summaryrefslogtreecommitdiff
path: root/src/libsystemd/libsystemd-internal/sd-bus/DIFFERENCES
diff options
context:
space:
mode:
Diffstat (limited to 'src/libsystemd/libsystemd-internal/sd-bus/DIFFERENCES')
-rw-r--r--src/libsystemd/libsystemd-internal/sd-bus/DIFFERENCES25
1 files changed, 25 insertions, 0 deletions
diff --git a/src/libsystemd/libsystemd-internal/sd-bus/DIFFERENCES b/src/libsystemd/libsystemd-internal/sd-bus/DIFFERENCES
new file mode 100644
index 0000000000..db269675a7
--- /dev/null
+++ b/src/libsystemd/libsystemd-internal/sd-bus/DIFFERENCES
@@ -0,0 +1,25 @@
+Known differences between dbus1 and kdbus:
+
+- NameAcquired/NameLost is gone entirely on kdbus backends if
+ libsystemd is used. It is still added in by systemd-bus-proxyd
+ for old dbus1 clients, and it is available if libsystemd is used
+ against the classic dbus1 daemon. If you want to write compatible
+ code with libsystem-bus you need to explicitly subscribe to
+ NameOwnerChanged signals and just ignore NameAcquired/NameLost
+
+- Applications have to deal with spurious signals they didn't expect,
+ due to the probabilistic bloom filters. They need to handle this
+ anyway, given that any client can send anything to arbitrary clients
+ anyway, even in dbus1, so not much changes.
+
+- clients of the system bus when kdbus is used must roll their own
+ security. Only legacy dbus1 clients get the old XML policy enforced,
+ which is implemented by systemd-bus-proxyd.
+
+- Serial numbers of synthesized messages are always (uint32_t) -1.
+
+- NameOwnerChanged is a synthetic message, generated locally and not
+ by the driver. On dbus1 only the Disconnected message was
+ synthesized like this.
+
+- There's no standard per-session bus anymore. Only a per-user bus.