_AFTER(vtables, n->vtables, existing, c);
bus->nodes_modified = true;
return 0;
@@ -1671,7 +1694,10 @@ static int remove_object_vtable_internal(
sd_bus *bus,
const char *path,
const char *interface,
- bool fallback) {
+ const sd_bus_vtable *vtable,
+ bool fallback,
+ sd_bus_object_find_t find,
+ void *userdata) {
struct node_vtable *c;
struct node *n;
@@ -1686,7 +1712,11 @@ static int remove_object_vtable_internal(
return 0;
LIST_FOREACH(vtables, c, n->vtables)
- if (streq(c->interface, interface) && c->is_fallback == fallback)
+ if (streq(c->interface, interface) &&
+ c->is_fallback == fallback &&
+ c->vtable == vtable &&
+ c->find == find &&
+ c->userdata == userdata)
break;
if (!c)
@@ -1715,9 +1745,11 @@ _public_ int sd_bus_add_object_vtable(
_public_ int sd_bus_remove_object_vtable(
sd_bus *bus,
const char *path,
- const char *interface) {
+ const char *interface,
+ const sd_bus_vtable *vtable,
+ void *userdata) {
- return remove_object_vtable_internal(bus, path, interface, false);
+ return remove_object_vtable_internal(bus, path, interface, vtable, false, NULL, userdata);
}
_public_ int sd_bus_add_fallback_vtable(
@@ -1734,9 +1766,12 @@ _public_ int sd_bus_add_fallback_vtable(
_public_ int sd_bus_remove_fallback_vtable(
sd_bus *bus,
const char *path,
- const char *interface) {
+ const char *interface,
+ const sd_bus_vtable *vtable,
+ sd_bus_object_find_t find,
+ void *userdata) {
- return remove_object_vtable_internal(bus, path, interface, true);
+ return remove_object_vtable_internal(bus, path, interface, vtable, true, find, userdata);
}
_public_ int sd_bus_add_node_enumerator(
@@ -1824,8 +1859,8 @@ static int emit_properties_changed_on_interface(
char **names) {
_cleanup_bus_message_unref_ sd_bus_message *m = NULL;
- bool has_invalidating = false;
- struct vtable_member key;
+ bool has_invalidating = false, has_changing = false;
+ struct vtable_member key = {};
struct node_vtable *c;
struct node *n;
char **property;
@@ -1841,23 +1876,6 @@ static int emit_properties_changed_on_interface(
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_new_signal(bus, path, "org.freedesktop.DBus.Properties", "PropertiesChanged", &m);
if (r < 0)
return r;
@@ -1873,52 +1891,78 @@ static int emit_properties_changed_on_interface(
key.path = prefix;
key.interface = interface;
- STRV_FOREACH(property, names) {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- struct vtable_member *v;
-
- assert_return(member_name_is_valid(*property), -EINVAL);
-
- key.member = *property;
- v = hashmap_get(bus->vtable_properties, &key);
- if (!v)
- return -ENOENT;
-
- assert(c == v->parent);
- assert_return(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE, -EDOM);
+ LIST_FOREACH(vtables, c, n->vtables) {
+ if (require_fallback && !c->is_fallback)
+ continue;
- if (v->vtable->flags & SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY) {
- has_invalidating = true;
+ if (!streq(c->interface, interface))
continue;
- }
- r = sd_bus_message_open_container(m, 'e', "sv");
+ r = node_vtable_get_userdata(bus, path, c, &u);
if (r < 0)
return r;
+ if (bus->nodes_modified)
+ return 0;
+ if (r == 0)
+ continue;
- r = sd_bus_message_append(m, "s", *property);
- if (r < 0)
- return r;
+ STRV_FOREACH(property, names) {
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ struct vtable_member *v;
- r = sd_bus_message_open_container(m, 'v', v->vtable->x.property.signature);
- if (r < 0)
- return r;
+ assert_return(member_name_is_valid(*property), -EINVAL);
- 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 (bus->nodes_modified)
- return 0;
+ key.member = *property;
+ v = hashmap_get(bus->vtable_properties, &key);
+ if (!v)
+ return -ENOENT;
+
+ /* If there are two vtables for the same
+ * interface, let's handle this property when
+ * we come to that vtable. */
+ if (c != v->parent)
+ continue;
- r = sd_bus_message_close_container(m);
- if (r < 0)
- return r;
+ assert_return(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE, -EDOM);
- r = sd_bus_message_close_container(m);
- if (r < 0)
- return r;
+ if (v->vtable->flags & SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY) {
+ has_invalidating = true;
+ continue;
+ }
+
+ has_changing = true;
+
+ r = sd_bus_message_open_container(m, 'e', "sv");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(m, "s", *property);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(m, 'v', v->vtable->x.property.signature);
+ if (r < 0)
+ return r;
+
+ 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 (bus->nodes_modified)
+ return 0;
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+ }
}
+ if (!has_invalidating && !has_changing)
+ return 0;
+
r = sd_bus_message_close_container(m);
if (r < 0)
return r;
@@ -1928,19 +1972,35 @@ static int emit_properties_changed_on_interface(
return r;
if (has_invalidating) {
- STRV_FOREACH(property, names) {
- struct vtable_member *v;
-
- key.member = *property;
- assert_se(v = hashmap_get(bus->vtable_properties, &key));
- assert(c == v->parent);
+ LIST_FOREACH(vtables, c, n->vtables) {
+ if (require_fallback && !c->is_fallback)
+ continue;
- if (!(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY))
+ if (!streq(c->interface, interface))
continue;
- r = sd_bus_message_append(m, "s", *property);
+ r = node_vtable_get_userdata(bus, path, c, &u);
if (r < 0)
return r;
+ if (bus->nodes_modified)
+ return 0;
+ if (r == 0)
+ continue;
+
+ STRV_FOREACH(property, names) {
+ struct vtable_member *v;
+
+ key.member = *property;
+ assert_se(v = hashmap_get(bus->vtable_properties, &key));
+ assert(c == v->parent);
+
+ if (!(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY))
+ continue;
+
+ r = sd_bus_message_append(m, "s", *property);
+ if (r < 0)
+ return r;
+ }
}
}
@@ -2028,6 +2088,7 @@ static int interfaces_added_append_one_prefix(
bool require_fallback) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ bool found_interface = false;
struct node_vtable *c;
struct node *n;
void *u = NULL;
@@ -2047,38 +2108,43 @@ static int interfaces_added_append_one_prefix(
if (require_fallback && !c->is_fallback)
continue;
- if (streq(c->interface, interface))
- break;
- }
+ if (!streq(c->interface, interface))
+ continue;
- if (!c)
- return 0;
+ r = node_vtable_get_userdata(bus, path, c, &u);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ if (r == 0)
+ continue;
- r = node_vtable_get_userdata(bus, path, c, &u);
- if (r <= 0)
- return r;
- if (bus->nodes_modified)
- return 0;
+ if (!found_interface) {
+ r = sd_bus_message_append_basic(m, 's', interface);
+ if (r < 0)
+ return r;
- 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 = sd_bus_message_open_container(m, 'a', "{sv}");
- if (r < 0)
- return r;
+ found_interface = true;
+ }
- r = vtable_append_all_properties(bus, m,path, c, u, &error);
- if (r < 0)
- return r;
- if (bus->nodes_modified)
- return 0;
+ r = vtable_append_all_properties(bus, m, path, c, u, &error);
+ if (r < 0)
+ return r;
+ if (bus->nodes_modified)
+ return 0;
+ }
- r = sd_bus_message_close_container(m);
- if (r < 0)
- return r;
+ if (found_interface) {
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+ }
- return 1;
+ return found_interface;
}
static int interfaces_added_append_one(
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-06 03:04:36 +0000