1 dbus 1.12.12 (UNRELEASED)
2 =========================
4 dbus version control is now hosted on freedesktop.org's Gitlab
5 installation, and bug reports and feature requests have switched from
6 Bugzilla bugs (indicated by "fd.o #nnn") to Gitlab issues ("dbus#nnn")
7 and merge requests ("dbus!nnn").
11 • Reference the freedesktop.org Code of Conduct (Simon McVittie)
15 • Stop the dbus-daemon leaking memory (an error message) if delivering
16 the message that triggered auto-activation is forbidden. This is
17 technically a denial of service because the dbus-daemon will
18 run out of memory eventually, but it's a very slow and noisy one,
19 because all the rejected messages are also very likely to have
20 been logged to the system log, and its scope is typically limited by
21 the finite number of activatable services available.
22 (dbus#234, Simon McVittie)
24 • Remove __attribute__((__malloc__)) attribute on dbus_realloc(),
25 which does not meet the criteria for that attribute in gcc 4.7+,
26 potentially leading to miscompilation (fd.o #107741, Simon McVittie)
28 • Fix some small O(1) memory leaks (fd.o #107320, Simon McVittie)
30 • Fix printf formats for pointer-sized integers on 64-bit Windows
31 (fd.o #105662, Ralf Habacker)
33 • Always use select()-based poll() emulation on Darwin-based OSs
34 (macOS, etc.) and on Interix, similar to what libcurl does
35 (dbus#232, dbus!19; Simon McVittie)
37 • Extend a test timeout to avoid spurious failures in CI
38 (dbus!26, Simon McVittie)
42 • Add Travis-CI builds for 64-bit Windows using mingw-w64
43 (fd.o #105662, Ralf Habacker)
45 • Add Gitlab-CI integration (fd.o #108177, Simon McVittie)
47 dbus 1.12.10 (2018-08-02)
48 =========================
50 The “beam deflection” release.
54 • Prevent reading up to 3 bytes beyond the end of a truncated message.
55 This could in principle be an information leak or denial of service
56 on the system bus, but is not believed to be exploitable to crash
57 the system bus or leak interesting information in practice.
58 (fd.o #107332, Simon McVittie)
60 • Fix build with gcc 8 -Werror=cast-function-type
61 (fd.o #107349, Simon McVittie)
63 • Fix warning from gcc 8 about suspicious use of strncpy() when
64 populating struct sockaddr_un (fd.o #107350, Simon McVittie)
66 • Fix a minor memory leak when a DBusServer listens on a new address
67 (fd.o #107194, Simon McVittie)
69 • Fix an invalid NULL argument to rmdir() if a nonce-tcp DBusServer
70 runs out of memory (fd.o #107194, Simon McVittie)
72 • Don't use misleading errno-derived error names if getaddrinfo() or
73 getnameinfo() fails with a code other than EAI_SYSTEM
74 (fd.o #106395, Simon McVittie)
76 • Skip tests that require working TCP if we are in a container environment
77 where 127.0.0.1 cannot be resolved (fd.o #106812, Simon McVittie)
79 dbus 1.12.8 (2018-04-30)
80 ========================
82 The “golden super-velociraptor” release.
86 • The Devhelp documentation index is now in version 2 format
87 (fd.o #106186, Simon McVittie)
89 • Give the dbus-daemon man page some scarier warnings about
90 <allow_anonymous/> and non-local TCP, which are insecure and should
91 not be used, particularly for the standard system and session buses
92 (fd.o #106004, Simon McVittie)
96 • Fix installation of Ducktype documentation with newer yelp-build
97 versions (fd.o #106171, Simon McVittie)
99 dbus 1.12.6 (2018-03-01)
100 ========================
102 The “just the one swan, actually” release.
106 • Increase system dbus-daemon's RLIMIT_NOFILE rlimit before it drops
107 privileges, because it won't have permission afterwards. This fixes a
108 regression in dbus 1.10.18 and 1.11.0 which made the standard system bus
109 more susceptible to deliberate or accidental denial of service.
110 (fd.o #105165, David King)
112 dbus 1.12.4 (2018-02-08)
113 ========================
115 The “Stria Campania 115” release.
119 • When iterating the DBusConnection while blocking on a pending call,
120 don't wait for I/O if that pending call already has a result; and make
121 sure that whether it has a result is propagated in a thread-safe way.
122 This prevents certain multi-threaded calling patterns from blocking
123 until their timeout even when they should have succeeded sooner.
124 (fd.o #102839; Manish Narang, Michael Searle)
126 • Report the correct error if OOM is reached while trying to listen
127 on a TCP socket (fd.o #89104, Simon McVittie)
129 • Fix assertion failures in recovery from OOM while setting up a
130 DBusServer (fd.o #89104, Simon McVittie)
132 • Add a missing space to a warning message (fd.o #103729, Thomas Zajic)
134 • Expand ${bindir} correctly when pkg-config is asked for dbus_daemondir
135 (fd.o #104265, Benedikt Heine)
137 • On Linux systems with systemd < 237, if ${localstatedir}/dbus doesn't
138 exist, create it before trying to create ${localstatedir}/dbus/machine-id
139 (fd.o #104577, Chris Lesiak)
141 • Fix escaping in dbus-api-design document (fd.o #104925, Philip Withnall)
143 dbus 1.12.2 (2017-11-13)
144 ========================
146 The “spider pumpkin” release.
150 • Log a warning if a new connection cannot be accepted due to an
151 out-of-memory condition or failure to identify its AppArmor or
152 SELinux context (fd.o #103592, Simon McVittie)
156 • Make use of $(MKDIR_P) compatible with install-sh, fixing build when a
157 GNU-compatible `mkdir -p` is not available (fd.o #103521, ilovezfs)
159 • When building for Windows with Autotools, avoid `echo -e`, fixing
160 cross-compilation on non-GNU platforms like macOS
161 (fd.o #103493, Tony Theodore)
163 • Fix crashes in the server side of the nonce-tcp: transport under
164 various error conditions. This transport should normally only be used
165 on Windows, where AF_UNIX sockets are unavailable; the unix: transport
166 is the only one recommended for production use on Unix platforms.
167 (fd.o #103597, Simon McVittie)
171 • Improve test coverage on Travis-CI (Simon McVittie)
173 dbus 1.12.0 (2017-10-30)
174 ========================
176 The “gingerbread skull” release.
178 1.12.x is a new stable branch, recommended for use in OS
181 Summary of major changes between 1.10.x and 1.12.0
182 --------------------------------------------------
186 • Expat >= 2.1.0 is required.
187 • GLib >= 2.40 is required if full test coverage is enabled.
188 • [Linux] libselinux >= 2.0.86 is required if SELinux support is
190 • [Unix] dbus now requires an <inttypes.h> that defines C99 constants
191 such as PRId64 and PRIu64, except when building for Windows.
192 • [Autotools] Building from git (but not from tarballs) with Autotools
193 now requires macros from the GNU Autoconf Archive.
194 • [CMake] Builds done using CMake now require CMake 3.0.2.
196 Build-time configuration changes:
198 • Expat is now found using pkg-config. See the release notes for
200 • The --disable-compiler-optimisations and --enable-compiler-coverage
201 options no longer exist. See the release notes for 1.11.4 and 1.11.8.
202 • [Unix] The --enable-abstract-sockets and --disable-abstract-sockets
203 options no longer exist. See the release notes for 1.11.20.
204 • [Unix] Flag files in /var/run/console/${username} are no longer
205 checked for at_console by default. See the release notes for 1.11.18.
206 • [Unix, Cygwin] Init scripts are no longer provided by upstream dbus,
207 and packagers will now need to add these downstream (most already do).
208 See the release notes for 1.11.18.
209 • [Unix] The process ID file no longer has a different default location
210 on Red Hat derivatives. See the release notes for 1.11.18.
211 • [Unix] ${runstatedir} is now independent of ${localstatedir} with
212 recent Autotools versions. See the release notes for 1.11.16.
213 • [Windows] The WINDRES variable is no longer used. See the release
218 • Eavesdropping is officially deprecated in favour of BecomeMonitor.
219 See the release notes for spec version 0.31 (in dbus 1.11.14).
220 • [Unix] Flag files in /var/run/console/${username} are deprecated.
221 See the release notes for 1.11.18.
225 • <allow> and <deny> rules in dbus-daemon configuration can now
226 include send_broadcast="true", send_broadcast="false",
227 max_unix_fds="N", min_unix_fds="N" (for some integer N).
228 See the release notes for 1.11.18.
229 • dbus_try_get_local_machine_id() is like
230 dbus_get_local_machine_id(), but returns a DBusError.
231 • New APIs around DBusMessageIter to simplify cleanup.
232 See the release notes for 1.11.16.
233 • The message bus daemon now implements the standard Introspectable,
234 Peer and Properties interfaces. See the release notes for
235 dbus 1.11.14 and spec version 0.31.
236 • DTDs for introspection XML and bus configuration are installed.
237 • dbus can be compiled to be relocatable, making it more suitable for
238 binary bundling with other software. On Windows, this is on by
240 • [Unix] A new unix:dir=… address family resembles unix:tmpdir=… but
241 never uses Linux abstract sockets, which is advantageous for
242 containers. On non-Linux it is equivalent to unix:tmpdir=….
243 See the release notes for dbus 1.11.14 and spec version 0.31.
244 • [Unix] New option "dbus-launch --exit-with-x11".
245 • [Unix] Session managers can create transient .service files in
246 $XDG_RUNTIME_DIR/dbus-1/services. See the release notes for 1.11.12.
247 • [Unix] A sysusers.d snippet can create the messagebus user on-demand.
249 Miscellaneous behaviour changes:
251 • [Unix] The session bus now logs to syslog if it was started by
253 • [Unix] Internal warnings are logged to syslog if configured.
254 • [Unix] Exceeding an anti-DoS limit is logged to syslog if configured,
257 Changes since 1.11.22 release candidate
258 ---------------------------------------
260 Standard stable-branch changes:
262 • Disable warnings about use of deprecated functions (Simon McVittie)
266 • Don't distribute files generated by ./configure in the source tarball
267 (fd.o #103420, Simon McVittie)
271 • Remove some unused files from the git repository
272 (fd.o #103420, Simon McVittie)
274 D-Bus 1.11.22 (2017-10-23)
275 ==========================
277 The “fire surface” release.
279 This is the first release-candidate for the 1.12.0 stable release.
281 Build-time configuration changes:
283 • When building for Windows with Autotools, setting the WINDRES variable
284 no longer works to select a non-standard resource compiler. Use
285 libtool's standard RC variable instead, for example
286 "./configure RC=i686-w64-mingw32-windres"
290 • Builds done using CMake now require CMake 3.0.2.
294 • When building for Windows, improve quality of metadata in
295 libdbus-1-3.dll (fd.o #103015, Ralf Habacker)
299 • Fix a typo "uint 16" in dbus-send(1) man page
300 (fd.o #103075, David King)
302 • When building for Windows, libdbus-1-3.dll always includes version
303 information. Previously, this was missing if using CMake and any
304 non-MSVC compiler. (fd.o #103015, Ralf Habacker)
306 • Fix the build with MSVC, which regressed with the #102558 fix in
307 1.11.20. (fd.o #102558, Ralf Habacker)
311 • Simplify Windows resource embedding
312 (fd.o #103015, Simon McVittie)
314 D-Bus 1.11.20 (2017-10-03)
317 The “wraith stun” release.
319 Build-time configuration changes:
321 • The --enable-abstract-sockets and --disable-abstract-sockets options
322 no longer exist. Support for Linux's abstract AF_UNIX sockets is now
323 unconditionally enabled on Linux and disabled everywhere else.
324 (fd.o #34905, Simon McVittie)
328 • Make slower tests less likely to time out, and improve diagnostics if
329 tests do time out (fd.o #103009, Simon McVittie)
331 • On Windows, don't compile an unused stub implementation of
332 _dbus_set_signal_handler() (fd.o #103010, Simon McVittie)
336 • Be more careful to save and restore errno in POSIX async signal
337 handlers (fd.o #103010, Simon McVittie)
339 • On Windows, embed a manifest in dbus-update-activation-environment.exe
340 so that the heuristics used for UAC do not assume it needs elevated
341 privileges due to its name containing "update"
342 (fd.o #102558, Ralf Habacker)
344 • On Windows with Automake, embed version information in libdbus-1,
345 as was meant to happen in all versions since 2009
346 (fd.o #103015, Simon McVittie)
348 D-Bus 1.11.18 (2017-09-25)
351 The “vampire conquistador” release.
353 Build-time configuration changes:
355 • By default, dbus-daemon on Unix no longer checks for flag files
356 /var/run/console/${username} created by the obsolete pam_console and
357 pam_foreground PAM modules when deciding whether ${username} is
358 currently at the console. The old default behaviour can be restored
359 by specifying --with-console-auth-dir=/var/run/console in the
360 recommended Autotools build system, or
361 -DDBUS_CONSOLE_AUTH_DIR=/var/run/console in CMake. This feature is
362 now deprecated, and will be removed in dbus 1.13 unless feedback via
363 fd.o #101629 indicates that this would be problematic.
364 (fd.o #101629, Simon McVittie)
366 • LSB-style init scripts for Red Hat and Slackware, and a non-LSB init
367 script for Cygwin, are no longer provided in the upstream dbus
368 source. We recommend that distributors who support non-systemd service
369 management should maintain their own init scripts or other service
370 manager integration as part of their downstream packaging, similar to
371 the way Debian distributes a Debian-specific LSB init script for dbus.
373 The systemd unit continues to be maintained as part of the upstream
374 dbus source, because it receives regular testing and maintenance.
376 (fd.o #101706, Simon McVittie)
378 • The process ID file created by the system bus is no longer influenced
379 by the --with-init-scripts=redhat configure option or the presence of
380 /etc/redhat-release at build time. If your OS's init script or other
381 service management relies on the Red Hat-style pid file, it can be
382 restored by specifying --with-system-pid-file=/run/messagebus.pid at
383 configure time or using the <pidfile> directive in bus configuration.
385 Note that the upstream-supplied systemd unit runs dbus-daemon with
386 the --nopidfile option, so it does not normally write a pid file,
387 regardless of whether the OS is Red-Hat-derived or not.
389 (fd.o #101706, Simon McVittie)
393 • <allow> and <deny> rules in dbus-daemon configuration can now
394 include send_broadcast="true" or send_broadcast="false", which make
395 the rule only match broadcast signals, or only match messages that
396 are not broadcast signals, respectively.
397 (fd.o #29853, Simon McVittie)
399 • <allow> and <deny> rules can now be configured to apply only to
400 messages with or without Unix file descriptors attached. This would
401 typically be used in rules like these:
402 <allow send_destination="..." max_unix_fds="0"/>
403 <deny send_destination="..." min_unix_fds="1"/>
404 <deny receive_sender="..." min_unix_fds="1"/>
405 but can also be used to set a nonzero upper limit on the number of
407 <allow send_destination="..." max_unix_fds="4"/>
408 (fd.o #101848, Simon McVittie)
410 • On Unix platforms, the DBUS_COOKIE_SHA1 authentication mechanism
411 now respects the HOME environment variable on the client side, and
412 on the server side when the uid attempting to connect is the same
413 as the uid of the server. This allows the automated tests to pass in
414 environments where the user's "official" home directory in /etc/passwd
415 is nonexistent, such as Debian autobuilders.
416 (fd.o #101960, Simon McVittie)
420 • When parsing dbus-daemon configuration, tell Expat not to use
421 cryptographic-quality entropy as a salt for its hash tables: we trust
422 the configuration files, so we are not concerned about algorithmic
423 complexity attacks via hash table collisions. This prevents
424 dbus-daemon --system from holding up the boot process (and causing
425 early-boot system services like systemd, logind, networkd to time
426 out) on entropy-starved embedded systems.
427 (fd.o #101858, Simon McVittie)
429 • Avoid a -Werror=declaration-after-statement build failure on Solaris
430 (fd.o #102145, Alan Coopersmith)
432 • On Unix platform, drop DBUS_SYSTEM_LOG_INFO messages from LOG_NOTICE
433 to LOG_INFO, matching how we use this log level in practice
434 (fd.o #102686, Simon McVittie)
436 D-Bus 1.11.16 (2017-07-27)
439 The “south facing garden” release.
441 Build-time configuration changes:
443 • The Autotools build system now supports varying ${runstatedir}
444 independently of ${localstatedir}, if using an Autoconf version
445 that has that feature; version 2.70 will eventually have this, but
446 many Linux distributions add it to version 2.69 as a patch.
447 A typical use is to set prefix=/usr, sysconfdir=/etc, localstatedir=/var
448 and runstatedir=/run. (fd.o #101569, Simon McVittie)
452 • New APIs DBUS_MESSAGE_ITER_INIT_CLOSED, dbus_message_iter_init_closed()
453 and dbus_message_iter_abandon_container_if_open() simplify the
454 single-exit-point ("goto out") style of resource cleanup. The API
455 documentation around DBusMessageIter and containers has also been
456 clarified. (fd.o #101568, Simon McVittie)
460 • Fix the implementation of re-enabling a timeout (again) so that its
461 countdown is always restarted as intended. (fd.o #95619,
464 • Make the dbus-daemon's Properties interface, as introduced in 1.11.14,
465 available to all users on the system bus (fd.o #101700, Simon McVittie)
467 • dbus_message_iter_append_basic() no longer leaks memory if it fails to
468 append a file descriptor to a message. (fd.o #101568, Simon McVittie)
470 • dbus_message_iter_open_container() no longer leaks memory if it runs out
471 of memory. (fd.o #101568, Simon McVittie)
473 • dbus_message_append_args_valist() no longer leaks memory if given an
474 unsupported type. This situation is still considered to be a programming
475 error which needs to be corrected by the user of libdbus.
476 (fd.o #101568, Simon McVittie)
478 • dbus_message_iter_append_basic() and dbus_message_iter_open_container()
479 will no longer report that their arguments were invalid if they run out
480 of memory at exactly the wrong time. (fd.o #101568, Simon McVittie)
482 • Ensure that tests fail if they would otherwise have tried to connect to
483 the real session bus (fd.o #101698, Simon McVittie)
485 • Make build-time tests cope with finding Python 3, but not Python 2
486 (fd.o #101716, Simon McVittie)
488 Internal changes relevant to dbus developers:
490 • DBusVariant is a new mechanism to copy single values from a message into
491 a buffer without copying the entire message (fd.o #101568, Simon McVittie)
493 • DBUS_SYSTEM_LOG_FATAL has been replaced by DBUS_SYSTEM_LOG_ERROR.
494 Logging an ERROR message does not make the process exit; the caller
495 is responsible for calling abort() or exit(), whichever is more appropriate.
496 (fd.o #101568, Simon McVittie)
498 • Better test coverage (fd.o #101568, Simon McVittie)
500 D-Bus 1.11.14 (2017-06-29)
503 The “irrational fear of bees” release.
507 • Expat >= 2.1.0 is always required
508 • libselinux >= 2.0.86 is required if SELinux support is enabled
509 • GLib >= 2.40 is required if full test coverage is enabled
511 Build-time configuration changes:
513 • We now use pkg-config to find libexpat in Autotools builds. This requires
514 Expat 2.1.0 (March 2012) or later. In particular, this should remove the
515 need to configure with LDFLAGS=-L/usr/local/lib on OpenBSD, which can
516 itself cause compilation failures.
518 As with all pkg-config-based configure checks, you can use
519 PKG_CONFIG_PATH=/whatever/lib/pkgconfig to find expat.pc in a
520 non-standard prefix, or EXPAT_CFLAGS="-I/whatever/include" and
521 EXPAT_LIBS="-L/whatever/lib -lexpat" to avoid needing a .pc file
524 (fd.o #69801, Simon McVittie)
526 • Similarly, we now use pkg-config to find libselinux. Version 2.0.86
527 is required due to the removal of explicit refcounting for SIDs.
528 (fd.o #100912, Laurent Bigonville)
532 • Previously, /etc/machine-id could be copied to /var/lib/dbus/machine-id
533 as a side-effect of a sufficiently privileged process merely reading the
534 machine ID. It is no longer copied as a side-effect of reading.
535 Running dbus-uuidgen --ensure, which should be done after installing dbus,
536 continues to copy /etc/machine-id to /var/lib/dbus/machine-id if the
537 former exists and the latter does not.
538 (fd.o #101257, Simon McVittie)
540 • The undocumented Verbose interface, and the GetAllMatchRules method on
541 the undocumented Stats interface, must now be used via the object path
542 /org/freedesktop/DBus. Previously, they existed on all object paths.
543 (fd.o #101257, Simon McVittie)
545 • AddMatch() with a match rule containing eavesdrop='true' will now fail
546 unless called by either the same user as the dbus-daemon, or Unix uid 0
547 (root), matching the restrictions applied to the newer BecomeMonitor()
548 method. On the session bus this has no practical effect. On the system
549 bus this will prevent certain configurations that already did not
550 work well in practice. (fd.o #101567, Simon McVittie)
554 • D-Bus Specification version 0.31
555 · Don't require implementation-specific search paths to be lowest
557 · Correct regex syntax for optionally-escaped bytes in addresses so it
558 includes hyphen-minus, forward slash and underscore as intended
559 · Describe all message bus methods in the same section
560 · Clarify the correct object path for method calls to the message bus
561 (/org/freedesktop/DBus, DBUS_PATH_DBUS in the reference implementation)
562 · Document that the message bus implements Introspectable, Peer and
564 · Add new Features and Interfaces properties for message bus
566 · Add unix:dir=..., which resembles unix:tmpdir=... but never uses
568 · Don't require eavesdrop='true' to be accepted from connections not
569 sufficiently privileged to use it successfully
570 · Formally deprecate eavesdropping in favour of BecomeMonitor
571 (fd.o #99825, #100686, #100795, #101256, #101257, #101567;
572 Simon McVittie, Tom Gundersen)
574 • Implement the Properties and Peer interfaces in dbus-daemon
575 (fd.o #101257, Simon McVittie)
577 • New function dbus_try_get_local_machine_id() is like
578 dbus_get_local_machine_id(), but returning a DBusError. Other code
579 that needs the machine ID will now report a recoverable error (instead
580 of logging to stderr and aborting) if no machine ID is available.
581 Generating a machine ID is still considered to be a required part of
582 installing dbus correctly. (fd.o #13194, Simon McVittie)
584 • Implement GetConnectionSELinuxSecurityContext("org.freedesktop.DBus")
585 (fd.o #101315, Laurent Bigonville)
587 • Avoid deprecated API calls when using SELinux
588 (fd.o #100912, Laurent Bigonville)
590 • Switch a test from the deprecated g_test_trap_fork() to
591 g_test_trap_subprocess(), for Windows support and better robustness
592 on Unix (fd.o #101362, Simon McVittie)
594 • On systemd systems, if ${localstatedir}/dbus/machine-id doesn't exist,
595 instruct systemd-tmpfiles to make it a symbolic link to /etc/machine-id.
596 This prevents the two files from going out of sync on stateless or live
597 images without needing to run dbus-uuidgen, and supports older D-Bus
598 implementations that do not necessarily read /etc/machine-id themselves.
599 (fd.o #101570, Simon McVittie)
601 • Implement unix:dir=..., which resembles unix:tmpdir=... but never uses
602 abstract sockets. This is preferable when used with Linux containers.
603 (fd.o #101567, Simon McVittie)
607 • Fix a reference leak when blocking on a pending call on a connection
608 that has been disconnected (fd.o #101481, Shin-ichi MORITA)
610 • Don't put timestamps in the Doxygen-generated documentation,
611 or hard-code the build directory into builds with embedded tests,
612 for reproducible builds (fd.o #100692, Simon McVittie)
614 • Fix some integration test issues (fd.o #100686, Simon McVittie)
616 • Fix memory leaks in the tests (fd.o #101257, Simon McVittie)
618 • If we somehow get an autolaunch address with multiple semicolon-separated
619 components, and they don't work, don't invalidly "pile up" errors
620 (fd.o #101257, Simon McVittie)
624 • Update git URIs in HACKING document to sync up with cgit.freedesktop.org
625 (fd.o #100715, Simon McVittie)
627 D-Bus 1.11.12 (2017-04-07)
630 The “it's something humans do” release.
634 • The session dbus-daemon now supports transient .service files
635 in $XDG_RUNTIME_DIR/dbus-1/services. Unlike the other standard
636 service directories, this directory is not monitored with inotify
637 or similar, and the service files must be named exactly
638 ${bus_name}.service. (fd.o #99825, Simon McVittie)
640 • dbus can be configured with --enable-relocation when building with
641 Autotools, or with -DDBUS_RELOCATABLE=ON when building with cmake,
642 to make the pkg-config metadata relocatable. This is useful for
643 non-standard prefixes, and in particular for Windows installations.
644 However, it is not recommended for system-wide installations into
645 /usr, because it interferes with pkg-config's ability to filter out
646 compiler default linker directories.
648 With Autotools, the default is --enable-relocation when building
649 for Windows or --disable-relocation otherwise. With CMake, the default
650 is -DDBUS_RELOCATABLE=ON.
652 (fd.o #99721; Ralf Habacker, Simon McVittie)
654 • Users of CMake ≥ 2.6 can now link to libdbus without providing their
655 own FindDBus.cmake macros, whether dbus was compiled with Autotools
656 or with CMake. See the end of README.cmake for more information.
657 (fd.o #99721; Ralf Habacker, Simon McVittie)
661 • Always read service file directories in the intended order
662 (fd.o #99825, Simon McVittie)
664 • When tests are skipped, don't try to kill nonexistent process 0
665 (fd.o #99825, Simon McVittie)
667 • Avoid valgrind false positives (fd.o #88808, Philip Withnall)
669 • Fix a harmless read overflow and some memory leaks in a unit test
670 (fd.o #100568, Philip Withnall)
672 • Fix some typos in test code
673 (fd.o #99999, Coverity #141876, #141877; Philip Withnall)
675 • Clarify the roles of /etc/dbus-1/s*.d and /usr/share/dbus-1/s*.d
676 in documentation (fd.o #99901, Philip Withnall)
678 • Fix and enable compiler warnings related to -Wswitch
679 (fd.o #98191; Thomas Zimmermann, Simon McVittie)
681 • Fix writing off the end of a fd_set when testing with valgrind
682 (fd.o #99839, Philip Withnall)
684 D-Bus 1.11.10 (2017-02-16)
687 The “purple hair gives you telekinesis?” release.
691 • AppArmor support requires at least libapparmor 2.8.95, reduced
692 from 2.10 in previous versions. One test requires 2.10 and is
693 skipped if building with an older version.
697 • Do the Travis-CI build in Docker containers for Ubuntu LTS, Debian
698 stable and Debian testing in addition to the older Ubuntu that is
699 the default (fd.o #98889, Simon McVittie)
701 • Avoid some deprecated CMake functions (fd.o #99586, Ralf Habacker)
703 • Silence many -Wswitch-enum and -Wswitch-default warnings
704 (fd.o #98191; Thomas Zimmermann, Simon McVittie)
706 • Install a sysusers.d snippet so `dbus-daemon --system` can be used
707 with an unpopulated /etc (fd.o #99162, Lennart Poettering)
709 • Install pkg-config metadata on Unix even if building with CMake
710 (fd.o #99752, Ralf Habacker)
712 • Exclude auth mechanisms from REJECTED message if they are supported
713 in the code but but configured to be disallowed (fd.o #99621,
718 • Prevent symlink attacks in the nonce-tcp transport on Unix that could
719 allow an attacker to overwrite a file named "nonce", in a directory
720 that the user running dbus-daemon can write, with a random value
721 known only to the user running dbus-daemon. This is unlikely to be
722 exploitable in practice, particularly since the nonce-tcp transport
723 is really only useful on Windows.
725 On Unix systems we strongly recommend using only the unix: and systemd:
726 transports, together with EXTERNAL authentication. These are the only
727 transports and authentication mechanisms enabled by default.
729 (fd.o #99828, Simon McVittie)
731 • Avoid symlink attacks in the "embedded tests", which are not enabled
732 by default and should never be enabled in production builds of dbus.
733 (fd.o #99828, Simon McVittie)
735 • Fix the implementation of re-enabling a timeout so that its
736 countdown is restarted as intended, instead of continually
737 decreasing. (fd.o #95619; Michal Koutný, Simon McVittie)
739 • When receiving a message with file descriptors, do not start reading
740 the beginning of the next message, so that only one such message
741 is processed at a time. In conjunction with the fix for #95619
742 this means that processes sending many file descriptors, such as
743 systemd-logind on a system that receives very rapid ssh connections,
744 are not treated as abusive and kicked off the bus. Revert the previous
745 workaround that special-cased uid 0.
746 (fd.o #95263, LP#1591411; Simon McVittie)
748 • Do not require TMPDIR, TEMP or TMP to be set when cross-compiling
749 for Windows with CMake (fd.o #99586, Ralf Habacker)
751 • Do not set Unix-specific variables when targeting Windows
752 (fd.o #99586, Ralf Habacker)
754 • Install Unix executables to ${CMAKE_INSTALL_PREFIX}/bin as intended,
755 not ${CMAKE_INSTALL_PREFIX}/lib (fd.o #99752, Ralf Habacker)
757 • Use relative install locations in CMake on Unix to respect DESTDIR,
758 and use GNU-style install layout (fd.o #99721, #99752; Ralf Habacker)
760 • Install dbus-arch-deps.h correctly when using CMake
761 (fd.o #99586, #99721; Ralf Habacker)
763 • Improve argument validation for `dbus-test-tool spam`
764 (ffd.o #99693, Coverity #54759; Philip Withnall)
766 • Don't shift by a negative integer if a hash table becomes monstrously
767 large (fd.o #99641, Coverity #54682; Philip Withnall)
769 • Don't leak LSM label if dbus-daemon runs out of memory when dealing with
770 a new connection (fd.o #99612, Coverity #141058; Philip Withnall)
772 • Remove an unnecessary NULL check
773 (fd.o #99642, Coverity #141062; Philip Withnall)
775 • Improve error handling in unit tests and dbus-send
776 (fd.o #99643, #99694, #99712, #99722, #99723, #99724, #99758,
777 #99759, #99793, Coverity #54688, #54692, #54693, #54697, #54701,
778 #54710, #54711, #54714, #54715, #54718, #54721, #54724, #54726,
779 #54730, #54740, #54822, #54823, #54824, #54825; Philip Withnall)
781 • Do not print verbose messages' timestamps to stderr if the actual message
782 has been redirected to the Windows debug port (fd.o #99749, Ralf Habacker)
784 D-Bus 1.11.8 (2016-11-28)
787 The “panics in the face of breakfast foods” release.
789 Build-time configuration:
791 • The new --enable-debug configure option provides an easy way to
792 enable debug symbols, disable optimization and/or enable profiling.
794 • The --enable-compile-warnings configure option can be used to control
797 • The --disable-compiler-optimisations configure option is no longer
798 supported. Use --enable-debug=yes or CFLAGS=-O0 instead.
802 • D-Bus Specification version 0.30
803 · Define the jargon term "activation" more clearly
804 · Define the jargon term "auto-starting", which is one form of activation
805 · Document the optional SystemdService key in service files
806 · Use versioned interface and bus names in most examples
807 · Clarify intended behaviour of Properties.GetAll
808 (fd.o #36190, fd.o #98671; Philip Withnall, Simon McVittie)
810 • Fix and enable a lot of compiler warnings to improve future code
811 quality. This might incidentally also fix some environment variable
813 · In particular, printf-style functions in the libdbus API are now annotated
814 with __attribute__((__format__(__printf__, *, *))) when compiling with
815 gcc or clang. This might make printf bugs in other software visible
817 (fd.o #97357, fd.o #98192, fd.o #98195, fd.o #98658;
818 Thomas Zimmermann, Simon McVittie)
820 • When running with AppArmor mediation (for example using Ubuntu's patched
821 Linux kernel), clients can no longer auto-start services unless they would
822 have been able to send the auto-starting message to the service after it
823 starts. StartServiceByName() is unaffected, and continues to be allowed by
824 default in AppArmor's <abstractions/dbus-strict> and
825 <abstractions/dbus-session-strict>. (fd.o #98666, Simon McVittie)
829 • Work around an undesired effect of the fix for CVE-2014-3637
830 (fd.o #80559), in which processes that frequently send fds, such as
831 logind during a flood of new PAM sessions, can get disconnected for
832 continuously having at least one fd "in flight" for too long;
833 dbus-daemon interprets that as a potential denial of service attack.
834 The workaround is to disable that check for uid 0 process such as
835 logind, with a message in the system log. The bug remains open while
836 we look for a more general solution.
837 (fd.o #95263, LP#1591411; Simon McVittie)
839 • Don't run the test test-dbus-launch-x11.sh if X11 autolaunching
840 was disabled at compile time. That test is not expected to work
841 in that configuration. (fd.o #98665, Simon McVittie)
843 D-Bus 1.11.6 (2016-10-10)
846 The “darkly whimsical” release.
850 • Do not treat ActivationFailure message received from root-owned systemd
851 name as a format string. In principle this is a security vulnerability,
852 but we do not believe it is exploitable in practice, because only
853 privileged processes can own the org.freedesktop.systemd1 bus name, and
854 systemd does not appear to send activation failures that contain "%".
856 Please note that this probably *was* exploitable in dbus versions
857 older than 1.6.30, 1.8.16 and 1.9.10 due to a missing check which at
858 the time was only thought to be a denial of service vulnerability
859 (CVE-2015-0245). If you are still running one of those versions,
860 patch or upgrade immediately.
862 (fd.o #98157, Simon McVittie)
866 • D-Bus Specification version 0.29
867 · Recommend not using '/' for object paths (fd.o #37095, Philip Withnall)
868 · Allow <annotation> in <arg> elements (fd.o #86162, Philip Withnall)
870 • Log to syslog when we exceed various anti-DoS limits, and add test
871 coverage for them (fd.o #86442, Simon McVittie)
873 • Improve syslog handling so that _dbus_warn() and similar warnings
874 go to syslog, add dbus-daemon --syslog|--nosyslog|--syslog-only options,
875 and log to syslog (instead of /dev/null) when dbus-daemon is started by
876 dbus-launch. (fd.o #97009, Simon McVittie)
878 • Install introspect.dtd and busconfig.dtd to ${datadir}/xml/dbus-1
879 (fd.o #89011, Philip Withnall)
881 • When logging messages about service activation, mention which peer
882 requested the activation (fd.o #68212, Philip Withnall)
884 • On Linux, mention the LSM label (if available) whenever we print
885 debug information about a peer (fd.o #68212, Philip Withnall)
889 • Harden dbus-daemon against malicious or incorrect ActivationFailure
890 messages by rejecting them if they do not come from a privileged
891 process, or if systemd activation is not enabled
892 (fd.o #98157, Simon McVittie)
894 • Avoid undefined behaviour when setting reply serial number without going
895 via union DBusBasicValue (fd.o #98035, Marc Mutz)
897 • Fix CMake build for Unix platforms that do not have -lrt, such as Android,
898 or that do need -lsocket, such as QNX (fd.o #94096, Ralf Habacker)
900 • autogen.sh: fail cleanly if autoconf fails (Simon McVittie)
902 D-Bus 1.11.4 (2016-08-15)
905 The “copper pickaxe” release.
909 • Building from git (but not from tarballs) now requires
910 macros from the GNU Autoconf Archive, for example the autoconf-archive
911 package in Debian or Fedora derivatives.
913 Build-time configuration:
915 • The option to enable coverage instrumentation has changed from
916 --enable-compiler-coverage to --enable-code-coverage.
920 • D-Bus Specification version 0.28
921 · Clarify some details of serialization (fd.o #93382, Philip Withnall)
923 • Increase listen() backlog of AF_UNIX sockets to the maximum possible,
924 minimizing failed connections under heavy load
925 (fd.o #95264, Lennart Poettering)
927 • Add a new dbus-launch --exit-with-x11 option (fd.o #39197, Simon McVittie)
929 • Use the same regression tests for subprocess starting on Unix and Windows
930 (fd.o #95191, Ralf Habacker)
932 • Print timestamps and thread IDs in verbose messages
933 (fd.o #95191, Ralf Habacker)
935 • On Unix, unify the various places that reopen stdin, stdout and/or stderr
936 pointing to /dev/null (fd.o #97008, Simon McVittie)
938 • Use AX_CODE_COVERAGE instead of our own COMPILER_COVERAGE
939 (fd.o #88922, Thomas Zimmermann)
943 • On Windows, fix a memory leak in replacing the installation prefix
944 (fd.o #95191, Ralf Habacker)
946 • On Linux, when dbus-daemon is run with reduced susceptibility to the
947 OOM killer (typically via systemd), do not let child processes inherit
948 that setting (fd.o #32851; Kimmo Hämäläinen, WaLyong Cho)
950 • On Unix, make dbus-launch and dbus-daemon --fork work as intended
951 even if a parent process incorrectly starts them with stdin, stdout
952 and/or stderr closed (fd.o #97008, Simon McVittie)
954 • Output valid shell syntax in ~/.dbus/session-bus/ if the bus address
955 contains a semicolon (fd.o #94746, Thiago Macieira)
957 • Fix memory leaks and thread safety in subprocess starting on Windows
958 (fd.o #95191, Ralf Habacker)
960 • Stop test-dbus-daemon incorrectly failing on platforms that cannot
961 discover the process ID of clients (fd.o #96653, Руслан Ижбулатов)
963 • In tests that exercise correct handling of crashing D-Bus services,
964 suppress Windows crash handler (fd.o #95155; Yiyang Fei, Ralf Habacker)
966 • Explicitly check for stdint.h (Ioan-Adrian Ratiu)
968 • In tests, add an invalid DBusAuthState to avoid undefined behaviour
969 in some test cases (fd.o #93909, Nick Lewycky)
971 • Add assertions to reassure a static analysis tool
972 (fd.o #93210, Deepika Aggarwal)
974 • Be explicit about enum comparison when loading XML
975 (fd.o #93205, Deepika Aggarwal)
977 • update-activation-environment: produce better diagnostics on error
978 (fd.o #96653, Simon McVittie)
980 • Avoid various compiler warnings with gcc 6
981 (fd.o #97282; Thomas Zimmermann, Simon McVittie)
983 • On Unix when configured to use the system log, report as "dbus-daemon",
984 not as "dbus" (fd.o #97009, Simon McVittie)
986 • During unit tests, reduce the amount we write to the system log
987 (fd.o #97009, Simon McVittie)
989 D-Bus 1.11.2 (2016-03-07)
992 The “pneumatic drill vs. Iron Maiden” release.
996 • Enable "large file support" on systems where it exists: dbus-daemon
997 is not expected to open large files, but it might need to stat files
998 that happen to have large inode numbers (fd.o #93545, Hongxu Jia)
1000 • Eliminate padding inside DBusMessageIter on 64-bit platforms,
1001 which might result in a pedantic C compiler not copying the entire contents
1002 of a DBusMessageIter; statically assert that this is not an ABI change
1003 in practice (fd.o #94136, Simon McVittie)
1005 • Document dbus-test-tool echo --sleep-ms=N instead of incorrect --sleep=N
1006 (fd.o #94244, Dmitri Iouchtchenko)
1008 • Correctly report test failures in C tests from run-test.sh
1009 (fd.o #93379; amit tewari, Simon McVittie)
1011 • When tests are enabled, run all the marshal-validate tests, not just
1012 the even-numbered ones (fd.o #93908, Nick Lewycky)
1014 • Correct the expected error from one marshal-validate test, which was
1015 previously not run due to the above bug (fd.o #93908, Simon McVittie)
1017 • Fix compilation under CMake when embedded tests are disabled
1018 (fd.o #94094, eric.hyer)
1022 • Fix all -Wpointer-sign (signed/unsigned mismatch) warnings, and enable the
1023 warning (fd.o #93069; Ralf Habacker, Simon McVittie)
1025 • When building with CMake, use the same gcc/clang warnings as under Autotools,
1026 or MSVC warnings that are broadly similar (fd.o #93069, Ralf Habacker)
1028 • test/name-test: make C tests produce TAP output and run them directly, not
1029 via run-test.sh (fd.o #92899, Simon McVittie)
1031 • Under CMake when cross-compiling for Windows on Unix, run the tests
1032 under Wine even if binfmt_misc support is not available
1033 (fd.o #88966, Ralf Habacker)
1035 • The DBUS_USE_TEST_BINARY environment variable is no longer used by builds with
1036 embedded tests; DBUS_TEST_DBUS_LAUNCH replaces it (fd.o #92899, Simon McVittie)
1038 • Factor out some functions that will be needed in future for a Windows
1039 implementation of dbus-run-session (fd.o #92899, Ralf Habacker)
1041 D-Bus 1.11.0 (2015-12-02)
1044 The “peppermint deer” release.
1048 • On non-Windows platforms, dbus now requires an <inttypes.h> that defines
1049 C99 constants such as PRId64 and PRIu64.
1053 • D-Bus Specification version 0.27
1054 · Specify that services should not reply if NO_REPLY_EXPECTED was used
1055 (fd.o #75749, Lars Uebernickel)
1057 • Add a script to do continuous-integration builds, and metadata to run it
1058 on travis-ci.org. To use this, clone the dbus git repository on GitHub
1059 and set it up with travis-ci.org; the only special setting needed is
1060 "only build branches with a .travis.yml". (fd.o #93194, Simon McVittie)
1062 • If dbus-daemon is run with --systemd-activation, do not require
1063 org.freedesktop.systemd1.service to exist (fd.o #93194, Simon McVittie)
1067 • Re-order dbus-daemon startup so that on SELinux systems, the thread
1068 that reads AVC notifications retains the ability to write to the
1069 audit log (fd.o #92832, Laurent Bigonville)
1071 • Print 64-bit integers on non-GNU Unix platforms (fd.o #92043, Natanael Copa)
1073 • When using the Monitoring interface, match messages' destinations
1074 (fd.o #92074, Simon McVittie)
1076 • On Linux with systemd, stop installing a reference to the obsolete
1077 dbus.target, and enable dbus.socket statically (fd.o #78412, #92402;
1080 • On Windows, when including configuration files with <include> or
1081 <includedir>, apply the same relocation as for the Exec paths
1082 in .service files (fd.o #92028, Simon McVittie)
1084 • Add support for backtraces on Windows (fd.o #92721, Ralf Habacker)
1086 • Fix many -Wpointer-sign warnings (fd.o #93069, Ralf Habacker)
1088 D-Bus 1.10.6 (2015-12-01)
1091 The “marzipan beetles” release.
1095 • On Unix when running tests as root, don't assert that root and
1096 the dbus-daemon user can still call UpdateActivationEnvironment;
1097 assert that those privileged users can call BecomeMonitor instead
1098 (fd.o #93036, Simon McVittie)
1100 • On Windows, fix a memory leak in the autolaunch transport (fd.o #92899,
1103 • On Windows Autotools builds, don't run tests that rely on
1104 dbus-run-session and other Unix-specifics (fd.o #92899, Simon McVittie)
1106 D-Bus 1.10.4 (2015-11-17)
1109 The “Frostburn Canyon” release.
1113 • GetConnectionCredentials, GetConnectionUnixUser and
1114 GetConnectionUnixProcessID with argument "org.freedesktop.DBus"
1115 will now return details of the dbus-daemon itself. This is required
1116 to be able to call SetEnvironment on systemd.
1117 (fd.o #92857, Jan Alexander Steffens)
1121 • Make UpdateActivationEnvironment always fail with AccessDenied on the
1122 system bus. Previously, it was possible to configure it so root could
1123 call it, but the environment variables were not actually used,
1124 because the launch helper would discard them.
1125 (fd.o #92857, Jan Alexander Steffens)
1127 • On Unix with --systemd-activation on a user bus, make
1128 UpdateActivationEnvironment pass on its arguments to systemd's
1129 SetEnvironment method, solving inconsistency between the environments
1130 used for traditional activation and systemd user-service activation.
1131 (fd.o #92857, Jan Alexander Steffens)
1133 • On Windows, don't crash if <syslog/> or --syslog is used
1134 (fd.o #92538, Ralf Habacker)
1136 • On Windows, fix a memory leak when setting a DBusError from a Windows
1137 error (fd.o #92721, Ralf Habacker)
1139 • On Windows, don't go into infinite recursion if we abort the process
1140 with backtraces enabled (fd.o #92721, Ralf Habacker)
1142 • Fix various failing tests, variously on Windows and cross-platform:
1143 · don't test system.conf features (users, groups) that only make sense
1144 on the system bus, which is not supported on Windows
1145 · don't call _dbus_warn() when we skip a test, since it is fatal
1146 · fix computation of expected <standard_session_servicedirs/>
1147 · when running TAP tests, translate newlines to Unix format, fixing
1148 cross-compiled tests under Wine on Linux
1149 · don't stress-test refcounting under Wine, where it's really slow
1150 · stop assuming that a message looped-back to the test will be received
1152 · skip some system bus tests on Windows since they make no sense there
1153 (fd.o #92538, fd.o #92721; Ralf Habacker, Simon McVittie)
1155 D-Bus 1.10.2 (2015-10-26)
1158 The “worst pies in London” release.
1162 • Correct error handling for activation: if there are multiple attempts
1163 to activate the same service and it fails immediately, the first attempt
1164 would get the correct reply, but the rest would time out. We now send
1165 the same error reply to each attempt. (fd.o #92200, Simon McVittie)
1167 • If BecomeMonitor is called with a syntactically invalid match rule,
1168 don't crash with an assertion failure, fixing a regression in 1.9.10.
1169 This was not exploitable as a denial of service, because the check
1170 for a privileged user is done first. (fd.o #92298, Simon McVittie)
1172 • On Linux with --enable-user-session, add the bus address to the
1173 environment of systemd services for better backwards compatibility
1174 (fd.o #92612, Jan Alexander Steffens)
1176 • On Windows, fix the logic for replacing the installation prefix
1177 in service files' Exec lines (fd.o #83539; Milan Crha, Simon McVittie)
1179 • On Windows, if installed in the conventional layout with ${prefix}/etc
1180 and ${prefix}/share, use relative paths between bus configuration files
1181 to allow the tree to be relocated (fd.o #92028, Simon McVittie)
1183 • Make more of the regression tests pass in Windows builds (fd.o #92538,
1186 D-Bus 1.10.0 (2015-08-25)
1191 This is a new stable branch, recommended for use in OS distributions.
1195 • distribute test/tap-test.sh.in, even if the tarball was built without
1196 tests enabled (fd.o #91684, Simon McVittie)
1197 • work around a fd leak in libcap-ng < 0.7.7 (fd.o #91684, Simon McVittie)
1199 Summary of major changes since 1.8.0:
1201 • The basic setup for the well-known system and session buses is
1202 now done in read-only files in ${datadir} (normally /usr/share).
1203 See the NEWS entry for 1.9.18 for details.
1205 • AppArmor integration has been merged, with features similar to the
1206 pre-existing SELinux integration. It is mostly compatible with the
1207 patches previously shipped by Ubuntu, with one significant change:
1208 Ubuntu's GetConnectionAppArmorSecurityContext method has been superseded
1209 by GetConnectionCredentials and was not included.
1211 • The --enable-user-session configure option can be enabled
1212 by OS integrators intending to use systemd to provide a session bus
1213 per user (in effect, treating all concurrent graphical and non-graphical
1214 login sessions as one large session).
1216 • The new listenable address mode "unix:runtime=yes" listens on
1217 $XDG_RUNTIME_DIR/bus, the same AF_UNIX socket used by the systemd
1218 user session. libdbus and "dbus-launch --autolaunch" will connect to
1219 this address by default. GLib ≥ 2.45.3 and sd-bus ≥ 209 have a
1222 • All executables are now dynamically linked to libdbus-1.
1223 Previously, some executables, most notably dbus-daemon, were statically
1224 linked to a specially-compiled variant of libdbus. This results in
1225 various private functions in the _dbus namespace being exposed by the
1226 shared library. These are not API, and must not be used outside
1227 the dbus source tree.
1229 • On platforms with ELF symbol versioning, all public symbols
1230 are versioned LIBDBUS_1_3.
1234 • org.freedesktop.DBus.GetConnectionCredentials returns
1235 LinuxSecurityLabel where supported
1236 • org.freedesktop.DBus.Monitoring interface (privileged)
1237 · BecomeMonitor method supersedes match rules with eavesdrop=true,
1238 which are now deprecated
1239 • org.freedesktop.DBus.Stats interface (semi-privileged)
1240 · now enabled by default
1241 · new GetAllMatchRules method
1242 • org.freedesktop.DBus.Verbose interface (not normally compiled)
1243 · toggles the effect of DBUS_VERBOSE
1248 • dbus-update-activation-environment
1250 New optional dependencies:
1252 • The systemd: pseudo-transport requires libsystemd or libsd-daemon
1253 • Complete documentation requires Ducktype and yelp-tools
1254 • Full test coverage requires GLib 2.36 and PyGI
1255 • AppArmor integration requires libapparmor and optionally libaudit
1257 Dependencies removed:
1261 D-Bus 1.9.20 (2015-08-06)
1264 The “Remember Tomorrow” release.
1266 This is a release-candidate for D-Bus 1.10.0. OS distribution vendors
1271 • Don't second-guess what the ABI of poll() is, allowing it to be used
1272 on Integrity RTOS and other unusual platforms (fd.o #90314;
1273 Rolland Dudemaine, Simon McVittie)
1275 • Don't duplicate audit subsystem integration if AppArmor and SELinux are
1276 both enabled (fd.o #89225, Simon McVittie)
1278 • Log audit events for AppArmor/SELinux policy violations whenever
1279 we have CAP_AUDIT_WRITE, even if not the system bus
1280 (fd.o #83856, Laurent Bigonville)
1282 D-Bus 1.9.18 (2015-07-21)
1285 The “Pirate Elite” release.
1287 Configuration changes:
1289 • The basic setup for the well-known system and session buses is now done
1290 in read-only files in ${datadir}, moving a step closer to systems
1291 that can operate with an empty /etc directory. In increasing order
1294 · ${datadir}/dbus-1/s*.conf now perform the basic setup such as setting
1295 the default message policies.
1296 · ${sysconfdir}/dbus-1/s*.conf are now optional. By default
1297 dbus still installs a trivial version of each, for documentation
1298 purposes; putting configuration directives in these files is deprecated.
1299 · ${datadir}/dbus-1/s*.d/ are now available for third-party software
1300 to install "drop-in" configuration snippets (any packages
1301 using those directories should explicitly depend on at least this
1303 · ${sysconfdir}/dbus-1/s*.d/ are also still available for sysadmins
1304 or third-party software to install "drop-in" configuration snippets
1305 · ${sysconfdir}/dbus-1/s*-local.conf are still available for sysadmins'
1308 ${datadir} is normally /usr/share, ${sysconfdir} is normally /etc,
1309 and "s*" refers to either system or session as appropriate.
1311 (fd.o #89280, Dimitri John Ledkov)
1315 • Fix a memory leak when GetConnectionCredentials() succeeds
1316 (fd.o #91008, Jacek Bukarewicz)
1318 • Ensure that dbus-monitor does not reply to messages intended for others,
1319 resulting in its own disconnection (fd.o #90952, Simon McVittie)
1321 D-Bus 1.9.16 (2015-05-14)
1324 The “titanium barns” release.
1328 • Automake 1.13 is now required when compiling from git or modifying
1333 • On Unix platforms, change the default configuration for the session bus
1334 to only allow EXTERNAL authentication (secure kernel-mediated
1335 credentials-passing), as was already done for the system bus.
1337 This avoids falling back to DBUS_COOKIE_SHA1, which relies on strongly
1338 unpredictable pseudo-random numbers.
1340 If you are using D-Bus over the (unencrypted!) tcp: or nonce-tcp: transport,
1341 in conjunction with DBUS_COOKIE_SHA1 and a shared home directory using
1342 NFS or similar, you will need to reconfigure the session bus to accept
1343 DBUS_COOKIE_SHA1 by commenting out the <auth> element. This configuration
1346 (fd.o #90414, Simon McVittie)
1348 • When asked for random numbers for DBUS_COOKIE_SHA1, the nonce-tcp:
1349 transport, UUIDs or any other reason, fail if we cannot obtain entropy
1350 (from /dev/urandom or CryptGenRandom()) or an out-of-memory condition
1351 occurs, instead of silently falling back to low-entropy pseudorandom
1352 numbers from rand(). (fd.o #90414; Simon McVittie, Ralf Habacker)
1356 • Add dbus_message_iter_get_element_count()
1357 (fd.o #30350; Christian Dywan, Simon McVittie)
1359 • Introduce new internal DBusSocket and DBusPollable types so we can
1360 stop treating the Windows SOCKET type as if it was int. DBusSocket
1361 is specifically a socket, cross-platform. DBusPollable is whatever
1362 _dbus_poll() can act on, i.e. a fd on Unix or a SOCKET on Windows.
1363 (fd.o #89444; Ralf Habacker, Simon McVittie)
1365 • All regression tests now output TAP <https://testanything.org/>
1366 (fd.o #89846, Simon McVittie)
1368 • Internal APIs consistently use signed values for timestamps
1369 (fd.o #18494, Peter McCurdy)
1371 • Improve diagnostics when UpdateActivationEnvironment calls are rejected
1372 (fd.o #88812, Simon McVittie)
1374 • Clean up a lot of compiler warnings
1375 (fd.o #17289, fd.o #89284; Ralf Habacker, Simon McVittie)
1379 • Add locking to DBusCounter's reference count and notify function
1380 (fd.o #89297, Adrian Szyndela)
1382 • Ensure that DBusTransport's reference count is protected by the
1383 corresponding DBusConnection's lock (fd.o #90312, Adrian Szyndela)
1385 • Correctly release DBusServer mutex before early-return if we run out
1386 of memory while copying authentication mechanisms (fd.o #90021,
1389 • Make dbus-test-tool and dbus-update-activation-environment portable
1390 to Windows (fd.o #90089, Ralf Habacker)
1392 • Correctly initialize all fields of DBusTypeReader (fd.o #90021;
1393 Ralf Habacker, Simon McVittie)
1395 • Fix some missing \n in verbose (debug log) messages (fd.o #90004,
1398 • Clean up some memory and fd leaks in test code and tools
1399 (fd.o #90021, Ralf Habacker)
1401 • Fix a NULL dereference if the dbus-daemon cannot read a configuration
1402 directory for a reason that is not ENOENT (fd.o #90021, Ralf Habacker)
1404 • CMake generates a versioned shared library even if the revision is 0,
1405 as it usually is on the development branch. (fd.o #89450, Ralf Habacker)
1407 D-Bus 1.9.14 (2015-03-02)
1410 The “don't stand in the poison cloud” release.
1414 • dbus-daemon and dbus-daemon-launch-helper now require libdbus. They
1415 were previously linked to a static version of libdbus.
1417 • The tests no longer require dbus-glib in order to exercise the libdbus
1418 shared library; they are always linked to libdbus now.
1420 Build-time configuration:
1422 • The new --enable-user-session option, off by default, can be enabled
1423 by OS integrators intending to use systemd to provide a session bus
1424 per user (in effect, treating all concurrent graphical and non-graphical
1425 login sessions as one large session)
1429 • All executables are now linked dynamically to libdbus.
1430 (fd.o #83115; Bertrand SIMONNET, Simon McVittie, Ralf Habacker)
1432 • On platforms that support them (GNU libc and possibly others),
1433 libdbus now has versioned symbols for its public API.
1434 All public symbols (visible in the header files) are currently
1435 versioned as LIBDBUS_1_3; private symbols starting with _dbus or
1436 dbus_internal have a version that changes with each release, and
1437 must not be used by applications. (also fd.o #83115)
1439 • New listenable address mode "unix:runtime=yes" which listens on
1440 a real filesystem (non-abstract) socket $XDG_RUNTIME_DIR/bus
1441 (fd.o #61303; Colin Walters, Alexander Larsson, Simon McVittie)
1443 • Add optional systemd units for a per-user bus listening on
1444 $XDG_RUNTIME_DIR/bus (fd.o #61301; Simon McVittie, Colin Walters)
1446 • On Unix platforms, both libdbus and "dbus-launch --autolaunch"
1447 default to connecting to $XDG_RUNTIME_DIR/bus if it is a socket
1450 • New dbus-update-activation-environment tool uploads environment
1451 variables to "dbus-daemon --session" and optionally "systemd --user",
1452 primarily as a way to keep the per-user bus compatible with
1453 distributions' existing X11 login scripts (also fd.o #61301)
1455 • <includedir/> elements in dbus-daemon configuration are now silently
1456 ignored if the directory does not exist. (fd.o #89280, Dimitri John Ledkov)
1458 • Add microsecond-resolution timestamps to the default output of
1459 dbus-monitor and dbus-send (fd.o #88896; Ralf Habacker, Simon McVittie)
1463 • Fix a race condition in the 'monitor' test introduced in 1.9.10
1464 (fd.o #89222, Simon McVittie)
1466 D-Bus 1.9.12 (2015-02-19)
1469 The “monster lasagna” release.
1473 • Ducktype and yelp-tools are now required to build complete documentation
1474 (they are optional for normal builds).
1478 • D-Bus Specification version 0.26
1479 · GetConnectionCredentials can return LinuxSecurityLabel or WindowsSID
1480 · document the BecomeMonitor method
1482 • On Linux, add LinuxSecurityLabel to GetConnectionCredentials
1483 (fd.o #89041; Tyler Hicks, Simon McVittie)
1485 • On Linux, add support for AppArmor mediation of message sending and
1486 receiving and name ownership (paralleling existing SELinux mediation
1487 support), and eavesdropping (a new check, currently AppArmor-specific)
1488 (fd.o #75113; John Johansen, Tyler Hicks, Simon McVittie)
1490 • In dbus-send and dbus-monitor, pretty-print \0-terminated bytestrings
1491 that have printable ASCII contents; we previously only did this for
1492 unterminated bytestrings (fd.o #89109, Simon McVittie)
1494 • Add a guide to designing good D-Bus APIs (fd.o #88994, Philip Withnall)
1496 • On Windows, add WindowsSID to GetConnectionCredentials
1497 (fd.o #54445, Ralf Habacker)
1499 • Improve clarity of dbus-monitor --profile output and add more columns
1500 (fd.o #89165, Ralf Habacker)
1502 • Add a man page for dbus-test-tool, and build it under CMake as well
1503 as Autotools (fd.o#89086, Simon McVittie)
1505 • If dbus-daemon was compiled with --enable-verbose, add a D-Bus API
1506 to control it at runtime, overriding the DBUS_VERBOSE environment variable
1507 (fd.o #88896, Ralf Habacker)
1511 • Reduce the number of file descriptors used in the fd-passing test,
1512 avoiding failure under the default Linux fd limit, and automatically
1513 skip it if the rlimit is too small (fd.o #88998, Simon McVittie)
1515 D-Bus 1.9.10 (2015-02-09)
1518 The “sad cyborgs” release.
1520 Security fixes merged from 1.8.16:
1522 • Do not allow non-uid-0 processes to send forged ActivationFailure
1523 messages. On Linux systems with systemd activation, this would
1524 allow a local denial of service: unprivileged processes could
1525 flood the bus with these forged messages, winning the race with
1526 the actual service activation and causing an error reply
1527 to be sent back when service auto-activation was requested.
1528 This does not prevent the real service from being started,
1529 so the attack only works while the real service is not running.
1530 (CVE-2015-0245, fd.o #88811; Simon McVittie)
1534 • The new Monitoring interface in the dbus-daemon lets dbus-monitor and
1535 similar tools receive messages without altering the security properties
1536 of the system bus, by calling the new BecomeMonitor method on a
1537 private connection. This bypasses the normal <allow> and <deny> rules
1538 entirely, so to preserve normal message-privacy assumptions, only root
1539 is allowed to do this on the system bus. Restricted environments,
1540 such as Linux with LSMs, should lock down access to the Monitoring
1541 interface. (fd.o #46787, Simon McVittie)
1543 • dbus-monitor uses BecomeMonitor to capture more traffic, if the
1544 dbus-daemon supports it and access permissions allow it.
1545 It still supports the previous approach ("eavesdropping" match rules)
1546 for compatibility with older bus daemons. (fd.o #46787, Simon)
1548 • dbus-monitor can now log the message stream as binary data for later
1549 analysis, with either no extra framing beyond the normal D-Bus headers,
1550 or libpcap-compatible framing treating each D-Bus message
1551 as a captured packet. (fd.o #46787, Simon)
1555 • Fix some CMake build regressions (fd.o #88964, Ralf Habacker)
1557 • On Unix, forcibly terminate regression tests after 60 seconds to
1558 prevent them from blocking continuous integration frameworks
1559 (fd.o #46787, Simon)
1561 D-Bus 1.9.8 (2015-02-03)
1564 The “all the types of precipitation” release.
1568 • full test coverage now requires GLib 2.36
1569 • full test coverage now requires PyGI (PyGObject 3,
1570 "import gi.repository.GObject") instead of the
1571 obsolete PyGObject 2 ("import gobject")
1575 • add GLib-style "installed tests" (fd.o #88810, Simon McVittie)
1577 • better regression test coverage, including systemd activation
1578 (fd.o #57952, #88810; Simon McVittie)
1582 • fatal errors correctly make the dbus-daemon exit even if <syslog/> is
1583 turned off (fd.o #88808, Simon McVittie)
1585 • TCP sockets on Windows no longer fail to listen approximately 1 time
1586 in 256, caused by a logic error that should have always made it fail but
1587 was mitigated by incorrect endianness for the port number
1588 (fd.o #87999, Ralf Habacker)
1590 • fix some Windows build failures (fd.o #88009, #88010; Ralf Habacker)
1592 • on Windows, allow up to 8K connections to the dbus-daemon instead of the
1593 previous 64, completing a previous fix which only worked under
1594 Autotools (fd.o #71297, Ralf Habacker)
1596 • on Windows, if the IP family is unspecified only use IPv4,
1597 to mitigate IPv6 not working correctly (fd.o #87999, Ralf Habacker)
1599 • fix some unlikely memory leaks on OOM (fd.o #88087, Simon McVittie)
1601 • lcov code coverage analysis works again (fd.o #88808, Simon McVittie)
1603 • fix an unused function error with --disable-embedded-tests (fd.o #87837,
1606 D-Bus 1.9.6 (2015-01-05)
1609 The “I do have a bread knife” release.
1613 • Do not allow calls to UpdateActivationEnvironment from uids other than
1614 the uid of the dbus-daemon. If a system service installs unsafe
1615 security policy rules that allow arbitrary method calls
1616 (such as CVE-2014-8148) then this prevents memory consumption and
1617 possible privilege escalation via UpdateActivationEnvironment.
1619 We believe that in practice, privilege escalation here is avoided
1620 by dbus-daemon-launch-helper sanitizing its environment; but
1621 it seems better to be safe.
1623 • Do not allow calls to UpdateActivationEnvironment or the Stats interface
1624 on object paths other than /org/freedesktop/DBus. Some system services
1625 install unsafe security policy rules that allow arbitrary method calls
1626 to any destination, method and interface with a specified object path;
1627 while less bad than allowing arbitrary method calls, these security
1628 policies are still harmful, since dbus-daemon normally offers the
1629 same API on all object paths and other system services might behave
1634 • Add missing initialization so GetExtendedTcpTable doesn't crash on
1635 Windows Vista SP0 (fd.o #77008, Илья А. Ткаченко)
1637 D-Bus 1.9.4 (2014-11-24)
1640 The “extra-sturdy caramel” release.
1644 • Partially revert the CVE-2014-3639 patch by increasing the default
1645 authentication timeout on the system bus from 5 seconds back to 30
1646 seconds, since this has been reported to cause boot regressions for
1647 some users, mostly with parallel boot (systemd) on slower hardware.
1649 On fast systems where local users are considered particularly hostile,
1650 administrators can return to the 5 second timeout (or any other value
1651 in milliseconds) by saving this as /etc/dbus-1/system-local.conf:
1654 <limit name="auth_timeout">5000</limit>
1657 (fd.o #86431, Simon McVittie)
1659 • Add a message in syslog/the Journal when the auth_timeout is exceeded
1660 (fd.o #86431, Simon McVittie)
1662 • Send back an AccessDenied error if the addressed recipient is not allowed
1663 to receive a message (and in builds with assertions enabled, don't
1664 assert under the same conditions). (fd.o #86194, Jacek Bukarewicz)
1666 D-Bus 1.9.2 (2014-11-10)
1669 The “structurally unsound flapjack” release.
1673 • Increase dbus-daemon's RLIMIT_NOFILE rlimit to 65536
1674 so that CVE-2014-3636 part A cannot exhaust the system bus'
1675 file descriptors, completing the incomplete fix in 1.8.8.
1676 (CVE-2014-7824, fd.o #85105; Simon McVittie, Alban Crequy)
1680 • D-Bus Specification version 0.25
1681 · new value 'const' for EmitsChangedSignal annotation
1682 (fd.o #72958, Lennart Poettering)
1683 · new ALLOW_INTERACTIVE_AUTHORIZATION flag, for PolicyKit and similar
1684 (fd.o #83449; Lennart Poettering, Simon McVittie)
1685 · annotate table of types with reserved/basic/container, and for
1686 basic types, fixed/string-like
1687 · clarify arbitrary limits by quoting them in mebibytes
1689 • New API: add accessors for the ALLOW_INTERACTIVE_AUTHORIZATION flag
1690 (fd.o #83449, Simon McVittie)
1692 • Add dbus-test-tool, a D-Bus swiss army knife with multiple subcommands,
1693 useful for debugging and performance testing:
1694 · dbus-test-tool spam: send repeated messages
1695 · dbus-test-tool echo: send an empty reply for all method calls
1696 · dbus-test-tool black-hole: do not reply to method calls
1697 (fd.o #34140; Alban Crequy, Simon McVittie, Will Thompson)
1699 • Add support for process ID in credentials-passing on NetBSD
1700 (fd.o #69702, Patrick Welche)
1702 • Add an example script to find potentially undesired match rules
1703 (fd.o #84598, Alban Crequy)
1705 • Document the central assumption that makes our use of credentials-passing
1706 secure (fd.o #83499, Simon McVittie)
1708 • Replace the dbus-glib section of the tutorial with a GDBus recommendation,
1709 and add some links to GDBus and QtDBus documentation (fd.o #25140,
1714 • Use a less confusing NoReply message when disconnected with a reply pending
1715 (fd.o #76112, Simon McVittie)
1717 • Make the .pc file relocatable by letting pkg-config do all variable
1718 expansion itself (fd.o #75858, Руслан Ижбулатов)
1720 • Fix a build failure on platforms with kqueue, which regressed in 1.9.0
1721 (fd.o #85563, Patrick Welche)
1723 • Consistently save errno after socket calls (fd.o #83625, Simon McVittie)
1725 • In dbus-spawn, when the grandchild process exits due to a failed exec(),
1726 do not lose the exec() errno (fd.o #24821, Simon McVittie)
1728 • Do not fail the tests if a parent process has leaked non-close-on-exec
1729 file descriptors to us (fd.o #73689, fd.o #83899; Simon McVittie)
1731 • Do not fail the tests on Unix platforms with incomplete
1732 credentials-passing support, but do fail if we can't pass credentials
1733 on a platform where it is known to work: Linux, FreeBSD, OpenBSD, NetBSD
1734 (fd.o #69702, Simon McVittie)
1736 • Detect accept4, dirfd, inotify_init1, pipe2, and Unix fd passing
1737 when building with cmake, and expand test coverage there
1738 (fd.o #73689; Ralf Habacker, Simon McVittie)
1740 D-Bus 1.9.0 (2014-10-01)
1743 The “tiered cheeses” release.
1747 • Support for the systemd: (LISTEN_FDS) pseudo-transport on Linux now
1748 requires either the libsystemd or libsd-daemon shared library, dropping the
1749 embedded convenience copy of sd-daemon (fd.o #71818, Simon)
1751 Build-time configuration changes:
1753 • The Stats interface is now enabled by default, and locked-down to
1754 root-only on the system bus. Configure with --disable-stats
1755 to disable it altogether on memory- or disk-constrained systems,
1756 or see ${docdir}/examples/ to open it up to non-root users on the
1757 system bus or restrict access on the session bus.
1758 (fd.o #80759; Simon McVittie, Alban Crequy)
1760 • The CMake build system now builds the same shared library name as Autotools
1761 on at least Linux and Windows:
1762 - on Linux (and perhaps other Unix platforms), it previously built
1763 libdbus-1.so, but now builds libdbus-1.so.3.* with development
1764 symlink libdbus-1.so and SONAME/symlink libdbus-1.so.3
1765 - on Windows, it previously built either libdbus-1.dll (release) or
1766 libdbus-1d.dll (debug), but now builds libdbus-1-3.dll, copied to
1767 libdbus-1.dll for compatibility with older applications.
1768 (fd.o #74117, Ralf Habacker)
1772 • D-Bus Specification version 0.24
1773 · document how to quote match rules (fd.o #24307, Simon McVittie)
1774 · explicitly say that most message types never expect a reply
1775 regardles of whether they have NO_REPLY_EXPECTED
1776 (fd.o #75749, Simon McVittie)
1778 • on Unix platforms, disable Nagle's algorithm on TCP connections to improve
1779 initial latency (fd.o #75544, Matt Hoosier)
1781 • use backtrace() if it is in -lexecinfo instead of libc, as on NetBSD
1782 (fd.o #69702, Patrick Welche)
1784 • in dbus-monitor, print more information about file descriptors
1785 (fd.o #80603, Alban Crequy)
1787 • do not install system bus configuration if built for Windows
1788 (fd.o #83583; Ralf Habacker, Simon McVittie)
1790 • Add GetAllMatchRules to the Stats interface (fd.o #24307, Alban Crequy)
1792 • Add a regression test for file descriptor passing (fd.o #83622,
1797 • fix an incorrect error message if a Unix socket path is too long
1798 (fd.o #73887, Antoine Jacoutot)
1800 • in an MSYS/Cygwin environment, pass Unix-style filenames to xmlto,
1801 fixing documentation generation (fd.o #75860, Руслан Ижбулатов)
1803 • in Unix with X11, avoid giving dbus-launch a misleading argv[0]
1804 in ps(1) (fd.o #69716, Chengwei Yang)
1806 • avoid calling poll() with timeout < -1, which is considered invalid
1807 on FreeBSD and NetBSD (fd.o #78480, Jaap Boender)
1809 • be portable to BSD-derived platforms where O_CLOEXEC is unavailable in libc
1810 (like Mac OS X 10.6), or available in libc but unsupported by the kernel
1811 (fd.o #77032; rmvsxop, OBATA Akio, Patrick Welche)
1813 • Fix include path for test/internal/*.c with cmake (Ralf Habacker)
1815 • Documentation improvements
1816 (fd.o #80795, #84313; Thomas Haller, Sebastian Rasmussen)
1818 • in dbus-monitor, do not leak file descriptors that we have monitored
1819 (fd.o #80603, Alban Crequy)
1821 • Set the close-on-exec flag for the inotify file descriptor, even
1822 if built with CMake or older libc (fd.o #73689, Simon McVittie)
1824 • Remove some LGPL code from the Windows dbus-daemon
1825 (fd.o #57272, Ralf Habacker)
1827 D-Bus 1.8.8 (2014-09-16)
1830 The "smashy smashy egg man" release.
1834 • Do not accept an extra fd in the padding of a cmsg message, which
1835 could lead to a 4-byte heap buffer overrun.
1836 (CVE-2014-3635, fd.o #83622; Simon McVittie)
1838 • Reduce default for maximum Unix file descriptors passed per message
1839 from 1024 to 16, preventing a uid with the default maximum number of
1840 connections from exhausting the system bus' file descriptors under
1841 Linux's default rlimit. Distributors or system administrators with a
1842 more restrictive fd limit may wish to reduce these limits further.
1844 Additionally, on Linux this prevents a second denial of service
1845 in which the dbus-daemon can be made to exceed the maximum number
1846 of fds per sendmsg() and disconnect the process that would have
1848 (CVE-2014-3636, fd.o #82820; Alban Crequy)
1850 • Disconnect connections that still have a fd pending unmarshalling after
1851 a new configurable limit, pending_fd_timeout (defaulting to 150 seconds),
1852 removing the possibility of creating an abusive connection that cannot be
1853 disconnected by setting up a circular reference to a connection's
1855 (CVE-2014-3637, fd.o #80559; Alban Crequy)
1857 • Reduce default for maximum pending replies per connection from 8192 to 128,
1858 mitigating an algorithmic complexity denial-of-service attack
1859 (CVE-2014-3638, fd.o #81053; Alban Crequy)
1861 • Reduce default for authentication timeout on the system bus from
1862 30 seconds to 5 seconds, avoiding denial of service by using up
1863 all unauthenticated connection slots; and when all unauthenticated
1864 connection slots are used up, make new connection attempts block
1865 instead of disconnecting them.
1866 (CVE-2014-3639, fd.o #80919; Alban Crequy)
1870 • Check for libsystemd from systemd >= 209, falling back to
1871 the older separate libraries if not found (Umut Tezduyar Lindskog,
1874 • On Linux, use prctl() to disable core dumps from a test executable
1875 that deliberately raises SIGSEGV to test dbus-daemon's handling
1876 of that condition (fd.o #83772, Simon McVittie)
1878 • Fix compilation with --enable-stats (fd.o #81043, Gentoo #507232;
1881 • Improve documentation for running tests on Windows (fd.o #41252,
1884 D-Bus 1.8.6 (2014-06-02)
1889 • On Linux ≥ 2.6.37-rc4, if sendmsg() fails with ETOOMANYREFS, silently drop
1890 the message. This prevents an attack in which a malicious client can
1891 make dbus-daemon disconnect a system service, which is a local
1893 (fd.o #80163, CVE-2014-3532; Alban Crequy)
1895 • Track remaining Unix file descriptors correctly when more than one
1896 message in quick succession contains fds. This prevents another attack
1897 in which a malicious client can make dbus-daemon disconnect a system
1899 (fd.o #79694, fd.o #80469, CVE-2014-3533; Alejandro Martínez Suárez,
1900 Simon McVittie, Alban Crequy)
1904 • When dbus-launch --exit-with-session starts a dbus-daemon but then cannot
1905 attach to a session, kill the dbus-daemon as intended
1906 (fd.o #74698, Роман Донченко)
1908 D-Bus 1.8.4 (2014-06-10)
1913 • Alban Crequy at Collabora Ltd. discovered and fixed a denial-of-service
1914 flaw in dbus-daemon, part of the reference implementation of D-Bus.
1915 Additionally, in highly unusual environments the same flaw could lead to
1916 a side channel between processes that should not be able to communicate.
1917 (CVE-2014-3477, fd.o #78979)
1919 D-Bus 1.8.2 (2014-04-30)
1922 The “nobody wants red” release.
1926 • in the CMake build system, add some hints for Linux users cross-compiling
1927 Windows D-Bus binaries to be able to run tests under Wine
1928 (fd.o #41252, Ralf Habacker)
1930 • add Documentation key to dbus.service (fd.o #77447, Cameron Norman)
1934 • in "dbus-uuidgen --ensure", try to copy systemd's /etc/machine-id
1935 to /var/lib/dbus/machine-id instead of generating an entirely new ID
1936 (fd.o #77941, Simon McVittie)
1938 • if dbus-launch receives an X error very quickly, do not kill
1939 unrelated processes (fd.o #74698, Роман Донченко)
1941 • on Windows, allow up to 8K connections to the dbus-daemon, instead of the
1942 previous 64 (fd.o #71297; Cristian Onet, Ralf Habacker)
1944 • cope with \r\n newlines in regression tests, since on Windows,
1945 dbus-daemon.exe uses text mode (fd.o #75863, Руслан Ижбулатов)
1947 D-Bus 1.8.0 (2014-01-20)
1950 The “Wolverine distrusts my printer” release.
1952 This starts a new stable branch. The 1.6.x branch is now considered to be
1953 outdated, and will only receive fixes for serious bugs such as security
1954 flaws. The 1.4.x and 1.2.x branches no longer have upstream support and
1955 are unlikely to get any more releases, but if distributors still need to
1956 support them, please share security patches via upstream.
1958 Summary of changes since 1.6.x:
1960 • libdbus always behaves as if dbus_threads_init_default() had been called
1961 (thread-safety by default)
1962 • new dbus-run-session tool, replacing certain misuses of dbus-launch
1963 • dbus-monitor can talk to outdated versions of dbus-daemon again
1964 • new org.freedesktop.DBus.GetConnectionCredentials method
1965 • GetConnectionUnixProcessID also works correctly on Windows, returning
1966 the Windows process ID
1967 • GetConnectionWindowsSID returns the correct SID on Windows
1968 • expat is required, libxml2 can no longer be used as a substitute
1969 • the userDB cache is required, and cannot be disabled
1970 • a 64-bit integer type (either int, long, long long or _int64) is required
1971 • better systemd-journald integration on Linux
1972 • fixed long-standing fd and array leaks when failing to parse a message
1973 • fixed referenced-but-never-freed parent nodes (effectively memory leaks)
1974 when using certain object-path allocation patterns, notably in Avahi
1975 • better defaults for Windows support
1976 • better CMake support
1977 • better portability to mingw32, FreeBSD, NetBSD, QNX and Hurd
1978 • the source language for the man pages is now Docbook XML
1980 Enhancements since 1.7.10:
1982 • Enhance the CMake build system to check for GLib and compile/run
1983 a subset of the regression tests (fd.o #41252, #73495; Ralf Habacker)
1987 • don't rely on va_copy(), use DBUS_VA_COPY() wrapper (fd.o #72840,
1990 • fix compilation of systemd journal support on older systemd versions where
1991 sd-journal.h doesn't include syslog.h (fd.o #73455, Ralf Habacker)
1993 • fix compilation on older MSVC versions by including stdlib.h
1994 (fd.o #73455, Ralf Habacker)
1996 • Allow <allow_anonymous/> to appear in an included configuration file
1997 (fd.o #73475, Matt Hoosier)
1999 Test behaviour changes since 1.7.10:
2001 • If the tests crash with an assertion failure, they no longer default to
2002 blocking for a debugger to be attached. Set DBUS_BLOCK_ON_ABORT in the
2003 environment if you want the old behaviour.
2005 • To improve debuggability, the dbus-daemon and dbus-daemon-eavesdrop tests
2006 can be run with an external dbus-daemon by setting
2007 DBUS_TEST_DAEMON_ADDRESS in the environment. Test-cases that require
2008 an unusually-configured dbus-daemon are skipped.
2010 D-Bus 1.7.10 (2014-01-06)
2013 The “weighted companion cube” release.
2015 This is a release candidate for D-Bus 1.8.
2017 D-Bus Specification 0.23:
2019 • don't require messages with no INTERFACE to be dispatched
2020 (fd.o #68597, Simon McVittie)
2022 • document "tcp:bind=..." and "nonce-tcp:bind=..." (fd.o #72301,
2025 • define "listenable" and "connectable" addresses, and discuss
2026 the difference (fd.o #61303, Simon McVittie)
2030 • support printing Unix file descriptors in dbus-send, dbus-monitor
2031 (fd.o #70592, Robert Ancell)
2033 • don't install systemd units if --disable-systemd is given
2034 (fd.o #71818, Chengwei Yang)
2038 • don't leak memory on out-of-memory while listing activatable or
2039 active services (fd.o #71526, Radoslaw Pajak)
2041 • fix undefined behaviour in a regression test (fd.o #69924, DreamNik)
2043 • escape Unix socket addresses correctly (fd.o #46013, Chengwei Yang)
2045 • on SELinux systems, don't assume that SECCLASS_DBUS, DBUS__ACQUIRE_SVC
2046 and DBUS__SEND_MSG are numerically equal to their values in the
2047 reference policy (fd.o #88719, osmond sun)
2049 • define PROCESS_QUERY_LIMITED_INFORMATION if missing from MinGW < 4 headers
2050 (fd.o #71366, Matt Fischer)
2052 • define WIN32_LEAN_AND_MEAN to avoid conflicts between winsock.h and
2053 winsock2.h (fd.o #71405, Matt Fischer)
2055 • do not return failure from _dbus_read_nonce() with no error set,
2056 preventing a potential crash (fd.o #72298, Chengwei Yang)
2058 • on BSD systems, avoid some O(1)-per-process memory and fd leaks in kqueue,
2059 preventing test failures (fd.o #69332, fd.o #72213; Chengwei Yang)
2061 • fix warning spam on Hurd by not trying to set SO_REUSEADDR on Unix sockets,
2062 which doesn't do anything anyway on at least Linux and FreeBSD
2063 (fd.o #69492, Simon McVittie)
2065 • fix use of TCP sockets on FreeBSD and Hurd by tolerating EINVAL from
2066 sendmsg() with SCM_CREDS (retrying with plain send()), and looking
2067 for credentials more correctly (fd.o #69492, Simon McVittie)
2069 • ensure that tests run with a temporary XDG_RUNTIME_DIR to avoid
2070 getting mixed up in XDG/systemd "user sessions" (fd.o #61301,
2073 • refresh cached policy rules for existing connections when bus
2074 configuration changes (fd.o #39463, Chengwei Yang)
2076 D-Bus 1.7.8 (2013-11-01)
2079 The “extreme hills” release.
2083 • If systemd support is enabled, libsystemd-journal is now required.
2087 • When activating a non-systemd service under systemd, annotate its
2088 stdout/stderr with its bus name in the Journal. Known limitation:
2089 because the socket is opened before forking, the process will still be
2090 logged as if it had dbus-daemon's process ID and user ID.
2091 (fd.o #68559, Chengwei Yang)
2093 • Document more configuration elements in dbus-daemon(1)
2094 (fd.o #69125, Chengwei Yang)
2098 • Don't leak string arrays or fds if dbus_message_iter_get_args_valist()
2099 unpacks them and then encounters an error (fd.o #21259, Chengwei Yang)
2101 • If compiled with libaudit, retain CAP_AUDIT_WRITE so we can write
2102 disallowed method calls to the audit log, fixing a regression in 1.7.6
2103 (fd.o #49062, Colin Walters)
2105 • path_namespace='/' in match rules incorrectly matched nothing; it
2106 now matches everything. (fd.o #70799, Simon McVittie)
2108 D-Bus 1.7.6 (2013-10-09)
2111 The “CSI Shrewsbury” release.
2113 Build-time configuration changes:
2115 • Directory change notification via dnotify on Linux is no longer
2116 supported; it hadn't compiled successfully since 2010 in any case.
2117 If you don't have inotify (Linux) or kqueue (*BSD), you will need
2118 to send SIGHUP to the dbus-daemon when its configuration changes.
2119 (fd.o #33001, Chengwei Yang)
2121 • Compiling with --disable-userdb-cache is no longer supported;
2122 it didn't work since at least 2008, and would lead to an extremely
2123 slow dbus-daemon even it worked. (fd.o #15589, #17133, #66947;
2126 • The DBUS_DISABLE_ASSERTS CMake option didn't actually disable most
2127 assertions. It has been renamed to DBUS_DISABLE_ASSERT to be consistent
2128 with the Autotools build system. (fd.o #66142, Chengwei Yang)
2130 • --with-valgrind=auto enables Valgrind instrumentation if and only if
2131 valgrind headers are available. The default is still --with-valgrind=no.
2132 (fd.o #56925, Simon McVittie)
2136 • Platforms with no 64-bit integer type are no longer supported.
2137 (fd.o #65429, Simon McVittie)
2139 • GNU make is now (documented to be) required. (fd.o #48277, Simon McVittie)
2141 • Full test coverage no longer requires dbus-glib, although the tests do not
2142 exercise the shared library (only a static copy) if dbus-glib is missing.
2143 (fd.o #68852, Simon McVittie)
2147 • D-Bus Specification 0.22
2148 · Document GetAdtAuditSessionData() and
2149 GetConnectionSELinuxSecurityContext() (fd.o #54445, Simon)
2150 · Fix example .service file (fd.o #66481, Chengwei Yang)
2151 · Don't claim D-Bus is "low-latency" (lower than what?), just
2152 give factual statements about it supporting async use
2153 (fd.o #65141, Justin Lee)
2154 · Document the contents of .service files, and the fact that
2155 system services' filenames are constrained
2156 (fd.o #66608; Simon McVittie, Chengwei Yang)
2158 • Be thread-safe by default on all platforms, even if
2159 dbus_threads_init_default() has not been called. For compatibility with
2160 older libdbus, library users should continue to call
2161 dbus_threads_init_default(): it is harmless to do so.
2162 (fd.o #54972, Simon McVittie)
2164 • Add GetConnectionCredentials() method (fd.o #54445, Simon)
2166 • New API: dbus_setenv(), a simple wrapper around setenv().
2167 Note that this is not thread-safe. (fd.o #39196, Simon)
2169 • Add dbus-send --peer=ADDRESS (connect to a given peer-to-peer connection,
2170 like --address=ADDRESS in previous versions) and dbus-send --bus=ADDRESS
2171 (connect to a given bus, like dbus-monitor --address=ADDRESS).
2172 dbus-send --address still exists for backwards compatibility,
2173 but is no longer documented. (fd.o #48816, Andrey Mazo)
2176 · "dbus-daemon --nofork" is allowed on Windows again. (fd.o #68852,
2181 • Avoid an infinite busy-loop if a signal interrupts waitpid()
2182 (fd.o #68945, Simon McVittie)
2184 • Clean up memory for parent nodes when objects are unexported
2185 (fd.o #60176, Thomas Fitzsimmons)
2187 • Make dbus_connection_set_route_peer_messages(x, FALSE) behave as
2188 documented. Previously, it assumed its second parameter was TRUE.
2189 (fd.o #69165, Chengwei Yang)
2191 • Escape addresses containing non-ASCII characters correctly
2192 (fd.o #53499, Chengwei Yang)
2194 • Document <servicedir> search order correctly (fd.o #66994, Chengwei Yang)
2196 • Don't crash on "dbus-send --session / x.y.z" which regressed in 1.7.4.
2197 (fd.o #65923, Chengwei Yang)
2199 • If malloc() returns NULL in _dbus_string_init() or similar, don't free
2200 an invalid pointer if the string is later freed (fd.o #65959, Chengwei Yang)
2202 • If malloc() returns NULL in dbus_set_error(), don't va_end() a va_list
2203 that was never va_start()ed (fd.o #66300, Chengwei Yang)
2205 • fix build failure with --enable-stats (fd.o #66004, Chengwei Yang)
2207 • fix a regression test on platforms with strict alignment (fd.o #67279,
2210 • Avoid calling function parameters "interface" since certain Windows headers
2211 have a namespace-polluting macro of that name (fd.o #66493, Ivan Romanov)
2213 • Assorted Doxygen fixes (fd.o #65755, Chengwei Yang)
2215 • Various thread-safety improvements to static variables (fd.o #68610,
2218 • Make "make -j check" work (fd.o #68852, Simon McVittie)
2220 • Fix a NULL pointer dereference on an unlikely error path
2221 (fd.o #69327, Sviatoslav Chagaev)
2223 • Improve valgrind memory pool tracking (fd.o #69326,
2226 • Don't over-allocate memory in dbus-monitor (fd.o #69329,
2229 • dbus-monitor can monitor dbus-daemon < 1.5.6 again
2230 (fd.o #66107, Chengwei Yang)
2233 · If accept4() fails with EINVAL, as it can on older Linux kernels
2234 with newer glibc, try accept() instead of going into a busy-loop.
2235 (fd.o #69026, Chengwei Yang)
2236 · If socket() or socketpair() fails with EINVAL or EPROTOTYPE,
2237 for instance on Hurd or older Linux with a new glibc, try without
2238 SOCK_CLOEXEC. (fd.o #69073; Pino Toscano, Chengwei Yang)
2239 · Fix a file descriptor leak on an error code path.
2240 (fd.o #69182, Sviatoslav Chagaev)
2241 · dbus-run-session: clear some unwanted environment variables
2242 (fd.o #39196, Simon)
2243 · dbus-run-session: compile on FreeBSD (fd.o #66197, Chengwei Yang)
2244 · Don't fail the autolaunch test if there is no DISPLAY (fd.o #40352, Simon)
2245 · Use dbus-launch from the builddir for testing, not the installed copy
2246 (fd.o #37849, Chengwei Yang)
2247 · Fix compilation if writev() is unavailable (fd.o #69409,
2249 · Remove broken support for LOCAL_CREDS credentials passing, and
2250 document where each credential-passing scheme is used (fd.o #60340,
2252 · Make autogen.sh work on *BSD by not assuming GNU coreutils functionality
2253 (fd.o #35881, #69787; Chengwei Yang)
2254 · dbus-monitor: be portable to NetBSD (fd.o #69842, Chengwei Yang)
2255 · dbus-launch: stop using non-portable asprintf (fd.o #37849, Simon)
2256 · Improve error reporting from the setuid activation helper (fd.o #66728,
2260 · Remove unavailable command-line options from 'dbus-daemon --help'
2261 (fd.o #42441, Ralf Habacker)
2262 · Add support for looking up local TCPv4 clients' credentials on
2263 Windows XP via the undocumented AllocateAndGetTcpExTableFromStack
2264 function (fd.o #66060, Ralf Habacker)
2265 · Fix insufficient dependency-tracking (fd.o #68505, Simon McVittie)
2266 · Don't include wspiapi.h, fixing a compiler warning (fd.o #68852,
2270 · add DBUS_ENABLE_ASSERT, DBUS_ENABLE_CHECKS for less confusing
2271 conditionals (fd.o #66142, Chengwei Yang)
2272 · improve verbose-mode output (fd.o #63047, Colin Walters)
2273 · consolidate Autotools and CMake build (fd.o #64875, Ralf Habacker)
2274 · fix various unused variables, unusual build configurations
2275 etc. (fd.o #65712, #65990, #66005, #66257, #69165, #69410, #70218;
2276 Chengwei Yang, Vasiliy Balyasnyy)
2278 D-Bus 1.7.4 (2013-06-13)
2281 The “but is your thread-safety thread-safe?” release.
2285 • CVE-2013-2168: Fix misuse of va_list that could be used as a denial
2286 of service for system services. Vulnerability reported by Alexandru Cornea.
2291 • The Windows version of libdbus now contains a C++ source file, used
2292 to provide global initialization when the library is loaded.
2293 gcc (mingw*) users should ensure that g++ is also installed.
2295 • The libxml2-based configuration reader (which hasn't worked for 2.5 years,
2296 and was never the recommended option) has been removed. Expat is now a
2301 • It should now be safe to call dbus_threads_init_default() from any thread,
2302 at any time. Authors of loadable modules and plugins that use libdbus
2303 should consider doing so during initialization.
2304 (fd.o #54972, Simon McVittie)
2306 • Improve dbus-send documentation and command-line parsing (fd.o #65424,
2310 · dbus-run-session: experimental new tool to start a temporary D-Bus
2311 session, e.g. for regression tests or a text console, replacing
2312 certain uses of dbus-launch which weren't really correct
2313 (fd.o #39196, Simon)
2317 • In dbus-daemon, don't crash if a .service file starts with key=value
2318 (fd.o #60853, Chengwei Yang)
2321 · Fix a crash similar to CVE-2013-2168 the first time we try to use syslog
2322 on a platform not defining LOG_PERROR, such as Solaris or QNX.
2323 This regressed in 1.7.0. (Simon)
2324 · Fix an assertion failure if we try to activate systemd services before
2325 systemd connects to the bus (fd.o #50199, Chengwei Yang)
2326 · Avoid compiler warnings for ignoring the return from write()
2330 · Under cmake, install runtime libraries (DLLs) into bin/ instead of lib/
2331 so that Windows finds them (fd.o #59733, Ralf Habacker)
2333 D-Bus 1.7.2 (2013-04-25)
2336 The “only partially opaque” release.
2338 Configuration changes:
2340 • On non-QNX Unix platforms, the default limit on fds per message in the
2341 session bus configuration has reduced from 4096 to 1024. The default
2342 limit used on the system bus was already 1024. On QNX, both limits are
2343 reduced further, to 128.
2347 • D-Bus Specification 0.21
2348 · Following Unicode Corrigendum #9, the noncharacters U+nFFFE, U+nFFFF,
2349 U+FDD0..U+FDEF are allowed in UTF-8 strings again. (fd.o #63072,
2354 • Diagnose incorrect use of dbus_connection_get_data() with negative slot
2355 (i.e. before allocating the slot) rather than returning junk
2356 (fd.o #63127, Dan Williams)
2358 • Fix a cmake build regression since 1.7.0 (fd.o #63682; Ralf Habacker,
2362 · On Linux, link successfully with glibc 2.17 (fd.o #63166, Simon McVittie)
2363 · Under systemd, log to syslog only, not stderr, avoiding duplication
2364 (fd.o #61399, #39987; Colin Walters, Dagobert Michelsen)
2365 · Under systemd, remove unnecessary dependency on syslog.socket
2366 (fd.o #63531, Cristian Rodríguez)
2367 · Include alloca.h for alloca() if available, fixing compilation on
2368 Solaris 10 (fd.o #63071, Dagobert Michelsen)
2369 · Allow use of systemd-logind without the rest of systemd
2370 (fd.o #62585, Martin Pitt)
2371 · When built with CMake, link to librt and use the right path for
2372 meinproc's XSLT stylesheets (fd.o #61637, Ralf Habacker)
2373 · Reduce the default limit on number of fds per message to 128 under
2374 QNX, working around an arbitrary OS limit (fd.o #61176, Matt Fischer)
2377 · Do not claim that all bus clients have the dbus-daemon's credentials;
2378 pick up local TCPv4 clients' credentials (process ID and security
2379 identifier, i.e. user) using GetExtendedTcpTable() (fd.o #61787,
2382 D-Bus 1.7.0 (2013-02-22)
2385 The "Disingenuous Assertions" release.
2387 This is a new development release, starting the 1.7.x branch. D-Bus 1.6
2388 remains the recommended version for long-term-supported distributions
2389 or the upcoming GNOME 3.8 release.
2391 Build-time configuration changes:
2393 • The --with-dbus-session-bus-default-address configure option is no longer
2394 supported. Use the new --with-dbus-session-bus-connect-address and
2395 --with-dbus-session-bus-listen-address options instead. On Windows, you
2396 usually want them to have the same argument; on Unix, the defaults are
2399 • Similarly, the DBUS_SESSION_BUS_DEFAULT_ADDRESS CMake variable is no longer
2400 supported; use the new DBUS_SESSION_BUS_LISTEN_ADDRESS and
2401 DBUS_SESSION_BUS_CONNECT_ADDRESS variables instead.
2403 • cmake/cross-compile.sh has been removed. Instead, please use a
2404 cross-toolchain file (-DCMAKE_TOOLCHAIN_FILE) as documented at
2405 <http://www.vtk.org/Wiki/CMake_Cross_Compiling>; or use Autotools
2406 as documented in "info automake Cross-Compilation", and set
2407 PKG_CONFIG_PATH appropriately.
2411 • Man pages now require xmlto (or either xmlto or meinproc, if using CMake).
2412 • man2html is no longer used.
2416 • D-Bus Specification 0.20
2417 · actually say that /org/freedesktop/DBus is the object that
2418 implements o.fd.DBus (fd.o #51865, Colin Walters)
2419 · various reorganisation for better clarity (fd.o #38252, Simon McVittie)
2420 · stop claiming that all basic types work just like INT32 (strings don't!)
2422 • The "source code" for the man pages is now Docbook XML, eliminating
2423 the outdated duplicate copies used when building with CMake.
2424 (fd.o #59805; Ralf Habacker, Simon McVittie)
2428 • In the activation helper, when compiled for tests, do not reset the system
2429 bus address, fixing the regression tests. (fd.o #52202, Simon)
2431 • Fix building with Valgrind 3.8, at the cost of causing harmless warnings
2432 with Valgrind 3.6 on some compilers (fd.o #55932, Arun Raghavan)
2434 • Merge <servicehelper> from system-local.conf if necessary (fd.o #51560,
2437 • Under CMake, prefer xmlto over meinproc (fd.o #59733, Ralf Habacker)
2439 • Stop duplicating CMake's own logic to find libexpat
2440 (fd.o #59733, Ralf Habacker)
2442 • Don't assume CMake host and build system are the same (fd.o #59733,
2445 • Avoid deprecation warnings for GLib 2.35 (fd.o #59971, Simon McVittie)
2448 · Check for functions in libpthread correctly, fixing compilation on
2449 (at least) OpenBSD (fd.o #47239, Simon)
2450 · Don't leak temporary fds pointing to /dev/null (fd.o #56927,
2452 · Update sd-daemon.[ch] from systemd (fd.o #60681)
2453 · Add partial support for QNX (fd.o #60339, fd.o #61176; Matt Fischer)
2456 · The default session bus listening and connecting address is now
2457 "autolaunch:", which makes D-Bus on Windows interoperate with itself
2458 and GDBus "out of the box". Use the configure options and cmake variables
2459 described above if you require a different autolaunch scope.
2460 (fd.o #38201, Simon McVittie)
2461 · Avoid a CMake warning under Cygwin (fd.o #59401, Ralf Habacker)
2463 • Create session.d, system.d directories under CMake (fd.o #41319,
2466 D-Bus 1.6.8 (2012-09-28)
2469 The "Fix one thing, break another" release.
2471 • Follow up to CVE-2012-3524: The additional hardening
2472 work to use __secure_getenv() as a followup to bug #52202
2473 broke certain configurations of gnome-keyring. Given
2474 the difficulty of making this work without extensive
2475 changes to gnome-keyring, use of __secure_getenv() is
2478 D-Bus 1.6.6 (2012-09-28)
2481 The "Clear the environment in your setuid binaries, please" release.
2483 • CVE-2012-3524: Don't access environment variables (fd.o #52202)
2484 Thanks to work and input from Colin Walters, Simon McVittie,
2485 Geoffrey Thomas, and others.
2487 · Fix compilation on Solaris (fd.o #53286, Jonathan Perkin)
2488 · Work around interdependent headers on OpenBSD by including sys/types.h
2489 before each use of sys/socket.h (fd.o #54418, Brad Smith)
2491 D-Bus 1.6.4 (2012-07-18)
2494 • Detect that users are "at the console" correctly when configured with
2495 a non-default path such as --enable-console-auth-dir=/run/console
2496 (fd.o #51521, Dave Reisner)
2498 • Remove an incorrect assertion from DBusTransport (fd.o #51657,
2501 • Make --enable-developer default to "no" (regression in 1.6.2;
2502 fd.o #51657, Simon McVittie)
2505 · Launch dbus-daemon correctly if its path contains a space
2506 (fd.o #49450, Wolfgang Baron)
2508 D-Bus 1.6.2 (2012-06-27)
2511 The "Ice Cabbage" release.
2513 • Change how we create /var/lib/dbus so it works under Automake >= 1.11.4
2514 (fd.o #51406, Simon McVittie)
2516 • Don't return from dbus_pending_call_set_notify with a lock held on OOM
2517 (fd.o #51032, Simon McVittie)
2519 • Disconnect "developer mode" (assertions, verbose mode etc.) from
2520 Automake maintainer mode. D-Bus developers should now configure with
2521 --enable-developer. Automake maintainer mode is now on by default;
2522 distributions can disable it with --disable-maintainer-mode.
2523 (fd.o #34671, Simon McVittie)
2525 • Automatically define DBUS_STATIC_BUILD in static-only Autotools builds,
2526 fixing linking when targeting Windows (fd.o #33973; william, Simon McVittie)
2529 · Check for libpthread under CMake on Unix (fd.o #47237, Simon McVittie)
2531 D-Bus 1.6.0 (2012-06-05)
2534 The “soul of this machine has improved” release.
2536 This version starts a new stable branch of D-Bus: only bug fixes will
2537 be accepted into 1.6.x. Other changes will now go to the 1.7.x branch.
2539 Summary of changes since 1.4.x:
2542 · PTHREAD_MUTEX_RECURSIVE on Unix
2543 · compiler support for 64-bit integers (int64_t or equivalent)
2545 • D-Bus Specification v0.19
2547 • New dbus-daemon features
2548 · <allow own_prefix="com.example.Service"/> rules allow the service to
2549 own names like com.example.Service.Instance3
2550 · optional systemd integration when checking at_console policies
2551 · --nopidfile option, mainly for use by systemd
2552 · path_namespace and arg0namespace may appear in match rules
2553 · eavesdropping is disabled unless the match rule contains eavesdrop=true
2556 · functions to validate various string types (dbus_validate_path() etc.)
2557 · dbus_type_is_valid()
2558 · DBusBasicValue, a union of every basic type
2561 · removed an unsafe reimplementation of recursive mutexes
2562 · dbus-daemon no longer busy-loops if it has far too many file descriptors
2563 · dbus-daemon.exe --print-address works on Windows
2564 · all the other bug fixes from 1.4.20
2566 • Other major implementation changes
2567 · on Linux, dbus-daemon uses epoll if supported, for better scalability
2568 · dbus_threads_init() ignores its argument and behaves like
2569 dbus_threads_init_default() instead
2570 · removed the per-connection link cache, improving dbus-daemon performance
2572 • Developer features
2573 · optional Valgrind instrumentation (--with-valgrind)
2574 · optional Stats interface on the dbus-daemon (--enable-stats)
2575 · optionally abort whenever malloc() fails (--enable-embedded-tests
2576 and export DBUS_MALLOC_CANNOT_FAIL=1)
2578 Changes since 1.5.12:
2580 • Be more careful about monotonic time vs. real time, fixing DBUS_COOKIE_SHA1
2581 spec-compliance (fd.o #48580, David Zeuthen)
2583 • Don't use install(1) within the source/build trees, fixing the build as
2584 non-root when using OpenBSD install(1) (fd.o #48217, Antoine Jacoutot)
2586 • Add missing commas in some tcp and nonce-tcp addresses, and remove
2587 an unused duplicate copy of the nonce-tcp transport in Windows builds
2588 (fd.o #45896, Simon McVittie)
2590 D-Bus 1.5.12 (2012-03-27)
2593 The “Big Book of Science” release.
2595 • Add public API to validate various string types:
2596 dbus_validate_path(), dbus_validate_interface(), dbus_validate_member(),
2597 dbus_validate_error_name(), dbus_validate_bus_name(), dbus_validate_utf8()
2598 (fd.o #39549, Simon McVittie)
2600 • Turn DBusBasicValue into public API so bindings don't need to invent their
2601 own "union of everything" type (fd.o #11191, Simon McVittie)
2603 • Enumerate data files included in the build rather than using find(1)
2604 (fd.o #33840, Simon McVittie)
2606 • Add support for policy rules like <allow own_prefix="com.example.Service"/>
2607 in dbus-daemon (fd.o #46273, Alban Crequy)
2610 · make dbus-daemon.exe --print-address (and --print-pid) work again
2611 on Win32, but not on WinCE (fd.o #46049, Simon McVittie)
2612 · fix duplicate case value when compiling against mingw-w64
2613 (fd.o #47321, Andoni Morales Alastruey)
2615 D-Bus 1.5.10 (2012-02-21)
2618 The "fire in Delerium" release.
2620 On Unix platforms, PTHREAD_MUTEX_RECURSIVE (as specified in POSIX 2008 Base
2621 and SUSv2) is now required.
2623 • D-Bus Specification 0.19:
2624 · Formally define unique connection names and well-known bus names,
2625 and document best practices for interface, bus, member and error names,
2626 and object paths (fd.o #37095, Simon McVittie)
2627 · Document the search path for session and system services on Unix, and
2628 where they should be installed by build systems (fd.o #21620, fd.o #35306;
2630 · Document the systemd transport (fd.o #35232, Lennart Poettering)
2632 • Make dbus_threads_init() use the same built-in threading implementation
2633 as dbus_threads_init_default(); the user-specified primitives that it
2634 takes as a parameter are now ignored (fd.o #43744, Simon McVittie)
2636 • Allow all configured auth mechanisms, not just one (fd.o #45106,
2639 • Improve cmake build system (Ralf Habacker):
2640 · simplify XML parser dependencies (fd.o #41027)
2641 · generate build timestamp (fd.o #41029)
2642 · only create batch files on Windows
2643 · fix option and cache syntax
2644 · add help-options target
2645 · share dbus-arch-deps.h.in with autotools rather than having our
2646 own version (fd.o #41033)
2648 • Build tests successfully with older GLib, as found in e.g. Debian 6
2649 (fd.o #41219, Simon McVittie)
2651 • Avoid use of deprecated GThread API (fd.o #44413, Martin Pitt)
2653 • Build documentation correctly if man2html doesn't support filenames on
2654 its command-line (fd.o #43875, Jack Nagel)
2656 • Improve test coverage. To get even more coverage, run the tests with
2657 DBUS_TEST_SLOW=1 (fd.o #38285, #42811; Simon McVittie)
2659 • Reduce the size of the shared library by moving functionality only used
2660 by dbus-daemon, tests etc. into their internal library and deleting
2661 unused code (fd.o #34976, #39759; Simon McVittie)
2663 • Add dbus-daemon --nopidfile option, overriding the configuration, for
2664 setups where the default configuration must include <pidfile/> to avoid
2665 breaking traditional init, but the pid file is in fact unnecessary; use
2666 it under systemd to improve startup time a bit (fd.o #45520,
2669 • Optionally (if configured --with-valgrind) add instrumentation to debug
2670 libdbus and associated tools more meaningfully under Valgrind
2671 (fd.o #37286, Simon McVittie)
2673 • Improve the dbus-send(1) man page (fd.o #14005, Simon McVittie)
2675 • Make dbus-protocol.h compatible with C++11 (fd.o #46147, Marc Mutz)
2677 • If tests are enabled and DBUS_MALLOC_CANNOT_FAIL is set in the environment,
2678 abort on failure to malloc() (like GLib does), to turn runaway memory leaks
2679 into a debuggable core-dump if a resource limit is applied (fd.o #41048,
2682 • Don't crash if realloc() returns NULL in a debug build (fd.o #41048,
2686 · Replace our broken reimplementation of recursive mutexes, which has
2687 been broken since 2006, with an ordinary pthreads recursive mutex
2688 (fd.o #43744; Sigmund Augdal, Simon McVittie)
2689 · Use epoll(7) for a more efficient main loop in Linux; equivalent patches
2690 welcomed for other OSs' equivalents like kqueue, /dev/poll, or Solaris
2691 event ports (fd.o #33337; Simon McVittie, Ralf Habacker)
2692 · When running under systemd, use it instead of ConsoleKit to check
2693 whether to apply at_console policies (fd.o #39609, Lennart Poettering)
2694 · Avoid a highly unlikely fd leak (fd.o #29881, Simon McVittie)
2695 · Don't close invalid fd -1 if getaddrinfo fails (fd.o #37258, eXeC001er)
2696 · Don't touch ~/.dbus and ~/.dbus-keyrings when running 'make installcheck'
2697 (fd.o #41218, Simon McVittie)
2698 · Stop pretending we respect XDG_DATA_DIRS for system services: the launch
2699 helper doesn't obey environment variables to avoid privilege escalation
2700 attacks, so make the system bus follow the same rules
2701 (fd.o #21620, Simon McVittie)
2704 · Find the dbus-daemon executable next to the shared library (fd.o #41558;
2705 Jesper Dam, Ralf Habacker)
2706 · Remove the faulty implementation of _dbus_condvar_wake_all (fd.o #44609,
2709 D-Bus 1.5.8 (2011-09-21)
2712 The "cross-metering" release.
2714 In addition to dead code removal and refactoring, this release contains all
2715 of the bugfixes from 1.4.16.
2717 • Clean up dead code, and make more warnings fatal in development builds
2718 (fd.o #39231, fd.o #41012; Simon McVittie)
2720 • If full test coverage is requested via --enable-tests, strictly require
2721 Python, pygobject and dbus-python, which are required by some tests; if not,
2722 and Python is missing, skip those tests rather than failing
2723 (fd.o #37847, Simon McVittie)
2725 • When using cmake, provide the same version-info API in the installed headers
2726 as for autotools (DBUS_VERSION, etc.) (fd.o #40905, Ralf Habacker)
2728 • Add a regression test for fd.o #38005 (fd.o #39836, Simon McVittie)
2730 • Make "NOCONFIGURE=1 ./autogen.sh" not run configure (Colin Walters)
2732 • Add _DBUS_STATIC_ASSERT and use it to check invariants (fd.o #39636,
2735 • Fix duplicates in authors list (Ralf Habacker)
2737 • Fix broken links from dbus-tutorial.html if $(htmldir) != $(docdir)
2738 (fd.o #39879, Chris Mayo)
2740 • Fix a small memory leak, and a failure to report errors, when updating
2741 a service file entry for activation (fd.o #39230, Simon McVittie)
2744 · Clean up (non-abstract) Unix sockets on bus daemon exit (fd.o #38656;
2745 Brian Cameron, Simon McVittie)
2746 · On systems that use libcap-ng but not systemd, drop supplemental groups
2747 when switching to the daemon user (Red Hat #726953, Steve Grubb)
2748 · Make the cmake build work again on GNU platforms (fd.o #29228,
2750 · Fix compilation on non-C99 systems that have inttypes.h but not stdint.h,
2751 like Solaris (fd.o #40313, Dagobert Michelsen)
2752 · Define CMSG_ALIGN, CMSG_LEN, CMSG_SPACE on Solaris < 10
2753 (fd.o #40235, Simon McVittie)
2754 · Cope with Unixes that don't have LOG_PERROR, like Solaris 10
2755 (fd.o #39987, Simon McVittie)
2756 · Cope with platforms whose vsnprintf violates both POSIX and C99, like
2757 Tru64, IRIX and HP-UX (fd.o #11668, Simon McVittie)
2760 · Fix compilation on MSVC, which doesn't understand "inline" with its
2761 C99 meaning (fd.o #40000; Ralf Habacker, Simon McVittie)
2762 · Fix misuse of GPid in test/dbus-daemon.c (fd.o #40003, Simon McVittie)
2763 · Fix cross-compilation to Windows with Automake (fd.o #40003, Simon McVittie)
2765 D-Bus 1.5.6 (2011-07-29)
2768 The "weird, gravy-like aftertaste" release.
2770 In addition to new features and refactoring, this release contains all of the
2771 bugfixes from 1.4.14.
2773 Potentially incompatible (Bustle and similar debugging tools will need
2774 changes to work as intended):
2776 • Do not allow match rules to "eavesdrop" (receive messages intended for a
2777 different recipient) by mistake: eavesdroppers must now opt-in to this
2778 behaviour by putting "eavesdrop='true'" in the match rule, which will
2779 not have any practical effect on buses where eavesdropping is not allowed
2780 (fd.o #37890, Cosimo Alfarano)
2784 • D-Bus Specification version 0.18 (fd.o #37890, fd.o #39450, fd.o #38252;
2785 Cosimo Alfarano, Simon McVittie)
2786 · add the "eavesdrop" keyword to match rules
2787 · define eavesdropping, unicast messages and broadcast messages
2788 · stop claiming that match rules are needed to match unicast messages to you
2789 · promote the type system to be a top-level section
2791 • Use DBUS_ERROR_OBJECT_PATH_IN_USE if dbus_connection_try_register_object_path
2792 or dbus_connection_try_register_fallback fails, not ...ADDRESS_IN_USE,
2793 and simplify object-path registration (fd.o #38874, Jiří Klimeš)
2795 • Consistently use atomic operations on everything that is ever manipulated
2796 via atomic ops, as was done for changes to DBusConnection's refcount in
2797 1.4.12 (fd.o #38005, Simon McVittie)
2799 • Fix a file descriptor leak when connecting to a TCP socket (fd.o #37258,
2802 • Make "make check" in a clean tree work, by not running tests until
2803 test data has been set up (fd.o #34405, Simon McVittie)
2805 • The dbus-daemon no longer busy-loops if it has a very large number of file
2806 descriptors (fd.o #23194, Simon McVittie)
2808 • Refactor message flow through dispatching to avoid locking violations if
2809 the bus daemon's message limit is hit; remove the per-connection link cache,
2810 which was meant to improve performance, but now reduces it (fd.o #34393,
2813 • Some cmake fixes (Ralf Habacker)
2815 • Remove dead code, mainly from DBusString (fd.o #38570, fd.o #39610;
2816 Simon McVittie, Lennart Poettering)
2818 • Stop storing two extra byte order indicators in each D-Bus message
2819 (fd.o #38287, Simon McVittie)
2821 • Add an optional Stats interface which can be used to get statistics from
2822 a running dbus-daemon if enabled at configure time with --enable-stats
2823 (fd.o #34040, Simon McVittie)
2825 • Fix various typos (fd.o #27227, fd.o #38284; Sascha Silbe, Simon McVittie)
2827 • Documentation (fd.o #36156, Simon McVittie):
2828 · let xsltproc be overridden as usual: ./configure XSLTPROC=myxsltproc
2829 · install more documentation automatically, including man2html output
2830 · put dbus.devhelp in the right place (it must go in ${htmldir})
2833 · look for system services in /lib/dbus-1/system-services in addition to all
2834 the other well-known locations; note that this should always be /lib,
2835 even on platforms where shared libraries on the root FS would go in /lib64,
2836 /lib/x86_64-linux-gnu or similar (fd.o #35229, Lennart Poettering)
2837 · opt-in to fd passing on Solaris (fd.o #33465, Simon McVittie)
2839 • Windows-specific (Ralf Habacker):
2840 · fix use of a mutex for autolaunch server detection
2841 · don't crash on malloc failure in _dbus_printf_string_upper_bound
2843 D-Bus 1.5.4 (2011-06-10)
2846 Security (local denial of service):
2848 • Byte-swap foreign-endian messages correctly, preventing a long-standing
2849 local DoS if foreign-endian messages are relayed through the dbus-daemon
2850 (backporters: this is git commit c3223ba6c401ba81df1305851312a47c485e6cd7)
2851 (CVE-2011-2200, fd.o #38120, Debian #629938; Simon McVittie)
2855 • The constant to use for an infinite timeout now has a name,
2856 DBUS_TIMEOUT_INFINITE. It is numerically equivalent to 0x7fffffff (INT32_MAX)
2857 which can be used for source compatibility with older versions of libdbus.
2859 • If GLib and DBus-GLib are already installed, more tests will be built,
2860 providing better coverage. The new tests can also be installed via
2861 ./configure --enable-installed-tests
2862 for system integration testing, if required. (fd.o #34570, Simon McVittie)
2866 • Consistently use atomic operations for the DBusConnection's refcount,
2867 fixing potential threading problems (fd.o #38005, Simon McVittie)
2869 • Don't use -Wl,--gc-sections by default: in practice the size decrease is
2870 small (300KiB on x86-64) and it frequently doesn't work in unusual
2871 toolchains. To optimize for minimum installed size, you should benchmark
2872 various possibilities for CFLAGS and LDFLAGS, and set the best flags for
2873 your particular toolchain at configure time. (fd.o #33466, Simon McVittie)
2875 • Use #!/bin/sh for run-with-tmp-session-bus.sh, making it work on *BSD
2876 (fd.o #35880, Timothy Redaelli)
2878 • Use ln -fs to set up dbus for systemd, which should fix reinstallation
2879 when not using a DESTDIR (fd.o #37870, Simon McVittie)
2881 • Windows-specific changes:
2882 · don't try to build dbus-daemon-launch-helper (fd.o #37838, Mark Brand)
2884 D-Bus 1.5.2 (2011-06-01)
2887 The "Boar Hunter" release.
2889 Notes for distributors:
2891 This version of D-Bus no longer uses -fPIE by default. Distributions wishing
2892 to harden the dbus-daemon and dbus-launch-helper can re-enable this if their
2893 toolchain supports it reliably, via something like:
2895 ./configure CFLAGS=-fPIE LDFLAGS="-pie -Wl,-z,relro"
2897 or by using distribution-specific wrappers such as Debian's hardening-wrapper.
2901 • D-Bus Specification v0.17
2902 · Reserve the extra characters used in signatures by GVariant
2903 (fd.o #34529, Simon McVittie)
2904 · Define the ObjectManager interface (fd.o #34869, David Zeuthen)
2905 • Don't force -fPIE: distributions and libtool know better than we do whether
2906 it's desirable (fd.o #16621, fd.o #27215; Simon McVittie)
2907 • Allow --disable-gc-sections, in case your toolchain offers the
2908 -ffunction-sections, -fdata-sections and -Wl,--gc-sections options
2909 but they're broken, as seen on Solaris (fd.o #33466, Simon McVittie)
2910 • Install dbus-daemon and dbus-daemon-launch-helper in a more normal way
2911 (fd.o #14512; Simon McVittie, loosely based on a patch from Luca Barbato)
2912 • Ensure that maintainers upload documentation with the right permissions
2913 (fd.o #36130, Simon McVittie)
2914 • Don't force users of libdbus to be linked against -lpthread, -lrt
2915 (fd.o #32827, Simon McVittie)
2916 • Log system-bus activation information to syslog (fd.o #35705,
2918 • Log messages dropped due to quotas to syslog (fd.o #35358,
2920 • Make the nonce-tcp transport work on Unix (fd.o #34569, Simon McVittie)
2921 • On Unix, if /var/lib/dbus/machine-id cannot be read, try /etc/machine-id
2922 (fd.o #35228, Lennart Poettering)
2923 • In the regression tests, don't report fds as "leaked" if they were open
2924 on startup (fd.o #35173, Simon McVittie)
2925 • Make dbus-monitor bail out if asked to monitor more than one bus,
2926 rather than silently using the last one (fd.o #26548, Will Thompson)
2927 • Clarify documentation (fd.o #35182, Simon McVittie)
2928 • Clean up minor dead code and some incorrect error handling
2929 (fd.o #33128, fd.o #29881; Simon McVittie)
2930 • Check that compiler options are supported before using them (fd.o #19681,
2933 • Remove obsolete workaround for winioctl.h (fd.o #35083, Ralf Habacker)
2935 D-Bus 1.5.0 (2011-04-11)
2938 The "you never know when you need to tow something from your giant
2939 flying shark" release.
2941 • D-Bus Specification v0.16
2942 · Add support for path_namespace and arg0namespace in match rules
2943 (fd.o #24317, #34870; Will Thompson, David Zeuthen, Simon McVittie)
2944 · Make argNpath support object paths, not just object-path-like strings,
2945 and document it better (fd.o #31818, Will Thompson)
2946 • Let the bus daemon implement more than one interface (fd.o #33757,
2948 • Optimize _dbus_string_replace_len to reduce waste (fd.o #21261,
2950 • Require user intervention to compile with missing 64-bit support
2951 (fd.o #35114, Simon McVittie)
2952 • Add dbus_type_is_valid as public API (fd.o #20496, Simon McVittie)
2953 • Raise UnknownObject instead of UnknownMethod for calls to methods on
2954 paths that are not part of the object tree, and UnknownInterface for calls
2955 to unknown interfaces in the bus daemon (fd.o #34527, Lennart Poettering)
2957 D-Bus 1.4.8 (2011-04-08)
2960 The "It's like the beginning of a lobster" release.
2962 • Rename configure.in to configure.ac, and update it to modern conventions
2963 (fd.o #32245; Javier Jardón, Simon McVittie)
2964 • Correctly give XDG_DATA_HOME priority over XDG_DATA_DIRS (fd.o #34496,
2966 • Prevent X11 autolaunching if $DISPLAY is unset or empty, and add
2967 --disable-x11-autolaunch configure option to prevent it altogether
2968 in embedded environments (fd.o #19997, NB#219964; Simon McVittie)
2969 • Install the documentation, and an index for Devhelp (fd.o #13495,
2970 Debian #454142; Simon McVittie, Matthias Clasen)
2971 • If checks are not disabled, check validity of string-like types and
2972 booleans when sending them (fd.o #16338, NB#223152; Simon McVittie)
2973 • Add UnknownObject, UnknownInterface, UnknownProperty and PropertyReadOnly
2974 errors to dbus-shared.h (fd.o #34527, Lennart Poettering)
2975 • Break up a huge conditional in config-parser so gcov can produce coverage
2976 data (fd.o #10887, Simon McVittie)
2977 • List which parts of the Desktop Entry specification are applicable to
2978 .service files (fd.o #19159, Sven Herzberg)
2979 • Don't suppress service activation if two services have the same Exec=
2980 (fd.o #35750, Colin Walters)
2982 · Avoid the name ELEMENT_TYPE due to namespace-pollution from winioctl.h
2984 · Include _dbus_path_is_absolute in libdbus on Windows, fixing compilation
2985 (fd.o #32805, Mark Brand)
2987 D-Bus 1.4.6 (2010-02-17)
2990 The "1, 2, miss a few, 99, 100" release.
2992 • Remove unfinished changes intended to support GTest-based tests,
2993 which were mistakenly included in 1.4.4
2995 D-Bus 1.4.4 (2010-02-17)
2998 • Switch back to using even micro versions for stable releases; 1.4.1
2999 should have been called 1.4.2, so skip that version number
3000 • Don't leave bad file descriptors being watched when spawning processes,
3001 which could result in a busy-loop (fd.o #32992, NB#200248; possibly
3002 also LP#656134, LP#680444, LP#713157)
3003 • Check for MSG_NOSIGNAL correctly
3004 • Fix failure to detect abstract socket support (fd.o #29895)
3005 • Make _dbus_system_logv actually exit with DBUS_SYSTEM_LOG_FATAL
3006 (fd.o #32262, NB#180486)
3007 • Improve some error code paths (fd.o #29981, fd.o #32264, fd.o #32262,
3008 fd.o #33128, fd.o #33277, fd.o #33126, NB#180486)
3009 • Avoid possible symlink attacks in /tmp during compilation (fd.o #32854)
3010 • Tidy up dead code (fd.o #25306, fd.o #33128, fd.o #34292, NB#180486)
3011 • Improve gcc malloc annotations (fd.o #32710)
3012 • If the system bus is launched via systemd, protect it from the OOM killer
3013 • Documentation improvements (fd.o #11190)
3014 • Avoid readdir_r, which is difficult to use correctly (fd.o #8284,
3015 fd.o #15922, LP#241619)
3016 • Cope with invalid files in session.d, system.d (fd.o #19186,
3018 • Don't distribute generated files that embed our builddir (fd.o #30285,
3020 • Raise the system bus's fd limit to be sufficient for its configuration
3021 (fd.o #33474, LP#381063)
3022 • Fix syslog string processing
3024 • Remove broken gcov parsing code and --enable-gcov, and replace them
3025 with lcov HTML reports and --enable-compiler-coverage (fd.o #10887)
3027 · avoid live-lock in Windows CE due to unfair condition variables
3029 · support credentials-passing (fd.o #32542)
3031 · opt-in to thread safety (fd.o #33464)
3033 D-Bus 1.4.1 (20 December 2010)
3036 • Fix for CVE-2010-4352: sending messages with excessively-nested variants can
3037 crash the bus. The existing restriction to 64-levels of nesting previously
3038 only applied to the static type signature; now it also applies to dynamic
3039 nesting using variants. Thanks to Rémi Denis-Courmont for discoving this
3041 • OS X portability fixes, including launchd support.
3042 • Windows autolaunch improvements.
3043 • Various bug fixes.
3045 D-Bus 1.4.0 (6 Sep 2010)
3049 D-Bus 1.3.1 (23 June 2010)
3051 - New standardized PropertiesChanged signal in the properties interface
3052 - Various portability fixes, in particular to Windows platforms
3053 - Support forking bus services, for compatibility
3055 D-Bus 1.3.0 (29 July 2009)
3057 - ability for dbus-send to send to any bus (--address)
3058 - file descriptor passing on Unix socket transports
3059 - use of GCC atomic intrinsics for better processor support
3060 (requires -march=i486 or above for x86 compilation)
3061 - thread-safe FD_CLOEXEC setting on recent Linux kernels (2.6.24-27 and up)
3062 and glibc (2.9 for pipe2 and 2.10 for accept4)
3063 - feature negotiation in the bus daemon