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authorLennart Poettering <lennart@poettering.net>2014-08-18 17:41:56 +0200
committerLennart Poettering <lennart@poettering.net>2014-08-18 17:49:53 +0200
commitcaa829849d6ac9f6e173f585f732054358311ae1 (patch)
treed4e90bf247457b9863f4465b82d8a855224e8bcd
parentb5af2aca120f1bf13cffc270803c2232918dd967 (diff)
sd-bus: add API to query which handler/callback is currently being dispatched
-rw-r--r--src/libsystemd/sd-bus/bus-internal.h2
-rw-r--r--src/libsystemd/sd-bus/bus-match.c10
-rw-r--r--src/libsystemd/sd-bus/bus-objects.c16
-rw-r--r--src/libsystemd/sd-bus/bus-slot.c20
-rw-r--r--src/libsystemd/sd-bus/sd-bus.c28
-rw-r--r--src/systemd/sd-bus.h6
6 files changed, 79 insertions, 3 deletions
diff --git a/src/libsystemd/sd-bus/bus-internal.h b/src/libsystemd/sd-bus/bus-internal.h
index 618e82c98f..f2ccdfd177 100644
--- a/src/libsystemd/sd-bus/bus-internal.h
+++ b/src/libsystemd/sd-bus/bus-internal.h
@@ -298,6 +298,8 @@ struct sd_bus {
sd_bus_message *current_message;
sd_bus_slot *current_slot;
+ sd_bus_message_handler_t current_handler;
+ void *current_userdata;
sd_bus **default_bus_ptr;
pid_t tid;
diff --git a/src/libsystemd/sd-bus/bus-match.c b/src/libsystemd/sd-bus/bus-match.c
index 9e0769caa6..88b61a75be 100644
--- a/src/libsystemd/sd-bus/bus-match.c
+++ b/src/libsystemd/sd-bus/bus-match.c
@@ -294,11 +294,17 @@ int bus_match_run(
sd_bus_slot *slot;
slot = container_of(node->leaf.callback, sd_bus_slot, match_callback);
- if (bus)
+ if (bus) {
bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_handler = node->leaf.callback->callback;
+ bus->current_userdata = slot->userdata;
+ }
r = node->leaf.callback->callback(bus, m, slot->userdata, &error_buffer);
- if (bus)
+ if (bus) {
+ bus->current_userdata = NULL;
+ bus->current_handler = NULL;
bus->current_slot = sd_bus_slot_unref(slot);
+ }
r = bus_maybe_reply_error(m, r, &error_buffer);
if (r != 0)
diff --git a/src/libsystemd/sd-bus/bus-objects.c b/src/libsystemd/sd-bus/bus-objects.c
index 78dab8048d..03604091ec 100644
--- a/src/libsystemd/sd-bus/bus-objects.c
+++ b/src/libsystemd/sd-bus/bus-objects.c
@@ -51,7 +51,9 @@ static int node_vtable_get_userdata(
u = s->userdata;
if (c->find) {
bus->current_slot = sd_bus_slot_ref(s);
+ bus->current_userdata = u;
r = c->find(bus, path, c->interface, u, &u, error);
+ bus->current_userdata = NULL;
bus->current_slot = sd_bus_slot_unref(s);
if (r < 0)
@@ -123,7 +125,9 @@ static int add_enumerated_to_set(
slot = container_of(c, sd_bus_slot, node_enumerator);
bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_userdata = slot->userdata;
r = c->callback(bus, prefix, slot->userdata, &children, error);
+ bus->current_userdata = NULL;
bus->current_slot = sd_bus_slot_unref(slot);
if (r < 0)
@@ -273,7 +277,11 @@ static int node_callbacks_run(
slot = container_of(c, sd_bus_slot, node_callback);
bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_handler = c->callback;
+ bus->current_userdata = slot->userdata;
r = c->callback(bus, m, slot->userdata, &error_buffer);
+ bus->current_userdata = NULL;
+ bus->current_handler = NULL;
bus->current_slot = sd_bus_slot_unref(slot);
r = bus_maybe_reply_error(m, r, &error_buffer);
@@ -388,7 +396,11 @@ static int method_callbacks_run(
slot = container_of(c->parent, sd_bus_slot, node_vtable);
bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_handler = c->vtable->x.method.handler;
+ bus->current_userdata = u;
r = c->vtable->x.method.handler(bus, m, u, &error);
+ bus->current_userdata = NULL;
+ bus->current_handler = NULL;
bus->current_slot = sd_bus_slot_unref(slot);
return bus_maybe_reply_error(m, r, &error);
@@ -427,7 +439,9 @@ static int invoke_property_get(
if (v->x.property.get) {
bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_userdata = userdata;
r = v->x.property.get(bus, path, interface, property, reply, userdata, error);
+ bus->current_userdata = NULL;
bus->current_slot = sd_bus_slot_unref(slot);
if (r < 0)
@@ -489,7 +503,9 @@ static int invoke_property_set(
if (v->x.property.set) {
bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_userdata = userdata;
r = v->x.property.set(bus, path, interface, property, value, userdata, error);
+ bus->current_userdata = NULL;
bus->current_slot = sd_bus_slot_unref(slot);
if (r < 0)
diff --git a/src/libsystemd/sd-bus/bus-slot.c b/src/libsystemd/sd-bus/bus-slot.c
index 5e927511d5..d6793c29e9 100644
--- a/src/libsystemd/sd-bus/bus-slot.c
+++ b/src/libsystemd/sd-bus/bus-slot.c
@@ -245,3 +245,23 @@ _public_ sd_bus_message *sd_bus_slot_get_current_message(sd_bus_slot *slot) {
return slot->bus->current_message;
}
+
+_public_ sd_bus_message_handler_t sd_bus_slot_get_current_handler(sd_bus_slot *slot) {
+ assert_return(slot, NULL);
+ assert_return(slot->type >= 0, NULL);
+
+ if (slot->bus->current_slot != slot)
+ return NULL;
+
+ return slot->bus->current_handler;
+}
+
+_public_ void* sd_bus_slot_get_current_userdata(sd_bus_slot *slot) {
+ assert_return(slot, NULL);
+ assert_return(slot->type >= 0, NULL);
+
+ if (slot->bus->current_slot != slot)
+ return NULL;
+
+ return slot->bus->current_userdata;
+}
diff --git a/src/libsystemd/sd-bus/sd-bus.c b/src/libsystemd/sd-bus/sd-bus.c
index 0fadd1699e..83233fd7e6 100644
--- a/src/libsystemd/sd-bus/sd-bus.c
+++ b/src/libsystemd/sd-bus/sd-bus.c
@@ -2102,7 +2102,11 @@ static int process_timeout(sd_bus *bus) {
bus->current_message = m;
bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_handler = c->callback;
+ bus->current_userdata = slot->userdata;
r = c->callback(bus, m, slot->userdata, &error_buffer);
+ bus->current_userdata = NULL;
+ bus->current_handler = NULL;
bus->current_slot = sd_bus_slot_unref(slot);
bus->current_message = NULL;
@@ -2194,7 +2198,11 @@ static int process_reply(sd_bus *bus, sd_bus_message *m) {
}
bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_handler = c->callback;
+ bus->current_userdata = slot->userdata;
r = c->callback(bus, m, slot->userdata, &error_buffer);
+ bus->current_userdata = NULL;
+ bus->current_handler = NULL;
bus->current_slot = sd_bus_slot_unref(slot);
if (slot->floating) {
@@ -2235,7 +2243,11 @@ static int process_filter(sd_bus *bus, sd_bus_message *m) {
slot = container_of(l, sd_bus_slot, filter_callback);
bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_handler = l->callback;
+ bus->current_userdata = slot->userdata;
r = l->callback(bus, m, slot->userdata, &error_buffer);
+ bus->current_userdata = NULL;
+ bus->current_handler = NULL;
bus->current_slot = sd_bus_slot_unref(slot);
r = bus_maybe_reply_error(m, r, &error_buffer);
@@ -2512,7 +2524,11 @@ static int process_closing(sd_bus *bus, sd_bus_message **ret) {
bus->current_message = m;
bus->current_slot = sd_bus_slot_ref(slot);
+ bus->current_handler = c->callback;
+ bus->current_userdata = slot->userdata;
r = c->callback(bus, m, slot->userdata, &error_buffer);
+ bus->current_userdata = NULL;
+ bus->current_handler = NULL;
bus->current_slot = sd_bus_slot_unref(slot);
bus->current_message = NULL;
@@ -3113,6 +3129,18 @@ _public_ sd_bus_slot* sd_bus_get_current_slot(sd_bus *bus) {
return bus->current_slot;
}
+_public_ sd_bus_message_handler_t sd_bus_get_current_handler(sd_bus *bus) {
+ assert_return(bus, NULL);
+
+ return bus->current_handler;
+}
+
+_public_ void* sd_bus_get_current_userdata(sd_bus *bus) {
+ assert_return(bus, NULL);
+
+ return bus->current_userdata;
+}
+
static int bus_default(int (*bus_open)(sd_bus **), sd_bus **default_bus, sd_bus **ret) {
sd_bus *b = NULL;
int r;
diff --git a/src/systemd/sd-bus.h b/src/systemd/sd-bus.h
index 3eedb4450b..0352d16ce6 100644
--- a/src/systemd/sd-bus.h
+++ b/src/systemd/sd-bus.h
@@ -148,8 +148,10 @@ int sd_bus_process(sd_bus *bus, sd_bus_message **r);
int sd_bus_process_priority(sd_bus *bus, int64_t max_priority, sd_bus_message **r);
int sd_bus_wait(sd_bus *bus, uint64_t timeout_usec);
int sd_bus_flush(sd_bus *bus);
-sd_bus_message* sd_bus_get_current_message(sd_bus *bus);
sd_bus_slot* sd_bus_get_current_slot(sd_bus *bus);
+sd_bus_message* sd_bus_get_current_message(sd_bus *bus);
+sd_bus_message_handler_t sd_bus_get_current_handler(sd_bus *bus);
+void* sd_bus_get_current_userdata(sd_bus *bus);
int sd_bus_attach_event(sd_bus *bus, sd_event *e, int priority);
int sd_bus_detach_event(sd_bus *bus);
@@ -175,6 +177,8 @@ void *sd_bus_slot_get_userdata(sd_bus_slot *slot);
void *sd_bus_slot_set_userdata(sd_bus_slot *slot, void *userdata);
sd_bus_message* sd_bus_slot_get_current_message(sd_bus_slot *slot);
+sd_bus_message_handler_t sd_bus_slot_get_current_handler(sd_bus_slot *bus);
+void *sd_bus_slot_get_current_userdata(sd_bus_slot *slot);
/* Message object */